电力与能源
電力與能源
전력여능원
Power and Energy
2014年
5期
614-616
,共3页
气密试验%燃气轮发电机组%漏氢故障
氣密試驗%燃氣輪髮電機組%漏氫故障
기밀시험%연기륜발전궤조%루경고장
Air sealing test%Gas turbine generator unit%Air leakage
为保证机组安全运行，氢冷发电机检修后都要进行气密性试验。介绍了某厂390H 型全氢冷发电机气密试验方法，分析了机组出现的漏氢现象，给出了漏氢故障的检查过程。试验结果表明，密封瓦座内侧中分面漏气是气密试验不合格主要原因。为了减少气密性试验工作量，可以对检修工艺进行优化，在回装发电机两侧轴承上盖之前，应首先检查并确保密封瓦座中分面不漏气，这样可以保证发电机本体气密试验一次性合格。
為保證機組安全運行，氫冷髮電機檢脩後都要進行氣密性試驗。介紹瞭某廠390H 型全氫冷髮電機氣密試驗方法，分析瞭機組齣現的漏氫現象，給齣瞭漏氫故障的檢查過程。試驗結果錶明，密封瓦座內側中分麵漏氣是氣密試驗不閤格主要原因。為瞭減少氣密性試驗工作量，可以對檢脩工藝進行優化，在迴裝髮電機兩側軸承上蓋之前，應首先檢查併確保密封瓦座中分麵不漏氣，這樣可以保證髮電機本體氣密試驗一次性閤格。
위보증궤조안전운행，경랭발전궤검수후도요진행기밀성시험。개소료모엄390H 형전경랭발전궤기밀시험방법，분석료궤조출현적루경현상，급출료루경고장적검사과정。시험결과표명，밀봉와좌내측중분면루기시기밀시험불합격주요원인。위료감소기밀성시험공작량，가이대검수공예진행우화，재회장발전궤량측축승상개지전，응수선검사병학보밀봉와좌중분면불루기，저양가이보증발전궤본체기밀시험일차성합격。
Air sealing test must be done after overhaul of the generator for the safe operation of the unit.Air sealing test method of a 390H type gas turbine generator unit was given.Fault reason and test process were analyzed.By test and analysis,it was found that air leakage from inner side middle plane of sealing bearing is the main reason of the fault.To improve the efficiency of air sealing test work,overhaul method should be im-proved.Air leakage from inner side middle plane of sealing bearing must be checked before installing two gen-erator bearing upper pads.With the method,air sealing experiment can be realized by single test.
