Air seal assemblies
AssigneeBabcock Power Services, Inc.
InventorsJoshua Creelman, Guillermo Vedani
Life of this patent
Estimating the term…
Abstract
A yoke air seal assembly for sealing a vertical pulverizer yoke includes a yoke seal housing ring having a plurality of circumferential segments mounted together end to end in a ring. A seal ring is mounted radially inside the housing ring. The seal ring has a radially inner face having a plurality of grooves defined therein for forming a labyrinthine air seal against a pulverizer yoke. The seal ring can be segmented into a plurality of circumferential seal ring segments. The segmented ring configuration facilitates installation and replacement of yoke seal components, increases operational lifetime thereof, and reduces down time for such installation and replacement.
Claims19
A yoke air seal assembly for sealing a vertical pulverizer yoke comprising:
- a) a yoke seal housing ring including a plurality of circumferential segments mounted together end to end in a ring;
- and
- b) a seal ring mounted radially inside the housing ring, wherein the seal ring has a radially inner face having a plurality of grooves defined therein for forming a labyrinthine air seal against a pulverizer yoke.
A vertical pulverizer for particle size reduction comprising:
- a) a sealed compartment including a grinding table and a plurality of roller wheels mounted in opposition thereto within the sealed compartment, wherein the roller wheels and grinding table are configured and adapted to grind particles therebetween for particle size reduction;
- b) a yoke mounted to support the grinding table;
- and
- c) a yoke air seal assembly mounted around the yoke for sealing the sealed compartment at a seal location around the yoke, the yoke air seal assembly including:
- i) a yoke seal housing ring including a plurality of circumferential segments mounted together end to end in a ring;
- and
- ii) a seal ring mounted radially inside the housing ring, wherein the seal ring has a radially inner face having a plurality of grooves defined therein for forming a labyrinthine air seal against the yoke.
A kit for a yoke air seal assembly for sealing a vertical pulverizer comprising:
- at least one circumferential yoke seal housing ring segment configured and adapted to be mounted together end to end with at least one other circumferential segment to form a housing ring.
Dependencies are inferred from the claim text.