CN117810045B - Arc extinguishing structure of circuit breaker - Google Patents
Arc extinguishing structure of circuit breaker Download PDFInfo
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- CN117810045B CN117810045B CN202410231562.0A CN202410231562A CN117810045B CN 117810045 B CN117810045 B CN 117810045B CN 202410231562 A CN202410231562 A CN 202410231562A CN 117810045 B CN117810045 B CN 117810045B
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- 238000007664 blowing Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000010891 electric arc Methods 0.000 description 16
- 230000006872 improvement Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 4
- 230000010485 coping Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention provides an arc extinguishing structure of a circuit breaker, which belongs to the technical field of circuit breakers and comprises a shell, a moving contact, a fixed arc extinguishing assembly and a movable arc extinguishing assembly, wherein the fixed contact is fixedly arranged at the bottom of the inner side of the shell, the fixed arc extinguishing assembly and the movable arc extinguishing assembly are arranged in the shell, one end of the fixed arc extinguishing assembly is arranged in an open mode, the moving contact is hinged to the inner wall of the shell, and one end of the moving contact extends from the open position of one end of the fixed arc extinguishing assembly to the inner side of the fixed arc extinguishing assembly. Compared with the prior art, the embodiment of the invention can form a relatively closed arc-extinguishing chamber in the rotating process of the moving contact through the matching between the fixed arc-extinguishing component and the movable arc-extinguishing component so as to cope with the arc-extinguishing treatment of the electric arcs distorted in different directions, and has the advantage of good arc-extinguishing effect.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to an arc extinguishing structure of a circuit breaker.
Background
Circuit breakers are a critical component in electrical distribution systems for protection against overload, short circuits, and negative voltages, etc. of lines and electrical utility, by which fault circuits, such as overload, short circuits, and undervoltages, etc., are cut off, i.e., broken.
When the moving contact and the fixed contact of the circuit breaker are separated, high-temperature electric arc is generated, and in order to quickly and effectively extinguish the arc, an arc extinguishing sheet (also called an arc extinguishing grid sheet) is arranged in the circuit breaker and near the moving contact and the fixed contact to cut the electric arc until the electric arc is extinguished, so that adverse effects of the electric arc on burning other parts in the circuit breaker are prevented.
Most of the existing arc-extinguishing plates are of U-shaped structures, one end of a moving contact stretches into the inner side of the arc-extinguishing plate from the opening position of one side of the arc-extinguishing plate, when the moving contact is separated from the fixed contact, one end of the moving contact rotates along the inner side of the arc-extinguishing plate, however, the twisting direction of an electric arc device pulled up by the moving contact is not fixed, sometimes an electric arc can twist towards the opening of the arc-extinguishing plate, and the opening of the arc-extinguishing plate is free from any arc-extinguishing measures, so that the arc-extinguishing effect of the electric arc is not ideal.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problem to be solved by the embodiment of the invention is to provide an arc extinguishing structure of a circuit breaker.
In order to solve the technical problems, the invention provides the following technical scheme:
An arc extinguishing structure of a circuit breaker comprises a shell, a moving contact, a fixed arc extinguishing component and a movable arc extinguishing component,
The static contact is fixedly arranged at the bottom of the inner side of the shell,
The fixed arc-extinguishing component and the movable arc-extinguishing component are arranged in the shell, one end of the fixed arc-extinguishing component is arranged in an open way,
The movable contact is hinged on the inner wall of the shell, one end of the movable contact extends from the opening at one end of the fixed arc extinguishing assembly to the inner side of the fixed arc extinguishing assembly,
When the moving contact is separated from the fixed contact and one end of the moving contact rotates upwards along the inside of the fixed arc extinguishing assembly, the movable arc extinguishing assembly is used for closing an opening at one end of the fixed arc extinguishing assembly.
As a further improvement of the invention: a supporting plate is also fixedly arranged in the shell,
The fixed arc extinguishing component comprises a plurality of first arc extinguishing pieces with U-shaped structures,
A plurality of first arc extinguishing piece fixed mounting is in backup pad one side, a plurality of first arc extinguishing piece be equal interval distribution from top to bottom in backup pad one side, a plurality of the open orientation of first arc extinguishing piece is kept away from one side of backup pad.
As a further improvement of the invention: the movable arc extinguishing component comprises a plurality of second arc extinguishing pieces and a plurality of third arc extinguishing pieces,
The second arc-extinguishing sheets and the first arc-extinguishing sheets are alternately distributed, the second arc-extinguishing sheets are arranged on one side of the opening positions of the first arc-extinguishing sheets,
The third arc-extinguishing sheets and the first arc-extinguishing sheets are alternately distributed, the third arc-extinguishing sheets are arranged on the other side of the opening positions of the first arc-extinguishing sheets,
The second arc-extinguishing sheets and the third arc-extinguishing sheets between two adjacent groups of the first arc-extinguishing sheets are mutually abutted,
The upper and lower sides of each group of the second arc-extinguishing plates are fixedly provided with second arc-extinguishing plates, the upper and lower sides of each group of the third arc-extinguishing plates are fixedly provided with first arc-extinguishing plates,
Each group of second arc-extinguishing pieces and each group of third arc-extinguishing pieces are connected with one group of first arc-extinguishing pieces through first elastic pieces.
As a further improvement of the invention: a plurality of first arc extinguishing plates are respectively provided with a supporting shaft in a penetrating way at two corner positions far away from one end of the supporting plate,
One end of each of the second arc extinguishing plates correspondingly extends between the first arc extinguishing plates and is in rotary fit with one group of the supporting shafts,
One end of each third arc-extinguishing piece extends to the position between the corresponding first arc-extinguishing pieces and is in running fit with the other group of the supporting shafts.
As a still further improvement of the invention: the shell is internally provided with an air-blowing arc-extinguishing assembly, and the air-blowing arc-extinguishing assembly is used for blowing air to the inner sides of the first arc-extinguishing plates when the moving contact is far away from the fixed contact and rotates upwards along the inner sides of the first arc-extinguishing plates.
As a still further improvement of the invention: the support plate is hollow, one side of the support plate facing the first arc extinguishing plates is provided with a plurality of air holes,
The air-blowing arc extinguishing component comprises an air pipe, an air cylinder and a piston rod,
One end of the air delivery pipe is fixedly connected with the inner wall of the shell, the other end of the air delivery pipe is communicated with the inner cavity of the supporting plate, the air storage cylinder is fixedly arranged on one side of the air delivery pipe and is communicated with the inner cavity of the air delivery pipe,
The piston rod one end pass through the slide pin with movable contact upper portion butt links to each other, and the piston rod other end extends to the gas receiver is inside and with the flexible cooperation of gas receiver, the gas receiver is inside to be provided with be used for right the piston rod provides the second elastic component of elastic support.
As a still further improvement of the invention: the utility model discloses a movable contact, including casing, fixed seat, movable contact, handle, fixed seat, locating shaft, movable contact, handle, the notch that can supply the movable contact to pass is offered to the casing lateral wall, the shells inner wall is located notch one side is still fixed the setting fixing base, fixing base one side fixed mounting has the locating shaft, the locating shaft runs through the movable contact and with movable contact normal running fit, the movable contact is located the outside one end of casing is connected with the handle.
Compared with the prior art, the invention has the beneficial effects that:
In the embodiment of the invention, when the moving contact is separated from the fixed contact and rotates upwards along the inner side of the fixed arc extinguishing assembly, an electric arc is generated between the moving contact and the fixed contact, and the electric arc is segmented through the fixed arc extinguishing assembly, so that the electric arc is extinguished; above-mentioned in moving contact rotation process, movable arc extinguishing component can carry out the closure to the uncovered of fixed arc extinguishing component one end and handle for can constitute relative confined explosion chamber between fixed arc extinguishing component and the movable arc extinguishing component, and then go on extinguishing the processing to the electric arc of different direction distortion, compare in prior art, through the cooperation between fixed arc extinguishing component and the movable arc extinguishing component, can make can form comparatively confined explosion chamber at the moving contact rotation in-process, with the arc extinguishing processing of the electric arc of coping with different direction distortion, have the effectual advantage of arc extinguishing.
Drawings
Fig. 1 is a schematic diagram of an arc extinguishing structure of a circuit breaker;
fig. 2 is a schematic diagram of a circuit breaker arc extinguishing structure;
FIG. 3 is an enlarged schematic view of area A of FIG. 1;
FIG. 4 is an enlarged schematic view of area B of FIG. 2;
In the figure: 10-shell, 101-notch, 102-locating shaft, 103-fixing seat, 20-moving contact, 30-static contact, 40-supporting plate, 401-air hole, 50-fixed arc extinguishing component, 60-movable arc extinguishing component, 601-second arc extinguishing piece, 602-first elastic piece, 603-third arc extinguishing piece, 604-supporting shaft, 605-second arc piece, 606-first arc piece, 70-air blowing arc extinguishing component, 701-air pipe, 702-air storage cylinder, 703-piston rod and 704-sliding pin.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the specific embodiments.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Referring to fig. 1 and 2, the present embodiment provides an arc extinguishing structure of a circuit breaker, including a housing 10, a moving contact 20, a fixed contact 30, a fixed arc extinguishing assembly 50 and a movable arc extinguishing assembly 60, wherein the fixed contact 30 is fixedly installed at the bottom of the inner side of the housing 10, the fixed arc extinguishing assembly 50 and the movable arc extinguishing assembly 60 are disposed inside the housing 10, one end of the fixed arc extinguishing assembly 50 is open, the moving contact 20 is hinged on the inner wall of the housing 10, one end of the moving contact 20 extends from the open of one end of the fixed arc extinguishing assembly 50 to the inner side of the fixed arc extinguishing assembly 50, and when the moving contact 20 is separated from the fixed contact 30 and one end of the moving contact 20 rotates upwards along the inner side of the fixed arc extinguishing assembly 50, the movable arc extinguishing assembly 60 is used for closing the open of one end of the fixed arc extinguishing assembly 50.
When the moving contact 20 and the fixed contact 30 are separated and rotate upwards along the inner side of the fixed arc extinguishing assembly 50, an arc is generated between the moving contact 20 and the fixed contact 30, and the arc is divided by the fixed arc extinguishing assembly 50, so that the arc is extinguished; the movable arc extinguishing assembly 60 can close the opening at one end of the fixed arc extinguishing assembly 50 during the rotation of the movable contact 20, so that a relatively closed arc extinguishing chamber can be formed between the fixed arc extinguishing assembly 50 and the movable arc extinguishing assembly 60, and then the arc twisted in different directions is extinguished.
Referring to fig. 1, in an embodiment, the housing 10 is further fixedly provided with a support plate 40, the fixed arc extinguishing assembly 50 includes a plurality of first arc extinguishing plates having a U-shaped structure, the plurality of first arc extinguishing plates are fixedly mounted on one side of the support plate 40, the plurality of first arc extinguishing plates are distributed at equal intervals up and down on one side of the support plate 40, and the openings of the plurality of first arc extinguishing plates face to one side far away from the support plate 40.
When the moving contact 20 is far away from the fixed contact 30 and rotates upwards along the inner sides of the first arc extinguishing pieces, the electric arc pulled out between the moving contact 20 and the fixed contact 30 can be divided into a plurality of sections of short arcs by the first arc extinguishing pieces, and when the current flows through 0, the short arcs can be extinguished.
Referring to fig. 1 and 3, in one embodiment, the movable arc extinguishing assembly 60 includes a plurality of second arc extinguishing plates 601 and a plurality of third arc extinguishing plates 603, a plurality of second arc extinguishing plates 601 and a plurality of first arc extinguishing plates are alternately distributed, a plurality of second arc extinguishing plates 601 are disposed at a plurality of sides of the open positions of the first arc extinguishing plates, a plurality of third arc extinguishing plates 603 and a plurality of first arc extinguishing plates are alternately distributed, a plurality of third arc extinguishing plates 603 are disposed at a plurality of sides of the open positions of the first arc extinguishing plates, the second arc extinguishing plates 601 between two adjacent groups of first arc extinguishing plates are mutually abutted with the third arc extinguishing plates 603, a second arc extinguishing plate 606 is fixedly disposed on the upper side and the lower side of each group of second arc extinguishing plates 601, and one side of each group of third arc extinguishing plates 603 is fixedly disposed with a first arc extinguishing plates 605, and the other side of each group of third arc extinguishing plates 603 is connected with one group of first arc extinguishing plates through a first elastic member 602.
