爆破器材2025，Vol.54Issue(1)：41-45,5.DOI:10.3969/j.issn.1001-8352.2025.01.007
延时起爆装置可靠点火技术的研究
Research on Reliable Ignition Technology of the Delay Detonation Device
摘要
Abstract
Delay detonation device is an engineering application of deflagration to detonation transition(DDT).The technical characteristics of the delay detonation device of a certain type of submunition are:the detonating cord completes the detonation and transmits the detonation signal to the ignition chamber of the device.The ignition chamber opens the fire transmission channel under the action of external force,and completes the delay function through the combus-tion of the ignition powder.At the same time,the energy of the ignition powder is transmitted to the explosive through the fire transmission channel,and the explosive achieves the process of DDT under the constraint of the tube shell,outputting stable detonation.In the process of product development,phenomena such as boron/potassium nitrate ignition powder not igniting blunt black-5 explosive and unreliable detonation output occurred.In order to achieve reliable ignition and stable detonation output,based on the characteristics of DDT,the ignition charge structure of boron/potassium nitrate was rede-signed by setting a central hole on the output end face of the ignition charge.When the combustion front of the ignition charge reaches the small hole,the energy generated by combustion can be continuously transferred to the explosive through the open fire transmission channel,reducing the energy escape at the initial stage to increase the initial energy of the explo-sive.This enables the explosive to transition to unstable combustion and achieve weak detonation under the bondage of the metal tube shell.And then,the growth and output of stable detonation are achieved.Through the redesign of the boron/potassium nitrate ignition charge,the action reliability of the delay initiation device of a certain type of submunition has been improved.关键词
燃烧转爆轰/延时起爆装置/点火药室/热对流Key words
deflagration to detonation transition/delay detonation device/ignition chamber/thermal convection分类
化学工程引用本文复制引用
缪迎兵,谢锐,王倩,许建兵,叶迎华..延时起爆装置可靠点火技术的研究[J].爆破器材,2025,54(1):41-45,5.基金项目
国家自然科学基金面上项目(52102107,22275092,52372084) （52102107,22275092,52372084）
中央高校基本科研业务费专项资金(30923010920) （30923010920）
