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公开(公告)号：US20140161627A1
公开(公告)日：2014-06-12
申请号：US13711966
申请日：2012-12-12
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Shyam Sivaramakrishnan , Todd Alan Anderson , Matthew David d'Artenay , Dean David Marschke
CPC classification number: F04B23/06 , B01D61/02 , F04B1/128 , F04B9/113 , F04B9/1172 , F04B9/1178 , F04B11/0058 , F04B17/03 , F04B49/002 , F04B49/22
Abstract: A method includes driving a fluid pumping unit having a plurality of pumping cylinders via a plurality of hydraulic cylinders respectively of a hydraulic power unit. The method further includes controlling activation of the hydraulic power unit such that each stroke of the corresponding piston assembly between the top dead center and the bottom dead center follows a corresponding trapezoidal velocity profile with respect to a time duration. Controlling activation includes controlling flow of a hydraulic fluid in the hydraulic power unit so as to control the corresponding trapezoidal velocity profile with respect to the time duration of the corresponding piston assembly to obtain a predefined flow rate of the fluid medium from the pumping unit.
Abstract translation: 一种方法包括经由液压动力单元的多个液压缸来驱动具有多个泵送缸的流体泵送单元。 该方法还包括控制液压动力单元的启动，使得在上止点和下死点之间的相应活塞组件的每个冲程相对于持续时间都遵循相应的梯形速度分布。 控制激活包括控制液压动力单元中的液压流体的流动，以便相对于相应的活塞组件的持续时间控制相应的梯形速度分布，以获得来自泵送单元的流体介质的预定流量。
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公开(公告)号：US09897080B2
公开(公告)日：2018-02-20
申请号：US13693743
申请日：2012-12-04
Applicant: General Electric Company
Inventor： Dean David Marschke
CPC classification number: F04B7/0046 , C02F1/441 , F04B7/0007 , F04B9/113 , Y10T137/0318 , Y10T137/85986
Abstract: A liquid pumping system includes at least two water cylinders that are each controlled by a hydraulic piston. A rotary valve controls the hydraulic pistons. The rotary valve has an inner unit that rotates within an outer unit. Slots provided between the inner and outer units control the duration, rate and direction of hydraulic fluid supply to the hydraulic piston. A liquid pumping process comprises distributing an initial flow of pressurized hydraulic fluid between the hydraulic cylinders. The hydraulic cylinders move through a cycle in a phased relationship to provide a constant sum of flow rates from the liquid pumps. In a water treating process, feed water is pumped through the membrane unit. Brine from the membrane unit is returned to each liquid pump while that liquid pump is feeding water to the membrane unit.
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公开(公告)号：US09476415B2
公开(公告)日：2016-10-25
申请号：US13711966
申请日：2012-12-12
Applicant: General Electric Company
Inventor： Shyam Sivaramakrishnan , Todd Alan Anderson , Matthew David d'Artenay , Dean David Marschke
CPC classification number: F04B23/06 , B01D61/02 , F04B1/128 , F04B9/113 , F04B9/1172 , F04B9/1178 , F04B11/0058 , F04B17/03 , F04B49/002 , F04B49/22
Abstract: A method includes driving a fluid pumping unit having a plurality of pumping cylinders via a plurality of hydraulic cylinders respectively of a hydraulic power unit. The method further includes controlling activation of the hydraulic power unit such that each stroke of the corresponding piston assembly between the top dead center and the bottom dead center follows a corresponding trapezoidal velocity profile with respect to a time duration. Controlling activation includes controlling flow of a hydraulic fluid in the hydraulic power unit so as to control the corresponding trapezoidal velocity profile with respect to the time duration of the corresponding piston assembly to obtain a predefined flow rate of the fluid medium from the pumping unit.
Abstract translation: 一种方法包括经由液压动力单元的多个液压缸来驱动具有多个泵送缸的流体泵送单元。 该方法还包括控制液压动力单元的启动，使得在上止点和下死点之间的相应活塞组件的每个冲程相对于持续时间都遵循相应的梯形速度分布。 控制激活包括控制液压动力单元中的液压流体的流动，以便相对于相应的活塞组件的持续时间控制相应的梯形速度分布，以获得来自泵送单元的流体介质的预定流量。
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