Causes of vibration and noise in centrifugal pumps
1. The anchor bolts are loose, causing the centrifugal pump or motor to vibrate.
2, the rotor or bearing of the centrifugal pump is corroded and the shaft is unbalanced due to bending.
3. The pump shaft of the centrifugal pump is not concentric with the motor shaft, the strength of the foundation is checked, the thermal expansion and contraction of the material are different.
4. The centrifugal pump has a small flow rate, the liquid flow in the centrifugal pump is uneven, the pressure changes, and it has an impact force on the pump.
How to improve the use efficiency of centrifugal pumps
In order to reduce the water loss, volume loss and mechanical loss of the centrifugal pump, the centrifugal pump should work within the scope of use as much as possible.
Due to wear and tear, the increase of clearance will increase the leakage and the efficiency of the use of the centrifugal pump. Therefore, the centrifugal pump should be repaired in a timely manner if there is a problem, maintain a good lubrication state, and the gland of the packing gland and other fasteners should be appropriate, to reduce energy loss, to improve the efficiency of the use of centrifugal pumps.
The relationship between the flow rate, the head and the specific speed of the centrifugal pump
The smaller the specific speed, the smaller the flow of the centrifugal pump and the higher the head.
The greater the specific speed, the larger the flow rate of the centrifugal pump and the lower the head.
For electric fire pump centrifugal pumps with the same outlet pipe diameter, if the flow rate of the two centrifugal pumps is similar, it is higher than head with a lower speed, and the shaft power consumption is also large.
What is the role of the impeller of the centrifugal pump
The impeller of centrifugal pump is composed of four parts: front wheel plate, rear wheel plate, blade and hub. It is divided into closed impeller, semi-open impeller, and open impeller.
The impeller of centrifugal pump is a component that works on liquid. The impeller rotates at high speed in the pump body driven by the pump shaft, so that the liquid flowing through the centrifugal pump gets energy. That is to say, the high-speed rotation of the impeller transmits mechanical energy to the liquid, so that the liquid can obtain high dynamic pressure energy.
1. The anchor bolts are loose, causing the centrifugal pump or motor to vibrate.
2, the rotor or bearing of the centrifugal pump is corroded and the shaft is unbalanced due to bending.
3. The pump shaft of the centrifugal pump is not concentric with the motor shaft, the strength of the foundation is checked, the thermal expansion and contraction of the material are different.
4. The centrifugal pump has a small flow rate, the liquid flow in the centrifugal pump is uneven, the pressure changes, and it has an impact force on the pump.
How to improve the use efficiency of centrifugal pumps
In order to reduce the water loss, volume loss and mechanical loss of the centrifugal pump, the centrifugal pump should work within the scope of use as much as possible.
Due to wear and tear, the increase of clearance will increase the leakage and the efficiency of the use of the centrifugal pump. Therefore, the centrifugal pump should be repaired in a timely manner if there is a problem, maintain a good lubrication state, and the gland of the packing gland and other fasteners should be appropriate, to reduce energy loss, to improve the efficiency of the use of centrifugal pumps.
The smaller the specific speed, the smaller the flow of the centrifugal pump and the higher the head.
The greater the specific speed, the larger the flow rate of the centrifugal pump and the lower the head.
For electric fire pump centrifugal pumps with the same outlet pipe diameter, if the flow rate of the two centrifugal pumps is similar, it is higher than head with a lower speed, and the shaft power consumption is also large.
What is the role of the impeller of the centrifugal pump
The impeller of centrifugal pump is composed of four parts: front wheel plate, rear wheel plate, blade and hub. It is divided into closed impeller, semi-open impeller, and open impeller.
The impeller of centrifugal pump is a component that works on liquid. The impeller rotates at high speed in the pump body driven by the pump shaft, so that the liquid flowing through the centrifugal pump gets energy. That is to say, the high-speed rotation of the impeller transmits mechanical energy to the liquid, so that the liquid can obtain high dynamic pressure energy.
