公开(公告)号：US12221956B2

公开(公告)日：2025-02-11

申请号：US17152134

申请日：2021-01-19

Applicant: Surpass Industry Co., Ltd.

Inventor： Hiroshi Imai

IPC: F04B43/09 ,  F04B11/00 ,  F04B43/12 ,  F04B53/16

Abstract: Provided is a tube pump including: a housing unit that has an inner peripheral surface, which is formed in an arc shape around an axis, along which a tube with flexibility is disposed, and that is opened toward one end side along the axis; a pair of roller units that are accommodated in the housing unit and rotate about the axis in a state in which the tube is blocked; a pair of drive units that cause each of the pair of roller units to rotate about the axis in the same direction; and a cover member that is disposed in the housing unit such that the cover member covers the pair of roller units and provides an annular opening region into which the tube is able to be inserted toward the inner peripheral surface.

公开(公告)号：US20240280091A1

公开(公告)日：2024-08-22

申请号：US18596260

申请日：2024-03-05

Applicant: DIONEX SOFTRON GMBH

Inventor： Christoph STROBL

IPC: F04B11/00 ,  G01N30/32 ,  G01N30/34 ,  G01N30/36

CPC classification number: F04B11/0058 ,  G01N30/36 ,  G01N2030/324 ,  G01N2030/326 ,  G01N30/34

Abstract: A control device of a piston pump unit comprising at least two piston-cylinder units that operate in a phase-shifted manner for the purpose of liquid chromatography and to a piston pump unit is described. The control device corrects fluctuations of the system pressure while switching from one piston cylinder unit to the respective other piston cylinder unit. The fluctuations can occur as a result of the cooling of the liquid medium that is heated in an adiabatic manner during a pre-compression phase in the working piston. The control unit controls the piston speed of at least one piston-cylinder unit during the transition phase depending on at least one characteristic, which is ascertained from chronologically previously detected pressure values, such that variations of the system pressure as a result of the cooling of the adiabatically heated medium are at least partially compensated for.

公开(公告)号：US12006926B1

公开(公告)日：2024-06-11

申请号：US16879965

申请日：2020-05-21

Applicant: W. H. Barnett, Jr.

Inventor： W. H. Barnett, Jr.

IPC: F16K15/06 ,  F04B11/00 ,  F04B15/02 ,  F16L41/03 ,  F16L55/055 ,  E21B43/26

CPC classification number: F04B11/00 ,  F04B15/02 ,  F16L41/03 ,  F16L55/055 ,  E21B43/2607

Abstract: The anti-cavitation device comprises a housing and valve assembly. A fluid end comprises one or more intake chambers, one or more exhaust chambers, a compression chamber, a plunger chamber, and one or more intake manifolds. The intake manifolds are fluidly connected to the intake chambers such that the intake manifolds are adapted to deliver the hydraulic fracturing fluid to the intake chambers. The intake chambers comprise intake valve assemblies adapted to regulate flow from the intake chambers to the compression chamber. One of the intake chambers comprises an anti-cavitation chamber positioned across from and co-planar with the plunger chamber. The anti-cavitation device is positioned within the anti-cavitation chamber. A method of reducing cavitation is provided, the method comprises the step of inserting the anti-cavitation device into the access opening of the fluid end. The anti-cavitation device may be used in existing, previously used, or new fluid ends.

公开(公告)号：US20240141879A1

公开(公告)日：2024-05-02

申请号：US18548251

申请日：2022-03-02

Applicant: Equilibar, LLC

Inventor： Zachary Allan Cobb ,  Jeffrey D. Jennings ,  Carlyle Leonard Donevant, IV ,  Ryan Matthew Heffner ,  Tony Boyd Tang

IPC: F04B11/00 ,  F04B43/12 ,  F16K7/17 ,  F16K31/126

CPC classification number: F04B11/00 ,  F04B43/12 ,  F16K7/17 ,  F16K31/1266

Abstract: A pulsation dampener includes: a centerbody assembly having: a chamber including a first opening bounded by a wall defining a first surface; an outlet port communicating with the chamber; an inlet port communicating with the chamber; a flexible first diaphragm, wherein a perimeter of the first diaphragm is bonded to the first surface forming a seal that blocks the passage of fluid; a first cap disposed adjacent the first diaphragm, defining a first cavity between the first cap and the first diaphragm; an inlet orifice formed in the first cap communicating with the first cavity; an exhaust orifice formed in the first cap communicating with the first cavity; and a valve seat disposed in the first cavity in fluid communication with the exhaust orifice. The first diaphragm is moveable between an open position spaced away from the valve seat, and a closed position sealed against the valve seat.

公开(公告)号：US20240133370A1

公开(公告)日：2024-04-25

申请号：US18269110

申请日：2021-12-20

Applicant: FLUIGENT

Inventor： Cristian Glavana ,  Jean-Louis Viovy

IPC: F04B43/04 ,  F04B11/00 ,  F04B45/047

CPC classification number: F04B43/046 ,  F04B11/0091 ,  F04B45/047

Abstract: The present invention relates to an apparatus (2) for controlling pressure or flow in a fluidic system (3), the apparatus (2) comprising: a first connection device (301) comprising a pumping device (304) and a main outlet (310); a second connection device (302) comprising a flow restriction (305); a third connection device (303) comprising a valve with a modifiable aperture (306); wherein the second connection device (302) and the third connection device (303) are connected to the first connection device (301) at a position between the pumping device (304) and the main outlet (310).

