CN220873513U - Explosion chamber assembly structure of circuit breaker or isolator - Google Patents
Explosion chamber assembly structure of circuit breaker or isolator Download PDFInfo
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- CN220873513U CN220873513U CN202322656938.6U CN202322656938U CN220873513U CN 220873513 U CN220873513 U CN 220873513U CN 202322656938 U CN202322656938 U CN 202322656938U CN 220873513 U CN220873513 U CN 220873513U
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- circuit breaker
- assembly structure
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- plug
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- 238000004880 explosion Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to the technical field of low-voltage electrical equipment, and discloses an arc extinguish chamber assembly structure of a circuit breaker or an isolating switch. The arc extinguishing chamber assembly structure has the advantages of good practicability, simple integral structure and convenience in popularization and application.
Description
Technical Field
The utility model belongs to the technical field of low-voltage electrical equipment, and particularly relates to an arc-extinguishing chamber assembly structure of a circuit breaker or an isolating switch.
Background
The circuit breaker and the isolating switch are the most important power equipment in a power distribution system and a new energy system, and along with the continuous improvement of system voltage, the performance requirements on the circuit protecting switch are also higher and higher, and miniaturization, high performance, modularization and high reliability are the main development directions of the circuit breaker and the isolating switch at present.
With the development of electric power, the application voltage of a power system is continuously increased, the alternating current is high to AC1500V, the direct current voltage is also increased to DC2500V, meanwhile, as the phenomenon that the direct current system has no natural zero crossing relative to the alternating current system current, the electric arc cannot be extinguished in the moment of zero crossing by utilizing the alternating current like alternating current, and the electric arc can only be rapidly elongated and cooled to enable the electric arc voltage to exceed the power supply voltage, so that the number of the grid sheets of the arc extinguishing chamber is continuously increased, the grid sheets of the arc extinguishing device for the existing circuit breaker are riveted on the side plate of the arc extinguishing device by adopting a riveting process, or are inserted on the side plate of the arc extinguishing chamber in an inserting mode, and the arc extinguishing chamber is inconvenient to assemble when the number of the arc extinguishing grid sheets is large, and is time-consuming and labor-consuming.
Disclosure of utility model
The utility model provides an arc-extinguishing chamber assembly structure of a circuit breaker or an isolating switch, which solves the technical problem that the efficiency of the existing arc-extinguishing chamber is low due to more grid plates in a direct-current high-voltage system by means of an assembly mode of grafting and threaded connection.
The utility model can be realized by the following technical scheme:
The utility model provides an explosion chamber assembly structure of circuit breaker or isolator, includes bars piece group, bars piece group is including a plurality of bars pieces of even interval alignment, and its left and right sides is pegged graft with the curb plate that corresponds respectively and is assembled together, two the top of curb plate is jointly cartridge to the notch inside of shroud bottom, and through threaded connection.
Further, L-shaped notches are formed in two sides of the tops of the grid sheets in the middle of the grid sheet group, square notches are formed by the L-shaped notches and the side plates on the corresponding sides, plug-ins matched with the square notches are arranged in the square notches, and bolts penetrate through screw holes in the side walls of the cover cap, the side plates and the corresponding plug-ins to be matched with the square notches, so that the fixation of the three pieces is completed.
Further, a bump is arranged on one surface of each insert, which is contacted with the side plate, and a U-shaped groove matched with each bump is arranged at the position of each bump corresponding to the side plate so as to limit the front and back positions of the inserts.
Further, the insert and the cover adopt an integrated structure.
Further, a plurality of square protrusions extending outwards are arranged on the left side and the right side of each grid sheet, and slotted holes matched with the square protrusions are formed in corresponding positions of each side plate.
The beneficial technical effects of the utility model are as follows:
1. the arc-extinguishing chamber structure integrally adopts an assembly mode of matching grafting and threaded connection, and the arc-extinguishing grid sheets are firmly fixed on the arc-extinguishing chamber in a self-locking mode, so that the riveting step is omitted, and the problem of low assembly efficiency of the arc-extinguishing chamber due to the fact that the number of the grid sheets is large under direct-current high voltage is solved.
2. By means of the additionally-arranged plug-in, the cover cap and the side plates can be stably fixed together by acting as a locking function, so that the two side plates can firmly clamp grid sheets therein without riveting, the assembly efficiency is improved, and the production cost is reduced.
3. The arc extinguishing chamber assembly structure has the advantages of good practicability, simple integral structure and convenience in popularization and application.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of the whole cross-sectional structure of the present utility model;
FIG. 3 is a schematic view of the configuration of the insert and square recess of the present utility model mated;
Wherein, 1-grid piece, 2-curb plate, 21-U-shaped groove, 3-shroud, 4-plug-in components, 41-lug.
Detailed Description
The following detailed description of the utility model refers to the accompanying drawings and preferred embodiments.
As shown in fig. 1 to 3, the present utility model proposes an arc extinguishing chamber assembling structure of a circuit breaker or a disconnector, comprising a grid plate group comprising a plurality of grid plates 1 uniformly spaced in a row, the left and right sides of which are respectively inserted and assembled with respective corresponding side plates 2, the top parts of the two side plates 2 are jointly inserted into a recess at the bottom of a cover 3 and connected by threads. Like this, wholly adopt grafting + threaded connection matched with assembly methods, can reduce the outside installation space of each component as far as possible, provide as much space for inside grid 1 installation, for promoting the arc extinguishing ability preparation to satisfy current electric power system and to the manufacturing demand of explosion chamber small volume, also can improve the efficiency of assembly and maintenance simultaneously, reduction in production and maintenance cost.
