CAJ | 학술논문

给出了适用于透平压缩机迷宫密封泄漏量的修正模型,并用修正模型对变结构参数下的泄漏量进行规律研究.通过采用工程常用迷宫密封泄漏量理论公式,计算了不同压比下透平压缩机典型平滑型和曲折型迷宫密封流量系数,对比了试验结果,修正了流量系数值;在此基础上,进一步研究了不同间隙和齿数下泄漏量的规律,以研究参数变化对泄漏量的影响.研究结果表明:对于平滑型密封结构,修正模型的修正系数可选择在0.8~1.2;对于曲折型密封结构,修正模型的修正系数可选择在0.7~0.8.本文提供了一种较为准确、工程性的透平压缩机迷宫密封泄漏量模型的修正系数.
급출료괄용우투평압축궤미궁밀봉설루량적수정모형,병용수정모형대변결구삼수하적설루량진행규률연구.통과채용공정상용미궁밀봉설루량이론공식,계산료불동압비하투평압축궤전형평활형화곡절형미궁밀봉류량계수,대비료시험결과,수정료류량계수치;재차기출상,진일보연구료불동간극화치수하설루량적규률,이연구삼수변화대설루량적영향.연구결과표명:대우평활형밀봉결구,수정모형적수정계수가선택재0.8~1.2;대우곡절형밀봉결구,수정모형적수정계수가선택재0.7~0.8.본문제공료일충교위준학、공정성적투평압축궤미궁밀봉설루량모형적수정계수.
@@@@The corrected model of labyrinth seals leakage in turbine compressor was provided, and the correction model is used for regular research on the leakage rate under varied structure & parameter. Through the common use of the theoretical formula of leakage rate in labyrinth seals, the labyrinth seal flow rate coefficients of turbine compressor in typical smoothing type and zigzag type were calculated under different pressure ratios. After compared different experiment results, the value of flow coefficient were modified. In order to study the influence of parameter variation on the leakage rate, the paper studied the regular research of the leakage rate under different clearances or tooth numbers further on the basis of above. Research results showed that for the sealing structure in smoothing type, the correction coefficient of the correction model can be chosen between 0.8~1.2; for the sealing structure in zigzag type, the correction coefficient can be chosen between 0.7~0.8. A more accurate, engineering correction coefficient of the model of labyrinth seal leakage of turbine compressor was provided in this paper.