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|1. (WO2017034061) DEVICE FOR MONITORING FRACTURING OF STEM OF VALVE DRIVER|
|Applicants:||KOREA INSTITUTE OF MACHINERY & MATERIALS
|Title:||DEVICE FOR MONITORING FRACTURING OF STEM OF VALVE DRIVER|
A device for monitoring fracturing of a stem of a valve driver is fixed to at least one of a driving stem and a valve stem of a valve driver, diagnoses or predicts fracturing of the driving stem or the valve stem, and comprises upper and lower fixing portions and a plurality of post portions. The upper and lower fixing portions are spaced from each other by a predetermined distance. The plurality of post portions have both ends fixed to the upper and lower fixing portions, respectively, and extend in a direction parallel with the direction of extension of the driving stem or the valve stem.