CN105261502A - DC circuit breaker arc extinguishing chamber - Google Patents
DC circuit breaker arc extinguishing chamber Download PDFInfo
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- CN105261502A CN105261502A CN201510711621.5A CN201510711621A CN105261502A CN 105261502 A CN105261502 A CN 105261502A CN 201510711621 A CN201510711621 A CN 201510711621A CN 105261502 A CN105261502 A CN 105261502A
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- Prior art keywords
- housing
- circuit breaker
- arc
- inner chamber
- control device
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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
- H01H9/36—Metal parts
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention provides a DC circuit breaker arc extinguishing chamber which comprises a shell with a mounting inner cavity and a plurality of metal gates which are installed in the mounting inner cavity side by side. An arc extinguishing space with two through ends is formed between any two adjacent metal gates. The shell also comprises a containing inner cavity for containing DC circuit breaker moving and static contacts, and the containing inner cavity communicates with one end of the arc extinguishing space. The shell side wall which forms the containing inner cavity is also provided with a first magnetic shield plate for shielding a magnetic field. When the moving and static contacts of the DC circuit breaker are disconnected to generate an electric arc, the first magnetic shield plate can protect the electric arc from being interrupted by an external magnetic field, the magnetic field generated at moving and static contact positions is gathered in the containing inner cavity such that the electric arc is rapidly and stably driven to the metal gates to extinguish the arc under the effect of the magnetic field generated at moving and static contact positions, and thus the stability of arc extinguishment is improved.
Description
Technical field
The present invention relates to Arc Distinguishing Device for Circuit Breakers technical field, be specifically related to a kind of DC circuit breaker arc control device.
Background technology
Along with the development of national economy; direct current transmission and distribution system in electric power system is also developed rapidly; as the fields such as urban track traffic, solar energy, high ferro all have employed DC power-supply system; for for the protection of with the security performance of DC circuit breaker and the functional reliability that control DC power-supply system, have higher requirement especially.
As everyone knows, the dynamic/static contact of DC circuit breaker all produces electric arc when disjunction fault current, running current and critical current, particularly when the short circuit current that disjunction is large, if can not reliable extinguish arcs, circuit breaker itself not only can be caused to damage, also can cause the damage of large-area power supply unit due to large electric power and heat energy.Therefore how to improve the arc extinguishing ability of DC circuit breaker, accelerate arc extinguishing speed, just becoming those skilled in the art's problem demanding prompt solution.
Chinese patent literature CN102592909A discloses a kind of DC circuit breaker magnetic-quenching arc-extinguishing device, as shown in Figure 1, comprise fixed contact 01, moving contact 02, quiet striking road 03, dynamic striking road 04, arc control device 07, quiet leading-out terminal 08 and dynamic leading-out terminal 09, wherein, be respectively equipped with quiet striking circle 05 for strengthening local magnetic field strength and dynamic striking circle 06 at the bending part of close arc control device 07 entrance in quiet striking road 03 and dynamic striking road 04.When fixed contact 01 and moving contact 02 disjunction produce electric arc, electric arc is not only subject to the magnetic blow-out power from dynamic/static contact 01,02 magnetic field, position, also can be subject to the magnetic blow-out power from quiet striking circle 05 and magnetic field, dynamic striking circle 06 position, thus electric arc can be moved to arc control device 07 at faster speed, accelerate arc extinguishing speed.
