CN210295943U - Cable insulation flame-retardant system - Google Patents
Cable insulation flame-retardant system Download PDFInfo
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- CN210295943U CN210295943U CN201921570709.XU CN201921570709U CN210295943U CN 210295943 U CN210295943 U CN 210295943U CN 201921570709 U CN201921570709 U CN 201921570709U CN 210295943 U CN210295943 U CN 210295943U
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Abstract
The utility model discloses a cable insulation fire-retardant system, including a plurality of copper cores, the outside of copper core all wraps up and is provided with the mineral insulation flame retardant coating, a plurality of copper cores including the mineral insulation flame retardant coating arrange metal composite shielding layer and fire-resistant around the band in, still fill non-moisture absorption filling material in the space in the metal composite shielding layer, fire-resistant outside around the band still is provided with fire-retardant high polymer sheath, constitute complete cable insulation fire-retardant system through mineral insulation flame retardant coating, metal composite shielding layer, fire-resistant around the band, fire-retardant high polymer sheath and non-moisture absorption filling material, guarantee the insulating fire behaviour of cable; the low-smoke halogen-free thermosetting insulating high polymer and the low-smoke halogen-free flame retardant polyolefin layer are used for ensuring the release of halogen-free acid gas of the cable under unexpected conditions and reducing the smoke quantity of the cable; the structural strength of a cable system is improved through the insulating waterproof isolating sleeve and the galvanized steel strip armor, the cable is stably supported, and the service life of the cable is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the cable and specifically relates to a cable insulation fire-retardant system.
Background
Currently, the need for rapid transfer of data and information has increased dramatically with reliance on computers, word processors, telefax, sensing and communication equipment. With various new devices and requirements, the demand for cables has increased dramatically. Cables of various types and performances are in endlessly produced, and different requirements are put on the cables in different applicable fields.
However, in summary, apart from the most basic electrical transmission requirements of the cable, the most important cable performance is the insulation flame retardant performance of the cable, and safety accidents and potential safety hazards caused by the insulation flame retardant performance of the cable are gradually emphasized by people, so a cable insulation flame retardant system is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cable insulation fire-retardant system to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an insulating fire-retardant system of cable, includes a plurality of copper cores, the outside of copper core all wraps up and is provided with the mineral insulation flame retardant coating, and the copper core of a plurality of including the mineral insulation flame retardant coating arranges the compound shielding layer of metal in and fire-resistant around the band, fire-resistant outside that lies in the compound shielding layer of metal around the band still fills non-moisture absorption filler material in the compound intraformational space of metal, and fire-resistant outside around the band still is provided with fire-retardant high polymer sheath.
In a further embodiment, the number of copper cores is seven.
In a further embodiment, the number of copper cores is four and their cross-section is four sectors of equal size.
In a further embodiment, the number of copper cores is three.
In a further embodiment, the mineral insulating refractory layer is a mica refractory layer.
In a further embodiment, the metal composite shielding layer is filled with a low-smoke halogen-free thermosetting insulating high polymer, and a low-smoke halogen-free flame-retardant polyolefin layer is arranged on the outer side of the fire-resistant wrapping tape.
In a further embodiment, a crosslinked polyethylene insulating layer is arranged on the outer side of the copper core, and two layers of semiconductive polyolefin are further arranged on the copper core and the crosslinked polyethylene insulating layer, and the semiconductive polyolefin is respectively positioned on the outer sides of the copper core and the crosslinked polyethylene insulating layer.
In a further embodiment, the fire-resistant wrapping tape is provided with an insulating waterproof isolation sleeve and a galvanized steel tape armor on the outer side
Compared with the prior art, the beneficial effects of the utility model are that: the complete cable insulation flame-retardant system is formed by the mineral insulation flame-retardant layer, the metal composite shielding layer, the fire-resistant wrapping tape, the flame-retardant high polymer sheath and the non-moisture-absorption filling material, so that the insulation flame-retardant performance of the cable in use is ensured; the low-smoke halogen-free thermosetting insulating high polymer and the low-smoke halogen-free flame retardant polyolefin layer are used, so that the flame retardant property of the cable is improved, the release of halogen-free acid gas of the cable under unexpected conditions is ensured, and the smoke quantity of the cable is reduced; when the flame retardant capability of the cable is improved through the insulating waterproof isolation sleeve and the galvanized steel strip armor, the structural strength of a cable system is improved, the cable is stably supported, and the service life of the cable is prolonged.
