CAUSE ANALYSIS OF SCREWED HANGER ROD BREAKAGE ON CONSTANT FORCE HANGING BRACKET FOR MAIN STEAM PIPELINE OF 300 MW UNIT IN ONE POWER PLANT

KANG Yu-jun; WANG Jun-min; WANG Bi-ning; QIN Guang-wei; CHEN Sheng-guang; HUANG Zhong-sheng Xi'an Thermal Power Research Institute Co Ltd

doi:10.19666/j.rlfd.2008.12.026

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CAUSE ANALYSIS OF SCREWED HANGER ROD BREAKAGE ON CONSTANT FORCE HANGING BRACKET FOR MAIN STEAM PIPELINE OF 300 MW UNIT IN ONE POWER PLANT

更新时间：2025-09-28

- CAUSE ANALYSIS OF SCREWED HANGER ROD BREAKAGE ON CONSTANT FORCE HANGING BRACKET FOR MAIN STEAM PIPELINE OF 300 MW UNIT IN ONE POWER PLANT
- Thermal Power Generation Vol. 37, Issue 12, Pages: 99-102(2008)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2008.12.026
  CLC： TM621
- Published：2008
- 稿件说明：
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KANG Yu-jun, WANG Jun-min, WANG Bi-ning, et al. CAUSE ANALYSIS OF SCREWED HANGER ROD BREAKAGE ON CONSTANT FORCE HANGING BRACKET FOR MAIN STEAM PIPELINE OF 300 MW UNIT IN ONE POWER PLANT[J]. Thermal power generation, 2008, 37(12): 99-102.
DOI：

KANG Yu-jun, WANG Jun-min, WANG Bi-ning, et al. CAUSE ANALYSIS OF SCREWED HANGER ROD BREAKAGE ON CONSTANT FORCE HANGING BRACKET FOR MAIN STEAM PIPELINE OF 300 MW UNIT IN ONE POWER PLANT[J]. Thermal power generation, 2008, 37(12): 99-102. DOI： 10.19666/j.rlfd.2008.12.026.

摘要

介绍了某电厂300 MW机组主蒸汽管恒力吊架螺纹吊杆断裂情况

通过材质、断口分析和断裂力学计算表明

断裂为吊杆受到异常的拉伸+弯曲疲劳载荷作用所致

并与吊杆转轴锈蚀相关。对此

建议对运行时间较长且性能下降的恒力吊架进行全面检查并逐步更换

以确保管道系统安全。

Abstract

The situation of screwed hanger rod breakage on costant force hanging bracket for main steam pipeline of 300 MW unit in one power plant has been presented.Through material quality inspection

fracture analysis

and breakage mechanics calculation

it shows that the quality and norm of said hanger rod are conform to the requirements of standard

the causes leading to breakage of the hanger rod are due to effects of abnormal tension+bending fatigue load

and being related to rotating shaft corrosion of the constant force hanging bracket.For this

it is recommented to conprehensively inspect the constant force hanging bracket

which has longer operation period and lowered performance

and being gradually replaced

to ensure safety of the pipeline system.

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