CAJ | 학술논문

以往复式压缩机交错型迷宫密封结构为研究对象，采用流固耦合分析方法对不同齿形角下的密封结构内部流场、气缸及活塞结构进行同步联合求解，分析齿形角对迷宫密封性能的影响。分析结果表明：迷宫密封的泄漏量随齿形角增大呈先减小后增大趋势，当齿形角为30°时，膨胀空腔内的涡旋最为强烈，能量耗散最为彻底，整体密封性能最好；流场与固体结构的相互作用对流场分布产生影响，从而对流体泄漏量产生影响，因此采用流固耦合分析方法较流体模型分析方法的结果更接近于理论值，采用流固耦合分析方法进行的三维模拟也更加贴近工程实际。
이왕복식압축궤교착형미궁밀봉결구위연구대상，채용류고우합분석방법대불동치형각하적밀봉결구내부류장、기항급활새결구진행동보연합구해，분석치형각대미궁밀봉성능적영향。분석결과표명：미궁밀봉적설루량수치형각증대정선감소후증대추세，당치형각위30°시，팽창공강내적와선최위강렬，능량모산최위철저，정체밀봉성능최호；류장여고체결구적상호작용대류장분포산생영향，종이대류체설루양산생영향，인차채용류고우합분석방법교류체모형분석방법적결과경접근우이론치，채용류고우합분석방법진행적삼유모의야경가첩근공정실제。
Taking the staggered labyrinth seal configuration of reciprocating compressor as research objective,the inter?nal flow field and structure deformation for different tooth profile angle were solved synchronously using Fluent software, and the effect of tooth profile angle on the performance of labyrinth seal under fluid?structure interaction was analyzed.The results indicate that,with the increase of the angle of seal teeth,the leakage rate of labyrinth seal presents the trend of first decrease and then increase.When the tooth profile angle is 30°,the labyrinth seal has the strongest vortex in expansion cav?ity,the most complete energy loss,and therefore has the best sealing performance. The interaction between flow field and structure has an influence on the distribution of flow field,thus affects the fluid leakage.Therefore the result by fluid?struc?ture interaction analysis method is closer to the theoretical value than that by fluid model,and the 3?D simulation by fluid?structure interaction analysis method is closer to the engineering practice.