RETROFIT MEASURES FOR BEARING TEMPERATURE SURPASSING SET STANDARD OF FANS
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RETROFIT MEASURES FOR BEARING TEMPERATURE SURPASSING SET STANDARD OF FANS
Thermal Power GenerationVol. 41, Issue 2, Pages: 79-80(2012)
作者机构:
成都电力机械厂
作者简介:
基金信息:
DOI:
CLC:TH432
Published:2012
稿件说明:
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WANG Shiping, FANG Yingmin, ZHANG Jin Chengdu Electric Power Machinary Works. RETROFIT MEASURES FOR BEARING TEMPERATURE SURPASSING SET STANDARD OF FANS[J]. Thermal power generation, 2012, 41(2): 79-80.
DOI:
WANG Shiping, FANG Yingmin, ZHANG Jin Chengdu Electric Power Machinary Works. RETROFIT MEASURES FOR BEARING TEMPERATURE SURPASSING SET STANDARD OF FANS[J]. Thermal power generation, 2012, 41(2): 79-80.DOI:
RETROFIT MEASURES FOR BEARING TEMPERATURE SURPASSING SET STANDARD OF FANS
摘要
某660MW机组引风机为1 000r/min的高速风机
在机组满负荷运行时其轴承温度高达90℃(报警值)以上。对此
经计算
将轴承的冷却风道由3个增加为5个
使轴承温度下降至73.38℃。改造后的试运行结果表明
在机组满负荷运行工况下
引风机轴承温度正常
可实现长期稳定运行。
Abstract
The induced draf(ID) fan of one 600 MW unit is a 1 000 r/min high-speed air fan
the heightened speed of revolution makes the bearing temperature to reach the alarm value of 90 ℃.For this
through calculation
the number of cooling air ducts is increased from three to five
the bearing temperature can be reduced from 90 ℃ to 73.38 ℃.The trial operation after retrofitting shows that the bearing temperature of the ID fan is normal under full load operation of unit