CN210041301U - Three-core cold-shrinkable cable joint - Google Patents

Abstract

The utility model discloses a three-core cold-contraction cable joint, which comprises an outer armor belt and two cables, wherein two ends of the outer armor belt are respectively fixedly sleeved at one ends of the two cables, one ends of the two cables are respectively fixedly provided with two first constant force springs, one end of each first constant force spring is fixedly connected with one end of each second constant force spring through three copper shielding pipes, one ends of the two cables are respectively and fixedly sleeved with two first insulating sleeves, two sides of the outer wall of the two first insulating sleeves are respectively and fixedly connected with two ends inside the outer armor belt through two first elastic nets, and the inside of the two first elastic nets is filled with first water-absorbing resin, and then the waterproof capability of the cold-shrink cable joint can be improved.

Description

Three-core cold-shrinkable cable joint

Technical Field

The utility model relates to a cable joint, in particular to three-core shrinkage cable joint.

Background

In the process of high-voltage long-distance transmission, current transmission is completed through cables, the cables are often limited in length, in order to enable the current transmission to reach a long distance, a plurality of cables must be connected, direct connection is not feasible, a connecting shield body is required in the middle to shield the cables, and the connecting body is an intermediate connector.

At present, a plurality of cable intermediate connectors often run in wet places such as tunnels and the underground, and moisture easily enters, so that short circuit of the connectors is caused, huge loss is brought to users, the existing cold-shrink cable connectors are poor in water resistance, and short circuit is easily caused when the wet places are used for a long time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three-core shrinkage cable joint to solve the current poor problem of waterproof ability of shrinkage cable joint that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a three-core shrinkage cable joint, includes outer armor area and two cables, the one end at two cables is established to the both ends of outer armor area fixed cover respectively, two the one end of cable is fixed respectively and is equipped with two first constant force springs, every the one end of first constant force spring all is through the one end fixed connection of three copper shield pipe and three second constant force spring, six the other end of second constant force spring respectively with the both ends fixed connection of three parallelly connected shrinkage intervalve, two the fixed cover of one end of cable is equipped with two first insulation sleeve pipes respectively, two the both sides of first insulation sleeve pipe outer wall all through two first elastic net respectively with the inside both ends fixed connection in outer armor area, two the inside of first elastic net all is filled with first water-absorbing resin.

As a preferred technical scheme of the utility model, every the inside both ends of shrinkage intermediate tube are all fixed and are equipped with two cable insulation shields, two cable insulation shield's one end difference two cable insulation of fixedly connected with, two cable insulation's one end all is provided with stress cone, two cable insulation's the other end passes through electrically conductive connection metal fixed connection, electrically conductive connection metal's external fixation cover is equipped with high-voltage shielding pipe.

As an optimal technical scheme of the utility model, two fixed cover respectively is equipped with two second insulation support, two on the cable insulation shields the outer wall of second insulation support all through second elasticity net respectively with the inside both ends fixed connection of shrinkage intertube, two it has the second resin that absorbs water to fill between the inside both ends of second elasticity net and shrinkage intertube.

As an optimized technical scheme of the utility model, the internal diameter of copper shield pipe matches with the inner core of cable.

As an optimal technical scheme of the utility model, it is three the outside cladding of pipe in the middle of the shrinkage has waterproof sticky tape.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a three-core shrinkage cable joint, when outer armor takes place to leak, the water and the contact of first water-absorbing resin, can absorb the water through first water-absorbing resin, the position of leaking can be stopped up in the inflation of first water-absorbing resin simultaneously, then can improve the waterproof ability of shrinkage cable joint, after first water-absorbing resin became invalid, still can play waterproof purpose through second water-absorbing resin, with first water-absorbing resin in coordination protection shrinkage intermediate head, extension shrinkage cable joint is in the life in humid place.

Drawings

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

fig. 2 is a schematic sectional structure of the present invention;

fig. 3 is a schematic view of the cross-sectional structure of the cold-shrinking intermediate pipe of the present invention.

In the figure: 1. an outer armor band; 2. a cable; 3. a first constant force spring; 4. a copper shield tube; 5. a second constant force spring; 6. a cold-shrink intermediate tube; 7. cable insulation shielding; 8. insulating the cable; 9. a stress cone; 10. a conductive connection metal; 11. a high voltage shielding tube; 12. a first insulating sleeve; 13. a first elastic web; 14. a first water-absorbent resin; 15. a second insulating sleeve; 16. a second elastic web; 17. a second water-absorbent resin.

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

Please refer to fig. 1-3, the utility model provides a three-core shrinkage cable joint, including outer armor area 1 and two cables 2, the both ends of outer armor area 1 are fixed the cover respectively and are established in the one end of two cables 2, the one end of two cables 2 is fixed respectively and is equipped with two first constant force springs 3, the one end of every first constant force spring 3 is all through the one end fixed connection of three copper shielded tube 4 and three second constant force spring 5, the other end of six second constant force springs 5 respectively with the both ends fixed connection of three parallelly connected shrinkage intermediate tube 6, the fixed cover is equipped with two first insulation sleeve 12 respectively to the one end of two cables 2, the both sides of two first insulation sleeve 12 outer walls all through two first elastic net 13 respectively with the inside both ends fixed connection of outer armor area 1, the inside of two first elastic net 13 all is filled with first water-absorbing resin 14.

