US20110041681A1 - Positive-displacement machine - Google Patents

Positive-displacement machine Download PDF

Info

Publication number
US20110041681A1
US20110041681A1 US12/858,598 US85859810A US2011041681A1 US 20110041681 A1 US20110041681 A1 US 20110041681A1 US 85859810 A US85859810 A US 85859810A US 2011041681 A1 US2011041681 A1 US 2011041681A1
Authority
US
United States
Prior art keywords
cylinder
positive
valves
displacement machine
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/858,598
Other languages
English (en)
Inventor
Michael Duerr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DUERR, MICHAEL
Publication of US20110041681A1 publication Critical patent/US20110041681A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/063—Control by using a valve in a system with several pumping chambers wherein the flow-path through the chambers can be changed, e.g. between series and parallel flow

Definitions

  • the invention relates to a hydraulic positive-displacement machine.
  • one high-pressure valve and one low-pressure valve per cylinder-piston unit are provided, and the valves are, mechanically controlled.
  • the high-pressure valve of each unit for instance always opens if a certain built-up pressure in the applicable cylinder of the unit is exceeded, so that the pressure fluid with elevated pressure can flow off to the high-pressure side of the pump.
  • a disadvantage of such hydrostatic positive-displacement machines is that all the cylinder-piston units are always active, or in other words that the volume flow of the machine is always defined by the displacement of all the units.
  • DDUs valve-controlled positive-displacement machines, known as digital displacement units (DDUs), in which each cylinder-piston unit is assigned one electrically actuated low-pressure valve and one electrically actuated high-pressure valve.
  • DDUs digital displacement units
  • the units are triggerable via the two valves separately in the pump mode, motor mode and a so-called idle mode.
  • individual units can be deactivated by permanently opening the low-pressure valves and closing the high-pressure valve, or in other words they can be switched to be forceless by suitable actuation of both valves. It is thus possible to reduce the volume flow or the rotary speed of the positive-displacement machines.
  • valve-controlled positive-displacement machines A disadvantage of such valve-controlled positive-displacement machines is that the cylinder-piston units switched to be forceless in the idle mode also have pressure fluid flowing through them, resulting in a friction loss.
  • a disadvantage of such positive-displacement machines is that the cylinder-piston units of the second radial plane can be switched on or off only in common.
  • the hydraulic positive-displacement machine has at least two groups, spaced apart radially or axially from one another, of cylinder-piston units, in which cylinders of the primary group can be made to communicate fluidically with cylinders of the secondary group via intermediate valves.
  • at least two intermediate valves are switchable independently of one another. As a result, the flexibility of the volumetric flow (in the case of a pump) or torque (In the case of a motor) is increased.
  • the number of cylinder-piston units is equivalent to the number of secondary cylinder-piston units.
  • Cylinder heads are secured in pairs on one another and can be made to communicate fluidically via an intermediate valve, and wherein all the intermediate valves are switchable independently of one another.
  • each primary cylinder-piston unit can be activated or deactivated via an electrically or electrohydraulically actuated high-pressure valve and via an electrically or electrohydraulically actuated low-pressure valve.
  • individual cylinder-piston units can be switched to be forceless, and the volumetric or rpm of the positive-displacement machine can thus be adjusted.
  • this digital displacement unit (DUO) the flexibility of the primary cylinder-piston units and thus of the entire positive-displacement machine is also maximized.
  • the positive-displacement machine is a radial piston machine
  • the primary cylinder-piston units are located in a primary radial plane
  • the secondary cylinder-piston units are located in a secondary radial plane
  • the planes are located spaced apart from one another along an axis of rotation of a shaft.
  • the cylinder heads are each located in pairs one after the other in the axial direction of the shaft.
  • the positive-displacement machine is an axial piston machine, and the primary cylinder-piston units are located on an inner circular cylinder, and the secondary cylinder-piston units are located on an outer circular cylinder.
  • the intermediate valves are unlockable check valves embodied as seat valves, whose closing direction in each case is oriented from the primary cylinder to the secondary cylinder.
  • the positive-displacement machine is a motor
  • a closing body of each check valve in a currentless basic position, blocks off a respective connecting conduit between the cylinder heads, and in a position activated by a lifting magnet, it uncovers the respective connecting conduit.