公开(公告)号：US11959467B2

公开(公告)日：2024-04-16

申请号：US17063870

申请日：2020-10-06

Applicant: Christoph Strobl

Inventor： Christoph Strobl

IPC: F04B11/00 ,  G01N30/36 ,  G01N30/32 ,  G01N30/34

CPC classification number: F04B11/0058 ,  G01N30/36 ,  G01N2030/324 ,  G01N2030/326 ,  G01N30/34

Abstract: A control device of a piston pump unit comprising at least two piston-cylinder units that operate in a phase-shifted manner for the purpose of liquid chromatography and to a piston pump unit is described. The control device corrects fluctuations of the system pressure while switching from one piston cylinder unit to the respective other piston cylinder unit. The fluctuations can occur as a result of the cooling of the liquid medium that is heated in an adiabatic manner during a pre-compression phase in the working piston. The control unit controls the piston speed of at least one piston-cylinder unit during the transition phase depending on at least one characteristic, which is ascertained from chronologically previously detected pressure values, such that variations of the system pressure as a result of the cooling of the adiabatically heated medium are at least partially compensated for.

公开(公告)号：US11913481B2

公开(公告)日：2024-02-27

申请号：US17255587

申请日：2019-06-27

Applicant: STEM NUMERICAL ENGINEERING S.R.L.

Inventor： Mario Antonio Morselli

IPC: F15B21/00 ,  F04B11/00 ,  F16L55/027

CPC classification number: F15B21/008 ,  F04B11/0091 ,  F15B2211/8616 ,  F16L55/02772

Abstract: The present invention concerns an attenuation device (1) of the fluid flow pulsation along a duct of a hydraulic circuit connected with a hydraulic machine, comprising at least an attenuation module (3) passed through by a pass-through duct (5) configured to be placed in fluid communication with said duct of said hydraulic circuit. In particular, in said attenuation module (3) a first duct (7) is obtained having an opened first end (70) in fluid communication with said pass-through duct (5), and a closed second end, said first duct (7) extending along a curved line comprising a plurality of curved sections, said first duct (7) being adapted to attenuate the pulsation of said fluid flow along said duct of said hydraulic circuit to reduce the vibrations generated by said pulsation of said fluid flow.

公开(公告)号：US20240011472A1

公开(公告)日：2024-01-11

申请号：US18372498

申请日：2023-09-25

Applicant: Biosense Webster (Israel) Ltd.

Inventor： Yehuda Algawi ,  Assaf Govari ,  Ilya Sitnitsky ,  Gili Attias

IPC: F04B5/02 ,  F04B11/00 ,  A61M5/142

CPC classification number: F04B5/02 ,  F04B11/0008 ,  A61M5/14216 ,  F04B11/00 ,  A61M5/1422

Abstract: A disposable single-piston dual-action reciprocating pump part includes a single piston, an output port, and a balloon damper. The output port is configured for outputting fluid pumped by the single piston. The balloon damper is fitted in the output port, and the balloon damper is configured to suppress a pulsation in a flow rate of the outputted fluid.

公开(公告)号：US11686328B2

公开(公告)日：2023-06-27

申请号：US16526815

申请日：2019-07-30

Applicant: Performance Pulsation Control, Inc.

Inventor： John Thomas Rogers

IPC: F16L55/04 ,  F15B1/08 ,  F15B1/02 ,  F04B11/00

CPC classification number: F15B1/086 ,  F15B1/021 ,  F16L55/04 ,  F04B11/0016 ,  F04B11/0091 ,  F15B2201/3154 ,  F15B2201/4056 ,  F15B2201/60 ,  F15B2201/605

Abstract: An annular tube (or other shape) of elastomeric cellular material comprising elastomeric closed cells having gas infused therein is supported by structures protruding from the bottom surface of a suction stabilizer's head and/or by structures within the interior volume of the annular body of the suction stabilizer, preferably with spacing between the outer diameter of the annular tube of the cellular material and the inner walls of the suction stabilizer body. The gas-infused closed cell material may thus be employed in new suction stabilizer or pulsation dampener or to retrofit existing suction stabilizers or pulsation dampeners designed for a gas-filled bladder.

公开(公告)号：US11655816B2

公开(公告)日：2023-05-23

申请号：US14707727

申请日：2015-05-08

Applicant: Danfoss Power Solutions GmbH & Co. OHG

Inventor： Elliott Gruber ,  Luke Wadsley

IPC: F04C15/00 ,  F04C2/12 ,  F04C15/06 ,  F04C29/12 ,  F04C29/00 ,  F04C29/06 ,  F04B53/16 ,  F04C2/02 ,  F04C2/16 ,  F04C2/18 ,  F04C2/344 ,  F04C18/02 ,  F04C18/16 ,  F04C18/18 ,  F04C18/12 ,  F04C18/344 ,  F04B11/00 ,  F04B39/12

CPC classification number: F04C15/0049 ,  F04B11/00 ,  F04B11/0091 ,  F04B39/12 ,  F04B53/16 ,  F04C2/025 ,  F04C2/126 ,  F04C2/16 ,  F04C2/18 ,  F04C2/344 ,  F04C15/064 ,  F04C18/0215 ,  F04C18/126 ,  F04C18/16 ,  F04C18/18 ,  F04C18/344 ,  F04C29/0035 ,  F04C29/063 ,  F04C29/124 ,  F05C2253/14

Abstract: A fluid working system such as a pump for displacing a working fluid such as hydraulic fluid or a motor using a working fluid is provided. The system may have a positive displacement machine which includes one or more working chamber with displacement means such as a cylinder with a reciprocating piston. There are also two or more fluid ports to allow the working fluid to flow into and out of the working chamber. The working fluid flows from one fluid port means to another either being forced to do so when pumped or moving the piston when functioning as an engine. The fluid working system has associated therewith a non-dead compliance volume of a material such as syntactic foam. This compliance volume acts to smooth any pressure fluctuations within the working fluid system.