EP2572364A1 - Düse für das ausblasen eines elektrischen lichtbogens - Google Patents

Düse für das ausblasen eines elektrischen lichtbogens

Info

Publication number: EP2572364A1
Authority: EP; European Patent Office
Prior art keywords: composite material; inorganic filler; nozzle; total mass; nozzle according
Prior art date: 2010-05-20
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

EP11724145A

Other languages

English (en)

French (fr)

Other versions

EP2572364B8 (de

EP2572364B1 (de

Inventor

Oana Aitken

Chakib Fnineche

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.)

GE Vernova GmbH

Original Assignee

Alstom Technology 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.)

2010-05-20

Filing date

2011-05-19

Publication date

2013-03-27

2011-05-19 Application filed by Alstom Technology AG filed Critical Alstom Technology AG

2013-03-27 Publication of EP2572364A1 publication Critical patent/EP2572364A1/de

2016-02-10 Application granted granted Critical

2016-02-10 Publication of EP2572364B1 publication Critical patent/EP2572364B1/de

2016-03-16 Publication of EP2572364B8 publication Critical patent/EP2572364B8/de

Status Active legal-status Critical Current

2031-05-19 Anticipated expiration legal-status Critical

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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7076—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by the use of special materials

Definitions

insulating nozzles described in WO 2009080123 which are constituted from a single material which consists of a composite material comprising a matrix of polytetrafluoroethylene loaded into different categories of additives (additives of a nature to reduce the conductivity electric nozzle and additives conferring specific optical properties).
the nozzle formed from this material has a low relative permittivity as a whole, which does not allow to generate a significant change in the electric field at the arcing contacts and thus a decrease in electrical stress at the level of the latter. .
a neck portion defining a gap of the arc, which arc is formed by the separation of said first arcing contact and said second arcing contact, said neck portion having its internal volume occluded by said first contact arc when the circuit breaker is in the closed position and forming a separation space between said first arcing contact and said second arcing contact, when the circuit breaker is in the open position;
the neck portion comprises a fluorinated polymeric material having a relative permittivity of from 1.9 to 3 and the upstream end portion and the downstream end portion comprise a fluorinated polymeric material having a relative permittivity ranging from 3 , 5 to 10, preferably 5 to 7.
the increase in the relative permittivity of the upstream and downstream end parts relative to that of the neck portion has the effect of reducing the value of the electric field at the arcing contacts, which, after opening, are respectively at the height of the upstream end portion and the downstream end portion. Decreasing the value of the electric field at the arcing contacts allows better electrical isolation between the arcing contacts.
the fluorinated polymeric material used in the composition of the neck portion and the fluorinated polymeric material used in the composition of the downstream and upstream end portions corresponding to the specificity mentioned above in terms of relative permittivity may be composite polymeric materials comprising a fluorinated polymeric base matrix and an appropriate inorganic filler capable of conferring adequate relative permittivity.
the mass proportion of filler in the composite material may be fixed by those skilled in the art so as to obtain a composite material having the relative permittivity values mentioned above.
a composite material comprising a polytetrafluoroethylene polymer matrix comprising an inorganic filler M0 S 2 at a level of 0.01 to 1% by weight relative to the total mass of the material and an inorganic filler S 10 2 at a level of 0.01 to 5% by weight relative to the total mass of the material;
a composite material comprising a polymeric matrix of polytetrafluoroethylene comprising an inorganic filler M0 S 2 at a level of 0.01 to 1% by weight relative to the total mass of the material, preferably from 0.01 to 0.5% by weight relative to the total mass of the material and an inorganic filler AI 2 COO 4 at a level of 0.01 to 5% by weight relative to the total mass of the material.
the feedstock used in the composition of the composite material constituting the downstream and upstream end parts may be chosen from inorganic fillers of the fluoride type, such as CaF 2 , inorganic fillers of the mica type, in particular of the mica muscovite type (such as potassium mica), inorganic fillers of the glass type, for example in the form of glass fibers, inorganic fillers of the ceramic type, such as a mixture ⁇ 2 ⁇ 3 - ⁇ -b 2 ⁇ 3 , graphite and mixtures thereof.
the feedstock used in the composition of the composite material constituting the downstream and upstream end parts may be present in said material at a level of 10 to 35% by weight relative to the total mass of the material.
the arc-blowing nozzles of the invention may be designed by molding (for example, a hydraulic molding or isostatic molding) of a powder mixture comprising a polymer powder and a charge powder intended to enter the process. constitution of the composite materials constituting the different parts of the nozzle followed by sintering of the various molded parts so as to consolidate them.
the invention also relates to a high or medium voltage circuit breaker comprising at least a first arcing contact and at least a second arcing contact and an electric arcing nozzle as defined above. .
FIG. 1 there is partially seen a circuit breaker and more particularly the arc contact parts and the arc-blowing nozzle of the invention.
the arc-blowing nozzle shown in this figure comprises a neck portion 5, i.e., an inner section portion narrowed with respect to the other parts of the nozzle, this neck portion providing separation between a portion of the nozzle portion. upstream 7 and a downstream portion 9.
the internal volume is of cylindrical shape and, in the closed position of the circuit breaker, it is plugged by the fixed arc contact 3 and for a few milliseconds after the separation of the contacts.
the downstream portion 9 comprises a first conical portion 9a immediately succeeding the neck, this conical portion being followed by a second cylindrical portion 9b.
the neck portion comprises a polymeric material having a relative permittivity ranging from 1.9 to 3.

Landscapes

Circuit Breakers (AREA)
Compositions Of Macromolecular Compounds (AREA)

EP11724145.5A 2010-05-20 2011-05-19 Lichtbogenblasdüse Active EP2572364B8 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR1053923A FR2960338B1 (fr)	2010-05-20	2010-05-20	Buse a soufflage d'arc electrique
PCT/EP2011/058211 WO2011144713A1 (fr)	2010-05-20	2011-05-19	Buse a soufflage d'arc electrique

Publications (3)

Publication Number	Publication Date
EP2572364A1 true EP2572364A1 (de)	2013-03-27
EP2572364B1 EP2572364B1 (de)	2016-02-10
EP2572364B8 EP2572364B8 (de)	2016-03-16

Family

ID=43404947

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP11724145.5A Active EP2572364B8 (de)	2010-05-20	2011-05-19	Lichtbogenblasdüse

Country Status (3)

Country	Link
EP (1)	EP2572364B8 (de)
FR (1)	FR2960338B1 (de)
WO (1)	WO2011144713A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3349234B1 (de)	2017-01-17	2020-11-18	General Electric Technology GmbH	Düse gegen elektrische blitzentladungen und schutzschalter mit solch einer düse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2002373561A (ja) *	2001-06-15	2002-12-26	Toshiba Corp	ガス遮断器用ノズルおよびその製造方法
US6696657B2 (en) *	2001-11-21	2004-02-24	Hitachi, Ltd.	Puffer type gas circuit breaker
JP2003257293A (ja) *	2002-03-05	2003-09-12	Toshiba Corp	ガス遮断器
CN101946288B (zh)	2007-12-21	2012-10-10	Abb研究有限公司	用于气体断路器的弱导电喷嘴和其所用的基于ptfe的材料

2010
- 2010-05-20 FR FR1053923A patent/FR2960338B1/fr not_active Expired - Fee Related
2011
- 2011-05-19 WO PCT/EP2011/058211 patent/WO2011144713A1/fr not_active Ceased
- 2011-05-19 EP EP11724145.5A patent/EP2572364B8/de active Active

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011144713A1 *

Also Published As

Publication number	Publication date
FR2960338A1 (fr)	2011-11-25
WO2011144713A1 (fr)	2011-11-24
EP2572364B8 (de)	2016-03-16
FR2960338B1 (fr)	2012-06-29
EP2572364B1 (de)	2016-02-10

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