  • the secondary units can be switched on by the supply of current to the lifting magnets, to increase the absorption volume and torque of the motor. In continuous operation of the motor, the secondary units are blocked off by shutoff of the current for the lifting magnets.
  • Each check valve can have a valve body, whose reciprocation direction is located approximately parallel to the shaft, and wherein the closing body is located on one end portion of the valve body, and a magnet armature of the lifting magnet is disposed on another end portion of the valve body.
  • Each lifting magnet can be located on the side of the secondary cylinder head remote from the primary cylinder head, and wherein each valve body has an intermediate portion, which penetrates a work chamber of the respective secondary cylinder head.
  • the intermediate valves can be embodied as switching more slowly than the high-pressure valves and the low-pressure valves, if the intermediate valves are active only during the running up of the motor to operating speed and are shut off at higher rpm levels.
  • the intermediate valves are proportional valves.
  • suction throttling can be achieved, as a result of which the secondary cylinders that are switched on are not completely filled.
  • the volumetric flow or rpm stages that result from the stroke volumes of the secondary cylinder-piston units in a characteristic curve of the machine are smoothed.
  • the secondary cylinder-piston units have a larger idle volume than the primary cylinder-piston units.
  • FIG. 1 shows one exemplary embodiment of a valve-controlled radial piston machine of the invention, in a longitudinal section
  • FIG. 2 is a detail of the exemplary embodiment of FIG. 1 .
  • Each of the cylinder-piston units 6 a , 6 b, 8 a, 8 b has a work chamber 10 a, 10 b, 12 a, 12 b and a piston 14 a, 14 b, 16 a, 16 b; the pistons 14 a, 14 b, 16 a, 16 b are braced on an eccentric element 18 of the shaft 4 .
  • the primary cylinder-piston units 6 a, 6 b are embodied as Digital Displacement Units (DDUs), and each has one electrically actuated high-pressure valve (not shown) and one electrically actuated low-pressure valve 24 a, 24 b.
  • DDUs Digital Displacement Units
  • each primary cylinder-piston unit 6 a, 6 b can be operated in either the motor or pump mode or in the idle mode.
  • the corresponding primary work chamber 10 a, 10 b is permanently in communication via the low-pressure valve 24 a, 24 b with a low-pressure connection of the machine and is disconnected from a high-pressure connection (neither of these connections is shown) and is thus switched to be forceless or in other words inactive.
  • three of the total of six primary cylinder-piston units 6 a , 6 b can be deactivated by the idle mode. As a result, a delivery volume (in the case of a pump) or a power takeoff rpm of the shaft 4 (in the case of a motor) is reduced.
  • FIG. 2 shows a detail of the radial piston machine of FIG. 1 .
  • the cylinders 26 a, 28 a are received pivotably in a cylinder head 30 a, 32 a, so that the piston 14 a, 16 a guided in the cylinder 26 a, 28 a can also rest uniformly on the oblique transitional regions (not shown) of the eccentric element 18 .
  • the pistons 14 a, 16 a are each prestressed against the eccentric element 18 by a respective compression spring 34 a, 36 a braced on the cylinder 26 a, 28 a.
  • a closure 44 is inserted in sealing fashion; its size is approximately equivalent to that of the low-pressure valve 24 a.
  • all the primary work chambers 10 a communicate via a respective connecting conduit 46 , 48 with a respective secondary work chamber 12 a .
  • Each connecting conduit 46 , 48 extends approximately parallel to the shaft 4 and discharges into the respective cylinder head 30 a, 32 a.
  • an unlockable check valve 50 is located, whose approximately spherical closing body 51 , in the closed state of the valve as shown, rests sealingly on a valve seat.
  • each connecting conduit 46 , 48 and each check valve 50 is assigned a separate lifting magnet 54 , 56 , so that each individual secondary cylinder-piston unit 8 a can be connected to the primary unit 6 a, or disconnected from it.
  • each lifting magnet can be located on the side of the primary cylinder head remote from the secondary cylinder head, and each valve body has an intermediate portion that penetrates a work chamber of the respective primary cylinder head.
  • This exemplary embodiment has the advantage that the lifting magnet is not in the pressure fluid, but instead is in a dry area.
  • a hydraulic positive-displacement machine having at least two radially or axially spaced-apart groups of cylinder-piston units; cylinders of the primary group can be made to communicate fluidically with cylinders of the secondary group via intermediate valves. At least two intermediate valves can be switched independently of one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
  • Reciprocating Pumps (AREA)
US12/858,598 2009-08-21 2010-08-18 Positive-displacement machine Abandoned US20110041681A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009038438A DE102009038438A1 (de) 2009-08-21 2009-08-21 Verdrängermaschine
DE102009038438.3 2009-08-21

Publications (1)

Publication Number Publication Date
US20110041681A1 true US20110041681A1 (en) 2011-02-24

Family

ID=43495495

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/858,598 Abandoned US20110041681A1 (en) 2009-08-21 2010-08-18 Positive-displacement machine

Country Status (2)

Country Link
US (1) US20110041681A1 (de)
DE (1) DE102009038438A1 (de)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937085A (zh) * 2012-11-16 2013-02-20 无锡汇虹机械制造有限公司 一种正流量挖掘机液压泵排量调节方法
CN107110132A (zh) * 2014-10-13 2017-08-29 丹佛斯动力系统有限责任两合公司 用于液压泵的控制器
US20220372857A1 (en) * 2021-05-24 2022-11-24 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods
US11512571B2 (en) 2020-06-24 2022-11-29 Bj Energy Solutions, Llc Automated diagnostics of electronic instrumentation in a system for fracturing a well and associated methods
US11512642B1 (en) 2019-09-13 2022-11-29 Bj Energy Solutions, Llc Direct drive unit removal system and associated methods
US11512570B2 (en) 2020-06-09 2022-11-29 Bj Energy Solutions, Llc Systems and methods for exchanging fracturing components of a hydraulic fracturing unit
US11530602B2 (en) 2019-09-13 2022-12-20 Bj Energy Solutions, Llc Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods
US11542868B2 (en) 2020-05-15 2023-01-03 Bj Energy Solutions, Llc Onboard heater of auxiliary systems using exhaust gases and associated methods
US11542802B2 (en) 2020-06-24 2023-01-03 Bj Energy Solutions, Llc Hydraulic fracturing control assembly to detect pump cavitation or pulsation
US11555756B2 (en) 2019-09-13 2023-01-17 Bj Energy Solutions, Llc Fuel, communications, and power connection systems and related methods
US11560845B2 (en) 2019-05-15 2023-01-24 Bj Energy Solutions, Llc Mobile gas turbine inlet air conditioning system and associated methods
US11560848B2 (en) 2019-09-13 2023-01-24 Bj Energy Solutions, Llc Methods for noise dampening and attenuation of turbine engine
US11566506B2 (en) 2020-06-09 2023-01-31 Bj Energy Solutions, Llc Methods for detection and mitigation of well screen out
US11566505B2 (en) 2020-06-23 2023-01-31 Bj Energy Solutions, Llc Systems and methods to autonomously operate hydraulic fracturing units
US11572774B2 (en) 2020-06-22 2023-02-07 Bj Energy Solutions, Llc Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing
US11598188B2 (en) 2020-06-22 2023-03-07 Bj Energy Solutions, Llc Stage profiles for operations of hydraulic systems and associated methods
US11598263B2 (en) 2019-09-13 2023-03-07 Bj Energy Solutions, Llc Mobile gas turbine inlet air conditioning system and associated methods
US11598264B2 (en) 2020-06-05 2023-03-07 Bj Energy Solutions, Llc Systems and methods to enhance intake air flow to a gas turbine engine of a hydraulic fracturing unit
US11603744B2 (en) 2020-07-17 2023-03-14 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations
US11603745B2 (en) 2020-05-28 2023-03-14 Bj Energy Solutions, Llc Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods
US11608725B2 (en) 2019-09-13 2023-03-21 Bj Energy Solutions, Llc Methods and systems for operating a fleet of pumps
US11624326B2 (en) 2017-05-21 2023-04-11 Bj Energy Solutions, Llc Methods and systems for supplying fuel to gas turbine engines
US11627683B2 (en) 2020-06-05 2023-04-11 Bj Energy Solutions, Llc Enclosure assembly for enhanced cooling of direct drive unit and related methods
US11635074B2 (en) 2020-05-12 2023-04-25 Bj Energy Solutions, Llc Cover for fluid systems and related methods
US11643915B2 (en) 2020-06-09 2023-05-09 Bj Energy Solutions, Llc Drive equipment and methods for mobile fracturing transportation platforms
US11649820B2 (en) 2020-06-23 2023-05-16 Bj Energy Solutions, Llc Systems and methods of utilization of a hydraulic fracturing unit profile to operate hydraulic fracturing units
US11719234B2 (en) 2019-09-13 2023-08-08 Bj Energy Solutions, Llc Systems and method for use of single mass flywheel alongside torsional vibration damper assembly for single acting reciprocating pump
US11761846B2 (en) 2019-09-13 2023-09-19 Bj Energy Solutions, Llc Fuel, communications, and power connection systems and related methods
US11867118B2 (en) 2019-09-13 2024-01-09 Bj Energy Solutions, Llc Methods and systems for supplying fuel to gas turbine engines
US11898504B2 (en) 2020-05-14 2024-02-13 Bj Energy Solutions, Llc Systems and methods utilizing turbine compressor discharge for hydrostatic manifold purge
US11933153B2 (en) 2020-06-22 2024-03-19 Bj Energy Solutions, Llc Systems and methods to operate hydraulic fracturing units using automatic flow rate and/or pressure control
US11939853B2 (en) 2020-06-22 2024-03-26 Bj Energy Solutions, Llc Systems and methods providing a configurable staged rate increase function to operate hydraulic fracturing units
US11994014B2 (en) 2023-01-25 2024-05-28 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6056516A (en) * 1997-10-11 2000-05-02 Wabco Standard Gmbh Compressor installation having a control valve arrangement for independently switching compression chambers between delivery partial delivery and idle operation
WO2006010907A1 (en) * 2004-07-27 2006-02-02 Sensam Limited Dual chamber gas sampling device with indicators

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0507662D0 (en) 2005-04-15 2005-05-25 Artemis Intelligent Power Ltd Fluid-working machines
GB0614930D0 (en) 2006-07-27 2006-09-06 Arternis Intelligent Power Ltd Hydrostatic regenerative drive system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6056516A (en) * 1997-10-11 2000-05-02 Wabco Standard Gmbh Compressor installation having a control valve arrangement for independently switching compression chambers between delivery partial delivery and idle operation
WO2006010907A1 (en) * 2004-07-27 2006-02-02 Sensam Limited Dual chamber gas sampling device with indicators

