ES426713A1 - Devices for feeding fluid under pressure to at least two load circuits - Google Patents

Devices for feeding fluid under pressure to at least two load circuits

Info

Publication number
ES426713A1
ES426713A1 ES426713A ES426713A ES426713A1 ES 426713 A1 ES426713 A1 ES 426713A1 ES 426713 A ES426713 A ES 426713A ES 426713 A ES426713 A ES 426713A ES 426713 A1 ES426713 A1 ES 426713A1
Authority
ES
Spain
Prior art keywords
group
pumps
under pressure
fluid under
load circuits
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.)
Expired
Application number
ES426713A
Other languages
Spanish (es)
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.)
Poclain SA
Original Assignee
Poclain SA
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 Poclain SA filed Critical Poclain SA
Publication of ES426713A1 publication Critical patent/ES426713A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
    • 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
    • F04B49/08—Regulating by delivery pressure
    • 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
    • F15B2211/20546—Type of pump variable capacity
    • 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
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/26—Power control functions
    • 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
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

In a device for feeding fluid under pressure to at least two load circuits, of which one has priority, the power required to drive a group of constant flow pumps connected to the priority load circuit is subtracted from the power of the motor driving this group of pumps and a second group of variable flow pumps connected to the non-priority load, the difference in the powers being used for the second group of variable flow pumps, the subtraction being effected by a valve coupled in a pipe connecting the delivery pipe from the constant flow group of pumps and an inlet chamber of a regulator of the group of variable flow pumps, the valve providing a variable fluid constriction which is varied in dependence on the pressure in the delivery pipe of the group of variable flow pumps.
ES426713A 1973-05-28 1974-05-28 Devices for feeding fluid under pressure to at least two load circuits Expired ES426713A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7319331A FR2232226A5 (en) 1973-05-28 1973-05-28

Publications (1)

Publication Number Publication Date
ES426713A1 true ES426713A1 (en) 1976-08-01

Family

ID=9120096

Family Applications (1)

Application Number Title Priority Date Filing Date
ES426713A Expired ES426713A1 (en) 1973-05-28 1974-05-28 Devices for feeding fluid under pressure to at least two load circuits

Country Status (8)

Country Link
US (1) US3897174A (en)
JP (1) JPS5021188A (en)
BE (1) BE815563A (en)
DE (1) DE2419529A1 (en)
ES (1) ES426713A1 (en)
FR (1) FR2232226A5 (en)
GB (1) GB1427105A (en)
IT (1) IT1011824B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2271416B1 (en) * 1974-05-15 1983-08-19 Poclain Sa
US3962870A (en) * 1975-04-23 1976-06-15 International Harvester Company Variable volume dual pump circuit
DE2603563C2 (en) * 1976-01-30 1986-02-20 Linde Ag, 6200 Wiesbaden Control device for a pump unit consisting of at least two pumps
US4212596A (en) * 1978-02-23 1980-07-15 Caterpillar Tractor Co. Pressurized fluid supply system
DE3469777D1 (en) * 1983-05-30 1988-04-14 Bbc Brown Boveri & Cie Electro-hydraulic actuator for turbine valves
DE3323278C2 (en) * 1983-06-28 1986-05-22 Hydromatik GmbH, 7915 Elchingen Control device for several drive units consisting of hydrostatic gears
US4613286A (en) * 1984-12-31 1986-09-23 Kabushiki Kaisha Komatsu Seisakusho Constant torque control system for a variable displacement pump or pumps
US20070217856A1 (en) * 2006-03-20 2007-09-20 Kott John M Portable paint system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316926A (en) * 1941-03-11 1943-04-20 Vickers Inc Power transmission
US3355994A (en) * 1966-01-13 1967-12-05 New York Air Brake Co Hydraulic system
US3561327A (en) * 1969-06-09 1971-02-09 Eaton Yale & Towne Flow divider and flow-dividing system
US3575000A (en) * 1969-10-21 1971-04-13 Caterpillar Tractor Co High pressure implement hydraulic circuit
DE2038968C3 (en) * 1970-08-05 1978-09-07 Ludwig 7917 Voehringen Wagenseil Capacity control device for two or more hydraulic pumps

Also Published As

Publication number Publication date
IT1011824B (en) 1977-02-10
US3897174A (en) 1975-07-29
GB1427105A (en) 1976-03-10
FR2232226A5 (en) 1974-12-27
BE815563A (en) 1974-09-16
DE2419529A1 (en) 1974-12-19
JPS5021188A (en) 1975-03-06

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