US 11,788,664 B1
Intelligent maintenance and repair robot for small diameter and small flow oil and gas pipelines and method thereof
Yang Tang, Chengdu (CN); Wudi Zhang, Chengdu (CN); Shouhong Ji, Hangzhou (CN); Jinzhong Wang, Tangshan (CN); Mingbo Wang, Chengdu (CN); Chenglin Wang, Shanghai (CN); Qiang Wang, Chengdu (CN); Guorong Wang, Chengdu (CN); Li Gu, Chengdu (CN); Wei Zhang, Korla (CN); and Junkai Zhu, Korla (CN)
Assigned to Southwest Petroleum University, Chengdu (CN)
Filed by Southwest Petroleum University, Chengdu (CN)
Filed on May 25, 2023, as Appl. No. 18/323,989.
Claims priority of application No. 202210927144.6 (CN), filed on Aug. 3, 2022.
Int. Cl. F16L 55/18 (2006.01); F16L 55/32 (2006.01); F16L 55/44 (2006.01); F16L 101/60 (2006.01)
CPC F16L 55/32 (2013.01) [F16L 55/44 (2013.01); F16L 2101/60 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An intelligent maintenance and repair robot for small diameter and small flow oil and gas pipelines, comprising a frame, a speed control mechanism, a braking mechanism, an anchoring mechanism, and a sealing mechanism, wherein a front end of the frame is provided with first bolt connection holes distributed in a circumferential direction, a middle section of the frame is provided with a first protrusion plate, a second protrusion plate, and second installation grooves distributed in a circumferential direction, and a rear end of the frame is provided with second bolt connection holes distributed in a circumferential direction and first installation grooves distributed in a circumferential direction; the speed control mechanism and a discharge plate disc are connected to the first bolt connection holes at the front end of the frame through bolts, a hydraulic cylinder barrel, an engine compartment, and an engine compartment cover are installed on the discharge plate disc through screws, and the hydraulic cylinder barrel and a hydraulic cylinder cover are connected by screws; a communication module and a control module are arranged in front of the first protrusion plate of the frame, the sealing mechanism is arranged behind the first protrusion plate of the frame, the braking mechanism is arranged behind the second protrusion plate of the frame, a first rubber cup is arranged behind the second bolt connection holes of the frame, and the anchoring mechanism and the first rubber cup are connected to the second bolt connection holes at the rear end of the frame through bolts;
wherein the speed control mechanism is composed of a first discharge plate, a second rubber cup, a motor, the engine compartment, the engine compartment cover, a rotor, and a bearing; the first discharge plate and the second rubber cup are connected through bolts, the engine compartment and the engine compartment cover are connected through screws, the motor and the rotor are connected through keys, and the bearing is arranged in a bearing installation hole in a middle of the first discharge plate; a interference fit is used between an outer ring of the bearing and the bearing installation hole, and also used between an inner ring of the bearing and a rotating shaft of the motor;
the braking mechanism is composed of a braking rubber cylinder and a first extrusion ring, and the first extrusion ring is installed on the first installation groove of the frame and fixed on the hydraulic rod through nuts;
the anchoring mechanism is composed of a rubber conical cylinder, slips, slip rods, a slip base, and a connection block; the rubber conical cylinder is arranged on the connection block, and the slips are arranged on the rubber conical cylinder; the slips, the slip rods, and the slip base are connected through cylindrical pins, and fifth bolt connection holes of the slip base and fourth bolt connection holes at a front end of a connection frame of a second extrusion ring are connected through bolts; and
the sealing mechanism is composed of a sealing rubber cylinder and the second extrusion ring, and the second extrusion ring is installed on the second installation groove of the frame and fixed on the hydraulic rod through nuts.