高转速汽轮机长叶片松拉筋结构分析  

Analysis of Loose Lacing Wire for Long Blades with High Speed Steam Turbines

作　　者：刘全[1] 陈乾林 钱冬杰 李伟[1] LIU Quan;CHEN Qianlin;QIAN Dongjie;LI Wei(Dongfang Turbine Co.,Ltd.,Deyang Sichuan,618000)

机构地区：[1]东方电气集团东方汽轮机有限公司,四川德阳618000

出　　处：《东方汽轮机》2023年第1期8-11,共4页Dongfang Turbine

摘　　要：采用松拉筋结构的叶片,在运行时离心力的作用下,拉筋贴紧叶片拉筋孔,对叶片起到良好的整圈连接性能和阻尼作用,并且结构简洁,对高转速汽轮机长叶片是一种较优的结构选择。然而,拉筋孔局部区域会产生应力集中,如何将应力集中程度降到最低以防止对叶片产生的潜在风险很重要。文章将对高转速汽轮机长叶片的松拉筋连接结构设计进行介绍。For the blade with loose lacing wire structure,due to centrifugal force during operation,lacing wire fit tightly to lacing hole,produce good connection and damping performance to the whole stage blade,and simple structure,it's a better structure choice for long-blades with high-speed steam turbines.However,stress concentration will occur in the local area of lacing hole,how to reduce stress concentration to a minimum to prevent risks to the blades is very important.This article will introduce the design of the loose lacing wire structure for long-blades with high-speed steam turbines.

关 键 词：高转速 长叶片 松拉筋 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]