Cable joint explosion-proof box with fire extinguishing and heat dissipation functions

Abstract

The utility model discloses a cable joint explosion-proof box with fire extinguishing and heat dissipation functions, which belongs to the technical field of power transmission line protection, and comprises a first substrate, an explosion-proof box capable of wrapping the end part of the first substrate is arranged outside one end part of the first substrate, and a second substrate is arranged outside the explosion-proof box. The explosion-proof box is filled with a filling body, and a first filling piece with a fire extinguishing function and / or a second filling piece with a heat conduction function are / is arranged in the filling body. The device provided by the utility model has active fire extinguishing and heat dissipation functions, can effectively protect the cable joint and ensure the surrounding safety, and is long in service life and high in reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to power transmission line protection technical field, concretely relates to a cable joint explosion -proof box with fire extinguishing and heat dissipation function. BACKGROUND

[0002] In modern electric power electrical engineering, the cable joint is an important part of connecting the power system, and its quality directly affects the stability and safety of the entire power system. However, the cable joint is prone to the following risks during use: a) arc may occur on the wire contact surface, breaking the insulation layer and igniting the combustible gas or dust in the environment; b) poor or aged joint insulation, leading to cable short circuit or electric leakage; c) increased resistance due to contact resistance, oxidation or invasion of joint material, causing excessive heating of the cable. These problems not only reduce the efficiency of the power system, but also may cause fire accidents and other safety accidents.

[0003] Prior art solutions: existing cable joints usually use protective boxes to isolate from the environment to ensure sealing and insulation. For example, some cable joints are installed with explosion-proof boxes made of high-strength materials such as ceramic and glass steel to protect and isolate; some existing technologies also use materials with fire extinguishing function to attach to the cable joint, such as the existing technology CN202010067313.4 discloses a fire extinguishing sticker, which includes a shell and a plurality of fire extinguishing structures arranged on the shell. The plurality of fire extinguishing structures are independent and spaced apart, and each fire extinguishing structure can be independently activated to extinguish fire when the environment is on fire. A plurality of spaced and independent fire extinguishing structures are provided on the shell, and when a fire occurs, the fire extinguishing structures close to the fire source are triggered first to extinguish the fire, and the remaining fire extinguishing structures are left. The fire extinguishing sticker can be applied to cable joint protection devices to extinguish fires caused by wire overload or other causes in time, but the above-mentioned prior art solutions still have room for improvement in terms of cable joint protection, prevention of cable peripheral fires, and heat dissipation improvement.

[0004] In addition, some cable joint explosion-proof boxes use cooling systems such as fans and water cooling to reduce the temperature of the cable joint and prevent it from overheating. However, these cooling systems often have high energy consumption, high maintenance cost, and poor reliability in actual application. Utility model content

[0005] The utility model aims at providing a cable joint explosion-proof box with fire extinguishing and heat dissipation function, which has active fire extinguishing and heat dissipation function, effectively protects the cable joint and ensures the safety of the surrounding area, has long service life and high reliability.

[0006] To solve the above technical problems, the utility model provides technical schemes as follows: A cable joint explosion-proof box with fire extinguishing and heat dissipation functions, comprising a first base, an explosion-proof box capable of covering the end of the first base is arranged on one end of the first base, a filler is filled in the explosion-proof box, the filler is internally provided with a first filler with a fire extinguishing function and / or a second filler with a heat conduction function. The first base is a cable, and of course, it can also be other power line equipment. The utility model plays an external protection role on the joint part of the end of the first base through the explosion-proof shell, and the electric arc generated by the joint part can be blocked by the explosion-proof shell to solve the problem of external environment fire protection of the joint. Further, the filler placed in the explosion-proof shell can actively extinguish fire and conduct heat. Specifically, the first filler is a fire extinguishing capsule, and the second filler is heat conducting ceramic powder. After the perfluorohexanone fire extinguishing capsule is mixed with sealant, the sealant also contains heat conducting ceramic powder. The sealant has an insulating effect and is poured into the glass steel or ceramic shell at the joint, which can effectively conduct the heat generated by the cable joint and ensure temperature stability. When a fire occurs in the cable, the temperature can be reduced to extinguish the fire. Compared with the flame-retardant material in the prior art, the present scheme can more effectively prevent cable fires and improve the safety of power systems.

