| 摘要 |
<p>A three part seal assembly for sealing the rotatable disk regenerator of a gas turbine engine is disclosed. Each part of the seal assembly generally includes a base having one side carrying low friction means for engaging the regenerator and another side carrying a spring mechanism for making sealing contact with a surface on the engine housing and urging the low friction means into sealing engagement with the regenerator. One part of the seal assembly is in the form of a linear crossbar having a spring mechanism including generally parallel, longitudinally extending spring and retainer members. Each of these members has a first portion affixed to the base and a second portion extending away from the base in cantilever fashion. The cantilevered, second portions of the spring and retainer members are in parallel, spaced-apart relation. A relatively thin, resilient, floating sealing element is loosely constrained between the second portions of the spring and retainer, the sealing element having a sealing edge extending beyond the spring and retainer for sealing engagement with the engine housing. This floating seal arrangement avoids crimping or rippling of the resilient seal element under forces produced by the high temperatures and pressures present during engine operation thereby maintaining the integrity of the seal.</p> |
