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English Translations » 信息处理 » The centrifugal pump does not start and there is pressure

The centrifugal pump does not start and there is pressure

2009-12-29View Original

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One centrifugal pump is not started, but if the pump nearby is started, its outlet pressure will increase. The pipelines of several pumps are the same； Stationary centrifugal pump inlet and outlet pipeline valves are * * of ；
Reply #22009-12-29
There are several reasons: 1. * * There is pressure in the line because the inlet and outlet valves are * * The pressure remains. 2. Even if the outlet valve is not closed, there will definitely be a pressure value on the pressure gauge when the pumps in the same group are running. 3. The watch is broken.
Reply #32009-12-29
Did the startup of other pumps affect the outlet pipeline of this pump, causing the internal fluid to decrease and causing the downstream pressure to decrease?
Reply #42009-12-29
The pressure gauge is not broken, and it still shows normal when I use it to pay fuel.； The pressure slowly increases after the other pumps are turned on. ； After opening the anti-aircraft valve, the pressure dropped to 0. After closing the anti-aircraft valve, it rose again. ； The purge valve can only release a small amount of oil ； (drop by drop)
Reply #52009-12-29
Internal leakage in the valve causing some pressure fluctuations? ? The same is true in our factory. The backup pump inlet and outlet valves are fully closed and the pressure still fluctuates.
Reply #62009-12-30
Judging from the phenomenon you mentioned, the outlet valve of the pump has a slight internal leakage.
Reply #72010-01-01
It should be that the pump outlet valve has internal leakage, causing the pressure in the outlet pipeline to increase.
Reply #82010-01-01
reason: 1. The pressure gauge is broken. 2. One pump starts up and the outlet valve of the other pump is not closed. If there is a problem with the check valve, there will be pressure.
Reply #92010-01-01
Personally, I think the outlet valve is leaking and the one-way valve is malfunctioning. If the full pressure of the other pumps increases, it shouldn't be a problem with the meter.
Reply #102010-01-01
It's probably an internal leak in the valve. Try changing the valve.
Reply #112010-01-02
The pump outlet valve is leaking. In addition, the pump outlet check valve should also be leaking. Replace it.

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Translated at 2026-07-26 17:00:51

Original: https://bbs.hcbbs.com/thread-598304-1-1.html

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