SYSTEM AND METHOD FOR DRUM LEVEL CONTROL IN A DRUM OF A HEAT RECOVERY STEAM GENERATOR
    2.
    发明申请
    SYSTEM AND METHOD FOR DRUM LEVEL CONTROL IN A DRUM OF A HEAT RECOVERY STEAM GENERATOR 审中-公开
    热回收蒸汽发生器的鼓中的液位控制系统和方法

    公开(公告)号:US20150090202A1

    公开(公告)日:2015-04-02

    申请号:US14044771

    申请日:2013-10-02

    Abstract: A system includes the HRSG having an economizer disposed along a fluid flow path, and a drum disposed along the fluid flow path downstream of the economizer. The HRSG also includes a drum level control module configured to modulate an amount of the fluid provided to the drum along the fluid flow path and a supplemental control module configured to control an amount of the fluid in a different manner than the drum level control module. The heat recovery steam generator also includes a drum level event controller configured to monitor a rate of change of a level of the fluid in the drum. If the rate of change is over a threshold value, a signal goes to the supplemental control. If the rate of change is less than or equal to the threshold value, the signal goes to the drum level control module.

    Abstract translation: 一种系统包括具有沿着流体流动路径设置的节能器的HRSG和沿节流器下游的流体流动路径设置的鼓。 HRSG还包括鼓级控制模块,其被配置成调制沿着流体流动路径提供给滚筒的流体的量;以及补充控制模块,该辅助控制模块被配置为以与鼓级控制模块不同的方式控制流体的量。 热回收蒸汽发生器还包括鼓级事件控制器,其被配置为监测滚筒中流体水平的变化率。 如果变化率超过阈值,则信号进入补充控制。 如果变化率小于或等于阈值,则信号进入鼓级控制模块。

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