Supercritical carbon dioxide circulation electrical power generating system suitable for regenerative cooling detonation combustor

Abstract

The invention provides a supercritical carbon dioxide circulation electrical power generating system suitable for a regenerative cooling detonation combustor. The supercritical carbon dioxide circulation electrical power generating system comprises a fuel tank, a booster pump, a detonation combustor wall face, a first-level regenerative cooling channel, a second-level regenerative cooling channel,a third-level regenerative cooling channel, a turbine, a compressor, a first-level heater, a second-level heater, an auxiliary heater, an excitation generator, a heat regenerator, a cooler, a fuel nozzle and an electronic control unit. According to the supercritical carbon dioxide circulation electrical power generating system, an interstage heat release axial-direction three-level regenerative cooling method is adopted, the good process matching of supercritical-state hydrocarbon fuel heat release and carbon dioxide heat absorption is fully utilized, heat transfer irreversible losses are reduced, and a high-temperature heat source can be efficiently and stably provided for supercritical carbon dioxide power generation in a circulation mode; and meanwhile, the regenerative cooling capacity is improved remarkably. In addition, air and part of hydrocarbon fuel are used as electrical power generating circulation cooling media in the system, the cold source condition nearby the carbon dioxide quasi-critical temperature is provided, circulation compressing power consumption is reduced, circulation cooling released heat is recycled, and thermoelectric conversion efficiency of the systemis made higher.

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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Problems solved by technology

[0006] Combined with the existing research and design scheme of the regenerative cooling detonation combustor, the present invention proposes a supercritical carbon dioxide cycle power generation system suitable for the regenerative cooling detonation combustor, which solves the problem of insufficient regenerative cooling capacity and satisfies high-frequency long-term work High-performance power and power transmission requirements of detonation engines under certain conditions

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