CN212231067U

CN212231067U - Cable joint dampproof device

Info

Publication number: CN212231067U
Application number: CN202021348372.0U
Authority: CN
Inventors: 郑华丰
Original assignee: Zhejiang Daster Cable Accessories Co ltd
Current assignee: Zhejiang Daster Cable Accessories Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-12-25
Anticipated expiration: 2030-07-10

Abstract

The utility model discloses a cable joint dampproof device, including cable conductor and outsourcing insulating protective layer, outsourcing insulating protective layer surface cover is equipped with the lantern ring, be equipped with first shell and second shell on the lantern ring, first shell with second shell one side is rotated through the pivot and is connected, and the opposite side passes through bolted connection, first shell with second shell fixedly connected with spring respectively, the first inner shell of spring difference fixedly connected with and second inner shell, first inner shell with the internal surface of second inner shell all with cable conductor's surface butt. The utility model discloses in, because the waterproof characteristic of high strength plastics dampproof course has realized when extreme weather difference in temperature is great, whole device still and cable between keep in close contact with, owing to be provided with first inner shell and second inner shell, keep apart the steam that can get into with the electric field, avoided forming the water tree and caused the cable insulation ageing.

Description

Cable joint dampproof device

Technical Field

The utility model relates to a cable conductor protective apparatus technical field especially relates to a cable joint dampproof device.

Background

The production and use of crosslinked polyethylene cable conductors have been in history for decades, and such cable conductors, which are made of non-polar materials, have good insulating properties, withstand the impact of overload and large short circuit capacity, have many advantages, and are now widely used.

At present, when the power cable lead joint is connected and constructed, two sections of cable leads are all provided with prefabricated cold-shrinkage type intermediate joints. Moisture can form water drops between the electrical insulation and the intermediate joint preform insulation during cable conductor operation, and when water drops accumulate to a certain amount, water trees can form. Under the action of an electric field, the water tree aging phenomenon of the cable wire can occur, and finally, the insulation is broken down. Such hazards are covert and not easily discovered and are generally not appreciated by people. The harm greatly reduces the service life and safety of the cable and the wire, and brings huge economic loss and social negative effects caused by power failure. If the cable conductor is affected with water and damp to cause the breakdown accident of the cable conductor, the large-area long-time power failure is directly caused, and the power supply reliability is reduced, so that serious negative effects are brought to industrial and agricultural production and residential life power utilization.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems, a cable joint moisture-proof device is provided.

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

the utility model provides a cable joint dampproof device, includes cable conductor and outsourcing insulating protective layer, outsourcing insulating protective layer surface cover is equipped with the lantern ring, be equipped with first shell and second shell on the lantern ring, first shell with second shell one side is rotated through the pivot and is connected, and the opposite side passes through bolted connection, first shell with second shell fixedly connected with spring respectively, the first inner shell of spring difference fixedly connected with and second inner shell, first inner shell with the internal surface of second inner shell all with cable conductor's surface butt.

As a further description of the above technical solution:

the first shell with all be equipped with high strength plastics dampproof course on the contact surface of second shell and the arcwall face that is close to each other, first inner shell with all be equipped with high strength plastics dampproof course on the contact surface of second inner shell and the arcwall face that is close to each other.

As a further description of the above technical solution:

the high-strength plastic moisture-proof layer is a polyvinyl chloride film.

As a further description of the above technical solution:

the wrapping layer of the strength plastic moisture-proof layer is not less than four layers.

As a further description of the above technical solution:

the springs are arranged in a central symmetry mode about the cable conductor, and the number of the springs is not less than eight.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, because the waterproof characteristic of high strength plastics dampproof course has realized when extreme weather difference in temperature is great, whole device still and cable between keep in close contact with, stopped the entering of moisture, stopped cable joint insulating degree and descended because of weing to avoided the emergence of the cable insulation breakdown condition, prevented that the cable joint trouble from taking place, guaranteed the normal safe work of cable.

2. The utility model discloses in, owing to be provided with first inner shell and second inner shell, keep apart the steam that can get into and electric field, avoided forming the water tree, cause the cable insulation ageing, improve the reliability of electric wire netting operation, extension cable life has objective social economic benefits.

