CN204087907U - Water resistant tree aluminium alloy conductor medium-pressure power cable - Google Patents
Water resistant tree aluminium alloy conductor medium-pressure power cable Download PDFInfo
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- CN204087907U CN204087907U CN201420528966.8U CN201420528966U CN204087907U CN 204087907 U CN204087907 U CN 204087907U CN 201420528966 U CN201420528966 U CN 201420528966U CN 204087907 U CN204087907 U CN 204087907U
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Abstract
A kind of water resistant tree aluminium alloy conductor medium-pressure power cable, comprise: conductor element, conductor element comprises aluminium alloy conductor, the lateral cross section of aluminium alloy conductor designs for sector structure, aluminium alloy conductor is connected to form the conduction aggregate of cylinder or circular ring structure, is enclosed with conductor screen, is enclosed with insulating barrier in the outside of conductor screen in the outside of conduction aggregate, be enclosed with insulation shielding in the outside of insulating barrier, be enclosed with metallic shield in the outside of insulation shielding; Be arranged at the guard assembly outside conductor element, guard assembly comprises the sheath, armour and the outer jacket that set gradually from inside to outside.Designed by said structure, first, by carrying out preforming to conductor monofilament, improving the activity coefficient of conductor and pressing coefficient, reducing the space of conductor, prevent the aqueous vapor in air from entering conductor.Adopt water-resistant tree cross-linked polyethylene insulating material, in Insulation Material, add water resistant tree inhibitor, effectively reduce the generation of insulation water tree.
Description
Technical field
The utility model relates to electric power cable technical field, more particularly, and particularly a kind of water resistant tree aluminium alloy conductor medium-pressure power cable.
Background technology
Aluminum alloy conductor cable is for conductor with AA8000 series aluminium alloy material, pass through technique adjustment, the mechanical performances such as the percentage elongation of aluminium alloy conductor, creep-resistant property, pliability are significantly improved, increases the connection reliability of system, solve the problem of fine aluminium conductor electrochemical corrosion simultaneously.Along with the continuous use of aluminium alloy conductor, middle pressure aluminum alloy conductor cable starts to derive thereupon.But the water-treeing phenomenon that XLPE insulation occurs under strong magnetic field action, become the main cause that voltage of middle-high pressure crosslinking cable is not grown useful life.
XLPE insulation is that a kind of organic peroxide that contains is as the polyethylene of DCP (cumyl peroxide), this peroxide is under HTHP and inert gas environment, with polyethylene generation chemical reaction, thermoplastic polyethylene is made to become the polyethylene of thermosetting (elastomer), i.e. XLPE.
The definition of water tree is " in insulation, there is moisture, electric stress and some risk factor, some microchannels as developed into when impurity, projection, space charge or ion ".Under the effect of AC field and moisture, water tree is a kind of phenomenon that degraded occurs insulating material of polymer.Under the acting in conjunction of moisture and electric field, water tree brings out the main cause that high voltage power cable destroys.
Utility model content
In view of this, the utility model provides a kind of water resistant tree aluminium alloy conductor medium-pressure power cable, to solve the problem.
For achieving the above object, the utility model provides following technical scheme:
A kind of water resistant tree aluminium alloy conductor medium-pressure power cable, comprising:
Conductor element, described conductor element comprises the aluminium alloy conductor by pressure roller roll forming, the lateral cross section of described aluminium alloy conductor designs for sector structure, described aluminium alloy conductor includes many, whole described aluminium alloy conductors is connected to form the conduction aggregate of cylinder or circular ring structure, conductor screen is enclosed with in the outside of described conduction aggregate, described conductor screen is polyethylene conductor screen, insulating barrier is enclosed with in the outside of described conductor screen, described insulating barrier is water resistant tree processes for chemically crosslinked polyethylene insulating barrier, insulation shielding is enclosed with in the outside of described insulating barrier, the semi-conductive insulation shield of described insulation shielding to be peelable cross-linked type polyethylene be base-material, metallic shield is enclosed with in the outside of described insulation shielding,
Be arranged at the guard assembly outside described conductor element, described guard assembly comprises the sheath, armour and the outer jacket that set gradually from inside to outside.
Preferably, described conductor element includes multiple, and whole described conductor elements offsets; Between described guard assembly and described conductor element, there is gap, in described gap, be filled with non-hygroscopic PP restrict or alkali-free glass wool.
