CN211604784U - Aluminum alloy variable frequency cable - Google Patents

Abstract

The utility model discloses an aluminum alloy variable frequency cable, including cable core, around covering and oversheath layer, around the covering cladding in cable core periphery, the oversheath layer cladding is around the covering periphery, the thread sinle silk includes thread conductor, the interior semiconductor layer of thread, thread insulating layer, the outer semiconductor layer of thread and thread shielding layer from interior to exterior in proper order, the zero line sinle silk includes zero line conductor and zero line insulating layer from interior to exterior in proper order; the main line conductor and the zero line conductor are both aluminum alloy conductors; the main line insulating layer and the zero line insulating layer are both made of cross-linked polyethylene formed by cross-linking peroxide; the main line inner semiconductor layer and the main line outer semiconductor layer are made of semiconductor rubber, and the main line shielding layer is formed by weaving copper wires; this application still sets up the thread shielding layer at the thread sinle silk, can play shielding electric field, prevents to take place insulation breakdown's effect between the cable core.

Description

Aluminum alloy variable frequency cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to aluminum alloy variable frequency cable.

Background

Frequency converters have been widely used in recent years because of their energy saving. The frequency conversion cable is a special cable for the frequency converter, and generally comprises three main line insulated wires and three zero line insulated wires, wherein an inner wrapping layer, a copper tape layer, an outer wrapping layer and an outer sheath layer are sequentially arranged outside the main line insulated wires and the zero line insulated wires to form a 3+3 wire core structure, so that the cable has stronger voltage impact resistance, can bear pulse voltage during high-speed frequent frequency conversion, and plays a good role in protecting a frequency conversion electric appliance. The existing frequency conversion cable also has certain optimized space in the aspects of anti-interference performance and electromagnetic shielding performance.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing an aluminum alloy variable frequency cable.

The utility model adopts the technical proposal that:

the aluminum alloy variable frequency cable comprises a cable core, a wrapping layer and an outer sheath layer, wherein the cable core comprises three main line wire cores and three zero line wire cores, the three main line wire cores are tangent to each other in a triangular shape, the three zero line wire cores are respectively arranged between the main line wire cores and are tangent to the main line wire cores, the wrapping layer wraps the periphery of the cable core, the outer sheath layer wraps the periphery of the wrapping layer, the main line wire cores sequentially comprise main line conductors, main line inner semiconductor layers, main line insulating layers, main line outer semiconductor layers and main line shielding layers from inside to outside, and the zero line wire cores sequentially comprise zero line conductors and zero line insulating layers from inside to outside; the main line conductor and the zero line conductor are both aluminum alloy conductors; the main line insulating layer and the zero line insulating layer are both made of cross-linked polyethylene formed by cross-linking peroxide; the main line inner semiconductor layer and the main line outer semiconductor layer are made of semiconductor rubber, and the main line shielding layer is formed by weaving copper wires.

Further, still include first shielding layer and second shielding layer around between covering and the oversheath layer, the cladding of second shielding layer is in first shielding layer periphery, first shielding layer adopts the textile of polyester multifilament, the second shielding layer adopts the copper wire to weave and forms.

Furthermore, the wrapping layer is formed by wrapping glass fiber cloth.

Further, still be equipped with the inner sheath layer around between covering and the first shielding layer, this inner sheath layer adopts the crowded package of polyolefin to form.

Further, a plastic-coated aluminum tape layer is arranged between the outer sheath layer and the second shielding layer.

Further, the aluminum alloy conductor is formed by stranding a plurality of aluminum alloy wires.

Further, the cable core gap is filled with a flame retardant material.

