CAUSE ANALYSIS OF ROLLER-CASING BREAKAGE FOR MVM25R TYPE COAL PULVERIZER

doi:10.19666/j.rlfd.2003.09.017

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CAUSE ANALYSIS OF ROLLER-CASING BREAKAGE FOR MVM25R TYPE COAL PULVERIZER

更新时间：2025-09-28

- CAUSE ANALYSIS OF ROLLER-CASING BREAKAGE FOR MVM25R TYPE COAL PULVERIZER
- Thermal Power Generation Issue 9, Pages: 51-53(2003)
- 作者机构：
  
  1. 珠海发电厂
  2. 珠海发电厂,广东,珠海,519050
  3. ,广东,珠海,519050
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2003.09.017
  CLC： TK223
- Published：2003
- 稿件说明：
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CAUSE ANALYSIS OF ROLLER-CASING BREAKAGE FOR MVM25R TYPE COAL PULVERIZER[J]. Thermal power generation, 2003, (9): 51-53.
DOI：

CAUSE ANALYSIS OF ROLLER-CASING BREAKAGE FOR MVM25R TYPE COAL PULVERIZER[J]. Thermal power generation, 2003, (9): 51-53. DOI： 10.19666/j.rlfd.2003.09.017.

摘要

珠海电厂一期 2台 70 0MW机组锅炉所配置的MVM2 5R磨煤机的 7个辊套未到设计寿命 120 0 0h便先后发生断裂。断裂口宏观分析、金相检验表明

辊套的断裂主要是由于制造工艺缺陷所致。对此

改进了辊套的制作工艺

并重新调整了磨辊的加载油压

Abstract

Seven roller-casings of MVM 25R type coal pulverizers allocated to boilers of two units in Zhuhai Power Plant have been broken early or later before reaching the designed service-life of 12000h. The macrostructure analysis and the metallographic examination of broken surface show

the main cause of the roller-casing breakage is the bad quality of manufacture. In order to prevent the roller-casing from breakage

the technology of manufacturing roller-casings has been improved

and the hydrculic oil pressure applied on rollers being readjusted.

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Related Author

GU Weiwei

ZHANG Yonghai

LI Yuan

YU Xiaobing

SHI Zhigang

LIU Jiali

YAO Wei

WANG Guifang

Related Institution

Xi’an Thermal Power Research Institute Co., Ltd.

Xi’an TPRI Energy Conservation Technology Co., Ltd.

Xi'an Thermal Power Research Institute Co.,Ltd.

Huangshi Power Plant,Huadian Corporation Hubei Branch

Shenhua Guoneng Energy Group Corporation Limited

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