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Title: Active bypass flow control for a seal in a gas turbine engine

An active bypass flow control system for controlling bypass compressed air based upon leakage flow of compressed air flowing past an outer balance seal between a stator and rotor of a first stage of a gas turbine in a gas turbine engine is disclosed. The active bypass flow control system is an adjustable system in which one or more metering devices may be used to control the flow of bypass compressed air as the flow of compressed air past the outer balance seal changes over time as the outer balance seal between the rim cavity and the cooling cavity wears. In at least one embodiment, the metering device may include a valve formed from one or more pins movable between open and closed positions in which the one pin at least partially bisects the bypass channel to regulate flow.
Inventors:
;
Issue Date:
OSTI Identifier:
1338923
Assignee:
SIEMENS ENERGY, INC. (Orlando, FL) NETL
Patent Number(s):
9,540,945
Application Number:
14/192,974
Contract Number:
FC26-05NT42644
Resource Relation:
Patent File Date: 2014 Feb 28
Research Org:
SIEMENS ENERGY, INC. Orlando, FL (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 33 ADVANCED PROPULSION SYSTEMS

Works referenced in this record: