Gas turbine combustor and gas turbine

gas turbine comprising a compressor, a combustor producing combustion gas using air compressed by the compressor and a gas turbine driven to rotate by the combustion gas, said combustor having a cylindrical liner in which combustion gas is produced and a transition piece for leading the combustion gas to a gas turbine, wherein said cylindrical liner is made of austenitic Fe base casting alloy, Ni base casting alloy or Co base casting alloy, said casting alloy having an average crystal grain diameter of 500 .mu.m or more.

A gas turbine combustor having a cylindrical liner in which combustion gas is produced and a transition piece for leading the combustion gas to a gas turbine, wherein said cylindrical liner is made of a Co base casting alloy comprising by weight 0.04-1.0 C, at most 1% Si, at most 2% Mn, 15-35% Cr, 0.5-20% W, at most 30% Ni and 35-60% Co, and having an average crystal grain diameter of 500 .mu.m or more.

A gas turbine comprising a compressor, a combustor producing combustion gas using air compressed by said compressor and a turbine driven to rotate by the combustion gas, said combustor having a cylindrical liner in which combustion gas is produced and a transition piece for leading the combustion gas to a gas turbine, wherein said cylindrical liner is made of austenitic Fe base casting alloy, Ni base casting allow or Co base casting alloy, said casting alloy having an average crystal grain diameter of 500 .mu.m or more, and said cylindrical liner having cooling projections provided on an outer peripheral portion thereof.

A gas turbine comprising a compressor, a combustor producing combustion gas using air compressed by said compressor and a turbine driven to rotate by the combustion gas, said combustor having a cylindrical liner in which combustion gas is produced and a transition piece for leading the combustion gas to a gas turbine, wherein said cylindrical liner and said transition piece each are made of austenitic Fe base casting alloy, Ni base casting alloy or Co base casting alloy, said casting alloy having an average crystal grain diameter of 500 .mu.m or more.

A combined cycle power generation system which comprises a gas turbine having a combustor producing combustion gas using compressed air compressed by a compressor and a turbine driven to rotate by the combustion gas, and a steam turbine driven to rotate by steam generated by a waste heat recovery boiler recovering the heat of exhaust combustion gas from said gas turbine, said combustor having a cylindrical liner in which combustion gas is produced and a transition piece for leading the combustion gas to a gas turbine, wherein said cylindrical liner is made of austenitic Fe base casting alloy, Ni base casting alloy or Co base casting alloy, said casting alloy having an average crystal grain diameter of 500 .mu.m or more.

A combined cycle power generation system which comprises a gas turbine having a combustor producing combustion gas using compressed air compressed by a compressor and a turbine driven to rotate by the combustion gas, and a steam turbine driven to rotate by steam generated by a waste heat recovery boiler recovering the heat of exhaust combustion gas from said gas turbine, said combustor having a cylindrical liner in which combustion gas is produced and a transition piece for leading the combustion gas to a gas turbine, wherein said cylindrical liner and said transition piece each are made of austenitic Fe base casting alloy, Ni base casting alloy or Co base casting alloy, said casting alloy having an average crystal grain diameter of 500 .mu.m or more.

A gas turbine combustor having a cylindrical liner in which combustion gas is produced and a transition piece for leading the combustion gas to a gas turbine, wherein said cylindrical liner is a casting produced by centrifugal casting of austenitic Fe base casting alloy or Co base casting alloy, and

• wherein said casting alloy has an average crystal grain diameter of 500 .mu.m or more.

A gas turbine combustor having a cylindrical liner in which combustion gas is produced and a transition piece for leading the combustion gas to a gas turbine, wherein said cylindrical liner is a casting produced by centrifugal casting of austenitic Fe base casting alloy, Ni base casting alloy or Co base casting alloy, and

• wherein said Co base casting alloy comprises by weight 0.04-1.0% C, at most 1% Si, at most 2% Mn, 15-35% Cr, 0.5-20% W, at most 30% Ni and 35-60% Co and has an average crystal grain diameter of 500 .mu.m or more.