CN206040293U - Insulating cable that blocks water of crosslinked polyethylene - Google Patents
Insulating cable that blocks water of crosslinked polyethylene Download PDFInfo
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- CN206040293U CN206040293U CN201620913325.3U CN201620913325U CN206040293U CN 206040293 U CN206040293 U CN 206040293U CN 201620913325 U CN201620913325 U CN 201620913325U CN 206040293 U CN206040293 U CN 206040293U
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Abstract
The utility model discloses an insulating cable that blocks water of crosslinked polyethylene belongs to cable technical field. This cable includes cable core and polyvinyl chloride sheath (9), crowded package formed in polyvinyl chloride sheath (9) after the cable core served as transposition beam forming in center by three sinle silks with triangle -shaped polyvinyl chloride packing (10), the sinle silk includes power core (2) and from interior to exterior cladding conductor shield (4) outside power core (2), crosslinked polyethylene insulating layer (1), insulation screen (5), semi -conductive water -blocking tapes inlayer (6), iron shielded layer (7) and semi -conductive water -blocking tapes outer (8), power core (2) are formed by the core wire conductor transposition that the multilayer was arranged according to concentric mode, fill between each layer core wire conductor block water cream with whitewashed combined material (3) block water. This cable has better blocking water nature, conductor resistance and water blocking material's resistance is very close not, the cable roundness reach more than 98%, and the cost is conventional to be indulged the package to block water the cable with low costs.
Description
Technical field
This utility model belongs to field of cable technology, more particularly to a kind of crosslinked polyetylene insulated water repellent electric cable, especially relates to
And a kind of crosslinked polyetylene insulated copper wire is dredged around shielding extrusion packing longitudinal water-blocking cable.
Background technology
Be laid in general cable moister underground more, and cable in manufacture, installation and running is likely to make
Moisture is penetrated in conductor and insulating barrier, and moisture can be gradually diffused in polymer, if polymer abundant saturation at high temperature, that
It is changed into supersaturation after the cooling period.After cooling, unnecessary water, will be led to cooling nuclear proliferation when the pressure for producing is more than marginal value
Body micropore ruptures, and in the presence of highfield, crosslinked polyetylene insulated layer can be produced " water tree ", accelerates the aging of cable, most
After cause cable breakdown, reduce cable life.Therefore blocking water for cable is one of basic guarantee of cable running safety.
The general SMIS that mode is heart yearn that blocks water adds waterproof paste, and other layers are indulged bag waterstop or dose water blocking yarn, the knot
Although structure it is crosslinked it is three-layer co-extruded after can reach IEC standard, due to being separated with waterstop or water blocking yarn between conductor, equivalent to
A wrapped layer insulating between per layer, monofilament loose contact between each layer of conductor, conductor resistance is than equally not stop water
Resistance is bigger than normal more.
In addition, after filling waterproofing rope wrapped waterstop after three core strandings, then plastic-aluminum synthetic layer is extruded outside which, the structure
Although waterproof requirement can be met, larger, the tightness degree Jing after waterstop is wrapped of waterproofing rope external diameter fluctuation in its cabling process
Differ, cause external diameter inconsistent.As external diameter is inconsistent, between plastic-aluminum synthetic layer and cable, space is larger, and moisture penetrates into probability
It is high.
The content of the invention
In order to solve the above problems, this utility model embodiment provides a kind of crosslinked polyetylene insulated water repellent electric cable, should
By waterproof paste and the powder composite material filling that blocks water, cable ensures that conductor resistance will not be bigger than normal more, ensured by the design of structure
Cable roundness and block-water effect.The technical scheme is as follows：
This utility model embodiment provides a kind of crosslinked polyetylene insulated water repellent electric cable, and the cable includes cable core and polychlorostyrene
Ethylene sheath 9, the cable core are extruded in poly- centered on triangle polrvinyl chloride packing 10 by three cores after stranded bunchy
Formed in vinyl chloride sheath 9, the core includes power wire core 2 and the conductor shielding being coated on outside power wire core 2 from the inside to the outside
Layer 4, crosslinked polyetylene insulated layer 1, insulation screen 5, semiconductor waterstop internal layer 6, metal screen layer 7 and semiconductor waterstop
Outer layer 8, the power wire core 2 are formed by the cored wire conductor that concentric manner is arranged is stranded by multilamellar, each layer cored wire conductor
Between filled with waterproof paste and block water powder composite material 3.
