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A kind of flexible fireproof cable with combustion performance class A and preparation process thereof

A technology of combustion performance and fireproof cables, which is applied in the direction of cable/conductor manufacturing, insulated cables, and bendable cables, etc. It can solve the problems of high structural hardness, easy moisture absorption, and difficult construction, so as to improve fireproof performance and prevent wire breakage , good stability

Active Publication Date: 2022-07-12
FAR EAST CABLE +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing cables that can meet Class A requirements for combustion performance include BTTZ cables. This cable uses magnesium oxide powder as an inorganic insulating material to isolate the conductor and the sheath. Construction and other issues, so it is necessary to develop a flexible fireproof cable with combustion performance A

Method used

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  • A kind of flexible fireproof cable with combustion performance class A and preparation process thereof
  • A kind of flexible fireproof cable with combustion performance class A and preparation process thereof

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Embodiment 1

[0037] See figure 1 , a combustion performance class A flexible fireproof cable in this embodiment includes a cable core 1, a protective layer 2 and a metal sheath 3 from the inside to the outside; the cable core 1 includes a plurality of insulated wire cores 1-1 stranded together The insulated wire core 1-1 is filled with a filler material 1-2 to form a cable core 1 with a circular cross-section; the insulated wire core 1-1 includes a conductor 1-1-1 and a wire wrapped around the conductor 1 -1-1 Insulation layer 1-1-2 outside.

[0038] The insulating layer 1-1-2 can be made of one kind of insulating material, or can be a composite of multiple insulating materials, and the heat release value of any insulating material is lower than 2.0MJ / kg; see figure 2 , Among the current commonly used insulating materials, only magnesium oxide and mica tapes meet the heat release value of less than 2.0MJ / kg, but magnesium oxide is a rigid insulating material, which is not suitable for th...

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Abstract

The invention discloses a class A flexible fireproof cable with combustion performance, which comprises a cable core, a protective layer and a metal protective layer from the inside to the outside; the cable core comprises a plurality of insulated wire cores twisted; Filled with filler material to form a cable core with a circular cross-section; the insulated wire core includes a conductor and an insulating layer wrapped outside the conductor; the insulating layer is an insulating material with a heat release value below 2.0MJ / kg; The filler material is inorganic fibers with a heat release value lower than 2.0 MJ / kg. The invention prepares the cable by using the insulating material and the filling material with the heat release value lower than 2.0MJ / kg, ensuring that the heat release value of the cable is lower than 2.0MJ / kg, meeting the requirements of Class A combustion performance and at the same time meeting the requirements of fire resistance performance .

Description

technical field [0001] The invention relates to cables, in particular to a class-A flexible fireproof cable with combustion performance and a preparation process thereof. Background technique [0002] Fireproof cable is a special cable used in emergency system, which ensures continuous power supply to emergency equipment under the condition of fire, so as to achieve the purpose of extinguishing fire or rescuing people or property. As people pay more and more attention to fire, domestic requirements for fire protection design of buildings are getting higher and higher. The Ministry of Public Security has also issued corresponding regulations, such as Article 25 in the "Enhanced Technical Requirements for Fire Protection Design of Civil Buildings with a Building Height Greater than 250 Meters (Trial)", the fire protection power supply and distribution lines should meet the following regulations, fire elevators and auxiliary evacuation elevators The power supply wires and cabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/02H01B3/04H01B3/08H01B7/04H01B7/17H01B7/18H01B7/20H01B7/282H01B7/29H01B7/295H01B13/00
CPCH01B7/02H01B7/17H01B7/295H01B7/18H01B3/04H01B3/08H01B7/29H01B7/1875H01B7/292H01B7/189H01B7/20H01B7/2825H01B7/04H01B13/00Y02A30/14
Inventor 王朋徐静周锋霍战营张右刘小九周伟琴
Owner FAR EAST CABLE
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