CN206249934U - Fire-proof high-temperature resistant cable - Google Patents

Abstract

The utility model discloses a fire-proof and high-temperature-resistant cable, which sequentially comprises a conductor, a first insulating layer, an asbestos fiber layer, a second insulating layer and a fireproof casing from inside to outside, and the conductor is covered with the first insulating layer , the asbestos fiber layer is woven from asbestos fibers arranged longitudinally and transversely, the second insulating layer is a polyethylene sleeve, and the fireproof sleeve includes a bulky glass fiber layer and The fiber layer is covered with an iron oxide red silica gel layer. The utility model is a fire-proof and high-temperature-resistant cable with good electrical insulation and flame retardancy.

Description

Fireproof and high temperature resistant cable

technical field

The utility model relates to the technical field of wires and cables, in particular to a fireproof and high temperature resistant cable with good electrical insulation and flame retardancy.

Background technique

With the continuous improvement of people's living standards, the decoration requirements for people's environments such as workplaces, shopping malls, and residences have also increased accordingly, and there are more and more electrical equipment, including some high-power electrical equipment. Inflammable substances such as wood are often used as decoration materials. More electrical equipment will increase the current passing through the wires, and when the current of the wires increases, it will easily cause the heat generated by the wires to increase. If the heat cannot be dissipated well, it will easily cause a fire. In this case, it is usually necessary to thicken the conductor of the wire, and to modify the sheath outside the conductor. In addition, if a fire occurs in the environment where the wire is located, if the wire has good flame retardancy, it can effectively prevent the fire from damaging the wire and avoid greater losses.

Therefore, there is an urgent need for a fireproof and high temperature resistant cable with good electrical insulation and flame retardancy.

Utility model content

The purpose of the utility model is to provide a fire-resistant and high-temperature-resistant cable with good electrical insulation and flame retardancy.

In order to achieve the above purpose, the technical solution provided by the utility model is as follows: the utility model discloses a fireproof and high temperature resistant cable, which sequentially includes a conductor, a first insulating layer, an asbestos fiber layer, a second insulating layer and a fireproof sheath from inside to outside pipe, the conductor is covered with the first insulation layer, the asbestos fiber layer is braided by longitudinally and transversely arranged asbestos fibers, the second insulation layer is a polyethylene sleeve, and the fireproof sleeve includes A bulky glass fiber layer and an iron oxide red silica gel layer covering the bulky glass fiber layer.

The first insulating layer includes a polypropylene layer and a Teflon layer covering the polypropylene layer.

The conductor is formed by several copper cores wound with each other.

The copper core is a nickel-plated copper core.

The copper core is tinned copper core.

The thickness of the first insulating layer is 0.3-0.5 mm, and the thickness of the second insulating layer is 0.7-1 mm.

The outer wall of the iron oxide red silica gel layer is coated with a reflective paint layer along the length direction of the conductor.

Compared with the prior art, in the fireproof and high temperature resistant cable of the present invention, the first insulating layer includes a polypropylene layer and a Teflon layer coated outside the polypropylene layer, and the asbestos fiber layer is composed of It is braided by several asbestos fibers arranged longitudinally and transversely, and the second insulating layer is a polyethylene sleeve. The Teflon layer has excellent resistance to acid and alkali and various organic solvents, while the asbestos fiber layer has excellent fire resistance and high temperature resistance and can withstand various impacts. In addition, the bulky glass fiber layer has Good fire performance, the iron oxide red silica gel layer has good water sealing performance and high temperature resistance.

The utility model will become clearer through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the utility model.

Description of drawings

Fig. 1 is a schematic diagram of an embodiment of a section of a fireproof and high temperature resistant cable of the present invention.

Fig. 2 is a schematic diagram of the external structure of the fireproof and high temperature resistant cable shown in Fig. 1 .

detailed description

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements. As mentioned above, as shown in Fig. 1, the fireproof and high temperature resistant cable 100 disclosed by the embodiment of the present utility model sequentially includes a conductor 1, a first insulating layer 2, an asbestos fiber layer 3, a second insulating layer 4 and a fireproof The sleeve 6, the conductor 1 is covered with the first insulating layer 2, and the first insulating layer 2 includes a polypropylene layer 21 and a Teflon layer 22 wrapped outside the polypropylene layer 21, so The asbestos fiber layer 3 is braided by asbestos fibers arranged longitudinally and transversely, the second insulating layer 4 is a polyethylene sleeve, and the fireproof sleeve 6 includes a bulky glass fiber layer 61 and the bulky fiberglass layer 61. The permanent glass fiber layer 61 is covered with an iron oxide red silica gel layer 62. It should be noted that the Teflon layer 22 is formed by coating Teflon emulsion on the outside of the polypropylene layer 21 and drying.

In one implementation, as shown in FIG. 1 , the conductor 1 is formed by seven copper cores wound with each other.

In one embodiment, the copper core is a nickel-plated copper core.

In one embodiment, the copper core is a tinned copper core.

In one embodiment, as shown in FIG. 1 , the thickness of the first insulating layer 2 is 0.3-0.5 mm, and the thickness of the second insulating layer 4 is 0.7-1 mm.

In one embodiment, as shown in FIG. 2 , the outer wall of the iron oxide red silica gel layer 62 is coated with a reflective paint layer 5 along the length direction of the conductor. Through the reflective paint layer 5, it can be easily found in the state of poor light and play a warning role.

Compared with the prior art, referring to Figs. 1 and 2, in the fireproof and high temperature resistant cable 100 of the present invention, the first insulating layer 2 includes a polypropylene layer 21 and a special material coated outside the polypropylene layer 21 Teflon layer 22, the asbestos fiber layer 3 is woven from asbestos fibers arranged vertically and horizontally, the Teflon layer 22 has excellent acid and alkali resistance and various organic solvent resistance, and the asbestos fiber layer 3 It has excellent fire resistance and high temperature resistance and can withstand various impacts. In addition, the bulky glass fiber layer 61 has good fire resistance, and the iron oxide red silica gel layer 62 has good water sealing performance and high temperature resistance. .

What is disclosed above is only the preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, the equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (7)

1. A fire-resistant and high-temperature-resistant cable, characterized in that it comprises a conductor, a first insulating layer, an asbestos fiber layer, a second insulating layer and a fireproof sleeve from the inside to the outside, and the conductor is covered with the first insulating layer. layer, the asbestos fiber layer is woven from asbestos fibers arranged longitudinally and transversely, the second insulating layer is a polyethylene sleeve, and the fireproof sleeve includes a bulky glass fiber layer and the bulky The glass fiber layer is covered with an iron oxide red silica gel layer. 2. The fireproof and high temperature resistant cable according to claim 1, characterized in that, the first insulating layer comprises a polypropylene layer and a Teflon layer covering the polypropylene layer. 3. The fireproof and high temperature resistant cable according to claim 1, characterized in that, the conductor is formed by several copper cores wound with each other. 4. The fireproof and high temperature resistant cable according to claim 3, wherein the copper core is a nickel-plated copper core. 5. The fireproof and high temperature resistant cable according to claim 3, wherein the copper core is a tinned copper core. 6. The fire-proof and high-temperature resistant cable according to any one of claims 1-5, characterized in that, the thickness of the first insulating layer is 0.3-0.5 mm, and the thickness of the second insulating layer is 0.7-1 mm . 7. The fireproof and high temperature resistant cable according to claim 1, characterized in that, the outer wall of the iron oxide red silica gel layer is coated with a reflective paint layer along the length direction of the conductor.