CN219226210U - Spliced arc extinguishing system for plastic case circuit breaker - Google Patents
Spliced arc extinguishing system for plastic case circuit breaker Download PDFInfo
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- CN219226210U CN219226210U CN202320188627.9U CN202320188627U CN219226210U CN 219226210 U CN219226210 U CN 219226210U CN 202320188627 U CN202320188627 U CN 202320188627U CN 219226210 U CN219226210 U CN 219226210U
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Abstract
The utility model discloses a spliced arc extinguishing system for a molded case circuit breaker, which comprises a first arc extinguishing chamber (1) and a second arc extinguishing chamber (2) which are arranged in a split mode and are mutually buckled and connected, wherein a first arc extinguishing plate group (3) is arranged in the first arc extinguishing chamber (1), a second arc extinguishing plate group (4) is arranged in the second arc extinguishing chamber (2), a separation plate (5) is connected between the first arc extinguishing chamber (1) and the second arc extinguishing chamber (2), and an upper arc striking port (6) communicated with the first arc extinguishing chamber (1) and a lower arc striking port (7) communicated with the second arc extinguishing chamber (2) are respectively formed on two sides of the end part of the separation plate (5). The utility model can improve the self arc extinguishing effect and is convenient for manufacturers to process and assemble.
Description
Technical Field
The utility model relates to an arc extinguishing system of a circuit breaker, in particular to a splicing type arc extinguishing system for a molded case circuit breaker.
Background
The moving contact and the fixed contact of the circuit breaker can generate a large amount of electric arcs due to air breakdown in the breaking process, and the electric arcs in the gas need to be cut through an arc extinguishing system, so that the electric arcs are rapidly extinguished after being cut into small electric arcs, and the arc extinguishing effect is achieved. In order to improve the arc striking effect on arc gas, the existing arc extinguishing system can extend an arc extinguishing grid plate to the left side and the right side of a movable contact and a fixed contact, so that the arc gas generated when the movable contact and the fixed contact are disconnected can be introduced into the arc extinguishing system at the first time. However, as the existing arc extinguishing grid plates cut the arc in a stacking manner, the stacking quantity of the arc extinguishing grid plates can be directly related to the height space of the arc extinguishing chamber, namely, the larger the height space occupied by the arc extinguishing system is, the better the arc extinguishing effect is. This makes it difficult for the arc extinguishing system to achieve the desired arc extinguishing effect when the arc extinguishing chamber is not high enough, thereby reducing the service life and safety of the circuit breaker.
Disclosure of Invention
The utility model aims to provide a spliced arc extinguishing system for a molded case circuit breaker. The arc extinguishing device can improve the arc extinguishing effect of the arc extinguishing device and is convenient for processing and assembly of factories.
The technical scheme of the utility model is as follows: the utility model provides a splice-type arc extinguishing system for moulded case circuit breaker, is including being split type setting and the first explosion chamber and the second explosion chamber of mutual lock connection, is equipped with first explosion plate group in the first explosion chamber, is equipped with the second explosion plate group in the second explosion chamber, is connected with the division board between first explosion chamber and the second explosion chamber, and the tip both sides of division board form respectively and communicate the last arc striking mouth of first explosion chamber and communicate the lower arc striking mouth of second explosion chamber.
In the spliced arc extinguishing system for the molded case circuit breaker, one side of the partition plate is fixedly connected with the first arc extinguishing chamber, and the other side of the partition plate is buckled with the second arc extinguishing chamber.
In the spliced arc extinguishing system for the molded case circuit breaker, the insulating embedded layer is coated on the outer portion of the partition plate, a first step groove is formed between the insulating embedded layer and the side wall of the partition plate, and the second arc extinguishing chamber is connected with the partition plate through the first step groove in a buckled mode.
In the spliced arc extinguishing system for the molded case circuit breaker, one end of the insulation embedded layer extends to the outer side of the partition plate and forms a limiting plate, a clamping opening is formed between the limiting plate and the partition plate, and the upper end of the second arc extinguishing chamber is buckled and connected with the clamping opening.
In the spliced arc extinguishing system for the molded case circuit breaker, the first arc extinguishing chamber is provided with the second step groove at one end close to the second arc extinguishing chamber, and the second arc extinguishing chamber is provided with the extension part for buckling the second step groove.
In the splice-type arc extinguishing system for the molded case circuit breaker, the first arc extinguishing plate group and the second arc extinguishing plate group are arranged at left and right intervals, the lower ends of the first arc extinguishing plate group and the second arc extinguishing plate group are distributed in an up-down staggered mode, and the lower arc striking opening is located at one side of the second arc extinguishing plate group along the horizontal direction.
In the spliced arc extinguishing system for the molded case circuit breaker, the first arc extinguishing plate group is provided with a first air outlet positioned at the top of the first arc extinguishing chamber on one side far away from the upper arc striking port, and the second arc extinguishing plate group is provided with a second air outlet positioned at the side part of the second arc extinguishing chamber on one side far away from the lower arc striking port.
In the spliced arc extinguishing system for the molded case circuit breaker, one end of the first arc extinguishing chamber extends outwards to form the arc striking plates, the arc striking plates are symmetrically arranged on the left side and the right side of the upper arc striking opening, and the upper ends of the arc striking plates are buckled and connected with the arc blocking cover.
Compared with the prior art, the utility model has the following characteristics:
(1) According to the utility model, through the cooperation of the first arc-extinguishing plate group, the second arc-extinguishing plate group and the partition plate, the generated arc gas can enter the upper arc striking port and the lower arc striking port respectively after being partitioned by the partition plate, and the first arc-extinguishing plate group and the second arc-extinguishing plate group are used for cutting and extinguishing arc respectively; the number of the arc-extinguishing grid plates can be increased on the basis of not changing the height of the arc-extinguishing system by the first arc-extinguishing plate group and the second arc-extinguishing plate group which are arranged in a left-right staggered manner, so that the arc-extinguishing effect of the utility model is improved;
(2) The first arc extinguishing chamber and the second arc extinguishing chamber are arranged in a split mode and are mutually buckled and formed, so that on one hand, manufacturers can independently process and assemble the first arc extinguishing chamber and the second arc extinguishing chamber, processing cost is reduced, processing efficiency is improved, on the other hand, the first arc extinguishing chamber and the second arc extinguishing chamber can be integrally fixed in the circuit breaker after being spliced, connection stability and arcing effect of the first arc extinguishing chamber and the second arc extinguishing chamber are guaranteed, and the first arc extinguishing chamber and the second arc extinguishing chamber are convenient to install and fix by the manufacturers; on the basis, the second arc extinguishing chamber is buckled and fixed by utilizing the matching of the partition plate, the insulating embedded layer and the limiting plate, and the plugging and fixing and the connecting strength of the partition plate, the insulating embedded layer and the limiting plate after buckling can be facilitated, so that the connecting stability and the arc striking effect of the partition plate and the limiting plate are further improved;
(3) Through the cooperation of the arc striking plate and the arc blocking cover which are arranged at the outer side of the upper arc striking opening, the moving contact can rotate and open at the upper arc striking opening, and the electric arc generated when the moving contact is disconnected is intercepted, so that the electric arc gas smoothly enters the first arc extinguishing chamber and the second arc extinguishing chamber under the action of the arc striking plate and the arc blocking cover, namely, the impact damage to surrounding parts after the electric arc is generated is effectively avoided, and the working stability of the utility model is improved;
therefore, the utility model can improve the self arc extinguishing effect and is convenient for manufacturers to process and assemble.
Drawings
FIG. 1 is a cross-sectional view of the present utility model;
FIG. 2 is an outline view of the present utility model;
fig. 3 is a cross-sectional view in the direction a of fig. 2.
The marks in the drawings are: the arc extinguishing device comprises a first arc extinguishing chamber, a second arc extinguishing chamber, a first arc extinguishing plate group, a second arc extinguishing plate group, a 5-partition plate, a 6-upper arc striking opening, a 7-lower arc striking opening, an 8-insulating embedding layer, a 9-first step groove, a 10-limiting plate, a 11-second step groove, a 12-extending part, a 13-first air outlet, a 14-second air outlet, a 15-arc striking plate and a 16-arc blocking cover.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.
Examples. The utility model provides a splice-type arc extinguishing system for moulded case circuit breaker constitutes as shown in figure 1, including being split type setting and mutual lock connected first explosion chamber 1 and second explosion chamber 2, be equipped with first explosion plate group 3 in the first explosion chamber 1, be equipped with second explosion plate group 4 in the second explosion chamber 2, first explosion plate group 3 and second explosion plate group 4 are formed by a plurality of arc extinguishing bars piece side by side setting, be connected with division board 5 between first explosion chamber 1 and the second explosion chamber 2, division board 5's appearance is the zigzag, division board 5's tip both sides form respectively and communicate first explosion chamber 1's last arc striking mouth 6 and communicate second explosion chamber 2's lower arc striking mouth 7.
