300MW汽轮机高中压缸胀差变化原因分析及控制  

Analyses and Control of Expansion Difference in 300 MW High-Medium Pressure Cylinders of Steam Turbines

作　　者：李杰 

机构地区：[1]山西兴能发电有限责任公司,山西古交030200

出　　处：《山西能源与节能》2009年第4期30-31,37,共3页Shanxi Energy and Conservation

摘　　要：分析了300 MW汽轮机组起停过程中,由于转子和气缸产生相对胀差变化引起流通部分动静间隙发生变化的原因。指出,只要在运行调整中对胀差变化及时分析、控制调整参数,就可避免因汽缸变形、动静摩擦、大轴弯曲等问题导致机组损坏的严重事故。In the start-stop processes of 300 MW steam turbines, the expansion differences between the rotors and cylinders cause change of gaps between the rotors and cylinders. Analyses and control of expansion difference while operating can prevent the serious damages caused by cylinder deformation, friction between rotors and cylinders, and macro-axis bending etc.

关 键 词：汽轮机 高中压缸 胀差 热膨胀 

分 类 号：TK263.1[动力工程及工程热物理—动力机械及工程]