Gas ejector for single-stage liquid ring vacuum pumps

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1 Gas ejector for single-stage liquid ring vacuum pumps GEV 5... GEV 800 Operating pressure: Suction volume flow: 8 to 80 mbar 5 to 050 CONSTRUCTION TYPE Sterling SIHI gas ejectors are simple and sturdy vacuum gas ejectors with following particular characteristics: Adaptable to different operating conditions by adequate material selection Simple installation into the suction line of liquid ring vacuum pumps Low noise service which is free of maintenance and deficient in vibration GEV 50 + LEM 50 NOTE APPLICATION Sterling SIHI gas ejectors extend the operating range of Sterling SIHI liquid ring vacuum pumps so that lower absolute pressures become possible (to 8 mbar). Field of application are e.g.: Chemistry and pharmacy for distilling and degassing The characteristics of the of the gas ejectors depend on essentially on the suction capacity of the liquid ring vacuum pump and therefore on the vapour pressure ant temperature of the service liquid used. To meet with the different conditions, we offer construction series. Type: A B Service liquid: water to 5 C water to 30 C Electric industry for impregnation and drying Suction pressure: mbar mbar Plastics industry for degassing etc. The gases which are to be handled may be vapour saturated or aggressive. Sterling SIHI gas ejectors are used wherever the vacuum attainable by a liquid ring vacuum pump is not sufficient and where danger of running in cavitation is immenent for the liquid ring vacuum pump. Even if the suction side of the ejector is closed, the liquid ring vacuum pump is protected against cavitation. POLLUTION CONTROLL: To reduce the exhaust blast the motive gas can be removed from the separator. The standard combinations described in this catalogue list are optimal in view of, power absorption and service charges. Other combinations of gas ejectors and liquid ring vacuum pumps can be applied. Details on request. VACUUM TECHNOLOGY GPV G E 05/99

Gas ejectors for two-stage liquid ring vacuum pumps GOV 3, GOV 3 GPV 40.

2 Gas ejectors for two-stage liquid ring vacuum pumps GOV 3, GOV 3 GPV GPV 63 Operating pressure: Suction volume flow: 4 to 80 mbar 0 to 400 CONSTRUCTION TYPE Sterling SIHI gas ejectors are simple and sturdy vacuum gas ejectors with following particular characteristics: Adaptable to different operating conditions by adequate material selection Simple installation into the suction line of liquid ring vacuum pumps Low noise service which is free of maintenance and deficient in vibration NOTE The characteristics of the of the gas ejectors depend on essentially on the suction capacity of the liquid ring vacuum pump and therefore on the vapour pressure ant temperature of the service liquid used. To meet with the different conditions, we offer construction series. APPLICATION Sterling SIHI gas ejectors extend the operating range of liquid ring vacuum pumps so that lower absolute pressures become possible (to 8 mbar). Fields of application are e.g.: Chemistry and pharmacy for distilling and degassing Electric industry for impregnation and drying Plastics industry for degassing etc. The gases to be handled may be vapour saturated or aggressive. Sterling SIHI gas ejectors are used wherever the vacuum attainable by a liquid ring vacuum pump is not sufficient and where danger of running in cavitation is immenent for the liquid ring vacuum pump. Even if the suction side of the ejector is closed, the liquid ring vacuum pump is protected against cavitation. Service liquid: water up to 5 C water up to 30 C Suction pressure: mbar mbar Series: GOV 3,3 GOV 3, 3 GPV GPV In case of particularly low suction the gas ejector GPV 5 is available. Service liquid: water 5 C Suction pressure: 4... mbar POLLUTION CONTROLL: To reduce the exhaust blast the motive gas can be removed from the separator. The standard combinations described in this catalogue list are optimal in view of, power absorption and service charges. Other combinations of gas ejectors and liquid ring vacuum pumps can be applied. Details on request. VACUUM TECHNOLOGY GPV G E 07/00

3 Material design MATERIAL DESIGN Item COMPONENTS Casing Venturi tube holder * Insert ring Motive nozzle hard rubber Venturi tube In case of material design 88 the venturi tube holder is not in contact with the medium handled. * only in case of material design 88 Sectional drawing

