GB864361A - Improvements in or relating to hydraulic power systems - Google Patents

Improvements in or relating to hydraulic power systems

Info

Publication number
GB864361A
GB864361A GB28289/58A GB2828958A GB864361A GB 864361 A GB864361 A GB 864361A GB 28289/58 A GB28289/58 A GB 28289/58A GB 2828958 A GB2828958 A GB 2828958A GB 864361 A GB864361 A GB 864361A
Authority
GB
United Kingdom
Prior art keywords
accumulator
pressure
circuit
chamber
supplied
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
GB28289/58A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB864361A publication Critical patent/GB864361A/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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
    • 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
    • F15B1/027—Installations or systems with accumulators having accumulator charging devices
    • F15B1/033—Installations or systems with accumulators having accumulator charging devices with electrical control means
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/50—Monitoring, detection and testing means for accumulators
    • F15B2201/51—Pressure detection
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/50—Monitoring, detection and testing means for accumulators
    • F15B2201/515—Position detection for separating means
    • 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
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • 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
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50554—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure downstream of the pressure control means, e.g. pressure reducing valve
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6651—Control of the prime mover, e.g. control of the output torque or rotational speed

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

864,361. Hydraulic apparatus; accumulators. CRATZMULLER, J. L. Sept. 3, 1958 [Sept. 4, 1957], No. 38289/58. Class 69. (2). [Also in Croup XXXIV] An hydraulic power system suitable for actuating the brakes of a motor car comprises a hydro-pneumatic accumulator 2, Fig. 1, adapted to operate over a wide range of pressure, the minimum of which is at least equal to the pressure to be obtained in a utilization circuit having at least one hydraulic receiver 10, a pump 3 started and stopped by automatic regulating means to load the accumulator with a predetermined amount of pressure liquid, and a pressurereducer 12 interposed between the accumulator and the utilization circuit to maintain the pressure in the circuit substantially constant and independent of the output variations of the accumulator. The accumulator is designed so that it will operate over a wide range of pressure, say 150 kg./cms.<SP>2</SP> to 300 kg./cm.<SP>2</SP>, which allows the system to accommodate changes in temperature from - 30‹ to +90‹ C., and has compressed gas in the left-hand chamber V1 and liquid in the other chamber V0 supplied from the tank 1 and pump 3 which is driven by an electric motor 4 controlled by a pressure-responsive device 6 actuating contacts 7 ; the wide range of pressure is stated to permit the use of a comparatively small volume accumulator and tank. The pressure-reducer 12 is interposed between the accumulator 2 and a distributer 11 controlling the supply to a cylinder 10 in the utilization circuit. In another arrangement, the motor 4 is controlled by a switch 31, Fig. 4, actuated by a cam 16 on the rod 13 of the piston when the volume of liquid in the chamber V0 of the accumulator 2a falls to a predetermined value. If the volume falls to a critical value, an acoustic or visual indicator 42 is operated by the cam actuating a switch 43. The system shown in Fig. 4 may be applied to a motor car braking system in which a circuit 49 leading to the rear brakes is supplied by a distributer 52 from the accumulator 2a, pressure-reducer 12, a non- return valve 47 and an auxiliary accumulator 45, and a circuit 50 leading to the front brakes is similarly supplied. A further circuit 54 for aiding a steering-gear or for controlling a folding hood, windows, or the like, may be supplied through a distributer 41. The accumulator 2a, Fig. 3, comprises a body portion 27 in screw-threaded engagement with a head portion 28, a lip 29 ensuring tightness between the two parts. The rod 13 of the piston 5 passes through a packing ring 23 pressed against the head by a spring 24 engaging an abutment 26 secured between the body and head parts. The chamber V1 is sealed from the chamber V0 by a packing-ring 30 spring- pressed against the piston 5. Specification 735,660 is referred to.
GB28289/58A 1957-09-04 1958-09-03 Improvements in or relating to hydraulic power systems Expired GB864361A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR864361X 1957-09-04

Publications (1)

Publication Number Publication Date
GB864361A true GB864361A (en) 1961-04-06

Family

ID=9343800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28289/58A Expired GB864361A (en) 1957-09-04 1958-09-03 Improvements in or relating to hydraulic power systems

Country Status (1)

Country Link
GB (1) GB864361A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083534A (en) * 1960-06-27 1963-04-02 Adar S A R L Servo mechanism for controlling various members
US3243958A (en) * 1964-02-14 1966-04-05 Erich Herion Master valve unit
EP0425876A2 (en) * 1989-10-28 1991-05-08 Hermann Hemscheidt Maschinenfabrik GmbH &amp; Co. Hydropneumatic piston accumulator
EP0425885A2 (en) * 1989-10-28 1991-05-08 HEMSCHEIDT FAHRWERKTECHNIK GmbH &amp; Co. Hydropneumatic spring system
GB2239051A (en) * 1989-12-14 1991-06-19 Teves Gmbh Alfred Piston-type pressure accumulator and switch for traction slip controlled brake systems

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083534A (en) * 1960-06-27 1963-04-02 Adar S A R L Servo mechanism for controlling various members
US3243958A (en) * 1964-02-14 1966-04-05 Erich Herion Master valve unit
EP0425876A2 (en) * 1989-10-28 1991-05-08 Hermann Hemscheidt Maschinenfabrik GmbH &amp; Co. Hydropneumatic piston accumulator
EP0425885A2 (en) * 1989-10-28 1991-05-08 HEMSCHEIDT FAHRWERKTECHNIK GmbH &amp; Co. Hydropneumatic spring system
EP0425885A3 (en) * 1989-10-28 1991-09-11 Hermann Hemscheidt Maschinenfabrik Gmbh & Co. Hydropneumatic spring system
EP0425876A3 (en) * 1989-10-28 1991-09-11 Hermann Hemscheidt Maschinenfabrik Gmbh & Co. Hydropneumatic piston accumulator
GB2239051A (en) * 1989-12-14 1991-06-19 Teves Gmbh Alfred Piston-type pressure accumulator and switch for traction slip controlled brake systems
GB2239051B (en) * 1989-12-14 1994-04-27 Teves Gmbh Alfred Piston-type pressure accumulator,in particular for traction slip controlled brake systems,and switching arrangement for it

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