Fireproof method and explosion-proof device for cable intermediate joint

Abstract

The invention relates to the technical field of cable intermediate joint explosion prevention, in particular to a cable intermediate joint fireproof method and explosion-proof device.The cable intermediate joint fireproof method and explosion-proof device comprises a supporting component which comprises a mounting support, a support arranged on the lower side of the mounting support, a supporting assembly arranged on the lower side of the mounting support and an adjusting assembly arranged on the side wall of the supporting assembly; an explosion-proof part, comprising an anti-explosion assembly arranged on the upper side of a mounting support, a connecting assembly arranged on the side wall of the anti-explosion assembly, a fire extinguishing bomb arranged in the anti-explosion assembly, a first gear ring assembly arranged on the outer surface of the fire extinguishing bomb and two second gear ring assemblies arranged on the outer surface of the fire extinguishing bomb. According to the cable intermediate joint, fire can be extinguished in time when the cable intermediate joint is on fire, fire spreading is effectively prevented, and shock waves generated by explosion can be absorbed and buffered.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proofing of cable intermediate joints, in particular to a fire-proofing method and an explosion-proofing device for cable intermediate joints. Background Art

[0002] The core function of the cable explosion-proof box is to isolate the explosive environment and prevent the internal electrical equipment from causing an explosion. In situations where explosions may occur, explosion-proof boxes can effectively block factors that induce explosions, such as open flames, high temperatures, and static electricity, to ensure the integrity and reliability of the cable system. At the same time, explosion-proof boxes also have multiple functions such as dustproof, waterproof, and anti-corrosion, effectively protecting cables from damage by the external environment. Therefore, its safety is directly related to the reliability of power supply and the life safety of operation and maintenance personnel. The existing intermediate joint explosion-proof shell adopts a fully sealed installation. The incremental part can be installed in conjunction with the intermediate joint, and the stock part cannot be installed due to model mismatch and price reasons. There are many fire and explosion-proof measures at the intermediate joints of the existing cable lines, and the hidden dangers are large. In addition, the construction years are long, and effective control measures cannot be used to solve the hidden dangers due to site, environment and other reasons. The cable joint is the weak link in the cable line. Due to the problems of contact resistance and reduced insulation strength at the joint, partial discharge, insulation breakdown and other faults are very likely to occur, especially at the intermediate joints of the existing high-voltage cables. Due to the long age and lax construction supervision, accidents are more likely to occur. Once the intermediate joint fails, it will not only cause large-scale power outages, but also may cause serious consequences such as fire and explosion, threatening the lives of nearby personnel. Summary of the invention

[0003] In view of the above problems existing in the existing cable explosion-proof box, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a fire prevention method and explosion-proof device for a cable intermediate joint.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: including first placing a cable intermediate joint mounting bracket at a suitable position; placing an explosion-proof mechanism on the mounting bracket; and installing the cable intermediate joint in the explosion-proof mechanism.

[0006] As a preferred solution of the cable intermediate joint fire prevention method and explosion-proof device of the present invention, when the cable intermediate joint catches fire, the fire extinguishing bomb in the explosion-proof mechanism is triggered by heat and automatically extinguishes the fire, thereby achieving the purpose of fire prevention.

[0007] As a preferred solution of the fire prevention method and explosion-proof device of the cable intermediate joint of the present invention, it includes: a supporting component, including a mounting bracket, a support arranged on the lower side of the mounting bracket, a supporting assembly arranged on the lower side of the mounting bracket, and an adjusting assembly arranged on the side wall of the supporting assembly; an explosion-proof part, including an explosion-proof assembly arranged on the upper side of the mounting bracket, a connecting assembly arranged on the side wall of the explosion-proof assembly, a fire extinguishing bomb arranged in the explosion-proof assembly, a first toothed ring assembly arranged on the outer surface of the fire extinguishing bomb, two second toothed ring assemblies arranged on the outer surface of the fire extinguishing bomb, and a heat shrinkable net assembly arranged on the side wall of the first toothed ring assembly.

[0008] As a preferred solution of the cable intermediate joint fire prevention method and explosion-proof device of the present invention, wherein: the support assembly includes a support leg arranged on the lower side of the support, and a slide groove is opened on the upper side of the support leg; wherein the support is slidably connected to the slide groove.

[0009] As a preferred solution of the cable intermediate joint fire prevention method and explosion-proof device of the present invention, the adjustment component includes a threaded groove arranged on the side wall of the support, and the side wall of the support leg is threadedly connected with an adjustment knob; wherein the adjustment knob is threadedly connected to the threaded groove.

[0010] As a preferred solution of the cable intermediate joint fire prevention method and explosion-proof device of the present invention, the explosion-proof component includes a frame arranged on the upper side of the mounting bracket, a first explosion-proof glass is placed in the mounting groove of the frame, and a fixing groove is opened on the side wall of the frame.

[0011] As a preferred solution of the cable intermediate joint fire prevention method and explosion-proof device of the present invention, the connecting component includes a connecting groove arranged on the frame, a second explosion-proof glass is placed on the inner side wall of the connecting groove, a third explosion-proof glass is placed on the inner side wall of the connecting groove, and the side walls of the first explosion-proof glass and the second explosion-proof glass are both provided with grooves.

[0012] As a preferred solution of the cable intermediate joint fire prevention method and explosion-proof device of the present invention, the first gear ring assembly includes a first annular seat arranged on the outer surface of the fire extinguishing bomb, and the upper and lower sides of the first annular seat are respectively fixedly connected with upper sharp teeth and lower sharp teeth.

[0013] As a preferred solution of the cable intermediate joint fire prevention method and explosion-proof device of the present invention, the second gear ring assembly includes a second annular seat arranged on the outer surface of the fire extinguishing bomb, the outer surface of the second annular seat is fixedly connected with outer sharp teeth, and the inner side wall of the second annular seat is fixedly connected with inner sharp teeth.

[0014] As a preferred solution of the cable intermediate joint fire prevention method and explosion-proof device of the present invention, the heat shrink net assembly includes an upper heat shrink net arranged on the upper side of the first annular seat, and a lower heat shrink net is fixedly connected to the lower side of the second annular seat.

[0015] The beneficial effects of the fire prevention method and explosion-proof device of the cable intermediate joint of the present invention are as follows: by providing the supporting component 100 and the explosion-proof component 201, the fire can be extinguished in time when the cable intermediate joint is on fire, effectively preventing the fire from spreading, and absorbing and buffering the shock wave generated by the explosion, thereby solving the problems existing in the existing cable explosion-proof box and achieving the fire prevention and explosion-proof effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is an overall schematic diagram of the fire prevention method and explosion-proof device of the cable intermediate joint.

[0018] Figure 2 It is an overall schematic diagram of the fire protection method for the cable intermediate joint and the supporting components of the explosion-proof device.

[0019] Figure 3 It is an overall schematic diagram of the fire prevention method of the cable intermediate joint and the explosion-proof component of the explosion-proof device.

[0020] Figure 4 It is an overall schematic diagram of the fire prevention method of the cable intermediate joint and the explosion-proof components of the explosion-proof device.

[0021] Figure 5 It is a schematic diagram of the partial structural connection of the fire protection method and explosion-proof device of the cable intermediate joint.

[0022] In the figure: 100, support component; 101, mounting bracket; 102, support; 103, support assembly; 103a, support leg; 103b, slide groove; 104, adjustment assembly; 104a, threaded groove; 104b, adjustment knob; 200, explosion-proof component; 201, explosion-proof assembly; 201a, frame; 201b, first explosion-proof glass; 201c, fixing groove; 202, connecting assembly; 202a, connecting groove; 2 02b, second explosion-proof glass; 202c, third explosion-proof glass; 202d, groove; 203, fire extinguishing bomb; 204, first tooth ring assembly; 204a, first annular seat; 204b, upper sharp teeth; 204c, lower sharp teeth; 205, second tooth ring assembly; 205a, second annular seat; 205b, outer sharp teeth; 205c, inner sharp teeth; 206, heat shrink net assembly; 206a, upper heat shrink net; 206b, lower heat shrink net. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Example 1

[0027] Reference Figure 1 to Figure 5 , which is the first embodiment of the present invention, provides a cable intermediate joint fire prevention method, which includes first placing the cable intermediate joint mounting bracket 101 at a suitable position; placing the explosion-proof mechanism M on the mounting bracket 101; installing the cable intermediate joint in the explosion-proof mechanism M; when the cable intermediate joint catches fire, the fire extinguishing bomb 203 in the explosion-proof mechanism M is triggered by heat and automatically extinguishes the fire, thereby achieving the purpose of fire prevention.

[0028] Among them, the installation bracket 101 is 3m long and 50cm wide. When a fire or short-circuit explosion occurs at the middle joint of the cable, the explosion-proof mechanism M can prevent the fire from spreading and absorb the shock wave to ensure the safety of the operation and maintenance personnel and the surrounding equipment. When the middle joint of the cable burns, the internal fire extinguishing bomb 203 can be automatically triggered to extinguish the fire. It can be quickly disassembled and installed on site without affecting the normal operation of the cable.

[0029] Example 2

[0030] Reference Figure 1 to Figure 5 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an explosion-proof device for a cable intermediate joint, which includes a supporting component 100, including a mounting bracket 101, a support 102 arranged on the lower side of the mounting bracket 101, a supporting assembly 103 arranged on the lower side of the mounting bracket 101, and an adjusting assembly 104 arranged on the side wall of the supporting assembly 103; an explosion-proof part, including an explosion-proof assembly 201 arranged on the upper side of the mounting bracket 101, a connecting assembly 202 arranged on the side wall of the explosion-proof assembly 201, a fire extinguishing bomb 203 arranged in the explosion-proof assembly 201, a first toothed ring assembly 204 arranged on the outer surface of the fire extinguishing bomb 203, two second toothed ring assemblies 205 arranged on the outer surface of the fire extinguishing bomb 203, and a heat shrinkable net assembly 206 arranged on the side wall of the first toothed ring assembly 204.

[0031] Specifically, four supports 102 are provided, and the four supports 102 are distributed in a rectangular array. The supports 102 are fixedly connected to the mounting bracket 101, and the two second gear ring assemblies 205 are symmetrically arranged.

[0032] Furthermore, the support assembly 103 includes a support leg 103a arranged on the lower side of the support 102, and a slide groove 103b is opened on the upper side of the support leg 103a; wherein the support 102 is slidably connected with the slide groove 103b; the adjustment assembly 104 includes a threaded groove 104a arranged on the side wall of the support 102, and the side wall of the support leg 103a is threadedly connected with an adjustment knob 104b; wherein the adjustment knob 104b is threadedly connected to the threaded groove 104a; the explosion-proof assembly 201 includes a frame 201a arranged on the upper side of the mounting bracket 101, a first explosion-proof glass 201b is placed in the mounting groove of the frame 201a, and a fixing groove 201c is opened on the side wall of the frame 201a.

[0033] Among them, there are four support components 103, and the four support components 103 are distributed in a rectangular array, there are multiple thread grooves 104a, and the multiple thread grooves 104a are equidistantly distributed. Through the thread grooves 104a, the adjustment knobs 104b and the slide grooves 103b, the support legs 103a can be adjusted up and down according to the actual situation to make the placement of the entire device more stable. The frame 201a is 3m long, 50cm wide and 50cm high. The frame 201a is made of titanium alloy, the explosion-proof glass is 30mm, and bullet-proof glass is used. The entire box is transparent It is convenient for operation and maintenance personnel to observe that a plurality of fixing grooves 201c are provided, and bolts are fixedly connected to the first explosion-proof glass 201b and the frame 201a through the fixing grooves 201c, and bolts are fixedly connected to the second bullet-proof glass and the third bullet-proof glass and the frame 201a through the fixing grooves 201c, so as to realize the detachable connection of the first explosion-proof glass 201b, the second bullet-proof glass and the third bullet-proof glass, and can be quickly disassembled and installed on site without affecting the normal operation of the cable. There are 12 explosion-proof glasses, and the 12 first explosion-proof glasses 201b are respectively located in 12 installation grooves on the frame 201a. Figure 3 As shown, 16 fire extinguishing bombs 203 are provided, and the 16 fire extinguishing bombs 203 are evenly distributed in the frame 201a, and the material of the fire extinguishing bombs 203 used is elastic material.

