1results about How to "Avoid stuck pipe accidents" patented technology

The application belongs to the field of pipeline cutting device, and particularly relates to a double-layer heat insulation pipe cutting device and a cutting method thereof. The application comprises a screw drill connecting part, an oil storage part, an anchoring part, a speed reducer part, a cutting part and a cutter driving reset part connected in sequence. The hydraulic oil in the oil storage part drives the anchor claw of the anchoring part to anchor on the inner wall of the inner pipe under the action of pressure; the speed reducer part drives the blade of the cutting part to rotate under the action of hydraulic oil pressure; at the same time, the cutter driving reset part drives the blade to slowly open along the radial direction under the action of hydraulic oil pressure, and the inner pipe and the outer pipe of the double-layer heat insulation pipe are cut in sequence. The application realizes the sequential operation of anchoring first, rotating second and feeding third through the hydraulic throttling principle, and has stable cutting, high cutting precision and resettable blade. The inner and outer pipe cutting can be completed in one pipe column, and the operation efficiency and safety are greatly improved.