CN210606739U - Ceramic mineral insulation high-temperature-resistant super-flexible fireproof cable - Google Patents
Ceramic mineral insulation high-temperature-resistant super-flexible fireproof cable Download PDFInfo
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- CN210606739U CN210606739U CN201922019394.6U CN201922019394U CN210606739U CN 210606739 U CN210606739 U CN 210606739U CN 201922019394 U CN201922019394 U CN 201922019394U CN 210606739 U CN210606739 U CN 210606739U
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Abstract
The utility model relates to a pottery mineral insulation fire prevention cable of nai high temperature and ultra-flexibility, by the copper conductor that forms of the even transposition of the fixed pitch of high-purity conductor copper monofilament more than 6, cladding aureola tape insulating layer and pottery mineral insulating layer constitute insulation core outside it, adopt glass fiber and inorganic mineral rope transposition to fill as the inorganic mineral filling layer between insulation core, then cladding fire-resistant insulating layer, fire-retardant isolation layer, fire protection layer, outer crowded package is steamed fire-retardant polyolefin outer jacket and is constituted the utility model discloses a fire prevention cable, it is high to have fire-resistant grade, compact structure zero clearance, characteristics that the compliance is good, can be applied to places such as hotel, station hospital, subway airport, medicine military, colliery iron and steel, public transport.
Description
Technical Field
The utility model relates to a fire prevention wire and cable technical field, concretely relates to pottery mineral insulation high temperature resistant super flexible fireproof cable.
Background
Along with the enhancement of people's awareness of environmental protection and fire safety, the application of fireproof cables is gradually expanding. At present, most of fireproof cables used in China adopt magnesium oxide mineral insulated cables and mica tape mineral insulated fireproof cables, but the magnesium oxide mineral insulated cables are high in manufacturing cost, large in installation and laying difficulty, low in insulation resistance due to the fact that moisture is easy to absorb, capable of transmitting power after being baked and low in stability; and mica tape mineral insulated cable lays in the turn or the mica tape easily drops under the impact of external force, under lasting high temperature or overload condition, causes the not good problem of cable stability such as electric leakage, short circuit, puncture very easily, and the continuous power supply can not obtain safe and reliable's guarantee.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that the stability of the fireproof cable in the prior art is poor under the high-temperature or overload condition, the ceramic mineral insulation high-temperature-resistant super-flexible fireproof cable is provided. The utility model discloses a fire prevention cable can be applied to needs to keep fire control, distribution, illumination and alarm system that the complete performance of cable required under the fire condition in environments such as hotel, hospital station, subway airport, medical military, steel and iron coal mine, public transport, has that fire-resistant grade is high, compact structure zero clearance, the characteristics that the compliance is good.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a ceramic mineral insulated high-temperature-resistant ultra-flexible fireproof cable comprises a cable core, a fireproof heat-insulating layer, a flame-retardant isolation layer, a fireproof protection layer and a halogen-free flame-retardant polyolefin outer protection layer in sequence from inside to outside;
the cable core consists of insulating wire cores and an inorganic mineral filling layer filled between the insulating wire cores; each insulated wire core is sequentially provided with a stranded copper conductor, a phlogopite tape insulating layer and a ceramic mineral insulating layer from inside to outside;
the insulating layer of the phlogopite tape is a phlogopite tape layer, and the structure of the phlogopite tape consists of a phlogopite paper base layer, a glass fiber cloth layer and a carbon-free thin film layer, wherein the glass fiber cloth layer is bonded on one surface of the phlogopite paper base layer through a binder, the carbon-free thin film layer is bonded on the other surface of the phlogopite paper base layer through a binder, and the thickness of the phlogopite tape insulating layer is more than or equal to 0.35 mm;
the ceramic mineral insulating layer is a ceramic polyolefin material layer, and the thickness of the ceramic mineral insulating layer is 0.7 mm-2.0 mm.
The inorganic mineral gold mica tape is glass fiber reinforced, the thickness of the layer is more than or equal to 0.35mm, the insulation resistance of the insulation wire core can be effectively improved, the electrical performance between phase lines is ensured, and meanwhile, the inorganic mineral gold mica tape has good high temperature resistance and heat insulation characteristics, can effectively block heat, reduces the temperature of a conductor, and ensures that the continuous power supply of a cable can be safely and reliably ensured; the ceramic mineral insulating layer has good mechanical and physical properties and excellent insulating properties at normal temperature, can be rapidly formed into a firm and compact ceramic armor body at high temperature, does not crack or fall off, prevents high-temperature erosion, has good fire-insulating and heat-insulating effects, and ensures continuous and effective operation of a cable.
