CN217719111U

CN217719111U - AC/DC transmission aluminum alloy power cable for photovoltaic power generation system

Info

Publication number: CN217719111U
Application number: CN202221434788.3U
Authority: CN
Inventors: 杨全法; 张钰涛; 张盼锋; 张平凡
Original assignee: Shaanxi Xite Cable Co ltd
Current assignee: Shaanxi Xite Cable Co ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-11-01
Anticipated expiration: 2032-06-10

Abstract

The utility model discloses an alternating current-direct current transmission aluminum alloy power cable for photovoltaic power generation system, including not having the halogen band, the inside of not having the halogen band is equipped with conductor and filler, the parcel has the flame retardant coating on the surface of conductor, the surface of flame retardant coating is provided with the insulating layer, the surface of not having the halogen band is provided with the oversheath. The utility model discloses a there is not steamed band, the conductor, the flame retardant coating, the insulating layer, the cooperation of filler and oversheath is used, make this alternating current-direct current transmission aluminum alloy power cable for photovoltaic power generation system, it is simple to possess structure, the external diameter is little, light in weight and advantage such as with low costs, make this cable have fire-retardant characteristic simultaneously, the cable is difficult for burning during the conflagration, the smoke volume is little, do not contain halogen, the resistance to compression, shock resistance is good, resistant high low temperature, advantages such as ultraviolet radiation prevention, and need not add production facility, need not purchase the material that the novel price is high, just can produce with existing equipment and ordinary material.

Description

AC/DC transmission aluminum alloy power cable for photovoltaic power generation system

Technical Field

The utility model relates to the technical field of cables, specifically be photovoltaic power generation system is with alternating current-direct current transmission aluminum alloy power cable.

Background

The cable is made of one or more mutually insulated conductors and an outer insulating protective layer, and is a conducting wire for transmitting power or information from one place to another place, and the cable comprises a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like, and the cables consist of single-strand or multi-strand conducting wires and insulating layers and are used for connecting circuits, electric appliances and the like.

The aluminum alloy power cable is a novel material power cable which takes an aluminum alloy material as a conductor and adopts advanced technologies such as a special roll forming type wire stranding production process and an annealing appearance, the aluminum alloy power cable overcomes the defects of the traditional pure aluminum cable, the bending property, the creep resistance, the corrosion resistance and the like are greatly improved although the conductivity of the cable is not improved, the continuous performance stability of the cable can be ensured when the cable is overloaded and overheated for a long time, the conductivity of the aluminum alloy is 61.8 percent of copper, the current-carrying capacity is 79 percent of copper and is superior to the pure aluminum standard, but the actual weight of the aluminum alloy is about one third of that of the copper under the same volume, therefore, the weight of the aluminum alloy cable is about one half of that of the copper cable under the same current-carrying capacity, the aluminum alloy cable is adopted to replace the copper cable, the weight of the cable can be reduced, the installation cost is reduced, and the abrasion of equipment and the cable is reduced, so that the installation work is easier.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an alternating current-direct current transmission aluminum alloy power cable for photovoltaic power generation system, the cable is difficult for burning when possessing the conflagration, the smoke volume is little, do not contain halogen, resistance to compression, shock resistance is good, advantage such as resistant high low temperature and anti ultraviolet radiation, compare with traditional copper cable and aluminum cable, at the security performance, electric property, mechanical properties, all have the advantage on life and the economic performance, more can embody aluminum alloy cable's advantage in photovoltaic power generation system, current aluminum alloy power cable has been solved, the structure is complicated, the external diameter is great, weight is heavier and advantage such as with the cost is higher, need add professional production facility and the problem that the novel material of purchasing price is high simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: the alternating current-direct current transmission aluminum alloy power cable for the photovoltaic power generation system comprises a halogen-free wrapping belt, a conductor and a filler are arranged inside the halogen-free wrapping belt, a fire-resistant layer wraps the outer surface of the conductor, an insulating layer is arranged on the outer surface of the fire-resistant layer, and an outer sheath is arranged on the outer surface of the halogen-free wrapping belt.

