CN206349168U

CN206349168U - A kind of freeze proof cable for being applied to extremely cold condition

Info

Publication number: CN206349168U
Application number: CN201720070340.0U
Authority: CN
Inventors: 陈占刚; 魏朋亮
Original assignee: Shenyi Cable Co Ltd
Current assignee: Shenyi Cable Co Ltd
Priority date: 2017-01-20
Filing date: 2017-01-20
Publication date: 2017-07-21
Anticipated expiration: 2027-01-20

Abstract

The utility model is related to a kind of freeze proof cable for being applied to extremely cold condition, it includes the Internal cable of more than three, the inserts and cladding that are filled between adjacent two Internal cable are arranged on the external coating on the outside of the Internal cable and inserts, the Internal cable includes conductive core, the insulating barrier on the outside of conductive core is successively set on from inside to outside, internal shield, separation layer and external shielding layer, the external coating includes the enhancement layer set gradually from inside to outside, thermal insulation layer, braiding layer, belting layer and frost retarding layer, neck is provided with the conductive core, pliability of the cable under the conditions of extremely trembling with fear is effectively ensured, prevent its endure cold after cable sheath be hardened become fragile influence tensile strength the problem of, prevent the phenomenon for occurring peeling off between conductive core and insulating barrier, improve its covered effect.

Description

A kind of freeze proof cable for being applied to extremely cold condition

Technical field

The utility model is related to a kind of cable, specifically a kind of freeze proof cable for being applied to extremely cold condition.

Background technology

In the prior art, cable is when winter temperature is relatively low, in use, electricity especially under the Northeast's extreme severe cold environment Cable, which is easily affected by temperature, there is stiff situation, is cooled the cable anchylosed in tension, and often outermost layer bears to draw Power, does not have the device of any fixation because individual layer tensile strength is relatively low, and typically between conductive core and cable, produced in temperature In the case of change, tension easily causes the phenomenon that the envelope curve of conductive core and outside comes off, and potential safety hazard is caused, on solving State problem, on the one hand need to improve cable adaptability in the presence of a harsh environment, on the other hand need conductive core and cable it Between structure be improved, prevent obscission.

Utility model content

The purpose of this utility model be to overcome the defect of prior art there is provided a kind of condition that can be applied to extremely to tremble with fear around Group line.

To achieve these goals, the technical scheme that the utility model is taken is as follows：

A kind of freeze proof cable for being applied to extremely cold condition, it includes the Internal cable of more than three, is filled in adjacent two Inserts and cladding between the Internal cable are arranged on the external coating on the outside of the Internal cable and inserts, described Internal cable includes conductive core, and insulating barrier on the outside of conductive core, internal shield, separation layer and outer are successively set on from inside to outside Screen layer, the external coating includes enhancement layer, thermal insulation layer, braiding layer, the belting layer and antifreeze set gradually from inside to outside Neck is provided with layer, the conductive core.

Further, the insulating barrier is polytetrafluoroethylene floor.

Further, separation layer is insulating lacquer layer.

Further, the enhancement layer is glass layer.

Further, the thermal insulation layer is super glass wool layer.

Further, the belting layer is PP material foaming shape layers.

Further, the frost retarding layer is thermoplastic elastomer.

Further, it is provided with scroll clearance for insulation inside the internal shield and external shielding layer.

Compared with prior art, having the beneficial effect that acquired by the utility model：

The utility model sets frost retarding layer, and pliability of the cable under the conditions of extremely trembling with fear is effectively ensured, and prevents it electric after enduring cold Cable crust is hardened the problem of becoming fragile influence tensile strength, and by setting neck on conductive core outer ring, being located at for neck is interior Footpath side opening more than external diameter side opening, increase contact area, prevent occur under pulled condition conductive core with Envelope curve comes off, and produces the problem of sliding relatively, on the other hand avoids because different materials coefficient of thermal expansion and contraction difference causes Occur the phenomenon peeled off between battery core and insulating barrier, improve its covered effect.

Scroll is provided with inside the utility model internal shield and external shielding layer, the internal shield and external shielding layer There is clearance for insulation between clearance for insulation, helix adjacent turn body, the vortex flow that screen layer surface induction goes out is reduced, whirlpool electricity is reduced The limitation to the current-carrying capacity of electric wire is flowed, solution current-carrying capacity is bigger, then the problem of eddy-current loss is bigger.

The utility model belting layer is PP material foaming shape layers, is molded by PP material foamings, foaming process makes internal shape Into bubble, band hardness is low, makes cable more soft, it is not easy to fracture, when cable is extruded, and can provide stress buffer, protects Protect and lead body not to be destroyed, the dielectric constant of belting layer is relatively low in addition, advantageously reduce the impedance of cable and the loss of signal, improve The quality of cable signal transmission.

The utility model frost retarding layer uses thermoplastic elastomer, and thermoplastic elastic material has good antifreeze effect Really, pliability of the cable under the conditions of extremely trembling with fear is can effectively ensure that, makes cable more soft, it is not easy to fracture.

The utility model enhancement layer uses glass layer, and glass fiber material has that good insulating, heat resistance be strong, anti-corruption Corrosion is good, the characteristics of high mechanical strength, effectively improves the stretch-proof strength of cable.

The utility model uses polytetrafluoroethylene floor as insulating barrier and insulating lacquer layer as separation layer, and insulation effect is good It is good.

Brief description of the drawings

Accompanying drawing 1 is utility model structural representation；

Wherein 1, conductive core, 2, insulating barrier, 3, internal shield, 4, separation layer, 5, external shielding layer, 6, frost retarding layer, 7, filling Material, 8, enhancement layer, 9, thermal insulation layer, 10, braiding layer, 11, belting layer, 12, neck.

Embodiment

Further details of narration is carried out to the utility model below in conjunction with accompanying drawing.

As shown in Figure 1, a kind of freeze proof cable for being applied to extremely cold condition, it includes the Internal cable of more than three, filled out The inserts 7 and cladding filled between adjacent two Internal cable is arranged on the Internal cable and the outside of inserts 7 External coating, the Internal cable includes conductive core 1, and the insulating barrier 2, interior in the outside of conductive core 1 is successively set on from inside to outside Screen layer 3, separation layer 4 and external shielding layer 5, the insulating barrier 2 are polytetrafluoroethylene floor, and the separation layer is insulating lacquer layer, Polytetrafluoroethylene floor is as insulating barrier and insulating lacquer layer as separation layer, and insulation effect is good.The external coating is included by interior Enhancement layer 8, thermal insulation layer 9, braiding layer 10, belting layer 11 and the frost retarding layer 6 outwards set gradually, the enhancement layer 8 is glass Fibrous layer, the enhancement layer 8 is glass layer, and glass fiber material has that good insulating, heat resistance be strong, corrosion resistance is good, The characteristics of high mechanical strength, the stretch-proof strength of cable is effectively improved, the thermal insulation layer 9, can be effective using super glass wool layer The inner. layers of thermal insulation layer 9 are protected, the bursting by freezing phenomenon under the conditions of extremely trembling with fear is prevented, the belting layer 11 is molded for PP material foamings Layer, PP material foaming shape layers are molded by PP material foamings, and foaming process makes to be internally formed bubble, and band hardness is low, makes cable It is more soft, it is not easy to fracture, when cable is extruded, stress buffer can be provided, protect conductor not to be destroyed, in addition belting layer Dielectric constant it is relatively low, advantageously reduce the impedance of cable and the loss of signal, improve the quality of cable signal transmission,

The frost retarding layer 6 is thermoplastic elastomer, and thermoplastic elastic material has good antifreezing effect, can be effective Ensure pliability of the cable under the conditions of extremely trembling with fear, make cable more soft, it is not easy to fracture.Card is provided with the conductive core 1 Groove 12, the opening for being located at the inner side of conductive core 1 of neck 12 is more than the opening for being located at the outside of conductive core 2, on the one hand increase contact surface Product, prevents and occurs conductive core under pulled condition and come off with envelope curve, and the problem of produce relative slide, on the other hand avoids Because different materials coefficient of thermal expansion and contraction difference causes occur the phenomenon peeled off between conductive core 1 and insulating barrier 2, its cladding is improved Effect.