Wherein, the power wire core 2 in this utility model embodiment includes centrage, internal layer, secondary internal layer, secondary outer layer and outer
Layer, internal layer are 6, and secondary internal layer is 12, and secondary outer layer is 18, and outer layer is 24.
Wherein, the metal screen layer 7 in this utility model embodiment include from the inside to the outside dredge around shielding layer of copper wires and dredge
Around copper strip shielding layer.
The beneficial effect brought of technical scheme that this utility model embodiment is provided is：This utility model embodiment is provided
A kind of crosslinked polyetylene insulated water repellent electric cable, the cable have preferable water preventing ability；Its conductor resistance be not added with material water-proof material
Closely, rate bigger than normal is not more than 0.5% to resistance；Cable roundness reaches more than 98%；And the more conventional vertical bag water repellent electric cable of cost
Low cost.
Description of the drawings
Fig. 1 is the structural representation of the crosslinked polyetylene insulated water repellent electric cable that this utility model embodiment is provided.
In figure：1 crosslinked polyetylene insulated layer, 2 power wire cores, 3 waterproof pastes and the powder composite material that blocks water, 4 conductor shields,
5 insulation screens, 6 semiconductor waterstop internal layers, 7 metal screen layers, 8 semiconductor waterstop outer layers, 9 pvc sheaths, 10
Triangle polrvinyl chloride packing.
Specific embodiment
It is for making the purpose of this utility model, technical scheme and advantage clearer, new to this practicality below in conjunction with accompanying drawing
Type is described in further detail.
Referring to Fig. 1, this utility model embodiment provides a kind of crosslinked polyetylene insulated water repellent electric cable, and the cable includes cable
Core and pvc sheath 9；Wherein, cable core by three cores centered on triangle polrvinyl chloride packing 10 after stranded bunchy
It is extruded in pvc sheath 9 and is formed.Wherein, core includes power wire core 2 and is coated on outside power wire core 2 from the inside to the outside
Conductor shield 4, crosslinked polyetylene insulated layer 1, insulation screen 5, semiconductor waterstop internal layer 6, metal screen layer 7 and partly lead
Resistance hose jacket 8 etc..Wherein, power wire core 2 is formed by the cored wire conductor that concentric manner is arranged is stranded by multilamellar, each layer core
Filled with waterproof paste and the powder composite material 3 that blocks water between line conductor.
Specifically, it is first very thin between each layer cored wire conductor to apply one layer of waterproof paste, water-proofing powder is sprayed thereafter again, makes the resistance of drying
Pigment are uniformly adhered on waterproof paste surface, and so waterproof paste is adhered to by water-proofing powder, crosslinked three-layer co-extruded rear waterproof paste
Evaporation is notheated, dry water-proofing powder is adhered to by waterproof paste, be will not fall off；Its implementation is very simple, only need to be at each
A waterproof paste device and sprinkling water-proofing powder device is assembled between frame cage.Using waterproof paste and block water powder composite material 3, directly
Compared with the not water-blocking conductor of same structure, D.C. resistance rate bigger than normal is less than 0.5% to leakage resistance.
Wherein, above layers are required to meet national standard and industry standard.
In addition, similar with conventional longitudinal water-blocking cable before this cable metallic screens（Insulation shielding and metallic shield it
Between wrapped semiconductor waterstop）, stranding Shi Chu centers add a triangle polrvinyl chloride packing 10 outside, periphery without appoint
What is filled, and pvc sheath 9 is extruded by the way of extruding, and pvc sheathing compound is tightly embedded intp into cable core
Between, and one layer of semiconductor waterstop is with the addition of outside metallic shield, to prevent moisture from pvc sheath and metal screen
Penetrate between covering.This kind of structure stranding efficiency is greatly improved, extruded rear cable subcircular, good looking appearance, sheath and stranding three
There is no any gap between core, fully ensured that cable generally longitudinally water preventing ability.
Wherein, conductor shield 4, crosslinked polyetylene insulated layer 1 and insulation screen 5 are using three layers of extrusion way life simultaneously
Produce, it is ensured that requirement of the shelf depreciation value of cable less than standard, so as to improve the service life of cable.
