Propellant combustion tail gas quantitatively measuring device

Abstract

The invention discloses a quantitative measurement device of components of propellant powder burning tail gas, the device is characterized in that one end of a transmitting tube is connected with an electric ignition cable switch with an ignition groove; the big end of a piston is matched with the inner wall of the transmitting tube in a sliding way, while the small end of the piston is connected with a pawl arrester; an automatic control heating device and a pressure regulation device are adopted to ensure high constant temperature and stable air pressure of an air test chamber; an air outlet of the transmitting tube and an air inlet of the air test chamber are connected. When a measured propellant powder sample arranged on the ignition groove is burned, the burned gas of the propellant powder pushes the piston to move until the big end of the piston slides over the air outlet, the burned gas can enter the air test chamber; the above process truly simulates the whole process that a pill flies off a bouche from the ignition, when the piston moves to the position of maximum working stroke of the burned gas and then is locked. The burned gas entering the air test chamber is directly detected by a probe of a related sensor in real time; at last, each sensor gets the corresponding quantitative data of the components of the propellant powder burning tail gas. The quantitative measurement device has the advantages of accurate test result as well as good repeatability.

Description

technical field [0001] The invention belongs to the technical field of propellants and explosives, and mainly relates to a propellant performance testing device, in particular to a measuring device capable of evaluating the combustion tail gas of insensitive propellants used for guns, so as to evaluate the use safety of various types of propellants for guns provide data. Background technique [0002] The application of more and more insensitive propellants has disadvantages such as large muzzle smoke, a large amount of residue in the barrel, and a large amount of exhaust gas. This is a clean combustion problem that cannot be avoided in the development of new propellants. For this reason, is it possible to accurately test the launch The exhaust gas characteristics of propellant combustion are particularly important for in-depth research on new propellant propellants. Exhaust gas characteristics are usually characterized by its components and their content. At present, the t...

AI Technical Summary

Problems solved by technology

Since the airtight explosive device is mainly used to study the relationship between pressure and time of different types of propellants under certain conditions, the following problems will be caused when it is used to produce the combustion exhaust of gunpowder: First, in the airtight explosive device The tail gas generation process of the propellant sample combustion is in a constant volume state, while the gunpowder is in a variable volume state due to the movement of the projectile in the barrel when the gun is fired. The gunpowder burns in the above two different states, and the resulting The components of the exhaust gas are not exactly the same, therefore, the exhaust gas produced by the combustion of the gunpowder in the closed explosive device cannot fully characterize the characteristics of the exhaust gas produced by the combustion of the gunpowder during the firing of the gun

Second, when the gas collection bag is used to collect the high-temperature and high-pressure gas produced by the closed explosive device, the moisture in the gas will condense due to the sudden change of temperature and pressure, and the gas easily soluble in water such as ammonia (NH 3 ), nitrogen oxides (NO x ), hydrogen chloride (HCl) and other dissolved, which seriously interfere with the test of tail gas components

Third, due to the inability to accurately control and quantify the artificial sampling process and analysis timing, the repeatability of the experimental data is very poor, which cannot meet the requirements for quantitative analysis of gas components

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