CN208189287U - A kind of non magnetic armored type medium-pressure power cable - Google Patents
A kind of non magnetic armored type medium-pressure power cable Download PDFInfo
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- CN208189287U CN208189287U CN201820789877.7U CN201820789877U CN208189287U CN 208189287 U CN208189287 U CN 208189287U CN 201820789877 U CN201820789877 U CN 201820789877U CN 208189287 U CN208189287 U CN 208189287U
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Abstract
The utility model relates to a kind of non magnetic armored type medium-pressure power cables, including cable core, the structure of cable core are as follows: three cores that block water are twisted in a triangle, rounding is filled using fire-retardant fan-shaped packing in the gap of adjacent two cores that block water, tension strengthening core is equipped in three fire-retardant fan-shaped packings, glass fibre belt is surrounded with outside cable core, flame-proof polyethylene water-proof jacket layer is extruded with outside the glass fibre belt, it is aluminum-alloy wire armor outside flame-proof polyethylene water-proof jacket layer, wrapped high fire-retardance band outside the aluminum-alloy wire armor, outer jacket is extruded with outside high fire-retardance band, the every core that blocks water is successively arranged conductor from inside to outside, conductor semiconductive shielding layer, crosslinked polyetylene insulated layer, insulate semiconductive shielding layer, copper strip shielding layer, damp-proof layer and water blocking layer；Have many advantages, such as that waterproofness is strong, flame retardant property is good, high current-carrying capacity, light-weight and environmentally friendly, improves safety, stability and the economy of the operation of avenue medium-pressure power cable.
Description
Technical field
The utility model relates to field of cable technology, especially a kind of non magnetic armored type medium-pressure power cable.
Background technique
Urban agglomeration laying midium voltage cable in China's is fixedly arranged at greatly sewer both sides, and cable can be immersed when rainy season
In water, and the failures such as cable is short-circuit, overload easily cause fire, and the cable of drop larger area mostly uses lifting mode, to it
The pull resistance of sheathed structure proposes very high request, therefore the waterproofness of cable, anti-flammability current-carrying capacity and pull resistance are all to guarantee it
The essential condition of safe and stable operation.In the prior art, electricity of the block-water effect of pe sheath for long period of soaking in water
Cable is extremely limited；Using the sheathed structure of low-carbon zinc-coated wire, single-core cable is generally stainless steel structure of steel wire, multicore cable
For zinc-coated wire structure, when alternating current passes through, induced potential will be generated on metal mild steel wire armouring sheath, is generated simultaneously
Vortex and fever, are not only greatly reduced the rated current-carrying capacity of conductor, it is also possible to cable thermal breakdown be caused to cause great power failure thing
Therefore and it is big using steel wire armoured cable weight, laying difficulty is improved, laid down cost is increased.
Utility model content
The applicant provides in the structurally reasonable non magnetic armored type of one kind for the disadvantage in above-mentioned existing production technology
Piezoelectric forces cable has many advantages, such as good waterproof, flame retardant property, high current-carrying capacity, light-weight, environmentally friendly, while it is larger to be suitable for drop
Laying environment, to improve safety, stability and the cable laying of urban population intensive street medium-pressure power cable operation
Economy.
Technical solution used by the utility model is as follows:
A kind of non magnetic armored type medium-pressure power cable, including cable core, the structure of the cable core are as follows: three block water core at
Isosceles triangle is twisted, fills rounding using fire-retardant fan-shaped packing in the gap of adjacent two cores that block water, three fire-retardant sectors are filled out
It fills in item and is equipped with tension strengthening core, glass fibre belt is surrounded with outside the cable core, one layer of fire-retardant poly- second is extruded with outside the glass fibre belt
Alkene water-proof jacket layer, flame-proof polyethylene water-proof jacket layer are externally provided with aluminum-alloy wire armor, the aluminum-alloy wire armor it is outer around
Packet high fire-retardance band, the high fire-retardance band are extruded with outer jacket outside；
Every block water core from inside to outside successively include conductor, conductor semiconductive shielding layer, crosslinked polyetylene insulated layer, absolutely
Edge semiconductive shielding layer, copper strip shielding layer, damp-proof layer and water blocking layer.
