Hydraulic pressure self -locking mechanism of preventer

• Main Authors: FU XINGWANG, DUAN WEIKE
• Format: Patent
• Language: English
• Published: 23.09.2015
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model provides a hydraulic pressure self -locking mechanism of preventer, has realized the preventer and has closed automatic follow -up locking of in -process and locking back automatic unlocking, the technical scheme of adoption is, include flashboard axle and the hydraulic cylinder assembly of setting at flashboard axle end with flashboard assembly fixed connection in the structure of mechanism, the cylinder body of hydraulic cylinder assembly is fixed on the side door, locking dish assembly the flashboard epaxial and with centre cover fixed connection, be equipped with the wedge type locking piece that the piston wedge type was held set subassembly tightly and was had supporting scarf in the middle cover, set subassembly outside is held tightly at the piston wedge type to wedge type locking piece equipartition, and along the flashboard diameter of axle to spacing set up spacing downthehole of sheatheeing in the centre that float, the flashboard axle is lodged the hydraulic oil propelling movement and is had along the axial slip degree of freedom, the piston wedge type is held set subassembly tightly and is had the slip degree of freedom with the help of the hydraulic oil propelling movement and along the flashboard axle, and it is epaxial at the flashboard with the scarf engaging friction location of wedge locking piece. The utility model discloses safe and reliable, automatic locking, automatic unlocking, intensity of labour lightens, and the efficiency is high.