EP0024542A1 - Interrupteur à gaz comprimé - Google Patents

Interrupteur à gaz comprimé Download PDF

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Publication number
EP0024542A1
EP0024542A1 EP80104263A EP80104263A EP0024542A1 EP 0024542 A1 EP0024542 A1 EP 0024542A1 EP 80104263 A EP80104263 A EP 80104263A EP 80104263 A EP80104263 A EP 80104263A EP 0024542 A1 EP0024542 A1 EP 0024542A1
Authority
EP
European Patent Office
Prior art keywords
switching chamber
support insulator
insulator
gas
support
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.)
Granted
Application number
EP80104263A
Other languages
German (de)
English (en)
Other versions
EP0024542B1 (fr
Inventor
Guido Hux
Hubert Wallimann
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Sprecher und Schuh AG
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 Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Priority to AT80104263T priority Critical patent/ATE1401T1/de
Publication of EP0024542A1 publication Critical patent/EP0024542A1/fr
Application granted granted Critical
Publication of EP0024542B1 publication Critical patent/EP0024542B1/fr
Expired 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
    • H01H33/562—Means for avoiding liquefaction or for disposing of liquefaction products

Definitions

  • the invention relates to a gas pressure switch of the type mentioned in the preamble of claim 1.
  • the purpose of the heating device provided for the extinguishing gas is to prevent condensation of the pressurized extinguishing gas and the associated reduction in its density and dielectric strength at low ambient temperatures.
  • Such gas switches are known for example from DE-OS 28 25 744 and from GB-PS 1.229.036.
  • the extinguishing gas heated by the heating device rises by thermosiphon effect in a chimney-like pipeline running through the support insulator in the longitudinal direction to the switching chamber, while from this the cooler or the cooled gas in the between the inner wall of the support insulator and the outer wall of the Pipe free jacket space sinks back to the heater.
  • the support insulators have respectable heights, so that an effective and sufficiently rapid circulation of the extinguishing gas heated by the heating device (without further aids) requires sufficient flow cross sections of both the pipeline and the jacket space. This in turn requires a larger one Dimensioning the diameter of the support insulator than would be necessary due to its purely mechanical stress.
  • the switching chamber is supported horizontally on two tubular support insulators.
  • the interior of the first of these support insulators only serves as an exhaust space for the switching gases and is only opened via a valve during a switch-off stroke.
  • the interior of the second support insulator also serves to supply the heated and pressurized quenching gas to the switching chamber and to return the cooler or cooled quenching gas from the switching chamber back to the heating device.
  • the two flow paths in the interior of the second support insulator run directly next to one another and are not separated from one another by a partition.
  • the heated extinguishing gas which is further compressed by a blower or a compressor, is blown upward in a jet via a nozzle, and the suction side of the blower or the compressor draws cooler or cooled quenching gas from the interior of the second support insulator at a location adjacent to the nozzle .
  • one purpose of the present invention is to provide a switch of the type mentioned in the introduction, in which a sufficiently rapid circulation of the extinguishing occurs without increasing the cross section of the tragisolaror due to the effect of the heating device gases forms, the length of the support insulator is hardly an obstacle to this circulation.
  • the compressed gas switch 10 shown has a support housing 11 which is at ground potential and on which a tubular, upright support insulator 12 is flanged tightly, the height of which is essentially dependent on the nominal voltage and also on the type of installation for which the switch 10 is intended.
  • the support insulator 12 carries a switching chamber 13 arranged vertically here, which is enclosed by a tubular insulator 14 and is sealed at the top with a connecting flange 15. Between the insulator 14 and the supporting insulator 12 there is a lower connecting flange 16 which is tightly connected to the latter.
  • a set 17 with which Upper connecting flange 15 electrically connected contact pieces and a set 18 movable contact pieces are arranged, which are electrically connected to the lower connecting flange 16 and which are associated with a movable blowing nozzle 19 and a pump cylinder 20.
  • a push and pull rod 21 is coupled to the set 18 of movable contact pieces, which extends downward out of the switching chamber 13 and is anchored at the bottom to a push and pull tube 22 made of an insulating material, which at that time was connected via a further rod 23 and a connecting rod 24 is coupled to a crank 25 of a drive, not shown.
  • a compression spring 26 supported at the top in the support housing 11 and at the bottom on the rod 23 serves as an energy store for the switch-off stroke.
  • the switching chamber 13 and the interior of the support insulator 12 and the support housing 11 are sealed off from the outside, but are in flow communication with one another and contain an extinguishing gas under a pressure of about 5-20 bar, for example SF 6. As already mentioned in the introduction, it is It is important to avoid condensation of the extinguishing gas at lower ambient temperatures with such switches.
  • a heating device 27 which is electrically connected to the support housing 11 and is also connected to earth potential.
  • a heating - element for example an electric heating coil 28 which is arranged in a downwardly open tubular section 29th
  • This pipe section 29 is arranged coaxially and with radial play in a cup-shaped housing 30 - preferably made of a material which is poorly thermally but sufficiently electrically conductive - and is connected with its upper end to a bend 31, to which a radial pipe 32 leading out of the housing 30 is connected.
  • the tube 32 leads to a radial bore 33 in the flange 34 of the support housing, to which the support insulator 12 is tightly attached.
  • a connection line 35 Connected to the top of the housing 30 is a connection line 35 which is arranged next to the support insulator 12 and parallel to it, and which establishes a flow connection between the heating device 27 and the switching chamber 13.
  • this connecting line 35 has a first, tubular insulator 36, a metallic connecting sleeve 38 fastened at the level of the lower connecting flange 16 and to it via a strut 37, and a second one, in addition to the insulator 14 and in parallel this arranged tubular insulator 39, the upper end of which is connected to a metallic connecting piece 42 provided with cooling fins 40 and a laterally projecting connecting piece 41.
  • the connecting piece 41 is connected in a manner not shown in detail to a bore 43 leading radially out of the upper connecting flange 15, which in turn extends from the upper end of the switching chamber 13. It should be noted that in switch 10 - be it in the switch-on or in the switch-off position shown - apart from the small pressure drop caused by the heating device 27 (when switched on), the extinguishing gas pressure is essentially the same everywhere.
  • the heating coil 28 heats the extinguishing gas which brushes it, which in turn rises in the tube 29 and at the same time draws further extinguishing gas from the connecting line 35 via the jacket space remaining between the housing 30 and the tube 29 and the lower, open end of the tube 29.
  • the heated extinguishing gas passes through the pipe 32 and the bore 33 below in the interior of the T tragisolators 12 and rises through this and through the switching chamber 13, whereby it cools, depending on the ambient temperature, more or less.
  • the somewhat cooled quenching gas now leaves the switching chamber 13 and enters the connecting piece 42 provided with cooling fins, where it is cooled further. As a result, the gas now drops again in the connecting line 35 to the heating device 27.
  • a temperature sensor 44 In the area of the lower end of the connecting line 35, a temperature sensor 44, only shown schematically, may be provided, which e.g. regulates the heating power consumed by the heating coil 28 via a switch 45, e.g. switches on or off.
  • the connecting line 35 in FIG. 2 only extends to the lower connecting flange 16. Accordingly, the connecting line 35 has only the tubular insulator 36 on which the connecting piece 42 is placed tightly. Its connecting piece 41 is connected to a passage 46 formed in the lower connecting flange 16, which in turn extends from the lower end of the switching chamber 13.
  • the entire switch is included in this circulation path.
  • This embodiment is therefore particularly suitable for outdoor installation in areas where particularly low ambient temperatures are to be expected.
  • the somewhat less complex embodiment of FIG. 2 on the other hand, is more suitable for installation in areas in which extremely low ambient temperatures are not to be expected.
  • extinguishing gas circulation can be increased using known means, such as a pump or fan, which are not shown in the drawings.
  • This increased extinguishing gas circulation can be advantageous both in extremely cold weather and in the event of a high current load on the compressed gas switch, in which case the heating coil 28 is switched off by the temperature sensor 44 and the switch 45.