One side of the separation plate 5 is fixedly connected to one side of the first arc-extinguishing chamber 1, and the other side of the separation plate 5 is buckled and connected to the other side of the second arc-extinguishing chamber 2.
The outside cladding of division board 5 has insulating inlayed layer 8, and the both ends of insulating inlayed layer 8 wrap up division board 5 completely, form first step groove 9 between the lateral wall of the middle part of insulating inlayed layer 8 and the both sides of division board 5, first explosion chamber 1 and the mutual lock in first step groove 9 are fixed, division board 5 is connected through first step groove 9 lock to second explosion chamber 2.
One end of the insulation embedded layer 8 extends to the outer side of the partition plate 5 and forms a limiting plate 10, a U-shaped clamping opening is formed between the limiting plate 10 and the partition plate 5, and the upper end of the second arc extinguishing chamber 2 is buckled and connected with the clamping opening.
The first arc-extinguishing chamber 1 is provided with a second step groove 11 at one end close to the second arc-extinguishing chamber 2, the second arc-extinguishing chamber 2 is provided with an extension part 12 for buckling the second step groove 11, and the upper end of the extension part 12 after buckling is mutually attached to the partition plate 5.
The first arc-extinguishing plate group 3 and the second arc-extinguishing plate group 4 are arranged at left-right intervals, the lower ends of the first arc-extinguishing plate group 3 and the second arc-extinguishing plate group 4 are distributed in an up-down staggered mode, and the lower arc striking opening 7 is located at one side of the second arc-extinguishing plate group 4 along the horizontal direction and below the end part of the separation plate 5.
The first arc-extinguishing plate group 3 is provided with a first air outlet 13 positioned at the top of the first arc-extinguishing chamber 1 at one side far away from the upper arc striking port 6, and the second arc-extinguishing plate group 4 is provided with a second air outlet 14 positioned at the side part of the second arc-extinguishing chamber 2 at one side far away from the lower arc striking port 7; the limiting plate 10 is provided with an air outlet hole matched with the second air outlet 14.
One end of the first arc extinguishing chamber 1 extends outwards to form an arc striking plate 15, the arc striking plate 15 is symmetrically arranged at the left side and the right side of the upper arc striking opening 6, the upper end of the arc striking plate 15 is buckled and connected with an arc blocking cover 16, and the arc blocking cover 16 completely shields the top of the upper arc striking opening 6; the static contact is positioned at the lower end of the interval part of the arc striking plates 15 at the two sides.
The partition plate 5 is sleeved with a U-shaped guide plate at one end close to the arc striking plate 15, and the guide plate is formed by bending a metal sheet and is coated outside the insulation embedded layer 8.
The working principle of the utility model is as follows: when the circuit breaker is installed, the second arc-extinguishing chamber 2 is vertically and upwardly inserted into the first arc-extinguishing chamber 1 directly, so that the upper end of the second arc-extinguishing chamber 2 is buckled in the clamping opening, the side wall of the second arc-extinguishing chamber 2 is buckled in the first step groove 9, and the extension part 12 at the lower end of the second arc-extinguishing chamber 2 is buckled in the second step groove 11, so that the second arc-extinguishing chamber 2 and the first arc-extinguishing chamber are buckled and fixed with each other by utilizing the buckling structure, and an integrated arc-extinguishing system is formed and installed in the circuit breaker shell. And the movable contact and the fixed contact of the circuit breaker are positioned between the two arc striking plates 15 on one side of the first arc extinguishing chamber 1 after being installed. When the arc extinguishing device is used, the moving contact and the fixed contact are mutually separated and generate a large amount of electric arcs, and at the moment, the electric arc gas at the position of the fixed contact enters the second arc extinguishing chamber 2 along the lower arc striking opening 7 below the separation plate 5 under the guidance of the arc striking plate 15, the fixed contact and the separation plate 5; the arc gas which moves upwards along with the opening of the follow-up contact enters the first arc extinguishing chamber 1 along the upper arc striking opening 6 above the separation plate 5 under the guidance of the arc striking plate 15, the arc blocking cover 16 and the separation plate 5, so that the arc is cut by the first arc extinguishing plate group 3 and the second arc extinguishing plate group 4 respectively to realize arc extinguishing. The first arc-extinguishing plate group 3 and the second arc-extinguishing plate group 4 are arranged in a left-right staggered mode, so that the sum of the heights of the first arc-extinguishing plate group 3 and the second arc-extinguishing plate group 4 can be larger than the whole height of an arc-extinguishing system, and the arc-extinguishing effect of the arc-extinguishing system is improved under the condition that the height of an arc-extinguishing chamber is not changed.
