CN111048255A - High-flame-retardant ultraviolet-irradiation-proof power cable for rail transit - Google Patents
High-flame-retardant ultraviolet-irradiation-proof power cable for rail transit Download PDFInfo
- Publication number
- CN111048255A CN111048255A CN201911228181.2A CN201911228181A CN111048255A CN 111048255 A CN111048255 A CN 111048255A CN 201911228181 A CN201911228181 A CN 201911228181A CN 111048255 A CN111048255 A CN 111048255A
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- Prior art keywords
- flame
- retardant
- layer
- power cable
- cavity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- Insulated Conductors (AREA)
Abstract
The invention relates to a high-flame-retardance ultraviolet-irradiation-resistant power cable for rail transit, which comprises a cable core, an insulating layer, a shielding layer, a flame-retardant layer, an ultraviolet-resistant layer and a wear-resistant protective layer, wherein the insulating layer, the shielding layer, the flame-retardant layer, the ultraviolet-resistant layer and the wear-resistant protective layer are sequentially coated outside the cable core from inside to outside, a flame-retardant cavity and a flame-retardant support frame for sequentially separating the flame-retardant cavity are arranged between the flame-. Compared with the prior art, the flame-retardant power cable has the advantages that the flame-retardant coating made of the magnesium hydroxide flame retardant is used as a flame-retardant means for further enhancing the power cable, and water vapor generated after the magnesium hydroxide flame retardant is decomposed is fully distributed in the flame-retardant cavity through the flame-retardant cavity and the open pores on the flame-retardant support frame, so that the effect of diluting combustible gas is achieved, the service life of the power cable is prolonged, and the working strength of maintenance is reduced.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a high-flame-retardant ultraviolet irradiation-proof power cable for rail transit.
Background
Due to the complexity and the particularity of laying environments in rail transit such as subways and light rails, the standards required to be met by the flame retardance, the safety and the reliability of a power system are extremely high, and particularly the flame retardance is extremely important. The rail transit power cable is mostly used in underground with dense population, and once a fire disaster happens, a serious safety accident is easily caused. The existing power cable cannot meet the use requirement of rail transit. In addition, the power cable for rail transit is sometimes in an ultraviolet irradiation environment, so that the aging of the power cable is accelerated, the service life of the power cable is shortened, and the working strength of maintenance and repair is increased.
Disclosure of Invention
In order to solve the technical problem, the invention provides a high-flame-retardant ultraviolet irradiation-proof power cable for rail transit.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
high fire-retardant anti ultraviolet shines power cable for track traffic, including the cable core, from inside to outside in proper order the cladding at the outside insulating layer of cable core, shielding layer, fire-retardant layer, anti ultraviolet layer, wear-resisting protective layer, be equipped with fire-retardant cavity and with fire-retardant cavity divided fire-retardant strut in proper order between fire-retardant layer and the shielding layer, be equipped with fire-retardant coating on the fire-retardant inlayer wall.
Furthermore, the flame-retardant support frame is provided with open air holes for communicating the adjacent flame-retardant cavities.
Further, the flame-retardant coating is a magnesium hydroxide flame retardant.
Furthermore, the fire-retardant cavity is provided with a waterproof layer on the outer wall of the shielding layer.
The invention has the beneficial effects that:
compared with the prior art, the flame-retardant power cable has the advantages that the flame-retardant coating made of the magnesium hydroxide flame retardant is used as a flame-retardant means for further enhancing the power cable, and water vapor generated after the magnesium hydroxide flame retardant is decomposed is fully distributed in the flame-retardant cavity through the flame-retardant cavity and the open pores on the flame-retardant support frame, so that the effect of diluting combustible gas is achieved, the service life of the power cable is prolonged, and the working strength of maintenance is reduced.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged schematic view at I in fig. 1.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained in the following with the accompanying drawings and the embodiments.
As shown in fig. 1 to 2, the high-flame-retardant ultraviolet-irradiation-proof power cable for rail transit comprises a cable core 1, and an insulating layer 2, a shielding layer 3, a flame-retardant layer 5, an ultraviolet-proof layer 7 and a wear-resistant protective layer 8 which are sequentially coated outside the cable core 1 from inside to outside, wherein the insulating layer 2 is made of a polyethylene material, and the ultraviolet-proof layer 7 is made of a ceramic polyolefin material added with an ultraviolet absorbent, and has high ultraviolet-proof and fire-resistant properties.
Twelve flame-retardant brackets 51 are uniformly distributed between the flame-retardant layer 5 and the shielding layer 3, a flame-retardant cavity 5a in an annular structure is supported between the flame-retardant layer 5 and the shielding layer 3 through the twelve flame-retardant brackets 51, the flame-retardant cavity 5a is divided into twelve independent chambers, a flame-retardant coating 6 is arranged inside each independent flame-retardant cavity 5a and on the inner wall of the flame-retardant layer 5, the flame-retardant coating 6 is a magnesium hydroxide flame retardant, and when the magnesium hydroxide flame retardant is decomposed by heating, the temperature of the power cable can be absorbed, so that the flame-retardant coating has the effects of inhibiting the decomposition of a polymer and cooling the generated combustible gas; and in addition, the magnesium oxide generated after the magnesium hydroxide flame retardant is heated and decomposed can absorb smoke and combustible volatile substances, and simultaneously covers the surface of the material to form a protective layer for delaying or preventing the combustion, and in addition, the water vapor released after the magnesium hydroxide flame retardant is heated plays a role in diluting combustible gas.
The flame-retardant cavity 5a is used as a reaction chamber for the magnesium hydroxide flame retardant to be decomposed by heating; furthermore, the twelve flame-retardant brackets 51 are all provided with three layers of open air holes 9 distributed along the radial direction, and the twelve flame-retardant cavities 5a are communicated with each other through the open air holes 9 to form a complete annular flame-retardant cavity 5 a.
In order to prevent the shielding layer 3 from being affected by water vapor and being affected by moisture, the waterproof layer 4 is coated on the outer wall of the shielding layer 3 inside the twelve flame-retardant cavities 5a to prevent the shielding effect of the shielding layer 3 from being reduced.
According to the invention, the flame-retardant coating made of the magnesium hydroxide flame retardant is used as a flame-retardant means for further enhancing the power cable, and water vapor generated after the magnesium hydroxide flame retardant is decomposed is fully distributed in the flame-retardant cavity through the open pores on the flame-retardant cavity and the flame-retardant support frame, so that the effect of diluting combustible gas is achieved, the service life of the power cable is prolonged, and the working strength of maintenance and repair is reduced.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. Power cable is used in high fire-retardant anti ultraviolet irradiation track traffic, include cable core (1), from inside to outside in proper order the cladding at cable core (1) outside insulating layer (2), shielding layer (3), fire-retardant layer (5), prevent ultraviolet layer (7), wear-resisting protective layer (8), its characterized in that: the flame-retardant coating is characterized in that a flame-retardant cavity (5a) and a flame-retardant support frame (51) which sequentially separates the flame-retardant cavity (5a) are arranged between the flame-retardant layer (5) and the shielding layer (3), and a flame-retardant coating (6) is arranged on the inner wall of the flame-retardant layer (5).
2. The power cable for high flame retardation and ultraviolet irradiation prevention track traffic as claimed in claim 1, wherein: the flame-retardant bracket (51) is provided with an open pore (9) for communicating the adjacent flame-retardant cavities (5 a).
3. The power cable for high flame retardation and ultraviolet irradiation prevention track traffic as claimed in claim 1, wherein: the flame-retardant coating (6) is a magnesium hydroxide flame retardant.
4. The power cable for high flame retardation and ultraviolet irradiation prevention track traffic as claimed in claim 1, wherein: and a waterproof layer (4) is coated on the outer wall of the shielding layer (3) in the flame-retardant cavity (5 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911228181.2A CN111048255A (en) | 2019-12-04 | 2019-12-04 | High-flame-retardant ultraviolet-irradiation-proof power cable for rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911228181.2A CN111048255A (en) | 2019-12-04 | 2019-12-04 | High-flame-retardant ultraviolet-irradiation-proof power cable for rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111048255A true CN111048255A (en) | 2020-04-21 |
Family
ID=70234558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911228181.2A Pending CN111048255A (en) | 2019-12-04 | 2019-12-04 | High-flame-retardant ultraviolet-irradiation-proof power cable for rail transit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111048255A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09134614A (en) * | 1995-11-09 | 1997-05-20 | Showa Electric Wire & Cable Co Ltd | Heat resistant insulated wire |
| CN103606398A (en) * | 2013-11-29 | 2014-02-26 | 无锡江南电缆有限公司 | Cable for urban light rail subway service |
| CN205900180U (en) * | 2016-06-30 | 2017-01-18 | 杭州鸿雁线缆有限公司 | Rail transit power supply system for contact net direct current 1500V do not have steamed waterproof flexible cable |
| CN106633479A (en) * | 2016-10-17 | 2017-05-10 | 昆山翰辉电子科技有限公司 | Anti-abrasion sheath layer and coaxial cable with same |
| CN208596558U (en) * | 2018-06-22 | 2019-03-12 | 河南品创电力科技有限公司 | A kind of anti-freeze cable |
| CN209000623U (en) * | 2018-11-05 | 2019-06-18 | 河南华东电缆股份有限公司 | A kind of ageing-resistant high-speed rail private cable of flame retardant type |
| CN209015759U (en) * | 2018-12-18 | 2019-06-21 | 四川新世纪线缆有限公司 | A kind of construction project flame retardant type jacketed cable |
| CN109949986A (en) * | 2017-12-20 | 2019-06-28 | 椤句腑 | Flame retardant type wire and cable |
| CN110148492A (en) * | 2019-06-25 | 2019-08-20 | 晋源电气集团股份有限公司 | A kind of cross-linked polyethylene insulation fire-proof inflaming retarding power cable |
| CN209525949U (en) * | 2018-11-01 | 2019-10-22 | 陕西华邦科技发展有限公司 | A kind of comprehensive cable convenient for changeing inner core |
-
2019
- 2019-12-04 CN CN201911228181.2A patent/CN111048255A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09134614A (en) * | 1995-11-09 | 1997-05-20 | Showa Electric Wire & Cable Co Ltd | Heat resistant insulated wire |
| CN103606398A (en) * | 2013-11-29 | 2014-02-26 | 无锡江南电缆有限公司 | Cable for urban light rail subway service |
| CN205900180U (en) * | 2016-06-30 | 2017-01-18 | 杭州鸿雁线缆有限公司 | Rail transit power supply system for contact net direct current 1500V do not have steamed waterproof flexible cable |
| CN106633479A (en) * | 2016-10-17 | 2017-05-10 | 昆山翰辉电子科技有限公司 | Anti-abrasion sheath layer and coaxial cable with same |
| CN109949986A (en) * | 2017-12-20 | 2019-06-28 | 椤句腑 | Flame retardant type wire and cable |
| CN208596558U (en) * | 2018-06-22 | 2019-03-12 | 河南品创电力科技有限公司 | A kind of anti-freeze cable |
| CN209525949U (en) * | 2018-11-01 | 2019-10-22 | 陕西华邦科技发展有限公司 | A kind of comprehensive cable convenient for changeing inner core |
| CN209000623U (en) * | 2018-11-05 | 2019-06-18 | 河南华东电缆股份有限公司 | A kind of ageing-resistant high-speed rail private cable of flame retardant type |
| CN209015759U (en) * | 2018-12-18 | 2019-06-21 | 四川新世纪线缆有限公司 | A kind of construction project flame retardant type jacketed cable |
| CN110148492A (en) * | 2019-06-25 | 2019-08-20 | 晋源电气集团股份有限公司 | A kind of cross-linked polyethylene insulation fire-proof inflaming retarding power cable |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20200421 |