GB850374A - Fluid pressure operated apparatus to position an actuator rod - Google Patents

Fluid pressure operated apparatus to position an actuator rod

Info

Publication number
GB850374A
GB850374A GB36771/56A GB3677156A GB850374A GB 850374 A GB850374 A GB 850374A GB 36771/56 A GB36771/56 A GB 36771/56A GB 3677156 A GB3677156 A GB 3677156A GB 850374 A GB850374 A GB 850374A
Authority
GB
United Kingdom
Prior art keywords
pressure
diaphragm
fluid
actuator rod
chamber
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
GB36771/56A
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.)
Garrett Corp
Original Assignee
Garrett Corp
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 Garrett Corp filed Critical Garrett Corp
Publication of GB850374A publication Critical patent/GB850374A/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
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/10—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor in which the servomotor position is a function of the pressure also pressure regulators as operating means for such systems, the device itself may be a position indicating system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/06—Varying effective area of jet pipe or nozzle
    • F02K1/15—Control or regulation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0672—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using several spring-loaded membranes

Abstract

850,374. Fluid-pressure servomotor-control systems. GARRETT CORPORATION. Nov. 30, 1956 [Dec. 2, 1955], No. 36771/56. Class 135. A fluid-pressure operated apparatus to position an actuator rod 43 comprises a pressure regulator 12 delivering regulated pressure fluid at a pressure exceeding ambient by a constant amount to a chamber 25 formed by spring- biased diaphragms 23, 24 in an actuator 10. Regulated pressure fluid exhausts from the chamber 25 to atmosphere through a pair of orifices 30, 31 at sonic speeds and the pressure between the orifices, which is a constant fraction of the regulated pressure, is fed to a chamber 27 in the actuator through an orifice 32, so that the pressure differential acting on the diaphragm 24 actuates a pilot valve 38 co-operating with a moving seat 41 formed in the actuator rod 43 which is connected to the diaphragm 23. Regulated pressure fluid is also bled through a restriction 28 in the diaphragm 23 to a chamber 26 from which it exhausts to atmosphere through passages 42, 44 in the actuator rod under the control of the pilot valve. Thus, if the apparatus is installed in an aircraft to vary the area of a propelling nozzle, on the aircraft gaining height, the pressure differential across the diaphragm 24 decreases and it is moved to the left of the Figure under its spring load to open the pilot valve, which relieves the pressure in the chamber 26, and diaphragm 23 moves to the left under the applied pressure differential to move the actuator rod 43 and vary the area of the propelling nozzle and to cause the seat 41 to follow up the pilot valve until steady conditions are reached. The pressure regulator 12 comprises a diaphragm 15, one side of which is biased by a spring 14 having an adjusting screw 18 and communicates via an opening 13 with atmospheric pressure, and the other side of which abuts a spring-loaded valve element 16 that regulates the pressure of fluid supplied from a pressure fluid source through an opening 17 in the regulator casing to the pneumatic actuator and is acted upon by fluid at the regulated pressure through an orifice 20. The initial position of the actuator rod is determined by adjusting the tension of the spring acting on diaphragm 24 and the aperture of the nozzle 31, and its travel is limited by adjustable stops 49.
GB36771/56A 1955-12-02 1956-11-30 Fluid pressure operated apparatus to position an actuator rod Expired GB850374A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US850374XA 1955-12-02 1955-12-02

Publications (1)

Publication Number Publication Date
GB850374A true GB850374A (en) 1960-10-05

Family

ID=22189059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36771/56A Expired GB850374A (en) 1955-12-02 1956-11-30 Fluid pressure operated apparatus to position an actuator rod

Country Status (1)

Country Link
GB (1) GB850374A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520128A1 (en) * 1985-06-05 1986-12-11 Wilhelm 7243 Vöhringen Lupold Hydraulic actuating drive
EP0391868A2 (en) * 1989-03-09 1990-10-10 Mats Hugdahl Arrangement for positioning accuratelly the pistons of load-carrying pressure-fluid cylinder devices
DE102015005832B3 (en) * 2015-05-07 2016-11-03 Samson Aktiengesellschaft Field device for regulating a process fluid flow
CN110914554A (en) * 2017-02-15 2020-03-24 株式会社尼康 Dual valve fluid actuator assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520128A1 (en) * 1985-06-05 1986-12-11 Wilhelm 7243 Vöhringen Lupold Hydraulic actuating drive
EP0391868A2 (en) * 1989-03-09 1990-10-10 Mats Hugdahl Arrangement for positioning accuratelly the pistons of load-carrying pressure-fluid cylinder devices
EP0391868A3 (en) * 1989-03-09 1991-12-04 Mats Hugdahl Arrangement for positioning accuratelly the pistons of load-carrying pressure-fluid cylinder devices
DE102015005832B3 (en) * 2015-05-07 2016-11-03 Samson Aktiengesellschaft Field device for regulating a process fluid flow
US9952604B2 (en) 2015-05-07 2018-04-24 Samson Aktlengesellschaft Field device for controlling a process fluid flow
CN110914554A (en) * 2017-02-15 2020-03-24 株式会社尼康 Dual valve fluid actuator assembly

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