CN217061505U

CN217061505U - High-strength cable for 35KV and below medium-voltage power

Info

Publication number: CN217061505U
Application number: CN202220182832.XU
Authority: CN
Inventors: 叶伟; 郑雷; 杨昌金
Original assignee: Lishui Feizhou Cable Co ltd
Current assignee: Lishui Feizhou Cable Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-07-26
Anticipated expiration: 2032-01-24

Abstract

The utility model provides a 35KV reaches following middling pressure high strength cable for electric power, including interior protective sheath, steel strip armor, outside sheath, insulating cover, outer shielding layer, inner shielding layer, metallic conductor and packing, wherein: the steel-tape armor is adhered to the inner wall of the inner protective sleeve, the outer-side sheath is adhered to the outer surface of the inner protective sleeve, and the insulating sleeve is embedded in the steel-tape armor; the outer shielding layer is adhered to the outer surface of the insulating sleeve, the inner shielding layer is adhered to the inner surface of the insulating sleeve, and the metal conductor is embedded in the inner shielding layer; the filler is filled inside a gap between the steel tape armor and the outer shield layer. The utility model discloses interior protective sheath, outside sheath, the setting on outer shielding layer and inner shield layer has and is equipped with diamagnetic ability, and bulk strength is strong.

Description

High-strength cable for 35KV and below medium-voltage power

Technical Field

The utility model belongs to the technical field of the cable, especially, relate to a high strength cable for 35KV and following middling pressure electric power.

Background

With the rapid development of power cable buried laying engineering and the higher requirements for cable protection, the cable protection sleeve is made of Polyethylene (PE) and high-quality steel pipes through sand blasting and shot blasting pretreatment, plastic dipping or coating, and heating and curing processes. It is one of the most commonly used electrically insulating tubes for protecting wires and cables. It is widely used because of its excellent insulating properties, high chemical stability, no rusting, no aging, and adaptability to severe environments.

The following advantages can be achieved by using a cable protective sheath to protect a cable: 1. good corrosion resistance and long service life, and can be used in a humid saline-alkali zone. 2. The flame retardant and heat resistant properties are good, and the flame retardant can be used at a high temperature of 130 ℃ for a long time without deformation and can not burn when meeting fire. 3. High strength and rigidity. The concrete protective layer is not required to be added when the cable is directly buried under a traffic lane, and the construction progress of the cable engineering can be quickened. 4. The cable protection sleeve is a pipe or a pipe fitting which has certain flexibility and can resist damage caused by external heavy pressure and foundation settlement. 5. The anti-interference performance of the external signals is good. 6. The inner wall is smooth, and the cable is not scratched. The design adopts the connected mode of socket joint formula, and easy to assemble connects. The joint is sealed with the rubber sealing ring, so that the cable is suitable for expansion with heat and contraction with cold, and prevents mud and sand from entering, but the existing cable still has the problems of no diamagnetic capability and poor integral strength.

Therefore, it is necessary to develop a high-strength cable for medium-voltage power of 35KV and below.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a 35KV reaches following middling pressure high strength cable for electric power to solve current cable and still having the diamagnetic ability of not possessing, the poor problem of bulk strength. The utility model provides a high strength cable for 35KV and following middling pressure electric power, includes interior protective sheath, steel tape armor, outside sheath, insulating boot, outer shielding layer, internal shield layer, metallic conductor and packing, wherein: the steel-tape armor is adhered to the inner wall of the inner protective sleeve, the outer-side sheath is adhered to the outer surface of the inner protective sleeve, and the insulating sleeve is embedded in the steel-tape armor; the outer shielding layer is adhered to the outer surface of the insulating sleeve, the inner shielding layer is adhered to the inner surface of the insulating sleeve, and the metal conductor is embedded in the inner shielding layer; the filler is filled inside a gap between the steel tape armor and the outer shield layer.

The inner protective sleeve comprises a rubber base layer, a resin layer, a rubber contact layer and a vinyl layer, wherein the resin layer is bonded inside the rubber base layer, and the rubber contact layer is bonded inside the resin layer; the vinyl layer is bonded to the outer side of the rubber base layer.

The outer sheath comprises a main body supporting body, a wear-resistant layer, a compression-resistant reinforcing rib and a tensile reinforcing rib, the wear-resistant layer is bonded on the outer surface of the main body supporting body, and the compression-resistant reinforcing rib and the tensile reinforcing rib are welded; the compression-resistant reinforcing ribs and the tensile reinforcing ribs are embedded in the main body supporting body.

The inner protective sleeve is integrally in a round pipe shape, the rubber base layer and the rubber contact layer in the inner protective sleeve are both made of rubber pipes, and the resin layer in the inner protective sleeve is made of phenolic resin; the inside vinyl layer of interior protective sheath adopts the circular pipeline that polyvinyl acetal made, is favorable to wrapping up the outside of cable completely, and multistage insulating material through self is the utility model discloses the explosive wire can not appear, and the condition such as electric leakage takes place, prevents that the electric current from appearing too big, leads to the condition of puncturing the cable inoxidizing coating to take place.

The inside wearing layer of outside sheath adopts the notched rubber tube of surface zone, and the inside resistance to compression strengthening rib of outside sheath and tensile strengthening rib adopt the steel wire, and the inside resistance to compression strengthening rib shape of this outside sheath is the spiral, is favorable to being in the utility model discloses an outmost inoxidizing coating that forms makes the utility model discloses possess resistance to compression, tensile, the function of anti friction improves greatly the utility model discloses an intensity.

The inner structures of the outer shielding layer and the inner shielding layer are completely consistent, two groups of shielding structures are formed between the outer shielding layer and the inner shielding layer in one inner part and one outer part, and the outer shielding layer and the inner shielding layer integrally adopt rubber tubes; outer shielding layer and internal shield layer are inside to be annotated there is copper metal mesh grid fabric, are favorable to being in the utility model discloses a metallic conductor's the outside forms two sets of shielding layers, prevents to lead to electromagnetic induction because of the cable contact is too close, influences peripheral other equipment.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses the setting of interior protective sheath is favorable to wrapping up the outside of cable completely, and multistage insulating material through self is the utility model discloses the line explosion can not appear, and the condition such as electric leakage takes place, prevents that the electric current from appearing too big, leads to the condition emergence of puncturing the cable inoxidizing coating.

2. The utility model discloses the setting of outside sheath is favorable to being in the utility model discloses an outmost inoxidizing coating that forms makes the utility model discloses possess the resistance to compression, the tensile, the function of antifriction improves greatly the utility model discloses an intensity.

3. The utility model discloses the setting on outer shielding layer and internal shield layer is favorable to being in the utility model discloses a metal conductor's the outside forms two sets of shielding layers, prevents to lead to electromagnetic induction because of the cable contact is too near, influences peripheral other equipment.

Drawings

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

Fig. 2 is a schematic structural view of the inner protective sheath of the present invention.

Fig. 3 is a schematic structural view of the outer sheath of the present invention.

In the figure:

inner protective cover 1, rubber substrate 11, resin layer 12, rubber contact layer 13, ethylene layer 14, steel tape armor 2, outside sheath 3, main part supporter 31, wearing layer 32, resistance to compression strengthening rib 33, tensile strengthening rib 34, insulating boot 4, outer shielding layer 5, inner shield layer 6, metallic conductor 7, fill 8.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below, 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 efforts shall belong to the protection scope of the present invention.

As shown in figures 1 to 3.

The utility model provides a pair of 35KV and following middling pressure high strength cable for electric power, including interior protective sheath 1, steel tape armor 2, outside sheath 3, insulating cover 4, outer shielding layer 5, inner shielding layer 6, metallic conductor 7 and packing 8, wherein: the steel tape armor 2 is adhered to the inner wall of the inner protective sleeve 1, the outer side protective sleeve 3 is adhered to the outer surface of the inner protective sleeve 1, and the insulating sleeve 4 is embedded in the steel tape armor 2; the outer shielding layer 5 is adhered to the outer surface of the insulating sleeve 4, the inner shielding layer 6 is adhered to the inner surface of the insulating sleeve 4, and the metal conductor 7 is embedded in the inner shielding layer 6; the filler 8 is filled inside the gap between the steel tape armor 2 and the outer shield layer 5.

The inner protective sleeve 1 comprises a rubber base layer 11, a resin layer 12, a rubber contact layer 13 and a vinyl layer 14, wherein the resin layer 12 is bonded inside the rubber base layer 11, and the rubber contact layer 13 is bonded inside the resin layer 12; the vinyl layer 14 is bonded to the outer side of the rubber base layer 11.

The outer sheath 3 comprises a main body support 31, a wear-resistant layer 32, compression-resistant reinforcing ribs 33 and tensile reinforcing ribs 34, the wear-resistant layer 32 is bonded on the outer surface of the main body support 31, and the compression-resistant reinforcing ribs 33 and the tensile reinforcing ribs 34 are welded; the compression-resistant reinforcing ribs 33 and the tensile-resistant reinforcing ribs 34 are embedded in the main body support 31.

