Optical-fiber temperature-measuring power cable

Abstract

The invention relates to an optical-fiber temperature-measuring power cable and belongs to the technical field of cables. The optical-fiber temperature-measuring power cable comprises a three-phase core cabling cable core and an outer sheath, wherein an optical fiber support is arranged in the middle of a three-phase core, round grooves are arranged on the optical fiber support in the direction facing to the three-phase core, a temperature-measuring optical fiber for measuring temperature of the three-phase core is respectively arranged in each groove, the core is formed by a cross-linking semi-conducting inner shielding layer, a cross-linking polyethylene insulating layer and a cross-linking semi-conducting outer shielding layer which are sequentially arranged on the outer surface of a strand copper wire conductor, a wrapping belt is arranged between the cable core and the outer sheath, and a polrvinyl chloride outer sheath is wrapped on the outer surface of the wrapping belt in squeezing mode. The optical-fiber temperature-measuring power cable is reasonable and simple in structure, easy to manufacture, low in cost, good in using performance, favorable for on-line measuring temperature of cables, and capable of alarming when detecting failures and avoiding accidents. The optical fibers can measure the real temperature of the cables in operating, improves carrying capacity of the cables under the allowed operating temperature of the cables and maximumly expresses the transmission capability of the cables.

Description

technical field [0001] The invention relates to a structure of a power cable capable of convenient temperature measurement, belonging to the technical field of cables. Background technique [0002] Power cables are generally composed of three-phase cores and cable cores and outer sheaths. The existing power cable lines lack effective online monitoring methods for the cable operation system. Once the cable is laid and operated, it is in a state of no supervision or supervision is not timely or in place. It is not paid attention until the cable fault occurs, resulting in a high cable failure rate. . A fire caused by a cable fault causes a large area of ​​cable burnout and is forced to shut down, and production cannot be resumed in a short period of time, resulting in major economic losses. In addition, because the load capacity of the cable is calculated theoretically, there is a large margin, and there is a certain waste. From an economic point of view, it is urgent to take...

AI Technical Summary

Problems solved by technology

The existing power cable lines lack effective online monitoring means for the cable operation system. Once the cable is laid and operated, it is in a state of no supervision or supervision is not timely or in place. It is not paid attention until the cable fault occurs, resulting in a high cable failure rate.

A fire caused by a cable fault causes a large area of ​​cable burnout and forced to shut down. Production cannot be resumed in a short period of time, resulting in major economic losses.

In addition, because the load capacity of the cable is calculated theoretically, there is a large margin, and there is a certain waste. From an economic point of view, it is urgent to take measures to ensure that the cable does not exceed the allowable temperature. Maximize the transmission capacity of the cable to obtain greater economic benefits

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