Good traditions New decisions

Transcription

1 Ural Turbine Works Ural Turbomotor Works Turbomotor Works 2003 Ural Turbine Works Ural Turbine Works operates on basis of long-term experience of former Turbomotor Works Corporation. Ural Turbine Works was founded on October 2, Turbines of the Ural manufacturers are valued for their high reliability and durability. At present UTW produces different extraction steam turbines high and medium capacity with pressure of 90, 130 and 240 kgf/cm 2 (8.8, 12.8 and 23.5 MPa) and rotor speed rpm. For export deliveries the plant produces turbines using AC 60 Hz rotor speed rpm. Also design work of special turbines for steam-gas installations is continued. In 1959 the gas turbine department separated from the steam turbine design center. Nowadays our gas turbine compressing units with the capacity of kw work on main gas pipelines transferring natural fuel to different cities, countries and abroad. Great economical effect can be reached if the gas recovery compressorless turbine type GUBT or the gas recovery turbine type TGU-11 are installed, because the turbines type GUBT generate cheap power electricity utilizing in the turbine blast-furnace gas and the turbine type TGU-11 generate electricity thanks to surplus pressure of natural gas supplied to thermal power station. Ural Turbine Works has developed and at present manufactures power gas turbines (type GT) with the capacity from 6 to 32 MW. Many-years experience of turbine construction and wide range of manufactured turbines let Ural Turbine Works rather completely satisfy the demands of different clients. And despite the variety of turbines manufactured by UTW we apply properly checked, constructively unified units and parts that makes the manufacturing process serial, improves reliability and simplifies the maintenance and overalls of UTW turbines. At developing new turbines and modernization of manufacturing turbines Ural Turbine Works takes into consideration modern tendencies of power engineering development, gas industry and metallurgy. According to the demands of every particular client, turbine construction and turbo unit scheme modifications are possible. Some facts: During 70 years of its work the plant delivered and mounted 853 steam turbines with total capacity of MW (up to January 1st, 2008) on power stations of different countries. In Russia and CIS countries approximately half of all capacity of mounted steam extraction turbines are of Ural Turbine Works manufacturing (Turbomotor Works Corporation). The light and heating of Moscow, the UTW turbines generate. To Moscow 65 ural turbines were delivered, out of them: 19 turbines of T-250 type and 42 turbines of T-110 type. Nowadays at Moscow 49 UTW turbines work, and they nearly completely cover the heat and power need of Russian capital. Ural Turbine Works was awarded the State Quality Mark for high quality gas turbines. International Certificate Services SGS (Switzerland) and TUV (Germany) gave UTW certificates of international standard accordance. The gas turbines of UTW manufacturing got over magnitude 9 earthquakes that took place in Gazli in 1976 and In total Ural Turbine Works delivered 573 drive heat-recovering and electric power gas turbines with total capacity of kw.

2 The family of turbines T-250/ with supercritical steam parameters steam extraction turbine T-265/ C The family includes the base turbine T-255/ and four its modifications: T / C, T / Д Б, T-285/ and T-250/ Д. These turbines are intended for use at power plants which supply heat and hot water to metropolis and cities. They are highly efficient under heat-extraction conditions and, at the same time, rather economically operate at purely condensing (summer) conditions. The turbine type T-265/ C is designed for power plants with a reduced (0.3) extraction factor (α ТЕР) (cf of the base model), that is appropriate for power plants located within city boundaries. For this purpose, the flow rate of the heating-system water through the heatingsystem heaters (HSHs) is increased and the extraction pressure is slightly lowered. The maximum heating of the heating-system water is limited to 106 C. The turbines type T-250/ Д and Т-250/ ДБ are designed for remote power plants located km away from a town. The heating-system water is heated in three stages to temperature of 150 С (in case of the base model, in two stages to 117 С ). The turbine with «Д» index is installed in circuits with a deaerator of 7 kgf/cm 2, while the turbine indexed «ДБ» is intended for deaerator-free circuits where the direct-contact low-pressure heater (LPH) No. 2 acts as the deaerator. All turbines of the family are designed as single-shaft four-cylinder units. They vary in the design of the second intermediatepressure cylinder (IPC-2). In the case of one- and two-stage heating of the heating-system water, the pressure of the steam delivered to the user is adjusted with regulating diaphragms installed in each flow of the LPC. If three-stage heating is used, the adjustment is realized with a regulating valve mounted in the third heating stage of the extraction pipeline. For the basic characteristics of the turbines comprising the family T-250/ see Table.1 HPC - high-pressure cylinder IPC - intermediate pressure cylinder LPC -low -pressure cylinder FWP - feed-water pump DWH - district-heating water heaters GH - gland heater GE - gland ejector ME - main ejector MDP - modular demineralizing plant CCT - condensate cooler of turbine CCH - condensate cooler of heater H - heater D - deaerator CP - condensate pump C - condenser basic flow diagram of turbine plant with turbine T-255/ turbine longitudinal section view T-255/ Table 1. Basic characteristics of the turbines entering the family T-250/ Т-255/ М Т-285/ Т-250/ Д Т-265/ С Т-250/ ДБ Power, MW: nominal/maximum at condensing conditions 260/ / / / /305 Live steam flow rate, t/h: nominal/maximum 980/ / / /1000 Live steam parameters: pressure, kgf/cm 2 (MPa) 240 (23,5) 240 (23,5) 240 (23,5) 240 (23,5) 240 (23,5) temperature, С 540/ / / / /540 Thermal load, GCal/h: nominal/maximum 360/ / / /415 Extraction pressure adjustment range, kgf/cm 2 first (lower) heating extraction 0,5-1,5 0,5 0,5-3,5 0,5-1,0 0,5-3,5 second (upper) heating extraction 0,6-2,0 0,6-2,5 0,6-4,0 0,5-1,5 0,6-4,0 third extraction - - 3,0-8,5-3,0-8,5 Exhaust rotor blade length, mm Number of stages: HPC/IPC-1/IPC-2/LPC 12/10/6x2/3x2 11/10/6x2/3x2 12/10/5x2/3x2 12/10/6x2/3x2 12/10/5x2/3x2 Cooling water: design temperature, С design flow rate, m 3 /h Condenser cooling surface area, m Regenerative system structural formula 3HPH+D+5LPH 3HPH+D+5LPH 3HPH+D+4LPH 3HPH+D+5LPH 2HPH+5LPH Design temperature of feed water, С Maximum flow rate of heating-system water, m 3 /h

