[go: up one dir, main page]

WO2012073110A3 - Circuit de ventilateur hydraulique à récupération d'énergie - Google Patents

Circuit de ventilateur hydraulique à récupération d'énergie Download PDF

Info

Publication number
WO2012073110A3
WO2012073110A3 PCT/IB2011/002966 IB2011002966W WO2012073110A3 WO 2012073110 A3 WO2012073110 A3 WO 2012073110A3 IB 2011002966 W IB2011002966 W IB 2011002966W WO 2012073110 A3 WO2012073110 A3 WO 2012073110A3
Authority
WO
WIPO (PCT)
Prior art keywords
fan circuit
hydraulic fan
primary pump
motor
low
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.)
Ceased
Application number
PCT/IB2011/002966
Other languages
English (en)
Other versions
WO2012073110A2 (fr
Inventor
Bryan E. Nelson
Jeremy T. Peterson
Jeffrey L. Kuehn
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.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
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 Caterpillar Inc filed Critical Caterpillar Inc
Priority to DE112011103974T priority Critical patent/DE112011103974T5/de
Priority to CN2011800660769A priority patent/CN103339388A/zh
Publication of WO2012073110A2 publication Critical patent/WO2012073110A2/fr
Publication of WO2012073110A3 publication Critical patent/WO2012073110A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20523—Internal combustion engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20561—Type of pump reversible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20569—Type of pump capable of working as pump and motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/27—Directional control by means of the pressure source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/31523—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and an output member
    • F15B2211/31529—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and an output member having a single pressure source and a single output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/633—Electronic controllers using input signals representing a state of the prime mover, e.g. torque or rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6652—Control of the pressure source, e.g. control of the swash plate angle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/88—Control measures for saving energy

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un circuit de ventilateur hydraulique (10). Le circuit de ventilateur hydraulique peut comporter une pompe principale (14), un passage haute pression (26) raccordé fluidiquement avec la pompe principale, et un passage basse pression (24) raccordé fluidiquement avec la pompe primaire. Le circuit de ventilateur hydraulique peut également comporter au moins un accumulateur (68, 70) en communication fluidique sélective avec au moins l'un des passages haute et basse pression, un moteur (18) et un ventilateur (20) raccordé au moteur. Le circuit de ventilateur hydraulique peut comporter en outre une soupape d'isolement de ventilateur (84) raccordée fluidiquement aux passages haute et basse pression. La soupape d'isolement de ventilateur peut être mobile entre une position de passage d'écoulement à laquelle le moteur est raccordé fluidiquement à la pompe principale via les passages haute et basse pression, et une position bloquant l'écoulement à laquelle le moteur est sensiblement isolé de la pompe principale.
PCT/IB2011/002966 2010-11-30 2011-11-22 Circuit de ventilateur hydraulique à récupération d'énergie Ceased WO2012073110A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112011103974T DE112011103974T5 (de) 2010-11-30 2011-11-22 Hydraulikventilatorkreislauf mit Energiewiedergewinnung
CN2011800660769A CN103339388A (zh) 2010-11-30 2011-11-22 具有能量回收的液压风扇回路

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/957,094 US20120134848A1 (en) 2010-11-30 2010-11-30 Hydraulic fan circuit having energy recovery
US12/957,094 2010-11-30

Publications (2)

Publication Number Publication Date
WO2012073110A2 WO2012073110A2 (fr) 2012-06-07
WO2012073110A3 true WO2012073110A3 (fr) 2012-09-07

Family

ID=46126804

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2011/002966 Ceased WO2012073110A2 (fr) 2010-11-30 2011-11-22 Circuit de ventilateur hydraulique à récupération d'énergie

Country Status (4)

