Low-smoke halogen-free flame-retardant special wire cable

Abstract

The utility model relates to the technical field of wires and cables, in particular to a low-smoke halogen-free flame-retardant special wire and cable, which comprises a wire core and a cable base layer, the outer wall of the wire core is connected with the cable base layer, a protection structure is arranged on the outer side of the cable base layer, and the protection structure comprises a supporting assembly. The inner wall of the supporting assembly is bonded with the cable base layer, and the outer wall of the supporting assembly is bonded with the protection assembly. The supporting assembly is made of butadiene rubber and has good cold resistance, wear resistance and rebound resilience, the outer wall of the supporting assembly is bonded with the protection assembly, the protection assembly is made of a silicon rubber material, the silicon rubber material is a rubber material with excellent elasticity and compressibility, and when extruded by external force, the supporting assembly is not prone to deformation. Through the high elasticity of the protection assembly and the supporting assembly, the mechanical energy of external force is buffered, and the situation that the wire core is damaged and broken is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, in particular to a low-smoke, halogen-free and flame-retardant special electric wire and cable. Background Art

[0002] Wires and cables mainly include bare wires, magnet wires, insulated wires for motors and electrical appliances, power cables, communication cables and optical cables.

[0003] For example, the wire and cable with authorization announcement number CN206075887U forms an electromagnetic shield by setting a conductive paint inside the isolating plastic, so that adjacent conductors will not be affected by electromagnetic interference, and the wire and cable can be used normally. And there is no need to additionally coat the conductor with insulating material, which effectively reduces the amount of materials used and reduces costs. By setting a waterproof layer, it can effectively prevent leakage after the polyvinyl chloride insulation layer is broken. However, during the use of the wire and cable in the above document, the outside of the wire and cable in the above document lacks a protective structure, which makes it easy for the wire and cable in the above document to be squeezed by external force. The pressure of the external objects in the above document is easy to cause the wire and cable in the above document to be affected, which is easy to cause the wire core inside the wire and cable to deform, and thus easily cause the wire core to break, thereby affecting the power transmission efficiency of the wire and cable in the above document;

[0004] At the same time, during the use of the above-mentioned wires and cables, due to the lack of flame retardant structure of the wires and cables in the above-mentioned documents, the flame retardant performance of the wires and cables is poor. When a fire occurs inside the working environment of the wires and cables, the fire can easily spread to the wires and cables, causing the wires and cables to burn, which not only causes damage to the wires and cables, but also generates a lot of smoke and dust during the burning process of the wires and cables, affecting the surrounding environment and causing pollution. Utility Model Content

[0005] The utility model aims to solve the problem that the existing wires and cables are prone to breakage of the wire core when squeezed by external force and the problem that the existing wires and cables have poor flame retardancy, and proposes a low-smoke halogen-free flame retardant special wire and cable.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A low-smoke, halogen-free, flame-retardant special wire and cable is designed, comprising a wire core and a cable base layer, wherein the outer wall of the wire core is connected to the cable base layer, a protective structure is arranged on the outer side of the cable base layer, and the protective structure comprises a supporting component, an inner wall of the supporting component is bonded to the cable base layer, and an outer wall of the supporting component is bonded to the protective component.

[0008] Preferably, the outer walls of the plurality of cable base layers are fixedly connected to the bracket.

[0009] Preferably, the interior of the support assembly is filled with support filler.

[0010] Preferably, the outer wall of the protective component is wrapped with a steel belt.

[0011] Preferably, the outer wall of the steel belt is provided with a flame retardant structure, the flame retardant structure comprises a thermal insulation layer, the inner wall of the thermal insulation layer is bonded to the steel belt, and the outer wall of the thermal insulation layer is bonded to the flame retardant component.

[0012] The utility model proposes a low-smoke, halogen-free, flame-retardant special wire and cable, which has the following beneficial effects: the material of the supporting component is butadiene rubber, which has good cold resistance, wear resistance and resilience, the outer wall of the supporting component is bonded to the protective component, and the material of the protective component is silicone rubber material, which is a rubber material with excellent elasticity and compressibility. When squeezed by external force, the high elasticity of the protective component and the supporting component itself can buffer the mechanical energy of the external force, thereby avoiding damage and breakage of the wire core;

[0013] The material of the insulation layer is thermal insulating silicone, which prevents the high temperature of the fire from being transferred to the inside of the wire core through heat transfer, causing the internal structure to be affected by the high temperature and become aged and damaged. The material of the flame retardant structure is halogen-free flame retardant TPE, which makes the wires and cables have a certain flame retardant effect and produces less smoke when the wires and cables burn. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 2 The structural diagram of A in the figure;

[0016] Figure 3 for Figure 2 A schematic diagram of the front and side view structure of FIG.

[0017] Figure 4 for Figure 3 Schematic diagram of the structure of B.

[0018] In the figure: 1. wire core, 2. cable base layer, 3. protective structure, 301. supporting component, 302. protective component, 4. flame retardant structure, 4a1. thermal insulation layer, 4a2. flame retardant component, 4b1. wear-resistant strip, 5. supporting filler, 6. bracket, 7. steel belt. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Embodiment 1:

[0021] Refer to the attached Figure 1-4In the present embodiment, a low-smoke, halogen-free, flame-retardant special wire and cable comprises a wire core 1 and a cable base 2. The outer wall of the wire core 1 is connected to the cable base 2. A protective structure 3 is arranged on the outer side of the cable base 2. The protective structure 3 comprises a supporting component 301. The inner wall of the supporting component 301 is bonded to the cable base 2. The material of the supporting component 301 is butadiene rubber, which has good cold resistance, wear resistance and resilience. The outer wall of the supporting component 301 is bonded to the protective component 302. The material of the protective component 302 is silicone rubber material. Silicone rubber is a rubber material with excellent elasticity and compressibility. When squeezed by external force, the high elasticity of the protective component 302 and the supporting component 301 itself can buffer the external mechanical energy to avoid damage and breakage of the wire core 1. The material of the supporting filler 5 is polyurethane material. The outer walls of multiple cable bases 2 are fixedly connected to the bracket 6. The interior of the supporting component 301 is filled with supporting filler 5. The outer wall of the protective component 302 is wrapped with a steel belt 7.

[0022] The outer wall of the steel strip 7 is provided with a flame retardant structure 4, which includes a thermal insulation layer 4a1. The inner wall of the thermal insulation layer 4a1 is bonded to the steel strip 7. The material of the thermal insulation layer 4a1 is thermal insulation silicone to prevent the high temperature of the fire from being transferred to the inside of the wire core through heat transfer, causing the internal structure to be affected by the high temperature and aging and damage. The material of the flame retardant structure 4a2 is halogen-free flame retardant TPE, so that the wires and cables have a certain flame retardant effect, and the smoke is low when the wires and cables burn. The outer wall of the thermal insulation layer 4a1 is bonded to the flame retardant component 4a2.

[0023] Working principle:

[0024] The material of the support component 301 is butadiene rubber, which has good cold resistance, wear resistance and resilience. The outer wall of the support component 301 is bonded to the protective component 302. The material of the protective component 302 is silicone rubber material. Silicone rubber is a rubber material with excellent elasticity and compressibility. When squeezed by external force, the high elasticity of the protective component 302 and the support component 301 itself can buffer the external mechanical energy, thereby avoiding damage and breakage of the wire core 1.

[0025] The material of the thermal insulation layer 4a1 is thermal insulation silicone, which prevents the high temperature of the fire from being transferred to the inside of the wire core through heat transfer, causing the internal structure to be affected by the high temperature and become aged and damaged. The material of the flame retardant structure 4a2 is halogen-free flame retardant TPE, which makes the wires and cables have a certain flame retardant effect and produces less smoke when the wires and cables burn.

[0026] Embodiment 2:

[0027] See attached Figure 1-4In the present embodiment, a low-smoke halogen-free flame-retardant special wire and cable is provided, wherein the flame-retardant structure 4 may further include wear-resistant strips 4b1, the inner ends of the plurality of wear-resistant strips 4b1 are bonded to the flame-retardant component 4a2, the material of the wear-resistant strips is styrene-butadiene rubber, which has good wear resistance and oil resistance, and the styrene-butadiene rubber material does not contain halogen elements, so that in the event of a fire, the burning of the wear-resistant strips 4b1 will not produce much smoke, and the wear resistance of the wear-resistant strips 4b1 is utilized to reduce the wear of the flame-retardant component 4a2, thereby protecting the wires and cables.

[0028] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A low-smoke, halogen-free, flame-retardant special wire and cable, comprising a wire core (1) and a cable base layer (2), wherein the outer wall of the wire core (1) is connected to the cable base layer (2), characterized in that: A protective structure (3) is provided on the outer side of the cable base layer (2), and the protective structure (3) comprises a support component (301), an inner wall of the support component (301) is bonded to the cable base layer (2), and an outer wall of the support component (301) is bonded to the protective component (302).

2. The low-smoke, halogen-free, flame-retardant special wire and cable according to claim 1, characterized in that: The outer walls of the plurality of cable base layers (2) are fixedly connected to the bracket (6).

3. The low-smoke, halogen-free, flame-retardant special wire and cable according to claim 2, characterized in that: The interior of the support component (301) is filled with support filler (5).

4. The low-smoke, halogen-free, flame-retardant special wire and cable according to claim 1, characterized in that: The outer wall of the protection component (302) is wrapped with a steel belt (7).

5. The low-smoke, halogen-free, flame-retardant special wire and cable according to claim 4, characterized in that: The outer wall of the steel strip (7) is provided with a flame retardant structure (4), and the flame retardant structure (4) comprises a thermal insulation layer (4a1), the inner wall of the thermal insulation layer (4a1) is bonded to the steel strip (7), and the outer wall of the thermal insulation layer (4a1) is bonded to the flame retardant component (4a2).

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