CN214753056U - Flexible mineral insulation fireproof cable with moisture-proof layer - Google Patents

Flexible mineral insulation fireproof cable with moisture-proof layer Download PDF

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Publication number
CN214753056U
CN214753056U CN202121408951.4U CN202121408951U CN214753056U CN 214753056 U CN214753056 U CN 214753056U CN 202121408951 U CN202121408951 U CN 202121408951U CN 214753056 U CN214753056 U CN 214753056U
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CN
China
Prior art keywords
fireproof cable
moisture
layer
flexible mineral
metal sheath
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Active
Application number
CN202121408951.4U
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Chinese (zh)
Inventor
杨兴伟
张晋
郭志伟
谢凯琴
王涛
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Jinbei electric (Chengdu) Co.,Ltd.
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Jinbei Ta Pai Cables Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Abstract

The utility model discloses a take flexible mineral insulation fireproof cable of dampproof course, including several sinle silks, the sinle silks include the copper core conductor and cladding insulating layer and dampproof course outside the copper core conductor in proper order, the copper core conductor is the circular shape many copper conductors by the cross-section and sticiss the transposition and constitute, after the transposition several sinle silks outer wall is equipped with zero halogen low smoke flame retardant belting, protective layer and oxygen barrier in proper order, the sinle silk is filled with the high fire-retardant filling rope with there being no halogen low smoke flame retardant belting, the outer welding of oxygen barrier has metal sheath. The utility model discloses in, this take flexible mineral insulation fireproof cable of dampproof course, simple structure, reasonable in design adopt the insulating layer to add the dampproof course and the setting that the oxygen layer was separated to the protective layer with, have solved among the prior art problem that the flexible fireproof cable sinle silk of mineral insulation easily receives the tide and leads to insulation resistance to reduce, and metal sheath easily breaks the problem that fire behavior descends, can effectively improve the practicality of the flexible fireproof cable of mineral insulation.

