针对国产 2 0 0 MW汽轮机因汽缸膨胀不畅、低压胀差大 ,延长启动暖机时间等缺陷 ,采取消除滑销系统卡涩、改进推拉结构、对轴承座与基础台板间接触面锈蚀进行处理和改进润滑系统等措施 ,消除了汽缸“无润滑膨胀”及推拉结构不合理等缺陷。改进后中压缸膨胀顺畅无跳跃 ,低压胀差恢复正常值 ,取得了较好效果 In view of the domestic 200MW turbines due to poor cylinder expansion, low pressure differential expansion, extended start-up warm-up time and other defects, to eliminate the slip pin system jam, improve the push-pull structure, bearing seat and the base plate between the contact surface corrosion Handling and improvement of lubrication systems and other measures to eliminate the cylinder “non-lubricating expansion” and the structure of the push-pull unreasonable defects. After the improvement of medium-pressure cylinder expansion smoothly without jumping, low pressure differential expansion back to normal, and achieved good results