| 摘要 |
<p>PURPOSE:To easily estimate wall thickness with high accuracy by simple means by setting optical fiber along refractory in a furnace body, making pulse beam incident and detecting temp. based on scattering beam to back side. CONSTITUTION:The optical fiber 4 is wound along outer periphery of the refractory brick 3 at the prescribed interval P. At the time of making the laser pulse beam incident from one end of this optical fiber 4, the scattering is developed at each part and the scattering beam to back side is returned back to the incident side. By detecting the scattering beam to back side, this is fetched into a measured control device 6. In there, the temp. at this scattering position is detected based on intensity ratio of Stokes' beam and anti-Stokes' beam at the time of scattering. By this method, the surface temp. of refractory brick 3 can be measured with high density, and by executing heat transfer simulation analysis with wall thickness arithmetic processor 7 based on this high density two-dimensional temp. distribution, estimation of the wall thickness line of refractory in the blast furnace can be executed with accuracy higher than that of the ordinary method.</p> |
