ANALYSIS AND SOLUTIONS AGAINST THE IMPACT OF ELECTROMAGNETIC VALVE STICKING ON OPERATION OF 220 MW STEAM TURBINE UNIT

FU Jian-guo; CAO Jin-zhong; LIU Jin-chuan; GUO Lei; DU Ming; GU Jun; HAN Bao-yu Henan Jiaozuo Power Plant

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ANALYSIS AND SOLUTIONS AGAINST THE IMPACT OF ELECTROMAGNETIC VALVE STICKING ON OPERATION OF 220 MW STEAM TURBINE UNIT

Thermal Power Generation Vol. 38, Issue 5, Pages: 69-71(2009)

更新时间：2025-09-28

- ANALYSIS AND SOLUTIONS AGAINST THE IMPACT OF ELECTROMAGNETIC VALVE STICKING ON OPERATION OF 220 MW STEAM TURBINE UNIT
- 作者机构：
  
  焦作电厂
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK264.2
- Published：2009
- 稿件说明：
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FU Jian-guo, CAO Jin-zhong, LIU Jin-chuan, et al. ANALYSIS AND SOLUTIONS AGAINST THE IMPACT OF ELECTROMAGNETIC VALVE STICKING ON OPERATION OF 220 MW STEAM TURBINE UNIT[J]. Thermal Power Generation, 2009, 38(5): 69-71.
DOI：

FU Jian-guo, CAO Jin-zhong, LIU Jin-chuan, et al. ANALYSIS AND SOLUTIONS AGAINST THE IMPACT OF ELECTROMAGNETIC VALVE STICKING ON OPERATION OF 220 MW STEAM TURBINE UNIT[J]. Thermal Power Generation, 2009, 38(5): 69-71. DOI：

摘要

介绍了2起220MW汽轮机挂闸电磁阀卡涩所造成的故障。提出了判断挂闸电磁阀卡涩的征象:(1)高限卡涩时危急遮断器大滑阀上的警报油压保持工作值

挂闸电磁阀能够带电

但无法实现挂闸

手动顶压电磁阀铁芯无位移

机头打闸时危急遮断器大滑阀下的附加保安油压也相应发生变化;(2)低位卡涩时危急遮断器大滑阀上的警戒油压过低甚至为零

手动顶压电磁阀铁芯无位移

运行机组就地无法打闸跳机。分析了挂闸电磁阀卡涩对机组运行的影响

并提出了防范挂闸电磁阀卡涩的措施。

Abstract

Presented in this paper are two operation failures caused by the sticking of electromagnetic valves in a steam turbine unit with a capacity of 220MW.Analysis was made to the impact of valve sticking on safe operation of the turbine unit.And some solutions were put forward to prevent such failures.

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