Explosion-proof shell for cable joint

Abstract

The utility model discloses a cable joint explosion-proof shell, which relates to the technical field of cables, and comprises an upper shell and a lower shell, the upper shell and the lower shell are both in a half circle shape, and the two sides of the upper shell and the lower shell are respectively and fixedly connected with a first connecting lug and a second connecting lug. The opposite sides of the first connecting lug and the second connecting lug are each provided with a disassembling and assembling mechanism, and the upper shell and the lower shell are each fixedly connected with a heat conduction column. According to the cable joint explosion-proof shell, after a fixing hook completely enters a fixing groove, pressure is not applied to a top block, so that a reset spring releases elasticity to reset the top block, and a limiting plate is separated from the interior of a contact groove and moves oppositely, so that the limiting plate enters the interior of the fixing hook; therefore, the fixation between the upper shell and the lower shell is completed, the cable joint explosion-proof shell is more convenient and faster in the installation and subsequent disassembly processes, and the installation speed is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an explosion-proof shell for a cable joint. Background Art

[0002] In recent years, with the acceleration of urbanization in my country, the power industry has also developed rapidly. Since overhead cables will affect the appearance of the city and there are many restrictions on the erection of poles and towers, cables are generally installed through cable trenches, cable channels or directly buried underground, which has also led to more and more cable joints. The waterproofness, acid and alkali corrosion resistance, insulation performance, and mechanical strength of the cable joints are low, and they are easily affected by moisture or dielectric aging, causing cable breakdown and short circuits, and then fires and explosions. At present, there are a large number of cables in each cable channel in my country. When a cable joint catches fire and explodes, it will inevitably ignite other cables, causing a secondary explosion, resulting in damage to the cables in the cable tunnel. In order to prevent secondary accidents caused by fire at the cable joints, cable joints are currently protected by cable joint explosion-proof shells. The cable joint explosion-proof shell generally includes two semicircular shells connected by bolts, and the inside of the shell is wrapped with tape or injected with insulating sealant;

[0003] However, most of the existing explosion-proof shells are fixed by bolts. As a result, when the explosion-proof shell needs to be disassembled, as the service life increases, it is easy for the bolts to rust and become unable to be removed. At the same time, the bolts are easily broken by corrosion from water vapor, causing the explosion-proof shell to crack, thereby reducing the protective effect of the cable joint. Therefore, a cable joint explosion-proof shell is proposed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide an explosion-proof shell for a cable connector, which can solve the problems of the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cable connector explosion-proof shell, comprising an upper shell and a lower shell, wherein the upper shell and the lower shell are both half-circular, and a first connecting ear and a second connecting ear are fixedly connected on both sides of the upper shell and the lower shell respectively, and a disassembly and assembly mechanism is provided on the side opposite to the first connecting ear and the second connecting ear, and a heat-conducting column is fixedly connected to the upper shell and the lower shell, and the heat-conducting column extends to the interior of the upper shell and the lower shell.

[0006] Preferably, the disassembly and assembly mechanism includes two fixing hooks, which are respectively fixedly connected on the side opposite to the first connecting ear and the second connecting ear, and two fixing grooves are provided on the side opposite to the first connecting ear. A cavity is provided inside the second connecting ear, and two limit plates are slidably connected inside the cavity. The limit plates extend through the interior of the fixing grooves, and springs are fixedly connected to the limit plates, and the end of the spring that does not contact the limit plate is fixedly connected to the inner wall of the cavity.

[0007] Preferably, the second connecting ear is slidably connected to a top block on the side away from the first connecting ear, the top block penetrates into the interior of the cavity, the upper end of the top block is fixedly connected to a return spring, the end of the return spring that does not contact the top block is fixedly connected to the inner wall of the cavity, contact grooves are provided on both sides of the top block, the two fixing hooks are in relative L-shape, the fixing grooves and the fixing hooks are arranged opposite to each other, the contact grooves are half a circle, and the ends of the two limit plates close to the top block are arc-shaped.