The conductor is twisted using 8030 aluminium alloy wires, and the rounded structure of central core, every layer of every single line is at fan
Shape is twisted along the circumference of the circular configuration and forms one.
Crosslinked polyetylene insulated layer uses high-cleanness cross-linked polyethylene insulating material, and conductor semiconductive shielding layer, insulation are partly led
Shield layer uses ultra-smooth semiconductive shieldin material；The conductor semiconductive shielding layer, insulation semiconductive shielding layer and crosslinking are poly-
Ethylene insulating layer is using three-layer co-extruded.
The damp-proof layer uses double-sided insulation waterstop, is tightened with the wrapped mode of two superimposed in the copper strip shielding layer
On, Duplication >=20%.
The water blocking layer includes aluminium/plastic composite strip made of longitudinal wrap with a thickness of 0.25 or 0.3mm, and connector is pressed using electricity
Bucket plus conductive copper powder, which are overlapped, puts up thermofussion welding connection, aluminium/plastic composite strip overlapping widths >=10mm, extrudes on aluminium/plastic composite strip
There is the flame-proof polyethylene layer bonded with it.
The fire-retardant fan-shaped packing, which is extruded on tension strengthening core, to be integral with, fire-retardant sector packing with block water
Core is twisted integral, and fire-retardant sector packing uses low-smoke halide-free fireproof composite polyolefine material, oxygen index (OI) >=40%.
The aluminum-alloy wire armor and tension strengthening core are all made of non-magnetic aluminum-magnesium-silicon alloy bar and draw, and tension adds
Strong core is more non-magnetic aluminum-magnesium-silicon alloy wire lay configurations, and the tensile strength average value of every non-magnetic aluminum-magnesium-silicon alloy wire is
325N/mm2~350N/mm2, resistivity ≯ 32.840 × 10-9 Ω m at 20 DEG C, density is 2.703~2.704g/cm3。
The high fire-retardance band is halogen-free high flame-retardant band, is successively overlapped using four layers around the periphery of aluminum-alloy wire armor
And it tightens, Duplication >=20%.
The outer jacket is extruded using low-smoke halide-free fireproof composite polyolefine material, oxygen index (OI) >=45%.
The beneficial effects of the utility model are as follows:
1, the utility model is compact-sized, reasonable, and cable core is twisted in a triangle by three cores that block water, and every blocks water
Core adjacent segment makes one, fire-retardant sector using the fire-retardant fan-shaped packing filling rounding for including tension strengthening core
Packing and the every core contact surface that blocks water are big, enhance the frictional force to block water between core and packing, improve cable knot
The stability of structure.
2, the tension strengthening core of the utility model and aluminum-alloy wire armor use non-magnetic aluminum-magnesium-silicon alloy wire, make cable
Tensile strength up to 2 times of its self weight, due to alloy wire be it is nonmagnetic, with reducing cable using compared with low-carbon galvanized steel
The metal swirl of generation is lost, and the current-carrying capacity of cable can be made to improve 10%-30%, and year-on-year copper cable weight can reduce 40%, reduces
Laying work difficulty and laid down cost.
3, the conductor of the utility model presses into sector structure using aluminium alloy wire is twisted, and the tightening factor of conductor is reachable
93% or more, compared with the circular configuration of same nominal area of section, the outside diameter of cable can reduce 5%, the cost compared with using copper
30% can be reduced.
4, the water blocking layer of the utility model is longitudinal wrap aluminium/plastic composite strip and the combination for extruding flame-proof polyethylene layer, utilizes gold
Belong to the good feature of compactness, which can effectively block water, in addition, damp-proof layer uses double-sided insulation waterstop, waterstop meets water
It is expanded after absorption, moisture can be effectively prevent to permeate along cable core gap and deteriorated, the reliability of cable is improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of the core that blocks water of the utility model.
