EP0857877A3 - Pneumatic-hydraulic converter - Google Patents

Pneumatic-hydraulic converter Download PDF

Info

Publication number
EP0857877A3
EP0857877A3 EP19980101341 EP98101341A EP0857877A3 EP 0857877 A3 EP0857877 A3 EP 0857877A3 EP 19980101341 EP19980101341 EP 19980101341 EP 98101341 A EP98101341 A EP 98101341A EP 0857877 A3 EP0857877 A3 EP 0857877A3
Authority
EP
Grant status
Application
Patent type
Prior art keywords
hydraulic
working chamber
pressure
converter
piston
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.)
Withdrawn
Application number
EP19980101341
Other languages
German (de)
French (fr)
Other versions
EP0857877A2 (en )
Inventor
Jörg Dantlgraber
Heino Försterling
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.)
Mannesmann Rexroth AG
Original Assignee
Mannesmann Rexroth AG
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

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072Combined pneumatic-hydraulic systems
    • F15B11/0725Combined pneumatic-hydraulic systems with the driving energy being derived from a pneumatic system, a subsequent hydraulic system displacing or controlling the output element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01BMACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B11/00Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20507Type of prime mover
    • F15B2211/20515Electric motor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/2053Type of pump
    • F15B2211/20546Type of pump variable capacity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/2053Type of pump
    • F15B2211/20561Type of pump reversible
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/2053Type of pump
    • F15B2211/20569Type of pump capable of working as pump and motor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/214Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being hydrotransformers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/216Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/63Electronic controllers
    • F15B2211/6303Electronic controllers using input signals
    • F15B2211/6306Electronic controllers using input signals representing a pressure
    • F15B2211/6309Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/63Electronic controllers
    • F15B2211/6303Electronic controllers using input signals
    • F15B2211/6306Electronic controllers using input signals representing a pressure
    • F15B2211/6313Electronic controllers using input signals representing a pressure the pressure being a load pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058Rotary output members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/80Other types of control related to particular problems or conditions
    • F15B2211/88Control measures for saving energy

Abstract

Ein pneumatisch-hydraulischer Wandler besitzt als Energiequelle einen Druckbehälter (15), in dem ein Gas gespeichert ist. A pneumatic-hydraulic converter as an energy source has a pressure container (15), in which a gas is stored. In einer ersten Ausführung ist ein Wandlerkolben (10,11) von dem portionsweise in einen an den Wandlerkolben (10,11) angrenzenden Arbeitsraum (13) abgebbaren und sich darin entspannenden Gas verschiebbar, ist von einer Hydropumpe (28,32) ein Hydraulikfluid in eine Druckleitung (34) verdrängbar und sind der Wandlerkolben (10,11) und die Hydropumpe (28,32) nur über mechanische Koppelungsmittel (25,26,27,30,31) miteinander verbunden. In a first embodiment of a converter piston (10,11) is dispensable from the portions adjacent in one of the converter piston (10,11) working space (13) and by the fact relaxing gas displaceable, is of a hydraulic pump (28,32), a hydraulic fluid in displaced a pressure line (34) and the converter piston (10,11) and the hydraulic pump (28,32) are connected together only by mechanical coupling means (25,26,27,30,31). Bei zwei anderen Ausführungen ist anstelle des Wandlerkolbens (10,11) ein Trennkolben (76) vorhanden, der einen ersten Arbeitsraum (79) von einem zweiten Arbeitsraum (72) eines Trennzylinders (73) trennt und der von aus dem Druckbehälter (15) portionsweise in den ersten Arbeitsraum (79) abgebbaren und sich darin entspannenden Gas verschiebbar ist und dabei Hydraulikfluid aus dem zweiten Arbeitsraum (72) verdrängt. In two other embodiments, instead of the converter piston (10,11) a separating piston (76) is provided, which separates a first working chamber (79) from a second working chamber (72) of a separating cylinder (73) and that of the pressure vessel (15) was added portionwise dispensable in the first working chamber (79) and located therein is displaceable relaxing gas and thereby displaces hydraulic fluid from the second working chamber (72). Auch hier ist Hydraulikfluid in eine Druckleitung (34) förderbar, an die ein hydraulischer Verbraucher (84) anschließbar ist. Here, too, the hydraulic fluid is conveyed in a pressure pipe (34) to which a hydraulic consumer (84) can be connected. Alternativ kann zwischen der Druckleitung (34) und dem zweiten Arbeitsraum (72) des Trennzylinders (73) ein hydraulischer Transformator (70) mit einer drehenden Primäreinheit (90) und einer von dieser mechanisch rotativ antreibbaren Sekundäreinheit (91) oder ein Resonator (112) mit wenigstens einer Druckkammer (119) angeordnet sein, die durch ein gegen eine Feder (121) bewegbares Masseteil (120) begrenzt ist und die über eine Ventilanordnung (113,114) zyklisch mit dem zweiten Arbeitsraum (72) des Trennzylinders (73), einer Niederdruckleitung (115) und der Druckleitung (34) verbindbar ist. Alternatively, between the pressure line (34) and the second working chamber (72) of the separating cylinder (73), a hydraulic transformer (70) having a rotating primary unit (90) and one of these mechanically rotationally drivable secondary unit (91) or a resonator (112) be arranged with at least one pressure chamber (119) movable by a counter to a spring (121) part by mass (120) is limited and a valve assembly (113,114) cyclically with the second working chamber (72) of the separating cylinder (73), a low pressure line (115) and the pressure line (34) is connectable.
Solche pneumatich-hydraulischen Wandler sind im Vergleich zu einem elektrischen System mit einer Batterie und einem Elektromotor relativ leicht an Gewicht sowie kostengünstig herzustellen. Such pneumatich-hydraulic converters are inexpensive to produce compared to an electrical system with a battery and an electric motor relatively light in weight as well.
EP19980101341 1997-02-08 1998-01-27 Pneumatic-hydraulic converter Withdrawn EP0857877A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19704822 1997-02-08
DE19704822 1997-02-08

