1.问题型号6CL-6BD汽轮机,锦西化工机械有限公司生产。该型机组主要问题是汽轮机调节阀和主汽阀卡涩,尤其是在事故停车中关不到位,造成机组波动。虽经检修且更换阀杆,仍未彻底消除卡涩。事故停车时,需操作人员在第一时间先关闭主汽阀,
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD TO-126 Plastic-Encapsulate Transistors BD135/BD137/BD139 TRANSISTOR (NPN) FEATURES ·High Current(1.5A) ·Low Voltage(80V) MAXIMUM RATINGS* T A=25℃ unless otherwise noted Value Symbol Parameter BD135 BD137 BD139 Units VCBO Collector-Base Voltage 45 60 80 V VCEO Collector-Emitter Voltage 45 60 80 V VEBO Emitter-Base Voltage 5 V IC Coll