CN220691952U - Contact arc extinguishing system of circuit breaker - Google Patents
Contact arc extinguishing system of circuit breaker Download PDFInfo
- Publication number
- CN220691952U CN220691952U CN202322236917.9U CN202322236917U CN220691952U CN 220691952 U CN220691952 U CN 220691952U CN 202322236917 U CN202322236917 U CN 202322236917U CN 220691952 U CN220691952 U CN 220691952U
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- CN
- China
- Prior art keywords
- arc
- arc extinguishing
- circuit breaker
- face
- chamber
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- 230000003068 static effect Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 27
- 238000004880 explosion Methods 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 12
- 238000010791 quenching Methods 0.000 claims 2
- 230000000171 quenching effect Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to the technical field of arc extinguishing systems, in particular to a circuit breaker contact arc extinguishing system which comprises an arc extinguishing chamber, wherein a static contact is arranged on the front end surface of the arc extinguishing chamber, arc extinguishing chambers are connected to the left side and the right side of the arc extinguishing chamber, arc extinguishing grid plates which are uniformly distributed are arranged in the arc extinguishing chamber, T-shaped blocks are arranged on the upper end surface of the arc extinguishing chamber, and arc baffles are fixedly arranged on the front end surface of the T-shaped blocks.
Description
Technical Field
The utility model relates to the technical field of arc extinguishing systems, in particular to a circuit breaker contact arc extinguishing system.
Background
The arc extinguishing system is used in switching equipment and is used for extinguishing arc produced during the opening of contact to protect the contact and other components in the switching equipment from damage.
In order to raise arc voltage, an insulating baffle structure is generally adopted in the contact arc extinguishing system of the circuit breaker in the prior art, for example, the contact arc extinguishing system of the circuit breaker disclosed in patent application number CN202222358385.1 is provided with an insulating baffle between the side of the first arc extinguishing grid plate group and the shell wall, during breaking, the direct absorption of arc energy is increased, meanwhile, the arc can be cooled, and if the insulating baffle is made of a material capable of generating gas when being heated, the gas can be released at high temperature, so that the flow speed and the airflow flux of high-temperature plasma to an air outlet are improved, the arc energy is dissipated more, the effect that the arc is cooled is improved, and the obvious improvement of the arc voltage is finally presented, but the adoption of the insulating baffle is still to be improved.
In the prior art, because the gaps of the internal structure of most circuit breakers are too large, the tightness of the circuit breakers is poor, so that the electric arcs generated by the circuit breakers cannot be completely extinguished, and the circuit breakers are easy to overflow the arc extinguishing chamber to be influenced, so that potential safety hazards exist, and the circuit breaker contact arc extinguishing system is inconvenient to use.
Disclosure of Invention
The utility model aims to provide a circuit breaker contact arc extinguishing system which is used for solving the problems in the background technology.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a circuit breaker contact arc extinguishing system, includes the explosion chamber, the static contact is installed to the preceding terminal surface of explosion chamber, and the left and right sides of explosion chamber all is connected with the explosion chamber, and the inside of explosion chamber is provided with evenly distributed's arc extinguishing bars piece, and the up end of explosion chamber is provided with T type piece, and the preceding terminal surface fixed mounting of T type piece has the flash barrier, and the up end of flash barrier is connected with the baffle, and the open slot that link up has been seted up to the front and back both sides of flash barrier, and the back terminal surface slip joint of explosion chamber has two spacing inserts.
Preferably, the left end face inside the arc-shaped baffle is slidably connected with a first telescopic sealing plate, the right end face inside the arc-shaped baffle is slidably connected with a second telescopic sealing plate, and three connecting springs are connected between the first telescopic sealing plate and the second telescopic sealing plate.
Preferably, one side of the three connecting springs is connected to the left end face of the first telescopic sealing plate, and the other side of the connecting springs is connected to the right end face of the second telescopic sealing plate.
Preferably, the rear end face of the arc-shaped baffle plate is rotationally connected with two rotating shafts, and the outer sides of the two rotating shafts are connected with a long supporting plate and a short supporting plate.
Preferably, one side of the limiting plug block penetrates through the arc-extinguishing chamber and extends to the inside of the arc-extinguishing chamber, and the arc-isolating plate is positioned at the rear of the arc-extinguishing grid plate.
Preferably, the upper end face of the arc-extinguishing chamber is provided with a mounting groove, the mounting groove is matched with the T-shaped block, and the lower end face of the T-shaped block is in sliding clamping connection with the upper end face of the arc-extinguishing chamber through the mounting groove.
The utility model has the beneficial effects that:
1. the utility model can form a space with certain tightness by utilizing the arrangement of the arc-extinguishing chamber, the fixed contact and the arc-extinguishing chamber, thus ensuring the air pressure in the arc-extinguishing chamber and ensuring the trend of the air flow of the arc-extinguishing chamber to be better, improving the arc-extinguishing speed of the contact of the circuit breaker, and simultaneously, the arc-isolating plate can also block the arc energy so as to ensure the service life of the circuit breaker to be longer;
2. according to the utility model, the size of the opening groove of the baffle plate can be adjusted by flexibly adjusting the distance between the two telescopic sealing plates, so that the sealing effect in the circuit breaker can be further improved, and the aim of rapidly extinguishing the arc can be fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort;
FIG. 1 is a schematic view of the overall structure of the present utility model;
fig. 2 is a schematic diagram of the installation of the arc chute and T-block of fig. 1 of the present utility model;
FIG. 3 is a schematic view of the arc plate and barrier plate of FIG. 1 according to the present utility model;
FIG. 4 is a schematic view illustrating the installation of the first and second retractable sealing plates and the connecting springs in FIG. 1;
reference numerals in the drawings are as follows:
1. an arc extinguishing cover; 2. a stationary contact; 3. an arc extinguishing chamber; 4. arc extinguishing grid plates; 5. a T-shaped block; 6. arc-shield plate; 7. a baffle plate; 8. an open slot; 9. limiting plug blocks; 10. a first telescopic sealing plate; 11. a second telescoping seal plate; 12. a connecting spring; 13. a rotation shaft; 14. a long support plate; 15. a short support plate; 16. and a mounting groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a circuit breaker contact arc extinguishing system, including arc-extinguishing chamber 1, static contact 2 is installed to the preceding terminal surface of arc-extinguishing chamber 1, the left and right sides of arc-extinguishing chamber 1 all is connected with explosion chamber 3, the inside of explosion chamber 3 is provided with evenly distributed's arc-extinguishing bars piece 4, the up end of arc-extinguishing chamber 1 is provided with T type piece 5, the preceding terminal surface fixed mounting of T type piece 5 has the arc barrier 6, the up end of arc barrier 6 is connected with baffle 7, through the setting of baffle 7, utilize the confined space that arc-extinguishing chamber 1, static contact 2 and explosion chamber 3 can form, so that more effectual compression and cooling arc, improve the arc voltage, the opening groove 8 that link up has been seted up to the front and back both sides of arc barrier 6, the rear end sliding joint of arc-extinguishing chamber 1 has two spacing inserts 9.
The left end face inside the arc-shaped baffle 6 is slidably connected with a first telescopic sealing plate 10, the right end face inside the arc-shaped baffle 6 is slidably connected with a second telescopic sealing plate 11, the two telescopic sealing plates can be telescopically adjusted to adjust the size of an opening slot 8 at the arc-shaped baffle 6 through the installation and use of the first telescopic sealing plate 10 and the second telescopic sealing plate 11, the use is convenient, and three connecting springs 12 are connected between the first telescopic sealing plate 10 and the second telescopic sealing plate 11.
One side of the three connecting springs 12 is connected to the left end face of the first telescopic sealing plate 10, and the other side of the connecting springs 12 is connected to the right end face of the second telescopic sealing plate 11.
The rear end face of the arc-shield 6 is rotationally connected with two rotating shafts 13, the outer sides of the two rotating shafts 13 are respectively connected with a long supporting plate 14 and a short supporting plate 15, the two telescopic sealing plates can be extruded by the long supporting plate 14 to reduce the size of the open slot 8, and the two telescopic sealing plates can be extruded by the short supporting plate 15 to enlarge the open slot 8 so as to adapt to different scenes.
One side of the limiting plug 9 penetrates through the arc-extinguishing chamber 1 and extends to the inside of the arc-extinguishing chamber 1, and the arc-isolating plate 6 is positioned behind the arc-extinguishing grid plate 4.
