Flame-retardant fireproof cable

Abstract

The utility model relates to the technical field of fire-resistant cables, in particular to a flame-retardant fire-resistant cable which comprises a protective layer, a battery cell is arranged in the protective layer, a pulling block is arranged on the outer wall of the protective layer, and a moving plate is fixedly connected to the inner wall of the pulling block. After a worker gets close to a cable, the worker can hold a pulling block by hand and drag the pulling block left and right, the pulling block can drive a moving plate and a cleaning ring to move while moving, and due to the fact that a plurality of cleaning teeth are arranged on the cleaning ring and make close contact with a protective layer, an ice layer on the outer wall of the protective layer can be scooped up, and the cable is cleaned. The cleaning rings are arranged on the two sides of the pulling block, so that an ice layer on the outer wall of the protection layer can be cleaned after the pulling block moves left and right in a large range, the situation that the outer wall of the protection layer is scratched or damaged due to the fact that a worker knocks the ice layer on the outer wall of the protection layer through an insulating rod and a bamboo pole is avoided, and the service life of the cable is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of fire-resistant cables, and in particular to a flame-retardant fire-resistant cable. Background Technology

[0002] Cables are linear materials made of one or more mutually insulated conductors and an outer insulating protective layer, used to transmit electricity or signals. They can transmit electricity from power plants to various power-consuming locations and also enable the transmission of information between different devices. They are widely used in many fields such as power, communication, and industrial control. They have the characteristics of good insulation performance, high mechanical strength, and adaptability to various complex environments. They can effectively ensure the stable transmission of current or signals and prevent safety accidents such as leakage and short circuits.

[0003] A search revealed that Chinese Patent Publication No. CN206921561U discloses a flame-retardant and fire-resistant cable, including a cable core. The cable core is composed of an inner flame-retardant insulation layer, an inner high-temperature resistant layer, a fire extinguishing layer, an outer high-temperature resistant layer, and an outer flame-retardant insulation layer, forming multiple layers of protection for the cable core. This can effectively improve the fire resistance and high-temperature resistance of the cable and extend its fire resistance time.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: In the prior art, if ice forms on the outer wall of a cable, workers will use insulated rods or bamboo poles to knock the ice layer on its surface. Knocking on the ice layer may cause scratches, cracks, or damage to the outer sheath of the cable, reducing the cable's service life. Utility Model Content

[0005] To prevent damage to the outer wall of the cable during ice breaking, this application provides a flame-retardant and fire-resistant cable.

[0006] This application provides a flame-retardant and fire-resistant cable, which adopts the following technical solution: it includes a protective layer, an internal battery cell, a pull block on the outer wall of the protective layer, a movable plate fixedly connected to the inner wall of the pull block, a cleaning ring fixedly connected to the front of the movable plate, and cleaning teeth fixedly connected to the front of the cleaning ring. The number of cleaning rings is two, and the two cleaning rings are symmetrically arranged with the pull block as the center.

[0007] Optionally, a protective component is provided inside the protective layer. The protective component includes a low-smoke halogen-free layer. The outer wall of the low-smoke halogen-free layer is fixedly connected to the inner wall of the protective layer, and a protective frame is fixedly connected to the inner wall of the low-smoke halogen-free layer.

[0008] Optionally, the inner wall of the protective frame is fixedly connected with a connecting piece, and the front of the connecting piece is provided with heat dissipation holes. The number of heat dissipation holes is several, and the several heat dissipation holes are arranged in a ring array. The number of connecting pieces is several, and the several connecting pieces are arranged in a ring array.

[0009] Optionally, an insulating layer is fixedly connected to the inner wall of the connecting piece, a flame-retardant filler is fixedly connected to the inner wall of the insulating layer, a protective ring is fixedly connected to the inner wall of the flame-retardant filler, and the inner wall of the protective ring is fixedly connected to the outer wall of the battery cell.

[0010] Optionally, the inner wall of the protective frame is provided with an assembly groove, the inner wall of the assembly groove is in contact with the outer wall of the battery cell, the bottom of the battery cell is fixedly connected to the top of the inner wall of the protective frame, and the number of the insulating layers is several, and the several insulating layers are arranged in a ring array.

[0011] Optionally, the outer wall of the protective layer is provided with a cleaning component, the cleaning component including a connecting plate, the top of the connecting plate being fixedly connected to the bottom of the movable plate, a fixing plate being fixedly connected to the inner wall of the movable plate, and a pulley being rotatably connected to the left side of the fixing plate via a pin.

[0012] Optionally, the number of movable plates is several, and the several movable plates are arranged in a circular array; the number of pulleys is several, and the several pulleys are arranged in a circular array.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. This utility model, by incorporating components such as a pull block, cleaning rings, and cleaning teeth, allows workers to approach the cable and drag the pull block left and right. As the pull block moves, it also moves the moving plate and cleaning rings. Because the cleaning rings have several cleaning teeth that make close contact with the protective layer, they effectively remove the ice layer from the outer wall of the protective layer. Since the pull block has cleaning rings on both sides, it cleans the ice layer on the outer wall of the protective layer after a wide range of left and right movements. This avoids the need for workers to use insulated rods or bamboo poles to strike the ice layer on the outer wall of the protective layer, which could cause scratches or damage, thus improving the cable's service life.

[0015] 2. This utility model incorporates components such as connecting plates, heat dissipation holes, and an insulating layer. The heat dissipation holes in the connecting plates help dissipate heat from the battery cell. Simultaneously, the insulating layer, with its two hollow layers and cross-linked polyethylene material, and its inner and outer walls coated with inorganic flame retardants, can delay the damage to the cable insulation during a fire, while also providing heat dissipation. The protective frame and protective ring, with their external flame-retardant filler being ceramicized silicone rubber, form a protective shell with the protective frame and ring when exposed to high-temperature flames, protecting the battery cell and preventing damage from flames and the spread of fire. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the structure of the protection component in the embodiments of this application;

[0018] Figure 3 This is a schematic diagram of the cleaning component in an embodiment of this application;

[0019] Figure 4 This is an embodiment of the present application. Figure 3 A magnified structural diagram of A in the middle.

[0020] Reference numerals: 1. Protective layer; 11. Battery cell; 2. Protective component; 21. Low-smoke halogen-free layer; 22. Connecting piece; 221. Heat dissipation hole; 23. Insulation layer; 24. Protective frame; 241. Protective ring; 25. Flame-retardant filler; 3. Cleaning component; 31. Moving plate; 311. Pulling block; 32. Connecting plate; 33. Cleaning ring; 331. Cleaning tooth; 34. Fixing plate; 341. Pulley. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0022] This application discloses a flame-retardant and fire-resistant cable. For example... Figure 1 , Figure 3 , Figure 4 As shown, it includes a protective layer 1, the outer wall of which is coated with an organosilicon fireproof coating. The coating is based on organosilicon resin and has excellent high temperature resistance, weather resistance and electrical insulation. The coating can form a tough ceramic coating at high temperature, which can not only effectively prevent the spread of flames, but also maintain a certain structural strength and electrical insulation performance after a fire. A battery cell 11 is provided inside the protective layer 1, and a pulling block 311 is provided on the outer wall of the protective layer 1. A movable plate 31 is fixedly connected to the inner wall of the pulling block 311.

[0023] In this embodiment, a cleaning ring 33 is fixedly connected to the front of the movable plate 31, and a cleaning tooth 331 is fixedly connected to the front of the cleaning ring 33. There are two cleaning rings 33, and the two cleaning rings 33 are symmetrically arranged with the pull block 311 as the center.

[0024] Please see Figure 2As shown, an insulating layer 23 is fixedly connected to the inner wall of the connecting piece 22, and a flame-retardant filler 25 is fixedly connected to the inner wall of the insulating layer 23. The flame-retardant filler 25 is ceramicized silicone rubber, which has the elasticity and flexibility of rubber at room temperature and can fill the internal gaps of the cable well. Under the action of high-temperature flame, it will undergo ceramicization transformation to form a hard ceramic shell with good heat insulation, fire resistance and mechanical strength, which can effectively prevent the flame from spreading to the inside of the cable. A protective ring 241 is fixedly connected to the inner wall of the flame-retardant filler 25, and the inner wall of the protective ring 241 is fixedly connected to the outer wall of the battery core 11.

[0025] Please see Figure 4 As shown, there are several movable plates 31 arranged in a circular array, and several pulleys 341 arranged in a circular array. The arrangement of several pulleys 341 makes it easier for staff to move the cleaning component 3 back and forth, reducing damage to the protective layer 1.

[0026] Please see Figure 2 As shown, a connecting piece 22 is fixedly connected to the inner wall of the protective frame 24. The front of the connecting piece 22 has heat dissipation holes 221. There are several heat dissipation holes 221 arranged in a ring array. There are several connecting pieces 22, arranged in a ring array.

[0027] Please see Figure 3 , Figure 4 As shown, a cleaning component 3 is provided on the outer wall of the protective layer 1. The cleaning component 3 includes a connecting plate 32. The top of the connecting plate 32 is fixedly connected to the bottom of the moving plate 31. A fixing plate 34 is fixedly connected to the inner wall of the moving plate 31. A pulley 341 is rotatably connected to the left side of the fixing plate 34 via a pin.

[0028] Please see Figure 2 As shown, a protective component 2 is provided inside the protective layer 1. The protective component 2 includes a low-smoke halogen-free layer 21. The outer wall of the low-smoke halogen-free layer 21 is fixedly connected to the inner wall of the protective layer 1. A protective frame 24 is fixedly connected to the inner wall of the low-smoke halogen-free layer 21.

[0029] Please see Figure 2 As shown, the inner wall of the protective frame 24 has an assembly groove, the inner wall of the assembly groove is in contact with the outer wall of the battery cell 11, the bottom of the battery cell 11 is fixedly connected to the top of the inner wall of the protective frame 24, and there are several insulating layers 23, which are arranged in a ring array.

[0030] The implementation principle of a flame-retardant and fire-resistant cable in this embodiment is as follows: When a worker approaches the cable, they can drag the pull block 311 left and right. As the pull block 311 moves, it also moves the moving plate 31 and the cleaning ring 33. Since the cleaning ring 33 has several cleaning teeth 331, the teeth 331 make close contact with the protective layer 1, thus scraping off the ice layer on the outer wall of the protective layer 1. Because the pull block 311 has cleaning rings 33 on both sides, it cleans the ice layer on the outer wall of the protective layer 1 after a wide range of left and right movements. This avoids the worker using insulated rods and bamboo poles to strike the ice layer on the outer wall of the protective layer 1, which could cause scratches or damage. To prevent damage and extend the service life of the cable, the heat dissipation holes 221 in the connecting piece 22 can dissipate heat from the battery cell 11. At the same time, since the insulation layer 23 has two hollow layers and is made of cross-linked polyethylene, and both the inner and outer walls are coated with inorganic flame retardants, it can delay the damage to the cable insulation in the event of a fire and also play a role in heat dissipation. Under the composition of the protective frame 24 and the protective ring 241, the flame retardant filler 25 on its outside is ceramicized silicone rubber, which can form a protective shell with the protective frame 24 and the protective ring 241 when exposed to high temperature flames, thus protecting the battery cell 11 and preventing the flame from damaging the battery cell 11 and causing the fire to spread.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fire-retardant fire-resistant cable comprising a protective layer (1), characterised in that: The protective layer (1) is provided with a battery cell (11) inside. The outer wall of the protective layer (1) is provided with a pull block (311). The inner wall of the pull block (311) is fixedly connected with a moving plate (31). The front of the moving plate (31) is fixedly connected with a cleaning ring (33). The front of the cleaning ring (33) is fixedly connected with a cleaning tooth (331). There are two cleaning rings (33), and the two cleaning rings (33) are symmetrically arranged with the pull block (311) as the center.

2. A fire-retardant, fire-resistant cable according to claim 1, characterised in that: The protective layer (1) is provided with a protective component (2), which includes a low-smoke halogen-free layer (21). The outer wall of the low-smoke halogen-free layer (21) is fixedly connected to the inner wall of the protective layer (1), and a protective frame (24) is fixedly connected to the inner wall of the low-smoke halogen-free layer (21).

3. A fire resistant, fire endurance cable according to claim 2, characterised in that: The inner wall of the protective frame (24) is fixedly connected with a connecting piece (22). The connecting piece (22) has a heat dissipation hole (221) on its front side. The number of heat dissipation holes (221) is several, and the several heat dissipation holes (221) are arranged in a ring array. The number of connecting pieces (22) is several, and the several connecting pieces (22) are arranged in a ring array.

4. A fire resistant, fire survivable cable according to claim 3, characterised in that: An insulating layer (23) is fixedly connected to the inner wall of the connecting piece (22), a flame-retardant filler (25) is fixedly connected to the inner wall of the insulating layer (23), a protective ring (241) is fixedly connected to the inner wall of the flame-retardant filler (25), and the inner wall of the protective ring (241) is fixedly connected to the outer wall of the battery cell (11).

5. A fire resistant, fire survivable cable according to claim 4, characterised in that: The inner wall of the protective frame (24) is provided with an assembly groove, the inner wall of the assembly groove is in contact with the outer wall of the battery cell (11), the bottom of the battery cell (11) is fixedly connected to the top of the inner wall of the protective frame (24), and the number of the insulating layers (23) is several, and the several insulating layers (23) are arranged in a ring array.

6. A fire-retardant, fire-resistant cable according to claim 1, characterized in that: The outer wall of the protective layer (1) is provided with a cleaning component (3), the cleaning component (3) includes a connecting plate (32), the top of the connecting plate (32) is fixedly connected to the bottom of the moving plate (31), the inner wall of the moving plate (31) is fixedly connected with a fixing plate (34), and the left side of the fixing plate (34) is rotatably connected to a pulley (341) via a pin.

7. A flame-retardant and fire-resistant cable according to claim 6, characterized in that: The number of movable plates (31) is several, and the several movable plates (31) are arranged in a circular array. The number of pulleys (341) is several, and the several pulleys (341) are arranged in a circular array.

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