GB840977A - Electrical circuit-breaking system - Google Patents
Electrical circuit-breaking systemInfo
- Publication number
- GB840977A GB840977A GB33415/56A GB3341556A GB840977A GB 840977 A GB840977 A GB 840977A GB 33415/56 A GB33415/56 A GB 33415/56A GB 3341556 A GB3341556 A GB 3341556A GB 840977 A GB840977 A GB 840977A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- jack
- contact
- restricted
- supply
- 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
Classifications
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/022—Installations or systems with accumulators used as an emergency power source, e.g. in case of pump failure
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/025—Installations or systems with accumulators used for thermal compensation, e.g. to collect expanded fluid and to return it to the system as the system fluid cools down
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Circuit Breakers (AREA)
- Mechanisms For Operating Contacts (AREA)
- Actuator (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
840,977. Actuation of switches; contact members for switches. GRATZMULLER, J. L. Nov. 1, 1956 [Nov. 4, 1955], No. 33415/56. Class 38 (5). [Also in Groups XVIII, XXIX and XXXVI] The hydraulic operating- mechanism of a circuitbreaker is provided with a calibrated speed - limiting orifice to restrict the flow of liquid to or from an hydraulic jack so that after a high initial acceleration of the moving contact the speed of the contact is limited to a substantially constant optimum value. In Fig. 2, the moving contact (not shown) is closed by a single-acting jack when a valve 17 is opened to supply liquid from an hydraulic accumulator 11 through a sharpedged orifice 24 to the cylinder 7 of the jack, the orifice restricting the flow of liquid under pressure. The moving contact is opened by a spring 10 when a valve 21 is opened to exhaust the cylinder 7 to a reservoir 13, the flow of liquid from the cylinder being restricted by a sharpedged orifice 25. Non-return valves may be associated with the orifices so that a single conduit may be used both for the supply of liquid to and the exhausting of the liquid from the cylinder, Fig. 5 (not shown). In Fig. 10 the moving contact is operated by a double-acting jack 40, 41, calibrated orifices 51, 52 being provided in " non-return " valves 53, 54 arranged so that the supply of liquid to one or other side of the piston 41 is not restricted, but the exhaust from the opposite side of the piston is restricted. In another arrangement, Figs. 15 and 16 (not shown), a double-acting jack has one side of the piston permanently supplied from an hydraulic accumulator, the supply to and the delivery from the other side of the piston being restricted by sharp-edged orifices. In further arrangements, only the supply to or delivery from a single-acting jack or from one side of a doubleacting jack is restricted. Contact members for switches.-The axiallymovable contact-rod 1 co-operates with a fixed " tulip " type contact formed by shoe-like members 122 carried on rods mounted in fixed supports and biased by compression-springs 123. Specifications 702,088, 712,577, 735,660 and 780,763 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR701941 | 1955-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB840977A true GB840977A (en) | 1960-07-13 |
Family
ID=33462506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33415/56A Expired GB840977A (en) | 1955-11-04 | 1956-11-01 | Electrical circuit-breaking system |
Country Status (5)
Country | Link |
---|---|
US (1) | US2933069A (en) |
CH (1) | CH355199A (en) |
DE (1) | DE1152469B (en) |
FR (1) | FR1135122A (en) |
GB (1) | GB840977A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2239051A (en) * | 1989-12-14 | 1991-06-19 | Teves Gmbh Alfred | Piston-type pressure accumulator and switch for traction slip controlled brake systems |
US5298702A (en) * | 1991-09-06 | 1994-03-29 | Secheron Sa | Pressure medium drive for closing and opening the contacts of a circuit-breaker |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3150245A (en) * | 1957-09-13 | 1964-09-22 | Westinghouse Electric Corp | Liquefied gas circuit interrupters |
US3136226A (en) * | 1959-03-06 | 1964-06-09 | Gratzmuller Jean Louis | Control system for hydraulic actuators |
NL276875A (en) * | 1961-04-06 | |||
FR1352178A (en) * | 1962-12-04 | 1964-02-14 | Comp Generale Electricite | Improvements to oleopneumatic circuit breaker control devices that must perform successive operations for a short period of time |
FR1423813A (en) * | 1964-11-20 | 1966-01-07 | Quick purge valve | |
DE1750740C3 (en) * | 1968-05-31 | 1981-06-04 | Siemens AG, 1000 Berlin und 8000 München | Hydraulic accumulator for driving electrical switchgear |
FR2115506A5 (en) * | 1970-11-23 | 1972-07-07 | Gratzmuller Jean Louis | |
JPS5535809B2 (en) * | 1972-09-14 | 1980-09-17 | ||
US4077303A (en) * | 1976-04-14 | 1978-03-07 | Peder Ulrik Poulsen | Apparatus for generating an impact force |
FR2422245A1 (en) * | 1978-01-04 | 1979-11-02 | Gratzmuller Claude | HYDRAULIC CONTROL SYSTEM FOR ELECTRIC CIRCUIT BREAKERS |
FR2463056A1 (en) * | 1979-08-09 | 1981-02-20 | Aerazur Constr Aeronaut | DEVICE FOR TILTING THE NET OF A BARRIER FOR THE STOPPING OF AIRCRAFT |
US4729224A (en) * | 1984-06-04 | 1988-03-08 | Mcateer James D | Installation, apparatus and method for actuating doors, gates and the like under extreme environmental conditions |
DE102012011130A1 (en) * | 2012-06-05 | 2013-12-05 | Abb Technology Ag | Working cylinder for driving an electric circuit breaker |
CN103925208B (en) * | 2014-03-31 | 2016-04-06 | 山东大学 | Indoor slip casting model test voltage stabilizing grouting pump and installation thereof and using method |
CN104595174B (en) * | 2014-12-01 | 2017-10-03 | 柳州市桥厦工程管材有限公司 | A kind of stable-pressure device on slurry pump |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1037039A (en) * | 1912-08-27 | Westinghouse Air Brake Co | Electric-pump governor. | |
US674858A (en) * | 1900-04-26 | 1901-05-28 | Donald Grant | Contact for controllers or reversing-switches. |
US853785A (en) * | 1905-08-29 | 1907-05-14 | George J Henry Jr | Safety means for fluid-pressure lines. |
US1993195A (en) * | 1932-11-15 | 1935-03-05 | Cash A W Co | Valve mechanism |
US2127501A (en) * | 1935-12-28 | 1938-08-23 | Leeds And Northurp Company | Fluid flow measuring means |
GB532869A (en) * | 1939-06-27 | 1941-02-03 | British Thomson Houston Co Ltd | Improvements in gas blast electric circuit breakers |
DE726789C (en) * | 1941-04-29 | 1942-10-26 | Bbc Brown Boveri & Cie | Double-acting compressed air drive for operating electrical switches |
US2523572A (en) * | 1944-03-18 | 1950-09-26 | Allis Chalmers Mfg Co | Control for a plurality of fluid pressure motors |
US2533559A (en) * | 1949-01-18 | 1950-12-12 | Allis Chalmers Mfg Co | Pneumatic interlocking device for preventing improper closing of a circuit breaker |
US2548221A (en) * | 1949-02-15 | 1951-04-10 | Allis Chalmers Mfg Co | Fluid pressure actuated switch |
US2669628A (en) * | 1950-01-05 | 1954-02-16 | Westinghouse Electric Corp | Liquid break circuit interrupter |
FR1056143A (en) * | 1950-12-20 | 1954-02-24 | Bendix Aviat Corp | Hydraulic control device |
US2736295A (en) * | 1953-01-23 | 1956-02-28 | Allis Chalmers Mfg Co | Circuit breaker with fluid motor having fluid admission varied during stroke |
FR1098565A (en) * | 1954-01-15 | 1955-08-08 | Hydraulic control device for circuit breaker, or the like |
-
1955
- 1955-11-04 FR FR1135122D patent/FR1135122A/en not_active Expired
-
1956
- 1956-10-31 CH CH355199D patent/CH355199A/en unknown
- 1956-11-01 GB GB33415/56A patent/GB840977A/en not_active Expired
- 1956-11-02 DE DEG20835A patent/DE1152469B/en active Pending
- 1956-11-02 US US620075A patent/US2933069A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2239051A (en) * | 1989-12-14 | 1991-06-19 | Teves Gmbh Alfred | Piston-type pressure accumulator and switch for traction slip controlled brake systems |
GB2239051B (en) * | 1989-12-14 | 1994-04-27 | Teves Gmbh Alfred | Piston-type pressure accumulator,in particular for traction slip controlled brake systems,and switching arrangement for it |
US5298702A (en) * | 1991-09-06 | 1994-03-29 | Secheron Sa | Pressure medium drive for closing and opening the contacts of a circuit-breaker |
Also Published As
Publication number | Publication date |
---|---|
CH355199A (en) | 1961-06-30 |
FR1135122A (en) | 1957-04-24 |
DE1152469B (en) | 1963-08-08 |
US2933069A (en) | 1960-04-19 |
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