CN103021706A - Electric switch device with electric arc isolating sleeve - Google Patents
Electric switch device with electric arc isolating sleeve Download PDFInfo
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- CN103021706A CN103021706A CN2012105813536A CN201210581353A CN103021706A CN 103021706 A CN103021706 A CN 103021706A CN 2012105813536 A CN2012105813536 A CN 2012105813536A CN 201210581353 A CN201210581353 A CN 201210581353A CN 103021706 A CN103021706 A CN 103021706A
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- Prior art keywords
- electric arc
- buccal wall
- electric
- arc
- separation sleeve
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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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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an electric switch device with an electric arc isolating sleeve and belongs to the technical field of electrical appliances. The device comprises a shell, an arc extinguishing chamber and a contact arc striking mechanism and is characterized in that the electric arc isolating sleeve is fixedly arranged in the shell and formed by enclosing a first buccal wall, a second buccal wall and a third buccal wall, the first buccal wall and the second buccal wall are arranged in a mutual face-to-face manner and form a containing cavity between the same, an upper arc striking plate, a fixed contact and a movable contact are correspondingly arranged at an opening on the upper portion of the containing cavity, a lower arc striking plate is correspondingly arranged on the lower portion of the containing cavity, the third buccal wall is arranged below the lower arc striking plate, the first buccal wall and the second buccal wall are connected into a whole through the third buccal wall, and a deionization chamber is formed between the outer wall of the electric arc isolating sleeve and the inner wall of the shell. The electric switch device with the electric arc isolating sleeve has the advantages that air-blowing to the moving direction of electric arc is enhanced to form the deionization chamber between the outer wall of the electric arc isolating sleeve and the inner wall of the shell, so that back breakdown of the electric arc is inhibited, and magnetic-blowing to the electric arc can be enhanced through a ferromagnetic part.
Description
Technical field
The invention belongs to technical field of electric appliances, be specifically related to a kind of electric switchgear with electric arc separation sleeve
Background technology
When the electric switchgear open circuit, (material according to contact was different when the electric current (voltage) of circuit surpassed a certain numerical value if be disconnected, its value is also different), will produce electric arc between the contact of switch, electric arc enters in the arc control device and could be extinguished fast, if electric arc can not in time enter arc control device, short circuit current continues to increase, after to a certain degree, the energy that electric arc discharges will make electric switch be damaged and cause the disjunction failure.So in order to improve the breaking capacity of electric switch, require to accelerate the speed that electric arc enters arc control device.Electric switchgear generally comprises the contact regions that produces electric arc, electric arc to the race arc passage of arc control device transition flow warp and cuts apart the arc control device of extinguish arcs, the width that usually will run the arc passage in the prior art with respect to arc control device arrange very narrow, so that run the interior pressure of arc passage much larger than the pressure of arc control device, thereby make electric arc be subject to air-blowing, enter fast arc control device.On the other hand, because the raising of electric switchgear breaking capacity, short circuit current or the voltage of disjunction are more and more higher, switch discharges more high-temperature metal steam in the breaking course, will increase pollution to space outerpace if directly be emitted on switch external, can cause the puncture between the switch busbar when serious, lead to a disaster.If the high-temperature metal steam enters contact regions or runs the arc district, will increase the risk of electric arc back commutation.So the electric switchgear of high breaking capacity needs to strengthen free to disappearing of high-temperature metal gas.Moreover, raising along with the electric switchgear breaking capacity, only rely on the method for air-blowing, more and more be difficult to satisfy the current limliting requirement of electric switchgear, prior art is also installed ferromagnetic parts in contact regions and race arc passage both sides that electric arc produces, by increasing the method to the electric arc magnetic blow-out, further accelerate electric arc to the movement velocity of arc control device.
