Explosive stability nitrous oxides concentration detection device

Abstract

The invention discloses a concentration detection device of invariable nitrogen oxides in an explosive, which comprises a gas acquisition and transmission device, a nitrogen oxide gas detector, and a data acquisition and processing system. A reaction test tube which is filled with explosive test samples or test paper is heated by a heating furnace of constant temperature for a period of time, andthen extracted from the furnace; under the control of a solenoid valve and a flowmeter, the driving function of carrier gas is used for transmitting the nitrogen oxide gas decomposed in the reaction test tube completely to the nitrogen oxide gas detector at a certain velocity of flow; the data acquisition and processing system is used for collecting and analyzing the detection data acquired by the nitrogen oxide gas detector to ultimately determine whether the invariability of the explosive test sample is qualified. The detection device can not only be used in the detection of the invariability of the explosive test sample, but also can be used in the approval test of the special test paper. At the same time, the detection device can be singly used for collecting the decomposed gas of theexplosive. The detection device has the outstanding advantages of low labor intensity, and objective and accurate measurement results.

Description

technical field The invention belongs to the field of performance testing of explosives, and mainly relates to a stability detection device for explosives, in particular to a detection device for determining whether the stability is qualified by testing the concentration of nitrogen oxides decomposed in a test sample of explosives. Background technique Most of the existing propellant and explosive stability testing methods are qualitative or semi-quantitative test paper discoloration method, and the test content is mainly to judge the stability of propellant and explosive according to the discoloration time of test paper under certain conditions. Such as the Abel test, methyl violet test and Vieri test methods in the national military standard. The traditional test paper discoloration method is mainly to put the quantitative propellant sample and special test paper into a special test tube and seal it with a rubber stopper, heat and decompose it in a constant temperature bat...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that since the gas products produced by decomposition are extracted at any time, the chemical reaction balance of thermal decomposition of explosives will be destroyed, and the decomposition reaction will be accelerated or slowed down, making it difficult to accurately represent the gaseous products produced by reaction decomposition in a closed state. NOx Concentration Value

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