Country Link
US (1) US20120134848A1 (fr)
CN (1) CN103339388A (fr)
DE (1) DE112011103974T5 (fr)
WO (1) WO2012073110A2 (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8590650B2 (en) * 2011-04-01 2013-11-26 Agco Corporation Cooling package assembly for work vehicles
JP5956179B2 (ja) * 2012-02-23 2016-07-27 株式会社小松製作所 油圧駆動システム
US9574660B2 (en) 2014-02-21 2017-02-21 Federal Signal Corporation Hydraulic fan drive system
CN103867418B (zh) * 2014-03-31 2016-04-27 苏州汉纳机械有限公司 一种柴油机驱动的空压机系统
US9671009B2 (en) * 2014-10-22 2017-06-06 Deere & Company Pressure and flow compensated hydraulic system
CN104963903B (zh) * 2015-04-12 2018-05-25 吉林大学 基于储能速率最大的液压飞轮蓄能器系统及其控制方法
US9763388B2 (en) * 2015-09-15 2017-09-19 Cnh Industrial America Llc Agricultural harvester having a header based heat exchanger
US9945396B2 (en) 2016-02-23 2018-04-17 Caterpillar Inc. Fluid systems for machines with integrated energy recovery circuit
US10273962B2 (en) 2016-09-26 2019-04-30 Caterpillar Inc. System for selectively bypassing fluid supply to one or more operational systems of a machine
DE112016000708B4 (de) * 2016-11-09 2022-02-17 Komatsu Ltd. Arbeitsfahrzeug und Steuerungsverfahren
JP6827324B2 (ja) * 2016-11-09 2021-02-10 株式会社小松製作所 作業車両およびデータ較正方法
US10330126B2 (en) * 2016-12-16 2019-06-25 Caterpillar Inc. Fan control system with electro-hydraulic valve providing three fan motor operational positions
US11098691B2 (en) 2017-02-03 2021-08-24 General Electric Company Methods for manufacturing wind turbine rotor blades and components thereof
US10830206B2 (en) 2017-02-03 2020-11-10 General Electric Company Methods for manufacturing wind turbine rotor blades and components thereof
CN108691828B (zh) 2017-04-07 2020-10-30 丹佛斯动力系统公司 用于维持最小低侧压力的液压系统或闭路液压系统
US10913216B2 (en) 2017-11-21 2021-02-09 General Electric Company Methods for manufacturing wind turbine rotor blade panels having printed grid structures
US10773464B2 (en) 2017-11-21 2020-09-15 General Electric Company Method for manufacturing composite airfoils
US11390013B2 (en) 2017-11-21 2022-07-19 General Electric Company Vacuum forming mold assembly and associated methods
US10865769B2 (en) 2017-11-21 2020-12-15 General Electric Company Methods for manufacturing wind turbine rotor blade panels having printed grid structures
US10821652B2 (en) 2017-11-21 2020-11-03 General Electric Company Vacuum forming mold assembly and method for creating a vacuum forming mold assembly
US11668275B2 (en) 2017-11-21 2023-06-06 General Electric Company Methods for manufacturing an outer skin of a rotor blade
US10920745B2 (en) 2017-11-21 2021-02-16 General Electric Company Wind turbine rotor blade components and methods of manufacturing the same
US11248582B2 (en) 2017-11-21 2022-02-15 General Electric Company Multiple material combinations for printed reinforcement structures of rotor blades
US11040503B2 (en) 2017-11-21 2021-06-22 General Electric Company Apparatus for manufacturing composite airfoils
US11035339B2 (en) 2018-03-26 2021-06-15 General Electric Company Shear web assembly interconnected with additive manufactured components
US10821696B2 (en) 2018-03-26 2020-11-03 General Electric Company Methods for manufacturing flatback airfoils for wind turbine rotor blades

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6659723B2 (en) * 2001-11-16 2003-12-09 Illinois Tool Works Inc. Fan for an engine driven generator
US6789387B2 (en) * 2002-10-01 2004-09-14 Caterpillar Inc System for recovering energy in hydraulic circuit
US20080295507A1 (en) * 2005-12-23 2008-12-04 Bosch Rexroth Ag Drive Having an Energy Recovery and Retarder Function
WO2010083816A1 (fr) * 2009-01-22 2010-07-29 Robert Bosch Gmbh Entraînement de ventilateur hydrostatique

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662551A (en) * 1970-08-19 1972-05-16 Nutron Corp Fluid pressure controlling
FR2836670B1 (fr) * 2002-03-04 2004-10-08 Messier Bugatti Architecture de systeme hydraulique de commande d'orientation
US6681568B2 (en) * 2002-03-28 2004-01-27 Caterpillar Inc Fluid system for two hydraulic circuits having a common source of pressurized fluid
JP3979917B2 (ja) * 2002-10-18 2007-09-19 サクサ株式会社 油圧装置
US6848255B2 (en) * 2002-12-18 2005-02-01 Caterpillar Inc Hydraulic fan drive system
DE102004044510A1 (de) * 2004-09-15 2006-03-30 Zf Friedrichshafen Ag Hydraulisches Getriebe
US7240486B2 (en) * 2005-04-18 2007-07-10 Caterpillar Inc Electro-hydraulic system for fan driving and brake charging
US7444809B2 (en) 2006-01-30 2008-11-04 Caterpillar Inc. Hydraulic regeneration system
US20080010775A1 (en) * 2006-07-17 2008-01-17 Sweepster Attachments, Llc Rotary broom with vacuum dust control
DE102006050873A1 (de) * 2006-10-27 2008-04-30 Robert Bosch Gmbh Hydrostatischer Antrieb mit Bremsenergierückgewinnung
US7937938B2 (en) * 2008-04-23 2011-05-10 Caterpillar Inc. Hydraulic reversing fan valve and machine using same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6659723B2 (en) * 2001-11-16 2003-12-09 Illinois Tool Works Inc. Fan for an engine driven generator
US6789387B2 (en) * 2002-10-01 2004-09-14 Caterpillar Inc System for recovering energy in hydraulic circuit
US20080295507A1 (en) * 2005-12-23 2008-12-04 Bosch Rexroth Ag Drive Having an Energy Recovery and Retarder Function
WO2010083816A1 (fr) * 2009-01-22 2010-07-29 Robert Bosch Gmbh Entraînement de ventilateur hydrostatique

Also Published As

Publication number Publication date
US20120134848A1 (en) 2012-05-31
DE112011103974T5 (de) 2013-10-24
CN103339388A (zh) 2013-10-02
WO2012073110A2 (fr) 2012-06-07

Similar Documents

Publication Publication Date Title
WO2012073110A3 (fr) Circuit de ventilateur hydraulique à récupération d'énergie
IN2014DN09827A (fr)
MX360091B (es) Válvulas de seguridad integrales de etapas múltiples.
WO2012052658A3 (fr) Dispositif de lubrification avec vanne de derivation.
WO2012166520A3 (fr) Système de fluide hydraulique
GB2474212A (en) Downhole piezoelectric devices
IN2015DN02835A (fr)
WO2012166225A3 (fr) Système de commande hydraulique présentant une stratégie en cas de blocage des vérins
WO2010111395A3 (fr) Système de commande hydraulique pour systèmes de forage
GB2500843A (en) BOP stack with a universal intervention interface
WO2011119652A3 (fr) Système de combustible comprenant une pompe électrique multifonction
WO2011151554A3 (fr) Compresseur frigorifique à spirales
HK1213626A1 (zh) 用於太阳能发电系统的多储热单元系统、流体流动控制装置和低压太阳能接收器、以及其相关部件和用途
WO2013003050A3 (fr) Système de commande hydraulique comprenant un kit de récupération d'énergie
WO2015148853A3 (fr) Système de turbine hydraulique doté d'ajutages auxiliaires
IN2012DN03395A (fr)
WO2013003224A3 (fr) Système de commande hydraulique ayant une décharge de pression variable
WO2012091942A8 (fr) Agencement permettant d'augmenter le débit dans le carter en vue de refroidir des motopompes électriques à vitesse variable
NO343487B1 (no) Flertrinns trykkutjevningsventilenhet for brønnsikringsventiler
MX343727B (es) Montaje de valvula de circulacion de fluido para dispensador de fluido.
WO2009029925A3 (fr) Systeme hydraulique de regulation de debit
WO2010128399A3 (fr) Circuit microfluidique a faible volume mort et procedes
WO2012097010A3 (fr) Insert récupérable sous-marin doté d'un clapet de réglage et d'un clapet de non-retour
WO2013036355A3 (fr) Système hydraulique sans mesureur muni d'une vanne de commande de déplacement
WO2011042105A3 (fr) Pompe volumétrique rotative à palettes

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11845247

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 112011103974

Country of ref document: DE

Ref document number: 1120111039743

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11845247

Country of ref document: EP

Kind code of ref document: A2