DETONATION TRANSMISSION UNIT Russian patent published in 2019 - IPC E21B43/117 

FIELD: mining.

SUBSTANCE: invention relates to the drilling and blasting operations in various wells and, in particular, oil or gas wells of various types and can be used in devices for the transmission of detonation of cumulative perforators. Detonation transmission unit contains a frame, an adapter, a detonating cord, a transfer charge, a booster sleeve, a frame sleeve with an annular protrusion, and contacts. Inventive device further comprises a rotary sleeve with the ability to install into the frame sleeve by axial movement to the annular protrusion and turning around its axis and securing the rotary sleeve due to the protrusions on the rotary sleeve in the frame sleeve, the shape of the hole on the frame sleeve repeats the shape of the end of the sleeve; sleeve-latch with the ability to install on the charge transfer and fixation on the cone-shaped protrusions of the rotary sleeve; extension sleeve and insulator sleeve.

EFFECT: claimed invention allows to increase the reliability of the transmission of detonation from the booster (DTU) to the booster (DTU) due to their guaranteed coaxial arrangement during assembly.

8 cl, 6 dwg, 1 tbl