CN2151559Y

CN2151559Y - Power cable joint

Info

Publication number: CN2151559Y
Application number: CN 93227389
Authority: CN
Inventors: 刘瑞平
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-23
Filing date: 1993-02-23
Publication date: 1993-12-29
Anticipated expiration: 2003-02-23

Abstract

The utility model discloses a power cable joint. The power cable joint is characterized in that the outer side of the full insulation of the joint is respectively coated with an inner sealing protective layer and an outer sealing protective layer which are composed of a non-alkali glass ribbon and an epoxy resin and a shielding layer positioned between the inner sealing protective layer and the outer sealing protective layer and respectively composed of a self-adhesive tape, a copper foil and a grounding wire. The utility model has the advantages of simple manufacturing process, small size, good radiation effect, low cost and short curing time.

Description

Power cable joint

The utility model relates to the installation of cable, is specially the joint that two power cables are coupled together.

At present, the transition joint of power cable, generally be inner be crimped on every heart yearn of cable correspondence together by tube connector after, outside wrapped heart yearn increases around insulation, in the outside wrapped full packaged insulation materials of many heart yearns, full packaged insulation materials outer wrap lead sleeve is as screen again, and most external is the connector box that becomes cast aluminium to make by plastics, cast iron, and filling insulation curing materials in lead sleeve and between connector box and the sleeve pipe, as asphaltic base insulating cement or epoxy resin.There are two major defects in the cable joint of this structure: the one, and said insulation curing materials will adopt the pouring-in filling of pass under the heating and melting state, needing after the injection could cooled and solidified through a few hours, complex process, operating time are long, and the scene that influences is in time sent; The 2nd, this joint volume is bigger, and its filler is because of poor thermal conductivity, and volume causes radiating effect bad greatly, often makes the caloric value of electric cable with large cross-section joint can not get in time shedding and causes thermal breakdown, threatens the safe operation of cable line.

The purpose of this utility model is to provide that a kind of manufacture technology is simple, curing time is short, volume is little, the power cable connector of joint good heat dissipation effect.

The purpose of this utility model is achieved in that by the heart yearn of tube connector with the cable correspondence and is crimped on together; the wrapped heart yearn in outside increases around insulation; the many outside wrapped full packaged insulation materials of heart yearn; the outside wrapped interior seal protection layer that constitutes by alkali-free glass silk ribbon and epoxy resin of full packaged insulation materials; the outside wrapped screen that constitutes by semi-conductive rubber self-adhesive tape, Copper Foil, earth connection and semi-conductive rubber self-adhesive tape respectively from inside to outside of seal protection layer in being somebody's turn to do, the wrapped again external seal protective layer that constitutes by alkali-free glass silk ribbon and epoxy resin in the outside of screen.

Accompanying drawing is depicted as structural representation of the present utility model.Below in conjunction with accompanying drawing structure of the present utility model and manufacture method are described in detail.

Connect with the heart yearn 10 of tube connector 11 with cable, every heart yearn connects the wrapped heart yearn in outside, back and increases around insulation 7, makes mutually insulated; Wrapped full packaged insulation materials 6 outside many heart yearns of cable then; The overlapping wrapped one deck of usefulness alkali-free glass silk ribbon that continues, smear one deck epoxy coating on its surface then, follow overlapping more wrapped one deck alkali-free glass silk ribbon, be coated with one deck epoxy resin coating again, so, wrapped three layers altogether, seal protection layer 5 in constituting, the topped cable sheath of this protective layer 8 two ends 20 millimeter; Next from the cable sheath apart from the end about 30 millimeters overlapping wrapped one deck semi-conductive rubber self-adhesive tapes 4, the Copper Foil 3 that its outer wrapped layer thickness is 0.03 millimeter, copper foil surface twines ground wire, ground wire two ends and 9 soldering and sealing of cable steel first or mechanical Fixing Method chucking, wrapped again one deck semi-conductive rubber self-adhesive tape 2 outside ground wire; At last its outside from cable steel first apart from end 100 millimeter with above-mentioned in the same wrapped external seal protective layer 1 that constitutes by alkali-free glass silk ribbon and epoxy resin of seal protection layer material with method for production.

If desired, also the overlapping one deck polyvinyl chloride band that holds of seal protection laminar surface outside prevents that epoxy resin from dropping down at solidification process at home and abroad, makes the curing molding rear surface smooth smooth.

This power cable connector has been exempted the manufacture technology that injects filler in the housing, and employing is smeared with layering wrapped by hand, and technology is simple; Epoxy resin is as adhesive coating, and consumption is few, and quick solidifying, joint are manufactured the very express delivery that finishes; The mechanical strength height of joint, electric property and good corrosion resistance, the comparable existing joint of volume dwindle 3-5 doubly, good heat dissipation effect, and its manufacturing cost reduces about half than existing joint.

Claims

1; a kind of power cable connector; be crimped on together by the heart yearn (10) of tube connector (11) the cable correspondence; the wrapped heart yearn in outside increases around insulation (7); the many outside wrapped full packaged insulation materials (6) of heart yearn; it is characterized in that; at the outside wrapped interior seal protection layer (5) that constitutes by alkali-free glass silk ribbon and epoxy resin of said full packaged insulation materials; should coat screen in interior seal protection layer outside; this screen is from inside to outside respectively by semi-conductive rubber self-adhesive tape (4); Copper Foil (3); earth connection and semi-conductive rubber self-adhesive tape (2) constitute, the outside external seal protective layer (1) for being made of alkali-free glass silk ribbon and epoxy resin of this screen.