CN215869256U - Arc extinguish chamber of circuit breaker - Google Patents
Arc extinguish chamber of circuit breaker Download PDFInfo
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- CN215869256U CN215869256U CN202121203321.3U CN202121203321U CN215869256U CN 215869256 U CN215869256 U CN 215869256U CN 202121203321 U CN202121203321 U CN 202121203321U CN 215869256 U CN215869256 U CN 215869256U
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Abstract
The utility model provides an arc extinguish chamber of a circuit breaker, which comprises side plates arranged oppositely, and a plurality of arc extinguish grid pieces arranged between two opposite side walls of the side plates, wherein the arc extinguish grid pieces are provided with arc inlets, the arc inlets are sequentially divided into an end part area, an arc transition area and a gas production area from top to bottom, the height of the gas production area is greater than that of the arc transition area, and the height of the arc transition area is greater than that of the end part area. Through the shape of change arc extinguishing bars piece, change the inner structure of circuit breaker explosion chamber, make the electric arc of production get into the explosion chamber rapidly and effectively cut electric arc, arc voltage reaches the effect of extinguishing electric arc fast, can extinguish direct current electric arc more effectively.
Description
Technical Field
The utility model relates to the field of low-voltage electrical appliances, in particular to an arc extinguish chamber of a circuit breaker.
Background
The existing arc extinguish chamber of the low-voltage circuit breaker generally comprises two arc isolating walls, an arc extinguish grid group, an arc striking plate, a flame extinguish plate, an arc extinguish grid, a cover plate and screws; during assembly, the arc extinguishing grid sheet combined flame extinguishing sheet is arranged between the two arc isolating walls, then the flame extinguishing sheet and the arc extinguishing grid are assembled above the two arc isolating walls, and finally the two arc isolating walls are fixedly connected with the cover plate arranged above the two arc isolating walls by screws.
The current arc extinguishing chamber of the circuit breaker can play a good effect in an alternating current system, but has a poor direct current arc extinguishing effect, and in order to improve direct current arc extinguishing, one proposal is to arrange a gas generating piece in the arc extinguishing chamber, but the gas generating piece is arranged to influence the arc striking and arc cutting functions of an arc extinguishing grid piece. One solution is to add magnetic material, which not only increases the cost and installation complexity, but also brings polarity to the circuit breaker, and is limited in some application occasions.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides the arc extinguish chamber of the circuit breaker, which has good arc extinguish effect on direct current arc and simple and compact structure.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a circuit breaker explosion chamber, includes the relative curb plate that sets up, install in the polylith arc extinguishing bars piece between the relative both sides wall of curb plate and install in the apron at the top of arc extinguishing bars piece and the relative curb plate that sets up, the lower extreme of arc extinguishing bars piece is equipped with into the arc mouth, advances the arc mouth from last to dividing into tip region, arc transition district and producing the gas district down in proper order, wherein, the both sides cover of arc extinguishing bars piece is equipped with the region that produces the gas piece and corresponds for producing the gas district, produces the height that highly is greater than the arc transition district in gas district, and the height that highly is greater than the tip region in arc transition district.
Preferably, the angle between the tangents to the curves on both sides of the end region is smaller than the angle between the tangents to the curves on both sides of the arc-shaped transition region.
Preferably, the end portion area is U-shaped, the curves at the two sides of the arc transition area are asymmetrically arranged, the difference between the slope of the tangent lines of the curves at the two sides of the arc transition area is greater than a set threshold, and the difference between the slope of the tangent lines of the curves at the two sides of the arc transition area is greater than the difference between the slope of the tangent lines of the curves at the two sides of the end portion area.
Preferably, the arc chute pieces form sharp corners at two sides of the arc inlet.
Preferably, one side of each arc-extinguishing grid piece is provided with an arc striking piece, and one end of each arc striking piece extends to the arc inlets of the arc-extinguishing grid pieces; a through hole is reserved above the arc striking plate.
Preferably, the two sides of two adjacent arc-extinguishing bars are convexly provided with error-proof mounting protrusions matched with the side plates in a mounting manner, the side plates are provided with mounting holes corresponding to the error-proof mounting protrusions, and the heights of the error-proof mounting protrusions on the two sides of the arc-extinguishing bars are different.
Preferably, the arc inlets of two adjacent arc-extinguishing grid pieces are arranged in a staggered manner; the end parts of two adjacent arc-extinguishing grid pieces are overlapped, the arc transition areas b of the two adjacent arc-extinguishing grid pieces are partially overlapped, and the arc inlet of one arc-extinguishing grid piece of the two adjacent arc-extinguishing grid pieces and the other arc-extinguishing grid piece form an overlapping area.
Preferably, the inner part of the cover plate is provided with the flame extinguishing sheets and the flame extinguishing partition plates in a staggered manner.
Preferably, the two flame-extinguishing pieces at the upper end are adjacently arranged; each flame-extinguishing sheet is provided with flame-extinguishing holes, and the density of the flame-extinguishing holes on the uppermost flame-extinguishing sheet is greater than that of the flame-extinguishing holes on the other flame-extinguishing sheets; the flame-out baffle plate is of a hollow frame structure.
Preferably, the outermost arc chute plates of the arc chute have a thickness greater than the thickness of the other arc chute plates.
The utility model relates to an arc extinguish chamber of a circuit breaker, which comprises oppositely arranged side plates, a plurality of arc extinguish grid pieces arranged between two opposite side walls of the side plates, and a cover plate arranged at the tops of the arc extinguish grid pieces and the oppositely arranged side plates; the lower end of the arc extinguishing grid plate is provided with an arc inlet, the arc inlet is sequentially divided into an end part area, an arc transition area and a gas production area from top to bottom, wherein the height of the gas production area is greater than that of the arc transition area, and the height of the arc transition area is greater than that of the end part area; through the shape of change arc extinguishing bars piece, change the inner structure of circuit breaker explosion chamber, make the electric arc of production get into the explosion chamber rapidly to effectively cut electric arc, electric arc voltage reaches the effect of extinguishing electric arc fast, can extinguish direct current electric arc more effectively.
In addition, a through hole is reserved above the arc striking plate, so that gas backflow is facilitated, and the arc extinguishing effect is further enhanced.
Drawings
Figure 1 is an exploded view of the arc chute of the circuit breaker of the present invention;
fig. 2 is a schematic view of the overall structure of the arc extinguishing chamber of the circuit breaker of the utility model;
figure 3 is a schematic structural view of another orientation of the arc chute of the circuit breaker of the present invention;
FIG. 4 is a schematic structural diagram of an embodiment of an arc chute according to the present invention;
fig. 5 is a schematic structural view of another embodiment of the arc chute of the present invention;
fig. 6 is a schematic structural view of another embodiment of the arc chute of the present invention;
figure 7 is a schematic structural view of another embodiment of the arc chute of the circuit breaker of the present invention;
fig. 8 is a schematic structural diagram of another embodiment of the arc chute of the present invention.
Detailed Description
The following further describes a specific embodiment of the arc extinguishing chamber of the circuit breaker according to the present invention, with reference to the examples given in fig. 1 to 8. The circuit breaker arc chute of the present invention is not limited to the description of the following embodiments.
As shown in fig. 1-3, the present invention provides a circuit breaker arc chute. The arc extinguishing device comprises side plates 1 which are oppositely arranged, a plurality of arc extinguishing grid pieces 2 which are arranged between two opposite side walls of the side plates 1 and a cover plate 5 which is arranged at the top of the side plates 1 which are oppositely arranged on the arc extinguishing grid pieces 2. In addition, the arc extinguish chamber of the circuit breaker also comprises an arc striking sheet 3, and one end of the arc striking sheet 3 extends to the arc inlet 201 of the arc extinguish grid sheets 2. The arc extinguish chamber of the circuit breaker has the advantages of simple and compact structure and safe and stable performance.
As shown in figure 1, a flame extinguishing sheet 7 and a flame extinguishing clapboard 6 are staggered in a cover plate 5 at the top of an arc extinguish chamber of the circuit breaker. The flame-extinguishing sheet 7 is used for quickly extinguishing electric arcs and extinguishing smoke generated by electric arc combustion.
The basic operating principle of the circuit breaker is explained below:
after the circuit breaker generates an electric arc, one end of the arc striking piece 3 leads the electric arc into the arc extinguish chamber from the arc inlet 201 of the arc extinguishing grid pieces 2, the generated electric arc rapidly enters the arc extinguish chamber and effectively cuts the electric arc through the improved internal structure of the arc extinguish chamber, and the electric arc voltage rapidly achieves the effect of rapidly extinguishing the electric arc; in addition, the flame extinguishing piece 7 arranged inside the cover plate 5 at the top of the arc extinguishing chamber can quickly extinguish electric arcs and extinguish smoke generated by electric arc combustion, and direct current electric arcs can be effectively extinguished.
