阅读说明：本技术 用于直流断路器的电弧室 (Arc chamber for dc circuit breaker ) 是由 R.加蒂 M.巴托尔 O.普雷斯蒂尼 P.西萨纳 T.施特拉泽尔 于 2018-04-13 设计创作，主要内容包括：一种用于直流断路器的电弧室(10)包括进入侧(E),该进入侧适于接收电弧(50),该电弧在电弧室(10)外部产生并沿向前方向(F)传播；多个堆叠的分隔板(11a…11f)和至少一个抑制屏障(20a,20b)。至少一个抑制屏障(20a,20b)布置在进入侧(E)上,以抑制电弧(50)沿相反方向(R)反向传播出电弧室(10)。包括电弧室的直流断路器。电弧室与断路器在直流电气系统中的使用。(A kind of arc chamber (10) for dc circuit breaker includes approaching side (E), which is suitable for receiving electric arc (50), which generates outside arc chamber (10) and propagate along forward direction (F)；The demarcation plate (11a ... 11f) of multiple stackings and at least one inhibition barrier (20a, 20b).At least one inhibits barrier (20a, 20b) to be arranged on approaching side (E), and to inhibit electric arc (50), (R) backpropagation goes out arc chamber (10) in opposite direction.Dc circuit breaker including arc chamber.The use of arc chamber and breaker in DC electrical system.)

1. a kind of arc chamber (10) for dc circuit breaker, comprising:

Approaching side (E) is adapted to be received in the electric arc for generating outside the arc chamber (10) and propagating along forward direction (F) (50)；

The demarcation plate (11a ... 11f) of multiple stackings；

At least one inhibits barrier (20a, 20b), is arranged on the approaching side (E), to inhibit the electric arc along Xiang Fanfang Go out the arc chamber to (R) backpropagation.

2. arc chamber (10) according to claim 1,

It is characterized in that, at least one described inhibition barrier (20a, 20b) is arranged in the top view of the arc chamber (10) In corner (15a, 15b) on the approaching side (E) of the arc chamber (10).

3. arc chamber (10) according to any one of the preceding claims,

It is characterized in that, the arc chamber (10) includes at least two inhibition barrier (20a, 20b), in the vertical view of the arc chamber In figure, each inhibition barrier (20a, 20b) be arranged on the approaching side (E) of the arc chamber (10) opposite corner (15a, In 15b).

4. arc chamber (10) according to any one of the preceding claims,

It is characterized in that, at least two inhibit barrier (20a, 20b) in the top view of the arc chamber (10), especially weigh Benefit require 3 described at least two inhibit barrier (20a, 20b) be separated from each other so that on the approaching side (E) formed use In the gap that the electric arc enters.

5. arc chamber (10) according to any one of the preceding claims,

It is characterized in that, the inhibition barrier (20a, 20b) includes at least one deflection section (22a, 22b), the deflecting region Section extends to the inside of the arc chamber (10), and especially wherein one or more described deflection section (22a, 22b) designs are used In capturing and deflecting the electric arc (50) or electric arc section (50a-50e), so that it is not propagated back to the gap area, in institute It states and is formed on approaching side (E) between the inhibition barrier (20a, 20b), be used for the entrance of the electric arc (50).

6. arc chamber (10) according to any one of the preceding claims,

It is characterized in that, at least one described inhibition barrier (20a, 20b) is substantially along the heap of the demarcation plate (11a ... 11f) Folded direction (S) extends.

7. arc chamber according to any one of the preceding claims,

It is characterized in that, stacking direction of at least one described inhibition barrier (20a, 20b) in the demarcation plate (11a ... 11f) (S) substantially continuously prolong from an outermost demarcation plate (11a) of the demarcation plate of the multiple stacking (11a ... 11f) on Reach another outermost demarcation plate (11f) of the demarcation plate (11a ... 11f) of the multiple stacking.

8. arc chamber (10) according to claim 6,

It is characterized in that, at least one described inhibition barrier (20a, 20b) is formed by a pile suppressing plate, the suppressing plate is described It is arranged on stacking direction (S) with alignment, wherein each suppressing plate is arranged in the multiple demarcation plate (11a ... 11f) Adjacent separator plates (11a ..., 11f) between.

9. arc chamber (10) according to claim 8,

It is characterized in that, each pair of adjacent demarcation plate of the corresponding suppressing plate setting in the multiple demarcation plate (11a ... 11f) (11a ..., 11f) between.

