论文部分内容阅读
在连续化的冶金生产中,为了改善产品质量、提高产量,十分需要获知铁水钢水流量这一重要参数。为此,我们根据导电体在高频电磁场下产生趋肤效应的原理,研制成了“非接触法铁水钢水流量计”。 一、测量原理 1.导体内的电流分布及趋肤深度 在形成高频电磁场的空间内插入导电物体时,由于趋肤效应,该物体必排斥高频电磁场,假定被测流体不带磁性(磁性体在居里温度以上)而只是导电的,那末有效电流主要集中在导体表面附近的薄层上,对于这种有限而表面弯曲的流体来说,它的曲率
In the continuous metallurgical production, in order to improve product quality, increase production, it is necessary to know the molten steel flow rate of this important parameter. To this end, we have developed into a “non-contact molten iron flow meter” based on the principle that the conductor produces skin effect under the high-frequency electromagnetic field. I. MEASURING PRINCIPLE 1. Current Distribution and Skin Depth in Conductor When a conductive object is inserted into a space forming a high-frequency electromagnetic field, the object repels the high-frequency electromagnetic field due to the skin effect, assuming that the measured fluid is not magnetic (magnetic Body is above the Curie temperature) and is only conductive, then the effective current is mainly concentrated on the thin layer near the surface of the conductor, and for this limited surface-curved fluid its curvature