| The explosive-concussion jet:a new type fire distinguisher |
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| 作者姓名： | 陈德淑 |
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| 作者单位： | College of |
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| 基金项目： | the national Natural Science Foundation of China (No. 59874033). |
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| 摘 要： | ~~When a bulletin is excited, the pressure ofatmosphere in the dynamic cavity is increased greatly and abruptly, which goes up to a range from 300 MPa to 350 MPa . With such a high pressure, the spacing block broke instantly. Therefore, the water in thestorage water chamber erupts abruptly, and the speed of the jet comes to 120 m/s. Of course, the formation of the jet is affected by some factors (such as the size and shape of the dynamic cavity, the gate limitationpressure of the spacing blo…
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The explosive-concussion jet:a new type fire distinguisher |
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| CHEN Deshu,LIAO Zhenfang,ZHANG Jinrong,ZHAO Jianxin College of Mechanical Engineering,Chongqing University,Chongqing,P.R. China.The explosive-concussion jet:a new type fire distinguisher[J].Journal of Chongqing University,2003,2(1). |
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| Authors: | CHEN Deshu LIAO Zhenfang ZHANG Jinrong ZHAO Jianxin College of Mechanical Engineering Chongqing University Chongqing PR China |
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| Institution: | College of Mechanical Engineering, Chongqing University, Chongqing 400044, P.R. China |
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| Abstract: | Based on the fluid transient theory and explosive dynamics, a new type explosive driven jet is put forward. The generator of the proposed jet system comprises an explosive power source, a dynamic cavity, a spacing block, a water storage chamber, and a rubber membrane. The dynamic explosive source of power for the jet is composed of a cartridge and a bullet. The pressure in the dynamic cavity goes up to a range from 300 MPa to 350 MPa very quickly when the bullet is emitted. Driven by such a high pressure, the speed of the jet reaches 120 m/s. The effective distance to distinguish a fire is within 40 m. The jet has the following advantages over a conventional high-pressure water jet system: 1)strong power and strong transient force produced by dynamic source; 2) the energy of the dynamical source concentrated in a small scope with very little loss; 3) extensive applicability; and 4) safe usage without sparkling and smoke. |
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| Keywords: | explosive concussion jet explosively driven jet generator extinguisher |
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