CN205303019U - Strenghthened type aluminum alloy resistance to compression cable - Google Patents

Abstract

The utility model discloses a strenghthened type aluminum alloy resistance to compression cable, including tubulose aluminum alloy conductor, be equipped with the compound core of strengthening of carbon fiber at tubulose aluminum alloy conductor's center, be equipped with the thin copper area between compound enhancement core of carbon fiber and tubulose aluminum alloy conductor, extruded insulation layer outside tubulose aluminum alloy conductor, the winding comprises on the single line layer that forms of winding side by side many conductive single wire outside the insulating layer, around package buffer layer and oversheath outside the single line layer, still be equipped with metal pressure -resisting pipe between buffer layer and oversheath, the utility model discloses having compressive strength height, mechanical strength, high, dampproofing and the leakproofness is good, the bendability is good, the cost is reduced, prolonged life.

Description

A reinforced aluminum alloy compression cable

technical field

The utility model relates to the field of cables, in particular to a reinforced aluminum alloy pressure-resistant cable.

Background technique

As we all know, conventional aluminum alloy cables usually use AA8000 series aluminum alloy stranded wire as the conductor, and the insulation layer is extruded outside the conductor, while the traction strength of the aluminum alloy cable is 53MPa, which is far lower than the 70MPa of the copper conductor cable; Breakage occurs.

In the prior art, the support frame is used to support the cable, and the coaxial cable is protected by adding a support frame, which has a certain effect, but increases the laying cost and time, and the cable itself has poor load-bearing performance, and it is inevitable during the construction process. The core of the cable is damaged due to careless operation.

In recent years, cable companies have generally realized the shortcomings of this aluminum alloy cable itself, and are constantly exploring and improving.

Utility model content

The utility model aims to provide a reinforced aluminum alloy anti-pressure cable with high compressive strength, high mechanical strength, good moisture resistance, good sealing performance, good bendability, reduced cost and prolonged service life.

In order to solve the above technical problems, a reinforced aluminum alloy pressure-resistant cable described in the utility model includes a tubular aluminum alloy conductor, and a carbon fiber composite reinforcing core is arranged at the center of the tubular aluminum alloy conductor. There is a thin copper strip between the alloy conductors; an insulating layer is extruded outside the tubular aluminum alloy conductor, and a single-wire layer composed of multiple conductive single-wires wound in parallel is wound outside the insulating layer; a buffer layer and an outer layer are wrapped around the single-wire layer. Sheath; there is also a metal pressure-resistant pipe between the buffer layer and the outer sheath.

The carbon fiber composite reinforcing core is formed by bonding or twisting a plurality of thin carbon fiber composite filaments.

The metal pressure-resistant pipe is a hard pressure-resistant pipe wrapped around or longitudinally.

The beneficial effect of the utility model waterproof armored cable lies in:

1. Increase the tensile strength of the aluminum alloy cable itself to the equivalent level of the copper conductor with the same cross-section, effectively solving the problem of the cable being broken;

2. Compared with copper cables, it reduces material costs and saves copper resources; compared with aluminum cables, it increases tensile strength, thermal stability and other indicators; greatly prolongs the safe service life of cables;

3. There is also a metal anti-pressure tube between the buffer layer and the outer sheath, which makes the cable have high mechanical strength, good compression performance, moisture-proof and sealing performance, and embossing can improve its bending performance;

4. The single-wire layer is equivalent to an outer conductor, so that the inner and outer conductors are in the concentric position, and the electromagnetic energy is limited to propagate in the medium between the inner and outer conductors, so it has small attenuation and high shielding performance;

5. The use of a tubular inner conductor can save metal materials and reduce the weight of the cable. Under high power and high frequency, due to the skin effect, the current actually flows along a very thin layer of the conductor surface. The skin depth of the current is large, and its radio frequency resistance is actually exactly the same as that of a solid conductor.

Description of drawings

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

detailed description

Below in conjunction with accompanying drawing, the utility model is further elaborated.

As shown in Figure 1, a reinforced aluminum alloy compression cable of the present invention includes a tubular aluminum alloy conductor 3, and a carbon fiber composite reinforcing core 1 is arranged at the center of the tubular aluminum alloy conductor 3, so that the aluminum alloy cable itself can resist The tensile strength is increased to the equivalent level of copper conductors of the same cross-section, which effectively solves the problem of cable being broken; a thin copper strip 2 is provided between the carbon fiber composite reinforcing core 1 and the tubular aluminum alloy conductor 3; The insulating layer 4 is extruded, and the insulating layer 4 is wound with a single wire layer formed by winding a plurality of conductive single wires 5 in parallel; the buffer layer 6 and the outer sheath 8 are wrapped around the single wire layer; the buffer layer 6 and the outer sheath 8 is also provided with a metal anti-pressure pipe 7, so that the mechanical strength of the cable is high, the compression performance is good, the moisture-proof and the sealing performance are good, and the embossing can improve its bending performance.

The manufacturing method of the reinforced aluminum alloy cable of the utility model is to place the carbon fiber composite core at the center of the stranded conductor or at any position in the stranded layer. The composite reinforcing core can be solid or a plurality of fine carbon fiber composite tows. The carbon fiber filaments can be placed in a fixed position, or a plurality of thin carbon fiber composite filaments can be placed in different positions according to the needs (for example, dispersed to the gap where the single filaments are twisted); continue to twist Aluminum alloy monofilament, the stranding direction of adjacent layers of aluminum alloy monofilament should be opposite, the single wire diameter and number of single wire of aluminum alloy conductor can be determined according to the power system or meet the requirements of conductor resistance and other electrical requirements in relevant standards, Finally, the insulating layer is extruded to achieve a good combination between the carbon fiber composite reinforcing core and the aluminum alloy monofilament, so as to achieve the aforementioned purpose of the invention.

Above-mentioned is only the preferred implementation mode of the present utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the premise of the principle of the present utility model, some improvements and adjustments can also be made, and these improvements and adjustments are also It should be regarded as the protection scope of the present utility model.

Claims (3)

1. A reinforced aluminum alloy compression cable, characterized in that it includes a tubular aluminum alloy conductor (3), and a carbon fiber composite reinforcing core (1) is arranged in the center of the tubular aluminum alloy conductor (3), and the carbon fiber composite reinforcing core A thin copper strip (2) is provided between (1) and the tubular aluminum alloy conductor (3); an insulating layer (4) is extruded outside the tubular aluminum alloy conductor (3), and a plurality of wires are wound outside the insulating layer (4). The single-wire layer is composed of conductive single wires (5) wound side by side; the buffer layer (6) and the outer sheath (8) are wrapped around the single-wire layer; Metal anti-pressure pipe (7) is arranged. 2. The reinforced aluminum alloy anti-pressure cable according to claim 1, characterized in that: the carbon fiber composite reinforcing core (2) is made of a plurality of fine carbon fiber composite filaments bundled or stranded. 3. The reinforced aluminum alloy anti-pressure cable according to claim 1, characterized in that: the metal anti-pressure pipe (7) is a hard anti-pressure pipe wrapped around or longitudinally.