The separation layer 42 is insulating lacquer layer, and insulating lacquer layer thickness is 0.2mm-0.3mm, and the separation layer 42 is using insulation The mode of paint coating is covered in the outside of internal shield 3.

The insulating barrier 2 can be from polytetrafluoroethylene (PTFE), polyethylene, polypropylene, polystyrene or foamed polyethylene combination Thing material.Pliability of the cable under the conditions of extremely trembling with fear is ensured using frost retarding layer, makes cable more soft, it is not easy to fracture, makes it It can be used under the conditions of extremely trembling with fear.

Processing uses process：

The core for combining copper conductor, aluminium conductor or both is shaped in mould, and generation is arranged in conductive core 1 Neck, then the material of insulating barrier 2 of molten condition is coated to conductive core 1, then cooled down, the internal shield 3 be high-conductivity silicon rubber, and insulating lacquer layer is coated on the surface of internal shield 3 with coating method, then after insulating lacquer layer cooling, External shielding layer 5 under molten condition is coated on separation layer 4, after the cooling of external shielding layer 5, by inserts 7 and Internal cable It is wrapped in together in enhancement layer 8, inserts 7 is mainly used to fill the space between many Internal cable, prevents the work in extruding Under, there is sunken phenomenon in cable, and inserts 7 can use insulation material, protect Internal cable not by bursting by freezing, in enhancement layer 8 outside claddings set thermal insulation layer 9 and braiding layer 10, then in the outer wrapping foaming layer 11 of braiding layer 10, then pass it through melting The frost retarding layer 6 of state, makes frost retarding layer 6 coat braiding layer 10, cable is had antifreezing effect, under the conditions of cable is extremely trembled with fear In use, being not in the phenomenon such as to be broken, come off.

Embodiment described above is only preferred embodiment of the present utility model, and the not feasible implementation of the utility model It is exhaustive.For persons skilled in the art, on the premise of without departing substantially from the utility model principle and spirit, it is made Any obvious change gone out, should all be contemplated as falling with claims of the present utility model.

Claims

1. a kind of freeze proof cable for being applied to extremely cold condition, it is characterised in that it includes the Internal cable of more than three, is filled in Inserts between adjacent two Internal cable（7）And cladding is arranged on the Internal cable and inserts（7）Outside External coating, the Internal cable include conductive core（1）, conductive core is successively set on from inside to outside（1）The insulating barrier in outside （2）, internal shield（3）, separation layer（4）And external shielding layer（5）, the external coating includes the increasing that sets gradually from inside to outside Strong layer（8）, thermal insulation layer（9）, braiding layer（10）, belting layer（11）And frost retarding layer（6）, the conductive core（1）On be provided with card Groove（12）.

2. a kind of freeze proof cable for being applied to extremely cold condition according to claim 1, it is characterised in that the insulating barrier （2）For polytetrafluoroethylene floor.

3. a kind of freeze proof cable for being applied to extremely cold condition according to claim 1, it is characterised in that separation layer（4）For Insulating lacquer layer.

4. a kind of freeze proof cable for being applied to extremely cold condition according to claim 1, it is characterised in that the enhancement layer （8）For glass layer.

5. a kind of freeze proof cable for being applied to extremely cold condition according to claim 1, it is characterised in that the thermal insulation layer （9）For super glass wool layer.

6. a kind of freeze proof cable for being applied to extremely cold condition according to claim 1, it is characterised in that the belting layer （11）For PP material foaming shape layers.

7. a kind of freeze proof cable for being applied to extremely cold condition according to claim 1, it is characterised in that the frost retarding layer （6）For thermoplastic elastomer.