CN211125154U

CN211125154U - High-strength cluster overhead insulated cable

Info

Publication number: CN211125154U
Application number: CN202020141983.1U
Authority: CN
Inventors: 温鹏; 马嘉旭; 杨滔; 邓伟杰; 李楷纯
Original assignee: Guangzhou Nanyang Cable Co ltd
Current assignee: Guangzhou Nanyang cable group Co.,Ltd.
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-07-28
Anticipated expiration: 2030-01-21

Abstract

The utility model discloses a high strength's built on stilts insulated cable tied in a bundle, it includes many cable cores, many cable core interval arrangements, and connect through the splice bar between two adjacent cable cores, and each cable core includes conductor, inner insulating layer, tensile enhancement layer and the outer insulating layer that from interior to exterior set gradually, and the material of this tensile enhancement layer is aramid fiber silk. The embodiment of the utility model provides a through including having increased the tensile enhancement layer between insulating layer and the outer insulating layer, and the material of this tensile enhancement layer is aramid fiber silk to can utilize excellence properties such as superhigh intensity, light in weight that aramid fiber silk self has, make the utility model discloses an overhead insulated cable tied in a bundle has higher intensity, thereby makes overhead insulated cable tied in a bundle when the overhead laying operation, can safe and reliable more.

Description

High-strength cluster overhead insulated cable

Technical Field

The utility model relates to an overhead insulated cable technical field especially relates to a high strength's built on stilts insulated cable tied in a bundle.

Background

Because the cost of the bunched overhead insulated cable is far lower than that of the power cable, the bunched overhead insulated cable is generally adopted for power transmission in the process of building and transforming rural power grids in China.

However, most bunched aerial insulated cable's sinle silk is aluminum wire or aluminum alloy wire usually on the market, its intensity is not too big, and the vast majority's topography in the rural area of china is still the mountain region at present, and the regional topography in mountain region is complicated, it is difficult to set up the wire pole, thereby it is bigger to lead to the span of two adjacent wire poles, consequently, erect the bunched aerial insulated cable between the great two wire poles of span, its droop can increase, thereby probably cause the disconnected line of the bunched aerial insulated cable, the condition of breaking appears, and then probably can influence the power supply condition in whole rural area.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model discloses high strength's built on stilts insulated cable tied in a bundle can improve the intensity of cable for when the built on stilts operation of laying, safe and reliable more.

In order to achieve the above object, the utility model provides an overhead insulated cable tied in a bundle with intensity is high, include:

many cable cores, many cable core interval arrangement, and adjacent two connect through the splice bar between the cable core, each the cable core includes conductor, inner insulating layer, tensile enhancement layer and the outer insulating layer that from interior to exterior set gradually, the material of tensile enhancement layer is aramid fiber silk.

As an optional implementation manner, in an embodiment of the present invention, the connection rib is a long strip shape, a plurality of reinforcing ribs are disposed in the connection rib, and a plurality of the reinforcing ribs are disposed along a length direction of the connection rib where the reinforcing ribs are located at intervals.

As an optional implementation manner, in an embodiment of the present invention, each of the reinforcing ribs is an aramid fiber yarn, and a diameter of the reinforcing rib is 0.1mm to 1.0 mm.

As an optional implementation manner, in an embodiment of the present invention, the conductor is a plurality of conductors, and a plurality of the conductors are twisted with each other to form a bundle.

As an optional implementation manner, in an embodiment of the present invention, each of the conductors is a hard aluminum wire or a heat-resistant aluminum alloy wire, and a diameter of each of the conductors is 2.10mm to 4.00 mm.

As an optional implementation manner, in an embodiment of the present invention, the thickness of the tensile reinforcement layer is 0.1mm to 0.5 mm.

As an optional implementation manner, in an embodiment of the present invention, the material of the inner insulating layer is a water tree-resistant crosslinked polyethylene insulating material, and the thickness of the inner insulating layer is 0.7mm to 1.8 mm.

As an optional implementation manner, in an embodiment of the present invention, the material of the outer insulating layer is a weather-resistant radiation cross-linked polyethylene insulating material, and the thickness of the outer insulating layer is 1.0mm to 2.0 mm.

As an optional implementation manner, in an embodiment of the present invention, the outer insulating layer of each cable core extends outward to form a phase identification line.

As an optional implementation manner, in the embodiment of the present invention, the number of the cable cores is four, and the four cable cores are arranged in a square shape and respectively include a first cable core, a second cable core, a third cable core and a fourth cable core;

the cable comprises a first cable core, a second cable core, a third cable core and three connecting ribs, wherein the connecting ribs are three and are respectively a first connecting rib, a second connecting rib and a third connecting rib, two ends of the first connecting rib are respectively connected with the first cable core and the second cable core, two ends of the second connecting rib are respectively connected with the second cable core and the third cable core, and two ends of the third cable core are respectively connected with the third cable core and the fourth cable core.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the embodiment of the utility model provides a pair of high strength's built on stilts insulated cable tied in a bundle is through having increased the tensile enhancement layer between inner insulating layer and outer insulating layer, and the material of this tensile enhancement layer is aramid fiber silk to can utilize excellence properties such as superhigh intensity, light in weight that aramid fiber silk self has, make the utility model discloses a built on stilts insulated cable tied in a bundle has higher intensity, thereby makes built on stilts insulated cable tied in a bundle when laying the operation, can safe and reliable more.

