CN205158943U - Armoured cable of high current -carrying capacity - Google Patents
Armoured cable of high current -carrying capacity Download PDFInfo
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- CN205158943U CN205158943U CN201520922016.8U CN201520922016U CN205158943U CN 205158943 U CN205158943 U CN 205158943U CN 201520922016 U CN201520922016 U CN 201520922016U CN 205158943 U CN205158943 U CN 205158943U
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- cable
- carrying capacity
- high current
- conductor
- armoured
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Abstract
The utility model discloses an armoured cable of high current -carrying capacity. This cable includes an at least cable core and armor, and this cable core includes the insulating layer of conductor and coating conductor, and its characterized in that, this cable are still including setting up in the heat dissipation layer of armor surface for heat to cable external radiation conductor circular telegram back production. The utility model provides an armoured cable of high current -carrying capacity is still including setting up in the heat dissipation layer of armor internal surface, or including setting up in the intraformational strap of armor around the covering if the copper strips winds the covering for heat to armor radiation or conduction conductor circular telegram back production. The utility model provides an armoured cable of high current -carrying capacity, still in filling the hollow region between the cable core that conductor and insulating layer are constituteed, and the gasket for packing in the hollow region between armor and the cable core, like glass fiber rope, cow hide paper string, inorganic paper string or PP rope.
Description
Technical field
The utility model relates to technical field of electric wires and cables, and more particularly, the utility model relates to a kind of armoured cable of high current-carrying capacity of easy heat radiation.
Background technology
Along with the increase of society energy demand, send out, join, defeated, become, trnamission capacity requires in urgent need to be improved in supply line, and adopts the transmission cable of high current-carrying capacity to be the primary factor improving trnamission capacity.Current-carrying capacity of cable refers to conductor can continuous bearing and do not cause its stable temperature to exceed the maximum current of setting, is one of core parameter of cable; User and designer can come kind and the specification size of selected cable according to load, working condition and current-carrying capacity of cable.In the last few years, lock armo cable is because of its superior fire resistance and compressive property, more and more extensive in the application of China, but its arch feature determines between armour and cable core, between each cable core has confined air gas-bearing formation to exist, and confined air gas-bearing formation serves thermal insulation function at electric current by during conductor temp .-elevating.Therefore due to lock armo cable dissipate heat poor-performing, the constant temperature of conductor raises, and then the resistivity of conductor continues to increase, make lock armo cable can only bear less electric current relative to other shielded version or unarmored cable, significantly reduce the ampacity of this cable.
Utility model content
For increasing the rate of heat dispation after armoured cable energising to improve the ampacity of cable, the utility model provides a kind of armoured cable of high current-carrying capacity of easy heat radiation.This armoured cable comprises the armour of at least one cable core and all cable cores of parcel, described cable core comprises the insulating barrier of conductor and coating conductor, it is characterized in that, this cable also comprises the heat dissipating layer being arranged at described armour outer surface, in order to the rear heat produced that is energized by conductor through armour Rapid radiating extremely described Exterior cable.
More preferably, the armoured cable of high current-carrying capacity provided by the utility model also comprises the heat dissipating layer being arranged at armour inner surface, in order to the heat produced after described conductor energising is dissipated to described armour fast.
Preferably, the armoured cable of high current-carrying capacity provided by the utility model, its heat dissipating layer is the black layer of polyurethane that roller coating technology is made.
Preferably, the armoured cable of high current-carrying capacity provided by the utility model, the thickness of its black layer of polyurethane is 5-7 micron.
