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

A combined cycle and turbine technology, applied in the field of steam turbines and gas turbines, can solve problems such as heat damage and increase the burden on compressors, achieve high thermal efficiency, reduce fuel consumption, and eliminate heat damage

Active Publication Date: 2016-01-20
TONGHUA NORMAL UNIV
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  • Abstract
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  • Claims
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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

Method used

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

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Embodiment Construction

[0039] The energy-saving concept of dual-mass turbines is to increase the total amount of working fluid converted from thermal work as much as possible. If you want to improve the thermal power conversion capacity of the heat engine, if it is meaningless to change the calorific value of the fuel, you must change the "working medium".

[0040] The dual-mass turbine supplements the high-density liquid working medium to replace the low-density gaseous working medium, uses "residual heat" to make the phase change of the liquid working medium, reduces the compression work of the compressor, and completely replaces the large specific volume with water of small specific volume The air cooled by the combustion chamber and the turbine impeller does not need to compress the cooling medium, but only provides a little delivery power.

[0041] The dual-mass turbine only needs the compressor to provide sufficient oxygen supply air for the fuel according to the "gas-fuel ratio".

[0042] Can...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C3/30F02C7/16
CPCY02E20/16
Inventor 王宝玉朱俊义胡堂林姜成果王军何景华
Owner TONGHUA NORMAL UNIV
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