Security analysis of blade-disc in governing stage under various sequence valve modes

CHANG Dongfeng; JIA Hongjin; JIANG Hao; GU Weiwei

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Security analysis of blade-disc in governing stage under various sequence valve modes

更新时间：2025-09-28

- Security analysis of blade-disc in governing stage under various sequence valve modes
- Thermal Power Generation Vol. 45, Issue 10, Pages: 89-93(2016)
- 作者机构：
  
  1. 西安西热节能技术有限公司
  2. 华能金陵发电有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK263.3
- Published：2016
- 稿件说明：
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CHANG Dongfeng, JIA Hongjin, JIANG Hao, et al. Security analysis of blade-disc in governing stage under various sequence valve modes[J]. Thermal power generation, 2016, 45(10): 89-93.
DOI：

CHANG Dongfeng, JIA Hongjin, JIANG Hao, et al. Security analysis of blade-disc in governing stage under various sequence valve modes[J]. Thermal power generation, 2016, 45(10): 89-93. DOI：

摘要

以某600 MW汽轮机调节级叶片为对象

采用有限元方法

对不同配汽方式下调节级整圈叶片-轮盘系统的结构应力、振动特性、瞬态动力响应和动应力

以及疲劳寿命进行了计算分析。结果表明:不同配汽方式下

调节级叶轮叶片系统静强度和振动特性尚属安全;但动应力和疲劳寿命变化幅度较大

其中调节阀在(1号+2号)-3号-4号的顺序阀配置方式下疲劳寿命缩短至6.7年

已不满足设计要求。

Abstract

Taking the governing stage of a 600 MW unit steam turbine as the research object

the finite element method was applied to investigate the structural stress

vibration characteristics

transient dynamic response

dynamic stress and fatigue life of the governing stage

under various sequence valve modes.The results show that

sequence valve modes have great influence on the dynamic stress and fatigue life of the governing stage

although the static intensity and transient dynamic response are security.

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