4 Technical Data Suction pressure range 4 to mbar Service liquid temperature up to 5 C gas ejector + liquid ring vacuum pump pump speed rated power of the motor of the liquid ring vacuum pump pressure at a suction volume flow = zero make-up water requirements in m 3 /h KB difference in temperature C rpm kw mbar 5 GPV 5 + LPH ca. 0,95,55,7 FB Suction pressure range 8 to 40 mbar Service liquid temperature to 5 C gas ejector + liquid ring vacuum pump pump speed rated power of the motor of the liquid ring vacuum pump pressure at a suction volume flow = zero make-up water requirements in m 3 /h KB difference in temperature C rpm kw mbar 5 GOV 3 + LOH ,5 0,3 0, 0,34 GOV 3 + LOH , , 0,34 0,75 GPV 40 + LPH ,5 0,45 0,9 GPV 40 + LPH , ,35 0,6 0,95 GPV 50 + LPH , ,75,4,7 GPV 50 + LPH ,95,55 GPV 60 + LPH ,,7,6 GPV 60 + LPH ,5,,8 FB Suction pressure range 0 to 80 mbar Service liquid temperature to 30 C gas ejector + liquid ring vacuum pump pump speed rated power of the motor of the liquid ring vacuum pump pressure at a suction volume flow = zero make-up water requirements in m 3 /h KB difference in temperature C rpm kw mbar 0 5 GOV 3 + LOH ,5 7 0,08 0,3 0,34 GOV 3 + LOH , 0, 0,9 0,75 GPV 43 + LPH ,5 0,5 0,85 GPV 43 + LPH , 0,3 GPV LPH ,5 0,5 0,4 0,95 GPV 53 + LPH ,5 9 0,45 0,75 GPV 53 + LPH ,5 0,85,7 GPV LPH ,6 0,95 GPV 63 + LPH ,7,,6 GPV 63 + LPH ,5 0,8, FB = make-up liquid service KB = combined liquid service, service liquid 0 C, 5 C or C warmer than the make-up water The make-up water flows refer to the lowest indicated. In case of increasing these figures decrease. FB The values indicated are valid for compression of dry air of 0 C from to atmospheric pressure (03 mbar). Service liquid for the liquid ring vacuum pump also indicated is water to a temperature of 5 C resp. 30 C. The motive air for the gas ejector has a pressure of abt. 03 mbar. Motive and handling gases with physical characteristics which deviate from those of air, service water with other temperatures than those indicated, as well as other service liquids than water cause a change in suction capacity, which can be determined by Sterling SIHI on request. 3

5 Performance graph of the combinations Suction pressure range: 4 to mbar for service liquid temperatures to 5 C GPV 5 + LPH 5530 speed: 450 rpm mbar 000 Suction pressure range: 8 to 40 mbar for service liquid temperatures to 5 C GPV 60 + LPH 6537 GPV 60 +LPH 6530 GPV 50 + LPH 5530 GPV 50 + LPH 553 GPV 40 + LPH 4536 GPV 40 + LPH GOV 3 + LOH 5309 GOV 3 + LOH speed: 900 rpm speed: 450 rpm mbar 000 For the the tolerance is 0 %. 4

6 Performance graph of the combinations Suction pressure range: 0 to 80 mbar for service liquid temperatures up to 30 C GPV 63 + LPH 6537 GPV 63 + LPH 6530 GPV LPH 5530 GPV 53 + LPH 5536 GPV 53 + LPH 553 GPV 53 + LPH 553 GPV LPH 4536 GPV 43 + LPH 453 GOV 3 + LOH 5309 GOV 3 + LOH speed: 900 rpm speed: 450 rpm mbar 000 For the the tolerance is 0 %. 5

7 Dimension table N = gas-inlet, N = gas-outlet, TG = motive gas inlet series + N / N TG b e w weight in kg for material design size 8 88 GOV 3 DN 3 * G ¼ ,5 4 GOV 3 GPV 40 G ½ ,5 3 GPV 40 G ¾ GPV 43 DN GPV 43 G ½ ,5 3 GPV 433 GPV 50 G GPV 50 DN 3 * GPV 5 DN 50 GPV 53 GPV 53 G GPV 533 GPV GPV 60 DN 65 DN 5 ** GPV GPV 63 * Flange suitable for counterflange as per DIN 558 ** Flange suitable for counterflange as per DIN 56 Flange connections as per DIN 50 PN 0 DIN 558 PN 6 DIN 56 PN 0 DN k D d x number 8 x 4 8 x 4 8 x 4 4 x 4 x d s Example for ordering: G P V series size material design case sealing On delivery the point ( ) in the fourth place of the type code is replaced by a letter in the factory. Any changes in the interest of the technical development are reserved. Sterling SIHI GmbH Lindenstraße 70, D-554 Itzehoe, Germany, Telephone +49 (0) , Fax +49 (0)

