基于流固耦合的旋叶式压缩机排气阀片振动噪声预估与试验

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摘要为揭示旋叶式压缩机排气阀片振动特性，建立阀片单质点模型，研究排气工况、几何参数与阀片振动位移的关系，得到升程限制器改进结构；而后，建立改进阀片排气结构流固耦合模型，研究阀片流动特性；进而，基于流场湍流参数建立排气阀片宽频噪声模型，研究改进阀片噪声分布规律，借助旋叶式压缩机噪声试验台，对改进前后压缩机整机噪声进行测试。研究表明：改进阀片参数，有效提高了平贴时间，降低了阀片振动速度峰峰值；阀片工作中消气槽流场处存在一定程度的负压区域，阀片关闭时排气孔处流场存在回流现象；排气结构气动噪声源主要集中在阀片与阀座发生撞击的表面和消气槽附近；改进后压缩机部分频域段降噪明显降低，后部场点噪声幅值最大降低6%。
关键词：旋叶式压缩机；排气阀片；单质点模型；流固耦合；排气噪声

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	罗胜曦1
	何泽银1
	2
	陶平安2
	刘红梅2
	胡立志2
	孙世政1

关键词 ：旋叶式压缩机, 排气阀片, 单质点模型, 流固耦合, 排气噪声

Abstract：In order to reveal the vibration characteristics of the reed valve plate of rotary vane compressor, a single-particle model of the valve plate was established, and the relationship between the exhaust condition, geometric parameters and the vibration displacement of the valve plate was studied; Then, the fluid structure interaction model of the improved valve plate exhaust structure is established to study the flow characteristics of the valve plate; Then, based on the turbulence parameters of the flow field, the broadband noise model of the reed valve is established, and the noise distribution law of the improved valve is studied. The results show that: by improving the valve parameters, the flat sticking time is effectively increased, and the peak to peak vibration velocity of the valve is reduced; There is a negative pressure area in the flow field of the degassing slot when the valve is working, and there is a backflow phenomenon in the flow field of the exhaust hole when the valve is closed; The aerodynamic noise sources of the exhaust structure are mainly concentrated on the surface where the valve plate collides with the valve seat and near the degassing groove; After the improvement, the noise reduction of the compressor in the frequency domain is obviously reduced, and the maximum noise amplitude of the rear field point is reduced by 6%.
Key words: rotary vane compressor; reed valve; single-particle model; fluid structure interaction; exhaust noise

Key words： rotary vane compressor reed valve single-particle model fluid structure interaction exhaust noise

收稿日期: 2021-06-15 出版日期: 2022-10-15

引用本文:

罗胜曦1，何泽银1,2，陶平安2，刘红梅2，胡立志2，孙世政1. 基于流固耦合的旋叶式压缩机排气阀片振动噪声预估与试验[J]. 振动与冲击, 2022, 41(19): 266-273.
LUO Shengxi1, HE Zeyin1,2, TAO Ping’an2, LIU Hongmei2, HU Lizhi2, SUN Shizheng1. Prediction and tests for vibration and noise of exhaust valve plate of rotary vane compressor based on fluid-structure interaction. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(19): 266-273.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I19/266

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