When moving contact 20 keeps away from stationary contact 30 and upwards rotates along a plurality of first arc-extinguishing piece inboardly, moving contact 20 can stretch into between second arc-extinguishing piece 606 and the first arc-extinguishing piece 605 that are located second arc-extinguishing piece 601 and third arc-extinguishing piece 603 below, and then promote the second arc-extinguishing piece 601 and the rotation of third arc-extinguishing piece 603 of looks butt for second arc-extinguishing piece 601 and third arc-extinguishing piece 603 keep away from each other, can drive the compression of corresponding first elastic component 602 respectively when second arc-extinguishing piece 601 and third arc-extinguishing piece 603 keep away from each other, until moving contact 20 passes the back between second arc-extinguishing piece 601 and the third arc-extinguishing piece 603, first elastic component 602 promotes second arc-extinguishing piece 601 and third arc-extinguishing piece 603 reverse rotation, make second arc-extinguishing piece 601 and third arc-extinguishing piece 603 re-butt, so, after moving contact 20 upwards rotates certain height, a plurality of second arc-extinguishing piece 601 and third arc-extinguishing piece 603 can be in the opening of a plurality of first arc-extinguishing pieces, thereby the opening of moving contact 20 is closed, and the effect of vice versa is cut off, and the electric arc can be cut off to a plurality of side.
Referring to fig. 1, in one embodiment, two corner positions of the ends of the first arc extinguishing pieces far away from the supporting plate 40 are respectively provided with a supporting shaft 604, one ends of the second arc extinguishing pieces 601 correspondingly extend between the first arc extinguishing pieces and are in running fit with one group of the supporting shafts 604, and one ends of the third arc extinguishing pieces 603 correspondingly extend between the first arc extinguishing pieces and are in running fit with the other group of the supporting shafts 604.
The two groups of support shafts 604 are used for respectively providing rotary support for the second arc extinguishing plates 601 and the third arc extinguishing plates 603, so that when the moving contact 20 stretches into the space between the first arc extinguishing plates 606 and the second arc extinguishing plates 605, the corresponding second arc extinguishing plates 601 and third arc extinguishing plates 603 can be pushed to rotate around the respective corresponding support shafts 604, the second arc extinguishing plates 601 and the third arc extinguishing plates 603 are further away from each other, the moving contact 20 can smoothly pass through the space between the second arc extinguishing plates 601 and the third arc extinguishing plates 603, after the moving contact 20 passes through the space between the second arc extinguishing plates 601 and the third arc extinguishing plates 603, the second arc extinguishing plates 601 and the third arc extinguishing plates 603 can be driven to rotate reversely under the support action of the first elastic piece 602, and the second arc extinguishing plates 601 and the third arc extinguishing plates 603 can be pushed against each other again, so that the opening of the first arc extinguishing plates can be closed at the lower position of the moving contact 20.
Referring to fig. 2, in an embodiment, an air-blowing arc extinguishing assembly 70 is further disposed inside the housing 10, and when the moving contact 20 is far away from the fixed contact 30 and rotates upward along the inner sides of the first arc extinguishing pieces, the air-blowing arc extinguishing assembly 70 is configured to blow air to the inner sides of the first arc extinguishing pieces so as to blow out the short arcs divided by the first arc extinguishing pieces.
Referring to fig. 1, 2 and 4, in one embodiment, the support plate 40 is hollow, one side of the support plate 40 facing the first arc extinguishing plates is provided with a plurality of air holes 401, the air blast arc extinguishing assembly 70 includes an air pipe 701, an air cylinder 702 and a piston rod 703, one end of the air pipe 701 is fixedly connected with the inner wall of the housing 10, the other end of the air cylinder 702 is communicated with the inner cavity of the support plate 40, the air cylinder 702 is fixedly arranged on one side of the air pipe 701 and is communicated with the inner cavity of the air pipe 701, one end of the piston rod 703 is connected with the upper portion of the moving contact 20 in an abutting manner through a sliding pin 704, the other end of the piston rod 703 extends into the air cylinder 702 and is in telescopic fit with the air cylinder 702, and a second elastic member (not shown in the figure) for providing elastic support for the piston rod 703 is arranged in the air cylinder 702.