[0007] According to an embodiment of the utility model, the explosion-proof box comprises a main shell and a vice shell arranged on one side of the main shell, a first chamber is formed between the main shell and the vice shell, and the end of the first base can pass through the first chamber formed by the main shell and the vice shell. The utility model forms the first chamber by using the main and vice shells. In this way, the explosion-proof box is convenient to disassemble and install during the installation of the cable joint protection, the first chamber inside can be observed by removing the main shell or the vice shell, and compared with the integrated explosion-proof box, the production difficulty of the explosion-proof box and the maintenance cost of the explosion-proof box can be reduced.

[0008] According to an embodiment of the utility model, a first hole is arranged on the main shell and / or the vice shell, a sealing cover capable of blocking the first hole is arranged on the first hole, and the number of the first holes can be one or more. The diameter of the first hole can be adjusted according to the size of the main shell and / or the vice shell, or can be selected according to the first chamber or the actual explosion-proof shell application scene. If there are multiple first holes, the sizes of the first holes can be the same or different, and the arrangement angle position can be selected according to the actual explosion-proof shell application scene.

[0009] By arranging the first hole on the main shell and / or the vice shell, the filler can be filled in the internal space of the explosion-proof shell through the first hole, and then the sealing cover is used for sealing, so that the effective sealing performance and the insulation performance of the product after application are ensured. In addition, for the explosion of the cable joint, the sealing cover can be relatively impacted and popped out to release energy, so that the probability of damage of the explosion-proof shell caused by explosion is reduced, and the safety of the environment around the explosion-proof shell is ensured.

[0010] According to an embodiment of the utility model, the main shell and the auxiliary shell have cavities accommodating the first base body, the main shell and the auxiliary shell at the cavity edge are respectively provided with corresponding extension strips, the extension strips on the main shell and the auxiliary shell are adjacently arranged and provided with position corresponding second holes, the extension strips on the main shell and the auxiliary shell are connected through fasteners such as screws or bolt nuts cooperating with the second holes, so that the two adjacent extension strips are tightly connected, and the leakage of the internal filling body is avoided.

[0011] According to an embodiment of the utility model, the first filling piece is a fire extinguishing capsule, the first filling piece is a perfluorohexanone capsule, as technical consistency, it also includes capsules made of other fluorine-containing chemicals, and also includes solid fire extinguishing microspheres.

[0012] According to an embodiment of the utility model, the second filling piece is a heat-conducting ceramic powder, the second filling piece is a heat-conducting ceramic powder, as technical consistency, it also includes heat-conducting metal powder, graphite powder and other heat-conducting powders.

[0013] The effective way of the effective substance in the explosion-proof box is blending, as technical consistency, it also includes fire extinguishing and heat-conducting substances in the form of coating, bonding and pasting, and the fire extinguishing and heat-conducting substances are not only limited to be used with sealing glue, but also can be used with other substances with sealing effect.

[0014] According to an embodiment of the utility model, the main shell has a first main shell segment, a second main shell segment and a third main shell segment capable of covering the first base body, the first main shell segment has a spacing distance from the first base body, the third main shell segment abuts against the surface of the first base body, the second main shell segment has a spacing distance from the first base body, one end of the second main shell segment is connected with the first main shell segment, and the other end is connected with the third main shell segment. The first main shell segment and the second main shell segment of the main shell ensure the empty space between the main shell and the first base body, so that the filling body can be accommodated to ensure effective filling protection of the cable joint outside and filling of the local cable outside the cable joint, so that when a fire or an arc is caused, the internal fire extinguishing substance of the capsule is released by gasification due to the temperature rise of the cable, which can efficiently block oxygen and reduce the temperature of the fire source, and quickly extinguish the fire.

[0015] According to one embodiment of the utility model, the vice shell has the first vice shell section, the second vice shell section and the third vice shell section that can cover the first base body, the first vice shell section and the first base body have the interval distance, the third vice shell section and the first base body surface abut, the second vice shell section and the first base body have the interval distance, one end of the second vice shell section is connected with the first vice shell section, and the other end is connected with the third vice shell section. The first vice shell section and the second vice shell section of the vice shell ensure the empty space between the vice shell and the first base body, so that the filling body can be accommodated to ensure the effective filling protection of the cable joint outside and the filling of the local cable outside at the cable joint, so that when the fire or arc is caused, the capsule inside extinguishing material is released by the rising temperature of the cable, which can efficiently block oxygen and reduce the temperature of the fire source to quickly extinguish the fire.

[0016] According to one embodiment of the utility model, the annular convex ring is arranged on the surface of the explosion-proof box to enhance the structural strength of the explosion-proof box.

[0017] According to one embodiment of the utility model, the filling body is filled in the space between the first base body and the explosion-proof box to ensure the filling and fire extinguishing protection and heat conduction of the cable end and the joint.

[0018] 1. The fire extinguishing capsule is a regular spherical body with a core-shell structure and containing perfluorohexone. Perfluorohexone is a special fluorine-containing compound with excellent barrier property and thermal stability, which can effectively isolate oxygen and reduce flame temperature in a fire, thereby inhibiting the spread of the fire, and is widely used in various fireproof equipment. Perfluorohexone can be coated to form a millimeter-level capsule. 2. The heat-conducting material used is heat-conducting ceramic powder, which has high thermal conductivity, insulation, non-combustibility and chemical inertness, and good compatibility with various sealants. 3. The explosion-proof box shell is made of glass steel, ceramic and other materials; and the sealant is made of silicone, phenolic resin, fire-retardant mortar and the like. 4. The technical solution mixes the fire extinguishing capsule, heat-conducting ceramic powder and sealant, and then pours them into the shell at the joint. The diameter of the fire extinguishing capsule added to the sealant is 1mm-2mm, the addition content is 20%-50%, and slow stirring and dispersion are performed; the heat-conducting ceramic powder with a mesh size of 300-500 is added to the sealant, the addition content is 15%-40%, and high-speed stirring and dispersion are performed. The dispersion degree of the added substances is determined by the dispersion equipment, dispersion speed and dispersion time, and the related optimal equipment and parameters need to be determined, and the diameter of the added substances is selected according to the application scene, for example, the diameter of the fire extinguishing capsule is not limited to 1mm-2mm. 5. The heat-conducting ceramic powder is added first, and then the fire extinguishing capsule is added after sufficient dispersion. 6. The installation of the explosion-proof box is similar to that of the conventional product, the mixed sealant is poured from the glue injection hole after the shell is fixed, and the sealant is completely cured after 24 hours.

[0019] A cable joint explosion-proof box with fire extinguishing and heat dissipation functions has the following installation steps:

[0020] Step one: select the length of 1000mm, diameter 160mm, thickness 8mm glass steel material explosion-proof box shell, installed in the cable joint, using two ends winding waterproof insulation sealing tape;

[0021] Step two: select the shore hardness of 30 (shore A), viscosity of 5000cps liquid two-component addition type silicone rubber, A, B component 1000g each; select the particle size 1.0mm self-produced fire extinguishing capsule, perfluorohexanone content is more than 70%, trigger temperature is 150 DEG C; select 600 mesh ceramic heat conducting powder, thermal conductivity is 180W / m·K;

[0022] Step three: add 800g heat conducting ceramic powder in sealing glue A component, adopt disc type stirring paddle, mix and disperse according to the speed 500rpm, stirring time is 10min;Then all B component is added, continue to stir 5min;Then add 1200g fire extinguishing capsule, stir 5min according to the speed 200rpm, complete mixing;

[0023] Step four: the mixed sealing glue is filled into the shell through the glue injection hole, pay attention to exhaust when filling, cover the sealing cover after filling, and stand for curing;

[0024] Step five: the completed product is placed in a high temperature environment for testing. The temperature of the high temperature environment is set to 150 DEG C, and the test time is 1 hour. The results show that the mixture releases a large amount of fire extinguishing agent rapidly under high temperature. The completed product is placed in an 80 DEG C environment for 24 hours. The results show that the product remains stable at this temperature without any abnormal phenomena.

[0025] The explosion-proof box structure of the utility model can be a rotary body structure or a non-rotary body structure.

[0026] The utility model discloses a cable joint explosion -proof box with fire -extinguishing and heat -dissipating functions, which belongs to the technical field of cable joint explosion -proof boxes. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0028] Fig. 1 It is a schematic diagram of the utility model discloses a cable joint explosion -proof box with fire -extinguishing and heat -dissipating functions.

[0029] Fig. 2 It is a sectional view of the utility model discloses a cable joint explosion -proof box with fire -extinguishing and heat -dissipating functions.

[0030] Fig. 3 It is a partial schematic diagram of the utility model discloses a cable joint explosion -proof box with fire -extinguishing and heat -dissipating functions.

[0031] The reference signs are explained as follows: 10. first base piece; 11. first chamber; 20. main shell; 21. first hole body; 22. first main shell segment; 23. third main shell segment; 24. second main shell segment; 30. auxiliary shell; 31. first auxiliary shell segment; 32. second auxiliary shell segment; 33. third auxiliary shell segment; 40. extension strip; 41. second hole body; 50. sealing cover; 60. filling body; 70. convex ring. DETAILED DESCRIPTION

[0032] 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.

[0033] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Example 1

[0035] like Figs. 1-3 As shown, this utility model provides an explosion-proof cable connector box with fire extinguishing and heat dissipation functions. The explosion-proof cable connector box with fire extinguishing and heat dissipation functions includes a first base 10, with an explosion-proof box covering one end of the first base 10. The explosion-proof box is filled with a filler 60, which contains a first filler with fire extinguishing function and / or a second filler with heat conduction function. The first substrate 10 is a cable, but it can also be other power line equipment. This invention provides external protection for the joint portion at the end of the first substrate 10 through an explosion-proof shell. The explosion-proof shell can block electric arcs generated at the joint, thus addressing the fire prevention issue in the external environment. Furthermore, the use of a filler 60 inside the explosion-proof shell enables active fire extinguishing and heat conduction. Specifically, the first filler is a fire extinguishing capsule, and the second filler is thermally conductive ceramic powder. The perfluorohexanone fire extinguishing capsule is mixed with sealant, which also contains thermally conductive ceramic powder. The sealant has an insulating effect. When poured into the fiberglass or ceramic shell at the joint, it effectively conducts the heat generated by the cable joint, ensuring temperature stability. When a cable fire occurs, it can cool and extinguish the fire. Compared to existing flame-retardant materials, this solution can more effectively prevent cable fires and improve the safety of the power system.

[0036] The explosion-proof box comprises a main shell 20, one side of the main shell 20 is provided with a matched auxiliary shell 30, a first cavity 11 is formed between the main shell 20 and the auxiliary shell 30, and the end of the first base 10 can pass through the first cavity 11 formed by the main shell 20 and the auxiliary shell 30, the first cavity 11 is formed by the main shell and the auxiliary shell, and the installation and dismounting of the explosion-proof box are convenient during the installation of the cable joint protection, the internal first cavity 11 can be observed by dismounting the main shell 20 or the auxiliary shell 30, and the production difficulty of the explosion-proof box and the maintenance cost of the explosion-proof box can be reduced compared with the integrated explosion-proof box.

[0037] The main shell 20 and / or the auxiliary shell 30 is provided with a first hole body 21, the first hole body 21 is provided with a sealing cover 50 capable of sealing the first hole body 21, the number of the first hole body 21 can be one or multiple, meanwhile, the diameter of the first hole body 21 can be adjusted according to the size of the main shell 20 and / or the auxiliary shell 30, and the first cavity 11 can be selected, or the first hole body 21 can be selected according to the actual explosion-proof shell application scene and other factors, if the first hole body 21 is multiple, the size of the first hole body 21 can be the same or different, and the arrangement angle position can be selected according to the actual explosion-proof shell application scene and other factors.

[0038] The first hole body 21 is arranged on the main shell 20 and / or the auxiliary shell 30, the internal space of the explosion-proof shell can be filled with the filling body 60 through the first hole body 21, and then the sealing cover 50 is used for sealing, so that the effective sealing performance and the insulation performance after the product is applied are ensured, in addition, the sealing cover 50 can be relatively impacted and popped out to release energy when explosion occurs at the cable joint, the probability of damage of the explosion-proof shell caused by explosion impact is reduced, and the safety of the environment around the explosion-proof shell is ensured.

[0039] The main shell 20 and the auxiliary shell 30 respectively have a recess accommodating the first base 10, the main shell 20 and the auxiliary shell 30 on the edge of the recess are respectively provided with corresponding extension strips 40, the extension strips 40 on the main shell 20 and the auxiliary shell 30 are adjacently arranged and provided with position-corresponding second hole bodies 41, and the extension strips 40 on the main shell 20 and the auxiliary shell 30 are tightly connected through fasteners such as screws or bolts and nuts and the second hole bodies 41, so that the leakage of the internal filling body 60 is avoided.

[0040] The first filling piece is a fire extinguishing capsule, the first filling piece is a perfluorohexanone capsule, as technical consistency, other capsules made of fluorine-containing chemicals are also included, and solid fire extinguishing microspheres are also included.

