Cable with load operation monitoring function, particle for arc-shaped temperature-sensing color bar of cable, and co-extrusion method of arc-shaped temperature-sensing color bar

Abstract

The invention relates to a cable with a load operation monitoring function. The cable comprises a conductive unit, a non-hygroscopic belting cushion layer, a plastic isolation sleeve layer, a steel wire armor layer and an outer sheath layer are sequentially arranged outside the conductive unit and a filling strip, and an arc-shaped temperature sensing color bar is arranged on the outer wall of the outer sheath layer; and the arc-shaped temperature sensing color bar and the outer sheath layer are formed by co-extrusion. The particle for the arc-shaped temperature sensing color bar comprises the following components in parts by weight: 100 parts of SG-2 type PVC resin, 3-27 parts of DOS (dioctyl phthalate), 16-20 parts of phenyl alkyl sulfonate, 8-12 parts of chlorinated paraffin, 2-4 parts of tribasic lead sulfate, 0.8-1.2 parts of dibasic lead stearate, 0.8-1.2 parts of Cast, 0.3-0.6 part of a bisphenol A antioxidant, 0.1-0.4 part of a paraffin lubricant, and 0.8-1.8 parts of heat discoloration powder. The particle has excellent acid and alkali resistance, and also has excellent fracture resistance and low temperature resistance, so that the cable can be well protected.

Description

technical field [0001] The invention relates to a preparation method of a cable and its outer layer material, in particular to a co-extrusion method of a cable with a load operation monitoring function and a temperature-sensitive color strip thereof. Background technique [0002] When the wire and cable are running, the conductor itself has impedance, which will generate heat. When the system is overloaded, the temperature generated by the conductor heating will become higher and higher, even exceeding the allowable operating temperature of the insulating material. This phenomenon seriously accelerates the insulation material. Aging and reduction of insulation will affect the service life of the cable, and may even directly cause the insulation to melt at high temperature and the cable short-circuit to explode, especially in the use of high-voltage power cables. Once the cable short-circuit explodes, it will cause huge economic losses and even personal safety problems. . Wh...

AI Technical Summary

Problems solved by technology

[0002] When the wire and cable are running, the conductor itself has impedance, which will generate heat. When the system is overloaded, the temperature generated by the conductor heating will become higher and higher, even exceeding the allowable operating temperature of the insulating material. This phenomenon seriously accelerates the insulation material. Aging and reduction of insulation will affect the service life of the cable, and may even directly cause the insulation to melt at high temperature and the cable short-circuit to explode, especially in the use of high-voltage power cables. Once the cable short-circuit explodes, it will cause huge economic losses and even personal safety problems.

When the cable is overloaded, except for the temperature rise of the cable body, there is no means to directly judge the overloaded operation of the cable by visual inspection.

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