CAUSES RESULTING IN THE STEAM-GOVERNING VALVE LEVEL FALL-OFF FOR 300 MW STEAM TURBINES

LI Yan-dong; LI Zhi-xuMawan General Power Plant

doi:10.19666/j.rlfd.2007.08.015

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CAUSES RESULTING IN THE STEAM-GOVERNING VALVE LEVEL FALL-OFF FOR 300 MW STEAM TURBINES

更新时间：2025-09-28

- CAUSES RESULTING IN THE STEAM-GOVERNING VALVE LEVEL FALL-OFF FOR 300 MW STEAM TURBINES
- Thermal Power Generation Issue 8, Pages: 64-65(2007)
- 作者机构：
  
  妈湾发电总厂
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2007.08.015
  CLC： TK263
- Published：2007
- 稿件说明：
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LI Yan-dong, LI Zhi-xuMawan General Power Plant. CAUSES RESULTING IN THE STEAM-GOVERNING VALVE LEVEL FALL-OFF FOR 300 MW STEAM TURBINES[J]. Thermal power generation, 2007, (8): 64-65.
DOI：

LI Yan-dong, LI Zhi-xuMawan General Power Plant. CAUSES RESULTING IN THE STEAM-GOVERNING VALVE LEVEL FALL-OFF FOR 300 MW STEAM TURBINES[J]. Thermal power generation, 2007, (8): 64-65. DOI： 10.19666/j.rlfd.2007.08.015.

摘要

针对妈湾发电总厂5号、6号汽轮机在运行中发生的调节汽阀阀杆脱落问题

从结构设计和安装工艺等方面进行了分析。分析认为

汽轮机组结构设计中存在油动机限位调整不当的缺陷

造成阀杆联接螺纹受力过大损坏

导致了调节汽阀阀杆脱落。提出了避免阀杆脱落的措施。

Abstract

Directing against the problem concerning steam-governing valve lever fall-off occurred in operation of steam turbines no.5 and no.6 of Mawan General Power Plant

analysis has been carried out from aspects of structure design and installation technology etc..It is believed from analysis that the defect of unsuitable limit adjustment in servomotor existing in the structure design of steam turbines makes the screwed coupling of the said valve level being damaged due to over-stress

leading to the steam-governing valve lever falloff.For this

solving measures for avoiding the valve lever fall-off have been put forward.

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