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    A METHOD AND APPARATUS FOR TESTING THE PISTON OF AN INJECTION PUMP
    92.
    发明公开
    A METHOD AND APPARATUS FOR TESTING THE PISTON OF AN INJECTION PUMP 有权
    方法和设备喷油泵试验活塞

    公开(公告)号：EP2227637A1

    公开(公告)日：2010-09-15

    申请号：EP08868142.4

    申请日：2008-12-12

    Applicant: Wärtsilä Finland Oy

    Inventor： KOIVUNEN, Matti

    IPC: F04B51/00

    CPC classification number: F02M65/00 ,  F02M59/26 ,  F04B7/06 ,  F04B51/00 ,  F04B2201/0208 ,  G01M3/025

    Abstract: A method and an apparatus for testing the piston (2) of an injection pump of a pressure medium, the piston comprising a longitudinal groove (2b) that begins from its frontal face (2a) and extends on its side, and a screw-shaped guide edge (2c) that abuts on the envelope surface of the piston. According to the invention, the piston (2) is inserted, with its frontal face (2a) first, into a testing cylinder (1), wherein the clearance between the piston (2) and the testing cylinder (2) is tight and wherein a specific testing pressure is exerted on the envelope surface of the piston, in a limited area, from the vicinity of the said guide edge (2c) to a selected measurement point. The piston (2) is moved in the testing cylinder (1), so that the said measurement point moves, following the guide edge (2c). Changes in the testing pressure are monitored to observe any failures in the piston (2) and the said guide edge (2c).

    Methods and apparatus for determining the presence or absence of a fluid leak
    93.
    发明公开
    Methods and apparatus for determining the presence or absence of a fluid leak 有权
    用于确定液体的泄漏的存在或不存在的方法和装置

    公开(公告)号：EP1843141A2

    公开(公告)日：2007-10-10

    申请号：EP07013891.2

    申请日：2002-03-01

    Applicant: Waters Investments Limited

    Inventor： Luongo, Joseph A. ,  Ciavarini, Steven J. ,  Tacconi, Robert Q. ,  Rubino, Frank A. ,  Dumas, Robert J.

    IPC: G01M3/26 ,  G01M3/20 ,  G01M3/00 ,  F04B51/00 ,  G08B21/00 ,  F04B1/04 ,  F04B43/00 ,  F04B49/06

    CPC classification number: F04B51/00 ,  F04B2201/0208 ,  F04B2205/05 ,  G01M3/26 ,  G01N30/32 ,  G01N2030/326

    Abstract: A pumping apparatus for pumping fluid comprises at least two pump chambers, two inlet valves and two outlet valves. The pump chambers comprise a first pump chamber and a second pump chamber, said first pump chamber and second pump chamber in parallel with said first pump chamber receiving fluid from a fluid supply via a first inlet valve and said second pump chamber receiving fluid from a fluid supply via a second inlet valve. The first pump chamber discharges said fluid via a first outlet check valve and said second pump chamber discharges said fluid via a second outlet check valve. The apparatus comprises further at least one motor for powering said pistons in said pump chambers, said motor operating in pumping mode upon receiving a pumping signal, and at least one inlet valve in fluid communication with said inlet of said pump chambers, said inlet valve having an open position and a closed position. The apparatus comprises further at least one switchable valve in fluid communication with said outlet of said pump chambers, at least one first pressure measuring device and control means for detecting leaks or defects.

    Abstract translation: 用于泵送流体泵送装置包括至少两个泵送腔室，两个入口阀和两个出口的阀。 所述泵送腔室包括第一泵腔室和第二泵送室中，所述第一泵室和与所述第一泵室经由第一入口阀从流体供给接收流体并平行的第二泵送室所述第二泵室从流体接收流体 经由第二入口阀供应。 第一泵室排出，其中通过第一出口止回阀流体和所述第二泵室排出所述经由第二出口止回阀流体。 所述设备包括另外的至少一个电机，用于在所述泵送腔室所述活塞供电，所述电机在一旦接收到泵浦信号泵送模式下工作，并且在与所述泵送腔室的所述入口流体连通的至少一个入口阀，所述具有入口阀 在打开位置和关闭位置。 该装置包括与的所述泵浦腔室的所述出口流体连通并且至少一个可切换阀，至少一个第一压力测量装置和控制装置，用于检测泄漏或缺陷。