3 The family of turbines Тп-185/ steam extraction turbine Тп-185/ The family includes the base turbine Tп-185/ * and its modified version Tп-185/ The turbines of this family are designed for power plants of cities. These turbines offer limited process steam extraction at pressure of 25-35, and 8-12 kgf/cm 2. On customer s choice, either or any two of these extractions can be used as well as non-extraction operation. The pressure of steam supplied to the user from these extractions is maintained with regulating valves in the extraction pipelines. Both turbines of this family have two-stage heating of the heating-system water. The extraction steam pressure is controlled with regulating diaphragms mounted in each flow of the LPC. The turbines are single-shaft three-cylinder units with a unified flow passage. The turbines indexed «2» and «4» are equipped with exhaust rotor blades 830 mm and 660 mm long and their design temperature of cooling water is 20 C and 27 C respectively. For the basic characteristics of the turbines type Tп-185/ see Table 2 turbine longitudinal section view Тп-185/ Table 2. Basic characteristics of the turbines type Тп-185/ HPC - high-pressure cylinder IPC - intermediate pressure cylinder LPC -low -pressure cylinder FWP - feed-water pump DWH - district-heating water heaters GH - gland heater GE - gland ejector ME - main ejector MDP - modular demineralizing plant CCT - condensate cooler of turbine CCH - condensate cooler of heater H - heater D - deaerator CP - condensate pump C - condenser basic flow diagram of turbine plant with turbine Тп-185/ Тп-185/ Тп-185/ Power, MW: nominal/maximum 185/ /215 condensing conditions with HPH turned off Live steam flow rate, t/h: nominal/maximum 785/ /810 Live steam parameters: pressure, kgf/сm 2 (MPa) 130(12,8) 130(12,8) temperature, С Thermal load: Process steam extraction, t/h downstream from 7 th stage of HPC 90** 90** downstream from 11 th stage of HPC 100** 100** downstream from 13 th stage of HPC 100** 100** Heating steam extraction, GCal/h: nominal/maximum 280/ /290 with HPH turned off Extraction pressure adjustment range, kgf/cm 2 : process steam extraction downstream from 7 th stage of HPC downstream from 11 th stage of HPC downstream from 13 th stage of HPC upper heating steam extraction 0,6-3,0 0,6-2,5 lower heating steam extraction 0,5-2,0 0,5-2,0 Exhaust rotor blade length, mm Number of stages: HPC/IPC/LPC 13/9/3x2 13/9/2x2 Cooling water: design temperature, С/design flow rate, m 3 /h 20/ /27000 Condenser cooling surface area, m Regenerative system structural formula 3HPH+D+4LPH 3HPH+D+4LPH Feed water design temperature, С *The turbine was designed as part of the turbine group with the live steam flow rate of approximately 800 t/h. The group comprises turbines type Tп-185/ , ПТ-140/ /15 and P Each turbine has similar HPCs, two check valves, and a number of other principal and design approaches in common. ** If process steam extraction is used, the warming thermal load and electric power of the turbine are lowered.

4 The family of turbines ПТ - 140/ /15 steam extraction turbine ПТ-140/ /15 DWH - district-heating water heaters GH - gland heater GE - gland ejector ME - main ejector H - heater D - deaerator CP - condensate pump C - condenser The family consists of the base turbine ПТ-140/ /15-2* and two its modified versions ПТ-140/ /15-3 and ПТ-150/ /9-4. The turbines of this family are installed at big industrial heating power stations working under large process steam extraction load. The base turbine is outfitted with exhaust blades 830 mm long and is designed for the cooling water temperature of 20 С. The turbines indexed «3» and «4» have exhaust rotor blades 660 mm long and their design cooling water temperature is 27 С. The turbine indexed «4» differs from the other two turbines in the nominal pressure of the process steam extraction, which equals 9 kgf/cm 2 instead of 15 kgf/cm 2. Therefore the former turbine has a different number of HPC and LPC stages. All the turbines are provided with two heating steam extractions. A regulating diaphragm is installed downstream of each extraction. In the case of one- or two-stage heating of the heating-system water the extraction pressure is adjusted using one regulating diaphragm of the lower extraction. If extraction serves other auxiliary power, the extraction pressures can be separately controlled by both regulating diaphragms. The pressure of the main process steam extraction from the HPC exhaust is maintained with regulating valves installed at the LPC inlet. An additional process steam extraction with the pressure of kgf/cm 2 is provided. The pressure is maintained downstream of the regulating valve in the extraction line. The turbines are made as single-shaft two-cylinder units. Basic characteristics of the turbines type ПТ-140/ /15 are summarized in Table 3. basic flow diagram of turbine plant with turbine ПТ-140/ /15 turbine longitudinal section view ПТ-140/ /15 Table 3. Basic characteristics of the turbines type ПТ-140/ /15 Modification ПТ-140/ /15-2М* ПТ-140/ /15-3М ПТ-150/ /9-4 Power, MW: nominal/maximum 142/ / /165 condensing conditions Live steam flow rate, t/h: nominal/maximum 788/ / /810 Live steam parameters: pressure, kgf/cm 2 (MPa) 130 (12,8) 130 (12,8) 130 (12,8) temperature, С Thermal load: process steam extraction, t/h; nominal/maximum 335/ / /500 heating steam extraction, GCal/h ; nominal/maximum 115/ /140 80/115 Extraction pressure adjustment range, kgf/cm 2 process steam extraction upper heating steam extraction 0,6-2,5** 0,6-2,5** 0,6-2,5** lower heating steam extraction 0,4-1,2 0,4-1,2 0,4-1,2 Exhaust rotor blade length, mm Number of stages: HPC/LPC 13/12 13/11 14/10 Cooling water: design temperature, С design flow rate, m 3 /h Condenser cooling surface area, m Regenerative system structural formula 3HPH+D+4LPH 3HPH+D+4LPH 3HPH+D+4LPH Design temperature of feed water, C * The turbine was designed as part of the turbine group with the live steam flow rate of approximately 800 t/h. The group comprises turbines Tп-185/ , ПТ-140/ /15 and P /15. They have similar HPCs, two check valves, and the number of other principal and design approaches in common. ** If pressure is adjusted independently in both heating steam extractions, the pressure of the upper heating steam extraction can change between 0.9 and 2.5 kgf/cm 2. 8