Furthermore, the number of the insulated wire cores is 1-5; the stranded copper conductor contains at least 6 conductor copper wires. The conductor is guaranteed to have excellent flexibility and extensibility, and the basis for realizing super flexibility of the cable is provided.
Further, the inorganic mineral filling layer is a glass fiber and inorganic mineral rope twisted filling layer. The cable has the functions of tightening the cable core, isolating fire and heat and reducing the temperature of the core wire.
Furthermore, the fire-resistant heat-insulating layer and the fire-resistant protective layer are alkali-free glass fiber belt layers, each alkali-free glass fiber belt layer is composed of a plurality of layers of alkali-free glass fiber belts, the thickness of each alkali-free glass fiber belt layer is 0.20mm, and the thickness of each alkali-free glass fiber belt layer is more than or equal to 0.6 mm. The alkali-free glass fiber tape is used as the fire-resistant heat-insulating layer and the fire-proof protective layer, so that the structural strength of the cable is enhanced, and the cable core is protected.
Further, the material of the flame-retardant isolation layer is magnesium hydroxide or aluminum hydroxide, and the thickness of the flame-retardant isolation layer is 1.5 mm. The cable can effectively insulate fire and heat, reduce high-temperature flame impact and improve the structural strength of the cable.
Further, the halogen-free flame-retardant polyolefin outer protective layer is made of an A-type flame-retardant polyolefin protective sleeve material.
The beneficial technical effects are as follows: the utility model discloses well transposition copper conductor is formed by the even transposition of the fixed pitch of the high-purity conductor copper monofilament more than 6, and at its outer cladding aureola area insulating layer and ceramic mineral insulating layer constitution insulating core, adopt glass fiber and inorganic mineral rope transposition to fill as the inorganic mineral filling layer between insulating core, then cladding fire-resistant insulating layer, fire-retardant isolation layer, fire protection layer, the outer crowded package is steamed fire-retardant polyolefin outer jacket and constitutes the utility model discloses a fire-proof cable, compact structure, aureola area insulating layer neither can embrittle and drop, also can not absorb moisture and damp, makes the continuous power supply of cable can obtain safe and reliable guarantee; the fire-resistant heat-insulating layer is arranged inside the fire-resistant isolating layer, the fire-resistant protective layer is arranged outside the fire-resistant isolating layer, fire insulation and heat insulation are achieved, effective cooling can be achieved, the interior of the cable is guaranteed to be in a low-temperature state, and the integrity of a circuit of the cable is kept at a high flame temperature; the ceramic mineral insulation structure can rapidly generate ceramic armor bodies at high temperature, and the armor bodies are compact, fire-proof, heat-insulating, non-cracking, non-toxic and environment-friendly. Function guarantees above the utility model discloses a fireproof cable can keep its complete performance under the conflagration condition, has characteristics such as fire-resistant grade height, compact structure zero clearance, nontoxic environmental protection, and cable length can be according to the big length delivery of whole root of demand, and the installation of being convenient for is laid.
Drawings
Fig. 1 is a schematic structural diagram of a ceramic mineral insulated high-temperature-resistant ultra-flexible fireproof cable according to embodiment 1.
The cable comprises a cable core 1, an insulation wire core 11, an inorganic mineral filling layer 12, a 111-stranded copper conductor, a 112-phlogopite tape insulation layer, a 113-ceramic mineral insulation layer, a 2-fire-resistant thermal insulation layer, a 3-flame-retardant isolation layer, a 4-fire-retardant protection layer and a 5-halogen-free flame-retardant polyolefin outer protection layer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the scope of the invention is not limited thereto.
Example 1
According to the ceramic mineral insulation high-temperature-resistant ultra-flexible fireproof cable, at least 6 high-purity copper monofilaments are stranded into a copper conductor, a phlogopite tape insulation layer covers the stranded copper conductor, a ceramic mineral insulation layer is extruded outside the phlogopite tape insulation layer, so that an insulation wire core is formed, and an inorganic mineral filling layer is filled among 4 insulation wire cores, so that a cable core is formed; the cable core is sequentially coated with an inorganic mineral filling layer and a fire-resistant heat insulation layer, the fire-resistant heat insulation layer is externally extruded with a fire-resistant isolation layer, then coated with a fire-resistant protection layer, and finally extruded with a halogen-free fire-resistant polyolefin outer sheath as an outer sheath.
Specifically, the structure of the fireproof cable is as shown in fig. 1, and the structure from inside to outside sequentially comprises a cable core 1, a fire-resistant heat-insulating layer 2, a flame-retardant isolation layer 3, a fireproof protection layer 4 and a halogen-free flame-retardant polyolefin outer protection layer 5; the cable core 1 consists of 4 insulated wire cores 11 and an inorganic mineral filling layer 12 filled among the insulated wire cores 11; each insulated wire core 11 sequentially comprises a stranded copper conductor 111, a phlogopite tape insulating layer 112 and a ceramic mineral insulating layer 113 from inside to outside;
the stranded copper conductor 111 comprises at least 6 conductor bare copper wires which are uniformly stranded at fixed pitch, so that the conductor has excellent bending property and extensibility, and the stranded copper conductor is a basis for realizing super flexibility of the cable;
the insulating layer 112 of the phlogopite tape is composed of a phlogopite paper base layer, a glass fiber cloth layer and a carbon-free thin film layer, wherein the glass fiber cloth layer is bonded on one surface of the phlogopite paper base layer through organic silicon resin glue, the carbon-free thin film layer is bonded on the other surface of the phlogopite paper base layer through organic silicon resin glue, the thickness of the layer is larger than or equal to 0.35mm, the material of the carbon-free thin film layer is a polyimide film, the phlogopite tape insulating layer cannot be brittle and fall off, and cannot absorb moisture and damp, the insulating resistance of an insulating wire core can be effectively improved, the electrical performance between phase lines is ensured, meanwhile, the high-temperature-resistant and heat-insulating properties are good, heat can be effectively blocked, the conductor temperature is reduced, and the continuous power;
the ceramic mineral insulating layer 113 is a ceramic polyolefin material layer, and the ceramic polyolefin material of the ceramic mineral insulating layer has good mechanical and physical properties and excellent insulating properties at normal temperature, can be rapidly formed into a firm and compact ceramic armor body at high temperature, does not crack or fall off, prevents high-temperature erosion, has good fire-insulating and heat-insulating effects, and ensures continuous and effective operation of the cable; compared with the common ceramic silicon rubber, the ceramic polyolefin material has low cost, easy processing and no pollution, because the ceramic silicon rubber can generate silicon dioxide powder after burning, the pollution is larger;
the inorganic mineral filling layer 12 is formed by stranding glass fibers and inorganic mineral ropes to form an inorganic mineral filling layer, and the inorganic mineral filling layer is formed by stranding the glass fibers and the inorganic mineral ropes to play roles in tightening cable cores, insulating fire and heat and reducing the temperature of core wires;
the alkali-free glass fiber tape layer is composed of a plurality of layers of alkali-free glass fiber tapes, the thickness of each layer of alkali-free glass fiber tape is 0.20mm, the thickness of the formed alkali-free glass fiber tape layer is 0.6mm, the alkali-free glass fiber tapes are used as the fire-resistant heat-insulating layer and the fire-resistant protective layer, the cable has the advantages of enhancing the structural strength of the cable, protecting the cable core, bearing the high temperature of more than 800 ℃, having higher tensile strength which can reach 900MPa/25mm, increasing the structural strength of the cable core and ensuring the integrity of the cable;
the flame-retardant isolation layer 3 is made of magnesium hydroxide or aluminum hydroxide materials, can rapidly generate ceramic armor bodies at high temperature, is compact, has fire and heat insulation, does not crack, is non-toxic and environment-friendly, and can effectively insulate fire and heat, reduce high-temperature flame impact and improve the structural strength of the cable;
the fire-resistant heat-insulating layer 2 is arranged inside the fire-resistant isolation layer 3, the fire-resistant protective layer 4 is arranged outside the fire-resistant isolation layer 3 to protect the fire-resistant isolation layer 3, the fire-resistant isolation layer 3 is prevented from being embrittled and falling off due to high-temperature erosion in flame, the overall structure of the cable is protected, the interior of the cable is ensured to be in a low-temperature state, and the integrity;
the halogen-free flame-retardant polyolefin outer protective layer 5 adopts an A-type flame-retardant polyolefin sheath material as the outer protective layer, and has the characteristics of no halogen, low smoke, no toxicity, environmental friendliness and good flame-retardant effect.
Right the utility model discloses a fireproof cable carries out fire resistance test, insulation resistance and flexibility test.
The utility model discloses a fireproof cable fire resistance test can satisfy the regulation of C (950 ℃ C. +/-40 ℃, only fire-resistant), W (650 ℃ C. +/-40 ℃, spray), Z (950 ℃ C. +/-40 ℃, mechanical shock) in the BS 6387 standard, satisfies the test that bears fire-resistant, sprays, assaults on same root cable of regulation in the BS 8491 standard, satisfies 950 ℃, 180 min's fire resistance test.
The utility model discloses an insulation resistance under the fireproof cable ambient temperature is greater than 1000M omega, and when cable length was less than 100M, insulation resistance can reach 10000M omega.
The utility model discloses a fireproof cable has super flexibility, and minimum bend radius can reach 4D (D is the cable diameter, and ordinary cable bend radius is 15D ~ 20D usually), satisfies the installation and lays the turn requirement, is real super flexibility fireproof cable.
Claims (5)
1. A ceramic mineral insulated high-temperature-resistant ultra-flexible fireproof cable is characterized by sequentially comprising a cable core (1), a fireproof heat-insulating layer (2), a flame-retardant isolation layer (3), a fireproof protection layer (4) and a halogen-free flame-retardant polyolefin outer protection layer (5) from inside to outside;
the cable core (1) consists of insulated wire cores (11) and an inorganic mineral filling layer (12) filled between the insulated wire cores (11); each insulated wire core (11) is sequentially provided with a stranded copper conductor (111), a phlogopite tape insulating layer (112) and a ceramic mineral insulating layer (113) from inside to outside;
the structure of the insulating layer (112) of the phlogopite tape comprises a phlogopite paper base layer, a glass fiber cloth layer and a carbon-free thin film layer, wherein the glass fiber cloth layer is bonded on one surface of the phlogopite paper base layer through a binder, the carbon-free thin film layer is bonded on the other surface of the phlogopite paper base layer through the binder, and the thickness of the phlogopite tape insulating layer (112) is more than or equal to 0.35 mm;
the ceramic mineral insulating layer (113) is a ceramic polyolefin material layer, and the thickness of the ceramic mineral insulating layer is 0.7 mm-2.0 mm.
2. The ceramic mineral insulation high-temperature-resistant ultra-flexible fireproof cable according to claim 1, wherein the number of the insulation wire cores (11) is 1-5; the twisted copper conductor (111) contains at least 6 conductor copper wires.
3. The ceramified mineral-insulated high-temperature-resistant ultra-flexible fireproof cable according to claim 1, wherein the inorganic mineral filler layer (12) is a glass fiber and inorganic mineral rope twisted filler layer.
4. The ceramized mineral insulated high-temperature-resistant ultra-flexible fireproof cable according to claim 1, wherein the fire-resistant insulation layer (2) and the fire-resistant protective layer (4) are alkali-free glass fiber tape layers, each alkali-free glass fiber tape layer is composed of multiple alkali-free glass fiber tapes, the thickness of each alkali-free glass fiber tape layer is 0.20mm, and the thickness of each alkali-free glass fiber tape layer is more than or equal to 0.6 mm.
5. A ceramicized mineral insulated fire resistant ultra-flexible fireproof cable according to claim 1, wherein the material of the fire retardant barrier layer (3) is magnesium hydroxide or aluminum hydroxide with a thickness of 1.5 mm.
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| CN201922019394.6U CN210606739U (en) | 2019-11-21 | 2019-11-21 | Ceramic mineral insulation high-temperature-resistant super-flexible fireproof cable |
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| CN201922019394.6U CN210606739U (en) | 2019-11-21 | 2019-11-21 | Ceramic mineral insulation high-temperature-resistant super-flexible fireproof cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112750562A (en) * | 2020-12-29 | 2021-05-04 | 贵州新曙光电缆有限公司 | Flexible mineral insulation fireproof cable |
| CN113628788A (en) * | 2021-08-12 | 2021-11-09 | 广东远光电缆实业有限公司 | Manufacturing method of flexible mineral insulation fireproof cable |
| CN115910456A (en) * | 2022-11-07 | 2023-04-04 | 河南华东电缆股份有限公司 | High-temperature-resistant fireproof cable and preparation method thereof |
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2019
- 2019-11-21 CN CN201922019394.6U patent/CN210606739U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112750562A (en) * | 2020-12-29 | 2021-05-04 | 贵州新曙光电缆有限公司 | Flexible mineral insulation fireproof cable |
| CN113628788A (en) * | 2021-08-12 | 2021-11-09 | 广东远光电缆实业有限公司 | Manufacturing method of flexible mineral insulation fireproof cable |
| CN113628788B (en) * | 2021-08-12 | 2022-03-01 | 广东远光电缆实业有限公司 | Manufacturing method of flexible mineral insulation fireproof cable |
| CN115910456A (en) * | 2022-11-07 | 2023-04-04 | 河南华东电缆股份有限公司 | High-temperature-resistant fireproof cable and preparation method thereof |
| CN115910456B (en) * | 2022-11-07 | 2023-11-14 | 河南华东电缆股份有限公司 | High-temperature-resistant fireproof cable and preparation method thereof |
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