초록

A rotary regenerator disc matrix has a face seal with a cross arm and arcuate rim segments joined by prestress clamps to prestrain the arcuate rim seals so as to compensate seal rim twisting or coning and resultant disc face seal leakage as produced by operating thermal gradients across the seal.

대표청구항 ▼

In a regenerator seal assembly having rim segment with a platform including inner and outer edges thereon subjected to a thermal gradient radially thereacross and wherein the platform includes a face seal element thereon located in flat sealed relationship with a face of a rotary matrix regenerator

In a regenerator seal assembly having rim segment with a platform including inner and outer edges thereon subjected to a thermal gradient radially thereacross and wherein the platform includes a face seal element thereon located in flat sealed relationship with a face of a rotary matrix regenerator disc and wherein the thermal gradient across the platform tends to cause it to twist as an inner hotter running edge of the platform is forced closer to the rotary matrix disc and a cooler operating edge is thereby moved outwardly of the disc face so as to move the seal element from a desired flat sealed relationship with the rotary sealed matrix, the improvement comprising: an outwardly directed tab on each opposite end of the rim segment platform, a cross arm seal having a platform thereon, means for clamping the end tabs of said rim segment with respect to said cross arm seal platform to elastically elongate the inner edge of the rim segment platform while elastically compressing the outside edge of the rim segment platform thereby to compensate for twisting or coning of the rim segment platform between the hot inner edge and the cooler outside edge thereof because of thermal gradients produced thereacross so as to tend to maintain the seal face in a flat sealed relationship with the rotating matrix disc.