A split-shaft external combustion aerodynamic device and conversion method

Abstract

A non-coaxial external combustion type air power device comprises a turbine-driven air compressing assembly, an air heating furnace and an air power turbine. The turbine-driven air compressing assembly comprises an air compressor and an air compressor driving turbine which are arranged coaxially. The air compressor is driven by the air compressor driving turbine, and thus compressed air is formed. The compressed air is input into the air heating furnace. High-temperature compressed air is formed after the compressed air is heated in the air heating furnace. The high-temperature compressed air is input into the air power turbine, and the air power turbine is arranged to be non-coaxial with the air compressor and the air compressor driving turbine. The high-temperature compressed air is expanded in the air power turbine, then shaft power is output, and exhaust gas is output from the air power turbine after expansion working of the high-temperature compressed air. The exhaust gas is input into the air compressor driving turbine. The invention further provides an external combustion type air power conversion method. According to the device, the air serves as a working medium, adaptability is high, starting and stopping are flexible, and the potential of shaft power outputting of the device is improved easily through the non-coaxial arrangement mode.

Description

technical field [0001] The invention relates to the technical field of thermal machinery, in particular to a split-shaft external combustion aerodynamic device and an external combustion aerodynamic conversion method. Background technique [0002] The external combustion heat engine is a kind of heat engine that uses fuel combustion to heat the circulating working medium and converts heat energy into mechanical energy. Since the combustion products do not participate in the cycle, the advantage of the external combustion heat engine is that it can use various fuels, especially some low-quality and low-quality fuels, such as coal, residual oil, and even combustible garbage. [0003] The most common external combustion heat engine is a steam power plant, which follows the Rankine cycle and generally includes: a water pump, a boiler, a steam turbine and a condenser. Its working principle is: fuel and air are sent into the boiler to burn and burn to form high-temperature flue g...

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Problems solved by technology

[0004] The steam power plant generally adopts a closed cycle, and the volume of the boiler, condenser and other components is huge, which is not conducive to transportation and miniaturization

Due to the need for water as a working medium and cooling medium, the steam power plant consumes a lot of water and is not suitable for working in arid and water-scarce areas

In addition, boilers, condensers and other components have a large heat capacity and take a long time to reach thermal equilibrium, which makes the start-up process of the steam power plant long and inflexible in start-up and stop

[0005] As the main type of external combustion heat engine, steam power plant has the above-mentioned problems, which limits the application of external combustion heat engine in the field of distributed energy, and also limits some low calorific value fuels with large spatial dispersion (such as straw, garbage, etc.) Comprehensive utilization of

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