GB856144A - Servo valve with pressure repeating power amplification - Google Patents

Servo valve with pressure repeating power amplification

Info

Publication number
GB856144A
GB856144A GB4753/57A GB475357A GB856144A GB 856144 A GB856144 A GB 856144A GB 4753/57 A GB4753/57 A GB 4753/57A GB 475357 A GB475357 A GB 475357A GB 856144 A GB856144 A GB 856144A
Authority
GB
United Kingdom
Prior art keywords
pressure
nozzles
spool
valve
valve member
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
GB4753/57A
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.)
MOOG SERVOCONTROLS Inc
Original Assignee
MOOG SERVOCONTROLS Inc
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 MOOG SERVOCONTROLS Inc filed Critical MOOG SERVOCONTROLS Inc
Publication of GB856144A publication Critical patent/GB856144A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C3/00—Circuit elements having moving parts
    • F15C3/10—Circuit elements having moving parts using nozzles or jet pipes
    • F15C3/14—Circuit elements having moving parts using nozzles or jet pipes the jet the nozzle being intercepted by a flap
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0438—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being of the nozzle-flapper type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2278—Pressure modulating relays or followers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/8659—Variable orifice-type modulator
    • Y10T137/86598—Opposed orifices; interposed modulator

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Servomotors (AREA)

Abstract

856,144. Fluid-pressure servomotor control systems. MOOG SERVOCONTROLS Inc., [formerly MOOG VALVE CO. Inc.]. Feb. 12, 1957 [Feb. 13, 1956], No. 4753/57. Class 135. A valve suitable for controlling an hydraulic servomotor 20 comprises a spool 21 under the control of a first hydraulic arrangement which responds to a control input and produces an output pressure differential to which a second hydraulic arrangement responds to apply an equivalent differential to the ends of the spool. The first hydraulic arrangement, in the embodiment described, consists of a movable flapper 33 coacting with a pair of nozzles 34, 35 and mounted in a flexible tube 37 for operation by electromagnetic input means 31, any deflection of the flapper from a neutral position resulting in a change of hydraulic pressure on the upstream side of the nozzles. The nozzles are connected through conduits 38, 39 and restrictions 41 with a conduit 40 leading from a pressure supply connection 15, and conduits 48, 48a lead from the conduits 38, 39 between the restrictions and the nozzles to chambers in the second hydraulic arrangement which consists of a pair of valve members 47. Each of these valve members consists of a pair of lands controlling ports 49, 50 and an intermediate, reduced portion connected by a passage 56 with a chamber at the end of the valve member remote from the connection with the corresponding nozzle. Each port 50 leads to a drain connection 16 and each port 49 leads to the pressure supply 15. The main spool 21 is centralized by springs 25 one of which is adjustable by a screw 26. When the flapper 33 is deflected the pressure on the upstream side of one of the nozzles increases to move the corresponding valve member 47 outwardly whilst the pressure on the upstream side of the other nozzle is reduced to cause the corresponding valve member 47 to move inwardly. The valve member 47 that moves outwardly connects a corresponding chamber 27 at one end of the spool 21 with pressure fluid through the port 49 and a passage 53 whilst the other valve member 47 connects a chamber at the other end of the spool 21 to drain. The changes in pressures in the chambers 27 are transmitted through the passages 56 to chambers at the outer ends of the valve members 47 whereby these members are returned to their neutral positions when the pressures in the chambers 27 correspond with those on the upstream sides of the nozzles 34, 35 resulting in the spool 21 being deflected by an amount related to the value of the electrical signal fed into the input means 31. Specification 854,287 is referred to.
GB4753/57A 1956-02-13 1957-02-12 Servo valve with pressure repeating power amplification Expired GB856144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US564985A US2931343A (en) 1956-02-13 1956-02-13 Electro-hydraulic servo valve with pressure repeating power amplification

Publications (1)

