US3769479A - Puffer-type compressed-gas circuit interrupter with double-flow action - Google Patents

Puffer-type compressed-gas circuit interrupter with double-flow action Download PDF

Info

Publication number
US3769479A
US3769479A US00248476A US3769479DA US3769479A US 3769479 A US3769479 A US 3769479A US 00248476 A US00248476 A US 00248476A US 3769479D A US3769479D A US 3769479DA US 3769479 A US3769479 A US 3769479A
Authority
US
United States
Prior art keywords
contact
movable
hollow
follower
contact structure
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 - Lifetime
Application number
US00248476A
Other languages
English (en)
Inventor
W Leeds
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.)
ABB Inc USA
Original Assignee
Westinghouse Electric 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of US3769479A publication Critical patent/US3769479A/en
Assigned to ABB POWER T&D COMPANY, INC., A DE CORP. reassignment ABB POWER T&D COMPANY, INC., A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WESTINGHOUSE ELECTRIC CORPORATION, A CORP. OF PA.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • ABSTRACT A puffer-type compressed-gas circuit interrupter is provided having a movable cylinder movable with the movable contact structure, and being provided with a hollow contact follower disposed within the moving contact structure.
  • the hollow contact follower has a lost-motion connection with the movable contact structure, and maintains abutment and a blocking of the gas flow with the hollow stationary contact until a predetermined time, thereby blocking the venting action, and permitting a pre-compression of the gas.
  • the gas such as sulfur-hexafluoride (SP gas, for exiample,.until the follower separates. from the stationary contact and draws. an arc.
  • the compressed gas is directedinto the arc column, and thence through both the hollow vented follower and also the hollow tubular stationary contact, thereby giving a double-flow gasblast action of the are for maximum arc-interrupting effectiveness.
  • Another object of the present invention is the provision of an improved puffer-type circuit interrupter in which pro-compression of the gas occurs during a finite time, by the utilization of a hollow contact follower, having a lost-motion connection with respect to the moving-contact structure, and the device being such that in the open-circuit position, there are no creepage paths along insulating surfaces in the fully-open circuit position of the device.
  • Still a further object of the present invention is the provision of an improved piston-type circuit interrupter utilizing a movable hollow cylinder sliding over a stationary fixed piston, the moving hollow cylinder having attached therewith an orifice structure, hollow movable contact structure, having interiorly disposed therewithin a hollow contact follower.
  • Still a further object of the present invention is the provision of an improved puffer-type circuit interrupter of the type set forth in the immediately preceding paragraph, having in conjunction therewith, an interiorlydisposed arc-catcher to provide a termination point for the end of the arc column at a favorable location within the hollow contact follower.
  • Another object of the present invention is the provision of an improved puffer-type circuit interrupter having the capacity for pro-compression of the gas, and involving relatively few parts.
  • Another object of the present invention is the provision of an improved puffer-type circuit interrupter in which blockage of the gas flow is afforded by the utilization of a hollow contact follower having a lost motion-connection with the moving hollow contact structure.
  • 'Another object of the present invention is the provision of an improved puffer-type circuit interrupter with a central arc-catcher that takes up a favorable location in a reduced electric field after a pre-selected displacement of a hollow contact follower by means of a lostmotion connection to the moving contact structure.
  • FIG. 1 is a vertical sectional view taken through a .puffer-type circuit interruptenadaptable for outdoor use, and at a relatively high voltage, the contact structure being illustrated in the closed-circuit position;
  • FIG. 2 is a view similar to that of FIG. 1, but illustrating the disposition of the several parts during the precompression of the gas and prior to a separation of the Contact structure.
  • FIG; 3 illustrates the disposition of the several parts at a later point in .the opening operation with the gas flowing into the arc, and providing a double'flow gasblast action
  • FIG. 4 illustratesthe fully-open circuit position'of the puffer-type-circuit interruption of the present invention, illustrating the absence of creepage surfaces between the separated contacts at widely-different voltages.
  • the reference numeral 1 generally designates a puffer-type circuit interrupter, including a pair of upstanding cylindrical-casing members 2, 3 formed of insulating material of the requisite strength, and clamped by annular support rings 4, 5, to an intermediately-disposed contact support plate 6.
  • a separable contact structure 8 is provided, including a stationary tubular contact, designated by the reference numeral 10, and fixed in any suitable manner, as by a threaded adjustable connection 10a, to an upper support plate 12 having an upper dome portion 12a integrally formed therewith.
  • An outwardly-jutting terminal-pad portion maybe provided, designated by the reference numeral 14, to which a line connection L may be secured.
  • the movable contact structure'l6 comprising a cluster of circumferentially-disposed contact fingers 17, encircled by a pluralityof'garter springs 19, and biasedinvided by an upstanding contact portion 23, formed as an integral part of an operating cylinder 25, which is moved downwardly by the operating rod 27 over the stationary fixed piston 29.
  • sulfur-'hexafluoride (SFG) gas is utilized as the arc-extinguishing gas, but it will be obvious to those skilled in the art that other gases or' fluids could be uti- Thisimportant double-flow action is accomplished by making the contact follower hollow, with an orifice opening 49 at the top.
  • An additional important feature of my invention is the central arc-catcher rod 41, which, in the closed position of the contacts, protrudes through the follower orifice 49. In the arcing position,
  • the arc-catcher 41 is below the orifice 49, where the hot arc terminal is out of highlystressed contact gap region.
  • the arc section I inside the follower 35 is kept short, so that unnecessary are energy will be avoided that might lead to clogging of the restricted venting below the follower 35.
  • a circuit interrupter'of the fluid-blast type including separable-contact means comprising a relatively stationary hollow tubular venting contact and a cooperable hollow, movable contact structure, a movable operating cylindertaffixed to said movable contact 2:29PM?- i 1a!1.s ini relatively Stationary piston, said movable piston cylinder sliding over said relatively stationary piston to'compress gas within the a movable operating cylinder, an orifice structure carried by the movable operating cylinder and having an orifice opening closely encircling said stationary hollow contact, and ,a movable follower-contact structure movable with the movable contact structure and having a lost-motion connection with the movable operating cylinder to provide a valve action and thereby temporarily prevent the exhausting of gas through the separable contact structure;
  • biasing means are provided to bias the hollow contact-follower against the relatively stationary contact in the closed position of the interrupter.
  • n1ovable contact structure is hollow and vents to the interior of a surroundingcasing.
  • a high-voltage pumped-gas circuit interrupter comprising a pair of upstanding insulating casings having an interposed contact-support plate provided there between, line-terminal means provided at said contact support plate, an upstanding fixed piston rigidly 'secured to said control-support plate, a'movable operating cylinder carrying a hollow movable contact structure sliding over said fixed piston, and relatively stationary hollow contact structure cooperating with said movable contact structure to establish an arc, and a concentrically-arranged interiorly-disposed contact follower of tubular configuration movable with the movable contact structure, and having a lost-motion connection with respect to said movable contact structure.

