阅读说明：本技术 高压电缆螺旋保护套 (High-voltage cable spiral protective sleeve ) 是由 姜洋 张锐 王永刚 张宝成 王长亮 于 2021-07-23 设计创作，主要内容包括：本发明公开了高压电缆螺旋保护套,包括保护套,保护套内侧设置有热熔胶层,热熔胶层内侧设置有固定层,固定层的内侧设置有锚固层,固定层内部等距设置有多个穿孔,锚固层内部等距设置有多个锚固孔,多个锚固孔与多个穿孔一一对应,热熔胶层内部的热熔胶穿过穿孔填充满锚固孔的内部,锚固层的内侧设置有金属铠装,金属铠装内侧设置有防火层,防火层的内侧设置有缓冲层,缓冲层内侧设置有三个缆芯。该产品在固定层内部增设多个穿孔同时在锚固层内部设置多个与之对应的锚固孔,进而能够在热熔胶融化后融入内部,冷却后变成一个锚入内部结构,使其结构更加稳定,保证了保护套不会脱落,更加实用,防火层和阻水层的设计,更加能增加电缆的整体安全性能。(The invention discloses a spiral protective sleeve for a high-voltage cable, which comprises a protective sleeve, wherein a hot-melt adhesive layer is arranged on the inner side of the protective sleeve, a fixing layer is arranged on the inner side of the hot-melt adhesive layer, an anchoring layer is arranged on the inner side of the fixing layer, a plurality of through holes are equidistantly arranged in the fixing layer, a plurality of anchoring holes are equidistantly arranged in the anchoring layer, the plurality of anchoring holes correspond to the plurality of through holes one by one, hot melt adhesive in the hot-melt adhesive layer penetrates through the through holes to fill the inside of the anchoring holes, a metal armor is arranged on the inner side of the anchoring layer, a fireproof layer is arranged on the inner side of the metal armor, a buffer layer is arranged on the inner side of the fireproof layer, and three cable cores are arranged on the inner side of the buffer layer. This product sets up a plurality of anchor holes that correspond at the anchor in situ portion simultaneously at the inside a plurality of perforation of addding of fixed layer, and then can melt the back at the hot melt adhesive and melt inside, becomes an anchor after the cooling and goes into inner structure, makes its structure more stable, has guaranteed that the protective sheath can not drop, and is more practical, and the overall security performance of cable can be increased more to the design of flame retardant coating and water blocking layer.)

1. High tension cable spiral protective sheath, including protective sheath (1), its characterized in that, protective sheath (1) inboard is provided with hot melt adhesive layer (2), hot melt adhesive layer (2) inboard is provided with fixed layer (3), the inboard of fixed layer (3) is provided with anchor layer (4), the inside equidistance of fixed layer (3) is provided with a plurality of perforation (16), the inside equidistance of anchor layer (4) is provided with a plurality of anchor hole (17), and is a plurality of anchor hole (17) and a plurality of perforation (16) one-to-one, the hot melt adhesive of hot melt adhesive layer (2) inside passes perforation (16) are filled with the inside of anchor hole (17), the inboard of anchor layer (4) is provided with metal armor (5), metal armor (5) inboard is provided with flame retardant coating (6), the inboard of flame retardant coating (6) is provided with buffer layer (7), and three cable cores (8) are arranged on the inner side of the buffer layer (7).

2. The spiral protective sleeve for high-voltage cables as claimed in claim 1, wherein the protective sleeve (1) is spirally wrapped on the outer side of the fixing layer (3) and fixed by the hot melt adhesive inside the hot melt adhesive layer (2).

3. Spiral protective casing for high-voltage cables, according to claim 1, characterized in that said casing (1) is made of polyvinyl chloride.

4. Spiral protective casing for high-voltage cables according to claim 1, characterised in that said fixing layer (3) is made of a fluororubber material, said fixing layer (3) being provided with a thickness of 6 mm.

5. Spiral protective sheath for high-voltage cables according to claim 1, characterized in that said anchoring layer (4) is made of polyvinyl chloride, said anchoring layer (4) being provided with a thickness of 2 mm.

6. Spiral protective sheath for high-voltage cables, according to claim 1, characterized in that said fire-resistant layer (6) is made of asbestos-rubber material, said fire-resistant layer (6) being provided with a thickness of 8 mm.

7. Spiral sheath for high-voltage cables, according to claim 1, characterized in that said buffer layer (7) is filled with pp fibres.

8. Spiral protective sleeve for high-voltage cables according to claim 1, characterized in that the conductor (1) is arranged in the center of the inside of the cable core (8), an inner semi-conducting layer (14) is arranged outside the conductor (1), an insulating layer (13) is arranged outside the inner semi-conducting layer (14), an outer semi-conducting layer (12) is arranged outside the insulating layer (13), a shielding layer (11) is arranged outside the outer semi-conducting layer (12), a water-blocking layer (10) is arranged outside the shielding layer (11), and a pipe sleeve (9) is arranged outside the water-blocking layer (10).

Technical Field

The invention relates to the technical field of high-voltage cables, in particular to a spiral protective sleeve of a high-voltage cable.

Background

The cable is an electric energy or signal transmission device, usually composed of several or several groups of wires, and the manufacture of the wire and cable is completely different from the production mode of most electromechanical products. Electromechanical products typically employ the assembly of parts into components, and the reassembly of multiple parts into a single product, with the product being metered in units or pieces. The wire and cable are in basic unit of measurement of length. All the electric wires and cables are made by processing conductors, and adding insulation, shielding, cabling, sheath and the like layer by layer on the periphery of the conductors to form electric wire and cable products. The more complex the product structure, the more the superimposed layers, wherein the high-voltage cable is one of the power cables, which is used for transmitting power between 1kv and 1000kv, and is mostly applied to power transmission and distribution, and the components of the high-voltage cable from inside to outside comprise a conductor, insulation, an inner protective layer, filling materials (armor) and outer insulation. Of course, the armored high-voltage cable is mainly used for being buried in the ground, can resist the compression with high strength on the ground, and can prevent other external force from damaging.

The outside spiral shell of traditional high tension cable all fixes through high temperature resistant hot melt adhesive, but still can lead to outside hot melt adhesive to take place to drop in inside fixed layer for a long time.

Disclosure of Invention

The present invention is directed to a spiral protective sheath for high voltage cables, which solves the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: high tension cable spiral protective sheath, including the protective sheath, its characterized in that, the protective sheath inboard is provided with the hot melt adhesive layer, the hot melt adhesive layer inboard is provided with the fixed layer, the inboard of fixed layer is provided with the anchor layer, and the inside equidistance of fixed layer is provided with a plurality of perforation, the inside equidistance of anchor layer is provided with a plurality of anchor holes, and is a plurality of the anchor hole is with a plurality of the perforation one-to-one, the inside hot melt adhesive of hot melt adhesive layer passes it is full to fill in the perforation the inside in anchor hole, the inboard on anchor layer is provided with the metal armor, the metal armor inboard is provided with the flame retardant coating, the inboard of flame retardant coating is provided with the buffer layer, the buffer layer inboard is provided with three cable core.

As a further scheme of the invention, the protective sleeve is spirally wrapped on the outer side of the fixed layer and is fixed through the hot melt adhesive in the hot melt adhesive layer.

As a further scheme of the invention, the protective sleeve is made of polyvinyl chloride.

As a further scheme of the invention, the fixing layer is made of fluororubber, and the thickness of the fixing layer is set to be 6 mm.

As a further scheme of the invention, the anchoring layer is made of polyvinyl chloride, and the thickness of the anchoring layer is set to be 2 mm.

As a further scheme of the invention, the fireproof layer is made of asbestos rubber, and the thickness of the fireproof layer is set to be 8 mm.

In a further aspect of the present invention, the buffer layer is filled with pp fiber material.

In a further aspect of the present invention, a conductor is disposed at the center inside the cable core, an inner semi-conducting layer is disposed outside the conductor, an insulating layer is disposed outside the inner semi-conducting layer, an outer semi-conducting layer is disposed outside the insulating layer, a shielding layer is disposed outside the outer semi-conducting layer, a water blocking layer is disposed outside the shielding layer, and a pipe sleeve is disposed outside the water blocking layer.

