CN221041011U

CN221041011U - Arc extinguishing chamber and circuit breaker

Info

Publication number: CN221041011U
Application number: CN202322674568.9U
Authority: CN
Inventors: 贾相相; 周望坤; 周正一; 李盛炎; 涂高群; 吴昊
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2024-05-28
Anticipated expiration: 2033-10-07

Abstract

The utility model belongs to the technical field of piezoelectric devices, and discloses an arc extinguishing chamber and a circuit breaker. This explosion chamber inlays the connecting strip of producing gas piece subassembly and establishes in the constant head tank of bars piece subassembly to restricting through the flash barrier and producing gas piece subassembly and deviate from bars piece subassembly, can make bars piece subassembly and produce the relative position of gas piece subassembly fixed, avoid producing gas piece subassembly and shift, be convenient for produce the equipment and the dismantlement of gas piece subassembly and bars piece subassembly, improved dismouting efficiency, and strengthened the arc extinguishing effect, reduced the risk of reburning, improved the arc extinguishing performance of explosion chamber. The circuit breaker comprises the contact assembly and the arc-extinguishing chamber, wherein the arc-extinguishing chamber can eliminate an arc generated by the contact assembly in the opening or closing process, so that the arc-extinguishing effect is improved, the breaking capacity of the circuit breaker is improved, and the safety of the circuit breaker is further improved.

Description

Arc extinguishing chamber and circuit breaker

Technical Field

The utility model relates to the technical field of piezoelectric devices, in particular to an arc extinguishing chamber and a circuit breaker.

Background

The arc-extinguishing chamber is an indispensable part of the universal circuit breaker, and the arc-extinguishing chamber has the function of eliminating the electric arc generated during breaking, and the breaking performance of the circuit breaker is directly influenced by the strength of the arc-extinguishing chamber in the capability of extinguishing the electric arc. The gas production piece of current universal type circuit breaker explosion chamber passes through the riveting to be fixed on the partition arc wall, and the change degree of difficulty of gas production piece is big, and the dismouting process is complicated, and dismouting inefficiency to the gas production piece is fixed on the partition arc wall and is produced the relative position of gas production piece and arc extinguishing bars piece and change easily, influences the arc extinguishing effect, appears reburning easily, causes the contact to burn seriously, endangers personal safety and reduces circuit breaker performance.

Therefore, there is a need for an arc chute and a circuit breaker to solve the problems in the prior art.

Disclosure of utility model

The utility model aims to provide an arc-extinguishing chamber, which can fix the relative positions of a grid plate component and a gas generating plate component, avoid the displacement of the gas generating plate component, facilitate the assembly and disassembly of the gas generating plate component and the grid plate component, improve the disassembly and assembly efficiency, enhance the arc-extinguishing effect, reduce the risk of reburning and improve the arc-extinguishing performance of the arc-extinguishing chamber.

To achieve the purpose, the utility model adopts the following technical scheme:

An arc chute, comprising:

Arc-shield plate;

The grid plate assembly is arranged between the two arc-isolating plates and comprises a plurality of arc-extinguishing grid plates which are arranged at equal intervals, and at least one positioning groove is respectively arranged at two opposite ends of each arc-extinguishing grid plate; the gas production piece assembly comprises a plurality of gas production pieces, the gas production pieces are connected through at least one connecting strip, the gas production pieces are inserted between two adjacent arc extinguishing grid pieces, the connecting strips are clamped in the positioning grooves, and the arc-isolating plates limit the connecting strips to be clamped in the positioning grooves.

Optionally, a limiting block is arranged on the connecting strip between at least one group of two adjacent gas generating sheets, the gas generating sheets and the limiting block are respectively inserted between the two corresponding adjacent arc extinguishing grid sheets, and two sides of the limiting block are respectively attached to the two arc extinguishing grid sheets.

Optionally, the gas production piece subassembly includes two the connecting strip, two the parallel interval of connecting strip sets up, every gas production piece's both ends respectively with corresponding the connecting strip is connected, the both ends of arc extinguishing bars piece are equipped with two respectively the constant head tank, every all peg graft in the constant head tank has the connecting strip.

Optionally, a notch groove is formed in the bottom of each arc extinguishing gate sheet, and the edge shape of one side, deviating from the connecting strip, of each gas generating sheet is matched with the groove wall shape of the notch groove.

Optionally, the gas generating sheet comprises a comb handle part and a comb sheet part, wherein the length and the width of the comb handle part are smaller than those of the comb sheet part, and the comb sheet part is provided with edges matched with the groove walls of the notch grooves.

Optionally, the gas generating sheet assembly further comprises two gas generating plates, the two gas generating plates are respectively arranged on the inner sides opposite to the notch grooves, one end of each gas generating plate is in butt joint with the arc extinguishing grid sheet, and the other end of each gas generating plate is connected with the arc isolation plate.

Optionally, the gas production plate includes first plate body and second plate body, first plate body with the second plate body is the contained angle setting, be equipped with the overlap joint inclined plane on the arc extinguishing leg of arc extinguishing bars piece, first plate body be fixed in on the arc-isolation plate and with the arc-isolation plate riveting, the second plate body butt in on the overlap joint inclined plane.

Optionally, a plurality of installation bosses are respectively arranged at two opposite ends of the arc extinguishing grid sheet, the arc-isolating plate is provided with an installation hole corresponding to the installation boss, and the installation boss is arranged in the installation hole in a penetrating manner and is fixed on the arc-isolating plate.

Optionally, the explosion chamber still includes mounting base, flame extinguishing subassembly and arc extinction lid, mounting base set up in grid sheet assembly's top, two the flash barrier is fixed in relatively mounting base's both sides, be provided with the mounting groove on the mounting base, flame extinguishing subassembly set up in the mounting groove, the arc extinction lid cover is located on the mounting base, the arc extinction lid will flame extinguishing subassembly encapsulation in the mounting groove.

The utility model further aims to provide the circuit breaker, the arc extinguishing chamber can eliminate the arc generated by the contact assembly in the opening or closing process, the arc extinguishing effect is improved, the breaking capacity of the circuit breaker is improved, and the safety of the circuit breaker is further improved.

The circuit breaker comprises a contact assembly and the arc extinguishing chamber, wherein the arc extinguishing chamber is used for eliminating an arc generated by the contact assembly in the opening or closing process.

The beneficial effects are that:

According to the arc extinguishing chamber provided by the utility model, the connecting strip of the gas generating sheet component is embedded in the positioning groove of the arc extinguishing gate sheet, and the gas generating sheet component is limited to be separated from the gate sheet component through the arc barrier, so that the relative positions of the gate sheet component and the gas generating sheet component are fixed, the gas generating sheet component is prevented from shifting, the gas generating sheet component and the gate sheet component are convenient to assemble and disassemble, the disassembly and assembly efficiency is improved, the arc extinguishing effect is enhanced, the risk of re-burning is reduced, and the arc extinguishing performance of the arc extinguishing chamber is improved.

The circuit breaker provided by the utility model comprises the contact assembly and the arc extinguishing chamber, wherein the arc extinguishing chamber can eliminate an arc generated by the contact assembly in the opening or closing process, so that the arc extinguishing effect is improved, the breaking capacity of the circuit breaker is improved, and the safety of the circuit breaker is further improved.

Drawings

Fig. 1 is an exploded view of an arc chute provided by the present utility model;

FIG. 2 is a schematic view of the structure of the gas generant wafer assembly provided in the present utility model;

Fig. 3 is a schematic structural view of an arc extinguishing gate sheet provided by the present utility model;

Fig. 4 is a schematic structural view of the arc extinguishing chamber provided by the utility model when no arc barrier is installed;

Fig. 5 is a schematic structural diagram of the arc extinguishing chamber according to the present utility model at a viewing angle;

Fig. 6 is a schematic structural diagram of the arc extinguishing chamber according to the present utility model at another view angle.

In the figure:

100. arc-shield plate; 110. a mounting hole;

200. A grid assembly; 210. a positioning groove; 220. arc extinguishing grid plates; 221. a notch groove; 222. arc extinguishing legs; 2221. overlap joint inclined plane; 223. a mounting boss; 230. entering an arc notch; 240. an arc striking piece; 241. an arc striking bending part;

300. A gas generating sheet assembly; 310. a connecting strip; 320. a limiting block; 330. a gas generating tablet; 331. a comb handle; 332. a comb sheet part;

400. A gas generating plate; 410. a first plate body; 420. a second plate body;

500. a mounting base; 510. a mounting groove;

600. A flame extinguishing assembly; 610. flame extinguishing sheets; 620. a separator frame;

700. an arc extinction cover; 710. a fastener.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides an arc-extinguishing chamber, as shown in fig. 1-6, the arc-extinguishing chamber includes arc-isolating plates 100, a grid plate assembly 200 and a gas-generating plate assembly 300, the grid plate assembly 200 is arranged between two arc-isolating plates 100, the grid plate assembly 200 includes a plurality of arc-extinguishing grid plates 220 arranged at equal intervals, at least one positioning slot 210 is respectively arranged at two opposite ends of each arc-extinguishing grid plate 220, two groups of gas-generating plates 330 are respectively arranged at two sides of the grid plate assembly 200, each group of gas-generating plate assembly 300 includes a plurality of gas-generating plates 330, the plurality of gas-generating plates 330 are connected through at least one connecting strip 310, the connecting strips 310 are clamped in the positioning slots 210, two ends of each arc-extinguishing grid plate 220 are respectively connected with one arc-isolating plate 100, and the connecting strips 310 are clamped in the positioning slots 210 to form the arc-extinguishing chamber.

The explosion chamber that this embodiment provided, through inlay the connecting strip 310 that produces gas piece subassembly 300 in the constant head tank 210 of arc extinguishing bars 220, and it deviate from the bars piece subassembly 200 to restrict producing gas piece subassembly 300 through the flash barrier 100, can make the relative position of bars piece subassembly 200 and producing gas piece subassembly 300 fixed, avoid producing gas piece subassembly 300 aversion, the equipment and the dismantlement of producing gas piece subassembly 300 and bars piece subassembly 200 of being convenient for have improved dismouting efficiency, and strengthened the arc extinguishing effect, the risk of re-burning has been reduced, the extinction performance of explosion chamber is improved.

Optionally, a limiting block 320 is disposed on a connecting strip 310 between at least one group of two adjacent gas generating plates 330, the gas generating plates 330 and the limiting block 320 are respectively inserted between the corresponding two adjacent arc extinguishing grid plates 220, the width of the limiting block 320 is equal to the gap between the two adjacent arc extinguishing grid plates 220, when the limiting block 320 is inserted between the two adjacent arc extinguishing grid plates 220, two sides of the limiting block 320 are respectively attached to the two corresponding arc extinguishing grid plates 220, the gaps between the limiting block 320 and the arc extinguishing grid plates 220 are completely matched, the gas generating plate assembly 300 is further limited, the position of the gas generating plate assembly 300 relative to the grid plate assembly 200 is guaranteed to be fixed, and the stability of the gas generating plate assembly 300 is improved.

Optionally, in this embodiment, the plurality of gas generating sheets 330 are disposed on the connecting strip 310 at intervals, and gaps between two adjacent gas generating plates 400 are sequentially a first gap, a second gap, a third gap, a fourth gap, and a fifth gap, where the first gap, the third gap, and the fifth gap are each provided with a limiting block 320. The mode of setting the limiting blocks 320 can reduce the setting quantity of the limiting blocks 320, and meanwhile, the gas production quantity of the gas producing plate 400 can be improved to the greatest extent, and the arc extinguishing effect is improved. In other embodiments, the limiting blocks 320 may be disposed in the first gap, the second gap, the third gap, the fourth gap and the fifth gap, so that the stability of the gas generating sheet assembly 300 can be further improved, and the arc extinguishing effect can be improved.

Alternatively, as shown in fig. 2-4, the gas generating plate assembly 300 includes two connecting strips 310, the two connecting strips 310 are arranged in parallel at intervals, two ends of each gas generating plate 330 are respectively connected with the corresponding connecting strips 310, two ends of the arc extinguishing grid plate 220 are respectively provided with two positioning slots 210, and each positioning slot 210 is embedded with one connecting strip 310.

Optionally, the grid assembly 200 includes a plurality of arc extinguishing grid plates 220 arranged at equal intervals along the first direction, and inverted funnel-shaped notch grooves 221 are formed at the bottom of each arc extinguishing grid plate 220, so as to help guide the arc and flame into the notch grooves 221, so that the arc is more easily suppressed and extinguished, and the edge shape of one side of the partial gas generating plate 330 facing away from the connecting strip 310 is matched with the groove wall shape of the notch grooves 221, so that generated gas can be more effectively guided to flow to the arc area, and the arc is more quickly eliminated.

Further, as shown in fig. 5-6, the arc extinguishing bars 220 are arranged at intervals along the first direction, the arc extinguishing chamber further comprises an arc striking plate 240, the arc striking plate 240 is arranged at one end of the bar assembly 200, two sides of the arc striking plate 240 are respectively riveted on the two arc baffles 100, an arc striking bending part 241 is arranged on the arc striking plate 240, and the arc striking bending part 241 extends into the arc entering gap 230, so that an arc is easier to enter the arc extinguishing chamber, and the arc is extinguished.

Optionally, the gas generating plate 330 includes a comb handle 331 and a comb plate 332, and the length and width of the comb handle 331 are smaller than those of the comb plate 332, and the comb plate 332 has edges matching with the groove walls of the notch grooves 221, so that the generated gas can be dispersed more effectively, and thus, the arc can be eliminated better. The design of the comb portion 332 may provide a larger surface area, increase gas release, facilitate faster arc extinction, and the smaller size of the comb handle 331 may provide better fixation, ensuring that the comb-shaped gas-generating plate 330 remains in a stable position during operation, thereby enhancing the reliability of the gas-generating plate 330.

Optionally, the gas generating plate assembly 300 further includes gas generating plates 400, the two gas generating plates 400 are respectively disposed at the inner sides of the arc entering gaps 230, one end of each gas generating plate 400 is abutted with the arc extinguishing grid plate 220, and the other end of the gas generating plate 400 is connected with the arc isolation plate 100. The gas generating plate 400 can play a role in supporting the arc extinguishing gate 220, and provides a more stable supporting structure for the arc extinguishing gate 220, thereby improving the arc extinguishing effect. The gas-generating plate 400 not only provides support, but also guides the generated gas to the area where the arc is extinguished, further enhancing the arc extinguishing effect.

Optionally, each gas generating plate 400 includes a first plate body 410 and a second plate body 420, where the first plate body 410 and the second plate body 420 are disposed at a preset included angle, a lap joint inclined plane 2221 is disposed at the bottom of the arc extinguishing leg 222 of the arc extinguishing gate 220, the first plate body 410 is attached to the arc-isolation plate 100 and riveted with the arc-isolation plate 100, and the second plate body 420 is attached to the lap joint inclined plane 2221. The arrangement of the gas generating plate 400 can generate gas and introduce the gas into the arc extinguishing chamber, and the preset included angle between the first plate body 410 and the second plate body 420 can optimize the gas flow, thereby improving the gas generating efficiency of the gas generating plate 400 and protecting the lower end part of the gas generating plate 330 from being burnt. The first plate body 410 is fixed on the arc-stop plate 100 and riveted with the arc-stop plate 100, and the second plate body 420 is abutted on the lap inclined plane 2221, so that the position stability of the gas generating plate 400 is ensured, effective support is provided for the arc-extinguishing gate 220, and the arc-extinguishing effect of the arc-extinguishing gate 220 is improved.

Optionally, a plurality of mounting bosses 223 are respectively disposed at opposite ends of the arc extinguishing gate 220, mounting holes 110 are disposed on the arc-isolating plate 100 corresponding to the mounting bosses 223, and the mounting bosses 223 are disposed through the mounting holes 110 and are riveted on the arc-isolating plate 100. The connection mode can enable the arc-extinguishing grid plates 220 to be firmly fixed on the arc-isolating plate 100, reduces the possibility of loosening the arc-extinguishing grid plates 220, and further enhances the connection reliability of the arc-extinguishing grid plates 220 and the arc-isolating plate 100.

Optionally, the arc extinguishing chamber further includes a mounting base 500, a flame extinguishing assembly 600 and an arc extinguishing cover 700, the mounting base 500 is disposed at the top of the grid plate assembly 200, two arc baffles 100 are relatively fixed at two sides of the mounting base 500, a mounting groove 510 is formed in the mounting base 500, the flame extinguishing assembly 600 is disposed in the mounting groove 510, the arc extinguishing cover 700 covers the mounting base 500, the flame extinguishing assembly 600 is packaged in the mounting groove 510 by the arc extinguishing cover 700, and a contact part between the arc baffles 100 and the mounting base 500 is pressed on the mounting base 500, so that the dismounting process of the arc baffles 100 is more convenient, the mounting and dismounting processes of the arc baffles 100 can be simplified, and the time cost required for maintenance is reduced. The flame extinguishing assembly 600 can effectively reduce the flame caused by the arc, reduce the harm of the flame to the circuit system and the environment, help to enhance the safety of the arc extinguishing chamber, prevent the fire from spreading, and protect the safety of equipment and operators. The arc extinguishing cover 700 serves to limit the spread of flames and arcs, thereby better controlling the range of flames and arcs and enhancing the safety and reliability of the arc extinguishing chamber.

Optionally, the flame extinguishing assembly 600 includes flame extinguishing plates 610 and a partition frame 620, the flame extinguishing plates 610 and the partition frame 620 are alternately arranged in the installation groove 510 at intervals, and a plurality of through holes are formed in the flame extinguishing plates 610, so that the flame extinguishing plates are more easily extinguished by dispersing gas and flame, thereby reducing the risk of fire spreading.

Optionally, the arc extinguishing chamber further includes a plurality of fasteners 710, the plurality of fasteners 710 are distributed along the circumference of the arc extinguishing cover 700, the arc extinguishing cover covers the top of the installation base 500 and the two arc baffles 100 in the arc extinguishing cover, the arc extinguishing cover and the two arc baffles 100 can be fastened on the installation base 500 at the same time through the plurality of fasteners 710, the structural integrity of the whole arc extinguishing chamber is enhanced, and the moving and dislocation risks between elements are reduced. Specifically, the fastening member 710 is a fastening screw, and a plurality of fastening screws are distributed along the circumferential direction of the arc extinguishing cover 700 to provide a uniform fastening force.

The embodiment also provides a circuit breaker, the circuit breaker comprises a contact assembly and the arc extinguishing chamber, wherein the arc extinguishing chamber is used for extinguishing an arc generated in a switching-off or switching-on process of the contact assembly, so that an arc extinguishing effect is improved, breaking capacity of the circuit breaker is improved, and further safety of the circuit breaker is improved.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. Arc extinguishing chamber, its characterized in that includes:

An arc barrier (100);

The grid plate assembly (200) is arranged between the two arc-isolating plates (100), the grid plate assembly (200) comprises a plurality of arc-extinguishing grid plates (220) which are arranged at equal intervals, and at least one positioning groove (210) is respectively arranged at two opposite ends of each arc-extinguishing grid plate (220); the gas production piece assembly (300) comprises a plurality of gas production pieces (330), wherein the gas production pieces (330) are connected through at least one connecting strip (310), the gas production pieces (330) are inserted between two adjacent arc extinguishing grid pieces (220), the connecting strips (310) are clamped in the positioning grooves (210), and the arc-isolating plates (100) are limited, and the connecting strips (310) are clamped in the positioning grooves.

2. The arc extinguishing chamber according to claim 1, wherein a limiting block (320) is arranged on the connecting strip (310) between at least one group of two adjacent gas generating plates (330), the gas generating plates (330) and the limiting block (320) are respectively inserted between two corresponding adjacent arc extinguishing grid plates (220), and two sides of the limiting block (320) are respectively attached to the two arc extinguishing grid plates (220).

3. The arc extinguishing chamber according to claim 1, wherein the gas generating plate assembly (300) comprises two connecting strips (310), the two connecting strips (310) are arranged at intervals in parallel, two ends of each gas generating plate (330) are respectively connected with the corresponding connecting strips (310), two positioning grooves (210) are respectively arranged at two ends of the arc extinguishing grid plate (220), and each positioning groove (210) is internally inserted with the connecting strip (310).

4. The arc extinguishing chamber according to claim 1, characterized in that the bottom of each arc extinguishing gate sheet (220) is provided with a notch groove (221), and the edge shape of one side of the gas generating sheet (330) facing away from the connecting strip (310) is matched with the groove wall shape of the notch groove (221).

5. The arc chute of claim 4 wherein said gas generating plate (330) comprises a comb handle portion (331) and a comb plate portion (332), said comb handle portion (331) having a length and width that are less than the length and width of said comb plate portion (332), said comb plate portion (332) having edges that mate with the walls of said notched grooves (221).

6. The arc extinguishing chamber according to claim 4, further comprising a gas generating plate (400), wherein the gas generating plate (400) is disposed on an inner side opposite to the notch groove (221), one end of the gas generating plate (400) is abutted against the arc extinguishing gate sheet (220), and the other end of the gas generating plate (400) is connected with the arc barrier sheet (100).

7. The arc extinguishing chamber according to claim 6, wherein the gas generating plate (400) comprises a first plate body (410) and a second plate body (420), the first plate body (410) and the second plate body (420) are arranged at an included angle, an arc extinguishing leg (222) of the arc extinguishing gate sheet (220) is provided with an overlap slope (2221), the first plate body (410) is fixed on the arc isolation plate (100), and the second plate body (420) is abutted to the overlap slope (2221).

8. The arc extinguishing chamber according to claim 1, wherein a plurality of mounting bosses (223) are respectively disposed at opposite ends of the arc extinguishing gate sheet (220), mounting holes (110) are disposed on the arc-isolating plate (100) corresponding to the mounting bosses (223), and the mounting bosses (223) are disposed through the mounting holes (110) and are fixed on the arc-isolating plate (100).

9. The arc extinguishing chamber according to claim 1, further comprising a mounting base (500), a flame extinguishing assembly (600) and an arc extinguishing cover (700), wherein the mounting base (500) is arranged at the top of the grid plate assembly (200), two arc baffles (100) are relatively fixed at two sides of the mounting base (500), a mounting groove (510) is formed in the mounting base (500), the flame extinguishing assembly (600) is arranged in the mounting groove (510), the arc extinguishing cover (700) is covered on the mounting base (500), and the flame extinguishing assembly (600) is encapsulated in the mounting groove (510) by the arc extinguishing cover (700).

10. A circuit breaker comprising a contact assembly and an arc chute according to any one of claims 1-9 for extinguishing an arc generated by the contact assembly during opening or closing.