Landscapes

  • Circuit Breakers (AREA)
US00248476A 1972-04-28 1972-04-28 Puffer-type compressed-gas circuit interrupter with double-flow action Expired - Lifetime US3769479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24847672A 1972-04-28 1972-04-28

Publications (1)

Publication Number Publication Date
US3769479A true US3769479A (en) 1973-10-30

Family

ID=22939309

Family Applications (1)

Application Number Title Priority Date Filing Date
US00248476A Expired - Lifetime US3769479A (en) 1972-04-28 1972-04-28 Puffer-type compressed-gas circuit interrupter with double-flow action

Country Status (12)

Country Link
US (1) US3769479A (xx)
JP (1) JPS4941859A (xx)
BE (1) BE798722A (xx)
CA (1) CA968834A (xx)
CH (1) CH587556A5 (xx)
DE (1) DE2321933A1 (xx)
ES (1) ES413887A1 (xx)
FR (1) FR2182236B1 (xx)
GB (1) GB1423406A (xx)
IT (1) IT984206B (xx)
NL (1) NL7305907A (xx)
SE (1) SE386540C (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914569A (en) * 1974-05-02 1975-10-21 Ite Imperial Corp Puffer interrupter with downstream initiated arc
US3987262A (en) * 1975-05-12 1976-10-19 Westinghouse Electric Corporation Puffer-type gas-blast circuit-interrupter having variable-area stationary composite piston structure
US4048456A (en) * 1976-04-01 1977-09-13 General Electric Company Puffer-type gas-blast circuit breaker
US4070558A (en) * 1974-10-11 1978-01-24 Reyrolle Parsons Limited High voltage circuit-interrupters
US4139751A (en) * 1975-09-25 1979-02-13 Westinghouse Electric Corp. Puffer-type compressed-gas circuit interrupter
US4211904A (en) * 1977-02-28 1980-07-08 Licentia Patent-Verwaltungs-G.M.B.H. Gas-blast circuit breaker
US4236054A (en) * 1977-08-12 1980-11-25 Licentia Patent-Verwaltungs-G.M.B.H. Gas-blast circuit breaker
US4241248A (en) * 1978-10-16 1980-12-23 S & C Electric Company Circuit interrupting device
US4780581A (en) * 1987-10-30 1988-10-25 Rte Corporation Suicide switch/interrupter with variable volume chamber and puffer action
US4829150A (en) * 1987-02-26 1989-05-09 Mitsubishi Denki Kabushiki Kaisha Gas-blask load-break switch

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5338670U (xx) * 1976-09-07 1978-04-04
JPS55100637U (xx) * 1979-01-06 1980-07-12
JPS55163731A (en) * 1979-06-06 1980-12-20 Hitachi Ltd Buffer type gas breaker
ATE32286T1 (de) * 1983-11-15 1988-02-15 Sprecher Energie Ag Druckgasschalter.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3527912A (en) * 1967-01-09 1970-09-08 Merlin Gerin Gas blast circuit breaker
US3538282A (en) * 1966-11-29 1970-11-03 Westinghouse Electric Corp Fluid-blast circuit interrupters with exhaust valves responsive solely to the pressure generated by an arc of excessive magnitude

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933575A (en) * 1956-10-22 1960-04-19 Westinghouse Electric Corp Circuit interrupters
FI56499C (fi) * 1973-07-17 1980-02-11 Basf Ag Synergistiskt medel foer skyddande av trae mot av svampar och insekter foerorsakad foerstoering

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538282A (en) * 1966-11-29 1970-11-03 Westinghouse Electric Corp Fluid-blast circuit interrupters with exhaust valves responsive solely to the pressure generated by an arc of excessive magnitude
US3527912A (en) * 1967-01-09 1970-09-08 Merlin Gerin Gas blast circuit breaker

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914569A (en) * 1974-05-02 1975-10-21 Ite Imperial Corp Puffer interrupter with downstream initiated arc
US4070558A (en) * 1974-10-11 1978-01-24 Reyrolle Parsons Limited High voltage circuit-interrupters
US3987262A (en) * 1975-05-12 1976-10-19 Westinghouse Electric Corporation Puffer-type gas-blast circuit-interrupter having variable-area stationary composite piston structure
FR2311398A1 (fr) * 1975-05-12 1976-12-10 Westinghouse Electric Corp Interrupteur a jet de gaz du type souffleur pourvu d'un piston fixe de construction combinee a surface variable
US4139751A (en) * 1975-09-25 1979-02-13 Westinghouse Electric Corp. Puffer-type compressed-gas circuit interrupter
US4048456A (en) * 1976-04-01 1977-09-13 General Electric Company Puffer-type gas-blast circuit breaker
US4211904A (en) * 1977-02-28 1980-07-08 Licentia Patent-Verwaltungs-G.M.B.H. Gas-blast circuit breaker
US4236054A (en) * 1977-08-12 1980-11-25 Licentia Patent-Verwaltungs-G.M.B.H. Gas-blast circuit breaker
US4241248A (en) * 1978-10-16 1980-12-23 S & C Electric Company Circuit interrupting device
US4829150A (en) * 1987-02-26 1989-05-09 Mitsubishi Denki Kabushiki Kaisha Gas-blask load-break switch
US4780581A (en) * 1987-10-30 1988-10-25 Rte Corporation Suicide switch/interrupter with variable volume chamber and puffer action

Also Published As

Publication number Publication date
IT984206B (it) 1974-11-20
SE386540C (sv) 1980-06-09
FR2182236A1 (xx) 1973-12-07
SE386540B (sv) 1976-08-09
CA968834A (en) 1975-06-03
CH587556A5 (xx) 1977-05-13
FR2182236B1 (xx) 1977-04-29
NL7305907A (xx) 1973-10-30
GB1423406A (en) 1976-02-04
ES413887A1 (es) 1976-01-16
DE2321933A1 (de) 1973-11-08
BE798722A (fr) 1973-10-26
JPS4941859A (xx) 1974-04-19

Similar Documents

Publication Publication Date Title
US3839613A (en) Puffer type circuit breaker
US3769479A (en) Puffer-type compressed-gas circuit interrupter with double-flow action
US3854019A (en) Electric compressed-gas circuit breaker
US3639712A (en) Gas blast circuit interrupter having conducting orifice means
US3814883A (en) Gas-blast circuit interrupter with insulating arc shield
US4046978A (en) Contact structure for puffer-type gas-blast circuit interrupter
US4139753A (en) Puffer-type compressed-gas circuit-interrupter having improved separable contact structure
US3238340A (en) Gas-blast circuit breaker
US3291948A (en) Orifice structure for compressed gas-circuit interrupter
US3214550A (en) Circuit interrupters with crossbars captively related to piston structures
US3733452A (en) Pressure equalization means between compartments in a puffer circuit interrupter
US4110580A (en) Gas-type circuit-interrupters having admixtures of helium with small concentrations of sulfur-hexafluoride (SF6) gas
US3872272A (en) Circuit breaker
US4075447A (en) Double-puffer-type compressed-gas circuit-interrupter constructions
US3549842A (en) Fluid-blast circuit interrupter with piston assembly and electromagnetic driving means
US3674956A (en) Puffer type circuit interrupter
US3290469A (en) Compressed-gas circuit interrupter having cavitation means
US4000387A (en) Puffer-type gas circuit-interrupter
US3275778A (en) Compressed-gas circuit interrupter with pressurized arcing chamber and downstream blast valve
US4289942A (en) Gas-blast circuit-interrupter with multiple insulating arc-shield construction
US3551625A (en) Circuit breakers
US2924690A (en) Circuit interrupters
US4465910A (en) Self-generating gas flow interrupter
US4371766A (en) Puffer interrupter with two-piece interrupter contact
US4105879A (en) Magnetic puffer type gas circuit breaker

Legal Events

Date Code Title Description
AS Assignment

Owner name: ABB POWER T&D COMPANY, INC., A DE CORP., PENNSYLV

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WESTINGHOUSE ELECTRIC CORPORATION, A CORP. OF PA.;REEL/FRAME:005368/0692

Effective date: 19891229