Compared with the prior art, the invention has the following beneficial effects:

this product sets up a plurality of anchor holes that correspond at the anchor in situ portion simultaneously at the inside anchor hole that sets up of fixed layer, and then can melt the back at the hot melt adhesive and melt inside, becomes an anchor after the cooling and goes into inner structure, makes its structure more stable, has guaranteed that the protective sheath can not drop, and is more practical, and the whole security performance of cable can be increased more to the design of the water blocking layer in the inside flame retardant coating and the cable core outside simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed 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 to obtain other drawings without creative efforts.

FIG. 1 is a schematic illustration of an internal cross-section according to an embodiment of the invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1 according to an embodiment of the invention;

figure 3 is a schematic structural diagram of a cable core according to an embodiment of the invention.

Reference numerals:

1. a protective sleeve; 2. a hot melt adhesive layer; 3. a fixed layer; 4. an anchoring layer; 5. metal armor; 6. a fire barrier layer; 7. a buffer layer; 8. a cable core; 9. pipe sleeve; 10. a water resistant layer; 11. a shielding layer; 12. an outer semiconductive layer; 13. an insulating layer; 14. an inner semiconductive layer; 15. a conductor; 16. perforating; 17. and (4) anchoring holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the spiral protective sleeve for the high-voltage cable according to the embodiment of the invention includes a protective sleeve 1, and is characterized in that a hot-melt adhesive layer 2 is disposed on an inner side of the protective sleeve 1, a fixing layer 3 is disposed on an inner side of the hot-melt adhesive layer 2, an anchoring layer 4 is disposed on an inner side of the fixing layer 3, a plurality of through holes 16 are equidistantly disposed in the fixing layer 3, a plurality of anchoring holes 17 are equidistantly disposed in the anchoring layer 4, the plurality of anchoring holes 17 correspond to the plurality of through holes 16 one by one, a hot-melt adhesive in the hot-melt adhesive layer 2 penetrates through the through holes 16 to fill the anchoring holes 17, a metal armor 5 is disposed on an inner side of the anchoring layer 4, a fire-proof layer 6 is disposed on an inner side of the metal armor 5, a buffer layer 7 is disposed on an inner side of the fire-proof layer 6, and three cable cores 8 are disposed on an inner side of the buffer layer 7.

The working principle is as follows:

according to the scheme of the invention, the protective sleeve 1 is spirally wrapped on the outer side of the fixed layer 3 and is fixed by the hot melt adhesive in the hot melt adhesive layer 2, so that the hot melt adhesive has good flowing property and stronger adhesion force when being melted.

According to the scheme, the protective sleeve 1 is made of the polyvinyl chloride material, so that the external structural strength of the cable is improved.

According to the scheme of the invention, the fixing layer 3 is made of the fluororubber material, the thickness of the fixing layer 3 is set to be 6 mm, the overall chemical property and physical property of the fluororubber are more stable, and the cable is safer.

According to the scheme, the anchoring layer 4 is made of polyvinyl chloride, and the thickness of the anchoring layer 4 is set to be 2 mm.

According to the scheme of the invention, the fireproof layer 6 is made of asbestos rubber, and the thickness of the fireproof layer 6 is set to be 8 mm.

According to the scheme of the invention, the buffer layer 7 is filled with pp fiber materials.

According to the scheme of the invention, the conductor 1 is arranged at the center inside the cable core 8, the inner semi-conducting layer 14 is arranged outside the conductor 1, the insulating layer 13 is arranged outside the inner semi-conducting layer 14, the outer semi-conducting layer 12 is arranged outside the insulating layer 13, the shielding layer 11 is arranged outside the outer semi-conducting layer 12, the water-resistant layer 10 is arranged outside the shielding layer 11, and the pipe sleeve 9 is arranged outside the water-resistant layer 10.

This product is adding a plurality of perforation 16 and setting up a plurality of anchor holes 17 that correspond with it in anchor layer 4 inside simultaneously in fixed layer 3 inside, and then can melt the back at the hot melt adhesive and melt inside, becomes an anchor after the cooling and goes into inner structure, makes its structure more stable, has guaranteed that protective sheath 1 can not drop, and is more practical, and the whole security performance of cable can be increased more to the design of the water blocking layer 10 in the inside flame retardant coating 6 and the cable core 8 outside simultaneously.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.