CN206921571U

CN206921571U - A kind of low-smoke bittern-free highly fire-proof oxygen barrier layer power cable

Info

Publication number: CN206921571U
Application number: CN201720522059.6U
Authority: CN
Inventors: 王国新
Original assignee: Yunnan Juli Cable Ltd By Share Ltd
Current assignee: Yunnan Juli Cable Ltd By Share Ltd
Priority date: 2017-05-11
Filing date: 2017-05-11
Publication date: 2018-01-23
Anticipated expiration: 2027-05-11

Abstract

A kind of cable be the utility model is related to, and it is an object of the present invention to provide good, the safe low-smoke bittern-free highly fire-proof oxygen barrier layer power cable of a kind of frost-cracking-preventing, pull resistance.Used technical scheme is：A kind of low-smoke bittern-free highly fire-proof oxygen barrier layer power cable, more copper cores being twisted including reinforcement and along on the outside of reinforcement, the outside of the more twisted copper cores is enclosed with insulating barrier successively from inside to outside, screen layer, tensile layer and inner sheath, the carbon fiber heating silk that winding one extends along inner sheath length direction on the outside of the inner sheath, one oversheath of parcel on the outside of the carbon fiber heating silk, multiple reinforcing rings are set longitudinally along the cable on the outside of the oversheath, the reinforcing ring shapes materials and parts clamping by two semicircular and formed, the circumferentially arranged circle of reinforcing ring inwall accommodates the annular groove of steel wire rope, the adjacent reinforcing ring is connected by aluminum core line, the aluminum core line connecting steel wire ropes and ground wire.The utility model frost-cracking-preventing, pull resistance are good, safe.

Description

A kind of low-smoke bittern-free highly fire-proof oxygen barrier layer power cable

Technical field

It the utility model is related to a kind of cable, and in particular to a kind of low-smoke bittern-free highly fire-proof oxygen barrier layer power cable.

Background technology

Low-smoke halogen-free cable, toxic smog will not be sent when referring to without the materials such as halogen, not leaded cadmium chromium mercury, burning Environment-friendly cable.Power cable is the cable for transmitting and distributing electric energy, and power cable is usually used in Urban Underground power network, generated electricity Stand lead line, industrial and mining enterprises' in-line power and cross river sea submarine transmission line.With the development of science and technology with social demand Lifting, power cable play more and more important effect in life, and the use of power cable is also more and more extensive.Work as erection Power cable it is longer when, due to the presence of deadweight, there is the possibility that disconnected core or sheath fracture occurs in power cable, have peace Full hidden danger.When cable cover(ing) aging causes conductor exposed or voltage breakdown occurs for cable, if without safety protection facility, can The generation of security incident can be caused.In cold environments, bursting by freezing easily occurs for cable cover(ing)；And in high temperature environments, cable meeting Expand, make to produce the air gap in cable, the danger of voltage breakdown be present.

The content of the invention

The purpose of this utility model is to provide the low-smoke bittern-free highly fire-proof that a kind of frost-cracking-preventing, pull resistance are good, safe Oxygen barrier layer power cable.

To achieve the above object, the technical solution adopted in the utility model is：

A kind of low-smoke bittern-free highly fire-proof oxygen barrier layer power cable, including reinforcement, along twisted more copper on the outside of reinforcement Cored wire and the insulating barrier being wrapped on the outside of copper core, insulating barrier outside one screen layer of parcel, the screen layer outside is wrapped up One tensile layer, tensile layer outside one inner sheath of parcel, inner sheath outside winding one extend along inner sheath length direction Carbon fiber heating silk, one oversheath of parcel on the outside of the carbon fiber heating silk, on the outside of the oversheath longitudinally along the cable Multiple reinforcing rings are set, and the reinforcing ring shapes materials and parts clamping by two semicircular and formed, the reinforcing ring inwall circumferentially arranged one Circle accommodates the groove of steel wire rope, and the adjacent reinforcing ring is connected by aluminum core line, the aluminum core line connecting steel wire ropes and ground wire.

Preferably, the reinforcement and tensile layer are made by aramid yarn.

