Novel minisize gas turbine

Abstract

A disclosed novel minisize gas turbine comprises a gas compressor, a turbine and a combustion chamber; the combustion chamber is connected with an impeller and a main-shaft divided body; the impeller is connected with a main shaft via a center pull rod; and the combustion chamber is connected with the impeller and the main-shaft divided body via pipes. A 2-0-0 supporting manner is adopted in the overall structure. The gas compressor and the turbine both employ an overhung cantilever end which easily generates relatively large vibration amplitude during working. The axial-direction pre-tightening pulling force generated through cooperation of a locking nut and a turbine pull rod shaft is capable of directly improving the positive pressure of a combination surface of the end tooth, thereby improving the coulomb frictional force between contact surfaces, and further improving the radial rigidity of the shafting overhung cantilever end, so that the radial vibration amplitude of the shafting overhung cantilever end, and also asynchronous radial vibration is avoided between the gas compressor impeller and the turbine. The provided overall structure project has the advantages of simple structure, low processing cost, compact structure and high transmission efficiency.

Description

technical field [0001] The invention relates to gas turbine technology, in particular to a novel micro gas turbine with a shaft power output of 245kW±55kW. Background technique [0002] The micro gas turbine has a series of advanced technical features such as multiple integrated capacity expansion, multiple fuels, low fuel consumption rate, low noise, low emission, low vibration, low maintenance rate, remote control and diagnosis, etc. In addition to distributed power generation, it can also be used for backup Power stations, combined heat and power generation, grid-connected power generation, peak load power generation, etc., are the best way to provide clean, reliable, high-quality, multi-purpose, small-scale distributed power generation and combined heat and power supply, whether for central cities or remote rural areas or even remote areas Both are applicable. [0003] The micro gas turbine is a ground distributed energy power system that my country has focused on resea...

AI Technical Summary

Problems solved by technology

This method is a commonly used overall structural scheme in single-axis rotary power machinery, but it has the following disadvantages: due to the distribution of combustion chambers, the main shaft and bearings are in a high-temperature environment, which greatly reduces the reliability and service life of the whole machine Or face a severe test; maintainability is also greatly reduced

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