CN219497390U

CN219497390U - High-temperature-resistant 3-core fireproof aluminum alloy cable

Info

Publication number: CN219497390U
Application number: CN202320241599.2U
Authority: CN
Inventors: 蔡长威; 刘书鑫; 李清华; 吴英俊; 王礼国
Original assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-08-08
Anticipated expiration: 2033-02-17

Abstract

The utility model discloses a high-temperature-resistant 3-core fireproof aluminum alloy cable, which comprises three power supply wire cores and a polyimide fiber filling core material which are twisted together to form a cable core, wherein the outside of the cable core is sequentially coated with a high-temperature glass fiber cloth outer wrapping layer, a modified silicone rubber ceramic mica fireproof composite outer wrapping layer, a high-temperature glass fiber wire wrapping layer and a silane grafted crosslinked high-density polyethylene outer sheath, the power supply wire cores comprise an aluminum alloy conductor, a modified silicone rubber ceramic mica fireproof composite inner wrapping layer, a PTFE insulating layer and a high-temperature glass fiber cloth inner wrapping layer, and the outer diameter of the silane grafted crosslinked high-density polyethylene outer sheath is 10mm to 32mm. The fireproof cable is suitable for severe environments with high temperature and fireproof performance, has excellent high temperature resistance and fire resistance, and enhances the safety and reliability of the cable.

Description

High-temperature-resistant 3-core fireproof aluminum alloy cable

Technical Field

The application relates to the technical field of cables, in particular to a high-temperature-resistant 3-core fireproof aluminum alloy cable.

Background

The high-temperature-resistant fireproof cable is suitable for model detection and power transmission in high-temperature, fireproof and anticorrosive severe environments such as power generation, metallurgy and the like. The system is especially suitable for controlling and transmitting power of the system protection loop of the fire protection and security system. The high temperature resistant fireproof cable has the characteristics of being capable of being used for 90 minutes at 1000 ℃ and maintaining the power supply for fire protection and lifesaving equipment and security systems under the condition of fire so as to reduce casualties and rescue difficulty. The high-temperature-resistant fireproof cable needs to have safer and more reliable electrical characteristics and fireproof performance than the common fireproof cable, the working temperature is 260-400 ℃ after long-term use, and the common fireproof cable cannot be directly replaced.

Disclosure of Invention

The application aims at the defects of the prior art, and the technical problem to be solved is to provide the high-temperature-resistant 3-core fireproof aluminum alloy cable which is suitable for the severe environments of high temperature and fire prevention, has excellent high-temperature resistance and fire resistance, and enhances the safety and reliability of the cable.

The technical problems are solved by the following technical scheme.

The utility model provides a high temperature resistant 3 core fire prevention aluminum alloy cable, includes three power core and polyimide fiber filling core strand jointly and constitutes the cable core, the outside cladding of cable core has high temperature glass fiber cloth outer around the covering, modified silicone rubber pottery mica fire-resistant composite tape outer around the covering, high temperature glass fiber wire around the covering and silane grafting crosslinked high density polyethylene oversheath in proper order, the power core includes aluminum alloy conductor and cladding in proper order the outside modified silicone rubber pottery mica fire-resistant composite tape inner around the covering, PTFE insulating layer and high temperature glass fiber cloth inner around the covering of aluminum alloy conductor, silane grafting crosslinked high density polyethylene oversheath external diameter is 10mm to 32mm.

Preferably, the aluminum alloy conductor is formed by twisting and compacting a plurality of aluminum alloy wires with the diameters of 0.25mm to 0.4mm to form a circular conductor structure.

Preferably, the aluminum alloy wires are 32, 49, 56, 84, 126, 196 or 276 wires.

Preferably, the high-temperature glass fiber cloth inner wrapping layer is of a high-temperature glass fiber cloth unidirectional spiral lapping wrapping structure, and the wrapping direction is the same as the cable core twisting direction.

Preferably, the high-temperature glass fiber wire wrapping layer is formed by spirally wrapping a plurality of high-temperature glass fiber wires in parallel.

Preferably, the inner wrapping layer and the outer wrapping layer of the modified silicone rubber ceramic mica fireproof composite belt are both of a multilayer lapping wrapping structure of the modified silicone rubber ceramic mica fireproof composite belt.

