EP0064425B1 - Interrupteur à arc tournant dans un gaz isolant - Google Patents

Interrupteur à arc tournant dans un gaz isolant Download PDF

Info

Publication number
EP0064425B1
EP0064425B1 EP19820400548 EP82400548A EP0064425B1 EP 0064425 B1 EP0064425 B1 EP 0064425B1 EP 19820400548 EP19820400548 EP 19820400548 EP 82400548 A EP82400548 A EP 82400548A EP 0064425 B1 EP0064425 B1 EP 0064425B1
Authority
EP
European Patent Office
Prior art keywords
gas
enclosure
deflector
arc
interrupter
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
EP19820400548
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0064425A2 (fr
EP0064425A3 (en
Inventor
Naohiro Konma
Tsutomu Nakayama
Kanji Morishima
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0064425A2 publication Critical patent/EP0064425A2/fr
Publication of EP0064425A3 publication Critical patent/EP0064425A3/fr
Application granted granted Critical
Publication of EP0064425B1 publication Critical patent/EP0064425B1/fr
Expired 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
    • H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
    • H01H33/982—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow in which the pressure-generating arc is rotated by a magnetic field

Definitions

  • the invention relates to a rotary arc switch according to the preamble of claim 1.
  • European patent application No. 12.048 describes a switch of the kind mentioned having a blowing coil whose lower front face is equipped with the conductive electrode for phase shift and arc switching.
  • the extinction of the arc results solely from the action of the magnetic field of the coil causing a rapid rotation of the arc on the annular track of the electrode.
  • the breaking capacity of such a switch is limited due to the low thermal expansion of the blowing gas.
  • the object of the invention is to increase the performance of a rotary arc switch.
  • the switch according to the invention is characterized in that it further comprises a transverse partition dividing the interior of the envelope into two adjacent chambers, namely an arc extinguishing chamber in which is located the arc zone, and an expansion chamber communicating with the extinguishing chamber by said channel when the contacts are separated, and that the circulation of gas inside the extinguishing chamber is channeled by a deflector fixed in insulating material and with lateral surface of revolution around the arc zone, and by a member for distributing the gas flow ionized and deflected by the deflector, said member comprising a divisional wall arranged coaxially in the annular space between the casing and the movable contact, and separated respectively from the deflector and the transverse partition by upper and lower passages, so as to impose a loop path on the gas flow.
  • French patent No. 2,479,553 of the applicant already discloses a rotary arc switch and thermal expansion of the blowing gas, having a transverse partition dividing the envelope into a first extinguishing chamber and a second expansion chamber.
  • a tubular screen of conductive material coaxially surrounds the hollow movable contact coaxially, and has at one of its ends a radial flange extending transversely in the direction of the envelope. The opposite end of the screen is secured to the transverse bulkhead.
  • the upper face of the conductive flange is shaped as an annular track facing the coil switching electrode. Tests have shown that the performance of such a switch remains limited, and that gas eddy phenomena in the vicinity of the arc zone affect the stability of the arc and disturb the circulation of the gas due to thermal expansion.
  • the circulation of gas inside the extinguishing chamber of the switch makes it possible to increase the performance of the switch thanks to the control of the gas flow and to an efficient cooling of the gases of blowing.
  • the deflector advantageously has a concave or frustoconical shape extending radially between the envelope and the magnetic means which consists of a coil coaxially surrounding the fixed contact and the electrode.
  • the divisional wall is made of insulating or metallic material and is offset radially with respect to the arc zone by being arranged in the middle of the annular space between the envelope and the movable contact. The arrangement of the divisional wall separates the ionized gases from the arc zone and lengthens the path of the gas by promoting its cooling. When the wall is metallic, the arc remains centered between the electrode and the movable contact, and no initiation occurs on the wall offset during the axial sliding of the movable contact towards the open position.
  • the deionization of the gas inside the extinguishing chamber can be increased by the use of a special distributor member in the form of a grid or a radiator with cooling fins.
  • the wall of the distributor member can be equipped with baffles or corrugations capable of lengthening the path of the gas.
  • a multi-pole rotary circuit breaker 10 or circuit breaker with thermal expansion of the blowing gas comprises a tight casing 12 of elongated shape, filled with insulating gas with high dielectric strength, in particular sulfur hexafluoride.
  • the cylindrical casing 12 of molded insulating material is closed at its ends by a bottom 14 made of conductive material, and by an opposite bottom (not shown).
  • a transverse partition 16 subdivides the interior of the envelope 12 into two superimposed chambers, namely an upper chamber 18 for extinguishing the arc and a lower chamber 20 for expansion.
