核电厂反应堆主泵推力轴承启动阻力矩测试方法

张健鑫; 谷继品; 陈树明; 王明政; 刘小军

doi:10.13832/j.jnpe.2022.02.0232

核电厂反应堆主泵推力轴承启动阻力矩测试方法

doi: 10.13832/j.jnpe.2022.02.0232

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

详细信息

作者简介:
张健鑫（1989—），男，工程师，现从事核电厂反应堆关键设备设计工作，E-mail: zzxwth@163.com

中图分类号: TL353
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- 文章访问数: 240
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- 被引次数: 0
出版历程
- 收稿日期: 2021-01-29
- 修回日期: 2021-02-25
- 刊出日期: 2022-04-02

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

1.
China Institute of Atomic Energy, Beijing, 102413, China
2.
Hunan SUND Industrial and Technological Co., Ltd., Xiangtan, Hunan, 411102, China

摘要

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。
- 核电厂 /
- 主泵 /
- 推力轴承 /
- 正交试验 /
- 阻力矩
Abstract: 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.
- Nuclear power plant /
- Main pump /
- Thrust bearing /
- Orthogonal test /
- Drag torque

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图 1 试验装置主要组成零部件结构示意图

Figure 1. Schematic Diagram of the Main Components of the Test Device

下载: 全尺寸图片幻灯片

图 2 试验台架示意图

Figure 2. Schematic Diagram of Test Bench

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图 3 扭矩系数与停机时间关系曲线

Figure 3. Relationship Curve between Torque Coefficient and Downtime

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表 1 测试试验台模拟因素

Table 1. Factors Simulated by the Test Bench

影响因素	模拟方式
摩擦副材料特性	采用和真实情况完全相同的推力瓦
表面粗糙度	模拟真实粗糙度
表面膜及摩擦副之间的润滑状况	采用相同牌号润滑油
接触面比压	模拟真实比压
停机时间	模拟真实停机时间
摩擦环境温度	模拟真实润滑油温

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表 2 正交试验结果

Table 2. Results of the Orthogonal Test

序号	粗糙度（Ra）/μm	润滑油温度/℃	比压/ MPa	停机时间/ min	平均扭矩系数
1	0.4	35	1.10	5	0.245
2	0.4	50	1.37		0.250
3	0.4	65	1.71		0.245
4	0.8	65	1.10		0.240
5	0.8	35	1.37		0.224
6	0.8	50	1.71		0.247
7	1.6	50	1.10		0.257
8	1.6	65	1.37		0.247
9	1.6	35	1.71		0.248

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