The screw pump hydraulic anti-reverse technology is a technology for preventing problems such as rod reversal, lever off, polished rod swinging, and ground equipment damage when the conventional screw pump well is stopped at the time of stopping or pumping.

After the screw pump well is shut down, the phenomenon of reversal of the mast often occurs. The torsion potential energy stored inside the mast and the differential pressure of the oil jacket may cause the mast to reverse. Sudden release of anti-torque rod, sucker rod by the elastic potential energy stored in the pole and the impact of the pressure difference between the oil jacket, will generate a huge instantaneous torque, easily lead to the polished rod in the high-speed rotation is shaken or thrown off, the high-speed rotation of the pulley Breaking and flying, causing damage to people and equipment.

The screw pump hydraulic anti-reverse technology is achieved through the screw pump hydraulic anti-reverse device to achieve the release of torque. The screw pump hydraulic anti-reversal device can stop the piston through the hydraulic brake caliper when the spindle reverses after the screw pump is stopped, and pushes the friction disc to clamp the brake disc, so that the system pressure is rapidly reduced. After the brake caliper loses pressure, the spindle spins down and the gear pump continues to work. The brake caliper regenerates the pressure and brakes the brake disc. This way the intermittent clamping - releasing - clamping - is released until Spindle reversal torque is unloaded to zero to eliminate potential safety hazards.

The screw pump hydraulic anti-reversal device can realize the internal setting of a one-way constant pressure unloading mechanism, with large braking torque, stable and reliable braking, good heat dissipation, and automatic torque release without manual unloading of torque. This device is a self-contained device that can be retrofitted on the original drive. The operation is simple and the cost of retrofitting is low.