Existing electric switchgear, be called " tripper of high rating electrical circuit breaker " such as the disclosed name of Chinese Granted publication CN1067487C, this tripper comprises the one pole box, two shells of box are adjacent to each other, limit thus one and be divided into the inner space that is arranged in a plurality of cabins on the varying level, thereby on the direction of arc control device, increase gradually the cross section of arc channel, strengthen arc channel to the air-blowing effect of electric arc.But there is following limitation in this device: at first, although inner venthole and transverse groove are provided, it is free that part high-temperature metal gas can be disappeared in circuit breaker inside,, the upper end of venthole is covered by conductor, and the circulation effect is weakened; For guaranteeing the intensity of housing, the opening size of transverse groove is less, simultaneously, in limited space, in order to guarantee the width of arc control device, the outer wall that is used for the housing of encapsulation arc control device can be very close to the shell of tripper, and available free air space is less between housing and the tripper shell.Above factor all causes tripper inside limited to the liberation that disappears of high-temperature metal gas, and high-temperature metal gas can discharge beyond circuit breaker by external venting simultaneously, and space outerpace is polluted.Secondly, this device needs the cooperation of two shells could realize described purpose, complicated structure, and it is large to take up room.At last, the ferromagnetic parts of this device can only be installed in the space-constrained groove, has reduced ferromagnetic parts to running the effective area of arc passage, and the magnetic blow-out effect that electric arc is subject to is weakened, can not further accelerate the speed that electric arc enters arc control device.
Again for example, the disclosed name of Chinese invention patent Granted publication CN1835151B is called " with the electric assembly equipment of the extinguishing arc mechanism of electric arc precombustion chamber, precombustion chamber plate and current limliting ", it is the convection current that utilizes the high-temperature metal steam to carry out between arc control device and electric arc precombustion chamber, disappears free in circuit breaker inside to the high-temperature metal steam.The shortcoming of this structure is: only have when electric arc to enter arc control device and make the metal vapors in the arc control device reach finite concentration, after gas pressure intensity was higher than the electric arc precombustion chamber, above-mentioned convection current could form.Yet, in order to form described convection current, said structure need to arrange in the upstream of electric arc the convection current opening, and the existence of convection current opening has weakened the electric arc generation and the moving region is contact regions and the gas pressure intensity that runs the arc passage, thereby reduce the air-blowing power that electric arc is subject to, affect the speed that electric arc enters arc control device.In addition, the electric switchgear of said structure is installed in hull outside to ferromagnet, away from electric arc, can weaken the magnetic blow-out power that electric arc is subject to, and, the electric switchgear of said structure will make the high-temperature metal steam carry out convection current between arc control device and electric arc precombustion chamber, precombustion chamber plate opposite shell wall is hang arranges, and how the position of precombustion chamber plate being fixed is a problem that need solve.
Again for example, the disclosed name of Chinese invention patent publication number CN101436495A is called " arc chute and with the circuit breaker of this arc chute ", it can not install permanent magnet between buccal wall and case for circuit breaker place forms in the Ionization chamber that disappears, it is free in the Ionization chamber that disappears the high-temperature metal steam to be disappeared, and suppresses the back commutation phenomenon of electric arc.But, because this structure need to realize by cooperating between buccal wall and the case for circuit breaker the installation of permanent magnet, just can't form the Ionization chamber that disappears in the place that permanent magnet is installed, so the ionized space that disappears that this structure can provide is very limited.
To sum up, the reinforcement that prior art provides has certain conflict to the gas free scheme that disappears to the scheme of electric arc air-blowing and magnetic blow-out with strengthening, and all can not well solve simultaneously three problems.For this reason, the applicant has carried out useful exploration, finds a way to resolve the problem, and technical scheme described below produces under this background
Summary of the invention
Task of the present invention is to provide a kind of electric switchgear with electric arc separation sleeve, and this electric switchgear both can increase the air-blowing to electric arc, accelerates the speed that electric arc enters arc control device; Can for the high temperature free gas provides the Ionization chamber that disappears, suppress the back commutation phenomenon of electric arc again; Further, by at the electric arc separation sleeve ferromagnetic parts being installed, can increasing the method for electric arc magnetic blow-out is further accelerated the speed that electric arc enters arc control device.
Task of the present invention is finished like this, and a kind of electric switchgear with electric arc separation sleeve comprises: shell; If the arc control device that consisted of by a plurality of arc extinguishing grid pieces stacked and that be separated from each other each other in the enclosure; If contact arc striking mechanism in the enclosure, described contact arc striking mechanism comprises fixed contact, moving contact, upper run-on tab and lower run-on tab, described fixed contact is fixed on the shell, be provided with fixed contact at fixed contact, described moving contact is installed on the shell rotationally, be provided with moving contact at moving contact, moving contact is corresponding with fixed contact, one end of described upper run-on tab is connected with fixed contact, the other end of upper run-on tab extends to the top of arc control device, described lower run-on tab is fixed on the shell, be positioned at the below of moving contact, and extend to the bottom of arc control device, between lower run-on tab and upper run-on tab, be formed with the electric arc runway, be characterized in: in described shell, also be installed with an electric arc separation sleeve, this electric arc separation sleeve is by the first buccal wall, the second buccal wall and the 3rd buccal wall enclosure form, wherein: described the first buccal wall and described the second buccal wall are face-to-face setting each other, and be formed with the containing cavity that inserts for for described lower run-on tab between the two, the corresponding described upper run-on tab in the upper opening place of described containing cavity, fixed contact and moving contact, the corresponding lower run-on tab in the place, bottom of described containing cavity, be the 3rd buccal wall below lower run-on tab, by the 3rd buccal wall the first buccal wall and the second buccal wall connected as one; Between the inwall of the outer wall of described electric arc separation sleeve and described shell, be formed with the Ionization chamber that disappears that communicates for described arc control device.
