GB1427105A - Feeding fluid under pressure - Google Patents

Feeding fluid under pressure

Info

Publication number
GB1427105A
GB1427105A GB1755974A GB1755974A GB1427105A GB 1427105 A GB1427105 A GB 1427105A GB 1755974 A GB1755974 A GB 1755974A GB 1755974 A GB1755974 A GB 1755974A GB 1427105 A GB1427105 A GB 1427105A
Authority
GB
United Kingdom
Prior art keywords
pump
piston
valve
outlet
supplying
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
GB1755974A
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 GB1427105A publication Critical patent/GB1427105A/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

1427105 Valves POCLAIN 22 April 1974 [28 May 1973] 17559/74 Heading F2V [Also in Division F1] A constant delivery pump 1, Fig. 1, supplying a priority circuit 28 and a variable delivery pump 2, supplying a circuit 14, have their combined power requirements maintained within the available power of a common drive motor 3 by a valve 29 and a regulator 16 which control the output of the pump 2. The valve 29 has a spring-loaded piston 31 with a groove 43 which connects inlet and outlet orifices 40, 53, and a bore 42 which connects inlet 40 with outlet 41. If the load on pump 2 begins to rise to an unacceptable value, the increase in pressure is transmitted through a line 36 to valve 29 where it depresses the piston 31. Because the length of the constricted groove 43 is shortened as the piston 31 descends, a higher pressure is transmitted from the outlet 41 to a piston 45 through a line 50. This raises a rod 18 against springs 25 and decreases the output of the pump 2.
GB1755974A 1973-05-28 1974-04-22 Feeding fluid under pressure Expired GB1427105A (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
GB1427105A true GB1427105A (en) 1976-03-10

Family

ID=9120096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1755974A Expired GB1427105A (en) 1973-05-28 1974-04-22 Feeding fluid under pressure

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
EP0127027B1 (en) * 1983-05-30 1988-03-09 BBC Brown Boveri AG 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
US3897174A (en) 1975-07-29
DE2419529A1 (en) 1974-12-19
IT1011824B (en) 1977-02-10
JPS5021188A (en) 1975-03-06
BE815563A (en) 1974-09-16
ES426713A1 (en) 1976-08-01
FR2232226A5 (en) 1974-12-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee