CN211264999U - Aluminum alloy core inorganic mineral composite insulation flexible fireproof cable - Google Patents
Aluminum alloy core inorganic mineral composite insulation flexible fireproof cable Download PDFInfo
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- CN211264999U CN211264999U CN201922366061.0U CN201922366061U CN211264999U CN 211264999 U CN211264999 U CN 211264999U CN 201922366061 U CN201922366061 U CN 201922366061U CN 211264999 U CN211264999 U CN 211264999U
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Abstract
An aluminum alloy core inorganic mineral composite insulating flexible fireproof cable comprises an insulating wire core, wherein the insulating wire core consists of an aluminum alloy conductor, an inorganic mineral fireproof belt and a ceramic fireproof silicon rubber insulating layer; an inorganic mineral fire-resistant belt is wrapped on the aluminum alloy conductor, and a ceramic fireproof silicon rubber insulating layer is extruded on the inorganic mineral fire-resistant belt; a plurality of insulated wire cores are stranded into a cable core in a cabling way; the gap and the outside of the multiple insulation wire cores are extruded with an inorganic mineral fireproof mud layer I, the inorganic mineral fireproof mud layer I is wrapped with two layers of halogen-free environment-friendly high-flame-retardant belts, the high-flame-retardant belt is wrapped with a corrugated aluminum metal sleeve, the corrugated aluminum metal sleeve is extruded with an inorganic mineral fireproof mud layer II, the inorganic mineral fireproof mud layer is wrapped with one layer of halogen-free environment-friendly high-flame-retardant belt, and the halogen-free environment-friendly high-flame-retardant belt is wrapped with a sheath layer. The cable has the advantages of good insulating property, excellent fire-resistant combustion performance, good flexibility, light weight, convenient installation and construction, time saving, labor saving and lower cost than a copper cable.
Description
Technical Field
The utility model relates to a cable field especially relates to an aluminum alloy core inorganic mineral composite insulation flexible fireproof cable.
Background
In recent years, with the rapid development of urban construction, public infrastructure and the like, higher requirements are put on building electrical technology, the fire resistance of electrical lines of high-rise buildings and important buildings are more and more emphasized, and particularly, mineral insulation fireproof cables are generally adopted in special class equipment trunks and class one fire-fighting equipment trunks such as stadiums, theaters, hospitals, underground parking lots and the like.
At present, the domestic common fireproof cable generally adopts a structure of a copper conductor and a copper pipe sheath, and the fireproof cable of the structure has limited production length, so that a plurality of joints are produced during installation, the construction is complicated, the joint failure rate is high, the weight of the cable is heavy, and the vertical laying of large length is not facilitated; and the cable adopting the copper conductor and the copper pipe sheath has high material cost and is not beneficial to wide application.
SUMMERY OF THE UTILITY MODEL
In view of above situation, in order to solve the problem that the above-mentioned technique exists, the utility model provides an aluminum alloy core inorganic mineral composite insulation flexible fireproof cable.
According to the utility model discloses an aluminum alloy core inorganic mineral composite insulation flexible fireproof cable, which comprises an insulation core, wherein the insulation core is composed of an aluminum alloy conductor, an inorganic mineral fire-resistant belt and a ceramic fireproof silicon rubber insulation layer; an inorganic mineral fire-resistant belt is wrapped on the aluminum alloy conductor, and a ceramic fireproof silicon rubber insulating layer is extruded on the inorganic mineral fire-resistant belt; a plurality of insulated wire cores are stranded into a cable core in a cabling way; the gap and the outside of the multiple insulation wire cores are extruded with an inorganic mineral fireproof mud layer I, the inorganic mineral fireproof mud layer I is wrapped with two layers of halogen-free environment-friendly high-flame-retardant belts, the high-flame-retardant belt is wrapped with a corrugated aluminum metal sleeve, the corrugated aluminum metal sleeve is extruded with an inorganic mineral fireproof mud layer II, the inorganic mineral fireproof mud layer is wrapped with one layer of halogen-free environment-friendly high-flame-retardant belt, and the halogen-free environment-friendly high-flame-retardant belt is wrapped with a sheath layer.
Preferably, the insulated wire core is a single core or a multi-core.
Preferably, the aluminum alloy core conductor comprises the following components in percentage by weight: 0.2 to 0.8 percent of iron, 0.0001 to 0.1 percent of zinc, 0.02 to 0.15 percent of silicon and the balance of aluminum.
Preferably, the inorganic mineral refractory belt coated outside the aluminum alloy conductor has two or more layers.
Preferably, the thickness of the ceramic fireproof silicon rubber insulation layer is 0.5 mm-4.0 mm. When the insulated wire core is larger than the core, the ceramic fireproof silicon rubber insulating layer of each extrusion is coated with a colored tape with different colors to be used as a mark line of the cable core so as to distinguish different phase lines of the cable.
Preferably, the thickness of the first inorganic mineral fireproof mud layer and the second inorganic mineral fireproof mud layer is 1.0 mm-5.0 mm. The inorganic mineral fireproof mud layer I and the inorganic mineral fireproof mud layer II are prepared by magnesium hydroxide, aluminum hydroxide, sodium silicate and calcium sulfate whisker materials according to a proportion.
Preferably, the halogen-free environment-friendly high-flame-retardant belt and the halogen-free environment-friendly high-flame-retardant belt are alkali-free glass fiber woven belts, and the surfaces of the alkali-free glass fiber woven belts are coated with inorganic fireproof coating layers.
Preferably, the thickness of the halogen-free environment-friendly high-flame-retardant belt and the single-layer flame-retardant belt of the halogen-free environment-friendly high-flame-retardant belt is 0.1-0.3 mm.
Preferably, the rolled aluminum metal sleeve is a seamless aluminum pipe formed by argon arc welding of an aluminum strip with the thickness of 0.4-1.5 mm.
Preferably, the embossed aluminum metal sleeve is provided with radial embossing so as to coat the first inorganic mineral fireproof mud layer.
Preferably, the sheath layer is an environment-friendly low-smoke halogen-free flame-retardant polyolefin material extrusion layer.
After the technology provided by the utility model, according to the utility model discloses aluminum alloy core inorganic mineral composite insulation flexible fireproof cable has following beneficial effect:
1. compared with the prior common magnesium oxide insulated fireproof cable, the cable has the problems that the cable cannot be bent and quality defects are easy to generate when the cable is bent. The utility model discloses the cable passes through inorganic mineral fire-resistant area and ceramic fire prevention silicon rubber insulating layer composite insulation to with inorganic mineral fire prevention mud layer one, inorganic mineral fire prevention mud layer two and embossing aluminium metal sleeve pipe carry out multi-level fire prevention, make the cable possess with take the fire-resistant combustion performance that the fireproof cable of metal separation sleeve is the same, make the cable possess excellent pliability simultaneously, cable bending radius can reach 12 times cable diameter, far be superior to the fireproof cable of other types, be convenient for install and lay.
2. The utility model discloses an inorganic mineral fire-resistant area and ceramic fire prevention silicon rubber insulating layer composite insulation possess excellent electrical property: the dielectric constant is more than or equal to 25MV/m, and the volume resistivity is more than or equal to 5 multiplied by 1013 omega.m; after the ceramic fireproof silicon rubber insulating layer is ablated, the ceramic fireproof silicon rubber insulating layer is changed into a hard ceramic shell, the bending strength can reach 6-8 MPa, the dielectric constant is larger than or equal to 27MV/m, the volume resistivity is larger than or equal to 5 multiplied by 1015 omega-m, and the occurrence of cable ground faults caused by insulation breakdown of the cable in the installation or use process can be effectively prevented.
3. The fireproof mud layer and the ceramic fireproof silicon rubber insulating layer of the utility model can be rapidly sintered into a hard ceramic hard shell under the flame of 650-3000 ℃, and the hard ceramic hard shell does not crack, melt or drip, and the hard shell can effectively isolate the infringement of high-temperature flame to the interior of the circuit, thereby ensuring the smoothness of the circuit under the fire disaster; the flame temperature of the cable is not lower than 750 ℃ under the rated working voltage, and the fuse is not broken within 180min of the fire supply time.
4. Excellent mechanical properties: the embossing aluminum metal sleeve can improve the mechanical property of the cable and enhance the impact resistance, and meanwhile, the metal sleeve forms a sealed environment, so that the cable has the effects of insulating temperature, heat, fire and water, and can also prevent objects in a fire scene environment from impacting and damaging an insulating layer of the cable.
5. Oxidation resistance and corrosion resistance: the oxidation resistance and corrosion resistance of the aluminum alloy cable are superior to those of the copper cable. The aluminum cable joint has poor creep performance, and the alloy cable and the copper cable have excellent creep resistance.
6. The economic efficiency is as follows: reasonable in design's structure chooses for use suitable fire-proof material, has both satisfied the needs of cable fire prevention, considers material selection, structure size, electrical property again, and the cost is less than the copper cable, light in weight, high-efficient installation, save time, saving manpower, reaches reduce cost's purpose simultaneously, possesses higher economic price/performance ratio, under the function that reaches the circuit fire prevention, can save great economic cost for the user.
Drawings
Fig. 1 is a sectional structure view (4-core) of an aluminum alloy core inorganic mineral composite insulating flexible fireproof cable according to the present application.
Wherein: 1. an insulated wire core; 11 an aluminum alloy conductor; 12. an inorganic mineral refractory belt; 13. ceramizing a fireproof silicon rubber insulating layer; 2. inorganic mineral fireproof mud layer I; 3. a halogen-free environment-friendly high flame-retardant tape; 4. rolling an aluminum metal casing; 5. inorganic mineral fireproof mud layer II; 6. a halogen-free environment-friendly high flame-retardant tape; 7. a sheath layer.
Detailed Description
The present invention will be described in further detail with reference to embodiments shown in the drawings. The described embodiments include various specific details to aid understanding, but they are to be construed as merely illustrative, and not restrictive of all embodiments of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. Meanwhile, in order to make the description more clear and concise, a detailed description of functions and configurations well known in the art will be omitted.
As shown in fig. 1, the aluminum alloy core inorganic mineral composite insulating flexible fireproof cable comprises an insulating core 1, wherein the insulating core 1 consists of an aluminum alloy conductor 11, an inorganic mineral fireproof belt 12 and a ceramic fireproof silicone rubber insulating layer 13; an inorganic mineral fire-resistant belt 12 is wrapped on the aluminum alloy conductor 11, and a ceramic fireproof silicon rubber insulating layer 13 is extruded on the inorganic mineral fire-resistant belt 12; a plurality of insulating wire cores 1 are stranded into a cable core in a cabling way; the gap and the outside of the multiple insulation wire cores 1 are extruded with an inorganic mineral fireproof mud layer I2, the inorganic mineral fireproof mud layer I2 is wrapped with two layers of halogen-free environment-friendly high-flame-retardant belts 3, the high-flame-retardant belts 3 are wrapped with embossed aluminum metal sleeves 4, the embossed aluminum metal sleeves 4 are extruded with an inorganic mineral fireproof mud layer II 5, the inorganic mineral fireproof mud layer II 5 is wrapped with one layer of halogen-free environment-friendly high-flame-retardant belt 6, and the halogen-free environment-friendly high-flame-retardant belts 6 are wrapped with sheath layers 7.
The insulated wire core 1 is a single core or a multi-core.
The aluminum alloy core conductor 11 comprises the following components in percentage by weight: 0.2 to 0.8 percent of iron, 0.0001 to 0.1 percent of zinc, 0.02 to 0.15 percent of silicon and the balance of aluminum.
The inorganic mineral refractory belt 12 coated outside the aluminum alloy conductor 11 has two or more layers.
The thickness of the ceramic fireproof silicon rubber insulating layer 13 is 0.5 mm-4.0 mm. When the number of the insulated wire cores 1 is larger than 1, the ceramic fireproof silicon rubber insulating layers 13 which are extruded are coated with color bands of different colors to serve as marking lines of the cable core so as to distinguish different phase lines of the cable.
The thickness of the first inorganic mineral fireproof mud layer 2 and the second inorganic mineral fireproof mud layer 5 is 1.0 mm-5.0 mm. The inorganic mineral fireproof mud layer I2 and the inorganic mineral fireproof mud layer II 5 are prepared by magnesium hydroxide, aluminum hydroxide, sodium silicate and calcium sulfate whisker materials according to a proportion.
The halogen-free environment-friendly high-flame-retardant belt 3 and the halogen-free environment-friendly high-flame-retardant belt 6 are alkali-free glass fiber woven belts, and the surfaces of the alkali-free glass fiber woven belts are coated with inorganic fireproof coating layers.
The thickness of the halogen-free environment-friendly high flame-retardant belt 3 and the thickness of the halogen-free environment-friendly high flame-retardant belt 6 are 0.1-0.3 mm.
The corrugated aluminum metal sleeve 4 is a seamless aluminum pipe formed by welding an aluminum strip with the thickness of 0.4-1.5 mm through argon arc welding.
The embossed aluminum metal sleeve 4 is provided with radial embossing so as to be coated on the inorganic mineral fireproof mud layer I2.
The sheath layer 7 is an environment-friendly low-smoke halogen-free flame-retardant polyolefin material extrusion coating layer.
According to the application, the flexible fireproof cable with the aluminum alloy core and the inorganic mineral composite insulation has the advantages of simple structure, good insulation performance, excellent fire-resistant combustion performance, good flexibility, light weight, convenience in installation and construction, time saving, manpower saving, low cost compared with a copper cable, high economic cost performance, capability of saving large economic cost for users under the function of circuit fire prevention, high practicability and suitability for popularization and use.
According to the application, the aluminum alloy core inorganic mineral composite insulation flexible fireproof cable has the beneficial effects that:
1. compared with the prior common magnesium oxide insulated fireproof cable, the cable has the problems that the cable cannot be bent and quality defects are easy to generate when the cable is bent. The utility model discloses the cable passes through inorganic mineral fire-resistant area and ceramic fire prevention silicon rubber insulating layer composite insulation to with inorganic mineral fire prevention mud layer one, inorganic mineral fire prevention mud layer two and embossing aluminium metal sleeve pipe carry out multi-level fire prevention, make the cable possess with take the fire-resistant combustion performance that the fireproof cable of metal separation sleeve is the same, make the cable possess excellent pliability simultaneously, cable bending radius can reach 12 times cable diameter, far be superior to the fireproof cable of other types, be convenient for install and lay.
2. The utility model discloses an inorganic mineral fire-resistant area and ceramic fire prevention silicon rubber insulating layer composite insulation possess excellent electrical property: the dielectric constant is more than or equal to 25MV/m, and the volume resistivity is more than or equal to 5 multiplied by 1013 omega.m; after the ceramic fireproof silicon rubber insulating layer is ablated, the ceramic fireproof silicon rubber insulating layer is changed into a hard ceramic shell, the bending strength can reach 6-8 MPa, the dielectric constant is larger than or equal to 27MV/m, the volume resistivity is larger than or equal to 5 multiplied by 1015 omega-m, and the occurrence of cable ground faults caused by insulation breakdown of the cable in the installation or use process can be effectively prevented.
3. The fireproof mud layer and the ceramic fireproof silicon rubber insulating layer of the utility model can be rapidly sintered into a hard ceramic hard shell under the flame of 650-3000 ℃, and the hard ceramic hard shell does not crack, melt or drip, and the hard shell can effectively isolate the infringement of high-temperature flame to the interior of the circuit, thereby ensuring the smoothness of the circuit under the fire disaster; the flame temperature of the cable is not lower than 750 ℃ under the rated working voltage, and the fuse is not broken within 180min of the fire supply time.
4. Excellent mechanical properties: the embossing aluminum metal sleeve can improve the mechanical property of the cable and enhance the impact resistance, and meanwhile, the metal sleeve forms a sealed environment, so that the cable has the effects of insulating temperature, heat, fire and water, and can also prevent objects in a fire scene environment from impacting and damaging an insulating layer of the cable.
5. Oxidation resistance and corrosion resistance: the oxidation resistance and corrosion resistance of the aluminum alloy cable are superior to those of the copper cable. The aluminum cable joint has poor creep performance, and the alloy cable and the copper cable have excellent creep resistance.
6. The economic efficiency is as follows: reasonable in design's structure chooses for use suitable fire-proof material, has both satisfied the needs of cable fire prevention, considers material selection, structure size, electrical property again, and the cost is less than the copper cable, light in weight, high-efficient installation, save time, saving manpower, reaches reduce cost's purpose simultaneously, possesses higher economic price/performance ratio, under the function that reaches the circuit fire prevention, can save great economic cost for the user.
The terms "upper", "lower" or "above", "below" or the like are used herein in a relative relationship with respect to a normal use in a placed state, i.e., a positional relationship as generally shown in the drawings of the present application. When the placement state changes, for example, when the placement state is turned over, the corresponding positional relationship should be changed accordingly to understand or implement the technical solution of the present application.
