ВПЛИВ НАВОДНЮВАННЯ СТІНКИ КОЛЕКТОРА БАРАБАНА ПАРОВОГО КОТЛА НА ЙОГО МІЦНІСТЬ ТА ДОВГОВІЧНІСТЬ ЗА ТЕРМОЦИКЛЮВАННЯ

Abstract

The cyclic resource of the collector drum of boiler from exposure to the entire spectrum of unsteady

regimes during its operation estimated using the criterion of limit accumulated damage. It was found that most

damages occured on the outer wall of the drum in the vicinity of holes. A study of different forms of holes and

found that the maximum local stresses occur in the vicinity of the hole at the peak of holes. It was shown that

circular holes are the most optimal form because lifetime of collector with such holls is 40% larger than with the

holes elliptical shapes. Hydrogen reduces longevity drum for all forms holes for the investigational treatment

burden to 30%.