US3928738A - Coupling arrangement for a compressed-gas circuit breaker equipped with a hydraulic drive - Google Patents

Coupling arrangement for a compressed-gas circuit breaker equipped with a hydraulic drive Download PDF

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Publication number
US3928738A
US3928738A US457233A US45723374A US3928738A US 3928738 A US3928738 A US 3928738A US 457233 A US457233 A US 457233A US 45723374 A US45723374 A US 45723374A US 3928738 A US3928738 A US 3928738A
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US
United States
Prior art keywords
coupling
enclosure
plunger portion
gas
coupling arrangement
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
US457233A
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English (en)
Inventor
Helmut Beier
Dieter Noack
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Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
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Publication of US3928738A publication Critical patent/US3928738A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • 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
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/50—Flanged connections
    • F16B2200/503—Flanged connections the flange being separate from the elements to be connected

Definitions

  • ABSTRACT includes a coupling for connecting the plunger portion to the piston rod of the hydraulic drive and an airfilled housing for receiving the coupling therein.
  • the housing is arranged between the hydraulic drive and the enclosure.
  • the invention relates to a coupling arrangement for a compressed gas circuit breaker such as a high-voltage power circuit breaker or the like equipped with sealed gas chambers for the gas which functions as a quenching and insulation medium and with a dual-action hydraulic drive for controlling the contact system.
  • a compressed gas circuit breaker such as a high-voltage power circuit breaker or the like equipped with sealed gas chambers for the gas which functions as a quenching and insulation medium and with a dual-action hydraulic drive for controlling the contact system.
  • the coupling arrangement according to the invention by the feature that between the gas enclosure of the breaker and the drive an airfilled intermediate housing is placed which serves to receive a coupling which connects the piston rod of the drive with a plunger for actuating the contact system.
  • the air-filled intermediate housing is configured to accommodate a switch position indicator which is preferably mechanically developed.
  • the coupling can be rigidly coupled with the indicating element of the switch position indicator.
  • the coupling arrangement can consist of two ring components which can be mutually placed under tension and are axially displaceable, one of these being positively connected with the plunger portion and the other with the piston rod.
  • FIG. 1 is a schematic diagram, partially in section, of a compressed-gas circuit breaker equipped with a coupling arrangement according to the invention.v
  • FIG. 2 illustrates details of the coupling arrangement according to the invention.
  • FIG. 3 shows details of the coupling according to a subsidiary emobdiment of the invention wherein ring members are provided at the piston rod and the plunger portion respectively.
  • FIG. 4 is a schematic diagram showing how the indicating memberof an indicating device of the coupling arrangement is rigidly connected to the coupling in the air-filled housing.
  • FIG. 5 illustrates how the coupling arrangement can be equipped with a hand operated device for manually actuating the contact systems of the breaker.
  • the compressed-gas circuit breaker depicted in FIG. 1 can be configured as a high-voltage power circuit breaker according to the dual pressure principle, as well as the blast piston principle. In both cases, a gas such as sulphur hexafluoride is used asthe quenching and insulation medium. The gas is under a pre-determined pressure of 4 to 10 bar for example.
  • Reference numeral 1 designates the compressed-gas circuit breaker in its entirety.
  • the breaker includes two axially arranged switching chambers 2 and 3Iwherein two contact systems, connected in series, are housed.
  • Thecontact systems can be actuated simultaneously.
  • the switching chambers 2 and 3 which contain the contact systems are attached to a gearing head 4 which is maintained at high-voltage potential.
  • the gearing head 4 is mounted on a vertical supporting insulator 5 having an interior 7 wherein a moveable actuator rod 6 is located for actuating the contact systems.
  • the rod 6 is made of insulating material.
  • the gaseous insulating medium such as sulfur hexafluoride is also located so that the actuator rod 6 has to be carried through the wall 13 of the gas containing enclosure of the compressed-gas circuit breaker l by means of a gastight bushing 14.
  • a gastight feedthrough of the type designated by reference numeral 14 is disclosed in the United States patent application of Gerhard Thurk and Reinhard Lekar entitled: Gastight Feedthrough which is based on patent application No. P 23 15 732.6 filed on Mar. 27, 1973 in the Federal Republic of Germany.
  • the supporting insulator 5 is in turn supported by an air-filled intermediate housing 8 wherein an indicator device 9 for indicating the switch position of the breaker is located.
  • the free end 12 of the actuator rod 6 extends through the wall 13 and is configured as a plunger which terminates in the interior of the intermediate housing 8.
  • the free end 15 of the piston rod 16 which belongs to a drive system is rigidly coupled to the free end 12 of rod 6.
  • the intermediate housing 8 is supported by a base pedestal 10.
  • Drive 11 is flange-connected to the under 3 side of the intermediate housing 8.
  • the piston rod 16 of a hydraulic drive 11 operating at high pressure is coupled by means of a coupling 18 to the plunger portion 12.
  • the piston rod 16 is led into the interior of the housing 8 by means of a pressuretight bushing 19 which in operation, is impermeable to the liquid.
  • the operation of the compressed-gas circuit breaker is not adversely affected by oil pouring out in the event of a leak because the gastight bushing 14 prevents a penetration of hydraulic liquid into the gas region 7 of the electric compressedgas circuit breaker.
  • the coupling 18 consists of two rings 18a and 18b, which can be mutually placed under tension and are connected together by screw elements 20, and which are axially displaceable against each other. In this manner, a center displacement of the plunger portion 12 and the piston rod 16 can easily be equalized.
  • the ring part 180 is connected in a force-tight manner with the plunger portion 12, and the ring portion 18b is connected in a force-tight manner with the piston rod 16.
  • FIG. 3 shows details of the coupling means for coupling the ring members 18a and 18b so as to permit the ring members to be axially displaceable with respect to each other.
  • Coupling 18 is engaged by a lever 21, which is rigidly coupled to the indicating element of the indicator device 22 for indicating switch position. Details of this connection are shown in F IG. 4.
  • a compressed-gas circuit breaker such as a highvoltage power breaker or the like
  • the breaker including: a closed gas circuit for gas utilized as an arcquenching and insulatingmedium; an enclosure containing the gas; a contact system mounted in the enclosure; an actuator rod connected to the contact system for actuating the same, the actuator rod having a plunger portion extending from the enclosure; and, a
  • a coupling arrangement comprising: an air-filled housing containing the plunger portion and the piston rod therein; a coupling connecting the plunger portion directly to the piston rod in said housing; and, a gas-tight bushing on said housing surrounding the plunger portion for facilitating the penetration of the plunger portion into said housing from the enclosure in a gas-tight manner; said housing being disposed directly between the enclosure and the hydraulic drive whereby hydraulic fluid from the hydraulic drive is prevented from penetrating the gas containing enclosure in the event of a failure of said bushing.
  • the coupling arrangement of claim 1 wherein the coupling is movable between two positions corresponding to the open and closed positions, respectively, of the contact system, said coupling arrangement comprising an indicator device connected to said coupling indicating the position of the contact system.
  • the coupling arrangement of claim 1 comprising an extension member connected to said coupling, and manually operated actuation means fixedly mounted on said air-filled housing and connected to said extension member for manually moving said coupling between two positions corresponding to the open and closed positions of the contact system respectively.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
US457233A 1973-04-04 1974-04-02 Coupling arrangement for a compressed-gas circuit breaker equipped with a hydraulic drive Expired - Lifetime US3928738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2317499A DE2317499C3 (de) 1973-04-04 1973-04-04 Druckgasschalter