Preferably, the fire-retardant chamber extended along oversheath length direction is set between the oversheath outer wall and inwall, it is described Fire-retardant intracavitary fills expansion type flame retardant, and the inner sheath, the surfaces externally and internally of oversheath are coated with expansion fire-proof paint.

Preferably, the working of plastics sets the through hole through the left and right sides, and the aluminum core line connects through through hole and steel wire rope Connect.

Preferably, the oversheath outer wall sets the groove for accommodating aluminum core line.

The beneficial effects of the utility model embody a concentrated reflection of, a kind of low-smoke bittern-free highly fire-proof oxygen barrier described in the utility model Layer power cable, there is provided reinforcement and tensile layer, improves the tensile property of cable, can effectively avoid cored wire or sheath from occurring Fracture；And the utility model is also provided with carbon fiber heating silk, it can prevent cable cover(ing) from bursting by freezing occurring in cold environments；This Utility model is provided with multiple reinforcing rings on the outside of oversheath, and the steel wire rope contacted with oversheath, steel wire are set on the inside of reinforcing ring Rope is connected by aluminum core line with ground wire, when high-tension cable drop-in is such as struck by lightning, voltage breakdown, is caused because sheath damages When cable core is exposed, the security performance of high-tension cable by conduct current ground, can be added；And reinforcing ring can play beam The effect of cable is tied up, avoids cable from producing the air gap inside cable because excessively expanding under hot weather, cause cable The potential safety hazard of voltage breakdown be present.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the side view of wherein one section of the utility model.

Embodiment

1~2 the utility model is expanded on further below in conjunction with the accompanying drawings.

A kind of low-smoke bittern-free highly fire-proof oxygen barrier layer power cable, including reinforcement 1, along twisted more in the outside of reinforcement 1 Copper core 2 and the insulating barrier 3 for being wrapped in the outside of copper core 2, the outside of insulating barrier 3 one screen layer 4 of parcel, the screen layer 4 A tensile layer 5 is wrapped up in outside, and the outside of tensile layer 5 one inner sheath 6 of parcel, the reinforcement 1 and tensile layer 5 are by aramid yarn It is made；The carbon fiber heating silk 7 that the outside of inner sheath 6 winding one extends along the length direction of inner sheath 6, the carbon fiber heating The outside of silk 7 one oversheath 8 of parcel, it should be appreciated that carbon fiber heating silk 7 is arranged between inner sheath 6 and oversheath 8；Institute State the outside of oversheath 8 and multiple reinforcing rings 9 are set longitudinally along the cable, the reinforcing ring 9 shapes the clamping of materials and parts 10 by two semicircular Form, the circumferentially arranged circle of the inwall of reinforcing ring 9 accommodates the groove of steel wire rope 11, it should be appreciated that the inwall of reinforcing ring 9 It is brought into close contact with steel wire rope 11 with the outer wall of oversheath 8；The adjacent reinforcing ring 9 is connected by aluminum core line 12, the aluminum core line 12 connecting steel wire ropes 11 and ground wire, that is to say, that between the steel wire rope 11 and steel wire rope 11 of two adjacent reinforcing rings 9 and steel wire Connected between rope 11 and ground wire by aluminum core line 12, the outer wall of oversheath 8 sets the groove for accommodating aluminum core line 12.

Embodiment of the present utility model is described below, the utility model is provided with the He of reinforcement 1 made of aramid yarn Tensile layer 5, aramid fiber yarn density is small, stretch modulus is high, fracture strength is high, shrinkage factor is low, greatly improves the tensile property of cable, The generation for situations such as disconnected core, sheath fracture can effectively be prevented.And the utility model is also provided with carbon fiber heating silk 7, carbon is fine Tie up the electric conversion rate of heater strip 7 it is high, more energy efficient, when cable under low-temperature cold environment in use, cable cover(ing) can be avoided to send out Raw bursting by freezing.The utility model is provided with reinforcing ring 9 made of multiple plastics in the outside of oversheath 8, and the inner side of reinforcing ring 9 sets steel wire Rope 11, the inwall of reinforcing ring 9 and steel wire rope 11 are brought into close contact with the outer wall of oversheath 8, can prevent cable from being issued in hot weather It is raw excessively to expand, cause to produce the air gap in cable, avoid the potential safety hazard that voltage breakdown occurs for cable；Steel wire rope 11 is logical Aluminum core line 12 is crossed to be connected with ground wire, can be by electric current when high-tension cable generation voltage breakdown, electric leakage, conductor are exposed Ground is oriented to, improves the security performance of high-tension cable；In addition, oversheath 8 is also connected by aluminum core line 12 with ground wire, one can be entered The security performance of step lifting high-tension cable.

