压缩机吸气阀变形模拟及结构优化

Simulation and structural optimization of deformation of compressor suction valve

基于吸气阀变形研究,建立吸气阀流固耦合模型,探究吸气阀在一个工作循环中产生的纵向位移变形和横向位移变形。结果表明,吸气阀的最大纵向位移变形为2.4319 mm,最大横向位移变形为0.0665 mm,吸气阀的应变主要集中在螺栓孔处且纵向位移影响较大。根据吸气阀的应力应变分布规律,添加不同尺寸肋片对吸气阀结构进行优化,并分析对比肋片尺寸对吸气阀变形的影响。优化表明,当吸气阀添加肋片尺寸为25 mm×4 mm×0.1 mm时,可显著减小吸气阀纵向位移及应变。

Based on the research on the deformation of the suction valve,a fluid structure coupling model of the suction valve was established,and the longitudinal and transverse displacement deformation generated by the suction valve in one working cycle was studied.The results show that the maximum longitudinal displacement deformation of the suction valve is 2.4319 mm,and the maximum transverse displacement deformation is 0.0665 mm.The strain of the suction valve is mainly concentrated at the bolt hole and the longitudinal displacement has a significant impact.According to the stress-strain distribution law of the suction valve,different sizes of ribs are added to optimize the structure of the suction valve,and the influence of rib size on the deformation of the suction valve is analyzed and compared.Optimization shows that when the rib size of the suction valve is 25 mm×4 mm×0.1 mm,the longitudinal displacement and strain of the suction valve can be significantly reduced.