Why does the rotor of a horizontal multistage pump need to be tested for dynamic balance?

Category: Water pump knowledge

2023-12-05

Dynamic balance detection of horizontal multi-stage pump refers to the method of connecting the impeller with the chuck and carrying out balance treatment on the balancing machine, detecting the parameters such as the mass and centrifugal force of the impeller, and achieving the balance by readjusting the shape of the impeller or adding a balance weight, so as to ensure the balance of the pump impeller. Next, Hunan Sanchang Pump Industry will explain to you why the rotor of horizontal multi-stage pump needs dynamic balance detection.

　　

 

The reason why the rotor of the horizontal multistage pump needs to be tested for dynamic balance:

　　1. Balance detection

Due to the rotor in the manufacturing process and assembly process, the final assembly of the rotor is always unable to achieve the power of complete axisymmetry (called shaft eccentricity), so there is a certain amount of imbalance.

　　2. Determine the accuracy of the workpiece

Usually, knowing the diameter, weight, working speed and balance accuracy level of the workpiece, the balance accuracy of the workpiece can be determined, and the balance accuracy of the workpiece should be well known.

　　3, extend the service life

In order to ensure better operation of rotor components, improve their performance, improve product quality and extend service life, dynamic balance tests should be carried out during the manufacturing process.

　　4. Avoid vibration

For a rotor of a certain shape and size, the center of gravity of the rotor is moved to the rotation axis by the method of counterweight or deweighting, so that when the rotor rotates, it can run stably under the action of inertial force without obvious vibration.

　　5. Reduce energy loss

Eliminating the centrifugal force generated when the rotor parts of the horizontal multistage pump rotate can maintain the normal operation of the pump and reduce vibration and energy loss.

　　Eliminate or reduce the adverse effects of inertial forces

When the magnitude and direction of the inertial force change periodically, the machine will produce vibration and noise. Therefore, in high-speed, heavy-load, and precision machinery, in order to eliminate or reduce the adverse effects of the inertial force, the rotor must be balanced.

To sum up, the above is the relevant content of why the rotor of horizontal multistage pump needs dynamic balance detection introduced by Hunan Sanchang pump industry to all users. I hope it will be helpful to you after reading this article, pay close attention to our website, and update your pump knowledge and common faults every day.

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