| 摘要 |
PURPOSE:To secure sufficient breating action even under changing pressure and thereby keep the pressure balance on the inner and sides of a heat insulating plate, by installing the heat insulating plate with unevenness in such a way that its inner and outer sides are in communication with the mating face of a pressing member, which faces the insulating plate to enclose the insulation set over the inside surface of a gas turbine casing. CONSTITUTION:To a stud bolt 3, a pair of pressing members 4', 6' are fastened in such a way as facing a heat insulating plate 5, which encloses a heat insulation 2 set over the inside surface of a casing 1. Unevenness 4a, 6a is provided at the surface mating with these pressing members 4', 6' so as to form an air passage D for communication of the outer side of said insulating plate with its inner side. Thereby the air contained by said insulation 2 is released rapidly even when the pressure of a hot air stream 8 sinks abruptly, to cause reduction of the pressure difference between both sides of said insulating plate 5. Thus the insulation 2 is secured with good breathing action. |
