CN201170970Y - Single core metal-shielding type power cable with low loss - Google Patents
Single core metal-shielding type power cable with low loss Download PDFInfo
- Publication number
- CN201170970Y CN201170970Y CNU2008200604355U CN200820060435U CN201170970Y CN 201170970 Y CN201170970 Y CN 201170970Y CN U2008200604355 U CNU2008200604355 U CN U2008200604355U CN 200820060435 U CN200820060435 U CN 200820060435U CN 201170970 Y CN201170970 Y CN 201170970Y
- Authority
- CN
- China
- Prior art keywords
- power cable
- single core
- type power
- low
- cable
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a single-core armored power cable of low loss, comprising: a conductor, an insulation layer, an inside liner and a gasket which are sequentially arranged from inside to outside; wherein, a flame retardant coating is arranged between the conductor and the insulation layer which is externally wound with the inside liner; a non-magnetic armor is arranged between the inside liner and the gasket. The single-core armored power cable mainly solves the problem on reduction of current-carrying capacity is considerably decreased which is caused by the heating cable due to eddying effect of the armored power cable. In addition, the cable can safely run for certain time when fire accidents take place, thus creating conditions and wining time for rescue and relief work. Therefore, the cable of the utility model meets the requirements of high-temperature and refractory armored cable on the current market.
Description
Technical field
The utility model relates to a kind of single core armoured cable, the high temperature resistant low-loss armouring of particularly low-loss single core fluorine plastic insulated fireproof type power cable.Belong to the electric wire field.
Background technology
In many abominable operational environments, cable must meet relevant characteristic, as high temperature resistant, corrosion-resistant (highly acid, strong basicity), anti-high and cold, ageing-resistant etc., and the electric cable with large cross-section of the huge market demand especially.But the long-pending multicore cable in heavy in section is not only produced difficulty, mainly also is high material consumption, and external diameter is big, and the bending radius of whole cable is big, and flexibility is little, is difficult to install and use.So the trend of multicore cable occurs replacing with single-core cable, it is also advantageous in that single-core cable can better dispel the heat, and to a certain degree improves the product ampacity.Patent as the disclosed application number 200620010032.0 of Chinese patent is a single-core cable, and application number 200620072001.8 is an armoured cable.But present single core armoured cable is because conventional armoring material loss exists identical working temperature and same environmental conditions downloading flow than the little a lot of defective of unarmored cable ampacity too greatly and always.Its loss reason mainly is that magnetic hysteresis and eddy current loss play a decisive role.These losses are all relevant with magnetic field intensity, and magnetic field intensity is current related with core.Because the magnetization always will lag behind the variation (hysteresis) of magnetic field intensity, the position of magnet molecule constantly changes alternating electromagnetic field mutually during the ferromagnet remagnetization in steel band, and the molecular oscillation aggravation will be generated heat increase in temperature.Also produce induced current in alternating magnetic field in the steel band, this induced current is the own closed eddy current that forms in the steel band body.Because resistance is very little, strength of vortex can be very big, makes steel band emit a large amount of heats, and then reduce the ampacity of cable.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of low-loss single core armouring type power cable is provided.With the problems referred to above and the defective of solution prior art, and have the characteristics of fireproof high-temperature resistant.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of low-loss single core armouring type power cable comprises the conductor, insulation, inner covering, non magnetic armouring and the sheath that are provided with from inside to outside successively; Be provided with flame retardant coating between described conductor and insulation, insulation is outer to be surrounded with inner covering, is provided with non magnetic armouring between inner covering and sheath.
Described conductor is single core conductor, can be copper core or copper-covered aluminum-core or copper cladding aluminium pipe according to specification.
Described flame retardant coating is the import mica tape, and the mica tape required thickness is moderate, hardness is little, binder content is moderate and mica sheet is not easy to come off, mica can tight burning on the cable core surface.
Described insulation is a fluoroplastic insulation, and the preferred heatproof of fluoroplastics is good, the material of difficult fusing;
Described inner covering is the glass fibre belt, can be high temperature resistant.
Described non magnetic armouring is a kind of in stainless steel band, aluminum alloy strip or the copper alloy belt, and non magnetic armouring can be eliminated the puzzlement that the armoring material eddy current effect causes that cable heating itself causes the product ampacity to descend significantly.Can carry out anti-corrosion treatment to nonmagnetic substance.