Magnetic-quenching arc-extinguishing device disclosed in above-mentioned patent documentation, although electric arc can be made to accelerate arc extinguishing to arc control device motion at faster speed, but in quiet striking road 03, dynamic striking road 04 being set up quiet striking circle 05 and dynamic striking circle 06 but causes arc quenching chamber structure complicated, to make troubles and cost is higher to manufacturing; In addition; inventor finds; in the occasion of some electric connecting relation complexity; often there will be the series connection of multiple DC circuit breaker and situation about being arranged side by side; the magnetic field intensity of the another one DC circuit breaker arc control device inside that the magnetic field that the sound striking coil arranged a DC circuit breaker arc control device porch produces easily disturbs to be adjacent; cause the magnetic field intensity of another one DC circuit breaker arc control device inside to reduce, and then cause that arc extinguishing speed is slow, weak effect.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome DC circuit breaker magnetic-quenching arc-extinguishing device complex structure of the prior art, and external magnetic field easily causes interference to arc control device, cause field weakening, and then make arc extinguishing unstable, the technological deficiency that arc extinguishing slows, thus provide a kind of structure simple and external magnetic field interference can not be subject to, the thus stable DC circuit breaker arc control device rapidly of arc extinguishing.
For this reason, the invention provides a kind of DC circuit breaker arc control device, comprising:
Housing, has the installation inner chamber for installing metal grid;
Metal grid, has several, is arranged on described installation inner cavity side by side, and forms penetrating arc extinguishing space, two ends between the described metal grid of arbitrary neighborhood two;
Described housing also has the accommodating inner chamber being suitable for accommodating DC circuit breaker dynamic/static contact, and described accommodating inner chamber is communicated with the one end in described arc extinguishing space; Further, in the described housing sidewall forming described accommodating inner chamber, the first magnetic shield panel for armoured magnetic field is also provided with.
As a kind of preferred version, described housing has the first housing and the second housing that are oppositely arranged, described first housing has Part I, described second housing has relative to described Part I the Part II forming described accommodating inner chamber, and described first magnetic shield panel is arranged on described Part I and described Part II.
As a kind of preferred version, on the outer wall that described first magnetic shield panel is arranged on described Part I or centre position, on the outer wall that described first magnetic shield panel is arranged on described Part II or centre position.
As a kind of preferred version, in the described housing sidewall forming described installation inner chamber, be also provided with the second magnetic shield panel for armoured magnetic field.
As a kind of preferred version, described first housing has the Part III be connected with described Part I, and described second housing has the Part IV be connected with described Part II, and described Part III and described Part IV fasten and form described installation inner chamber; Described second magnetic shield panel is arranged on described Part III and described Part IV.
As a kind of preferred version, on the outer wall that described second magnetic shield panel is arranged on described Part III or centre position, on the outer wall that described second magnetic shield panel is arranged on described Part IV or centre position.
As a kind of preferred version, the material of described housing is the isolation material that can produce gas after being heated.
As a kind of preferred version, also comprise the some insulation be arranged on described case inside wall protruding, protruding the coming close to or in contact with the described metal grid one end away from described accommodating inner chamber of described insulation is connected, and forms the connected space be communicated with the other end in described arc extinguishing space between adjacent two described insulation projections.
As a kind of preferred version, described housing is also provided with the arc extinguishing inner chamber with front and back opening, one sidewall of described arc extinguishing inner chamber offers multiple first connected entrances be communicated with described connected space by connection space, opposite side offers multiple second connected entrances relative respectively with multiple described first connected entrance.
As a kind of preferred version, described Part III and/or described Part IV are also provided with the exhaust outlet being communicated with described connection space to be outwards vented.
DC circuit breaker arc control device provided by the invention, have the following advantages:
1. DC circuit breaker arc control device of the present invention, housing is provided with the accommodating inner chamber for accommodating DC circuit breaker dynamic/static contact, and the first magnetic shield panel be provided with in the housing sidewall forming accommodating inner chamber for armoured magnetic field, when the dynamic/static contact disjunction of DC circuit breaker produces electric arc, first magnetic shield panel can protect electric arc not by the interference from external magnetic field, and generation is assembled at accommodating inner cavity in the magnetic field of dynamic/static contact position, make electric arc under the magnetic fields produced by dynamic/static contact position, stablized, drive rapidly and shift to metal grid arc extinguishing, thus improve the stability of arc extinguishing.
