Abstract: An intelligent maintenance and repair robot for small diameter and small flow oil and gas pipelines, including a frame, a speed control mechanism, a braking mechanism, an anchoring mechanism, and a sealing mechanism; the speed control mechanism is composed of a motor, rotor, etc; the braking mechanism is composed of a braking rubber cylinder and a first extrusion ring; the anchoring mechanism is composed of a rubber conical cylinder, slips, etc; and the sealing mechanism is composed of a sealing rubber cylinder and a second extrusion ring. The second extrusion ring is driven by a hydraulic rod to press the sealing rubber cylinder, causing it to expand and block the pipe wall to achieve sealing. The intelligent maintenance and repair robot inside the pipeline has the characteristics of good speed control response, wide speed range, strong ability to pass bends, stable braking process, and high sealing reliability.

Abstract: The invention discloses an intelligent plugging robot and method thereof for rerouting, maintaining and repairing long-distance pipelines. The intelligent plugging robot includes a through-flow governor, a flow-blocking mechanism and a telescopic mechanism, wherein the through-flow governor and the flow-blocking mechanism are symmetrically distributed on both sides of the device. The invention can realize remote, fast, safe and accurate plugging during maintaining and repairing the long-distance pipeline, wherein the telescopic mechanism cooperates with the flow-blocking mechanism to move autonomously in the pipe to achieve precise positioning, the through-flow governor can not only adjust the plugging robot but also ensure the cleaning of the pipe wall, make it stable contact with the signal transceiver, and realize the stable communication between the robot in the pipe and the remote monitoring machine.

Abstract: The invention discloses an intelligent plugging robot and method thereof for rerouting, maintaining and repairing long-distance pipelines. The intelligent plugging robot includes a through-flow governor, a flow-blocking mechanism and a telescopic mechanism, wherein the through-flow governor and the flow-blocking mechanism are symmetrically distributed on both sides of the device. The invention can realize remote, fast, safe and accurate plugging during maintaining and repairing the long-distance pipeline, wherein the telescopic mechanism cooperates with the flow-blocking mechanism to move autonomously in the pipe to achieve precise positioning, the through-flow governor can not only adjust the plugging robot but also ensure the cleaning of the pipe wall, make it stable contact with the signal transceiver, and realize the stable communication between the robot in the pipe and the remote monitoring machine.