HERMETIC IMPACT DETONATOR FOR REGISTERING AND SHOOTING EQUIPMENT Russian patent published in 2017 - IPC F42C19/00 F42C19/10 F42D1/04 

FIELD: blasting.

SUBSTANCE: hermetic impact detonator for registering and shooting equipment contains a striking pin, a cylindrical body, a through axial channel filled with the main charge of blasting explosive of low density. The through axial channel is made three-staged and contains the first part of a small diameter and the second part of a large diameter connected by a conical section. The through axial channel from both sides is covered with a sticky metalized tape; at one end of the housing it is fixed on the thread and fixed with a heat-resistant glue bushing, which has a cylindrical socket with a through hole, closed with a screw cap and fixed with a heat-resistant adhesive. In the socket a striking pin is installed, and a part of the cavity between the striking pin and socket end is filled with the starting charge of the blasting explosive, from the other housing end the second cover is installed on the thread and is fixed with heat-resistant glue, contacting with the sticky metalized tape. The first part of the channel of relatively small diameter has a rough surface with an unevenness height of 160 to 500 mcm. The first part of the small diameter channel may have a rough surface in the form of a thread. The ratio of cross-sectional areas of the second large diameter part and the first small diameter part can be made in the range of 2 to 4. In the starting charge of the blasting explosive, from 25% to 40% of the sensitizer can be introduced. As a sensitizer, quartz sand can be used. As a sensitizer, pounded glass can be used.

EFFECT: invention allows to ensure absolute tightness of the cavities of the detonator under any operating conditions.

6 cl, 12 dwg, 2 tbl