300 MW汽轮机组通流改造前、后热力性能试验研究  

Experimental Study on Thermal Performance of 300MW Steam Turbine before and after Flow Remoulding

作　　者：刘达 LIU Da(Huadian Electric Power Science Research Institute)

机构地区：[1]华电电力科学研究院有限公司,浙江杭州310032

出　　处：《电站系统工程》2023年第6期29-30,共2页Power System Engineering

摘　　要：对某300 MW亚临界汽轮机组进行热力性能试验研究,通过对比通流改造前、后以及改造完成运行4年后的热力性能试验数据,分析通流改造技术对热耗率的影响,并且重点阐述运行4年后,热力性能下降的原因。通流改造可以极大提升汽轮机的经济性,汽封间隙增大、缸内缺陷,是导致通流改造运行4年后汽轮机热力性能降低的主要原因,通流改造完成运行4年后汽轮机组经济性仍然优于通流改造前。The thermal performance of a 300MW subcritical steam turbine is studied.The influence of the flow remoulding technology on the heat dissipation rate is analyzed by comparing the thermal performance test data before and after the transformation and after the completion of the operation.Focusing on four years after the operation,the reasons for the decline in thermal performance.Through the transformation of the flow remoulding can greatly enhance the economic efficiency of the steam turbine,the gap between the steam seal and cylinder defect are the main reasons for the decrease of the thermal performance of the steam turbine after four years of operation.After four years of operation,The economic efficiency of the steam turbine is still superior to that before the flow.

关 键 词：300MW汽轮机 热力性能试验 通流改造 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]