A cable branch box with a fireproof flame-retardant layer
By installing dry powder and inert gas fire extinguishing mechanisms and flame-retardant layers inside the cable branch box, the problem of cable overheating and combustion in the cable branch box is solved, achieving rapid and comprehensive fire extinguishing and fire prevention effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XINJINGYUAN POWER TECH CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-07
AI Technical Summary
Existing cable distribution boxes are prone to fire due to overheating of cables during use and lack effective fire extinguishing capabilities, which can lead to the spread of fire and damage to the environment.
A cable branch box with a fireproof and flame-retardant layer was designed. It has a built-in first fire extinguishing mechanism and a second fire extinguishing mechanism. It uses dry powder and inert gas to extinguish the fire, and the flame-retardant layer inhibits the spread of flames.
It achieves rapid and comprehensive fire extinguishing, prevents cable branch boxes from burning and reduces oxygen concentration, ensuring safety and comprehensive fire suppression.
Smart Images

Figure CN224473038U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable branch box technology, specifically a cable branch box with a fireproof and flame-retardant layer. Background Technology
[0002] Cable distribution boxes are commonly used power distribution equipment in power distribution networks. They are mainly used for branching, connecting, or splitting cable lines to achieve multi-circuit cable connections, thereby improving power supply flexibility and reliability. They are widely used in urban power distribution networks, residential communities, industrial parks, street lighting, and other scenarios, and are key node equipment in cable upgrades.
[0003] When existing cable distribution boxes are in use, they contain a large number of cables, which are prone to overheating and combustion during prolonged use. This can lead to fires in the cable distribution boxes themselves. Since existing cable distribution boxes do not have fire extinguishing capabilities, the fire can easily spread and damage the surrounding environment.
[0004] Therefore, this utility model provides a cable branch box with a fireproof and flame-retardant layer to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This utility model provides a cable branch box with a fireproof and flame-retardant layer, which aims to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a cable branch box with a fireproof and flame-retardant layer, comprising a box body, wherein a first fire extinguishing mechanism and a second fire extinguishing mechanism are provided inside the box body;
[0009] The first fire extinguishing mechanism includes a first storage box located inside a housing. A pump body is fixedly connected to the top of the first storage box, and the output end of the pump body is connected to the interior of the first storage box. Multiple guide cylinders are equidistantly arranged directly below the first storage box. The top end of each guide cylinder is connected to the interior of the first storage box, and the bottom end of each guide cylinder is connected to the top of a sprayer. A dispersion plate is fixedly connected to the inner wall of the sprayer, and several spray holes are opened on the outer wall of the sprayer.
[0010] As a preferred technical solution of this application, the second fire extinguishing mechanism includes a second storage box, which is fixedly connected to both sides of the inner wall of the box. The bottom of the second storage box has multiple mounting slots, and the second storage box is fixedly connected to multiple fans through the multiple mounting slots. The top of the second storage box has multiple through holes, and the positions of the through holes correspond to the positions of the fans. Multiple nozzles are fixedly connected to the top of the second storage box at equal intervals, and the positions of the nozzles coincide with the positions of the through holes.
[0011] As a preferred technical solution of this application, the second storage box has multiple sealing plates slidably connected inside. The outer diameter of the sealing plate is adapted to the inner diameter of the through hole, and two adjacent sealing plates are fixedly connected by the same connector. An electric telescopic rod is fixedly connected to one side of the inner wall of the second storage box, and the output end of the electric telescopic rod is fixedly connected to one side of the sealing plate.
[0012] As a preferred technical solution of this application, the box body is provided with an adjustment plate inside, and the inner wall of the adjustment plate is provided with a plurality of connection holes at equal intervals. The adjustment plate is fixedly connected to a plurality of sprayers through the plurality of connection holes, and a rotating rod is fixedly connected to both sides of the adjustment plate.
[0013] As a preferred technical solution of this application, both sides of the housing are fixedly connected to support seats, and the interior of each support seat is provided with a bearing. The support seat is rotatably connected to a rotating rod through the bearing. A first gear is fixedly connected to the outer wall of one of the rotating rods. The first gear meshes with a second gear. The outer diameter and number of teeth of the first gear are both larger than those of the second gear. The inner wall of the second gear is connected to the output end of the motor. The motor is fixedly connected to one side of the housing.
[0014] As a preferred technical solution of this application, the inner wall of the box is provided with a flame retardant layer. The flame retardant layer is based on epoxy resin and contains magnesium hydroxide as a flame retardant. It is coated on the inner wall of the box. The box is hinged to the two boxes respectively by hinges.
[0015] (III) Beneficial Effects
[0016] 1. The cable branch box with a fireproof and flame-retardant layer is equipped with a first fire extinguishing mechanism. When the cable branch box is in use, the stored dry powder is sprayed towards multiple locations inside the box, so that the dry powder can quickly extinguish the fire inside the box, thereby ensuring the safety of the cable branch box and preventing the fire from damaging the surrounding environment.
