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Title: Regenerator cross arm seal assembly

A seal assembly for disposition between a cross arm on a gas turbine engine block and a regenerator disc, the seal assembly including a platform coextensive with the cross arm, a seal and wear layer sealingly and slidingly engaging the regenerator disc, a porous and compliant support layer between the platform and the seal and wear layer porous enough to permit flow of cooling air therethrough and compliant to accommodate relative thermal growth and distortion, a dike between the seal and wear layer and the platform for preventing cross flow through the support layer between engine exhaust and pressurized air passages, and air diversion passages for directing unregenerated pressurized air through the support layer to cool the seal and wear layer and then back into the flow of regenerated pressurized air.
Authors:
 [1]
  1. (Indianapolis, IN)
Publication Date:
OSTI Identifier:
866477
Report Number(s):
US 4720969
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
regenerator; arm; seal; assembly; seal; assembly; disposition; arm; gas; turbine; engine; block; regenerator; disc; seal; assembly; including; platform; coextensive; arm; seal; wear; layer; sealingly; slidingly; engaging; regenerator; disc; porous; compliant; support; layer; platform; seal; wear; layer; porous; permit; flow; cooling; air; therethrough; compliant; accommodate; relative; thermal; growth; distortion; dike; seal; wear; layer; platform; preventing; flow; support; layer; engine; exhaust; pressurized; air; passages; air; diversion; passages; directing; unregenerated; pressurized; air; support; layer; cool; seal; wear; layer; flow; regenerated; pressurized; air; air passage; thermal growth; engine block; pressurized air; pressurized air; pressurized air; cooling air; seal assembly; seal assembly; seal assembly; turbine engine; gas turbine; assembly including; support layer; support layer; support layer; engine exhaust; regenerator disc; regenerator disc; air passages; relative thermal; arm seal /60/165/