8 Material design GEV 5 and GEV 50 GEV 90...GEV 50 GEV 50...GEV 45 GEV GEV 450 Item COMPONENTS 0S 4F 0R 0B 4B 0A 4B 0970 Motive nozzle.457 hard rubber Venturi tube Casing EP-resin glass-fibre reinforced Venturi tube holder not available Insert ring not available.457 not available.457 GEV GEV 800 GEV 9...GEV 6 Item COMPONENTS 0A 4B Item COMPONENTS 0A 4B 0970 Motive nozzle Motive nozzle Venturi tube 7.50 Venturi tube 095 Casing Casing Venturi tube holder.0038 In case of the material design 4B the venturi tube holder is not in contact with the medium handled. Sectional drawing GEV 5 + GEV 50 GEV 9... GEV 6 GEV GEV 800

9 Technical Data Suction pressure range 8 to 40 mbar type A service liquid temperature up to 5 C Suction pressure range 0 to 80 mbar type B service liquid temperature up to 30 C gas ejector + liquid ring-vacuum pump pumpspeed rated power of the motor of the liquid pressure at a suction volume flow = zero make-up water flow for differnce in temperature ring vacuum pump mbar mbar rpm kw type A type B C 5 C GEV 5 + LEM ,75 8 -* 0, 0,06 GEV 50 + LEM 50,5 0,9 0, GEV 9 + LEM/L 9 AZ/AB 900, ,35 0, GEV 6 + LEM/L 6 AZ/AB ,4 0,6 GEV 6 + LEM/L 6 AZ/AB ,65 0,39 GEV 90 + LEM/L 90, ,4 0, GEV 5 + LEM/L 5 3 0,47 0,6 GEV 50 + LEM/L ,49 0,8 GEV 50 + LEM/L ,5 8 0,6 0,34 GEV 35 + LEM 35 7,5 0,9 0,55 GEV 45 + LEM 45, 0,78 GEV LEH 350 7, ,0 0,53 GEV LEH 450,5 0,7 GEV LEH ,7,0 GEV LEH ,5 7,0, GEV LEH 900,4,5 GEV 00 + LEH ,3,7 GEV LEH ,75 3, GEV LEH ,0 3,3 The gas ejectors GEV 5 and GEV 50 only are available as type A. At a service water temperature of 30 C and suction volume flow zero a pressure of 7 mbar is reached. The make-up liquid flow ist indicated for combined operation. The service liquid is C resp. 5 C warmer than the make-up water. Data for make-up water operation, see operation instructions for liquid ring vacuum pumps. The values indicated for the are applicable for the compression of dry air of 0 C from to atmospheric pressure (03 mbar). As service liquid for the liquid ring vacuum pump is used water of 5 C resp. 30 C. The motive air for the gas ejector has a pressure of abt.. 03 mbar. Motive and pumping gases with physical properties differing from those of air, service water with temperatures different from those indicated, as well as service liquids other than water, cause a change of the suction capacity which can be determined by Sterling SIHI on request. 3

10 Performance graph of the combinations Suction pressure range: 8 to 40 mbar for service liquid temperatures up to 5 C GEV 45A+LEM GEV 35A+LEM 35 GEV 50A+LEM/L 50 GEV 50A+LEM/L 50 GEV 5A+LEM/L 5 GEV 90A+LEM/L 9 GEV 50A+LEM 50 GEV 5A+LEM 5 4 speed: 800 rpm speed: 450 rpm mbar GEV 6A+LEM 6 GEV 6A+LEM GEV 9A+LEM 9 speed: 900 rpm speed: 460 rpm mbar 000 If a combination gas ejector - liquid ring vacuum pump is applied in the range from 40 mbar to 03 mbar, the motive gas flow can be shut off. Then the of the combination increases by abt. 5 %. For the the tolerance is 0 %. 4