When the moving contact 20 is far away from the fixed contact 30 and rotates upwards along the inner sides of the first arc extinguishing plates, the moving contact 20 can push the sliding pin 704 to drive the piston rod 703 to move towards the inside of the air storage cylinder 702, so that air in the air storage cylinder 702 is pumped into the support plate 40 through the air pipe 701, and the air is output to the inner sides of the first arc extinguishing plates through the air holes 401 at one side of the support plate 40, so that a plurality of short arcs segmented by the first arc extinguishing plates are blown out, the arc extinguishing time is further shortened, and the arc extinguishing efficiency is improved; when a plurality of short arcs are blown out, the air entering the inner sides of a plurality of first arc extinguishing plates through the air holes 401 can also rapidly cool down the plurality of first arc extinguishing plates.
In one embodiment, the first elastic member 602 and the second elastic member may be springs or metal elastic sheets, which is not limited herein.
Referring to fig. 2 and 4, in one embodiment, a slot 101 through which the moving contact 20 passes is formed in a side wall of the housing 10, a fixing seat 103 is fixedly disposed on a side of the slot 101 on an inner wall of the housing 10, a positioning shaft 102 is fixedly mounted on a side of the fixing seat 103, the positioning shaft 102 penetrates through the moving contact 20 and is in running fit with the moving contact 20 so as to provide a rotation support for the moving contact 20, and a handle (not shown) is connected to an end of the moving contact 20 located outside the housing 10.
In the embodiment of the invention, when the moving contact 20 and the fixed contact 30 are separated and rotate upwards along the inner side of the fixed arc extinguishing assembly 50, an arc is generated between the moving contact 20 and the fixed contact 30, and the arc is split by the fixed arc extinguishing assembly 50, so that the arc is extinguished; above-mentioned in moving contact 20 rotation in-process, movable arc extinguishing component 60 can carry out the closure processing to the uncovered of fixed arc extinguishing component 50 one end for can constitute relatively confined explosion chamber between fixed arc extinguishing component 50 and the movable arc extinguishing component 60, and then go on extinguishing the processing to the electric arc of different direction distortion, compare in prior art, through the cooperation between fixed arc extinguishing component 50 and the movable arc extinguishing component 60, can make at moving contact 20 rotation in-process can form comparatively confined explosion chamber, with the arc extinguishing processing of the electric arc of coping with the different direction distortion, have the effectual advantage of arc extinguishing.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. An arc extinguishing structure of a circuit breaker is characterized by comprising a shell, a moving contact, a fixed arc extinguishing component and a movable arc extinguishing component,
The static contact is fixedly arranged at the bottom of the inner side of the shell,
The fixed arc-extinguishing component and the movable arc-extinguishing component are arranged in the shell, one end of the fixed arc-extinguishing component is arranged in an open way,
The movable contact is hinged on the inner wall of the shell, one end of the movable contact extends from the opening at one end of the fixed arc extinguishing assembly to the inner side of the fixed arc extinguishing assembly,
When the moving contact is separated from the fixed contact and one end of the moving contact rotates upwards along the inside of the fixed arc extinguishing assembly, the movable arc extinguishing assembly is used for closing an opening at one end of the fixed arc extinguishing assembly.
2. The arc extinguishing structure of the circuit breaker according to claim 1, wherein the housing is further fixedly provided with a supporting plate,
The fixed arc extinguishing component comprises a plurality of first arc extinguishing pieces with U-shaped structures,
A plurality of first arc extinguishing piece fixed mounting is in backup pad one side, a plurality of first arc extinguishing piece be equal interval distribution from top to bottom in backup pad one side, a plurality of the open orientation of first arc extinguishing piece is kept away from one side of backup pad.
