CN100573775C - The electric switchgear of cut-off gases recirculation - Google Patents
The electric switchgear of cut-off gases recirculation Download PDFInfo
- Publication number
- CN100573775C CN100573775C CNB2005101297529A CN200510129752A CN100573775C CN 100573775 C CN100573775 C CN 100573775C CN B2005101297529 A CNB2005101297529 A CN B2005101297529A CN 200510129752 A CN200510129752 A CN 200510129752A CN 100573775 C CN100573775 C CN 100573775C
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- fin
- pipe
- electric switchgear
- electric
- switchgear according
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Classifications
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- 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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/342—Venting arrangements for arc chutes
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- 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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/346—Details concerning the arc formation chamber
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- 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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0235—Contacts and the arc extinguishing space inside individual separate cases, which are positioned inside the housing of the circuit breaker
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
- H01H73/045—Bridging contacts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Patch Boards (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The present invention relates to a kind of electric arc disconnecting apparatus, comprise: be arranged in the pair of separable electrical contact (32,33) in the open space (35), piling up of at least two deionization fin (1), described fin is positioned at arc chute (10) inside and separates each other by swapace (2), and at least one is removed pipe (3) and is connected at least one swapace (2) via at least one removal hole (4).Described removal pipe (3) extends to opening (18) along at least one sidewall (11) from described removal hole (4).The gas access of described pipe (3) along x axle (x) from described pipe has cross section (A) substantially invariable or that increase to their outlet.Described opening (18) equals the maximum cross section (A) of described pipe (3) at least and locatees towards described electrical contact (32,33).
Description
Technical field
The present invention relates to a kind of electric switchgear, comprise: housing with vertical geometric reference plane, be arranged in the pair of separable electrical contact in the open space, towards the open arc chute of described open space, two parallel side walls that described arc chute can be by being placed on each side of geometric reference plane, describe away from rear wall, diapire and the roof of described open space location.Described arc chute comprises piling up of at least two deionization fins that separate each other by swapace, and each fin has design and is used for being exposed to leading edge under the electric arc.At least one swapace is removed the hole via at least one and is connected at least one removal pipe.
Background technology
The inner electric leakage that exists of switching device such as circuit-breaker, switch or contactor causes its electrical contact to disconnect at a high speed.This high-speed separation of contact is accompanied by the generation of electric arc usually.The energy of electric arc and the gas release of following described electric arc to take place produce big stress and damage described device easily at described mechanism place.
For thereby the time that reduces the short circuit appearance also reduces the thermal stress that electric switchgear bears, arcing voltage is increased as quickly as possible up to it to become greater than applied voltage.This causes short circuit current to be cancelled.Then, the dielectric resistance of air can prevent backfire or other starting the arc between separate contacts.
Electric arc must fast as far as possible cooling be kept away from electrical contact simultaneously.This cooling realizes by electric arc is placed in the arc chute that usually described arc chute comprises a folded metallic plate, is referred to as the fin that deionizes.In fact, just the electric arc that produces since the electric power that bring out in the magnetic field that the electric current that flows in the conductor produces be pushed in the arc chute.
When electric arc was moved, the latter was tending towards between the sidewall of arc chute usually the path movement of the recess that exists in fin.These recesses have encouraged electric arc moving to the arc chute bottom.In addition, piling up of fin makes electric arc be disintegrated and make things convenient for their insertions in arc chute.During whole opening circuit, fin provides exchange surface for electric arc.When electric arc advances in the arc chute, thereby it is tending towards expanding and pours in whole free space.Interact by the periphery with electric arc, fin can comprise this expansion.When electric arc cooled off, arcing voltage increased.In addition, the pressure that opens circuit in the space increases greatly.
Simultaneously, the generation of electric arc causes the generation of a large amount of metal vaporss or gas, if their not removed words, they may cause the link electric arc between the electric switchgear phase place especially and produce blast.
Numerous existing solutions provides at least one to be used for described gas is driven away near the pipe outside the zone of contact.These gases are dispersed outside the electric switchgear usually.
