Intelligent explosion-proof box for cable intermediate joint

Abstract

The invention discloses an intelligent explosion-proof box for a cable intermediate joint, and particularly relates to the technical field of explosion-proof boxes for cable joints, the intelligent explosion-proof box comprises an upper explosion-proof box body and a lower explosion-proof box body, the upper end of the upper explosion-proof box body is fixedly provided with a containing box, and the containing box is filled with sodium bicarbonate particles; a containing box is arranged in the upper anti-explosion box body, a plurality of heat conduction rods are arranged in the containing box in a sliding mode, one end of each heat conduction rod penetrates through the upper anti-explosion box body and is fixedly connected with a heat collection piston arranged on the inner side of the upper anti-explosion box body, an anti-explosion barrel is fixedly arranged on the inner side wall of the upper anti-explosion box body, and an air bag is arranged in the anti-explosion barrel. When explosion is generated in the explosion-proof box body, sodium bicarbonate particles in the containing box can be heated and decomposed, the sodium bicarbonate particles absorb heat when being heated and decomposed, the explosion-proof box body can be cooled, carbon dioxide can be generated through decomposition, and the carbon dioxide can be sprayed into the explosion-proof box body through an air distribution plate; the oxygen content in the explosion-proof box body can be reduced, and the probability of combustion is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cable joint explosion-proof boxes, in particular to an intelligent explosion-proof box for a cable intermediate joint. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station outgoing lines, internal power supplies for industrial and mining enterprises, and underwater transmission lines across rivers and seas. Cables are an increasingly important component of power lines. Cable joints are the weakest link in a cable, so they require protection. They are crucial connections in power supply networks, and their stability directly impacts the proper functioning of the entire network. Explosion-proof boxes are one such example.

[0003] Most existing explosion-proof boxes for cable intermediate joints use a box structure made of explosion-proof materials. For example, Chinese patent publication number CN 209709656 U discloses a waterproof explosion-proof box for cable intermediate joints. This box only utilizes the explosion-proof properties of the left and right box bodies to achieve an explosion-proof effect. This results in poor explosion-proof performance and a high risk of fire inside the box body, posing a significant safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent explosion-proof box for a cable intermediate joint to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A smart explosion-proof box for a cable intermediate joint comprises an upper explosion-proof box body and a lower explosion-proof box body, the upper explosion-proof box body and the lower explosion-proof box body being fixed by bolts, a receiving box being fixedly provided on the upper end of the upper explosion-proof box body, the interior of the receiving box being filled with sodium bicarbonate particles, a plurality of heat-conducting rods being slidably provided inside the receiving box, one end of the heat-conducting rod passing through the upper explosion-proof box body and being fixedly connected to a heat-collecting piston arranged inside the upper explosion-proof box body, an explosion-proof cylinder being fixedly provided on the inner side wall of the upper explosion-proof box body, and an airbag being provided inside the explosion-proof cylinder.

[0007] In a preferred embodiment, waterproof blockages are provided on the inner walls at both ends of the upper explosion-proof box body and the lower explosion-proof box body, and anti-slip blocks are fixedly provided on the inner walls at both ends of the upper explosion-proof box body and the lower explosion-proof box body. The provision of waterproof blockages can improve the sealing of the explosion-proof box body. In the specific provision, sealing rings are provided at the end joints of the upper explosion-proof box body and the lower explosion-proof box body, so that the waterproof effect is better.

[0008] In a preferred embodiment, an air distribution plate is fixedly arranged between the two anti-slip blocks inside the upper explosion-proof box body, and an air supply pipe is arranged at the upper end of the air distribution plate. One end of the air supply pipe is connected to the internal cavity of the storage box. The arrangement of the air distribution plate can evenly ventilate the interior of the explosion-proof box body, so that the air distribution effect is better.

[0009] In a preferred embodiment, a filter is provided at the connection point between the air supply pipe and the containing box, and a plurality of air nozzles are provided at the bottom end of the air distribution plate.

[0010] In a preferred embodiment, the heat collecting piston is movably arranged inside the piston cylinder, and a first buffer spring is fixedly arranged on the inner wall of the heat collecting piston. The heat collecting piston can slide inside the piston cylinder, so that the heat collecting piston can squeeze the first buffer spring and have a buffering effect.

