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 breakersInfo
- 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
Links
- 239000004020 conductor Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
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.
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)
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 |
HUE056862T2 (en) * | 2017-03-06 | 2022-03-28 | V K Wakchaure | An apparatus for detecting fire and preventing explosion of transformer and a method thereof |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US2464237A (en) * | 1943-05-24 | 1949-03-15 | Allis Chalmers Mfg Co | Fluid pressure actuated switch |
US2430128A (en) * | 1944-03-18 | 1947-11-04 | Allis Chalmers Mfg Co | Fluid operated switch control |
US2514747A (en) * | 1945-01-15 | 1950-07-11 | Daniels Oscar | Fluid pressure operated apparatus |
US2473687A (en) * | 1945-10-09 | 1949-06-21 | Westinghouse Air Brake Co | Fluid pressure relay valve mechanism |
US2491112A (en) * | 1947-07-05 | 1949-12-13 | Allis Chalmers Mfg Co | Gas blast breaker having two tanks and a tank interconnecting valve |
DE831787C (en) * | 1950-04-28 | 1952-02-18 | Concordia Maschinen U Elek Zit | Shut-off or control valve |
-
1954
- 1954-01-15 FR FR1098565D patent/FR1098565A/en not_active Expired
- 1954-12-28 FR FR67250D patent/FR67250E/en not_active Expired
-
1955
- 1955-01-03 US US479620A patent/US2900960A/en not_active Expired - Lifetime
- 1955-01-12 CH CH335538D patent/CH335538A/en unknown
- 1955-01-14 GB GB1205/55A patent/GB780763A/en not_active Expired
- 1955-01-15 DE DEG16242A patent/DE1225497B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR1098565A (en) | 1955-08-08 |
CH335538A (en) | 1959-01-15 |
DE1225497B (en) | 1966-09-22 |
US2900960A (en) | 1959-08-25 |
FR67250E (en) | 1957-11-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB780763A (en) | Improvements in and relating to the hydraulic control of electric circuit breakers | |
US3219380A (en) | Vacuum system for load handling | |
US2292096A (en) | Circuit-breaker operating system | |
GB840977A (en) | Electrical circuit-breaking system | |
GB738150A (en) | Improvements in hydraulically-operated electric circuit-interrupting devices | |
GB547681A (en) | Improvements in or relating to operating mechanisms for electric circuit interrupters | |
US2696196A (en) | Control valve for hydraulic apparatus | |
US2523572A (en) | Control for a plurality of fluid pressure motors | |
GB548520A (en) | Improvements in and relating to fluid operating mechanism for electric circuit breakers | |
GB868000A (en) | Improvements in or relating to circuit breakers | |
US2261925A (en) | Pressure fluid servomotor for high potential switches | |
US2578349A (en) | Dump valve for a circuit breaker pneumatic motor | |
US2411360A (en) | Circuit breaker | |
US3492922A (en) | Hydraulically operated circuit breaker with tandem piston construction | |
US3358103A (en) | Anti-pump control scheme for fluidactuated circuit interrupters | |
US2379178A (en) | Circuit breaker | |
US2831933A (en) | Circuit interrupters | |
US1805367A (en) | Automatically operated press | |
US2832011A (en) | Circuit breaker antipumping control system responsive to accumulator pressure | |
US2752536A (en) | Pneumatically operated circuit breaker with selective air cut-off | |
US2243888A (en) | Fluid pump control | |
US2399328A (en) | Circuit breaker | |
GB755096A (en) | Remotely-controlled evacuating device for hydraulic jack | |
US2877626A (en) | Electric control system for fluid operated actuators | |
GB823444A (en) | Improvements in hydraulic control apparatus more especially for the control of electric circuit-breakers |