汽轮机测温套管强度校核方法及应用  

Strength Analysis Method and Application of Steam Turbine Thermowell

作　　者：王良[1] 陈泓波[1] 俞胤杰 何成[1] 张春梅[1] WANG Liang;CHEN Hong-bo;YU Yin-jie;HE Cheng;ZHANG Chun-mei(Hangzhou Steam Turbine Company Limited,Hangzhou Zhejiang 310022,China)

机构地区：[1]杭州汽轮机股份有限公司,浙江杭州310022

出　　处：《机械研究与应用》2020年第1期85-88,92,共5页Mechanical Research & Application

基　　金：杭州市科学技术委员会重大科技创新专项(编号:20172011A02)。

摘　　要：针对汽轮机蒸汽管道测温套管的应用现状,分析了套管在涡流脱落作用下的受力及振动机理。基于ASME PTC 19.3-TW2010中提出的有限元算法,研究了套管频率和强度分析的计算方法和判定准则,并通过实例对比验证了计算方法的准确性和可靠性。该方法的应用对于提高汽轮机运行的安全性意义重大。Aiming at the current application of thermowell mounted on the steam turbine pipeline,the force and vibration mechanism of the thermowell impacted by vortex shedding were analyzed in this paper. Based on the finite element method proposed in ASME PTC 19.3-TW2010,the calculation method and criteria for the thermowell frequency and strength analysis were researched,and the calculation accuracy and reliability were verified by cases comparison finally. The application of this method is of great significance for improving the safety of the steam turbine operation.

关 键 词：涡旋脱落 测温套管 共振 自然频率 激励频率 

分 类 号：TH114[机械工程—机械设计及理论]