CN110797831A

CN110797831A - Silicon rubber cold shrinkage type cable terminal

Info

Publication number: CN110797831A
Application number: CN201910874501.5A
Authority: CN
Inventors: 王伟; 杨桂春; 杨青林; 薛成祥
Original assignee: Jiangsu Sputter Electric Technology Co Ltd
Current assignee: Jiangsu Sputter Electric Technology Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-02-14
Anticipated expiration: 2039-09-17
Also published as: CN110797831B

Abstract

The invention discloses a silicone rubber cold-shrinkable cable terminal which comprises a terminal body and a cable, wherein the cable is arranged in the terminal body in a penetrating mode, the bottom end of the terminal body is connected with a flange, the surface of the flange is provided with a central through hole corresponding to the cable, the top end of the terminal body is provided with a sealing tube, the top end of the sealing tube is provided with a wiring terminal, a prefabricated stress cone and a cold-shrinkable tube are arranged inside the terminal body, the prefabricated stress cone and the cold-shrinkable tube are sleeved on the periphery of the cable, and the cold-shrinkable tube is positioned between the prefabricated stress cone and a flange.

Description

Silicon rubber cold shrinkage type cable terminal

Technical Field

The invention relates to the technical field of cables, in particular to a silicone rubber cold-shrinkage type cable terminal.

Background

The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like. Cable terminations are devices that are assembled to the ends of a cable run to complete the connection to other electrical equipment, including outdoor terminations, indoor terminations, elbow terminations, and the like. The existing cold-shrink cable terminal has the problems of poor protective performance, easy generation of surface creepage, low safety and the like.

Disclosure of Invention

The invention aims to provide a silicone rubber cold-shrinkage type cable terminal to solve the problems in the background technology.

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

silicon rubber shrinkage formula cable termination, including terminal body and cable, the cable is worn to establish in the terminal body, the bottom of terminal body is connected with the flange, the central through-hole corresponding with the cable is seted up on the flange surface, the top of terminal body is provided with the sealed tube, binding post is installed on the sealed tube top, inside prefabricated stress awl and the shrinkage pipe of being provided with of terminal body, prefabricated stress awl and shrinkage pipe all suit are in the cable periphery, the shrinkage pipe is located between prefabricated stress awl and the flange.

Preferably, a through hole corresponding to the cable is formed in the prefabricated stress cone, the through hole is in a circular truncated cone shape with the diameter gradually reduced from bottom to top, a semi-conductive sleeve is arranged at the bottom end of the prefabricated stress cone, and the semi-conductive sleeve is sleeved on the periphery of the cable.

Preferably, the top end of the flange is provided with a convex ring, and the convex ring is sleeved on the periphery of the cable.

Preferably, the cold-shrink tube comprises a central tube, a first connecting tube and a second connecting tube, the central tube, the first connecting tube and the second connecting tube are integrally formed, the central tube is sleeved on the periphery of the cable, the first connecting tube is sleeved on the periphery of the semi-conductive sleeve, and the second connecting tube is sleeved on the periphery of the convex ring.

Preferably, the outer side wall of the cold shrinkage pipe is provided with a plurality of uniformly distributed annular grooves, and the annular grooves are sleeved with sealing rings.

Preferably, the terminal body is divided into a rubber umbrella skirt layer, an epoxy tube layer, a glue layer and an insulating tube layer from outside to inside in sequence, and an insulating agent is filled between the cable and the inner side wall of the terminal body.

Preferably, the cold shrink tube is divided into a semi-conducting belt, a metal mesh layer and a silicon rubber base layer from inside to outside in sequence.

Preferably, the cable is divided into a wire core, an insulating layer, a semi-conducting layer, an armor layer, a shielding layer and a sheath layer from inside to outside in sequence.