Publications (2)

Publication Number Publication Date
EP0857877A2 true EP0857877A2 (en) 1998-08-12
EP0857877A3 true true EP0857877A3 (en) 1999-02-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980101341 Withdrawn EP0857877A3 (en) 1997-02-08 1998-01-27 Pneumatic-hydraulic converter

Country Status (1)

Country Link
EP (1) EP0857877A3 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7802426B2 (en) 2008-06-09 2010-09-28 Sustainx, Inc. System and method for rapid isothermal gas expansion and compression for energy storage
US7832207B2 (en) 2008-04-09 2010-11-16 Sustainx, Inc. Systems and methods for energy storage and recovery using compressed gas
US7958731B2 (en) 2009-01-20 2011-06-14 Sustainx, Inc. Systems and methods for combined thermal and compressed gas energy conversion systems
US8037678B2 (en) 2009-09-11 2011-10-18 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
US8117842B2 (en) 2009-11-03 2012-02-21 Sustainx, Inc. Systems and methods for compressed-gas energy storage using coupled cylinder assemblies
US8191362B2 (en) 2010-04-08 2012-06-05 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8225606B2 (en) 2008-04-09 2012-07-24 Sustainx, Inc. Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression
US8250863B2 (en) 2008-04-09 2012-08-28 Sustainx, Inc. Heat exchange with compressed gas in energy-storage systems
US8448433B2 (en) 2008-04-09 2013-05-28 Sustainx, Inc. Systems and methods for energy storage and recovery using gas expansion and compression
US8474255B2 (en) 2008-04-09 2013-07-02 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8479505B2 (en) 2008-04-09 2013-07-09 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8479502B2 (en) 2009-06-04 2013-07-09 Sustainx, Inc. Increased power in compressed-gas energy storage and recovery
US8539763B2 (en) 2011-05-17 2013-09-24 Sustainx, Inc. Systems and methods for efficient two-phase heat transfer in compressed-air energy storage systems
US8578708B2 (en) 2010-11-30 2013-11-12 Sustainx, Inc. Fluid-flow control in energy storage and recovery systems
US8661808B2 (en) 2010-04-08 2014-03-04 Sustainx, Inc. High-efficiency heat exchange in compressed-gas energy storage systems
US8733095B2 (en) 2008-04-09 2014-05-27 Sustainx, Inc. Systems and methods for efficient pumping of high-pressure fluids for energy

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19903907A1 (en) * 1999-02-01 2000-08-03 Mannesmann Rexroth Ag Hydraulic load drive method, for a fork-lift truck , involves using free piston engine connected in parallel with pneumatic-hydraulic converter so load can be optionally driven by converter and/or engine
EP1985866A1 (en) * 2007-04-26 2008-10-29 Services Pétroliers Schlumberger A rotary distributor for pressure multiplier
DE102007021063A1 (en) 2007-05-04 2008-11-06 Robert Bosch Gmbh Hydro-pneumatic drive
US8240140B2 (en) 2008-04-09 2012-08-14 Sustainx, Inc. High-efficiency energy-conversion based on fluid expansion and compression
US8677744B2 (en) 2008-04-09 2014-03-25 SustaioX, Inc. Fluid circulation in energy storage and recovery systems
US20100307156A1 (en) 2009-06-04 2010-12-09 Bollinger Benjamin R Systems and Methods for Improving Drivetrain Efficiency for Compressed Gas Energy Storage and Recovery Systems
US8234863B2 (en) 2010-05-14 2012-08-07 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8495872B2 (en) 2010-08-20 2013-07-30 Sustainx, Inc. Energy storage and recovery utilizing low-pressure thermal conditioning for heat exchange with high-pressure gas
US20130091834A1 (en) 2011-10-14 2013-04-18 Sustainx, Inc. Dead-volume management in compressed-gas energy storage and recovery systems
US20170067454A1 (en) * 2014-02-23 2017-03-09 Isocurrent Energy Incorporated Compressed air energy storage system

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US2261752A (en) * 1940-01-24 1941-11-04 Nolan W Buckner Fluid pressure motor
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FR1261313A (en) * 1960-04-05 1961-05-19 Rech Etudes Production Sarl energy converter consisting of a pneumatic motor and a hydraulic pump
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US2622530A (en) * 1947-06-05 1952-12-23 Goodrich Co B F Debooster
FR1261313A (en) * 1960-04-05 1961-05-19 Rech Etudes Production Sarl energy converter consisting of a pneumatic motor and a hydraulic pump
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US4347701A (en) * 1980-04-03 1982-09-07 Tokyo Electric Co., Ltd. Power system for land vehicles
DE3503266A1 (en) * 1985-01-31 1986-08-07 Horst Boehnlein Method and device for the reduction of pollutant exhaust emissions from motor vehicles
DE4337991A1 (en) * 1993-10-02 1995-04-06 Eduard Lemacher Hydropneumatic drive system
WO1997010444A1 (en) * 1995-09-12 1997-03-20 Mannesmann Rexroth Ag Hydrostatic drive control device

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8448433B2 (en) 2008-04-09 2013-05-28 Sustainx, Inc. Systems and methods for energy storage and recovery using gas expansion and compression
US7832207B2 (en) 2008-04-09 2010-11-16 Sustainx, Inc. Systems and methods for energy storage and recovery using compressed gas
US7900444B1 (en) 2008-04-09 2011-03-08 Sustainx, Inc. Systems and methods for energy storage and recovery using compressed gas
US8733095B2 (en) 2008-04-09 2014-05-27 Sustainx, Inc. Systems and methods for efficient pumping of high-pressure fluids for energy
US8733094B2 (en) 2008-04-09 2014-05-27 Sustainx, Inc. Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression
US8713929B2 (en) 2008-04-09 2014-05-06 Sustainx, Inc. Systems and methods for energy storage and recovery using compressed gas
US8627658B2 (en) 2008-04-09 2014-01-14 Sustainx, Inc. Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression
US8479505B2 (en) 2008-04-09 2013-07-09 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8209974B2 (en) 2008-04-09 2012-07-03 Sustainx, Inc. Systems and methods for energy storage and recovery using compressed gas
US8225606B2 (en) 2008-04-09 2012-07-24 Sustainx, Inc. Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression
US8474255B2 (en) 2008-04-09 2013-07-02 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8250863B2 (en) 2008-04-09 2012-08-28 Sustainx, Inc. Heat exchange with compressed gas in energy-storage systems
US8763390B2 (en) 2008-04-09 2014-07-01 Sustainx, Inc. Heat exchange with compressed gas in energy-storage systems
US8240146B1 (en) 2008-06-09 2012-08-14 Sustainx, Inc. System and method for rapid isothermal gas expansion and compression for energy storage
US7802426B2 (en) 2008-06-09 2010-09-28 Sustainx, Inc. System and method for rapid isothermal gas expansion and compression for energy storage
US7958731B2 (en) 2009-01-20 2011-06-14 Sustainx, Inc. Systems and methods for combined thermal and compressed gas energy conversion systems
US8479502B2 (en) 2009-06-04 2013-07-09 Sustainx, Inc. Increased power in compressed-gas energy storage and recovery
US8468815B2 (en) 2009-09-11 2013-06-25 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
US8109085B2 (en) 2009-09-11 2012-02-07 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
US8037678B2 (en) 2009-09-11 2011-10-18 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
US8117842B2 (en) 2009-11-03 2012-02-21 Sustainx, Inc. Systems and methods for compressed-gas energy storage using coupled cylinder assemblies
US8661808B2 (en) 2010-04-08 2014-03-04 Sustainx, Inc. High-efficiency heat exchange in compressed-gas energy storage systems
US8191362B2 (en) 2010-04-08 2012-06-05 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8578708B2 (en) 2010-11-30 2013-11-12 Sustainx, Inc. Fluid-flow control in energy storage and recovery systems
US8539763B2 (en) 2011-05-17 2013-09-24 Sustainx, Inc. Systems and methods for efficient two-phase heat transfer in compressed-air energy storage systems

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