| 摘要 |
A pressure-tight, rotary pipe joint couples rotating, high temperature gas transmission lines. Pressure seals of the pipe joint are maintained at a temperature lower than that of the transmitted gas by thermally insulating the seals from the gas and by pumping a fluid coolant through an annular cavity located adjacent the seals. As an alternate to fluid cooling, a metallic member, in which the pressure seals are disposed, is cooled by means of fins which transfer heat to the adjacent air.
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