Publications (1)

Publication Number Publication Date
US3928738A true US3928738A (en) 1975-12-23

Family

ID=5877306

Family Applications (1)

Application Number Title Priority Date Filing Date
US457233A Expired - Lifetime US3928738A (en) 1973-04-04 1974-04-02 Coupling arrangement for a compressed-gas circuit breaker equipped with a hydraulic drive

Country Status (7)

Country Link
US (1) US3928738A (hu)
JP (1) JPS5030058A (hu)
CH (1) CH567797A5 (hu)
DE (1) DE2317499C3 (hu)
FR (1) FR2224858B1 (hu)
GB (1) GB1444674A (hu)
IT (1) IT1011217B (hu)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6646850B1 (en) * 1999-06-11 2003-11-11 Siemens Aktiengesellschaft High-voltage power breaker having an outlet flow channel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2181537A (en) * 1937-05-12 1939-11-28 Falk Corp Coupling
US2404385A (en) * 1942-09-03 1946-07-23 Bell Telephone Labor Inc Spring holder for cantilever elements
US2500429A (en) * 1942-02-19 1950-03-14 Nijland Hendrik A Hidde Electric gas blast circuit breaker
US2868576A (en) * 1950-02-06 1959-01-13 Roger C Boughton Gasket for bell and spigot pipe joints
US3076081A (en) * 1961-05-22 1963-01-29 Gen Electric Condition-responsive indicating means for an electric circuit breaker
US3336453A (en) * 1964-12-29 1967-08-15 Gen Electric Means for controlling the blast valve and contacts of a gas blast circuit breaker

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS448215Y1 (hu) * 1966-10-19 1969-03-29
JPS4888475A (hu) * 1972-02-25 1973-11-20

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2181537A (en) * 1937-05-12 1939-11-28 Falk Corp Coupling
US2500429A (en) * 1942-02-19 1950-03-14 Nijland Hendrik A Hidde Electric gas blast circuit breaker
US2404385A (en) * 1942-09-03 1946-07-23 Bell Telephone Labor Inc Spring holder for cantilever elements
US2868576A (en) * 1950-02-06 1959-01-13 Roger C Boughton Gasket for bell and spigot pipe joints
US3076081A (en) * 1961-05-22 1963-01-29 Gen Electric Condition-responsive indicating means for an electric circuit breaker
US3336453A (en) * 1964-12-29 1967-08-15 Gen Electric Means for controlling the blast valve and contacts of a gas blast circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6646850B1 (en) * 1999-06-11 2003-11-11 Siemens Aktiengesellschaft High-voltage power breaker having an outlet flow channel

Also Published As

Publication number Publication date
DE2317499B2 (de) 1975-04-17
FR2224858B1 (hu) 1978-06-02
CH567797A5 (hu) 1975-10-15
FR2224858A1 (hu) 1974-10-31
IT1011217B (it) 1977-01-20
JPS5030058A (hu) 1975-03-26
DE2317499C3 (de) 1975-12-18
GB1444674A (en) 1976-08-04
DE2317499A1 (de) 1974-10-17

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