CN101329931A - Snow-proof freezing resistant environment protection instrumentation control cable - Google Patents
Snow-proof freezing resistant environment protection instrumentation control cable Download PDFInfo
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- CN101329931A CN101329931A CNA2008100230737A CN200810023073A CN101329931A CN 101329931 A CN101329931 A CN 101329931A CN A2008100230737 A CNA2008100230737 A CN A2008100230737A CN 200810023073 A CN200810023073 A CN 200810023073A CN 101329931 A CN101329931 A CN 101329931A
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- snow
- control cable
- environment protection
- cable core
- instrumentation control
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Abstract
The invention relates to a snow-protection and freeze resistant control cable of an environmental protection instrument, which comprises a jacket and an electrical cable core that is provided with a shielding layer and arranged in the jacket, and is characterized in that: four heating elements composed of a PTC material with a positive temperature coefficient and aluminium alloy electrodes are arranged; the heating elements are evenly arranged at the periphery of the electrical cable core and parallel to the electrical cable core; the jacket of the heating elements heaves outwards. The control cable has reasonable and simple structure, easy production and manufacturing, excellent electric property, physical property and chemical stability and good snow and freeze expelling performance. The control cable can greatly prevent the cable from breaking or the jacket from cracking caused by freeze when laid in areas that are cold and easy to freeze.
Description
Technical field
The present invention relates to a kind of structure of snow-proof freezing resistant environment protection instrumentation control cable, certain construction of cable that removes to avenge and have heating system is certainly particularly arranged, belong to the cable technology field.
Background technology
Instrumentation control cable is by comprising that cable core that conductor, insulating barrier are formed and oversheath etc. constitute, and having good electric property, physical property, chemical stability instrumentation control cable provides far distance controlled that guarantee is provided to automation control.Existing instrumentation control cable adopts polythene insulation PVC sheath and other auxiliary material to produce, and polyethylene and pvc material brittle temperature are not less than-20 ℃, for some northern zone is annual has-microthermal climate of 20-40 ℃.Continuing cold northern every year all has low temperature to cause conveying, control circuit cable breakage, and polyvinyl chloride can discharge a large amount of cigarettes, non-environmental protection gas such as hydrogen chloride under combustion case.The general instrument control cable is not gone the function avenging or heat certainly, can only face broken string or sheath cracking in case run into the low temperature sleety weather, cause control appliance normally not move, and then the tragedy that causes takes place.
Summary of the invention
Purpose of the present invention is exactly at existing instrumentation control cable above shortcomings, a kind of certain snow-proof freezing resistant that removes to avenge and have heating system certainly that both had is provided, the instrumentation control cable of good electric property, physical property, chemical stability is arranged again.
The object of the present invention is achieved like this, snow-proof freezing resistant environment protection instrumentation control cable, the electric cable core that comprises band screen in sheath and the sheath, it is characterized in that being provided with four and have the ptc material of positive temperature coefficient and the heating element that aluminum alloy anode constitutes, heating element evenly is arranged on the periphery of electric cable core, heating element is parallel with electric cable core, and the sheath at heating element place is to outer lug.
Described screen is sub-shield and total screen, and sub-shield is arranged on the interior item line of electric cable core, and total screen is arranged on the electric cable core periphery in the sheath.
Described screen is to meet the copper wire woven shield that GB9330-88 requires.
Described screen is to meet the copper strips lapped shielding layer that GB9330-88 requires.
Conductor in the described electric cable core is 1 class or the 2 class conductors that meet the GB/T3956-1997 material.
Conductor in the described electric cable core is 5 classes or the 6 class conductors that meet the GB/T3956-1997 material.
The present invention is rational in infrastructure simple, manufactures easily, and cost is low, and serviceability is good.Good electric property, physical property and chemical stability are arranged.Conductor adopts and to meet the GB/T3956-1997 material, and cable is that rigid structure adopts 1 class or 2 class conductors, when cable such as soft junction structure with 5 classes or 6 class conductors.The requirement of the XLPE material of stipulating among PE material or the GB/T12706-2002 is adopted in insulation.Copper wire braiding or the wrapped shielding of copper strips are adopted in shielding, and performance meets the requirement of GB9330-88.The protection sheath adopts polyolefine material.Heating element adopts ptc material and aluminum alloy anode with positive temperature coefficient to constitute.The protection sheath adopts the weather resistant polyolefine material.The cable configuration design becomes to have 4 juts (sheath at heating element place is to outer lug), makes cable have shake and upset ability in wind and snow, can snow and have the weather of wind to remove snow automatically.Heating element in the cable projection, make cable have the heating cable oversheath and reach the ability that snow and ice freezes in freezing occasion, the cold that is laid in or be prone to freezing zone can significantly reduce because of freezing cable break that causes or sheath cracking, and assurance equipment normally moves.
Description of drawings
Fig. 1 is the construction of cable schematic diagram that the present invention has branch shielding and total shielding;
Fig. 2 is the construction of cable schematic diagram that the present invention has total shielding;
Among the figure: 1 conductor, 2 insulating barriers, 3 bands, 4 screens, 5 bands, 6 screens, 7 sheaths, 8 heating elements, 9 sheaths.
Embodiment
Claims (6)
1, a kind of snow-proof freezing resistant environment protection instrumentation control cable, the electric cable core that comprises band screen in sheath and the sheath, it is characterized in that being provided with four and have the ptc material of positive temperature coefficient and the heating element that aluminum alloy anode constitutes, heating element evenly is arranged on the periphery of electric cable core, heating element is parallel with electric cable core, and the sheath at heating element place is to outer lug.
2, snow-proof freezing resistant environment protection instrumentation control cable according to claim 1 is characterized in that described screen is sub-shield and total screen, and sub-shield is arranged on the interior item line of electric cable core, and total screen is arranged on the electric cable core periphery in the sheath.
3, snow-proof freezing resistant environment protection instrumentation control cable according to claim 1 is characterized in that described screen is to meet the copper wire woven shield that GB9330-88 requires.
4, snow-proof freezing resistant environment protection instrumentation control cable according to claim 1 is characterized in that described screen is to meet the copper strips lapped shielding layer that GB9330-88 requires.
5, snow-proof freezing resistant environment protection instrumentation control cable according to claim 1 is characterized in that the conductor in the described electric cable core is 1 class or the 2 class conductors that meet the GB/T3956-1997 material.
6, snow-proof freezing resistant environment protection instrumentation control cable according to claim 1 is characterized in that the conductor in the described electric cable core is 5 classes or the 6 class conductors that meet the GB/T3956-1997 material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100230737A CN101329931B (en) | 2008-07-11 | 2008-07-11 | Snow-proof freezing resistant environment protection instrumentation control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100230737A CN101329931B (en) | 2008-07-11 | 2008-07-11 | Snow-proof freezing resistant environment protection instrumentation control cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101329931A true CN101329931A (en) | 2008-12-24 |
| CN101329931B CN101329931B (en) | 2010-09-15 |
Family
ID=40205674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100230737A Active CN101329931B (en) | 2008-07-11 | 2008-07-11 | Snow-proof freezing resistant environment protection instrumentation control cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101329931B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280185A (en) * | 2011-08-16 | 2011-12-14 | 安徽滨江电缆股份有限公司 | Cold-resistant cable |
| CN102314965A (en) * | 2010-07-06 | 2012-01-11 | 江苏亨通电力电缆有限公司 | Anti-static light armored grounding marine cable |
| CN103903732A (en) * | 2014-03-03 | 2014-07-02 | 安徽慧艺线缆集团有限公司 | Heating cable with automatic temperature control function |
| CN110317058A (en) * | 2019-06-25 | 2019-10-11 | 国网江西省电力有限公司电力科学研究院 | A kind of anti-icing barium titanate series PTC material and preparation method thereof |
-
2008
- 2008-07-11 CN CN2008100230737A patent/CN101329931B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314965A (en) * | 2010-07-06 | 2012-01-11 | 江苏亨通电力电缆有限公司 | Anti-static light armored grounding marine cable |
| CN102280185A (en) * | 2011-08-16 | 2011-12-14 | 安徽滨江电缆股份有限公司 | Cold-resistant cable |
| CN103903732A (en) * | 2014-03-03 | 2014-07-02 | 安徽慧艺线缆集团有限公司 | Heating cable with automatic temperature control function |
| CN110317058A (en) * | 2019-06-25 | 2019-10-11 | 国网江西省电力有限公司电力科学研究院 | A kind of anti-icing barium titanate series PTC material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101329931B (en) | 2010-09-15 |
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