STUDY ON AND PRACTICE OF PIPE-BLOWING USING STEAM UNDER CONDITION WITHOUT BOILER WATER CIRCULATION PUMP FOR ONCE-THROUGH BOILER OF ULTRA-SUPERITICAL 1 000 MW UNIT

CUI Zhendong1; LI Xinhu1; YIN Fengjun2 1.Electric Power Science Research Institute under Guangdong Power Grid Corporation

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STUDY ON AND PRACTICE OF PIPE-BLOWING USING STEAM UNDER CONDITION WITHOUT BOILER WATER CIRCULATION PUMP FOR ONCE-THROUGH BOILER OF ULTRA-SUPERITICAL 1 000 MW UNIT

Thermal Power Generation Vol. 40, Issue 7, Pages: 74-77(2011)

更新时间：2025-09-28

- STUDY ON AND PRACTICE OF PIPE-BLOWING USING STEAM UNDER CONDITION WITHOUT BOILER WATER CIRCULATION PUMP FOR ONCE-THROUGH BOILER OF ULTRA-SUPERITICAL 1 000 MW UNIT
- 作者机构：
  
  1. 广东电网公司电力科学研究院
  2. 广东惠州平海发电厂有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.2
- Published：2011
- 稿件说明：
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CUI Zhendong1, LI Xinhu1, YIN Fengjun2 1.Electric Power Science Research Institute under Guangdong Power Grid Corporation. STUDY ON AND PRACTICE OF PIPE-BLOWING USING STEAM UNDER CONDITION WITHOUT BOILER WATER CIRCULATION PUMP FOR ONCE-THROUGH BOILER OF ULTRA-SUPERITICAL 1 000 MW UNIT[J]. Thermal Power Generation, 2011, 40(7): 74-77.
DOI：

CUI Zhendong1, LI Xinhu1, YIN Fengjun2 1.Electric Power Science Research Institute under Guangdong Power Grid Corporation. STUDY ON AND PRACTICE OF PIPE-BLOWING USING STEAM UNDER CONDITION WITHOUT BOILER WATER CIRCULATION PUMP FOR ONCE-THROUGH BOILER OF ULTRA-SUPERITICAL 1 000 MW UNIT[J]. Thermal Power Generation, 2011, 40(7): 74-77. DOI：

摘要

广东平海发电厂有限公司超超临界1 000MW机组直流锅炉采用832t/h最大保护直流流量

因炉水循环泵不能投运

导致机组起动阶段锅炉给水温度仅50℃左右

严重低于设计值(105℃)。对此

通过在锅炉起动排放系统上增加一路到除氧器的临时回收系统

实现了超超临界机组锅炉无炉水循环泵吹管

满足了机组冲转的参数要求。

Abstract

The once-through boiler of ultra-supercritical 1 000 MW unit in Guangdong Pinghai Power Plant Co Ltd

adopts maximum protecting once-through flow rate of 832 t/h

owing to the boiler water circulating pump(BWCP) can't be put into service

the feed-water temperature of boiler in the stage of start-up only can reach about 50 ℃

it is far lower than the designed value 105 ℃.For this

a temporary recovery system to the deaerator was added onto the discharging system during the time of boiler start-up

the pipe-blowing of ultra-supercritical unit under condition without BWCP has been realized

satisfying the requirement of parameters for rotation-impulsing.

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