摘要
为解决应用于火电机组的水环泵汽蚀问题,通过对某600 MW直接空冷机组抽真空系统出力进行实际测试,提出了水环泵实际运行中存在最大抽吸出力点,并分析了出力降低原因,结合水环泵转子裂纹情况,分析了水环泵汽蚀原因,并在此基础上设计了前置除水罗茨–水环泵组系统,结合测试数据及泵组选型理论,提出了现有泵组的替代方案,新的泵组系统可有效解决汽蚀且节能效果显著。
In order to solve the problem of cavitation of the electric water ring vacuum pump used in thermal power plants, throughthe test on the vacuum system output of a 600-MW direct air-cooling unit, this paper proposes that there exists the maximum suctionoutput in the water ring pump operation, and analyzes the reasons why the output may decrease. Then the cavitation of the water ringpump is also investigated associated with the issue of water ring pump rotor cracks. Based on the study, a front dewatering roots-water ring pump group system is designed. By taking the test data and the pump group selection theory into account, an alternativescheme for the existing pump group is put forward, which can effectively tackle the problem and remarkably save the energy.
作者
安亚军
张志勇
陈瑞君
孙健
赵自愿
申梦岭
AN Yajun;ZHANG Zhiyong;CHEN Ruijun;SUN Jian;ZHAO Ziyuan;SHEN Mengling(Inner Mongolia Jinglong Power Generation Co.,LTD.,Fengzhen 012100,China;Beijing Energy Group Co.,LTD.,Beijing 100022,China;Nuclear Engineering Research and Design Co.,LTD.,Beijing 101300,China)
出处
《中国电力》
CSCD
北大核心
2018年第11期32-37,共6页
Electric Power
关键词
火电厂
直接空冷机组
水环泵
汽蚀
空气泄漏率
等温压缩
压比
流导
thermal power plant
direct air-cooling unit
water ring pump
cavitation
air leakage rate
isothermal compression
pressure ratio
conductance
