CN211828232U

CN211828232U - Ceramic crusting fire-proof cable

Info

Publication number: CN211828232U
Application number: CN201922425101.4U
Authority: CN
Inventors: 李兴霞; 王伟; 费尤战; 房忠军
Original assignee: JIANGSU JIANGYANG CABLE CO Ltd
Current assignee: JIANGSU JIANGYANG CABLE CO Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-30
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a fire-insulated fire resisting cable of pottery crust type. The utility model uses the class 2 conductor which meets the requirements of GB/T3956-; the insulation is a three-layer co-extrusion process, the micropore and impurity content is low, and the insulation performance is high; the fire barrier layer can rapidly generate a complete ceramic-shaped hard shell at a high temperature of more than 600 ℃ or under the condition of flame, the hard shell is not melted and dropped, and the fire barrier layer can resist water spraying and mechanical vibration, has excellent electrical isolation performance and also has excellent oxygen and heat insulation effects.

Description

Ceramic crusting fire-proof cable

Technical Field

The utility model relates to a fire-resistant cable is separated to pottery crust type belongs to cable technical field.

Background

1. In the current national standard, the voltage grade of the fire-resistant cable is regulated to be 0.6/1kV or below; the requirement of the medium-voltage cable on insulation is higher than that of the low-voltage power cable, and the fire-resistant requirement of the medium-voltage cable cannot be met by depending on the electrical insulation performance of mica.

2. The safety of medium-voltage power transmission and distribution places cannot be guaranteed due to the absence of medium-voltage fire-resistant cables;

3. in order to standardize the market and promote the healthy development and quality improvement of medium-voltage fire-resistant cable products, the national wire and cable quality supervision and inspection center is compelled to compile and issue a related technical specification rated voltage 6kV (U) in 2012_m=7.2 kV) to 35kV (U)_m=40.5 kV) extruded insulated fire-resistant power cable.

In view of the above, ceramic shell type fire-proof and fire-resistant cables have been designed.

SUMMERY OF THE UTILITY MODEL

To the above defect, the utility model aims to provide a ceramic crusting type fire insulation fire resistant cable with reasonable structure and excellent performance.

Therefore, the utility model adopts the technical scheme that: the utility model provides a pottery crust type fire insulation fire resistant cable, includes high-quality copper conductor, high-quality copper conductor peripheral hardware conductor shielding, the conductor shielding is equipped with the insulating layer outward, insulating layer peripheral hardware insulation shielding, insulation shielding peripheral hardware copper strips shielding forms the sinle silk, and a plurality of the sinle silk is peripheral hardware interior pottery fire prevention fire resistant composite tape is wrapped, interior pottery fire prevention fire resistant composite tape is wrapped and is equipped with pottery crust fire insulation layer outside the wrapping, pottery crust fire insulation layer sets up outer pottery fire prevention fire resistant composite tape and is wrapped, outer pottery fire prevention fire resistant composite tape is wrapped and is equipped with halogen-free fire-retardant inner sheath outside the wrapping, set up the armor steel band outside the halogen-free fire-retardant inner sheath, the armor steel band sets up halogen-free fire-retardant overs.

Furthermore, the high-quality copper conductor is a class 2 conductor meeting the requirements of GB/T3956-.

Further, mineral substance is filled between adjacent wire cores.

The utility model has the advantages that: the utility model discloses secondary vary voltage among mainly used high-rise building and the large-scale engineering fire control loop system, on the basis of solving fire control return circuit power supply problem, satisfies the fire control demand simultaneously, can maintain electric power system normal operating in the certain time when the conflagration breaing out, gains the valuable time for personnel evacuation and fire rescue.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, 1 a high-quality copper conductor, 2 a conductor shield, 3 an insulating layer, 4 an insulating shield, 5 a copper strip shield, 6 a mineral substance filling, 7 an inner ceramic fireproof fire-resistant composite tape wrapping, 8 a ceramic incrustation fire-insulating layer, 9 an outer ceramic fireproof fire-resistant composite tape wrapping, 10 a halogen-free flame-retardant inner sheath, 11 an armored steel strip and 12 a halogen-free flame-retardant outer sheath.

Detailed Description

A ceramic incrustation type fire-insulating fireproof cable comprises a high-quality copper conductor 1, a conductor shield 2 is arranged outside the high-quality copper conductor 1, an insulating layer 3 is arranged outside the conductor shield 2, an insulating shield 4 is arranged outside the insulating layer 3, a copper strip shield 5 is arranged outside the insulating shield 4 to form a wire core, a plurality of wire cores are externally provided with an internal ceramic fire-insulating fireproof composite tape wrapping 7, a ceramic incrustation fire-insulating layer 8 is arranged outside the internal ceramic fire-insulating composite tape wrapping 7, an external ceramic fire-insulating composite tape wrapping 9 is arranged outside the ceramic incrustation fire-insulating layer 8, a halogen-free flame-retardant inner sheath 10 is arranged outside the external ceramic fire-insulating composite tape wrapping 9, an armored steel strip 11 is arranged outside the halogen-free flame-retardant inner sheath 10, and a halogen-free flame-retardant outer sheath 12 is arranged outside the.

Further, the high-quality copper conductor 1 is a class 2 conductor meeting the requirements of GB/T3956-.

Further, mineral fillers 6 are arranged between adjacent wire cores.

The following is a further explanation of the present invention to better understand the present invention: the utility model uses the class 2 conductor which meets the requirements of GB/T3956-; the insulation is a three-layer co-extrusion process, the micropore and impurity content is low, and the insulation performance is high; the fire barrier layer can rapidly generate a complete ceramic-shaped hard shell at a high temperature of more than 600 ℃ or under the condition of flame, the hard shell is not melted and dropped, and the fire barrier layer can resist water spraying and mechanical vibration, has excellent electrical isolation performance and also has excellent oxygen and heat insulation effects.

Claims

1. A ceramic crust fire-proof and fire-resistant cable is characterized by comprising a high-quality copper conductor (1), a conductor shield (2) is arranged outside the high-quality copper conductor (1), an insulating layer (3) is arranged outside the conductor shield (2), an insulating shield (4) is arranged outside the insulating layer (3), a copper strip shield (5) is arranged outside the insulating shield (4) to form wire cores, a plurality of wire cores are internally provided with ceramic fireproof fire-resistant composite tape wrapping packages (7), a ceramic crust fire-proof layer (8) is arranged outside the inner ceramic fireproof fire-proof composite tape wrapping (7), an external ceramic fireproof fire-resistant composite tape wrapping (9) is arranged outside the ceramic crusting fire-insulating layer (8), a halogen-free flame-retardant inner sheath (10) is arranged outside the external ceramic fireproof fire-resistant composite tape wrapping (9), an armored steel strip (11) is arranged outside the halogen-free flame-retardant inner sheath (10), and a halogen-free flame-retardant outer sheath (12) is arranged outside the armored steel strip (11).

2. The ceramic incrustation-type fire-insulating and fire-resistant cable as claimed in claim 1, wherein the high-quality copper conductor (1) is a class 2 conductor according to the requirements of GB/T3956-.

3. A ceramic encrusted fire-insulating and fire-resistant cable according to claim 1, characterized in that mineral fillers (6) are arranged between adjacent cores.