The upper end face of the arc-extinguishing chamber 1 is provided with a mounting groove 16, the mounting groove 16 is matched with the T-shaped block 5, and the lower end face of the T-shaped block 5 is in sliding clamping connection with the upper end face of the arc-extinguishing chamber 1 through the mounting groove 16.
The utility model provides a circuit breaker contact arc extinguishing system, which has the following working principle:
the space with certain tightness can be formed by utilizing the arrangement of the arc-extinguishing chamber 1, the fixed contact 2 and the arc-extinguishing chamber 3, so that the air pressure in the arc-extinguishing chamber 3 and the trend of the air flow of the arc-extinguishing chamber 3 are better, the arc-extinguishing speed of the circuit breaker contact is improved, the circuit breaker can be safely used, then the T-shaped block 5 is clamped above the arc-extinguishing chamber 1, the T-shaped block 5 is limited by utilizing the two limiting inserts 9, so that the T-shaped block 5 drives the arc-isolating plate 6 and the baffle plate 7 to be arranged behind the arc-extinguishing grid plate 4, and the arc-isolating plate 6 can block the arc energy, so that the service life of the circuit breaker is longer;
through rotating rotation axis 13, rotation axis 13 can drive long backup pad 14 and short backup pad 15 in proper order and rotate, and long backup pad 14 and short backup pad 15 all can extrude the first flexible closing plate 10 and the second flexible closing plate 11 of installing coupling spring 12 respectively like this, can nimble regulation two flexible closing plate's interval and adjust the open slot 8 size of baffle 7 like this to can further promote the inside sealed effect of circuit breaker, in order to reach the purpose of extinguishing the electric arc fast.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (6)
1. The utility model provides a circuit breaker contact arc extinguishing system, includes explosion chamber (1), its characterized in that: the static contact (2) is installed to the preceding terminal surface of explosion chamber (1), the left and right sides of explosion chamber (1) all is connected with explosion chamber (3), the inside of explosion chamber (3) is provided with evenly distributed's arc extinguishing bars piece (4), the up end of explosion chamber (1) is provided with T type piece (5), the preceding terminal surface fixed mounting of T type piece (5) has arc barrier (6), the up end of arc barrier (6) is connected with baffle (7), open slot (8) that link up have been seted up to the front and back both sides of arc barrier (6), the rear end sliding joint of explosion chamber (1) has two spacing inserts (9).
2. The circuit breaker contact arc extinguishing system according to claim 1, wherein a left end face inside the arc-shield plate (6) is slidably connected with a first telescopic sealing plate (10), a right end face inside the arc-shield plate (6) is slidably connected with a second telescopic sealing plate (11), and three connecting springs (12) are connected between the first telescopic sealing plate (10) and the second telescopic sealing plate (11).
3. A circuit breaker contact quenching system as claimed in claim 2, characterized in that one side of the three connecting springs (12) is connected to the left end face of the first telescopic sealing plate (10), and the other side of the connecting springs (12) is connected to the right end face of the second telescopic sealing plate (11).
4. The circuit breaker contact arc extinguishing system according to claim 1, wherein the rear end face of the arc barrier (6) is rotatably connected with two rotating shafts (13), and the outer sides of the two rotating shafts (13) are respectively connected with a long supporting plate (14) and a short supporting plate (15).
5. A circuit breaker contact quenching system according to claim 1, characterized in that one side of the limit insert (9) extends through the arc chute (1) and into the interior of the arc chute (1), the arc barrier (6) being located behind the arc chute sheet (4).
6. The circuit breaker contact arc extinguishing system according to claim 1, wherein the upper end face of the arc extinguishing chamber (1) is provided with a mounting groove (16), the mounting groove (16) is matched with the T-shaped block (5), and the lower end face of the T-shaped block (5) is in sliding clamping connection with the upper end face of the arc extinguishing chamber (1) through the mounting groove (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322236917.9U CN220691952U (en) | 2023-08-18 | 2023-08-18 | Contact arc extinguishing system of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322236917.9U CN220691952U (en) | 2023-08-18 | 2023-08-18 | Contact arc extinguishing system of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220691952U true CN220691952U (en) | 2024-03-29 |
Family
ID=90404606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322236917.9U Active CN220691952U (en) | 2023-08-18 | 2023-08-18 | Contact arc extinguishing system of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220691952U (en) |
-
2023
- 2023-08-18 CN CN202322236917.9U patent/CN220691952U/en active Active
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