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    • 4. 发明申请
    • DOUBLE EXHAUST CENTRIFUGAL PUMP
    • 双排气离心泵
    • US20120051885A1
    • 2012-03-01
    • US13319390
    • 2010-05-07
    • Francois DanguyEmmanuel EdelineLaurent Fabbri
    • Francois DanguyEmmanuel EdelineLaurent Fabbri
    • F01D3/02
    • F04D29/445F04D29/0416F04D29/2211F04D29/426
    • The invention relates to a centrifugal pump. The pump (10) comprises an impeller (20) and a casing (50) surrounding the impeller, the impeller having a main passage (24) that divides into a first passage (241) and a second passage (242) with a common feed inlet (22) parallel to the axis of rotation (A) of the pump, the common feed inlet (22) being the inlet of the main passage (24), the first passage (241) having a first outlet (243) that is radially oriented, opening out at a first diameter relative to the axis of rotation (A) and suitable for supplying fluid at a first pressure, and the second passage (242) having a second outlet (244) that is oriented radially and situated behind the first outlet (243), opening out at a second diameter that is greater than the first diameter, the second outlet (244) being suitable for supplying the fluid at a second pressure that is higher than the first pressure, the impeller (20) co-operating with the casing (50) to form an axial balancing system having a chamber (90) formed between the rear face (27) of the impeller and the portion (57) of the casing that faces the rear face (27), the inlet to the chamber (90) being situated at the level of the second outlet (244).
    • 本发明涉及离心泵。 所述泵(10)包括叶轮(20)和围绕所述叶轮的壳体(50),所述叶轮具有主通道(24),所述主通道(24)分为第一通道(241)和第二通道(242) 入口(22)平行于泵的旋转轴线(A),公共进料口(22)是主通道(24)的入口,第一通道(241)具有第一出口(243) 径向定向,相对于旋转轴线(A)在第一直径处开口,并且适于在第一压力下供应流体,并且第二通道(242)具有径向定位在第二出口 第一出口(243),其在大于第一直径的第二直径处开口,第二出口(244)适于在高于第一压力的第二压力下供应流体,叶轮(20) 与所述壳体(50)一起操作以形成具有形成在所述后部之间的室(90)的轴向平衡系统 叶轮的表面(27)和壳体的面向后表面(27)的部分(57),腔室(90)的入口位于第二出口(244)的水平处。