Polyvinyl chloride insulating polyvinyl chloride sheath fire-resistant power cable
A polyvinyl chloride sheath and polyvinyl chloride technology, which is applied in the field of power cables, can solve the problems of changing the performance of the insulating layer, harming the human body, and being easy to burn, and achieve the effects of improving fire resistance, high insulation reliability, and prolonging service life.
Inactive Publication Date: 2013-09-11
江苏云飞电力科技有限公司
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Problems solved by technology
[0002] The current-carrying capacity of the cable is usually related to the cross-sectional area of the conductor core. When the current increases, the temperature of the conductor will increase. When the temperature of the insulating layer covered by the conductor exceeds the upper limit, the performance of the insulating layer will change, thereby The insulation reliability of the insulating layer is greatly reduced, which affects the service life of the cable
[0003] The existing ordinary cables have problems of poor structural stability and flammability, so the safety level of electrical circuits and the flame retardancy of cables have attracted more and more attention
[0004] At the same time, the fire resistance of the current cables is poor. Once a fire occurs, the cables will generate a large amount of smoke when they burn, making rescue work difficult. equipment according to a certain amount of damage
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[0024] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0025] Such as Figure 1-Figure 8 Shown is a polyvinyl chloride insulated polyvinyl chloride sheathed fire-resistant power cable of the present invention, which includes at least one metal conductor 1, each metal conductor 1 is covered with a fire-resistant layer 2, and the fire-resistant layer 2 improves the fire-resistant effect of the cable. It can effectively prevent the cable from burning after a fire to produce a large amount of smoke and the halogen acid corrosive gas released by the burning of halogen-containing substances from harming the human body and equipment. The insulation layer 3 makes the insulation reliability of the cable high, and the PVC ...
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The invention relates to a polyvinyl chloride insulating polyvinyl chloride sheath fire-resistant power cable which comprises at least one metal conductor, wherein each metal conductor is wrapped with a fire-resistant layer, each fire-resistant layer is wrapped with a polyvinyl chloride insulating layer, each polyvinyl chloride insulating layer is wrapped with a polyvinyl chloride outer sheath layer, and a wrapping belt layer is arranged between each polyvinyl chloride insulating layer and each polyvinyl chloride outer sheath layer. The cable is large in insulating reliability and good in anti-flaming effect, and is used for indoor places, tunnels, cable ducts and other occasions which do not bear external mechanical force.
Description
technical field [0001] The invention relates to the technical field of power cables, in particular to a polyvinyl chloride insulated polyvinyl chloride sheathed fire-resistant power cable. Background technique [0002] The current-carrying capacity of the cable is usually related to the cross-sectional area of the conductor core. When the current increases, the temperature of the conductor will increase. When the temperature of the insulating layer covered by the conductor exceeds the upper limit, the performance of the insulating layer will change, thereby The insulation reliability of the insulating layer is greatly reduced, which affects the service life of the cable. [0003] The existing ordinary cables have problems of poor structural stability and flammability, so the safety level of electrical circuits and the flame retardancy of cables have attracted more and more attention. [0004] At the same time, the fire resistance of the current cables is poor. Once a fire...
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IPC IPC(8): H01B9/00
Inventor 胡建亚
Owner 江苏云飞电力科技有限公司