[0041] The second filling piece is a heat-conducting ceramic powder, the second filling piece is a heat-conducting ceramic powder, as technical consistency, heat-conducting metal powder, graphite powder and other heat-conducting powders should also be included.

[0042] The effective substance in the explosion-proof box is blended, and as technical consistency, the fire extinguishing and heat conducting substance is also coated, bonded, attached and the like, and the fire extinguishing and heat conducting substance is not limited to be used with the sealing glue, but can be used with other substances with sealing effect.

[0043] The explosion-proof box is provided with an annular convex ring 70 on the surface, which is used for enhancing the structural strength of the explosion-proof box.

[0044] The filling body 60 is filled in the space between the first base body 10 and the explosion-proof box, and ensures the filling and fire extinguishing protection and heat conduction of the cable end and the joint.

[0045] The fire extinguishing capsule is a regular spherical capsule with a core-shell structure and containing perfluorohexone. The perfluorohexone is a special fluorine-containing compound with excellent barrier property and thermal stability, which can effectively isolate oxygen and reduce the flame temperature in the fire, so as to inhibit the spread of the fire, and is widely used in various fireproof equipment. The perfluorohexone can be coated to form a millimeter-level capsule. The heat conducting substance is heat conducting ceramic powder, which has high heat conductivity, insulation, non-combustibility and chemical inertness, and has good compatibility with various sealing glues. The explosion-proof box shell is made of glass steel, ceramic and the like, and the sealing glue is made of silica gel, phenolic resin, fire-retardant mortar and the like. The fire extinguishing capsule, the heat conducting ceramic powder and the sealing glue are mixed, and then poured into the shell at the joint. The diameter of the fire extinguishing capsule is 1mm-2mm, the adding content in the sealing glue is 20%-50%, and the slow stirring and dispersion are carried out. The heat conducting ceramic powder of 300-500 meshes is added into the sealing glue, the adding content is 15%-40%, and the high-speed stirring and dispersion are carried out. The dispersion degree of the added substance is determined by the dispersion equipment, dispersion speed and dispersion time, and the related optimal equipment and parameters need to be determined, and the diameter of the added substance is selected according to the application scene, for example, the diameter of the fire extinguishing capsule is not limited to 1mm-2mm. The adding sequence is that the heat conducting ceramic powder is added first, and then the fire extinguishing capsule is added after the heat conducting ceramic powder is fully dispersed. The installation of the explosion-proof box is similar to that of the conventional product, the mixed sealing glue is poured from the glue pouring hole after the shell is fixed, and the sealing glue is completely solidified after 24 hours.

[0046] 1、The device has an automatic fire extinguishing function. By adding a fire extinguishing capsule in the sealing glue of the cable joint explosion-proof box, when a fire or an electric arc is caused, the temperature of the cable rises to make the fire extinguishing substance in the capsule vaporize and release, which can effectively block oxygen and reduce the temperature of the fire source, so as to quickly extinguish the fire.

[0047] 2、The device has excellent heat dissipation and heat absorption functions. By adding a heat conducting substance in the sealing glue and the shell of the cable joint explosion-proof box, the heat conductivity of the material is effectively improved, so that the heating temperature of the cable is reduced. In addition, the fire extinguishing capsule added in the sealing glue also has a certain heat absorption function, which can effectively prevent the heating temperature from rising sharply.

[0048] 3、In the addition of fire extinguishing capsules and heat conducting substances, the performance of the explosion-proof box related materials is not affected. The technical solution selects appropriate materials, particle size and mixing process, so that the insulation, sealing, water resistance, aging resistance and other properties of the product are not significantly reduced. Especially the mixing of high content of fire extinguishing capsules and heat conducting agents does not reduce the insulation of the sealing glue, which has high technical difficulty. In addition, the added substances will not affect the product construction and installation.

[0049] Due to the advancement of the technical solution, in the field of electric power construction technology and explosion-proof electrical equipment, first of all, in the field of electric power construction technology, the technical solution can effectively prevent cable fire and optimize heat dissipation balance by using a composite fire extinguishing and heat dissipation explosion-proof box, thereby improving the safety of electric power engineering. Secondly, in the field of explosion-proof electrical equipment, the technical solution can provide a new type of explosion-proof electrical equipment; since the product of the technical solution has good insulation, sealing, and fireproof and heat conducting functions, it can be applied to various explosion-proof electrical equipment, such as explosion-proof switch, explosion-proof socket, etc., thereby improving the safety of electrical explosion-proof equipment.

