CAUSE ANALYSIS OF LOW VACUUM FOR UNIT NO.1 IN LAICHENG POWER PLANT AND REMEDY THEREOF

WANG Cheng-liang Laicheng Power Plant

doi:10.19666/j.rlfd.2008.03.023

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CAUSE ANALYSIS OF LOW VACUUM FOR UNIT NO.1 IN LAICHENG POWER PLANT AND REMEDY THEREOF

Thermal Power Generation Issue 3, Pages: 83-84(2008)

更新时间：2025-09-28

- CAUSE ANALYSIS OF LOW VACUUM FOR UNIT NO.1 IN LAICHENG POWER PLANT AND REMEDY THEREOF
- 作者机构：
  
  莱城发电厂
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2008.03.023
  CLC： TM621.3
- Published：2008
- 稿件说明：
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WANG Cheng-liang Laicheng Power Plant. CAUSE ANALYSIS OF LOW VACUUM FOR UNIT NO.1 IN LAICHENG POWER PLANT AND REMEDY THEREOF[J]. Thermal Power Generation, 2008, (3): 83-84.
DOI：

WANG Cheng-liang Laicheng Power Plant. CAUSE ANALYSIS OF LOW VACUUM FOR UNIT NO.1 IN LAICHENG POWER PLANT AND REMEDY THEREOF[J]. Thermal Power Generation, 2008, (3): 83-84. DOI： 10.19666/j.rlfd.2008.03.023.

摘要

2006年11月

莱城发电厂4×300MW机组循环水泵自高速切换低速运行后

经对比发现1号机组凝汽器真空偏低约1.5kPa

凝汽器循环水进水温度高4℃~5℃

导致机组煤耗率增加约3.1g/(kW·h)

经济性显著降低。经过原因分析及处理

消除了真空下降后

提高了1号机组运行的经济性。

Abstract

After switching over the circulating-water pump of 4×300 MW units in Laicheng Power Plant from high speed to low speed operation in November

2006

it had been discovered from comparison that the condenser's vacuum of unit no.1 was somewhat lower than about 1.5 kPa

the inlet water temperature of the circulating-water pump was 4℃~5℃ higher

leading to the coal consumption ratio of said unit being increased by about 3.18 g/(kW·h)

the economic efficiency being obviously lowered. Through cause analysis and remedy

the economic efficiency in operation of unit no.1 has been improved after eliminating the vacuum drop.

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