热力发电
熱力髮電
열력발전
THERMAL POWER GENERATION
2014年
8期
158-160
,共3页
赵建民%安志勇%靳旺宗%訾娟%赵闫涛
趙建民%安誌勇%靳旺宗%訾娟%趙閆濤
조건민%안지용%근왕종%자연%조염도
300 MW机组%间隙性振动%油档结碳%碰磨%气密油档改造
300 MW機組%間隙性振動%油檔結碳%踫磨%氣密油檔改造
300 MW궤조%간극성진동%유당결탄%팽마%기밀유당개조
330 MW unit%gap vibration%carbon deposition%friction%airtight%oil baffle transformation
国华某电厂亚临界4×330 MW汽轮机组,均在稳定运行数月后2、3号瓦出现较为严重的间隙性振动问题。经过对同类型机组调研和分析,初步判断为油挡积碳引起的碳化物摩擦振动。通过调整润滑油箱的微负压值以及对气密油档进行改造,使2号瓦振动幅值稳定在65μm,1号瓦振动幅值降至10μm,机组振动幅值正常,运行稳定。
國華某電廠亞臨界4×330 MW汽輪機組,均在穩定運行數月後2、3號瓦齣現較為嚴重的間隙性振動問題。經過對同類型機組調研和分析,初步判斷為油擋積碳引起的碳化物摩抆振動。通過調整潤滑油箱的微負壓值以及對氣密油檔進行改造,使2號瓦振動幅值穩定在65μm,1號瓦振動幅值降至10μm,機組振動幅值正常,運行穩定。
국화모전엄아림계4×330 MW기륜궤조,균재은정운행수월후2、3호와출현교위엄중적간극성진동문제。경과대동류형궤조조연화분석,초보판단위유당적탄인기적탄화물마찰진동。통과조정윤활유상적미부압치이급대기밀유당진행개조,사2호와진동폭치은정재65μm,1호와진동폭치강지10μm,궤조진동폭치정상,운행은정。
Serious intermittent vibration occurred on No.2 and No.3 tile of four subcritical 330 MW unit turbines in a power plant,after several months'stable operation.Thus,investigation on the same type units was conducted.Carbide frictional vibration caused by carbon deposition on oil baffle was considered as the maj or reason.By regulating micro negative pressure of the lubrication oil tank and performing retrofitting on the airtight oil gear,the large vibration problem was successfully overcome.The vibration amplitude of the No.2 tile stabled at 65μm,and the fluctuation of the No.1 tile reduced to 10μm,indicating the unit vi-bration return normal.