5 The family of back-pressure turbines Р /15 The family includes the base turbine P-102/ /15-2* and its two modified versions Pп-105/ /30/8 and Pп /8-3. The turbines of this family are installed at big industrial heating power stations, which serve users of large amounts of process steam. The turbine Pп-105 provides considerable extraction of process steam with the pressure higher than in back-pressure line. The second and the third turbine models offer analogous steam extraction on a limited scale. The pressure of steam supplied to the user is maintained with a valve installed in the extraction line. For the basic characteristics of the turbines type Р /15 refer to Table 4. turbine longitudinal section view P-102/ /15-2 inside the rotor assembling and testing shop GE - gland ejector GH - gland heater H -heater basic flow diagram of turbine plant with turbine P-102/ /15-2 Table 4. Basic characteristics of the turbines type P /15 Р-102/ /15-2М Рп-105/ /30/8 Рп /8-3 Power, MW: nominal maximum Live steam flow rate, t/h: nominal maximum Live steam parameters: pressure, kgf/cm 2 (MPa) 130 (12,8) 130 (12,8) 130 (12,8) temperature, С Thermal load of process steam extraction, t/h: nominal maximum Back-pressure steam flow rate, nominal, t/h /670** 455 Pressure adjustment range, kgf/cm 2 Process steam extraction Back-pressure Regenerative system structural formula 3HPH 3HPH 3HPH Design temperature of feed water, C * The turbine was designed as part of the turbine group with live steam flow rate of approximately 800 t/h. The group comprises turbines Tп-185/ , ПТ-140/ /15 and P /15. They have similar HPCs, two check valves, and a number of other principal and design approaches in common. 10 ** When the process steam extraction is zero. 11

6 The family of turbines T-110/ The family consists of the base turbine T-110/ * and three modified versions T-116/ , T-118/ and TP (back-pressure). The turbines of this family are intended for newly constructed or extended power stations serving cities or medium-size towns. Considering that the thermal load of these power stations is often uncertain or is not provided during initial years of operation, the T-100 turbine has been designed as a partially universal one: it operates rather efficiently both under various thermal loads and at straight-condensing conditions. The turbine can run at thermal schedule regimes (with back-pressure) when the built-in condenser banks are cooled with makeup or heatingsystem water. It has a rather developed low-potential section, a condenser group with an optimal flow rate of cooling water, and a developed regenerative system. Many advanced approaches worked out for extraction turbines have been realized in the turbine. It has been constantly improved and has passed five modernizations (index «5»). Thanks to the above merits, the turbines T-110/ family have been produced on the largest scale ever known: today these steam extraction turbine T-110/ turbines run to over three hundreds in number. The modified versions differ from the base turbine in the flow rate of live steam and, correspondingly, in nominal power and thermal load. Besides, the turbine TP has neither LPC nor condenser group. All the four turbines of the family offer two-stage heating of the heating-system water. The extraction steam pressure of the first three turbines is maintained with regulating diaphragms installed in each flow of the LPC, while in the fourth turbine the pressure is controlled by moving regulating valves of the high-pressure section. The turbines are made as single-shaft three-cylinder units, except for T that is made as a single-shaft twocylinder unit. Basic characteristics of the turbines type T-110/ are listed in Table 5. HPC - high-pressure cylinder IPC - intermediate pressure cylinder LPC - low-pressure cylinder FWP - feed-water pump DWH - district-heating water heaters QRCP - quick-acting reduction cooling plant GH - gland heater GE - gland ejector ME - main ejector H - heater D - deaerator CP - condensate pump C - condenser basic flow diagram of turbine plant with turbine T-110/ turbine longitudinal section view T-110/ Table 5. Basic characteristics of the turbines type T-110/ Т-110/ М Т-116/ М Т-118/ М Т-120/ ТР Power, MW: nominal/maximum 110/ / / / /114 condensing conditions Live steam flow rate, t/h: nominal/maximum 480/ / / / /485 Live steam parameters: pressure, kgf/cm 2 (MPa) 130 (12,8) 130 (12,8) 130 (12,8) 130 (12,8) 130 (12,8) temperature, С Thermal load: heating steam extraction, GCal/h: nominal/maximum 175/ / / / /200 Extraction pressure adjustment range, kgf/cm 2 upper heating steam extraction/lower heating 0,6-2,5/0,5-2,0 0,6-2,5/0,5-2,0 0,6-2,5/0,5-2,0 0,6-2,5/0,5-2,0 0,6-2,5/0,5-2,0 Exhaust rotor blade length, mm Number of stages: HPC/IPC/LPC 9/14/2x2 9/14/2x2 9/14/2x2 9/14/2x2 9/14/- Cooling water: design temperature, С/design flow rate, m 3 /h 20/ / / / Condenser cooling surface area, m Regenerative system structural formula 3HPH+D+4LPH 3HPH+D+4LPH 3HPH+D+4LPH 3HPH+D+4LPH 3HPH+D+4LPH Design temperature of feed water, C *The turbine was designed as a part of a group of turbines with similar flow rates of live steam involving a number of principal and design approaches in common. The group includes turbine types T , T , ПТ /7, Р /31 and T (rotational speed of 3600 rpm) Note: A stage steam extraction-off up to 50 t/h in addition to regeneration from the steam extraction pipeline to 12 LPH No.3 is possible in all the turbines. 13

7 The family of turbines Tп-115/ This family is intended for technical reequipment of power stations through their extension or replacement of obsolete turbines rated at 25, 50 and 100 MW. The turbines can be installed at newly constructed power stations as well. The family of turbines Tп-115/ * has been developed on the basis of the turbine T-110/ However, taking into account that the turbines of this family are installed in engine rooms of existing power stations, they are framed in two cylinders and have a simplified regenerative system (one HPH and one LPH are removed), one condenser instead of two condensers, and lower flow rate of cooling water. Since boiler equipment is usually replaced later than turbines, the turbines of this family can continuously operate (if so stated in the order) on live steam with p 0 = 90 kgf/cm 2 (8.8 MPa) and t 0 = 535 C with subsequent change-over to live steam with p 0 = 130 kgf/cm 2 (12.8 MPa) and t 0 = 555 C when required. The family comprises three models: Tп-115/ , Tп-115/ and Тп-115/ In addition to blading of high pressure rotor the main heating steam extractions, all the three turbines provide limited auxiliary steam extraction (small letter «п»). If the turbines type Тп-115/ are installed at operating power stations, thermal loads of the turbine are generally well known and therefore the most suitable modification (model) of the turbine can be selected for particular power station conditions. For example, the turbine indexed «1» having the exhaust rotor blades 550 mm long is appropriate in the case of large thermal loads (small steam flow rates in the condenser), which are preserved to a certain extent in summer period. This is because this turbine is most efficient under large thermal loads (low losses at the blades of the low-pressure section): it requires only 8000 m 3 /h cooling water and can operate under the thermal regime with the built-in condenser bank being cooled either with make-up or heating-system water. However, at low thermal load and, more so, under straight-condensing conditions this turbine is inferior to the other turbines in efficiency. Note also that the condensing power of the turbine is limited to 115 MW. The turbine indexed «2» has the exhaust rotor blades 660 mm long. It is less efficient than the turbine indexed «1» under full thermal load but is more profitable under small thermal loads and under straight-condensing conditions. The condensing power of the turbine «2» is 125 MW. The cooling water flow rate is m 3 /h. When working under the thermal regime, only make-up water can be passed through the built-in bank (system water is excluded). The design temperature of cooling water of the turbines «1» and «2» is 27 C. The turbine indexed «3» is equipped with exhaust rotor blades 940 mm long. The turbine is fit for continuous operation under straightcondensing conditions. Here its efficiency approximates efficiency of turbines of T family. The design temperature of cooling water is 20 C. Basic characteristics of the turbines Тп-115/ group are given in Table 6 and Table 7 for the steam pressure p 0 =130 kgf/cm 2 (12.8 MPa) and p 0 =90 kgf/cm 2 (8.8 MPa) respectively. turbine longitudinal section view Тп-115/ basic flow diagram of turbine plant with turbine Тп-115/ HPC - high-pressure cylinder LPC - low-pressure cylinder FWP - feed-water pump DWH - district-heating water heaters GH - gland heater GE - gland ejector ME - main ejector H - heater D - deaerator CP - condensate pump C - condenser *The turbine was designed as a part of turbine group, which includes the family ПТ-90/ /