As shown in fig. 1 and 4, the lower end of the arc-extinguishing grid 2 of the utility model is provided with an arc inlet 21, the arc inlet 21 is horn-shaped, the arc inlet 21 is divided into an end region a, an arc transition region b and a gas production region c from top to bottom, wherein the region corresponding to the gas production plate 4 sleeved on the two sides of the arc-extinguishing grid 2 is the gas production region c, the height of the gas production region c is greater than that of the arc transition region b, and the height of the arc transition region b is greater than that of the end region. The utility model relates to an arc extinguish chamber of a circuit breaker, which comprises oppositely arranged side plates, a plurality of arc extinguish grid pieces arranged between two opposite side walls of the side plates, and a cover plate arranged at the tops of the arc extinguish grid pieces and the oppositely arranged side plates; the lower end of the arc extinguishing grid plate is provided with an arc inlet, the arc inlet is sequentially divided into an end part area, an arc transition area and a gas production area from top to bottom, wherein the height of the gas production area is greater than that of the arc transition area, and the height of the arc transition area is greater than that of the end part area; through the shape of change arc extinguishing bars piece, change the inner structure of circuit breaker explosion chamber, make the electric arc of production get into the explosion chamber rapidly and effectively cut electric arc, arc voltage reaches the effect of extinguishing electric arc fast, can extinguish direct current electric arc more effectively.
It should be noted that the upper end of the arc-extinguishing grid 2 is the end close to the cover plate, the lower end is the end far from the cover plate, and the arc-shaped line section from top to bottom refers to the direction from the end close to the cover plate to the lower end. The both sides curve of arc extinguishing bars piece 2 divides different regions through different slopes, the both sides cover of arc extinguishing bars piece 2 is equipped with the region that produces gas piece 4 and corresponds and is produced gas district c, contained angle between the tangent line of the both sides curve of tip region, be less than the contained angle between the tangent line of the both sides curve of arc transition district b, consequently, can be according to actual conditions, rationally take the value to setting for the threshold value, with distinguishing tip region and arc transition district b, and then divide out tip region, arc transition district b and produce gas district c.
Preferably, the end region is approximately U-shaped, the width of the end region is small, the curves at the two sides are approximately parallel (actually, the curves are not parallel), the curves at the two sides of the arc-shaped transition region b are asymmetrically arranged, and compared with the difference between the slopes of the curves at the two sides of the end region and the gas production region c, the difference between the slopes of the tangents of the curves at the two sides of the arc-shaped transition region b is much larger than the difference between the slopes of the curves at the two sides of the end region and the gas production region c.
Obviously, the shape of the arc inlet 21 and the number of the partitions of the arc inlet 21 are not limited in the present application, and the number of the partitions of the household inlet 201 in the present application may not be limited to three, but may be more. The setting threshold is not limited in the embodiment of the application, and can be adjusted according to actual conditions.
Fig. 4-6 show three different embodiments of the arc chute 2 of the present invention. The arc chute pieces 2 form sharp angles at two sides of the arc inlet 21, wherein the degrees of the sharp angles at the two sides can be equal or unequal, see fig. 4-6.
As shown in fig. 4, the ratio of the width to the height of the arc inlet 21 of the arc chute 2 of the utility model is 0.8 to 1.8. Preferably, the ratio of the width to the height of the arc-extinguishing grid 2 of the utility model is 1.2.
As shown in fig. 2, one side of the arc-extinguishing grid pieces 2 is provided with an arc-striking piece 3, and one end of the arc-striking piece 3 extends to an arc inlet 201 of the arc-extinguishing grid pieces 2; a through hole 301 is reserved above the arc striking piece 3, namely, the through hole 301 is reserved between the other end of the arc striking piece 3 which is positioned above and the cover plate 5. And a through hole 301 is reserved above the arc striking plate 3, so that gas backflow is facilitated, and the arc extinguishing effect is further enhanced.
As shown in fig. 1 and 3, the two sides of the gas generation area 213 of the arc-extinguishing grid plate 2 are respectively sleeved with gas generation plates 4, the gas generation plates 4 are located between the arc-extinguishing grid plate 2 and the side plates 1 at the two sides, and the height of the gas generation plates 4 is smaller than that of the arc inlet 21. The gas generating sheet structure is arranged between the side plates and the arc extinguishing grid sheets, the middle part of the gas generating sheet structure is of a comb-shaped structure, two sides of the arc extinguishing grid sheets penetrate through gaps of the comb-shaped structure to be fixedly connected with the side plates, and the gas generating sheet structure is arranged and fixed between the arc extinguishing grid sheets and the side plates through the fixing structures of the arc extinguishing grid sheets and the side plates, so that the gas generating sheet structure is stably and reliably arranged, and the gas generating sheet structure is convenient and quick to install. The gas generating sheet 4 can generate gas to accelerate air flow and improve arc extinguishing effect.
Specifically, the specification and size of the gas generation sheet 4 will be described below. The ratio of the height e of the gas generating piece 4 to the height f of the arc inlet 21 is 0.4-0.8; the ratio of the width d of the gas generating sheet 4 to the height e of the gas generating sheet 4 is 0.25-0.75. It should be noted that, the size of the gas generation piece 4 is not limited in the present application, and the size of the gas generation piece 4 can be adjusted according to the actual situation.
As shown in fig. 1 and 3, the arc inlets 21 of two adjacent arc-extinguishing grid plates 2 are arranged in a staggered manner, and the arc inlet 21 of one arc-extinguishing grid plate 2 and the other arc-extinguishing grid plate 2 form an overlapping area 24. The staggered arrangement of the arc inlets 21 of two adjacent arc-extinguishing grid plates 2 can be realized by assembling the same arc-extinguishing grid plates 2 alternately in the forward direction and the reverse direction. The end regions of two adjacent arc-extinguishing grid plates 2 are overlapped, and the arc transition regions b of two adjacent arc-extinguishing grid plates 2 are partially overlapped. The arc inlet 21 of two adjacent arc extinguishing bars 2 is arranged in a staggered manner, so that electric arcs are transmitted and flow between the arc extinguishing bars 2, the electric arcs are effectively cut, the electric arc voltage quickly achieves the effect of quickly extinguishing the electric arcs, and the direct current electric arcs can be effectively extinguished.
As shown in fig. 4, two sides of two adjacent arc-extinguishing grid plates 2 are convexly provided with error-proof mounting protrusions 22 which are mounted and matched with the side plate 1, the side plate 1 is provided with mounting holes corresponding to the error-proof mounting protrusions 22, and the heights of the error-proof mounting protrusions 22 on the two sides of the arc-extinguishing grid plates 2 are different. In the present embodiment, the error-proof mounting protrusions 22 are used for mounting and matching with the mounting holes on the side plate 1 on one hand, and are used for staggered arrangement of the error-proof mounting protrusions 22 on the other hand.
In the embodiment, error-proof mounting protrusions 22 with different heights are arranged on two sides of the arc-extinguishing grid plate 2; accordingly, two adjacent rows of the mounting holes of the side panel 1 may be provided as mounting holes having the same height as the erroneous mounting projections 22. Thus, the arc extinguishing grid pieces 2 of the same type can be installed on the side plates 1 on the two sides in a staggered mode.
As shown in fig. 1, two upper flame-extinguishing sheets 7 are adjacently arranged, and three lower flame-extinguishing sheets 7 and three flame-extinguishing partition plates 6 are staggered; each flame-extinguishing sheet 7 is provided with flame-extinguishing holes 701, and the density of the flame-extinguishing holes 701 on the uppermost flame-extinguishing sheet 7 is greater than that of the flame-extinguishing holes 701 on the other flame-extinguishing sheets 7; the flame-out baffle 6 is a hollow frame structure. In this embodiment, the flame-extinguishing partition plate 6 plays a role in fixedly mounting the flame-extinguishing sheets 7, the density of the flame-extinguishing holes 701 in the uppermost flame-extinguishing sheet 7 is high, the blocking effect on electric arcs is maximum, and the electric arcs are prevented from overflowing out of the arc-extinguishing chamber and damaging electric elements. It should be noted that, the structure and number of the flame-out plates 7, the number of the flame-out holes 701, the arrangement of the flame-out plates 7 and the flame-out partition plates 6, and the number of the flame-out partition plates 6 are not limited in the present application, and may be adjusted according to the actual situation.
As shown in fig. 1, the cover 5 includes a fitting upper cover 51 and a base 52. The upper surface of the base 52 is provided with a mounting protrusion 521 in a protruding manner, and the upper cover 51 is provided with an upper cover mounting hole 511 which is matched with the mounting protrusion 521 in a mounting manner. When the device is installed, the flame-extinguishing partition plate 6 and the flame-extinguishing sheet 7 are sequentially arranged in the base 52; after the flame-out partition plate 6 and the flame-out sheet 7 are installed, the upper cover installation hole 511 of the upper cover 51 is aligned with the installation bulge 521 of the base 52 for installation, and the installation structure of the upper cover 51 and the base 52 is stable and reliable.
In addition, the side wall of the base 52 of the cover plate 5 is also provided with a base projection 522 in a protruding manner, which is matched with the side plate 1 in a mounting manner, and correspondingly, the top of the side plate 1 is provided with a fixing hole 103 which is matched with the base projection 522 in a mounting manner. When mounting, the fixing hole 103 of the side plate 1 is inserted into the base projection 522 of the side wall of the base 52, and the side plate 1 is mounted on the side wall of the base 52.
Fig. 7 and 8 show another embodiment of the arc extinguishing chamber of the circuit breaker. In this embodiment, the outermost arc chute 2 of the arc chute has a different structure from the other arc chute 2. The arc inlet 21 of the outermost arc-extinguishing grid piece 2 is in a trapezoid opening shape, and the area of the arc inlet 21 of the outermost arc-extinguishing grid piece 2 is larger than the area of the arc inlets 21 of other arc-extinguishing grid pieces 2. The arc extinguishing grid pieces 2 on the outermost side adopt arc inlet openings 21 with large openings, so that electric arcs can more smoothly enter the arc extinguishing chamber to extinguish the arc.
As shown in fig. 8, the angle of the sharp corner on both sides of the outermost arc chute piece 2 of the circuit breaker of this embodiment is the same, and is 19 degrees.
As shown in fig. 1, the outermost arc chute plates 2 of the arc chute have a thickness greater than the thickness of the other arc chute plates 2. Preferably, the arc segments forming the arc inlet 21 are in arc transition, so that the arc is transferred more smoothly.
The installation process and the working principle of the arc extinguish chamber are explained in detail with the attached drawings 1-8.
The installation process of the cover plate 5, the flame-extinguishing partition plate 6 and the flame-extinguishing sheet 7 is as follows: the flame-out baffle plate 6 and the flame-out sheet 7 are sequentially arranged in the base 52; after the flame-out partition plate 6 and the flame-out sheet 7 are installed, the upper cover installation hole 511 of the upper cover 51 is aligned with the installation bulge 521 of the base 52 for installation, and the installation structure of the upper cover 51 and the base 52 is stable and reliable.
Two adjacent rows of the mounting holes of the side plate 1 are provided as mounting holes having the same height as the erroneous mounting projections 22. When the arc extinguishing grid plates 2 are installed, the arc extinguishing grid plates 2 of the same type can be installed on the side plates 1 on the two sides in a staggered mode. Meanwhile, the striking plate 3 may be installed at the other side of the arc extinguishing chamber. The fixing hole 103 of the side plate 1 is inserted into the base projection 522 of the side wall of the base 52, and the side plate 1 is attached to the side wall of the base 52.
The middle part of the gas generating sheet structure is of a comb-shaped structure, two sides of the arc extinguishing grid sheet penetrate through gaps of the comb-shaped structure to be fixedly connected with the side plates, and the gas generating sheet structure is installed and fixed between the arc extinguishing grid sheets and the side plates through the fixing structures of the arc extinguishing grid sheets and the side plates, so that the gas generating sheet structure is stable and reliable to install, and the gas generating sheet structure is convenient and quick to install. The gas generating sheet 4 can generate gas to accelerate air flow and improve arc extinguishing effect.
After the circuit breaker generates electric arc, one end of the arc striking piece 3 leads the electric arc into the arc extinguish chamber from the arc inlet 201 of the arc extinguishing grid pieces 2, and through the improved internal structure of the arc extinguish chamber, the electric arc is transferred and flows among the arc extinguish plates 2 which are arranged in a staggered mode inside the arc extinguish chamber, so that the generated electric arc quickly enters the arc extinguish chamber, the electric arc is effectively cut, and the electric arc voltage quickly achieves the effect of quickly extinguishing the electric arc; in addition, the flame extinguishing piece 7 arranged inside the cover plate 5 at the top of the arc extinguishing chamber can quickly extinguish electric arcs and extinguish smoke generated by electric arc combustion, and direct current electric arcs can be effectively extinguished. The gas generating sheet 4 can generate gas to accelerate air flow and improve arc extinguishing effect. And a through hole 301 is reserved above the arc striking plate 3, so that gas backflow is facilitated, and the arc extinguishing effect is further enhanced.
The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.
Claims (10)
1. The utility model provides a circuit breaker explosion chamber, includes curb plate (1) that sets up relatively, installs polylith arc extinguishing bars piece (2) between the relative both sides wall of curb plate (1) and installs in apron (5) at the top of arc extinguishing bars piece (2) and the curb plate (1) that sets up relatively, its characterized in that:
the lower extreme of arc extinguishing bars piece (2) is equipped with into arc mouth (21), advances arc mouth (21) from last to dividing into tip region (a), arc transition district (b) and producing gas district (c) down in proper order, wherein, the both sides cover of arc extinguishing bars piece (2) is equipped with the region that produces gas piece (4) to correspond and is producing gas district (c), produces the height that highly is greater than arc transition district (b) of gas district (c), and the height that highly is greater than tip region (a) of arc transition district (b).
2. The circuit breaker arc chute of claim 1, characterized in that:
the included angle between the tangent lines of the curves at the two sides of the end part area (a) is smaller than the included angle between the tangent lines of the curves at the two sides of the arc transition area (b).
3. The circuit breaker arc chute of claim 1, characterized in that:
the end part area (a) is U-shaped, the curves at the two sides of the arc transition area (b) are asymmetrically arranged, the difference value of the tangent slopes of the curves at the two sides of the arc transition area (b) is greater than a set threshold value, and the difference value of the tangent slopes of the curves at the two sides of the arc transition area (b) is greater than the difference value of the tangent slopes of the curves at the two sides of the end part area (a).
4. The circuit breaker arc chute of claim 1, characterized in that: the arc extinguishing grid plates (2) form sharp corners at two sides of the arc inlet (21).
5. The circuit breaker arc chute of claim 1, characterized in that: one side of each arc-extinguishing grid piece (2) is provided with an arc striking piece (3), and one end of each arc striking piece (3) extends to the arc inlet (201) of each arc-extinguishing grid piece (2); a through hole (301) is reserved above the arc striking plate (3).
6. The circuit breaker arc chute of claim 1, characterized in that: the both sides protrusion of two adjacent arc extinguishing bars piece (2) is equipped with installs complex mistake proofing installation arch (22) with curb plate (1), be equipped with the mounting hole that corresponds with mistake proofing installation arch (22) on curb plate (1), the height difference of mistake proofing installation arch (22) of arc extinguishing bars piece (2) both sides.
7. The circuit breaker arc chute of claim 1, characterized in that: the arc inlets (21) of two adjacent arc extinguishing grid pieces (2) are arranged in a staggered manner; the end regions (a) of two adjacent arc-extinguishing grid plates (2) are overlapped, the arc transition regions (b) of the two adjacent arc-extinguishing grid plates (2) are partially overlapped, and the arc inlet (21) of one arc-extinguishing grid plate (2) of the two adjacent arc-extinguishing grid plates (2) and the other arc-extinguishing grid plate (2) form an overlapping region (24).
8. The circuit breaker arc chute of claim 1, characterized in that: the cover plate (5) is internally provided with flame extinguishing sheets (7) and flame extinguishing partition plates (6) in a staggered manner.
9. The circuit breaker arc chute of claim 8, wherein: two flame extinguishing sheets (7) at the upper end are adjacently arranged; each flame-extinguishing sheet (7) is provided with flame-extinguishing holes (701), and the density of the flame-extinguishing holes (701) on the uppermost flame-extinguishing sheet (7) is greater than that of the flame-extinguishing holes (701) on the other flame-extinguishing sheets (7); the flame-out baffle plate (6) is of a hollow frame structure.
10. The circuit breaker arc chute of claim 1, characterized in that: the thickness of the outermost arc-extinguishing grid plate (2) of the arc-extinguishing chamber is larger than that of other arc-extinguishing grid plates (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121203321.3U CN215869256U (en) | 2021-05-31 | 2021-05-31 | Arc extinguish chamber of circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121203321.3U CN215869256U (en) | 2021-05-31 | 2021-05-31 | Arc extinguish chamber of circuit breaker |
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| Publication Number | Publication Date |
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| CN215869256U true CN215869256U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121203321.3U Active CN215869256U (en) | 2021-05-31 | 2021-05-31 | Arc extinguish chamber of circuit breaker |
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| CN (1) | CN215869256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116072485A (en) * | 2023-03-30 | 2023-05-05 | 河北宝凯电气股份有限公司 | Arc extinguishing system and circuit breaker comprising same |
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2021
- 2021-05-31 CN CN202121203321.3U patent/CN215869256U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116072485A (en) * | 2023-03-30 | 2023-05-05 | 河北宝凯电气股份有限公司 | Arc extinguishing system and circuit breaker comprising same |
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