A THOROUGH INQUIRY ABOUT ALLOWCATION OF FEED-WATER PUMPS FOR 300MW AIR-COOLED UNIT AND COOLING SCHEME FOR EXHAUST STEAM FROM SMALL TURBINE THEREOF

ZHAO Enchan1; LUI Li1; YU Baoguo21.North China Electric Power Design Engineering Corporation

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A THOROUGH INQUIRY ABOUT ALLOWCATION OF FEED-WATER PUMPS FOR 300MW AIR-COOLED UNIT AND COOLING SCHEME FOR EXHAUST STEAM FROM SMALL TURBINE THEREOF

更新时间：2025-09-28

- A THOROUGH INQUIRY ABOUT ALLOWCATION OF FEED-WATER PUMPS FOR 300MW AIR-COOLED UNIT AND COOLING SCHEME FOR EXHAUST STEAM FROM SMALL TURBINE THEREOF
- Thermal Power Generation Vol. 39, Issue 12, Pages: 65-67(2010)
- 作者机构：
  
  1. 华北电力设计院工程有限公司
  2. 北京能源投资(集团)有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621
- Published：2010
- 稿件说明：
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ZHAO Enchan1, LUI Li1, YU Baoguo21.North China Electric Power Design Engineering Corporation. A THOROUGH INQUIRY ABOUT ALLOWCATION OF FEED-WATER PUMPS FOR 300MW AIR-COOLED UNIT AND COOLING SCHEME FOR EXHAUST STEAM FROM SMALL TURBINE THEREOF[J]. Thermal power generation, 2010, 39(12): 65-67.
DOI：

ZHAO Enchan1, LUI Li1, YU Baoguo21.North China Electric Power Design Engineering Corporation. A THOROUGH INQUIRY ABOUT ALLOWCATION OF FEED-WATER PUMPS FOR 300MW AIR-COOLED UNIT AND COOLING SCHEME FOR EXHAUST STEAM FROM SMALL TURBINE THEREOF[J]. Thermal power generation, 2010, 39(12): 65-67. DOI：

摘要

针对300 MW空冷机组的设计运行条件

对机组给水泵的配置方案和给水泵汽轮机(小汽机)的排汽冷却方案进行了分析与比较

得出小汽机间接空冷比直接空冷运行可靠性略高;给水泵配置方案1比方案2初投资高

年运行费用高

但其运行安全性稍高于方案2;在夏季用电高峰期小汽机排气冷却为直接冷却方案时

采用1台50%容量的汽动给水泵(汽泵)+1台50%容量的电动给水泵(电泵)方案运行

可降低运行风险

提高运行经济性。

Abstract

Directing agains the operating conditions designed for 300 MW direct air-cooled unit

the allowcation of feed-water pumps and the cooling scheme for exhaust steam from small turbine used for the food-water pump of unit have been analysed and compared

the conlusion obtained is as follows:the reliability in operation of indirect air-cooling for small turbine is somewhat higher than that of direct air cooling;the initial investment and anual operation cost of feed-water pump allocaton scheme no.1 are higher than that of scheme no.2

however

the safety in operation of scheme no.1 is somewhat higher than that of scheme no.2;during the time of adopting the direct-cooling scheme for exhaust steam from small turbine in peak-load period of summer

one turbine——dirven feed-water pump with 50% capacity and one motor-driven feed water pump with 50% capacity have to be put into operation

thus

the risk in operation can be reduced

enhancing the economic efficiency.

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