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    • 1. 发明公开
    • High pressure pumping apparatus with coupled volumes in a pump working chamber
    • Hochdruckpumpe mit gekoppelten Kammern im Kompressionsraum
    • EP1795749A1
    • 2007-06-13
    • EP06126014.7
    • 2006-12-13
    • Agilent Technologies, Inc.
    • Haertl, Hans-Georg
    • F04B5/02F04B37/12G01N30/00G01N30/02
    • G01N30/32F04B11/0083F04B37/12G01N30/36G01N2030/326
    • A pumping apparatus (10), for delivering liquid at a high pressure at which compressibility of the liquid becomes noticeable, comprises a piston (20) adapted for reciprocation in a pump working chamber (30), wherein a movement of the piston (20) into a first direction (40) decreases a first volume (V1) in the pump working chamber (30) and increases a second volume (V2) in the pump working chamber (30), and a movement of the piston (20) into a second direction (50) opposite to the first direction (40) increases the first volume (V1) and decreases the second volume (V2). A coupling (70, 80, 90, 100) is provided for coupling the first volume (V1) with the second volume (V2) as long as a pressure (Psup) in the first volume (V1) exceeds a pressure in the second volume (V2). An outlet valve (120) is provided for coupling the second volume (V2) with an outlet (110) of the pumping apparatus (10) as long as a pressure in the second volume (V2) exceeds a pressure (Psys) at the outlet (110).
    • 一种用于在液体的压缩性变得显着的高压下输送液体的泵送装置(10)包括适于在泵工作室(30)中往复运动的活塞(20),其中活塞(20)的运动 第一方向(40)减小泵工作室(30)中的第一容积(V1)并增加泵工作室(30)中的第二容积(V2),并且使活塞(20)移动到 与第一方向(40)相反的第二方向(50)增加第一容积(V1)并减小第二容积(V2)。 只要第一容积(V1)中的压力(Psup)超过第二容积(V1)中的压力,则耦合器(70,80,90,100)用于将第一容积(V1)与第二容积(V2) (V2)。 提供出口阀(120),用于将第二容积(V2)与泵送装置(10)的出口(110)联接,只要第二容积(V2)中的压力超过出口处的压力(Psys) (110)。