Method for reducing self-consumption power of dual-mass combined cycle turbine

Abstract

The invention relates to the technical fields of gas turbines and steam turbines, namely, a method for reducing the self-consumption work of a gas turbine by a dual-mass combined cycle turbine. It is to replenish the liquid working medium to the combustion chamber, so that the liquid working medium undergoes a phase change, reduces fuel consumption, replaces low-density air, reduces the compression work consumption of the compressor, and fully provides the remaining shaft work to the load. The compressor only needs to provide a sufficient amount of oxygen supply air for the fuel according to the "gas-fuel ratio", and only needs 20~25% of the turbine work, and the remaining 75% of the shaft work is fully provided to the load. Supplement the liquid working medium, the liquid second working medium absorbs the heat of vaporization in the dual-mass turbine, replaces the low-density air to cool the combustion chamber and impeller, the fuel consumption rate is doubled, and the oxygen supply ratio is also reduced in the same proportion , the compression work consumed by the compressor is naturally reduced in proportion, reducing self-consumption work and improving mechanical efficiency are the objectives of the present invention.

Description

technical field [0001] The invention relates to the technical fields of gas turbines and steam turbines, that is, a dual-mass combined cycle turbine method for eliminating thermal damage, improving thermal efficiency, and reducing self-consumption work for gas turbines. It is suitable for the power source of large and small walking machines and table machines on land and water. Background technique [0002] In the prior art, because: "'heat' cannot be directly converted into mechanical work, and must be aided by working fluid". "Heat~working medium-mechanical work", the source of "heat" is the calorific value of the fuel, which is a fixed value; "working medium" is the medium for converting heat and work, and it is precisely fixed by the "gas-fuel ratio" and the structure of the engine. A fixed value; "mechanical work" is to convert fixed "heat" with a fixed "working medium", and the result of "mechanical work" must also be a fixed value. [0003] Therefore, the result obt...

AI Technical Summary

Problems solved by technology

[0011] In order to improve thermal efficiency, the gas turbine blindly increases the working temperature, causing serious thermal damage; in order to reduce thermal damage, it is necessary for the compressor to provide a large amount of cooling air. Increased burden on the compressor

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