[0017] 2. The cable branch box with a fireproof and flame-retardant layer is equipped with a second fire extinguishing mechanism. When the cable branch box is in use, the fan accelerates the flow of inert gas inside the second storage box, allowing the inert gas to quickly fill the inside of the box, thereby reducing the oxygen concentration inside the box and achieving a second fire extinguishing effect. In conjunction with the first fire extinguishing mechanism, it can ensure the comprehensiveness of fire extinguishing. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a cable branch box with a fireproof and flame-retardant layer.
[0019] Figure 2 This is a three-dimensional structural diagram of a cable branch box with a fire-retardant layer.
[0020] Figure 3 A three-dimensional structural schematic diagram of the first gear in a cable branch box with a fireproof and flame-retardant layer;
[0021] Figure 4 A three-dimensional structural diagram of a fan in a cable branch box with a fireproof and flame-retardant layer;
[0022] Figure 5 This is a schematic diagram of the distribution of the second fire extinguishing mechanism in a cable branch box with a fireproof and flame-retardant layer.
[0023] In the picture:
[0024] 1. Housing; 2. First fire extinguishing mechanism; 201. First storage box; 202. Feed guide cylinder; 203. Pump body; 204. Sprayer; 205. Dispersion plate; 206. Spraying hole; 3. Second fire extinguishing mechanism; 301. Second storage box; 302. Fan; 303. Through hole; 304. Nozzle; 305. Sealing plate; 306. Connecting piece; 307. Electric telescopic rod; 4. Adjusting plate; 5. Rotating rod; 6. Support base; 7. Bearing; 8. First gear; 9. Second gear; 10. Motor; 11. Flame retardant layer; 12. Housing door. Detailed Implementation
[0025] 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.
[0026] like Figure 1-5As shown, this utility model provides a cable branch box with a fireproof and flame-retardant layer, including a box body 1, and a first fire extinguishing mechanism 2 and a second fire extinguishing mechanism 3 are provided inside the box body 1.
[0027] The first fire extinguishing mechanism 2 includes a first storage box 201, which is located inside the housing 1. A pump body 203 is fixedly connected to the top of the first storage box 201. The output end of the pump body 203 is connected to the interior of the first storage box 201. Multiple guide cylinders 202 are equidistantly arranged directly below the first storage box 201. The top end of the guide cylinder 202 is connected to the interior of the first storage box 201, and the bottom end of the guide cylinder 202 is connected to the top of the sprayer 204. A dispersion plate 205 is fixedly connected to the inner wall of the sprayer 204, and several spray holes 206 are opened on the outer wall of the sprayer 204.
[0028] The second fire extinguishing mechanism 3 includes a second storage box 301, which is fixedly connected to both sides of the inner wall of the housing 1. The bottom of the second storage box 301 has multiple mounting slots, and the second storage box 301 is fixedly connected to multiple fans 302 through these slots. The top of the second storage box 301 has multiple through holes 303, the positions of which correspond to the positions of the fans 302. Multiple nozzles 304 are fixedly connected at equal intervals to the top of the second storage box 301, the positions of which coincide with the positions of the through holes 303. Multiple sealing plates 305 are slidably connected inside the second storage box 301, the outer diameter of which is... The inner diameter of the through hole 303 is matched, and two adjacent sealing plates 305 are fixedly connected by the same connector 306. An electric telescopic rod 307 is fixedly connected to one side of the inner wall of the second storage box 301. The output end of the electric telescopic rod 307 is fixedly connected to one side of the sealing plate 305. By setting the second fire extinguishing mechanism 3, when the cable branch box is in use, the fan 302 accelerates the flow of inert gas inside the second storage box 301, so that the inert gas can quickly fill the interior of the box 1, thereby reducing the oxygen concentration inside the box 1, and thus achieving the second fire extinguishing effect. In conjunction with the first fire extinguishing mechanism 2, it can ensure the comprehensiveness of fire extinguishing.
[0029] An adjusting plate 4 is installed inside the housing 1. Multiple connecting holes are equidistantly spaced on the inner wall of the adjusting plate 4. The adjusting plate 4 is fixedly connected to multiple sprayers 204 through these connecting holes. Rotating rods 5 are fixedly connected to both sides of the adjusting plate 4. Support seats 6 are fixedly connected to both sides of the housing 1. Bearings 7 are installed inside each support seat 6. The support seats 6 are rotatably connected to the rotating rods 5 through the bearings 7. By setting up the support seats 6 and bearings 7, the rotating rods 5 can be supported during rotation, ensuring the stability of the rotation and reducing the friction generated during rotation, thus ensuring the efficiency of rotation and preventing jamming. A first gear 8 is fixedly connected to the outer wall of the rotating rod 5. The first gear 8 meshes with a second gear 9. The outer diameter and number of teeth of the first gear 8 are both larger than those of the second gear 9. The inner wall of the second gear 9 is connected to the output end of the motor 10. The motor 10 is fixedly connected to one side of the box 1. By setting the motor 10, the first gear 8 and the second gear 9, the angle of the first fire extinguishing mechanism 2 can be adjusted when the cable branch box is in use, so as to facilitate fire extinguishing of the materials inside the box 1 from multiple angles, ensuring the fire extinguishing effect of the first fire extinguishing mechanism 2. Furthermore, by using a small gear to drive a large gear, the stability of the rotation adjustment can be improved, thereby improving the accuracy of the angle adjustment of the first fire extinguishing mechanism 2.
