A circuit breaker arc chute with insulation protection mechanism

Abstract

The utility model discloses a circuit breaker arc extinguishing cover with insulation protection mechanism, include: arc extinguishing cover cover, arc extinguishing cover cover inside one end inserts the arc extinguishing lining piece of setting, arc extinguishing cover cover inside the other end alternately inserts the arc extinguishing grid piece and mica spacer and is provided with, arc extinguishing cover cover lower part one end damping switches the mounting base, the utility model discloses through setting the arc extinguishing cover cover of DMC plastic material quality outside closure can play better insulation and arc resistance and can prevent arc spatter and external dust invasion, through setting the arc extinguishing lining piece of polyamide material can decompose and produce inert gas under the high temperature of arc, blows the arc and dilutes ionized gas, through setting the mica spacer of alternate separation can play the effect of insulation isolation, restricts arc diffusion range and forces arc circuitous extension path, so when using the safety is higher.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically a circuit breaker arc extinguishing cover with an insulation protection mechanism. Background Technology

[0002] A circuit breaker is a switching device that can connect, carry, and disconnect current under normal and abnormal circuit conditions. The arc extinguishing chamber is an important component of a circuit breaker. When a circuit breaker cuts off the circuit, an electric arc will be generated between the contacts. If the arc cannot be extinguished in time, it will cause the contacts to burn. The arc extinguishing chamber can limit the arc to a certain range and extinguish it quickly to prevent the arc from spreading.

[0003] Arc-extinguishing hoods typically consist of many mutually insulated metal grids, which are generally made of metal materials such as steel or copper. They are installed within an insulating frame, maintaining a certain distance from each other and arranged in parallel. However, existing circuit breaker arc-extinguishing hoods do not have an insulation protection mechanism, resulting in poor safety during use. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that existing circuit breaker arc extinguishing covers do not have an insulation protection mechanism and have poor safety during use, and to provide a circuit breaker arc extinguishing cover with an insulation protection mechanism.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circuit breaker arc extinguishing cover with an insulation protection mechanism, comprising: an arc extinguishing cover outer cover, an arc extinguishing inner liner inserted into one end of the inner side of the arc extinguishing cover outer cover, an arc extinguishing grid plate and a mica spacer alternately inserted into the other end of the inner side of the arc extinguishing cover outer cover, and a mounting base damped at one end of the lower side of the arc extinguishing cover outer cover.

[0006] As a further embodiment of this utility model: the arc-extinguishing cover includes an arc-extinguishing outer cover body, one end of the arc-extinguishing outer cover body is provided with a liner slot, the other end of the arc-extinguishing outer cover body is provided with a grid slot, a cover body adapter plate is fixedly provided at one lower end of the arc-extinguishing outer cover body, the cover body adapter plate is provided with a through hole in the middle of the interior, and the outer surface of the cover body adapter plate is provided with a cover plate annular tooth pattern.

[0007] As a further embodiment of this utility model: the arc-extinguishing inner liner includes an inner liner body, one end of which has an inner liner groove, and the other end of which has an outer limiting protrusion. The number of the inner liner grooves is multiple, and the inner liner body is adapted to be embedded in the inner liner slot.

[0008] As a further embodiment of this utility model: the arc-extinguishing grid includes a U-shaped copper alloy grid, one end of which is fixedly provided with a grid protrusion, which is adapted to be embedded in the groove of the liner.

[0009] As a further embodiment of this utility model: the mica spacer includes a mica spacer body, one end of which is fixedly provided with a mica sheet protrusion, the mica sheet protrusion being adapted to be embedded in the groove of the liner.

[0010] As a further embodiment of this utility model: the mounting base includes a mounting base plate, the mounting base plate has through holes on both sides, a base adapter plate is fixedly installed at one end of the mounting base plate, a connecting rod is fixedly installed in the middle of one end of the base adapter plate, and a base annular tooth pattern is provided on the outer side of one end of the base adapter plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the outer cover of the arc-extinguishing hood, made of DMC plastic, provides better insulation and arc resistance, and prevents arc splashing and external dust intrusion. The inner arc-extinguishing liner, made of polyamide, decomposes to produce inert gas at the high temperature caused by the arc, which blows away the arc and dilutes the ionized gas. The alternating mica spacers provide insulation and isolation, limiting the arc spread range and forcing the arc to detour and extend its path, thus ensuring higher safety during use.

[0013] In this invention, by setting a mounting base that connects to the damping adapter of the arc-extinguishing cover, the rotation angle of the arc-extinguishing cover can be flexibly adjusted to meet different usage needs, making it more convenient to use. When adjusting, rotating the mounting base causes the interlocking annular teeth of the cover plate and the annular teeth of the base to achieve a damping and positioning effect under a certain force, thus achieving both rotational adjustment and positioning limitation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a circuit breaker arc-extinguishing cover with an insulation protection mechanism as described in this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the outer cover of the arc-extinguishing cover in the arc-extinguishing cover of a circuit breaker with an insulation protection mechanism as described in this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the arc-extinguishing inner liner in the arc-extinguishing cover of a circuit breaker with an insulation protection mechanism as described in this utility model;

[0017] Figure 4This is a schematic diagram of the structure of the arc-extinguishing grid plate in the arc-extinguishing cover of a circuit breaker with an insulation protection mechanism as described in this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the mica partition in the arc-extinguishing cover of a circuit breaker with an insulation protection mechanism as described in this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the mounting base in the arc-extinguishing cover of a circuit breaker with an insulation protection mechanism as described in this utility model.

[0020] In the diagram: 1. Arc-extinguishing cover outer casing; 2. Arc-extinguishing inner liner; 3. Arc-extinguishing grid; 4. Mica spacer; 5. Mounting base; 10. Arc-extinguishing outer casing body; 11. Liner slot; 12. Grid slot; 13. Casing adapter plate; 14. Adapter through hole; 15. Casing plate annular toothed pattern; 20. Inner liner body; 21. Liner groove; 22. Outer limiting protrusion; 30. U-shaped copper alloy grid; 31. Grid protrusion; 40. Mica spacer body; 41. Mica sheet protrusion; 50. Mounting base plate; 51. Mounting through hole; 52. Base adapter plate; 53. Adapter round rod; 54. Base annular toothed pattern. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0023] Reference Figure 1 In this embodiment of the utility model, a circuit breaker arc extinguishing cover with an insulation protection mechanism includes: an arc extinguishing cover 1, an arc extinguishing inner liner 2 inserted into one end of the arc extinguishing cover 1, an arc extinguishing grid 3 and a mica spacer 4 alternately inserted into the other end of the arc extinguishing cover 1, and a mounting base 5 damped at one end of the lower part of the arc extinguishing cover 1.

[0024] Reference Figure 2 The arc-extinguishing cover 1 includes an arc-extinguishing cover body 10. One end of the arc-extinguishing cover body 10 has a liner slot 11, and the other end of the arc-extinguishing cover body 10 has a grid slot 12. A cover body adapter plate 13 is fixedly installed at the lower end of the arc-extinguishing cover body 10. A through hole 14 is opened in the middle of the cover body adapter plate 13. The outer surface of the cover body adapter plate 13 is provided with cover plate annular teeth 15. The arc-extinguishing cover body 10 is made of DMC plastic.

[0025] The above solution, by setting an arc-extinguishing cover 1 with an outer closed shape made of DMC plastic, can achieve better insulation and arc resistance, and can prevent arc splashing and external dust intrusion.

[0026] Reference Figure 3 The arc-extinguishing inner liner 2 includes an inner liner body 20. One end of the inner liner body 20 has an inner liner groove 21, and the other end of the inner liner body 20 is fixedly provided with an outer limiting protrusion 22. Multiple sets of inner liner grooves 21 are provided. The inner liner body 20 is adapted to be embedded in the inner liner slot 11. The inner liner body 20 is made of polyamide material.

[0027] The above solution involves setting up an arc-extinguishing inner liner 2 made of polyamide material, which can decompose to generate inert gas at the high temperature caused by the electric arc, thus blowing away the electric arc and diluting the ionized gas.

[0028] Reference Figure 4 The arc-extinguishing grid 3 includes a U-shaped copper alloy grid 30. One end of the U-shaped copper alloy grid 30 is fixedly provided with a grid protrusion 31, which is adapted to be embedded in the liner groove 21.

[0029] The above scheme achieves insulation by setting alternating mica spacers 4, which restricts the arc spread range and forces the arc to extend its path.

[0030] Reference Figure 5 The mica spacer 4 includes a mica spacer body 40, and a mica sheet protrusion 41 is fixedly provided at one end of the mica spacer body 40. The mica sheet protrusion 41 is adapted to be embedded in the liner groove 21.

[0031] Reference Figure 6 The mounting base 5 includes a mounting base plate 50. The mounting base plate 50 has through holes 51 on both sides inside. A base adapter plate 52 is fixedly installed at one end of the mounting base plate 50. An adapter rod 53 is fixedly installed in the middle of one end of the base adapter plate 52. A base annular tooth pattern 54 is provided on the outer side of one end of the base adapter plate 52.

[0032] By adopting the above solution, by setting the mounting base 5 which is connected to the damping adapter of the arc extinguishing cover 1, the rotation angle of the arc extinguishing cover 1 can be flexibly adjusted according to different usage requirements, making it more convenient to use. When adjusting, rotating the mounting base 5, the meshing annular teeth 15 of the cover plate and the annular teeth 54 of the base can play a damping positioning effect under a certain force, thereby achieving both rotation adjustment and positioning limit effect.

[0033] The working principle of this utility model is as follows: In use, the arc-extinguishing inner liner 2 with the liner groove 21 facing the grid slot 12 is first inserted into the liner slot 11. At this time, multiple sets of arc-extinguishing grids 3 and mica spacers 4 are alternately inserted into the grid slot 12 until the grid protrusions 31 and mica protrusions 41 are embedded in the liner groove 21. Thus, the arc-extinguishing cover 1, with its closed outer surface made of DMC plastic, provides better insulation and arc resistance, and prevents arc splashing and external dust intrusion. The arc-extinguishing inner liner 2, made of polyamide material, decomposes under the high temperature caused by the arc to generate inert gas. The body blows the electric arc and dilutes the ionized gas. By setting alternating mica septa 4, it can achieve the effect of insulation and isolation, limiting the arc spread range and forcing the arc to detour and extend its path, thus making it safer to use. By setting the mounting base 5 which is connected to the damping adapter of the arc extinguishing cover 1, the rotation angle of the arc extinguishing cover 1 can be flexibly adjusted according to different usage needs, making it more convenient to use. When adjusting, rotating the mounting base 5, the interlocking annular teeth 15 of the cover plate and the annular teeth 54 of the base can achieve the effect of damping and positioning under a certain force, thus achieving the effect of both rotation adjustment and positioning limit.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A circuit breaker arc-extinguishing cover with an insulation protection mechanism, characterized in that, include: An arc-extinguishing cover (1) is provided with an arc-extinguishing inner liner (2) inserted into one end of the arc-extinguishing cover (1), and an arc-extinguishing grid plate (3) and a mica spacer (4) are alternately inserted into the other end of the arc-extinguishing cover (1). A mounting base (5) is provided at the lower end of the arc-extinguishing cover (1).

2. The circuit breaker arc-extinguishing cover with an insulation protection mechanism according to claim 1, characterized in that, The arc-extinguishing cover (1) includes an arc-extinguishing cover body (10). A liner slot (11) is provided at one end of the arc-extinguishing cover body (10), and a grid slot (12) is provided at the other end of the arc-extinguishing cover body (10). A cover body adapter plate (13) is fixedly provided at one end of the lower part of the arc-extinguishing cover body (10). A through hole (14) is provided in the middle of the cover body adapter plate (13), and a cover plate annular tooth pattern (15) is provided on the outer surface of the cover body adapter plate (13).

3. The circuit breaker arc-extinguishing cover with an insulation protection mechanism according to claim 1, characterized in that, The arc-extinguishing inner liner (2) includes an inner liner body (20), one end of which is provided with a liner groove (21), and the other end of which is fixedly provided with an outer limiting protrusion (22). The number of liner grooves (21) is multiple.

4. The circuit breaker arc-extinguishing cover with an insulation protection mechanism according to claim 1, characterized in that, The arc-extinguishing grid (3) includes a U-shaped copper alloy grid (30), and a grid protrusion (31) is fixedly provided at one end of the U-shaped copper alloy grid (30).

5. A circuit breaker arc-extinguishing cover with an insulation protection mechanism according to claim 1, characterized in that, The mica spacer (4) includes a mica spacer body (40), and a mica sheet protrusion (41) is fixedly provided at one end of the mica spacer body (40).

6. A circuit breaker arc-extinguishing cover with an insulation protection mechanism according to claim 1, characterized in that, The mounting base (5) includes a mounting base plate (50), and mounting through holes (51) are provided on both sides of the mounting base plate (50). A base adapter plate (52) is fixedly provided at one end of the mounting base plate (50). A connecting rod (53) is fixedly provided in the middle of one end of the base adapter plate (52). A base annular tooth pattern (54) is provided on the outer side of one end of the base adapter plate (52).

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