8 STEAM TURBINES The family of turbines Tп-115/ The family of turbines ПТ- 90/ /10 Table 6. Basic characteristics of the turbines type Тп-115/ Table 7. Basic characteristics of the turbines type Тп-115/ * operating on live steam with p 0 = 90 kgf/cm 2 (8.8 MPa) and t=535 C turbine longitudinal section view ПТ-90/ /10 Тп-115/ М Тп-115/ М Тп-115/ Power MW: nominal 115* 115* 115* maximum condensing conditions Live steam flow rate, t/h: номинальный/максимальный 490/ / /500 Live steam parameters: pressure, kgf/cm 2 (MPa) 130 (12,8) 130 (12,8) 130 (12,8) temperature, 0С Thermal load: process steam extraction, t/h nominal/maximum 70/70 70/70 70/70 Heating steam extraction, GCal/h: nominal maximum 185** 185** 185** ditto, HPH s turned off Extraction pressure adjustment range, kgf/cm 2 process steam extraction upper heating steam extraction 0,6-2,5 0,6-2,5 0,6-2,5 lower heating steam extraction 0,5-2,0 0,5-2,0 0,5-2,0 Exhaust rotor blade length, mm Number of stages: HPC/LPC 9/16 9/16 9/17 Cooling water: design temperature, С design flow rate, m 3 /h Condenser cooling surface area, m Regenerative system structural formula 2HPH+D+3LPH 2HPH+D+3LPH 2HPH+D+3LPH Design temperature of feed water *The nominal power is provided under the nominal thermal load and when process steam extraction is zero. ** When the heat of the condenser steam is used. Тп-115/ М Тп-115/ М Тп-115/ Тп-110/ ** 90** 90** / / / / (8,8) 90 (8,8) 90 (8,8) /70 70/70 70/70 70/ *** 160*** 160*** ,6-2,5 0,6-2,5 0,6-2,5 0,6-2,5 0,5-2,0 0,5-2,0 0,5-2,0 0,5-2, /16 9/16 9/17 9/ HPH+D+3LPH 2HPH+D+3LPH 2HPH+D+4LPH 2HPH+D+3LPH * The turbines should bear the marking Тп-90/100-90, Тп-90/ and Тп-90/ ** The nominal power is provided under the nominal thermal load and when process steam extraction is zero. *** When the heat of the condenser steam is used. basic flow diagram of turbine plant with turbine ПТ-90/ /10 HPC - high-pressure cylinder LPC - low-pressure cylinder FWP - feed-water pump DWH - district-heating water heaters GH - gland heater GE - gland ejector ME - main ejector H - heater D - deaerator CP - condensate pump C - condenser 16 17

9 The family of turbines ПТ-90/ /10 turbine ПТ-90/ /10 The family* includes three turbines: ПТ-90/ /10-1, ПТ-90/ /10-2 and ПТР-90/ /10. As the other turbines of the group, the turbines of this family are based on the turbine T-110/ They can be used for technical reequipment of existing power stations or can be installed at newly constructed plants. The turbines have a simplified regenerative system. The turbines ПТ-90/ /10-1 and ПТ-90/ /10-2 offer a low flow rate of cooling water and can run, if so stated in the order, on live steam with p 0 = 90 kgf/cm 2 (8.8 MPa) and t 0 = 535 C. The turbines indexed «1» and «2» are equipped with exhaust rotor blades 550 mm and 660 mm long respectively. Therefore, when deciding which model to order, consider the information presented in previous section for the turbines Tп-115/ indexed «1» and «2». The turbine ПТР-90/ /10 has no condensing plant (condenser, circulating and condensate pumps) and does not require circulating water supply. As a result, the thermal circuit of the power plant is simplified, the cost is reduced, and the labor input to the manufacture and installation of the turbine plant is lowered. However, the turbine can operate continuously only if an all-year-round thermal (heating) load is provided. Basic characteristics of the turbines ПТ-90/ /10 family are summarized in Table 8 and Table 9 for operation on steam with p 0 =130 kgf/cm 2 (12,8 MPa) and p 0 =90 kgf/cm 2 (8,8 MPa) respecrively. * The family was designed as a part of turbine group, which includes the family Тп-115/ Table 8. Basic characteristics of turbines type ПТ-90/ /10 ПТ-90/ /10-1М ПТ-90/ /10-2М ПТР-90/ /10 Power, MW: nominal maximum condensing conditions Live steam flow rate, t/h: nominal/maximum 490/ / /500 Live steam parameters: pressure, kgf/cm 2 (MPa) 130 (12,8) 130 (12,8) 130 (12,8) temperature, С Thermal load: process steam extraction, t/h nominal heating steam extraction, GCal/h: nominal maximum ,5 at shut-down HHP Extraction pressure adjustment range, kgf/cm 2 process steam extraction upper heating steam extraction 0,6-2,5 0,6-2,5 0,6-2,5 lower heating steam extraction 0,5-2,0 0,5-2,0 0,5-2,0 Exhaust rotor blade length, mm Number of stages HPC Number of stages LPC, IPC Cooling water design temperature, 0С design flow rate, m 3 /h Condenser cooling surface area, m Regenerative system structural formula 2HPH+D+3LPH 2HPH+D+3LPH 2HPH+D+4LPH Design temperature of feed water, C Table 9. Basic characteristics of turbines type ПТ-90/ /10* working on live steam with po=90 kgf/cm 2 (8.8 MPa) and t=535 C ПТ-90/ /10-1М ПТ-90/ /10-2М / / (8,8) 90 (8,8) ** 170** ,6-2,5 0,6-2,5 0,5-2,0 0,5-2, HPH+D+3LPH 2HPH+D+3LPH Note: Similar to the turbines Тп-115/ , the turbines ПТ-90/ /10-1 and ПТ-90/ /10-2 allow process steam extraction up to the 70 t/h at the pressure of kgf/cm 2. *The turbines should bear the marking ПТ-65/95-90/10-1 and ПТ-65/100-90/102. ** Similar to the turbines Тп-115/ , the turbines allow process steam extraction of up to 70 t/h at the pressure of kgf/cm

