本书主要介绍完善化设计后的三缸三排汽20万千瓦汽轮机的主机本体、辅机设备、调节系统、油系统和保护系统等的结构特点和特性数据。完善化设计的内容主要有:调整通流间隙,加大隔板、前汽封、后汽封、轴承箱挡油环的动静轴向间隙,从而增大了机 This book mainly introduces the structural features and characteristic data of the main engine body, auxiliary equipment, regulating system, oil system and protection system of the three-cylinder three-row steam turbine with perfect design. Improve the design of the main contents are: adjust the flow gap, increase the partition, the former steam seal, after the steam seal, bearing oil retaining ring axial clearance, thereby increasing the machine