  • the conductive partition 16 crosses the casing 12 in the middle zone, and its end is shaped as a connection terminal.
  • the bottom 14 carries the opposite pole connection terminal.
  • the upper chamber 18 of the casing 12 contains a fixed contact 22 in the form of a tulip, carried by the bottom 14, and cooperating in the closed position with a movable sliding contact 24.
  • the latter is tubular and passes through the intermediate partition 16 associated with a sliding contact 26 for supplying current.
  • the two fixed contacts and mobile 22,24 are aligned in the axial direction, and the internal exhaust channel 28 of the mobile contact 24 ensures the communication of the two chambers 18, 20 in a position separated from the contacts.
  • the fixed contact 22 is rigidly secured a carcass 30 having an annular recess 32 for housing a coil 34 for magnetic blowing of the arc.
  • the coil 34 coaxially surrounds the fixed contact 22, and its lower front face is associated with an annular electrode 36 for switching on the coil 34.
  • the electrode 36 is made of a good conductive material and is traversed in radial clearance by the movable contact 24 to form a migration path of the arc root.
  • the fixed contact 22 is axially set back from the annular electrode 36, the latter being arranged to alternately switch off the coil 34 in the closed position of the contacts 22, 24, and energize the coil 34 during of the switching of the arc on the electrode 36 at the start of the separation of the contacts 22, 24.
  • the extinguishing chamber 18 also contains a concave and fixed deflector 38 made of insulating material cooperating with a distributor member 40 to channel the gas flow generated during the separation of the contacts by the thermal expansion of the insulating gas. blowing.
  • the concave deflector 38 has a surface of revolution around the longitudinal alignment axis of the contacts, and is arranged radially around the arc extension zone, extending between the part of the lower front face of the blowing coil 34 not covered by the electrode 36 and the internal wall of the casing 12.
  • the insulating material of the deflector 38 does not disturb the distribution of the magnetic flux generated by the coil 34.
  • the concave shape of the deflector 38 can be replaced by a frustoconical surface and can be extended at the level of the casing 12 by a cylindrical hollow part extending towards the intermediate partition 16.
  • the deflector 38 may advantageously include a plurality of radial fins 42 (FIG. 2), staggered at regular intervals along the convex side face.
  • the device 40 for distributing and guiding the gas flow comprises a tubular bushing or wall 44 arranged coaxially in the middle of the annular space between the casing 12 and the movable contact 24 (FIG. 1).
  • the divisional wall 44 is fixed and extends parallel to the longitudinal direction in the axial gap formed between the blowing coil 34 and the transverse partition 16.
  • An upper radial passage 46 and a lower radial passage 48 separate the sleeve 44 from the coil 34 and the partition 16 respectively.
  • the relative position of the deflector 38 and the sleeve 44 requires a predetermined circulation of the blowing gas, and the material of the sleeve 44 can be metallic or insulating.
  • the remoteness of the socket 44 relative to the arc zone avoids any ignition of the arc on the socket in the case where it is metallic.
  • one of the faces or the two opposite faces of the bushing 44 has fins or radial blades 52a or inclined blades 52b whose presence prevents the rotation of the blowing gas in the transverse direction of the chamber 18.
  • the metal bush 44 serves as a cooler and a heat exchanger for cooling the ionized gases. This results in an efficient blowing of the arc, and an increase in the breaking capacity.
  • the distributor member 40 can be produced by a wall or screen of any shape, in particular frustoconical, and equipped with baffles or - corrugations capable of lengthening the path of the ionized gas.
  • the gas is thus cooled during this loop path imposed by the concave deflector 38 and the intermediate curvedaxial sleeve 44, and this results in a circulation of non-ionized gas on the arc.
  • the cooling of the SF6 gas is increased by the use of a distributor member 40 shaped as a radiator (FIGS. 3 and 4).
  • the presence of the deflector 38 associated with the distributing member 40 ensures the control of the thermal expansion caused by the rotating arc, avoids the phenomena of gaseous eddies and reflections on the walls.
  • the arc is thus stabilized in its central position and the combined effect of magnetic blowing by rotation, and pneumatic blowing by circulation of non-ionized gas contributes to the rapid extinction of the arc.
  • the distributing member 40 made of insulating material would be integral with the movable contact 24 during a predetermined stroke.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
EP19820400548 1981-04-20 1982-03-26 Interrupteur à arc tournant dans un gaz isolant Expired EP0064425B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5766081U JPS57170233U (online.php) 1981-04-20 1981-04-20
JP57660/81 1981-04-20

Publications (3)

Publication Number Publication Date
EP0064425A2 EP0064425A2 (fr) 1982-11-10
EP0064425A3 EP0064425A3 (en) 1983-08-17
EP0064425B1 true EP0064425B1 (fr) 1985-12-18

Family

ID=13062048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820400548 Expired EP0064425B1 (fr) 1981-04-20 1982-03-26 Interrupteur à arc tournant dans un gaz isolant

Country Status (3)

Country Link
EP (1) EP0064425B1 (online.php)
JP (1) JPS57170233U (online.php)
DE (1) DE3267975D1 (online.php)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710452B1 (fr) * 1993-09-20 1995-11-24 Merlin Gerin Interrupteur haute tension à arc tournant.
FR2732157B1 (fr) * 1995-03-22 1997-05-09 Schneider Electric Sa Disjoncteur a gaz equipe d'une chambre a autoexpansion et a arc tournant
DE102017212033A1 (de) * 2017-07-13 2019-01-17 Siemens Aktiengesellschaft Gleichstrom-Lichtbogenlöschvorrichtung und elektromechanisches Gleichstrom-Schaltgerät
CN120356791A (zh) * 2025-06-24 2025-07-22 浙江德菱科技股份有限公司 一种物联网智能电力保护设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH641592A5 (de) * 1977-03-24 1984-02-29 Mitsubishi Electric Corp Stromunterbrecher mit lichtbogenloeschender kammer.
FR2422246A1 (fr) * 1978-04-07 1979-11-02 Merlin Gerin Dispositif de coupure pour interrupteur a autosoufflage magnetique et pneumatique de l'arc electrique
FR2441261A1 (fr) * 1978-11-10 1980-06-06 Merlin Gerin Interrupteur a arc tournant
DD140309A1 (de) * 1978-12-05 1980-02-20 Ludwig Rothardt Mittel-und hochspannungs-leistungsschalter mit differentieller rotation des schaltlichtbogens
JPS5923605B2 (ja) * 1980-03-28 1984-06-04 日新電機株式会社 ガスしや断器

Also Published As

Publication number Publication date
DE3267975D1 (en) 1986-01-30
EP0064425A2 (fr) 1982-11-10
EP0064425A3 (en) 1983-08-17
JPS57170233U (online.php) 1982-10-26

Similar Documents

Publication Publication Date Title
EP0388323B1 (fr) Disjoncteur électrique à auto-expansion et à gaz isolant
EP0462024B1 (fr) Disjoncteur électrique à autoexpansion et à rotation de l'arc
FR2814588A1 (fr) Interrupteur de circuit possedant une fonction hybride d'extinction d'arc
EP0385886A1 (fr) Disjoncteur à arc tournant et à effet centrifuge du gaz d'extinction
EP0331587A1 (fr) Disjoncteur électrique à autosoufflage par pistonnage ou expansion de gaz isolant
FR2616957A1 (fr) Chambre d'extinction d'arc a pression elevee
EP0206882A1 (fr) Disjoncteur basse tension à coupure améliorée
EP0179834A1 (fr) Dispositif interrupteur a ecran de coupure d'arc.
FR2576142A1 (fr) Disjoncteur a haute tension, a gaz comprime, a energie de manoeuvre assistee par l'effet thermique de l'arc
EP0817224B1 (fr) Dispositif de coupure pour un disjoncteur électrique à forts calibres
EP0789928B1 (fr) Disjoncteur a haute tension et a autosoufflage de l'arc
EP0064425A2 (fr) Interrupteur à arc tournant dans un gaz isolant
EP0768692B1 (fr) Dispositif électrique à gaz isolant et à autoexpansion
EP0095406B1 (fr) Interrupteur à arc tournant et à aimant permanent
EP0004213B2 (fr) Dispositif d'extinction d'arc à autosoufflage pneumatique et magnétique
EP0037765A1 (fr) Interrupteur à arc tournant par action d'un aimant permanent
FR2542918A1 (fr) Interrupteur a arc tournant a circulation des gaz ionises
EP0734035B1 (fr) Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant
CA2101214C (fr) Disjoncteur a deux chambres de coupure concentriques
FR2479553A1 (fr) Interrupteur a arc tournant et a expansion thermique du gaz de soufflage
FR2460537A1 (fr) Interrupteur a soufflage pneumatique de l'arc par expansion thermique des gaz de soufflage
FR2575323A1 (fr) Disjoncteur a gaz comprime
FR2623657A1 (fr) Disjoncteur a autosoufflage par expansion de gaz isolant, equipe d'un ecran de repartition de champ electrique
FR2774805A1 (fr) Disjoncteur de moyenne ou de haute tension comportant une chambre de coupure a tenue dielectrique amelioree
EP0101371A1 (fr) Interrupteur électrique à arc tournant

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19830311

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: H01H 33/98

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL SE

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 3267975

Country of ref document: DE

Date of ref document: 19860130

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910331

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920316

Year of fee payment: 11

Ref country code: FR

Payment date: 19920316

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19920319

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920326

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920430

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19920512

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19921001

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19930331

Ref country code: CH

Effective date: 19930331

Ref country code: BE

Effective date: 19930331

BERE Be: lapsed

Owner name: MERLIN GERIN

Effective date: 19930331

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19931130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19931201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 82400548.2

Effective date: 19931008