Alekseeva O. The reliability increase of coke batteries joining assemblies

The thesis is devoted to development of a method of an estimation of technical state of coke batteries joining assemblies and their longevity forecast for design stages of new constructions. Reliability analysis of соke batteries joining assemblies by a method of a tree of failures is carried out. Significant factors of destruction of joining assemblies elements and also the parameters assigned, allowing to take into account effect of totality of factors on engineering condition are defined. Methods of similarity theory and dimensional analysis in complex criteria it is integrated parameters of technical state of units, and also the functions reflecting a degree of effect operational and structural factors on process of the depressurization and loss of joining assemblies functional properties. Тo estimate a degree of effect of destruction factors on longevity and tightness of unit the mathematical model of stress-strained state and temperature condition of joining assemblies is developed. Limiting values of criteria functions for each element and connection of joining assemblies at which it is secured a fault-free operation of elements, and also observance of sanitary specifications on emissions are defined. The periods of a fault-free operation of joining assemblies elements are defined. Efficiency of application of designed constructions for joining assemblies reliability increase is substantiated.