The method comprises the following steps:
In order to provide more space for installing the grid plates 1, the occupied space of the shell in the arc extinguishing chamber needs to be reduced as much as possible, so that the assembly of each component part is realized by designing an inserting structure, firstly, each grid plate is uniformly inserted between two side plates 2 at intervals in an inserting mode, a plurality of square protrusions extending outwards, such as two square protrusions, are arranged on the left side and the right side of each grid plate 1, slotted holes matched with the square protrusions are arranged at corresponding positions of each side plate 2, the inserting is realized by matching the square protrusions with the slotted holes, the positions of the grid plates 1 relative to the side plates 2 in the left-right direction and the up-down direction can be limited, and the structure is simple;
Then, a cover cap 3 is assembled, and considering that the total mass of a grid sheet group formed by arranging a plurality of grid sheets 1 is larger, and the thickness of a side plate 2 is smaller and is not suitable for being used as a locking threaded hole, therefore, an insert is additionally arranged between the side plate 2 and the grid sheet group, L-shaped notches are designed on two sides of the tops of the grid sheets 1 positioned in the middle of the grid sheet group and can form a square notch with the side plate 2 on the corresponding side, the inner cavities of the two square notches are matched with the insert 4, and then the two square notches penetrate through the side wall of the cover cap and the side plate and the threaded hole on the corresponding insert by means of bolts to be matched, so that the three are fixed;
Considering the convenience of assembly, only the width of the square notch is matched with the width of the insert 4 to limit the position of the insert 4 in the left-right direction, meanwhile, the convex blocks 41 are arranged on the surface, which is contacted with the side plates 2, of each insert 4, the U-shaped grooves 21 matched with the convex blocks are arranged on the positions, which correspond to the convex blocks, of each side plate 2, the convex blocks 41 are placed in the U-shaped grooves 21, the insert 4 is pressed from top to bottom, the insert 4 can be assembled in the square notch, the front and back positions of the insert 4 can be limited by the matching of the convex blocks 41 and the U-shaped grooves 21, the cover cap 3 and the side plates 2 can be stably fixed together through multidirectional fixing, so that the complete fixing of a plurality of grid plates 1 can be realized without riveting, the risk of grid plates inclining unstably due to the high-temperature in the arc extinguishing process can be effectively avoided, and the reliability of an arc extinguishing chamber is improved.
In addition, the insert 4 may be of an integrated structure with the cover 3 or pre-installed inside the cover 3 in advance to enhance the fit and tightness of the cover 3, the side plates 2 and the grid set.
When the arc extinguishing chamber assembly structure of the circuit breaker is executed, firstly, square bulges at one side of each grid sheet 1 are sequentially inserted into corresponding slotted holes of one side plate 2, then slotted holes of the other side plate 2 are inserted onto square bulges at the other side of each grid sheet 1, so that the grid sheet 1 and the two side plates 2 are assembled in an inserted manner, and the positions of the grid sheets 1 relative to the side plates 2 in the up-down left-right direction can be limited by the cooperation of the square bulges and the slotted holes;
Then, the projections 41 of the two inserts 4 are aligned with the U-shaped grooves 21 on the side plates 2, the inserts 4 are pressed from top to bottom to be assembled into the corresponding square notches, then the cover 3 is clamped at the top ends of the grid sheet 1 and the side plates 2 to limit the front and back, left and right and up and down positions of the grid sheet 1 and the side plates 2, and the cover 3, the side plates 2 and the inserts 4 are fixed together by bolts, so that stable assembly is realized.
While particular embodiments of the present utility model have been described above, it will be appreciated by those skilled in the art that these are merely illustrative, and that many changes and modifications may be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims.
Claims (5)
1. An explosion chamber assembly structure of circuit breaker or isolator, its characterized in that: the novel structure comprises a grid sheet group, wherein the grid sheet group comprises a plurality of grid sheets which are arranged in a row at intervals, the left side and the right side of the grid sheet group are respectively assembled with corresponding side plates in an inserting mode, and the tops of the two side plates are jointly inserted into a notch at the bottom of the cover cap and are connected through threads.
2. The arc chute assembly structure of a circuit breaker or disconnector according to claim 1, characterized in that: l-shaped notches are formed in two sides of the tops of the grid sheets in the middle of the grid sheet group, square notches are formed by the L-shaped notches and the side plates on the corresponding sides, plug-ins matched with the square notches are arranged in the square notches, and bolts penetrate through screw holes in the side walls of the cover cap, the side plates and the corresponding plug-ins to be matched with the square notches, so that the fixation of the three pieces is completed.
3. The arc chute assembly structure of a circuit breaker or disconnector according to claim 2, characterized in that: the side of each plug-in unit, which is contacted with the side plate, is provided with a bump, and the position of each side plate corresponding to the bump is provided with a U-shaped groove matched with the bump so as to limit the front and back positions of the plug-in units.
4. The arc chute assembly structure of a circuit breaker or disconnector according to claim 2, characterized in that: the plug-in and the cover are of an integrated structure.
5. The arc chute assembly structure of a circuit breaker or disconnector according to claim 1, characterized in that: the left side and the right side of each grid sheet are respectively provided with a plurality of square bulges extending outwards, and the corresponding position of each side plate is respectively provided with a slotted hole matched with the square bulges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322656938.6U CN220873513U (en) | 2023-09-28 | 2023-09-28 | Explosion chamber assembly structure of circuit breaker or isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322656938.6U CN220873513U (en) | 2023-09-28 | 2023-09-28 | Explosion chamber assembly structure of circuit breaker or isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220873513U true CN220873513U (en) | 2024-04-30 |
Family
ID=90812934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322656938.6U Active CN220873513U (en) | 2023-09-28 | 2023-09-28 | Explosion chamber assembly structure of circuit breaker or isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220873513U (en) |
-
2023
- 2023-09-28 CN CN202322656938.6U patent/CN220873513U/en active Active
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