Reasons for vacuum formation caused by loud pumping sound in centrifugal pumps and corresponding solutions

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Reasons for vacuum formation due to loud pumping sound in centrifugal pumps and corresponding solutions. For more details on centrifugal pumps as well as issues related to on-site dynamic balancing, please contact us at Kunshan Littai Testing Instruments Co., Ltd. ① Reason: Air leakage at the inlet of the centrifugal pump. Solution: The pump should be stopped to inspect the leaking inlet pipelines and flanges； ②Reason: Blockage at the inlet of the centrifugal pump. Action: The pump should be stopped to inspect the leaky inlet pipelines, filter screens, and impeller; after cleaning, repairs should be carried out ； ③Reason: Insufficient pressure at the inlet of the centrifugal pump. Measure: Increase the back pressure at the inlet liquid level ； ④Reason: The temperature of the medium at the inlet of the centrifugal pump is too high, resulting in excessive saturated steam. Action: The temperature of the medium should be reduced, and the steam inside the centrifugal pump must be vented and removed completely ； ⑤Reason: The inlet valve of the centrifugal pump is not open or the valve core has fallen off. Action: The valve should be opened or the pump should be replaced before carrying out repairs ； ⑥Reason: The outlet opening of the centrifugal pump is too large (too small). Action: The openings of various valves should be adjusted appropriately ； ⑦Reason: Water is present in the seal oil of the centrifugal pump. Measure: Dehydrate the seal oil tank. Vibration analyzer. ⑧ Reason: The liquid level in the tower or container of the centrifugal pump is low or non-existent ； Measure: The outlet valve of the centrifugal pump should be temporarily closed or the pump should be stopped; it can then be restarted once the liquid level rises ； ⑨Reason: The impeller of the centrifugal pump or the internal wear ring is severely worn. Measure: Replacement should be carried out in a timely manner. ⑩ Reason: The centrifugal pump motor is rotating in the reverse direction. Measure: The rotation direction should be adjusted promptly. Vibration analyzer