[0008] Preferably, a moisture absorbing layer is fixedly connected inside the upper shell and the lower shell, a side of the moisture absorbing layer away from the upper shell and the lower shell is fixedly connected to a thermal conductive gel, and the thermal conductive column penetrates the moisture absorbing layer and is fixedly connected to the thermal conductive gel.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] (1) The explosion-proof shell of the cable connector moves the upper shell and the lower shell relative to each other, so that the fixing hook is inserted into the interior of the fixing groove. At this time, the top block is pressed, and the top block moves upward to contract the reset spring, so that the contact groove moves to the position where the limit plate is located. At this time, the spring releases its elasticity to allow the two limit plates to enter the interior of the contact groove respectively. At this time, the fixing hook can continue to move downward. When the fixing hook completely enters the interior of the fixing groove, it no longer applies pressure to the top block. Therefore, the reset spring releases its elasticity to reset the top block, and then the limit plate detaches from the interior of the contact groove and moves in reverse, so that the limit plate enters the interior of the fixing hook, thereby completing the fixation between the upper shell and the lower shell, thereby making the cable connector explosion-proof shell more convenient and quick during installation and subsequent disassembly, thereby improving the installation speed.

[0011] (2) The explosion-proof shell of the cable connector reduces the mechanical obstruction between the two by setting the contact groove to be half a circle and one end of the top block to be arc-shaped, so that the limit plate can slide in or out of the contact groove more smoothly, thereby ensuring the normal use of the explosion-proof shell.

[0012] (3) The explosion-proof shell of the cable connector has a moisture-absorbing layer, so that the explosion-proof shell has a good moisture-absorbing effect, which prevents moisture from penetrating into the interior of the explosion-proof shell, thereby effectively avoiding the cable short circuit caused by water vapor. At the same time, the thermal conductive gel is in contact with the thermal conductive column, so the heat inside the explosion-proof shell can be adsorbed and transferred to the thermal conductive column through the heat absorption performance of the thermal conductive gel, so that the heat inside the explosion-proof shell is dissipated to the outside through the thermal conductive column. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 This is a schematic diagram of the structure of an explosion-proof shell of a cable connector of the utility model;

[0015] Figure 2 This is a schematic diagram of the disassembly of an explosion-proof shell of a cable connector of the utility model;

[0016] Figure 3 This utility model shows the intention of separating the thermal conductive gel and the moisture absorbing layer;

[0017] Figure 4 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0018] Figure 5 This is a schematic diagram of the interior of the second connecting ear of the utility model;

[0019] Figure 6 For this utility model Figure 5 Enlarged schematic diagram of point B in the middle.

[0020] Figure numerals: 1. upper shell; 2. lower shell; 3. first connecting ear; 4. second connecting ear; 5. heat-conducting column; 6. contact groove; 7. moisture-absorbing layer; 8. heat-conducting gel; 9. fixing hook; 10. fixing groove; 11. limiting plate; 12. cavity; 13. spring; 14. top block; 15. reset spring. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] See also Figure 1-6The utility model provides a technical solution: a cable connector explosion-proof shell, comprising an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 are both half-circular, the upper shell 1 and the lower shell 2 are respectively fixedly connected with a first connecting ear 3 and a second connecting ear 4 on both sides, and a disassembly mechanism is provided on the opposite side of the first connecting ear 3 and the second connecting ear 4;

[0023] The upper shell 1 and the lower shell 2 are both fixedly connected with a heat-conducting column 5, and the heat-conducting column 5 extends to the inside of the upper shell 1 and the lower shell 2;

[0024] The heat-conducting column 5 is made of metal material with fast heat conduction;

[0025] By means of the provided disassembly and assembly mechanism, the explosion-proof shell can be quickly sleeved on the cable joint. At the same time, by means of the provided metal material of the heat-conducting column 5, the heat generated inside the explosion-proof shell can be quickly dissipated to the outside, thereby avoiding damage to the cable joint caused by the high temperature inside the explosion-proof shell and avoiding the stability of power transmission at the cable joint.