Because black polyurethanes has good heat absorption width thermal property, by the armour outer surface at armoured cable, the heat dissipating layers such as black layer of polyurethane are set, heat that conductor after energising can be produced, that conduct to armour is well radiated in external environment condition rapidly, thus increase armour to seal up for safekeeping therein, the absorption of heat that conductor produces, effectively slow down the temperature increase rate after conductor energising, avoid the remarkable increase of conductor resistance rate; More preferably, by adding this black polyurethanes heat dissipating layer at armature of cable layer inner surface, more increase armour to seal up for safekeeping therein, the absorption of heat that conductor produces, because temperature raises the resistivity increase caused after thus more slowing down conductor energising.Relative to the lock armo cable without heat dissipating layer, the ampacity of cable provided by the utility model increases significantly.The black polyurethanes roller coating heat absorption width hot property of micron order thickness is good, is the preferred of the heat dissipating layer of the armoured cable as high current-carrying capacity provided by the utility model.
The armoured cable of high current-carrying capacity provided by the utility model, also comprises the metal tape lapping layer be arranged in armour.
The armoured cable of high current-carrying capacity provided by the utility model, its metal tape lapping layer is copper strips lapping layer.
By the armour outer surface at armoured cable, heat dissipating layer is set, inside arranges metal tape lapping layer, as the copper strips lapping layer conducting heat good, not only can tighten up each structure in cable center region, reduce the space shared by air layer, and due to the good heat conductivility of metallic copper, conductor after energising can be produced, the heat be enclosed in the confined air gas-bearing formation of armour inside absorbs well, and be radiated in external environment condition by black polyurethanes heat dissipating layer, thus the temperature increase rate effectively slowed down after conductor energising, avoid the remarkable increase of conductor resistance rate, therefore relative to without heat dissipating layer or the lock armo cable without metal tape lapping layer, the ampacity of cable provided by the utility model increases significantly.
The armoured cable of high current-carrying capacity provided by the utility model, also comprises in the hollow area that is filled between cable core that conductor and insulating barrier form, and the gasket for packing between armour and cable core in hollow area.
The armoured cable of high current-carrying capacity provided by the utility model, its gasket for packing is one or more combination in glass cord, kraft twine, inorganic paper string and PP rope.
By arranging the good gasket for packing of thermal conduction effect between the cable core of armoured cable, effectively can reduce the space shared by confined air gas-bearing formation hindering heat to transmit, the conductivity of the heat produced after increasing conductor energising; According to concrete ampacity demand and cost requirement, gasket for packing can be selected from glass cord, kraft twine, inorganic paper string and PP rope.
Adopt the armoured cable of said structure, do not increasing the sectional area of conductor, do not change on the basis of existing size design of cable core, the eddy current produced after being energized by conductor and the timely conduct radiation efficiently of resistance heat are in external environment condition, significantly reduce the temperature increase rate after conductor energising, compared to existing armoured cable, the ampacity of armoured cable provided by the utility model improves greatly.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of the preferred embodiment of the armoured cable of high current-carrying capacity provided by the utility model;
Wherein label declaration is as follows:
1-cable sheath
2-heat dissipating layer
3-heat dissipating layer or metal tape lapping layer
4-conductor
5-insulating barrier
6-gasket for packing
Embodiment
Now by reference to the accompanying drawings, better embodiment of the present utility model is introduced in detail.Although description of the present utility model will be introduced together in conjunction with this better embodiment, this feature not representing this utility model will be only limitted to this execution mode.Just the opposite, the object doing utility model introduction in conjunction with execution mode selects or transformation to cover other that likely extend based on claim of the present utility model.
Fig. 1 is the cross sectional representation of the utility model preferred embodiment.This armoured cable comprise armour 1, conductor 4, around the insulating barrier 5 of conductor 4 and gasket for packing 6, the outer roller of armour 1 scribbles the heat dissipating layer 2 of black polyurethanes formation, the structure sheaf 3 be arranged at inside armour 1 can be the heat dissipating layer of black polyurethanes roller coat, also can be metal tape lapping layer, as copper strips lapping layer.The structure sheaf 3 of armour 1 inside selects metal tape lapping layer, especially the copper strips that heat conduction is good is wrapped, can by each structure in cable center region as conductor 4, insulating barrier 5, gasket for packing 6 wrap up more tight, further reduce the volume shared by air layer, therefore more reduce the heat that confined air gas-bearing formation causes and hoard effect, compare and the heat dissipating layer selecting black polyurethanes roller coat, this structure has more excellent high current-carrying capacity performance.