2. DC circuit breaker arc control device of the present invention, accommodating inner chamber, between the Part I and the Part II of the second housing of the first housing, all leaves the opening with accommodating inner space in the longitudinal direction, is convenient to being fit into of the dynamic/static contact of DC circuit breaker.
3. DC circuit breaker arc control device of the present invention, on the outer wall that first magnetic shield panel is arranged on Part I or centre position, on the outer wall that first magnetic shield panel is arranged on Part II or centre position, because the magnetic shield panel with armoured magnetic field effect is generally magnetic conductive material, on the outer wall that first magnetic shield panel is arranged on Part I and Part II or centre position, the first magnetic shield panel can be avoided the attraction of electric arc, and boost in arc extinguishing space electric arc being entered rapidly under the sucking action of magnetic blow-out power and metal grid formed by metal grid arc extinguishing.
4. DC circuit breaker arc control device of the present invention, formed in the housing sidewall of installing inner chamber, also be provided with the second magnetic shield panel for armoured magnetic field, when electric arc enters into installation inner chamber under the effect of magnetic blow-out power, second magnetic shield panel can shield external magnetic field, make to be positioned at inner cavity is installed electric arc from the blowback effect of external magnetic field, and then make electric arc in the arc extinguishing space formed by metal grid gradually away from dynamic/static contact, thus further elongating arc, make electric arc accelerate to extinguish.
5. DC circuit breaker arc control device of the present invention, install inner chamber and are formed by Part III and Part IV fastening, are convenient to, installing the structure of inner cavity setting for installing metal grid, be convenient to manufacture.
6. DC circuit breaker arc control device of the present invention, on the outer wall that second magnetic shield panel is arranged on Part III or centre position, on the outer wall that second magnetic shield panel is arranged on Part IV or centre position, make the second magnetic shield panel when providing magnetic screening action, directly do not contact with electric arc, electric arc mobile elongation rapidly in arc extinguishing space can also be enable, extinguish fast.
7. DC circuit breaker arc control device of the present invention, the material of housing is the isolation material that can produce gas after being heated, because the temperature of electric arc is very high, a large amount of gases produced after shell material is heated, can not only drive electric arc to be rapidly to metal grid and move, accelerate electric arc and elongate speed, electric arc is boosted rapidly, can also lower the temperature for electric arc, arc resistance is increased, electric current reduces, thus is conducive to accelerating arc extinction.
8. DC circuit breaker arc control device of the present invention, some insulation are also provided with protruding in enclosure interior, itself and housing are same material, protruding the coming close to or in contact with one end of metal grid of insulation is connected, and form the connected space be communicated with the other end in arc extinguishing space between adjacent two insulation projections, electric arc is divided into sectional little electric arc after entering the arc extinguishing space formed by metal grid, if a part of little electric arc does not extinguish in arc extinguishing space, then can enter into the connected space convexed to form by insulating inner, owing to insulating, projection belongs to same material with housing, after little electric arc enters into connected space, insulation projection is heated generation gas, it is outwards mobile that these gases not only drive little electric arc to continue, elongating arc, can also lower the temperature for electric arc, improve arc resistance, reduce arc current, electric arc is impelled to extinguish as early as possible.
9. DC circuit breaker arc control device of the present invention, housing is also provided with the arc extinguishing inner chamber with front and back opening, enter into after arc extinguishing inner cavity by the part electric arc extinguished not yet after arc extinguishing space and connected space through the first connected entrance, because arc extinguishing inner chamber is in communication with the outside by front and back opening, electric arc enters into herein and just can finally extinguish, multiple second connected entrances relative with multiple first connected entrance, for being the cooling of arc extinguishing inner chamber Quick air-discharge.
