Redesign of a scanner for EC- and UT-measurements in the central bores of large rotors in power plants — With focus on an electromechanically actuated leg-unit for passing steps in bottle-bores without using pneumatic actuation

2012 2nd International Conference on Applied Robotics for the Power Industry (CARPI) Pub Date : 2012-09-01 DOI:10.1109/CARPI.2012.6473350

W. Fischer, D. Loosli, C. Udell

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Abstract

In this paper we present the redesign of a scanner for eddy-current (EC) and ultrasonic (UT) measurements in the central bores of large rotors in power plants. It focuses on an innovative leg-unit which allows for passing steps and thus is able to scan in almost all types of straight bores above 70mm. It is actuated purely electromechanically, using a serial-elastic power transmission with a spindle and foil-potentiometers for measuring force and position. In contrast to previous designs it does not need any additional pneumatic or hydraulic supplies. For this reason, the deployment is significantly simplified both in terms of installation time and logistics. After explaining the application and showing the limitations of previous designs, the main concepts and principles are described, concluding with a brief report on the successful test-runs and an outlook to future extensions.

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重新设计用于发电厂大型转子中心孔中EC和ut测量的扫描仪-重点是用于在不使用气动驱动的情况下通过瓶孔中的步骤的机电驱动腿单元

本文介绍了一种用于电站大型转子中心孔涡流(EC)和超声波(UT)测量的扫描器的重新设计。它的重点是一个创新的腿单元，允许通过的步骤，因此能够扫描几乎所有类型的直孔大于70毫米。它是纯机电驱动的，使用带有主轴和箔电位计的串联弹性动力传动来测量力和位置。与以前的设计相比，它不需要任何额外的气动或液压供应。因此，部署在安装时间和后勤方面都大大简化了。在解释了应用程序并展示了以前设计的局限性之后，描述了主要概念和原理，最后简要报告了成功的测试运行和对未来扩展的展望。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2012 2nd International Conference on Applied Robotics for the Power Industry (CARPI)

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