Though these solutions provide some advantages, yet they have the risk that produces public hazards in the place of placing switching device.In fact, when these gases also heat during with high ionization, they can produce harmful result.
In order to prevent to pollute external environment condition, other solutions have proposed internal gas recirculation (GB2,285,889, US5,731,561 and FR1,400,079).
There is some shortcoming in these solutions.This internal gas recirculation is accompanied by the increase of electric switchgear volume usually.In fact, gas is directed in the particular space of locating above arc chute usually.In addition, be used for the pipe of guiding gas, because their geometry can be brought out the pressure trap, the removal that this pressure trap can cause described gas is bad or slow down.
In order to prevent that the electric arc repeatedly between the contact from striking sparks again, arc chute comprises the deionization fin with optimised shape.In fact, some document (FR2,839,195) discloses the recess that stops by the chimney-like ventilation hole, and it is tending towards stable arc in away from the zone of contact open space.Yet the shape of recess is characterized in that existing from electric arc producing the passage of distinguishing the chimney-like ventilation hole, can produce hot gas and the steam that is sent to contact open zone direction and therefore cause electric arc to be leaked to contact from arc chute.This leakage is accompanied by sparking again repeatedly.
Summary of the invention
The objective of the invention is to comprise the gas re-circulation device in this electric switchgear inside for thereby the shortcoming that overcomes prior art has proposed a kind of electric switchgear.
According to the present invention, described at least one removal pipe of described electric switchgear extends to opening along at least one sidewall from described at least one removal hole, the gas access of described pipe along the z axle from described pipe has cross section substantially invariable or that increase to their outlet, and described opening equals the maximum cross section of described pipe at least and locatees towards the electrical contact of described open space.
Preferably, each swapace of described arc chute comprises that at least one is connected to the removal hole that at least one removes pipe.
Preferably, described electric switchgear comprises that at least two are removed pipe, and at least one pipe extends along each sidewall of described arc chute.
Preferably, the swapace of described arc chute comprises that at least two are removed the hole, and at least one hole is connected to each removal pipe that extends along each wall.
Preferably, in the zone that described removal hole comprises between described rear wall and described fin jack shaft.
Preferably, described removal hole is arranged in described sidewall.
Preferably, described removal hole is arranged in described rear wall.
Described removal pipe has the shape of substantially parallel tubulose.
Particular embodiments of the inventions herein, the free leading edge of at least two fins limits the open recess of asymmetric shape and forms two lateral branchings, when described fin is staggeredly stacked, the described recess that obtains has by this way formed the ventilation hole of at least one chimney-like, and its air channel is closed in the plane vertical with the described chimney-like ventilation hole longitudinal axis substantially.
Preferably, described electric switchgear comprises at least two aligned region along the z axle, described aligned region at least one lateral branching of first fin and with respect to described first fin between at least one lateral branching of second fin of its longitudinal axis Rotate 180 degree.
Preferably, described electric switchgear comprises at least one overlay region along the z axle, described overlay region at least one lateral branching of first fin and with respect to described first fin between at least one lateral branching of second fin of its longitudinal axis Rotate 180 degree.
Preferably, the free leading edge of described fin contacts twice at least with the longitudinal axis of described fin.
Preferably, the free leading edge of the described fin longitudinal axis of the described fin of cutting twice at least.
The free leading edge of described recess limits towards first conical forward portion branch of open space opening and second vertical rear section of extending towards rear wall, and described first conical forward portion branch is cut by the longitudinal axis of described fin.
Preferably, each fin approaches another fin location about its longitudinal axis Rotate 180 degree.
Description of drawings
The following description according to a particular embodiment of the present invention, it is more apparent that other advantages and feature will become, and embodiments of the invention only provide with non-limiting instance and represent in the accompanying drawings, wherein:
Fig. 1 representative is according to the end view of the electric switchgear of first preferred embodiment of the invention;
Fig. 2 representative is along the cross-sectional view of the planar I I of electric switchgear shown in Figure 1;
Fig. 3 representative is along the cross-sectional view of the plane JJ of electric switchgear shown in Figure 2;
Fig. 4 A represents the detail drawing of the deionization fin of electric switchgear shown in Figure 1;
The detail drawing that Fig. 4 B representative is piled up according to the deionization fin of Fig. 4 A;
Fig. 5 A, 5B represent the detail drawing that piles up according to the fin of the electric switchgear of first preferred embodiment of the invention variant and deionization fin respectively;
Fig. 6 A representative is according to the detail drawing of the deionization fin of the electric switchgear of second preferred embodiment;
The detail drawing that Fig. 6 B representative is piled up according to the deionization fin of Fig. 6 A;
Fig. 7 A, 7B represent the detail drawing that piles up according to the fin of the electric switchgear of second preferred embodiment of the invention variant and deionization fin respectively;
Fig. 8 A represents other embodiment of the deionization fin of this arc chute to 10B;
Figure 11 representative is according to other embodiment of the electric switchgear of Fig. 1.
Embodiment
According to first preferred embodiment shown in Fig. 1,2 and 3, this electric switchgear 30 comprises the housing of being made by molded plastic material 31, has arranged at least one stationary contacts 32 that is associated with at least one movable contact 33 in this housing.One or more fault-locating unit especially for the fault-locating unit that short circuit is surveyed, act on the actuating mechanism 34 of control movable contact 33 unlatchings.
This housing 31 is because its shape forms vertical geometric reference plane xz.
In the embodiment shown in this, electric switchgear comprises two U type stationary contacts 32 that are connected respectively to electric connection terminal.The movable contact 33 of effect translation that can be by actuating device 34 can be electrically connected to two stationary contacts 32.Movable contact 33 has two contact zones 36, and each contact zone can be cooperated with stationary contacts 32 respectively.Therefore, corresponding with the space of the contact zone 36 of arranging stationary contacts 32 and being associated with movable contact 33, form two open spaces 35.
In addition, each open space 35 all is associated with arc chute 10.Can limit by two parallel side walls 11 that are placed on vertical geometric reference plane each side of xz, rear wall 6, diapire 7 and the roof 8 of locating towards open space 35 open arc chutes 10 away from open space 35.
Each fin 1 comprises that design is used for being exposed to the free leading edge 5 of electric arc.This free leading edge 5 preferably forms open recess 9, and the front surface of this recess along the direction of the longitudinal axis 12 from arc chute 10 extends to rear wall 6.This recess 9 limits two lateral branching 1a, 1b.
Fin is made by the electric conducting material based on steel.The deionization fin 1 that piles up each other separates each other by swapace 2.The thickness of each swapace 2 is less times greater than the thickness of fin.
In a preferred embodiment of the invention, at least one swapace 2 is removed hole 4 via at least one and is connected at least one removal pipe 3.Described at least one removal pipe 3 design on the one hand is used for removing gases from arc chute 10, is used on the other hand via contact 32, the 33 place injecting gas of opening 18 at open space 35.In addition, described at least one removal pipe 3 is removed hole 4 along at least one sidewall 11 from least one and is extended to opening 18.Described opening 18 is towards electrical contact 32,33 location of open space 35.
Then, gas flow is passed and is comprised that at least one removes hole 4, at least one removes the effuser of pipe 3 and at least one opening 18.Described removal pipe 3 has cross section A constant or that increase on their whole length and along the x axle.In addition, preferably, described removal pipe 3 also has constant cross section along y axle and z axle.In other words, the cross section of described pipe all is constant from the inlet of gas to outlet basically.Preferably, the cross section of described pipe can increase.Then, opening 18 equals the maximum cross section A of described pipe at least.
Usually, the cross section of accepting the effuser of gas must keep constant at least or increase.Therefore this geometrical property has strengthened the gas flow from swapace 2, and has limited the generation of the pressure trap (pressure trap) that may form along effuser.Reducing of described effuser cross section particularly removing pipe 3 or opening 18 places, may cause the generation of pressure trap.These pressure traps can make advancing of gas and advancing of electric arc slow down.
