大型汽轮机循环水泵改造选型问题分析  

Analysis on Type Selection of Circulating Water Pump for Large Steam Turbines

作　　者：牟春华[1] 程东涛[1] 居文平[1] 马汀山[1] MU Chunhua;CHENG Dongtao;JU Wenping;MA Tingshan(Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054

出　　处：《中国电力》2018年第5期106-110,共5页Electric Power

基　　金：中国华能集团公司科学技术项目(HNKJ15-H09)~~

摘　　要：循环水泵改造选型过程中容易出现循环水泵选型不合理的问题,直接影响改造效果。通过对循环水泵选型原则的分析,提出循环水泵选型的关键是要循环水泵设计工作点和循环水系统阻力特性相匹配,以试验的方式实测循环水系统阻力特性,可为循环水泵改造选型提供科学依据。以某300 MW汽轮机组循环水泵改造选型为例进行分析,以实测循环水系统阻力特性为选型依据,循环水泵选型结果较原设计选型结果科学合理。The improper selection of circulating water pump type may affect the revamping effect directly and does not occur rarely.Based on the analysis of the selection principles, it is proposed that the key is to match the design working point of the circulatingwater pump with the resistance characteristics of the circulating water system. In addition, the resistance characteristics of thecirculating water system from actual measurements can provide scientific support for the selection of the circulating water pumptypes. Taking the upgrade of a 300 MW steam turbine as an example, the selection of circulating water pump type is based on themeasured resistance characteristics of the circulating water system. The selected circulating water pump type is more scientific andreasonable than that in the original design.This work is supported by Science and Technology Program of China Huaneng Group Co., Ltd. （No.HNKJ15-H09）.

关 键 词：火电机组 汽轮机 循环水泵 改造 选型 阻力特性 

分 类 号：TK264.1[动力工程及工程热物理—动力机械及工程] TM621[电气工程—电力系统及自动化]