Landscapes

  • Circuit Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Glass Compositions (AREA)
  • Vehicle Body Suspensions (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Control Of Combustion (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP80104263A 1979-08-30 1980-07-19 Interrupteur à gaz comprimé Expired EP0024542B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104263T ATE1401T1 (de) 1979-08-30 1980-07-19 Druckgasschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH785779A CH641292A5 (de) 1979-08-30 1979-08-30 Druckgasschalter.
CH7857/79 1979-08-30

Publications (2)

Publication Number Publication Date
EP0024542A1 true EP0024542A1 (fr) 1981-03-11
EP0024542B1 EP0024542B1 (fr) 1982-07-28

Family

ID=4331475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104263A Expired EP0024542B1 (fr) 1979-08-30 1980-07-19 Interrupteur à gaz comprimé

Country Status (7)

Country Link
EP (1) EP0024542B1 (fr)
JP (1) JPS5636816A (fr)
AT (1) ATE1401T1 (fr)
CA (1) CA1140191A (fr)
CH (1) CH641292A5 (fr)
DE (1) DE3060706D1 (fr)
ZA (1) ZA805057B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582145A1 (fr) * 1985-05-15 1986-11-21 Alsthom Disjoncteur a hexafluorure de soufre fonctionnant dans un environnement a tres basse temperature
EP0204180A1 (fr) * 1985-05-15 1986-12-10 Alsthom Disjoncteur à hexafluorure de soufre fonctionnant dans un environnement à très basse température
CN103779132A (zh) * 2013-01-22 2014-05-07 上海乐研电气科技有限公司 一种用于寒冷地区的六氟化硫高压断路器
EP2715892B1 (fr) 2011-05-24 2017-07-26 Schneider Electric Industries SAS Appareillage electrique a isolation gazeuse ayant un composé fluoré

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0382922U (fr) * 1989-12-12 1991-08-23

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358104A (en) * 1964-10-29 1967-12-12 Westinghouse Electric Corp Heating means for compressed-gas circuit interrupters
CH475644A (fr) * 1966-11-03 1969-07-15 Merlin Gerin Disjoncteur à gaz comprimé à circuit fermé
DE1943218A1 (de) * 1969-08-20 1971-03-04 Siemens Ag Druckgasschalter
GB1229036A (fr) * 1968-07-23 1971-04-21
US3742169A (en) * 1970-01-30 1973-06-26 Siemens Ag Device for compressed gas circuit breaker
FR2203157A1 (fr) * 1972-10-12 1974-05-10 Bbc Brown Boveri & Cie
FR2404907A1 (fr) * 1977-09-28 1979-04-27 Sprecher & Schuh Ag Disjoncteur haute tension a gaz comprime pour l'exterieur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4936751A (fr) * 1972-08-10 1974-04-05
JPS5113217A (ja) * 1974-07-23 1976-02-02 Shinko Electric Co Ltd Dejitaruyokasetsutoshikijikiteepuno untenseigyohoho

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358104A (en) * 1964-10-29 1967-12-12 Westinghouse Electric Corp Heating means for compressed-gas circuit interrupters
CH475644A (fr) * 1966-11-03 1969-07-15 Merlin Gerin Disjoncteur à gaz comprimé à circuit fermé
GB1229036A (fr) * 1968-07-23 1971-04-21
DE1943218A1 (de) * 1969-08-20 1971-03-04 Siemens Ag Druckgasschalter
US3742169A (en) * 1970-01-30 1973-06-26 Siemens Ag Device for compressed gas circuit breaker
FR2203157A1 (fr) * 1972-10-12 1974-05-10 Bbc Brown Boveri & Cie
FR2404907A1 (fr) * 1977-09-28 1979-04-27 Sprecher & Schuh Ag Disjoncteur haute tension a gaz comprime pour l'exterieur

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582145A1 (fr) * 1985-05-15 1986-11-21 Alsthom Disjoncteur a hexafluorure de soufre fonctionnant dans un environnement a tres basse temperature
EP0204180A1 (fr) * 1985-05-15 1986-12-10 Alsthom Disjoncteur à hexafluorure de soufre fonctionnant dans un environnement à très basse température
EP2715892B1 (fr) 2011-05-24 2017-07-26 Schneider Electric Industries SAS Appareillage electrique a isolation gazeuse ayant un composé fluoré
CN103779132A (zh) * 2013-01-22 2014-05-07 上海乐研电气科技有限公司 一种用于寒冷地区的六氟化硫高压断路器
CN103779132B (zh) * 2013-01-22 2019-09-06 上海乐研电气有限公司 一种用于寒冷地区的六氟化硫高压断路器

Also Published As

Publication number Publication date
EP0024542B1 (fr) 1982-07-28
CH641292A5 (de) 1984-02-15
ATE1401T1 (de) 1982-08-15
DE3060706D1 (en) 1982-09-16
JPS5636816A (en) 1981-04-10
CA1140191A (fr) 1983-01-25
ZA805057B (en) 1981-08-26

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