CN214377752U - Cluster overhead insulated cable - Google Patents

Abstract

The utility model provides an overhead insulated cable tied in a bundle, overhead insulated cable tied in a bundle include a plurality of cable core, and cable core transposition each other sets gradually conductor, conductor shielding layer, insulating layer, insulation shielding layer, first wind covering bed course, wire shielding layer, strap shielding layer, second around covering bed course, outer jacket from inside to outside. Through adopting specific cable core to set up the mode, can improve the shielding effect of the overhead insulated cable tied in a bundle, improve the weatherability of the overhead insulated cable tied in a bundle.

Description

Cluster overhead insulated cable

Technical Field

The utility model relates to a cable research field, especially a built on stilts insulated cable tied in a bundle.

Background

The market share of the common overhead bare stranded wire is gradually reduced due to the problems of limitation, safety, economy and the like of a plurality of using conditions, and the using amount of the overhead insulated cable in the field of power transmission is increased year by year due to the advantages of high power supply reliability, good power supply safety, convenience in erection and maintenance, reasonable economy and the like. The market has more and more strict requirements on various performance indexes of overhead cable series products.

The aerial insulated cable has to meet the high electrical performance requirement and also has good weather resistance, so that the aerial insulated cable is not easy to generate oxidative decomposition in the sunshine environment for a long time, and the insulating performance is not reduced due to acid-base corrosion and rainwater permeation in the rainy weather environment. The existing overhead insulated cable has poor weather resistance.

Disclosure of Invention

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an overhead insulated cable tied in a bundle, overhead insulated cable tied in a bundle can promote weatherability.

According to the utility model provides an overhead insulated cable tied in a bundle, including a plurality of cable core, cable core twists each other, cable core sets gradually conductor, conductor shielding layer, insulating layer, insulation shielding layer, first around covering bed course, wire shielding layer, strap shielding layer, second around covering bed course, outer jacket from inside to outside.

According to the utility model provides an overhead insulated cable tied in a bundle has following technological effect at least: through adopting specific cable core to set up the mode, can improve the shielding effect of the overhead insulated cable tied in a bundle, improve the weatherability of the overhead insulated cable tied in a bundle.

According to some embodiments of the utility model, the overhead insulated cable tied in a bundle is including strengthening the sinle silk, the cable core encircles strengthen the sinle silk setting.

According to the utility model discloses a some embodiments, strengthen the sinle silk and set gradually metal enhancement layer, protective layer from inside to outside.

According to some embodiments of the invention, the conductor is formed by stranding a plurality of aluminum wires.

According to some embodiments of the utility model, the conductor shielding layer the insulating layer the insulation shielding layer adopt the three-layer crowded package of method altogether in the conductor outside.

According to some embodiments of the invention, the conductor shield and/or the insulation shield is made of a semiconductive polyolefin material.

According to some embodiments of the invention, the insulating layer is made of a cross-linked polyethylene material.

According to some embodiments of the utility model, first around the covering bed course and/or the second is adopted around the covering bed course and is adopted semiconduction buffer belt material.

According to some embodiments of the invention, the outer jacket is a weatherable polyolefin material.

According to some embodiments of the invention, the protective layer is made of a weatherable polyolefin material.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a cross-sectional view of a bundled overhead insulated cable according to the present invention.

Reference numerals:

conductor 1, conductor shielding layer 2, insulating layer 3, insulating shield 4, first package bed course 5, wire shielding layer 6, strap shielding layer 7, the second package bed course 8, outer jacket 9, metal enhancement layer 10, protective layer 11 around.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

According to the utility model provides an aerial insulated cable tied in a bundle, including a plurality of cable core, cable core transposition each other, cable core set gradually conductor 1, conductor shielding layer 2, insulating layer 3, insulation shielding layer 4 from inside to outside, first wind covering bed course 5, wire shielding layer 6, strap shielding layer 7, second around covering bed course 8, outer jacket 9.

According to the utility model provides an overhead insulated cable tied in a bundle protects conductor 1 through setting up compound multilayer structure, and conductor shielding layer 2, insulation shielding layer 4, wire shielding layer 6, strap shielding layer 7 can improve the insulation shielding effect of conductor 1, and first wind covering bed course 5, second are around 8 isolation conductor 1 of covering bed course and external environment to improve cable core's weatherability.

According to some embodiments of the utility model, the overhead insulated cable tied in a bundle is including strengthening the sinle silk, and the cable core encircles and strengthens the sinle silk setting. In some embodiments, the metal reinforcement layer 10 and the protective layer 11 are arranged on the reinforced wire core from inside to outside in sequence. The strength-enhancing wire core can improve the tensile strength of the bunched aerial insulated cable, the tensile strength is directly related to the laying length of the bunched aerial insulated cable, the tensile strength is improved, the laying length of the bunched aerial insulated cable can be prolonged, the upper limit of the laying span of the bunched aerial insulated cable is improved, and therefore the laying cost of the bunched aerial insulated cable is reduced. In some embodiments, the metal reinforcement layer 10 is formed by stranding galvanized steel wires. In some embodiments, a weatherable polyolefin material is used for the protective layer 11. The weather resistance of the reinforced wire core can be improved by the arrangement.

According to some embodiments of the present invention, the conductor 1 is formed by twisting a plurality of aluminum wires.

According to some embodiments of the utility model, conductor shielding layer 2, insulating layer 3, insulation shielding layer 4 adopt the three-layer to crowd the package in the conductor 1 outside altogether with the method. The three-layer co-extrusion process enables the conductor shielding layer 2, the insulating layer 3 and the insulation shielding layer 4 to be formed at one time, can improve the composite effect of the conductor shielding layer 2, the insulating layer 3 and the insulation shielding layer 4, and improves the shielding property and the weather resistance.

