A method for self-balancing radial force of single-vane centrifugal pump

Abstract

The invention discloses a method for self-balancing radial force of a single-blade centrifugal pump, comprising the following steps: S1. According to CFD numerical simulation, a method of eccentricity of the rotation center of the impeller is used to improve the symmetry of the circumferential distribution of the flow field in the single-blade centrifugal pump, At the same time, the size and position of the eccentricity of the rotation center of the impeller determined based on CFD numerical simulation and experimental measurement; S2, combined with CFD numerical simulation and experimental measurement to determine the position of the center of gravity and the required centrifugal force, according to the calculated centrifugal force, use the center of gravity Off-centre of rotation produces a suitable centrifugal force, which is used to balance the radial forces. The method of the invention balances the radial force generated when the pump is running, and improves the running stability and reliability of the pump; the method is fast and convenient, can greatly reduce the time consumed in the processing of the impeller counterweight, and improve the counterweight efficiency.

Description

technical field [0001] The invention belongs to the technical field of fluid machinery, in particular to a single-blade centrifugal pump, in particular to a method for self-balancing radial force of a single-blade centrifugal pump. Background technique [0002] Due to the asymmetric structure of the single-blade centrifugal pump, its mass is difficult to balance. At the same time, the pressure circumferential distribution of the impeller is asymmetric during operation, and there is a large hydraulic imbalance. As a result, the residual radial force of the single-vane centrifugal pump is large, and the operation stability cannot be guaranteed, which affects the service life of the pump. At present, the manufacturer mainly adopts the method of counterweight and cutting on the cover plate of the single-blade centrifugal pump to balance. In order to achieve a high-precision balance, it is often necessary to undergo multiple balance tests and cutting operations. The method has ...

AI Technical Summary

Problems solved by technology

This method has low production efficiency and high production cost, and is not suitable for mass production. At the same time, it is difficult to balance the hydraulically induced radial force, which limits the wide application of single-blade centrifugal pumps.

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