GB780763A - Improvements in and relating to the hydraulic control of electric circuit breakers - Google Patents

Improvements in and relating to the hydraulic control of electric circuit breakers

Info

Publication number
GB780763A
GB780763A GB1205/55A GB120555A GB780763A GB 780763 A GB780763 A GB 780763A GB 1205/55 A GB1205/55 A GB 1205/55A GB 120555 A GB120555 A GB 120555A GB 780763 A GB780763 A GB 780763A
Authority
GB
United Kingdom
Prior art keywords
jack
valve
pressure
main
exhaust
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
GB1205/55A
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 GB780763A publication Critical patent/GB780763A/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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid 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
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow control
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line 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
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting output members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H2033/308—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator comprising control and pilot valves

Abstract

780,763. Actuation of switches. GRATZMULLER, J. L. Jan. 14, 1955 [Jan. 15, 1954; Dec. 28, 1954], No. 1205/55. Class 38 (5). [Also in Group XXIX] Hydraulic control means for a circuit-breaker comprises a resiliently loaded single-acting main hydraulic jack 3, Fig. 2, operative on the circuitbreaker, a main valve 25 for selectively connecting the main jack to a source 1 of hydraulic pressure or to exhaust, a resiliently loaded auxiliary jack 9 whereof the power stroke moves the main valve to connect the main jack to the source of hydraulic pressure, a first control valve 29 to admit hydraulic pressure to the auxiliary jack, a second control valve 24 to exhaust the auxiliary valve, and a restricted hydraulic connection 35 between the main and auxiliary jacks, such connection maintaining hydraulic pressure in the auxiliary jack after the main valve has been moved to connect the main jack to the pressure source and the first control valve has been allowed to close, and until the second control valve has been opened to exhaust the auxiliary jack. The main valve 25 comprises ball valves 25a, 25b controlling an inlet conduit 2b and an exhaust conduit 44 respectively. The valves are operated by a jack piston 8 loaded by a spring 10. The space below the piston 8 may be connected on the one hand to the source 1 through a normally closed feed valve 29 or on the other hand to exhaust through a normally closed exhaust valve 24 and a conduit 54, the valves 29, 24 being operated by the respective electromagnets 6, 15. Once the jack piston 8 is raised to the feed position by the operation of the valve 29, it is maintained in this position although the electromagnet 6 is deenergized by pressure from the circuit 2c leaking through a restriction 35 in a conduit 11a, 11b leading to the jack 9. The restriction 35 is small in comparison with the outlet of the valve 24 so that the jack 9 exhausts easily in the time the electromagnet 15 is energized. The ball valves 25a, 25b are spaced by a tappet rod 26 between them. Non-return valves 30, 31 opening towards the jack 9 are located between the valve 29 and the jack 9 and between the restriction 35 and the jack 9. A separate exhaust valve 38 is associated with the valve 29 to drain off any leakage past the latter, both valves being operated by the electromagnet 6 through a tappet rod 39. A restricted orifice 27 is provided between the source 1 and the valve 25. A pressure-responsive device 34 associated with the supply conduit 2a may be arranged to trip the exhaust valve 24 or to prevent the operation of the valve 29 if the pressure of the source 1 is inadequate. A pressure-responsive device 41 associated with the outlet duct 2c may be utilized to give a pressure reading indicative of the position of the circuit-breaker operating jack. Fig. 3 shows a complete system for operating a circuit-breaker D connecting conductors C<SP>1</SP>, C<SP>2</SP>. The circuit-making operation is effected against a spring Rp by a jack Vp associated with the rapid release device described in Specification 755,096. The jack Vp is supplied with pressure liquid from the pilot jack Va which has a spring-loaded jack piston integral with a lift-type exhaust valve Cp. An integral tappet on the valve Cp opens the feed valve Ap supplied from the source S. The pilot jack is controlled by an inlet valve Aa and an exhaust valve C<SP>1</SP>p operated by electromagnets Ee and Ed respectively. The electromagnet Ed may be energized under the control of a micro-switch operated by a pressure-responsive device M<SP>2</SP> on a fall of pressure in the source S. The same device M<SP>2</SP> may be similarly arranged to prevent the electromagnet Ee from being energized. A further pressure-responsive device may operate through micro-switches to interrupt the circuit to the electromagnet Ee when the main circuit is safely established and to interrupt the circuit of the electromagnet Ed when the main circuit is safely broken. Pressure in the pilot jack is maintained through a restriction 35 in a conduit G. Specification 777,750 also is referred to.
GB1205/55A 1954-01-15 1955-01-14 Improvements in and relating to the hydraulic control of electric circuit breakers Expired GB780763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1225497X 1954-01-15

Publications (1)

Publication Number Publication Date
GB780763A true GB780763A (en) 1957-08-07

Family

ID=9677406

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1205/55A Expired GB780763A (en) 1954-01-15 1955-01-14 Improvements in and relating to the hydraulic control of electric circuit breakers

Country Status (5)

