公开(公告)号：US5088451A

公开(公告)日：1992-02-18

申请号：US506726

申请日：1990-04-09

申请人： Min H. Hu ,  Allen C. Smith, Jr. ,  Robert M. Wilson ,  Robert M. Wepfer ,  Howard E. Braun

发明人： Min H. Hu ,  Allen C. Smith, Jr. ,  Robert M. Wilson ,  Robert M. Wepfer ,  Howard E. Braun

IPC分类号： G21D1/00 ,  F22B1/16 ,  F22B37/48 ,  F22B37/54 ,  F28G9/00 ,  G21F9/28

CPC分类号： F22B37/483

摘要： A system for removing sludge from a sludge-bearing fluid flowing in a vertically oriented nuclear steam generator so that the sludge is not present therein in sufficient quantities to corrode components (e.g., heat transfer tubes) located in the steam generator. The system comprises a tube sheet having a plurality of apertures therethrough for receiving the ends of the heat transfer tubes so that the tubes are supported by the tube sheet. The tube sheet has a top surface thereon and also a recess formed in the top surface for separating and for collecting the sludge from the sludge-bearing fluid. The recess has a substantially frusto-conical wall generally converging at the bottom end of the recess for providing a settling basin for the sludge after the sludge is separated from the sludge-bearing fluid. A pipe extends from adjacent the bottom end of the recess to the exterior of the heat exchanger for transporting the sludge from the recess to the exterior of the heat exchanger. A valve, which is connected to the pipe, is capable of opening to remove the sludge via blowdown through the pipe and into a holding tank for suitable disposal.

摘要翻译： 一种用于从在垂直取向的核蒸汽发生器中流动的含污泥的流体中除去污泥的系统，使得污泥中不存在足以腐蚀位于蒸汽发生器中的组分（例如传热管）的污泥。 该系统包括具有多个通孔的管板，用于接收传热管的端部，使得管由管板支撑。 管板具有顶表面，并且还具有形成在顶表面中的凹部，用于分离和收集来自含污泥的流体的污泥。 凹槽具有基本上截头圆锥形的壁，其通常在凹部的底端处会聚，用于在污泥与含污泥的流体分离之后为污泥提供沉淀池。 管从邻近凹部的底端延伸到热交换器的外部，用于将污泥从凹槽输送到热交换器的外部。 连接到管道上的阀能够打开以通过排放通过管道排出污泥并进入容器以便适当处理。