CN203311913U - Low-voltage shield aluminum alloy power cable - Google Patents

Abstract

The utility model relates to a low-voltage shielded aluminum alloy power cable. A low-voltage shielded aluminum alloy power cable, comprising an outer sheath, at least one insulated wire core is arranged in the outer sheath, and the insulated wire core includes a conductor core, a conductor shielding layer, and an insulation layer from inside to outside. , an insulating shielding layer and a metal shielding layer, wherein the conductor core is an aluminum alloy conductor core. It can be seen from the above technical scheme that the conductor core of the utility model adopts the aluminum alloy conductor core for cables, which solves the shortcomings of the pure aluminum core in flexibility, creep resistance and corrosion resistance, has strong anti-interference ability, and improves The performance of the cable is improved and the service life is increased.

Description

A low-voltage shielded aluminum alloy power cable

technical field

The utility model relates to the field of wires and cables, in particular to a low-voltage shielded aluminum alloy power cable. the

Background technique

With the rapid development of all walks of life, the application of wire and cable is becoming more and more extensive, and at the same time, higher requirements are placed on the performance of cables in all aspects. At present, the country's copper resources are becoming increasingly tense and on the verge of scarcity, and aluminum has good electrical conductivity, light weight, and low price. It is the general trend to replace copper with aluminum, but ordinary aluminum core cables have poor mechanical properties and corrosion resistance. the

Traditional cables mostly use polyvinyl chloride as the sheath. This material has poor corrosion resistance and is easily damaged by insects such as termites. Once the sheath is bitten by insects, the electrical performance of the cable will deteriorate and the service life will be shortened. And when a fire breaks out, this type of cable is not resistant to high temperature, it is easy to burn and produces a lot of smoke, which affects people's escape, and the manufacture of cables with excellent flame-retardant properties requires relatively high costs. the

When the cable is laid, it will be subjected to various mechanical external forces, such as bending, stretching, twisting, positive pressure, stamping and vibration, etc. All mechanical external forces will cause certain damage to the cable and destroy the cable. structure and its electrical properties. the

Utility model content

The purpose of the utility model is to provide a low-voltage shielded aluminum alloy power cable, which has good performance and low material cost. the

In order to achieve the above purpose, the utility model adopts the following technical solutions: a low-voltage shielded aluminum alloy power cable, including an outer sheath, at least one insulated wire core is arranged in the outer sheath, and the insulated wire core is composed of From the inside to the outside, it includes a conductor core, a conductor shielding layer, an insulating layer, an insulating shielding layer and a metal shielding layer, and the conductor core is an aluminum alloy conductor core. the

The outer sheath of the present utility model includes a wrapping layer, an inner sheath layer, an isolation layer, and an outer sheath layer from the inside to the outside, and an armor layer is also arranged between the inner sheath layer and the isolation layer. A filling layer is provided between the wrapping layer of the conductor core and the metal shielding layer of the conductor core. the

The conductor wire core of the utility model has a tensile strength greater than or equal to 90MPa, a breaking elongation greater than or equal to 10%, and a volume resistivity less than or equal to 0.028264Ω·mm ² /m.

The armoring layer of the utility model is a steel tape armoring layer or an aluminum alloy tape interlocking armoring layer. the

The insulating layer of the utility model is a cross-linked polyethylene insulating layer or a polyolefin insulating layer. the

The insulating layer of the utility model is a flame-retardant cross-linked polyethylene insulating layer. the

The metal shielding layer of the utility model is a non-magnetic metal shielding layer. the

The metal shielding layer of the utility model is composed of one or more metal strips or metal braids or concentric layers of metal wires or a combination of metal wires and metal strips. the

The inner sheath layer of the utility model is an inner sheath layer of medium-density polyethylene, and the outer sheath layer is an outer sheath layer of medium-density polyethylene capable of preventing termites. the

The isolation layer of the utility model is a glass fiber polyester tape isolation layer. the

The beneficial effects of the utility model are: 1) The conductor core of the utility model adopts the aluminum alloy conductor core for cables, which solves the shortcomings of the pure aluminum core in flexibility, creep resistance and corrosion resistance; 2) The tensile strength of the aluminum alloy conductor core is ≥90MPa, the elongation at break is ≥10%, and the volume resistivity is ≤0.028264Ω·mm ² /m. By increasing the cross-sectional area of the conductor core, the same conductive effect as copper can be achieved ; 3) The outer sheath layer is made of termite-proof medium-density polyethylene material, which can effectively prevent the damage of insects such as termites, improve the performance of the cable, and increase the service life; 4) The cable of the utility model has an armored layer, which can The cable has good compression and impact resistance, and is easy to bend, corrosion-resistant, light in weight, and easy to install. It also has the advantages of anti-geomagnetic interference, anti-insect, mouse and ant bite, and good fire resistance; 5) the utility model is anti-corrosion Good interference ability.