Drawings

Fig. 1 shows a cross-sectional view of an overall structure provided in accordance with an embodiment of the present invention;

fig. 2 shows a side view of a portion of a structure provided in accordance with an embodiment of the present invention.

Illustration of the drawings:

1. a cable conductor; 2. an insulating protective layer is coated outside; 3. a collar; 4. a first housing; 5. a spring; 6. a second housing; 7. a rotating shaft; 8. a first inner case; 9. a second inner case; 10. high strength plastics dampproof course.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a cable joint dampproof device, including cable conductor 1 and outsourcing insulating protective layer 2, the 2 surface cover of outsourcing insulating protective layer is equipped with lantern ring 3, be equipped with first shell 4 and second shell 6 on the lantern ring 3, first shell 4 and second shell 6 one side are rotated through pivot 7 and are connected, bolted connection is passed through to the opposite side, first shell 4 and second shell 6 are fixedly connected with spring 5 respectively, spring 5 is the first inner shell 8 of fixedly connected with and second inner shell 9 respectively, the internal surface of first inner shell 8 and second inner shell 9 all with cable conductor 1's surface butt, be provided with first inner shell 8 and second inner shell 9, steam and electric field isolation that can get into, formation water tree has been avoided, cause the cable insulation ageing, the reliability of improvement electric wire netting operation, extension cable life, there is objective social economic benefits.

Specifically, as shown in fig. 1 and fig. 2, all be equipped with high strength plastics dampproof course 10 on the contact surface of first shell 4 and second shell 6 and the arcwall face that is close to each other, all be equipped with high strength plastics dampproof course 10 on the contact surface of first inner shell 8 and second inner shell 9 and the arcwall face that is close to each other, high strength plastics dampproof course 10 is the polyvinyl chloride membrane, four layers are no less than to high strength plastics dampproof course 10 parcel layer, because the waterproof characteristic of high strength plastics dampproof course 10, realized when extreme weather difference in temperature is great, whole device still and keep in close contact with between the cable, the entering of moisture has been stopped, cable joint insulating degree has been stopped and has been descended because of weing, thereby the emergence of the cable insulation breakdown condition has been avoided, prevent cable joint trouble from taking place, guarantee the work of cable normal safety.

Specifically, as shown in fig. 1 and 2, the springs 5 are arranged in a central symmetry manner with respect to the cable conductor 1, and the number of the springs is not less than eight, the arrangement of the springs 5 enables the first inner shell 8 and the second inner shell 9 to be in closer contact with the cable conductor 1, the symmetrical arrangement enables the first inner shell 8 and the second inner shell 9 to be stressed uniformly, and the structure is firmer.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a cable joint dampproof device, includes cable conductor (1) and outsourcing insulating protective layer (2), its characterized in that, outsourcing insulating protective layer (2) surface cover is equipped with lantern ring (3), be equipped with first shell (4) and second shell (6) on lantern ring (3), first shell (4) with second shell (6) one side is rotated through pivot (7) and is connected, and the opposite side passes through bolted connection, first shell (4) with second shell (6) fixedly connected with spring (5) respectively, spring (5) is first inner shell (8) of fixedly connected with and second inner shell (9) respectively, first inner shell (8) with the internal surface of second inner shell (9) all with the surface butt of cable conductor (1).

2. A cable joint moisture protection device according to claim 1, wherein the contact surfaces of the first outer shell (4) and the second outer shell (6) and the arc surfaces close to each other are provided with high-strength plastic moisture protection layers (10), and the contact surfaces of the first inner shell (8) and the second inner shell (9) and the arc surfaces close to each other are provided with high-strength plastic moisture protection layers (10).

3. A cable splice moisture barrier as defined in claim 2 in which said high strength plastic moisture barrier (10) is a polyvinyl chloride film.

4. A cable splice moisture barrier as claimed in claim 2 wherein said high strength plastic moisture barrier (10) is wrapped in no less than four layers.

5. A cable splice moisture barrier as claimed in claim 1 wherein said springs (5) are arranged symmetrically about the centre of said cable conductor (1) and are not less than eight in number.