10 Turbines rated at MW rotor ПТ - 30/35-90/10-5М FWP - feed-water pump DWH - district-heating water heaters GE - gland ejector ME - main ejector H - heater D - deaerator CP - condensate pump C - condenser The turbines rated at MW are installed at power plants of medium- and small-size towns. The turbines type T-60/65-130, ПТ-50/60-130/7, T А (rotational speed of 3600 rpm) and P /31 form, together with the turbine T , a single group united by common principal and design approaches. The turbines type T and ПТ have the two-stage heating of heating-system water. The pressure at the heating and process steam extractions is maintained with the help of regulating revolving diaphragms installed in the LPC. The turbines types T and ПТ are housed in two cylinders. The turbine type P is a single-cylinder unit. The turbine type P /31 has the following parameters of the live steam: p 0 = 130 kgf/cm 2 (12.8 MPa) and t 0 = 555 С. The maximum steam flow rate is 470 t/h, the nominal power is 40 MW, and the nominal back-pressure equals 31 kgf/cm 2. The turbines type ПТ-30/35-90/10 and its modification ПР-30/35-90/10/1,2 designed. They house in one cylinder and have the single-stage heating of heating-system water. The pressure at the heating and process steam extractions will be maintained with regulating revolving diaphragms. The turbine ПТ-30/35-90/10 can be installed instead of ВПТ-25-4 and ВПТ-25-3 turbines, after their service-lives completion, on the existing foundation. Basic characteristics of the turbines types Т, ПТ and ПР are given in Table 10. basic flow diagram of turbine plant with turbine ПТ-30/35-90/10 turbine longitudinal section view ПТ-30/35-90/10-5 Table 10. Basic characteristics of turbines rated at MW * At t/h Т М Т-60/ М ПТ-50/60-130/7-2М Т-50/60-8,8 ПТ-30/35-90/10-5М ПР-30/35-90/10/1,2 Power MW: nominal/maximum 50/60 60/65 50/60 50/60 30/35 30/35 condensing conditions Rotor speed, rpm Live steam flow rate, t/h: nominal/maximum 245/ / / / / /240 Live steam parameters: pressure, kgf/cm 2 (MPa) 130 (12,8) 130 (12,8) 130 (12,8) 90 (8,8) 90(8,8) 90 (8,8) temperature, С Thermal load: process steam extraction, t/h nominal/maximum -/- -/- 118/160 97/101 83/160 83/160 Heating steam extraction, GCal/h: nominal/maximum 90/90 100/105 40/60-63*/92* 72*/100* Extraction pressure adjustment range, kgf/cm 2 process steam extraction upper heating steam extraction 0,6-2,5 0,6-2,5 0,6-2, lower heating steam extraction 0,5-2,0 0,5-2,0 0,5-2,0 0,7-2,5 0,7-2,5 0,5-2,5 Exhaust rotor blade length, mm Number of stages: HPC (HPS)/LPC (LPS) 9/13 9/16 9/15 (16/2) (10/8) 16/7 Cooling water design temperature, С/design flow rate, m 3 /h 2O/8OOO 20/ / /8OOO 2O/5OOO -/- Condenser cooling surface area, m Regenerative system structural formula 3HPH+D+4LPH 3HPH+D+4LPH 3HPH+D+4LPH 2HPH+D+3LPH 2HPH+D+3LPH 2HPH+D+LPH Design temperature of feed water, C

11 Steam turbines for Combine Cycle Power Plants turbine longitudinal section view Т-56/70-6,8 the rotor assembling and testing shop UTW is now developing steam extraction turbines for Combine Cycle Power Plants (CCPP). Providing succession of UTW steam turbine manufacture design decisions, there is worked over CCPP s variants with capacity MW. Classic CCPP includes one or two gas turbines, one or two waste-heat boilers and one steam turbine with generators. UTW offers for CCPP-95 single-shaft steam extraction turbine Т-25/35-8,8 (see table). It includes one district-heating water heater DWH Pressure adjustment at heating steam extraction is provided by regulating diaphragm with turning ring. For CCPP-230 can be used such turbines as Т-53/67-8,0; Т-56/70-8,8 and К-74-6,8. Steam extraction turbine Т-53/67-8,0 was made for Minskaya TEC-3 (Belorussia). It is double-cylinder and is intended for one or two stage district water heating. Maximum district water heating is up to 125 С. Pressure adjustment at heating steam extraction is provided by regulating diaphragm with turning ring, installed in the LPC. The turbine includes two district-heating water heaters DWH Similar by parameters turbine Т-56/70-8,8 is single-shaft. It includes also DWH and condenser. Condensing turbine К-74-6,8 is also single-shaft. For providing high efficiency it has high last stage blade length and condenser with big cooling surface area and high cooling water flow rate (see table). The steam extraction turbines T and KT are a two-cylinder units. They are provided with a two-stage heating of heating-system water to 125 С. The pressure of heating steam extractions is adjusted with regulating revolving diaphragms installed in the LPC. Basic characteristics of the turbines for CCPP are listed in Table 11. Power MW: nominal / maximum condensing conditions HP steam flow rate, t/h:: nominal / maximum HP steam parameters: pressure, kgf/cm 2 (MPa) temperature, С LP steam flow rate, t/h: nominal / maximum LP steam parameters: pressure, kgf/cm 2 (MPa) temperature, С Thermal load, GCal/h: nominal / maximum Extraction pressure adjustment range**, kgf/cm 2 first (lower) second (upper) Exhaust rotor blade length, mm Cooling water design temperature, 0С nominal conditions condensing regime design flow rate, m 3 /h Condenser cooling surface area, m 2 Number of stages: HPC/LPC Table 11. Basic characteristics of turbines for combine cycle power plants Turbine model Т-25/33-8,8 Т-53/67-8,0 Т-56/70-6,8 Т-105/133-12,6 Т КТ КТ-74-6,8 25,2/35,1 53/66,5 56,7/70,3 105,4/133,4 120,5/ / ,1 66,5 70,3 133, ,5 212, ,5 476/ / ,8 90 (8,8) 78,5 (7,7) 69 (6,77) 128,8 (12,6) 85(8,3) 85(8,3) 69,8 (6,8) , ,1 57, ,2/141,6 132,2/141,6 52,4 5,8(0,57) 7,14(0,7) 6,3(0,618) 4,18(0,41) 6,1 (0,6) 6,1 (0,6) 6,12(0,6) ,7 197,2 197,2 204, / /100-0,7-2,5 0,5-2,0 0,5-2,0 0,5-2,0 0,5-2,0 0,5-2, ,6-2,5 0,6-2,5 0,6-2,5 0,6-2,5 0,6-2, , /15 (21/2) 11/13/2х2 22/2x2 23/3x2 20 * The turbine has 3 circuits and process heating that is overlapping with IP circuit with parameters: р ip =27,7 (2,72) kgs/sm 2 (МПа);t ip =552,4 С; flow rate -33 t/h 22 23

12 Extraction steam turbines operating on live steam with p o =90 kgf/cm 2 (8.8 MPA) and t o =535 C high pressure cylinder treatment The extraction steam turbines designed to work on live steam with pressure of 130 kgf/cm 2 (12.8 MPa) and temperature of 555 С are capable of operating continuously on live steam with p 0 = 90 kgf/cm 2 (8.8 MPa) and t 0 = 535 С without any modifications made in the turbine design. This is important for power plants where the engine room is reequipped without replacement of the boiler equipment. In this case the turbine parameters (live steam flow rate, electric power, process steam flow rate, and heating load) lower correspondingly. For example, when the base turbine type ПТ-140/ /15 works on live steam with pressure of 90 kgf/cm 2 (8.8 MPa), it turns into the turbine ПТ-100/130-90/13 after a slight modification. To improve characteristics of the turbine operating on low-parameter steam, certain design changes can be made. If necessary, the turbine can be switched back to operation on live steam with pressure of 130 kgf/cm 2 (12.8 MPa). This option is realized in the family of turbines Tn-115/ and ПТ-90/ /10. Condensing steam turbines Table 12. Condensing steam turbines If minor changes are introduced in the design of the turbines manufactured at Ural Turbine Works they can serve as a basis for development of condensing steam turbines with the following parameters: 1) live steam at 90 kgf/cm 2 (8.8 MPa) and 535 C: - rotational speed of rpm and power equal to MW; - rotational speed of rpm and power equal to MW; 2) live steam at 130 kgf/cm 2 (12.8 MPa) and 555 C: - rotational speed of rpm and power equal to MW; - rotational speed of rpm and power equal to MW. 3) for CCPP (see table 11) 4) exhaust steam (see table 13) assembling of steam turbine Turbine model К-63-8,8 К ,8 Power MW: nominal / maximum 63/63 130/130 Live steam flow rate, t/h: nominal / maximum 257/ /390 Live steam parameters: pressure, kgf/cm 2 (MPa) 90(8,8) 130(12,8) temperature, С /540 Exhaust rotor blade length, mm Number of stages: HPC/LPC 18/- 10/17 Cooling water: design temperature, С /design flow rate, m 3 /h 20/ /13500 Condenser cooling surface area, m Regenerative system structural formula 2HPH+D+3LPH 3HPH+D+4LPH Desing temperatire of feed water, С

13 Exhaust steam turbines turbine on assembly stand Ural Turbine Works offers its customers exhaust steam turbines. They work from heating collectors and process steam extraction of turbines ПР, ПТР, Р, ПТ,П and T when they are not loaded to its purpose. Process steam extraction for heating can be organized from the turbines worked from the collector. Incomplete loading of heating extraction can be in spring-autumn period and in summer when process steam consumption is limited. Absence of steam consumption from exhaust type «P» leads to full stop. Process steam extraction decrease of «П», «Т» and «P» reduces turbo-generator set power. In these cases exhaust-steam turbines installation allows a complete loading of the turbines and provides their work on an efficient design condition. Besides, electric power of power plants increases at the expense of new turbines on comparatively not high capital outlays, because installation of new power-generating boilers is not necessary. Main technical data of exhaust steam turbines are summarized in Table 13. turbine longitudinal section view K basic flow diagram of turbine plant with turbine K LPH - low-pressure heater RV - recycle valve GE - gland ejector ME - main ejector Table 13. Basic characteristics of exhaust steam turbines. Power MW: nominal/maximum condensing conditions Exhaust steam flow rate, t/h Exhaust steam parameters: pressure, kgf/cm 2 (MPa) temperature, С Thermal load, GCal/h: nominal Extraction pressure adjustment range, kgf/cm 2 ** Exhaust rotor blade length, mm Number of stages Cooling water design temperature, С design flow rate, m 3 /h Т-65/70-2,9 ТР-65-2,9 Т-70/110-1,6 ТР-70-1,6 Т-35/55-1,6 ТР-35-1,6 К-110-1,6 К-55-1,6 К-17-1,6* 65/70 65/65 70/110 70/70 35/55 35/35 11O/11O 55/55 17/ ,6 (2,9) 29,6 (2,9) 16,3 (1,6) 16,3 (1,6) 16,3 (1,6) 16,3 (1,6) 16,3 (1,6) 16,3 (1,6) 1,6 (0,16) , ,5-2,5 0,5-2,5 0,5-2,5 0,5-2,5 0,5-2,5 0,5-2, * Pressure is at kgf/cm 2, while others at MPa ** Two-stage heating available 26 27

