Probe for local flow rate measurement - in liq. metal, esp. gas-stirred melts or immiscible melts

摘要

In a device for measuring local flow rates in liq. metals, consisting of a permanent magnet and insulated electrodes fitted outside the permanent magnet, the novelty is that (i) the permanent magnet, is magnetised in a plane perpendicular to the probe axis, (ii) the electrodes are positioned in the plane perpendicular to the magnetisation plane, and (iii) the electrodes project beyond the insulation, the free electrode ends being fitted in the region of the permanent magnet end facing the metal flow. ADVANTAGE - The device provides inambiguous measurements of absolute amounts and directions of three-dimensional flow vectors in liq. metals, even in gas stirred melts and immiscible melts (e.g. metal/slag) allowing detection of mean local flow ra s and turbulent fluctuation it produces measurement signals of sufficient size and transmits the signals to a measuring unit without noise.