Description

Flexible mineral insulation fireproof cable with moisture-proof layer
Technical Field
The utility model relates to the technical field of cables, especially, relate to a take flexible mineral insulation fireproof cable of dampproofing course.
Background
The mineral insulation fireproof cable is made of inorganic materials such as copper, mica tapes, ceramic silicon rubber, halogen-free low-smoke flame-retardant polyolefin sheath materials and the like, so that the incomparable fireproof performance of the mineral insulation fireproof cable is determined. At present, mineral insulated cables are widely applied to occasions such as high-rise buildings, petrochemical industry, airports, tunnels, offshore oil platforms, aerospace and the like.
Mineral-insulated cables, while having excellent fire-resistant properties, also have some significant drawbacks: the cable is insulated by mica tapes, is easy to absorb moisture and damp, and cannot meet the power consumption requirement and cannot be repaired due to the reduction of the insulation performance after the moisture is absorbed; meanwhile, the metal sheath is not easy to bend and break in the construction process, the insulation and the damp are aggravated after the metal sheath breaks, and meanwhile, once the metal sheath breaks, the original fireproof performance is hardly met, certain potential safety hazards exist, and therefore the mineral insulation flexible fireproof cable with the moisture-proof layer is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take flexible mineral insulation fireproof cable of dampproof course, simple structure, reasonable in design adopt the insulating layer to add the dampproof course and the setting that the oxygen layer was separated to the protective layer, have solved among the prior art problem that the flexible fireproof cable sinle silk of mineral insulation easily receives the tide and leads to insulation resistance to reduce, and metal sheath easily breaks the problem that fire behavior descends, can effectively improve the practicality of the flexible fireproof cable of mineral insulation.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a take flexible mineral insulation fireproof cable of dampproof course, includes several sinle silks, the sinle silk includes copper core conductor and cladding insulating layer and dampproof course outside the copper core conductor in proper order, the copper core conductor is that circular shape many copper conductors sticiss the transposition by the cross-section and constitutes, after the transposition several sinle silks outer wall is equipped with halogen-free low fire-retardant band, protective layer and separates the oxygen layer in proper order, it has the high fire-retardant packing rope to fill between sinle silk and the fire-retardant band of halogen-free low smoke, it has metal sheath to separate the outer welding of oxygen layer, the outer cladding of metal sheath has non-metallic sheath.
As a further description of the above technical solution:
the insulation layer is a calcined mica tape, the moisture-proof layer is ceramic silicon rubber, and the moisture-proof layer is extruded on the outer wall of the insulation layer.
As a further description of the above technical solution:
the halogen-free low-smoke flame-retardant wrapping tape is fixed on the outer side of the wire core in a wrapping mode.
As a further description of the above technical solution:
the protective layer is a ceramic silicon rubber belt and is wrapped outside the halogen-free low-smoke flame-retardant wrapping belt.
As a further description of the above technical solution:
the oxygen isolation layer is made of ceramic silicon rubber and is coated on the outer wall of the protective layer through extrusion.
As a further description of the above technical solution:
the metal sheath is a copper strip and is welded outside the oxygen separation layer through argon arc welding.
As a further description of the above technical solution:
the non-metal sheath is made of ceramic halogen-free low-smoke polyolefin flame-retardant refractory material.
The utility model provides a take flexible mineral insulation fireproof cable of dampproofing course. The method has the following beneficial effects:
(1) this take flexible mineral insulation fireproof cable of dampproof course, simple structure, reasonable in design adopt insulating layer to add the dampproof course and the setting that the protective layer adds the oxygen layer that separates, have solved among the prior art problem that the flexible fireproof cable sinle silk of mineral insulation easily wets and lead to the insulation resistance to reduce, and the problem that metal sheath easily breaks fire behavior descends can effectively improve the practicality of the flexible fireproof cable of mineral insulation.
Drawings
Fig. 1 is a schematic structural view of a flexible mineral insulated fireproof cable with a moisture-proof layer according to the present invention;
fig. 2 is a schematic cross-sectional view of a flexible mineral insulated fireproof cable with a moisture barrier according to the present invention;
fig. 3 is a schematic cross-sectional view of the center core of the present invention.
Illustration of the drawings:
1. a copper-core conductor; 2. an insulating layer; 3. a moisture barrier; 4. a highly flame retardant filler rope; 5. halogen-free low-smoke flame-retardant wrapping tape; 6. a protective layer; 7. an oxygen barrier layer; 8. a metal sheath; 9. a non-metallic sheath; 10. and a wire core.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a flexible mineral insulation fireproof cable with a moisture-proof layer comprises a plurality of wire cores 10, wherein each wire core 10 comprises a copper core conductor 1, an insulating layer 2 and a moisture-proof layer 3 which are sequentially coated outside the copper core conductor 1, the copper core conductor 1 is formed by tightly pressing and twisting a plurality of copper conductors with circular cross sections, the plurality of copper conductors are tightly pressed and twisted, the pressing coefficient of the conductors is effectively improved, the outer diameter of the conductors is reduced, and gaps among the wire cores 10 are reduced, so that quality accidents of conductor oxidation caused by air and moisture entering the gaps among the conductors are reduced, the outer walls of the twisted plurality of wire cores 10 are sequentially provided with low-smoke halogen-free flame-retardant wrapping belts 5, a protective layer 6 and an oxygen-isolating layer 7, a high-flame-retardant filling rope 4 is filled between the wire cores 10 and the low-smoke-free flame-retardant wrapping belts 5, the high-retardant filling rope 4 can fill gaps among the wire cores 10 and the low-smoke-retardant wrapping belts, so that the gaps among the wire cores 10 after being twisted are reduced, the fireproof performance of the cable is improved by reducing the air content in the gap, the cable integrity is guaranteed, the metal sheath 8 is welded outside the oxygen isolation layer 7, and the nonmetal sheath 9 is coated outside the metal sheath 8.
The insulating layer 2 is a calcined mica tape, which adopts a mica raw material with high temperature resistance level, and removes crystal water and impurities at high temperature, so that the temperature resistance level of the calcined mica tape reaches the standard of the synthetic mica tape, the flexibility and the stability are better than those of synthetic mica paper, the moisture-proof layer 3 is ceramic silicon rubber, the moisture-proof layer 3 is extruded and wrapped on the outer wall of the insulating layer 2, the ceramic silicon rubber insulating material is extruded and wrapped outside the insulating layer 2 to be used as the moisture-proof layer 3, the insulating material has the characteristics of excellent fire resistance, moisture resistance, flame retardance, low smoke, no toxicity and the like, the extrusion molding process is simple, the residue after combustion is a hard ceramic shell, the hard shell is not melted and not dropped in a fire environment, and can pass through the line experiment integrity of cooling for 15min at 950-1000 ℃ specified in GB/T19216.21-2003, and is suitable for any places needing fire prevention, the protective device plays a firm protection role in ensuring smooth power transmission under the condition of fire.
The halogen-free low-smoke flame-retardant wrapping tape 5 is fixed on the outer side of the wire core 10 in a wrapping mode.
The protective layer 6 is a ceramic silicon rubber belt and is wrapped outside the halogen-free low-smoke flame-retardant wrapping belt 5. The oxygen isolation layer 7 is made of ceramic silicon rubber and is coated on the outer wall of the protection layer 6 in an extrusion mode, the protection layer 6 is formed by wrapping ceramic silicon rubber belts, the oxygen isolation layer 7 is made of ceramic silicon rubber in an extrusion mode, a ceramic silicon rubber double-layer protection design is adopted, the heat insulation, heat preservation and moisture prevention effects of the ceramic silicon rubber during normal operation can be guaranteed, meanwhile, the ceramic silicon rubber can be vitrified at the temperature of 350-800 ℃ or above under the condition of flame and is sintered into a porous self-supporting ceramic body, the integrity of the structure can be kept in a certain time, the passive fire prevention effect can be well played, the time is won for fire safety, the vitrified body is hard and has certain flexural strength and compressive strength, and the bending strength of the ceramic silicon rubber is obviously increased along with the increase of the temperature. The fire fighting process is simulated to spray water to the sintered body ablated at high temperature, the sintered body of the ceramic silicon rubber is not cracked, the ceramic silicon rubber shows good thermal shock resistance, and meanwhile, the ceramic silicon rubber has the advantages of no halogen, low smoke, low toxicity, self-extinguishing, environmental protection and good electrical property.
The metal sheath 8 is a copper strip and is welded outside the oxygen isolation layer 7 through argon arc welding, the metal sheath 8 is an argon arc welding embossing copper sheath, the melting point of copper is 1083 ℃, the fireproof performance of the cable is guaranteed, the bending performance of the cable is improved through embossing, and meanwhile the overall impact resistance of the cable can be enhanced.
The non-metal sheath 9 is made of ceramic halogen-free low-smoke polyolefin flame-retardant refractory material and has good mechanical property; the smoke-free environment-friendly cigarette also has excellent safety and environmental protection, does not delay combustion and drip, has the smoke toxicity reaching ZA1 level, does not cause secondary damage to human bodies, and has the smoke density and the light transmittance of over 80 percent.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or the like described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides a take flexible mineral insulation fireproof cable of dampproof course, a serial communication port, including sinle silk (10), sinle silk (10) include copper core conductor (1) and cladding insulating layer (2) and dampproof course (3) outside copper core conductor (1) in proper order, copper core conductor (1) is many circular shape copper conductors by the cross-section and sticiss the transposition and constitute, several after the transposition sinle silk (10) outer wall is equipped with halogen-free low smoke flame retardant area (5), protective layer (6) in proper order and separates oxygen layer (7), it has high fire-retardant filling rope (4) to fill between sinle silk (10) and the halogen-free low smoke flame retardant area (5), it has metal sheath (8) to separate oxygen layer (7) outer welding, metal sheath (8) outer cladding has non-metal sheath (9).
2. The flexible mineral-insulated fireproof cable with the moisture-proof layer according to claim 1, wherein the insulating layer (2) is a calcined mica tape, the moisture-proof layer (3) is a ceramic silicon rubber, and the moisture-proof layer (3) is extruded on the outer wall of the insulating layer (2).
3. The flexible mineral-insulated fireproof cable with the moisture-proof layer according to claim 1, wherein the halogen-free low-smoke flame-retardant wrapping tape (5) is fixed outside the wire core (10) in a wrapping manner.
4. The flexible mineral-insulated fireproof cable with the moisture-proof layer according to claim 1, wherein the protective layer (6) is a ceramic silicon rubber tape and is wrapped outside the halogen-free low-smoke flame-retardant wrapping tape (5).
5. The flexible mineral-insulated fireproof cable with the moisture barrier layer according to claim 1, wherein the oxygen barrier layer (7) is ceramic silicon rubber and is coated on the outer wall of the protective layer (6) through extrusion.
6. The flexible mineral-insulated fireproof cable with the moisture barrier according to claim 1, wherein the metal sheath (8) is a copper strip and is welded outside the oxygen barrier (7) by argon arc welding.
7. The flexible mineral-insulated fireproof cable with the moisture-proof layer according to claim 1, wherein the non-metallic sheath (9) is made of ceramic halogen-free low-smoke polyolefin flame-retardant fireproof material.
CN202121408951.4U 2021-06-23 2021-06-23 Flexible mineral insulation fireproof cable with moisture-proof layer Active CN214753056U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121408951.4U CN214753056U (en) 2021-06-23 2021-06-23 Flexible mineral insulation fireproof cable with moisture-proof layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121408951.4U CN214753056U (en) 2021-06-23 2021-06-23 Flexible mineral insulation fireproof cable with moisture-proof layer

Publications (1)

Publication Number Publication Date
CN214753056U true CN214753056U (en) 2021-11-16

Family

ID=78630695

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121408951.4U Active CN214753056U (en) 2021-06-23 2021-06-23 Flexible mineral insulation fireproof cable with moisture-proof layer

Country Status (1)

Country Link
CN (1) CN214753056U (en)

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Address after: No.39 Jintai Road, East Industrial District, Xindu District, Chengdu, Sichuan 610000

Patentee after: Jinbei electric (Chengdu) Co.,Ltd.

Address before: No.39 Jintai Road, East Industrial District, Xindu District, Chengdu, Sichuan 610000

Patentee before: JINBEI TA PAI CABLES CO.,LTD.

CP01 Change in the name or title of a patent holder