CN216053932U - Environment-friendly track traffic flexible fire-resistant cable - Google Patents
Environment-friendly track traffic flexible fire-resistant cable Download PDFInfo
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- CN216053932U CN216053932U CN202120772889.0U CN202120772889U CN216053932U CN 216053932 U CN216053932 U CN 216053932U CN 202120772889 U CN202120772889 U CN 202120772889U CN 216053932 U CN216053932 U CN 216053932U
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- environment
- track traffic
- conductor
- flexible fire
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- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 239000010445 mica Substances 0.000 claims abstract description 19
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 19
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 14
- 239000003365 glass fiber Substances 0.000 claims abstract description 12
- 229920000098 polyolefin Polymers 0.000 claims abstract description 12
- 239000004698 Polyethylene Substances 0.000 claims abstract description 6
- -1 polyethylene Polymers 0.000 claims abstract description 6
- 229920000573 polyethylene Polymers 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims abstract description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 4
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 206010000369 Accident Diseases 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229910052628 phlogopite Inorganic materials 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
An environment-friendly track traffic flexible fire-resistant cable comprises a plurality of cable cores, and a ceramic polyolefin oxygen isolation layer and a low-smoke halogen-free sheath layer which are sequentially wrapped outside the cable cores; the cable core comprises a conductor, a wrapped mica tape layer and a polyethylene insulating layer in sequence from inside to outside, and alkali-free glass fiber is filled between the cable core and the inorganic glass tape layer.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to an environment-friendly track traffic flexible fire-resistant cable.
Background
It is known that the fire caused by electrical causes accounts for about 50% of the fire in China, and when a fire occurs, flame may ignite insulation and sheath materials in the traditional electric wire and cable, so that a large amount of smoke and toxic and harmful gas are generated, and the fire accident is further expanded; particularly in the occasions with narrow space, dense personnel and high humidity, such as a track traffic underground station and the like, once a fire accident occurs, a large amount of smoke and toxic and harmful gas can cause greater hazard of the disaster, and fire fighting, smoke exhaust and ventilation and personnel evacuation are more difficult; if the power supply safety of fire-fighting cables such as a control circuit of fire-fighting equipment, a signal transmission circuit of a fire automatic alarm system, a fire-fighting broadcast circuit, a fire-fighting telephone circuit and the like cannot be ensured, a correct fire-fighting and evacuation mode is started, and greater life and property loss is easily caused; therefore, in summary, there is a need for an environmentally friendly cable with high fire resistance in the market.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model discloses an environment-friendly track traffic flexible fire-resistant cable.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an environment-friendly track traffic flexible fire-resistant cable comprises a plurality of cable cores, and a ceramic polyolefin oxygen isolation layer and a low-smoke halogen-free sheath layer which are sequentially wrapped outside the cable cores; the cable core sequentially comprises a conductor, a lapping mica tape layer and a polyethylene insulating layer from inside to outside, and alkali-free glass fiber is filled between the cable core and the inorganic glass tape layer;
preferably, the lapped mica tape layer is extruded with a crosslinked polyethylene insulating layer;
preferably, the mica tape in the lapping mica tape layer is a phlogopite tape;
preferably, the ceramic polyolefin oxygen-isolating layer is a combined structure of a first glass fiber tape wrapping, a ceramic polyolefin extrusion wrapping and a second glass fiber tape wrapping;
preferably, 3-4 layers of mica tape are wrapped outside the conductor;
preferably, the outer diameter of the conductor is 1.68 ± 0.01mm, and the nominal diameter of the stranded conductor is 15.5-16.5mm and the outer diameter of the conductor is 4.5-5.5mm by adopting 1+6 normal stranding.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
according to the environment-friendly track traffic flexible fire-resistant cable disclosed by the utility model, the low-smoke halogen-free sheath layer can quickly generate an expansion reaction when a fire disaster occurs to form a compact porous carbon layer, so that the flame is prevented from spreading, and because the low-smoke halogen-free sheath does not contain halogen, a small amount of white smoke can be generated in the case of the fire disaster, toxic black smoke cannot be generated, and the environment-friendly track traffic flexible fire-resistant cable further has an environment-friendly function; the ceramic polyolefin oxygen-insulating layer can be fired into a hard armor shell under the conditions of flame existence and no flame at the temperature of 350-1600 ℃, the higher the temperature and the longer the time are, the harder the ceramic armor body after firing is, compact cellular fine micropores can be formed in the ceramic armor body in the ablation process, and a layer of porcelain glaze film can be formed on the surface of the ceramic armor body, so that the ceramic polyolefin oxygen-insulating layer has excellent effects of fire resistance, fire blocking, heat insulation and temperature insulation.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention.
In the figure: 1. a conductor; 2. wrapping a mica tape layer; 3. a polyethylene insulating layer; 4. alkali-free glass fiber 5 and a glass fiber belt I; 6. a ceramized polyolefin oxygen barrier layer; 7. a second glass fiber belt; 8. low smoke zero halogen sheath layer.
Detailed Description
The present invention will be explained in detail by the following embodiments, and the purpose of disclosing the utility model is to protect all technical improvements within the scope of the present invention, and in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., it is only corresponding to the drawings of the present application, and for convenience of describing the present invention, it is not intended to indicate or imply that the referred device or element must have a specific orientation.
The environment-friendly flexible fire-resistant cable for rail transit, which is described in the attached drawing 1, comprises a plurality of cable cores, and a ceramic polyolefin oxygen-insulating layer 6 and a low-smoke halogen-free sheath layer 8 which are sequentially wrapped outside the cable cores, wherein the low-smoke halogen-free sheath layer 8 can rapidly perform an expansion reaction when a fire disaster occurs to form a compact porous carbon layer, so that the flame is prevented from spreading, and the low-smoke halogen-free sheath does not contain halogen, so that a small amount of white smoke can be generated in the case of the fire disaster, toxic black smoke cannot be generated, and the environment-friendly flexible fire-resistant cable has an environment-friendly function; the ceramic polyolefin oxygen-insulating layer 6 can be fired into a hard armor shell under the conditions of flame existence and no flame at the temperature of 350-;
the cable core sequentially comprises a conductor 1, a wrapped mica tape layer 2 and a polyethylene insulating layer 3 from inside to outside, in addition, the wrapped mica tape layer 2 is extruded with a crosslinked polyethylene insulating layer 3, so that polyethylene molecules are changed into a three-dimensional reticular structure from a linear molecular structure, thermoplastic materials are changed into thermosetting materials, the working temperature is increased from 70 ℃ to 90 ℃, the current carrying capacity of the cable is obviously improved, the crosslinked polyethylene insulating cable has excellent insulating property, heat resistance, mechanical property and chemical resistance, the cable is suitable for the fields of power distribution networks and the like, has the advantages that the PVC insulating cable cannot compare with the PVC insulating cable, the mica tape in the wrapped mica tape layer 2 is a golden mica tape according to needs, particularly, the conductor 1 is wrapped with 3-4 layers of mica tapes, the insulating property of the outer insulating structure of the conductor 1 at normal temperature is ensured, and the insulating property at high temperature is also ensured, in addition, the outer diameter of the conductor 1 is 1.68 +/-0.01 mm, normal stranding of 1+6 is adopted, the nominal diameter of the stranded conductor 1 is 15.5-16.5mm, and the outer diameter of the conductor 1 is 4.5-5.5mm, so that the structure is stable and reliable, the conductor is not easy to loosen and has good roundness, the surface electric field of the conductor 1 is uniform, and the insulated electrical property is excellent;
the alkali-free glass fiber 4 is filled between the cable core and the inorganic glass tape layer, and the alkali-free glass fiber 4 has the advantages of good chemical stability, high electrical insulation performance, high strength, no toxicity, no harm, high heat resistance temperature of more than 660 ℃, and no harmful smoke generated after being heated.
The utility model is not described in detail in the prior art, and it is apparent to a person skilled in the art that the utility model is not limited to details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides an environment-friendly track traffic flexible fire resisting cable, includes a plurality of cable core, characterized by: and a ceramic polyolefin oxygen-isolating layer (6) and a low-smoke halogen-free sheath layer (8) which are sequentially wrapped outside the cable core; the cable core sequentially comprises a conductor (1), a wrapped mica tape layer (2) and a polyethylene insulating layer (3) from inside to outside, and alkali-free glass fibers (4) are filled between the cable core and the inorganic glass tape layer.
2. The environment-friendly track traffic flexible fire-resistant cable according to claim 1, which is characterized in that: and the lapping mica tape layer (2) is extruded with a crosslinked polyethylene insulating layer (3).
3. The environment-friendly track traffic flexible fire-resistant cable according to claim 1, which is characterized in that: the mica tape in the lapping mica tape layer (2) is a golden mica tape.
4. The environment-friendly track traffic flexible fire-resistant cable according to claim 1, which is characterized in that: the ceramic polyolefin oxygen-isolating layer (6) is a combined structure of a first glass fiber tape (5) wrapping, a ceramic polyolefin extrusion wrapping and a second glass fiber tape (7) wrapping.
5. The environment-friendly track traffic flexible fire-resistant cable according to claim 1, which is characterized in that: 3-4 layers of mica tape are wrapped outside the conductor (1).
6. The environment-friendly track traffic flexible fire-resistant cable according to claim 1, which is characterized in that: the outer diameter of the conductor (1) is 1.68 +/-0.01 mm, and with 1+6 normal stranding, the nominal diameter of the stranded conductor (1) is 15.5-16.5mm, namely the outer diameter of the conductor (1) is 4.5-5.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120772889.0U CN216053932U (en) | 2021-04-15 | 2021-04-15 | Environment-friendly track traffic flexible fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120772889.0U CN216053932U (en) | 2021-04-15 | 2021-04-15 | Environment-friendly track traffic flexible fire-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216053932U true CN216053932U (en) | 2022-03-15 |
Family
ID=80534337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120772889.0U Active CN216053932U (en) | 2021-04-15 | 2021-04-15 | Environment-friendly track traffic flexible fire-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216053932U (en) |
-
2021
- 2021-04-15 CN CN202120772889.0U patent/CN216053932U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240719 Address after: 451450 Room 001, 7th Floor, Zhongmu Creative Center, Intersection of Chenyang Road and Jingxin Street, Zhengzhou International Cultural and Creative Industry Park, Liuji Town, Zhongmu County, Zhengzhou City, Henan Province Patentee after: Ruixu (Henan) Technology Group Co.,Ltd. Country or region after: China Address before: No. 699, plain road, Xinxiang, Henan, Henan Patentee before: HENAN INSTITUTE OF TECHNOLOGY Country or region before: China |