CN215118362U - Aluminum alloy core indulges waterproof direct current flat cable of package plastic-aluminum inoxidizing coating - Google Patents
Aluminum alloy core indulges waterproof direct current flat cable of package plastic-aluminum inoxidizing coating Download PDFInfo
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- CN215118362U CN215118362U CN202120625098.5U CN202120625098U CN215118362U CN 215118362 U CN215118362 U CN 215118362U CN 202120625098 U CN202120625098 U CN 202120625098U CN 215118362 U CN215118362 U CN 215118362U
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Abstract
The utility model relates to a waterproof direct current flat cable with an aluminum alloy core longitudinally wrapped with an aluminum-plastic protective layer, which is provided with two cable units arranged in parallel and wrapped by an outer sheath; the cable unit comprises an aluminum alloy conductor, an insulating layer, an aluminum-plastic longitudinal covering protective layer and an inner protective layer. The utility model discloses an aluminum-plastic composite membrane indulges package + polyolefin comprehensive protection layer and radially blocks water jointly, is applicable to humid environment and has the function of radially blocking water. Namely, when the polyolefin sheath is extruded, the polyolefin film on the surface of the aluminum-plastic composite belt is well bonded with the inner surface of the polyolefin sheath due to the action of high temperature and pressure of polyolefin melt; meanwhile, the lap covers between the longitudinal aluminum-plastic composite tapes are well bonded, so that the way of water (gas) permeating into the cable is completely blocked, and a good water blocking effect is achieved. The service life and the electrical safety performance of the cable are improved under various humid environmental conditions, and the cable has good application prospects.
Description
Technical Field
The utility model relates to the technical field of cables, concretely relates to aluminum alloy core indulges waterproof direct current flat cable of package plastic-aluminum inoxidizing coating.
Background
Photovoltaic power generation is a technology for directly converting solar energy into electric energy by using a solar cell according to the principle of the photovoltaic effect. The photovoltaic power generation system is mainly composed of three parts, namely a solar panel (assembly), a controller and an inverter, wherein solar cells are connected in series and then are packaged and protected to form a large-area solar cell assembly, and then the solar cell assembly is matched with components such as a power controller, a storage battery, the inverter and a tracking system to form the solar photovoltaic power generation system.
The cables used in these paths are called solar photovoltaic cables, and since they are laid outdoors, the solar power generation system often operates under severe environmental conditions, such as high temperature, low temperature, high humidity, ultraviolet radiation, and oil pollution, and therefore, such cables need to be eroded by natural conditions, such as wind, sun, rain, frost, and ultraviolet, for a long time, and therefore, the special photovoltaic power generation cables need to have characteristics of good heat resistance, long-term stability, moisture resistance, ultraviolet resistance, electrical conductivity, and high strength.
In the late 60 s of the 20 th century, north american countries began to develop and produce aluminum alloy cables. In more than ten years ago, China also adds to the research and development production of the aluminum alloy cable, and through continuous experiments and improvements, the performance of the aluminum alloy cable is greatly improved, and the price advantage is also obvious, so that the aluminum alloy cable is accepted by the market and users.
Elements such as copper, iron, magnesium and the like are added into a formula system of an aluminum alloy conductor in the aluminum alloy cable, and the resistance stability of the aluminum alloy at high temperature is improved by adding the copper; the addition of iron improves the creep resistance and the compactibility of the aluminum alloy, and avoids the problem of relaxation caused by creep deformation; the addition of magnesium increases the contact point of the aluminum alloy under the same interface pressure, and has higher tensile strength.
The water seepage paths of the aluminum alloy cable are generally as follows: (1) water seeps through the sheath along the radial direction (or radial direction) of the cable; (2) water is seeped longitudinally (or axially) along the gap between the cable conductor and the cable core. The radial water resistance generally adopts a polyethylene outer sheath in structure; although polyethylene is insoluble in water and has water-blocking properties, the use of a single polyethylene sheath to block water remains problematic for long periods of time. Long-term practical operation experience of the communication cable with the polyethylene sheath proves that when the communication cable with the plastic sheath is laid underground, although the sheath is intact, moisture or steam still permeates into the cable core of the cable through the plastic sheath after long-term operation, so that the transmission performance of the cable is deteriorated. Therefore, the water blocking of polyethylene or other polyolefin sheaths alone cannot meet the radial water blocking requirement of the cable.
Disclosure of Invention
The utility model aims at overcoming prior art's defect, providing a waterproof direct current flat cable of package aluminum-plastic inoxidizing coating is indulged to aluminum alloy core that photovoltaic power generation system used.
Realize the utility model discloses the technical scheme of purpose is: a waterproof direct current flat cable with an aluminum alloy core longitudinally wrapped with an aluminum-plastic protective layer is provided with two cable units which are arranged in parallel and wrapped by an outer sheath; the cable unit comprises an aluminum alloy conductor, an insulating layer coated with the aluminum alloy conductor, an aluminum-plastic longitudinal-covering protective layer coated with the insulating layer, and an inner protective layer coated with the aluminum-plastic longitudinal-covering protective layer.
According to the technical scheme, the insulating layer 2, the inner protection layer and the outer sheath are made of 125 ℃ irradiation cross-linked polyolefin insulating materials.
According to the technical scheme, the longitudinal covering overlapping width of the aluminum-plastic longitudinal covering protective layer is more than or equal to 1 mm.
According to the technical scheme, the nominal thickness of the aluminum-plastic composite belt of the aluminum-plastic longitudinal covering protective layer is 0.15 mm.
The material of the aluminum alloy conductor is AA 8030.
After the technical scheme is adopted, the utility model discloses following positive effect has:
the utility model discloses an aluminum-plastic composite membrane indulges package + polyolefin comprehensive protection layer and radially blocks water jointly, is applicable to humid environment and has the function of radially blocking water. Namely, when the polyolefin sheath is extruded, the polyolefin film on the surface of the aluminum-plastic composite belt is well bonded with the inner surface of the polyolefin sheath due to the action of high temperature and pressure of polyolefin melt; meanwhile, the lap covers between the longitudinal aluminum-plastic composite tapes are well bonded, so that the way of water (gas) permeating into the cable is completely blocked, and a good water blocking effect is achieved. The service life and the electrical safety performance of the cable are improved under various humid environmental conditions, and the cable has good application prospects.
The aluminum alloy conductor adopts AA8030 aluminum alloy, elements such as copper, iron and magnesium are added in a formula system, and the resistance stability of the aluminum alloy at high temperature is improved by adding copper; the addition of iron improves the creep resistance and the compactibility of the aluminum alloy, and avoids the problem of relaxation caused by creep deformation; the addition of magnesium increases the contact point of the aluminum alloy under the same interface pressure, and has higher tensile strength.
The aluminum alloy cable is designed and selected, the same current-carrying capacity can be obtained by increasing the cross section, although the cross section of the conductor is increased, the large difference between the specific weight of copper and aluminum and the market price still enables the cost of the cable to be greatly reduced, the weight of the cable is also greatly reduced, and the flat design of the two-core direct current cable and the design of the aluminum-plastic composite film longitudinal covering and the polyolefin comprehensive protective layer provide more selectable modes for cable installation, laying and using places, are also beneficial to shortening the field construction period and reducing the cost, the service life and the electrical safety performance of the cable are improved under the same environmental condition, and the use requirements of the cable for a photovoltaic power generation system are greatly met.
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 diagram of the present invention.
In the figure: the aluminum alloy conductor 1, the insulating layer 2, the aluminum-plastic longitudinal covering protective layer 3, the inner protective layer 4 and the outer protective sleeve 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
(example 1)
Referring to fig. 1, the utility model provides a waterproof dc flat cable with aluminum alloy core longitudinally wrapped with aluminum-plastic protective layer, which is provided with two cable units arranged in parallel and wrapped by an outer sheath 5; the cable unit comprises
An aluminum alloy conductor 1,
An insulating layer 2 covering the aluminum alloy conductor 1,
An aluminum-plastic longitudinal covering protective layer 3 coated with the insulating layer 2,
And an inner protective layer 4 which is coated with aluminum plastic and longitudinally wraps the protective layer 3.
The structure of the aluminum alloy conductor 1 meets the requirement of the 5 th soft conductor in GB/T3956-.
When the outer sheath 5 is extruded, the polyolefin film on the surface of the aluminum-plastic composite belt on the aluminum-plastic longitudinal covering protective layer 3 is well bonded with the inner surface of the polyolefin sheath of the inner sheath 4 under the action of high temperature and pressure of the melt of the outer sheath 5; meanwhile, the lap covers among the aluminum-plastic longitudinal covering protective layers 3 are well bonded, so that the way of water (gas) permeating into the cable is completely blocked, and a good water blocking effect is achieved.
The insulating layer 2, the inner protection layer 4 and the outer protection layer 5 are made of 125 ℃ irradiation cross-linked polyolefin insulating materials. The insulating layer 2 should be continuously and tightly extruded on the aluminum alloy conductor 1 or the isolating layer, and when the insulating layer 2 is stripped, the insulating layer 2 should not adhere to the aluminum alloy conductor 1 and damage the aluminum alloy conductor 1 or the coating thereof. It is conceivable that the insulating layer 2 may be a double layer insulation, and the cross section of the insulating layer 2 should have no visible defects such as air holes or voids. The inner protective layer 4 should be bonded with the plastic surface of the aluminum-plastic longitudinal covering protective layer 3. The surface of the outer sheath 5 should be smooth and flat, the color is uniform, the defects such as cracks, holes and particles are avoided, the cross section of the outer sheath should have no sundries or holes, and the color of the outer sheath 5 should be consistent.
The longitudinal covering overlapping width of the aluminum-plastic longitudinal covering protective layer 3 is more than or equal to 1 mm.
The nominal thickness of the aluminum-plastic composite belt of the aluminum-plastic longitudinal covering protective layer 3 is 0.15 mm.
The aluminum alloy conductor 1 is made of AA 8030. The aluminum alloy conductor adopts AA8030 aluminum alloy, elements such as copper, iron and magnesium are added in a formula system, and the resistance stability of the aluminum alloy at high temperature is improved by adding copper; the addition of iron improves the creep resistance and the compactibility of the aluminum alloy, and avoids the problem of relaxation caused by creep deformation; the addition of magnesium increases the contact point of the aluminum alloy under the same interface pressure, and has higher tensile strength.
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 (5)
1. The utility model provides a waterproof direct current flat cable of aluminium alloy core indulges package plastic-aluminum inoxidizing coating which characterized in that: comprises two juxtaposed cable units surrounded by an outer sheath (5); the cable unit comprises
An aluminum alloy conductor (1),
An insulating layer (2) covering the aluminum alloy conductor (1),
An aluminum-plastic longitudinal covering protective layer (3) coated with an insulating layer (2),
An inner protective layer (4) coated with an aluminum-plastic longitudinal covering protective layer (3).
2. The waterproof flat direct-current cable with the aluminum alloy core longitudinally wrapped with the aluminum-plastic protective layer as claimed in claim 1, wherein: the insulating layer (2), the inner protective layer (4) and the outer protective sleeve (5) are made of 125 ℃ irradiation cross-linked polyolefin insulating materials.
3. The waterproof flat direct-current cable with the aluminum alloy core longitudinally wrapped with the aluminum-plastic protective layer as claimed in claim 1, wherein: the longitudinal covering overlapping width of the aluminum-plastic longitudinal covering protective layer (3) is more than or equal to 1 mm.
4. The waterproof flat direct-current cable with the aluminum alloy core longitudinally wrapped with the aluminum-plastic protective layer as claimed in claim 1, wherein: the nominal thickness of the aluminum-plastic composite belt of the aluminum-plastic longitudinal covering protective layer (3) is 0.15 mm.
5. The waterproof flat direct-current cable with the aluminum alloy core longitudinally wrapped with the aluminum-plastic protective layer as claimed in claim 1, wherein: the aluminum alloy conductor (1) is made of AA 8030.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120625098.5U CN215118362U (en) | 2021-03-28 | 2021-03-28 | Aluminum alloy core indulges waterproof direct current flat cable of package plastic-aluminum inoxidizing coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120625098.5U CN215118362U (en) | 2021-03-28 | 2021-03-28 | Aluminum alloy core indulges waterproof direct current flat cable of package plastic-aluminum inoxidizing coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215118362U true CN215118362U (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120625098.5U Active CN215118362U (en) | 2021-03-28 | 2021-03-28 | Aluminum alloy core indulges waterproof direct current flat cable of package plastic-aluminum inoxidizing coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215118362U (en) |
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2021
- 2021-03-28 CN CN202120625098.5U patent/CN215118362U/en active Active
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