Numerical and Experimental Study On the Influence of Honeycomb Bushing Wear On the Leakage Flow Characteristics of Labyrinth Seal

Wenfeng Xu, Zeming Wang, Dan Sun, Guozhe Ren, Yu Li, Dezheng Lu
{"title":"Numerical and Experimental Study On the Influence of Honeycomb Bushing Wear On the Leakage Flow Characteristics of Labyrinth Seal","authors":"Wenfeng Xu, Zeming Wang, Dan Sun, Guozhe Ren, Yu Li, Dezheng Lu","doi":"10.1115/1.4064824","DOIUrl":null,"url":null,"abstract":"\n Honeycomb bushing wear has a significant effect on the leakage characteristics of the labyrinth seal. In this paper, four kinds of honeycomb bushing labyrinth seals were designed and processed. The leakage characteristics of honeycomb bushing labyrinth seal were studied experimentally under different inlet and outlet pressure ratios and sealing clearance conditions. At the same time, the numerical model of honeycomb bushing labyrinth seals were established, and the influence of honeycomb bushing wear on the flow field characteristics of labyrinth seals was analyzed by numerical simulation. The existing leakage formula was modified by the correction coefficient method. The results show that the leakage of four kinds of honeycomb bushing labyrinth seals increases with the increase of pressure ratio and sealing clearance, and the sealing effect of unworn honeycomb bushing labyrinth seal is the best. With the increase in wear depth, the leakage of the honeycomb bushing labyrinth seal increases, and the maximum leakage can be increased by 59.59 %. The wear groove weakens the throttling effect of the labyrinth, causing the leakage of the seal to increase. The increase of the depth of the wear groove changes the flow area and the direction of the jet, so that the leakage increases slightly. The theoretical formula of leakage is corrected by the correction coefficient method. The value calculated by the corrected theoretical formula of leakage is in good agreement with the experiment, and the error is within 5%. It meets the practical application of the project.","PeriodicalId":508252,"journal":{"name":"Journal of Engineering for Gas Turbines and Power","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Engineering for Gas Turbines and Power","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/1.4064824","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Honeycomb bushing wear has a significant effect on the leakage characteristics of the labyrinth seal. In this paper, four kinds of honeycomb bushing labyrinth seals were designed and processed. The leakage characteristics of honeycomb bushing labyrinth seal were studied experimentally under different inlet and outlet pressure ratios and sealing clearance conditions. At the same time, the numerical model of honeycomb bushing labyrinth seals were established, and the influence of honeycomb bushing wear on the flow field characteristics of labyrinth seals was analyzed by numerical simulation. The existing leakage formula was modified by the correction coefficient method. The results show that the leakage of four kinds of honeycomb bushing labyrinth seals increases with the increase of pressure ratio and sealing clearance, and the sealing effect of unworn honeycomb bushing labyrinth seal is the best. With the increase in wear depth, the leakage of the honeycomb bushing labyrinth seal increases, and the maximum leakage can be increased by 59.59 %. The wear groove weakens the throttling effect of the labyrinth, causing the leakage of the seal to increase. The increase of the depth of the wear groove changes the flow area and the direction of the jet, so that the leakage increases slightly. The theoretical formula of leakage is corrected by the correction coefficient method. The value calculated by the corrected theoretical formula of leakage is in good agreement with the experiment, and the error is within 5%. It meets the practical application of the project.
蜂窝衬套磨损对迷宫密封泄漏流量特性影响的数值和实验研究
蜂窝衬套的磨损对迷宫密封的泄漏特性有很大影响。本文设计并加工了四种蜂窝衬套迷宫密封件。实验研究了不同进出口压力比和密封间隙条件下蜂窝衬套迷宫密封的泄漏特性。同时,建立了蜂窝衬套迷宫密封的数值模型,并通过数值模拟分析了蜂窝衬套磨损对迷宫密封流场特性的影响。通过修正系数法对现有的泄漏公式进行了修正。结果表明,四种蜂窝衬套迷宫密封件的泄漏量随压力比和密封间隙的增大而增大,未磨损的蜂窝衬套迷宫密封件的密封效果最好。随着磨损深度的增加,蜂窝衬套迷宫密封的泄漏量也随之增加,最大泄漏量可增加 59.59 %。磨损沟槽削弱了迷宫的节流作用,导致密封泄漏量增加。磨损槽深度的增加改变了流动面积和射流方向,使泄漏量略有增加。用修正系数法对泄漏量的理论公式进行修正。修正后的泄漏量理论公式计算值与实验结果吻合良好,误差在 5%以内。符合项目的实际应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信