Preferably, the halogen-free wrapping tape is a low-smoke and halogen-free wrapping tape with a thickness of millimeter, and the overlapping rate of the halogen-free wrapping tape is 50 percent.

Preferably, the insulating layer is a low-smoke halogen-free cross-linked polyolefin insulating material, and the filler is a halogen-free flame-retardant rope.

Preferably, the outer sheath is an extruded low-smoke halogen-free cross-linked polyolefin material, the joint of the surface of the fire-resistant layer and the inner wall of the insulating layer is fixedly connected, and the joint of the surface of the halogen-free wrapping tape and the inner wall of the outer sheath is fixedly connected.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a there is not steamed band, the conductor, the flame retardant coating, the insulating layer, the cooperation of filler and oversheath is used, make this photovoltaic power generation system use alternating current-direct current transmission aluminum alloy power cable, simple structure is possessed, the external diameter is little, light in weight and advantage such as with low costs, it has fire-retardant characteristic to make this cable simultaneously, the cable is difficult for burning during the conflagration, the smoke volume is little, do not contain halogen, the resistance to compression, shock resistance is good, high low temperature resistant, advantages such as anti ultraviolet radiation, and need not add production facility, need not purchase the novel material of high price, just can produce with existing equipment and ordinary material.

Drawings

FIG. 1 is a sectional perspective view of the present invention;

fig. 2 is a sectional perspective view of the outer sheath of the utility model;

fig. 3 is the utility model discloses insulating layer cuts open perspective.

In the figure: the cable comprises a halogen-free wrapping tape 1, a conductor 2, a fire-resistant layer 3, an insulating layer 4, a filler 5 and an outer sheath 6.

Detailed Description

Referring to fig. 1-3, the ac/dc transmission aluminum alloy power cable for photovoltaic power generation system includes a halogen-free wrapping tape 1, a conductor 2 and a filler 5 are disposed inside the halogen-free wrapping tape 1, a fire-resistant layer 3 is wrapped on an outer surface of the conductor 2, an insulating layer 4 is disposed on an outer surface of the fire-resistant layer 3, and an outer sheath 6 is disposed on an outer surface of the halogen-free wrapping tape 1.

The halogen-free wrapping tape 1 is a low-smoke halogen-free tape with the thickness of 0.2 mm, and the overlapping rate of the halogen-free wrapping tape 1 is 50 percent.

The insulating layer 4 is low-smoke halogen-free cross-linked polyolefin insulating material, and the filler 5 is a halogen-free flame-retardant rope.

The outer sheath 6 is extruded by low-smoke halogen-free cross-linked polyolefin material, the joint of the surface of the fire-resistant layer 3 and the inner wall of the insulating layer 4 is fixedly connected, and the joint of the surface of the halogen-free wrapping tape 1 and the inner wall of the outer sheath 6 is fixedly connected.

Through setting up the crowded insulating layer and the outer jacket of wrapping of low smoke and zero halogen's steamed band, low smoke and zero halogen crosslinked polyolefin insulating material and sheath material, make this cable have fire-retardant characteristic, the cable is difficult for burning, the smoke volume is little, do not contain halogen, resistance to compression, shock resistance are good, resistant high low temperature, advantage such as anti ultraviolet radiation.

When the cable is used, the cable filler 5 and the halogen-free wrapping tape 1 adopt the halogen-free flame-retardant rope and the low-smoke halogen-free flame-retardant wrapping tape instead of selecting glass fiber and glass fiber tape which have better flame-retardant and fire-resistant properties but higher price, so that the manufacturing cost is reduced, the production flow is simplified, the weight and the outer diameter of the cable are reduced, the production and the later laying are easier, the halogen-free wrapping tape 1 adopts the low-smoke halogen-free tape with the thickness of 0.2 mm, the overlapping rate is 50 percent, in the prior art, the oxygen-isolating layer adopts the low-smoke halogen-free polyolefin material with higher oxygen index, the oxygen-isolating layer is added to release crystal water and absorb heat when the cable is burnt, a covering layer is formed on the surface, the covering layer isolates the combustion-supporting effect of oxygen, and the internal structure can be protected; when crystal water is separated out, a large amount of heat is absorbed by evaporation of water vapor, the temperature of the surrounding environment is reduced, and the cable can be gradually extinguished automatically when the cable catches fire, a layer of low-smoke halogen-free polyolefin material with higher oxygen index is extruded to be used as an oxygen isolation layer in the prior art, the cable adopts a halogen-free tape wrapping process, so that the halogen-free wrapping tape 1 can be used as a wrapping tape to stabilize the internal structure of the cable and also can be used as the oxygen isolation layer, the production process is simple, the size of the cable structure is reduced, the manufacturing cost is reduced, the cable can also play a role of the oxygen isolation layer, the insulating layer 4 and the filler 5 are respectively a low-smoke halogen-free crosslinked polyolefin insulating material and a halogen-free flame-retardant rope, the low-smoke halogen-free crosslinked polyolefin insulating material adopts an irradiation crosslinking mode, the cable is characterized in that the cable is composed of crosslinked polyethylene with a macromolecular three-dimensional structure formed by recombining molecular chains, so that the thermal performance of the cable after irradiation is greatly improved, the irradiation crosslinking adopts a physical mode, no water is introduced in the whole crosslinking process, the content of water molecules in an insulating material of the cable is low, the insulating purity is high, so that the irradiation crosslinked cable has good performances in the aspects of electrical performance, mechanical performance and the like, the service life is long and can reach 60 years, besides the characteristics mentioned above, the cable also has the advantages of light weight, simple structure, no drop limitation in laying and the like, and the outer sheath 6 is a low-smoke halogen-free crosslinked polyolefin sheath material for extrusion coating so as to protect the cable.

In summary, the following steps: this alternating current-direct current transmission aluminum alloy power cable for photovoltaic power generation system uses through the cooperation that does not have steamed band 1, conductor 2, flame retardant coating 3, insulating layer 4, filler 5 and oversheath 6, has solved current aluminum alloy power cable, and the structure is complicated, the external diameter is great, weight is heavier and advantage such as the cost is higher, need add professional production facility simultaneously and need purchase the problem of the novel material of high price.

Claims

1. Photovoltaic power generation is alternating current-direct current transmission aluminum alloy power cable for system, including there being no steamed band (1), its characterized in that: the halogen-free wrapping belt is characterized in that a conductor (2) and a filler (5) are arranged inside the halogen-free wrapping belt (1), a fire-resistant layer (3) is wrapped on the outer surface of the conductor (2), an insulating layer (4) is arranged on the outer surface of the fire-resistant layer (3), and an outer sheath (6) is arranged on the outer surface of the halogen-free wrapping belt (1).

2. The aluminum alloy power cable for ac/dc transmission for photovoltaic power generation system according to claim 1, wherein: the halogen-free wrapping tape (1) is a low-smoke halogen-free tape with the thickness of 0.2 mm, and the overlapping rate of the halogen-free wrapping tape (1) is 50 percent.

3. The aluminum alloy power cable for ac/dc transmission for a photovoltaic power generation system according to claim 1, wherein: the insulating layer (4) is a low-smoke halogen-free cross-linked polyolefin insulating material, and the filler (5) is a halogen-free flame-retardant rope.

4. The aluminum alloy power cable for ac/dc transmission for a photovoltaic power generation system according to claim 1, wherein: the outer sheath (6) is extruded for the low-smoke zero-halogen cross-linked polyolefin material, the joint of the surface of the fire-resistant layer (3) and the inner wall of the insulating layer (4) is fixedly connected, and the joint of the surface of the zero-halogen wrapping tape (1) and the inner wall of the outer sheath (6) is fixedly connected.