[0011] In a preferred embodiment, a piston plate is slidingly provided inside the explosion-proof cylinder, a second buffer spring is fixedly provided on the upper end of the piston plate, the airbag is arranged above the piston plate, and the piston plate slides inside the explosion-proof cylinder to squeeze the second buffer spring, which can achieve a buffering and explosion-proof effect.

[0012] In a preferred embodiment, the interior of the airbag is filled with inert gas, a connecting tube is provided on the airbag, and one end of the connecting tube is connected to the air distribution plate, and a pressure valve is provided on the connecting tube. When the piston plate slides, it can squeeze the airbag and squeeze out the inert gas inside the airbag, thereby reducing the oxygen content inside the explosion-proof box body and preventing combustion.

[0013] In a preferred embodiment, a pressure relief valve and a control box are provided at the outer end of the upper explosion-proof box body, a trigger protrusion is fixedly provided on the upper end of one of the piston plates, a trigger button is provided on the inner wall of the explosion-proof cylinder directly above the trigger protrusion, and a controller and a wireless transmission module are provided inside the control box. The sliding of the piston plate can make the trigger protrusion contact the trigger button, thereby remotely transmitting the abnormal information to the control terminal, which can promptly remind the staff to handle it and facilitate positioning.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention adds a receiving box and a piston cylinder to the explosion-proof box body. The interior of the receiving box is filled with sodium bicarbonate particles. When an explosion occurs inside the explosion-proof box body, the internal temperature rises rapidly, which can cause the sodium bicarbonate particles inside the receiving box to decompose under heat. The sodium bicarbonate particles absorb heat during thermal decomposition, which can cool the explosion-proof box body. In addition, the decomposition can produce carbon dioxide, which can be sprayed into the explosion-proof box body through the air distribution plate, thereby reducing the oxygen content inside the explosion-proof box body and reducing the probability of combustion, thereby achieving a better explosion-proof effect.

[0016] 2. The present invention provides a piston cylinder, an explosion-proof cylinder, a piston plate, a heat collecting piston, a first buffer spring, and a second buffer spring. When an explosion occurs inside the explosion-proof box, the impact force generated by the explosion can cause the heat collecting piston and the piston plate to squeeze the first buffer spring and the second buffer spring respectively, thereby achieving a certain buffering effect.

[0017] 3. The present invention provides an airbag inside the explosion-proof cylinder and fills the airbag with inert gas. The impact force generated by the explosion causes the piston plate to squeeze the airbag, which can squeeze the inert gas inside the airbag into the air distribution plate, reducing the oxygen content inside the explosion-proof box and reducing the probability of combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic cross-sectional view of the present invention;

[0020] Figure 3 It is a schematic diagram of the partial internal structure of the explosion-proof tube of the present invention.

[0021] Numbers in the figure: 1. Upper explosion-proof box body; 2. Lower explosion-proof box body; 3. Container box; 4. Sodium bicarbonate particles; 5. Heat-conducting rod; 6. Heat-collecting piston; 7. Explosion-proof cylinder; 8. Air bag; 9. Waterproof block; 10. Anti-slip block; 11. Air distribution plate; 12. Air pipe; 13. Injector head; 14. Piston cylinder; 15. First buffer spring; 16. Piston plate; 17. Second buffer spring; 18. Connecting pipe; 19. Pressure valve; 20. Pressure relief valve; 21. Control box; 22. Trigger protrusion; 23. Trigger button. DETAILED DESCRIPTION

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

[0023] Example: See Figure 1 、 Figure 2 and Figure 3 The present invention provides an intelligent explosion-proof box for cable intermediate joints, and the technical solution is as follows:

[0024] A smart explosion-proof box for a cable intermediate joint comprises an upper explosion-proof box body 1 and a lower explosion-proof box body 2, the upper explosion-proof box body 1 and the lower explosion-proof box body 2 being fixed by bolts, a receiving box 3 being fixedly provided at the upper end of the upper explosion-proof box body 1, the interior of the receiving box 3 being filled with sodium bicarbonate particles 4, a plurality of heat-conducting rods 5 being slidably provided inside the receiving box 3, one end of the heat-conducting rod 5 passing through the upper explosion-proof box body 1 and being fixedly connected to a heat-collecting piston 6 arranged on the inner side of the upper explosion-proof box body 1, an explosion-proof cylinder 7 being fixedly provided on the inner side wall of the upper explosion-proof box body 1, an airbag 8 being provided inside the explosion-proof cylinder 7.

