US 12,436,060 B2
Testing device for simulating frictional wear behaviors of threaded joint of drill pipe under turbid seafloor environment
Yongping Jin, Xiangtan (CN); Chang Wu, Xiangtan (CN); and Deshun Liu, Xiangtan (CN)
Assigned to HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, Xiangtan (CN)
Filed by HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, Xiangtan (CN)
Filed on May 9, 2023, as Appl. No. 18/314,660.
Claims priority of application No. 202310041501.3 (CN), filed on Jan. 13, 2023.
Prior Publication US 2023/0273089 A1, Aug. 31, 2023
Int. Cl. G01M 5/00 (2006.01)
CPC G01M 5/0033 (2013.01) [G01M 5/0025 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A testing device for simulating frictional wear behaviors of a threaded joint of a drill pipe under turbid seafloor environment, comprising:
a support;
an oil cylinder;
a displacement sensor;
a rotating speed sensor;
a torque sensor;
a torque limiter;
an upper specimen;
a lower specimen;
a first motor;
a plurality of second motors;
a plurality of stirring rods;
a turbidity sensor;
a test tank;
a control device; and
a base;
wherein the oil cylinder and the test tank are arranged on the support, and the oil cylinder is located directly above the test tank; a piston rod of the oil cylinder is connected to the first motor; an axis of the oil cylinder is parallel to an axis of an output shaft of the first motor; the displacement sensor is arranged on a bottom surface of the oil cylinder; the rotating speed sensor is arranged on a bottom surface of the first motor, and is configured to face toward the output shaft of the first motor; the output shaft of the first motor is connected to an upper end of the torque limiter; a lower end of the torque limiter is connected to an upper end of the upper specimen; a lower end of the upper specimen is threadedly connected with an upper end of the lower specimen under loading of a main shaft of the first motor; the lower specimen is arranged on the base; the base is arranged on the torque sensor; the torque sensor is fixedly provided on a bottom of the test tank; the turbidity sensor is arranged in seawater in the test tank; the plurality of stirring rods are provided at two sides of the test tank; the plurality of stirring rods and the plurality of second motors are connected in one-to-one correspondence; and the control device is connected to the displacement sensor, the rotating speed sensor, the turbidity sensor, the torque sensor, the first motor, and the plurality of second motors.