IT1031166B - Servovalvola a bloccaggio in cas di guasto - Google Patents

Servovalvola a bloccaggio in cas di guasto

Info

Publication number
IT1031166B
IT1031166B IT19604/75A IT1960475A IT1031166B IT 1031166 B IT1031166 B IT 1031166B IT 19604/75 A IT19604/75 A IT 19604/75A IT 1960475 A IT1960475 A IT 1960475A IT 1031166 B IT1031166 B IT 1031166B
Authority
IT
Italy
Prior art keywords
failure
case
servo valve
lock servo
lock
Prior art date
Application number
IT19604/75A
Other languages
English (en)
Italian (it)
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Application granted granted Critical
Publication of IT1031166B publication Critical patent/IT1031166B/it

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
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/127—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action with step-by-step action
    • F15B11/128—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action with step-by-step action by means of actuators of the standard type with special circuit controlling 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
    • 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
    • F15B13/0436—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 steerable jet 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
    • Y10T137/8593—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
    • 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
    • Y10T137/8667—Reciprocating valve
    • Y10T137/86694—Piston valve
    • Y10T137/86702—With internal flow passage
IT19604/75A 1974-01-29 1975-01-27 Servovalvola a bloccaggio in cas di guasto IT1031166B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US437667*A US3922955A (en) 1974-01-29 1974-01-29 Fail-fixed servovalve

Publications (1)

Publication Number Publication Date
IT1031166B true IT1031166B (it) 1979-04-30

Family

ID=23737390

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19604/75A IT1031166B (it) 1974-01-29 1975-01-27 Servovalvola a bloccaggio in cas di guasto

Country Status (7)

Country Link
US (1) US3922955A (fr)
JP (1) JPS604364B2 (fr)
BE (1) BE824920A (fr)
DE (1) DE2503067A1 (fr)
FR (1) FR2259263B1 (fr)
GB (1) GB1489321A (fr)
IT (1) IT1031166B (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103592A (en) * 1975-12-19 1978-08-01 General Electric Company Valve operator
US4220074A (en) * 1977-05-25 1980-09-02 Vapor Corporation Switching valve
US4137707A (en) * 1977-07-22 1979-02-06 General Electric Company Integrated control system for a gas turbine engine
US4227443A (en) * 1978-09-25 1980-10-14 General Electric Company Fail-fixed servovalve
US4276809A (en) * 1979-04-23 1981-07-07 General Electric Company Simplified fail-fixed servovalve
US4375780A (en) * 1980-01-28 1983-03-08 General Electric Company Fail-fixed electrohydraulic servosystem
IT1140467B (it) * 1981-10-27 1986-09-24 Giorgio Cafarelli Valvola ad ugello oscillante
US4510848A (en) * 1982-09-30 1985-04-16 General Electric Company Shear-type fail-fixed servovalve
US4827981A (en) * 1988-01-25 1989-05-09 Moog Inc. Fail-fixed servovalve with controlled hard-over leakage
US5622095A (en) * 1995-06-28 1997-04-22 Foster; Raymond K. Hydraulic drive and control system
US5735122A (en) * 1996-11-29 1998-04-07 United Technologies Corporation Actuator with failfixed zero drift
US6554014B2 (en) * 2000-10-13 2003-04-29 Hydraforce, Inc. Proportional pilot operated directional valve
FR2818331B1 (fr) 2000-12-19 2003-03-14 Snecma Moteurs Servo-valve a memoire de position
US7455074B2 (en) * 2005-07-28 2008-11-25 Honeywell International Inc. Latchable electrohydraulic servovalve
FR2914030B1 (fr) * 2007-03-21 2009-07-03 Hispano Suiza Sa Dispositif de commande de position d'un actionneur par une servovalve a memoire de position en cas de panne
DE102007058518A1 (de) * 2007-12-05 2009-06-18 Abb Ag Verfahren zum Betrieb eines Stellungsreglers
US9217376B2 (en) * 2008-11-13 2015-12-22 Sikorsky Aircraft Corporation Multi-mode adaptive fail-fixed system for FADEC controlled gas turbine engines
FR2981133B1 (fr) * 2011-10-10 2013-10-25 In Lhc Procede de detection de defaillance d'une servovalve et servovalve faisant application.
EP3431780B1 (fr) * 2017-07-20 2020-04-15 Hamilton Sundstrand Corporation Servo-soupape
JP7028760B2 (ja) * 2018-12-28 2022-03-02 Ckd株式会社 スプール弁
US11391301B2 (en) * 2020-04-14 2022-07-19 Honeywell International Inc. Electrohydraulic poppet valve device control that maintains the last commanded position of a device upon power interruption and provides back-up position control

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796851A (en) * 1954-03-30 1957-06-25 Int Harvester Co Valve operating mechanism for hydraulic steering systems
US3028880A (en) * 1960-04-05 1962-04-10 Sperry Rand Corp Fluid flow control valve
US3282283A (en) * 1963-12-23 1966-11-01 Gocko Regulator Co Ltd Hydraulic regulating system and apparatus
US3472278A (en) * 1966-10-27 1969-10-14 Henriksen & Henriksen I S Slide valve for opening and closing at least one passage for a flowing medium and an apparatus comprising at least one such slide valve
US3528446A (en) * 1968-02-27 1970-09-15 Sperry Rand Corp Servo valve with resiliently mounted jet pipe
DE2161923A1 (de) * 1971-12-14 1973-06-20 Bosch Gmbh Robert Elektrohydraulische steuereinrichtung

Also Published As

Publication number Publication date
FR2259263B1 (fr) 1980-11-07
JPS604364B2 (ja) 1985-02-04
DE2503067A1 (de) 1975-07-31
US3922955A (en) 1975-12-02
BE824920A (fr) 1975-05-15
FR2259263A1 (fr) 1975-08-22
JPS50107387A (fr) 1975-08-23
DE2503067C2 (fr) 1989-09-28
GB1489321A (en) 1977-10-19

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