热力发电
熱力髮電
열력발전
THERMAL POWER GENERATION
2014年
10期
107-109,115
,共4页
王家胜%赵杰%钟晶亮%张世海%徐雪松
王傢勝%趙傑%鐘晶亮%張世海%徐雪鬆
왕가성%조걸%종정량%장세해%서설송
300 MW 机组%汽轮机%转速%飞升%内外缸%疏水系统%窜蒸汽
300 MW 機組%汽輪機%轉速%飛升%內外缸%疏水繫統%竄蒸汽
300 MW 궤조%기륜궤%전속%비승%내외항%소수계통%찬증기
300 MW unit%steam turbine%speed rise%inner and outer cylinder%drainage system
针对某300 MW 机组汽轮机在非挂闸状态下盘车脱扣、升速事故进行了分析。结果表明，汽轮机本体内外缸疏水系统窜蒸汽是造成汽轮机转速飞升的根本原因。对此，将存在缺陷的疏水管道直接引入凝汽器后故障消除，汽轮机转速恢复正常，机组甩负荷试验顺利完成。
針對某300 MW 機組汽輪機在非掛閘狀態下盤車脫釦、升速事故進行瞭分析。結果錶明，汽輪機本體內外缸疏水繫統竄蒸汽是造成汽輪機轉速飛升的根本原因。對此，將存在缺陷的疏水管道直接引入凝汽器後故障消除，汽輪機轉速恢複正常，機組甩負荷試驗順利完成。
침대모300 MW 궤조기륜궤재비괘갑상태하반차탈구、승속사고진행료분석。결과표명，기륜궤본체내외항소수계통찬증기시조성기륜궤전속비승적근본원인。대차，장존재결함적소수관도직접인입응기기후고장소제，기륜궤전속회복정상，궤조솔부하시험순리완성。
By analyzing an abnormal incident of steam turbo-generator's speed rise under unit's turning gear operation state,this paper presents concrete accident treatment schemes and finds the main causes of the accident.The results show that steam channeling between turbine's inner and outer cylinder by drainage system was the major reason for the turbine speed's sudden rise.After the defected drainage pipes were di-rectly introduced to the condenser,the fault was eliminated and the turbine speed returned to normal.Thus the unit load rejection test was successfully carried out.The analyses and disposals of the accident can be good references for unit's design,overhaul and operation and will be a good caution action for some unit's techniques reconstruction and new building projects.
