CN203839116U - Three-core medium-voltage cable having water resistance and water tree resistance - Google Patents
Three-core medium-voltage cable having water resistance and water tree resistance Download PDFInfo
- Publication number
- CN203839116U CN203839116U CN201420165080.1U CN201420165080U CN203839116U CN 203839116 U CN203839116 U CN 203839116U CN 201420165080 U CN201420165080 U CN 201420165080U CN 203839116 U CN203839116 U CN 203839116U
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- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 240000005572 Syzygium cordatum Species 0.000 title claims abstract description 9
- 235000006650 Syzygium cordatum Nutrition 0.000 title claims abstract description 9
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 230000004888 barrier function Effects 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000004078 waterproofing Methods 0.000 claims description 6
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model relates to a three-core medium-voltage cable having water resistance and water tree resistance. The three-core medium-voltage cable of the utility model adopts the following technical scheme that the three-core medium-voltage cable having water resistance and water tree resistance comprises a cable core (11), the outer side of the cable core (11) is successively provided with a 2# water-resisting wrapping layer (8) and an outer sheath (9), the cable core (11) is formed by stranding three insulating wire cores (10) and a water-resisting rope (7); and each insulating wire core (10) is composed of a conductor (1), a conductor shielding layer (2), an insulating layer (3), an insulating shielding layer (4), a 1# water-resisting wrapping layer (5) and a metal shielding layer (6). By adopting the technical scheme, advantages of high water resistance and high water tree resistance can be realized.
Description
Technical field
The utility model relates to a kind of medium-pressure power cable, and particularly a kind of utilization three core medium-pressure power cables of water resistant tree structure that block water, belong to cable application technical field.
Background technology
In recent years, the user of especially external power cable, to the longitudinal water-blocking structure of cable require increasing.At home, in the cable special circuit that power cable is generally all laid in groove or pipeline., external power cable is directly laid in underground, is called for short " direct burial lays ", so cable is directly subject to the effect of external force, and suffers public's fault to cause that the danger of wound is very large.
Due to this situation of laying of external power cable, so the water blocking layer constructions of cable such as the metallic sheath of great majority employing mechanical protection and a resistance effect or metal-plastic tapes., even in such cable, when occurring wound accident or insulating impaired time, water will immerse cable inside from injury region.To the gap diffusion of cable inside, make to grow very much one section of cable and can not use due to immersion along the longitudinal.
Chinese patent notification number CN201222378Y openly has the medium-pressure power cable of water resistant tree property, its agent structure is an insulated wire cores, this insulated wire cores is comprised of conductor, conductor shield, insulating barrier, insulation screen, and insulated wire cores is established copper strips metal screen layer, water blocking layer and oversheath outward successively.Its water resistant tree property structure cannot be applicable to existing three core medium-pressure power cables, and the conductor shield in above-mentioned document, insulating barrier, insulation screen all use special substance just to have water resistant tree property.Separately, the medium-pressure power cable of three-core structure is the common structure in medium-pressure power cable, and it has irreplaceability.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and a kind of Novel medium voltage cable is provided, and it is three-core structure, and has high water resistance, high water resistant tree property.
For realizing above-mentioned technical purpose, the utility model is by the following technical solutions: a kind of three core midium voltage cables with the water resistant of blocking water tree property, it comprises cable core, and cable core is provided with 2# block water lapping layer and oversheath outward successively, wherein: described cable core is by three insulated wire cores and waterproofing rope is stranded forms; Every insulated wire cores consists of block water lapping layer and metal screen layer of conductor, conductor shield, insulating barrier, insulation screen, 1#, three-layer co-extruded conductor shield, insulating barrier and insulation screen on conductor, insulation screen is established 1# block water lapping layer and metal screen layer outward successively.
Further, described metal screen layer is shielding layer of copper wires.
Adopt after technique scheme, the utlity model has following beneficial effect:
(1) three insulated wire cores and waterproofing rope are twisted into cable core, make whole power cable have high water resistance, high water resistant tree property, and three-core structure, can be widely used in medium-pressure power cable.
(2) in every insulated wire cores, all establish metal screen layer, particularly preferred shielding layer of copper wires, the metal screen layer that improves three core medium-pressure power cables transmits the ability of short circuit current.
