公开(公告)号：US12085181B2

公开(公告)日：2024-09-10

申请号：US18202882

申请日：2023-05-26

申请人： PREVCO Subsea LLC

发明人： Don Christensen ,  John Head

IPC分类号： F16K17/04 ,  F16K15/06 ,  F16K17/06 ,  F16K17/10

CPC分类号： F16K17/044 ,  F16K15/066 ,  F16K17/06 ,  F16K17/10 ,  Y10T137/7743 ,  Y10T137/7838 ,  Y10T137/7846

摘要： A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.

公开(公告)号：US20240110633A1

公开(公告)日：2024-04-04

申请号：US18458366

申请日：2023-08-30

申请人： Robert Bosch GmbH

发明人： Hakan Camurdan ,  Karthikeyan Maharajan

IPC分类号： F16K17/06 ,  F15B13/02 ,  F15B13/04 ,  F16K17/10

CPC分类号： F16K17/06 ,  F15B13/024 ,  F15B13/0401 ,  F16K17/105 ,  F16K2200/501

摘要： A pressure relief valve assembly includes a pressure relief valve having a valve bushing received in a valve bore of a housing bore, and a valve body biased against a valve seat by a spring guided in the valve bushing. The valve body includes first and second control surfaces subjected in an opening direction, respectively, to a pressure to be limited and to a control pressure. A fixing device disposed on the valve bushing axially supports the valve bushing in the housing bore. The valve bushing has a radially protruding sealing collar which sits against a peripheral wall of the housing bore and seals an annular chamber carrying the pressure to be limited against an annular control chamber carrying the control pressure. Both the chamber and the control chamber are radially delimited on one side by the housing bore and on the other side by the valve body.

公开(公告)号：US11946438B2

公开(公告)日：2024-04-02

申请号：US17206723

申请日：2021-03-19

申请人： Eaton Intelligent Power Limited

发明人： Harshad Pawale ,  Pradeep Biradar ,  Abhijit Borawake

IPC分类号： F16K17/04 ,  B64D37/32 ,  F02M37/00 ,  F16K17/10 ,  F16K17/196 ,  F16K17/30 ,  F16K31/126 ,  F16K41/10

CPC分类号： F02M37/0029 ,  B64D37/32 ,  F16K17/048 ,  F16K17/10 ,  F16K17/196 ,  F16K17/30 ,  F16K31/1262 ,  F16K41/10

摘要： A pilot valve assembly, for operating a pressure reducing valve disposed within a fuel tank, can include a housing including a first chamber and a second chamber, a first port in fluid communication with the first and second chambers, the first port being configured to receive an atmospheric pressure, a second port in fluid communication with the first and second chambers, the second port being configured to receive a fuel tank pressure, a first pilot valve arranged within the first chamber and configured to open only when a predetermined positive pressure differential exists between the first and second ports, and a second pilot valve arranged within the second chamber and configured to open only when a predetermined negative pressure differential exists between the first and second ports.

公开(公告)号：US20240068586A1

公开(公告)日：2024-02-29

申请号：US17900456

申请日：2022-08-31

申请人： Dresser, LLC

发明人： Rajesh Krithivasan ,  Richard John Klimas, JR. ,  Jason Glen Knudson

IPC分类号： F16K17/10 ,  F16K27/12

CPC分类号： F16K17/10 ,  F16K27/12

摘要： An evacuation unit is configured to remove entrapped fluid from a flow control. These configurations may incorporate devices that can passively discharge fluid in response to loss of system pressure. These devices may use gravity or spring-assist as mechanisms to move fluid out of spaces in the device. This feature mitigates risks that the entrapped fluid freezes and expands, which can cause damage to metal components and lead to extensive downtime of process lines. As an added benefit, the features can reduce product costs or complexity because the proposed designs avoid the need for additional, peripheral “accessories,” like pumps or heating elements, resident at the location of the flow control.

公开(公告)号：US11773876B2

公开(公告)日：2023-10-03

申请号：US17586152

申请日：2022-01-27

申请人： Schwäbische Hüttenwerke Automotive GmbH

发明人： Stefan Küchle ,  Thomas Tontsch ,  Simone Schilling

IPC分类号： F16K27/04 ,  F15B13/042 ,  F04B49/00 ,  F04B49/08 ,  F04B49/24 ,  F04C14/24 ,  F16K11/07 ,  F16K17/10 ,  F16K31/122

CPC分类号： F15B13/042 ,  F04B49/002 ,  F04B49/08 ,  F04B49/24 ,  F04C14/24 ,  F16K11/0716 ,  F16K17/105 ,  F16K27/041 ,  F16K31/1221

摘要： A control valve for a pump for delivering a fluid. The control valve includes: a valve housing which delineates a piston chamber; a piston which can be moved within the piston chamber; and a fluid channel which ports into the piston chamber via a port opening, wherein the port opening defines a port control edge. The valve housing includes a recess which extends into the fluid channel, wherein the recess defines a recess control edge which is axially offset with respect to the port control edge, and/or the piston includes a piston recess which defines a piston recess control edge.

