What are the reasons for insufficient pressure in centrifugal pumps?

Insufficient pressure in centrifugal pumps will seriously affect the industrial production process. In order to allow customers to have an early judgment on the cause of the failure, HNYB summarizes the following reasons for insufficient pressure in large industrial centrifugal pumps. If you find similar situations in the water pump during operation, you can contact professionals to repair the water pump or pipeline to avoid causing greater damage.

 

 

Insufficient inlet pressure:

Large centrifugal pumps require a certain inlet pressure to push the liquid into the pump body. If the inlet pressure is insufficient, the discharge pressure of the pump will drop. The reasons for insufficient inlet pressure may be pipeline blockage, too long or too thin inlet pipeline, insufficient inlet water level, insufficient opening of the inlet valve, etc.

 

Impeller wear or damage:

The impeller of a large centrifugal pump is the main fluid power component in the pump body. If the impeller is worn or damaged, the discharge pressure of the pump will drop. Impeller wear or damage may be caused by long-term operation, particulate matter in the liquid, high liquid temperature, etc.

 

Poor pump body seal:

Poor pump body seal of a large centrifugal pump will cause the discharge pressure of the pump to drop. It may be leakage or seepage in the pump body, which will reduce the discharge pressure of the pump. The reasons for poor pump body seal may be aging, wear, damage, etc.

Shaft seal failure: The shaft seal of a large centrifugal pump is used to prevent leakage of liquid inside the pump body. If the shaft seal fails, it will also cause the discharge pressure of the pump to drop. The reasons for shaft seal failure may be aging, wear, damage, etc.

 

Shaft seal failure:

The shaft seal of a large centrifugal pump is used to prevent the leakage of liquid inside the pump body. If the shaft seal fails, the discharge pressure of the pump will also drop. The reasons for shaft seal failure may be aging, wear, damage, etc.

 

The speed of a large centrifugal pump is not enough:

The discharge pressure of a large centrifugal pump is related to the speed of the pump. If the speed of the pump is not enough, the discharge pressure of the pump will also drop. The reasons for the insufficient speed of the pump may be motor failure, belt loosening, transmission system damage, etc.
The above are some possible reasons for the insufficient pressure of a large centrifugal pump. It is necessary to analyze and investigate according to the specific situation, and take corresponding maintenance and adjustment measures in time.

 

Insufficient inlet pressure:

A large centrifugal pump requires a certain inlet pressure to push the liquid into the pump body. If the inlet pressure is insufficient, the discharge pressure of the pump will drop. The reasons for insufficient inlet pressure may be pipeline blockage, the inlet pipeline is too long or too thin, the inlet water level is insufficient, the inlet valve opening is not enough, etc.

 

Impeller wear or damage:

The impeller of a large centrifugal pump is the main fluid dynamic component in the pump body. If the impeller is worn or damaged, the discharge pressure of the pump will drop. Impeller wears or damage may be caused by the long-term operation, particles in the liquid, high liquid temperature, etc.

 

Poor pump body seal:

Poor pump body seal of large centrifugal pumps will cause the pump discharge pressure to drop. It may be leakage or water seepage in the pump body, which will reduce the pump discharge pressure. The reasons for poor pump body seal may be aging, wear, damage, etc.