CN213635881U - Arc extinguish chamber structure of low-voltage circuit breaker - Google Patents
Arc extinguish chamber structure of low-voltage circuit breaker Download PDFInfo
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- CN213635881U CN213635881U CN202023223462.XU CN202023223462U CN213635881U CN 213635881 U CN213635881 U CN 213635881U CN 202023223462 U CN202023223462 U CN 202023223462U CN 213635881 U CN213635881 U CN 213635881U
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Abstract
An arc extinguish chamber structure of a low-voltage circuit breaker belongs to the technical field of low-voltage electrical appliances. The arc extinguishing grid piece array comprises a pair of side walls, an arc striking piece and a group of arc extinguishing grid pieces, wherein the pair of side walls are arranged at intervals, the arc extinguishing grid pieces are arranged between the pair of side walls in an array mode, and the arc striking piece is installed on the outer side of one end of each arc extinguishing grid piece in the array mode and extends towards the interior of the arc extinguishing chamber; a set of arc extinguishing bars piece is including a set of first arc extinguishing bars piece, a set of second arc extinguishing bars piece and a set of third arc extinguishing bars piece, a set of first arc extinguishing bars piece is located one side of keeping away from the arc ignition piece of a set of second arc extinguishing bars piece, a set of third arc extinguishing bars piece is located one side that is close to the arc ignition piece of a set of second arc extinguishing bars piece, the bottom of a set of first arc extinguishing bars piece, the bottom of a set of second arc extinguishing bars piece and the bottom of a set of third arc extinguishing bars piece are step-like arrangement with the state that highly progressively increases up towards the position at arc ignition piece place. The arc is ensured to easily enter and approach the arc striking plate so as to meet the requirement of adaptively increasing the number of arc extinguishing grid plates under the condition that the operating voltage of a power system is continuously improved.
Description
Technical Field
The utility model belongs to the technical field of low-voltage apparatus, concretely relates to low-voltage circuit breaker's explosion chamber structure.
Background
As is known in the art, a low-voltage frame circuit breaker is a component of a low-voltage electrical apparatus with a large capacity, and is mainly used in an industrial power system, and is capable of ensuring the on/off of a circuit under a rated load and automatically opening the circuit in an abnormal state (e.g., an overload or a short circuit) of the circuit.
Fig. 1 is a schematic view of an arc chute structure of a low-voltage circuit breaker in the prior art, and as shown in fig. 1, a set of arc chute plates 3 made of metal are arranged between a pair of side walls 1 (only the left side wall is shown in fig. 1) which are arranged opposite to each other and made of insulating material, and are longitudinally parallel to each other and are spaced from each other (through insertion of arc chute plate pins). When the circuit breaker is disconnected, namely, electric arcs can be generated in the process that the moving contact of the structural system of the contact system is repelled relative to the static contact, and the electric arcs move towards the direction of the arc-extinguishing grid pieces 3 under the action of the magnetic field and the 'air blowing' of the arc-extinguishing chamber, so that the electric arcs are divided by the arc-extinguishing grid pieces 3 and cooled, the electric arc voltage is improved, and the deionization effect is enhanced. In order to improve the 'air blowing' effect, the air generating pieces 6 are arranged on two sides of the leg parts of the arc-extinguishing grid pieces 3, strong arc light and high temperature of thousands K (K: arc temperature) are accompanied in the process of generating electric arc, the air generating pieces generate gas beneficial to arc extinguishing under high-temperature firing, the electric arc is cooled, meanwhile, the pressure intensity of the arc-extinguishing chamber is increased by the generation of the gas, the electric arc is conveniently driven to move towards the arc-extinguishing grid direction (namely towards the direction of an arc gas outlet), and therefore the purpose of extinguishing the electric arc is achieved.
With the development of electric utilities, the operating voltage (also referred to as "operating voltage") of electric power systems is increasing, for example, the ac voltage reaches 1500V (volts), and the existing arc extinguishing chambers of circuit breakers usually adopt measures for increasing the number of arc extinguishing grids in order to adapt to sufficient arc voltage, but such measures can greatly reduce the exhaust passage (passage for exhausting arc gas) of the whole arc extinguishing chamber, thereby having an adverse effect on the desired arc extinguishing effect. In view of the foregoing, there is a need for improvement, and the technical solutions described below are made in this context.
