HEAT-INSULATING STRUCTURE FOR STRUCTURAL ELEMENT AND HELICAL STRUCTURE

摘要

FIELD: machine building.SUBSTANCE: helical structure comprises scroll with channel for working fluid to flow there inside, and heat-insulating structure. Heat-insulating structure is intended for structural element operating on working fluid heated to high temperature. Heat-insulating structure comprises fastening part, pressure plate, heat-insulating element and adjustment part. Fastening part extends radially from structural element outer wall. Mounting position of pressure plate may be adjusted relative to said fastening part. Plate is attached to said fastening part to form the space between pressure plate and outer wall. Heat-insulating element is arranged between outer wall and pressure plate. Adjustment part is arranged between outer wall and pressure plate to define the space between outer wall and pressure plate by retaining pressure plate ad a distance from outer surface of said wall.EFFECT: heat insulation of turbine inlet or discharge pipe without dirtying working fluid.6 cl, 5 dwg