CN216904259U

CN216904259U - 10KV cold-shrink cable intermediate joint

Info

Publication number: CN216904259U
Application number: CN202123173675.0U
Authority: CN
Inventors: 龚卫兵
Original assignee: Wuhan Arp Intelligent Electric Co ltd
Current assignee: Wuhan Arp Intelligent Electric Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-07-05
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a 10KV cold-shrinkable cable intermediate joint in the technical field of cable joints, wherein a connecting pipe is arranged inside a joint body, two sides inside the connecting pipe are inserted into the end part of the cable body, an insulating layer, an inner shielding layer, a fireproof layer, a waterproof layer, an outer shielding layer and a corrosion-resistant layer are sequentially arranged inside the joint body, a cable core is welded, and the surface is armored. The utility model has the advantages of no aging phenomenon after long-time use, good waterproof and fireproof performance, thereby prolonging the service life and being beneficial to the use of people.

Description

10KV cold-shrink cable intermediate joint

Technical Field

The utility model relates to the technical field of cable connectors, in particular to a 10KV cold-shrink cable intermediate connector.

Background

The intermediate joint is generally a cable intermediate joint, i.e., a cable joint at the middle part of a cable line, and is a cable accessory used for intermediate connection of cross-linked cables or oil-immersed cables of various voltage grades, and mainly functions to make the line smooth, keep the cables sealed, and ensure the insulation grade at the cable joint, so that the cable joint can operate safely and reliably.

At present, the existing cable intermediate joint is easy to have an aging phenomenon after being used for a long time, and has poor waterproof, fireproof, insulating and tensile properties, so that the service life is shortened, and the use of people is not facilitated, therefore, the technical personnel in the field provide the 10KV cold-shrinkable cable intermediate joint to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a 10KV cold-shrink cable intermediate joint to solve the problems in the background technology.

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

10KV shrinkage cable intermediate head, including the joint body, its characterized in that: the cable connector is characterized in that a connecting pipe is arranged inside the connector body, the middle part in the connecting pipe is the end parts of the cable bodies on two sides, and the connector body is sequentially provided with an insulating layer, an inner shielding layer, a fireproof layer, a waterproof layer, an outer shielding layer, an anti-corrosion layer and an armor layer from an inner layer to an outer layer.

Preferably, the armor layer is arranged in the range of 30-80cm from the center to two sides of the connector body, and the armor layer is bound at intervals by metal ties.

Preferably, the cable body is internally provided with a copper shielding layer, an outer semi-conducting layer and a core body in sequence, the surface of the copper shielding layer is positioned in the connecting pipe, the connecting part of the core body is connected into a whole through a melting technology, and two ends of the connecting pipe are connected with the contact part of the copper shielding layer in an annular embedding manner.

In an embodiment, the insulating layer is made of an elastic material, and the elastic material is silicone rubber and ethylene propylene rubber.

As an embodiment, a heat insulation layer and a flame-retardant filling layer are arranged inside the fire-proof layer, and the thickness of the flame-retardant filling layer is 0.6-0.9 mm.

In an embodiment, a heat insulating layer is disposed on a surface of the outer shielding layer, and the heat insulating layer is ethylene propylene diene monomer.

As an example, the corrosion-resistant layer is internally provided with a polyethylene layer, and the thickness of the polyethylene layer is 0.3-0.5 mm.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the core body can be fixed by arranging the connecting pipe, the insulating layer, the fireproof layer, the waterproof layer and the corrosion-resistant layer can reach or improve the grade of insulation, fire prevention, water prevention and corrosion resistance, and the inner shielding layer and the outer shielding layer can achieve the shielding effect, so that the cable intermediate joint cannot age after being used for a long time, and the waterproof and fireproof performances are good, thereby prolonging the service life and being beneficial to the use of people.

2. When the cable body is placed in the connector body, the cable body is limited through the slotted hole, the copper shielding layer, the outer semi-conducting layer and the core body are stripped by the two cable bodies according to a certain size, then the core body is inserted into the connecting pipe to be fixed, the heat insulation and flame retardant effects can be achieved by arranging the flame retardant filling layer, the core body is connected in a melting mode under the condition, and in order to improve the tensile strength, the armor and the ribbon are arranged outside. The two ends of the connecting pipe are connected with the copper shielding layer in an annular nested manner, so that the tensile strength can be improved, and the semiconductor layer can be protected.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of a structural joint body of the present invention;

FIG. 3 is a schematic cross-sectional view of a structural fire barrier layer of the present invention;

FIG. 4 is a schematic cross-sectional view of the outer shield of the inventive structure;

fig. 5 is a schematic cross-sectional view of a structural corrosion-resistant layer of the present invention.

In the figure: 1. a connector body; 2. a connecting pipe; 3. a cable body; 4. an insulating layer; 5. an inner shield layer; 6. a fire barrier layer; 7. a waterproof layer; 8. an outer shield layer; 9. a corrosion-resistant layer; 10. a slot; 11. a copper shield layer; 12. an outer semiconducting layer; 13. a core body; 14. a thermal insulation layer; 15. a flame retardant filler layer; 16. a heat insulating layer; 17. a polyethylene layer; 18. an armor layer; 19. a metal cable tie.

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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, in the embodiment of the utility model, a connecting pipe 2 is arranged inside a connector body 1 of the 10KV cold-shrink cable intermediate connector, cable bodies 3 at two ends are respectively arranged at two sides inside the connecting pipe 2, and an insulating layer 4, an inner shielding layer 5, a fireproof layer 6, a waterproof layer 7, an outer shielding layer 8, an anti-corrosion layer 9 and an armor layer 18 are sequentially arranged from an inner layer to an outer layer of the connector body 1. The connector body 1 is laid on a cable connecting part and extends 25-80cm towards two sides, and all main performances of the cable are not lower than those of the connecting part. Through setting up connecting pipe 2, can fix core 13, through setting up insulating layer 4, can reach insulating effect, through setting up inner shield layer 5 and outer shielding layer 8, can reach shielded effect, can reach the effect of fire prevention through setting up flame retardant coating 6, can improve waterproof effect through setting up waterproof layer 7, can improve corrosion resistance through setting up corrosion resistant layer 9, make cable intermediate head ageing phenomenon can not appear after long-time the use, and waterproof and fire behavior is good, thereby prolong service life, and be favorable to people's use.

When the cable body 3 is put into the connector body 1, the cable body 3 is limited by the slot holes 10.

In the embodiment, the copper shield layer 11, the outer semiconductive layer 12, and the core 13 are respectively provided inside the cable body 3, and the surface of the copper shield layer 11 is located inside the connection pipe 2. A shielding layer of semi-conductive material is added on the surface of the conductor, and the shielding layer is equipotential with the shielded conductor and is in good contact with the insulating layer, so that partial discharge between the conductor and the insulating layer is avoided. The cores 13 at both ends are joined together by fusion techniques, where conditions permit. The two ends of the connecting pipe 2 are connected with the contact part of the copper shielding layer 11 in an annular embedding way. The tensile property of the conductor part can be improved, and the internal shielding protection can be realized.

In order to improve the overall strength of the connecting part, the armor layer 18 is arranged in the range of 30-80cm from the center to two sides of the joint body 1, and the armor layer 18 is bound at intervals by metal ties 19.

The copper shield layer 11, the outer semiconductive layer 12, and the core 13 are peeled off from the two cable bodies 3 by a predetermined size, and then the core 13 is inserted into and fixed to the inside of the connection pipe 2.

In this embodiment, a heat insulation layer 14 is arranged inside the fire-proof layer 6, a flame-retardant filling layer 15 is arranged inside the heat insulation layer 14, and the thickness of the flame-retardant filling layer 15 is 0.6-0.9 mm.

Through setting up fire-retardant filling layer 15, can reach thermal-insulated and fire-retardant effect.

In the present embodiment, the surface of the outer shield layer 8 is provided with a heat insulating layer 16, and the heat insulating layer 16 is ethylene propylene diene monomer.

By providing the heat insulating layer 16, a heat insulating effect can be achieved.

In this embodiment, the corrosion-resistant layer 9 is internally provided with a polyethylene layer 17, and the thickness of the polyethylene layer 17 is 0.3 to 0.5 mm.

Through setting up polyethylene layer 17, can reach acid and alkali-resistance and insulating effect.

With two cable body 3 according to certain size to copper shield layer 11, outer semi-conducting layer 12 and core 13 are peeled off, then insert core 13 inside of connecting pipe 2 and fix, then will connect 1 cover of body on cable body 3's surface, can seal fixedly to cable body 3, through setting up connecting pipe 2, can fix core 13, through setting up, insulating layer 4, can reach insulating effect, through setting up inner shield layer 5 and outer shield layer 8, can reach shielded effect, through setting up flame retardant coating 6, can reach fireproof effect, through setting up waterproof layer 7, can improve waterproof effect, through setting up corrosion resistant layer 9, can improve corrosion resistance.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1.10KV shrinkage cable intermediate head, including joint body (1), its characterized in that: the cable connector is characterized in that a connecting pipe (2) is arranged inside the connector body (1), the middle of the inside of the connecting pipe (2) is the end part of the cable bodies (3) on the two sides, and an insulating layer (4), an inner shielding layer (5), a fireproof layer (6), a waterproof layer (7), an outer shielding layer (8), a corrosion-resistant layer (9) and an armor layer (18) are sequentially arranged from the inner layer to the outer layer of the connector body (1).

2. The 10KV cold-shrink cable intermediate joint as claimed in claim 1, wherein: the armor layer (18) is arranged in the range of 30-80cm from the center to two sides of the connector body (1), and the armor layer (18) is bound at intervals by metal binding belts (19).

3. The 10KV cold-shrink cable intermediate joint as claimed in claim 1, wherein: the cable comprises a cable body (3), and is characterized in that a copper shielding layer (11), an outer semi-conducting layer (12) and a core body (13) are sequentially arranged in the cable body (3), the surface of the copper shielding layer (11) is located in a connecting pipe (2), the connecting part of the core body (13) is connected into a whole through a melting technology, and the two ends of the connecting pipe (2) are connected with the contact part of the copper shielding layer (11) in an annular embedded mode.

4. The 10KV cold-shrink cable intermediate joint as claimed in claim 1, wherein: the fireproof layer (6) is internally provided with a heat insulation layer (14) and a flame-retardant filling layer (15), and the thickness of the flame-retardant filling layer (15) is 0.6-0.9 mm.

5. The 10KV cold-shrink cable intermediate joint as claimed in claim 1, wherein: the surface of the outer shielding layer (8) is provided with a heat insulation layer (16), and the heat insulation layer (16) is ethylene propylene diene monomer.

6. The 10KV cold-shrink cable intermediate joint as claimed in claim 1, wherein: the corrosion-resistant layer (9) is internally provided with a polyethylene layer (17), and the thickness of the polyethylene layer (17) is 0.3-0.5 mm.