How do high-efficiency, energy-saving multi-stage pumps handle dry running?

Category: Water pump knowledge

2025-07-28

High-efficiency energy-saving multi-stage pumps encounter dry running during operation, which not only affects their work efficiency but may also cause equipment damage or resource waste. To address this issue, the following are some suggestions and strategies.

I. Identifying Dry Running

Dry running refers to the pump operating without liquid or with only a trace amount of liquid. This usually manifests as abnormal pump noise, increased vibration, or current fluctuations. Identifying dry running is the first step in solving the problem.

II. Analyzing the Causes

The causes of dry running in multi-stage pumps may include: suction pipe leakage, improper pump installation, insufficient flow, etc. Therefore, when dry running is detected, these aspects should be checked and analyzed.

III. Countermeasures

1. Check the suction pipe and seals

Check the suction pipe for leaks, especially the seals. If a leak is found, repair or replace the seals immediately. In addition, ensure that the pipe connections are tight to reduce the possibility of air entering.

2. Adjust the installation position

If the pump is improperly installed, it may cause poor liquid flow or air accumulation in the suction pipe. Therefore, the pump's installation position should be adjusted as needed to ensure that the liquid can flow smoothly into the pump.

3. Optimize flow control

Insufficient flow can also lead to dry running. In this case, the flow control device should be checked to ensure its normal operation. At the same time, adjust the flow as needed to ensure that the pump operates at the appropriate flow rate.

IV. Preventive Measures

1. Regular inspection and maintenance

Regular inspection and maintenance of the multi-stage pump to promptly identify and resolve problems is an effective method for preventing dry running.

2. Correct operation and use

Ensure that operators are familiar with the pump's performance and characteristics, operate and use it correctly, and avoid dry running due to misoperation.

V. Summary

Dry running of high-efficiency energy-saving multi-stage pumps is an issue that needs attention. By identifying the phenomenon, analyzing the causes, adopting countermeasures, and taking preventive measures, this problem can be effectively solved, improving the pump's work efficiency and service life. To ensure the normal operation of the multi-stage pump, users are advised to strengthen equipment maintenance and management to ensure the long-term stable operation of the equipment.

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