Cited By (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937085A (zh) * 2012-11-16 2013-02-20 无锡汇虹机械制造有限公司 一种正流量挖掘机液压泵排量调节方法
CN107110132A (zh) * 2014-10-13 2017-08-29 丹佛斯动力系统有限责任两合公司 用于液压泵的控制器
US20170306936A1 (en) * 2014-10-13 2017-10-26 Danfoss Power Solutions Gmbh & Co. Ohg Controller for hydraulic pump
US11441549B2 (en) * 2014-10-13 2022-09-13 Danfoss Power Solutions Gmbh & Co. Ohg Controller for hydraulic pump
US11624326B2 (en) 2017-05-21 2023-04-11 Bj Energy Solutions, Llc Methods and systems for supplying fuel to gas turbine engines
US11560845B2 (en) 2019-05-15 2023-01-24 Bj Energy Solutions, Llc Mobile gas turbine inlet air conditioning system and associated methods
US11629584B2 (en) 2019-09-13 2023-04-18 Bj Energy Solutions, Llc Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods
US11767791B2 (en) 2019-09-13 2023-09-26 Bj Energy Solutions, Llc Mobile gas turbine inlet air conditioning system and associated methods
US11530602B2 (en) 2019-09-13 2022-12-20 Bj Energy Solutions, Llc Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods
US11719234B2 (en) 2019-09-13 2023-08-08 Bj Energy Solutions, Llc Systems and method for use of single mass flywheel alongside torsional vibration damper assembly for single acting reciprocating pump
US11725583B2 (en) 2019-09-13 2023-08-15 Bj Energy Solutions, Llc Mobile gas turbine inlet air conditioning system and associated methods
US11655763B1 (en) 2019-09-13 2023-05-23 Bj Energy Solutions, Llc Direct drive unit removal system and associated methods
US11555756B2 (en) 2019-09-13 2023-01-17 Bj Energy Solutions, Llc Fuel, communications, and power connection systems and related methods
US11512642B1 (en) 2019-09-13 2022-11-29 Bj Energy Solutions, Llc Direct drive unit removal system and associated methods
US11560848B2 (en) 2019-09-13 2023-01-24 Bj Energy Solutions, Llc Methods for noise dampening and attenuation of turbine engine
US11761846B2 (en) 2019-09-13 2023-09-19 Bj Energy Solutions, Llc Fuel, communications, and power connection systems and related methods
US11649766B1 (en) 2019-09-13 2023-05-16 Bj Energy Solutions, Llc Mobile gas turbine inlet air conditioning system and associated methods
US11971028B2 (en) 2019-09-13 2024-04-30 Bj Energy Solutions, Llc Systems and method for use of single mass flywheel alongside torsional vibration damper assembly for single acting reciprocating pump
US11578660B1 (en) 2019-09-13 2023-02-14 Bj Energy Solutions, Llc Direct drive unit removal system and associated methods
US11867118B2 (en) 2019-09-13 2024-01-09 Bj Energy Solutions, Llc Methods and systems for supplying fuel to gas turbine engines
US11598263B2 (en) 2019-09-13 2023-03-07 Bj Energy Solutions, Llc Mobile gas turbine inlet air conditioning system and associated methods
US11619122B2 (en) 2019-09-13 2023-04-04 Bj Energy Solutions, Llc Methods and systems for operating a fleet of pumps
US11604113B2 (en) 2019-09-13 2023-03-14 Bj Energy Solutions, Llc Fuel, communications, and power connection systems and related methods
US11613980B2 (en) 2019-09-13 2023-03-28 Bj Energy Solutions, Llc Methods and systems for operating a fleet of pumps
US11852001B2 (en) 2019-09-13 2023-12-26 Bj Energy Solutions, Llc Methods and systems for operating a fleet of pumps
US11859482B2 (en) 2019-09-13 2024-01-02 Bj Energy Solutions, Llc Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods
US11608725B2 (en) 2019-09-13 2023-03-21 Bj Energy Solutions, Llc Methods and systems for operating a fleet of pumps
US11708829B2 (en) 2020-05-12 2023-07-25 Bj Energy Solutions, Llc Cover for fluid systems and related methods
US11635074B2 (en) 2020-05-12 2023-04-25 Bj Energy Solutions, Llc Cover for fluid systems and related methods
US11898504B2 (en) 2020-05-14 2024-02-13 Bj Energy Solutions, Llc Systems and methods utilizing turbine compressor discharge for hydrostatic manifold purge
US11698028B2 (en) 2020-05-15 2023-07-11 Bj Energy Solutions, Llc Onboard heater of auxiliary systems using exhaust gases and associated methods
US11624321B2 (en) 2020-05-15 2023-04-11 Bj Energy Solutions, Llc Onboard heater of auxiliary systems using exhaust gases and associated methods
US11959419B2 (en) 2020-05-15 2024-04-16 Bj Energy Solutions, Llc Onboard heater of auxiliary systems using exhaust gases and associated methods
US11542868B2 (en) 2020-05-15 2023-01-03 Bj Energy Solutions, Llc Onboard heater of auxiliary systems using exhaust gases and associated methods
US11814940B2 (en) 2020-05-28 2023-11-14 Bj Energy Solutions Llc Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods
US11603745B2 (en) 2020-05-28 2023-03-14 Bj Energy Solutions, Llc Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods
US11746698B2 (en) 2020-06-05 2023-09-05 Bj Energy Solutions, Llc Systems and methods to enhance intake air flow to a gas turbine engine of a hydraulic fracturing unit
US11891952B2 (en) 2020-06-05 2024-02-06 Bj Energy Solutions, Llc Systems and methods to enhance intake air flow to a gas turbine engine of a hydraulic fracturing unit
US11723171B2 (en) 2020-06-05 2023-08-08 Bj Energy Solutions, Llc Enclosure assembly for enhanced cooling of direct drive unit and related methods
US11627683B2 (en) 2020-06-05 2023-04-11 Bj Energy Solutions, Llc Enclosure assembly for enhanced cooling of direct drive unit and related methods
US11598264B2 (en) 2020-06-05 2023-03-07 Bj Energy Solutions, Llc Systems and methods to enhance intake air flow to a gas turbine engine of a hydraulic fracturing unit
US11512570B2 (en) 2020-06-09 2022-11-29 Bj Energy Solutions, Llc Systems and methods for exchanging fracturing components of a hydraulic fracturing unit
US11643915B2 (en) 2020-06-09 2023-05-09 Bj Energy Solutions, Llc Drive equipment and methods for mobile fracturing transportation platforms
US11566506B2 (en) 2020-06-09 2023-01-31 Bj Energy Solutions, Llc Methods for detection and mitigation of well screen out
US11629583B2 (en) 2020-06-09 2023-04-18 Bj Energy Solutions, Llc Systems and methods for exchanging fracturing components of a hydraulic fracturing unit
US11939854B2 (en) 2020-06-09 2024-03-26 Bj Energy Solutions, Llc Methods for detection and mitigation of well screen out
US11867046B2 (en) 2020-06-09 2024-01-09 Bj Energy Solutions, Llc Systems and methods for exchanging fracturing components of a hydraulic fracturing unit
US11572774B2 (en) 2020-06-22 2023-02-07 Bj Energy Solutions, Llc Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing
US11952878B2 (en) 2020-06-22 2024-04-09 Bj Energy Solutions, Llc Stage profiles for operations of hydraulic systems and associated methods
US11898429B2 (en) 2020-06-22 2024-02-13 Bj Energy Solutions, Llc Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing
US11598188B2 (en) 2020-06-22 2023-03-07 Bj Energy Solutions, Llc Stage profiles for operations of hydraulic systems and associated methods
US11933153B2 (en) 2020-06-22 2024-03-19 Bj Energy Solutions, Llc Systems and methods to operate hydraulic fracturing units using automatic flow rate and/or pressure control
US11732565B2 (en) 2020-06-22 2023-08-22 Bj Energy Solutions, Llc Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing
US11939853B2 (en) 2020-06-22 2024-03-26 Bj Energy Solutions, Llc Systems and methods providing a configurable staged rate increase function to operate hydraulic fracturing units
US11639655B2 (en) 2020-06-22 2023-05-02 Bj Energy Solutions, Llc Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing
US11649820B2 (en) 2020-06-23 2023-05-16 Bj Energy Solutions, Llc Systems and methods of utilization of a hydraulic fracturing unit profile to operate hydraulic fracturing units
US11939974B2 (en) 2020-06-23 2024-03-26 Bj Energy Solutions, Llc Systems and methods of utilization of a hydraulic fracturing unit profile to operate hydraulic fracturing units
US11661832B2 (en) 2020-06-23 2023-05-30 Bj Energy Solutions, Llc Systems and methods to autonomously operate hydraulic fracturing units
US11719085B1 (en) 2020-06-23 2023-08-08 Bj Energy Solutions, Llc Systems and methods to autonomously operate hydraulic fracturing units
US11566505B2 (en) 2020-06-23 2023-01-31 Bj Energy Solutions, Llc Systems and methods to autonomously operate hydraulic fracturing units
US11542802B2 (en) 2020-06-24 2023-01-03 Bj Energy Solutions, Llc Hydraulic fracturing control assembly to detect pump cavitation or pulsation
US11746638B2 (en) 2020-06-24 2023-09-05 Bj Energy Solutions, Llc Automated diagnostics of electronic instrumentation in a system for fracturing a well and associated methods
US11512571B2 (en) 2020-06-24 2022-11-29 Bj Energy Solutions, Llc Automated diagnostics of electronic instrumentation in a system for fracturing a well and associated methods
US11668175B2 (en) 2020-06-24 2023-06-06 Bj Energy Solutions, Llc Automated diagnostics of electronic instrumentation in a system for fracturing a well and associated methods
US11692422B2 (en) 2020-06-24 2023-07-04 Bj Energy Solutions, Llc System to monitor cavitation or pulsation events during a hydraulic fracturing operation
US11603744B2 (en) 2020-07-17 2023-03-14 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations
US11920450B2 (en) 2020-07-17 2024-03-05 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations
US11608727B2 (en) 2020-07-17 2023-03-21 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations
US11867045B2 (en) * 2021-05-24 2024-01-09 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods
US20220412201A1 (en) * 2021-05-24 2022-12-29 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods
US20230082868A1 (en) * 2021-05-24 2023-03-16 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods
US11639654B2 (en) * 2021-05-24 2023-05-02 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods
US11732563B2 (en) * 2021-05-24 2023-08-22 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods
US20220372857A1 (en) * 2021-05-24 2022-11-24 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods
US11994014B2 (en) 2023-01-25 2024-05-28 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations

Also Published As

Publication number Publication date
DE102009038438A1 (de) 2011-02-24

Similar Documents

Publication Publication Date Title
US20110041681A1 (en) Positive-displacement machine
JP3325575B2 (ja) 内燃機関のシャフトを相対的に回転させるための装置及びこの装置を制御するための方法
KR101476494B1 (ko) 유체 작동 기계 및 방법
US9200648B2 (en) Fluid control valve systems, fluid systems equipped therewith, and methods of using
US20120103179A1 (en) Pump unit
JP2001263197A (ja) 内燃機関用の燃料噴射系及びハイドロリック式の弁制御装置への供給のために働くポンプ
US20070240563A1 (en) DOUBLE-ACTING RADIAL PlSTON HYDRAULIC APPARATUS
GB2459520A (en) Fluid machine with secondary low pressure port opening before controlled primary valve
US9140244B2 (en) Piston pump with cam actuated valves
CN110892135A (zh) 利用往复活塞式机器进行气体膨胀的方法和装置
US11215291B2 (en) Valve assembly
US8469677B1 (en) Check valve pump with electric bypass valve
KR101691061B1 (ko) 밸브 조립체 및 이를 구비한 가변오일펌프 시스템
CN112483344A (zh) 静液压的活塞机单元
JP2009013908A (ja) ピストンポンプ又はモータ

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION