Insufficient output of a condensation pump:analysis and treatment

TANG Guangtong1; LI Changsong1; SUN Kai2 1.Hebei Electric Power Research Institute

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Insufficient output of a condensation pump:analysis and treatment

更新时间：2025-09-28

- Insufficient output of a condensation pump:analysis and treatment
- Thermal Power Generation Vol. 42, Issue 6, Pages: 94-95(2013)
- 作者机构：
  
  1. 河北省电力研究院
  2. 中电投石家庄良村热电有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH38
- Published：2013
- 稿件说明：
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TANG Guangtong1, LI Changsong1, SUN Kai2 1.Hebei Electric Power Research Institute. Insufficient output of a condensation pump:analysis and treatment[J]. Thermal power generation, 2013, 42(6): 94-95.
DOI：

TANG Guangtong1, LI Changsong1, SUN Kai2 1.Hebei Electric Power Research Institute. Insufficient output of a condensation pump:analysis and treatment[J]. Thermal power generation, 2013, 42(6): 94-95. DOI：

摘要

对某NLO350-400型凝结水泵在试运过程中出力不足

单台泵无法满足机组额定负荷运行的问题进行分析

发现凝结水泵吸入部分诱导轮、首级叶轮不能满足凝结水泵的出力要求

凝结水流量大时凝结水泵叶轮吸入口处抗汽蚀能力不足。通过重新设计

加工该泵的首级叶轮、诱导轮、诱导轮室、泵入口喇叭口4个部位后

在机组满负荷情况下

单台凝结水泵在工频和变频状态下均运行稳定

出力达到了设计要求。

Abstract

The output of NLO350-400 condensate pump in a newly built power plant was insufficient during commissioning process

namely the single pump can not meet the needs of rated load operation.Analysis showed that the inducer at suction part of the condensate pump and the first stage impeller can not satisfy the output requirements of the condensate pump

and the anti-steam erosion ability of impeller entrance part of the condensate pump was insufficient when the condensate water flow was large.After redesign and processing the first stage impeller

the inducer

the inducer room and the bell mouth at inlet of the pump

the single condensate pump can run stably under both constant and variable frequency working conditions

when the unit was in rated load operation.The output of condensate pump satisfied the design requirements.

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