Products Solutions Services. Vortex. Prowirl

Transcription

1 Products Solutions Services Vortex Prowirl Slide 1

2 Vortex Applications Liquids Steam Gases Slide 2

3 Vortex Measuring Principle Slide 3

4 All you need for vortex measurement Transmitter f = Vortex frequency V = Volume flow f ~ V Bluff Body DSC Sensor Slide 4

5 Differential Switched Capacitor Sensor Electrode 1 Laser welding not in touch with process = no corrosion Electrode 2 Counter Electrode & Paddle have the same mass = perfectly balanced system = immune against vibrations Signal Amplitude Trigger Level The movement of the paddle generates sinusidal voltage change between Electrode 1 and 2 Slide 5

6 Stable Strouhal Number = Excellent Performance 0.75% o.f.s 0.75% o.r. The E+H bluff body guarantees a stable Strouhal number over Re The range from Re to should be avoided when sizing Slide 6

7 Measuring Range of a Vortex Flowmeter 1. Low flow limitation Reynolds number Vortex performs best at Re> 20,000 Increase of viscosity due to low process temperature lower Re number Small flow velocity lower Re number 2. Low flow limitation density/velocity Higher density and velocity creates stronger signal Slide 7

8 Effects of build-up and abrasion If no corrosion and operating at velocity's that could cause erosion (>50m/sec for abrasive gases) then the meter calibration is for life!!! Radius because of abrasion has no effect Amplifier or Sensor changes do not influence the performance! *** Life-Time-Calibration *** Build-up has no effect Slide 8

9 Vibration Immunity Acceleration (g) Frequency (Hz) Z-Axis Y-Axis X-Axis X-Axis Y-Axis Z-Axis Test proves vibration immunity: exceeds1g in all axes from 20 to 500 Hz Slide 9

10 High Resistance to Water Hammer Water hammer simulator at University of Karlsruhe Tested with water slugs up to 100m/s (>350 km/h) No effect on sensor performance or calibration Puddle of water is shot against the meter if the rupture disc bursts due to high pressure Slide 10

11 Vortex Temperature Shock Test Heating sensor to +400ºC Shock cooling in water +25ºC 3X reheating to +400ºC and shock cooling in liquid nitrogen -196ºC Slide 11

12 Vortex Temperature Shock Test Slide 12

13 Vortex- For liquids, gases and steam Promass 72 Volume Flow Measurement Promass 73 Temperature Measurement Mass Flow Calculation Prowirl Measuring accuracy :±0.75% o.r. (liquid) ±1.00% o.r. (gas) Process temperature: -200 to +400ºC Process pressure up to 250 bar Flanged version: DN 15 to 300 (1/2 to 12 ) Wafer version: DN 15 to 150 (1/2 to 6 ) Nominal Diameter Reduction version saves cost and add flexibility Dualsens: single body meter with two transmitter for redundancy measurement Slide 13

14 The two sensors for Prowirl 72 and 73 Prowirl 72 comes with the reliable and proven paddle sensor for volumetric flow measurement Prowirl 73 also has additionally an integrated temperature sensor (PT1000) for mass flow calculations of: liquids Saturated steam gases at constant pressure The same type of sensor is used for all meter sizes means cost reduction of spare part handling Slide 14

15 Common Vortex Installation About 70% of all vortex installations require a reduction of line size, including: 1. reducer 2. min. 15 DN straight run (inlet) 3. Vortex 4. min. 5 DN straight run (outlet) 5. expander Slide 15

16 All of this is replaced now by one flow meter! with the same specifications DN100 to DN50 Prowirl F sensor DN100/4 S Style super reduced by two line sizes to DN50/2 DN100 to DN80 Prowirl F sensor DN100/4 R Style reduced by one line size to DN80/3 DN100 Prowirl F sensor DN100/4 standard Slide 16