3. The circuit breaker arc extinguishing structure of claim 2, wherein the movable arc extinguishing assembly comprises a plurality of second arc extinguishing pieces and a plurality of third arc extinguishing pieces,
The second arc-extinguishing sheets and the first arc-extinguishing sheets are alternately distributed, the second arc-extinguishing sheets are arranged on one side of the opening positions of the first arc-extinguishing sheets,
The third arc-extinguishing sheets and the first arc-extinguishing sheets are alternately distributed, the third arc-extinguishing sheets are arranged on the other side of the opening positions of the first arc-extinguishing sheets,
The second arc-extinguishing sheets and the third arc-extinguishing sheets between two adjacent groups of the first arc-extinguishing sheets are mutually abutted,
The upper and lower sides of each group of the second arc-extinguishing plates are fixedly provided with second arc-extinguishing plates, the upper and lower sides of each group of the third arc-extinguishing plates are fixedly provided with first arc-extinguishing plates,
Each group of second arc-extinguishing pieces and each group of third arc-extinguishing pieces are connected with one group of first arc-extinguishing pieces through first elastic pieces.
4. The arc extinguishing structure of the circuit breaker according to claim 3, wherein the two corner positions of the plurality of first arc extinguishing pieces far away from one end of the supporting plate are respectively provided with a supporting shaft in a penetrating way,
One end of each of the second arc extinguishing plates correspondingly extends between the first arc extinguishing plates and is in rotary fit with one group of the supporting shafts,
One end of each third arc-extinguishing piece extends to the position between the corresponding first arc-extinguishing pieces and is in running fit with the other group of the supporting shafts.
5. The arc extinguishing structure of a circuit breaker according to claim 2, wherein an air-blowing arc extinguishing assembly is further arranged in the shell, and the air-blowing arc extinguishing assembly is used for blowing air to the inner sides of the first arc extinguishing pieces when the moving contact is far away from the fixed contact and rotates upwards along the inner sides of the first arc extinguishing pieces.
6. The arc extinguishing structure of the circuit breaker according to claim 5, wherein the supporting plate is hollow, a plurality of air holes are formed on one side of the supporting plate facing the plurality of first arc extinguishing plates,
The air-blowing arc extinguishing component comprises an air pipe, an air cylinder and a piston rod,
One end of the air delivery pipe is fixedly connected with the inner wall of the shell, the other end of the air delivery pipe is communicated with the inner cavity of the supporting plate, the air storage cylinder is fixedly arranged on one side of the air delivery pipe and is communicated with the inner cavity of the air delivery pipe,
The piston rod one end pass through the slide pin with movable contact upper portion butt links to each other, and the piston rod other end extends to the gas receiver is inside and with the flexible cooperation of gas receiver, the gas receiver is inside to be provided with be used for right the piston rod provides the second elastic component of elastic support.
7. The arc extinguishing structure of a circuit breaker according to claim 1, wherein a notch through which the moving contact passes is formed in the side wall of the housing, a fixing seat is fixedly arranged on one side of the notch on the inner wall of the housing, a positioning shaft is fixedly arranged on one side of the fixing seat, the positioning shaft penetrates through the moving contact and is in running fit with the moving contact, and a handle is connected to one end of the moving contact, which is located outside the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202410231562.0A CN117810045B (en) | 2024-03-01 | 2024-03-01 | Arc extinguishing structure of circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410231562.0A CN117810045B (en) | 2024-03-01 | 2024-03-01 | Arc extinguishing structure of circuit breaker |
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| CN117810045A CN117810045A (en) | 2024-04-02 |
| CN117810045B true CN117810045B (en) | 2024-04-30 |
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| WO2016115686A1 (en) * | 2015-01-21 | 2016-07-28 | 赵建平 | Arc extinguish chamber of molded case circuit breaker |
| CN106252178A (en) * | 2016-09-23 | 2016-12-21 | 德力西电气有限公司 | A kind of arc-control device for breaker of plastic casing and the chopper containing this device |
| CN111834176A (en) * | 2020-08-07 | 2020-10-27 | 上海瑞忒尔电气技术有限公司 | Arc striking plate of arc extinguishing system |
| CN214542008U (en) * | 2021-03-23 | 2021-10-29 | 霍立克电气有限公司 | Double-break vacuum circuit breaker pole |
| CN113808891A (en) * | 2021-10-18 | 2021-12-17 | 北京图力普联科技有限公司 | Self-excitation air-blast arc extinguisher |
| WO2024007845A1 (en) * | 2022-07-04 | 2024-01-11 | 上海正泰智能科技有限公司 | Arc extinguishing mechanism |
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