核电厂反应堆主泵推力轴承启动阻力矩测试方法  

Test Method on Starting Drag Torque of the Thrust Bearing of the Reactor Main Pump in Nuclear Power Plant

作　　者：张健鑫[1] 谷继品[1] 陈树明[1] 王明政[1] 刘小军 Zhang Jianxin;Gu Jipin;Chen Shuming;Wang Mingzheng;Liu Xiaojun(China Institute of Atomic Energy,Beijing,102413,China;Hunan SUND Industrial and Technological Co.,Ltd.,Xiangtan,Hunan,411102,China)

机构地区：[1]中国原子能科学研究院,北京102413 [2]湖南崇德工业科技有限公司,湖南湘潭411102

出　　处：《核动力工程》2022年第2期232-236,共5页Nuclear Power Engineering

摘　　要：为了获得核电厂反应堆主泵推力轴承在寿期内的极限启动阻力矩,确保执行事故余热排出功能的辅助电机可以在极端工况启动主泵,提出了推力轴承启动阻力矩(指启动瞬间的阻力矩)的测试方法并设计了试验装置,采用正交试验法对影响推力轴承启动阻力矩的3个影响因素(粗糙度、比压、润滑油温)进行研究,采用单因素法测试不同停机时间(指静止加载时间)对推力轴承启动阻力矩的影响,研究表明3个影响因素在规定的控制范围内变化时,启动阻力矩变化较小,而停机时间对推力轴承启动阻力矩影响较大。基于试验确定的极限启动阻力矩开展辅助电机设计,通过了推力轴承样机与主泵样机的反复启停试验验证。本文研究可为辅助电机启动阻力矩的设计提供准确可靠的输入。In order to obtain the ultimate starting drag torque of the thrust bearing of the reactor main pump in nuclear power plant during its lifetime,and ensure that the auxiliary motor performing the accident residual heat removal function can start the main pump under extreme conditions,a test method of the starting drag torque(which refers to the drag torque at the moment of starting)of the thrust bearing was proposed and a test device was designed.The orthogonal test method was used to study the three influencing factors(roughness,specific pressure and lubricating oil temperature)that affect the starting drag torque of the thrust bearing.The single factor method was used to test the influence of different downtime(which refers to the static loading time)on the starting drag torque of the thrust bearing.The results show that the starting drag torque changes little when the three factors change within the specified control range,but the downtime has a great impact on the starting drag torque of the thrust bearing.The design of the auxiliary motor was carried out based on the ultimate starting drag torque determined by the test,and has been verified by repeated start-stop tests of the thrust bearing prototype and the main pump prototype.The research in this paper can provide accurate and reliable input for the design of the starting drag torque of the auxiliary motor.

关 键 词：核电厂 主泵 推力轴承 正交试验 阻力矩 

分 类 号：TL353[核科学技术—核技术及应用]