Analysis of Water Leakage Causes in High-Flow, High-Head Multistage Pumps

Category: Water pump knowledge

2025-06-24

High-flow, high-head multistage pumps, as important fluid conveying equipment, are widely used in water conservancy, power, and chemical industries. However, water leakage sometimes occurs during use, seriously affecting the normal operation and safety of the equipment. Next, we will analyze the causes of water leakage in high-flow, high-head multistage pumps in detail.

I. Mechanical Seal Failure

The mechanical seal is one of the key components of the pump. If the seal fails, it will cause water leakage in the part of the pump body that is in contact with water. This is usually caused by seal wear, aging, or improper selection.

II. Pump Body Manufacturing Defects

Defects in the casting or processing of the pump body, such as pinholes and cracks, can also cause the pump body to leak. These manufacturing defects will gradually expand during use, eventually leading to leakage.

III. Bearing Wear

Bearings are the rotating parts of the pump, and long-term use will cause wear. When the bearing is worn to a certain extent, it will affect the sealing performance, causing the pump body to leak.

IV. Improper Installation

During installation, if the flange connection between the pump body and the pipeline is not tight or the gasket is damaged, it will also cause the pump body to leak. In addition, non-concentric installation or improper adjustment of the bearing clearance will also affect the sealing performance.

V. Medium Corrosion

The transported medium is corrosive, which will cause the pump body, seals, and other components to be corroded, resulting in water leakage.

VI. Improper Operation

Improper parameter settings during operation, such as excessive or insufficient pressure, can also cause the pump body to leak. In addition, long-term overload operation will also accelerate the wear of the pump body, leading to leakage.

In view of the above reasons, we can take the following measures to prevent and deal with water leakage problems in high-flow, high-head multistage pumps:

1. Regularly check the mechanical seal and replace worn or aged seals in time.

2. Strictly control the manufacturing quality of the pump body to avoid manufacturing defects.

3. Regularly check the wear of the bearings and replace severely worn bearings in time.

4. Ensure installation quality and check flange connections and gaskets.

5. Select appropriate materials and coatings according to the characteristics of the medium to enhance corrosion resistance.

6. Operate strictly according to the operating procedures to avoid improper parameter settings and long-term overload operation.

In summary, understanding and analyzing the causes of water leakage in high-flow, high-head multistage pumps helps us better prevent and solve this problem, ensuring the normal operation and safety of the equipment.

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