Calculation model and energy saving analysis of circulating water pump

SHEN Farong; ZHAO Ming; CUI Haibo; DU Jingqi; WANG Peihong; YIN Jie

doi:10.19666/j.rlfd.201707077

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Calculation model and energy saving analysis of circulating water pump

Thermal Power Generation Vol. 47, Issue 3, Pages: 12-17(2018)

更新时间：2025-09-28

- Calculation model and energy saving analysis of circulating water pump
- 作者机构：
  
  1. 云南电力试验研究院(集团)有限公司
  2. 云南电网公司电力科学研究院
  3. 东南大学能源与环境学院
  4. 南京瑞松信息科技有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201707077
  CLC： TK264.1
- Published Online：07 March 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
SHEN Farong, ZHAO Ming, CUI Haibo, et al. Calculation model and energy saving analysis of circulating water pump[J]. Thermal Power Generation, 2018, 47(3): 12-17.
DOI：

SHEN Farong, ZHAO Ming, CUI Haibo, et al. Calculation model and energy saving analysis of circulating water pump[J]. Thermal Power Generation, 2018, 47(3): 12-17. DOI： 10.19666/j.rlfd.201707077.

摘要

循环水泵是火电机组主要耗能设备之一

具有较大的节能空间。本文建立定速泵、变频泵以及不同泵组合的计算模型

针对2台双速泵

1台定速泵和1台变频泵

以及2台变频泵等不同的组合

在离散流量和连续流量情况下进行实例计算

得到不同改造方案下泵的耗功情况。结果表明:采用2台变频泵在各种工况下都能达到最佳运行状态;在双速泵可实现的各工况中

当流量为18.68 m3/s时

2台变频泵运行比2台双速泵运行节能182.6 k W;当流量为15.58 m3/s时

2台变频泵运行比1台变频泵和1台定速泵节能778.5 k W。本文的计算与分析可为循环水泵技术改造及火电机组节能优化提供参考。

Abstract

The circulating water pump is one of the main energy consumer equipment in thermal power plants. Hence

it has large energy-saving space. This study establishes calculation models of constant speed pumps

variable frequency pumps and the combination of various pumps. Example calculations are executed under both the discrete and continuous flow conditions for two constant speed pumps

the combination of one constant speed pump and one variable frequency pump

two variable frequency pumps and other different combinations. And then the power consumptions of pumps under different modification schemes are obtained. The results show that

the combination of two variable frequency pumps can work in the best status under various working conditions. Under the conditions of being able to be realized by the two-speed pumps

when the flow rate is 18.68 m3/s

two variable frequency pumps can save energy over 182.6 k W than the combination of two two-speed pumps. When the flow rate is 15.58 m3/s

the combination of two variable frequency pumps can save energy over 778.5 k W than the combination of one variable frequency pump and one constant speed pump. The calculation and analysis can provide a guidance for technical reconstruction of circulating water pump and energy-saving optimization of thermal power plant.

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