Heat Exchanger Having Improved Drain System
    1.
    发明申请
    Heat Exchanger Having Improved Drain System 审中-公开
    改进排水系统的换热器

    公开(公告)号:US20130048245A1

    公开(公告)日:2013-02-28

    申请号:US13697070

    申请日:2011-05-13

    IPC分类号: F28F9/00

    摘要: A heat recovery steam generator (HRSG) (A) has a casing (2) and several heat exchangers in the casing. Some of those heat exchangers (12,16) take the form of coils (18) having multiple lower headers (36) into which the lower ends of tubes (18) open. The tubes (18) and headers (36) hold or may hold water and need to be drained from time to time. To this end, the heat ex changer (12,16) has a drain system (20) provided with drain pipes (40) that are connected to the lower headers (36) and contain check valves (48) that permit the water to flow away from the headers (36), but not into them. The drain pipes (40) lead to and open into a drain manifold (46). The drain pipes (40), check valves (48) and drain manifold (46) are assembled in a shop along with the coil (18) and, when the HRSG (A) is assembled in the field, lie within the interior of the casing (2). The drain system (20) also includes a single common drain line (52) that extends downwardly from the drain manifold (46) and through the floor (8) of the casing (2), beyond which it is provided with a drain valve (56) that, when opened, allows water to drain from the coil (18).

    摘要翻译: 热回收蒸汽发生器(HRSG)(A)在壳体中具有壳体(2)和多个热交换器。 这些热交换器(12,16)中的一些采用具有多个下集管(36)的管线(18)的形式,管(18)的下端打开。 管(18)和集管(36)保持或可以保持水,并且需要不时地排出。 为此,换热器(12,16)具有排水系统(20),排水管(40)设有排放管(40),排水管(40)连接到下集管(36),并包含允许水流动的止回阀(48) 远离标题(36),但不在其中。 排水管(40)导向并​​打开到排水歧管(46)中。 排水管(40),止回阀(48)和排水歧管(46)与线圈(18)一起组装在车间中,并且当HRSG(A)在现场组装时,位于车内 套管(2)。 排水系统(20)还包括从排水歧管(46)向下延伸并穿过壳体(2)的底板(8)的单个公共排水管线(52),超过此排水管线设置有排水阀 56),当打开时允许水从线圈(18)排出。