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本文从钢管无损探伤装置(NDT)的工作原理分析中,提出对进入NDT的钢管移动速度的特定变速要求,通过对实现这一要求的NDT辊道台液压系统的说明,分析了高频响应三级控制电液比例阀在系统中的作用与特点。
Based on the analysis of the working principle of the NDT equipment, this paper puts forward the specific requirements for the speed of the steel pipe entering the NDT. Based on the description of the NDT roller table hydraulic system to achieve this requirement, Level control electro-hydraulic proportional valve in the system’s role and features.