S109FA机组汽轮机高压通流部分故障分析  

Fault Analysis for High-pressure Flow Path of a S109FA Power Turbine

作　　者：俞立凡[1] 

机构地区：[1]杭州华电半山发电有限公司,杭州310015

出　　处：《发电设备》2011年第2期125-127,共3页Power Equipment

摘　　要：针对S109FA机组中汽轮机在运行10 000 h后出现带负荷能力下降的情况进行了研究和分析,先后排除了高压主汽联合阀MSCV滤网堵塞、阀芯脱落等因素,根据试验数据,并运用排除法最后确认原因为高压缸内通流面积减小,通流受阻,导致机组不能带到额定负荷。并提出了预防监测的措施。The load-carrying capacity of a S109FA power turbine began to drop after10 000h operation.In order to solve above problem,experimental tests and analyses were carried out,during which probable factors,such as blockage in high-pressure main steam control valve and falling-off of valve disc,were all excluded.Based on experimental data and using exclusive method,the causes were finally determined as the reduced area of flow passage inside high-pressure cylinder,which resulted in blocked flow path and subsequently lowered load-carrying capacity of the unit.Precautionary measures are put forward for solving the problem.

关 键 词：燃气-蒸汽联合循环 汽轮机 通流部分 流动阻碍 预防监测 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]