汽轮机快速冷却装置密封圈断裂失效过程模拟  

Simulation of Fracture Failure of Sealing Ring in Steam Turbine Rapid Cooling Unit

作　　者：薛勇 唐鹏涛 XUE Yong;TANG Pengtao(SPIC&GLC Binhai Electric Power Generation Co.,Ltd.,Yancheng 224500,China)

机构地区：[1]国家电投集团协鑫滨海发电有限公司,江苏盐城224500

出　　处：《机械制造与自动化》2021年第5期62-65,75,共5页Machine Building & Automation

摘　　要：选取半径为1.5 cm的橡胶密封圈,构建汽轮机快速冷却装置与密封圈实体模型,依据ANSYS软件模拟失效过程,通过改变油压与压缩率增加模型应力,以最大接触应力与最大切应力作为失效判据,进行失效过程模拟。模拟结果证明:在增大油压与压缩率的过程中,当油压达到15 MPa、压缩率为10%时,应力达到最大;汽轮机快速冷却装置密封圈出现断裂失效的现象。The rubber seal ring with 1.5 cm radius is selected to build seal ring solid model of the steam turbine rapid cooling device.According to ANSYS software,the failure process is simulated.By changing the oil pressure and compression rate,the model stress is increased,and the maximum contact and shear stresses are defined as failure criteria to simulate the failure process.The simulation results show that in the process of increasing oil pressure and compression ratio,when the oil pressure reaches 15 MPa and the compression ratio is 10%,the stress attains the maximum,and fracture failure take places in the sealing ring of the rapid cooling device of steam turbine.

关 键 词：汽轮机 快速冷却装置 密封圈 断裂失效 接触管理器 

分 类 号：TH137[机械工程—机械制造及自动化]