| 摘要 |
PURPOSE:To provide a high-temperature seal sliding device for a heat exchanger of rotary and heat regenerative type, which is surpassing in resistance to heat and resistance to wear, and of which resistance to slide is small. CONSTITUTION:Coaxial internal and external annular grooves 12a and 12b are provided to a holder 12 which is fixed to a casing 9 by a bolt 11. A sealing part 13, being annularly formed of highly heat-resistant and wear-resistant material such as a sinter- molded body of which main constituent is boron nitride, for example, is fixed to the internal annular groove 12a, forming a flow path 3 for high-temperature gas and part of heated gas flow path for the gas after excanging of heat. On the other hand, a sliding part 14, being annularly formed of a non-heat-resistant and wear-resistant material such as carbon graphite, for example, is fixed to the external annular groove 12b so as to be positioned between low-temperature gas passages 15 and 15'. The low-temperature gas passages 15 and 15' are connected to each other by providing a plurality of cutout parts 14a to the sliding part 14, while a heat-insulating part 16 is provided to the outer periphery of a flow path 3 for high-temperature gas. A high-temperature seal sliding device is composed of a highly heat-resistant part 13 and a highly wear-resistant sliding part 14, so that highly heat-resistant and wear-resistant, high-temperature seal sliding device can be obtained as the result. |