The material of described sheath is the halogen-free and low-smoke flame-retardant polyolefin flame-retardant sheath material, adds a large amount of hydrated metal oxide inorganic material when extruding in the protective cover material, as aluminium hydroxide, magnesium hydroxide etc., makes oversheath have the effect of oxygen barrier layer concurrently.When cable is met the naked light burning, the oversheath that contains the oxygen barrier material can be separated out large quantity of moisture to reduce ambient temperature, and form molten aluminium oxide duricrust that does not fire or magnesium oxide duricrust etc., with contacting of isolated organic substance and outside air, cable is reached from the purpose of putting out, thereby improve fire-retardant rank greatly, can reach A level flame retardant level.
The utility model mainly solves is exactly to adopt a kind ofly can eliminate significantly that the armoring material eddy current effect causes cable heating itself and the problem that causes the product ampacity to descend.In addition, can also safe operation in a period of time when fire takes place, created condition for the rescue and relief work at scene, won the time, satisfied the demand of current market to the high-temperature flame-proof armoured cable.
Description of drawings:
Fig. 1 is a cross-sectional structure schematic diagram of the present utility model.
The non magnetic armouring 6-of 1-conductor 2-flame retardant coating 3-insulation 4-inner covering 5-sheath.
Embodiment
Further set forth design feature of the present utility model below in conjunction with accompanying drawing and specific embodiment.
A kind of low-loss single core armouring type power cable as shown in Figure 1 comprises the conductor 1, insulation 3, inner covering 4 and the sheath 6 that are provided with from inside to outside successively; At described conductor 1 with insulate and be provided with flame retardant coating 2 between 3, insulation 3 is outer to be surrounded with inner covering 4, is provided with non magnetic armouring 5 between inner covering 4 and sheath.
Embodiment
Conductor is satisfactory copper core or copper-covered aluminum-core or copper cladding aluminium pipe material.
Flame retardant coating is an import mica tape material, coats evenly, and sintering is on conductor and difficult drop-off easily.
But insulating barrier is the fluoroplastics material of withstand higher temperatures.
Inner covering is resistant to elevated temperatures glass fiber tape.
Armour is a nonmagnetic substance, as stainless steel band or aluminum alloy strip or copper alloy belt.
Sheath has the double action of sheath and oxygen barrier layer concurrently for adding the halogen-free and low-smoke flame-retardant polyolefin flame-retardant sheath material of a large amount of hydrated metal oxide inorganic material.
Claims (7)
1, a kind of low-loss single core armouring type power cable comprises the conductor (1), insulation (3), inner covering (4) and the sheath (6) that are provided with from inside to outside successively; It is characterized in that: be provided with flame retardant coating (2) between described conductor (1) and insulation (3), insulation (3) is outer to be surrounded with inner covering (4), is provided with non magnetic armouring (5) between inner covering (4) and sheath (6).
2, a kind of low-loss single core armouring type power cable according to claim 1, it is characterized in that: described conductor (1) is single core conductor, can be copper core or copper-covered aluminum-core or copper cladding aluminium pipe according to specification.
3, a kind of low-loss single core armouring type power cable according to claim 1, it is characterized in that: described flame retardant coating (2) is the import mica tape.
4, a kind of low-loss single core armouring type power cable according to claim 1 is characterized in that: described insulation (3) is a fluoroplastic insulation.
5, a kind of low-loss single core armouring type power cable according to claim 1, it is characterized in that: described inner covering (4) is the glass fibre belt.
6, a kind of low-loss single core armouring type power cable according to claim 1 is characterized in that: a kind of in stainless steel band, aluminum alloy strip or the copper alloy belt of described non magnetic armouring (5),
7, a kind of low-loss single core armouring type power cable according to claim 1, it is characterized in that: described sheath (6) is the halogen-free and low-smoke flame-retardant polyolefin fire retardant jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200604355U CN201170970Y (en) | 2008-01-24 | 2008-01-24 | Single core metal-shielding type power cable with low loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200604355U CN201170970Y (en) | 2008-01-24 | 2008-01-24 | Single core metal-shielding type power cable with low loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170970Y true CN201170970Y (en) | 2008-12-24 |
Family
ID=40210021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200604355U Expired - Fee Related CN201170970Y (en) | 2008-01-24 | 2008-01-24 | Single core metal-shielding type power cable with low loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170970Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081996A (en) * | 2011-03-04 | 2011-06-01 | 江苏长峰电缆有限公司 | Aluminum alloy conductor cable |
| CN102157243A (en) * | 2011-04-18 | 2011-08-17 | 大连沈特电缆有限公司 | Copper-clad aluminum core frequency converter cable |
| CN102222541A (en) * | 2011-07-05 | 2011-10-19 | 浙江省电力公司舟山电力局 | Anti-corrosion submarine cable with low armoring loss for communication monitoring |
| CN102231298A (en) * | 2011-04-22 | 2011-11-02 | 大连沈特电缆有限公司 | Fluoroplastic insulated control cable with copper clad aluminium core and silicon rubber sheath |
| CN102751028A (en) * | 2011-04-19 | 2012-10-24 | 大连沈特电缆有限公司 | Copper-clad aluminum core high-voltage power cable |
| CN103500607A (en) * | 2013-09-25 | 2014-01-08 | 江苏长远电缆有限公司 | Aluminum alloy high-temperature resistant power cable |
| CN104185322A (en) * | 2014-09-09 | 2014-12-03 | 芜湖市恒鑫电缆有限责任公司 | Safe geothermal heating cable |
| CN104575772A (en) * | 2013-10-18 | 2015-04-29 | 宁夏海洋线缆有限公司 | High-performance building aluminum alloy cable |
-
2008
- 2008-01-24 CN CNU2008200604355U patent/CN201170970Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081996A (en) * | 2011-03-04 | 2011-06-01 | 江苏长峰电缆有限公司 | Aluminum alloy conductor cable |
| CN102157243A (en) * | 2011-04-18 | 2011-08-17 | 大连沈特电缆有限公司 | Copper-clad aluminum core frequency converter cable |
| CN102751028A (en) * | 2011-04-19 | 2012-10-24 | 大连沈特电缆有限公司 | Copper-clad aluminum core high-voltage power cable |
| CN102231298A (en) * | 2011-04-22 | 2011-11-02 | 大连沈特电缆有限公司 | Fluoroplastic insulated control cable with copper clad aluminium core and silicon rubber sheath |
| CN102222541A (en) * | 2011-07-05 | 2011-10-19 | 浙江省电力公司舟山电力局 | Anti-corrosion submarine cable with low armoring loss for communication monitoring |
| CN103500607A (en) * | 2013-09-25 | 2014-01-08 | 江苏长远电缆有限公司 | Aluminum alloy high-temperature resistant power cable |
| CN104575772A (en) * | 2013-10-18 | 2015-04-29 | 宁夏海洋线缆有限公司 | High-performance building aluminum alloy cable |
| CN104185322A (en) * | 2014-09-09 | 2014-12-03 | 芜湖市恒鑫电缆有限责任公司 | Safe geothermal heating cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201170970Y (en) | Single core metal-shielding type power cable with low loss | |
| CN203950607U (en) | In a kind of aluminium alloy, press fireproof power cable | |
| CN201607966U (en) | Anticorrosion temperature-resistant cable for magnesium thermal resistance | |
| CN204760074U (en) | Super flexible fireproof cable of chain armor metal covering of mica insulation protection | |
| CN201477926U (en) | Fire-resistant, high-temperature resistant and anti-jamming shielded control cable | |
| CN104851481A (en) | Fire-resistant aluminum alloy cable | |
| CN102708960A (en) | High temperature-resistant cable | |
| CN209843308U (en) | Crosslinked polyethylene cable | |
| CN202711834U (en) | Novel flame-retardant and high-temperature-resistant cable | |
| CN208045168U (en) | A kind of high intensity cold resistant cable | |
| CN203520904U (en) | Heatproof and fireproof special cable | |
| CN204558139U (en) | A kind of cable adopting carbon fiber complex core line | |
| CN209691449U (en) | A kind of multicore high flexibility mineral insulation heat-insulating, fire-preventing cable | |
| CN103854728A (en) | Heatproof fireproof special cable | |
| CN204348411U (en) | High winding degree rare earth alloy cable | |
| CN207529712U (en) | A kind of insulation high-temperature-resistant cable | |
| CN207489548U (en) | A kind of anti-interference polyvinyl chloride insulation LWA light wire armoured power cable of resistance to compression tension | |
| CN104347185A (en) | Composite aluminum alloy cable | |
| CN203536024U (en) | Explosion-proof type heating cable | |
| CN203536036U (en) | Flexible insulating fireproof carbon fiber wire cable | |
| CN203659489U (en) | High-strength insulated heat-insulation cable | |
| CN204143933U (en) | Inorganic mineral list core fireproof cable | |
| CN203520914U (en) | Flexible fireproof cable | |
| CN219202823U (en) | Metal sheath inorganic matter insulated cable | |
| CN204189503U (en) | Copper core embossing copper sheath inorganic mineral insulation fireproof cable |
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: 20081224 Termination date: 20100124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |