Laser-triggered delay-action detonator |
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| 申请号 | JP16625691 | 申请日 | 1991-06-12 | 公开(公告)号 | JPH04366399A | 公开(公告)日 | 1992-12-18 |
| 申请人 | Kajima Corp; Nippon Oil & Fats Co Ltd; | 发明人 | NAKANO MASASHI; IKEGAMI TAKASHI; EBIYA YASUHARU; TAKANO MIKIO; MIYAJIMA TOSHIKAZU; SATO TOSHIBUMI; | ||||
| 摘要 | PURPOSE: To obtain a captioned detonator to be effectively triggered even by low energy by sequentially laminating a transfer gunpowder layer, a time extension gunpowder layer, an upper trigger layer, and a lower trigger layer in a tubular vessel, and transmitting a laser light by an optical fiber. CONSTITUTION: An optical fiber 18 is introduced to a tubular vessel 10 in which its upper opening is closed by a cock 16, through the cock 16. An inner tube 22 having a restriction wall 20 extended in a funnel shape toward upward, is provided longitudinally in the vessel 10. A transfer gunpowder layer 30, a delay-action gunpowder layer 32, an upper trigger layer 34, and a lower trigger layer 36 are sequentially charged in the vessel 10 from above. Here, black transfer gunpowder having 5:5-9:1 of mixture ratio of oxidizer to reducing agent is charged in the layer 30 opposed at an interval of 4-8mm to the fiber 18. Multilayer trigger layers in which charging specific weights are sequentially increased, are provided to the lower end the wall 20 on the layer 34, and high performance gunpowder of sound type class is charged therein together with the layer 36 in which charging specific weight is enhanced more. COPYRIGHT: (C)1992,JPO&Japio |
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