给水泵汽轮机高背压供热改造技术分析与应用研究  

Technical Analysis and Application Research on High Back Pressure Heat Supply Transformation of Feed Pump Turbines

作　　者：姚传波 边技超 Yao Chuanbo;Bian Jichao(Harbin Thermal Power Co.,Ltd.of Guodian Corporation,Harbin 150060,Heilongjiang,China;Special Industrial Steam Turbine Plant,China Energy Construction Group Beijing Power Equipment Group,Beijing 102401,China)

机构地区：[1]国电哈尔滨热电有限公司,哈尔滨150060 [2]中国能源建设集团北京电力设备总厂有限公司,北京102401

出　　处：《电站辅机》2020年第3期1-3,共3页Power Station Auxiliary Equipment

摘　　要：分析了针对给水泵汽轮机进行高背压改造的主要技术及实例。以某热电公司2号机组2台汽动给水泵汽轮机为高背压改造对象,给水泵汽轮机入口蒸汽参数基本不变,要求改造后其既能满足冬季高背压供热运行工况的要求,又能满足非采暖期纯凝工况运行的要求;另外,小机出力须满足主机运行所需的所有工况的需求,且在各种负荷工况下均能安全、稳定、高效连续运行。改造后性能试验结果表明,在满足各工况出力的前提下,2台小机在采暖期额定工况下的平均效率由改造前的78.56%提升到81.07%,实现了预期目标,取得了明显的经济效益。This paper analyzes the main technology and examples of high back pressure reformation of feed pump turbine.Taking two feed pump turbines of No.2 unit of a Thermal Power Company.as the object of high back pressure reformation,under the condition that the steam parameters at the inlet of the feed pump turbine are basically unchanged,it is required that the retrofitted feed pump turbine can not only meet the requirements of high back pressure heating operation in winter,but also meet the requirements of pure condensation operation in non-heating period.In addition,the output of small turbine must meet the requirements of all operating conditions required by the main engine,and it can operate safely,stably,efficiently and continuously under various load conditions.The results of performance test show that the average efficiency of the two small turbines in the rated condition of heating period is increased from 78.56%to 81.07%under the premise of meeting the output of various working conditions.The expected target is achieved and obvious economic benefits are achieved.

关 键 词：给水泵汽轮机 优化设计 高背压改造 效率 

分 类 号：TM621[电气工程—电力系统及自动化]