10. DC circuit breaker arc control device of the present invention, Part III and/or Part IV are also provided with the exhaust outlet be communicated with connection space, a large amount of gases that housing can produce because being heated by exhaust outlet are discharged rapidly, for housing step-down prevents from rising brokenly, and the temperature that can be conducive to housing reduces fast.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in prior art or the specific embodiment of the invention, the accompanying drawing used in describing prior art or embodiment is below briefly described, apparently, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of DC circuit breaker magnetic-quenching arc-extinguishing device in prior art.
Fig. 2 is the stereogram of DC circuit breaker arc control device in the embodiment of the present invention.
Fig. 3 is the structural blast figure of the first magnetic shield panel and the second magnetic shield panel part in Fig. 2.
Fig. 4 is the structure chart after Fig. 2 removes the second housing and arranges superincumbent magnetic shield panel.
Fig. 5 is the structural blast figure of Fig. 2.
Fig. 6 is another view of Fig. 5.
Fig. 7 is the part-structure explosive view of metal grid in Fig. 6.
Reference numeral: 01-fixed contact, 02-moving contact, 03-Jing Yinhudao, 04-move striking road, and 05-Jing Yinhuquan, 06-move striking circle, 07-arc control device, the quiet leading-out terminal of 08-, and 09-moves leading-out terminal;
1-housing, 101-installs inner chamber, the accommodating inner chamber of 102-, 11-first housing, 111-Part I, 112-Part III, 12-second housing, 121-Part II, 122-Part IV, 2-metal grid, 21-arc extinguishing space, 31-first magnetic shield panel, 32-second magnetic shield panel, 4-insulate projection, 5-arc extinguishing inner chamber, 51-first connected entrance, 52-second connected entrance, 6-connection space, 61-exhaust outlet.
Embodiment
Be described technical scheme of the present invention below in conjunction with Figure of description, obviously, following embodiment is not the whole embodiment of the present invention.Based on embodiment described in the invention, those of ordinary skill in the art, not making the every other embodiment obtained under other creative work prerequisites, belong to protection scope of the present invention.
It should be noted that, in describing the invention, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.In addition, if below in the described different execution mode of the present invention involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment
The present embodiment provides a kind of DC circuit breaker arc control device, as shown in figs. 1-7, comprise the housing 1 having and install inner chamber 101, several metal grid 2 are staggered installation of at described installation inner chamber 101 inner side by side, and form penetrating arc extinguishing space 21, two ends between the described metal grid 2 of arbitrary neighborhood two; Housing 1 also has the accommodating inner chamber 102 being suitable for accommodating DC circuit breaker dynamic/static contact, and accommodating inner chamber 102 is communicated with the one end in arc extinguishing space 21; Further, on described housing 1 sidewall forming described accommodating inner chamber 102, the first magnetic shield panel 31 for armoured magnetic field is also provided with.
When the dynamic/static contact disjunction of the DC circuit breaker being positioned at accommodating inner chamber 102 inside produces electric arc; first magnetic shield panel 31 can protect electric arc not by the interference from external magnetic field; and generation is assembled in accommodating inner chamber 102 inside in the magnetic field of dynamic/static contact position; make electric arc under the magnetic fields produced by dynamic/static contact position; stablized, drive rapidly and shift to metal grid arc extinguishing, thus improve the stability of arc extinguishing.
As shown in Fig. 5-Fig. 6, housing 1 has the first housing 11 and the second housing 12 be oppositely arranged, first housing 11 has Part I 111, second housing 12 has and relatively with Part I 111 to be arranged on described Part I 111 and described Part II 121 with Part II 121, first magnetic shield panel 31 forming described accommodating inner chamber 102.
Specifically in this enforcement, as shown in Fig. 2-4 and Fig. 5-6, the outer wall of Part I 111 is provided with installation groove, and the outer wall of Part II 121 is also provided with installation groove, and the first magnetic shield panel 31 is installed on installation inside grooves, and fixed form is bonding.As distortion, the first magnetic shield panel 31 also can be arranged on the centre position of Part I 111, and/or is arranged on the centre position of Part II 121, and concrete fixed form can be that conventional bolt connects, squeeze flow etc.
The first magnetic shield panel 31 in the present embodiment is iron plate, on the outer wall that first magnetic shield panel 31 is arranged on Part I 111 and Part II 121 or centre position, the direct contact of the first magnetic shield panel 31 pairs of electric arcs can be avoided, boosting arc extinguishing in the arc extinguishing space 21 electric arc being entered rapidly under the sucking action of magnetic blow-out power and metal grid 2 formed by metal grid 2.
In this enforcement, accommodating inner chamber 102, between the Part I 111 and the Part II 121 of the second housing 12 of the first housing 11, all leaves the opening be communicated with accommodating inner chamber 102 in the longitudinal direction, is convenient to being fit into of the dynamic/static contact of DC circuit breaker.
Being formed on housing 1 sidewall installing inner chamber 101, be also provided with the second magnetic shield panel 32 for armoured magnetic field.As shown in Fig. 2, Fig. 3 and Fig. 5-Fig. 6, first housing 11 has the Part III 112 be connected with Part I 111, second housing 12 has the Part IV 122 be connected with Part II 121, and described Part III 112 fastens to be formed with described Part IV 122 installs inner chamber 101; Second magnetic shield panel 32 is arranged on Part III 112 and Part IV 122.
Specifically in the present embodiment, the outer wall of Part III 112 is provided with installation groove, and the outer wall of Part IV 122 is also provided with installation groove, and the second magnetic shield panel 32 is installed on installation inside grooves, and fixed form is bonding.As distortion, the second magnetic shield panel 32 also can be arranged on the centre position of Part III 112, and/or is arranged on the centre position of Part IV 122, and concrete fixed form can be that conventional bolt connects, squeeze flow etc.
When electric arc enters into installation inner chamber 101 under the effect of magnetic blow-out power, second magnetic shield panel 32 can shield external magnetic field, make to be positioned at inner chamber 101 inside is installed electric arc from the blowback effect of external magnetic field, and then make electric arc in the arc extinguishing space 21 formed by metal grid 2 gradually away from dynamic/static contact, thus further elongating arc, make electric arc accelerate to extinguish.
The second magnetic shield panel 32 in the present embodiment is similarly iron plate, on the outer wall that second magnetic shield panel 32 is arranged on Part III 112 and Part IV 122 or centre position, the direct contact of the second magnetic shield panel 32 pairs of electric arcs can be avoided, electric arc is elongated rapidly under the effect of magnetic blow-out power in arc extinguishing space 21, boost arc extinguishing.
Housing 1 in this enforcement is suppressed by the insulating material of the melamine of band glass fibre and is formed, it can produce gas after being heated, these gases can not only drive electric arc to be rapidly to metal grid 2 and move, enter into arc extinguishing space 21 fast inner, accelerate electric arc and elongate speed, electric arc is boosted rapidly, can also lower the temperature for electric arc, arc resistance is increased, and electric current reduces, thus is conducive to accelerating arc extinction.
In fact, as long as the material of housing 1 all can use for the isolation material that can produce gas after being heated.
As Figure 4-Figure 6, form the slot installed and the first housing 11 of inner chamber 101 and the second housing 12 madial wall be equipped with for installing metal grid 2, metal grid 2 is inner and be arranged on that to install inner chamber 101 inner by the partial sidewall of its both sides being inserted slot.As shown in Figure 7, metal grid 2 has some, one that is arranged in two metal grid 2 at two ends has the arc ignition portion extended towards accommodating inner chamber 102, the bottom surface towards accommodating inner chamber 102 being positioned at the metal grating 2 of mid portion is skewback, and the incline direction of the skewback of adjacent two metal gratings 2 contrary (i.e. interlaced closed assembly), electric arc can be introduced the rapid arc extinguishing in arc extinguishing space by arc ignition portion, and the setting of skewback is beneficial to and reduces the resistance that electric arc enters arc extinguishing space.
As shown in Figure 4, the first housing 11 and the second housing 12 inside are also provided with some insulation protruding 4, and the insulation projection 4 in these two housings is interlaced to be equidistantly stacked.The bearing of trend of insulation protruding 4 is identical with the distribution arrangement of the second housing 12 with the first housing 11, its material is identical with the material of housing 1, insulation protruding 4 and metal grid 2 one end away from accommodating inner chamber 102 near connecting (contact to connect and be also fine), and form the connected space be communicated with the other end in arc extinguishing space 21 between adjacent two insulation protruding 4.
Producing electric arc between dynamic/static contact is subject to after magnetic blow-out power and gas blows the driving of power, enter in the arc extinguishing space 21 that formed by metal grid 2 and be divided into sectional little electric arc, if a part of little electric arc does not extinguish in arc extinguishing space 21, then can enter into the connected space formed by insulation protruding 4 inner, owing to insulating, projection 4 belongs to same material with housing 1, after little electric arc enters into connected space, insulation protruding 4 is heated generation gas, it is outwards mobile that these gases not only drive little electric arc to continue, elongating arc, can also lower the temperature for electric arc, improve arc resistance, reduce arc current, electric arc is impelled to extinguish as early as possible.
As Figure 4-Figure 6, insulation protruding 4 is separately positioned on the inner side of the first housing 11 and the second housing 12, when the first housing 11 and the second housing 12 fasten formation housing 1, point to be located at insulation inside the first housing 11 and the second housing 12 protruding 4 to be interlacedly stacked, and to form the connected spaces be communicated with the other end in arc extinguishing space 21 between adjacent two insulation protruding 4.
As distortion, insulation protruding 4 can be all be arranged on the madial wall of the first housing 11, can be all be arranged on the madial wall of the second housing 12, also can be that a part is arranged on the madial wall of the first housing 11, another part is arranged on the madial wall of the second housing 12, can also be that the part arranging an insulation protruding 4 is positioned on the madial wall of the first housing 11, another part is positioned on the madial wall of the second housing 12, when the first housing 11 and the second housing 12 fasten, the protruding docking of two parts insulation becomes an insulation protruding 4.
As shown in Figure 2 and Figure 4, housing 1 is also provided with the arc extinguishing inner chamber 5 with front and back opening, one sidewall of arc extinguishing inner chamber 5 offers multiple first connected entrances 51 be communicated with connected space by connection space 6, opposite side offers multiple second connected entrances 52 relative respectively with multiple first connected entrance 51.
The part electric arc extinguished not yet after by arc extinguishing space 21 and connected space enters into behind arc extinguishing inner chamber 5 inside through the first connected entrance 51, because arc extinguishing inner chamber 5 is in communication with the outside by front and back opening, electric arc enters into herein and just can finally extinguish, multiple second connected entrances 52 relative with multiple first connected entrance 51, for being the cooling of arc extinguishing inner chamber 5 Quick air-discharge.
As Figure 4-Figure 6, Part III 112 with Part IV 122 is also provided with the exhaust outlet 61 being communicated with connection space 6 to be outwards vented.A large amount of gases that housing 1 produces because being heated can be discharged rapidly by exhaust outlet 61, and for housing 1 step-down prevents from rising brokenly, and the temperature that can be conducive to housing 1 reduces fast.
