CN102982878A - Semi-conductive waterproof cable - Google Patents
Semi-conductive waterproof cable Download PDFInfo
- Publication number
- CN102982878A CN102982878A CN2012104869996A CN201210486999A CN102982878A CN 102982878 A CN102982878 A CN 102982878A CN 2012104869996 A CN2012104869996 A CN 2012104869996A CN 201210486999 A CN201210486999 A CN 201210486999A CN 102982878 A CN102982878 A CN 102982878A
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- China
- Prior art keywords
- water
- layer
- semi
- dilatant
- proof cable
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention provides a semi-conductive waterproof cable which comprises a conductor, a first semi-conductive layer, an insulation layer, a second semi-conductive layer, a buffering expansion layer, a metal shielding layer and an outer protective layer from inside to outside in sequence. The second semi-conductive layer is of a dense structure, the buffering expansion layer is made of polymeric materials mixed with water soluble expansion matters, the expansion degree of the buffering expansion layer is 10-300%, and the thickness of the buffering expansion layer is 0.2-4mm. The semi-conductive waterproof cable has good waterproof performance.
Description
Technical field
The present invention relates to the cable technology field, relate in particular to a kind of semiconductive water-proof cable.
Background technology
In power transmission cable, the application of semiconductive cable is very extensive, usually, is provided with inside and outside two semi-conductive layers in the outside of the conductor of semiconductive cable and the insulating barrier between two semi-conductive layers forms.In actual applications, the semiconductive cable generally is exposed in the outdoor environment, therefore, requires the semiconductive cable to have good water resistance.In the prior art, in order to solve the waterproof problem of semiconductive cable, generally the skin at cable is provided with metal screen layer, adopts sheet metal and welding to form the waterproof construction of cable.But in production, installation and the actual use procedure of semiconductive cable, metal screen layer usually crack or perforation can occur, thereby the moisture in the external environment or water can be penetrated into cable inside, broken insulation of changing cable.Therefore, provide a kind of semiconductive water-proof cable, it has good water resistance, is the technical issues that need to address in the prior art.
Summary of the invention
Problem for prior art exists the present invention proposes a kind of semiconductive water-proof cable, and it has good water resistance.
For reaching this purpose, the present invention by the following technical solutions:
A kind of semiconductive water-proof cable; be followed successively by from inside to outside conductor, the first semi-conductive layer, insulating barrier, the second semi-conductive layer, buffering expanding layer, metal screen layer and external protection; the second semi-conductive layer is the semi-conductive layer of compact structure; the buffering expanding layer is that the polymeric material that is mixed with water-soluble dilatant is made; the dilation of buffering expanding layer is 10%-300%, and the thickness of buffering expanding layer is 0.2-4mm.
In a preferred embodiment, polymeric material is olefin polymer or ethylenic copolymer or propylene copolymer.
In a preferred embodiment, be mixed with carbon black in the described polymeric material.
In a preferred embodiment, the percentage by weight of carbon black is 2%-60%.
In a preferred embodiment, water-soluble dilatant is that average grain diameter is the powder of 10-200 micron in the polymeric material.
In a preferred embodiment, the percentage by weight of water-soluble dilatant is 55%-70%.
In a preferred embodiment, water-soluble dilatant is the copolymer that has hydrophilic radical on the polymeric chain in the polymeric material.
In a preferred embodiment, the percentage by weight of water-soluble dilatant is 15%-50%.
Based on disclosing of above technical scheme, the present invention possesses following beneficial effect:
In the semiconductive water-proof cable that the present invention proposes, between metal screen layer and the second semi-conductive layer, be provided with the buffering expanding layer, the buffering expanding layer is that the polymeric material that is mixed with water-soluble dilatant is made, after the moisture in the external environment or water enter metal screen layer, water-soluble dilatant in this buffering expanding layer can expand, thereby effectively stop moisture or moisture to enter cable inside, have good water resistance.
Description of drawings
Fig. 1 is the cross-sectional view of a kind of semiconductive water-proof cable in the prior art.
Embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing and by embodiment:
The cross-sectional view of a kind of semiconductive water-proof cable that proposes for the present invention as shown in Figure 1.
With reference to the accompanying drawings, a kind of semiconductive water-proof cable that the present invention proposes, comprise conductor 1, the first semi-conductive layer 2, insulating barrier 3, the second semi-conductive layer 4, buffering expanding layer 5, metal screen layer 6 and external protection 7, wherein, conductor forms by multiple conducting wires is stranded, wrap up the first semi-conductive layer 2 in the conductor periphery, at the first semiconductive periphery wrap insulate layer 3, wrap up the second semi-conductive layer 4 in insulating barrier 3 peripheries, in the second semiconductor layer periphery parcel buffering expanding layer 5, at buffering expanding layer 5 periphery coated metal screens 6, at metal screen layer 6 peripheries parcel external protection 7; Wherein, the second semi-conductive layer 4 is the semi-conductive layer of compact structure, and buffering expanding layer 5 is made for the polymeric material that is mixed with water-soluble dilatant, and the dilation of buffering expanding layer 5 is 10%-300%, and the thickness of buffering expanding layer 5 is 0.2-4mm.
