Abstract

A CCDS2000 detonator for acetylene, ethylene, propylene, and a multicomponent methylacetylene–allene fraction (MAF) fuel is used to perform experiments on measuring the detonation velocity and recording a detonation front cell in a tube 26 mm in diameter and 2 m in length. The experiments are carried out at atmospheric pressure in stoichiometric mixtures diluted by nitrogen to air concentrations and in air–fuel mixtures with a varying fuel content in them. In the case where the explosive mixture components are fed as a flow by stratifying an explosive charge in an initiation zone, a self-sustaining detonation is stably ignited up to limiting (spin) modes. The concentration limits of the detonation existence are determined. In the air–fuel mixtures of acetylene and ethylene, as the values become lower than the limits, there is multiheaded detonation. For propylene and MAF, a tube diameter of 26 mm is near-critical: only single- and two-headed spin is observed in the entire range of existence. Calculation results are in good agreement with the experiment.

中文翻译：

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通过将气体成分注入脉冲气体爆震装置的枪管中而产生的混合物的爆震参数

摘要

CCDS2000雷管用于乙炔，乙烯，丙烯和多组分甲基乙炔-丙二烯馏分（MAF）燃料，用于进行测量爆炸速度并在直径26 mm，长度2 m的管中记录爆炸前室的实验。实验是在大气压下，在被氮气稀释成空气浓度的化学计量混合物以及其中燃料含量变化的空气-燃料混合物中进行的。在通过在起爆区中分层炸药而将炸药混合物成分作为流动进料的情况下，自持式起爆会稳定地点燃，直至达到极限（旋转）模式。确定爆炸存在的浓度极限。在乙炔和乙烯的空气燃料混合物中，当这些值变得低于限值时，有多头爆炸。对于丙烯和MAF，直径为26 mm的管子接近临界值：在整个存在范围内仅观察到单头和双头旋转。计算结果与实验吻合良好。