In the present embodiment, the arc extinguishing process of DC circuit breaker arc control device is as follows:
When the dynamic/static contact disjunction being positioned at accommodating inner chamber 102 inside produces electric arc, housing 1 is heated generation gas, the magnetic field that dynamic/static contact position produces, gas drives electric arc to move to metal grid 2 together with magnetic field, the electric arc that now the first magnetic shield panel 31 protection is positioned at accommodating inner chamber 102 position does not disturb by external magnetic field, and arc stability is promptly moved to metal grid 2;
After electric arc arrives metal grid 2, enter the arc extinguishing space 21 formed by metal grid 2, electric arc is divided into the little electric arc of multistage by metal grid 2, the arc voltage of each section little electric arc is raised rapidly, and metal grid 2 can be lowered the temperature for electric arc, arc resistance is increased, and then arc current is reduced, impel each section little electric arc to extinguish as early as possible; Now the second magnetic shield panel 32 protection is positioned at the electric arc of inside, arc extinguishing space 21 not by external interference, and can move towards the direction away from accommodating inner chamber 102 rapidly, elongating arc, makes arc voltage raise;
If have the little electric arc of part by extinguishing not yet behind arc extinguishing space 21, it can enter into by insulating in protruding 4 connected spaces formed, be heated after insulation protruding 4 and arc contacts generation gas, electric arc is driven further to connection space 6, electric arc is elongated further, and arc temperature is reduced further, arc voltage is raised further, impels electric arc extinguish fast; In connected space 6 position, a large amount of gases gathered are discharged from position, gas outlet 61, are housing 1 step-down cooling;
If still have sub-fraction electric arc not yet to extinguish, it is under the driving effect of gas, can enter in arc extinguishing inner chamber 5 by the first connected entrance 51, arc extinguishing inner chamber 5 is in communication with the outside by front and back opening, electric arc can be made thoroughly to extinguish, second connected entrance 52 can be arc extinguishing inner chamber 5 exhaust cooling, and it is excessively remote to prevent electric arc from spraying arc extinguishing inner chamber 5, avoids occurring surprisingly.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (10)
1. DC circuit breaker arc control device, comprising:
Housing (1), has the installation inner chamber (101) for installing metal grid (2);
Metal grid (2), has several, is arranged on described installation inner chamber (101) side by side inner, and forms penetrating arc extinguishing space (21), two ends between the described metal grid of arbitrary neighborhood two (2);
It is characterized in that:
Described housing (1) also has the accommodating inner chamber (102) being suitable for accommodating DC circuit breaker dynamic/static contact, and described accommodating inner chamber (102) is communicated with one end of described arc extinguishing space (21); Further, on described housing (1) sidewall forming described accommodating inner chamber (102), the first magnetic shield panel (31) for armoured magnetic field is also provided with.
2. DC circuit breaker arc control device according to claim 1, it is characterized in that: described housing (1) has the first housing (11) and the second housing (12) that are oppositely arranged, described first housing (11) has Part I (111), described second housing (12) has relative to described Part I (111) the Part II (121) forming described accommodating inner chamber (102), and described first magnetic shield panel (31) is arranged on described Part I (111) and described Part II (121).
3. DC circuit breaker arc control device according to claim 2, it is characterized in that: on the outer wall that described first magnetic shield panel (31) is arranged on described Part I (111) or centre position, on the outer wall that described first magnetic shield panel (31) is arranged on described Part II (121) or centre position.
4. DC circuit breaker arc control device according to claim 2, it is characterized in that: on described housing (1) sidewall forming described installation inner chamber (101), be also provided with the second magnetic shield panel (32) for armoured magnetic field.
5. DC circuit breaker arc control device according to claim 4, it is characterized in that: described first housing (11) has the Part III (112) be connected with described Part I (111), described second housing (12) has the Part IV (122) be connected with described Part II (121), and described Part III (112) and described Part IV (122) fasten and form described installation inner chamber (101); Described second magnetic shield panel (32) is arranged on described Part III (112) and described Part IV (122).
6. DC circuit breaker arc control device according to claim 5, it is characterized in that: on the outer wall that described second magnetic shield panel (32) is arranged on described Part III (112) or centre position, on the outer wall that described second magnetic shield panel (32) is arranged on described Part IV (122) or centre position.
7. the DC circuit breaker arc control device according to any one of claim 1-6, is characterized in that: the material of described housing (1) is the isolation material that can produce gas after being heated.
