INTER-SECTION UNIT FOR RECEIPT-TRANSMISSION OF HOLLOW-CARRIER JET-GUN DETONATION Russian patent published in 2010 - IPC E21B43/117 

FIELD: machine building.

SUBSTANCE: inter-section unit for receipt-transmission of hollow-carrier jet-gun detonation consists of coupling units of jet-gun sections, and of detonation line made as charges of explosive substance for receipt and transmission of detonation divided with metal bridge of membrane. The membrane corresponds to a conic bushing in a lower part of which - an overturned metal cartridge - there is placed a charge of explosive substance for receipt-transmission of detonation; the charge adjoins the first section of a detonating cord of an underlying section of the jet-gun. Conic surfaces of the membrane and inter-section adapter are inter-conjugated ensuring alignment of these parts. In an upper bushing there is secured the charge of explosive substance for transmission of detonation; it adjoins the second section of the detonating cord of the overlying section of the jet-gun; additionally, the upper bushing tightly adjoins the conic part of the cylinder cartridge of the membrane. The charge of explosive substance for transmission of detonation is set at a distance from upper surface of the membrane bridge forming a minimum air gap.

EFFECT: raised actuation reliability of device for transmission of detonation.

1 dwg