Mitsubishi Electric ultra-thin inspection robot to extend the use of generators

According to foreign media reports, Mitsubishi Electric Corporation announced that the company has developed an ultra-thin inspection robot with a thickness of only 19.9 mm. It can pass through the narrow space of the generator rotor and stator and check the generator. Remove the generator rotor when checking. This robot can reduce inspection time, reduce inspection costs, increase generator reliability, and ensure availability. Mitsubishi Electric ultra-thin inspection robot to extend the use of generators Ultra-thin inspection robots (Photograph: Mitsubishi Electric Corporation) Traditional inspection methods for generators are done by professionals. They are checked every four years and it takes almost 34 days. Part of the reason why it takes so long is to remove the rotor of the generator during inspection. All power companies have been seeking ways to shorten inspection time to improve inspection accuracy and ensure the availability of generators. The ultra-thin robot developed by Mitsubishi Electric did not remove the rotor during the inspection, shortening the inspection time to 6 days. At the same time, due to the high accuracy of the inspection, it is not necessary to check once every four years as before, and operators do not have to prepare Spare Parts that are not necessary. Therefore, Mitsubishi Electric's new robots are expected to help reduce inspection costs and improve generator availability and reliability. The conventional inspection robot is about 30mm thick, because it is too thick, about 30% of Mitsubishi Electric's generator rotor and stator's narrow space, it can not pass through. The purpose of Mitsubishi Electric's new robot is to conduct a detailed inspection through the rotor and stator of the generator. The inspection items include detailed appearance inspection, whether the stator slot wedges are loosened and the core insulation inspection. The robot has a moving structure consisting of flat discs and caterpillars to ensure low vibration and accurate data collection. It can be applied to almost all large and medium-sized generator inspections of Mitsubishi Electric. The robot's unique percussion device includes a very space-saving cam. It can test generators with ten times the beat of conventional structures. The percussion test adopts the original vibration analysis technology, so that the tightness of the stator wedge can be accurately divided into five levels, while the traditional robot only has three etc.

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