The utility model provides a high-strength cable for medium-voltage power of 35KV and below, an inner protective sleeve 1 is integrally of a round tube type, a rubber base layer 11 and a rubber contact layer 13 inside the inner protective sleeve 1 are both made of rubber tubes, and a resin layer 12 inside the inner protective sleeve 1 is made of phenolic resin; the vinyl layer 14 in the inner protective sleeve 1 is a circular pipeline made of polyvinyl acetal, so that the outer side of the cable can be completely wrapped, the cable can not be broken, the cable leaks electricity and the like through the multi-section insulating material of the cable, and the situation that the cable protective layer is broken down due to overlarge current is prevented; the steel strip armoring 2 improves the mechanical strength and the anti-erosion capability of the utility model; the wear-resistant layer 32 inside the outer sheath 3 is made of rubber tubes with grooves on the surfaces, the compression-resistant reinforcing ribs 33 and the tensile reinforcing ribs 34 inside the outer sheath 3 are made of steel wires, and the compression-resistant reinforcing ribs 33 inside the outer sheath 3 are spiral, so that the outermost layer of the utility model can form a protective layer, has the functions of compression resistance, tensile resistance and friction resistance, and greatly improves the strength of the utility model; the inner structures of the outer shielding layer 5 and the inner shielding layer 6 are completely consistent, two groups of shielding structures are formed between the outer shielding layer 5 and the inner shielding layer 6 in one inner part and one outer part, and the outer shielding layer 5 and the inner shielding layer 6 integrally adopt rubber pipes; copper metal woven meshes are injected into the outer shielding layer 5 and the inner shielding layer 6, so that two groups of shielding layers are formed outside the metal conductor 7, and the electromagnetic induction caused by too close contact of cables is prevented from influencing other peripheral equipment; the metal conductor 7 is used for conducting current.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. A high-strength cable for medium-voltage power of 35KV and below is characterized in that: including inner protective sheath (1), steel band armor (2), outside sheath (3), insulating cover (4), outer shielding layer (5), inner shield layer (6), metallic conductor (7) and packing (8), wherein: the steel-tape armor (2) is adhered to the inner wall of the inner protective sleeve (1), the outer protective sleeve (3) is adhered to the outer surface of the inner protective sleeve (1), and the insulating sleeve (4) is embedded in the steel-tape armor (2); the outer shielding layer (5) is adhered to the outer surface of the insulating sleeve (4), the inner shielding layer (6) is adhered to the inner surface of the insulating sleeve (4), and the metal conductor (7) is embedded in the inner shielding layer (6); the filler (8) is filled in the gap between the steel tape armor (2) and the outer shielding layer (5).

2. A high strength cable for medium voltage power of 35KV and below according to claim 1, wherein: the inner protective sleeve (1) comprises a rubber base layer (11), a resin layer (12), a rubber contact layer (13) and a vinyl layer (14), wherein the resin layer (12) is bonded inside the rubber base layer (11), and the rubber contact layer (13) is bonded inside the resin layer (12); the vinyl layer (14) is bonded to the outer side of the rubber base layer (11).

3. A high strength cable for medium voltage power of 35KV and below according to claim 1, wherein: the outer sheath (3) comprises a main body supporting body (31), a wear-resistant layer (32), compression-resistant reinforcing ribs (33) and tensile reinforcing ribs (34), the wear-resistant layer (32) is bonded on the outer surface of the main body supporting body (31), and the compression-resistant reinforcing ribs (33) and the tensile reinforcing ribs (34) are welded; the compression-resistant reinforcing ribs (33) and the tensile reinforcing ribs (34) are embedded in the main body supporting body (31).

4. A high strength cable for medium voltage power of 35KV and below according to claim 1, wherein: the inner protective sleeve (1) is integrally in a circular tube shape, the rubber base layer (11) and the rubber contact layer (13) inside the inner protective sleeve (1) are both made of rubber tubes, and the resin layer (12) inside the inner protective sleeve (1) is made of phenolic resin; the vinyl layer (14) in the inner protective sleeve (1) adopts a circular pipeline made of polyvinyl acetal.

5. A high strength cable for medium voltage power of 35KV and below according to claim 1, wherein: the wear-resistant layer (32) in the outer side sheath (3) is a rubber pipe with a groove on the surface, the compression-resistant reinforcing ribs (33) and the tensile reinforcing ribs (34) in the outer side sheath (3) are made of steel wires, and the compression-resistant reinforcing ribs (33) in the outer side sheath (3) are spiral.

6. A high strength cable for medium voltage power of 35KV and below according to claim 1, characterized in that: the structure of the inner part of the outer shielding layer (5) is completely consistent with that of the inner shielding layer (6), two groups of shielding structures are formed between the outer shielding layer (5) and the inner shielding layer (6) in one inner part and one outer part, and the outer shielding layer (5) and the inner shielding layer (6) are integrally made of rubber tubes; and copper metal woven meshes are injected into the outer shielding layer (5) and the inner shielding layer (6).