CN204204495U - A kind of water-resistant power cable - Google Patents
A kind of water-resistant power cable Download PDFInfo
- Publication number
- CN204204495U CN204204495U CN201420472209.3U CN201420472209U CN204204495U CN 204204495 U CN204204495 U CN 204204495U CN 201420472209 U CN201420472209 U CN 201420472209U CN 204204495 U CN204204495 U CN 204204495U
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- power cable
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Abstract
The utility model discloses a kind of water-resistant power cable, comprise four cores; Wherein the cross section of three cores forms an annulus just; Another root core cross section is circular; The rounded core in cross section is positioned at the cavity of the annular of other three cores composition; The outside of the core that cross section is rounded sets gradually conductor shield, insulating barrier, insulation screen from inside to outside; The outside that cross section forms three cores of an annulus just sets gradually woven shield, copper strip shielding layer, water blocking layer, restrictive coating from inside to outside.Space availability ratio between power cable core of the present utility model and core is very high, and the line of the more similar cable of whole cable is through smaller, and waterproof effect is fine.
Description
Technical field
The utility model relates to power cable technical field, is specifically related to a kind of power cable with refractory material.
Background technology
Along with the fast development of national economy, as the consumption of the aortal power cable of national economy and the scope of application increasing.In power circuit, the proportion shared by power cable increases just gradually.Power cable is in order to transmission and the cable product distributing high-power power in the basic routing line of electric power system, comprising 1-500KV and above various electric pressure, and a kind of water-resistant power cable of various insulation.
Power cable is the cable for transmitting and distribute electric energy.Be usually used in Urban Underground electrical network, the lead line in power station, the in-line power of industrial and mining enterprises and cross river, excessively extra large submarine transmission line.In general, the basic structure of power cable is made up of core (conductor), insulating barrier, screen and protective layer four part.Core is the current-carrying part of power cable, is used for transmission of electric energy, is the major part of power cable.Insulating barrier is isolated from each other between core and the earth and out of phase core on electrically, and ensureing power delivery, is indispensable part in power cable structure.Screen, because the current ratio that electric power cable passes through is comparatively large, can produce magnetic field around electric current, in order to not affect other element, and can this electromagnetic-field-shielded in cable so add screen.The effect of protective layer is protection power cable from the intrusion of introduced contaminants and moisture, and prevents external force from directly damaging power cable.
Existing power cable core and the space availability ratio between core be very low, and comparing of causing power cable to do is thick, and the waterproof effect of a lot of power cable is not fine.
Utility model content
The technical problems to be solved in the utility model: existing power cable core and the space availability ratio between core be very low, and comparing of causing power cable to do is thick, and the waterproof effect of a lot of power cable is not fine.
In order to solve above technical problem, the technical solution of the utility model is as follows: a kind of water-resistant power cable, comprises four cores; Wherein the cross section of three cores forms an annulus just; Another root core cross section is circular; The rounded core in cross section is positioned at the cavity of the annular of other three cores composition; The outside of the core that cross section is rounded sets gradually conductor shield, insulating barrier, insulation screen from inside to outside; The outside that cross section forms three cores of an annulus just sets gradually woven shield, copper strip shielding layer, water blocking layer, restrictive coating from inside to outside.
Further, the cross-sectional sizes that described cross section forms three cores of an annulus is just identical.
Further, described water blocking layer adopts the good foamed material of water absorption to make.
Compared with prior art, the beneficial effects of the utility model: the space availability ratio between power cable core of the present utility model and core is very high, the line of the more similar cable of whole cable is through smaller, and waterproof effect is fine.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1 is core; 2 is conductor shields; 3 is insulating barriers; 4 is insulation screens; 5 is cores; 6 is woven shields; 7 is copper strip shielding layers; 8 is water blocking layers; 9 is restrictive coatings.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment: a kind of water-resistant power cable, comprises four cores; Wherein the cross section of three cores forms an annulus just; Another root core cross section is circular; The rounded core in cross section is positioned at the cavity of the annular of other three cores composition;
The outside of the core that cross section is rounded sets gradually conductor shield 2, insulating barrier 3, insulation screen 4 from inside to outside;
The outside that cross section forms three cores of an annulus just sets gradually woven shield 6, copper strip shielding layer 7, water blocking layer 8, restrictive coating 9 from inside to outside.
Wherein, just to form the cross-sectional sizes of three cores of an annulus identical in cross section.Wherein, described water blocking layer adopts the good foamed material of water absorption to make.
Principle of the present utility model: the setting position of control conductor of the present utility model substantially increases the space availability ratio of power cable inside, make to compare than similar power cable, line through less, and adopts the good foamed material of water absorption to make watertight composition, and waterproof effect is obvious.
Claims (3)
1. a water-resistant power cable, is characterized in that, comprises four cores; Wherein the cross section of three cores forms an annulus just; Another root core cross section is circular; The rounded core in cross section is positioned at the cavity of the annular of other three cores composition;
The outside of the core that cross section is rounded sets gradually conductor shield, insulating barrier, insulation screen from inside to outside;
The outside that cross section forms three cores of an annulus just sets gradually woven shield, copper strip shielding layer, water blocking layer, restrictive coating from inside to outside.
2. a kind of water-resistant power cable according to claim 1, is characterized in that, the cross-sectional sizes that described cross section forms three cores of an annulus is just identical.
3. a kind of water-resistant power cable according to claim 1 and 2, is characterized in that, described water blocking layer adopts the good foamed material of water absorption to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472209.3U CN204204495U (en) | 2014-08-20 | 2014-08-20 | A kind of water-resistant power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472209.3U CN204204495U (en) | 2014-08-20 | 2014-08-20 | A kind of water-resistant power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204204495U true CN204204495U (en) | 2015-03-11 |
Family
ID=52662427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420472209.3U Expired - Fee Related CN204204495U (en) | 2014-08-20 | 2014-08-20 | A kind of water-resistant power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204204495U (en) |
-
2014
- 2014-08-20 CN CN201420472209.3U patent/CN204204495U/en not_active Expired - Fee Related
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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: 20150311 Termination date: 20170820 |