8. DC circuit breaker arc control device according to claim 7, it is characterized in that: also comprise the some insulation protruding (4) be arranged on described housing (1) madial wall, described insulation protruding (4) comes close to or in contact with described metal grid (2) one end away from described accommodating inner chamber (102) and is connected, and forms the connected space be communicated with the other end of described arc extinguishing space (21) between adjacent two described insulation protruding (4).
9. DC circuit breaker arc control device according to claim 8, it is characterized in that: described housing (1) is also provided with the arc extinguishing inner chamber (5) with front and back opening, one sidewall of described arc extinguishing inner chamber (5) offers multiple first connected entrances (51) be communicated with described connected space by connection space (6), opposite side offers multiple second connected entrances (52) relative respectively with multiple described first connected entrance (51).
10. DC circuit breaker arc control device according to claim 9, is characterized in that: described Part III (112) and/or described Part IV (122) are also provided with the exhaust outlet (61) being communicated with described connection space (6) to be outwards vented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510711621.5A CN105261502B (en) | 2015-10-28 | 2015-10-28 | A kind of dc circuit breaker arc-chutes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510711621.5A CN105261502B (en) | 2015-10-28 | 2015-10-28 | A kind of dc circuit breaker arc-chutes |
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| Publication Number | Publication Date |
|---|---|
| CN105261502A true CN105261502A (en) | 2016-01-20 |
| CN105261502B CN105261502B (en) | 2017-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510711621.5A Active CN105261502B (en) | 2015-10-28 | 2015-10-28 | A kind of dc circuit breaker arc-chutes |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749361A (en) * | 2017-11-15 | 2018-03-02 | 常熟开关制造有限公司(原常熟开关厂） | Arc extinguishing grid pieces, arc-chutes and breaker |
| CN109256291A (en) * | 2017-07-13 | 2019-01-22 | 西门子股份公司 | Direct current arc-control device and electric motor type direct current electric switching system |
| CN111527576A (en) * | 2017-12-27 | 2020-08-11 | Ls电气株式会社 | Direct current breaker |
| CN112786324A (en) * | 2021-01-29 | 2021-05-11 | 北京双杰电气股份有限公司 | Low-voltage direct-current circuit breaker arc extinguish chamber and circuit breaker |
| CN112908787A (en) * | 2021-01-29 | 2021-06-04 | 北京双杰电气股份有限公司 | Magnetic shield and low-voltage direct-current circuit breaker using same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256291A (en) * | 2017-07-13 | 2019-01-22 | 西门子股份公司 | Direct current arc-control device and electric motor type direct current electric switching system |
| CN107749361A (en) * | 2017-11-15 | 2018-03-02 | 常熟开关制造有限公司(原常熟开关厂） | Arc extinguishing grid pieces, arc-chutes and breaker |
| CN111527576A (en) * | 2017-12-27 | 2020-08-11 | Ls电气株式会社 | Direct current breaker |
| US11430621B2 (en) | 2017-12-27 | 2022-08-30 | Ls Electric Co., Ltd. | DC circuit breaker |
| CN111527576B (en) * | 2017-12-27 | 2022-10-04 | Ls电气株式会社 | Direct current breaker |
| CN112786324A (en) * | 2021-01-29 | 2021-05-11 | 北京双杰电气股份有限公司 | Low-voltage direct-current circuit breaker arc extinguish chamber and circuit breaker |
| CN112908787A (en) * | 2021-01-29 | 2021-06-04 | 北京双杰电气股份有限公司 | Magnetic shield and low-voltage direct-current circuit breaker using same |
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| Publication number | Publication date |
|---|---|
| CN105261502B (en) | 2017-08-29 |
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Denomination of invention: A DC circuit breaker interrupter Effective date of registration: 20210330 Granted publication date: 20170829 Pledgee: China Co. truction Bank Corp Yueqing branch Pledgor: ANDELI GROUP Co.,Ltd. Registration number: Y2021330000258 |