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Dynamic balance testing method for simulating mass of media in pump impeller runner

A test method and technology of pump impellers, which are applied to components of pumping devices for elastic fluids, pumps, pump controls, etc., can solve problems such as increased pump vibration, unbalanced impeller mass, and different quality, and reduce vibration , Improve the effect of dynamic balance accuracy

Active Publication Date: 2017-07-07
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the dynamic balance test of the impeller wheel is carried out in the air, but in actual working conditions, the physical properties of the medium flowing through the fluid channel between the impellers are quite different from that of the air, and the dynamic balance test has been carried out in the air and corrected When the impeller is used in practice, the inconsistency of the impeller channels causes the quality of the medium filled in each channel to be different, resulting in an imbalance in the mass of the impeller, which in turn aggravates the vibration of the pump, and is further transmitted outward through the supporting parts of the pump and the inlet and outlet pipes.

Method used

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  • Dynamic balance testing method for simulating mass of media in pump impeller runner

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Embodiment Construction

[0022] A dynamic balance test method for simulating the medium quality in the pump impeller channel of the present invention will be described in detail below with reference to the drawings and embodiments.

[0023] In order to simulate the quality of the medium in the flow channel between two adjacent blades of the impeller, first select the medium material with the same or similar density as the medium conveyed by the pump. The medium material is solid at room temperature and can be attached to the impeller parts and in the impeller flow channel. Liquid at high temperatures and can be filled into or purged from the impeller flow passages.

[0024] Fill the above materials in the impeller flow channel under high temperature conditions to simulate the medium quality in the impeller flow channel, and then cool to room temperature so that the material adheres to the impeller parts and does not fall off in the impeller flow channel, and then removes the impeller front cover and ba...

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Abstract

The invention belongs to the technical field of vane pumps and particularly relates to a dynamic balance testing method for simulating the mass of media in a pump impeller runner. The dynamic balance testing method for simulating the mass of the media in the pump impeller runner comprises the first step of medium adhesion, the second step of cooling and solidification, the third step of taking out of excess materials, the fourth step of modification of unbalance and the fifth step of removal of the simulated media. By means of the dynamic balance testing method for simulating the mass of the media in the pump impeller runner, the technical problems that impeller mass unbalance can still be caused when an impeller subjected to dynamic balance testing in air and modification is in practical use, and pump vibration is aggravated are solved. As for the method, the testing conditions are approximate to actual conditions, the dynamic balance precision of the impeller can be remarkably improved, therefore vibration of a pump in operation is reduced, and the method is suitable for occasions having high requirements for pump vibration under special application conditions.

Description

technical field [0001] The invention belongs to the technical field of vane pumps, and in particular relates to a dynamic balance method for simulating the quality of a medium in a pump impeller channel. Background technique [0002] After the impeller of the vane pump is manufactured, in order to eliminate the machining deviation, it needs to be dynamically balanced on a dynamic balancing machine to ensure that the center of gravity of the vane coincides with its geometric center. At present, the dynamic balance test of the impeller wheel is carried out in the air, but in actual working conditions, the physical properties of the medium flowing through the fluid channel between the impellers are quite different from that of the air, and the dynamic balance test has been carried out in the air and corrected When the impeller is used in practice, the inconsistency of the impeller channels causes the mass of the medium filled in each channel to be different, resulting in an imb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D15/00F04D29/66
CPCF04D15/0088F04D29/66
Inventor 刘立志杨松赵雪岑邓礼平蔡龙奇
Owner NUCLEAR POWER INSTITUTE OF CHINA
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