According to some embodiments of the present invention, the conductor shield 2 and/or the insulation shield 4 are made of semiconductive polyolefin material.

According to some embodiments of the present invention, the insulating layer 3 is made of a cross-linked polyethylene material. The cross-linked polyethylene material is a polyethylene material treated by a cross-linking irradiation process, has better performance than the common polyethylene material, and can improve the weather resistance of the insulating layer 3.

According to some embodiments of the present invention, the metal wire shielding layer 6 is made of copper wire material.

According to some embodiments of the present invention, the metal tape shielding layer 7 is made of a copper tape material.

According to some embodiments of the utility model, first adopt around covering bed course 5 and/or second around covering bed course 8 to adopt semiconduction buffer tape material.

According to some embodiments of the present invention, the outer sheath 9 is made of a weather-resistant polyolefin material.

A bundled overhead insulated cable according to the present invention is described in detail below in a specific embodiment with reference to fig. 1. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

The bunched aerial insulated cable comprises a reinforcing wire core and three cable wire cores.

The reinforced wire core is sequentially provided with a metal reinforced layer 10 and a protective layer 11 from inside to outside. The cable core is arranged around the reinforcing core. The cable core sets gradually conductor 1, conductor shielding layer 2, insulating layer 3, insulating shielding layer 4, first package bed course 5, wire shielding layer 6, strap shielding layer 7, second package bed course 8, outer jacket 9 from inside to outside.

The conductor 1 is formed by twisting high-quality aluminum monofilaments into strands according to the specified number, pitch and layer number.

The conductor shielding layer 2, the insulating layer 3 and the insulating shielding layer 4 are sequentially extruded outside the conductor 1 in a three-layer co-extrusion crosslinking mode and are used for isolating the contact between the conductor 1 and the outside, improving the insulating property and prolonging the service life. The conductor shielding layer 2 and the insulation shielding layer 4 are made of semiconductive polyolefin materials, and the insulation layer 3 is made of cross-linked polyethylene materials.

First wind covering bed course 5 according to setting for the number of piles in order to take the lid mode to wind the package in the 4 outsides of insulation shield layer, first wind covering bed course 5 adopts semiconduction buffer tape material, first wind covering bed course 5 and 4 direct contact of insulation shield layer, have the effect of blocking water, avoid moisture infiltration insulation shield layer 4 to produce and discharge and puncture cable core even.

The metal wire shielding layer 6 is made of copper wire materials, the number, the interval, the pitch and the number of the metal wire shielding layer 6 are set according to the process and are loosely wound outside the winding cushion layer 5 to conduct induced current and short-circuit current and shield external electromagnetic interference, the metal belt shielding layer 7 is made of copper belt materials, and the metal belt shielding layer 7 is wound outside the metal wire shielding layer 6 in a clearance winding mode and used for tightly binding and fixing the metal wire shielding layer 6.

And the second wrapping cushion layer 8 wraps the outer side of the metal belt shielding layer 7 and has a water blocking effect. The second wrapping cushion layer 8 is made of a semiconductive buffer tape material.

The crowded package of outer jacket 9 is in the second around 8 outsides of covering bed course, and outer jacket 9 adopts resistant polyolefin material of waiting, and inner structure can be protected to outer jacket 9, improves cable core's weatherability, waterproof nature.

The metal reinforcing layer 10 is formed by twisting galvanized steel wires, and the protective layer 11 is made of weather-resistant polyolefin material.

According to the utility model discloses built on stilts insulated cable tied in a bundle, through the design more than adopting, can realize such some functions at least: protect conductor 1 through setting up compound multilayer structure to inject specific arrangement, can improve conductor 1's insulation shield effect, improve cable core's weatherability. The bunched overhead insulated cable has high performance such as reliable power supply, good safety and the like. The method has the characteristics of high longitudinal tensile strength and light weight, and improves the upper limit of the laying span of the product, thereby reducing land acquisition occupation and infrastructure investment and being convenient to erect and maintain.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A bundled overhead insulated cable, comprising:

a plurality of cable core, the mutual transposition of cable core, cable core sets gradually conductor (1), conductor shielding layer (2), insulating layer (3), insulating shield (4), first around covering bed course (5), wire shielding layer (6), strap shielding layer (7), second around covering bed course (8), outer jacket (9) from inside to outside.

2. The bundled overhead insulated cable of claim 1, wherein: the bunched aerial insulated cable comprises a reinforced wire core, wherein the cable core is arranged around the reinforced wire core.

3. The bundled overhead insulated cable of claim 2, wherein: the reinforced wire core is sequentially provided with a metal reinforced layer (10) and a protective layer (11) from inside to outside.

4. The bundled overhead insulated cable of claim 1, wherein: the conductor (1) is formed by twisting a plurality of strands of aluminum wires.

5. The bundled overhead insulated cable of claim 1, wherein: the conductor shielding layer (2), the insulating layer (3) and the insulating shielding layer (4) are extruded and coated on the outer side of the conductor (1) by a three-layer co-extrusion method.

6. The bundled overhead insulated cable of claim 1, wherein: the conductor shielding layer (2) and/or the insulation shielding layer (4) are made of semiconductive polyolefin materials.

7. The bundled overhead insulated cable of claim 1, wherein: the insulating layer (3) is made of cross-linked polyethylene.

8. The bundled overhead insulated cable of claim 1, wherein: the first wrapping cushion layer (5) and/or the second wrapping cushion layer (8) are made of semi-conductive buffer belt materials.

9. The bundled overhead insulated cable of claim 1, wherein: the outer protective layer (9) is made of weather-proof polyolefin material.

10. The bundled overhead insulated cable of claim 3, wherein: the protective layer (11) is made of weather-resistant polyolefin material.

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