Preferably, be provided with in the inner side of described guard assembly for whole described conductor elements being carried out the fixing stranding twining package tape of binding.
Designed by said structure, the beneficial effects of the utility model are: first, by carrying out preforming to conductor monofilament, improving the activity coefficient of conductor and pressing coefficient, reducing the space of conductor, prevent the aqueous vapor in air from entering conductor.Adopt water-resistant tree cross-linked polyethylene insulating material, in Insulation Material, add water resistant tree inhibitor, effectively reduce the generation of insulation water tree.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of water resistant tree aluminium alloy conductor medium-pressure power cable in a kind of embodiment of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, Fig. 1 is the structural representation of water resistant tree aluminium alloy conductor medium-pressure power cable in a kind of embodiment of the utility model.
The utility model provides a kind of water resistant tree aluminium alloy conductor medium-pressure power cable, comprise: conductor element, conductor element comprises the aluminium alloy conductor 1 by pressure roller roll forming, the lateral cross section of aluminium alloy conductor 1 designs for sector structure, aluminium alloy conductor 1 includes many, whole aluminium alloy conductors 1 is connected to form the conduction aggregate of cylinder or circular ring structure, conductor screen 2 is enclosed with in the outside of conduction aggregate, conductor screen 2 is polyethylene conductor screen 2, insulating barrier 3 is enclosed with in the outside of conductor screen 2, insulating barrier 3 is water resistant tree processes for chemically crosslinked polyethylene insulating barrier 3, insulation shielding 4 is enclosed with in the outside of insulating barrier 3, the semi-conductive insulation shield 4 of insulation shielding 4 to be peelable cross-linked type polyethylene be base-material, metallic shield 5 is enclosed with in the outside of insulation shielding 4, be arranged at the guard assembly outside conductor element, guard assembly comprises the sheath 6, armour 7 and the outer jacket 8 that set gradually from inside to outside.Wherein, conductor element includes multiple, and whole conductor elements offsets; Between guard assembly and conductor element, there is gap, in gap, be filled with non-hygroscopic PP restrict or alkali-free glass wool.Be provided with in the inner side of guard assembly and bundle fixing stranding twining package tape for being carried out by whole conductor elements.
The utility model is a kind of power cable be applied within the scope of rated voltage 8.7/10kV, 8.7/15kV and 26/35kV, be applicable to the electric line of the complicated occasion of electromagnetic interference, specifically a kind of novel aluminum alloy conductor 1 medium-pressure power cable with performances such as quality is light, waterproof tree generates, antijamming capability is strong, corrosion-resistant, high-strength creep resistants.
According to said structure design, embodiment of the present utility model is:
The water-resistant tree aluminium alloy conductor medium-pressure power cable that the present embodiment provides, its primary structure comprises cable conductor, conductor screen 2, insulating barrier 3, insulation shielding 4, metallic shield 5, sheath 6, armour 7 and outer jacket 8.Aluminium alloy conductor 1 in figure, adopts A8030 series alloys, by pressure roller to aluminium alloy monofilament be rolled shaping after, stranded according to a definite sequence; Conductor screen 2, adopt not peelable cross-linked type polyethylene to be that the semiconductive material of base-material extrudes and forms, its thickness is 0.6-0.8mm; Insulating barrier 3, adopt water resistant tree processes for chemically crosslinked polyethylene material to extrude, its nominal thickness is divided into 4.5mm and 10.5mm according to cable voltage class; Insulation shielding 4, adopt peelable cross-linked type polyethylene to be that the semiconductive material of base-material extrudes and forms, its thickness is 0.6-0.8mm; Metallic shield 5, employing copper strips is overlapping wrapped to be formed, copper strips thickness 0.05mm, and rate 25%-30% put up by copper strips; Drainage thread, adopt 6-10 root copper wire evenly to dredge around forming, drainage thread diameter selects the annealing copper wire of 1.0-3.0mm according to fault current; Fill, adopt non-hygroscopic PP rope or alkali-free glass wool to fill; Stranding twining package tape 8, adopts that nonwoven fabrics or alkali-free glass silk ribbon are overlapping wrapped to be formed, and wrappedly puts up rate 15%-25%; Sheath 6, adopts H-90 type PVC plastic or vinyon to extrude and forms, and reaches the effect of protection insulated wire cores and prevention moisture radial migration; Armour 7, adopts stainless steel band or aluminum alloy strip Double-layer gap is wrapped forms, and makes cable possess stronger radial crush resistance energy; Outer jacket 8, adopts H-90 type PVC plastic or low smoke halogen-free polyolefine material to extrude and forms.