In a specific embodiment of the present invention, also have additional the first baffle plate on the described shell, described the first baffle plate is positioned at the end, rear end of arc control device.
In another specific embodiment of the present invention, also have additional second baffle on the described shell, described second baffle is positioned at a side of described electric arc separation sleeve and corresponding to an end of containing cavity side mouth, and it is other and make the other end of containing cavity side mouth aim at described arc control device that the opposite side of described electric arc separation sleeve is positioned at described arc control device.
In another specific embodiment of the present invention, the first buccal wall, second buccal wall of described electric arc separation sleeve are formed with curved end in the upper end of short transverse, correspondingly, have additional for the first location convex surface that matches with curved end at described shell.
In another specific embodiment of the present invention, also have additional second a location convex surface that is used for matching with described the 3rd buccal wall on the described shell.
Also have in the specific embodiment of the present invention, described the first buccal wall and the second buccal wall are formed with the projection that matches for described lower run-on tab at the inner side surface that faces each other.
In of the present invention and then specific embodiment, described the first buccal wall and the second buccal wall are formed with respectively flange on the outer lateral side that faces each other, being formed with respectively mounting groove between described flange and the first buccal wall and between described flange and the second buccal wall, be installed with ferromagnetic parts in the described mounting groove.
More of the present invention and in specific embodiment, described the first buccal wall or the second buccal wall are formed with flange in arbitrary side of the outer lateral side that faces each other, being formed with mounting groove between described flange and the first buccal wall or between described flange and the second buccal wall, be installed with ferromagnetic parts in the described mounting groove.
In again of the present invention and then specific embodiment, described ferromagnetic parts is permanent magnet plate or ferromagnetic plate.
Of the present invention again more and in specific embodiment, the magnetosheath that is shaped as flat or U-shaped of described ferromagnetic parts.
The present invention is because after adopting technique scheme, the beneficial effect that has: at first, by in the shell of electric switchgear, setting up the electric arc separation sleeve, the containing cavity that is become by three buccal wall enclosures of electric arc separation sleeve defines the space of running the arc road, thereby can increase the draught head that runs between arc road and the arc control device, strengthen the air-blowing to the arc motion direction; Secondly, because the installation of electric arc separation sleeve is independent of the two side of the shell of electric switchgear, can makes between the inwall of the outer wall of electric arc separation sleeve and shell and form the Ionization chamber that disappears that communicates with arc control device, thereby suppress the back commutation phenomenon of electric arc; Again, be formed with flange on the first buccal wall of electric arc separation sleeve and/or the outer lateral side of the second buccal wall, between flange and the first buccal wall and/or flange and the second buccal wall, form mounting groove, ferromagnetic parts and mounting groove are fixedly mounted on the electric arc separation sleeve by scarf, because being close to, ferromagnetic parts runs the arc road, therefore, can strengthen magnetic blow-out to electric arc by ferromagnetic parts, thereby further accelerate electric arc to the movement velocity of arc control device.
Description of drawings
Fig. 1 is one embodiment of the invention structure chart.
Fig. 2 be among Fig. 1 A-A ＇ to profile.
Fig. 3 is electric arc separation sleeve of the present invention and the schematic diagram that cooperates of arc control device, fixed contact, moving contact, upper run-on tab, lower run-on tab.
Fig. 4 is an embodiment perspective view of electric arc separation sleeve of the present invention.
Fig. 5 is the perspective view that electric arc separation sleeve of the present invention cooperates with lower run-on tab.
Fig. 6 is another embodiment of the present invention figure.
