The three gate hydraulic blowout preventer consists of a hydraulic system and a blowout preventer. Its advantages are reflected in the fact that the blowout preventer itself is forged into a rectangular shape from cast steel, with a blowout preventer joint placed on top, a sealed grease chamber below the blowout preventer, and a hydraulic cable sealer with piston matching, a hydraulic cable cutter with piston symmetry, and a hydraulic cable lock with piston symmetry are sequentially arranged downwards; The lower end of the body is equipped with a flange that is cross connected to the oil pipe
The upper part of the joint of the spray box is equipped with a spray box, cable sealer, cable cutter, and cable locker connected to the body through flange bolts. The flanges connected to each other are equipped with inlet and outlet ports connected to the corresponding hydraulic cylinder in the body. The inlet of the hydraulic cylinder is connected to the hydraulic pipeline of the hydraulic system; This type of blowout preventer ensures the safety of perforation operations and prevents the occurrence of blowout accidents The upper part of the nozzle joint is equipped with a threaded nozzle, and the upper part of the nozzle is equipped with a packing cover and a threaded packing cover; The cable sealer, cable cutter, and cable locker are connected to the body through flange bolts, and the flanges they are connected to have inlet and outlet ports that are connected to the corresponding hydraulic cylinders set in themselves. The inlet of the hydraulic cylinder is connected to the hydraulic pipeline of the hydraulic system; The sealed grease chamber is equipped with a grease injection port connected to the grease injection working cylinder, and a one-way valve is installed at the connection of the grease injection port