Further, still the cladding has the metal armor layer outside the oversheath, and this metal armor layer adopts aluminum alloy strip armor.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

according to the method, a main line inner semiconductor layer and a main line outer semiconductor layer are arranged on a main line wire core, and both the main line inner semiconductor layer and the main line outer semiconductor layer are made of semiconductor rubber; the semiconductor layer in the main line is arranged between the main line conductor and the main line insulating layer and can be in good contact with the main line insulating layer, so that partial discharge between the main line conductor and the main line insulating layer is avoided; the main line outer semiconductor layer is arranged between the main line insulating layer and the main line shielding layer and can be in good contact with the main line insulating layer to avoid local discharge between the main line insulating layer and the main line shielding layer; the main line wire cores are also provided with the main line shielding layers, so that an electric field can be shielded, and the cable cores are prevented from being subjected to insulation breakdown. The main line insulating layer and the zero line insulating layer are both made of cross-linked polyethylene formed by cross-linking peroxide, and the cross-linked polyethylene has good heat resistance and can remarkably improve the current carrying capacity of the cable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an aluminum alloy variable frequency cable provided in an embodiment of the present application.

The cable comprises a main line wire core 1, a main line conductor 11, a main line inner semiconductor layer 12, a main line insulating layer 13, a main line outer semiconductor layer 14, a main line shielding layer 15, a zero line wire core 2, a zero line conductor 21, a zero line insulating layer 22, a wrapping layer 3, an inner sheath layer 4, a first shielding layer 5, a second shielding layer 6, a plastic-coated aluminum tape layer 7, an outer sheath layer 8 and a metal armor layer 9.

Detailed Description

Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the related art. Therefore, the present invention is an improvement of the prior art, which substantially lies in the connection relationship between hardware, not in the functions and methods themselves, that is, the present invention relates to a few functions and methods, but does not include the improvements proposed in the functions and methods themselves. The present invention is described for better illustration of the function and method for better understanding of the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Referring to fig. 1, the application provides an aluminum alloy variable frequency cable, including cable core, around covering 3 and oversheath layer 8, the cable core includes three thread sinle silks 1 and three zero line sinle silks 2, and two liang of tangency of three thread sinle silks 1 are article style of calligraphy, and three zero line sinle silks 2 set up respectively between thread sinle silks 1, and tangent with thread sinle silk 1, the cladding is in the cable core periphery around covering 3, oversheath layer 8 cladding is around covering 3 periphery, thread sinle silk 1 includes thread conductor 11, thread inner semiconductor layer 12, thread insulating layer 13, thread outer semiconductor layer 14 and thread shielding layer 15 from interior to exterior in proper order, zero line sinle silk 2 includes zero line conductor 21 and zero line insulating layer 22 from interior to exterior in proper order; the main line conductor 11 and the zero line conductor 21 both adopt aluminum alloy conductors; the main line insulating layer 13 and the zero line insulating layer 22 are both made of cross-linked polyethylene formed by cross-linking peroxide; the main line inner semiconductor layer 12 and the main line outer semiconductor layer 14 are made of semiconductor rubber, and the main line shielding layer 15 is formed by weaving copper wires.

According to the method, a main line inner semiconductor layer 12 and a main line outer semiconductor layer 14 are arranged on a main line wire core 1, and both the main line inner semiconductor layer 12 and the main line outer semiconductor layer 14 are made of semiconductor rubber; the main line inner semiconductor layer 12 is disposed between the main line conductor 11 and the main line insulating layer 13, and can be in good contact with the main line insulating layer 13 to prevent partial discharge between the main line conductor 11 and the main line insulating layer 13; the main line outer semiconductor layer 14 is disposed between the main line insulating layer 13 and the main line shielding layer 15, and can be in good contact with the main line insulating layer 13 to prevent local discharge between the main line insulating layer 13 and the main line shielding layer 15; the main line wire core 1 is also provided with a main line shielding layer 15 which can play a role in shielding an electric field and preventing insulation breakdown between cable cores. The main line insulating layer 13 and the zero line insulating layer 22 are both made of cross-linked polyethylene formed by cross-linking peroxide, and the cross-linked polyethylene has good heat resistance and can obviously improve the current carrying capacity of the cable.

Furthermore, the aluminum alloy conductor is formed by stranding a plurality of aluminum alloy wires. The aluminum alloy is AA8030 aluminum alloy which has better flexibility, conductivity and creep resistance.

Preferably, still include first shielding layer 5 and second shielding layer 6 around between covering 3 and the oversheath layer 8, the cladding of second shielding layer 6 is in 5 peripheries of first shielding layer, first shielding layer 5 adopts the textile of polyester multifilament, second shielding layer 6 adopts the copper wire to weave and forms.

Set up first shielding layer 5 and second shielding layer 6 around between covering 3 and oversheath layer 8, this kind of double-deck shielding setting not only can restrain the electromagnetic wave and outwards launch, still can be used to carrying out the decay to outside electromagnetism brokenly, reduces the interference of external electromagnetic wave to the cable core, has further improved this application electromagnetic shield performance, has improved transmission quality.

Preferably, the wrapping layer 3 is formed by wrapping glass fiber cloth. The glass fiber cloth has good heat insulation performance, and can improve the weather resistance of the cable.

Preferably, still be equipped with inner sheath layer 4 around between covering 3 and the first shielding layer 5, this inner sheath layer 4 adopts the extruded package of polyolefin to form. The outer sheath layer 8 is formed by extruding polyolefin.

The inner sheath layer 4 and the outer sheath layer 8 are both formed by extruding polyolefin, and have the advantages of small relative density, chemical resistance, good water resistance, good mechanical strength and electrical insulation, and the mechanical strength and the insulation performance of the cable can be further improved.

Preferably, the cable core gap is filled with a flame retardant material. And a plastic-coated aluminum tape layer 7 is arranged between the outer sheath layer 8 and the second shielding layer 6. The outer sheath layer 8 is also wrapped with a metal armor layer 9, and the metal armor layer 9 is armored by an AA5000 aluminum alloy belt.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (8)

1. An aluminum alloy variable frequency cable comprises a cable core, a wrapping layer (3) and an outer sheath layer (8), the cable core comprises three main line wire cores (1) and three zero line wire cores (2), every two of the three main line wire cores (1) are tangent to each other and are in a triangular shape, the three zero line wire cores (2) are respectively arranged between the main line wire cores (1) and are tangent to the main line wire cores (1), the wrapping layer (3) is coated on the periphery of the cable core, the outer sheath layer (8) is coated on the periphery of the wrapping layer (3), it is characterized in that the main line wire core (1) sequentially comprises a main line conductor (11), a main line inner semiconductor layer (12), a main line insulating layer (13), a main line outer semiconductor layer (14) and a main line shielding layer (15) from inside to outside, the zero line core (2) sequentially comprises a zero line conductor (21) and a zero line insulating layer (22) from inside to outside; the main line conductor (11) and the zero line conductor (21) are both aluminum alloy conductors; the main line insulating layer (13) and the zero line insulating layer (22) are both made of cross-linked polyethylene formed by cross-linking peroxide; the main line inner semiconductor layer (12) and the main line outer semiconductor layer (14) are made of semiconductor rubber, and the main line shielding layer (15) is formed by weaving copper wires.

2. The aluminum alloy variable frequency cable of claim 1, further comprising a first shielding layer (5) and a second shielding layer (6) between the wrapping layer (3) and the outer sheath layer (8), wherein the second shielding layer (6) is wrapped on the periphery of the first shielding layer (5), the first shielding layer (5) is formed by weaving polyester multifilaments, and the second shielding layer (6) is formed by weaving copper wires.

3. The aluminum alloy frequency conversion cable of claim 1, wherein the wrapping layer (3) is formed by wrapping glass fiber cloth.

4. The aluminum alloy frequency conversion cable of claim 2, wherein an inner sheath layer (4) is further arranged between the wrapping layer (3) and the first shielding layer (5), and the inner sheath layer (4) is formed by extruding polyolefin.

5. Aluminium alloy frequency conversion cable according to claim 2, characterized in that a plastic coated aluminium tape layer (7) is provided between the outer jacket layer (8) and the second shielding layer (6).

6. The aluminum alloy variable frequency cable according to claim 1, wherein the aluminum alloy conductor is stranded from a plurality of aluminum alloy wires.

7. The aluminum alloy variable frequency cable of claim 1, wherein the cable core gap is filled with a flame retardant material.

8. The aluminum alloy frequency conversion cable according to any one of claims 1 to 7, wherein the outer sheath layer (8) is further coated with a metal armor layer (9), and the metal armor layer (9) is armored by an aluminum alloy tape.

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