Claims (10)
1. The aluminum alloy core inorganic mineral composite insulating flexible fireproof cable is characterized by comprising an insulating wire core (1), wherein the insulating wire core (1) consists of an aluminum alloy conductor (11), an inorganic mineral fireproof belt (12) and a ceramic fireproof silicon rubber insulating layer (13); an inorganic mineral fire-resistant belt (12) is wrapped on the aluminum alloy conductor (11), and a ceramic fireproof silicon rubber insulating layer (13) is extruded on the inorganic mineral fire-resistant belt (12); a plurality of insulated wire cores (1) are stranded into a cable core in a cabling way; the gap and the outside of the multiple insulation wire cores (1) are extruded with an inorganic mineral fireproof mud layer I (2), the inorganic mineral fireproof mud layer I (2) is coated with two layers of halogen-free environment-friendly high-flame-retardant belts (3), the high-flame-retardant belts (3) are coated with embossing aluminum metal sleeves (4), the embossing aluminum metal sleeves (4) are extruded with an inorganic mineral fireproof mud layer II (5), the inorganic mineral fireproof mud layer II (5) is coated with a layer of halogen-free environment-friendly high-flame-retardant belt (6), and the halogen-free environment-friendly high-flame-retardant belts (6) are extruded with a sheath layer (7).
2. The flexible fireproof cable with aluminum alloy core and inorganic mineral composite insulation of claim 1, wherein the insulated wire core (1) is single-core or multi-core.
3. The flexible fireproof cable with the aluminum alloy core and the inorganic mineral composite insulation of claim 1, wherein the inorganic mineral fire-resistant belt (12) coated outside the aluminum alloy conductor (11) has two or more layers.
4. The flexible fireproof cable with the aluminum alloy core and the inorganic mineral composite insulation layer as claimed in claim 1, wherein the thickness of the ceramic fireproof silicon rubber insulation layer (13) is 0.5mm to 4.0 mm.
5. The flexible fireproof cable with the aluminum alloy core and the inorganic mineral composite insulation layer as claimed in claim 1, wherein the thickness of the first inorganic mineral fireproof mud layer (2) and the second inorganic mineral fireproof mud layer (5) is 1.0 mm-5.0 mm.
6. The flexible fireproof cable with aluminum alloy core and inorganic mineral composite insulation of claim 1, wherein the halogen-free environment-friendly high flame retardant tape (3) and the halogen-free environment-friendly high flame retardant tape (6) are alkali-free glass fiber woven tapes, and the surface of the halogen-free environment-friendly high flame retardant tape is coated with an inorganic fireproof coating layer.
7. The flexible fireproof cable with the aluminum alloy core and the inorganic mineral composite insulation layer as claimed in claim 1, wherein the thickness of the single-layer flame retardant tapes of the halogen-free environment-friendly high flame retardant tape (3) and the halogen-free environment-friendly high flame retardant tape (6) is 0.1-0.3 mm.
8. The flexible fireproof cable with the aluminum alloy core and the inorganic mineral composite insulating layer as claimed in claim 1, wherein the embossed aluminum metal sleeve (4) is a seamless aluminum tube formed by argon arc welding of an aluminum strip with a thickness of 0.4-1.5 mm.
9. An aluminium alloy core inorganic mineral composite insulating flexible fireproof cable according to claim 1, wherein the embossed aluminium metal sleeve (4) is provided with radial embossing.
10. The aluminum alloy core inorganic mineral composite insulating flexible fireproof cable according to claim 1, wherein the sheath layer (7) is an environment-friendly low-smoke halogen-free flame-retardant polyolefin material extrusion coating layer.
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| CN201922366061.0U CN211264999U (en) | 2019-12-25 | 2019-12-25 | Aluminum alloy core inorganic mineral composite insulation flexible fireproof cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035431A (en) * | 2021-03-02 | 2021-06-25 | 郑缆科技股份有限公司 | High-stability environment-friendly fireproof cable |
| CN114446533A (en) * | 2022-03-21 | 2022-05-06 | 河南乐山电缆有限公司 | Rat-proof and ant-proof mineral insulated fireproof cable and preparation method thereof |
| CN114596998A (en) * | 2022-03-14 | 2022-06-07 | 金龙电缆科技有限公司 | Preparation method of high-flame-retardant fireproof cable |
-
2019
- 2019-12-25 CN CN201922366061.0U patent/CN211264999U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035431A (en) * | 2021-03-02 | 2021-06-25 | 郑缆科技股份有限公司 | High-stability environment-friendly fireproof cable |
| CN114596998A (en) * | 2022-03-14 | 2022-06-07 | 金龙电缆科技有限公司 | Preparation method of high-flame-retardant fireproof cable |
| CN114596998B (en) * | 2022-03-14 | 2023-12-29 | 金龙电缆科技有限公司 | Preparation method of high-flame-retardance fireproof cable |
| CN114446533A (en) * | 2022-03-21 | 2022-05-06 | 河南乐山电缆有限公司 | Rat-proof and ant-proof mineral insulated fireproof cable and preparation method thereof |
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