Wherein: 1, block water core；2, fire-retardant fan-shaped packing；3, glass fibre belt；4, flame-proof polyethylene water-proof jacket layer；5, aluminium
Alloy wire armor；6, high fire-retardance band；7, outer jacket；8, tension strengthening core；11, conductor；12, conductor semiconductive shielding layer；13,
Crosslinked polyetylene insulated layer；14, insulate semiconductive shielding layer；15, copper strip shielding layer；16, damp-proof layer；17, water blocking layer.
Specific embodiment
With reference to the accompanying drawing, illustrate specific embodiment of the present utility model.
As shown in Figure 1, the non magnetic armored type medium-pressure power cable of the present embodiment, including cable core, the structure of cable core are as follows: three
The root core 1 that blocks water is twisted in a triangle, fills rounding using fire-retardant fan-shaped packing 2 in the gap of adjacent two cores 1 that block water,
It is equipped with tension strengthening core 8 in three fire-retardant fan-shaped packings 2, glass fibre belt 3 is surrounded with outside cable core, one is extruded with outside glass fibre belt 3
Layer flame-proof polyethylene water-proof jacket layer 4, flame-proof polyethylene water-proof jacket layer 4 is externally provided with aluminum-alloy wire armor 5, aluminum-alloy wire armour
Wrapped high fire-retardance band 6 outside layer 5 is filled, outer jacket 7 is extruded with outside high fire-retardance band 6；
As shown in Fig. 2, the every core 1 that blocks water successively includes conductor 11, conductor semiconductive shielding layer 12, crosslinking from inside to outside
Polyethylene layer 13, insulation semiconductive shielding layer 14, copper strip shielding layer 15, damp-proof layer 16 and water blocking layer 17.
The conductor 11 of the present embodiment is twisted using 8030 aluminium alloy wires, the rounded structure of central core, and every layer every
Single line is twisted along the circumference of circular configuration at sector and forms one.Stranded conductor 11 needs to anneal, and its material composition meets
The regulation of ASTM--B800-2005 (the electrical standard criterion for using annealing and 8000 series alloys line of average tempering).
Crosslinked polyetylene insulated layer 13 uses high-cleanness crosslinked polyethylene (XLPE) Insulation Material, conductor semiconductive shielding layer
12, insulation semiconductive shielding layer 14 uses ultra-smooth semiconductive shieldin material；Conductor semiconductive shielding layer 12, insulation semi-conductive screen
Layer 14 and crosslinked polyetylene insulated layer 13 are using three-layer co-extruded.
Damp-proof layer 16 is tightened with the wrapped mode of two superimposed in copper strip shielding layer 15 using white double-sided insulation waterstop
On, Duplication >=20%, after double-sided insulation waterstop outer layer can be prevented damaged, moisture is permeated to cable core gap to be deteriorated.
Water blocking layer 17 includes aluminium/plastic composite strip made of longitudinal wrap with a thickness of 0.25 or 0.3mm, and connector uses electric iron
Conductive copper powder overlapping is added to put up thermofussion welding connection, aluminium/plastic composite strip overlapping widths >=10mm are extruded on aluminium/plastic composite strip
The flame-proof polyethylene layer bonded with it has the characteristics that compactness is good using metal, and water blocking layer 17 constitutes highly effective block water
Barrier.
Fire-retardant sector packing 2 is extruded on tension strengthening core 8 and is integral with, fire-retardant sector packing 2 with block water
Core 1 is twisted integral, this structure increases contact surface between the two, improves frictional force, enhances the stability of cable；Resistance
It fires fan-shaped packing 2 and uses low-smoke halide-free fireproof composite polyolefine material, oxygen index (OI) >=40% enhances the flame retardant property of cable.