Compared with the prior art, the invention has the beneficial effects that: the through hole is in a circular truncated cone shape with the diameter gradually reduced from bottom to top, and the shape is beneficial to improving the thickness of the prefabricated stress cone, so that the strength of the prefabricated stress cone is increased, and the prefabricated stress cone is convenient to mount; the semi-conductive sleeve plays a role in balancing an electric field; the convex ring plays a role in guiding the cable; the shape of the cold-shrinkable tube enables the cold-shrinkable tube to tightly embrace the convex ring, the semi-conductive sleeve and the cable, the holding force is kept for a long time, a good sealing effect can be achieved, and liquid leakage is prevented; the hoop of the sealing ring is arranged on the periphery of the cold-shrink tube and applies pressure to the cold-shrink tube, so that the cold-shrink tube can be more tightly wrapped outside the cable; the silicon rubber base layer is made of insulating silicon rubber and plays an insulating role, the semi-conducting belt plays a role in balancing an electric field, and the metal net layer plays a role in shielding external electric signals. The invention has reasonable structural design, enhances the sealing effect on the gap of the component by arranging the cold shrink tube between the prefabricated stress cone and the flange, prevents liquid from leaking from the gap, has good insulating and waterproof properties and improves the safety.

Drawings

Fig. 1 is a front view of a silicone rubber cold shrink cable termination;

fig. 2 is a cross-sectional view of a silicone rubber cold shrink cable termination;

FIG. 3 is a schematic diagram of a pre-fabricated stress cone structure in a silicone rubber cold-shrink cable termination;

FIG. 4 is a schematic view of a cold shrink tube structure in a silicone rubber cold shrink cable terminal;

FIG. 5 is an enlarged view taken at A in FIG. 2;

FIG. 6 is a schematic view of a hierarchical structure of a side wall of a cold-shrinkable tube in a silicone rubber cold-shrinkable cable terminal;

fig. 7 is a schematic structural view of a cable in a silicone rubber cold-shrinkable cable terminal.

In the figure: 1-terminal body, 2-sealing tube, 3-wiring terminal, 4-flange, 5-cable, 6-prefabricated stress cone, 7-cold-shrink tube, 8-through hole, 9-semi-conductive sleeve, 10-convex ring, 11-first connecting tube, 12-second connecting tube, 13-central tube, 14-rubber shed layer, 15-epoxy tube layer, 16-adhesive layer, 17-insulating layer, 18-insulating agent, 19-semi-conductive tape, 20-metal mesh layer, 21-silicon rubber base layer, 22-wire core, 23-insulating layer, 24-semi-conductive layer, 25-armor layer, 26-shielding layer, 27-sheath layer and 28-sealing ring.

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 7, the present invention provides a technical solution: silicon rubber cold shrinkage formula cable termination, including terminal body 1 and cable 5, cable 5 wears to establish in terminal body 1, terminal body 1's bottom is connected with flange 4, the central through-hole corresponding with cable 5 is seted up on the flange 4 surface, terminal body 1's top is provided with sealed tube 2, binding post 3 is installed on sealed tube 2 top, terminal body 1 is inside to be provided with prefabricated stress awl 6 and shrinkage pipe 7, prefabricated stress awl 6 and the equal suit of cold shrink pipe 7 are in cable 5 periphery, cold shrink pipe 7 is located between prefabricated stress awl 6 and the flange 4.

The through hole 8 corresponding to the cable 5 is formed in the prefabricated stress cone 6, the through hole 8 is in a circular truncated cone shape with the diameter gradually reduced from bottom to top, the thickness of the prefabricated stress cone 6 is improved due to the shape, the strength of the prefabricated stress cone is increased, the prefabricated stress cone is convenient to install, the semi-conductive sleeve 9 is arranged at the bottom end of the prefabricated stress cone 6, the semi-conductive sleeve 9 is sleeved on the periphery of the cable 5, and the semi-conductive sleeve 9 plays a role in balancing an electric field.

The top of flange 4 is provided with bulge loop 10, bulge loop 10 suit is in the cable 5 periphery, and bulge loop 10 plays the guide effect to cable 5.

Cold shrink pipe 7 includes center tube 13, first connecting pipe 11 and second connecting pipe 12, center tube 13, first connecting pipe 11 and second connecting pipe 12 are integrated into one piece, the suit of center tube 13 is in the 5 peripheries of cable, 11 suits of first connecting pipe are in semi-conductive sleeve 9 peripheries, 12 suits of second connecting pipe are in bulge loop 12 peripheries, and the shape of cold shrink pipe 7 makes it can tightly embrace in bulge loop 10, semi-conductive sleeve 9 and cable 5 outsidely, holds tightly for a long time, can play good sealed effect, prevents the liquid seepage.

