CN109727716B - Sun-proof fire resisting cable - Google Patents
Sun-proof fire resisting cable Download PDFInfo
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- CN109727716B CN109727716B CN201910132644.9A CN201910132644A CN109727716B CN 109727716 B CN109727716 B CN 109727716B CN 201910132644 A CN201910132644 A CN 201910132644A CN 109727716 B CN109727716 B CN 109727716B
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- polyolefin sheath
- retardant polyolefin
- cable
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Abstract
The invention discloses a sun-proof fire-resistant cable, wherein a low-smoke halogen-free flame-retardant polyolefin sheath is sleeved outside a protective layer of the cable, a vacuum cavity is uniformly formed in an annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath in an annular array by taking a wire core as a center, T-shaped convex strips are uniformly formed on the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath in an annular array by taking the wire core as a center, heat reflecting plates are arranged on heat reflecting plate mounting grooves of two adjacent T-shaped convex strips and positioned at the outer side of the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath, and most of sunlight heat energy projected onto the cable can be reflected by the; after the insulating layer and the protective layer are damaged by burning, the ferrous oxide powder and the charcoal strips react at high temperature to generate carbon dioxide gas around the conductor core of the cable so as to delay the conductor core from being burnt out.
Description
Technical Field
The invention belongs to the technical field of communication cables, and particularly relates to a sun-proof fire-resistant cable.
Background
When the existing cable is laid in an overhead mode, although the cable is convenient to overhaul and wire, the cable is placed in the air, is exposed to wind and sun for a long time and is irradiated by ultraviolet rays, the outer layer of the cable is easy to age, and the aged cable has potential safety hazards of electric leakage, cracking and the like; similarly, when a fire occurs in the overhead cable or when the cable is self-ignited due to the fact that the temperature of the conductor core is too high, the conductor core of the cable often breaks down instantly when the fire occurs due to the fact that the fire resistance of the cable is weak after the fire occurs, and the fire resistance needs to be further improved.
Disclosure of Invention
In view of the shortcomings of the prior art, the present invention is directed to providing a sun-proof fire-resistant cable that can reduce the cable from aging due to the sun heat by reflecting sunlight and can delay the burnout of a wire core of the cable by generating carbon dioxide gas around the wire core in case of a fire.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sun-proof fire-resistant cable comprises a wire core, an insulating layer and a protective layer in sequence from inside to outside, wherein the insulating layer is a cross-linked polyvinyl chloride plastic sleeve, charcoal strips are embedded in the insulating layer by taking the wire core as a central annular array and are uniformly distributed, the protective layer is a polyethylene plastic sleeve, ferrous oxide powder is filled in the protective layer by taking the wire core as a central annular array and is uniformly distributed, the ferrous oxide powder and the charcoal strips correspond one to one, a low-smoke halogen-free flame-retardant polyolefin sheath is sleeved outside the protective layer, a vacuum cavity is formed in the annular sleeve of the low-smoke halogen-free flame-retardant polyolefin sheath by taking the wire core as a central annular array and is uniformly distributed, T-shaped heat raised lines are formed on the outer wall of the annular sleeve of the low-smoke halogen-free flame-retardant polyolefin sheath by taking the wire core as a central annular array and are uniformly, the heat reflection plates are arranged on the heat reflection plate installation grooves of the two adjacent T-shaped raised lines and are positioned outside the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath.
Further, the heat reflection plate sequentially comprises a silicon rubber bottom plate, a flame-retardant nylon reinforcing plate and a heat reflection coating layer from inside to outside, the flame-retardant nylon reinforcing plate is adhered or hot-pressed to be formed on the outer side of the silicon rubber bottom plate, and the heat reflection coating layer is coated on the surface of the flame-retardant nylon reinforcing plate.
Further, the heat reflection coating layer is formed by mixing and coating 33 parts of acrylic resin, 35 parts of titanium dioxide, 30 parts of modified nano particles, 2 parts of zinc oxide and 0.1 part of auxiliary agent on the surface of the flame-retardant nylon reinforced plate according to parts by weight.
Further, the mass ratio of the ferrous oxide powder to the charcoal bars is 2: 1.
