CN202102769U - Weatherproof environment-friendly cable for tropical region - Google Patents

Abstract

The utility model discloses a weather-resistant and environment-friendly cable for use in tropical areas, which comprises several conductors, each of which is wrapped with an insulating layer, and the several conductors wrapped with the insulating layer are twisted into bundles to form a multi-core cable core. The outer side is wrapped with a wrapping layer composed of water-blocking wrapping tape. Between the wrapping layer and several conductors, there is a filler core with water-blocking yarn and water-blocking tape twisted into bundles. The outside of the wrapping layer is wrapped in turn. There are a braiding layer, an inner sheath layer, an armor layer, and an outer sheath layer. The inner and outer walls of the inner sheath layer are provided with strip-shaped raised anti-skid patterns. The utility model has the characteristics of compact structure, heat and humidity resistance, aging resistance, sunlight resistance, mildew resistance, softness and environmental protection, which is beneficial to cable laying and installation, adapts to the harsh environment in tropical regions, and can be environmentally safe.

Description

A weather-resistant and environment-friendly cable for tropical areas

Technical field:

The utility model relates to the field of wires and cables, in particular to a weather-resistant and environment-friendly cable for tropical areas.

Background technique:

The structure of cables in tropical areas: there are copper conductors, insulation layers, shielding layers, armor layers, sheaths, etc. inside. Traditional cables of this type are made of plastic or fluoroplastic materials for their insulating layer and sheath layer, which often contain fluorine, chlorine, nitrogen, lead, cadmium, etc., and produce a large amount of smoke, dioxin, acid gas and other public hazards when burning .

At present, with the development of science and technology and the strengthening of environmental protection concepts, cable manufacturers are forced to replace traditional materials with materials that meet environmental protection requirements to manufacture environmentally friendly cables or so-called "clean cables". The particularity of the climate and environment in tropical areas requires cables to have the characteristics of heat and humidity resistance, aging resistance, sunlight resistance, mildew resistance, softness and environmental protection, etc., to ensure the safety of use. However, currently used materials are difficult to fully satisfy the above requirements at the same time.

On the other hand, the structure of traditional cables in tropical regions is not compact enough, so that the service life of the cables is relatively short, and the frequency of replacement is relatively high.

Utility model content:

The purpose of this utility model is to provide a weather-resistant and environment-friendly cable for tropical areas, which has compact structure, has the characteristics of heat and humidity resistance, aging resistance, sunlight resistance, mildew resistance, softness and environmental protection, etc., so as to adapt to the harsh environment in tropical areas, and can It is environmentally friendly and safe.

The technical scheme of the utility model is as follows:

The weather-resistant and environment-friendly cable used in tropical areas includes several conductors, which are respectively wrapped with insulating layers. The wrapping layer is composed of water-blocking wrapping tape. Between the wrapping layer and several conductors, there is a filler core with water-blocking yarn and water-blocking tape twisted into bundles. The outside of the wrapping layer is wrapped with a braided layer in turn. , an inner sheath layer, an armor layer, and an outer sheath layer, wherein the inner and outer walls of the inner sheath layer are provided with strip-shaped raised anti-skid patterns.

The weather-resistant and environment-friendly cable for tropical areas is characterized in that: the several conductors are bundled/stranded structures of tinned copper wires, and the twisted pitch diameter ratios of the several conductors are all 14-20. The monofilament diameter of the tin-copper wire is 0.2-0.5mm; the elongation of the monofilament at break is not less than 15%.

The weather-resistant and environment-friendly cable for tropical regions is characterized in that: the insulating layer, the inner and outer sheath layers are made of environment-friendly low-halogen and halogen-free modified fluororubber.

The weather-resistant and environment-friendly cable for tropical areas is characterized in that: the braiding layer is made of tinned copper wire, and the armor layer is made of galvanized steel tape.

The weather-resistant and environment-friendly cable for tropical areas is characterized in that: the number of the conductors is 2-48.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. The utility model has high flexibility, and the bending radius is not greater than 2-4 times the outer diameter of the cable, which is beneficial to cable laying and installation;

2. The temperature resistance grade of the finished cable of the utility model reaches 250°C, which improves the carrying capacity and overload capacity of the cable;

3. The insulation and sheath materials in this utility model adopt low-smoke and halogen-free modified fluororubber, which meets the requirements of low smoke, flame retardancy, heat and humidity resistance, aging resistance, sunlight resistance, and mildew resistance;

4. In this utility model, galvanized steel strip is used as the protective layer of the sheath, which can avoid the possibility of direct installation and laying outdoors under sunlight.

5. The utility model is resistant to mineral oil and fuel oil, and its flame retardant oxygen index reaches 48.

Description of drawings:

Fig. 1 is the structural representation of the utility model.

Detailed ways:

Weather-resistant and environment-friendly cables for tropical areas, including several conductors 1, which are respectively wrapped with insulating layers 2, and several conductors 1 wrapped with insulating layers 2 are twisted into bundles to form a multi-core cable core. Wrapped with a wrapping layer 3 composed of water-blocking wrapping tape, between the wrapping layer 3 and several conductors 1, there is a filler core 4 twisted into a bundle of water-blocking yarn and water-blocking tape, and the outside of the wrapping layer 3 is sequentially Wrapped with a braiding layer 5, an inner sheath layer 6, an armor layer 7, and an outer sheath layer 8, the inner and outer walls of the inner sheath layer 6 are provided with strip-shaped raised anti-skid patterns 9, and several conductors 1 are tinned copper The bundle twisted/strand twisted structure of the wire, the twisted pitch ratio of several conductors 1 is 14-20, the single wire diameter of the tinned copper wire is 0.2-0.5mm; the elongation of the single wire is not less than 15%, Insulation layer 2, inner and outer sheath layers 6 and 8 are made of environment-friendly low-halogen and halogen-free modified fluororubber, braiding layer 5 is made of tinned copper wire braiding, and armoring layer 7 is made of galvanized steel tape wrapped around. The number of conductors 1 is 2-48.

Claims (5)

1. A weather-resistant and environment-friendly cable for tropical areas, comprising several conductors, each of which is wrapped with an insulating layer, and the several conductors behind the insulating layer are twisted into bundles to form a multi-core cable core, which is characterized in that: several The outside of the conductor is wrapped with a wrapping layer composed of water-blocking wrapping tape. Between the wrapping layer and several conductors, there is a filler core in which water-blocking yarns and water-blocking tapes are twisted into bundles. The outside of the wrapping layer is sequentially Wrapped with a braiding layer, an inner sheath layer, an armor layer, and an outer sheath layer, the inner and outer walls of the inner sheath layer are provided with strip-shaped raised anti-skid patterns. 2. The weather-resistant and environment-friendly cable for tropical areas according to claim 1, characterized in that: the several conductors are bundled/strand-stranded structures of tinned copper wires, and the twisted section diameter ratio of the several conductors is average. 14-20, the single wire diameter of tinned copper wire is 0.2-0.5mm; the elongation of single wire at break is not less than 15%. 3. The weather-resistant and environment-friendly cable for tropical areas according to claim 1, characterized in that: the insulating layer, the inner and outer sheath layers are made of environment-friendly low-halogen and halogen-free modified fluororubber. 4. The weather-resistant and environment-friendly cable for tropical areas according to claim 1, characterized in that: the braiding layer is made of tinned copper wire, and the armor layer is made of galvanized steel tape. 5. The weather-resistant and environment-friendly cable for tropical areas according to claim 1, characterized in that: the number of said several conductors is 2-48.