APPARATUS FOR AXIAL INSERTING OF LANCE THROUGH INLET OPENING INTO HIGH-PRESSURE RESERVOIR Russian patent published in 1998 - IPC

FIELD: lance introducing equipment. SUBSTANCE: apparatus has axial compaction device, casing, first immovable seat, second seat mounted for axial movement and locking member with spacer spring providing axial gap relative to first seat. Connecting springs bias second seat to locking member and bias locking member to first seat. Active opening members, such as lift cylinders, act upon connecting springs. Apparatus may be further provided with another spacer member, which is identical to locking member except for through opening adapted for lance insertion. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 18 cl, 9 dwg