Gasket for packing 6 can select the cables such as glass cord, kraft twine, inorganic paper string or PP rope to commonly use packing material, and wherein the radiating effect of glass cord is the most excellent, but cost is slightly high compared with other material.Can consider according to ampacity needed for armoured cable reality and cost control when concrete selection.
Table 1 gives the different embodiment of armoured cable provided by the utility model and the ampacity experimental result contrast of existing cable.As can be seen from this experimental result table of comparisons, armour outer surface roller coat black polyurethanes heat dissipating layer, copper strips lapping layer is set inside armour, and adopt the armoured cable (numbering 6) in the space in glass cord filled cable central area between cable core, there is experiment ampacity the most excellent, relative to the original armoured cable (numbering 1) improved without the utility model design, its ampacity improves 30% nearly.
The ampacity experimental result table of comparisons of table 1 armoured cable provided by the utility model and existing armoured cable
Above better embodiment of the present utility model is illustrated, but the utility model is not limited thereto, the various variants obtained in the scope not departing from its aim, all belongs to the scope that the utility model is protected.Such as, heat dissipating layer can select other heat absorptions and radiative property preferably material or technique preparation.And for example, selecting can the elastomeric material in space between dense packing effect cable conductor, between cable core and armour, and expection can obtain higher ampacity and promote.
Claims (8)
1. the armoured cable of a high current-carrying capacity, comprise the armour of at least one cable core and all cable cores of parcel, described cable core comprises the insulating barrier of conductor and coated described conductor, it is characterized in that, described cable also comprises the heat dissipating layer being arranged at described armour outer surface, in order to described conductor is energized the rear heat produced through armour Rapid radiating to described Exterior cable.
2. the armoured cable of high current-carrying capacity as claimed in claim 1, it is characterized in that, described cable also comprises the heat dissipating layer being arranged at described armour inner surface, in order to the heat produced after described conductor energising is dissipated to described armour fast.
3. the armoured cable of high current-carrying capacity as claimed in claim 1 or 2, it is characterized in that, described heat dissipating layer is the black layer of polyurethane that roller coating technology is made.
4. the armoured cable of high current-carrying capacity as claimed in claim 3, it is characterized in that, the thickness of described black layer of polyurethane is 5-7 micron.
5. the armoured cable of high current-carrying capacity as claimed in claim 1, it is characterized in that, described cable also comprises the metal tape lapping layer of all cable cores of parcel be arranged at inside armour.
6. the armoured cable of high current-carrying capacity as claimed in claim 5, it is characterized in that, described metal tape lapping layer is copper strips lapping layer.
7. the armoured cable of the high current-carrying capacity as described in claim 1 or 2 or 5, is characterized in that, described cable also comprises the gasket for packing in the hollow area that is filled between described cable core, between described armour and cable core.
8. the armoured cable of high current-carrying capacity as claimed in claim 7, is characterized in that, described gasket for packing is one or more combination in glass cord, kraft twine, inorganic paper string and PP rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520922016.8U CN205158943U (en) | 2015-11-18 | 2015-11-18 | Armoured cable of high current -carrying capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520922016.8U CN205158943U (en) | 2015-11-18 | 2015-11-18 | Armoured cable of high current -carrying capacity |
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| Publication Number | Publication Date |
|---|---|
| CN205158943U true CN205158943U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520922016.8U Active CN205158943U (en) | 2015-11-18 | 2015-11-18 | Armoured cable of high current -carrying capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710689A (en) * | 2015-11-18 | 2017-05-24 | 通用（天津）铝合金产品有限公司 | High-current-carrying-capacity armored cable |
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2015
- 2015-11-18 CN CN201520922016.8U patent/CN205158943U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710689A (en) * | 2015-11-18 | 2017-05-24 | 通用（天津）铝合金产品有限公司 | High-current-carrying-capacity armored cable |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |