INSULATED PIPE CONSTRUCTION

摘要

An insulated pipe construction avoids deterioration of the refractory due to thermal cycling by providing means for supporting the refractory material against the force of gravity without restraining movement of the refractory material due to thermal expansion thereof. Excessive hoop stresses in the shell of the conduit due to thermal expansion of the refractory material can be prevented by providing a crushable layer of insulating fiber board inbetween the refractory material and the inner surface of the shell.