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

Thermal Power Generation Issue 9, Pages: 51-53(2003)

更新时间：2025-09-28

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

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

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Huangshi Power Plant,Huadian Corporation Hubei Branch

Shenhua Guoneng Energy Group Corporation Limited

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