| 摘要 |
<p>A sealing arrangement for a regenerative air heater of the type having a stator (21) with a peripheral flange (22) and hot and cold end hoods (31, 32) mounted for rotation over respective opposite surfaces of the stator, includes a seal frame (38) which is connected to the cold end hood (32) over an expansion joint assembly (44). At least one seal shoe (42) is connected to the frame (38) and positioned at a selected gap from the stator flange (22). A wheel (52) is rotatably connected to the frame (38) near the seal shoe (42) and rolls against the stator flange (22) to maintain the selected gap while biasing means (60, 64, 68) act to urge the seal shoe towards the flange. The arrangement is automatic in its maintenance of the selected gap. <IMAGE></p> |