Country Link
US (1) US2900960A (en)
CH (1) CH335538A (en)
DE (1) DE1225497B (en)
FR (2) FR1098565A (en)
GB (1) GB780763A (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1135122A (en) * 1955-11-04 1957-04-24 Jean Louis Gratzmuller Hydraulic control device with speed control, for circuit breaker
US3021410A (en) * 1957-04-30 1962-02-13 Allis Chalmers Mfg Co Device for lowering and raising a movable structure from or to its support
US2997066A (en) * 1959-04-30 1961-08-22 Ross Operating Valve Co Fluid-actuated shiftable mechanism
FR1281356A (en) * 1960-11-28 1962-01-12 Control device for hydraulic circuit
US3175470A (en) * 1962-03-07 1965-03-30 Eimco Corp Pressure fluid control means and system
US3253516A (en) * 1963-09-12 1966-05-31 Ross Operating Valve Co Valve
US3223000A (en) * 1964-05-27 1965-12-14 James A Payne Gun control
FR1423813A (en) * 1964-11-20 1966-01-07 Quick purge valve
US3520511A (en) * 1968-02-14 1970-07-14 Lucas Industries Ltd Pulse operated valve
US3561326A (en) * 1968-03-06 1971-02-09 Parker Hannifin Corp Pulse phase modulated servoactuator
US3494258A (en) * 1968-05-20 1970-02-10 Ambac Ind Solenoid operated valve control mechanism
US3495501A (en) * 1968-06-04 1970-02-17 Gen Electric Valve operating and emergency closing mechanism
US3564975A (en) * 1968-11-20 1971-02-23 Gen Motors Corp Power steering gear
US3654837A (en) * 1969-12-29 1972-04-11 Abex Corp Hydraulic control systems
FR2115506A5 (en) * 1970-11-23 1972-07-07 Gratzmuller Jean Louis
FR2116863A5 (en) * 1970-12-10 1972-07-21 Gratzmuller Jean Louis TWO-WAY HYDRAULIC CONTROL
CH539784A (en) * 1971-12-13 1973-07-31 Bbc Brown Boveri & Cie Hydraulic drive, in particular for electrical switching devices
DE2235074B2 (en) * 1972-07-12 1979-05-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Hydraulic actuator for an electrical switch
DE2234812B2 (en) * 1972-07-13 1975-08-21 Siemens Ag, 1000 Berlin Und 8000 Muenchen Hydraulic actuator for an electrical switch
FR2200935A5 (en) * 1972-09-27 1974-04-19 Hydromatik Gmbh
FR2233516A2 (en) * 1973-06-14 1975-01-10 Comp Generale Electricite Fluid press. control valve assembly - has three pistons on single shaft and pilot valve to control fluid flow
US4036106A (en) * 1975-04-03 1977-07-19 Southwestern Manufacturing Co. Actuator control system
US4085587A (en) * 1975-11-03 1978-04-25 Leslie H. Garlinghouse Fail safe liquid power device
JPS6028082B2 (en) * 1977-07-20 1985-07-03 株式会社日立製作所 Fluid pressure drive device
CH627247A5 (en) * 1977-08-29 1981-12-31 Jean Louis Gratzmuller
FR2422245A1 (en) * 1978-01-04 1979-11-02 Gratzmuller Claude HYDRAULIC CONTROL SYSTEM FOR ELECTRIC CIRCUIT BREAKERS
US4179889A (en) * 1978-02-22 1979-12-25 Gondek John T Control circuit for hydraulic cylinder and shaft assembly
JPS5693227A (en) * 1979-12-27 1981-07-28 Hitachi Ltd Hydraulic driving unit
US4516472A (en) * 1980-12-26 1985-05-14 Tokyo Shibaura Denki Kabushiki Kaisha Hydraulically-operated breaking device
DE8300760U1 (en) * 1983-01-13 1984-11-08 Beringer-Hydraulik GmbH, Neuheim, Zug Reversing seat valve
US4620567A (en) * 1983-08-29 1986-11-04 American Standard Inc. Solenoid-operated valve
US4570662A (en) * 1984-04-09 1986-02-18 General Motors Corporation Demand responsive flow control valve
DE3601877C1 (en) * 1986-01-23 1987-06-04 Licentia Gmbh Drive for high-voltage circuit breakers
FR2614669B1 (en) * 1987-04-29 1989-07-13 Gratzmuller Claude THREE-WAY HYDRAULIC VALVE
US5209153A (en) * 1990-02-28 1993-05-11 Daia Industry Co., Ltd. Portable hydraulically operated device incorporating automatic drain valve
US6357335B1 (en) * 1999-12-23 2002-03-19 Sox Corporation Pneumatic volume booster for valve positioner
EP2565468B1 (en) * 2011-09-01 2015-07-29 Carl Freudenberg KG Valve assembly
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US1947191A (en) * 1930-08-04 1934-02-13 Prosperity Co Inc Power pressing machine
DE676340C (en) * 1937-10-30 1939-06-01 Ingenieur U Verkaufsbuero Reck Safety valve for compressed air machines
US2231708A (en) * 1938-08-22 1941-02-11 Westinghouse Electric & Mfg Co Circuit breaker
US2308261A (en) * 1939-12-06 1943-01-12 Gen Electric Fluid pressure control system
US2314398A (en) * 1940-12-24 1943-03-23 New York Pressing Iron Company Garment pressing machine
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Also Published As

Publication number Publication date
US2900960A (en) 1959-08-25
DE1225497B (en) 1966-09-22
FR67250E (en) 1957-11-25
CH335538A (en) 1959-01-15
FR1098565A (en) 1955-08-08

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