CN214796794U

CN214796794U - Environment-friendly metal sheath mineral insulation fireproof cable

Info

Publication number: CN214796794U
Application number: CN202121053266.4U
Authority: CN
Inventors: 唐敏; 吴小敏; 朱勤芬; 周俊; 刘学宝
Original assignee: Sinostar Cable Co ltd
Current assignee: Sinostar Cable Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-11-19
Anticipated expiration: 2031-05-18

Abstract

The utility model relates to an environment-friendly metal sheath mineral insulation fireproof cable, it includes the conductor outside is equipped with the mica tape outside is equipped with ceramic silicon rubber insulating layer, and a plurality of insulation core are circumscribed to set up and constitute the cable core clearance is equipped with mineral filling the cable core and mineral filling outside are equipped with alkali-free glass fiber around the band alkali-free glass fiber is equipped with the oxygen-insulated inner sheath around the band outside the oxygen-insulated inner sheath outside is equipped with aluminum alloy interlocking armor the aluminum alloy interlocking armor outside is equipped with semi-conductive thermosetting elastomer layer the outside of semi-conductive thermosetting elastomer layer is equipped with the intumescent fire-retardant layer the outside of intumescent fire-retardant layer is equipped with high fire-retardant protection against rodents ant low smoke and zero halogen polyolefin sheath. The utility model discloses have green, safe and reliable, fire prevention fire behavior, good electrical transmission performance has low cigarette, no halogen, low toxicity, protection against rodents ant and anti mechanical load characteristic.

Description

Environment-friendly metal sheath mineral insulation fireproof cable

Technical Field

The utility model relates to a cable, concretely relates to fireproof cable.

Background

The infrastructure and engineering construction projects of China are numerous, and the fireproof cable market of China has a huge potential development space. The mineral insulated cable market is huge due to its excellent fire resistance. Mineral Insulated fireproof Cable (Mineral Insulated Cable) is abbreviated MI Cable. The mineral insulated cable is the assumption proposed by the engineer Arnold Francois Borel at the end of the 19 th century, and develops rapidly after 1934 + 1936 in English investment. China was also developed in the sixties of the last century, and started to be used in the military field, and the middle 80 s started to be industrially produced and gradually and comprehensively accepted by the building field. The cable conductor is made of a copper conductor, the insulation is made of mineral, and the jacket is made of copper. The above materials (all inorganic materials) determine that the cable has incomparable excellent fireproof performance. At present, the cable is widely applied to occasions such as high-rise buildings, petrochemical industry, airports, tunnels, ships, offshore oil platforms, aerospace, ferrous metallurgy, shopping centers, parking lots and the like.

For the production of the products, the performance requirements of the current domestic partial design are single and have defects.

Disclosure of Invention

The purpose of the invention is as follows: the utility model aims at overcoming the not enough among the prior art, provide one kind and have green, safe and reliable, fire prevention fire behaviour, good electrical transmission performance, have low cigarette, no halogen, low toxicity, protection against rodents ant and the environment-friendly metal sheath mineral insulation fireproof cable of anti mechanical load characteristic.

The technical scheme is as follows: in order to solve the technical problem, the utility model relates to an environment-friendly metal sheath mineral insulation fireproof cable, which comprises a conductor, a mica tape is arranged outside the conductor, a ceramic silicon rubber insulating layer is arranged outside the mica tape, the conductor, the mica tape and the ceramic silicon rubber insulating layer form an insulating wire core, a plurality of insulating wire cores are externally tangent to form a cable core, mineral fillers are arranged in the gap of the cable core, alkali-free glass fiber wrapping tapes are arranged outside the cable core and the mineral fillers, an oxygen-insulating inner sheath is arranged outside the alkali-free glass fiber wrapping tape, an aluminum alloy interlocking armor layer is arranged outside the oxygen-insulating inner sheath, the aluminum alloy interlocking armor layer is externally provided with a semiconductive thermosetting elastomer layer, an expansion type flame-retardant layer is arranged outside the semiconductive thermosetting elastomer layer, and a high flame-retardant rat/ant-proof low-smoke halogen-free polyolefin sheath is arranged outside the expansion type flame-retardant layer.