17 Prowirl F, FR, FS Dualsens The Dualsens model has one single meter body with only one bluff body but two individual sensors and transmitters The model is used in applications where redundancy of a measuring point is required When a plant/process can t be shut down in case of a failure (e.g. boiler mains) When a critical process variable needs crosschecking with a second value Slide 17

18 Steam Measurement with Prowirl Because of the technological advantages of Prowirl most of its applications can be found in steam metering About half of all Prowirl are installed in steam applications Temperature shocks and water hammer at startup require an extremely robust flow meter such as Prowirl The Prowirl measures the volumetric flowrate of steam accurate and independently of process conditions The Prowirl 73 can additionally compute the massflow of saturated steam Slide 18

19 What type of steam is measured? 1. Saturated steam >85% of Vortex steam applications In most industries used for heating and to be added to processes Density is defined by either pressure OR temperature Process conditions usually 4 15 bar / C Saturated steam sometimes becomes slightly overheated. This leads to small errors if not considered 2. Superheated steam Normally measured with a Dp solution Used for high energy flow i.e. power generation To define density pressure AND temperature is needed Process conditions often >300 C and pressure >80 bar 3. Wet steam Not commonly used in process industries Difficult or impossible to measure because of likely 2 nd phase flow Prowirl is able to measure steam qualities better 95% (vol.) Slide 19

20 Vortex Solutions for Steam Mass Flow Functionality Prowirl 72 Constant Process Conditions Prowirl 73 Sat. Steam Measurement with Integrated T- Measurement Prowirl 73 with HART Input Superheated Steam Prowirl 72 + RMS + p-sensor + T-Sensor Superheated Steam Slide 20 Price

21 Limitations in Vortex Steam Applications 1. Nominal Bore In power generation and very large main line after the boiler sizes >NB 300 are installed Diameters larger NB150 versions in general are quite expensive compared with other technologies 2. Hi Pressure High pressure versions of Prowirl cover up to PN250 but are limited to max. NB150 High pressure versions are generally more expensive then dp solutions for this applications 3. Hi Temperature Whilst saturated steam applications are well below 400 C superheated steam is occasionally even higher in temperature Slide 21

22 Installation requirement Slide 22

23 Flow conditioner to reduce inlet run Slide 23

24 What should be improved? Slide 24

25 Prowirl 73F Saturated Steam in Chemical Plant Borden Chemicals Brisbane, Australia Saturated steam Prowirl 73F Remote electronics for easy access Slide 25

26 Prowirl 72F High pressure steam Saturated steam, wet Pressure 110 bar/1635 PSI Temperature 320 C/610 F Flow Range 680 kg/h /1500 lb/h Prowirl 72F:72F40-S92AA1NAB0AW Chevron Bakersfield, California NB 1 ½ and 2 Cl.1500 TSP flanges Slide 26

27 Superheated Steam Internal Billing Application in chemical industry Superheated steam measurement V, T and P wired to flow computer Mass calculation of superheated steam Slide 27

28 Prowirl 72F Demineralized Water Measurement technology: PROline Prowirl 7x Process: Monitoring the flow rate of demiwater for controlling the desalination plant. Medium: Demineralized water Operation: max. 2 bar, max. 25 C Features: Compact device with flanges for easy instrumentation without extra equipment. Wide turndown of up to 40:1 for safety flow rates while fluctuate process. Proven capacitive sensor and the Vortex system itself for long term accuracy. Slide 28

29 Prowirl 72F Dualsens Liquid Bitumen Chemical plant Liquid bitumen 300 C Dualsens model Slide 29

30 Prowirl 72F Liquid Nitrogen Ossigeno, Switzerland Road tanker unloading Several temperature shocks of >200 K / week Liquid N C, 10 bar Slide 30

31 Prowirl 72F - Liquid Nitrogen Slide 31

32 Advantages and Limitation Advantages High pressure range Suitable for gas, steam and liquids High temperature range Independent of gas properties Limitations Sizes max. DN 300 Min. flow limitation Slide 32

33 Products Solutions Services Any Questions? Slide 33

34 Products Solutions Services Thank you very much for your attention Slide 34