[0026] Furthermore, a moisture absorbing layer 7 is fixedly connected inside the upper shell 1 and the lower shell 2, a heat conducting gel 8 is fixedly connected to the side of the moisture absorbing layer 7 away from the upper shell 1 and the lower shell 2, and the heat conducting column 5 passes through the moisture absorbing layer 7 and is fixedly connected to the heat conducting gel 8;

[0027] Wherein, the material of the moisture absorbing layer 7 is activated carbon;

[0028] The moisture-absorbing layer 7 is provided so that the explosion-proof shell has a good moisture-absorbing effect, which prevents moisture from penetrating into the interior of the explosion-proof shell, thereby effectively avoiding the cable short circuit caused by water vapor. At the same time, the thermally conductive gel 8 is in contact with the thermally conductive column 5, so the heat inside the explosion-proof shell can be adsorbed and transferred to the thermally conductive column 5 through the heat absorption performance of the thermally conductive gel 8, so that the heat inside the explosion-proof shell is dissipated to the outside through the thermally conductive column 5.

[0029] Further, the disassembly and assembly mechanism includes two fixing hooks 9, which are respectively fixedly connected to the side of the first connecting ear 3 opposite to the second connecting ear 4, and two fixing grooves 10 are provided on the side of the second connecting ear 4 opposite to the first connecting ear 3. A cavity 12 is provided inside the second connecting ear 4, and two limit plates 11 are slidably connected inside the cavity 12. The limit plates 11 penetrate into the interior of the fixing grooves 10, and springs 13 are fixedly connected to the limit plates 11, and the end of the spring 13 that does not contact the limit plate 11 is fixedly connected to the inner wall of the cavity 12;

[0030] The second connecting ear 4 is slidably connected to a top block 14 on one side away from the first connecting ear 3. The top block 14 penetrates into the cavity 12. A return spring 15 is fixedly connected to the upper end of the top block 14. The end of the return spring 15 that is not in contact with the top block 14 is fixedly connected to the inner wall of the cavity 12. Contact grooves 6 are provided on both sides of the top block 14.

[0031] The two fixing hooks 9 are in an L-shape relative to each other, and the fixing groove 10 is arranged opposite to the fixing hooks 9;

[0032] When the upper shell 1 and the lower shell 2 need to be fixed, it is only necessary to put the cable connector into the interior of the upper shell 1 and the lower shell 2. At this time, the upper shell 1 and the lower shell 2 are moved relatively, so that the fixing hook 9 is inserted into the interior of the fixing groove 10. At this time, the top block 14 is pressed, and the top block 14 moves upward to cause the return spring 15 to contract, so that the contact groove 6 moves to the position where the limit plate 11 is located. At this time, the spring 13 releases its elasticity so that the two limit plates 11 enter the interior of the contact groove 6 respectively, and the fixing hook 9 can continue to move downward. When the fixing hook 9 completely enters the interior of the fixing groove 10, it no longer applies pressure on the top block 14. Therefore, the return spring 15 releases its elasticity so that the top block 14 is reset, and then the limit plate 11 is disengaged from the interior of the contact groove 6 and moves in reverse, so that the limit plate 11 enters the interior of the fixing hook 9, thereby completing the fixation between the upper shell 1 and the lower shell 2, thereby making the cable connector explosion-proof shell more convenient and quick during installation and subsequent disassembly, thereby improving the installation speed.

[0033] Furthermore, the contact groove 6 is half a circle, and one end of the two limit plates 11 close to the top block 14 is arc-shaped;

[0034] By setting the contact groove 6 to be half a circle and one end of the top block 14 to be arc-shaped, the mechanical blocking phenomenon between the two is reduced, so that the limit plate 11 can slide in or out of the contact groove 6 more smoothly, thereby ensuring the normal use of the explosion-proof shell.

[0035] The elasticity of the return spring 15 is greater than that of the spring 13 , and the top block 14 can only slide on the second connecting ear 4 and cannot be separated therefrom.