Glass fibre belt 3 outside cable core, promotes the globality of cable core using layer glass flame-retardant fiber band；Outside glass fibre belt 3
It is extruded with one layer of flame-proof polyethylene water-proof jacket layer 4, further increases cable waterproof performance.
Aluminum-alloy wire armor 5 and tension strengthening core 8 are all made of non-magnetic aluminum-magnesium-silicon alloy bar and draw, and tension is reinforced
Core 8 is more non-magnetic aluminum-magnesium-silicon alloy wire lay configurations, and specification size can be adjusted according to single-core cable design requirement,
And tensile strength is 2 times of cable self weight, the tensile strength average value of every non-magnetic aluminum-magnesium-silicon alloy wire is 325N/mm2~
350N/mm2, resistivity ≯ 32.840 × 10 at 20 DEG C-9Ω m, density are 2.703~2.704g/cm3；Alloy wire is non-magnetic
Property, the metal swirl loss of cable generation is reduced compared with using low-carbon galvanized steel, and the current-carrying capacity of cable can be made to improve
10%-30%, year-on-year copper cable weight can reduce 40%, reduce laying work difficulty and laid down cost, can be suitably used for drop compared with
Big laying environment.
High fire-retardance band 6 is halogen-free high flame-retardant band, is successively overlapped around the periphery of aluminum-alloy wire armor 5 simultaneously using four layers
It tightens, Duplication >=20%.
Outer jacket 7 is extruded using black low-smoke halide-free fireproof composite polyolefine material, oxygen index (OI) >=45%, in raw material
Add nontoxic to the human body and environment chemical addition agent can be used for resisting cold, is termite-proof etc..
Above description is the explanation to the utility model, is not the restriction to utility model, defined by the utility model
Range is within the protection scope of the utility model referring to claim, can make any type of modification.
Claims (9)
1. a kind of non magnetic armored type medium-pressure power cable, including cable core, it is characterised in that: the structure of the cable core are as follows: three
The core (1) that blocks water is twisted in a triangle, is filled in the gap of adjacent two cores that block water (1) using fire-retardant fan-shaped packing (2)
Rounding, three fire-retardant fan-shaped packings (2) are interior to be equipped with tension strengthening core (8), and glass fibre belt (3), institute are surrounded with outside the cable core
It states and is extruded with one layer of flame-proof polyethylene water-proof jacket layer (4) outside glass fibre belt (3), flame-proof polyethylene water-proof jacket layer (4) is externally provided with
Aluminum-alloy wire armor (5), the aluminum-alloy wire armor (5) outside squeeze outside by wrapped high fire-retardance band (6), the high fire-retardance band (6)
It is surrounded by outer jacket (7)；
The every core that blocks water (1) is successively exhausted including conductor (11), conductor semiconductive shielding layer (12), crosslinked polyethylene from inside to outside
Edge layer (13), insulation semiconductive shielding layer (14), copper strip shielding layer (15), damp-proof layer (16) and water blocking layer (17).
2. a kind of non magnetic armored type medium-pressure power cable as described in claim 1, it is characterised in that: the conductor (11) is adopted
It is twisted with 8030 aluminium alloy wires, the rounded structure of central core, every layer of every single line is at sector along the circular configuration
Circumference is twisted to form one.
3. a kind of non magnetic armored type medium-pressure power cable as described in claim 1, it is characterised in that: crosslinked polyetylene insulated
Layer (13) uses high-cleanness cross-linked polyethylene insulating material, and conductor semiconductive shielding layer (12), insulation semiconductive shielding layer (14) are adopted
With ultra-smooth semiconductive shieldin material；The conductor semiconductive shielding layer (12), insulation semiconductive shielding layer (14) and the poly- second of crosslinking
Alkene insulating layer (13) is using three-layer co-extruded.
4. a kind of non magnetic armored type medium-pressure power cable as described in claim 1, it is characterised in that: the damp-proof layer (16)
Using double-sided insulation waterstop, tightened on the copper strip shielding layer (15) with the wrapped mode of two superimposed, Duplication >=
20%.
