GB840977A - Electrical circuit-breaking system - Google Patents

Electrical circuit-breaking system

Info

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
Application number
GB33415/56A
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.)
JEAN LOUIS CRATZMULLER
Original Assignee
JEAN LOUIS CRATZMULLER
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 JEAN LOUIS CRATZMULLER filed Critical JEAN LOUIS CRATZMULLER
Publication of GB840977A publication Critical patent/GB840977A/en
Expired legal-status Critical Current

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)
  • Circuit Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Actuator (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Switches Operated By Changes In Physical Conditions (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.
GB33415/56A 1955-11-04 1956-11-01 Electrical circuit-breaking system Expired GB840977A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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