Experimental device for evaporating and igniting droplets under high-temperature high-pressure environment and use method thereof

Abstract

The invention discloses an experimental device for evaporating and igniting droplets under the high-temperature high-pressure environment and a use method thereof. The experimental device comprises a sealed pressure container, a high-temperature combustion chamber and an ignition device, wherein the sealed pressure container is enclosed by an upper sealing cover, a lower sealing cover and side plates; the high-temperature combustion chamber comprises a heating layer, and the bottom of the high-temperature combustion chamber is provided with a lifting control guide rail for driving the high-temperature combustion chamber to lift and fall. When in use, the experimental device is divided into two spaces by the high-temperature combustion chamber, i.e., a normal-temperature and high-pressure space in the sealed pressure container with larger space and a high-temperature high-pressure space in the high-temperature combustion chamber with smaller internal space, so that the heating space is small, the heating is fast, the efficiency is high and the electric energy needed by heating is saved. The device is also provided with the ignition device, so that not only be the droplet evaporation experiment can conducted, but also the droplet ignition combustion experiment can be conducted. Further the automatic lifting and falling of the combustion chamber are realized by utilizing the lifting control guide rail, droplets are in the high-temperature high-pressure environment timely and fast, the difficulties that the droplets are evaporated under the high-temperature and high-pressure environment and are volatilized in advance when in ignition experiment are solved and the experimental accuracy is high.

Description

technical field [0001] The invention relates to a liquid droplet evaporation experimental device and a using method thereof, in particular to a liquid droplet evaporation ignition experimental device under a high temperature and high pressure environment and a using method thereof. Background technique [0002] The droplet evaporation ignition experimental device is generally used in research fields such as liquid rocket engines, internal combustion engines, gas turbines, boilers, and jet technology. [0003] The liquid rocket engine is a tool that converts the chemical energy of the liquid propellant carried by the aircraft (missile, rocket or spacecraft) into kinetic energy and provides the aircraft with the power required for flight. It has had a major impact on the development of human society. The performance, stability and compatibility of the engine have always been the central problems to be solved in its development, which are closely related to the spray combustion...

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Problems solved by technology

If the droplet is directly suspended at high temperature according to the traditional method, the volatility of the droplet will inevitably affect the experimental effect and even fail to obtain meaningful experimental data. At present, there are relatively few experimental studies on the evaporation and ignition of droplets under high temperature and high pressure environments at home and abroad. So far, there have been no relevant reports in the literature published at home and abroad involving the effective implementation of liquid droplet evaporation and ignition experiments under high temperature and high pressure environments. The existing similar experiments generally only consider the evaporation process of propellant droplets, and there are droplets directly entering Problems such as early volatilization in high temperature and high pressure environment, although some results have been obtained, but there is still a big gap compared with the actual engine combustion conditions

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