Preferably, the two ends of the inside of each cold-shrink intermediate pipe 6 are fixedly provided with two cable insulation shields 7, one ends of the two cable insulation shields 7 are fixedly connected with two cable insulations 8 respectively, one ends of the two cable insulations 8 are provided with stress cones 9, the other ends of the two cable insulations 8 are fixedly connected through conductive connecting metals 10, the external fixing sleeve of the conductive connecting metals 10 is provided with a high-voltage shielding pipe 11, and the three-core parallel connection of the cable 2 can be realized through the three cold-shrink intermediate pipes 6.

Preferably, two cable insulation shields 7 are respectively fixedly sleeved with two second insulation sleeves 15, the outer walls of the two second insulation sleeves 15 are respectively fixedly connected with the two ends of the interior of the cold-shrink intermediate pipe 6 through second elastic nets 16, second water-absorbing resin 17 is filled between the two ends of the interior of the cold-shrink intermediate pipe 6 and the two second elastic nets 16, and the water body is prevented from entering the interior of the cold-shrink intermediate pipe 6 through the second water-absorbing resin 17.

Preferably, the inner diameter of the copper shield tube 4 matches the inner core of the cable 2, ensuring that the cold-shrink intermediate fitting is suitable for the inner core of the cable 2.

Preferably, the three cold-shrink intermediate tubes 6 are externally wrapped with waterproof tapes, by which the waterproof capability can be further improved.

When the three-core cold-shrinkable cable joint is used in detail, firstly, the three cores of two cables 2 are connected through three cold-shrinkable intermediate pipes 6, when the cold-shrinkable cable joint is placed in a humid place, when leakage occurs between the outer armor belt 1 and the cables 2, and water enters the inner part of the outer armor belt 1, the water firstly contacts with the first water-absorbent resin 14 at the two ends of the inner part of the outer armor belt 1, the water can be absorbed through the first water-absorbent resin 14, the water is placed to enter the inner part of the cold-shrinkable intermediate pipe 6 to cause short circuit, meanwhile, the first water-absorbent resin 14 absorbs water and expands, the leakage part between the outer armor belt 1 and the cables 2 can be blocked, then, the waterproof capacity of the cold-shrinkable cable joint can be improved, after the first water-absorbent resin 14 fails, the purpose of secondary waterproof through the waterproof adhesive tape can be achieved, after the waterproof adhesive tape fails, when the water enters the inner part of, the second that fills with the inside both ends of cold-shrink intermediate pipe 6 earlier absorbs water resin 17 and contacts, and second absorbs water resin 17 absorbs the water, can plug up the leakage position after the collision simultaneously, still can play waterproof purpose through second absorb water resin 17 then, protects cold-shrink intermediate head in coordination with first absorb water resin 14, prolongs the life of cold-shrink cable joint in moist place.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The three-core cold-shrinkable cable joint comprises an outer armor belt (1) and two cables (2), and is characterized in that two ends of the outer armor belt (1) are respectively fixedly sleeved at one ends of the two cables (2), two ends of the cables (2) are respectively fixedly provided with two first constant force springs (3), one end of each first constant force spring (3) is fixedly connected with one end of each second constant force spring (5) through three copper shielding pipes (4), the other end of each second constant force spring (5) is respectively fixedly connected with two ends of three cold-shrinkable intermediate pipes (6) connected in parallel, one end of each cable (2) is respectively fixedly sleeved with two first insulating sleeves (12), two sides of the outer wall of each first insulating sleeve (12) are respectively fixedly connected with two inner ends of the outer armor belt (1) through two first elastic nets (13), the interiors of the two first elastic nets (13) are filled with first water-absorbing resin (14).

2. A three-core cold-shrink cable joint as set forth in claim 1, wherein: every the inside both ends of pipe (6) are all fixed in the middle of the shrinkage are equipped with two cable insulation shield (7), two the one end difference two cable insulation of fixedly connected with (8), two of cable insulation shield (7) the one end of cable insulation (8) all is provided with stress cone (9), two the other end of cable insulation (8) passes through electrically conductive connecting metal (10) fixed connection, the external fixation cover of electrically conductive connecting metal (10) is equipped with high-voltage shielding pipe (11).

3. A three-core cold-shrink cable joint as set forth in claim 2, wherein: two fixed cover is equipped with two second insulation support (15), two respectively on cable insulation shield (7) the outer wall of second insulation support (15) all through second elasticity net (16) respectively with the inside both ends fixed connection of pipe (6) in the middle of the shrinkage, two it has second water-absorbent resin (17) to fill between the inside both ends of pipe (6) in the middle of second elasticity net (16) and the shrinkage.

4. A three-core cold-shrink cable joint as set forth in claim 1, wherein: the inner diameter of the copper shielding pipe (4) is matched with the inner core of the cable (2).

5. A three-core cold-shrink cable joint as set forth in claim 1, wherein: the three cold-shrinkage intermediate pipes (6) are coated with waterproof adhesive tapes.

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