迷宫压缩机摆线型密封齿结构优化

Structural Optimization of Cycolid Sealing Tooth of the Labyrinth Compressor

针对往复式迷宫压缩机密封泄漏,传统摆线迷宫密封齿无法改变宽深比等问题,对传统摆线迷宫密封齿结构进行优化,提出一种通过改变齿根参数调节宽深比的新型摆线迷宫密封齿。运用Fluent动网格技术模拟分析新型摆线齿结构密封在气缸工作中气体流动特性及密封情况,并与三角形齿、矩形齿密封进行对比。证明新型摆线齿密封性能优于传统摆线齿16.6%~20.8%。并得出新型摆线齿齿顶与齿根长度比对密封性能的影响优劣顺序为:4:1、4:4、4:2、4:3、4:0。而新型摆线型齿密封性能优于矩形齿5%、三角形齿17%。

In view of the problems including sealing leakage of the reciprocating labyrinth compressor and unchangable breadth depth ratio of the traditional cycolid type labyrinth sealing tooth,this paper proposes a new type of cycolid type labyrinth sealing tooth with optimized structure and can be used to adjust the breadth depth ratio while changing dedendum parameters.Fluent dynamic mesh technology is adopted to simulate and analyze the gas flow and sealing performance of the new cycolid type sealing tooth during cylinder operation,and a comparison is carried out between triangular tooth and rectangular tooth seals.The results show that performance of the new cycolid type sealing tooth is 16.6%~20.8%better than the traditional cycolid tooth,and the order of impact of the addendum-dedendum length ratio on sealing performance is 4:1,4:4,4:2,4:3,and 4:0.Sealing performance of the new cycolid tooth is respectively 5%and 17%better than the rectangular tooth and the triangular tooth.