10. arc chamber (10) according to any one of the preceding claims, which is characterized in that the arc chamber (10) is also wrapped It includes:

The entrance of exhaust passage (16) in the region of at least one inhibition barrier (20a, 20b), wherein the exhaust Channel (16) extends to the gas vent being formed on the sides different from the approaching side (E) of the arc chamber (10).

11. a kind of dc circuit breaker, including according to claim 1 to arc chamber described in any one of 10 (10).

12. according to claim 1 to arc chamber described in any one of 10 (10) and breaker in DC electrical system It uses.

Technical field

All aspects of this disclosure relate generally to a kind of electric arc for being used for dc circuit breaker (DC circuit breaker) Room is related to a kind of dc circuit breaker including arc chamber as disclosed herein, and is related to arc chamber and breaker in direct current Use in electrical system.

Background technique

In certain form of breaker, contact is separated from each other by Mechanical Moving, so that lighting electric arc between contact. Stacked arrangement of the electric arc usually along metal guide rail towards multiple demarcation plates guides, these demarcation plates, which are located at, is full of exchange media The electric arc (arcing) of (switching medium) is indoor.Demarcation plate is usually in the stacking direction side by side substantially parallel Arrangement, wherein forming space between each pair of adjacent demarcation plate.

Electric arc impinges upon on the edge of demarcation plate, and is divided into several electric arc sections.It is desirable that electric arc enters demarcation plate, and Electric arc section stops (stay) in demarcation plate region, until current interruptions.Then, extinguish electric arc.

Due to the electromagnetic interaction among electric arc section, electric arc can be propagated along rearwardly direction, i.e., direction enters demarcation plate It propagates the side of stacking.In the case, it hinders in amount at a reasonable time and extinguishes electric arc, this may cause arc extinction process Undesirable extension.

Summary of the invention

Being designed to provide for the disclosure is a kind of with improved arc extinction ability, even if especially in difficult condition Under also allow more reliably to extinguish electric arc, while keeping the arc chamber of low cost and/or compact design.

In view of the above, the arc chamber according to claim 1 for dc circuit breaker, a kind of basis are provided Dc circuit breaker and arc chamber according to claim 12 and breaker described in claim 11 including arc chamber Use in DC electrical system.

According in a first aspect, providing a kind of arc chamber for dc circuit breaker.Arc chamber includes approaching side, Duo Gedui Folded demarcation plate and at least one inhibition barrier (inhibitor barrier).Approaching side is adapted to be received in outside arc chamber and produces Electric arc that is raw and being propagated along forward direction.At least one suppressing plate is arranged on approaching side, and is constructed and arranged to press down Backpropagation goes out arc chamber to electric arc processed in opposite direction.

According to another aspect of the present disclosure, a kind of dc circuit breaker is provided.Dc circuit breaker includes as described herein Arc chamber.According to the another other aspect of the disclosure, arc chamber and breaker as described herein are provided in DC electrical Use in system.

When electric arc approaching side is enterprising enter the room when, along forward direction towards demarcation plate stacking or heap propagate.By extremely The arrangement and construction of a few suppressing plate inhibit (suppress) the back-propagation once electric arc into room, that is, along reversed It propagates so that electric arc finally leaves room on approaching side again in direction.

In embodiment, in the top view of arc chamber, i.e., on the direction of observation along the stacking direction of demarcation plate, at least One inhibition barrier is arranged in the corner on the approaching side of arc chamber.In addition, arc chamber may include at least two inhibition barriers, In the top view of the room, each of barrier is inhibited to be all disposed in the opposite corner on the approaching side of arc chamber.Optionally, When in the opposite corner on the approaching side in arc chamber setting at least two inhibit barrier when, but at least two inhibit barriers that This is spaced apart, therefore is formed and enter the gap in the demarcation plate region of stacking for electric arc.

The electric arc propagated in opposite direction is often moved to the corner of room from the central area of arc chamber.It is arranged in approaching side Corner in inhibition barrier (optionally, each different one, corner suppressing plate) can help further to improve more effectively or more Selectively prevent the back-propagation of electric arc.The gap entered for electric arc can help ensure that electric arc can substantially in the clear Into demarcation plate region, electric arc is simultaneously effective prevented to be propagated in opposite direction more than the angle on approaching side.

In embodiment, at least one inhibits barrier substantially to extend on the stacking direction of demarcation plate.Substantially edge point The stacking direction of partition extend at least one inhibit barrier can be from an outermost demarcation plate of stacking essentially continuously Extend to another outermost demarcation plate of stacking.

Alternatively, substantially inhibit barrier can be by a pile suppressing plate shape along at least one that the stacking direction of demarcation plate extends At these suppressing plates are arranged in an aligned manner in the stacking direction, wherein the phase of multiple demarcation plates is arranged in each suppressing plate Between adjacent demarcation plate, i.e., between at least a pair of adjacent demarcation plate in multiple demarcation plates.Optionally, corresponding suppressing plate is set It sets between each of adjacent separator plates in multiple demarcation plates, i.e., between each pair of adjacent separator plates in multiple demarcation plates.

In embodiment, arc chamber includes the entrance of exhaust passage in the region that at least one inhibits barrier.At least one A region (wherein providing entrance) for inhibiting barrier is at least most of possible inflow of the thermal current generated by the electric arc propagated Region into entrance.Exhaust passage extends to gas vent.Gas vent is formed in one different from approaching side of arc chamber On side.By this method, hot gas can be directed effectively to its position for not postponing or preventing arc extinction.

Other advantage, feature, aspect and details that can be appropriately combined with embodiment as described herein be wanted in appurtenance Sum the combination of claim, disclose in the description and the appended drawings.

Detailed description of the invention

The disclosure will be described in greater detail with reference to the attached drawings, in the accompanying drawings:

Fig. 1 a-1c shows the cross-sectional schematic side view of the arc chamber according to comparative example, which schematically illustrates The different phase for the electric arc propagated towards the demarcation plate of multiple stackings；

It includes the cross-sectional schematic side view for inhibiting the arc chamber of barrier that Fig. 2 a, which is shown according to an embodiment of the present invention,；And

Fig. 2 b shows the schematic cross-section top view of the arc chamber of Fig. 2 a.

Specific embodiment

Now with detailed reference to various aspects and embodiment.Each aspect and embodiment are provided by way of explanation, and And it is not intended as limiting.The feature that a part as one aspect or embodiment shows or describes can be with any other aspect Or embodiment is used in combination.The disclosure is intended to include such combination and modification.In the accompanying drawings, identical reference marker refers to phase Same or similar part.In order to make it easy to understand, some reference markers are omitted in those attached drawings, the attached drawing is shown formerly Attached drawing put the basically same structure at place in different times.

For illustrative purposes, Fig. 1 a-1c is shown regards according to the schematic cross-sectional side of the arc chamber 10 of comparative example Figure.In Fig. 1 a-1c, stacking or heap includes multiple demarcation plate 11a to 11f, these demarcation plates are arranged with being substantially parallel to each other, and On stacking direction S, between each pair of adjacent demarcation plate 11a-11b, 11b-11c, 11c-11d, 11d-11e, 11e-11f It is spaced apart.In general, stacking direction S corresponds to the up and down direction of room 10.The quantity of demarcation plate shown in the drawings is only made For example, but should not be understood as limiting.

Electric arc 50 is generated in the external of arc chamber 10, for example, in the breaking-off contact of low pressure or medium voltage breaker (not shown) Between element.Electric arc is lighted in the space full of exchange media.When electric arc burns between contact, arc voltage changes not Greatly.At some time point, electric arc is usually towards the stacking of demarcation plate 11a-11f, along the gold of referred to as arc runner (arc runner) Belong to guide rail from contact separation, bending and movement.

In fig 1 a, electric arc 50 is still outside stacking, and propagates along forward direction F, until its arrival, that is, strikes point Until the leading edge of partition 11a-11f.The electric arc 50 that leading edge is located at arc chamber 10 is hit on side thereon, and arc chamber this Side is referred to as approaching side E herein.The voltage due to caused by the electric arc of burning increases, and electric arc further commutes (commute) enter the region of demarcation plate 11a-11f.

In Figure 1b, after impact, divide in space of the electric arc 50 between the adjacent separator plates in demarcation plate 11a-11f At several sections of 50a-50e.Maximum arc voltage is kept, until current interruptions.The cooling effect of demarcation plate 11a-11f can help Extinguish electric arc section 50a-50e and interruptive current.

In the comparative example of Fig. 1 a-1c, due to the phenomenon that being hereinafter referred to as " strile-bacing ", interruptive current may be will increase The required time.Before strile-bacing, the electric arc 50 or electric arc section 50a-50e not extinguished are propagated along inverse direction R.Due to strile-bacing and Caused extra delay causes big energy to be deposited in breaker, and therefore leads to the loss for increasing breaker.

