High-temperature protection type overvoltage protector

Abstract

The utility model discloses a high-temperature protection type overvoltage protector, which comprises a shell and a placing box, and a sodium bicarbonate filling layer is filled in the placing box. According to the device, the sodium bicarbonate filling layer is combined to the bottom of the shell, the through pipe is inserted into the inserting hole, the air tightness of connection between the inserting hole and the through pipe is guaranteed through a rubber ring, then a supporting plate and the shell are fixed through cooperation of a locking rod and a side block, and a spring at the top of the supporting plate is compressed and abuts against the bottom of the containing box; a sodium bicarbonate filling layer can be automatically decomposed at a high temperature, generated carbon dioxide flame-retardant gas enters a gas cavity through conduction of an insertion pipe and a through pipe, the shell is filled with non-combustible gas, the safety protection effect at the high temperature is achieved, and through cooperation of a spring and a supporting plate, the placement box is effectively protected, and meanwhile the safety of the placement box is improved. And the through pipe and the insertion hole are always kept in a stable combination state.

Description

Technical Field

[0001] The utility model relates to the technical field of overvoltage protectors, in particular to a high-temperature protection type overvoltage protector. Background Art

[0002] An overvoltage protector is a device designed to protect electrical equipment from overvoltage surges. It is primarily used in power systems, including power plants, substations, and various industrial and civil power distribution systems, to ensure the safe operation of electrical equipment.

[0003] Chinese patent publication number CN218216677U, publication date 20230103, discloses a six-column full-phase overvoltage protection device, including an overvoltage protector housing, a receiving groove opened at the bottom of the overvoltage protector housing, and a placement box arranged inside the receiving groove. The placement box is filled with a sodium bicarbonate filling layer, the inner wall of the overvoltage protector housing is opened with an air cavity, the side wall of the air cavity is opened with multiple through holes, and the top of the placement box is connected to the air cavity.

[0004] For example, the above-mentioned existing high-temperature protection type overvoltage protector adopts a sodium bicarbonate filling layer, which can achieve the purpose of automatic decomposition at high temperatures, so that the interior of the overvoltage protector shell is filled with non-flammable gas, achieving the function of safety protection at high temperatures. In the specific implementation process, the stability of the placement box is often not guaranteed by only using the horizontally sliding limit block, and the connection of the placement box can be further optimized. Therefore, it is urgent to propose a corresponding high-temperature protection type overvoltage protector to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a high temperature protection type overvoltage protector in order to solve the above problems.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A high-temperature protection type overvoltage protector includes a shell and a placement box, the placement box is filled with a sodium bicarbonate filling layer, an air cavity is opened inside the shell, and the interior of the placement box is connected to the air cavity, and a through hole is opened on the outer wall of the shell that is connected to the air cavity, the bottom of the shell is detachably connected to a support plate, the top of the support plate is fixedly connected to a support spring, and the top of the support spring abuts against the bottom of the placement box.

[0008] Preferably, side blocks are fixedly connected to both sides of the horizontal end of the support plate, the outer walls of the side blocks are engaged with the bottom of the shell through slots, and the side blocks are fixedly connected to the bottom of the shell through locking rods.

[0009] Preferably, a rubber plug is interference-fitted at the bottom of the side block, and the top of the rubber plug abuts against the bottom of the locking rod.

[0010] Preferably, the support springs are provided in multiple groups, and the multiple groups of support springs are distributed in a rectangular shape.

[0011] Preferably, a through-tube is fixedly connected to the top of the placement box, and the outer wall of the through-tube is plugged into the interior of the shell through a socket.

