红水河
紅水河
홍수하
HONGSHUI RIVER
2014年
4期
56-58
,共3页
水轮机%热电阻%焊接工艺
水輪機%熱電阻%銲接工藝
수륜궤%열전조%한접공예
turbine%thermal resistor%welding technology
∶水力发电测温电阻的设置是为了动态监测水轮发电机组导轴承的受热以及定子铁芯、线圈的发热情况,从中判断机组是否处于正常受控状态。而由于热电阻制造、安装工艺造成温度信号误报一直困扰着电厂运行人员和检修维护人员,严重时可造成机组事故停机。文章首先论述了水轮机组轴承测温电阻制造安装时常见的问题,接着针对这些问题展开探讨,提出改进意见及处理对策。大化水电厂5号机组轴承、定子铁芯和线圈测温系统经改造后投运2年半,至今未出现过一例因热电阻问题而发生的故障,这对减少设备的维护工作量,降低设备故障率,确保机组的安全运行起到了关键的作用。
∶水力髮電測溫電阻的設置是為瞭動態鑑測水輪髮電機組導軸承的受熱以及定子鐵芯、線圈的髮熱情況,從中判斷機組是否處于正常受控狀態。而由于熱電阻製造、安裝工藝造成溫度信號誤報一直睏擾著電廠運行人員和檢脩維護人員,嚴重時可造成機組事故停機。文章首先論述瞭水輪機組軸承測溫電阻製造安裝時常見的問題,接著針對這些問題展開探討,提齣改進意見及處理對策。大化水電廠5號機組軸承、定子鐵芯和線圈測溫繫統經改造後投運2年半,至今未齣現過一例因熱電阻問題而髮生的故障,這對減少設備的維護工作量,降低設備故障率,確保機組的安全運行起到瞭關鍵的作用。
∶수력발전측온전조적설치시위료동태감측수륜발전궤조도축승적수열이급정자철심、선권적발열정황,종중판단궤조시부처우정상수공상태。이유우열전조제조、안장공예조성온도신호오보일직곤우착전엄운행인원화검수유호인원,엄중시가조성궤조사고정궤。문장수선논술료수륜궤조축승측온전조제조안장시상견적문제,접착침대저사문제전개탐토,제출개진의견급처리대책。대화수전엄5호궤조축승、정자철심화선권측온계통경개조후투운2년반,지금미출현과일례인열전조문제이발생적고장,저대감소설비적유호공작량,강저설비고장솔,학보궤조적안전운행기도료관건적작용。
In hydropower projects, the thermal resistor is set for dynamic monitoring of the heated conditions of the guide bearing of hydro-generator unit and the heating conditions of the stator core and coil, so as to judge the opera-tion conditions of unit. However, the false temperature signals, caused by manufacturing and erection technologies of thermal resistor, always trouble the operators and the maintenance personnel, which even cause emergency shutdown in serious false alarms. The paper discusses the common problems encountered during manufacturing and erecting the thermal resistor for turbine generator unit bearing, and proposes some improvement suggestions and countermeasures. After improvement, no false signal had been received from the temperature measuring system of the bearing, stator core and coil of No. 5 unit of Dahua hydropower station since been put into operation in the past two and a half years, which played a key role in reducing equipment maintenance workload and equipment failure rate and in ensuring safe operation of unit.