Self-temperature-sensing and self-early-warning longitudinal water-blocking overhead cable, manufacturing method thereof and testing equipment

Abstract

The invention relates to a self-temperature-sensing and self-early-warning longitudinal water-blocking overhead cable which settles defects in prior art. The self-temperature-sensing and self-early-warning longitudinal water-blocking overhead cable is characterized in that the self-temperature-sensing and self-early-warning longitudinal water-blocking overhead cable comprises a plurality of conductors, a semi-conductive water blocking tape and a crosslinked polyethylene insulating layer; all conductors are packaged in the semi-conductive water blocking tape; the crosslinked polyethylene insulating layer is arranged outside the semi-conductive water blocking tape; a black temperature-sensing color master batch and an ultraviolet resisting absorber are added into the crosslinked polyethyleneinsulating layer; water blocking powder is longitudinally applied between all the conductors and the semi-conductive water-blocking tape realizes longitudinal wrapping.

Description

technical field [0001] The invention relates to a cable, in particular to a self-temperature self-warning longitudinal water-blocking aerial cable, a manufacturing method and a detection device thereof. Background technique [0002] The current overhead insulated cable conductors are multi-stranded conductors. Although they are compact conductors, there are still gaps between the single wires. This cable is generally used in the open air, and the two ends of each overhead cable are crimped in the open air. , often because water enters the conductor after raining, the aluminum conductor will corrode after a long time, and the water will flow into the inside of the conductor along the gap of the conductor, resulting in a large length of water entering the conductor, affecting the product quality, and the cable insulation is easy to age , causing a malfunction. In addition, the traditional overhead cable cannot visually identify the current operating load of the cable from the...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the overhead insulated cable conductor in the prior art does not block water or the water blocking effect is not good; when the current is overloaded during use, it is impossible to remind the user of the safety of this wire and whether it is suitable for this wire by changing color according to the overhead cable itself. Occasionally, the problem is only discovered when it is burned or an accident occurs. A self-sensing and self-warning longitudinal water-blocking overhead cable and its manufacturing method and testing equipment are provided.

The invention has the characteristics of environmental protection, weather resistance, temperature-sensing discoloration warning, radial and longitudinal water blocking, and solves the problem that when the existing overhead cables are used to exceed the safety current overload and cause temperature rise, the cables can be discolored through insulation to remind users of the safety of this line The difference in the heat generated by the overhead cable load operation will cause the temperature of the overhead cable itself to be different. By adding a temperature-sensitive color-changing material to the insulation material of the cable, the insulation can change color for temperature changes to achieve early warning.

Images