Electric heating type supersonic ejector experiment system

Abstract

The invention provides an electric heating type supersonic ejector experiment system. An air source is connected with an electric heater through an air path; incoming flow air from the air source is inputted into the electric heater for heating through an air path; the output pipeline of the electric heater is communicated with the inlet end of a supersonic nozzle, the outlet end of the supersonicnozzle is connected with an ejector sleeve, and gas heated and outputted by the electric heater is accelerated by the supersonic nozzle and then enters the ejector sleeve as primary flow to suck secondary flow. The electric heater preheating mode is adopted, the experiment safety is guaranteed, experiment parameters are easy to adjust and data acquisition and analysis are facilitated.

Description

technical field [0001] The invention relates to an ejector test system, in particular to an electric heating type supersonic ejector test system. Background technique [0002] Ejectors are widely used in the industrial field. Since the use of industrial ejectors is basically suction, pressurization, etc., increasing the temperature of the primary flow does not help to improve its ejection performance. Therefore, research on ejectors often It will not involve changing the total primary temperature. [0003] However, for some special applications, such as rocket based combined cycle engine (Rocket Based Combined Cycle, RBCC), it must be applied to the ejector of high total temperature primary flow. For this type of ejector that must be applied to high total temperature primary flow, there are not enough experiments for research at present, and there are many problems that need to be solved urgently. [0004] At present, some scholars at home and abroad have conducted a lot o...

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Problems solved by technology

[0004] At present, some scholars at home and abroad have conducted a lot of research on high total temperature ejectors, but they all use gas generators to generate primary flow. Although this can generate high total temperature and total pressure primary flow, it is limited by the gas generator Working characteristics, the adjustment of its total temperature and total pressure is relatively difficult, and it is not easy to carry out variable parameter research. At the same time, the risk factor of the experiment is greatly increased, and due to the high temperature effect, the experiment time is strictly limited, which has a negative impact on the extraction of experimental data.

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