A supercritical carbon dioxide cycle power generation system suitable for regenerative cooling of detonation combustors

Abstract

The present invention proposes a supercritical carbon dioxide cycle power generation system suitable for regenerative cooling detonation combustor, including fuel tank, booster pump, wall of detonation combustor, first, second and third regenerative cooling channels, turbine, compressor engine, primary and secondary heaters, auxiliary heaters, excitation generators, regenerators, coolers, fuel nozzles and electronic control units. This system adopts the axial three-stage regenerative cooling method of heat release between stages, and makes full use of the good process matching between the heat release of supercritical hydrocarbon fuel and the heat absorption of carbon dioxide to reduce the irreversible loss of heat transfer, and provide efficient and stable supercritical carbon dioxide power generation cycle While providing a high-temperature heat source, the regenerative cooling capacity is significantly improved; in addition, the system uses air and some hydrocarbon fuels as the cooling medium of the power generation cycle to provide cold source conditions near the pseudo-critical temperature of carbon dioxide, reduce cycle compression power consumption, and recycle cycle cooling Release heat to achieve higher thermoelectric conversion efficiency of the system.

Description

technical field [0001] The invention relates to the field of detonation engines, in particular to a supercritical carbon dioxide cycle power generation system suitable for regenerative cooling of detonation combustion chambers. Background technique [0002] The detonation propulsion engine is a new concept engine based on detonation combustion. In the combustion chamber, the detonation wave generated by detonation combustion is directly used to compress the gas, so that the pressure and temperature of the detonable fuel can be raised rapidly. The purpose of compressing the gas is achieved under the conditions of the components, the structure is simple, the cost is low, and a higher thrust-to-weight ratio can be achieved. In addition, the chemical reaction rate of detonation combustion is extremely fast, and the fresh reactants are converted into high-temperature and high-pressure combustion products before expansion, so detonation combustion is similar to constant volume com...

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