Further, the conductor is an annealed soft copper conductor.

Further, the cross-sectional area of the conductor is 2.5-240mm²。

Further, the mica tape is a double-layer mica tape.

Further, five insulated wire cores are arranged.

Further, the semiconductive thermosetting elastomer layer has a thickness of 0.8-1 mm.

Further, the intumescent flame retardant layer is a polypropylene flame retardant intumescent layer, and the thickness of the intumescent flame retardant layer is 0.5-0.7 mm.

Has the advantages that: compared with the prior art, the utility model, it is showing the advantage and is: the utility model has the advantages of reasonable overall structure, adopt double-deck mica tape, the coefficient of expansion is little, dielectric strength is big, the resistivity is high and dielectric constant is even, adopt ceramic silicon rubber insulating layer, this insulation has splendid fire prevention, it is fire-retardant, low cigarette, characteristics such as nontoxic, its residue is hard ceramic shell after burning, the crust does not melt and does not drip in fire hazard environment, be applicable to any place that needs the fire prevention, adopt the mineral filling layer, have fire prevention, it is fire-resistant, high temperature resistant, separate the temperature, thermal-insulated advantage such as, and better fire-retardant endothermic performance, adopt the fine fibrous tape of alkali-free glass, insulating properties is good, the pulling force is very strong, can not wrinkle, rupture is resistant, smokeless halogen-free nontoxic, pure oxygen is incombustible, adopt the oxygen-insulating inner sheath, not only have good mechanical physical properties, oil resistance, electrical property, fire resistance and processing technology performance, and have halogen-free, The interlocking armor layer of aluminum alloy is adopted, play better guard action to the cable of the inside, it is flexible, resistance to compression is shock-resistant, simple to operate, can directly bury and exempt from the pipeline and lay, effectively improve the fire-retardant fire-resistant rank of cable, adopt semi-conductive thermosetting elastomer layer, play the effect of anti external force impact, adopt the intumescent fire-retardant layer, when the cable burns, the intumescent fire-retardant layer can form fluffy charcoal foam layer, with outside heat, oxygen isolated, adopt high fire-retardant protection rat-ant low smoke zero halogen polyolefin sheath, have excellent rat-ant prevention, fire-retardant, there is no halogen, performance such as low smoke, produce moisture during high temperature combustion, play cooling and fire-proof effect.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in figure 1, the utility model relates to an environment-friendly metal sheath mineral insulation fireproof cable, it includes conductor 1, conductor 1 is annealing soft copper conductor and the sectional area is 2.5-240mm²The outer portion of the conductor 1 is provided with a double-layer mica tape 2, the outer portion of the mica tape 2 is provided with a ceramic silicon rubber insulating layer 3, the conductor 1, the mica tape 2 and the ceramic silicon rubber insulating layer 3 form an insulating wire core, five insulating wire cores are externally tangent to form a cable core, a mineral filler 4 is arranged in a cable core gap, an alkali-free glass fiber wrapping tape 5 is arranged outside the cable core and the mineral filler 4, an oxygen-isolating inner jacket 6 is arranged outside the alkali-free glass fiber wrapping tape 5, an aluminum alloy interlocking armor layer 7 is arranged outside the oxygen-isolating inner jacket 6, and a semi-conductive thermosetting bullet is arranged outside the aluminum alloy interlocking armor layer 7The thickness of the semiconductive thermosetting elastomer layer 8 is 0.8-1mm, an intumescent flame retardant layer 9 is arranged outside the semiconductive thermosetting elastomer layer 8, the intumescent flame retardant layer 9 is a polypropylene flame retardant intumescent layer, the thickness of the intumescent flame retardant layer is 0.5-0.7mm, and a high-flame-retardant rat/ant-prevention low-smoke halogen-free polyolefin sheath 10 is arranged outside the intumescent flame retardant layer 9. The utility model has the advantages of reasonable overall structure, adopt double-deck mica tape, the coefficient of expansion is little, dielectric strength is big, the resistivity is high and dielectric constant is even, adopt ceramic silicon rubber insulating layer, this insulation has splendid fire prevention, it is fire-retardant, low cigarette, characteristics such as nontoxic, its residue is hard ceramic shell after burning, the crust does not melt and does not drip in fire hazard environment, be applicable to any place that needs the fire prevention, adopt the mineral filling layer, have fire prevention, it is fire-resistant, high temperature resistant, separate the temperature, thermal-insulated advantage such as, and better fire-retardant endothermic performance, adopt the fine fibrous tape of alkali-free glass, insulating properties is good, the pulling force is very strong, can not wrinkle, rupture is resistant, smokeless halogen-free nontoxic, pure oxygen is incombustible, adopt the oxygen-insulating inner sheath, not only have good mechanical physical properties, oil resistance, electrical property, fire resistance and processing technology performance, and have halogen-free, The interlocking armor layer of aluminum alloy is adopted, play better guard action to the cable of the inside, it is flexible, resistance to compression is shock-resistant, simple to operate, can directly bury and exempt from the pipeline and lay, effectively improve the fire-retardant fire-resistant rank of cable, adopt semi-conductive thermosetting elastomer layer, play the effect of anti external force impact, adopt the intumescent fire-retardant layer, when the cable burns, the intumescent fire-retardant layer can form fluffy charcoal foam layer, with outside heat, oxygen isolated, adopt high fire-retardant protection rat-ant low smoke zero halogen polyolefin sheath, have excellent rat-ant prevention, fire-retardant, there is no halogen, performance such as low smoke, produce moisture during high temperature combustion, play cooling and fire-proof effect.

The utility model provides a thinking and method, the method and the way of specifically realizing this technical scheme are many, above only the utility model discloses a preferred embodiment should point out, to the ordinary technical personnel in this technical field, not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also be regarded as the utility model discloses a protection range, each component that does not make clear and definite in this embodiment all can be realized with prior art.

Claims

1. The utility model provides an environment-friendly metal sheath mineral insulation fireproof cable which characterized in that: the cable comprises a conductor (1), a mica tape (2) is arranged outside the conductor (1), a ceramic silicon rubber insulating layer (3) is arranged outside the mica tape (2), the conductor (1), the mica tape (2) and the ceramic silicon rubber insulating layer (3) form an insulating wire core, a plurality of insulating wire cores are externally tangent to form a cable core, mineral fillers (4) are arranged in a gap of the cable core, an alkali-free glass fiber wrapping tape (5) is arranged outside the cable core and the mineral fillers (4), an oxygen-isolating inner jacket (6) is arranged outside the alkali-free glass fiber wrapping tape (5), an aluminum alloy interlocking armor layer (7) is arranged outside the oxygen-isolating inner jacket (6), a semi-conductive thermosetting elastic layer (8) is arranged outside the aluminum alloy interlocking armor layer (7), and an expansion type flame retardant layer (9) is arranged outside the semi-conductive thermosetting elastic layer (8), and a high-flame-retardant rat and ant prevention low-smoke halogen-free polyolefin sheath (10) is arranged outside the expansion type flame-retardant layer (9).

2. The environmentally friendly metal-sheathed mineral-insulated fireproof cable of claim 1, wherein: the conductor (1) is an annealed soft copper conductor.

3. The environmentally friendly metal-sheathed mineral-insulated fireproof cable of claim 1, wherein: the cross section area of the conductor (1) is 2.5-240mm²。

4. The environmentally friendly metal-sheathed mineral-insulated fireproof cable of claim 1, wherein: the mica tape (2) is a double-layer mica tape.

5. The environmentally friendly metal-sheathed mineral-insulated fireproof cable of claim 1, wherein: five insulated wire cores are arranged.

6. The environmentally friendly metal-sheathed mineral-insulated fireproof cable of claim 1, wherein: the thickness of the semiconductive thermosetting elastomer layer (8) is 0.8-1 mm.

7. The environmentally friendly metal-sheathed mineral-insulated fireproof cable of claim 1, wherein: the expansion type flame-retardant layer (9) is a polypropylene flame-retardant expansion layer, and the thickness of the expansion type flame-retardant layer is 0.5-0.7 mm.