Testing method for components of combustion gas of gunpowder

Abstract

The invention discloses a testing method for the components of combustion gas of gunpowder. The method can quantitatively test the mass of main gas components in a combustion product of the gunpowder under specific conditions. The method mainly comprises the following steps: 1, treating of a to-be-tested sample and adjusting the initial conditions of an enclosed combustion chamber; 2, igniting the to-be-tested sample and allowing gas produced after combustion to be fully mixed with filling gas; 3, subjecting the obtained gas mixture to pressure reduction and flow velocity adjustment, then allowing the gas mixture to pass through a sensor array, and acquiring related data including the pressure intensity of the combustion chamber, the concentrations of the gas components, flow velocity, etc.; 4, treating exhaust gas after completion of testing; 5, processing testing data and calculating the mass of the components of combustion gas produced by combustion of the to-be-tested sample per unit mass; and 6, characterizing testing results. The method provided by the invention is applicable to testing of the mass of a plurality of gas components like CO, CO2, NO, NO2, HCl and NH3 in the combustion product. The method provides a necessary technical means for research on the combustion mechanism, formula and process design of gunpowder.

Description

technical field [0001] The invention relates to a method for testing the quality of gas components of propellant combustion, which is suitable for testing the quality of gas components generated by the combustion of propellants and propellants at a specific pressure and specific initial temperature. Background technique [0002] The combustion of gunpowder is a complex physical and chemical change process. In the combustion products, not only smoke, but also CO, CO 2 , NO, NO 2 , HCL, NH 3 products of gaseous combustion. Composition detection of gunpowder gas is one of the diagnostic techniques of combustion experiments. It provides the necessary information for further understanding of chemical reaction processes and their complex interactions with fluid mechanics, heat transfer, and other physical phenomena. With the development of high-tech weapons, there is an increasing demand for clean gas generating agents, and the requirements for low characteristic signals of ga...

AI Technical Summary

Problems solved by technology

This method is suitable for the detection and analysis of the concentration of harmful gases at the test site. When studying the combustion mechanism of gunpowder, its shortcomings are: (1) The initial conditions of the test sample combustion are not easy to control

(2) The gas concentration generated by the combustion of the test sample is unstable and susceptible to interference from the environment

When using engines and ballistic guns for testing, the gas generated by the combustion of the test sample diffuses in the air, and its concentration is affected by the diffusion time and air disturbance, and the gas generated by combustion is unstable.

When the test sample is ignited in a closed combustion chamber, the test result of the combustion gas concentration is greatly affected by the purity of the filling gas, and is greatly affected by the initial pressure of the closed combustion chamber

[0004] From the above two points, it can be seen that the existing gas component concentration test method is complicated to prepare in the early stage, and is greatly affected by the test environment and test conditions.

It is not conducive to the mechanism research on the combustion process of gunpowder and the combustion products.

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