Experiment device for testing dynamic behaviors of pipe string in deep water

The invention relates to an experiment device for testing dynamic behaviors of a pipe string in deep water. The device comprises a nitrogen cylinder, a nitrogen pressure reducing valve, a flow meter,a connection pipeline, a micro-pressure sensor, laser velocity measurement sensors, flexible joints, a water insulation pipe string, an acoustic Doppler flow velocity profiler, strain rosettes, a datacollection cable, a display, an ocean wave and current co-creating experiment flume, a pipe string holder, a test pipe string and a mechanical flow meter. The nitrogen cylinder generates high pressure airflow. Pressure of the high pressure airflow is reduced to required pressure through utilization of the nitrogen pressure reducing valve. The strain rosettes collect data that the high pressure airflow results in deformation of the test pipe string. The laser velocity measurement sensor collects integrated deformation of the pipe string. The micro-pressure sensor collects stress in an axial direction of the pipe string