一例300MW汽轮机组抽汽管道断裂诱发的振动

陈炜聪

doi:10.19666/j.rlfd.2009.01.019

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一例300MW汽轮机组抽汽管道断裂诱发的振动

发电技术论坛 | 更新时间：2025-09-28

- 一例300MW汽轮机组抽汽管道断裂诱发的振动
- ANALYSIS OF VIBRATION INDUCED FROM BREAKAGE OF EXTRACTION STEAM PIPELINE FOR A 300MW STEAM TURBINE UNIT
- 热力发电 2009年38卷第1期页码：69-71
- 作者机构：
  
  国电安顺发电有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2009.01.019
  中图分类号： TK268.1
- 纸质出版：2009
- 稿件说明：
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陈炜聪. 一例300MW汽轮机组抽汽管道断裂诱发的振动[J]. 热力发电, 2009,38(1):69-71.

CHEN Wei-congGuodian Anshun Power Generation Co Ltd. ANALYSIS OF VIBRATION INDUCED FROM BREAKAGE OF EXTRACTION STEAM PIPELINE FOR A 300MW STEAM TURBINE UNIT[J]. Thermal power generation, 2009, 38(1): 69-71.
陈炜聪. 一例300MW汽轮机组抽汽管道断裂诱发的振动[J]. 热力发电, 2009,38(1):69-71. DOI： 10.19666/j.rlfd.2009.01.019.

CHEN Wei-congGuodian Anshun Power Generation Co Ltd. ANALYSIS OF VIBRATION INDUCED FROM BREAKAGE OF EXTRACTION STEAM PIPELINE FOR A 300MW STEAM TURBINE UNIT[J]. Thermal power generation, 2009, 38(1): 69-71. DOI： 10.19666/j.rlfd.2009.01.019.

摘要

对300 MW机组运行中因抽汽管道泄漏、断裂而引起的振动进行了分析

认为抽汽管道及低压内缸人孔漏汽改变了凝汽器喉部的温度场分布

引起低压内缸(或两端轴封壳体)变形

从而导致动静碰磨和机组摩擦振动加剧。同时

提出对布置于凝汽器内部的抽汽管道等应加强检查维护。

Abstract

The vibration induced from leakage and breakage of extraction steam pipeline in operation of a 300 MW unit has been analysed.It is believed that the steam leakage from the extraction steam pipeline and from man-hole on the low-pressure inner casing has changed the distribution of temperature field in throat of the condenser

resulting in deformation of the inner casing(or the shell of gland seal at two ends)

and thereby leading to impact-wear between movable and statonary parts

and to intensify rubbing vibration of the unit.At the same time

it has been put forward to strengthen the inspection and maintenance of extraction steam pipes allocated in the condenser.

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