CN202694946U - Four-core flame-retardant PVC insulated and sheathed power cable - Google Patents
Four-core flame-retardant PVC insulated and sheathed power cable Download PDFInfo
- Publication number
- CN202694946U CN202694946U CN 201220273817 CN201220273817U CN202694946U CN 202694946 U CN202694946 U CN 202694946U CN 201220273817 CN201220273817 CN 201220273817 CN 201220273817 U CN201220273817 U CN 201220273817U CN 202694946 U CN202694946 U CN 202694946U
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- fire
- resisting
- flame
- core
- power cable
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Abstract
The utility model discloses a four-core flame-retardant PVC (polyvinyl chloride) insulated and sheathed power cable which comprises three large conductors and a small conductor that are coated with fire-resisting layers respectively, wherein the fire-resisting layers are formed by adhering high-temperature-resisting polyester tapes onto the upper and lower surfaces of fire-resisting mica tapes respectively and then overlapping and wrapping, the thickness of each fire-resisting layer is not less than 1.2mm-1.8mm, and the fire-resisting layers are coated with insulating layers; the three larger conductors coated with the insulating layers are twisted into a bunch to form a cable core by taking the small conductor as a center, and the cable core is coated with a wrapping layer, an inner sheath layer, an armor layer and an outer sheath layer sequentially. The power cable is reasonable in structural design, the fire-resisting layers adopt the special combinational design of the fire-resisting mica tapes and the high-temperature-resisting polyester tapes, with the matching of the high-temperature-resisting wrapping layer outside the cable core, the flame retardance and the fire resistance of the cable are improved, and the power cable wins precious time for rescuing personnel to the greatest extent in a fire hazard environment.
Description
Technical field:
The utility model relates to the power cable technical field, relates in particular to a kind of four-core flame-retardant polyvinyl chloride insulation and sheath power cable.
Background technology:
Expansion along with the city, skyscraper, the hotel, large supermarket, hospital, the station, the airport constantly increases, subway, the construction of tunnel traffic, and large-scale Public Physical Education, the public place of entertainment, the increase of public transit facility, the colliery, chemical industry, oil, medicine, military, nuclear power station, iron and steel, metallurgical, the mine, naval vessel etc., fire-fighting, the importance of fire safety shows especially out, how in the situation of fire, ensure within a certain period of time the unobstructed of electric power and communication, win to greatest extent valuable rescue time, reduce personnel's injures and deaths and the safety of lives and properties.
The ac rated voltage that the designer has developed the 3+1 core is the 0.6/1kv power cable, improves the fire resistant flame retardant performance of cable as far as possible, wins valuable rescue time to the fire fighter.
The utility model content:
In order to remedy the prior art problem, the purpose of this utility model provides a kind of four-core flame-retardant polyvinyl chloride insulation and sheath power cable, and reasonable in design has improved the fire resistant flame retardant performance of cable effectively.
The technical solution of the utility model is as follows:
Four-core flame-retardant polyvinyl chloride insulation and sheath power cable comprise three large conductors, little conductor, it is characterized in that: the nominal cross of described three large conductors is 25～185mm
2, the nominal cross of little conductor is 16～95mm
2Three large conductors and little conductor are enclosed with respectively flame retardant coating outward, flame retardant coating adopts the fire-resistant isinglass belt upper and lower surface to adhere to respectively overlapping wrapped formation behind one deck high temperature resistance polyester band, the thickness of flame retardant coating is not less than 1.2mm～1.8mm, flame retardant coating is wrapped with insulating barrier, the stranded bunchy centered by little conductor of three large conductors behind the wrap insulate layer consists of cable core, and cable core is enclosed with lapping layer, inner restrictive coating, armour, external sheath layer outward successively.
Described four-core flame-retardant polyvinyl chloride insulation and sheath power cable is characterized in that: it is flame-proof polyvinyl chloride that described insulating barrier, inner restrictive coating, external sheath layer adopt material.
Described four-core flame-retardant polyvinyl chloride insulation and sheath power cable is characterized in that: described lapping layer adopts the overlapping wrapped formation of high-temperature fibre band, and the wrapped rate of putting up is not less than 47%.
The utility model has the advantages that:
The utility model reasonable in design, adopt fire-resistant isinglass belt and the design of high temperature resistance polyester band specific combination by flame retardant coating, cooperate the outer high temperature resistant lapping layer of cable core, effectively improved fire resistance and the fire resistance of cable, given under the environment of breaking out of fire to try to gain time precious to one to emergency staffs as far as possible.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Embodiment:
Referring to Fig. 1:
Four-core flame-retardant polyvinyl chloride insulation and sheath power cable comprise that the nominal cross of three large conductors 1,2, three large conductors 1 of little conductor is 25～185mm
2, the nominal cross of little conductor 2 is 16～95mm
2Three large conductors 1 and the little conductor 2 outer flame retardant coatings 3 that are enclosed with respectively, flame retardant coating 3 adopts the fire-resistant isinglass belt upper and lower surfaces to adhere to respectively overlapping wrapped formation behind one deck high temperature resistance polyester band, the thickness of flame retardant coating 3 is not less than 1.2mm～1.8mm, flame retardant coating 3 is wrapped with insulating barrier 4, the stranded bunchy centered by little conductor 2 of three large conductors 1 behind the wrap insulate layer 4 consists of cable core, and cable core is enclosed with lapping layer 5, inner restrictive coating 6, armour 7, external sheath layer 8 outward successively.
It is flame-proof polyvinyl chloride that insulating barrier 4, inner restrictive coating 6, external sheath layer 8 adopt material.
Lapping layer 5 adopts the overlapping wrapped formation of high-temperature fibre band, and the wrapped rate of putting up is not less than 47%.
Claims (3)
1. a four-core flame-retardant polyvinyl chloride insulation and sheath power cable comprise three large conductors, little conductor, and it is characterized in that: the nominal cross of described three large conductors is 25～185mm
2, the nominal cross of little conductor is 16～95mm
2Three large conductors and little conductor are enclosed with respectively flame retardant coating outward, flame retardant coating adopts the fire-resistant isinglass belt upper and lower surface to adhere to respectively overlapping wrapped formation behind one deck high temperature resistance polyester band, the thickness of flame retardant coating is not less than 1.2mm～1.8mm, flame retardant coating is wrapped with insulating barrier, the stranded bunchy centered by little conductor of three large conductors behind the wrap insulate layer consists of cable core, and cable core is enclosed with lapping layer, inner restrictive coating, armour, external sheath layer outward successively.
2. four-core flame-retardant polyvinyl chloride insulation according to claim 1 and sheath power cable is characterized in that: it is flame-proof polyvinyl chloride that described insulating barrier, inner restrictive coating, external sheath layer adopt material.
3. four-core flame-retardant polyvinyl chloride insulation according to claim 1 and sheath power cable is characterized in that: described lapping layer adopts the overlapping wrapped formation of high-temperature fibre band, and the wrapped rate of putting up is not less than 47%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273817 CN202694946U (en) | 2012-06-12 | 2012-06-12 | Four-core flame-retardant PVC insulated and sheathed power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273817 CN202694946U (en) | 2012-06-12 | 2012-06-12 | Four-core flame-retardant PVC insulated and sheathed power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202694946U true CN202694946U (en) | 2013-01-23 |
Family
ID=47550528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220273817 Expired - Fee Related CN202694946U (en) | 2012-06-12 | 2012-06-12 | Four-core flame-retardant PVC insulated and sheathed power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202694946U (en) |
-
2012
- 2012-06-12 CN CN 201220273817 patent/CN202694946U/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: 20130123 Termination date: 20160612 |