滚动转子压缩机排气阀倾侧运动数值研究  

Numerical Study of the Torsional Movement of the Discharge Valve of a Rotary Compressor

作　　者：曾旺 潘曦 谢军龙[1] ZENG Wang;PAN Xi;XIE Junlong(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学能源与动力工程学院,武汉430074

出　　处：《工程热物理学报》2024年第9期2640-2645,共6页Journal of Engineering Thermophysics

基　　金：中国博士后科学基金资助项目(No.2022M721239)。

摘　　要：排气阀是压缩机的关键组成部件,良好的阀片动力学特性是压缩机经济性和可靠性的保障。为探究滚动转子压缩机排气阀阀片的运动特性,本文利用计算流体力学方法(CFD)建立了三维流固耦合计算模型。在此基础上,仿真计算得到了压缩机排气阶段压力云图、排气阀阀片圆头部分的位移曲线以及撞击过程应力分布云图。研究结果表明,阀片圆头部分靠近斜切口侧先撞击升程限制器,但在压差和扭转力矩作用下应力较大处出现在阀片圆头部分靠近气缸侧和阀片颈部,容易导致阀片断裂。The discharge valve is a key component of the compressor,and the good dynamic characteristics of the valve plate could guarantee the economy and reliability of compressor.In order to investigate the rotary compressor discharge valve motion characteristics,this paper uses the computational fluid dynamics method(CFD)to establish a three-dimensional fluid-solid interaction calculation model.On this basis,the simulation has obtained the pressure contour in rotary compressor,the displacement curve and the impact stress distribution contour of the discharge valve.The results show that the head of valve plate near the oblique incision side impacts lift limiter firstly,but the larger stress appears in the head of valve plate near the cylinder side and the neck of valve plate under the action of the pressure difference and torsional moment,which is easy to bring about the valve plate fracture.

关 键 词：滚动转子压缩机 排气阀 倾侧 流固耦合 

分 类 号：TB652[一般工业技术—制冷工程]