[0050] Example 2:

[0051] A cable joint explosion-proof box with fire extinguishing and heat dissipation functions and its installation steps:

[0052] Step one: select a glass steel material explosion-proof box shell with a length of 1000mm, a diameter of 160mm and a thickness of 8mm, install it at the cable joint, and use waterproof insulation sealing tape at both ends;

[0053] Step two: select a liquid two-component addition type silicone rubber with a shore hardness of 30 (shore A) and a viscosity of 5000cps, 1000g of A and B components respectively; select self-produced fire extinguishing capsules with a particle size of 1.0mm, the content of perfluorohexanone is more than 70%, and the trigger temperature is 150℃; select 600 mesh ceramic heat conducting powder with a heat conductivity coefficient of 180W / m·K;

[0054] Step three: add 800g of heat conducting ceramic powder to the A component of the sealing glue, use a disc type stirring paddle, mix and disperse at a speed of 500rpm, and stir for 10min; then add all the B component and continue to stir for 5min; then add 1200g of fire extinguishing capsules and stir at a speed of 200rpm for 5min to complete the mixing;

[0055] Step four: pour the mixed sealing glue into the shell through the glue injection hole, pay attention to exhaust during pouring, cover the sealing cover after filling, and let it stand and solidify;

[0056] Step five: the finished product is placed in a high temperature environment for testing. The temperature of the high temperature environment is set to 150°C, and the test time is 1 hour. The results show that the mixture releases a large amount of fire extinguishing agent at high temperature; the finished product is placed in an environment of 80°C, and the test time is 24 hours. The results show that the product remains stable at this temperature and does not exhibit any abnormal phenomena.

[0057] Example 3:

[0058] The first filler is a fire extinguishing capsule, the first filler is a perfluorohexanone capsule, as technical consistency, it also includes capsules made of other fluorine-containing chemicals, and also includes solid fire extinguishing microspheres.

[0059] The second filler is a heat-conducting ceramic powder, the second filler is a heat-conducting ceramic powder, as technical consistency, it should also include heat-conducting metal powder, graphite powder and other heat-conducting powders.

[0060] The effective way of the effective substance in the explosion-proof box is blending, as technical consistency, it should also include fire extinguishing and heat-conducting substances in the form of coating, bonding, and fitting, and fire extinguishing and heat-conducting substances are not limited to being used with sealing glue, but can also be used with other substances with sealing effect.

[0061] Example 4:

[0062] See the attached Fig. 3 As shown in the attached figure, the main shell 20 has a first main shell segment 22 capable of covering the first base body 10, a second main shell segment 24 and a third main shell segment 23, the first main shell segment 22 and the first base body 10 have a spacing distance, the third main shell segment 23 and the surface of the first base body 10 are in abutment, the second main shell segment 24 and the first base body 10 have a spacing distance, one end of the second main shell segment 24 is connected with the first main shell segment 22, and the other end is connected with the third main shell segment 23. The first main shell segment 22 and the second main shell segment 24 of the main shell 20 ensure the spacing space between the main shell 20 and the first base body 10, so as to accommodate the filler 60 for ensuring effective filling and protection of the outside of the cable joint, and filling the outside of the local cable at the cable joint. Thus, when a fire or an arc is ignited, the temperature of the cable rises to cause the fire extinguishing substance inside the capsule to vaporize and release, effectively blocking oxygen and reducing the temperature of the fire source, quickly extinguishing the fire.

[0063] The sub-housing 30 has a first sub-housing segment 31 capable of covering the first base body 10, a second sub-housing segment 32 and a third sub-housing segment 33, the first sub-housing segment 31 has a spacing distance with the first base body 10, the third sub-housing segment 33 abuts against the surface of the first base body 10, the second sub-housing segment 32 has a spacing distance with the first base body 10, one end of the second sub-housing segment 32 is connected with the first sub-housing segment 31, and the other end is connected with the third sub-housing segment 33. The spacing space between the sub-housing 30 and the first base body 10 is ensured by the first sub-housing segment 31 and the second sub-housing segment 32 of the sub-housing 30, so that the filling body 60 can be accommodated to ensure effective filling protection for the outside of the cable joint and filling for the outside of the local cable at the cable joint, so that when a fire or an arc is caused, the temperature of the cable rises to make the extinguishing material in the capsule vaporize and release, which can effectively block oxygen and reduce the temperature of the fire source, and quickly extinguish the fire.

[0064] The explosion-proof box structure composed of the sub-housing 30 and the main housing 20 can be a rotary body structure or a non-rotary body structure.

[0065] The above-described embodiments and / or implementations are only used to illustrate the preferred embodiments and / or implementations of the present application, and do not limit the implementation of the present application in any form. Any person skilled in the art can make some changes or modifications without departing from the scope of the technical means disclosed in the present application, and other equivalent embodiments can be made, but should be considered as the same technology or embodiment as the present application.

[0066] The principles and implementations of the present application are described by using specific examples. The above description of the embodiments is only used to help understand the method and its core idea. The above description is only the preferred implementation of the present application. It should be pointed out that due to the limitation of language expression, there are infinite specific structures. For ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principles of the present application, and the above technical features can be combined in an appropriate way. These improvements, refinements, changes or combinations, or the application of the present application without improvement to other occasions, should be considered as the protection scope of the present application.

Claims

1. A cable joint explosion-proof box with fire extinguishing and heat dissipation functions, comprising a first base piece (10), an explosion-proof box capable of covering the end of the first base piece (10) is arranged on one end of the first base piece (10), characterized in that: The explosion-proof box is filled with a filling body (60), the filling body (60) is internally provided with a first filling piece with a fire extinguishing function and / or a second filling piece with a heat conduction function.

2. The cable joint explosion-proof box with fire extinguishing and heat dissipating functions according to claim 1, characterized in that: The explosion-proof box comprises a main shell (20), one side of the main shell (20) is provided with a secondary shell (30) matched therewith, a first cavity (11) is formed between the main shell (20) and the secondary shell (30), and the end of the first base body (10) can pass through the first cavity (11) formed by the main shell (20) and the secondary shell (30).

3. The cable joint explosion-proof box with fire extinguishing and heat dissipating functions according to claim 2, characterized in that: The main shell (20) and / or the secondary shell (30) is provided with a first hole body (21), and the first hole body (21) is provided with a sealing cover (50) capable of sealing the first hole body (21).

4. The cable joint explosion-proof box with fire extinguishing and heat dissipating functions according to claim 2, characterized in that: The main shell (20) and the secondary shell (30) are respectively provided with a recess cavity for accommodating the first base body (10), and the main shell (20) and the secondary shell (30) on the edge of the recess cavity are respectively provided with corresponding extension strips (40), the extension strips (40) on the main shell (20) and the secondary shell (30) are adjacently arranged and provided with position corresponding second hole bodies (41).

5. The cable joint explosion-proof box with fire extinguishing and heat dissipating functions according to claim 1 or 2, characterized in that: The first filling piece is a fire extinguishing capsule.

6. The cable joint explosion-proof box with fire extinguishing and heat dissipating functions according to claim 1 or 2, characterized in that: The second filling piece is a heat conduction ceramic powder.

7. The cable joint explosion-proof box with fire extinguishing and heat dissipating functions according to claim 2, characterized in that: The main shell (20) is provided with a first main shell segment (22), a second main shell segment (24) and a third main shell segment (23) capable of covering the first base body (10), the first main shell segment (22) has a spacing distance from the first base body (10), the third main shell segment (23) abuts against the surface of the first base body (10), the second main shell segment (24) has a spacing distance from the first base body (10), one end of the second main shell segment (24) is connected with the first main shell segment (22), and the other end is connected with the third main shell segment (23).

8. The cable joint explosion-proof box with fire extinguishing and heat dissipating functions according to claim 2, characterized in that: The secondary shell (30) is provided with a first secondary shell segment (31), a second secondary shell segment (32) and a third secondary shell segment (33) capable of covering the first base body (10), the first secondary shell segment (31) has a spacing distance from the first base body (10), the third secondary shell segment (33) abuts against the surface of the first base body (10), the second secondary shell segment (32) has a spacing distance from the first base body (10), one end of the second secondary shell segment (32) is connected with the first secondary shell segment (31), and the other end is connected with the third secondary shell segment (33).

9. The cable joint explosion-proof box with fire extinguishing and heat dissipating functions according to claim 2, characterized in that: The surface of the explosion-proof box is provided with an annular convex ring (70).

10. The cable joint explosion-proof box with fire extinguishing and heat dissipating functions according to claim 2, characterized in that: The filling body (60) is filled in the space between the first base body (10) and the explosion-proof box.

Images