As further preferred scheme of the present utility model, set between the outer wall of oversheath 8 and inwall along oversheath 8 The fire-retardant chamber 13 of length direction extension, filling expansion type flame retardant in the fire-retardant chamber 13, the inner sheath 6, oversheath 8 it is interior Outer surface is coated with expansion fire-proof paint；Expansion type flame retardant is a kind of environmentally friendly Green Flammability agent, without halogen, is not also used Antimony oxide is synergist, and its system itself has synergy；It is provided with the oversheath 8 of the expansion type flame retardant surface in burning Carbonaceous froth bed can be generated, heat-insulated, oxygen barrier, suppression cigarette, antidrip and other effects is played, makes cable that there is excellent fire resistance；This reality Dilatancy fire resistant coating also is coated in the surfaces externally and internally of inner sheath 6, oversheath 8 with new, can further lift the anti-flammability of cable Energy.

Although the embodiment of the present invention is the foregoing described, it will be appreciated by those of skill in the art that not On the premise of the principle and essence of the present invention, various changes or modifications can be made to these embodiments, but these become More protection scope of the present invention is each fallen within modification.

Claims

A kind of 1. low-smoke bittern-free highly fire-proof oxygen barrier layer power cable, it is characterised in that：Including reinforcement（1）, along reinforcement（1）Outside More twisted copper cores of side（2）Be wrapped in copper core（2）The insulating barrier in outside（3）, the insulating barrier（3）Outside parcel one Screen layer（4）, the screen layer（4）Wrap up a tensile layer in outside（5）, the tensile layer（5）Wrap up an inner sheath in outside（6）, The inner sheath（6）Outside winds one along inner sheath（6）The carbon fiber heating silk of length direction extension（7）, the carbon fiber adds Heated filament（7）Wrap up an oversheath in outside（8）, the oversheath（8）Outside sets multiple reinforcing rings longitudinally along the cable（9）, The reinforcing ring（9）Materials and parts are shaped by two semicircular（10）Clamping forms, the reinforcing ring（9）The circumferentially arranged circle of inwall accommodates Steel wire rope（11）Annular groove, the adjacent reinforcing ring（9）Pass through aluminum core line（12）Connection, the aluminum core line（12）Connect steel Cord（11）And ground wire.
A kind of 2. low-smoke bittern-free highly fire-proof oxygen barrier layer power cable according to claim 1, it is characterised in that：The outer shield Set（8）Set between outer wall and inwall along oversheath（8）The fire-retardant chamber of length direction extension（13）, the fire-retardant chamber（13）Inside fill out Fill expansion type flame retardant, the inner sheath（6）, oversheath（8）Surfaces externally and internally be coated with expansion fire-proof paint.
A kind of 3. low-smoke bittern-free highly fire-proof oxygen barrier layer power cable according to claim 1, it is characterised in that：The reinforcement Muscle（1）And tensile layer（5）It is made by aramid yarn.
A kind of 4. low-smoke bittern-free highly fire-proof oxygen barrier layer power cable according to claim 1, it is characterised in that：The plastics Part（10）Through hole through the left and right sides, the aluminum core line are set（12）Through through hole and steel wire rope（11）Connection.
A kind of 5. low-smoke bittern-free highly fire-proof oxygen barrier layer power cable according to claim 1, it is characterised in that：The outer shield Set（8）Outer wall, which is set, accommodates aluminum core line（12）Groove.