Easy-peeling-type flame-retardant thermal insulation cable

Abstract

The invention discloses an easy-peeling-type flame-retardant thermal insulation cable which comprises a cable core, a shielding layer arranged at the periphery of the cable core, a flame-retardant thermal insulation layer and an insulating outer sheath layer, wherein talcum powder serving as a filling material which can be adhered to and peeled off from the insulating outer sheath layer is arranged between the flame-retardant thermal insulation layer and the insulating outer sheath layer. The talcum powder arranged between the flame-retardant thermal insulation layer and the insulating outer sheath layer is taken as the filling material, so that the adhesive force between the flame-retardant thermal insulation layer and the insulating outer sheath layer is greatly decreased. Thus, the insulating outer sheath layer can be peeled off from the cable core easily if necessary. Therefore, the peeling workload is greatly lowered and the construction efficiency is improved. Meanwhile, the winding strength of the cable is enhanced by the addition of the talcum powder layer, so that the deformation is decreased. In addition, the cable core can be protected by the flame-retardant thermal insulation layer after the insulating outer sheath layer is peeled off, so that the cable is prevented from being damaged when used in severe environments such as underground coal mines. As a result, the security coefficients of equipment and working personnel are improved.

Description

technical field [0001] The invention relates to the technical field of wires and cables, in particular to an easy-peelable heat-insulating and flame-retardant cable. Background technique [0002] Existing cables are generally multi-core stranded and then compiled into cables. The cable core of the cable is usually wrapped by several layers of polymeric materials. These layers of polymeric materials generally include the shielding layer and insulating layer outside each cable core. Add another insulating shield of the cable, then the metal layer or wire shield, and then the outermost jacket. Since today's cable designs are co-extruded, the layers of polymeric material are tightly bonded. [0003] Tight bonding prevents partial delamination between layers and eliminates voids formed between layers, preventing premature cable failure. However, in engineering connection, in order to connect the cable and accessories more conveniently, it is usually necessary to strip the insul...

AI Technical Summary

Problems solved by technology

[0004] At the same time, when the cable is used in harsh environments such as underground coal mines, it is easily damaged due to long-term contact with harmful substances such as sediment, sewage, and oil. If the cable is damaged, it cannot be monitored by existing staff or equipment in time. , it is easy to cause damage to the equipment, and even cause casualties

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