(3) 1# lapping layer and the 2# lapping layer that blocks water that blocks water coordinates, guarantee that shielding layer of copper wires can be embedded into lapping layer inside, can effectively reduce and dredge around copper wire gap, prevent that the moisture that immerses cable inside is along dredging around copper wire interstitial diffusion, improve water preventing ability and water resistant tree property.
(4) two lapping layers that block water of integrated use, shielding layer of copper wires, waterproofing rope, so, when using conductor shield, insulating barrier, the insulation screen of common material, cable still has longitudinal water-blocking performance, when cable cover(ing) has damage, water enters apart from little along cable axial direction, reduces to change cable cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, conductor, 2, conductor shield, 3, insulating barrier, 4, insulation screen, 5, the 1# lapping layer that blocks water, 6, metal screen layer, 7, fill, 8, the 2# lapping layer that blocks water, 9, oversheath, 10, insulated wire cores, 11, cable core.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Embodiment
As shown in Figure 1, a kind of three core midium voltage cables with the water resistant of blocking water tree property, it comprises cable core 11, and cable core 11 is outer is provided with 2# block water lapping layer 8 and oversheath 9 successively, and oversheath 9 can be plastic sheath, wherein:
Cable core 11 is by three insulated wire cores 10 and waterproofing rope 7 is stranded forms;
Every insulated wire cores 10 consists of block water lapping layer 5 and metal screen layer 6 of conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4,1#, and, three-layer co-extruded conductor shield 2, insulating barrier 3 and insulation screen 4 on conductor 1, insulation screen 4 is outer establishes 1# block water lapping layer 5 and metal screen layer 6 successively.
The preferred shielding layer of copper wires of aforementioned metal screen 6.
So, every insulated wire cores 10 all comprises 1# block water lapping layer 5 and metal screen layer 6, and whole cable core 11 is outer is provided with 2# block water lapping layer 8 and oversheath 9.
The medium-pressure power cable that adopts said structure, has three-core structure, can be widely used in medium-pressure power cable.Three insulated wire cores and waterproofing rope are twisted into cable core, make whole power cable have high water resistance, high water resistant tree property.1# lapping layer and the 2# lapping layer that blocks water that blocks water coordinates, and guarantees that shielding layer of copper wires can be embedded into lapping layer inside, can effectively reduce and dredge around copper wire gap, prevents that the moisture that immerses cable inside is along dredging around copper wire interstitial diffusion, improves water preventing ability and water resistant tree property.
The utility model is not limited to above-described embodiment, and the technical scheme that all employings are equal to or equivalence replacement forms all falls into the protection range that the utility model requires.
Claims (2)
1. three core midium voltage cables with the water resistant of blocking water tree property, it comprises cable core (11), cable core (11) is outer is provided with 2# block water lapping layer (8) and oversheath (9) successively, it is characterized in that:
Described cable core (11) is by three insulated wire cores (10) and stranded the forming of waterproofing rope (7);
Every insulated wire cores (10) consists of block water lapping layer (5) and metal screen layer (6) of conductor (1), conductor shield (2), insulating barrier (3), insulation screen (4), 1#, conductor (1) upper three-layer co-extruded conductor shield (2), insulating barrier (3) and insulation screen (4), insulation screen (4) is established 1# block water lapping layer (5) and metal screen layer (6) outward successively.
2. the three core midium voltage cables according to claim 1 with the water resistant of blocking water tree property, is characterized in that: described metal screen layer (6) is shielding layer of copper wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165080.1U CN203839116U (en) | 2014-04-04 | 2014-04-04 | Three-core medium-voltage cable having water resistance and water tree resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165080.1U CN203839116U (en) | 2014-04-04 | 2014-04-04 | Three-core medium-voltage cable having water resistance and water tree resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839116U true CN203839116U (en) | 2014-09-17 |
Family
ID=51516928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420165080.1U Expired - Lifetime CN203839116U (en) | 2014-04-04 | 2014-04-04 | Three-core medium-voltage cable having water resistance and water tree resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981338A (en) * | 2017-05-11 | 2017-07-25 | 成都兰腾科技有限公司 | A kind of high-effective water-proof power cable |
-
2014
- 2014-04-04 CN CN201420165080.1U patent/CN203839116U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981338A (en) * | 2017-05-11 | 2017-07-25 | 成都兰腾科技有限公司 | A kind of high-effective water-proof power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
|
| CX01 | Expiry of patent term |