Fuel supercritical combustion test equipment

Abstract

The invention discloses fuel supercritical combustion test equipment. The fuel supercritical combustion test equipment comprises a hydraulic pushing device, a nylon plug, a heavy piston mounting section, a heavy piston, a compression pipe, a compression pipe supporting device, a compression pipe thrust device, a heavy piston retaining device, an experiment cabin, an experiment cabin supporting device, a steel rail and a high-pressure source, wherein the nylon plug and the heavy piston are correspondingly arranged on the left side of the heavy piston mounting section and in a middle pipe; and the lower edge of the heavy piston mounting section is communicated with the high-pressure source below through a ball valve, the right side of the heavy piston mounting section is connected with the compression pipe, the compression pipe is supported by the compression pipe supporting device, the compression pipe thrust device is installed at the one-third position of the compression pipe and located through a thrust ring, and the heavy piston retaining device is connected with an experiment cabin. According to the fuel supercritical combustion test equipment, the retaining efficiency of the heavy piston and the safety in the retaining process are improved, the high stress strain at the moment of contact between the heavy piston and a retaining block is reduced, the service life of the heavy piston and the retaining block is prolonged, and the stability of the temperature and the pressure intensity of the experiment cabin in the test process is improved.

Description

technical field [0001] The invention relates to the technical field of test equipment, in particular to fuel supercritical combustion test equipment. Background technique [0002] Evaporation and combustion are fundamental problems in the working of rocket engines. Combustion characteristics affect the performance of rocket engines. Compared with subcritical conditions, fuel evaporation and combustion rates are greatly improved under supercritical conditions, and liquid fuels exhibit similar characteristics to gaseous fuels. Therefore, there are essential differences between subcritical and supercritical combustion. Generally, there are pressure and temperature conditions in the rocket engine combustion chamber for fuel to undergo supercritical combustion, so supercritical combustion is a typical combustion problem of rocket engines. [0003] Both the shock tube and the heavy piston driver are experimental devices that can generate uniform, high-temperature and high-pressur...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of fuel supercritical combustion test equipment. The structure design of the present invention is ingenious, and it is provided with a heavy piston stop device and an adjustment block for changing the compression ratio, so as to solve the problem of short test time and constant compression ratio of the existing experimental device. It can generate and maintain a high temperature and high pressure environment for a long time, effectively reducing the damage to the experimental equipment caused by the high-speed hard impact of the heavy piston in the equipment, and prolonging the service life of the equipment

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