SEALING MEMBERS FOR GAS PREHEATERS, AND SEALING STRUCTURES USING SUCH SEALING MEMBERS FOR GAS PREHEATERS

摘要

SEALING MEMBERS FOR GAS PREHEATERS, AND SEALING STRUCTURES USING SUCH SEALING MEMBERS FOR GAS PREHEATERS A sealing member is adapted to seal a gap between an outer peripheral portion of a rotor and a housing of a gas preheater or a gap between a side face of the rotor and a radial sealing plate. This sealing member includes a main body made of an alumina ceramic and a film formed on a surface of the main body. The film is made of a glaze having a coefficient of thermal expansion smaller than that of the main body. A sealing structure using such a sealing member is also disclosed for sealing the gas preheater. Further, it may be that the sealing member is at least partially made of an inorganic glass and/or a wear resistive ceramic, and a sealing structure is provided with a solid lubricant-molded body to be pressed against a sliding surface of an opponent member on which the sealing member slides.