Arc extinguishing device

Abstract

The utility model relates to the technical field of arc elimination, in particular to an arc extinguishing device which comprises a fixing plate, an arc extinguishing chamber and a shell are fixedly connected to the left side and the right side of the top end of the fixing plate respectively, an air switch is arranged on the inner side of the arc extinguishing chamber, and an alarm is fixedly connected to the right end of the outer side of the shell. A circuit break sensor and a controller are fixedly connected to the left end face of the inner side of the shell from top to bottom in sequence, a telescopic rod and a button are fixedly connected to the centers of the top end face and the bottom end face of the inner side of the shell respectively, a fixing block is fixedly connected to the front end of the rear end face of the inner side of the shell, and a push rod is slidably connected to the inner side of the fixing block; the top end of the push rod is fixedly connected with a moving block, and when the air switch is disconnected, the arc extinguishing device can extinguish the arc generated by the disconnection of the air switch, and can timely remind a maintainer to overhaul the circuit, so that the overhaul efficiency is improved, and the circuit can be quickly recovered to normal use.

Description

Technical Field

[0001] The utility model relates to the technical field of arc elimination, in particular to an arc extinguishing device. Background Art

[0002] Electric arc is a form of gas discharge, which is divided into self-sustaining discharge and non-self-sustaining discharge. For electrical appliances with contacts, since electric arc is mainly generated when the contacts disconnect the circuit, the high temperature will burn the contacts and insulation. In severe cases, it may even cause phase short circuit and electrical explosion, resulting in fire and endangering the safety of personnel and equipment. Therefore, it is necessary to use arc extinguishing devices to extinguish arcs for electrical appliances that may cause electric shock. For example, when an air switch detects an overload problem in the circuit and a circuit is broken, an arc will be generated. Therefore, arc extinguishing devices are often used to extinguish arcs for air switches. When the arc extinguishing device extinguishes the arc for the air switch, it can only extinguish the arc generated by the circuit breaking of the air switch, but cannot promptly remind maintenance personnel to inspect the circuit, resulting in slow circuit inspection efficiency. Therefore, an arc extinguishing device is proposed to address the above problems. Utility Model Content

[0003] The utility model aims to provide an arc extinguishing device, which, in addition to extinguishing the arc generated by the air switch, can also promptly remind maintenance personnel to inspect the circuit, thereby improving the inspection efficiency.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An arc extinguishing device comprises a fixed plate, wherein the left and right sides of the top end of the fixed plate are fixedly connected with an arc extinguishing chamber and a shell respectively, an air switch is arranged on the inner side of the arc extinguishing chamber, the air switch is fixedly connected with the fixed plate, an alarm is fixedly connected with the outer right end of the shell, a circuit breaker sensor and a controller are fixedly connected with the inner left end face of the shell in sequence from top to bottom, a telescopic rod and a button are fixedly connected with the central positions of the top and bottom end faces of the inner side of the shell respectively, a fixed block is fixedly connected with the front end of the rear end face of the inner side of the shell, a push rod is slidably connected with the inner side of the fixed block, a moving block is fixedly connected with the top end of the push rod, a spring is covered on the outer side of the push rod, and the spring is fixedly connected with both the fixed block and the moving block.

[0006] Preferably, a slide groove is provided on the inner side of the rear end surface of the shell, and the moving block is slidably connected to the slide groove.

[0007] Preferably, arc-extinguishing grids are fixedly connected to the rear end, the front end and the top end of the arc-extinguishing chamber, and the arc-extinguishing grids are evenly distributed on the inner side of the arc-extinguishing chamber.

[0008] Preferably, both the inner left end surface and the inner right end surface of the arc extinguishing chamber are fixedly connected with an insulating layer, and the insulating layer is a ceramic insulating layer.

[0009] Preferably, the cross-sectional shape of the insulating layer is wavy.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. In the utility model, by setting a fixed plate, an arc extinguishing chamber, a shell, an alarm, a controller, a telescopic rod, a button, a fixed block, a push rod, a moving block, a spring and an air switch, when the air switch is short-circuited, the arc extinguishing device can extinguish the arc generated by the short-circuit of the air switch, and at the same time can timely remind maintenance personnel to inspect the circuit, improve the efficiency of the inspection, and enable the circuit to quickly resume normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at point A.

[0014] In the figure: 1-fixed plate, 2-arc extinguishing chamber, 3-housing, 4-alarm, 5-controller, 6-telescopic rod, 7-button, 8-fixed block, 9-push rod, 10-moving block, 11-spring, 12-air switch, 13-slide, 14-arc extinguishing grid, 15-insulating layer, 16-circuit breaker sensor. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-2 , the utility model provides a technical solution:

[0017] An arc extinguishing device comprises a fixed plate 1, wherein an arc extinguishing chamber 2 and a shell 3 are fixedly connected to the left and right sides of the top of the fixed plate 1, respectively; an air switch 12 is arranged on the inner side of the arc extinguishing chamber 2, and the air switch 12 is fixedly connected to the fixed plate 1; an alarm 4 is fixedly connected to the outer right end of the shell 3; a circuit breaker sensor 16 and a controller 5 are fixedly connected to the inner left end face of the shell 3 in sequence from top to bottom; a telescopic rod 6 and a button 7 are fixedly connected to the central positions of the inner top end face and the bottom end face of the shell 3, respectively; a fixed block 8 is fixedly connected to the front end of the inner rear end face of the shell 3, a push rod 9 is slidably connected to the inner side of the fixed block 8, a moving block 10 is fixedly connected to the top end of the push rod 9, a spring 11 is covered on the outer side of the push rod 9, and the spring 11 is fixedly connected to both the fixed block 8 and the moving block 10. Through this arrangement, after the air switch 12 detects that there is an overload problem in the circuit and a circuit breaker occurs, the alarm can be activated through the controller 5. Device 4 can remind maintenance personnel to repair as soon as possible. A slide groove 13 is provided on the inner side of the rear end face of the shell 3. The moving block 10 is slidably connected to the slide groove 13. The sliding of the moving block 10 in the slide groove 13 can make the moving block 10 more stable when moving up and down. The rear end, front end and top end of the arc extinguishing chamber 2 are fixedly connected with arc extinguishing grids 14. The arc extinguishing grids 14 are evenly distributed on the inner side of the arc extinguishing chamber 2. The evenly arranged arc extinguishing grids 14 can achieve a better arc extinguishing effect. The inner left and right end faces of the arc extinguishing chamber 2 are fixedly connected with an insulating layer 15, which is a ceramic insulating layer. The insulating layer 15 can be set so that when the arc contacts the insulating layer 15, the insulating layer 15 can quickly cool the arc. The cross-sectional shape of the insulating layer 15 is wavy. Through this arrangement, the contact area between the arc and the insulating layer 15 can be enhanced, thereby improving the cooling speed of the arc.

[0018] Working process: Before use, the utility model is powered by an external power supply. When the air switch 12 detects an overload problem in the circuit and a circuit is broken, the arc generated by the circuit breaking of the air switch 12 contacts the arc extinguishing grids 14 at the front and rear ends and the top of the arc extinguishing chamber 2. The arc extinguishing grids 4 cut the arc, and part of the arc contacts the surface of the insulating layer 15. Finally, the arc extinguishing grids 4 and the insulating layer 15 can play a good role in cooling and extinguishing the arc, thereby increasing the speed of arc extinguishing. At the same time, after the circuit breaker sensor 16 detects that the air switch 12 is broken, it transmits a signal to the controller 5. The controller 5 controls the start of the extension of the telescopic rod 6. The extended telescopic rod 6 pushes the moving block 10 and the push rod 9, and compresses the spring 11 at the same time. The push rod 9 slides downward inside the fixed block 8, and the moving block 10 slides downward inside the slide groove 13 until the bottom of the push rod 9 triggers the button 7. At this time, the alarm 4 is started by the button 7, and finally the maintenance personnel can be reminded in time to quickly repair the circuit, thereby improving the efficiency of repairing the circuit.

[0019] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An arc extinguishing device, comprising a fixing plate (1), characterized in that: The top left and right sides of the fixed plate (1) are respectively fixedly connected with an arc extinguishing chamber (2) and a housing (3); an air switch (12) is arranged inside the arc extinguishing chamber (2); the air switch (12) is fixedly connected with the fixed plate (1); an alarm (4) is fixedly connected to the right end of the outer side of the housing (3); a circuit breaker sensor (16) and a controller (5) are fixedly connected to the inner left end face of the housing (3) from top to bottom in sequence; a telescopic rod (6) and a button (7) are respectively fixedly connected at the central positions of the top end face and the bottom end face of the inner side of the housing (3); a fixed block (8) is fixedly connected to the front end of the inner rear end face of the housing (3); a push rod (9) is slidably connected to the inner side of the fixed block (8); a moving block (10) is fixedly connected to the top end of the push rod (9); a spring (11) is covered on the outer side of the push rod (9); the spring (11) is fixedly connected to both the fixed block (8) and the moving block (10).

2. An arc extinguishing device according to claim 1, characterized in that: A sliding groove (13) is provided on the inner side of the rear end surface of the housing (3), and the moving block (10) is slidably connected to the sliding groove (13).

3. An arc extinguishing device according to claim 1, characterized in that: Arc extinguishing grids (14) are fixedly connected to the rear end, the front end and the top end of the arc extinguishing chamber (2), and the arc extinguishing grids (14) are evenly distributed on the inner side of the arc extinguishing chamber (2).

4. An arc extinguishing device according to claim 1, characterized in that: The inner left end surface and the inner right end surface of the arc extinguishing chamber (2) are both fixedly connected with an insulating layer (15), and the insulating layer (15) is a ceramic insulating layer.

5. An arc extinguishing device according to claim 4, characterized in that: The cross-sectional shape of the insulating layer (15) is wavy.

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