Patent ID: 8973361
Filing Date: 2015-03-10
Classification: F01D,F02B,F02C,F02M,F04D,F05D,Y02T

Abstract:
1. A seal air supply system for an exhaust gas turbine turbocharger in a gas engine, in which a mixture of air and part or all of fuel gas pre-mixed upstream of the exhaust gas turbine turbocharger is supplied as intake gas to a combustion chamber through the exhaust gas turbine turbocharger, the seal air supply system comprising: a seal air compressor provided separately from the exhaust gas turbine turbocharger; a seal air supply passage guiding compressed air generated by the seal air compressor to a seal air supply part of the exhaust gas turbine turbocharger as seal air of the exhaust gas turbine turbocharger; a surplus air inlet passage bifurcating from the seal air supply passage and guiding surplus air of the seal air fed to the seal air supply part to a compressor outlet side of the exhaust gas turbine turbocharger; and a seal air release passage returning the seal air that has flowed through the seal air supply part to a compressor inlet side of the exhaust gas turbine turbocharger.