[0036] Working principle: When the upper shell 1 and the lower shell 2 need to be fixed, it is only necessary to put the cable connector into the upper shell 1 and the lower shell 2. At this time, the upper shell 1 and the lower shell 2 are relatively moved, so that the fixing hook 9 is inserted into the inside of the fixing groove 10. At this time, the top block 14 is pressed, and the top block 14 moves upward to cause the return spring 15 to contract, so that the contact groove 6 moves to the position where the limit plate 11 is located. At this time, the spring 13 releases its elasticity so that the two limit plates 11 enter the inside of the contact groove 6 respectively. At this time, the fixing hook 9 can continue to move downward. When the fixing hook 9 is completely inserted into the fixing groove After being inside the fixed groove 10, the top block 14 is no longer pressurized, so the reset spring 15 releases its elasticity to reset the top block 14, and then the limit plate 11 is disengaged from the inside of the contact groove 6 and moves in reverse, so that the limit plate 11 enters the inside of the fixing hook 9, thereby completing the fixation between the upper shell 1 and the lower shell 2. When it needs to be disassembled, it is only necessary to press the top block 14 again, so that the limit plate 11 moves relatively, so it is disengaged from the inside of the fixing hook 9, and then no longer restricts the fixing hook 9, so that the upper shell 1 and the lower shell 2 can be easily disassembled.

[0037] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A cable connector explosion-proof housing, comprising an upper housing (1) and a lower housing (2), characterized in that: The upper shell (1) and the lower shell (2) are both half-circular, and the first connecting ear (3) and the second connecting ear (4) are fixedly connected to the two sides of the upper shell (1) and the lower shell (2), respectively. A disassembly mechanism is provided on the side opposite to the first connecting ear (3) and the second connecting ear (4), and the upper shell (1) and the lower shell (2) are both fixedly connected to a heat-conducting column (5), which extends to the interior of the upper shell (1) and the lower shell (2).

2. The explosion-proof housing for a cable connector according to claim 1, characterized in that: The disassembly and assembly mechanism comprises two fixing hooks (9), the two fixing hooks (9) are respectively fixedly connected to the side of the first connecting ear (3) opposite to the second connecting ear (4), two fixing grooves (10) are provided on the side of the second connecting ear (4) opposite to the first connecting ear (3), a cavity (12) is arranged inside the second connecting ear (4), two limiting plates (11) are slidably connected inside the cavity (12), the limiting plates (11) penetrate into the inside of the fixing grooves (10), springs (13) are fixedly connected to the limiting plates (11), and the end of the spring (13) not in contact with the limiting plate (11) is fixedly connected to the inner wall of the cavity (12).

3. The explosion-proof housing for a cable connector according to claim 2, characterized in that: A top block (14) is slidably connected to a side of the second connecting ear (4) away from the first connecting ear (3); the top block (14) extends into the interior of the cavity (12); a return spring (15) is fixedly connected to the upper end of the top block (14); an end of the return spring (15) that is not in contact with the top block (14) is fixedly connected to the inner wall of the cavity (12); and contact grooves (6) are provided on both sides of the top block (14).

4. The explosion-proof housing for a cable connector according to claim 2, characterized in that: The two fixing hooks (9) are in an L-shape relative to each other, and the fixing groove (10) and the fixing hooks (9) are arranged relative to each other.

5. The explosion-proof housing for a cable connector according to claim 3, characterized in that: The contact groove (6) is in the shape of a half circle, and one end of the two limit plates (11) close to the top block (14) is in an arc shape.

6. The explosion-proof housing for a cable connector according to claim 1, characterized in that: The interiors of the upper shell (1) and the lower shell (2) are both fixedly connected with a moisture absorbing layer (7).

7. The explosion-proof housing for a cable connector according to claim 6, characterized in that: A heat-conducting gel (8) is fixedly connected to a side of the moisture-absorbing layer (7) away from the upper shell (1) and the lower shell (2), and the heat-conducting column (5) penetrates the moisture-absorbing layer (7) and is fixedly connected to the heat-conducting gel (8).

Images