Fireproof cable

Abstract

The utility model relates to the technical field of cables, in particular to a fireproof cable, which comprises an inner sheath, a reinforcing assembly is fixedly mounted in an inner cavity of the inner sheath, the reinforcing assembly comprises a cross-shaped fixing frame, a waterproof sheath is mounted on the outer surface of the inner sheath in a sleeving manner, and a temperature-resistant composite layer is mounted on the outer surface of the waterproof sheath in a sleeving manner. According to the utility model, the cable has general strength, after the cable is impacted or heavily pressed, the cable core in the cable may be broken, the normal work of the cable is influenced, the cable needs to be replaced again, and the use cost is increased, so that the internal cable core can be effectively protected, the protection performance of the cable is improved, and the service life of the cable is prolonged. And triple fire prevention is carried out, so that when the cable is in contact with a fire source, fire prevention operation can be carried out layer by layer, the cable core in the cable can be effectively prevented from being influenced by the fire behavior, and the fire prevention performance of the cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a fireproof cable. Background Art

[0002] Cable is an electrical energy or signal transmission device, usually composed of several or several groups of wires. Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc.

[0003] After searching, the patent number is CN220456129U, and the name is a utility model of a fire-proof cable, including a wire core. Through research and analysis, it is found that although the buffering performance of the cable is good, it still has the following disadvantages to a certain extent.

[0004] For example, the cable has average strength. After being impacted or subjected to heavy pressure, the wire core inside the cable may break, which will affect the normal operation of the cable and require replacement of the cable, increasing the cost of use. In order to solve the above technical problems, we have designed a fire-proof cable. Utility Model Content

[0005] The utility model aims to provide a fireproof cable with the advantages of high strength and fire resistance, which solves the problem that the cable has general strength and may cause the wire core inside the cable to break after being impacted or pressed, thereby affecting the normal operation of the cable and requiring the cable to be replaced, thereby increasing the cost of use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fireproof cable, comprising an inner sheath, the inner cavity of the inner sheath is fixedly installed with a reinforcement component, the reinforcement component comprises a cross fixing frame, the outer surface of the inner sheath is sleeved with a waterproof sheath, the outer surface of the waterproof sheath is sleeved with a temperature-resistant composite layer, the temperature-resistant composite layer comprises a heat-insulating inner layer and a heat-insulating outer layer, and the outer surface of the heat-insulating outer layer is sleeved with a fireproof composite layer.

[0007] Preferably, the cross fixing frame is fixedly installed in the inner cavity of the inner sheath, a reinforcement connection block is fixedly connected to the surface of the cross fixing frame, and a shielding sleeve is fixedly connected between three reinforcement connection blocks located on one side of the cross fixing frame.

[0008] Preferably, a wire core is provided through the inner cavity of the shielding sleeve, and the number of the wire cores is three and they are twisted and arranged inside the shielding sleeve.

[0009] Preferably, the thermal insulation inner layer is fixedly sleeved on the outer surface of the waterproof sheath, and the thermal insulation outer layer is fixedly sleeved on the outer surface of the thermal insulation inner layer.

[0010] Preferably, the fireproof composite layer comprises a fireproof inner layer, the fireproof inner layer is fixedly sleeved on the outer surface of the heat-insulating outer layer, the outer surface of the fireproof inner layer is fixedly sleeved with a fireproof middle layer, and the outer surface of the fireproof middle layer is fixedly sleeved with a fireproof outer layer.

[0011] Preferably, reinforcing ribs are provided between the inner cavity of the inner sheath and the cross fixing frame, and the outside of the reinforcing ribs is filled with sealing fillers.

[0012] Preferably, the cross fixing frame and the reinforcing ribs are both made of PPR material, and the sealing filler is a flame retardant filling glue.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model supports the inner sheath through a cross fixing frame, and connects and reinforces the shielding sleeve through a reinforced connecting block, so that the internal wire core can be effectively protected, the protective performance of the cable is improved, and the service life of the cable is extended.

[0015] 2. The utility model performs triple fire protection through a fireproof inner layer, a fireproof middle layer and a fireproof outer layer, so that when the cable contacts a fire source, fire protection operations can be performed layer by layer, which can effectively prevent the wire core inside the cable from being affected by the fire, thereby improving the fire resistance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of the local structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the reinforcing component of the utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the local structure of the heat-resistant composite layer of the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the local structure of the fireproof composite layer of the utility model.

[0021] In the figure: 1. inner sheath; 2. reinforcement component; 21. cross fixing frame; 22. wire core; 23. reinforcement connection block; 24. shielding sleeve; 3. waterproof sheath; 4. heat-resistant composite layer; 41. thermal insulation inner layer; 42. thermal insulation outer layer; 5. fireproof composite layer; 51. fireproof inner layer; 52. fireproof middle layer; 53. fireproof outer layer; 6. sealing filler; 7. reinforcement ribs. DETAILED DESCRIPTION

[0022] See also Figure 1-Figure 5A fireproof cable, comprising an inner sheath 1, a reinforcing component 2 is fixedly installed in the inner cavity of the inner sheath 1, the reinforcing component 2 comprises a cross fixing frame 21, a waterproof sheath 3 is sleeved and installed on the outer surface of the inner sheath 1, the waterproof sheath 3 is a water blocking tape, which can effectively prevent the external water source from contacting the wire core 22, thereby improving the waterproof ability of the cable, a temperature-resistant composite layer 4 is sleeved and installed on the outer surface of the waterproof sheath 3, the temperature-resistant composite layer 4 comprises a heat-insulating inner layer 41 and a heat-insulating outer layer 42, and a fire-proof composite layer 5 is sleeved and installed on the outer surface of the heat-insulating outer layer 42;

[0023] Please refer to Figure 1 and Figure 2 The cross fixing frame 21 is fixedly installed in the inner cavity of the inner sheath 1. By setting the cross fixing frame 21, the inner sheath 1 can be effectively supported, and the wire core 22 can be protected, effectively preventing the cable from being damaged by heavy pressure or impact during operation, and extending the service life of the cable. The surface of the cross fixing frame 21 is fixedly connected with a reinforcement connection block 23, and a shielding sleeve 24 is fixedly connected between the three reinforcement connection blocks 23 on one side of the cross fixing frame 21. The shielding sleeve 24 is made of steel belt material. By setting the shielding sleeve 24, the wire core 22 can be effectively shielded, preventing the cable from being interfered by external signals during operation, and improving the signal transmission stability of the cable;

[0024] The inner cavity of the shielding sleeve 24 is penetrated by a wire core 22, the number of the wire cores 22 is three, and they are twisted and arranged inside the shielding sleeve 24;

[0025] See also Figure 4 The heat-insulating inner layer 41 is fixedly sleeved on the outer surface of the waterproof sheath 3, and the heat-insulating outer layer 42 is fixedly sleeved on the outer surface of the heat-insulating inner layer 41. The heat-insulating outer layer 42 is made of conductive silicone material, and the heat-insulating inner layer 41 is made of silicate fiber. By arranging the heat-insulating inner layer 41 and the heat-insulating outer layer 42, the cable can be effectively insulated and protected to prevent the internal wire core 22 of the cable from being damaged in cold or hot weather, thereby improving the working stability of the cable and enabling it to adapt to use at different temperatures;

[0026] See also Figure 5 The fireproof composite layer 5 includes a fireproof inner layer 51, which is fixedly sleeved on the outer surface of the heat-insulating outer layer 42, and a fireproof middle layer 52 is fixedly sleeved on the outer surface of the fireproof inner layer 51, and a fireproof outer layer 53 is fixedly sleeved on the outer surface of the fireproof middle layer 52. The fireproof inner layer 51 is a mica tape, the fireproof middle layer 52 is made of silicone rubber, and the fireproof outer layer 53 is made of chloroprene rubber. The three layers of fireproof materials can effectively prevent the cable from spontaneous combustion when exposed to fire.

[0027] See also Figure 1A reinforcing rib 7 is provided between the inner cavity of the inner sheath 1 and the cross fixing frame 21, and the outside of the reinforcing rib 7 is filled with a sealing filler 6;

[0028] See also Figure 1 The cross fixing frame 21 and the reinforcing ribs 7 are both made of PPR material, and the sealing filler 6 is a flame retardant filling rubber. By setting the sealing filler 6, the position of the reinforcing rib 7 can be positioned and fixed, and at the same time, the impact on the cross fixing frame 21 can be buffered, thereby improving the impact resistance of the cable and providing effective protection for the cable. By setting the reinforcing ribs 7, the strength of the cable can be effectively improved, making the cable not easy to bend and not breaking when subjected to heavy pressure.

[0029] When in use, the inner sheath 1 is supported by the cross fixing frame 21, and the shielding sleeve 24 is connected and reinforced by the reinforcement connecting block 23, so that the internal core 22 can be effectively protected, the protection performance of the cable is improved, and the service life of the cable is extended. The waterproof sheath 3 can provide waterproof protection for the internal core 22, so that when the cable contacts the outside of the water source, the water will not penetrate into the surface of the core 22, effectively avoiding rainwater short circuit in the cable. Through the thermal insulation inner layer 41 and the thermal insulation outer layer 42, the external heat and cold air can be effectively prevented from entering the surface of the core 22, so that the cable 22 is always in a normal temperature working environment. The fireproof inner layer 51, the fireproof middle layer 52 and the fireproof outer layer 53 are used for triple fire protection, so that when the cable contacts the fire source, fire protection operations can be performed layer by layer, which can effectively avoid the core 22 inside the cable from being affected by the fire, thereby improving the fireproof performance of the cable.

[0030] To sum up: the fireproof cable, through the coordinated use of the inner sheath 1, the reinforcement component 2, the waterproof sheath 3, the temperature-resistant composite layer 4, the fireproof composite layer 5, the sealing filler 6 and the reinforcement rib 7, solves the problem that the cable has general strength and may cause the wire core inside the cable to break after being impacted or pressed, thereby affecting the normal operation of the cable and requiring the cable to be replaced, thereby increasing the cost of use.

Claims

1. A fireproof cable, comprising an inner sheath (1), characterized in that: The inner cavity of the inner jacket (1) is fixedly mounted with a reinforcement component (2), the reinforcement component (2) comprises a cross fixing frame (21), the outer surface of the inner jacket (1) is sleeved with a waterproof jacket (3), the outer surface of the waterproof jacket (3) is sleeved with a temperature-resistant composite layer (4), the temperature-resistant composite layer (4) comprises a heat-insulating inner layer (41) and a heat-insulating outer layer (42), and the outer surface of the heat-insulating outer layer (42) is sleeved with a fire-proof composite layer (5).

2. A fireproof cable according to claim 1, characterized in that: The cross fixing frame (21) is fixedly mounted in the inner cavity of the inner sheath (1); a reinforcement connection block (23) is fixedly connected to the surface of the cross fixing frame (21); and a shielding sleeve (24) is fixedly connected between three reinforcement connection blocks (23) located on one side of the cross fixing frame (21).

3. A fireproof cable according to claim 2, characterized in that: A wire core (22) is arranged through the inner cavity of the shielding sleeve (24), and the number of the wire cores (22) is three and they are twisted and arranged inside a shielding sleeve (24).

4. A fireproof cable according to claim 1, characterized in that: The heat-insulating inner layer (41) is fixedly sleeved on the outer surface of the waterproof protective sleeve (3), and the heat-insulating outer layer (42) is fixedly sleeved on the outer surface of the heat-insulating inner layer (41).

5. A fireproof cable according to claim 1, characterized in that: The fireproof composite layer (5) comprises a fireproof inner layer (51), the fireproof inner layer (51) being fixedly sleeved on the outer surface of the heat-insulating outer layer (42), the outer surface of the fireproof inner layer (51) being fixedly sleeved with a fireproof middle layer (52), and the outer surface of the fireproof middle layer (52) being fixedly sleeved with a fireproof outer layer (53).

6. A fireproof cable according to claim 1, characterized in that: A reinforcing rib (7) is provided between the inner cavity of the inner sleeve (1) and the cross fixing frame (21), and the outside of the reinforcing rib (7) is filled with a sealing filler (6).

7. A fireproof cable according to claim 6, characterized in that: The cross fixing frame (21) and the reinforcing ribs (7) are both made of PPR material, and the sealing filler (6) is flame retardant filling glue.

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