Furthermore, the utility model discloses owing to be equipped with the strengthening rib in the splice bar, can increase the joint strength between each cable core more effectively to can further improve the fail safe nature of the overhead insulated cable tied in a bundle when built on stilts laying operation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an overhead insulated bunched cable according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The embodiment of the utility model discloses high strength's built on stilts insulated cable tied in a bundle through adding the tensile enhancement layer between inner insulating layer and outer insulating layer, and the material of this tensile enhancement layer is aramid fiber silk, makes the utility model discloses a built on stilts insulated cable tied in a bundle has higher intensity to make built on stilts insulated cable tied in a bundle when laying the operation, can safe and reliable more.

The technical solution of the present invention will be further described with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a high-strength bundled overhead insulated cable, which includes a plurality of cable cores. Many cable cores interval arrangement, and connect through the splice bar between two adjacent cable cores, each cable core includes conductor 10, inner insulation layer 11, tensile enhancement layer 12 and the outer insulation layer 13 that from interior to exterior set gradually, and the material of this tensile enhancement layer 12 is aramid fiber silk.

The high-strength bunched overhead insulated cable can be applied to power grid construction in rural areas in China, can be used as a carrier of transmission power, particularly can be applied to places with complex terrain and difficult telegraph poles, and can solve the problems that the hanging force of the bunched overhead insulated cable is increased due to the fact that the bunched overhead insulated cable is erected between two telegraph poles with large span, and therefore the bunched overhead insulated cable is broken and broken.

This scheme of adoption, because the material of tensile enhancement layer 12 adopts aramid fiber silk, can have the high performance of superelevation intensity through utilizing aramid fiber silk itself, so that the utility model discloses an overhead insulated cable tied in a bundle has higher intensity, can improve the tensile strength that overhead insulated cable tied in a bundle to a great extent to make overhead insulated cable tied in a bundle when the overhead operation of laying, can be safe and reliable more, avoid causing overhead insulated cable tied in a bundle to break, the condition that opens circuit appears.

In addition, aramid fiber silk has high temperature resistant, light in weight and good insulating nature and ageing resistance in addition to the good performance of superhigh strength, consequently, adds tensile enhancement layer 12 between inner insulation layer 11 and outer insulation layer 13, can also effectively improve the mechanical properties of the overhead insulated cable of bundling, makes the overhead insulated cable of bundling have good ageing resistance, does not make the overhead insulated cable of bundling whole weight overweight moreover yet.

Optionally, the thickness of the tensile reinforcement layer 12 is 0.1mm to 0.5 mm. For example: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, or the like. The thickness of the tensile reinforced layer 12 is controlled within the range of 0.1 mm-0.5 mm, so that the bundled overhead insulated cable has higher strength, the condition that the weight of the tensile reinforced layer 12 is too heavy due to too thick thickness of the tensile reinforced layer 12 can be avoided, and the bundled overhead insulated cable can still meet the light design requirement.

As shown in fig. 1, in this embodiment, the direction of the viewing angle of the viewer viewing fig. 1 is taken as a reference direction, the connection rib may be a long strip shape, which includes two ends in the length direction, and the material of the connection rib may be a weather-resistant radiation cross-linked polyethylene insulating material, so that the connection rib has good weather resistance and aging resistance, and the condition that the connection rib is broken to separate each cable core and affect the use of the bundled aerial insulated cable is prevented.

The utility model discloses a cable core is optional to be four, and wherein these four cable cores are square range setting, are first cable core 1a, second cable core 1b, third cable core 1c and fourth cable core 1d respectively. In order to connect the four cable cores, the number of the connecting ribs can be three, namely a first connecting rib 2a, a second connecting rib 2b and a third connecting rib 2c, two ends of the first connecting rib 2a are respectively connected to the first cable core 1a and the second cable core 1b, two ends of the second connecting rib 2b are respectively connected to the second cable core 1b and the third cable core 1c, and two ends of the third cable core 2c are respectively connected to the third cable core 1c and the fourth cable core 1 d.

It can be understood that, in other embodiments, the number of the cable cores may also be two, and correspondingly, the connecting rib may be one, which is specifically adjusted according to an actual application scenario or an installation situation.

In order to improve the connection strength of the connection ribs, a plurality of reinforcing ribs 20 are arranged in each connection rib. Specifically, a plurality of reinforcing ribs 20 are provided at intervals along the longitudinal direction of the connecting rib where they are located. Similarly, the material of each reinforcing rib 20 may be aramid fiber, and the diameter of each reinforcing rib 20 may be 0.1mm to 1.0mm, for example: 0.1mm, 0.3mm, 0.5mm, 0.7mm, 1.0mm, or the like. Therefore, the connection strength of the connecting ribs can be enhanced, and meanwhile, the whole weight of the bunched overhead insulated cable is not too heavy, so that the bunched overhead insulated cable still meets the light design requirement.

