BYPASS SEAL FOR AIR PREHEATERS

摘要

A bypass seal (56) for a rotary regenerative air preheater includes primary and secondary seal leaves (58, 60) that are joined at a single position longitudinally intermediate their first and second sends. The first end portion (90) of the primary seal leaf (58) extends longitudinally beyond the first end (92) of the secondary seal leaf (60) and the second end portion of the secondary seal leaf (60) extends longitudinally beyond the second end of the primary seal leaf (58). When installed in the air preheater, the first end portion of the primary seal leaf (58) of each bypass seal (56) in one of the seal rings overlaps the second end portion of the secondary seal leaf (60) of an adjacent bypass seal in the seal ring.