The outer side wall of the cold shrink tube 7 is provided with a plurality of uniformly distributed annular grooves, the annular grooves are sleeved with sealing rings 28, and the sealing rings 28 are hooped on the periphery of the cold shrink tube 7 and apply pressure to the cold shrink tube 7, so that the cold shrink tube 7 can be tightly wrapped outside the cable 5.

Terminal body 1 is divided into rubber umbrella skirt layer 14, epoxy tube layer 15, glue film 16 and insulating tube layer 17 from outside to inside in proper order, it has insulating agent 18 to fill between cable 5 and the terminal body 1 inside wall, and insulating agent 18 is liquid insulating silicon rubber, insulating oil etc..

The cold-shrinkable tube 7 is sequentially divided into a semi-conductive belt 19, a metal mesh layer 20 and a silicon rubber base layer 21 from inside to outside, the silicon rubber base layer 21 is made of insulating silicon rubber and plays an insulating role, the semi-conductive belt 19 plays a role in balancing an electric field, and the metal mesh layer 20 plays a role in shielding an external electric signal.

The cable 5 is divided into a core 22, an insulating layer 23, a semi-conducting layer 24, an armor layer 25, a shielding layer 26 and a sheath layer 27 in sequence from inside to outside.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Silicon rubber cold contraction type cable termination, including terminal body (1) and cable (5), its characterized in that: the cable (5) is arranged in the terminal body (1) in a penetrating mode, the bottom end of the terminal body (1) is connected with a flange (4), a central through hole corresponding to the cable (5) is formed in the surface of the flange (4), a sealing pipe (2) is arranged on the top end of the terminal body (1), a wiring terminal (3) is installed on the top end of the sealing pipe (2), a prefabricated stress cone (6) and a cold shrinkage pipe (7) are arranged inside the terminal body (1), the prefabricated stress cone (6) and the cold shrinkage pipe (7) are sleeved on the periphery of the cable (5), and the cold shrinkage pipe (7) is located between the prefabricated stress cone (6) and the flange (4).

2. The silicone rubber cold shrink cable termination of claim 1, wherein: set up through-hole (8) corresponding with cable (5) in prefabricated stress awl (6), through-hole (8) set up to follow the round platform shape that up diameter reduces gradually down, the bottom of prefabricated stress awl (6) is provided with semi-conductive sleeve (9), semi-conductive sleeve (9) suit is in cable (5) periphery.

3. The silicone rubber cold shrink cable termination of claim 2, wherein: the top of flange (4) is provided with bulge loop (10), bulge loop (10) suit is in cable (5) periphery.

4. The silicone rubber cold shrink cable termination of claim 3, wherein: cold shrink pipe (7) include center tube (13), first connecting pipe (11) and second connecting pipe (12), center tube (13), first connecting pipe (11) and second connecting pipe (12) are integrated into one piece, center tube (13) suit is in cable (5) periphery, first connecting pipe (11) suit is in semi-conductive sleeve (9) periphery, second connecting pipe (12) suit is in bulge loop (12) periphery.

5. The silicone rubber cold shrink cable termination of claim 1, wherein: the outer side wall of the cold shrinkage pipe (7) is provided with a plurality of uniformly distributed annular grooves, and sealing rings (28) are sleeved in the annular grooves.

6. The silicone rubber cold shrink cable termination of claim 1, wherein: terminal body (1) is from outer to interior rubber umbrella skirt layer (14), epoxy layer (15), glue film (16) and insulating tube layer (17) of dividing into in proper order, it has insulating agent (18) to fill between cable (5) and terminal body (1) inside wall.

7. The silicone rubber cold shrink cable termination of claim 1, wherein: the cold-shrinkable tube (7) is divided into a semi-conductive belt (19), a metal mesh layer (20) and a silicon rubber base layer (21) from inside to outside in sequence.

8. The silicone rubber cold shrink cable termination of claim 1, wherein: the cable (5) is sequentially divided into a wire core (22), an insulating layer (23), a semi-conducting layer (24), an armor layer (25), a shielding layer (26) and a sheath layer (27) from inside to outside.