Drawings
Fig. 1 is a structural diagram of a cable insulation flame-retardant system with seven copper cores.
Fig. 2 is a structural diagram of a cable insulation flame-retardant system with four copper cores.
Fig. 3 is a schematic structural diagram of a cable insulation flame-retardant system with three copper cores.
In the figure, a fire-resistant wrapping tape 1, a metal composite shielding layer 2, a mineral insulating fire-resistant layer 3, a copper core 4, a glass fiber filler 5, a fire-resistant high polymer sheath 6, a low-smoke halogen-free fire-resistant polyolefin layer 7, a low-smoke halogen-free thermosetting insulating high polymer 8, a mica fire-resistant layer 9, semiconductive polyolefin 10, a crosslinked polyethylene insulating layer 11, a copper tape 12, a non-hygroscopic filling material 13, an insulating waterproof isolating sleeve 14 and a galvanized steel tape armor 15.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, in an embodiment of the present invention, a cable insulation flame retardant system includes a plurality of copper cores 4, the number of the copper cores 4 is preferably seven, the outer side of the copper cores 4 is wrapped with a mineral insulation flame retardant coating 3, the plurality of copper cores 4 including the mineral insulation flame retardant coating 3 are disposed in a metal composite shielding layer 2 and a fire-resistant wrapping tape 1, the fire-resistant wrapping tape 1 is disposed on the outer side of the metal composite shielding layer 2, a space in the metal composite shielding layer 2 is filled with a glass fiber filler 5, the glass fiber filler is an inorganic non-metal material with excellent performance, the insulation performance is good, the heat resistance is strong, the corrosion resistance is good, the mechanical strength is high, the insulating flame retardant system is filled with the glass fiber filler, the cable insulation flame retardant performance is improved, a fire-resistant high polymer sheath 6 is further disposed on the outer side of the wrapping tape 1, and the flame retardant coating 3, The metal composite shielding layer 2, the fire-resistant wrapping tape 1, the flame-retardant high polymer sheath 6 and the glass fiber filler 5 form a complete cable insulation flame-retardant system, so that the insulation flame-retardant performance of the cable in use is ensured.
Example 2
Referring to fig. 2, the difference from embodiment 1 is: the figure of copper core 4 is four and its cross-section is four fan-shaped big such as, the outside parcel of fan-shaped copper core 4 sets up mica flame retardant coating 9, and mica is a rock-making mineral, presents the slice crystal form of hexagon, and its characteristic is insulating, high temperature resistant, and make full use of mica flame retardant coating 9 guarantees cable system's performance, copper core 4 sets up in metal composite shielding layer 2 and fire-resistant winding band 1 equally, fill glass fiber filler 5 in metal composite shielding layer 2, still fill low smoke and zero halogen thermosetting insulating high polymer 8 in the metal composite shielding layer 2, fire-resistant outside of winding band 1 is equipped with low smoke and zero halogen fire retardant polyolefin layer 7, and this embodiment has used low smoke and zero halogen insulating high polymer 8 and low smoke and zero halogen fire retardant polyolefin layer 7 on the basis of guaranteeing cable insulating flame retardant performance, when promoting cable fire retardant characteristic, the cable is guaranteed to have no halogen acid gas to release under unexpected conditions, the smoke quantity of the cable is reduced, and the performance of the cable is improved.
Example 3
Referring to fig. 3, the difference from embodiment 1 is: the figure of copper core 4 is three, the outside of copper core 4 is equipped with crosslinked polyethylene insulating layer 11, still is equipped with two-layer semiconduction polyolefin 10 on copper core 4 and the crosslinked polyethylene insulating layer 11, and semiconduction polyolefin 10 is located the outside of copper core 4 and crosslinked polyethylene insulating layer 11 respectively, it has non-moisture absorption filler 13 to fill in the fire-resistant tape of wrapping 1, and adjacent copper core 4 and crosslinked polyethylene insulating layer 11 still are equipped with copper strips 12, and fire-resistant tape of wrapping 1's outside is equipped with insulating waterproof spacer sleeve 14 and galvanized steel strip armor 15, when promoting cable flame retardant ability through insulating waterproof spacer sleeve 14 and galvanized steel strip armor 15, has promoted cable system's structural strength, carries out stable support to the cable, improves the cable life-span.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a cable insulation fire-retardant system, includes a plurality of copper cores (4), its characterized in that, the outside of copper core (4) is all wrapped up and is provided with mineral insulation flame retardant coating (3), and a plurality of copper cores (4) including mineral insulation flame retardant coating (3) are arranged in metal composite shielding layer (2) and are fire-resistant around in band (1), fire-resistant outside that is located metal composite shielding layer (2) around band (1), still fill non-moisture absorption filler material (13) in the space in metal composite shielding layer (2), fire-resistant outside around band (1) still is provided with fire-retardant high polymer sheath (6).
2. A cable insulation fire retardant system according to claim 1, characterized in that the number of copper cores (4) is seven.
3. Cable insulation flame-retardant system according to claim 1, characterized in that the number of copper cores (4) is four and their cross-section is four sectors of equal size.
4. A cable insulation fire retardant system according to claim 1, characterized in that the number of copper cores (4) is three.
5. A cable insulation fire retardant system according to claim 1 characterised in that the mineral insulation fire resistant layer (3) is a mica fire resistant layer (9).
6. The cable insulation flame-retardant system according to claim 1, wherein the metal composite shielding layer (2) is further filled with a low-smoke halogen-free thermosetting insulating high polymer (8), and a low-smoke halogen-free flame-retardant polyolefin layer (7) is arranged on the outer side of the fire-resistant wrapping tape (1).
7. The cable insulation flame-retardant system according to claim 1, wherein a crosslinked polyethylene insulation layer (11) is arranged on the outer side of the copper core (4), two layers of semi-conductive polyolefin (10) are further arranged on the copper core (4) and the crosslinked polyethylene insulation layer (11), and the semi-conductive polyolefin (10) is respectively arranged on the outer sides of the copper core (4) and the crosslinked polyethylene insulation layer (11).
8. The cable insulation fire-retardant system of claim 1, characterized in that the fire-resistant wrapping tape (1) is provided with an insulating waterproof insulating sleeve (14) and a galvanized steel armor (15) on the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570709.XU CN210295943U (en) | 2019-09-20 | 2019-09-20 | Cable insulation flame-retardant system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570709.XU CN210295943U (en) | 2019-09-20 | 2019-09-20 | Cable insulation flame-retardant system |
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| CN210295943U true CN210295943U (en) | 2020-04-10 |
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| CN201921570709.XU Active CN210295943U (en) | 2019-09-20 | 2019-09-20 | Cable insulation flame-retardant system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420253A (en) * | 2020-09-30 | 2021-02-26 | 扬州市宜盈电热科技有限公司 | High-temperature-resistant insulated cable wire |
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2019
- 2019-09-20 CN CN201921570709.XU patent/CN210295943U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420253A (en) * | 2020-09-30 | 2021-02-26 | 扬州市宜盈电热科技有限公司 | High-temperature-resistant insulated cable wire |
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Effective date of registration: 20220406 Address after: 365400 No. 37, Gongye South Road, Chengnan Town, Ninghua County, Sanming City, Fujian Province Patentee after: Fujian Chaoyang wire and cable Co.,Ltd. Address before: 350208 Liyushan Industrial Zone, Heshang Town, Changle City, Fuzhou City, Fujian Province Patentee before: FUZHOU TONGERDA ELECTRIC WIRE & CABLE Co.,Ltd. |