SYSTEM FOR MEASURING LANCE USING IMPACT ECHO METHOD

摘要

The present invention applies an artificial shock to the lance used in the dry smelting process and measures the lance length by measuring the vibration of the lance caused by the stress wave, thereby immediately confirming the lance length during operation without affecting the smelting process. It relates to a lance length measurement system via shock echoes which is made possible.;The present invention provides a lance length measuring system through shock reflection, comprising: an exciter for exciting a lance; A damping unit attached to the side of the lance to measure longitudinal vibration of the lance excited by the exciter; A signal analyzer for converting the time domain signal of the vibration measured by the damper into a frequency domain signal; And a length measuring unit which receives the frequency domain signal for vibration from the signal analyzer and detects the resonance frequency through the frequency domain signal analysis and measures the length of the lance using the apparent speed of the lance and the corresponding resonance frequency. Characterized in that it comprises a.;Lance, length, shock echo