A compact micro gas turbine

Abstract

The invention discloses a compact micro gas turbine, which mainly comprises an air inlet channel, an air compressor, a combustion chamber, a turbine, a shaft system installing body, a shaft and a shell, wherein the air compressor is a single-stage centrifugal air compressor; the combustion chamber is a full ring combustion chamber; the turbine is a single-stage concentric turbine; the air inlet channel is connected with a front flange through a screw; an inner ring of a diffuser and an outer ring of the diffuser are welded on the front flange; the direction of air flow is changed from radial to axial after passing through the diffuser; the shaft system installing body is fixed in the inner ring of the diffuser; the turbine and the shaft are integrally machined; after the turbine shaft penetrates through the shaft system installing body, the air compressor is arranged at the front end of the turbine shaft and is locked through an air compressor wheel locking nut; the rear end of the shaft system installing body is connected with the installing plate of the turbine through screws; the rear end of installing plate of the turbine is fixed with the front end of a guider of the turbine; the combustion chamber is arranged outside the shaft system installing body and axially covers the front half part of the turbine; the direction of the air flow is changed from axial to radical after passing through the combustion chamber; the air flow impacts the turbine through the guider of the turbine; the guider of the turbine, the rear end of the combustion chamber and the shell of the turbine are collectively fixed with a rear flange.

Description

technical field [0001] The invention relates to a gas turbine, in particular to a compact micro gas turbine. Background technique [0002] Micro gas turbine refers to a low-power gas turbine with a stand-alone power within hundreds of kilowatts. It can use natural gas, biogas, gasoline, diesel and alkanes as fuel. Micro gas turbines can be used as the core device of distributed energy technology to realize efficient energy utilization of combined cooling, heating and power. Micro gas turbines can also be used in aviation, aerospace and other fields, and can also be used in military vehicle auxiliary power units, vehicle hybrid power units, etc. [0003] Micro gas turbines developed earlier in foreign countries. The United States, Japan and some European countries are researching micro gas turbines and developing their application functions. Now a variety of products have entered the market. Domestically, micro gas turbines are a major project in the field of energy technol...

AI Technical Summary

Problems solved by technology

Some micro gas turbines use a single-tube combustor, the distance from the compressor outlet to the combustor inlet is long and there are several deflections, the airflow pressure loss is large, and the volume is also large

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