Blast furnace shell installation centering of coil measuring method and jig null for measurement

摘要

PURPOSE:To quickly, surely and easily execute the centering measurement of iron shell fitting in a blast furnace by shifting the reference center to the center of upper end level of the whole fitting iron shell, measuring the angle in circumferential direction of the iron shell with a transit instrument and measuring radius dimension with a measuring tape. CONSTITUTION:The transit instrument 1 is set to the fitting reference center 13 of blast furnace at furnace bottom 12 in the blast furnace and the iron shell 5 divided in circumferential direction of the blast furnace 4 constructed in a derrick 3 is fitted while measuring the angle in the circumferential direction. Successively, on the fixed metal 10 fitted at upper end of the fitting iron shell 5, a measuring jig composed of a beam 8 with passageway arranging transit instrument setting base 7 providing a slide shoe part 9 guided as being supported and engaged with the fixed metal 10. The above reference center 13 is shifted to the center of upper end level in the whole fitted iron shell 5 on this jig and obtd. The transit instrument 1 is set on this temporary reference center 13 and the angle in the circumferential direction of superposed iron shell 15 is measured and also by using the measure tape from this temporary reference center 13', the radius dimension to the iron shell 15 is measured, and after centering, the iron shell 16, 17 at upper part are superposed in order.