Publication Number Publication Date
GB856144A true GB856144A (en) 1960-12-14

Family

ID=24256726

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4753/57A Expired GB856144A (en) 1956-02-13 1957-02-12 Servo valve with pressure repeating power amplification

Country Status (2)

Country Link
US (1) US2931343A (en)
GB (1) GB856144A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136161A (en) * 1983-02-28 1984-09-12 Sundstrand Corp Two member boost stage valve for a hydraulic control

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972338A (en) * 1956-12-14 1961-02-21 Westinghouse Electric Corp Pressure derivative feedback valve
US3095906A (en) * 1959-03-05 1963-07-02 Moog Servocontrols Inc Flow control servo valve with dynamic load pressure feedback
US3326088A (en) * 1963-09-05 1967-06-20 Sanders Associates Inc Hydraulic servo control systems
US3386339A (en) * 1965-06-07 1968-06-04 Gen Dynamics Corp Hydraulic amplifier
GB1206430A (en) * 1966-10-31 1970-09-23 Weston Hydraulics Ltd Electro-hydraulic servo valve
US3766935A (en) * 1971-12-10 1973-10-23 Clippard Instr Labor Inc Valve with modular manifold body
US4212323A (en) * 1977-08-18 1980-07-15 Tomco, Inc. Power assist proportional remote controller
US4252651A (en) * 1979-08-29 1981-02-24 Baxter Travenol Laboratories, Inc. Negative pressure valving system and transmembrane pressure alarm system
US4567813A (en) * 1982-05-06 1986-02-04 Moog Inc. Pressure equalization of multiple valves
US5443089A (en) * 1994-03-23 1995-08-22 Moog Inc. Hydraulic amplifiers with reduced leakage at null
WO2015200295A1 (en) 2014-06-23 2015-12-30 Parker-Hannifin Corporation Oil exchange in hydraulically operated and electro-hydraulically operated hydraulic valves
EP3628904B1 (en) * 2018-09-26 2022-04-27 Hamilton Sundstrand Corporation Jet-flapper servo valve

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US410181A (en) * 1889-09-03 Elevator
US1411348A (en) * 1919-08-23 1922-04-04 Haeberlein Max Automatic shutdown device for pressure governors
DE680141C (en) * 1937-10-12 1939-08-23 Askania Werke Akt Ges Device on pressure medium force switches
FR893211A (en) * 1942-12-21 1944-06-02 Soc Fr Regulateurs Arca Hydrodynamic or pneumatic relay with paddle and nozzle movable relative to each other
GB730965A (en) * 1952-04-03 1955-06-01 British Messier Ltd Improvements in or relating to control valve devices
US2702529A (en) * 1952-04-23 1955-02-22 Gen Motors Corp Valve adapted for hydraulic power steering uses
US2832318A (en) * 1952-04-30 1958-04-29 Ex Cell O Corp Servo control unit
US2709421A (en) * 1952-07-29 1955-05-31 Gen Electric Hydraulic amplifier
US2737973A (en) * 1952-12-16 1956-03-13 Garman O Kimmell Liquid level control system
US2767689A (en) * 1953-05-22 1956-10-23 Cornell Aeronautical Labor Inc Electrohydraulic servo valve
US2738772A (en) * 1954-07-21 1956-03-20 Lockheed Aircraft Corp Automatic pilot-hydraulic booster system
US2880708A (en) * 1954-11-22 1959-04-07 Sanders Associates Inc Balanced pressure-regulating hydraulic servo valve
US2797666A (en) * 1955-06-29 1957-07-02 John G Chubbuck Pulse proportioning dual integrating servomechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136161A (en) * 1983-02-28 1984-09-12 Sundstrand Corp Two member boost stage valve for a hydraulic control
US4537220A (en) * 1983-02-28 1985-08-27 Sundstrand Corporation Two member boost stage valve for a hydraulic control

Also Published As

Publication number Publication date
US2931343A (en) 1960-04-05

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