申请人:ICI AMERICAS INC.
公开号:EP0122012A2
公开(公告)日:1984-10-17
An impact sensitive detonator, particularly suitable for the initiation of explosive charges in oil wells, comprises a cylindrical casing (10,110) closed at one end and open at the other end, the closed end having a thin striking surface (22,122) which deforms without rupture when struck by a rounded firing pin (60). The casing contains a primary explosive charge (50) preferably lead azide, adjacent to the closed end, a mass of finely divided refractory material (52), for example silicon carbide adjacent to the primary expolsive charge and an impact member (40, 140), extending transversely across the casing and forming with the casing a confined space for the primary explosive charge and the refractory material. The refractory material and the impact member aid the initiation of the primary explosive charge. Optionally a second charge of primary explosive may be placed on the output side of the impact member. Preferred forms of the detonator contain an output charge (56) of high explosive, for example, hexanitrostilbene between the impact member and the open end of the casing.
冲击敏感雷管特别适用于在油井中引爆炸药,它包括一个一端封闭、另一端开口的圆柱形套管(10,110),封闭端有一个薄的打击面(22,122),当被一个圆形撞针(60)撞击时,该打击面会变形而不会破裂。在封闭端附近,套管内装有原爆装药(50),最好是叠氮化铅;在原爆装药附近,装有大量细小的耐火材料(52),例如碳化硅;还有一个冲击部件(40,140),横向延伸穿过套管,与套管一起形成原爆装药和耐火材料的密闭空间。耐火材料和冲击部件有助于原爆装药的起爆。可选择在冲击部件的输出侧放置第二装药。最好的雷管形式是在冲击部件和套管开口端之间装有一个高爆炸药(56),例如己烷二苯乙烯。