In figure 1 c, the magnetic interaction between electric arc section 50a-50e generates repulsive force, acts on some or all On electric arc section 50a-50e.Electric arc section 50a-50e will be enhanced along the asymmetry of the position of stacking direction S by repulsive force, caused Electric arc section 50a-50e repels relative to its adjacent segment on stacking direction S.In electric arc section 50a, 50c, 50e in Fig. 1 c One or more may further propagate and result on R and strile-back in the opposite direction.

Fig. 2 a shows the side cross-sectional view of the arc chamber 10 according to one embodiment.In fig. 2 a, in the entrance of room 10 It is arranged on the E of side and is disposed with and inhibits barrier 20a, 20b.According to this embodiment, from the section of Fig. 2 b of the view corresponding to Fig. 2 a Top view inhibits barrier 20a, 20b to become readily apparent from relative to the space layout of projection plane.

In figure 2b, any demarcation plate 11 in multiple demarcation plate 11a-11f is illustrated with dashed lines.Inhibit barrier 20a, 20b is arranged in such a way on approaching side E, so that they inhibit electric arc, R backpropagation goes out arc chamber in opposite direction. In other words, inhibit barrier 20a, 20b to be arranged so that they to be essentially prevented thermal current R flows beyond room 10 in opposite direction Into region.

It should be noted that opposite direction R be not necessarily with forward direction F exactly opposite direction, and can for towards enter The inclined direction of side E, such as towards the corner 15a on the approaching side E of room 10, any one of 15b.

In the top view of Fig. 2 b, barrier 20a, 20b is inhibited to be arranged so that when electric arc 50 is propagated along forward direction F, The gap for the entrance of electric arc 50 is formed and (inhibits barrier 20a that is, being formed in, between 20b) (that is, when seeing in a top view or edge The gap when stacking direction of demarcation plate is seen).Electric arc 50 (presents in Fig. 2 a, such as schemes after entering and being divided into electric arc section 50a-50e Shown in 1), electric arc propagates further into the central part of room 10.Then, have can for the pole all or some electric arc section 50a-50e Can travel to forward corner 15a or 15b on the approaching side E of room 10, room 10 back angle 15c or 15d on opposite sides direction.

It is generated by electric arc section 50a-50e, towards any forward corner 15a, even if the hot gas that 15b is propagated is in corresponding electric arc Section 50a-50e may also lead to the heat transfer gas that causes to strile-back and (restrike) after having extinguished.

In the embodiment of Fig. 2 a and 2b, one or more inhibits barrier 20a, 20b to be arranged in the approaching side E of arc chamber 10 On a corner 15a, in 15b or two corner 15a, 15b.In the up-front region of demarcation plate 11a-11f, that is, entering On the E of side, any inhibition barrier 20a, 20b are used as the protection structure around arc position.By means of the inhibition screen being arranged so Hinder 20a, hot gas is channeled out by 20b, to reduce or eliminate a possibility that strile-bacing.When setting at least two inhibit barrier 20a, When 20b, in corresponding corner 15a, 15b, forward corner 15a, 15b are shielded by inhibition barrier 20a, 20b, while being bowed for each When seeing in view, there are gaps between inhibition barrier 20a, 20b.

Electric arc 50 or electric arc section 50a-50e can enter demarcation plate region first in substantially without hindrance mode, while by Barrier 20a, 20b is inhibited to effectively inhibit or prevent the back-propagation (may cause and strile-back) of electric arc.Optionally, inhibit barrier 20a, 20b, which are constructed and/or be arranged so that, inhibits barrier 20a being provided with, and in the region of 20b, air-flow cannot R in opposite direction Enter region across more than arc chamber 10.It should be noted that inhibiting barrier 20a, the quantity of 20b is not limited to two.

In embodiment, inhibit barrier 20a, the outermost separating plate 11a that 20b is stacked from separating plate 11a-11f Extend to another outermost separating plate 11f.In other words: according to this aspect, all spaces between demarcation plate 11a-11f into Enter on side and in such as corresponding angular zone 15a, the finite region (when seeing in a top view) of 15b by inhibiting to shield accordingly Hinder 20a, 20b shielding.Outermost demarcation plate 11a, 11f are the one of demarcation plate 11a-11f stacking in the stacking direction respectively Demarcation plate on end side and another side.

According to this aspect, inhibits barrier 20a, 20b that can be continuously formed, be optionally formed as continuous wall, the continuous wall is whole The corresponding region at the demarcation plate 11a-11f of stacking is covered on body.Alternatively, and this aspect is still fallen within, inhibits barrier 20a, 20b can be formed by the multiple barrier screens for covering the entirety of corresponding region for being less than the demarcation plate 11a-11f stacked, and shape At barrier 20a is inhibited, multiple barrier screens of 20b are still shielded between demarcation plate 11a, 11f on the approaching side in corresponding region All spaces.