SUMMERY OF THE UTILITY MODEL
The task of the utility model is to provide a help avoiding the striking piece to produce the arc gas discharge passage of explosion chamber and blockking the influence and can ensure that electric arc gets into the explosion chamber structure of low-voltage circuit breaker near the striking piece in order to satisfy adaptability increase arc extinguishing bars piece quantity's requirement under the constantly rising situation of power system operating voltage easily.
The utility model aims to provide an arc extinguish chamber structure of a low-voltage circuit breaker, which comprises a pair of side walls, an arc striking plate and a group of arc extinguishing grid plates, wherein the side walls are arranged at intervals, the arc extinguishing grid plates are arranged between the side walls, and the arc striking plate is arranged outside one end of the arc extinguishing grid plates of the array and extends into the arc extinguish chamber; a set of arc extinguishing bars piece include a set of first arc extinguishing bars piece I, a set of second arc extinguishing bars piece II and a set of third arc extinguishing bars piece III, a set of first arc extinguishing bars piece I is located keeping away from of a set of second arc extinguishing bars piece II one side of arc striking piece, a set of third arc extinguishing bars piece III is located being close to of a set of second arc extinguishing bars piece II one side of arc striking piece to the bottom of a set of first arc extinguishing bars piece I, the bottom of a set of second arc extinguishing bars piece II and the bottom of a set of third arc extinguishing bars piece III towards the position at arc striking piece place is step-like arrangement with the state that highly progressively increases up.
In a specific embodiment of the present invention, the bottom of the first set of arc-extinguishing grid pieces i is the first bottom edge i of the arc-extinguishing grid pieces, the bottom of the second set of arc-extinguishing grid pieces ii is the second bottom edge ii of the arc-extinguishing grid pieces, the bottom of the third set of arc-extinguishing grid pieces iii is the third bottom edge iii of the arc-extinguishing grid pieces, and the first bottom edge i of the arc-extinguishing grid pieces, the second bottom edge ii of the arc-extinguishing grid pieces and the third bottom edge iii of the arc-extinguishing grid pieces face the arc-striking pieces, and the positions are arranged in a step-like manner in a state of gradually increasing height.
In another specific embodiment of the present invention, the top surface of the first set of arc chute plates i is the first top edge i of the arc chute plates, the top surface of the second set of arc chute plates ii is the second top edge ii of the arc chute plates, and the top surface of the third set of arc chute plates iii is the third top edge iii of the arc chute plates, the first top edge i of the arc chute plates is flush with the second top edge ii of the arc chute plates, and the third top edge iii of the arc chute plates is lower than the second top edge ii of the arc chute plates.
In another specific embodiment of the present invention, the height of the first arc chute piece i itself is greater than the height of the second arc chute piece ii itself, and the height of the second arc chute piece ii itself is greater than the height of the third arc chute piece iii.
In another specific embodiment of the present invention, the set of first arc-extinguishing grid pieces i includes at least one first arc-extinguishing grid piece i; the group of second arc-extinguishing grid pieces II comprises at least one second arc-extinguishing grid piece II; and the group of third arc-extinguishing grid pieces III comprises at least one third arc-extinguishing grid piece III.
In another specific embodiment of the present invention, a first narrow slit i is formed on the first arc-extinguishing grid piece i, and the first narrow slit i is offset to one side of the first arc-extinguishing grid piece i in the width direction; a second narrow slit II is formed on the second arc-extinguishing grid plate II, and the second narrow slit II is offset to one side of the second arc-extinguishing grid plate II in the width direction; a third narrow slit III is formed on the third arc-extinguishing grid piece III, and the third narrow slit III is offset on one side of the third arc-extinguishing grid piece III in the width direction; after the group of first arc-extinguishing grid pieces, the group of second arc-extinguishing grid pieces and the group of third arc-extinguishing grid pieces are installed, the narrow slits on the adjacent arc-extinguishing grid pieces are staggered in the width direction.
In the utility model discloses a more and a concrete embodiment, the striking piece constitutes has striking piece installation department, first bending portion I and second bending portion II, the installation department with third arc chute piece III is parallel, and first bending portion I is towards after bending the inside extension of explosion chamber, and second bending portion II is bent the constitution then by first bending portion I and this second bending portion II is bent equally and is extended inside the explosion chamber after bending.
In yet another specific embodiment of the present invention, a deionization device is disposed above the first set of arc-extinguishing grid pieces i, the second set of arc-extinguishing grid pieces ii and the third set of arc-extinguishing grid pieces iii.
In a still more specific embodiment of the present invention, the first arc chute i has a first arc chute leg portion, and the first arc chute leg portion is covered with a gas generating member.
The technical scheme provided by the utility model the technical effect lie in: because the arc-extinguishing grid pieces are designed into a group of first arc-extinguishing grid pieces I, a group of second arc-extinguishing grid pieces II and a group of third arc-extinguishing grid pieces III, and are arranged in a step-shaped manner in a state that the heights of the arc-extinguishing grid pieces are gradually increased towards the positions where the arc-striking pieces are located, the arc gas discharge channel cannot be blocked by the arc-striking pieces, so that the arc can be ensured to easily enter the arc-striking pieces to be close to the arc-striking pieces, and the requirement of adaptively increasing the number of the arc-extinguishing grid pieces under the condition that the operating voltage of a power system.
Drawings
Fig. 1 is a schematic view of an arc chute structure of a low-voltage circuit breaker in the prior art.
Fig. 2 is the arc extinguish chamber structure diagram of the low-voltage circuit breaker.
Fig. 3 is a schematic side view of the interior of the arc chute of fig. 2 with one side wall removed.
Fig. 4 is a perspective view of the first, second, and third arc chute plates i, ii, and iii shown in fig. 2 and 3.
Figure 5 is a schematic side view of the arc chute inside the circuit breaker.
Fig. 6 is a detailed structural view of the gas generating member shown in fig. 5.
Fig. 7 is a side view of fig. 6.
Detailed Description
In order to make the technical essence and advantages of the present invention more clear, the applicant below describes in detail the embodiments, but the description of the embodiments is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and not essential, should be considered as the technical scope of the present invention.
In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are exemplified by the illustrated position status, and thus, it should not be understood as a specific limitation to the technical solution provided by the present invention.
Referring to fig. 2 and 3, a pair of sidewalls 1, an arc runner 2 and a set of arc chute plates 3 of the structural system of the arc chute are shown, the pair of sidewalls 1 are spaced apart, the arc chute plates 3 are arrayed between the pair of sidewalls 1, the arc runner 2 is disposed between the pair of sidewalls 1 at a position corresponding to one side of the set of arc chute plates 3, and a lower portion of the arc runner 2 extends toward the interior of the arc chute.
As the technical scheme provided by the utility model: the group of arc-extinguishing grid pieces 3 comprises a group of first arc-extinguishing grid pieces I31, a group of second arc-extinguishing grid pieces II 32 and a group of third arc-extinguishing grid pieces III 33, the group of first arc-extinguishing grid pieces I31 are located on one side, far away from the arc-striking piece 2, of the group of second arc-extinguishing grid pieces II 32, the group of third arc-extinguishing grid pieces III 33 are located on one side, near the arc-striking piece 2, of the group of second arc-extinguishing grid pieces II 32, and the bottoms of the group of first arc-extinguishing grid pieces I31, the group of second arc-extinguishing grid pieces II 32 and the group of third arc-extinguishing grid pieces III 33 face towards the position where the arc-striking piece 2 is located and are arranged in a step-like mode in a gradually increasing height mode.
According to the above description, in conjunction with the illustrations of fig. 2 and 3 and the common general knowledge, if the arc runner 2 is shifted to the left of the position state shown in fig. 2, the third set of arc chute plates iii 33 is shifted to the left accordingly to embody the arrangement thereof accompanying the arc runner 2.
The bottom of the first arc-extinguishing grid piece group I31 is an arc-extinguishing grid piece first bottom edge I313, the bottom of the second arc-extinguishing grid piece group II 32 is an arc-extinguishing grid piece second bottom edge II 323, the bottom of the third arc-extinguishing grid piece group III 33 is an arc-extinguishing grid piece third bottom edge III 333, and the arc-extinguishing grid piece first bottom edge I313, the arc-extinguishing grid piece second bottom edge II 323 and the arc-extinguishing grid piece third bottom edge III 333 are arranged in a step shape in a state of gradually increasing height towards the position of the arc striking piece 2.
The group of first arc-extinguishing grid pieces I31 comprises at least one first arc-extinguishing grid piece I31; the group of second arc-extinguishing grid pieces II 32 comprises at least one second arc-extinguishing grid piece II 32; the group of third arc-extinguishing grid pieces III 33 comprises at least one third arc-extinguishing grid piece III 33.
Preferably, a plurality of first arc-extinguishing grid pieces I31, a plurality of second arc-extinguishing grid pieces II 32 and a plurality of third arc-extinguishing grid pieces III 33 are arranged together.
The top surface of the first set of arc-extinguishing grid pieces I31 is the first top edge I312 of the arc-extinguishing grid pieces, the top surface of the second set of arc-extinguishing grid pieces II 32 is the second top edge II 322 of the arc-extinguishing grid pieces, the top surface of the third set of arc-extinguishing grid pieces III 33 is the third top edge III 332 of the arc-extinguishing grid pieces, the first top edge I312 of the arc-extinguishing grid pieces is flush with the second top edge II 322 of the arc-extinguishing grid pieces, and the third top edge III 332 of the arc-extinguishing grid pieces is lower than the second top edge II 322 of the arc-extinguishing grid pieces.
From the illustration of fig. 3, it can be confirmed that the present invention, as a preferred example, aligns the first top edge i 312 of the arc-extinguishing grid with the second top edge ii 322 of the arc-extinguishing grid upwards in the height direction, i.e. the upper surfaces of the two are at the same horizontal plane, and the third top edge iii 332 of the arc-extinguishing grid is lower than the second top edge ii 322 of the arc-extinguishing grid, so as to leave a gap above the group of third arc-extinguishing grid iii 33, and facilitate the arc gas to enter the vent hole 41 to be mentioned below through the gap.
The height of the first arc-extinguishing grid piece I31 is larger than that of the second arc-extinguishing grid piece II 32, and the height of the second arc-extinguishing grid piece II 32 is larger than that of the third arc-extinguishing grid piece III 33.
As shown in fig. 3, the height of the first set of arc chute plates i 31 is a, the height of the second set of arc chute plates ii 32 is b, and the height of the third set of arc chute plates iii 33 is c, a > b > c. The applicant needs to state that: the term height as used herein is also to be understood as length.
In the present embodiment, for example, fig. 3 shows ten first arc-extinguishing grid pieces i 31, five second arc-extinguishing grid pieces ii 32, and four third arc-extinguishing grid pieces iii 33, which obviously should not be limited by their numbers and the specific numbers therebetween.
Referring to fig. 4, a first narrow slit i 311 is formed on each of the first arc-extinguishing grid pieces i 31 in the group, and the first narrow slit i 311 is offset to one side of the first arc-extinguishing grid piece i 31 in the width direction; a second narrow slit II 321 is formed on each second arc-extinguishing grid II 32 in the group, and the second narrow slit II 321 is offset to one side of the second arc-extinguishing grid II 32 in the width direction; after the group of first arc-extinguishing grid pieces 31, the group of second arc-extinguishing grid pieces 32 and the group of third arc-extinguishing grid pieces 33 are installed, the narrow slits on the adjacent arc-extinguishing grid pieces are staggered in the width direction.
As shown in fig. 2 and 3, the arc tab 2 includes an arc tab mounting portion 21, a first bent portion i 22 and a second bent portion ii 23, the mounting portion is parallel to the third arc chute pieces iii 33, the first bent portion i 22 extends toward the inside of the arc chute after being bent, the second bent portion ii 23 is formed by sequentially bending the first bent portion i 22, and the second bent portion ii 23 also extends toward the inside of the arc chute after being bent.
Referring to fig. 5, a deionization apparatus 5 is disposed above the first set of arc chute plates i 31, the second set of arc chute plates ii 32, and the third set of arc chute plates iii 33. The arc gas is extinguished by the deionization unit 5.
The arc-extinguishing chamber comprises a top cover 4, the top cover 4 is positioned on the top of the arc-extinguishing chamber, the top cover 4 is provided with the above-mentioned vent hole 41, and the periphery of the vent hole 41 is formed into an airtight cover. From the foregoing description, it can be confirmed that: the top cover 4 is arranged between the pair of side walls 1 and matches with the pair of side walls 1 to form the external shape of the arc extinguish chamber.
Referring to fig. 5 to 7, the first arc chute pieces i 31 have first arc chute piece legs, and the gas generating member 6 covers the first arc chute piece legs. When the breaker is in an open state, the moving contact 100 swings to the right side, the electric arc on the moving contact enters the arc extinguish chamber, the electric arc burns the gas generating piece 6, and the gas generating piece 6 releases gas. Promote electric arc and get into arc extinguishing bars piece 3, because the utility model discloses in, aforementioned arc extinguishing bars piece 3 includes the three kinds of different arc extinguishing bars pieces of height (being "length") that have made detailed description on it, a set of first arc extinguishing bars piece I31, a set of second arc extinguishing bars piece II 32 and a set of third arc extinguishing bars piece III 33 promptly, and the bars piece that is close to the installation department of aforementioned arc ignition piece 2 more and more short to for having guaranteed the spacious of air flue, the electric arc of being convenient for gets into second arc extinguishing bars piece II 32 and third arc extinguishing bars piece III 33. The grid plates of the arc extinguish chamber can contact the electric arc, and the performance of the arc extinguish chamber is improved.
Referring to fig. 6 and 7, the gas generating member 6 is usually made of a gas generating material, and the gas generating member 6 is used to cover the grid legs of the arc chute 3. Specifically, the first arc chute I31 is covered by the chute legs. The gas generating member 6 is formed with a tapered portion 61 and a pair of gas generating member side walls 62, and the tapered portion 61 and the pair of side walls 62 form the outer shape of the gas generating member 6. And the shape of the inclined wedge part 61 enables the gas generating piece 6 to adapt to the shape of the grid leg, thereby forming a coating effect. The inclined wedge part 61 is further provided with a plurality of partition plates 63 at the inner side, and the plurality of partition plates 63 are used for forming a plurality of compartments in the gas generating member 6. The compartments separate the columns of first arc chute blades i 31 when the gas generating member 6 is mounted on the grid legs.
In order to ensure the installation of the gas generating piece 6, a first installation bulge I611 is arranged on the installation surface of the inclined wedge part 61 attached to the side wall 1, and a second installation bulge II 631 is arranged on the installation surface of the partition plate 63 attached to the side wall 1. The first mounting protrusion i 611 and the second mounting protrusion ii 631 are inserted into corresponding holes on the side wall 1, and are fixed by, for example, ultrasonic welding. Because the first mounting protrusion I611 and the second mounting protrusion II 631 which are at different heights are adopted, the gas generating piece 6 is reliably mounted. More preferably, the first mounting protrusion i 611 and/or the second mounting protrusion ii 631 have square ends, so that the gas generating element 6 is not easily twisted and is more reliably mounted.
In conclusion, because the utility model discloses a three groups of arc chute pieces, the base of three groups of arc chute pieces arranges into the step form that the height becomes high gradually on the direction of the installation department that is close to arc ignition piece 2 to make electric arc not receive the blockking of arc ignition piece, get into the arc chute piece that is close to arc ignition piece 2 more easily, thereby compensatied the not enough in the prior art faithfully, had honored the technical effect that the applicant elucidated in above technical effect fence objectively, had no loss for being an extremely technological scheme.
Claims (9)
1. An arc extinguish chamber structure of a low-voltage circuit breaker comprises a pair of side walls (1), an arc striking plate (2) and a group of arc extinguish grid plates (3), wherein the side walls (1) are arranged at intervals, the arc extinguish grid plates (3) are arrayed between the side walls (1), and the arc striking plate (2) is installed on the outer side of one end of the arc extinguish grid plates (3) of the array and extends towards the inside of the arc extinguish chamber; the arc extinguishing grid piece is characterized in that the arc extinguishing grid piece (3) comprises a first arc extinguishing grid piece I (31), a second arc extinguishing grid piece II (32) and a third arc extinguishing grid piece III (33), the first arc extinguishing grid piece I (31) is located on one side, far away from the arc striking piece (2), of the second arc extinguishing grid piece II (32), the third arc extinguishing grid piece III (33) is located on one side, close to the arc striking piece (2), of the second arc extinguishing grid piece II (32), the bottom of the first arc extinguishing grid piece I (31), the bottom of the second arc extinguishing grid piece II (32) and the bottom of the third arc extinguishing grid piece III (33) are arranged in a step-shaped mode in a mode that the height gradually increases gradually.
2. The arcing chamber structure of a low-voltage circuit breaker according to claim 1, wherein the bottom of the first set of first arc chute plates i (31) is configured as first bottom edge of arc chute plates i (313), the bottom of the second set of second arc chute plates ii (32) is configured as second bottom edge of arc chute plates ii (323), the bottom of the third set of third arc chute plates iii (33) is configured as third bottom edge of arc chute plates iii (333), and the first bottom edge of arc chute plates i (313), the second bottom edge of arc chute plates ii (323), and the third bottom edge of arc chute plates iii (333) are arranged in a step-like manner with gradually increasing heights toward the position of the arc runner (2).
3. Arc chute structure of a low-voltage circuit breaker according to claim 1, characterized in that the top surface of said first group of arc chute pieces i (31) is constituted as a first top edge of arc chute pieces i (312), the top surface of said second group of arc chute pieces ii (32) is constituted as a second top edge of arc chute pieces ii (322), and the top surface of said third group of arc chute pieces iii (33) is constituted as a third top edge of arc chute pieces iii (332), the first top edge of arc chute pieces i (312) is flush with the second top edge of arc chute pieces ii (322), and the third top edge of arc chute pieces iii (332) is lower than the second top edge of arc chute pieces ii (322).
4. Arc chute structure of a low-voltage circuit breaker according to claim 1, 2 or 3, characterized in that the height of the first arc chute i (31) itself is greater than the height of the second arc chute ii (32) itself, while the height of the second arc chute ii (32) itself is greater than the height of the third arc chute iii (33).
5. The interrupting chamber structure of a low-voltage circuit breaker according to claim 1, 2 or 3, characterized in that said set of first arc chute pieces I (31) comprises at least one of said first arc chute pieces I (31); the group of second arc-extinguishing grid pieces II (32) comprises at least one second arc-extinguishing grid piece II (32); the group of third arc-extinguishing grid pieces III (33) comprises at least one third arc-extinguishing grid piece III (33).
6. The arcing chamber structure of the low-voltage circuit breaker according to claim 1, 2 or 3, characterized in that a first slot i (311) is formed on the first arc chute piece i (31), and the first slot i (311) is offset to one side of the first arc chute piece i (31) in the width direction; a second narrow gap II (321) is formed on the second arc-extinguishing grid II (32), and the second narrow gap II (321) is offset to one side of the second arc-extinguishing grid II (32) in the width direction; a third narrow slit III (331) is formed on the third arc-extinguishing grid piece III (33), and the third narrow slit III (331) is offset to one side of the third arc-extinguishing grid piece III (33) in the width direction; after a group of first arc-extinguishing grid pieces I (31), a group of second arc-extinguishing grid pieces II (32) and a group of third arc-extinguishing grid pieces III (33) are installed, the narrow gaps on the adjacent arc-extinguishing grid pieces are staggered in the width direction.
7. Arc extinguishing chamber structure of low-voltage circuit breaker according to claim 1, characterized in that arc striking piece (2) constitute have arc striking piece installation department (21), first bending part I (22) and second bending part II (23), the installation department with third arc chute piece III (33) is parallel, and first bending part I (22) is towards after bending the inside extension of arc extinguishing chamber, second bending part II (23) is bent the constitution then by first bending part I (22) and this second bending part II (23) is bent the same and is extended inside the arc extinguishing chamber.
8. Arc chute arrangement for low-voltage circuit breakers according to claim 1, characterized in that a deionization means (5) is arranged in a position above said first (31), second (32) and third (33) set of grids.
9. Arc chute arrangement for a low-voltage circuit breaker according to claim 1 or 2 or 3 or 8, characterized in that said first arc chute i (31) has a first arc chute leg covered with a gas generating element (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023223462.XU CN213635881U (en) | 2020-12-28 | 2020-12-28 | Arc extinguish chamber structure of low-voltage circuit breaker |
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| CN202023223462.XU CN213635881U (en) | 2020-12-28 | 2020-12-28 | Arc extinguish chamber structure of low-voltage circuit breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117594373A (en) * | 2024-01-11 | 2024-02-23 | 诚硕电气有限公司 | Explosion chamber and arc extinguishing device |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117594373A (en) * | 2024-01-11 | 2024-02-23 | 诚硕电气有限公司 | Explosion chamber and arc extinguishing device |
| CN117594373B (en) * | 2024-01-11 | 2024-04-05 | 诚硕电气有限公司 | Explosion chamber and arc extinguishing device |
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