The invention has the following beneficial effects:
according to the sun-proof fire-resistant cable, the low-smoke halogen-free flame-retardant polyolefin sheath is sleeved outside the protective layer, the vacuum cavities are uniformly distributed and formed in the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath by taking the wire core as a central annular array, the T-shaped convex strips are uniformly distributed and formed on the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath by taking the wire core as a central annular array, heat reflection plate mounting grooves are formed between two sides of each T-shaped convex strip and the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath, the heat reflection plates are mounted on the heat reflection plate mounting grooves of two adjacent T-shaped convex strips and positioned on the outer side of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath; meanwhile, when a fire occurs, the ferrous oxide powder and the charcoal bars can react to generate carbon dioxide to relieve the fire after the insulating layer and the protective layer are burnt and damaged, and the carbon dioxide gas is generated around the conductor core of the cable to delay the conductor core from being burnt out; has the characteristics of sun protection and fire resistance.
Drawings
Fig. 1 is a schematic structural diagram of a sun-proof fire-resistant cable according to the present invention.
In the figure: 1. a wire core; 2. an insulating layer; 3. a protective layer; 4. a low-smoke halogen-free flame-retardant polyolefin sheath; 5. a heat reflection plate; 21. charcoal bars; 31. ferrous oxide powder; 41. a vacuum chamber; 42. t-shaped convex strips; 43. a heat reflection plate mounting groove; 51. a silicone rubber soleplate; 52. a flame retardant nylon reinforcement plate; 53. a heat reflective coating layer.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments so as to more clearly understand the technical idea of the invention claimed.
As shown in figure 1, the sun-proof fire-resistant cable of the invention sequentially comprises a wire core 1, an insulating layer 2 and a protective layer 3 from inside to outside, wherein the insulating layer 2 is a crosslinked polyvinyl chloride plastic sleeve, charcoal strips 21 are uniformly distributed and embedded in the insulating layer 2 by taking the wire core 1 as a central annular array, the protective layer 3 is a polyethylene plastic sleeve, ferrous oxide powder 31 is uniformly distributed and filled in the protective layer 3 by taking the wire core 1 as a central annular array, the ferrous oxide powder 31 and the charcoal strips 21 are in one-to-one correspondence, the mass ratio of the ferrous oxide powder 31 to the charcoal strips 21 is 2:1, a low-smoke halogen-free flame-retardant polyolefin sheath 4 is sleeved outside the protective layer 3, vacuum cavities 41 are uniformly distributed and formed in the annular sleeve of the low-smoke halogen-free flame-retardant polyolefin sheath 4 by taking the wire core 1 as a central annular array, T-shaped convex strips 42 are uniformly distributed and formed on the outer wall of the annular sleeve of, and heat reflection plate mounting grooves 43 are formed between the two sides of the T-shaped convex strips 42 and the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath 4, and the heat reflection plates 5 are mounted on the reflection plate mounting grooves 43 of the two adjacent T-shaped convex strips 42 and positioned on the outer side of the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath 4.
Specifically, the heat reflection plate 5 sequentially comprises a silicon rubber bottom plate 51, a flame-retardant nylon reinforcing plate 52 and a heat reflection coating layer 53 from inside to outside, the flame-retardant nylon reinforcing plate 52 is adhered or hot-pressed on the outer side of the silicon rubber bottom plate 51, and the heat reflection coating layer 53 is coated on the surface of the flame-retardant nylon reinforcing plate 52.
The heat reflection coating layer 53 is formed by mixing and coating 33 parts of acrylic resin, 35 parts of titanium dioxide, 30 parts of modified nano particles, 2 parts of zinc oxide and 0.1 part of auxiliary agent on the surface of the flame-retardant nylon reinforced plate 52 according to the parts by weight.
The invention discloses a sun-proof fire-resistant cable, wherein a low-smoke halogen-free flame-retardant polyolefin sheath 4 is sleeved outside a protective layer 3 of the cable, a vacuum cavity 41 is uniformly distributed and formed in an annular array by taking a wire core 1 as a center in an annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath 4, the vacuum cavity 41 can reduce the heat conduction speed of the low-smoke halogen-free flame-retardant polyolefin sheath 4, T-shaped convex strips 42 are uniformly distributed and formed on the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath 4 by taking the wire core 1 as a center in the annular array, heat reflecting plate mounting grooves 43 are formed between two sides of the T-shaped convex strips 42 and the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath 4, heat reflecting plates 5 are mounted on the outer wall of the annular sleeve, the heat reflection coating layer 53 is prevented from being worn in the cable laying or transportation process, most of sunlight heat energy projected onto the cable can be reflected through the heat reflection plate 5, so that the aging speed of the cable influenced by the sunlight heat is reduced, and a sun-proof function is achieved; meanwhile, when a fire occurs, the ferrous oxide powder 31 and the charcoal strips 21 react to generate carbon dioxide to relieve the fire after the insulating layer 2 and the protective layer 3 are burnt and damaged, and the carbon dioxide gas is generated around the conductor core 1 of the cable to delay the conductor core 1 from being burnt out; has the characteristics of sun protection and fire resistance.
Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (4)
1. The utility model provides a sun-proof fire resisting cable, by interior including wire core (1), insulating layer (2) and protective layer (3) outward in proper order, its characterized in that: insulating layer (2) are cross-linked polyvinyl chloride plastic cover, it has charcoal strip (21) to use wire core (1) to embed as central annular array evenly distributed in insulating layer (2), protective layer (3) are the polyethylene plastic cover, it has ferrous oxide powder (31) to use wire core (1) to fill as central annular array evenly distributed in protective layer (3), ferrous oxide powder (31) and charcoal strip (21) one-to-one, the outside cover of protective layer (3) is equipped with low smoke and zero halogen flame retardant polyolefin sheath (4), it has vacuum chamber (41) to use wire core (1) as central annular array evenly distributed shaping in the annular cover of low smoke and zero halogen flame retardant polyolefin sheath (4), it has T shape sand grip (42) to use wire core (1) as central annular array evenly distributed shaping on the annular cover outer wall of low smoke and zero halogen flame retardant polyolefin sheath (4), form between the annular cover outer wall of both sides of T shape sand grip (42) and low smoke and zero halogen flame retardant polyolefin sheath (4), form The heat reflection plate mounting grooves (43) are arranged on the heat reflection plate mounting grooves (43) of the two adjacent T-shaped convex strips (42) and are positioned on the outer side of the outer wall of the annular sleeve body of the low-smoke halogen-free flame-retardant polyolefin sheath (4).
2. The sunproof fire resistant cable of claim 1, wherein: the heat reflection plate (5) sequentially comprises a silicon rubber bottom plate (51), a flame-retardant nylon reinforcing plate (52) and a heat reflection coating layer (53) from inside to outside, the flame-retardant nylon reinforcing plate (52) is adhered or hot-pressed to be formed on the outer side of the silicon rubber bottom plate (51), and the heat reflection coating layer (53) is coated on the surface of the flame-retardant nylon reinforcing plate (52).
3. The sun-blocking fire-resistant cable according to claim 2, wherein: the heat reflection coating layer (53) is formed by mixing 33 parts of acrylic resin, 35 parts of titanium dioxide, 30 parts of modified nano particles, 2 parts of zinc oxide and 0.1 part of auxiliary agent according to parts by weight and then coating the mixture on the surface of the flame-retardant nylon reinforced plate (52).
4. The sunproof fire resistant cable of claim 1, wherein: the mass ratio of the ferrous oxide powder (31) to the charcoal bars (21) is 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910132644.9A CN109727716B (en) | 2019-02-22 | 2019-02-22 | Sun-proof fire resisting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910132644.9A CN109727716B (en) | 2019-02-22 | 2019-02-22 | Sun-proof fire resisting cable |
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| Publication Number | Publication Date |
|---|---|
| CN109727716A CN109727716A (en) | 2019-05-07 |
| CN109727716B true CN109727716B (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910132644.9A Active CN109727716B (en) | 2019-02-22 | 2019-02-22 | Sun-proof fire resisting cable |
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| CN (1) | CN109727716B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071501A (en) * | 2020-08-12 | 2020-12-11 | 福建恒汇电缆有限公司 | Self-bearing fire-resistant flame-retardant coaxial high-voltage cable and manufacturing method thereof |
| CN113093355B (en) * | 2021-04-20 | 2022-04-15 | 四川天邑康和通信股份有限公司 | Double-side-by-side structure butterfly optical cable photoelectric hybrid cable and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206259206U (en) * | 2016-11-24 | 2017-06-16 | 清远浩和仪器设计有限公司 | A kind of commercial car carries fireproof cable |
| CN207182976U (en) * | 2017-09-07 | 2018-04-03 | 余姚市捷飞电器有限公司 | Halogen free wire |
| CN207441326U (en) * | 2017-11-08 | 2018-06-01 | 中冠新材料科技有限公司 | A kind of flexible fire-proof cable |
| CN207637545U (en) * | 2017-12-20 | 2018-07-20 | 合肥远发信息科技有限责任公司 | A kind of ceramic base flame retardant cable to work under hot environment |
| CN207895899U (en) * | 2018-02-26 | 2018-09-21 | 扬州迅祥电缆有限公司 | A kind of anti-water management cable of novel environmental protection flame retardant |
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2019
- 2019-02-22 CN CN201910132644.9A patent/CN109727716B/en active Active
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| CN109727716A (en) | 2019-05-07 |
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