Combination ball valves can be customized
Dynamic balance of electric regulating pneumatic valve operation before debugging
by:AIRWOLF
2021-01-15
final element of the pneumatic valve is a control system, therefore, regulating pneumatic valve need to system debugging before operation. The coordinated system debugging should be of process operation.
. Negative feedback debugging. Should meet the requirements of feedback control system, therefore, should be controller, test transmitter and adjusting pneumatic valve ( Including pneumatic valve positioner with controlled object, and set up the controller is, the opposite effect. Rule of negative feedback control system is open loop gain is always positive. Set controller is, reaction method, measuring the analog input signal in the controller, make its increase or decrease, observing the controller output change whether meet the requirements of the works and examine the regulating pneumatic valve movement direction is correct, if we can make the controlled variable to reduce the direction change.
. Adjust the pneumatic valve pressure drop tests. Adjust the pneumatic valve pressure drop the check at the time of water simulation debugging. Full in regulating pneumatic valve stroke during operation, check the regulation changes on both ends of the pneumatic valve pressure drop, are free to change or flash caused by noise, how the flow changes, conform to the designed flow characteristic, etc.
. Response time for inspection. Some control system to adjust the pneumatic valve response time requirements, should check the response time of the pneumatic valve adjustment. Timing starts in the controller output signal changes, to adjust the pneumatic valve pneumatic valve position to reach the final steady state position % of the time required is the response time, its time to process production process to meet the operation requirements.
regulating pneumatic valve manufacturers recommendation: thick pu pneumatic valve co. , LTD. Yongjia jingwei pump pneumatic valve co. , LTD
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