Environment temperature reference object signboard applied to infrared detection of electric power system

Abstract

The invention discloses an environment temperature reference object signboard applied to infrared detection of an electric power system. The signboard comprises a metal steel framework and a black thick film fixed to the metal steel framework, and the black thick film is fixed to the metal rigid framework; the black thick film is an aluminum sheet, and the outer end surface of the aluminum sheet is coated with a black paint layer; an adhesive layer is arranged on the inner end surface of the aluminum sheet. According to the signboard, the black thick film with the emissivity of approximately 1is used, different heights are set according to the voltage grades of electrified equipment, the black thick film is flatly distributed on a portal frame near the equipment in an adhesive mode, thenwhen it is found that the equipment is abnormal and heats during infrared detection, an infrared imaging instrument can be immediately used for directly detecting the environment temperature referenceobject signboard near the abnormal equipment to detect environment temperature reference object temperature during detection, the signboard is convenient and scientific to use, time and effort for defect judgment are saved, the work efficiency is greatly improved, the accuracy of sampling data is greatly improved, and field practicability and the generalizability are extremely high.

Description

technical field [0001] The invention relates to the technical field of infrared measurement, in particular to an ambient temperature reference identification plate applied to infrared detection of a power system. Background technique [0002] At present, many infrared defects will be found in the infrared thermal imaging inspection during the operation of the power system. For these defects, operators need to judge whether they are serious or critical defects according to relevant regulations, and then take the next step (whether to continue to operate or stop immediately) ) to make an accurate judgment. However, there are some situations where the absolute temperature of the infrared test data is not high but the relative temperature difference is large. The level of these infrared defects is not easy to judge directly on the spot. It is necessary to calculate the relative temperature difference for qualitative. The ambient temperature reference value involved in the calcul...

AI Technical Summary

Problems solved by technology

However, there are some situations where the absolute temperature of the infrared test data is not high but the relative temperature difference is large. The level of these infrared defects is not easy to judge directly on the spot. It is necessary to calculate the relative temperature difference for qualitative. The ambient temperature reference value involved in the calculation is A very important variable that directly affects the determination of defect levels

At present, the method of selecting ambient temperature reference objects for on-site work in the system is very confusing. Some use the surface temperature of the steel structure on the ground, and some directly use the value of the thermo-hygrometer, and the ambient temperature setting in the infrared device has not changed during long-term measurement.

In addition, the ambient temperature near the end of the live equipment at different time points (difference in ambient temperature between morning and evening), at different heights (the surface temperature is higher than that in the sky), and in different installation environments (heat source nearby or in the windward / upwind area) and ground staff The surrounding ambient temperature varies greatly, so the selection of many ambient temperature reference objects is not scientific, so the accuracy of the existing infrared test data judgment is not high, which has a great impact on the operation and maintenance of the power system

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