排汽压力对汽轮机运行优化试验结果的影响研究  

Influence of exhaust temperature on experimental results of operation optimization for steam turbines

作　　者：陈胜利[1] 荆涛[1] 李高潮[1] 吕凯[1] 章治国[1] 穆琳[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032

出　　处：《热力发电》2013年第4期28-30,共3页Thermal Power Generation

基　　金：国家科技支撑计划项目(2011BAA04B02);中国华能集团公司科技项目(HNKJ10-TPRI02)

摘　　要：汽轮机组运行优化试验结果通常为汽轮机排汽压力修正到设计值下的最优定、滑压运行曲线,而不考虑实际排汽压力变化的影响,因此该优化试验结果并非机组实际运行的最佳经济值。对此,以某湿冷汽轮机组为例,研究排汽压力变化对汽轮机运行优化试验结果的影响规律。结果表明,不同的汽轮机排汽压力对应的优化结果不同,排汽压力增大,最佳主蒸汽压力增大,定、滑压临界点负荷减小。同时,给出了优化调整的手段,以提高机组运行的经济性。The experimental results of operation optimization on steam turbines is usually the optimum constant/sliding operating curve with the exhaust pressure revised to the designed value,without considering of the actual varying exhaust pressures.So it is not the optimal economic value for the actual operation.Thus,taking a wet cooling steam turbine as an example,the influence of exhaust pressure variation on the operation optimization results was investigated.The results showed that,different exhaust pressures corresponded to different optimized results.With an increase in exhaust pressure,the optimum main steam pressure went up,while the constant/sliding pressure critical load decreased.Moreover,the optimization adjustment method was put forward to improve the annual operation economy of the unit.

关 键 词：超临界 600 MW汽轮机 运行优化 排汽压力 主蒸汽压力 

分 类 号：TK264.1[动力工程及工程热物理—动力机械及工程]