公开(公告)号：US11733722B2

公开(公告)日：2023-08-22

申请号：US17481828

申请日：2021-09-22

申请人： EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC.

发明人： Justin L. Masias

IPC分类号： G05D16/16 ,  F16K17/10 ,  G05D16/00 ,  F16K1/52 ,  F16K31/126 ,  F16K17/02

CPC分类号： G05D16/163 ,  F16K17/10 ,  G05D16/024 ,  G05D16/16 ,  F16K1/523 ,  F16K1/526 ,  F16K17/02 ,  F16K31/126 ,  Y10T137/7795 ,  Y10T137/7796

摘要： A control system having a first pressure regulator, a downstream fluid control device, first pilot, and second pilot. The first pressure regulator has a fluid inlet, fluid outlet, and actuator assembly with a cavity divided into a first chamber and a second chamber. The downstream fluid control device has a second fluid inlet and a second fluid outlet. The first pilot has a first setpoint and the second pilot has a second setpoint, less than the first setpoint. The first and second pilots fluidly couple the second chamber to the second fluid outlet in a first mode of operation, isolate the second chamber from the second fluid outlet in a second mode of operation, and fluidly couple the second chamber to the fluid inlet in a third mode of operation.

公开(公告)号：US11603941B2

公开(公告)日：2023-03-14

申请号：US17593332

申请日：2020-04-07

申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA

发明人： Hiroaki Fujiwara ,  Masahiro Matsuo

IPC分类号： F16K17/10 ,  F16K27/02 ,  F16K31/122 ,  F16K47/02 ,  F16K17/06

摘要： A relief valve includes: a housing; a plunger movable to each of a closed position and an open position; a differential pressure chamber; a spring member; a piston; and a damping chamber. The plunger includes a first damping passage penetrating the plunger and bringing an area outside the plunger and a through passage into communication. The piston includes a second damping passage penetrating the piston and bringing an area inside the piston and the damping chamber into communication. A communication space connected to each of the first damping passage and the second damping passage is formed between the plunger and the piston.

公开(公告)号：US11473685B2

公开(公告)日：2022-10-18

申请号：US16744133

申请日：2020-01-15

申请人： PREVCO Subsea LLC

发明人： Don Christensen ,  John Head

IPC分类号： F16K17/04 ,  F16K17/06 ,  F16K17/10 ,  F16K15/06

摘要： A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.

公开(公告)号：US20220178418A1

公开(公告)日：2022-06-09

申请号：US17544465

申请日：2021-12-07

申请人： thyssenkrupp Bilstein GmbH ,  thyssenkrupp AG

发明人： Dmitrij SMELJANSKIJ ,  Benjamin MASLOWSKI

IPC分类号： F16F9/34 ,  F16K17/10

摘要： A controllable vibration damper with damping force control may include a damper tube housing that is filled with damping medium. The controllable vibration damper may also include a damping valve element that is structurally and fluidically connected to the damper tube housing for damping force control. The damping valve element may be configured as a pilot-controlled pressure-limiting valve having a pilot valve. Further, a two-stage pre-throttle valve assembly placed in front of the pilot valve. The damping valve element may be arranged internally with respect to the damper tube housing in some cases. In other cases, the tamping valve element may be arranged externally with respect to the damper tube housing.

公开(公告)号：US11002371B2

公开(公告)日：2021-05-11

申请号：US16452774

申请日：2019-06-26

申请人： Beijing Kohler Ltd.

发明人： Pengcheng Xia

IPC分类号： F16K7/04 ,  F16K1/48 ,  F16K3/24 ,  F16K31/145 ,  F16K31/40 ,  F16K31/365 ,  F16K17/10 ,  F16K39/02 ,  F16K21/06 ,  F16K27/02

摘要： A flow regulating switch valve includes a valve core that includes a switch assembly configured to drive a diaphragm assembly to open or close a water outlet, and also includes a flow regulating assembly that comprises a rotating ring, a sliding block, and a magnet. A control key is configured to control the switch assembly. The rotating ring is connected to the control key and includes an inclined plane that transitions from high to low and is configured to drive the sliding block to slide up and down such that the sliding block drives the magnet to move up and down. The magnet is configured to control the diaphragm assembly to regulate a size of the water outlet.