    Method for real time compensation of fluid compressibility in high pressure reciprocating pumps
    96.
    发明公开
    Method for real time compensation of fluid compressibility in high pressure reciprocating pumps 失效
    在Hochdruckkolbenpumpen的Verfahren zur Echtzeit-Kompensation derKompressibilitätvonFlüssigkeiten。

    公开(公告)号：EP0471930A1

    公开(公告)日：1992-02-26

    申请号：EP91109005.8

    申请日：1991-06-02

    Applicant: Hewlett-Packard Company

    Inventor： Abdel-Rahman, Mahmoud F.

    IPC: F04B11/00

    CPC classification number: F04B11/0075 ,  F04B49/065 ,  F04B2201/0208 ,  F04B2201/0605 ,  F04B2205/03 ,  F04B2205/05 ,  F04B2205/09 ,  F04B2205/11 ,  G01N30/02 ,  G01N2030/324 ,  G01N2030/326 ,  G01N2030/8804 ,  B01D15/40

    Abstract: The invention is a method and apparatus for significantly improving the performance of a reciprocating pump by delivering the pumping fluid at a desired pressure and flow rate with minimal flow fluctuations. The compressibility of the pumping fluid directly effects volumetric flow rate and mass flow rate. The method includes the step of sensing various pump parameters related to said compressibility and adjusting the pumping speed to make appropriate accommodations. In particular, the compressibility of the pumping fluid is effected by the adiabatic heating of the pumping fluid during compression, variations in pumping fluid density, leaks in the check valves of cylinder/piston seals and the primary and secondary switching losses in the fluid flow occurring when the primary and secondary pistons reverse direction.

    Abstract translation: 本发明是一种用于通过以最小的流动波动以期望的压力和流速输送泵送流体来显着改善往复泵的性能的方法和装置。 泵送流体的压缩性直接影响体积流量和质量流量。 该方法包括检测与所述可压缩性相关的各种泵参数并调节泵送速度以适当调节的步骤。 特别地，泵送流体的压缩性通过在压缩期间泵送流体的绝热加热，泵送流体密度的变化，气缸/活塞密封件的止回阀中的泄漏以及流体流动中的主要和次要的切换损失来实现 当主活塞和次级活塞反向时。

    Reciprocating oil pump
    97.
    发明公开
    Reciprocating oil pump 失效
    往复式油泵

    公开(公告)号：EP0398209A1

    公开(公告)日：1990-11-22

    申请号：EP90109015.9

    申请日：1990-05-14

    Applicant: ALCATEL STK A/S

    Inventor： Ege, Sigmund

    IPC: F04B49/06 ,  F04B9/08

    CPC classification number: F04B53/164 ,  F04B9/133 ,  F04B49/10 ,  F04B2201/0208

    Abstract: The invention relates to an improved reciprocating pump providing oil for low pressure, self-contained oil-filled cables. It is particularly important to have a gas tight system in such a pumping plant since the oil in the storage tank (6) has to be kept under vacuum at all times to keep the oil in a gas-free condition. The air or gas driven oil pump (8) has two piston rod seals (9,10). The area between the two seals is provided with an inlet (11) and outlet opening (12) through which oil can be flushed from the high pressure side of the pump (8) to the top of a storage tank (6).

    Abstract translation: 本发明涉及一种改进的往复泵，为低压自给式充油电缆提供油。 在这样的抽水设备中设置气密系统尤为重要，因为储罐（6）中的油必须始终保持真空以保持油处于无气状态。 空气或气体驱动的油泵（8）具有两个活塞杆密封件（9,10）。 两个密封件之间的区域设有入口（11）和出口开口（12），油可以通过该入口从泵（8）的高压侧被冲洗到储罐（6）的顶部。

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