[0025] In a preferred embodiment, waterproof blockages 9 are provided on the inner walls at both ends of the upper explosion-proof box body 1 and the lower explosion-proof box body 2, and anti-slip blocks 10 are fixedly provided on the inner walls at both ends of the upper explosion-proof box body 1 and the lower explosion-proof box body 2. The provision of the waterproof blockages 9 can improve the waterproof effect of the explosion-proof box body, and the anti-slip blocks 10 can contact the cables to improve the stability of the cables.

[0026] In a preferred embodiment, an air distribution plate 11 is fixedly arranged between the two anti-slip blocks 10 on the inner side of the upper explosion-proof box body 1, and an air supply pipe 12 is arranged at the upper end of the air distribution plate 11. One end of the air supply pipe 12 is connected to the internal cavity of the storage box 3. The setting of the air distribution plate 11 can make the air inside the explosion-proof box body uniformly distributed.

[0027] In a preferred embodiment, a filter is provided at the connection point between the gas pipe 12 and the containing box 3 , and a plurality of nozzles 13 are provided at the bottom end of the air distribution plate 11 . The filter can prevent the sodium bicarbonate particles 4 from entering the gas pipe 12 .

[0028] In a preferred embodiment, the heat collecting piston 6 is movably arranged inside the piston cylinder 14, and a first buffer spring 15 is fixedly arranged on the inner wall of the heat collecting piston 6, a piston plate 16 is slidingly arranged inside the explosion-proof cylinder 7, and a second buffer spring 17 is fixedly arranged on the upper end of the piston plate 16, and the airbag 8 is arranged above the piston plate 16. During specific use, if an explosion impact occurs inside the explosion-proof box body, the impact force pushes the heat collecting piston 6 and the piston plate 16, so that the heat collecting piston 6 and the piston plate 16 squeeze the first buffer spring 15 and the second buffer spring 17 respectively, thereby achieving a buffering effect and reducing the scope of the explosion.

[0029] In a preferred embodiment, the interior of the airbag 8 is filled with inert gas, a connecting pipe 18 is provided on the airbag 8, and one end of the connecting pipe 18 is connected to the air distribution plate 11, and a pressure valve 19 is provided on the connecting pipe 18. When the piston plate 16 slides inside the explosion-proof cylinder 7, it can squeeze the airbag 8, so that the internal pressure of the airbag 8 increases. When the preset value of the pressure valve 19 is reached, the pressure valve 19 opens, and the inert gas inside the airbag 8 enters the air distribution plate 11 and is blown out.

[0030] In a preferred embodiment, a pressure relief valve 20 and a control box 21 are provided at the outer end of the upper explosion-proof box body 1, a trigger protrusion 22 is fixedly provided on the upper end of one of the piston plates 16, and a trigger button 23 is provided on the inner wall of the explosion-proof cylinder 7 directly above the trigger protrusion 22, and a controller and a wireless transmission module are provided inside the control box 21. After the pressure relief valve 20 is opened, the strong pressure inside the explosion-proof box body can be released, and the abnormal data can be transmitted to the remote control terminal by using the wireless transmission module, which is convenient for the staff to handle it in time and locate the abnormal cable middle joint.

[0031] Working principle of the present invention:

[0032] When in use, place the two cables in the lower explosion-proof box body 2 and connect the two cables, then dock and fix the upper explosion-proof box body 1 with the lower explosion-proof box body 2. If an explosion occurs inside the explosion-proof box body during use, the internal temperature will rise sharply. After the heat collecting piston 6 heats up, it transfers heat to the heat conducting rod 5. After the temperature of the heat conducting rod 5 inside the receiving box 3 rises, the sodium bicarbonate particles 4 inside the receiving box 3 are decomposed by heat. The sodium bicarbonate particles 4 absorb heat when decomposing, which can cool the explosion-proof box body and produce more carbon dioxide gas. The carbon dioxide gas enters the air distribution plate 11 through the gas pipe 12 and blows air into the interior of the explosion-proof box body through the air distribution plate 11. The impact force of the explosion can cause the heat collecting piston 6 and the piston plate 16 to slide inside the piston cylinder 14 and the explosion-proof cylinder 7 to squeeze the first buffer spring 15 and the second buffer spring. 17. It can buffer the impact force of the explosion, and the piston plate 16 squeezes the airbag 8 when it slides. The pressure inside the airbag 8 is relatively high, and the pressure valve 19 opens. The inert gas inside the airbag 8 enters the air distribution plate 11 through the connecting pipe 18, and the air distribution plate 11 blows inert gas into the interior of the explosion-proof box body. Since the air distribution plate 11 blows more carbon dioxide gas and inert gas into the interior of the explosion-proof box body, the oxygen content inside the explosion-proof box body is relatively low, which can prevent combustion from occurring inside the explosion-proof box body. When the pressure inside the explosion-proof box body is relatively high, the pressure relief valve 20 opens to relieve pressure. When the piston plate 16 moves to a certain position, the trigger protrusion 22 contacts the trigger button 23. The controller transmits the abnormal information inside the explosion-proof box body to the remote control terminal through the wireless communication module, and the staff can deal with the abnormal cable intermediate joint in time.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An intelligent explosion-proof box for a cable intermediate joint, comprising an upper explosion-proof box body (1) and a lower explosion-proof box body (2), wherein the upper explosion-proof box body (1) and the lower explosion-proof box body (2) are fixed by bolts, characterized in that: A accommodating box (3) is fixedly provided at the upper end of the upper explosion-proof box body (1), the interior of the accommodating box (3) is filled with sodium bicarbonate particles (4), a plurality of heat-conducting rods (5) are slidably provided inside the accommodating box (3), one end of each heat-conducting rod (5) passes through the upper explosion-proof box body (1) and is fixedly connected to a heat-collecting piston (6) provided inside the upper explosion-proof box body (1), an explosion-proof cylinder (7) is fixedly provided on the inner side wall of the upper explosion-proof box body (1), and an air bag (8) is provided inside the explosion-proof cylinder (7).

2. The intelligent explosion-proof box for cable intermediate joints according to claim 1, characterized in that: Waterproof blocking blocks (9) are provided on the inner side walls at both ends of the upper explosion-proof box body (1) and the lower explosion-proof box body (2), and anti-slip blocking blocks (10) are fixedly provided on the inner side walls at both ends of the upper explosion-proof box body (1) and the lower explosion-proof box body (2).

3. The intelligent explosion-proof box for cable intermediate joints according to claim 2, characterized in that: An air distribution plate (11) is fixedly arranged between the two anti-slip blocks (10) inside the upper explosion-proof box body (1), and an air supply pipe (12) is arranged at the upper end of the air distribution plate (11), and one end of the air supply pipe (12) is communicated with the internal cavity of the accommodating box (3).

4. The intelligent explosion-proof box for cable intermediate joints according to claim 3, characterized in that: A filter is provided at the connection point between the air delivery pipe (12) and the containing box (3), and a plurality of air jet heads (13) are provided at the bottom end of the air distribution plate (11).

5. The intelligent explosion-proof box for cable intermediate joints according to claim 1, characterized in that: The heat collecting piston (6) is movably arranged inside the piston cylinder (14), and a first buffer spring (15) is fixedly arranged on the inner side wall of the heat collecting piston (6).

6. The intelligent explosion-proof box for cable intermediate joints according to claim 3, characterized in that: A piston plate (16) is slidably provided inside the explosion-proof cylinder (7), a second buffer spring (17) is fixedly provided on the upper end of the piston plate (16), and the air bag (8) is provided above the piston plate (16).

7. The intelligent explosion-proof box for cable intermediate joints according to claim 6, characterized in that: The interior of the airbag (8) is filled with inert gas. A connecting pipe (18) is provided on the airbag (8), and one end of the connecting pipe (18) is connected to the air distribution plate (11). A pressure valve (19) is provided on the connecting pipe (18).

8. The intelligent explosion-proof box for cable intermediate joints according to claim 6, characterized in that: The outer end of the upper explosion-proof box body (1) is provided with a pressure relief valve (20) and a control box (21), the upper end of one of the piston plates (16) is fixedly provided with a trigger protrusion (22), and a trigger button (23) is provided on the inner side wall of the explosion-proof cylinder (7) just above the trigger protrusion (22), and a controller and a wireless transmission module are provided inside the control box (21).

Images