Claims (8)
1. A splice-type arc extinguishing system for a molded case circuit breaker is characterized in that: including being split type setting and first explosion chamber (1) and second explosion chamber (2) of mutual lock connection, be equipped with first explosion board group (3) in first explosion chamber (1), be equipped with second explosion board group (4) in second explosion chamber (2), be connected with division board (5) between first explosion chamber (1) and second explosion chamber (2), the tip both sides of division board (5) form respectively and communicate last arc striking mouth (6) of first explosion chamber (1) and lower arc striking mouth (7) of intercommunication second explosion chamber (2).
2. The splice-type arc extinguishing system for a molded case circuit breaker according to claim 1, wherein: one side of the separation plate (5) is fixedly connected with the first arc-extinguishing chamber (1), and the other side of the separation plate (5) is buckled and connected with the second arc-extinguishing chamber (2).
3. The splice-type arc extinguishing system for a molded case circuit breaker according to claim 2, wherein: the outside cladding of division board (5) has insulating inlayed layer (8), forms first step groove (9) between the lateral wall of insulating inlayed layer (8) and division board (5), second explosion chamber (2) are through first step groove (9) lock connection division board (5).
4. A splice-type arc extinguishing system for a molded case circuit breaker as claimed in claim 3, wherein: one end of the insulating embedded layer (8) extends to the outer side of the partition plate (5) and forms a limiting plate (10), a clamping opening is formed between the limiting plate (10) and the partition plate (5), and the upper end of the second arc extinguishing chamber (2) is buckled and connected with the clamping opening.
5. The splice-type arc extinguishing system for a molded case circuit breaker according to claim 1, wherein: the first arc extinguishing chamber (1) is provided with a second step groove (11) at one end close to the second arc extinguishing chamber (2), and the second arc extinguishing chamber (2) is provided with an extension part (12) for buckling the second step groove (11).
6. The splice-type arc extinguishing system for a molded case circuit breaker according to claim 1, wherein: the first arc-extinguishing plate group (3) and the second arc-extinguishing plate group (4) are arranged at left-right intervals, the lower ends of the first arc-extinguishing plate group (3) and the lower ends of the second arc-extinguishing plate group (4) are distributed in a vertically staggered mode, and the lower arc striking opening (7) is located at one side of the second arc-extinguishing plate group (4) along the horizontal direction.
7. The splice-type arc extinguishing system for a molded case circuit breaker according to claim 1, wherein: the first arc-extinguishing plate group (3) is provided with a first air outlet (13) positioned at the top of the first arc-extinguishing chamber (1) on one side far away from the upper arc striking port (6), and the second arc-extinguishing plate group (4) is provided with a second air outlet (14) positioned at the side part of the second arc-extinguishing chamber (2) on one side far away from the lower arc striking port (7).
8. The splice-type arc extinguishing system for a molded case circuit breaker according to claim 1, wherein: one end of the first arc extinguishing chamber (1) extends outwards to form an arc striking plate (15), the arc striking plate (15) is symmetrically arranged on the left side and the right side of the upper arc striking opening (6), and the upper end of the arc striking plate (15) is buckled and connected with an arc blocking cover (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320188627.9U CN219226210U (en) | 2023-01-29 | 2023-01-29 | Spliced arc extinguishing system for plastic case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320188627.9U CN219226210U (en) | 2023-01-29 | 2023-01-29 | Spliced arc extinguishing system for plastic case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219226210U true CN219226210U (en) | 2023-06-20 |
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ID=86757138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320188627.9U Active CN219226210U (en) | 2023-01-29 | 2023-01-29 | Spliced arc extinguishing system for plastic case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219226210U (en) |
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2023
- 2023-01-29 CN CN202320188627.9U patent/CN219226210U/en active Active
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