CN205028682U - Aluminum alloy core rubber cover flexible cable - Google Patents

Abstract

The utility model discloses a flexible cable with an aluminum alloy core and a rubber sheath, which relates to the technical field of cable manufacturing. An aluminum alloy core rubber-sheathed flexible cable includes a plurality of cable cores and an insulating and protective outer layer, the insulating and protective outer layer is wrapped around the plurality of cable cores, and fillers are arranged between the plurality of cable cores; The cable core includes an aluminum alloy conductor and an insulating layer from the inside to the outside, and the insulating and protective outer layer includes a tape layer, an inner sheath and an outer sheath in sequence from the inside to the outside. The utility model has environmental resistance properties such as tensile resistance, compression resistance, corrosion resistance and creep resistance, high safety, long service life and low cost, and can be widely used in various electrical equipment in coal mines, ports, ships and other industries .

Description

An aluminum alloy core rubber sheath flexible cable

technical field

The utility model belongs to the technical field of cable manufacturing, in particular to an aluminum alloy core rubber sheath flexible cable.

Background technique

Rubber sheathed cables are widely used in various electrical equipment, including coal mines, ports, ships and other industries. They are installed indoors and outdoors, and the working environment is complicated. , grinding, etc. Ordinary rubber-sheathed cables are easily scrapped due to quality defects such as sheath cracking and conductor strand breakage caused by mechanical damage. In order to prolong the life of the cable, according to the classification of the use occasion, some ordinary rubber-sheathed cables even stipulate that the sheath thickness is 7.5-7.8mm, which seriously causes waste of materials and makes laying difficult.

At present, the manufacturing technology of aluminum alloy wires in China is gradually becoming mature, and the country is vigorously promoting the substitution of aluminum for copper in plastic insulated power cables in order to achieve more optimization of resources. At present, domestic rubber-sheathed cables basically use copper cores. The price of copper is much higher than that of aluminum. It is also necessary to promote the use of aluminum instead of copper to save copper resources.

Utility model content

The technical problem to be solved by the utility model is to provide an environment-resistant performance such as tensile resistance, compression resistance, corrosion resistance and creep resistance, high safety, long service life, low cost, and good environmental resistance performance that can replace copper cores. A kind of aluminum alloy core rubber sheath flexible cable.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:

An aluminum alloy core rubber-sheathed flexible cable is characterized in that it includes a plurality of cable cores and an insulating and protective outer layer, and the insulating and protective outer layer is wrapped around a plurality of cable cores, between the plurality of cable cores A filler is provided; the cable core includes an aluminum alloy conductor and an insulating layer from the inside to the outside, and the insulating and protective outer layer includes a tape layer, an inner sheath and an outer sheath from the inside to the outside in sequence.

A further technical solution is: the aluminum alloy conductor adopts multi-strand aluminum alloy single wire twisted in the same direction and multiple twisted structure, and the aluminum alloy single wire is made of 8000 series aluminum alloy material.

A further technical solution is that: the insulating layer and the inner sheath are made of a rubber mixture, the insulating layer is extruded from EPDM rubber, and the inner sheath is extruded from chlorinated polyethylene.

A further technical solution is that: the outer sheath is made of 5000 series aluminum alloy belt interlocking armor.

A further technical solution is: there are two or more cable cores.

The beneficial effects produced by adopting the above-mentioned technical scheme are:

It ensures the flexibility, bending resistance and creep resistance of the cable. Under the same current carrying capacity, the weight is about half of the copper conductor, and the price is low, which reduces the cost of the cable; it ensures that the cable can withstand the strong destructive force of the outside world. Even when the cable is subjected to greater pressure and impact, the cable is not easily broken down, which improves the safety performance and has a long service life. At the same time, after using interlocking armor as the outer sheath, the thickness of the rubber sheath is reduced to 2.0-2.5 mm, save the amount of rubber, and the cable bending radius is not less than 6D, high flexibility, easy installation and use; replacing copper core cables with aluminum alloy core cables is in line with the industrial development plan of the cable industry to replace copper with aluminum, and can alleviate The degree of tightness of national copper resources.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

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

Among them: 1-aluminum alloy conductor, 2-insulation layer, 3-filler, 4-tape layer, 5-inner sheath, 6-outer sheath.

detailed description

Below in conjunction with the accompanying drawings in the utility model embodiment, the technical solution in the utility model embodiment is clearly and completely described, obviously, the described embodiment is only a part of the utility model embodiment, rather than all implementation example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the following description, a lot of specific details have been set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways that are different from those described here, and those skilled in the art can do so without violating the connotation of the utility model. Under the circumstances, similar promotion is done, so the utility model is not limited by the specific embodiments disclosed below.

As shown in Figure 1, an aluminum alloy core rubber-sheathed flexible cable includes a plurality of cable cores and an insulating and protective outer layer, and the insulating and protective outer layer is wrapped around a plurality of cable cores. There is a filler 3 between them; the cable core includes an aluminum alloy conductor 1 and an insulating layer 2 from the inside to the outside, and the insulating and protective outer layer includes a tape layer 4, an inner sheath 5 and an outer sheath from the inside to the outside in sequence. sheath6.

It is further preferred that: the aluminum alloy conductor 1 adopts a multi-strand aluminum alloy single wire twisted in the same direction and multi-twisted structure, and the aluminum alloy single wire is made of 8000 series aluminum alloy material. The insulating layer 2 and the inner sheath 5 are made of rubber mixture, the insulating layer 2 is extruded from EPDM rubber, and the inner sheath 5 is extruded from chlorinated polyethylene. The outer sheath 6 is made of 5000 series aluminum alloy with interlocking armor.

Further preferably, there are two or more cable cores.

Considering that the aluminum alloy conductor 1 adopts a 5-type conductor structure, multi-strand aluminum alloy single wires are twisted in the same direction and a double twisted structure, the pitch of the twisted strands and the double twisted strands should be controlled within a certain range, and the strands twisted and the double twisted The twisting direction is the same, so that when the cable is bent and pulled, due to the flexibility and ductility of the cable, the conductor is less stressed and the core conductor is effectively prevented from being pulled and bent.

The utility model adopts the 8000 series aluminum alloy material containing rare earth and iron as the conductor, and the 5-type conductor structure, same-direction strand twisting and double twisting ensure the flexibility, bending resistance and creep resistance of the cable. Under the same current carrying capacity, the weight of the aluminum alloy conductor required is about half of that of the copper conductor, and the price of the aluminum alloy conductor is low, which reduces the cable cost. At the same time, the use of aluminum alloy core cables to replace copper core cables is in line with the industrial development plan of the cable industry to replace copper with aluminum, and can alleviate the shortage of copper resources in the country.

The utility model adopts 5000 series aluminum alloy tape interlocking armor, the cable interlocking armoring with a conductor cross section of 35mm2 or less can withstand pressure up to ^4500N , and the cable interlocking armoring with a conductor cross section of ^35mm2 or above can reach 9000N, ensuring This ensures that the cable can withstand strong destructive force from the outside. Even when the cable is subjected to greater pressure and impact, the cable is not easy to be broken down, which improves the safety performance and has a long service life. At the same time, after the interlocking armor is used as the outer sheath, the thickness of the rubber sheath can be reduced from 7.5 to 7.8mm to 2.0 to 2.5mm, saving rubber consumption.

The aluminum alloy core adopts a 5-type conductor structure, and the outer sheath adopts an interlocking armored structure. The bending radius of the cable is not less than 6D. It has high flexibility and is easy to install, construct and use.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

Claims (5)

1. An aluminum alloy core rubber-sheathed flexible cable is characterized in that: it comprises a plurality of cable cores and an insulating protective outer layer, and the insulating protective outer layer is wrapped around the outside of a plurality of cable cores. There is a filler (3) between them; the cable core includes an aluminum alloy conductor (1) and an insulating layer (2) from the inside to the outside, and the insulating and protective outer layer includes a tape layer (4) from the inside to the outside ), inner sheath (5) and outer sheath (6). 2. An aluminum alloy core rubber-sheathed flexible cable according to claim 1, characterized in that: the aluminum alloy conductor (1) adopts a multi-strand aluminum alloy single wire twisted in the same direction and a double twisted structure, and the aluminum alloy single wire is composed of Made of 8000 series aluminum alloy material. 3. An aluminum alloy core rubber-sheathed flexible cable according to claim 1, characterized in that: the insulating layer (2) and the inner sheath (5) are made of rubber mixture, and the insulating layer (2) is made of ternary Ethylene-propylene rubber is extruded and formed, and inner sheath (5) is formed by extruding rubber of chlorinated polyethylene. 4. An aluminum alloy core rubber-sheathed flexible cable according to claim 1, characterized in that: the outer sheath (6) is made of 5000 series aluminum alloy belt interlocking armor. 5. An aluminum alloy core rubber-sheathed flexible cable according to any one of claims 1-4, characterized in that there are two or more cable cores.