会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 91. 发明公开
    • A hydraulic steering control arrangement
    • Hydrauliklenkung-Regelungsanordnung
    • EP2757024A1
    • 2014-07-23
    • EP13000214.0
    • 2013-01-16
    • Danfoss Power Solutions Aps
    • Porskrog, BendtPetersen, Morten HoeckSevelsted, Nils E.
    • B62D5/093
    • F04B7/02B62D5/093B62D5/32Y10T137/86002Y10T137/87193
    • A hydraulic steering control arrangement (1) is described having a directional valve (2), a metering pump unit which has at least two metering pumps (3, 4) which are connected hydraulically in parallel and are operable mechanically in parallel, and a shut-off valve (6) in hydraulic connection between two of the at least two metering pumps (3, 4), a pump connection (P) and a tank connection (T) which are connected to said metering pump unit by way of the directional valve (2), and two working connections (L, R) connected to the directional valve (2), a control input (8) of the shut-off valve (6) being connected to the pump connection (P) by means of a control valve.
      Such a control arrangement should be operated at a high hydraulic pressure and at the same time it should be made sure that the shut-off valve is actuated only when the required high pressure is available.
      To this end the control valve (10) is a pilot operated valve, an inlet (11) of said control valve (10) being connected to the pump connection (P), said control valve (10) connecting said input (8) and said pump connection (P) in an actuated state of said control valve (10).
    • 描述了具有方向阀(2)的液压转向控制装置(1),具有至少两个计量泵(3,4)的计量泵单元,所述至少两个计量泵(3,4)平行地并联连接并机械并联连接 在至少两个计量泵(3,4)中的两个之间的液压连接中的阀(6),泵连接(P)和罐连接(T),其通过定向连接到所述计量泵单元 阀(2)和连接到方向阀(2)的两个工作连接(L,R),截止阀(6)的控制输入(8)通过以下方式连接到泵连接 一个控制阀。 这种控制装置应当在高液压下操作,并且同时应当确保截止阀仅在所需高压可用时被致动。 为此,控制阀(10)是先导操作阀,所述控制阀(10)的入口(11)连接到泵连接(P),所述控制阀(10)将所述输入(8)和 所述泵连接(P)处于所述控制阀(10)的致动状态。
    • 92. 发明公开
    • RECIRCULATING, CONSTANT BACKPRESSURE CORE FLOODING APPARATUS AND METHOD
    • REZIRKULIERENDEKERNÜBERFLUTUNGSVORRICHTUNGMIT KONSTANTEM GEGENDRUCK UND VERFAHREN
    • EP2652070A1
    • 2013-10-23
    • EP11848490.6
    • 2011-12-13
    • University of Wyoming
    • PIRI, Mohammad
    • C09K8/58
    • C09K8/58G01N15/082Y10T137/0396Y10T137/86002
    • An apparatus and method for simulating production conditions in hydrocarbon-bearing reservoirs, as an example, by flooding of core samples from such reservoirs, are described. Full recirculation flow measurements permit several fluids (for example, crude oil, brine, and gas) to be simultaneously injected into core samples having varying dimensions. Accurate and stable back pressures are maintained at total flow rates of as high as 200cc/min., for a large range of fluid viscosities. Accurate and stable net overburden pressures relative to pore pressure are also maintained, thereby simulating the formations at depth. Core samples from formations may also be investigated using the apparatus and method hereof, for carbon dioxide sequestration potential, as another example.
    • 作为示例,通过从这种储存器浸渍芯样品,描述了用于模拟含烃储层中的生产条件的装置和方法。 完全循环流量测量允许将几种流体(例如,原油,盐水和气体)同时注入到具有不同尺寸的核心样品中。 对于大范围的流体粘度,精确和稳定的背压保持在高达200cc / min的总流速。 还保持相对于孔隙压力的精确和稳定的净覆盖压力,从而模拟深度处的形成。 作为另一个例子,也可以使用本发明的装置和方法来研究来自地层的核心样品,用于二氧化碳封存潜力。
    • 95. 发明公开
    • HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINERY
    • HYDRAULISCHES系统FÜREINE BAUMASCHINE
    • EP2514880A4
    • 2017-06-21
    • EP10837778
    • 2010-11-03
    • DOOSAN INFRACORE CO LTD
    • KIM JEUNG HWA
    • E02F9/22B62D5/065B62D5/07E02F9/20F15B1/027F15B11/16G05D16/08
    • E02F9/2242B62D5/065B62D5/07E02F9/207E02F9/2087E02F9/225F15B11/162F15B2211/20515F15B2211/20523F15B2211/20576F15B2211/2658F15B2211/6309F15B2211/6313Y10T137/86002
    • The present invention relates to a hydraulic system for construction machinery, which is applied to construction machinery provided with a steering unit (20) for controlling steering of equipment, and a main control valve (30) for controlling operating of a work tool, and includes: a main pump (10) for discharging working fluid supplied to the steering unit (20) and the main control valve (30); a load sensing pressure sensor (60) for sensing a load sensing pressure of the steering unit (20); a priority valve (22) installed in a supply passage for the working fluid discharged from the main pump (10), for dividing and supplying the working fluid discharged from the main pump (10) to the steering unit (20) and the main control valve (30), to correspond to the load sensing pressure; an auxiliary pump (40) for supplementing working fluid to the supply passage supplying the working fluid divided by the priority valve (22) to the steering unit (20); an electric motor (50) for operating the auxiliary pump (40); and a controller (80) for operating the electric motor (50) when the load sensing pressure is greater than a reference load sensing pressure, and additionally supplying working fluid discharged from the auxiliary pump (40) to the steering unit (20).
    • 本发明涉及一种用于工程机械的液压系统,该液压系统应用于具有用于控制设备的转向的转向单元(20)和用于控制作业工具的操作的主控制阀(30)的工程机械,并且包括: :主泵(10),用于排出供给到转向单元(20)和主控制阀(30)的工作流体; 负载传感压力传感器(60),用于感测所述转向单元(20)的负载传感压力; 优先阀(22),其安装在从主泵(10)排出的工作流体的供给通道中,用于将从主泵(10)排出的工作流体分流并供给到转向单元(20);主控制器 阀(30),以对应于所述负载感测压力; 辅助泵(40),其用于将工作流体补充到将由优先阀(22)划分的工作流体供应到转向单元(20)的供应通道; 用于操作辅助泵(40)的电动机(50); 和控制器(80),用于当负载传感压力大于参考负载传感压力时操作电动机(50),并且另外将从辅助泵(40)排出的工作流体供应到转向单元(20)。