What to do if air enters the multistage centrifugal pump
When air enters the multistage centrifugal pump, corresponding treatment measures need to be taken according to the specific reasons. The following are some common treatment methods:
1. Check and deal with the leak
Check the pipeline connection: First, check whether the inlet pipeline and each connection part of the multistage centrifugal pump are tight to ensure that there are no leaks. If the interface is found to be loose or not sealed tightly, it should be reconnected and tightened immediately, and the seal should be replaced if necessary.
Check the sensor and instrument: Check whether the sensor and instrument on the pump body are operating normally to avoid misjudgment caused by sensor damage. If a sensor failure is found, it should be replaced or repaired in time.
2. Exhaust air
Open the exhaust valve: If there is an exhaust valve on the multistage centrifugal pump, the exhaust valve can be opened to exhaust until the exhausted gas is pure gas.
Pump body exhaust: For pump bodies without exhaust valves, exhaust can be performed by opening the vent screw or plug on the pump cover. During the specific operation, the inlet and outlet valves of the pump should be closed first, and then the vent screw should be slowly opened to allow the air in the pump body to be gradually discharged. Pay attention to safety during the exhaust process to avoid high temperature and high pressure gas from hurting people.
3. Adjust the liquid level
Check the liquid level: Make sure that the inlet liquid level of the multistage centrifugal pump is high enough to maintain the normal operation of the pump. If the liquid level is too low, the liquid should be replenished in time.
Adjust the liquid level control system: If the multistage centrifugal pump is equipped with a liquid level control system, check whether it is operating normally. If the liquid level control system fails, it should be repaired or replaced in time.
4. Optimize design and use
Optimize design: For problems caused by unreasonable design of hydraulic impellers, you can consider optimizing the design of the impeller, such as adjusting parameters such as blade thickness and impeller cross-section to reduce the possibility of gas entering the pump body.
Correct use: Before starting the multistage centrifugal pump, make sure that the pump body is filled with water. During use, the power supply should be stable to avoid problems such as short circuit and leakage. At the same time, pay attention to the operating status of the pump, and promptly discover and solve problems that occur during operation.
5. Professional maintenance
If the above methods cannot solve the problem, or the problem is serious and requires professional equipment for detection and maintenance, you should contact professional pump maintenance personnel in time for processing.
To deal with the problem of air entering the multistage centrifugal pump, it is necessary to comprehensively consider multiple factors and take corresponding measures according to the specific situation. Pay attention to safety during the processing and ensure that the operating specifications are correct.
