Flexible fire-proof and explosion-proof blanket for cable intermediate joint

Abstract

The invention relates to a flexible fire-proof and explosion-proof blanket for a cable intermediate joint, which comprises a fire-proof heat-insulation outer sheath, a fire-proof heat-insulation inner sheath, and a fire-proof cotton layer, an expandable graphite particle layer, a graphite-based flexible blanket, an explosion-proof fiber layer and a waterproof fiber layer which are clamped between the fire-proof heat-insulation inner sheath and the fire-proof heat-insulation outer sheath and are sequentially laminated, the peripheral edges of the fire-proof heat-insulating outer skin and the fire-proof heat-insulating inner skin are sewn together, a plurality of strapping tapes are sewn on the fire-proof heat-insulating outer skin side by side, and the fire-proof explosion-proof blanket is wrapped at the intermediate joint of the cable through the strapping tapes. The flexible fire-proof and explosion-proof blanket has excellent comprehensive protection performance, especially fire-proof and explosion-proof performance, the intermediate joint of the cable is coated through the strapping tapes in the using process, and the flexible fire-proof and explosion-proof blanket is convenient to use and install and can be repeatedly used.

Description

Technical field [0001] The invention relates to the technical field of cable protection materials, and in particular to a flexible fire-proof and explosion-proof blanket used for cable intermediate joints. Background technique [0002] Wires and cables are the carriers of power transmission. With the development of society and the improvement of the quality of life, on the one hand, there are a large number of traditional above-ground cables, pipes, and underground public facilities. As relatively weak links in the power system, due to thermal expansion and contraction of cables, they have been exposed to water for a long time. It operates in water (sewage) and is affected by moisture. Cable intermediate joints are very prone to failure under overloaded working conditions. Huge energy will be released instantly at the fault point. In severe cases, fire or explosion will occur, accompanied by the physical processes of electrostatic radiation, electromagnetic radiation, therma...

AI Technical Summary

Problems solved by technology

The intermediate joint of the cable is prone to failure under overload conditions, and huge energy will be released instantly at the fault point, which will cause fire or explosion in severe cases, accompanied by physical processes such as static radiation, electromagnetic radiation, thermal radiation, pressure radiation, and It involves the laying of other cables in the same ditch, which causes great inconvenience to the stable operation of the power system and people's lives, and even threatens people's lives.

Under the condition of narrow space, if relevant personnel rush to repair multiple cables at the same time, not only the work intensity will be high, but also due to the complicated process of the intermediate joint, the repair work time will be greatly prolonged, which is not conducive to the rapid recovery of power consumption

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