CN214429227U

CN214429227U - 35kV cold-contraction outdoor cable terminal

Info

Publication number: CN214429227U
Application number: CN202120850527.9U
Authority: CN
Inventors: 钟华
Original assignee: Kema Zhejiang Power Technology Co ltd
Current assignee: Kema Zhejiang Power Technology Co ltd
Priority date: 2021-04-24
Filing date: 2021-04-24
Publication date: 2021-10-19
Anticipated expiration: 2031-04-24

Abstract

The utility model discloses a 35kV shrinkage outdoor cable terminal, the cover is equipped with the full skirt on the cable, and the full skirt upper end is connected with the shrinkage sealed tube, is equipped with cable core in the cable, and binding post and full skirt intermediate junction have the sleeve pipe, the sleeve pipe comprises inner tube, seal cover, adapter sleeve and overcoat, the direct cover of inner tube is established in the outside of cable core, the upper end outside of cable core is around having joint strip, the utility model discloses utilize the sheathed tube to be in the same place binding post and cable core's end connection, the trouble of the winding sticky tape of repetition of avoiding, through threaded connection, the junction leakproofness is good, has effectively avoided the problem that there is water infiltration after the shrinkage sealed tube tip splits.

Description

35kV cold-contraction outdoor cable terminal

Technical Field

The utility model relates to a power equipment technical field specifically is a 35kV shrinkage outdoor cable terminal.

Background

The cold-shrink cable terminal is made up of elastomer through injection sulfurization in factory, diameter expansion and plastic spiral supporter. When the cable is installed on site, the pre-expansion pieces are sleeved at the tail end or joint of the treated cable, the plastic spiral strip (support) supported inside is drawn out, and the plastic spiral strip is pressed on the cable insulation to form the cable accessory. It is commonly referred to as a cold shrinkable cable accessory because it shrinks under elastic retractive force at room temperature, rather than heat with fire as a heat shrinkable cable accessory.

35 outdoor cable termination of kilovolt formula that contracts is the cable termination in the electric power transmission of national grid, is indispensable part among the electric power system, and current cable termination needs to use a large amount of sticky tapes connection port when connecting to can produce the terminal fracture after the shrinkage sealing tube time is long, the life-span reduces, and electrical property and mechanical strength are low. Therefore, the utility model provides a 35kV shrinkage outdoor cable terminal to solve the problem that proposes in the above-mentioned background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 35kV shrinkage outdoor cable terminal to solve the problem that proposes 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 35kV shrinkage outdoor cable terminal, the cover is equipped with the full skirt on the cable, and the full skirt upper end is connected with the shrinkage sealed tube, is equipped with cable core in the cable, and binding post and full skirt intermediate junction have a sleeve pipe, the sleeve pipe comprises inner tube, seal cover, adapter sleeve and overcoat, the direct cover of inner tube is established in cable core's the outside, cable core's the upper end outside is around having joint strip, and joint strip's outside winding has insulating self-adhesive tape, and the outside of insulating self-adhesive tape is equipped with the packing and glues for fill intraductal clearance in the packing.

The lower part of inner tube is the tapered, and the upper end of shrinkage sealing tube cup joints the lower part at the inner tube, and there is the seal cover upper portion of inner tube through threaded connection, and the first half of adapter sleeve is equipped with the sealing strip, and there is the overcoat first half outside of adapter sleeve through threaded connection, through rotating the overcoat for compress the sealing strip, make the upper end seal, accomplish end connection's seal installation.

As a further proposal, the lower part upside of the inner tube is provided with an accumulation groove, and the sealing sleeve is provided with an outward groove corresponding to the accumulation groove for storing the redundant cold-contraction sealing tube.

As a further proposal of the utility model, the lower part of the sealing sleeve is conical, and the conical part is made of elastic material.

As the utility model discloses scheme further again, the upper portion of seal cover is a plurality of protruding strip constitutions, and there is the adapter sleeve in the outside of protruding strip through threaded connection.

As the utility model discloses scheme further again, the sealing strip is along being the circumference distribution outside the upper end of adapter sleeve, and sealing strip cross section from the top down crescent, is equipped with the elastic block that misplaces each other between the sealing strip for the junction is inseparabler.

As the utility model discloses scheme further still, the upper end inboard of overcoat is equipped with the annular groove, and the joint has the sealing washer in the annular groove, and the overcoat inlays at the upper end of annular groove and is equipped with the rubber circle that absorbs water, improves the leakproofness of tip.

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

the utility model discloses utilize the sleeve pipe of complete set to be in the same place binding post and cable core's end connection, the trouble of the winding sticky tape repeatedly of avoiding, through threaded connection, the junction leakproofness is good, has the problem of water infiltration after effectively having avoided shrinkage sealed tube tip fracture.

Drawings

Fig. 1 is a schematic structural diagram of a 35kV cold-shrink outdoor cable terminal.

Fig. 2 is a schematic structural diagram of a sleeve in a 35kV cold-shrink outdoor cable terminal.

FIG. 3 is a schematic structural diagram of an inner tube in a 35kV cold-shrink outdoor cable terminal.

Fig. 4 is a schematic structural diagram of a connecting sleeve in a 35kV cold-shrink outdoor cable terminal.

In the figure: 1. a wiring terminal; 2. a cable; 21. a cable core; 3. an umbrella skirt; 4. a sleeve; 41. an inner tube; 42. sealing sleeves; 43. connecting sleeves; 44. a jacket; 5. a stacking tank; 6. a sealing strip; 7. a seal ring; 8. a water-absorbing rubber ring; 9. sealing rubber strips; 10. an insulating self-adhesive tape; 11. and filling glue.

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.

Example one

Referring to fig. 1-3, in the embodiment of the present invention, a 35kV cold-shrinkage outdoor cable terminal includes a cable 2 and a connection terminal 1, wherein the cable 2 is sleeved with an umbrella skirt 3, the upper end of the umbrella skirt 3 is connected with a cold-shrinkage sealing tube, a cable core 21 is arranged in the cable 2, and a sleeve 4 is connected between the connection terminal 1 and the umbrella skirt 3;

the sleeve 4 comprises an inner tube 41, a sealing sleeve 42, a connecting sleeve 43 and an outer sleeve 44, the inner tube 41 is directly sleeved on the outer side of the cable core 21, a sealing rubber strip 9 is wound on the outer side of the upper end of the cable core 21, an insulating self-adhesive tape 10 is wound on the outer side of the sealing rubber strip 9, and filling rubber 11 is arranged on the outer side of the insulating self-adhesive tape 10 and used for filling gaps in the inner tube 41.

The lower part of the inner tube 41 is conical, the upper end of the cold-shrink sealing tube is sleeved on the lower part of the inner tube 41, the upper side of the lower part of the inner tube 41 is provided with a stacking groove 5, the sealing sleeve 42 is provided with an outward groove corresponding to the stacking groove 5 and used for storing redundant cold-shrink sealing tubes, the upper part of the inner tube 41 is connected with the sealing sleeve 42 through threads, the lower part of the sealing sleeve 42 is conical, and the conical part is made of elastic materials;

the upper portion of seal cover 42 is a plurality of protruding strips and constitutes, and there is adapter sleeve 43 in the outside of protruding strip through threaded connection, and the first half of adapter sleeve 43 is equipped with sealing strip 6, and there is overcoat 44 in the first half outside of adapter sleeve 43 through threaded connection, the upper end inboard of overcoat 44 is equipped with the annular groove, and the joint has sealing washer 7 in the annular groove, and overcoat 44 inlays at the upper end of annular groove and is equipped with water-absorbing rubber circle 8, improves the leakproofness of tip, through rotating overcoat 44 for compression sealing strip 6 makes the upper end seal, accomplishes end joint's seal installation.

Example two

Referring to fig. 4, the embodiment of the present invention is different from the first embodiment in that the sealing strips 6 are circumferentially distributed along the outer edge of the upper end of the connecting sleeve 43, the cross section of the sealing strips 6 is gradually increased from top to bottom, and the elastic blocks which are staggered with each other are disposed between the sealing strips 6, so that the connection is tighter.