Wherein, the power wire core 2 in this utility model embodiment is 5 layers, including centrage, internal layer, secondary internal layer, secondary outer layer
And outer layer, internal layer is 6, and secondary internal layer is 12, and secondary outer layer is 18, and outer layer is 24.Further, centrage, internal layer with
It is first very thin between secondary internal layer, secondary internal layer and secondary outer layer, secondary outer layer and outer layer to apply one layer of waterproof paste, water-proofing powder is sprayed thereafter again.
Wherein, the metal screen layer 7 in this utility model embodiment include from the inside to the outside dredge around shielding layer of copper wires and dredge
Around copper strip shielding layer.
Permeable experiment is carried out by GB/T12706-2008 standards to this crosslinked polyetylene insulated water repellent electric cable, sample carries out ten
Secondary heat cycles, heat cycles 8 hours each time, during whole experiment, sample two ends do not have moisture to ooze out, and sample is dissected
Afterwards, water about permeates 280mm along longitudinal two ends, and product water preventing ability is excellent.
In addition, Jing cost calculations, originally the more conventional vertical bag water repellent electric cable low cost of crosslinked polyetylene insulated water repellent electric cable, such as right
For tri- kinds of specifications of 3*50,3*150 and 3*300, two kinds of cables（The cable of normal cable and this patent）Unit price be respectively
12.28 ten thousand yuan/km and 11.84 ten thousand yuan/km, 30.37 ten thousand yuan/km and 29.65 ten thousand yuan/km and 57,680,000 yuan/km and 56.62 ten thousand
Unit/km.
This utility model embodiment provide a kind of crosslinked polyetylene insulated water repellent electric cable, the cable have preferably block water
Property；With the resistance for being not added with material water-proof material closely, rate bigger than normal is not more than 0.5% to its conductor resistance；Cable roundness reaches 98%
More than；And the more conventional vertical bag water repellent electric cable low cost of cost.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (3)
1. a kind of crosslinked polyetylene insulated water repellent electric cable, it is characterised in that including cable core and pvc sheath (9), the cable
Core is extruded in after stranded bunchy in pvc sheath (9) centered on triangle polrvinyl chloride packing (10) by three cores
Formed, the core includes power wire core (2) and is coated on the outer conductor shield (4) of power wire core (2), crosslinking from the inside to the outside
Polyethylene layer (1), insulation screen (5), semiconductor waterstop internal layer (6), metal screen layer (7) and semiconductor waterstop
Outer layer (8), power wire core (2) are formed by the cored wire conductor that concentric manner is arranged is stranded by multilamellar, each layer heart yearn
Filled with waterproof paste and the powder composite material (3) that blocks water between conductor.
2. crosslinked polyetylene insulated water repellent electric cable according to claim 1, it is characterised in that described power wire core (2) wrap
Centrage, internal layer, secondary internal layer, secondary outer layer and outer layer is included, internal layer is 6, and secondary internal layer is 12, and secondary outer layer is 18, and outer layer is
24.
3. crosslinked polyetylene insulated water repellent electric cable according to claim 1, it is characterised in that metal screen layer (7)
Including dredging around shielding layer of copper wires with thin around copper strip shielding layer from the inside to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620913325.3U CN206040293U (en) | 2016-08-22 | 2016-08-22 | Insulating cable that blocks water of crosslinked polyethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620913325.3U CN206040293U (en) | 2016-08-22 | 2016-08-22 | Insulating cable that blocks water of crosslinked polyethylene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206040293U true CN206040293U (en) | 2017-03-22 |
Family
ID=58305612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620913325.3U Expired - Fee Related CN206040293U (en) | 2016-08-22 | 2016-08-22 | Insulating cable that blocks water of crosslinked polyethylene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206040293U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188630A (en) * | 2018-09-26 | 2019-01-11 | 杭州富通通信技术股份有限公司 | Dry type Loose tube and its manufacturing method and manufacturing equipment |
| CN112271020A (en) * | 2020-11-03 | 2021-01-26 | 安徽电缆股份有限公司 | Control cable and preparation process thereof |
-
2016
- 2016-08-22 CN CN201620913325.3U patent/CN206040293U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188630A (en) * | 2018-09-26 | 2019-01-11 | 杭州富通通信技术股份有限公司 | Dry type Loose tube and its manufacturing method and manufacturing equipment |
| CN112271020A (en) * | 2020-11-03 | 2021-01-26 | 安徽电缆股份有限公司 | Control cable and preparation process thereof |
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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 |
Granted publication date: 20170322 Termination date: 20200822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |