CN210245141U - Environment-friendly termite-proof biological-resistant high-voltage cross-linked cable - Google Patents

Abstract

The utility model relates to a power cable technical field, concretely relates to environment-friendly termite-proof anti-biotic high-voltage cross-linked cable. The termite-proof composite cable comprises a conductor and a crosslinked polyethylene insulating layer for coating the conductor, wherein an insulating shielding layer is arranged outside the crosslinked polyethylene insulating layer, a buffering water-blocking layer is arranged outside the insulating shielding layer, a corrugated aluminum sleeve is arranged outside the buffering water-blocking layer, a composite termite-proof sheath is arranged outside the corrugated aluminum sleeve, and the composite termite-proof sheath consists of an outer sheath insulating layer prepared from inner-layer high-density polyethylene and an outer termite-proof layer prepared from high-hardness termite-proof polyolefin. This application prevents the ant through adopting compound protection ant sheath, and compound protection ant sheath adopts high density polyethylene and high rigidity special type polyolefin to show the termite resistance ability of having strengthened, has improved greatly and has prevented that the termite bites and eat, and this cable does not have the medicine pollution to the surrounding environment, prevents that the ant performance reaches the ant nest method primary standard that national authority affirmed.

Description

Environment-friendly termite-proof biological-resistant high-voltage cross-linked cable

Technical Field

The utility model relates to a power cable technical field, concretely relates to environment-friendly termite-proof anti-biotic high-voltage cross-linked cable.

Background

The food of termites is mainly wood, grass root, fiber product, etc. Termites attack plastic, rubber, lead, aluminum sheaths, etc., which termites do not regard as food material, but rather act as a destructive action in seeking food.

As the area is determined to be a termite-disaster area by special geographical and climatic conditions in the south, the termite prevention problem of the cable in the south becomes an important problem. Paths of cable lines are all mountain mud backfill, tree roots and hay are numerous, and the environment is very suitable for breeding and breeding of termites. Meanwhile, the cable generates heat during operation to raise the temperature of surrounding soil, so that termites are attracted to avoid nesting in cold seasons, serious termite damage is caused, the termites can bite through the outer protective layer of the cable, the cable is insulated and damped, the insulation resistance is reduced, single-phase grounding short circuit is caused, even explosion is caused, and permanent faults occur in the cable line. At present, the phenomenon of termite damage to cables is quite common.

If the cable is killed or remedied after the cable is found to be damaged by termites, the work difficulty is considerable, and a great deal of manpower and material resources are required to be invested. If preventive work can be done when the cable line is built, much manpower and material resources can be saved. Therefore, there is a need for a way to prevent termite damage to cables in a preventive manner.

The traditional method for preventing termite damage adopts a drug type cable or a poisonous soil termite-proof method, which not only has serious pollution to the environment and certain damage to human bodies, but also causes the insulation resistance of the outer sheath of the cable to be reduced after the termite-proof agent is added, thereby influencing the long-term use of the cable. The long-term use of the pesticide has certain pollution to the soil environment, and the effect of effectively preventing and controlling the termites cannot be achieved.

Disclosure of Invention

The utility model aims at solving the problem that the existing cable is widely damaged by termites and can not be prevented in the early stage as a main angle to solve the termite damage, and providing an environment-friendly termite-proof high-voltage biological cross-linked cable.

The environment-friendly termite-proof biological-resistant high-voltage cross-linked power cable adopts a physical termite-proof method. Has no pollution to soil environment. The ant prevention performance reaches the first-level standard of the ant nest method determined by the national authority.

This patent still provides a termite-proof crosslinked cable suitable for high pressure through the setting to the structure.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:

an environment-friendly termite-proof biological high-voltage cross-linked cable comprises a conductor and a cross-linked polyethylene insulating layer coating the conductor, wherein an insulating shielding layer is arranged outside the cross-linked polyethylene insulating layer, a buffering water-blocking layer is arranged outside the insulating shielding layer, a corrugated aluminum sleeve is arranged outside the buffering water-blocking layer, a composite termite-proof sheath is arranged outside the corrugated aluminum sleeve, and the composite termite-proof sheath consists of an outer sheath insulating layer prepared from inner-layer high-density polyethylene and an outer termite-proof layer prepared from high-hardness termite-proof polyolefin.

