参数化机械密封中静环摩擦副相容性设计方法  

Compatibility Design Method of Static Ring Friction Pair in Parametric Mechanical Seal

作　　者：郭天丽 刘晨阳 胡文文 王建磊[2] 贾谦 GUO Tianli;LIU Chenyang;HU Wenwen;WANG Jianlei;JIA Qian(Power Station Service Division of Dongfang Electric Group Dongfang Steam Turbine Co.,Ltd.,Deyang Sichuan 618000,China;School of Mechanical and Precision Instrument Engineering,Xi’an University of Technology,Xi’an Shaanxi 710048,China;Department of Mechanical Engineering,Xi’an Jiaotong University City College,Xi’an Shaanxi 710018,China)

机构地区：[1]东方电气集团东方汽轮机有限公司电站服务事业部,四川德阳618000 [2]西安理工大学机械与精密仪器工程学院,陕西西安710048 [3]西安交通大学城市学院机械工程系,陕西西安710018

出　　处：《润滑与密封》2022年第9期118-124,共7页Lubrication Engineering

基　　金：科技部创新方法工作专项(2019MO10203)。

摘　　要：高温、高压、高速等极端工况对机械密封的设计提出了更高的要求,在对高参数机械密封结构、使用工况及受损件分析的基础之上提出静环摩擦副的相容性设计方法。该方法的核心是在设计过程中考虑机械密封静环摩擦副石墨和不锈钢的相容性问题,相容性的判断依据是石墨环所受热应力是否超过其机械强度许用值。建立静环摩擦副的有限元仿真模型,通过实例对静环摩擦副的相容性问题进行了说明。研究结果表明:通过相容性设计可以调整机械密封静环摩擦副石墨环所受的热应力,减少高参数工况下机械密封失效问题的发生。The higher requirements is put forward for the design of mechanical seals under high temperature,high pressure,high speed and other extreme conditions.Based on the analysis of high parameter mechanical seal structure,working conditions and damaged parts,the static ring friction pair compatibility design method was put forward.The core of this method is to consider the compatibility between graphite and stainless steel in the design process of mechanical seal static ring friction pair.The compatibility is judged by whether the thermal stress of graphite ring exceeds the allowable value of mechanical strength.The finite element simulation model of static ring friction pair was established,and the compatibility problem of static ring friction pair was illustrated by an example.The results show that the thermal stress of the graphite ring of the static ring friction pair of the mechanical seal can be adjusted by the compatibility design,and the failure of the mechanical seal can be reduced under the condition of high parameters.

关 键 词：机械密封 摩擦副 热应力 石墨环 泄漏量 

分 类 号：TH136[机械工程—机械制造及自动化] TB551[理学—物理]