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Whether the industrial instrumentation is correctly used directly affects whether the daily industrial production can be carried out normally, and it is also related to the life of the instrument. It is necessary to use any instrument to master the correct use method, so that the instrument can play its full role. . So how should the common turbine flow meter be used correctly?
1. How to use the turbine flowmeter correctly?
1 Once the unit is in place, ensure that all chips and debris have been removed. The system has been purged, pressure tested, air flow in and boosted to the flow meter inlet valve.
2 Open the bypass ball valve upstream of the turbine flow meter. 3 Slowly open the bypass small bypass valve upstream of the turbine flow meter, and slowly fill the gas until the turbine flow meter is forced to seal the ball valve. Attention: High-speed pressurization with severe pressure or excessive pressure can damage the turbine flowmeter. In order to maintain the gas turbine flow meter, the pressure increase applied to the turbine flow meter must not exceed 35 kPa/s. If the pressure cannot be measured at the site, the turbine flow meter flow cannot be overrun.
4 Close the bypass ball valve and stop valve.
5 Change the handwheel to open the imported forced sealing valve.
6 Slowly open the turbine flowmeter downflow electric forced sealing ball valve (for at least 1 minute), the best use of the manual switch on the electric actuator, be careful not to make the turbine flowmeter overspeed.
7 According to the 1.2-1.6 step operation, the whole system is pressurized and the natural gas is measured at the beginning.
2, online comparison gas turbine flowmeter (work path and main road comparison)
1 Ensure that the inlet and outlet valves of the main road are closed.
2According to the steps 1.2, 1.3, and 1.4 in “1 Every Way of Useâ€, the main road is pressurized.
3 Closed operation road outlet electric forced sealing ball valve, slowly open the forced sealing ball valve of the comparison pipeline, slowly open the main road outlet electric forced sealing ball valve.
4 gas passes through the working and main roads in sequence. Two turbine meters can be compared to each other to see if there is a large error.
5 When the comparison is completed, close the two forced sealing ball valves on the pipeline and on the main road, and open the outlet ball valve of the working pipeline.
6 At this time, the work road is put into operation from the beginning.
3. Online calibration of the gas turbine flowmeter with the mobile calibration vehicle 1 Ensure that the electric forced seal ball valve between the two calibration ports is in a closed condition.
2 Open the small ball valve on the flange of the calibration flange to ensure no pressure inside the blind flange. Then remove the flange blind plate.
3 Connect the calibration vehicle and the calibration port.
4According to the steps 1.2, 1.3, and 1.4 in “1 Every Way of Operationâ€, the main road is pressurized.
5 Closed operation road outlet electric forced sealing ball valve, slowly open the forced sealing ball valve of the comparison pipeline, and slowly open the two calibration forced sealing ball valves on the main road. The best thing is to do these four assignments together.
6 At this time, the gas flows through the two gas turbine flowmeters and the moving calibration vehicle in the sled seat.
7 After the online calibration is completed, close the two Orbit ball valves of the calibration port, slowly open the forced sealing ball valve of the comparison pipe, and slowly open the electric circuit to force the sealing ball valve at the exit of the working circuit. The best thing is to do these four assignments together.
8 Put the flange blind plate back, don't forget to close the small ball valve on the flange blind plate.
9 At this point, the work path is put into operation from the beginning. As long as you use the meter in the right way, your meter can accurately measure accurate data for you! Huajiang Automation can provide you with the most professional turbine flowmeter selection suggestions and the most reliable instrument products. If you have any questions, we will have professional technicians to help you answer them. I hope to help you!
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Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn