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 circuitsInfo
- 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
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.
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)
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)
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 |
-
1973
- 1973-05-28 FR FR7319331A patent/FR2232226A5/fr not_active Expired
-
1974
- 1974-04-22 GB GB1755974A patent/GB1427105A/en not_active Expired
- 1974-04-23 DE DE2419529A patent/DE2419529A1/en not_active Withdrawn
- 1974-04-29 US US464840A patent/US3897174A/en not_active Expired - Lifetime
- 1974-05-03 IT IT68392/74A patent/IT1011824B/en active
- 1974-05-22 JP JP49056764A patent/JPS5021188A/ja active Pending
- 1974-05-27 BE BE144772A patent/BE815563A/en unknown
- 1974-05-28 ES ES426713A patent/ES426713A1/en not_active Expired
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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