Reasons: (1) Due to the sudden power failure, the system pressure fluctuates, the negative pressure of the discharge system occurs, and the bubbles in the honor liquid escape, causing gas in the pump or pipeline;
(2) Due to the sudden power failure, the rapid backflow will impact on the valve plate of the one-way valve at the pump outlet;
(3) The valve of the outlet pipeline is closed too fast.
Treatment method: (1) Exhaust the gas;
(2) Transform the arrangement of the pipeline and pipeline accessories of the pump's unreasonable discharge system;
(3) Slowly close the outlet valve.
This solution is suitable for self-priming centrifugal pump, horizontal pipeline centrifugal pump, submersible acid pump and other centrifugal pump products.
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