초록 ▼

An industrial gas turbine engine capable of operating at higher temperatures than air cooled nickel based alloy airfoils in the turbine. The engine burns stoichiometric or rich to produce a hot gas stream that is mostly without oxygen, and the turbine airfoils are made from a high temperature resist

An industrial gas turbine engine capable of operating at higher temperatures than air cooled nickel based alloy airfoils in the turbine. The engine burns stoichiometric or rich to produce a hot gas stream that is mostly without oxygen, and the turbine airfoils are made from a high temperature resistant material such as a refractory material that also has poor oxidation resistance. A second small gas turbine engine is used to compress nitrogen gas that is used to pass through the turbine airfoils for cooling where the film cooling nitrogen gas is injected into the hot gas stream but without igniting the fuel rich gas stream.

대표청구항 ▼

I claim the following: 1. An industrial gas turbine engine comprising:a main gas turbine engine connected to an electric generator to produce electric power, the main gas turbine engine including a main compressor and a main combustor and a main turbine;a smaller gas turbine engine compressing a coo

I claim the following: 1. An industrial gas turbine engine comprising:a main gas turbine engine connected to an electric generator to produce electric power, the main gas turbine engine including a main compressor and a main combustor and a main turbine;a smaller gas turbine engine compressing a cooling fluid for the turbine in the main gas turbine engine, the smaller gas turbine engine including a small compressor and a small combustor and a small turbine;an air separator to produce a nitrogen gas;a low pressure nitrogen line to connect the nitrogen gas from the air separator to an inlet of the small compressor;a high pressure nitrogen line to connect an outlet of the small compressor to a cooling circuit within hot parts of the main turbine;a compressed air line to connect the main compressor to the small combustor to supply compressed air for combustion;the main turbine including hot parts formed from a high temperature resistant material but poor oxidation resistance selected from a group of Niobium, Molybdenum, Tungsten, Rhenium, Tantalum, and oxidation dispersed strengthened alloys; and,the main combustor operating in a stoichiometric or fuel rich combustion to produce a hot gas stream for the main turbine that is low in oxygen.