公开(公告)号：US20240392809A1

公开(公告)日：2024-11-28

申请号：US18321443

申请日：2023-05-22

Applicant: ARAMCO SERVICES COMPANY

Inventor： John David Broyles ,  Jinhong Chen ,  Stacey M. Althaus ,  Jewel Duncan

IPC: F15B1/24 ,  F15B1/033

Abstract: A method for recovering a source gas at a specific pressure uses an adaptive repressurizer system including a series of valves configured to control flow circuit connections within the adaptive repressurizer system. The method includes disposing a gas container containing the source gas within the system. The method includes connecting the gas container; connecting a hydro source; connecting a utility gas source; connecting a vacuum source; and disposing an accumulator within the adaptive repressurizer system. The accumulator is connected to the gas side and to the hydraulic side circuits. The method includes moving the piston by pressurizing the gas-side circuit with the utility gas. The method includes actuating the adaptive repressurizer system to change a first gas pressure of the source gas to a second gas pressure; applying the source gas at the second gas pressure to a laboratory application; and evacuating the gas-side circuit to the vacuum source.

公开(公告)号：US12105538B2

公开(公告)日：2024-10-01

申请号：US17821028

申请日：2022-08-19

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Michael Scott ,  Harvey J. Lunsman ,  David Collins

IPC: F15B1/02 ,  F15B1/027 ,  F15B1/033 ,  F15B1/24 ,  F15B21/00 ,  G05D16/10 ,  H05K7/20 ,  F16L55/052 ,  F16L55/053

CPC classification number: G05D16/109 ,  F15B1/021 ,  F15B1/025 ,  F15B1/027 ,  F15B1/033 ,  F15B1/24 ,  F15B21/006 ,  H05K7/20272 ,  H05K7/20281 ,  F15B2201/31 ,  F15B2201/32 ,  F15B2201/413 ,  F16L55/052 ,  F16L55/053

Abstract: Example implementations relate to a pressure regulator assembly for a closed fluid loop of a CDU. The pressure regulator assembly has a cylinder having an internal volume, and first and second hollow pistons slidably connected to the cylinder to split the internal volume into a first volume portion having cooling fluid, a second volume portion having driver fluid, and a third volume portion having compressible matter. The first volume portion is fluidically connected to the closed fluid loop. The first hollow piston is reciprocated by the compressible matter to maintain operating pressure of the cooling fluid in the closed fluid loop. The second hollow piston is driven by the driver fluid in response to predefined pressure drop of the cooling fluid during predefined time period, to inject additional cooling fluid from the first volume portion into the closed fluid loop to restore pressure level of cooling fluid to operating pressure.

公开(公告)号：US11781573B2

公开(公告)日：2023-10-10

申请号：US17308120

申请日：2021-05-05

Applicant: Parker-Hannifin Corporation

Inventor： Brian B. Slattery

IPC: F15B21/12 ,  F15B1/033 ,  F15B15/20 ,  F15B1/02 ,  F15B21/08 ,  F15B13/04 ,  F15B13/043 ,  E02F9/22

CPC classification number: F15B21/12 ,  F15B1/033 ,  F15B15/202 ,  E02F9/2207 ,  F15B1/021 ,  F15B13/0402 ,  F15B13/0433 ,  F15B21/082 ,  F15B2201/411 ,  F15B2211/30535 ,  F15B2211/3122 ,  F15B2211/3144 ,  F15B2211/329 ,  F15B2211/625 ,  F15B2211/7053 ,  F15B2211/8613

Abstract: An example valve assembly includes a housing having an accumulator fluid passage configured to be fluidly coupled to an accumulator, a supply fluid cavity configured to be fluidly coupled to a source of fluid, a reservoir fluid cavity configured to be fluidly coupled to a reservoir of fluid, a head fluid cavity configured to be fluidly coupled to a head-side chamber of a hydraulic actuator, and a rod fluid cavity configured to be fluidly coupled to a rod-side chamber of the hydraulic actuator; a main spool that is axially-movable within the housing; and a balancing spool that is axially-movable within the housing based on an axial position of the main spool.

公开(公告)号：US11739740B2

公开(公告)日：2023-08-29

申请号：US17296417

申请日：2018-12-31

Applicant: Halliburton Energy Services, Inc.

Inventor： Stanley V. Stephenson ,  Joe A. Beisel

IPC: F04B11/00 ,  F15B1/033 ,  E21B43/12 ,  F04B49/06 ,  F04B47/04 ,  F04B9/10 ,  F04B51/00 ,  F04B47/02 ,  F04B47/00

CPC classification number: F04B11/0008 ,  E21B43/121 ,  E21B43/126 ,  E21B43/129 ,  F04B9/10 ,  F04B47/02 ,  F04B47/04 ,  F04B49/065 ,  F04B51/00 ,  F15B1/033 ,  F04B47/00 ,  F04B2205/01 ,  F15B2201/50 ,  F15B2201/51 ,  F15B2211/8609

Abstract: An active accumulator system which automatically adjusts or adapts the charge pressure or volume of an accumulator to maintain an optimal charge pressure or volume of the accumulator may provide optimal operation of a pump. An active accumulator system may comprise a flow line coupled to a pump, wherein a fluid flows through the flow line to the pump, an accumulator coupled to the flow line, a transducer coupled to the pump, wherein the transducer detects a parameter of the pump at an inlet of the pump, and a controller coupled to the transducer and the accumulator, wherein the controller receives the parameter, and wherein the controller regulates air flow to the accumulator such that the accumulator is adjusted to an optimal charge pressure based at least in part on the parameter.

公开(公告)号：US11668149B2

公开(公告)日：2023-06-06

申请号：US17091842

申请日：2020-11-06

Applicant: Transocean Innovation Labs Ltd.

Inventor： Andrew Leach ,  Matthew Boike ,  Stephen Fairfax

IPC: F15B1/033 ,  E21B33/035 ,  F04B23/06 ,  F04B1/12 ,  F04B11/00 ,  F04B23/02 ,  F04B49/08 ,  F04B49/06 ,  F04B49/20 ,  F04B17/03 ,  E21B33/064 ,  F15B1/04 ,  F15B11/08

CPC classification number: E21B33/0355 ,  E21B33/064 ,  F04B1/12 ,  F04B11/0008 ,  F04B17/03 ,  F04B23/02 ,  F04B23/06 ,  F04B49/06 ,  F04B49/065 ,  F04B49/08 ,  F04B49/20 ,  F15B1/033 ,  F15B1/04 ,  F15B11/08 ,  F15B2201/411 ,  F15B2201/51 ,  F15B2211/205 ,  F15B2211/20576 ,  F15B2211/212 ,  F15B2211/30505 ,  F15B2211/632 ,  F15B2211/6306

Abstract: Some of the present systems include a hydraulic power storage system having an accumulator configured to supply pressurized hydraulic fluid to a hydraulically actuated device to actuate the hydraulically actuated device and a drain in fluid communication with the accumulator and including a valve that is actuatable to drain hydraulic fluid from the hydraulic power storage system such that an internal pressure of the accumulator is reduced and a flow restrictor configured to reduce a flow rate of hydraulic fluid through the valve, a hydraulic pump configured to pressurize the accumulator, a pressure sensor configured to capture data indicative of the internal pressure of the accumulator, and a processor configured to actuate the hydraulic pump to increase the internal pressure of the accumulator if the internal pressure of the accumulator, as indicated in data captured by the pressure sensor, falls below a threshold pressure.

公开(公告)号：US11644050B2

公开(公告)日：2023-05-09

申请号：US17883868

申请日：2022-08-09

Applicant: Parker-Hannifin Corporation

Inventor： Brian Slattery

IPC: F15B13/08 ,  F15B13/04 ,  F15B1/033 ,  F16K31/42

CPC classification number: F15B13/0814 ,  F15B1/033 ,  F15B13/0417 ,  F15B13/0817 ,  F15B13/0871 ,  F16K31/42 ,  F15B2211/20546 ,  F15B2211/3052 ,  F15B2211/7128

Abstract: An example valve assembly includes a first workport fluidly coupled to a first actuator; a second workport fluidly coupled to the first actuator; a third workport fluidly coupled to a second actuator, wherein the third workport is fluidly coupled to the first workport via a first fluid passage; a fourth workport fluidly coupled to the second actuator, wherein the fourth workport is fluidly coupled to the second workport via a second fluid passage; and a spool axially movable in a bore within the valve assembly, wherein when the spool is shifted axially in a first axial direction, pressurized fluid is provided to the first workport and to the third workport via the first fluid passage, and when the spool is shifted axially in a second axial direction opposite the first axial direction, pressurized fluid is provided to the second workport and to the fourth workport via the second fluid passage.

公开(公告)号：US11506228B2

公开(公告)日：2022-11-22

申请号：US16580674

申请日：2019-09-24

Applicant: Capstan Ag Systems, Inc.

Inventor： Kale Schrader ,  Duane Needham

IPC: F15B13/044 ,  F16K31/06 ,  F15B1/033 ,  F15B15/18 ,  H01F7/18 ,  A01C7/06

Abstract: A drive circuit for operating a solenoid includes a main switch and a charge pump circuit. The main switch is coupled in series with a coil of the solenoid. The main switch is configured to selectively enable current flow from a voltage source according to a main switching signal to translate a poppet of the solenoid between an opened position and a closed position. The charge pump circuit is coupled to the voltage source. The charge pump circuit is configured to discharge through the coil to translate the poppet from the closed position to the opened position, and to charge when the poppet is held in the opened position.

公开(公告)号：US11313387B2

公开(公告)日：2022-04-26

申请号：US17267554

申请日：2019-07-30

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Peter Bruck ,  Christian Stauch

IPC: F15B1/027 ,  F15B1/033 ,  F15B21/14

Abstract: A system for charging and discharging at least one hydraulic accumulator (10) can be connected to a valve control device (12). The valve control device (12) has at least one logic valve (14). A shuttle valve (16) and a hydraulically operated switching valve (18) are also provided. The valves (14, 16, 18) are interconnected such that the hydraulically actuatable switching valve (18) compares the accumulator pressure (pA) to a minimum accumulator pressure (pA0) that can be adjusted via the control pressure setting of this switching valve (18).

公开(公告)号：US11266071B1

公开(公告)日：2022-03-08

申请号：US17004760

申请日：2020-08-27

Applicant: H & S Manufacturing Co., Inc.

Inventor： Michael J. Krahling

IPC: F15B11/16 ,  A01D78/00 ,  A01D78/14 ,  F15B1/02 ,  F15B1/033

Abstract: Windrow mergers employ one or more design features as described herein in connection with a suspension assembly that allows the pickup head to rise or fall relative to a frame of the merger. One feature maintains a substantially constant force or pressure between a pickup head of the merger and the terrain regardless of a height of the head. Another feature maintains a substantially constant hydraulic pressure in a hydraulic actuator that connects the pickup head to a frame assembly of the merger. Still another feature employs a hydraulic pump driven by a power takeoff (PTO) of the tractor to charge and discharge a hydraulic actuator arranged to raise and lower the pickup head of the merger between an upper limit and a lower limit.

公开(公告)号：US20210363729A1

公开(公告)日：2021-11-25

申请号：US17045977

申请日：2018-04-27

Applicant: VOLVO CONSTRUCTION EQUIPMENT AB

Inventor： Valentin PAUSE

IPC: E02F9/22 ,  E02F9/20 ,  F15B1/033

Abstract: The invention relates to a hydraulic system for a work machine. The system comprising: a main hydraulic machine connected to an output shaft of an engine of the work machine for providing power to working hydraulics of the work machine; a main pressure line connecting the main hydraulic machine to the working hydraulics; a support hydraulic machine connected to the output shaft; a hydraulic accumulator; a discharge valve connected between the accumulator and an input side of the support hydraulic machine; a charge valve connected between an output side of the support hydraulic machine and the hydraulic accumulator to selectively allow a flow from the support hydraulic machine to the hydraulic accumulator; a flow support valve connected between the output side of the support hydraulic machine and the main pressure line to selectively allow a flow from the support hydraulic machine to the main pressure line; and a hydraulic tank connected to the input side of the support hydraulic machine.