In a preferred embodiment, in the above-mentioned buffering expanding layer, its polymeric material is olefin polymer or ethylenic copolymer or propylene copolymer, and is mixed with carbon black in polymeric material, and the percentage by weight of carbon black is 2%-60%.
In a preferred embodiment, in the above-mentioned polymeric material, water-soluble dilatant is that average grain diameter is the powder of 10-200 micron, and preferably its average grain diameter is the 50-150 micron, and the percentage by weight of water-soluble dilatant is 55%-70%.
In a preferred embodiment, in the above-mentioned polymeric material, water-soluble dilatant is the copolymer that has hydrophilic radical on the polymeric chain, and its hydrophilic effect is outstanding, and the percentage by weight of its water-soluble dilatant is 15%-50%.
Among the present invention, between metal screen layer and the second semi-conductive layer, be provided with the buffering expanding layer at the semiconductive water-proof cable, the buffering expanding layer is that the polymeric material that is mixed with water-soluble dilatant is made, after the moisture in the external environment or water enter metal screen layer, water-soluble dilatant in this buffering expanding layer can expand, thereby effectively stop moisture or moisture to enter cable inside, have good water resistance.
The above has carried out exemplary description to the present invention by reference to the accompanying drawings; obvious realization of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the method design of invention and the various improvement that technical scheme is carried out; or directly apply to other occasion without improving the design that will invent and technical scheme, all in protection scope of the present invention.
Claims (8)
1. semiconductive water-proof cable; it is characterized in that; be followed successively by from inside to outside conductor (1), the first semi-conductive layer (2), insulating barrier (3), the second semi-conductive layer (4), buffering expanding layer (5), metal screen layer (6) and external protection (7); the second semi-conductive layer (4) is the semi-conductive layer of compact structure; buffering expanding layer (5) is made for the polymeric material that is mixed with water-soluble dilatant; the dilation of buffering expanding layer (5) is 10%-300%, and the thickness of buffering expanding layer (5) is 0.2-4mm.
2. semiconductive water-proof cable according to claim 1 is characterized in that, polymeric material is olefin polymer or ethylenic copolymer or propylene copolymer.
3. semiconductive water-proof cable according to claim 2 is characterized in that, is mixed with carbon black in the described polymeric material.
4. semiconductive water-proof cable according to claim 3 is characterized in that, the percentage by weight of carbon black is 2%-60%.
5. each described semiconductive water-proof cable in 4 according to claim 1 is characterized in that water-soluble dilatant is that average grain diameter is the powder of 10-200 micron in the polymeric material.
6. semiconductive water-proof cable according to claim 5 is characterized in that, the percentage by weight of water-soluble dilatant is 55%-70%.
7. each described semiconductive water-proof cable in 4 according to claim 1 is characterized in that water-soluble dilatant is the copolymer that has hydrophilic radical on the polymeric chain in the polymeric material.
8. semiconductive water-proof cable according to claim 7 is characterized in that, the percentage by weight of water-soluble dilatant is 15%-50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104869996A CN102982878A (en) | 2012-11-26 | 2012-11-26 | Semi-conductive waterproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104869996A CN102982878A (en) | 2012-11-26 | 2012-11-26 | Semi-conductive waterproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102982878A true CN102982878A (en) | 2013-03-20 |
Family
ID=47856774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104869996A Pending CN102982878A (en) | 2012-11-26 | 2012-11-26 | Semi-conductive waterproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102982878A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105989918A (en) * | 2015-01-27 | 2016-10-05 | 上海新益电力线路器材有限公司 | Self-repairing cable |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5281757A (en) * | 1992-08-25 | 1994-01-25 | Pirelli Cable Corporation | Multi-layer power cable with metal sheath free to move relative to adjacent layers |
| CN1306668A (en) * | 1997-12-22 | 2001-08-01 | 皮雷利卡维系统有限公司 | Electrical cable having semiconductive water-blocking layer |
| CN201698817U (en) * | 2010-04-14 | 2011-01-05 | 无锡市长城电线电缆有限公司 | Power cable |
-
2012
- 2012-11-26 CN CN2012104869996A patent/CN102982878A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5281757A (en) * | 1992-08-25 | 1994-01-25 | Pirelli Cable Corporation | Multi-layer power cable with metal sheath free to move relative to adjacent layers |
| CN1306668A (en) * | 1997-12-22 | 2001-08-01 | 皮雷利卡维系统有限公司 | Electrical cable having semiconductive water-blocking layer |
| CN201698817U (en) * | 2010-04-14 | 2011-01-05 | 无锡市长城电线电缆有限公司 | Power cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105989918A (en) * | 2015-01-27 | 2016-10-05 | 上海新益电力线路器材有限公司 | Self-repairing cable |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |