CN213519358U

CN213519358U - Special-shaped aluminum alloy flexible conductor two-core photovoltaic cable

Info

Publication number: CN213519358U
Application number: CN202021681827.0U
Authority: CN
Inventors: 吕志亮; 翟立锋; 刘铮; 李帅
Original assignee: Shuangdeng Cable Co Ltd
Current assignee: Shuangdeng Cable Co Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-06-22
Anticipated expiration: 2030-08-13

Abstract

The utility model relates to a power cable field, in particular to two core photovoltaic cables of special-shaped aluminum alloy soft conductor. The cable comprises two groups of conductors, wherein the conductors are in two groups, the cross sections of the conductors are semicircular, an insulating layer is sleeved on the outer layer, the planes of the two groups of insulating layers are spliced, and a belting layer, an inner protection layer, an armor layer and a sheath layer are sequentially sleeved on the spliced insulating layer from inside to outside. The utility model discloses alleviate cable weight, material saving cost, adopt special-shaped conductor structure can reduce the cable external diameter by a wide margin, more utilize the installation of laying. The high and low temperature resistance, the mechanical and physical properties, the sunlight aging resistance and other properties of the insulating layer are greatly improved. The flexibility is good, and the cable bending device is suitable for application scenes needing frequent cable bending and convenient to install.

Description

Special-shaped aluminum alloy flexible conductor two-core photovoltaic cable

Technical Field

The utility model relates to a power cable field, in particular to two core photovoltaic cables of special-shaped aluminum alloy soft conductor.

Background

The traditional cable for the photovoltaic power generation system generally adopts a tinned stranded copper conductor, and is wrapped with an irradiation cross-linked polyolefin insulation and sheath. The photovoltaic construction project adopting the cable is high in cost, heavy in weight, poor in bending performance of thick wires, not easy to bend and inconvenient to install, and particularly under the scene needing frequent bending.

The construction fund subsidy of the country to the photovoltaic power generation project in recent two years is less and less, adopts aluminum alloy conductor flexible cable for photovoltaic system after, will reduce project construction cost by a wide margin, simultaneously, adopts special-shaped conductor structure can reduce the cable external diameter, and material saving cost more utilizes and lays the installation.

Disclosure of Invention

The utility model aims at overcoming the defect that prior art exists, provide a two core photovoltaic cables of special-shaped aluminum alloy soft conductor.

Realize the utility model discloses the technical scheme of purpose is: the utility model provides a two core photovoltaic cables of dysmorphism aluminum alloy soft conductor, includes the conductor, the conductor is total two sets ofly, and the cross section is semi-circular, and outer cover has the insulating layer, and two sets of the plane of insulating layer is amalgamated, and the insulating layer after the amalgamation has belted layer, interior sheath, armor and restrictive coating from inside to outside in proper order.

Furthermore, a shielding layer is arranged between the armor layer and the sheath layer.

Furthermore, a reinforcing layer is arranged between the insulating layers.

Furthermore, the conductor is a fifth type aluminum alloy annealed semicircular stranded soft conductor and is formed by single-wire stranding and profiling of aluminum alloy with the wire diameter of 0.15-0.30 mm.

Furthermore, the insulating layer adopts 125 ℃ irradiation cross-linking low-smoke halogen-free flame-retardant polyolefin and is extruded outside the conductor; the belting layer adopts ultra-thin non-woven fabrics with the thickness of 0.05mm to wrap outside the spliced insulating layer.

Furthermore, the inner protective layer is made of low-smoke halogen-free flame-retardant polyolefin material.

Furthermore, the armor layer is spirally wrapped outside the inner protective layer by adopting a double-layer galvanized steel strip.

Furthermore, the sheath layer is made of 125 ℃ irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material.

Furthermore, the shielding layer is woven by adopting a tinned copper wire and Kevlar high-strength fibers.

Furthermore, the reinforcing layer is made of high-strength Kevlar fiber materials.

After the technical scheme is adopted, the utility model discloses following positive effect has:

(1) the utility model discloses alleviate cable weight, material saving cost, adopt special-shaped conductor structure can reduce the cable external diameter by a wide margin, more utilize the installation of laying.

(2) The utility model discloses can promote insulating layer's high low temperature resistance ability, mechanical physical properties, anti sunlight ageing performance by a wide margin.

(3) The utility model discloses the compliance is good, is applicable to the application scene that needs frequent crooked cable, the installation of being convenient for.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic structural view of example 1;

fig. 2 is a schematic structural view of embodiment 2.

Detailed Description

(example 1)

See fig. 1, the utility model discloses have conductor 1, conductor 1 is total two sets ofly, and the cross section is semi-circular, and outer cover has insulating layer 2, and is two sets of the plane of insulating layer 2 is amalgamated mutually, after the amalgamation insulating layer 2 from inside to outside in proper order the cover have band layer 3, interior sheath 4, armor 5 and restrictive coating 7. The conductor 1 is a fifth type aluminum alloy annealed semicircular stranded soft conductor and is formed by stranding and profiling aluminum alloy single wires with the wire diameter of 0.15 mm. The insulating layer 2 adopts 125 ℃ irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin, and is extruded outside the conductor 1. The belting layer 3 is wrapped outside the spliced insulating layer 2 by adopting an ultra-thin non-woven fabric with the thickness of 0.05 mm. The inner protective layer 4 is made of low-smoke halogen-free flame-retardant polyolefin material. The armor layer 5 is spirally wrapped outside the inner protective layer 4 by adopting a double-layer galvanized steel strip. The sheath layer 7 is made of 125 ℃ irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material.

(example 2)

Referring to fig. 2, this embodiment is substantially the same as embodiment 1, and its distinctive features are: the conductor 1 is a fifth type aluminum alloy annealed semicircular stranded soft conductor and is formed by stranding and profiling aluminum alloy single wires with the wire diameter of 0.30 mm. And a shielding layer 6 is arranged between the armor layer 5 and the sheath layer 7. The shielding layer 6 is woven by tinned copper wires and Kevlar high-strength fibers. And a reinforcing layer 8 is arranged between the insulating layers 2. The reinforcing layer 8 is made of high-strength Kevlar fiber materials.

The conductor 1 adopts a fifth type aluminum alloy annealed semicircular stranded soft conductor, which is a round conductor different from a traditional product. The outer layer is provided with an irradiation crosslinking polyolefin insulating layer 2, an ultra-thin non-woven fabric, a low-smoke halogen-free polyolefin inner sheath 4, a galvanized steel strip armor layer 5 and an irradiation crosslinking polyolefin sheath layer 7, and the using environment temperature of the cable is-40 to +125 ℃. The conductor 1 adopts a fifth type aluminum alloy annealing soft stranded conductor, and annealing and profiling are carried out through a special process, so that the technical difficulty that the fifth type soft conductor cannot be profiled is solved.

After the insulating layer 2 and the sheath layer material of the cable are subjected to a high-energy electron beam irradiation crosslinking process, the polyolefin molecular structure is linearly crosslinked into a net structure, and the high-low temperature resistance, the mechanical and physical properties, the sunlight aging resistance and other properties of the insulating layer 2 can be greatly improved. The temperature of the using environment can reach-40 to 125 ℃.

The cable has the advantages that the cable not only has all the performances of the cable for the conventional photovoltaic power generation system, but also greatly reduces the weight of the cable, saves the material cost, reduces the outer diameter of the cable, is convenient to lay and install, and can ensure the normal operation of the photovoltaic power generation system.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a two core photovoltaic cables of dysmorphism aluminum alloy soft conductor which characterized in that: the cable comprises conductors (1), wherein the conductors (1) are divided into two groups, the cross section of each group is semicircular, an insulating layer (2) is sleeved on the outer layer, the planes of the insulating layers (2) are spliced, and the insulating layers (2) are sequentially sleeved with a belting layer (3), an inner protection layer (4), an armor layer (5) and a sheath layer (7) from inside to outside after splicing.

2. The special-shaped aluminum alloy soft conductor two-core photovoltaic cable according to claim 1, characterized in that: and a shielding layer (6) is arranged between the armor layer (5) and the sheath layer (7).

3. The special-shaped aluminum alloy soft conductor two-core photovoltaic cable according to claim 1, characterized in that: and a reinforcing layer (8) is arranged between the insulating layers (2).

4. The special-shaped aluminum alloy soft conductor two-core photovoltaic cable according to claim 1, characterized in that: the conductor (1) is a fifth type aluminum alloy annealed semicircular stranded soft conductor and is formed by stranding and pressing aluminum alloy single wires with the wire diameter of 0.15-0.30 mm.

5. The special-shaped aluminum alloy soft conductor two-core photovoltaic cable according to claim 1, characterized in that: the insulating layer (2) adopts 125 ℃ irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin and is extruded outside the conductor (1); the belting layer (3) is wrapped outside the spliced insulating layer (2) by adopting an ultra-thin non-woven fabric with the thickness of 0.05 mm.

6. The special-shaped aluminum alloy soft conductor two-core photovoltaic cable according to claim 1, characterized in that: the inner protective layer (4) is made of low-smoke halogen-free flame-retardant polyolefin material.

7. The special-shaped aluminum alloy soft conductor two-core photovoltaic cable according to claim 1, characterized in that: the armor layer (5) is spirally wrapped outside the inner protective layer (4) by adopting a double-layer galvanized steel strip.

8. The special-shaped aluminum alloy soft conductor two-core photovoltaic cable according to claim 1, characterized in that: the sheath layer (7) is made of 125 ℃ irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material.

9. The special-shaped aluminum alloy soft conductor two-core photovoltaic cable according to claim 2, characterized in that: the shielding layer (6) is woven by adopting tinned copper wires and Kevlar high-strength fibers.

10. The special-shaped aluminum alloy soft conductor two-core photovoltaic cable according to claim 3, characterized in that: the reinforcing layer (8) is made of high-strength Kevlar fiber materials.