In this embodiment, the conductors 10 of the cable core may be selected from a plurality of conductors 10, and the plurality of conductors 10 may be twisted into a bundle by using a pressing and twisting mold, and the pressing coefficient of the cable core may be 0.88-0.94, for example: 0.88, 0.91, 0.95, 0.90, 0.93, or 0.94, etc. The compression coefficient of the cable core is controlled within the range of 0.88-0.94, so that the plurality of conductors 10 can be tightly and firmly twisted and are not easy to loosen, and the durability of the bunched aerial insulated cable is improved.

It will be appreciated that the number of conductors 10 may be determined according to the actual use requirements, so that an optimum use of resources may be achieved.

Further, each conductor 10 may be selected as a hard aluminum wire or a heat-resistant aluminum alloy wire, and each conductor 10 may have a diameter of 2.10mm to 4.00mm, for example: 2.10mm, 2.50mm, 2.90mm, 3.40mm, 3.80mm, 4.00mm, or the like. This is favorable to improving the current-carrying capacity of the overhead insulated cable of bundling.

In this embodiment, the material of the inner insulating layer 11 is a water tree resistant cross-linked polyethylene insulating material, and the thickness of the inner insulating layer 11 is 0.7mm to 1.8mm, for example: 0.7mm, 1.0mm, 1.3mm, 1.6mm or 1.8mm, etc., can solve the problem that the service life of the current bunched aerial insulated cable is shortened due to the branch of the polyethylene insulating layer, namely, the service life of the bunched aerial insulated cable can be prolonged by adopting the water-tree-resistant crosslinked polyethylene insulating material as the material of the inner insulating layer 11 of the bunched aerial insulated cable.

Similarly, the material of the outer insulating layer 13 of the present embodiment may be a weather-resistant radiation crosslinked polyethylene insulating material, and the thickness of the outer insulating layer 13 is 1.0mm to 2.0mm, for example: 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2.0mm, or the like. This weatherability irradiation crosslinked polyethylene insulating material itself has good weatherability and ageing resistance, can avoid the outer insulation layer fracture to can further prolong the utility model discloses the overhead insulated cable's of bundling life.

In this embodiment, in order to identify the phase of each cable core and distinguish each cable core from another, the outer insulating layer 13 of each cable core extends outward with a phase identification line 14. The phase mark line 14 may be a raised line formed by extruding the outer insulating layer 13 at one time, and the material of the phase mark line may be the same as that of the outer insulating layer 13, and may be a weather-resistant radiation cross-linked polyethylene insulating material.

Further, the phase marker 14 may be extended from the surface of the outer insulating layer 13 and located at the outer circumference of the cable core.

The high-strength bunched overhead insulated cable disclosed by the embodiment of the invention is described in detail, a specific example is applied to explain the principle and the implementation mode of the invention, and the description of the above embodiment is only used for helping to understand the high-strength bunched overhead insulated cable and the core idea thereof; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The utility model provides a high strength's overhead insulated cable tied in a bundle which characterized in that includes:

2. The high strength bundled overhead insulated cable of claim 1, wherein the tie bar is elongated, and a plurality of reinforcing ribs are disposed within the tie bar and spaced apart along the length of the tie bar in which they are disposed.

3. The high-strength bundled aerial insulated cable according to claim 2, characterized in that each of the reinforcing ribs is aramid fiber, and the diameter of the reinforcing rib is 0.1mm to 1.0 mm.

4. The high strength bundled overhead insulated cable according to any one of claims 1 to 3, wherein the conductor is a plurality of conductors, and a plurality of the conductors are twisted with each other into a bundle.

5. The high-strength bundled overhead insulated cable according to claim 4, wherein each of the conductors is a hard aluminum wire or a heat-resistant aluminum alloy wire, and the diameter of each of the conductors is 2.10mm to 4.00 mm.

6. The high-strength bundled aerial insulated cable according to any one of claims 1 to 3, characterized in that the thickness of the tensile reinforcement layer is 0.1mm to 0.5 mm.

7. The high-strength bundled aerial insulated cable according to any one of claims 1 to 3, characterized in that the material of the inner insulating layer is a water tree resistant cross-linked polyethylene insulating material, and the thickness of the inner insulating layer is 0.7mm to 1.8 mm.

8. The high-strength bundled aerial insulated cable according to any one of claims 1 to 3, characterized in that the material of the outer insulating layer is a weather-resistant radiation crosslinked polyethylene insulating material, and the thickness of the outer insulating layer is 1.0 mm-2.0 mm.

9. The high strength bundled overhead insulated cable according to any one of claims 1 to 3, wherein the outer insulating layer of each cable core extends outward with a phase identification line.

10. The high-strength bundled aerial insulated cable according to any one of claims 1 to 3, wherein the number of the cable cores is four, and the four cable cores are arranged in a square shape and respectively comprise a first cable core, a second cable core, a third cable core and a fourth cable core;