动力工程学报
動力工程學報
동력공정학보
JOURNAL OF POWER ENGINEERING
2012年
5期
356-361
,共6页
范鑫%秦建明%李明%付晨鹏
範鑫%秦建明%李明%付晨鵬
범흠%진건명%리명%부신붕
超临界%汽轮机组%经济性%优化运行%热效率
超臨界%汽輪機組%經濟性%優化運行%熱效率
초림계%기륜궤조%경제성%우화운행%열효솔
super critical%steam turbine unit%economy%optimized operation%thermal efficiency
阐述了汽轮机变负荷运行的优化原理,介绍了某电厂600MW超临界汽轮机组变负荷运行优化试验的情况,并按照机组高调阀的实际流量特性,通过不同典型负荷下(包括540MW、480MW、420MW、360MW、330MW和300MW共6个负荷)的热效率对比试验,得到了机组优化后的变负荷运行方式,考虑了机组排汽压力的修正,给出了相应运行曲线的拟合函数.结果表明:优化后的运行方式在机组低负荷运行时,汽轮机热耗率明显降低,优化后的运行方式有效地提高了机组变负荷运行时的经济性.
闡述瞭汽輪機變負荷運行的優化原理,介紹瞭某電廠600MW超臨界汽輪機組變負荷運行優化試驗的情況,併按照機組高調閥的實際流量特性,通過不同典型負荷下(包括540MW、480MW、420MW、360MW、330MW和300MW共6箇負荷)的熱效率對比試驗,得到瞭機組優化後的變負荷運行方式,攷慮瞭機組排汽壓力的脩正,給齣瞭相應運行麯線的擬閤函數.結果錶明:優化後的運行方式在機組低負荷運行時,汽輪機熱耗率明顯降低,優化後的運行方式有效地提高瞭機組變負荷運行時的經濟性.
천술료기륜궤변부하운행적우화원리,개소료모전엄600MW초림계기륜궤조변부하운행우화시험적정황,병안조궤조고조벌적실제류량특성,통과불동전형부하하(포괄540MW、480MW、420MW、360MW、330MW화300MW공6개부하)적열효솔대비시험,득도료궤조우화후적변부하운행방식,고필료궤조배기압력적수정,급출료상응운행곡선적의합함수.결과표명:우화후적운행방식재궤조저부하운행시,기륜궤열모솔명현강저,우화후적운행방식유효지제고료궤조변부하운행시적경제성.
A description is being made to the optimization principle of varying load operation of steam turbine,together with an introduction to the optimization experiment for a 600 MW supercritical steam turbine under varying load operation conditions.According to actual flow characteristics of the HP control valve,an optimized operation mode is obtained by comparing its thermal efficiencies respectively corresponding to 6 typical loads(540 MW,480 MW,420 MW,360 MW,330 MW and 300 MW),based on which fitting functions for relevant operation curves are proposed on the basis of corrected exhaust pressure.Results show that the optimized operation mode may help to reduce the heat consumption rate of steam turbine under low load condition and accordingly improve its economy in varying load operation.