[0034] Furthermore, the connecting assembly 202 includes a connecting groove 202a provided on the frame 201a, a second explosion-proof glass 202b is placed on the inner wall of the connecting groove 202a, a third explosion-proof glass 202c is placed on the inner wall of the connecting groove 202a, and a groove 202d is formed on the side walls of the first explosion-proof glass 201b and the second explosion-proof glass 202b; the first gear ring assembly 204 includes a first annular seat 204a provided on the outer surface of the fire extinguishing bomb 203, and the upper and lower sides of the first annular seat 204a are respectively The second tooth ring assembly 205 includes a second annular seat 205a arranged on the outer surface of the fire extinguishing bomb 203, the outer surface of the second annular seat 205a is fixedly connected with the outer sharp teeth 205b, and the inner side wall of the second annular seat 205a is fixedly connected with the inner sharp teeth 205c; the heat shrink net assembly 206 includes an upper heat shrink net 206a arranged on the upper side of the first annular seat 204a, and the lower heat shrink net 206b is fixedly connected to the lower side of the second annular seat 205a.

[0035] Among them, there are two connecting grooves 202a, and the two connecting grooves 202a are symmetrically arranged, the corresponding second explosion-proof glass 202b and the third explosion-proof glass 202c are symmetrically arranged, and the two corresponding grooves 202d are combined into a circular hole with a diameter of 20 cm, which is suitable for cables of 2500 and below. The circular hole is also convenient for operation and maintenance personnel to measure temperature and grasp the operation status of the cable joint at any time. There are multiple upper tines 204b and lower tines 204c, and the multiple upper tines 204b and the multiple lower tines 204c are distributed in a circular array, there are multiple outer tines 205b and inner tines 205c, and the multiple outer tines 205b and the multiple inner tines 205c are distributed in a circular array, and the upper heat shrink net 206a and the lower heat shrink net 206b are symmetrically arranged.

[0036] When in use, first put the fire extinguishing bomb 203 into the heat shrink net assembly 206. When in use, after 16 fire extinguishing bombs 203 are evenly installed in the frame 201a, the support assembly 103 is placed in a suitable position, and according to the actual situation, the adjusting knob 104b is turned to make the adjusting knob 104b disengage from the corresponding thread groove 104a. Then, the position of the support leg 103a is adjusted up and down under the action of the slide groove 103b, and then the adjusting knob 104b is fixedly connected to the corresponding thread groove 104a. So that the supporting leg 103a and the support 102 are fixed, it is convenient to adjust the length of the supporting leg 103a according to the actual situation, so that the mounting bracket 101 is placed more stably, and then the frame 201a is placed on the mounting bracket 101, and then the second bulletproof glass and the third bulletproof glass are placed in the connecting groove 202a, and the bolts are fixed to the second bulletproof glass and the third bulletproof glass and the frame 201a through the fixing groove 201c. Then, the cable intermediate joint is installed in the frame 201a through the groove 202d, and the first bulletproof glass is placed in the mounting groove, and the bolts are fixed to the first bulletproof glass and the frame 201a through the fixing groove 201c. When the cable intermediate joint catches fire, multiple fire extinguishing bombs 203 will be in a high temperature environment, and the material of the heat shrinkable net will shrink due to the heat, so that the surface of the fire extinguishing bomb 203 will protrude outward from the grid. At this time, the protruding surface of the fire extinguishing bomb 203 will contact with the tooth structure. When the contraction reaches a certain degree and the fire extinguishing bomb 203 protrudes to a certain degree, the fire extinguishing bomb 203 will be installed in the frame 201a. The surface of the bullet 203 is punctured by the tooth structure at the contact point. Subsequently, the originally expanded fire extinguishing bullet 203 shrinks inward due to the contraction stress of the elastic membrane, so that the internal fire extinguishing fluid is squeezed out from the puncture point due to the contraction, so that the fire extinguishing bullet 203 can be automatically triggered to extinguish the fire. When the middle joint of the cable explodes, the first bulletproof glass, the second bulletproof glass, the third bulletproof glass and the frame 201a absorb and buffer the shock wave generated by the explosion, play an explosion-proof role, and can effectively prevent the spread of fire.

[0037] In summary, through the cooperation of the support component 100 and the explosion-proof component 201, when a fire occurs in the middle joint of the cable, the fire can be extinguished in time, the fire can be effectively prevented from spreading, and the shock wave generated by the explosion can be absorbed and buffered.

[0038] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0039] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0040] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A fire prevention method for a cable intermediate joint, characterized in that: include, First, place the cable intermediate joint mounting bracket (101) at a suitable position; Place the explosion-proof mechanism (M) on the mounting bracket (101); Install the cable intermediate joint in the explosion-proof mechanism (M).

2. The fire prevention method for cable intermediate joints according to claim 1, characterized in that: When a fire occurs in the cable intermediate joint, the fire extinguishing bomb (203) in the explosion-proof mechanism (M) is triggered by heat to automatically extinguish the fire, thereby achieving the purpose of fire prevention.

3. An explosion-proof device for a cable intermediate joint, comprising any one of 1 to 2 explosion-proof mechanisms (M), characterized in that: include, A support component (100) comprises a mounting bracket (101), a support (102) arranged at the lower side of the mounting bracket (101), a support assembly (103) arranged at the lower side of the mounting bracket (101), and an adjustment assembly (104) arranged at a side wall of the support assembly (103); The explosion-proof component (200) comprises an explosion-proof assembly (201) arranged on the upper side of a mounting bracket (101), a connecting assembly (202) arranged on the side wall of the explosion-proof assembly (201), a fire extinguishing bomb (203) arranged in the explosion-proof assembly (201), a first toothed ring assembly (204) arranged on the outer surface of the fire extinguishing bomb (203), two second toothed ring assemblies (205) arranged on the outer surface of the fire extinguishing bomb (203), and a heat shrinkable net assembly (206) arranged on the side wall of the first toothed ring assembly (204).

4. The explosion-proof device for the cable intermediate joint according to claim 3, characterized in that: The support assembly (103) comprises a support leg (103a) arranged on the lower side of the support (102), and a slide groove (103b) is formed on the upper side of the support leg (103a); Wherein, the support (102) is slidably connected to the slide groove (103b).

5. The explosion-proof device for the cable intermediate joint according to claim 4, characterized in that: The adjustment assembly (104) comprises a threaded groove (104a) arranged on the side wall of the support (102), and the side wall of the support leg (103a) is threadedly connected with an adjustment knob (104b); Wherein, the adjusting knob (104b) is threadedly connected to the thread groove (104a).

6. The explosion-proof device for the cable intermediate joint according to claim 5, characterized in that: The explosion-proof assembly (201) comprises a frame (201a) arranged on the upper side of the mounting bracket (101), a first explosion-proof glass (201b) is placed in the mounting groove of the frame (201a), and a fixing groove (201c) is formed on the side wall of the frame (201a).

7. The explosion-proof device for the cable intermediate joint according to claim 6, characterized in that: The connection assembly (202) comprises a connection groove (202a) arranged on a frame (201a), a second explosion-proof glass (202b) is placed on the inner side wall of the connection groove (202a), a third explosion-proof glass (202c) is placed on the inner side wall of the connection groove (202a), and grooves (202d) are formed on the side walls of the first explosion-proof glass (201b) and the second explosion-proof glass (202b).

8. The explosion-proof device for the cable intermediate joint according to claim 7, characterized in that: The first tooth ring assembly (204) comprises a first annular seat (204a) arranged on the outer surface of the fire extinguishing bomb (203), and the upper side and the lower side of the first annular seat (204a) are respectively fixedly connected with upper sharp teeth (204b) and lower sharp teeth (204c).

9. The explosion-proof device for the cable intermediate joint according to claim 8, characterized in that: The second gear ring assembly (205) comprises a second annular seat (205a) arranged on the outer surface of the fire extinguishing bomb (203), the outer surface of the second annular seat (205a) is fixedly connected with outer sharp teeth (205b), and the inner side wall of the second annular seat (205a) is fixedly connected with inner sharp teeth (205c).

10. The explosion-proof device for the cable intermediate joint according to claim 9, characterized in that: The heat shrink net assembly (206) comprises an upper heat shrink net (206a) arranged on the upper side of the first annular seat (204a), and a lower heat shrink net (206b) is fixedly connected to the lower side of the second annular seat (205a).

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