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High-efficiency fire-resistant heat-dissipating cable

A cable and fire-resistant technology, which is applied in the field of power cables with flame retardant and high temperature resistance and efficient heat exchange, can solve the problem that the integrity of the cable structure and electrical performance cannot be guaranteed, the structure of the armored layer is not firm and stable, and the tensile resistance of the armored layer cannot be guaranteed. Compression strength drop and other problems, to achieve the effect of strict and reliable shielding, avoid wrinkles and contact gaps, and prolong the service life.

Pending Publication Date: 2018-11-13
JIANGSU DONGQIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing steel tape armor structures adopt double steel tape and gap wrapping process, which is to wrap the steel tape on the cable core to form an armor layer. This armor layer structure is not firm enough and stable, and the steel tape is stuck If it is not tight, it is easy to appear the joint gap of the armored steel strip, which will reduce the tensile and compressive strength of the armored layer, which can not guarantee the integrity of the cable structure and electrical performance, and is not conducive to the improvement of the service life of the cable.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] The rare earth refractory layer material components include: 10 wt% of fluororubber, 6.8 wt% of aluminum hydroxide, 3 wt% of rare earth oxide, 1.5 wt% of glycerol, 3 wt% of silicon carbide, 3.6 wt% of lanthanum phosphate, zirconium Gadolinium acid 7.2 wt%, the rest is epoxy resin.

Embodiment 2

[0030] Rare earth refractory material components include: fluorine rubber 8 wt%, aluminum hydroxide 5 wt%, rare earth oxide 2 wt%, glycerol 1 wt%, silicon carbide 2 wt%, lanthanum phosphate 3 wt%, gadolinium zirconate 6 wt%, the remainder is epoxy resin.

Embodiment 3

[0032] Rare earth refractory material components include: fluorine rubber 12 wt%, aluminum hydroxide 8 wt%, rare earth oxide 4 wt%, glycerin 2 wt%, silicon carbide 4 wt%, lanthanum phosphate 6 wt%, gadolinium zirconate 8 wt%, the remainder is epoxy resin.

[0033] Another embodiment of the present invention has the same structure except that the rare earth refractory layer is coated with a rare earth water blocking layer. The material components of the rare earth water blocking layer include: 38 wt% epoxy resin, 6 wt% tung oil, 3 wt% rare earth oxide, 4 wt% magnesium oxide, 4.6 wt% zinc oxide, and the rest is nitrile rubber.

[0034] In the above embodiments, the rare earth oxyearth oxide is cerium oxide or lanthanum oxide.

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Abstract

The invention discloses a high-efficiency fire-resistant heat-dissipating cable. Shielding tapes are coated and connected mutually by wave-shaped overlapped segments at the two sides to form a shielding layer; and heat collecting chambers are arranged between the shielding layer and a heat collecting sheath and are communicated to the outer surface of the cable through cooling holes. Armored steeltapes are coated and connected mutually to form a metal armor layer by steel tape overlap-joint segments at the two sides; embedded holes are formed in the steel tape overlap-joint segment at one side of each armored steel tape; and embedded bosses are arranged at the steel tape overlap-joint segment at the other side of the armored steel tape. When overlapped joint is performed, the embedded bosses are embedded into the embedded holes. Besides, a rare-earth fire-resistant layer is made of a material comprising 8wt% to 12wt% of fluororubber, 5wt% to 8wt% of aluminum hydroxide, 2wt% to 4wt% ofrare earth oxide, 1wt% to 2wt% of glycerol, 2wt% to 4wt% of silicon carbide, 3wt% to 6wt% of lanthanum phosphate, 6wt% to 8wt% of zirconic acid gadolinium, and remainder being epoxy resin. The cablehas the good high-temperature-resistant and flame-retardant performances; heat can be dissipated efficiently; and the cable has the stable structural integrity and the good mechanical performance.

Description

technical field [0001] The invention relates to a power cable for transmitting electric energy, in particular to a power cable with flame retardancy, high temperature resistance and efficient heat exchange. Background technique [0002] With the continuous increase of high-rise buildings, hospitals, hotels, stations and airports, as well as the construction of subways, urban rail transit, and large public facilities, the importance of fire safety has become increasingly prominent, and the amount of cables laid in buildings has doubled. It is imperative to use fire-resistant, flame-retardant and high-temperature resistant cables for power supply, especially for power cables used in important places such as high-rise buildings, subways, tunnels, power plants, and nuclear power plants. The special function of flame retardant to ensure the safe operation of the cable. [0003] The basic structure of a power cable mainly includes a conductor core, an insulating layer, a shieldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B7/22H01B7/28H01B7/29H01B7/295H01B7/42H01B9/02C08L63/00C08L27/12C08K13/02C08K3/22C08K3/34C08K3/32C08K3/24C09D109/02C09D163/00C09D7/61
CPCH01B7/0216H01B7/0291H01B7/225H01B7/28H01B7/2806H01B7/2813H01B7/292H01B7/295H01B7/42H01B7/421H01B9/021C09D109/02C08L63/00C09D7/61C08L2201/02C08L2203/202C08K2003/2227C08K2003/222C08K2003/2213C08K2003/221C08K2003/2296C08L27/12C08K13/02C08K3/22C08K3/34C08K3/32C08K3/24C08L91/00Y02A30/14
Inventor 王子纯崔淦泉吴荣美徐亚东何云娟韩桂平陈彩云
Owner JIANGSU DONGQIANG
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