[0012] Preferably, a rubber ring is fixedly connected to the inner surface wall of the insertion hole, and the inner surface wall of the rubber ring abuts against the outer surface wall of the through pipe.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] 1. In the present application, the sodium bicarbonate filling layer is combined with the bottom of the shell, and the through-tube is inserted into the inside of the socket. The rubber ring ensures the airtightness of the connection between the socket and the through-tube. Then, the support plate is fixed to the shell by the cooperation of the locking rod and the side block. The spring on the top of the support plate is compressed and abuts against the bottom of the placement box. When the ambient temperature is too high, the sodium bicarbonate filling layer can automatically decompose at high temperature, and the generated carbon dioxide flame-retardant gas enters the air cavity through the connection between the inserting tube and the through-tube, so that the inside of the shell is filled with non-flammable gas, realizing the function of safety protection at high temperature. Through the cooperation of the spring and the support plate, the placement box is effectively protected while the through-tube and the socket are always kept in a stably combined state.

[0015] 2. In this application, after the side block and the shell are fixed by the locking rod, the rubber plug is inserted into the bottom of the side block. The interference fit method ensures the stability of the position of the rubber plug itself. While the rubber plug isolates the side block, the friction generated by the contact between the rubber plug and the locking rod can also effectively limit the loosening of the locking rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a schematic diagram of the overall structure provided according to an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of a support plate structure provided according to an embodiment of the present utility model is shown;

[0018] Figure 3 A schematic diagram of a spring structure provided according to an embodiment of the present utility model is shown;

[0019] Figure 4 A schematic diagram of the structure of a rubber ring provided according to an embodiment of the utility model is shown.

[0020] Legend:

[0021] 1. Shell; 2. Through hole; 3. Placement box; 4. Support spring; 5. Slot; 6. Support plate; 7. Side block; 8. Locking rod; 9. Rubber plug; 10. Sodium bicarbonate filling layer; 11. Through tube; 12. Air cavity; 13. Jack; 14. Rubber ring. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A high-temperature protection type overvoltage protector includes a shell 1 and a placement box 3. The placement box 3 is filled with a sodium bicarbonate filling layer 10. An air cavity 12 is defined within the shell 1, and the interior of the placement box 3 is in communication with the air cavity 12. A through hole 2 is defined on the outer wall of the shell 1, which is in communication with the air cavity 12. A support plate 6 is detachably connected to the bottom of the shell 1, and a support spring 4 is fixedly connected to the top of the support plate 6, and the top of the support spring 4 abuts against the bottom of the placement box 3.

[0025] The sodium bicarbonate filling layer 10 is combined with the bottom of the shell 1, and the through-tube 11 is inserted into the inside of the socket 13. The rubber ring 14 ensures the airtightness of the connection between the socket 13 and the through-tube 11. Then, the support plate 6 is fixed to the shell 1 by the cooperation of the locking rod 8 and the side block 7. The spring 4 on the top of the support plate 6 is compressed and abuts against the bottom of the placement box 3. When the ambient temperature is too high, the sodium bicarbonate filling layer 10 can automatically decompose at high temperature, and the generated carbon dioxide flame-retardant gas passes through the conduction between the through-tube 11 and the socket 13 and enters the air cavity 12, so that the inside of the shell 1 is filled with non-combustible gas, realizing the function of safety protection at high temperature. Through the cooperation of the spring 4 and the support plate 6, the placement box 3 is effectively protected while the through-tube 11 and the socket 13 are always kept in a stably combined state.

[0026] Specifically, such as Figure 2 and Figure 4As shown, side blocks 7 are fixedly connected on both sides of the horizontal end of the support plate 6. The outer wall of the side block 7 is engaged with the bottom of the shell 1 through the card slot 5, and the side block 7 is fixedly connected to the bottom of the shell 1 through the locking rod 8, so as to ensure the convenience of disassembly and assembly of the support plate 6. A rubber plug 9 is interference fit with the bottom of the side block 7, and the top of the rubber plug 9 abuts against the bottom of the locking rod 8. After the side block 7 and the shell 1 are fixed by the locking rod 8, the rubber plug 9 is inserted into the bottom of the side block 7. The interference fit method ensures that the position of the rubber plug 9 itself is stable. While the rubber plug 9 realizes the isolation of the side block 7, the friction generated by the contact between the rubber plug 9 and the locking rod 8 can also effectively limit the loosening of the locking rod 8.

[0027] Specifically, such as Figure 2 and Figure 3 As shown, multiple groups of support springs 4 are provided, and the multiple groups of support springs 4 are distributed in a rectangular shape, which fits the structural characteristics of the placement box 3, ensuring that the placement box 3 is evenly stressed. A through-tube 11 is fixedly connected to the top of the placement box 3, and the outer wall of the through-tube 11 is inserted into the interior of the shell 1 through the socket 13. The sodium bicarbonate filling layer 10 can automatically decompose at high temperatures, and the generated carbon dioxide flame-retardant gas enters the air cavity 12 through the conduction between the through-tube 11 and the socket 13. A rubber ring 14 is fixedly connected to the inner wall of the socket 13, and the inner wall of the rubber ring 14 is in contact with the outer wall of the through-tube 11. The rubber ring 14 ensures the airtightness of the connection between the socket 13 and the through-tube 11.

[0028] Working principle: Combine the sodium bicarbonate filling layer 10 to the bottom of the shell 1, and insert the through pipe 11 into the inside of the jack 13. The rubber ring 14 ensures the airtightness of the connection between the jack 13 and the through pipe 11. Then, the support plate 6 is fixed to the shell 1 through the cooperation of the locking rod 8 and the side block 7. The spring 4 on the top of the support plate 6 is compressed and abuts against the bottom of the placement box 3. When the ambient temperature is too high, the sodium bicarbonate filling layer 10 can automatically decompose at high temperature, and the generated carbon dioxide flame retardant gas passes through the conduction between the through pipe 11 and the jack 13 and enters the air cavity 12, making The interior of the shell 1 is filled with non-combustible gas to achieve safety protection at high temperatures. Through the cooperation of the spring 4 and the support plate 6, the placement box 3 is effectively protected while the through pipe 11 and the socket 13 always maintain a stable combination state. After the side block 7 and the shell 1 are fixed by the locking rod 8, the rubber plug 9 is inserted into the bottom of the side block 7. The interference fit method ensures the stability of the position of the rubber plug 9 itself. While the rubber plug 9 isolates the side block 7, the friction generated by the contact between the rubber plug 9 and the locking rod 8 can also effectively limit the loosening of the locking rod 8.

[0029] The above description of the embodiments is intended to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high temperature protection type overvoltage protector, comprising a housing (1) and a placement box (3), characterized in that: The interior of the placement box (3) is filled with a sodium bicarbonate filling layer (10); an air cavity (12) is provided in the interior of the housing (1), and the interior of the placement box (3) is in communication with the air cavity (12); an outer wall of the housing (1) is provided with a through hole (2) in communication with the air cavity (12); a support plate (6) is detachably connected to the bottom of the housing (1); a support spring (4) is fixedly connected to the top of the support plate (6), and the top of the support spring (4) abuts against the bottom of the placement box (3).

2. A high temperature protection type overvoltage protector according to claim 1, characterized in that: Side blocks (7) are fixedly connected to both sides of the horizontal end of the support plate (6); the outer wall of the side block (7) is engaged with the bottom of the shell (1) through the card slot (5); and the side block (7) is fixedly connected to the bottom of the shell (1) through the locking rod (8).

3. A high temperature protection type overvoltage protector according to claim 2, characterized in that: The bottom of the side block (7) is interference-fitted with a rubber plug (9), and the top of the rubber plug (9) abuts against the bottom of the locking rod (8).

4. A high temperature protection type overvoltage protector according to claim 3, characterized in that: The support springs (4) are provided in multiple groups, and the multiple groups of support springs (4) are distributed in a rectangular shape.

5. A high temperature protection type overvoltage protector according to claim 4, characterized in that: A through pipe (11) is fixedly connected to the top of the placement box (3), and the outer wall of the through pipe (11) is plugged into the interior of the housing (1) through a plug hole (13).

6. A high temperature protection type overvoltage protector according to claim 5, characterized in that: The inner surface wall of the insertion hole (13) is fixedly connected with a rubber ring (14), and the inner surface wall of the rubber ring (14) abuts against the outer surface wall of the through pipe (11).

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