Designed by said structure, the beneficial effects of the utility model:
The utility model, for not high defect in jewelling alloy conductor 1 power cable useful life at present, provides a kind of novel aluminum alloy conductor 1 medium-pressure power cable with performances such as quality is light, waterproof tree generates, antijamming capability is strong, corrosion-resistant, high-strength creep resistants.
First, by carrying out preforming to conductor monofilament, improving the activity coefficient of conductor and pressing coefficient, reducing the space of conductor, prevent the aqueous vapor in air from entering conductor.
Secondly, in three-layer co-extruded process, increase the pressure of curing tube, bring up to 10-13 standard atmospheric pressure by the standard atmospheric pressure of original 8-9, conductor screen 2 and conductor are combined closely, reduces section space, prevent aqueous vapor from entering.
Finally, adopt water-resistant tree cross-linked polyethylene insulating material, in Insulation Material, add water resistant tree inhibitor, effectively reduce the generation of insulation water tree.
Compared with prior art: the utility model has very strong water resistant tree generation ability; Additionally do not increase other waterproof materials and waterproof construction, effectively reduce cable production cost; Preforming conductor structure can also reach the effect reducing cable conductor internal stress and even cable magnetic field; In metal copper strip shielding, evenly not only the drainage copper wire dredged around placing has drainage but also have function of shielding concurrently.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. a water resistant tree aluminium alloy conductor medium-pressure power cable, is characterized in that, comprising:
Conductor element, described conductor element comprises the aluminium alloy conductor (1) by pressure roller roll forming, the lateral cross section of described aluminium alloy conductor designs for sector structure, described aluminium alloy conductor includes many, whole described aluminium alloy conductors is connected to form the conduction aggregate of cylinder or circular ring structure, conductor screen (2) is enclosed with in the outside of described conduction aggregate, described conductor screen is polyethylene conductor screen, insulating barrier (3) is enclosed with in the outside of described conductor screen, described insulating barrier is water resistant tree processes for chemically crosslinked polyethylene insulating barrier, insulation shielding (4) is enclosed with in the outside of described insulating barrier, the semi-conductive insulation shield of described insulation shielding to be peelable cross-linked type polyethylene be base-material, metallic shield (5) is enclosed with in the outside of described insulation shielding,
Be arranged at the guard assembly outside described conductor element, described guard assembly comprises the sheath (6), armour (7) and the outer jacket (8) that set gradually from inside to outside.
2. water resistant tree aluminium alloy conductor medium-pressure power cable according to claim 1, is characterized in that,
Described conductor element includes multiple, and whole described conductor elements offsets;
Between described guard assembly and described conductor element, there is gap, in described gap, be filled with non-hygroscopic PP restrict or alkali-free glass wool.
3. water resistant tree aluminium alloy conductor medium-pressure power cable according to claim 1, is characterized in that,
Be provided with in the inner side of described guard assembly and bundle fixing stranding twining package tape for being carried out by whole described conductor elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528966.8U CN204087907U (en) | 2014-09-15 | 2014-09-15 | Water resistant tree aluminium alloy conductor medium-pressure power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528966.8U CN204087907U (en) | 2014-09-15 | 2014-09-15 | Water resistant tree aluminium alloy conductor medium-pressure power cable |
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| Publication Number | Publication Date |
|---|---|
| CN204087907U true CN204087907U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420528966.8U Expired - Fee Related CN204087907U (en) | 2014-09-15 | 2014-09-15 | Water resistant tree aluminium alloy conductor medium-pressure power cable |
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| CN (1) | CN204087907U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355284A (en) * | 2015-12-09 | 2016-02-24 | 无锡市华美电缆有限公司 | Highly waterproof fireproof power cable |
| CN109148017A (en) * | 2018-08-22 | 2019-01-04 | 安徽明星电缆有限公司 | A kind of low release power cable of high fire-retardance |
-
2014
- 2014-09-15 CN CN201420528966.8U patent/CN204087907U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355284A (en) * | 2015-12-09 | 2016-02-24 | 无锡市华美电缆有限公司 | Highly waterproof fireproof power cable |
| CN109148017A (en) * | 2018-08-22 | 2019-01-04 | 安徽明星电缆有限公司 | A kind of low release power cable of high fire-retardance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20190915 |