理化检验-物理分册2026，Vol.62Issue(8)：29-34,6.DOI:10.11973/lhjy-wl260036
核级电磁阀长期带电后的首次复位时间延长原因
Reasons for the prolonged first reset time of nuclear grade solenoid valves after long-term electrification
徐大亮1
作者信息
- 1. 大亚湾核电运营管理有限责任公司,深圳 518124
- 折叠
摘要
Abstract
After using a certain type of nuclear grade solenoid valve in a nuclear power plant for a long time,there were multiple instances of prolonged first reset time.The reasons for the prolonged first reset time of the solenoid valve were analyzed using methods such as valve core stroke limit test and comparative grease application test.The results show that the residual lubricating grease on the end face of the solenoid valve pilot piston was the main reason for the prolonged reset time.The viscosity of the grease was high and it was a non-Newtonian fluid,which significantly increased the resistance to the separation of the pilot piston end face and the nut end face,resulting in a delay in the piston separation action and ultimately causing the first reset time of the solenoid valve to be prolonged after being charged for a long time.Special cleaning work would be carried out on residual lubricating grease on the piston end face of in-service solenoid valves.At the same time,the technical specifications for the acceptance of new spare parts would be optimized and improved,and new requirements for long-term live working condition reset performance testing would be added to solve the problem of prolonged first reset time for this type of nuclear grade solenoid valve after long-term electrification.关键词
电磁阀/首次复位时间延长/润滑脂/黏度/非牛顿流体Key words
solenoid valve/prolonged first reset time/grease/viscosity/non-Newtonian fluid分类
通用工业技术引用本文复制引用
徐大亮..核级电磁阀长期带电后的首次复位时间延长原因[J].理化检验-物理分册,2026,62(8):29-34,6.