The utility model discloses a theory of operation is: when the umbrella is used, the umbrella skirt 3 is installed firstly, the sealing sleeve 42 is sleeved, then the cold-shrink sealing tube is connected, before the upper end part of the cold-shrink sealing tube is pulled out, the sealing rubber strip 9, the insulating self-adhesive tape 10 and the filling rubber 11 are sequentially wound and wound at the end part of the cold-shrink sealing tube, the inner tube 41 is sleeved again, and the support of the cold-shrink sealing tube is pulled out, so that the end part of the cold-shrink sealing tube is sleeved at the accumulation groove 5 of the inner tube 41.

Upwards stimulate seal cover 42 for the protrusion strip pastes on cable core 21, and the rethread screw thread is with adapter sleeve 43, fixes adapter sleeve 43, cup joints overcoat 44 again on binding post 1, connects binding post 1 with cable core 21, rotates overcoat 44, connects through sealing strip 6, and sealing washer 7 seals, and water-absorbing rubber circle 8 further reduces the gap after absorbing water.

The utility model discloses utilize the sheathed tube 4 of complete set to be in the same place binding post 1 and cable core 21's end connection, the trouble of the winding sticky tape repeatedly of avoiding, through threaded connection, the junction leakproofness is good, has the problem of water infiltration after effectively having avoided shrinkage sealed tube tip fracture.

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 can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. A35 kV cold-shrinkage outdoor cable terminal comprises a cable (2) and a wiring terminal (1), and is characterized in that an umbrella skirt (3) is sleeved on the cable (2), the upper end of the umbrella skirt (3) is connected with a cold-shrinkage sealing tube, a cable core (21) is arranged in the cable (2), and a sleeve (4) is connected between the wiring terminal (1) and the umbrella skirt (3);

the sleeve (4) is composed of an inner pipe (41), a sealing sleeve (42), a connecting sleeve (43) and an outer sleeve (44), the inner pipe (41) is directly sleeved on the outer side of the cable core (21), a sealing rubber strip (9) is wound on the outer side of the upper end of the cable core (21), an insulating self-adhesive tape (10) is wound on the outer side of the sealing rubber strip (9), and filling rubber (11) is arranged on the outer side of the insulating self-adhesive tape (10);

the lower part of inner tube (41) is the tapered, and the upper end of cold-shrink sealed tube cup joints the lower part at inner tube (41), and there is seal cover (42) upper portion of inner tube (41) through threaded connection, and the first half of adapter sleeve (43) is equipped with sealing strip (6), and there is overcoat (44) in the first half outside of adapter sleeve (43) through threaded connection.

2. The 35kV cold-shrink outdoor cable terminal as claimed in claim 1, wherein the lower upper side of the inner tube (41) is provided with a stacking groove (5), and the sealing sleeve (42) is provided with an outward groove corresponding to the stacking groove (5).

3. A 35kV cold-shrink outdoor cable termination according to claim 1, wherein the lower portion of the sealing sleeve (42) is cone-shaped.

4. The 35kV cold-shrink outdoor cable terminal as claimed in claim 1, wherein the upper part of the sealing sleeve (42) is composed of a plurality of protruding strips, and the outer sides of the protruding strips are connected with connecting sleeves (43) through threads.

5. The 35kV cold-shrink outdoor cable terminal as claimed in claim 1, wherein the sealing strips (6) are circumferentially distributed along the outer edge of the upper end of the connecting sleeve (43), the cross section of each sealing strip (6) is gradually increased from top to bottom, and mutually staggered elastic blocks are arranged between the sealing strips (6).

6. The 35kV cold-shrink outdoor cable terminal as claimed in claim 1, wherein the inner side of the upper end of the outer sleeve (44) is provided with an annular groove, a sealing ring (7) is clamped in the annular groove, and the outer sleeve (44) is embedded with a water-absorbing rubber ring (8) at the upper end of the annular groove.