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    Cryogenic pump
    1.
    发明公开
    Cryogenic pump 失效
    Kryopumpe

    公开(公告)号：EP0743451A1

    公开(公告)日：1996-11-20

    申请号：EP96303246.1

    申请日：1996-05-09

    申请人： Cryogenic Group, Inc.

    发明人： Brown, Bruce G. ,  Crowl, Robert E. ,  Westerman Phillip J.

    IPC分类号： F04B15/08 ,  F04B19/02

    CPC分类号： F04B15/08 ,  F04B19/022 ,  Y10S417/901

    摘要： A cryogenic pump is disclosed for pumping liquified gas from one container to another container or a point of use. The pump has a main housing (12) defining a cylinder in which a hollow piston (34) is reciprocable by means of a piston rod (42) and divides the interior of the main housing into a supercharger chamber (50) and a sump chamber (52). The lower end of the main housing is closed by a block (24) formed with a fixed piston (54), defining a high pressure chamber (60) in the hollow piston (34), and with inlet ports (76) leading into the sump chamber (52). An outer housing (14) defines a precharge chamber (82) around the main housing (12). During reciprocation of the hollow piston (34), liquid is drawn in through the ports (76) and progressively pumped, though non-return valves, in sequence through the sump chamber (52), the precharge chamber (82), the supercharger chamber (50), and the high pressure chamber (60) to an outlet line (136). The block (24) is located within and adjacent to the bottom of the container. The pump arrangement allows the container to be substantially emptied thereby avoiding waste of the contained liquified gas.

    摘要翻译： 公开了一种用于将液化气体从一个容器泵送到另一个容器或使用点的低温泵。 泵具有限定缸的主壳体（12），其中空心活塞（34）可借助于活塞杆（42）往复运动，并且将主壳体的内部分成增压室（50）和贮槽 （52）。 主壳体的下端由形成有固定活塞（54）的块（24）封闭，在中空活塞（34）中限定高压室（60），并且通过入口（76）进入 贮槽室（52）。 外壳体（14）围绕主壳体（12）限定预充气室（82）。 在中空活塞（34）的往复运动期间，液体通过端口（76）被抽吸，并且依次通过止回阀逐渐泵送通过贮液室（52），预充气室（82），增压器室 （50）和高压室（60）连接到出口管线（136）。 块（24）位于容器的底部内并与容器的底部相邻。 泵装置允许容器基本上倒空，从而避免了所含液化气体的浪费。