Fig. 7 is the schematic diagram that electric arc separation sleeve of the present invention matches with the magnetosheath that is shaped as U-shaped of ferromagnetic parts.
Among the figure: 1. shell, 11. second baffles, 12. second location convex surfaces, 13. first are located convex surfaces, 14. first baffle plates, 15. outlet terminals; 2. arc control device, 21. arc extinguishing grid pieces; 3. electric arc runway; 4. run-on tab on contact arc striking mechanism, 41. fixed contacts, 42. moving contacts, 43., 44. times run-on tabs, 45. fixed contacts, 46. moving contacts; 5. electric arc separation sleeve, 51. first buccal walls, 52. second buccal walls, 53. the 3rd buccal walls, 54. flange, 55. projections, 56. mounting grooves, 57. containing cavities, 58. curved ends; 6. ferromagnetic parts; 7. electric arc, 71. high temperature free gass; 9. Ionization chamber disappears.
Embodiment
For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but all be not restriction to the present invention program to the description of embodiment, any according to the present invention's design done only for pro forma but not substantial equivalent transformation all should be considered as technical scheme category of the present invention.
See also Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of electric switchgear with electric arc separation sleeve comprises: shell 1, be located at arc control device 2 that are made of a plurality of arc extinguishing grid pieces 21 stacked and that be separated from each other each other in the shell 1, be located at contact arc striking mechanism 4, operating mechanism, trip gear and electric arc separation sleeve 5 in the shell 1.Described contact arc striking mechanism 4 comprises fixed contact 45, moving contact 46, upper run-on tab 43 and lower run-on tab 44, described fixed contact 45 is fixed on the shell 1 of being made by insulating material, be provided with fixed contact 41 at fixed contact 45, described moving contact 46 is installed on the shell 1 rotationally, be provided with moving contact 42 at moving contact 46, moving contact 42 is corresponding with fixed contact 41, each contact is communicated with by the binding post that conductor is connected to switch, the disengaging movement of moving contact 42 can be handled by the mode of rocking handle or trip gear (said mechanism or device are known technology, are not illustrated in the drawings) by operating mechanism.Described trip gear can be selected electromagnetic tripping apparatus and thermal release device, and both all can cause the automatic separation of moving contact 42 when overload and/or short circuit.Described upper run-on tab 43 is corresponding with fixed contact 45, described lower run-on tab 44 is corresponding with moving contact 46, the end of one end of upper run-on tab 43 and the location guide of fixed contact 45 is fixed, the other end of upper run-on tab 43 extends to the top of arc control device 2, lower run-on tab 44 is fixed on the shell 1, be positioned at the below of moving contact 46, one end of lower run-on tab 44 is positioned at the extreme position that moving contact 46 is opened, and be electrically connected with the outlet terminal 15 of electric switchgear, the other end of lower run-on tab 44 extends to the bottom of arc control device 2, is formed with electric arc runway 3 between lower run-on tab 44 and upper run-on tab 43.Described electric arc separation sleeve 5 preferred insulating material such as POM, the PA etc. with aerogenesis effect of adopting process, this insulating material can absorb the energy of electric arc in the generation gas that is heated, the gas that insulating material produces can further improve the pressure of electric arc runway, accelerates the movement velocity of electric arc; And the gas that insulating material produces can change the composition of high-temperature vapour, further suppresses the generation of back commutation phenomenon.This electric arc separation sleeve 5 is by the first buccal wall 51, the second buccal wall 52 and the 3rd buccal wall 53 enclosures form, wherein: described the first buccal wall 51 is face-to-face setting each other with described the second buccal wall 52, and be formed with the containing cavity 57 that inserts for for described lower run-on tab 44 between the two, the upper opening place correspondence of described containing cavity 57 has described upper run-on tab 43, fixed contact 45 and moving contact 46, by upper run-on tab 43, fixed contact 45 and moving contact 46 cover the upper opening of containing cavity 57, the bottom of described containing cavity 57 is to there being lower run-on tab 44, it is the 3rd buccal wall 53 below lower run-on tab 44, by the 3rd buccal wall 53 the first buccal wall 51 and the second buccal wall 52 are connected as one, define the width of electric arc runway 3 by containing cavity 57, make it much smaller than the width of arc control device 2, thereby the gas pressure intensity that can increase between electric arc runway 3 and the arc control device 2 is poor.Simultaneously, because the installation of electric arc separation sleeve 5 is independent of the two side of the shell 1 of electric switchgear, therefore between the inwall of the outer wall of described electric arc separation sleeve 5 and shell 1, be formed with the Ionization chamber 9 that disappears that communicates for described arc control device 2.On the shell 1 of switching device and corresponding to the rearward end of arc control device 2, the first baffle plate 14(is installed as shown in Figure 2), prevent that the high temperature free gas from leaking to electric switchgear is outside, after electric arc 7 enters arc control device 2 by electric arc runway 3, the high-temperature metal steam that discharges increases the air pressure in the arc control device 2, the high-temperature metal steam is subject to stopping of the first baffle plate 14 and retroeflection, the gas pressure intensity of Ionization chamber 9 inside is lower owing to disappear, and high temperature free gas 71 is easy to enter this zone and is cooled in this zone and disappears free.
