Prediction and tests for vibration and noise of exhaust valve plate of rotary vane compressor based on fluid-structure interaction

被引：0
|
作者：
Luo S. [1 ]
He Z. [1 ,2 ]
Tao P. [2 ]
Liu H. [2 ]
Hu L. [2 ]
Sun S. [1 ]
机构：
[1] School of Mechatronic and Vehicle Engineering, Chongqing Jiao Tong University, Chongqing
[2] Chongqing Construction Automotive Systems Co, Ltd, Chongqing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2022年 / 41卷 / 19期
关键词：
exhaust noise; exhaust valve plate; fluid-structure interaction; rotary vane compressor; single mass point model;
D O I：
10.13465/j.cnki.jvs.2022.19.034
中图分类号：
学科分类号：
摘要：
Here, to reveal vibration characteristics of exhaust valve plate of rotary vane compressor, a single mass point model of the valve plate was established, and relations among exhaust working conditions, geometric parameters and valve plate vibration displacement were studied, and the improved structure of lift limiter was obtained. Then, the fluid -structure interaction model of the improved valve exhaust structure was established to study valve flow characteristics. Furthermore, based on flow field turbulence parameters, the broadband noise model of exhaust valve was established to study noise distribution law of the improved valve. By means of a rotary vane compressor noise test platform, total noise of compressor before and after improving was tested. The results showed that improving valve plate parameters can effectively increase flat pasting time, and reduce vibration velocity peak-peak values of valve plate; there is a certain degree of negative pressure zone in flow field of degassing tank during valve plate operating, and there is a backflow phenomenon in flow field at exhaust hole during valve plate being closed; the aerodynamic noise source of exhaust structure is mainly concentrated on the surface where valve plate and valve seat collide and near degassing tank; after improving, noise levels in partial frequency bands of compressor are significantly reduced, and noise amplitude at rear field points deceases by 6% at most. © 2022 Chinese Vibration Engineering Society. All rights reserved.
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页码：266 / 273
页数：7
相关论文
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