HOLDING ELECTRIC SPRING CONNECTIONS FOR WET COMPONENTS JOINING OF DOWNHOLE TOOL Russian patent published in 2019 - IPC H01R13/17 

FIELD: mining.

SUBSTANCE: invention relates to means of electrical connections in downhole conditions. In particular, disclosed is wet connection device (10) for operation in well conditions, comprising: female component (14) defining inner annular wall (30) comprising at least one electrode (34) located on it, electrically connected to the downhole tool connected to female component (14), male component (12) located at least partially in the space defined by said inner annular wall (30), and electrically connected to equipment located above device (10), and annular electric contact (20), establishing continuous electrical connection between male and female components. At that, annular electric contact (20) includes: elastic external element (50) made of a cylindrical spring, which ends are fused with each other, and inner retaining element (52) installed inside resilient outer element (50) and providing radial displacement of resilient outer element (50), wherein inner retaining element (52) is made in the form of a ring for key rings, which determines a coil, passing in direction, which is substantially perpendicular to direction of coil, which defines said cylindrical spring. In this case, male component (12) comprises outer peripheral wall (22) defined by, at least, one conductive ring (24) and at least one electrically insulating ring (26). Said at least one conductive ring (24) and said at least one electrically insulating ring (26) are located at a distance from each other in axial direction. Annular groove (28) is made in said at least one conducting ring (24) and forms a seat in which annular electric contact (20) is retained.

EFFECT: technical result is higher reliability of electrical connection in well conditions.

14 cl, 5 dwg