US3922854A - Hydraulic installation with energy storing means - Google Patents

Hydraulic installation with energy storing means Download PDF

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Publication number
US3922854A
US3922854A US535820A US53582074A US3922854A US 3922854 A US3922854 A US 3922854A US 535820 A US535820 A US 535820A US 53582074 A US53582074 A US 53582074A US 3922854 A US3922854 A US 3922854A
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US
United States
Prior art keywords
conduit
accumulator
distributor
auxiliary pump
receiver
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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.)
Expired - Lifetime
Application number
US535820A
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English (en)
Inventor
Yves G Coeurderoy
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Poclain SA
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Poclain SA
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Publication date
Application filed by Poclain SA filed Critical Poclain SA
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Publication of US3922854A publication Critical patent/US3922854A/en
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    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators

Definitions

  • ABSTRACT This invention relates to a hydraulic installation in which means are provided for storing energy when operating at low power and for restoring this energy for work at high power.
  • an auxiliary pump keyed to the driven shaft of a motor driving a group of main pumps discharges into an accumulator.
  • a first distributor may interrupt this flow and direct it towards a tank; a conduit connects the accumulator to the receiver conduit connected to the main pumps.
  • a second distributor may interrupt this conduit.
  • a pressure sensor is connected to the input of a logic unit whose outputs are connected to the control elements of the distributors. This logic unit controls the position of the distributors as a function of the pressure detected in the conduit.
  • the present invention relates to a hydraulic installation in which means are provided for storing energy when the power used by the receiver apparatus is less than the installed capacity, and for restoring this energy as a supplement to the fully employed installed capacity for work where high power is required.
  • the invention proposes to use at least a part of the installed capacity which is not devoted to the main task in the work of the first type mentioned above, to store it and restore it when work of the second typehas to be carried out.
  • a hydraulic installation comprising a motor driving at least one so-called main pump and at least one so-called auxiliary pump, the main pump discharging into at least one receiver and the delivery pipe of the auxiliary pump being con nected to a pressure accumulator.
  • a first two-way distributor disposed in the delivery conduit of the auxiliary pump which ensures communication of said auxiliary pump, in its first position, with the accumulator and, in its second position, with a tank; between said first distributor and the accumulator there is tapped a pipe connected to the feed conduit of the receiver and provided with a second two-way distributor ensuring, in its first position the closure of said pipe and, in its second position, the opening thereof, whilst a fluid pressure sensor is disposed in the feed conduit of the receiver and controls, via a logic device, the selection of the positions of the first and second distributors.
  • FIG. 1 is a diagram of a hydraulic installation according to the invention.
  • FIG. 2 is a graph showing a possible development of the power as a function of the pressure in a hydraulic installation according to the invention.
  • a motor 1 is shown on the driven shaft 2 on which are keyed, on the one hand, a group of n main pumps (1 n and, on the other hand, a group of auxiliary pumps of which only one has been shown, at 3, to facilitate understanding of the invention.
  • the main pumps n are in communication via their inlet conduit (2 n with a tank 4 and via their exhaust conduit a n with a pipe 5 for feeding a receiver member 6.
  • An intermediate member 7 is provided at the junction of pipe 5 with each of conduits a 11 in order to ensure, in known manner, the correct, selective communication of these conduits with said pipe.
  • the auxiliary pump 3 is connected via its inlet conduit 3a to tank 4 and via its exhaust conduit 3b to a pressure accumulator 8.
  • a two-way distributor is interposed in the exhaust conduit 312 between the pump 3 and the accumulator 8. In its first position, said distributor establishes the communication between the accumulator 8 and pump 3, whilst its second position establishes communication between conduit 3b and tank 4, whilst isolating accumulator 8.
  • This conduit 10 comprises a non-return valve 10a and a two-position, one-way distributor 11, ensuring, in its first position, the opening of conduit 10 and, in its second posi-' tion, the closure thereof.
  • a pressure sensor 12 is disposed in conduit 5 and is connected to the input of a logic unit 13 whose outputs are respectively connected to the control element 9a of the distributor 9 and to the control element 11a of the distributor 1 1.
  • FIG. 2 is a graph showing the curves of variation of the power used as a function of the pressure demanded, for various flows obtained by grouping several main pumps together.
  • the Y-axis shows a power scale W and X-axis a pressure scale p.
  • the different flows Q1, Q2, Q3 that may be obtained are shown in this graph by straight lines in view of the ratioW pQ in which Q may take several fixed values Q Q Q Wo represents the installed capacity of the machine. It corresponds'to the maxium useful power furnished by the motor driving the pumps.
  • This graph clearly shows that it is sought always to operate as close as possible to the maximum installed capacity.
  • the flow Q delivered by the main pumps is high.
  • the attained pressure I is such that P Q Wo
  • flow O is less'than Q so as not'to overload the motor.
  • the use of the maximum installed capacity is only punctual, corresponding to products Q p Q X 13 Q X p In all the intervals between these points, one always falls short of the maximum power.
  • the invention seeks to use the available power to a maximum.
  • zone A of the graph of FIG. 2 it is seen that, as long as pressure p in the receiver circuit has not been reached, operation is not carried out at maximum power.
  • the value of the flow Q could be increased so that, by straightening up the inclined straight line by which it is represented, this zone A is reduced.
  • one should expect a considerable loss of load if the flow is too strong and losses by very considerable frictions which constitute a limit higher than the value of this flow Q which guarantees a good yield.
  • the auxiliary pump 3 may furnish a certain known fluid flow to fill the accumulator 8 whose maximum pressure is also known.
  • the power Wa that the auxiliary pump 3 will consume at a maximum is therefore known. This power Wa has been shown on the graph of FIG. 2.
  • the device continues to function in the same way until the straight line of minimum flow has been achieved on the graph.
  • the distributor 9 is in its position where conduit 3b is closed and when the sensor 12 detects the pressure'p the logic unit 13 controls the opening of conduit through distributor 11.
  • Two possibilities may then present themselves: either the accumulator 8 which is adjustably calibrated to a pressure higher than value p is completely filled and the fluid that it contains may flow through the non-return valve l0a towards conduit 5, this bringing the desired addition of power, or the accumulator 8 is not filled up entirely and the fluid that it contains is at too low a pressure to be able to pass through the valve 10a, and nothing happens.
  • the machine must return to phases of operation employing only a power less than Wo Wa in order that the available power can be used for completely filling the accumulator 8.
  • the device according to the invention is therefore capable of storing energy, using all or part of the installed capacity not used by the group of main pumps and of restoring it when the installed capacity is totally employed.
  • This device has the advantage of improving the profitability of a hydraulic installation, particularly of a public works machine audit is in this latter domain that it finds advantageous application.
  • a hydraulic installation comprising a motor driving at least one so-called main pump and at least one ,so-called auxiliary pump, the main pump discharging into at least one receiver and the delivery conduit of the auxiliary pump being connected to a pressure accumulator, wherein a first two-way distributor disposed in the delivery conduit of the auxiliary pump ensures communication of said auxiliary pump, in its first position, with the accumulator, and in its second position with a tank, and wherein between said first distributor and the accumulator there is tapped a pipe connected to the feed conduit of the receiver and provided with a second two-way distributor ensuring, in its first position, the closure of said pipe and, in its second position, the opening thereof, whilst a fluid pressure sensor is disposed in the feed conduit of the receiver and controls, via a logic device, the selection of the positions of the first and second distributors.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Lubricants (AREA)
US535820A 1974-01-14 1974-12-23 Hydraulic installation with energy storing means Expired - Lifetime US3922854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7401175A FR2324899A1 (fr) 1974-01-14 1974-01-14 Installation hydraulique permettant un stockage d'energie aux faibles puissances d'utilisation

Publications (1)

Publication Number Publication Date
US3922854A true US3922854A (en) 1975-12-02

Family

ID=9133447

Family Applications (1)

Application Number Title Priority Date Filing Date
US535820A Expired - Lifetime US3922854A (en) 1974-01-14 1974-12-23 Hydraulic installation with energy storing means

Country Status (9)

Country Link
US (1) US3922854A (OSRAM)
JP (1) JPS50118301A (OSRAM)
BE (1) BE824525A (OSRAM)
BR (1) BR7500168A (OSRAM)
DE (1) DE2500635A1 (OSRAM)
ES (1) ES433797A1 (OSRAM)
FR (1) FR2324899A1 (OSRAM)
GB (1) GB1493161A (OSRAM)
IT (1) IT1026247B (OSRAM)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064694A (en) * 1975-11-06 1977-12-27 Regie Nationale Des Usines Renault Charging an accumulator by a heat engine
US4348943A (en) * 1980-04-28 1982-09-14 Hydroacoustics Inc. Hydraulic press apparatus
US4459084A (en) * 1981-05-26 1984-07-10 Clark Garry E Internal combustion driven pumping system and variable torque transmission
US4541241A (en) * 1982-02-20 1985-09-17 Hartmann & Lammle Gmbh & Co. Kg Hydraulic driving arrangement for reciprocable masses or the like
US4574904A (en) * 1983-02-24 1986-03-11 Fmc Corporation Auxilliary steering system
US4723412A (en) * 1984-03-10 1988-02-09 Itt Industries, Inc. Hydraulic brake system for automotive vehicles
US4838023A (en) * 1986-04-23 1989-06-13 Gesellschaft Fur Hydraulik-Zubehor Mbh Fluid pressure circuit with accumulator charging and safety valve system including check valve bypass
US4953723A (en) * 1989-04-21 1990-09-04 Kabushiki Kaisha Kobe Seiko Sho Apparatus for suppressing quaky movements of mobile cranes
US4995517A (en) * 1989-10-14 1991-02-26 Kabushiki Kaisha Kobe Seiko Sho Mechanism for suppressing vibrations of travelling crane
US5007544A (en) * 1989-09-09 1991-04-16 Kabushiki Kaisha Kobe Seiko Sho Mechanism for suppressing displacement of travelling crane
US5081837A (en) * 1988-04-08 1992-01-21 Diesel Kiki Co., Ltd. Hydraulic control circuit
EP0482248A1 (en) * 1989-04-21 1992-04-29 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Apparatus for suppressing quaky movements of mobile type crane
US5251442A (en) * 1991-10-24 1993-10-12 Roche Engineering Corporation Fluid power regenerator
US5319932A (en) * 1993-04-28 1994-06-14 Roche Engineering Corporation Power sensing regenerator
US5632146A (en) * 1996-01-02 1997-05-27 Apt Incorporated Load shaping compressed air system
US6460332B1 (en) * 1998-11-04 2002-10-08 Komatsu Ltd. Pressure oil energy recover/regenation apparatus
US20030102179A1 (en) * 1997-05-28 2003-06-05 Achten Peter Augustinus Johannes Hydraulic drive system with constant pressure in pressure conduit
US20050072144A1 (en) * 2003-10-02 2005-04-07 Deere & Company, A Delaware Corporation Hydraulic arrangement and process for its use
US20050175442A1 (en) * 2004-02-11 2005-08-11 George Kadlicko Housing for rotary hydraulic machines
US20050172798A1 (en) * 2004-02-11 2005-08-11 George Kadlicko Rotating group of a hydraulic machine
US20050175471A1 (en) * 2004-02-11 2005-08-11 George Kadlicko Piston assembly for rotary hydraulic machines
US20060156713A1 (en) * 2004-12-01 2006-07-20 George Kadlicko Hydraulic drive system
US20070028608A1 (en) * 2004-02-11 2007-02-08 George Kadlicko Rotary hydraulic machine and controls
CN100491748C (zh) * 2007-08-01 2009-05-27 太原理工大学 泵阀复合流量匹配进出油口独立控制电液系统
US20090266067A1 (en) * 2008-04-29 2009-10-29 Parker Hannifin Ab Arrangement for operating a hydraulic device
CN101858366A (zh) * 2010-05-14 2010-10-13 江门市蒙德电气有限公司 伺服电机驱动的组合式油泵
EP2404931A1 (en) 2003-07-02 2012-01-11 Verenium Corporation Glucanases, nucleic acids encoding them and methods for making and using them
US20130199168A1 (en) * 2010-05-20 2013-08-08 National Oilwell Varco Norway As Apparatus and Method for Recuperation of Hydraulic Energy

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57500345A (OSRAM) * 1980-03-26 1982-02-25
DE3013853A1 (de) * 1980-04-10 1981-10-15 Fichtel & Sachs Ag, 8720 Schweinfurt Hydraulikanlage, insbesondere fuer kraftfahrzeuge
GB2158884A (en) * 1984-05-15 1985-11-20 Robert James Siddall Hydraulic drive system
GB2166098B (en) * 1984-10-31 1987-10-28 Trw Cam Gears Ltd Vehicle hydraulic servo system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023579A (en) * 1960-04-28 1962-03-06 Ford Motor Co Fluid pressure system
US3355994A (en) * 1966-01-13 1967-12-05 New York Air Brake Co Hydraulic system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023579A (en) * 1960-04-28 1962-03-06 Ford Motor Co Fluid pressure system
US3355994A (en) * 1966-01-13 1967-12-05 New York Air Brake Co Hydraulic system

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064694A (en) * 1975-11-06 1977-12-27 Regie Nationale Des Usines Renault Charging an accumulator by a heat engine
US4348943A (en) * 1980-04-28 1982-09-14 Hydroacoustics Inc. Hydraulic press apparatus
US4459084A (en) * 1981-05-26 1984-07-10 Clark Garry E Internal combustion driven pumping system and variable torque transmission
US4541241A (en) * 1982-02-20 1985-09-17 Hartmann & Lammle Gmbh & Co. Kg Hydraulic driving arrangement for reciprocable masses or the like
US4574904A (en) * 1983-02-24 1986-03-11 Fmc Corporation Auxilliary steering system
US4723412A (en) * 1984-03-10 1988-02-09 Itt Industries, Inc. Hydraulic brake system for automotive vehicles
US4838023A (en) * 1986-04-23 1989-06-13 Gesellschaft Fur Hydraulik-Zubehor Mbh Fluid pressure circuit with accumulator charging and safety valve system including check valve bypass
US5081837A (en) * 1988-04-08 1992-01-21 Diesel Kiki Co., Ltd. Hydraulic control circuit
EP0482248A1 (en) * 1989-04-21 1992-04-29 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Apparatus for suppressing quaky movements of mobile type crane
US4953723A (en) * 1989-04-21 1990-09-04 Kabushiki Kaisha Kobe Seiko Sho Apparatus for suppressing quaky movements of mobile cranes
US5007544A (en) * 1989-09-09 1991-04-16 Kabushiki Kaisha Kobe Seiko Sho Mechanism for suppressing displacement of travelling crane
EP0482238A1 (en) * 1989-09-09 1992-04-29 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Mechanism for suppressing oscillations of mobile cranes
US4995517A (en) * 1989-10-14 1991-02-26 Kabushiki Kaisha Kobe Seiko Sho Mechanism for suppressing vibrations of travelling crane
EP0482237A1 (en) * 1989-10-14 1992-04-29 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Mechanism for suppressing vibrations of mobile cranes
US5251442A (en) * 1991-10-24 1993-10-12 Roche Engineering Corporation Fluid power regenerator
US5293745A (en) * 1991-10-24 1994-03-15 Roche Engineering Corporation Fluid power regenerator
US5319932A (en) * 1993-04-28 1994-06-14 Roche Engineering Corporation Power sensing regenerator
US5632146A (en) * 1996-01-02 1997-05-27 Apt Incorporated Load shaping compressed air system
US20030102179A1 (en) * 1997-05-28 2003-06-05 Achten Peter Augustinus Johannes Hydraulic drive system with constant pressure in pressure conduit
US6460332B1 (en) * 1998-11-04 2002-10-08 Komatsu Ltd. Pressure oil energy recover/regenation apparatus
EP2409981A1 (en) 2003-07-02 2012-01-25 Verenium Corporation Glucanases, nucleic acids encoding them and methods for making and using them
EP2404928A1 (en) 2003-07-02 2012-01-11 Verenium Corporation Glucanases, nucleic acids encoding them and methods for making and using them
EP2404931A1 (en) 2003-07-02 2012-01-11 Verenium Corporation Glucanases, nucleic acids encoding them and methods for making and using them
EP2404930A1 (en) 2003-07-02 2012-01-11 Verenium Corporation Glucanases, nucleic acids encoding them and methods for making and using them
US20050072144A1 (en) * 2003-10-02 2005-04-07 Deere & Company, A Delaware Corporation Hydraulic arrangement and process for its use
DE10345956A1 (de) * 2003-10-02 2005-04-21 Deere & Co Hydraulische Anordnung und Verfahren für eine solche
US7100371B2 (en) 2003-10-02 2006-09-05 Deere & Company Hydraulic arrangement and process for its use
US20050175471A1 (en) * 2004-02-11 2005-08-11 George Kadlicko Piston assembly for rotary hydraulic machines
US7992484B2 (en) 2004-02-11 2011-08-09 Haldex Hydraulics Corporation Rotary hydraulic machine and controls
US7380490B2 (en) 2004-02-11 2008-06-03 Haldex Hydraulics Corporation Housing for rotary hydraulic machines
US7402027B2 (en) 2004-02-11 2008-07-22 Haldex Hydraulics Corporation Rotating group of a hydraulic machine
US9115770B2 (en) 2004-02-11 2015-08-25 Concentric Rockford Inc. Rotary hydraulic machine and controls
US20050175442A1 (en) * 2004-02-11 2005-08-11 George Kadlicko Housing for rotary hydraulic machines
US7364409B2 (en) 2004-02-11 2008-04-29 Haldex Hydraulics Corporation Piston assembly for rotary hydraulic machines
US20050172798A1 (en) * 2004-02-11 2005-08-11 George Kadlicko Rotating group of a hydraulic machine
US20070028608A1 (en) * 2004-02-11 2007-02-08 George Kadlicko Rotary hydraulic machine and controls
US20090193801A1 (en) * 2004-12-01 2009-08-06 George Kadlicko Hydraulic drive system
US20110061375A1 (en) * 2004-12-01 2011-03-17 George Kadlicko Hydraulic Drive System
US7856817B2 (en) 2004-12-01 2010-12-28 Haldex Hydraulics Corporation Hydraulic drive system
US20060156713A1 (en) * 2004-12-01 2006-07-20 George Kadlicko Hydraulic drive system
US8196397B2 (en) 2004-12-01 2012-06-12 Concentric Rockford, Inc. Hydraulic drive system
US8596055B2 (en) 2004-12-01 2013-12-03 Concentric Rockford Inc. Hydraulic drive system
US7516613B2 (en) 2004-12-01 2009-04-14 Haldex Hydraulics Corporation Hydraulic drive system
CN100491748C (zh) * 2007-08-01 2009-05-27 太原理工大学 泵阀复合流量匹配进出油口独立控制电液系统
US20090266067A1 (en) * 2008-04-29 2009-10-29 Parker Hannifin Ab Arrangement for operating a hydraulic device
US8209975B2 (en) 2008-04-29 2012-07-03 Parker-Hannifin Corporation Arrangement for operating a hydraulic device
CN101858366A (zh) * 2010-05-14 2010-10-13 江门市蒙德电气有限公司 伺服电机驱动的组合式油泵
US20130199168A1 (en) * 2010-05-20 2013-08-08 National Oilwell Varco Norway As Apparatus and Method for Recuperation of Hydraulic Energy
US9382927B2 (en) * 2010-05-20 2016-07-05 National Oilwell Varco Norway As Apparatus and method for recuperation of hydraulic energy

Also Published As

Publication number Publication date
BE824525A (fr) 1975-05-15
GB1493161A (en) 1977-11-23
BR7500168A (pt) 1975-11-04
FR2324899A1 (fr) 1977-04-15
JPS50118301A (OSRAM) 1975-09-17
IT1026247B (it) 1978-09-20
DE2500635A1 (de) 1975-07-17
ES433797A1 (es) 1976-12-01
FR2324899B1 (OSRAM) 1978-02-10

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