초록 ▼

A gas turbine engine having a turbine with internally cooled, stationary nozzles incorporated into first and second stage nozzle segments and a system for supplying air to the nozzles, for effecting a flow of cooling air into impingement and film cooling relationships with a tip shoe mounted in the

A gas turbine engine having a turbine with internally cooled, stationary nozzles incorporated into first and second stage nozzle segments and a system for supplying air to the nozzles, for effecting a flow of cooling air into impingement and film cooling relationships with a tip shoe mounted in the nozzle case, and for generating a flow of air which first impingement cools a nozzle case lip supporting the upstream ends of the second stage nozzle segments and then acts as a buffer, keeping hot gases from entering the space between the nozzles and the nozzle case.

대표청구항 ▼

A gas turbine comprising: a nozzle case through which heated gases are adapted to flow; a housing surrounding said case in spaced relation thereto; first and second stage, flow directing nozzles integrated into nozzle segments which are supported from said case, said case having a lip supporting the

A gas turbine comprising: a nozzle case through which heated gases are adapted to flow; a housing surrounding said case in spaced relation thereto; first and second stage, flow directing nozzles integrated into nozzle segments which are supported from said case, said case having a lip supporting the upstream ends of the second stage nozzle segments therefrom; means for directing a first stream of air from the space between said housing and said case into the nozzles in the first of said stages; means for directing a second stream of air from said space into impinging relationship with said case and then into nozzles in the second of said stages; and means for so discharging a part of said second stream of air from the interiors of the second stage nozzles into said nozzle case at the leading sides of said nozzles as to cause said air to first impingement cool said nozzle segment supporting lip and to then form a buffer for keeping heated gases flowing through said case from entering the space between said nozzles and said case.