Method for self-balancing radial force of a single-blade centrifugal pump

A technology of radial force and centrifugal pumps, which is applied to components, pumps, and pump components of pumping devices used for elastic fluids, and can solve problems such as high production costs, low production efficiency, and unsuitability for mass production, and achieve improved Operational stability and reliability, reduced time consumption, and improved counterweight efficiency

Active Publication Date: 2021-03-12
NANTONG UNIVERSITY
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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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  • Method for self-balancing radial force of a single-blade centrifugal pump
  • Method for self-balancing radial force of a single-blade centrifugal pump
  • Method for self-balancing radial force of a single-blade centrifugal pump

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Embodiment Construction

[0021] The technical solutions of the present invention will be described in further detail below in conjunction with the accompanying drawings, and the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the technical solutions in the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] A method for radial force self-balancing of a single-vane centrifugal pump, including (1), a process of improving the symmetry of the circumferential distribution of the flow field in the single-vane centrifugal pump, (2), combining CFD numerical simulation and test measurement to manufacture a cutting radial Force self-adjusting impeller, the process of using centrifugal force to balance radial force. details as follows:

[0023] (1) The eccentric method of the impeller rotation center improves the symmet...

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Abstract

The invention discloses a method for self-balancing radial force of a single-blade centrifugal pump. The method comprises the following steps that S1, the circumferential distribution symmetry of a flow field inside the single-blade centrifugal pump is improved by adopting an impeller rotation center eccentricity method according to CFD numerical simulation, and meanwhile, the magnitude and position of eccentricity of the impeller rotation center are determined based on the CFD numerical simulation and test measurement; and S2, the position of the gravity center and the required centrifugal force are determined in combination with CFD numerical simulation and test measurement, and according to the calculated centrifugal force, the appropriate centrifugal force generated when the gravity center deviates from the rotation center is adopted and used for balancing the radial force. The method balances the radial force generated during operation of the pump, and improves the operation stability and reliability of the pump; and the method is adopted, is quick and convenient, can shorten the time consumed in the impeller balance weight machining process greatly, and improves the balance weight 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 asymmetrical during operation, and there is a large hydraulic imbalance. This results in a large residual radial force of the single-vane centrifugal pump, 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 go through multiple balance tests and cutting processes. This method h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/24F04D15/00F04D29/00
CPCF04D29/242F04D15/0088F04D29/007
Inventor 谭林伟施卫东史周浩陆华王振刚杨勇飞
Owner NANTONG UNIVERSITY
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