11 Performance graph of the combinations Suction pressure range: 8 to 40 mbar for service liquid temperatures up to 5 C 00 GEV 800A+LEH GEV 500A+LEH GEV 00A+LEH 00 3 GEV 900A+LEH 900 GEV 800A+LEH 800 GEV 600A+LEH speed: 450 rpm speed: 460 rpm 3 speed: 975 rpm GEV 450A+LEH 450 GEV 350A+ LEH mbar000 If a combination gas ejector - liquid ring vacuum pump is applied in the range from 40 mbar to 03 mbar, the motive gas flow can be shut off. Then the of the combination increases by abt. 5 %. For the the tolerance is 0 %. 5

12 Performance graph of the combinations Suction pressure range: 0 to 80 mbar for service liquid temperatures up to 30 C GEV 45B+LEM GEV 35A+LEM 35 GEV 50B+LEM/L 50 GEV 50B+LEM/L GEV 5B+LEM/L 5 GEV 90B+LEM/L 9 GEV 50B+LEM 50 GEV 5B+LEM 5 4 speed: 800 rpm speed: 450 rpm mbar GEV 6B+LEM GEV 6B+LEM 6 GEV 9B+LEM 9 speed: 900 rpm speed: 460 rpm mbar 000 If a combination gas ejector - liquid ring vacuum pump is applied in the range from 80 mbar to 03 mbar, the motive gas flow can be shut off. Then the of the combination increases by abt. 5 %. For the the tolerance is 0 %. 6

13 Performance graph of the combinations Suction pressure range: 0 to 80 mbar for service liquid temperatures up to 30 C GEV 800B+LEH GEV 500B+LEH GEV 00B+LEH GEV 900B+LEH GEV 800B+LEH 800 GEV 600B+LEH 600 GEV 450B+LEH GEV 350B+ LEH 350 speed: 450 rpm speed: 460 rpm 3 speed: 975 rpm mbar 000 If a combination gas ejector - liquid ring vacuum pump is applied in the range from 80 mbar to 03 mbar, the motive gas flow can be shut off. Then the of the combination increases by abt. 5 %. For the the tolerance is 0 %. 7

14 Dimension table GEV 5 + GEV 50 GEV 9 to GEV 6 GEV 90 to GEV 450 GEV 600 to GEV 800 Flange connections N = gas-inlet, N = gas-outlet, TG = motive gas inlet 8 series + type weight in kg for material design size N N b d e w SW 0R 0 0B 0 4B 0 0A 0 0S 0 4F 0 GEV 5 A G G 5 G / , GEV 50 A GEV 9 A, B G /4 G / ,8 3,6 GEV 6 A, B 33,5 G / , 3,9 GEV 6 A, B G / G / ,0 4,7 GEV 90 A, B 84 7,5 8,5 GEV 5 A B ,5 8,5 - GEV 50 A B 39 GEV 50 A, B ,5 GEV 35 A G / B GEV 45 A ,5 9,5 B GEV 350 A,B 5 5 GEV 450 A B 576 6,5 GEV 600 A, B GEV 800 A, B * GEV 900 A, B 866 GEV 00 A, B GEV 500 A B ** GEV 800 A B * Flange suitable for counter-flange as per DIN 56 ** Flange suitable for counter-flange as per DIN 558 flange connections as per DIN 50 PN 0 DIN 56 PN 0 DIN 558 PN 6 DN k D d x number 8 x 4 8 x 4 8 x 4 8 x 8 8 x 8 4 x 4 x d s Example for ordering: G E V A 9 A 0A 0 series size type material design Any changes in the interest of the technical development are reserved. Sterling SIHI GmbH Lindenstraße 70, D-554 Itzehoe, Germany, Telephone +49 (0) 48 / 7 7-0, Fax +49 (0) 48 /

Gas ejectors for two-stage liquid ring vacuum pumps

Gas ejectors for two-stage liquid ring vacuum pumps GOV 3, GOV 3 GPV 0... GPV 63 Operating pressure: Suction volume flow: to 80 mbar 0 to 00 m³/h CONSTRUCTION TYPE Sterling SIHI gas ejectors are simple