[0030] The inner wall of the enclosure 1 is provided with a flame-retardant layer 11. The flame-retardant layer 11 is based on epoxy resin and contains magnesium hydroxide as a flame retardant. It is coated on the inner wall of the enclosure 1. The enclosure 1 is hinged to the two enclosure doors 12 by hinges. By providing the flame-retardant layer 11, the spread of flame can be suppressed and delayed, or the heat release rate and smoke and toxic gas generation can be reduced when the cable branch box material is burning, thereby improving the safety of the cable branch box.
[0031] Working principle:
[0032] In use, when a fire occurs inside the housing 1, the pump 203 is activated. Since the first storage box 201 stores dry powder, the pump 203 conveys the dry powder through the guide cylinder 202 to the sprayer 204, where it is sprayed out. Because the dispersing plate 205 has many fine mesh holes, the dry powder is dispersed. Furthermore, the spray nozzles 206 are located outside the sprayer 204, allowing the dry powder to be sprayed outwards from the bottom and outer wall of the sprayer 204 in multiple directions. The system can perform initial fire suppression. Simultaneously, the electric telescopic rod 307 is activated, which moves the sealing plate 305 on one side. This causes multiple sealing plates 305 to move simultaneously via the connector 306, opening the through hole 303. Since the second storage box 301 is filled with inert gas, and the fan 302 is activated, the fan diffuses the inert gas outward, thereby reducing the oxygen concentration inside the box 1 and achieving a secondary fire suppression effect.
[0033] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A cable branch box with a fire-retardant layer, comprising a box body (1), characterized in that: The box (1) is equipped with a first fire extinguishing mechanism (2) and a second fire extinguishing mechanism (3). The first fire extinguishing mechanism (2) includes a first storage box (201), which is located inside the box body (1). A pump body (203) is fixedly connected to the top of the first storage box (201). The output end of the pump body (203) is connected to the inside of the first storage box (201). Multiple guide cylinders (202) are equidistantly arranged directly below the first storage box (201). The top end of the guide cylinder (202) is connected to the inside of the first storage box (201). The bottom end of the guide cylinder (202) is connected to the top of the sprayer (204). A dispersion plate (205) is fixedly connected to the inner wall of the sprayer (204). A number of spray holes (206) are opened on the outer wall of the sprayer (204).
2. A cable branch box with a fire-retardant layer according to claim 1, characterized in that: The second fire extinguishing mechanism (3) includes a second storage box (301), which is fixedly connected to both sides of the inner wall of the box (1). The bottom of the second storage box (301) is provided with multiple mounting slots, and the second storage box (301) is fixedly connected to multiple fans (302) through the multiple mounting slots. The top of the second storage box (301) is provided with multiple through holes (303), and the position of the through holes (303) corresponds to the position of the fans (302). The top of the second storage box (301) is fixedly connected with multiple nozzles (304) at equal intervals, and the position of the nozzles (304) coincides with the position of the through holes (303).
3. A cable branch box with a fire-retardant layer according to claim 2, characterized in that: The second storage box (301) has multiple sealing plates (305) slidably connected inside. The outer diameter of the sealing plate (305) is adapted to the inner diameter of the through hole (303), and two adjacent sealing plates (305) are fixedly connected by the same connector (306). An electric telescopic rod (307) is fixedly connected to one side of the inner wall of the second storage box (301), and the output end of the electric telescopic rod (307) is fixedly connected to one side of the sealing plate (305).
4. A cable branch box with a fire-retardant layer according to claim 1, characterized in that: The box (1) is equipped with an adjustment plate (4). The inner wall of the adjustment plate (4) is provided with multiple connecting holes at equal intervals. The adjustment plate (4) is fixedly connected to multiple sprayers (204) through the multiple connecting holes. Rotating rods (5) are fixedly connected to both sides of the adjustment plate (4).
5. A cable branch box with a fire-retardant layer according to claim 4, characterized in that: Both sides of the housing (1) are fixedly connected to support seats (6), and bearings (7) are provided inside the two support seats (6). The support seats (6) are rotatably connected to the rotating rod (5) through the bearings (7). A first gear (8) is fixedly connected to the outer wall of one of the rotating rods (5). The first gear (8) meshes with the second gear (9). The outer diameter and number of teeth of the first gear (8) are both larger than those of the second gear (9). The inner wall of the second gear (9) is connected to the output end of the motor (10). The motor (10) is fixedly connected to one side of the housing (1).
6. A cable branch box with a fire-retardant layer according to claim 1, characterized in that: The inner wall of the box (1) is provided with a flame retardant layer (11). The flame retardant layer (11) is made of epoxy resin as the base material and magnesium hydroxide flame retardant is added. It is coated on the inner wall of the box (1). The box (1) is hinged to the two boxes (12) respectively by hinges.