燃气联合循环发电机组介绍及其凝汽器设计

Introduction to GTCC Unit and its Condenser Design

介绍了燃气联合循环发电机组申凝汽器的结构特点,该凝汽器的后水室侧布置有补偿节,以补偿凝汽器壳体与冷却管纵向热膨胀的差值,后水室下部安装有辅助支撑架。凝汽器壳体上部配置有补水喷淋装置、再循环喷淋装置、高低压减温减压装置等。并对凝汽器接颈设计中扩散角角度、接颈中设置水幕保护等问题进行了探讨。

The structural features of the condenser in GTCC unit have been described in the article. A compensator is installed at the side of rear water chamber of the condenser so as to compensate the differential value of longitudinal heat expansion between the shell and cooling tubes of the condenser. There is an auxiliary support fixed at the lower part of the rear water chamber. There are make-up water spray device, recirculating spray device and HP ; LP desuperheater pressure reducing station, etc. installed at the upper part of condenser shell. Some problems such as the degree of divergence angle in neck design and a water curtain protection in the neck are all discussed.