Preferably, a semiconductive nylon belt is arranged between the conductor and the crosslinked polyethylene insulating layer.

Preferably, the semiconductive nylon belt is provided with a conductor shielding layer.

Preferably, the composite ant-proof sheath is also provided with a conductive layer.

As the preferred scheme, an anti-corrosion layer is arranged between the corrugated aluminum sleeve and the composite ant-proof sheath.

Preferably, the anticorrosive layer is an asphalt material.

Preferably, the conductor is a copper core multi-strand structure.

Compared with the prior art, the utility model, beneficial effect is: this application prevents the ant through adopting compound protection ant sheath, and compound protection ant sheath adopts high density polyethylene and high rigidity special type polyolefin to show the termite resistance ability of having strengthened, has improved greatly and has prevented that the termite bites and eat, and this cable does not have the medicine pollution to the surrounding environment, prevents that the ant performance reaches the ant nest method primary standard that national authority affirmed. A cable manufacturer (1 + 1) double-layer co-extrusion process, wherein the extrusion molding is carried out at one time; the cost of production equipment and process procedures are not increased.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic diagram of a further improved structure of the present invention.

In the figure: the anti-termite conductive cable comprises a conductor 1, a semiconductive nylon belt 2, a conductor shielding layer 3, a crosslinked polyethylene insulating layer 4, an insulating shielding layer 5, a buffering water-blocking layer 6, a corrugated aluminum sleeve 7, an anti-corrosion layer 8, an outer sheath insulating layer 9, an ant-prevention layer 10 and a conductive layer 11.

Detailed Description

The technical solution of the present invention is further described and illustrated by the following specific embodiments.

Example (b):

an environment-friendly termite-proof biological high-voltage cross-linked cable is shown in figure 1 and comprises a conductor 1 and a cross-linked polyethylene insulating layer 4 coating the conductor 1, wherein the conductor 1 is of a copper core multi-strand structure, a semiconductive nylon belt 2 is arranged outside the conductor 1, a conductor shielding layer 3 is arranged outside the semiconductive nylon belt 2, an insulating shielding layer 5 is arranged outside the cross-linked polyethylene insulating layer 4, a buffering water-blocking layer 6 is arranged outside the insulating shielding layer 5, a corrugated aluminum sleeve 7 is arranged outside the buffering water-blocking layer 6, a composite termite-proof sheath is arranged outside the corrugated aluminum sleeve 7, and the composite termite-proof sheath is composed of an outer sheath insulating layer 9 prepared from inner-layer high-density polyethylene and an termite-proof layer 10 prepared from outer-layer high-hardness termite-proof polyolefin. And a conductive layer 11 is arranged outside the composite ant-proof sheath.

As shown in fig. 2, after the improvement, an anticorrosive layer 8 is arranged between the corrugated aluminum sleeve 7 and the composite ant-proof sheath, and the anticorrosive layer 8 is made of asphalt material. And a conductive layer 11 arranged outside the composite ant-proof sheath.

That is to say, this cable is conductor 1 from interior to exterior in proper order, the semiconduction nylon area 2 that conductor 1 set up outward, the conductor shielding layer 3 that semiconduction nylon area 2 set up outward, crosslinked polyethylene insulating layer 4, the insulating shield layer 5 that crosslinked polyethylene insulating layer 4 set up outward, the buffering water blocking layer 6 that insulating shield layer 5 set up outward, the outer wrinkle aluminium cover 7 that sets up of buffering water blocking layer 6, the anticorrosive coating 8 that wrinkle aluminium cover 7 set up outward, the compound termite-proof sheath that anticorrosive coating 8 set up outward, the conducting layer 11 that compound termite-proof sheath set up outward.

