摘要
某热电厂有中温中压背压式和抽汽凝汽式机组,由于背压式机组的排汽压力较低,不能满足热用户需求,因此长期停运。冬季高负荷期间,外供抽汽流量及厂自用汽流量均较大,将抽凝式机组回热系统中高压加热器、除氧器用汽及厂自用汽改由背压式机组提供。对改造前后的机组热力系统进行热力计算,结果表明这种改造是可行的,可为热电厂技术改造提供依据。
A thermal power plant has some back pressure steam turbines and extracting and condensing steam turbines of medium temperature and medium pressure. Because of low back pressure, back pressure steam turbines can not satisfy the need of heat consumer and have shut down for a long time. In the winter,external and house-service steam supply is very large at high load. To realize normal operation, back pressure steam turbines can provide high pressure heater and deaerator in regenerative system of extracting and condensing steam turbines and house- service steam supply with steam. This paper presents a thermodynamic calculation for thermodynamic system retrofit and analysis of both economy and feasibility. It supplies the basis for thermal power plant technological improvoment
出处
《热力发电》
CAS
北大核心
2009年第5期66-68,共3页
Thermal Power Generation
关键词
背压式汽轮机
抽汽凝汽式汽轮机
回热系统
热力系统简捷计算
back pressure steam turbine, extracting and condensing steam turbine, regenerative system,simple method for thermal system
