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GEODETIC MONITORING OF THE STRESS STATE OF THE ROTARY KILN SHELL

Sergey Mogilny

Abstract

For a more complete use of information in geodetic measurements of rotary kiln geometric parameters, a method of mathematic simulation of the stress state in the kiln shell is proposed. The essence of the calculation method is to ascertain the stress-strain state of the kiln shell as an elastic statically indeterminate multi-span beam. The disclosure of static uncertainty is performed by the displacement method, which allows to unify the calculation algorithm for kilns with an unrestricted number of intermediate kiln piers and take into account the action of both net loads and additional forces from the support piers displacement on the basis of data obtained during the diagnosis of the kiln geometric parameters. The results of the calculation allow to estimate the degree of installation loads influence and to diagnose the nature and position of possible zones of the kiln shell destruction. Detection of potentially dangerous places on the shell on the basis of geodetic measurements, where there may be unacceptable for lining deformation or even breaks of the shell, are very important data for the safety of the unit operation. The authors developed a remote method of measuring the axis position of the rotation without stopping the production process allows us to give relevant data for the mathematical analysis of the stress state of the kiln shell and to prevent possible negative consequences.

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DOI resolver: doi.org/10.5593/sgem2019/2.2/s09.018

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