Substantially can demarcation plate 11a-11f the stacked on inhibition of entire heap or prevent from may cause the electric arc to strile-back backward It propagates, that is, for each of the electric arc section 50a-50e for moving or propagating in additional space.

In embodiment, barrier 20a, 20b is inhibited to be formed by a pile suppressing plate arranged along stacking direction with alignment, And the suppressing plate of each offer is arranged between the adjacent separator plates in multiple demarcation plate 11a-11f.It is arranged at least a pair of Suppressing plate between adjacent demarcation plate 11a-11f abuts against on two demarcation plates 11a-11b, 11b-11c etc., effectively to prevent Only hot gas moves and/or penetrates beyond the leading edge of the demarcation plate 11a-11f on approaching side E along inverse direction R.Optionally, phase The suppressing plate answered is arranged between each pair of adjacent separator plates of multiple demarcation plate 11a-11f, that is, between demarcation plate 11a-11f Each of space in.

According in this respect, inhibit barrier 20a, 20b is discontinuous；However, some or all between demarcation plate 11a-11f are empty Between on approaching side and when seeing in a top view in such as corresponding angular zone 15a, the finite region of 15b by suppressing plate screen It covers.

The demarcation plate 11a-11f being substantially aligned on stacking direction S forms corresponding inhibition barrier 20a, 20b, leads to It crosses in the region (for example, angular zone 15a, 15b on approaching side E) that demarcation plate 11a-11f is provided and forbids by electric arc 50 or electricity The hot gas that segmental arc 50a-50e is generated flows backward in opposite direction to inhibit or prevent electric arc 50 or electric arc section 50a-50e Back-propagation.

As shown in figure 2b, inhibit barrier 20a, 20b may include corresponding deflection section 22a, 22b, the deflection section 22a, 22b (that is, when seeing in the top view in arc chamber 10) extend to the inside of arc chamber 10.One or more deflection sections 22a, 22b can help to capture and deflect electric arc 50 or electric arc section 50a-50e, so that it does not move or travels to gap area, it should Gap area is formed on approaching side inhibits barrier 20a, between 20b, for providing electric arc 50 to the entrance in arc chamber 10.

In the embodiment of Fig. 2 a-2b, in the back angle 15c, 15d opposite with the approaching side E of room 10, it is provided with exhaust Opening is to discharge thermal current.Strile-bacing or restriking in view of electric arc, discharging hot gas on the side opposite with approaching side is to be not related to Key.In embodiment, arc chamber 10 may also include at least one exhaust passage 16.Exhaust passage 16 inhibits screen at least one Hinder 20a, there is entrance in the region of 20b.Exhaust passage 16 extends to gas vent from entrance.Gas vent is formed in arc chamber On 10 sides different from approaching side.

For example, the outermost demarcation plate 11a in Fig. 2 a is arranged in the top side of room 10, the outermost demarcation plate in Fig. 2 a 11f is arranged in the bottom side of room 10, and the side with back angle 15c, 15d in Fig. 2 b is the rear side of room 10, and except approaching side E it Remaining outer two sides are the first cross side and the second cross side of room 10 respectively.Gas vent can for example be arranged in top side, bottom side, In any one of rear side, the first cross side and second cross side.

At least part hot gas flow generated in the region for being provided with the entrance of exhaust passage 16 is worn into entrance Exhaust passage 16 is crossed, and is finally discharged on the sides different from approaching side of room 10 from room 10.Therefore, less hot gas will The back-propagation on the direction of approaching side, and a possibility that strile-bacing can be further decreased.

In embodiment, the dc circuit breaker (not shown) with arc contact arrangement is provided with electric arc as described herein Room 10.In dc circuit breaker, when carrying out contact opening operation, electric arc is generated, the electric arc is on the approaching side E of arc chamber 10 It receives, and travels to along forward direction in the region of demarcation plate of stacking.At least one being arranged on approaching side E inhibits barrier Being configured so as to inhibition electric arc, R backpropagation goes out arc chamber 10 in opposite direction.It should be noted that being equally provided with arc chamber In 10 dc circuit breaker, some or all of aspects as described herein can be appropriately carried out and/or combined freely of each other.

In embodiment, as described herein, arc chamber 10 is used together with the breaker in DC electrical system.It should be noted that , equally by arc chamber 10 and breaker in DC electrical system in use, can be appropriately carried out and/or freely with each other Combine some or all of aspects as described herein.