Preferably, the high-temperature glass fiber cloth outer wrapping layer is a high-temperature glass fiber cloth lapping and wrapping structure, and the lapping rate is 15-30%.

Preferably, the thickness of the high-temperature glass fiber cloth outer wrapping layer is 0.2mm to 0.5mm.

Preferably, the thickness of the PTFE insulation layer is not less than 0.5mm.

Preferably, the cable core has a lay length 10 to 15 times the outer diameter of the power supply core.

The beneficial effects of this application:

1. the power wire core adopts the modified silicone rubber ceramic mica fireproof composite tape inner wrapping layer, the PTFE insulating layer and the high-temperature glass fiber cloth inner wrapping layer, the modified silicone rubber ceramic mica fireproof composite tape inner wrapping layer has excellent fireproof heat insulation characteristics, heat conduction to the PTFE insulating layer is effectively slowed down, high-temperature resistance and fireproof flame retardance are improved through the high-temperature glass fiber cloth inner wrapping layer, the time for heat conduction to the inside of the wire core is prolonged, the internal temperature is reduced, and the safety and reliability of the cable are improved.

2. The polyimide fiber filling core material has excellent heat resistance and flame retardance, high heat stability and excellent high-temperature resistant heat insulation effect, and meanwhile, the high-temperature resistant and fire-resistant performances are enhanced through the high-temperature glass fiber cloth outer wrapping layer and the modified silicon rubber ceramic mica fireproof composite outer wrapping layer, so that the time for heat conduction to the inside of a cable core is effectively prolonged, the temperature in the cable core is reduced, the safety and reliability of the cable are enhanced, the characteristic requirement of the high-temperature resistant and fire-resistant cable is met, the cable can be used for 90 minutes at 1000 ℃, and the cable can supply electric energy to fire-fighting, life-saving equipment and security systems under the sudden fire disaster condition, thereby being beneficial to furthest reducing casualties and rescue difficulty.

3. Through the wrapping and fixing effect of the high-temperature glass fiber wrapping layer, the modified silicone rubber ceramic mica fireproof composite tape outer wrapping layer can be effectively prevented from falling off, the stability of the fireproof performance of the cable is ensured, the safety and reliability are improved, and the cable is durable to use.

Drawings

Fig. 1 is a schematic cross-sectional structure of an embodiment of the present application.

Reference numerals illustrate:

the high-temperature glass fiber reinforced plastic composite cable comprises a 1-power cable core, a 2-polyimide fiber filling core material, a 3-high-temperature glass fiber cloth outer wrapping layer, a 4-modified silicone rubber ceramic mica fireproof composite belt outer wrapping layer, a 5-high-temperature glass fiber wrapping layer, a 6-silane grafted crosslinked high-density polyethylene outer sheath, a 7-aluminum alloy conductor, an 8-modified silicone rubber ceramic mica fireproof composite belt inner wrapping layer, a 9-PTFE insulating layer and a 10-high-temperature glass fiber cloth inner wrapping layer.

Detailed Description

The terminology used in the description of the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application, as will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, the high-temperature-resistant 3-core fireproof aluminum alloy cable disclosed by the embodiment of the application comprises three power supply wire cores 1 and a polyimide fiber filling core material 2 which are twisted together to form a cable core, wherein the twisting distance of the cable core is 10 to 15 times of the outer diameter of the power supply wire cores 1. The power wire core 1 comprises an aluminum alloy conductor 7, and a modified silicon rubber ceramic mica fireproof composite belt inner wrapping layer 8, a PTFE insulating layer 9 and a high-temperature glass fiber cloth inner wrapping layer 10 which are sequentially wrapped outside the aluminum alloy conductor 7, specifically speaking, the aluminum alloy conductor 7 is formed by stranding and compacting a plurality of aluminum alloy wires with diameters of 0.25mm to 0.4mm to form a circular conductor structure, for example, 32, 49, 56, 84, 126, 196 or 276 aluminum alloy wires. The high-temperature glass fiber cloth inner wrapping layer 10 is of a high-temperature glass fiber cloth unidirectional spiral lapping wrapping structure, and the wrapping direction is the same as the cable core twisting direction. The thickness of the PTFE insulating layer 9 is not less than 0.5mm.

The cable core is sequentially coated with a high-temperature glass fiber cloth outer wrapping layer 3, a modified silicone rubber ceramic mica fireproof composite belt outer wrapping layer 4, a high-temperature glass fiber wire wrapping layer 5 and a silane grafted crosslinked high-density polyethylene outer sheath 6, wherein the outer diameter of the silane grafted crosslinked high-density polyethylene outer sheath 6 is 10mm to 32mm. In one embodiment, the high temperature glass fiber cloth outer wrapping layer 3 is a high temperature glass fiber cloth lap wrapping structure and the lap rate is 15 to 30 percent. The thickness of the high-temperature glass fiber cloth outer wrapping layer 3 is 0.2mm to 0.5mm. The modified silicone rubber ceramic mica fireproof composite belt inner wrapping layer 8 and the modified silicone rubber ceramic mica fireproof composite belt outer wrapping layer 4 are both of a modified silicone rubber ceramic mica fireproof composite belt multi-layer lapping wrapping structure. In one embodiment, the high-temperature glass fiber wire wrapping layer 5 is formed by spirally wrapping a plurality of high-temperature glass fiber wires in parallel.

Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. High temperature resistant 3 core fire prevention aluminum alloy cable, characterized by: the cable comprises three power supply cores (1) and polyimide fiber filling core materials (2) which are twisted together to form a cable core, wherein the cable core is sequentially coated with a high-temperature glass fiber cloth outer wrapping layer (3), a modified silicone rubber ceramic mica fireproof composite belt outer wrapping layer (4), a high-temperature glass fiber wire wrapping layer (5) and a silane grafted crosslinked high-density polyethylene outer sheath (6), the power supply cores (1) comprise aluminum alloy conductors (7) and a modified silicone rubber ceramic mica fireproof composite belt inner wrapping layer (8), a PTFE insulating layer (9) and a high-temperature glass fiber cloth inner wrapping layer (10) which are sequentially coated on the outer sides of the aluminum alloy conductors (7), and the outer diameter of the silane grafted crosslinked high-density polyethylene outer sheath (6) is 10mm to 32mm.

2. The high temperature resistant 3-core fire resistant aluminum alloy cable of claim 1, wherein: the aluminum alloy conductor (7) is formed by twisting and compacting a plurality of aluminum alloy wires with the diameters of 0.25mm to 0.4mm to form a circular conductor structure.

3. The high temperature resistant 3-core fire resistant aluminum alloy cable of claim 2, wherein: the number of the aluminum alloy wires is 32, 49, 56, 84, 126, 196 or 276.

4. The high temperature resistant 3-core fire resistant aluminum alloy cable of claim 1, wherein: the high-temperature glass fiber cloth inner wrapping layer (10) is of a high-temperature glass fiber cloth unidirectional spiral lapping wrapping structure, and the wrapping direction is the same as the cable core twisting direction.

5. The high temperature resistant 3-core fire resistant aluminum alloy cable of claim 1, wherein: the high-temperature glass fiber wire wrapping layer (5) is formed by spirally wrapping a plurality of high-temperature glass fiber wires in parallel.

6. The high temperature resistant 3-core fire resistant aluminum alloy cable of claim 1, wherein: the modified silicone rubber ceramic mica fireproof composite belt inner wrapping layer (8) and the modified silicone rubber ceramic mica fireproof composite belt outer wrapping layer (4) are both of a modified silicone rubber ceramic mica fireproof composite belt multi-layer lapping wrapping structure.

7. The high temperature resistant 3-core fire resistant aluminum alloy cable of claim 1, wherein: the high-temperature glass fiber cloth outer wrapping layer (3) is a high-temperature glass fiber cloth lapping and wrapping structure, and the lapping rate is 15-30%.

8. The high temperature resistant 3-core fire resistant aluminum alloy cable of claim 1, wherein: the thickness of the high-temperature glass fiber cloth outer wrapping layer (3) is 0.2mm to 0.5mm.

9. The high temperature resistant 3-core fire resistant aluminum alloy cable of claim 1, wherein: the thickness of the PTFE insulating layer (9) is not less than 0.5mm.

10. The high temperature resistant 3-core fire resistant aluminum alloy cable of claim 1, wherein: the lay length of the cable core is 10 to 15 times of the outer diameter of the power supply wire core (1).