Wherein the content of the first and second substances,

the conductor 1 is a copper core multi-strand structure; the crosslinked polyethylene insulating layer 4 is prepared from crosslinked polyethylene and is used for generating excellent insulating property;

the insulation shielding layer 5 is made of polyethylene and carbon black materials and plays a role of homogenizing an electric field;

the buffering water-blocking layer 6 consists of a semiconductive water-blocking tape and a semiconductive buffering water-blocking tape from inside to outside, the thickness of the semiconductive water-blocking tape is 0.5mm, and the thickness of the semiconductive buffering water-blocking tape is 2.0 mm. During preparation, the semi-conductive water-blocking tape is wound firstly, and then the semi-conductive buffer water-blocking tape is wound;

the anticorrosive coating 8 is an asphalt material;

the composite termite-proof sheath consists of an outer sheath insulating layer 9 prepared from inner-layer high-density polyethylene and a termite-proof layer 10 prepared from outer-layer high-hardness termite-proof polyolefin. Adopting a (1 + 1) double-layer co-extrusion process, and tightly combining two materials with the extrusion thickness of 1.5-2.0 mm;

the thickness of the conductive layer is 0.02 mm.

The environment-friendly termite-proof biological high-voltage cross-linking power cable has the termite-proof structure that the cable outer sheath adopts a composite sheath structure, the outer sheath adopts high-density polyethylene as an outer sheath insulating layer, the outer layer is extruded with high-hardness special polyolefin (i.e. deinsectization or deinsectization material), and the termite-proof material is not added with a termite-proof agent and adopts physical machinery for control. The mechanical and physical properties and electrical properties are good, the bending laying is not influenced, the construction is convenient, the actually measured hardness reaches Shore (D)67, and the excellent biting resistance is realized. The (1 + 1) double-layer co-extrusion process is adopted, and two materials with the extrusion thickness of 1.5-2.0mm are tightly combined, so that the insulating property of the cable outer sheath is ensured, and the cable outer sheath does not have any pollution to the soil environment. The ant prevention performance reaches the first-level standard of the ant nest method determined by the national authority.

The cable product is sent to the insect research institute of Guangdong province for inspection, and the inspection report results are as follows:

the inspection basis is as follows: testing according to the wire and cable termite test method (test ant nest method) of the Chinese people's republic of China standard GB/T2951.38-86

And (4) checking and concluding: the cable surface has no tooth marks damaged by termites, and the experimental registration is first grade.

Although the present invention has been disclosed in the preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can use the above-mentioned method and technical contents to make possible changes and modifications to the technical solution of the present invention without departing from the spirit and scope of the present invention, therefore, any simple modification, equivalent changes and modifications made to the above embodiments by the technical substance of the present invention all belong to the protection scope of the technical solution of the present invention.

Claims (6)

1. The environment-friendly termite-proof biological-resistant high-voltage cross-linked cable comprises a conductor (1) and a cross-linked polyethylene insulating layer (4) coating the conductor (1), wherein a semiconductive nylon belt (2) is arranged outside the conductor (1), a conductor shielding layer (3) is arranged outside the semiconductive nylon belt (2), and an insulating shielding layer (5) is arranged outside the cross-linked polyethylene insulating layer (4), and is characterized in that a buffering water-blocking layer (6) is arranged outside the insulating shielding layer (5), a corrugated aluminum sleeve (7) is arranged outside the buffering water-blocking layer (6), a composite termite-proof sheath is arranged outside the corrugated aluminum sleeve (7), and the composite termite-proof sheath is composed of an outer sheath insulating layer (9) prepared from inner-layer high-density polyethylene and an outer termite-proof layer (10) prepared from outer-layer high-hardness termite-proof polyolefin.

2. The environmentally friendly termite-proof, organism-resistant, high voltage cross-linked cable as recited in claim 1 wherein the composite termite-proof sheath is further provided with a conductive layer (11).

3. The environment-friendly termite-proof, biological and high voltage cross-linked cable as claimed in claim 1, wherein an anti-corrosion layer (8) is arranged between the corrugated aluminum sheath (7) and the composite termite-proof sheath.

4. The environment-friendly termite and organism resistant high-voltage cross-linked cable according to claim 3, wherein the corrosion-resistant layer (8) is an asphalt material.

5. The environmentally friendly termite and organism resistant high voltage crosslinked cable according to claim 1 wherein the conductor (1) is a copper core multi-strand structure.

6. The environment-friendly termite-proof and organism-resistant high-voltage cross-linked cable as claimed in claim 1, wherein the buffering water-blocking layer (6) consists of a semiconductive water-blocking tape and a semiconductive buffering water-blocking tape from inside to outside, the thickness of the semiconductive water-blocking tape is 0.5mm, and the thickness of the semiconductive buffering water-blocking tape is 2.0 mm.

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