Description of drawings

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

Fig. 2 is a schematic structural view of Embodiment 2 of the utility model. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

Embodiment one:

As shown in Figure 1, a low-voltage shielded aluminum alloy power cable is a multi-core low-voltage shielded aluminum alloy power cable, including an outer sheath, at least one insulated wire core is arranged in the outer sheath, and the insulated wire core includes The conductor core 1, the conductor shielding layer 2, the insulation layer 3, the insulation shielding layer 4 and the metal shielding layer 5, the conductor core 1 is an aluminum alloy conductor core. the

Further, the outer sheath includes a wrapping layer 6, an inner sheath layer 7, an isolation layer 8, and an outer sheath layer 9 from the inside to the outside, and an armor layer 10 is also provided between the inner sheath layer 7 and the isolation layer 8. A filling layer 11 is provided between the wrapping layer 6 and the metal shielding layer 5 of the conductor core 1 . the

Furthermore, the tensile strength of the conductor core 1 is greater than or equal to 90 MPa, the elongation at break is greater than or equal to 10%, and the volume resistivity is less than or equal to 0.028264Ω·mm ² /m.

Further, the armor layer 10 is a steel tape armor layer or an aluminum alloy tape interlocking armor layer, that is, the armor layer 10 can be designed as a steel tape armor layer or an aluminum alloy tape interlocking armor layer, preferably The best solution is to choose an aluminum alloy belt interlocking armor layer, which is a self-locking interlocking armoring method, and interlocking is formed between adjacent armor layers, which not only makes the cable have better compression and impact resistance, And easy to bend, corrosion resistance, light weight, easy to install. the

Further, the insulating layer 3 is a cross-linked polyethylene insulating layer or a polyolefin insulating layer. the

Furthermore, the insulation layer 3 is a flame-retardant cross-linked polyethylene insulation layer. As a preferred solution, the flame-retardant cross-linked polyethylene insulation layer can prevent the cable from dripping and flame delay when it catches fire, and improves the safety of the cable. Safety performance, expanding the use of cables. the

Further, the metal shielding layer 5 is a non-magnetic metal shielding layer. the

Further, the metal shielding layer 5 is composed of one or more metal strips or metal braids or concentric layers of metal wires, or a combination of metal wires and metal strips. the

Further, the inner sheath layer 7 is an inner sheath layer of medium density polyethylene, and the outer sheath layer 9 is an outer sheath layer of medium density polyethylene capable of preventing termites, which improves the performance of the cable against termite bites. the

Further, the isolation layer 8 is an isolation layer of glass fiber polyester tape. the

The utility model is illustrated by taking a three-core low-voltage shielded aluminum alloy power cable as an example. In actual use, multiple insulated wire cores can be provided according to the situation and requirements of the site. the

Embodiment two:

As shown in Figure 2, a low-voltage shielded aluminum alloy power cable is a single-core low-voltage shielded aluminum alloy power cable. From the inside to the outside, there are conductor core 1, conductor shield 2, insulation layer 3, metal shield 4, Around the cladding layer 6 and the outer sheath layer 9. the

The above-mentioned embodiments are only described to the preferred implementation of the utility model, and are not limited to the scope of the utility model. The various deformations and improvements made all should fall within the scope of protection determined by the claims of the present utility model. the

Claims (10)

1. A low-voltage shielded aluminum alloy power cable, comprising an outer sheath, characterized in that: the outer sheath is provided with at least one insulated wire core, and the insulated wire core includes a conductor wire core from the inside to the outside ( 1), conductor shielding layer (2), insulating layer (3), insulating shielding layer (4) and metal shielding layer (5), the conductor core (1) is an aluminum alloy conductor core. the 2. The low-voltage shielded aluminum alloy power cable according to claim 1, characterized in that: the outer sheath includes a wrapping layer (6), an inner sheath layer (7), an isolation layer (8) from the inside to the outside ), the outer sheath layer (9), the armor layer (10) is also provided between the inner sheath layer (7) and the isolation layer (8), and the wrapping layer (6) and the conductor wire A filling layer (11) is arranged between the metal shielding layers (5) of the core (1). the 3. The low-voltage shielded aluminum alloy power cable according to claim 1, characterized in that: the tensile strength of the conductor core (1) is greater than or equal to 90MPa, the elongation at break is greater than or equal to 10%, and the volume resistivity is less than or equal to 0.028264Ω·mm ² /m. 4. The low-voltage shielded aluminum alloy power cable according to claim 2, characterized in that: the armor layer (10) is a steel tape armor layer or an aluminum alloy tape interlocking armor layer. the 5. The low-voltage shielded aluminum alloy power cable according to claim 1, characterized in that: the insulating layer (3) is a cross-linked polyethylene insulating layer or a polyolefin insulating layer. the 6. The low-voltage shielded aluminum alloy power cable according to claim 5, characterized in that: the insulating layer (3) is a flame-retardant cross-linked polyethylene insulating layer. the 7. The low-voltage shielded aluminum alloy power cable according to claim 1, characterized in that: the metal shielding layer (5) is a non-magnetic metal shielding layer. the 8. The low-voltage shielded aluminum alloy power cable according to claim 7, characterized in that: the metal shielding layer (5) consists of one or more concentric layers of metal strips or metal braids or wires or is made of metal Combination of wire and metal belt. the 9. The low-voltage shielded aluminum alloy power cable according to claim 2, characterized in that: the inner sheath layer (7) is an inner sheath layer of medium density polyethylene, and the outer sheath layer (9) Outer sheath of medium density polyethylene for termite protection. the 10. The low-voltage shielded aluminum alloy power cable according to claim 2, characterized in that: the isolation layer (8) is a glass fiber polyester tape isolation layer. the

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