Method for testing flash point of combustible liquid in high-pressure environment

Abstract

The invention discloses a method for testing a flash point of combustible liquid in a high-pressure environment. The method comprises the steps of opening an end cover and taking out a sample cell; adding liquid fuel into the sample cell; putting the sample cell filled with the sample into a tank body and sealing the container; inflating high-pressure gas into the sealed pressure-resistant container to reach the test pressure by using a diaphragm compressor,and then closing; setting a temperature rise program through a temperature controller, and heating the liquid fuel in the sample cell by an electric heating ring; continuously igniting fractions at the upper part of the liquid fuel through a high-voltage electric spark igniter, and recording whether the sample fractions are ignited or not by using a high-speed video recorder; determining the flash point value of the liquid fuel sample under the pressure; and taking out the sample cell after the test, and calculating the reaction amount of the sample. The method can be used for testing the flash point of a substance in a high-pressure environment, and is simple to operate, good in pressure resistance and corrosion resistance, high in precision, high in safety and good in visuality.

Description

technical field [0001] The invention relates to the technical field of liquid fuel flash point testing, in particular to a method for testing the flash point of flammable liquids under high pressure environment. Background technique [0002] The flash point, also known as the ignition point, is the temperature at which a substance is heated to the point where it begins to be flashed by a flame under specified conditions. The flash point of a substance is mainly related to its evaporability; the lighter the distillate, the easier it is to evaporate, and the lower the flash point. The lower the flash point of the substance, the easier it is to be ignited by the flame to cause combustion, and the greater the danger of fire. Therefore, the flash point can be seen as an indicator of fire safety. Whether various liquids are flammable or combustible is grouped according to their flash point. [0003] With the continuous development of aerospace technology and modern transportati...

AI Technical Summary

Problems solved by technology

However, in actual use, volatile liquid fuels are often stored, transported and used in a high-pressure sealed environment. The existing flash point test methods are usually carried out in a normal pressure environment, which cannot simulate the real environment, resulting in inaccurate measured results.

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