14 Basic characteristics of the steam turbines produced by UTW Live steam parameters and flow rate, Extraction pressure adjustment range, Turbine type Power, МW Thermal load kgf/cm 2, С, t/h kgf/cm 2 Starting of Process steam extraction, Heating steam extraction, production t/h GCal/h Process Heating steam extraction сomplete cut N n N m N c P 0 t 0 /t ph D n D m D c steam G Н G М Q Н Q М upper lower Т-60/ М Т ,6-2,5 0,5-2, Т-50/ М Т А ,6-2,5 0,5-2, Т-50/60-8,8* Т-50/60-8, ,7-2, Тп-115/ М Тп ,6-2,5 0,5-2, Тп-115/ М Тп ,6-2,5 0,5-2, Тп-115/ Тп ,6-2,5 0,5-2, Т-110/ М Т ,6-2,5 0,5-2, Т-116/ М Т ,6-2,5 0,5-2, Т-118/ М Т ,6-2,5 0,5-2, ТР ТР ,6-2,5 0,5-2, Тп-185/ М Тп ,6-3,0 0,5-2, Тп-185/ М Тп ,6-2,5 0,5-2, Т-255/ М Т / ,6-2,0 0,5-1, Т-285/ Т-285/ / ,6-2,5 0,5-2, Т-250/ Д Т Д / ,6-4,0 0,5-3, Т-265/ С Т С / ,5-1,5 0,5-1, Т-250/ ДБ Т ДБ / ,6-4,0 0,5-3, ПТ-30/35-90/10-5 ПТ " 92" ,7-2, ПР-30/35-90/10/1,2М ПР " 100" ,5-2, ПТ-50/60-130/7-2М ПТ ,6-2,5 0,5-2, ПТ-90/ /10-1М ПТ ,5-2,5 0,5-2, ПТ-90/ /10-2М ПТ ,6-2,5 0,5-2, ПТР-90/ /10 ПТР , ,6-2,5 0,5-2, ПТ-140/ /15-2М ПТ ,6-2,5 0,4-1, ПТ-140/ /15-3М ПТ ,6-2,5 0,4-1, ПТ-150/ /9-4 ПТ ,6-2,5 0,4-1, Р-102/ /15-2М Р Рп-105/ /30/8 Рп Рп /8-3 Рп Т-25/33-8,8 Т-25-8,8-25,2 35,1 35, , ,7-2, Т-53/67-8,0* Т-53-8, ,5 66,5 78, , ,5-2,5 0,5-2, Т-56/70-6,8* Т-56-6,8-56,7 70,3 70, ,5-2,5 0,5-2, Т-105/133-12,6 Т ,6-105,4 133,4 133,4 128, ,5-2,0 0,5-2, Т-150-8* Т , ,2 141, ,6-2,5 0,5-2, КТ-150-8* КТ ,6-2,5 0,5-2, К-74-6,8 К-74-6, Т-65/70-2,9* Т-65/70-2, , ,5-2,5*** ТР-65-2,9* ТР-65-2, , ,5-2,5*** Т-70/110-1,6* Т-70/110-1, , ,5-2,5*** ТР-70-1,6* ТР-70-1, , ,5-2,5*** Т-35/55-1,6* Т-35/55-1, , ,5-2,5*** ТР-35-1,6* ТР-35-1, , ,5-2,5*** К ,8 К , / К-110-1,6* К-110-1, , ,5-2,5*** К-63-8,8 К-63-8, К-55-1,6* К-55-1, , К-17-1,6 К-17-1, ,6 112, * Pressure is at MPa; ** At t/h; *** Two-stage heating available Cooling water Flow rate, t/h t C Temperature of feed water, С

15 GAS TURBINES Gas turbine compression units Gas turbine compression units (ГПА) consisted of a gas turbine and a pipeline centrifugal compressor are designed to transmit natural gas by the gas mains. Gas turbine compression units rated at 16 or 25 MW are installed at the compression stations of modern gas mains with up to 1420 mm diameter pipelines. Gas turbine compression units of the ГТН-6«У» type are aimed to replace employed at present units at rate 6 MW that has exhausted the service life. The modern ГПА mass is 2.5 times smaller than the previous ones and the specific fuel flow rate is 26 % less. Each ГПА is equipped by the family of gas natural compressors with discharge pressure 6-76 kgf/cm 2 and daily capacity from 12 to 51 mln. m 3. The gas turbines are mutually unified to maximum extent and made by simple open cycle diagram without regeneration of the exhaust gases. The rate of ГПА ГТН-16-М-1 and gas pumping unit ГТН-25-1 ГТН-25-1 is due to selecting the corresponding parameters and the design of hot flow path. A gas turbine includes a gas generator, comprising a cycle compressor, a combustion chamber, a high pressure turbine and a power turbine through which a natural gas compressor is driven, a control system, start-up and oil supply systems. The gas generator rotor (high-pressure turbine, HPT) and the compressor drive rotor (power turbine, PT) rotate individually. The natural-gas compressors are one- or two staged, flow paths of each family have been unified to most possible extent and are located in one casing. The oil system is common for the GT and the natural-gas compressor. The GT and the natural gas compressor have their own frames that are coupled at the compression station forming the gas natural system. The system of remote control, monitoring and protection and a regulation system make presence of maintenance personnel in the engine room unnecessary. The units are provided with an anti-icing system, which ensures an automatic supply of hot air for heating the inlet vane device of the compressor. In addition they are equipped with system feeding exit gases to the inlet of the complex air cleaner and the air circuit. The GT is started either with the expansion turbine operating on natural gas or by an electric drive. The units are installed at an elevation of 0.5m. The main unit of the GTP on the frame (oil tank) and the compressor on its frame are delivered as separate transportable packages. Basic parameters of the gas turbine compression units are given in Table cycle axial compressor 2. combustion chamber 3. the gas generator turbine 4. power turbine 5. recovery heat exchanger 6. natural-gas compressor principle diagram of gas pumping unit ГНТ-6У unit longitudinal section view ГТН-6У Table 14. Basic parameters of the gas turbine compression units Types of the Gas turbine compression units ГТН-25-1 ГТН-16М-1 ГТН-6У* Nominal power at the compressor drive coupling, MW 25 16,8 6,5 Efficiency, % Gas temperature upstream of the HPT, C Power turbine rotational speed Exit gas temperature, С Compressor pressure ratio 13 11,5 12 Type of the natural-gas compressor 2Н ,44 2Н ,44М-1; Н ,25У 2Н У 2Н ,5М-1 2Н ,37М-1; 2Н ,44М-1 Volume output, m 3 /day ,3 20,5 12 Polytropic efficiency in the interval of working regimes, % minimum Pressure ratio 1,44 1,44; 1,5; 1,37 1,25 1,5 Gas pressure at the compressor outlet, kgf/cm 2 (MPa) 76 (7,45) 76 (7,45), 56 (5,5) 56 (5,5) 76 (7,45) Number of the compressor stages Overall dimensions, m х m х m 14,6x3,2x3,6 14,6x3,2x3,6 16,7x3,2x3,8 Weight of the turbo-group, t * - Bench test 30 31

16 GAS TURBINES Gas recovery turbine compressorless type ГУБТ gas recovery compressories turbine type ГУБТ The gas recovery compressorless turbine type ГУБТ is designed to drive electric generators. The turbine is run by excess pressure of the blast-furnace gas at metallurgical plants. Up to 40% energy spent for blasting is recovered with almost no fuel consumed. It easily fits the process cycle of either newly commissioned or existing blast-furnace equipment. The actual power developed by the turbine depends on the operating regime of the blast furnace and is determined by the flow rate and pressure of the gas passing through the turbine. Correspondingly, the ГУБТ turbine is available in several modifications: ГУБТ-12М, ГУБТ-8М and ГУБТ-6М. The turbine is an axial double-stage direct-flow unit. It can be supplied with or without a gas heater. The turbine is outfitted with turning guide vanes, which allow in-service adjustment of the turbine to varying operating conditions of the blast furnace. It also employs a unique quickaction multipurpose valve unit. Provision is made for special measures precluding leakage of the blast-furnace gas to the engine-room. The turbine gas an automated remote governor, monitoring, protection and automatic control systems. The turbine has performed well in CIS-countries, Japan, India and Italy. For basic technical characteristics of the ГУБТ turbine refer to Table 15. turbine longitudinal section view ГУБТ Table 15. Basic characteristics of the ГУБТ turbine Turbine model ГУБТ-12М ГУБТ-8М ГУБТ-6М 1. blast furnace 2. dry dust catcher 3. wet gas scrubber 4. mist separator 5. trottle valve downstream the blast furnace 6. mixing-type gas heater 7. gas expansion turbine ГУБТ 8. generator 9. steam turbine driven blower 10. air 11. air heater principle connection diagram of ГУБТ With gas heater Power at the turbine shaft coupling, MW Isoentropic efficiency, % Flow rate of the blast-furnace gas through the turbine 3,6х10 5 4,1х10 5 2,6х10 5 2,9х10 5 2,4x10 5 2,7х10 5 as referred to normal conditions, m 3 /h Absolute pressure of the blast-furnace gas at the turbine inlet, kgf/cm 2 3,3 3,3 3,0 3,0 2,6 2,6 Temperature of the blast-furnace gas at the turbine inlet, С Absolute pressure of the blast-furnace gas at the turbine discharge, kgf/cm 2 1,15 1,15 1,15 1,15 1,15 1,15 Rotor speed, rpm Overall dimensions, m х m х m 6,4 x 1; 1 x 2,8 Weigh, t 58 54, , ,3 w/o gas heater With gas heater w/o gas heater With gas heater w/o gas heater clean gas dirty gas steam air 32 working mixture 33 * - Bench test

17 GAS TURBINES Gas recovery turbine type ТГУ-11 gas recovery turbine type ТГУ gas-purifier 2. gas regulating point 3. quick-action valve 4. closing valve 5. control valve 6. Т ГУ turbo-generator 8. candle outlet Natural gas is transported to users at pressure of MPa and is distributed within residential areas at pressure of 1.2 MPa. However, the pressure required at consumers (thermoelectric and hydroelectric power stations) is MPa or less. The surplus potential energy, which is lost at throttling devices of gas expansion stations and gas regulating rooms, can be used for generation of additional electric power and for process purposes. For example, the gas consumed by a 800 MW steam turbine set with a pressure differential of MPa can give additional power of over 11 MW. Long-standing experience in design and manufacture of gas recovery turbines allowed us to create ТГУ-11 turbine. The gas recovery turbine type ТГУ-11 represents a multistage expansion turbine, which generates electric power using excess pressure of the natural gas supplied as fuel to boilers of thermal power stations (TPSs). The turbine is installed in parallel with throttling valves of the gas expansion station in the pipeline feeding gas to a TPS. To raise power, efficiency and reliability, the natural gas is heated at the turbine inlet in a surface heat exchanger using low-potential heat of the TPS. Basic technical parameters provided under nominal conditions are specified in Table 16. principle diagram of connection ТГУ-11 to gas-main station turbine longitudinal section view ТГУ-11 Table 16. Basic technical parameters of the ТГУ-11 turbine under nominal conditions Generator coupling power, MW 11,5 Absolute gas pressure upstream of the check valve, MPa (kgf/cm 2 ) 1,1(11,0) Absolute gas pressure at the turbine discharge, MPa (kgf/cm 2 ) 0,17(1,7) Gas temperature at the turbine inlet, С 135 Gas flow rate, kg/s 42,5 Rotor speed, rpm 3000 Efficiency (at nominal power), %, minimum 87 Overall dimensions, m x m x m 5,30x2,88x2,34 Weight of the standart eguipment, t

18 GAS TURBINES Power gas turbines The power gas turbines serve to drive turbo-generator as: - self-contained electric and heat sources in areas remote from power systems and in newly developed areas; - back-up electric sources supplying power to critical facilities of the national economy under usual or special conditions. This includes satisfying electric peak loads hours long per annum; - part of gas turbine at TEPs; - part of combined cycle power units with a wasteheat boiler and a steam gas or with a power boiler receiving exhaust gases, which installed at TEPs while reconstruction. The power gas turbines are based on the driving GT s types ГТН-16М-1 and ГТН-25-1 and allow their inservice updating. Basic technical parameters of the power gas turbines are given in Table 17. turbine longitudinal section view ГТЭ - 25У Table 17. Basic characteristics of power gas turbines 1. turbo-generator 2. gear box 3. cycle axial compressor 4. combustion chamber 5. turbine 6. heat-recovery boiler principle diagram power gas turbines ГТЭ-25У Type of power gas turbines ГТЭ-25У* ГТЭ-16 ГТЭ-6 ГТЭ-6У** Nominal power at the generator drive terminal (under normal conditions), MW 30,4 16,1 6,0 6,35 Maximum power, MW ,2 7,8 Electric efficiency under the nominal power, % 31,2 30,4 23,0 31 Efficiency under the maximum power, % 35,0 32,4 25,5 32,5 Compressor pressure ratio 13,5 11,5 6,2 12 Cycle air flow rate Turbine inlet gas temperature, С Turbine exhaust gas temperature, С Rotational speed of the power turbine shaft, rpm Reduction gear есть есть есть есть Rotor speed, rpm Fuel natural gas Overall dimensions of the GSP, m х m х m 10,4x3,7x5,3 11,2x3,2x3,6 9,6x3,2x3,8 9,6x3,2x3,3 Weight of the turbine set, t * - Bench test ** - Under design 36 37

19 TURBINES Engineering center Engineering center which consists of two special development bureaus, technological research and development departments and experiment manufacturing, works at development and putting the turbines of new types into operation that helps to develop scientific and technological heritage of the plant. The engineering services system incorporates a number of research laboratories, forming the experimental technology and materials testing department and the main non-destructive testing laboratory. The studies carried out here are aimed at development and perfection of chemical and heat treatment methods, improvement of electroplating, heat-resistant, rustpreventive and other coating application. Modern computer equipment of Engineering center and CAD/CAM systems let completely conduct engineering analysis, designing, development and technological design documentation preparation at construction and starting new turbine units. UTW has assembly stands for steam and gas turbines testing. It improves the quality of turbines and makes them more economical and reliable. Export map Services «Service division of Ural Turbine works» provides following activities: Carrying out modernizations and reconstructions: - Providing grounds for modernizations and reconstructions necessity. - Project development. - Carrying out modernizations and reconstructions. - Units and parts delivery. - Engineering maintenance of repairs, including starting-up and adjustment. Spare parts delivery Performance of the turnkey basis. Working out recommendations on the type and range of new equipment or on the work content for reconstruction. Information and service maintenance on exploitation and repair questions. Engineering accompaniment of maintenance, with help of domestic maintenance companies; - participation in defectation and working out of technical decision; - participation of chief-engineers in maintenance. Forming of over normative volume of maintenance work. Carrying out not typical maintenance at UTW working area or with help of service division at customer area.