High-conductivity high-flame-retardant environment-friendly cable for building

Abstract

The utility model discloses a high conductivity high flame retardant environment-friendly cable for building, which comprises a plurality of cable core units, conductive cores, a fixing piece, an outer insulating layer, a flame retardant block, an armor layer, a fireproof layer and a flame retardant layer, the fixing piece is provided with an accommodating groove for accommodating the cable core units, the fixing piece is also provided with a groove for accommodating the conductive cores, and the outer insulating layer and the flame retardant block are arranged in the accommodating groove. The conductive core is wrapped with a first insulating layer, a cavity is formed between the first insulating layer and the groove wall of the groove, and the cavity is filled with flame-retardant filler. The cable is provided with a fixing part, a flame-retardant block, a fireproof layer and a flame-retardant layer, the fixing part can fix the cable core unit and can protect the cable core unit, and the flame-retardant block is arranged between the outer insulating layer and the fixing part and can further block fire spreading for the fixing part and the cable core unit, so that the service life of the cable is prolonged, and meanwhile, the flame-retardant layer is arranged on the outer insulating layer. And the fireproof layer and the flame-retardant layer can block fire spreading, do not release a large amount of toxic gas and toxic smoke, and have an environment-friendly effect.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular, to a high-conductivity, high-flame-retardant, and environmentally friendly cable for building applications. Background Technology

[0002] With numerous infrastructure and engineering construction projects, the market for fire-resistant and flame-retardant cables presents enormous potential for growth. Globally, the proportion of power system outages caused by power cable fires is on the rise. In existing cables, multiple conductors are separated by a single layer of flexible rubber, which is often too close together. When the conductors heat up, this rubber layer can be damaged, leading to short circuits and shortening the conductors' lifespan. Utility Model Content

[0003] Therefore, it is necessary to provide a high-conductivity, high-flame-retardant, and environmentally friendly cable for building applications that extends the service life of conductors.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a high-conductivity, high-flame-retardant, and environmentally friendly cable for building applications. The high-conductivity, high-flame-retardant, and environmentally friendly cable for building applications includes multiple cable core units, a conductive core, a fixing member for fixing the cable core units and the conductive core, an outer insulation layer disposed outside the fixing member, a flame-retardant block disposed between the outer insulation layer and the fixing member, an armor layer disposed outside the outer insulation layer, a fireproof layer wrapped around the armor layer, and a flame-retardant layer disposed outside the fireproof layer. The fixing member has a receiving groove for accommodating the cable core units and a groove for accommodating the conductive cores. The conductive cores are wrapped with a first insulation layer. There is a cavity between the first insulation layer and the groove wall, and the cavity is filled with flame-retardant filler.

[0005] Furthermore, the storage slot has two slots, which are respectively disposed on two adjacent end faces of the fixing member, and the cross-section of the storage slot is semi-circular.

[0006] Furthermore, the cable core unit includes a cable core and a second insulation layer, the second insulation layer being wrapped around the outside of the cable core.

[0007] Furthermore, a shielding layer is provided between the outer insulation layer and the armor layer, the shielding layer being wrapped around the outside of the outer insulation layer, and the armor layer being wrapped around the outside of the shielding layer.

[0008] Furthermore, a buffer layer is provided between the fireproof layer and the flame-retardant layer, the buffer layer covering the outside of the fireproof layer and the flame-retardant layer covering the outside of the buffer layer.

[0009] Furthermore, the buffer layer is provided with reinforcing cores, and there are multiple reinforcing cores, which are arranged evenly and at equal intervals along the circumference of the buffer layer.

[0010] Furthermore, the flame-retardant layer is covered with an outer protective layer.

[0011] Furthermore, the cable core unit has four.

[0012] Furthermore, the flame-retardant block has a fan-shaped block structure.

[0013] Furthermore, the fastener has a square structure.

[0014] The beneficial effects of this utility model are as follows: The high conductivity and high flame retardant environmentally friendly cable for construction provided by this utility model, by setting a fixing component, a flame retardant block, a fireproof layer and a flame retardant layer, the fixing component can fix the cable core unit while protecting the cable core unit, while the flame retardant block is set between the outer insulation layer and the fixing component, which can further block the spread of fire for the fixing component and the cable core unit, thereby extending the service life of the cable. At the same time, the fireproof layer and the flame retardant layer can block the spread of fire and will not release a large amount of toxic gas and fumes, thus having an environmental protection effect. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a structural schematic diagram of the high conductivity, high flame retardant and environmentally friendly cable for building applications according to this utility model.

[0017] The component names and their numbers in the figure are as follows: 1. Cable core unit; 10. Conductive core; 101. First insulation layer; 102. Flame-retardant filler; 2. Fixing component; 20. Flame-retardant block; 21. Storage groove; 22. Groove; 3. Outer insulation layer; 4. Shielding layer; 5. Armoring layer; 6. Fireproof layer; 7. Buffer layer; 8. Flame-retardant layer; 9. Outer sheath. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] Please see Figure 1This utility model provides a high-conductivity, high-flame-retardant, and environmentally friendly cable for construction, which includes a core unit 1, a fixing member 2, a flame-retardant block 20, an outer insulation layer 3, an armor layer 5, a fireproof layer 6, and a flame-retardant layer 8. Multiple core units 1 are provided. The fixing member 2 is used to fix multiple core units 1. The outer insulation layer 3 is disposed outside the fixing member 2. The flame-retardant block 20 is disposed between the fixing member 2 and the outer insulation layer 3, and the flame-retardant block 20 has a fan-shaped block structure, thereby increasing the flame-retardant performance of the core unit 1. The armor layer 5 is disposed outside the outer insulation layer 3. The fireproof layer 6 is wrapped around the outer armor layer 5, and the flame-retardant layer 8 is disposed outside the fireproof layer 6. In this embodiment, both the flame-retardant block 20 and the flame-retardant layer 8 are made of low-smoke halogen-free flame-retardant polyolefin material, thereby increasing the flame-retardant performance of the cable. The fireproof layer 6 is made of double-layer mica tape wrapping, which has a small expansion coefficient, high dielectric strength, high resistivity, and uniform dielectric constant. The armor layer 5 is made of flat steel wire stranded together. When the cable is subjected to external pressure, the pressure passes through the armor layer 5, which provides the cable with compressive strength. In other embodiments not shown, the armor layer 5 can also be made of round steel wire, round copper wire, or flat copper wire stranded together. By setting the flame-retardant block 20 and the fixing member 2, the fixing member 2 can fix the cable core unit 1 while protecting it. The flame-retardant block 20 is placed between the outer insulation layer 3 and the fixing member 2, which can prevent the spread of fire between the fixing member 2 and the cable core unit 1, thereby extending the service life of the cable.

[0020] There are multiple fasteners 2, each with a square structure. Each fastener 2 has a storage groove 21. There are two storage grooves 21, which are respectively located on two adjacent end faces of the fastener 2. The cross-section of the storage groove 21 is semi-circular. The cable core unit 1 is located in the storage groove 21 and is located between the two fasteners 2.

[0021] Furthermore, the fastener 2 is provided with a groove 22. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction also includes a conductive core 10, which is used to conduct current and is disposed within the groove 22. The conductive core 10 is wrapped with a first insulating layer 101, and there is a cavity (not shown in the figure) between the first insulating layer 101 and the groove wall of the groove 22. The cavity is filled with flame-retardant filler 102. In this embodiment, the conductive core 10 is made of copper.

[0022] The cable core unit 1 includes a cable core 11 and a second insulation layer 12, which wraps around the outside of the cable core 11. In this embodiment, there are four cable core units 1.

[0023] Furthermore, a shielding layer 4 is provided between the outer insulation layer 3 and the armor layer 5. The shielding layer 4 is wrapped around the outside of the outer insulation layer 3, and the armor layer 5 is wrapped around the outside of the shielding layer 4. The shielding layer 4 is provided to effectively reduce or eliminate interference from external electromagnetic fields, thereby protecting the cable core 11.

[0024] Furthermore, a buffer layer 7 is provided between the fireproof layer 6 and the flame-retardant layer 8. The buffer layer 7 is wrapped around the outside of the fireproof layer 6, and the flame-retardant layer 8 is wrapped around the outside of the buffer layer 7. The buffer layer 7 is provided to increase the cable's cushioning performance. In this embodiment, the buffer layer 7 uses mineral wool as a cushioning material. Mineral wool and its products have advantages such as being lightweight, durable, non-flammable, non-corrosive, and resistant to insects. They are excellent heat insulation and sound absorption materials. Mineral wool is a cotton-like short fiber made from silicate melts, including slag wool, rock wool, glass wool, and ceramic fibers.

[0025] The buffer layer 7 is provided with a reinforcing core (not shown in the figure). There are multiple reinforcing cores, which are arranged evenly and at equal intervals along the circumference of the buffer layer 7, thereby further increasing the compressive strength of the cable.

[0026] Furthermore, the flame-retardant layer 8 is wrapped with an outer protective layer 9, which is made of neoprene rubber. Neoprene rubber has high strength, good durability, excellent wear resistance, flame retardancy, light resistance, ozone resistance and atmospheric aging resistance, and good elasticity, and is resistant to impact and vibration.

[0027] The high-conductivity, high-flame-retardant, and environmentally friendly cable for construction provided by this utility model, through the setting of a fixing component 2, a flame-retardant block 20, a fireproof layer 6, and a flame-retardant layer 8, allows the fixing component 2 to fix and protect the cable core unit 1 at the same time. The flame-retardant block 20 is set between the outer insulation layer 3 and the fixing component 2, which can further block the spread of fire for the fixing component 2 and the cable core unit 1, thereby extending the service life of the cable. At the same time, the fireproof layer 6 and the flame-retardant layer 8 can block the spread of fire and will not release a large amount of toxic gas and fumes, thus having an environmental protection effect.

[0028] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-conductivity, high-flame-retardant, environmentally friendly cable for construction, characterized in that: The high-conductivity, high-flame-retardant, environmentally friendly cable for construction includes multiple cable core units, a conductive core, a fixing member for fixing the cable core units and the conductive core, an outer insulation layer disposed outside the fixing member, a flame-retardant block disposed between the outer insulation layer and the fixing member, an armor layer disposed outside the outer insulation layer, a fireproof layer wrapped around the armor layer, and a flame-retardant layer disposed outside the fireproof layer. The fixing member has a receiving groove for accommodating the cable core units and a groove for accommodating the conductive cores. The conductive cores are wrapped with a first insulation layer. There is a cavity between the first insulation layer and the groove wall, and the cavity is filled with flame-retardant filler.

2. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction as described in claim 1, characterized in that: The storage slot has two slots, which are respectively disposed on two adjacent end faces of the fixing member, and the cross-section of the storage slot is semi-circular.

3. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction as described in claim 1, characterized in that: The cable core unit includes a cable core and a second insulation layer, the second insulation layer being wrapped around the outside of the cable core.

4. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction as described in claim 1, characterized in that: A shielding layer is provided between the outer insulation layer and the armor layer. The shielding layer is wrapped around the outside of the outer insulation layer, and the armor layer is wrapped around the outside of the shielding layer.

5. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction as described in claim 1, characterized in that: A buffer layer is also provided between the fireproof layer and the flame-retardant layer. The buffer layer is wrapped around the outside of the fireproof layer, and the flame-retardant layer is wrapped around the outside of the buffer layer.

6. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction as described in claim 5, characterized in that: The buffer layer is provided with a reinforcing core, and there are multiple reinforcing cores, which are arranged at equal intervals along the circumference of the buffer layer.

7. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction as described in claim 1, characterized in that: The flame-retardant layer is covered by an outer protective layer.

8. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction as described in claim 1, characterized in that: The cable core unit has four.

9. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction as described in claim 1, characterized in that: The flame-retardant block has a fan-shaped block structure.

10. The high-conductivity, high-flame-retardant, environmentally friendly cable for construction as described in claim 1, characterized in that: The fastener has a square structure.

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