Preferably, in the preferred embodiment of the present invention shown in Fig. 1-3, each swapace 2 is removed hole 4 via at least one and is connected at least one removal pipe 3.The shape and size of removing hole 4 are for like this, and promptly air-flow can not make electric arc pass through these holes.For fear of between the fin 1 because electric arc and short circuit, remove the hole and form and be not communicated with each other in mode independently.
Preferably, occur at least two and remove pipe 3, so at least one pipe 3 is along each sidewall 11 extensions of arc chute 10.In the embodiment shown in Fig. 1 and 2, remove pipe from removing hole 4 to opening 18, from diapire 8 to roof 7 and extend along sidewall 11 near each of sidewall 11 location.
Shown in Fig. 1-3 according to a preferred embodiment of the invention in, used two to remove pipe 3.Remove each sidewall 11 location that pipe 3 approaches arc chute 10 for one.Each swapace 2 comprises that at least one is connected to the removal hole 4 of removing pipe 3.The removal hole 4 that is positioned in the sidewall 11 is positioned in the zone that comprises between the jack shaft 13 of rear wall 6 and fin 1.In addition, these pipes are cuboid (parallelepipedic) shape substantially.
In order to prevent the sparking again repeatedly of electric arc between the contact, and be kept away from electrical contact simultaneously in order to cool off electric arc as quickly as possible, arc chute 10 can comprise deionization fin known shape and that particularly have the V-type shaped recess.
According to a particular embodiment of the invention, the recess 9 of at least two fins is symmetric shapes and comprises two parts.It comprises that facing first conical forward portion that is positioned at the contact 32,33 in the open space 35 divides 9a and second narrower vertical rear section 9b.
Preferably, shown in Fig. 6 A and 7A, the leading edge 5 that advances along the flat surfaces of described at least two fins contacts twice at an a, b place at least with the longitudinal axis 12 of this fin.According to other embodiments of the invention, shown in Fig. 4 A and 5A, leading edge 5 is the longitudinal axis of selecting described at least two fins of a, b, c place cutting 12 3 times.
In addition, recess 9 realizes in such a way, that is, when two fins are staggeredly stacked, along the z axle at the lateral branching 1a of first fin 1 with place between at least one lateral branching 1a of second fin 1 of intervening portion and have at least two aligned region a and b.When fin when its longitudinal axis 12 Rotate 180s are spent, fin is in intervening portion with respect to another fin.First aligned region is preferably located among the forward part 13a of fin 1.
Preferably, shown in Fig. 4 A and 5A, when the leading edge 5 three times cutting longitudinal axis 12, at the lateral branching 1a of first fin 1 with place between at least one lateral branching 1a of second fin 1 of intervening portion and have three aligned region a, b and c.Then, the overlay region 50 that has lateral branching 1a.Each fin all comprises overlay region 50, and this overlay region can limit by the intersection point between the leading edge 5 of an a and the b place longitudinal axis 12 and the first lateral branching 1a.
According to these two preferred embodiments of the present invention, described two lateral branching 1a, 1b are located substantially on each side and first conical forward portion of the described longitudinal axis 12 and divide 9a to be cut by the longitudinal axis 12.
In the embodiment shown in Fig. 1-11, all fins that are arranged in arc chute 10 comprise identical recess 9.Piling up with such method of this group fin of arc chute 10 forms, and promptly at least two fins are staggeredly stacked, so the shape of their recess 9 is inconsistent.
Preferably, all fins 1 all are staggeredly stacked, so each fin 1 approaches another fin location about its longitudinal axis 12 Rotate 180 degree.
Because fin 1 asymmetric shape of recess 9 and being staggeredly stacked of described fin, formed the ventilation hole 15 of chimney-like, its air channel is closed in the plane xy vertical with described chimney-like ventilation hole 15 longitudinal axis 16 substantially.
In this embodiment, chimney-like ventilation hole 15 from diapire 8 to roof the 7 whole height that extend across arc chute.
According to the shape of the recess 9 of fin 1, the axis 16 of chimney-like ventilation hole 15 will be more or less near the rear wall 6 of arc chute 10.Preferably, chimney-like ventilation hole 15 is positioned at jack shaft 13 places of fin 1 or surpasses described axis towards rear wall 6.
Switching device is operated in the following manner.When short circuit takes place, because the electromagnetic field of the current induced that flows in the conductor, particularly at stationary contacts 32 places, produce in movable contact 33 movable contact is repelled the electric power of separation point position, this motion can be confirmed by opening actuating mechanism via mechanism 34 subsequently.When the firm generation of the separation of contact 32,33, will between described contact, produce electric arc.This electric arc is pushed into arc chute 10 by electric power.Move in the process of chimney-like ventilation hole 15 and rear wall 6 at it, electric arc remains on the intermediate distance between each sidewall 11, because it is tending towards passing the opening recess 9 between fin.
In addition, set up gaseous exchange, so electric arc can not increased obstruction by pressure towards advancing of rear wall 6 via removing pipe 3.Before movable contact 33 had arrived its final separation point position, the electric arc pin was moved to chimney-like ventilation hole 15 from stationary contacts 32 rapidly.
Gas that in fact, send around electric arc and that exist in swapace 2 is via comprising that the effuser of removing hole 4, removing pipe 3 and opening 18 is injected into open space 35.By effuser remove uniformly and the gas of regular distribution reduced the risk of pressure trap, this pressure trap is the reason that causes gas to advance and advance and slow down with electric arc.Local pressure in electric arc the place ahead increases or in fact the existence of refrigerating gas has caused moving of electric arc to be slowed down.
The gas flow of direction in effuser along the electrical contact 32,33 of open space 35 makes the gas of described compression be depressurized and cooling faster.
The injection that is present in the refrigerating gas at contact 32,33 places in the open space 35 has increased the dielectric strength in this space and has therefore prevented the public hazards that electric arc is struck sparks again.In addition, this injection at the contact place makes open space 35 plasma occur, and arc chute 10 will bear cooling and backflow weakly ionized gas.This makes the rear area of electric arc be cooled but has also caused hot gas to be sent to the place ahead of electric arc.Because electric arc cools off via the rear, therefore, electric arc is tending towards development in face of the heat of ionization gas that is associated with metal vapors, moves and therefore move away from the open zone of contact towards the rear side 6 of arc chute 10.
According to the alternate embodiments of first series, shown in Fig. 6 A and 7A, leading edge 5 extends along the flat surfaces of fin 1, and the recess 9 of the asymmetric shape that forms is being selected the longitudinal axis 12 that described fin is cut at a, b, c, d, e place for five times.Because the asymmetric shape of recess 9 and being staggeredly stacked of described fin of each fin 1 form two chimney-like ventilation holes 15, its air channel 16 is closed in the plane xy vertical with described chimney-like ventilation hole 15 longitudinal axis 16 respectively substantially.
According to the alternate embodiments of second series, shown in Figure 10 A and 10B, leading edge 5 advances along the flat surfaces of fin, and the longitudinal axis 12 of the described fin of recess 9 cutting twice of the asymmetric shape that forms.In addition, the first longitudinal component 9a that is tapered locatees to such an extent that surpass the longitudinal axis 12 of fin 1.
In another alternate embodiments shown in Figure 11, swapace 2 comprise at least one be placed in the rear wall 6 and with remove the pipe 3 removal holes 4 that are connected.According to this embodiment, each swapace 2 comprises that two are removed hole 4; Each hole is connected respectively to removes pipe 3.
In another alternate embodiments, each hole 4 is connected to opening 18 in spontaneous mode via itself removal pipe 3.In fact, each is removed pipe 3 and guarantees with other removals and hold independence.
Claims (15)
1. electric switchgear comprises:
Housing (31) with vertical geometric reference plane (xz),
Be arranged in the pair of separable electrical contact (32,33) in the open space (35),
Towards the open arc chute (10) of described open space (35), described arc chute limits by two parallel side walls (11) that are positioned at each side of geometric reference plane (xz), rear wall (6), diapire (7) and the roof (8) of locating away from described open space (35)
Piling up of at least two deionization fins (1), described fin are positioned at described arc chute inside and separate each other by swapace (2), and each fin has the free leading edge (5) that design is used for being exposed to electric arc,
At least one removes pipe (3), and described removal pipe is removed hole (4) via at least one and is connected at least one swapace (2),
It is characterized in that, described at least one removal pipe (3) extends to opening (18) along at least one sidewall (11) from described at least one removal hole (4), the gas access of described removal pipe (3) along x axle (x) from described removal pipe has cross section (A) substantially invariable or that increase to their outlet, and described opening (18) equals the maximum cross section (A) of described removal pipe (3) at least and locatees towards the electrical contact (32,33) of described open space (35).
2. electric switchgear according to claim 1 is characterized in that, each swapace (2) of described arc chute (10) comprises that at least one is connected to the removal hole (4) that at least one removes pipe (3).
3. electric switchgear according to claim 1 and 2 is characterized in that, it comprises that at least two are removed pipe (3), and at least one removes each sidewall (11) extension of pipe (3) along described arc chute (10).
4. electric switchgear according to claim 3 is characterized in that, the swapace (2) of described arc chute (10) comprises that at least two are removed hole (4), and at least one is removed the hole and is connected to each removal pipe (3) that extends along each sidewall (11).
5. electric switchgear according to claim 1 is characterized in that, described removal hole (4) is arranged in included zone between described rear wall (6) and described fin (1) jack shaft (13).
6. electric switchgear according to claim 5 is characterized in that, described removal hole (4) is arranged in described sidewall (11).
7. electric switchgear according to claim 1 is characterized in that, described removal hole (4) is arranged in described rear wall (6).
8. electric switchgear according to claim 1 is characterized in that, described removal pipe (3) has basic rectangular shape.
9. electric switchgear according to claim 1, it is characterized in that, the free leading edge (5) of at least two described fins (1) limits the open recess (9) of asymmetric shape and forms two lateral branchings (1a, 1b), when described fin (1) when being staggeredly stacked, described recess is realized by this way, the feasible ventilation hole (15) that has formed at least one chimney-like, its air channel is closed in the plane (xy) vertical with described chimney-like ventilation hole (15) longitudinal axis (16) substantially.
10. electric switchgear according to claim 9, it is characterized in that, it comprises at least two aligned region along z axle (z), described aligned region be positioned at least one lateral branching (1a) of first fin and with respect to described first fin between at least one lateral branching (1a) of second fin of its longitudinal axis (12) Rotate 180 degree.
11. according to claim 9 or 10 described electric switchgears, it is characterized in that, it comprises at least one overlay region along z axle (z), described overlay region be positioned at least one lateral branching (1a) of first fin and with respect to described first fin between at least one lateral branching (1a) of second fin of its longitudinal axis (12) Rotate 180 degree.
12., it is characterized in that the free leading edge (5) of described fin (1) contacts twice at least with the longitudinal axis (12) of described fin according to claim 9 or 10 described electric switchgears.
13. electric switchgear according to claim 11 is characterized in that, the free leading edge (5) of described fin (1) is the longitudinal axis of the described fin of cutting twice (12) at least.
14. electric switchgear according to claim 12, it is characterized in that, the free leading edge (5) of described recess (9) limits towards the first conical forward portion branch (9a) of open space (35) opening and second vertical rear section (9b) of extending towards rear wall (6), and the described first conical forward portion branch (9a) is cut by the longitudinal axis of described fin (12).
15. electric switchgear according to claim 1 is characterized in that, each fin is near another fin location about its longitudinal axis (12) Rotate 180 degree.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0412974 | 2004-12-06 | ||
| FR0412974A FR2879016B1 (en) | 2004-12-06 | 2004-12-06 | ELECTRICAL CUTTING DEVICE WITH RECYCLING OF CUTTING GASES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1801423A CN1801423A (en) | 2006-07-12 |
| CN100573775C true CN100573775C (en) | 2009-12-23 |
Family
ID=34952299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101297529A Expired - Fee Related CN100573775C (en) | 2004-12-06 | 2005-12-06 | The electric switchgear of cut-off gases recirculation |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1667179B1 (en) |
| CN (1) | CN100573775C (en) |
| AT (1) | ATE415691T1 (en) |
| DE (1) | DE602005011234D1 (en) |
| ES (1) | ES2315824T3 (en) |
| FR (1) | FR2879016B1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2923649B1 (en) | 2007-11-13 | 2009-12-11 | Schneider Electric Ind Sas | CUTTING CHAMBER AND CIRCUIT BREAKER EQUIPPED WITH SUCH CUTTING CHAMBER. |
| BR112012006182B1 (en) | 2009-09-18 | 2019-10-22 | Schneider Electric Ind Sas | cutting device having at least one unipolar cutting block comprising a contact bridge and circuit breaker; |
| CN102013365B (en) * | 2011-01-07 | 2013-05-01 | 上海诺雅克电气有限公司 | Arc control device of circuit breaker |
| EP2650894B1 (en) * | 2012-04-12 | 2018-06-06 | ABB Oy | Electric current switching apparatus |
| EP2650893A1 (en) * | 2012-04-12 | 2013-10-16 | ABB Oy | Electric current switching apparatus |
| AT13887U1 (en) * | 2012-08-07 | 2014-11-15 | K & N Schalterentwicklungsgesellschaft M B H | Power switch with extinguishing section for extinguishing an electric arc |
| US9622374B2 (en) | 2014-08-08 | 2017-04-11 | General Electric Company | Electrical equipment and a method of manufacturing |
| US9865418B2 (en) * | 2015-12-08 | 2018-01-09 | Siemens Industry, Inc. | Circuit breakers, arc expansion chambers, and operating methods |
| FR3098008A1 (en) * | 2019-06-26 | 2021-01-01 | Schneider Electric Industries Sas | Electrical switching apparatus comprising a filtering device |
| CN113192778B (en) * | 2021-05-12 | 2022-05-27 | 上海西门子高压开关有限公司 | Hot gas flow exhaust device for arc extinguish chamber, arc extinguish chamber and gas insulated switch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1147076A (en) * | 1957-06-01 | 1957-11-19 | Electric circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT382741B (en) * | 1985-11-15 | 1987-04-10 | Felten & Guilleaume Ag Oester | ARC EXTINGUISHING CHAMBER |
| DE4333278A1 (en) * | 1993-09-24 | 1995-03-30 | Siemens Ag | Circuit breaker with an arc extinguisher |
-
2004
- 2004-12-06 FR FR0412974A patent/FR2879016B1/en not_active Expired - Fee Related
-
2005
- 2005-10-20 DE DE602005011234T patent/DE602005011234D1/en active Active
- 2005-10-20 ES ES05354037T patent/ES2315824T3/en active Active
- 2005-10-20 AT AT05354037T patent/ATE415691T1/en not_active IP Right Cessation
- 2005-10-20 EP EP05354037A patent/EP1667179B1/en not_active Not-in-force
- 2005-12-06 CN CNB2005101297529A patent/CN100573775C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1147076A (en) * | 1957-06-01 | 1957-11-19 | Electric circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2879016A1 (en) | 2006-06-09 |
| CN1801423A (en) | 2006-07-12 |
| ES2315824T3 (en) | 2009-04-01 |
| EP1667179A2 (en) | 2006-06-07 |
| EP1667179A3 (en) | 2007-08-08 |
| FR2879016B1 (en) | 2007-02-09 |
| EP1667179B1 (en) | 2008-11-26 |
| ATE415691T1 (en) | 2008-12-15 |
| DE602005011234D1 (en) | 2009-01-08 |
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