Anti-seepage self-healing underground pre-buried cable sheath

Abstract

The invention discloses an anti-seepage self-healing underground pre-buried cable sheath, and belongs to the technical field of cables. The anti-seepage self-healing underground pre-buried cable sheath is characterized in that an inner sheath and an outer sheath which are arranged in in-out sleeving are arranged, and a plurality of repairing embedding bodies are embedded in the inner sheath, and when cracks are generated on the outer end wall of the outer sheath, external water vapor permeates into the outer sheath, the water-soluble heat release bags on the repairing embedded bodies are dissolved in water to expose the reductive iron powder in the water-soluble heat release bags, and the reductive iron powder reacts in air to generate heat, the heat is conducted to a thermal expansion filling layer, and the thermal expansion filling layer is heated to expand to extrude the elastic discharging bags embedded in the thermal expansion filling layer. Therefore, the repair material in the elastic discharge bags is led out, the led-out repair material is used for filling and repairing the cracks of the outer sheath through a hydrolysis heat storage layer, the self-repairing of the damaged parts is completed, the self-healing capability of the outer sheath is realized, the problem of leakage of the cable sheath for a long time is effectively avoided, and the long-acting safe use of the cable is facilitated.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to an anti-seepage self-healing underground pre-embedded cable sheath. Background technique [0002] Wires and cables are used to transmit electric (magnetic) energy, information and wire products that realize the conversion of electromagnetic energy. In a broad sense, wires and cables are also referred to as cables for short. In a narrow sense, cables refer to insulated cables. It can be defined as an aggregate composed of the following parts , one or more insulated wire cores, and their respective possible cladding layers, total protective layers and outer sheaths. Cables can also have additional uninsulated conductors. With the development of the power and energy industries, various Cables are increasingly used in various fields of production and life, and are generally buried underground or laid in cable trenches. [0003] When cables buried in the ground or laid in cable trench...

AI Technical Summary

Problems solved by technology

[0003] When cables buried in the ground or laid in cable trenches are installed or used in relatively harsh places, if they are subjected to mechanical stress or other forms of damage, the sheath on the outer end surface is easily damaged. When the sheath is cracked and damaged , Underground water vapor immerses into the cable, which will cause corrosion of the cable insulation layer for a long time. In the cable accidents, the cable faults caused by the aging damage of the insulation layer account for the largest proportion, which is not conducive to the long-term safe use of the cable.

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