THERMAL STRESS ALLEVIATING STRUCTURE FOR HIGH TEMPERATURE EQUIPMENT SUPPORTING DEVICE

摘要

PURPOSE:To alleviate the thermal stress concentration by forming an annular gap of the prescribed gap and prescribed depth on the outer body and outer periphery of a high temperature device such as an atomic power energy utilizing plant or the like, covering it with a supporting body, coupling one end with outer body, and covering the supporting body and the outer body with heat insulator. CONSTITUTION:Since an outer body 9 is covered with a heat insulator 10, it is heated to the vicinity of the internal fluid temperature, but the heat is radiated from the outer surface of the body 9 at the part of an annular gap 5, and the temperature of the part of the body 9 is lowered. On the other hand, a supporting body 4 is raised at its temperature by the temperature rise of the air in the gap 5. However, since the body 4 is convered with the heat insulator 10, heat is not radiated. Accordingly, it is heated to the vicinity of the temperature of the gap 5. Thus, the body 9 and the body 4 are balanced through the gap 5 at the generally equal temperature, and the temperature of the coupling part 7 becomes equal. Thus, the temperature gradient can be alleviated as a whole, thereby moderating the thermal stree concentration.