5. a kind of non magnetic armored type medium-pressure power cable as described in claim 1, it is characterised in that: the water blocking layer (17)
Including aluminium/plastic composite strip made of longitudinal wrap with a thickness of 0.25 or 0.3mm, connector adds conductive copper powder overlapping to take using electric iron
Lid thermofussion welding connection, aluminium/plastic composite strip overlapping widths >=10mm, be extruded on aluminium/plastic composite strip bonded with it is fire-retardant poly-
Pvdf layer.
6. a kind of non magnetic armored type medium-pressure power cable as described in claim 1, it is characterised in that: the fire-retardant sector is filled out
It fills item (2) and is extruded on tension strengthening core (8) and be integral with, fire-retardant sector packing (2) is twisted into the core that blocks water (1)
One, fire-retardant sector packing (2) use low-smoke halide-free fireproof composite polyolefine material, oxygen index (OI) >=40%.
7. a kind of non magnetic armored type medium-pressure power cable as described in claim 1, it is characterised in that: the aluminum-alloy wire armour
Dress layer (5) and tension strengthening core (8) are all made of non-magnetic aluminum-magnesium-silicon alloy bar and draw, and tension strengthening core (8) is more non-
Magnetic aluminum-magnesium-silicon alloy wire lay configuration, the tensile strength average value of every non-magnetic aluminum-magnesium-silicon alloy wire are 325N/mm2~
350N/mm2, resistivity ≯ 32.840 × 10 at 20 DEG C-9Ω m, density are 2.703~2.704g/cm3。
8. a kind of non magnetic armored type medium-pressure power cable as described in claim 1, it is characterised in that: the high fire-retardance band
It (6) is halogen-free high flame-retardant band, the periphery being successively overlapped using four layers around aluminum-alloy wire armor (5) is simultaneously tightened, and is overlapped
Rate >=20%.
9. a kind of non magnetic armored type medium-pressure power cable as described in claim 1, it is characterised in that: the outer jacket (7)
It is extruded using low-smoke halide-free fireproof composite polyolefine material, oxygen index (OI) >=45%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820789877.7U CN208189287U (en) | 2018-05-24 | 2018-05-24 | A kind of non magnetic armored type medium-pressure power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820789877.7U CN208189287U (en) | 2018-05-24 | 2018-05-24 | A kind of non magnetic armored type medium-pressure power cable |
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| CN208189287U true CN208189287U (en) | 2018-12-04 |
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| CN201820789877.7U Expired - Fee Related CN208189287U (en) | 2018-05-24 | 2018-05-24 | A kind of non magnetic armored type medium-pressure power cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830337A (en) * | 2019-03-30 | 2019-05-31 | 兰州众邦电线电缆集团有限公司 | Three core overhead insulated cables and preparation method thereof are pressed in tension waterproof ice snow type |
| CN110578490A (en) * | 2019-09-27 | 2019-12-17 | 中煤科工集团西安研究院有限公司 | electromagnetic fishing system for large-diameter engineering well and special cable thereof |
| CN111816347A (en) * | 2020-07-17 | 2020-10-23 | 天长市徽宁电器仪表厂 | 0.6/1KV salt-fog-resistant control cable and manufacturing process |
-
2018
- 2018-05-24 CN CN201820789877.7U patent/CN208189287U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830337A (en) * | 2019-03-30 | 2019-05-31 | 兰州众邦电线电缆集团有限公司 | Three core overhead insulated cables and preparation method thereof are pressed in tension waterproof ice snow type |
| CN110578490A (en) * | 2019-09-27 | 2019-12-17 | 中煤科工集团西安研究院有限公司 | electromagnetic fishing system for large-diameter engineering well and special cable thereof |
| CN111816347A (en) * | 2020-07-17 | 2020-10-23 | 天长市徽宁电器仪表厂 | 0.6/1KV salt-fog-resistant control cable and manufacturing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20181204 |