See also Fig. 1, Fig. 2 and Fig. 3, the present invention also has additional second baffle 11 on described shell 1, described second baffle 11 is positioned at a side of described electric arc separation sleeve 5 and corresponding to an end of containing cavity 57 side mouth, be used for this side mouth of shutoff, the opposite side of described electric arc separation sleeve 5 is positioned at described arc control device 2 sides and makes the other end of containing cavity 57 side mouth aim at described arc control device 2.
See also Fig. 1, Fig. 3 and Fig. 4, the first buccal wall 51, second buccal wall 52 of electric arc separation sleeve 5 of the present invention are formed with curved end 58 in the upper end of short transverse, correspondingly, have additional for the first location convex surface 13 that matches with curved end 58 at described shell 1, the first location convex surface 13 can carry out shutoff to the opening of the curved end 58 of electric arc separation sleeve 5, thereby further strengthen the pressure of electric arc runway 3, strengthen the air-blowing power that is subject in the arc motion process, accelerate electric arc to the movement velocity of arc control device.
See also Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the first buccal wall 51 of described electric arc separation sleeve 5 and the second buccal wall 52 are formed with the projection 55 that matches for described lower run-on tab 44 at the inner side surface that faces each other; Extend the second location convex surface 12 that matches with the 3rd buccal wall 53 on the described shell 1, thus electric arc separation sleeve 5 and shell 1 and lower run-on tab 44 are fixed, and make the other end of containing cavity 57 side mouth of electric arc separation sleeve 5 aim at described arc control device 2.In one embodiment of the invention, the first buccal wall 51 and second buccal wall 52 of described electric arc separation sleeve 5 are formed with respectively flange 54 on the outer lateral side that faces each other, being formed with respectively mounting groove 56 between described flange 54 and the first buccal wall 51 and between described flange 54 and the second buccal wall 52, be installed with ferromagnetic parts 6 in the described mounting groove 56.In another embodiment of the present invention, described the first buccal wall 51 or the second buccal wall 52 are formed with flange 54 in arbitrary side of the outer lateral side that faces each other, being formed with mounting groove 56 between described flange 54 and the first buccal wall 51 or between described flange 54 and the second buccal wall 52, be installed with ferromagnetic parts 6 in the described mounting groove 56.Described ferromagnetic parts 6 is ferromagnetic plate or permanent magnet plate.When electric switchgear was alternating-current switch, ferromagnetic parts 6 was selected ferromagnetic plate, such as Fig. 2, was installed in symmetrically in the mounting groove 56; When electric switchgear was dc switch, ferromagnetic parts 6 was selected the permanent magnet plate, such as Fig. 2, can be installed in symmetrically in the mounting groove 56, or, such as Fig. 6, can asymmetricly be installed in the mounting groove 56.The shape of described ferromagnetic parts 6 is unrestricted, can be magnetosheath of flat or U-shaped etc.Ferromagnetic parts 6 shown in Figure 2 is plate armature, there are two, be installed in symmetrically in the described mounting groove 56 and with flange 54 and be interference fit, thereby make two ferromagnetic parts 6 abut against the both sides of electric arc runway 3, can effectively increase the magnetic blow-out power that electric arc 7 is subject to, further accelerate the movement velocity of electric arc 7.Ferromagnetic parts 6 shown in Figure 6 also is plate armature, there are two, asymmetricly be installed in the described mounting groove 56, and the length of a top ferromagnetic parts 6 is less than the length of a following ferromagnetic parts 6, and a top ferromagnetic parts 6 is being installed away from the direction of arc control device 2.Adopt asymmetrical ferromagnetic parts 6 can reduce electric arc 7 and enter arc control device 2 rear ferromagnets to its reverse suction.Ferromagnetic parts 6 shown in Figure 7 adopts the magnetosheath structure of U-shaped, this magnetosheath comprises that two are affixed tactile sidewall and a diapire that is used for coating the 3rd buccal wall 53 that is connected with described sidewall with the first buccal wall 51 and the second buccal wall 52 respectively, make the following ferromagnetic material of also installing of described lower run-on tab 44, can reduce like this this regional magnetic resistance, further increase the magnetic blow-out power that electric arc 7 is subject to, accelerate electric arc 7 to the motion of arc control device 2.
When moving contact 42 separated with fixed contact 41, electric arc 7 was formed between the contact, was subject to the active force of magnetic blow-out and air-blowing, electric arc 7 in containing cavity 57 inside of electric arc separation sleeve 5 along electric arc runway 3 to arc control device 2 directions move.In arc control device 2, electric arc 7 is divided into many short arcs by grid sheet 21, and the stack of electrode drop is risen rapidly arc voltage, and after arc voltage was greater than supply voltage, short circuit current began decay, until extinguish.
The present invention only need to set up an electric arc separation sleeve 5 in shell 1, space that just can limit switch device electric arc runway district increases the gas pressure intensity in electric arc runway district; Simultaneously, this electric arc separation sleeve 5 can also and the shell 1 of switching device between form the high temperature free gas 71 free Ionization chamber 9 that disappears that disappears; In addition, ferromagnetic parts 6 can be installed easily on electric arc separation sleeve 5, can strengthen magnetic blow-out to electric arc 7 by ferromagnetic parts 6.Therefore can solve simultaneously well air-blowing, magnetic blow-out and disappear free three problems.
In sum, technical scheme provided by the invention has overcome the shortcoming in the prior art, reached the purpose of invention and demonstrated fully the applicant at the technique effect described in the technique effect hurdle, thereby to can yet be regarded as is a ultimate attainment intention
Claims (10)
1.
A kind of electric switchgear with electric arc separation sleeve comprises: shell (1); Be located at the arc control device (2) that consisted of by a plurality of arc extinguishing grid pieces stacked and that be separated from each other each other (21) in the shell (1); Be located at the contact arc striking mechanism (4) in the shell (1), described contact arc striking mechanism (4) comprises fixed contact (45), moving contact (46), upper run-on tab (43) and lower run-on tab (44), described fixed contact (45) is fixed on the shell (1), be provided with fixed contact (41) at fixed contact (45), described moving contact (46) is installed on the shell (1) rotationally, be provided with moving contact (42) at moving contact (46), moving contact (42) is corresponding with fixed contact (41), one end of described upper run-on tab (43) is connected with fixed contact (45), the other end of upper run-on tab (43) extends to the top of arc control device (2), described lower run-on tab (44) is fixed on the shell (1), be positioned at the below of moving contact (46), and extend to the bottom of arc control device (2), between lower run-on tab (44) and upper run-on tab (43), be formed with electric arc runway (3), it is characterized in that: in described shell (1), also be provided with an electric arc separation sleeve (5), this electric arc separation sleeve (5) is by the first buccal wall (51), the second buccal wall (52) and the 3rd buccal wall (53) enclosure form, wherein: described the first buccal wall (51) is face-to-face setting each other with described the second buccal wall (52), and be formed with the containing cavity (57) that inserts for for described lower run-on tab (44) between the two, the corresponding described upper run-on tab (43) in the upper opening place of described containing cavity (57), fixed contact (45) and moving contact (46), the corresponding lower run-on tab (44) in the place, bottom of described containing cavity (57), be the 3rd buccal wall (53) in the below of lower run-on tab (44), by the 3rd buccal wall (53) the first buccal wall (51) and the second buccal wall (52) connected as one; Between the inwall of the outer wall of described electric arc separation sleeve (5) and described shell (1), be formed with the Ionization chamber that disappears (9) that communicates for described arc control device (2).
2.
Electric switchgear with electric arc separation sleeve according to claim 1 is characterized in that also having additional the first baffle plate (14) on the described shell (1), and described the first baffle plate (14) is positioned at the end, rear end of arc control device (2).
3.
Electric switchgear with electric arc separation sleeve according to claim 1, it is characterized in that also having additional on the described shell (1) second baffle (11), described second baffle (11) is positioned at a side of described electric arc separation sleeve (5) and corresponding to an end of containing cavity (57) side mouth, and it is other and make the other end of containing cavity (57) side mouth aim at described arc control device (2) that the opposite side of described electric arc separation sleeve (5) is positioned at described arc control device (2).
4.
Electric switchgear with electric arc separation sleeve according to claim 1, the first buccal wall (51), the second buccal wall (52) that it is characterized in that described electric arc separation sleeve (5) are formed with curved end (58) in the upper end of short transverse, correspondingly, have additional for the first location convex surface (13) that matches with curved end (58) at described shell (1).
5.
Electric switchgear with electric arc separation sleeve according to claim 1 is characterized in that also having additional on the described shell (1) second a location convex surface (12) that is used for matching with described the 3rd buccal wall (53).
6.
Electric switchgear with electric arc separation sleeve according to claim 1 is characterized in that described the first buccal wall (51) and the second buccal wall (52) are formed with the projection (55) that matches for described lower run-on tab (44) at the inner side surface that faces each other.
7.
Electric switchgear with electric arc separation sleeve according to claim 1, it is characterized in that described the first buccal wall (51) and the second buccal wall (52) are formed with respectively flange (54) on the outer lateral side that faces each other, being formed with respectively mounting groove (56) between described flange (54) and the first buccal wall (51) and between described flange (54) and the second buccal wall (52), be installed with ferromagnetic parts (6) in the described mounting groove (56).
8.
Electric switchgear with electric arc separation sleeve according to claim 1, it is characterized in that described the first buccal wall (51) or the second buccal wall (52) are formed with flange (54) in arbitrary side of the outer lateral side that faces each other, being formed with mounting groove (56) between described flange (54) and the first buccal wall (51) or between described flange (54) and the second buccal wall (52), be installed with ferromagnetic parts (6) in the described mounting groove (56).
9.
According to claim 7 or 8 described electric switchgears with electric arc separation sleeve, it is characterized in that described ferromagnetic parts (6) is permanent magnet plate or ferromagnetic plate.
10.
According to claim 7 or 8 described electric switchgears with electric arc separation sleeve, the magnetosheath that is shaped as flat or U-shaped that it is characterized in that described ferromagnetic parts (6)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210581353.6A CN103021706B (en) | 2012-12-28 | 2012-12-28 | Electric switch device with electric arc isolating sleeve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210581353.6A CN103021706B (en) | 2012-12-28 | 2012-12-28 | Electric switch device with electric arc isolating sleeve |
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| CN103021706A true CN103021706A (en) | 2013-04-03 |
| CN103021706B CN103021706B (en) | 2015-06-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198984A (en) * | 2013-04-10 | 2013-07-10 | 四川中光防雷科技股份有限公司 | High-security surge protection device |
| CN105097333A (en) * | 2014-04-21 | 2015-11-25 | 西门子公司 | Switching device and arc extinguishing assembly thereof |
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| GB1008725A (en) * | 1961-08-21 | 1965-11-03 | Licentia Gmbh | An electric circuit breaker with single or double interruption |
| US4585912A (en) * | 1983-03-25 | 1986-04-29 | Siemens Aktiengesellschaft | Circuit breaker, particularly line-protective circuit breaker |
| EP0138174A2 (en) * | 1983-10-15 | 1985-04-24 | Licentia Patent-Verwaltungs-GmbH | Quenching device for an automatic circuit breaker |
| CN1174391A (en) * | 1996-07-05 | 1998-02-25 | 施耐德电器公司 | Breaking device for high rating electrical circuit breaker |
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| CN1835151A (en) * | 2005-02-17 | 2006-09-20 | Abb专利有限公司 | Electrical installation device with pre-arc chamber, pre-arc chamber plates and current limiting arc extinguishing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198984A (en) * | 2013-04-10 | 2013-07-10 | 四川中光防雷科技股份有限公司 | High-security surge protection device |
| CN103198984B (en) * | 2013-04-10 | 2015-05-27 | 四川中光防雷科技股份有限公司 | High-security surge protection device |
| CN105097333A (en) * | 2014-04-21 | 2015-11-25 | 西门子公司 | Switching device and arc extinguishing assembly thereof |
| CN105097333B (en) * | 2014-04-21 | 2018-01-16 | 西门子公司 | The arc extinguishing component and its switching device of switching device |
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| Publication number | Publication date |
|---|---|
| CN103021706B (en) | 2015-06-17 |
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