Cyclic loading device for deep sea pipeline

Abstract

The embodiment of the invention discloses a cyclic loading device for a deep sea pipeline. The cyclic loading device comprises a test cabin, an axial cyclic loading mechanism and a bending moment cyclic loading mechanism; a water injection port, a water outlet and an exhaust port which can be opened or closed are formed in the test cabin; the axial cyclic loading mechanism comprises an axial force transmission rod and a first eccentric structure, wherein one end of the axial force transmission rod extends into the test cabin and extends in the axial direction of the test cabin, and the first eccentric structure is connected to the other end of the axial force transmission rod, located outside the test cabin and used for pushing the axial force transmission rod in the axial direction; and the bending moment cyclic loading mechanism comprises a transmission support which is located in the test cabin and can be sleeved with the to-be-tested pipeline, and a second eccentric structure located outside the test cabin, and the transmission support and the second eccentric structure are connected through a radial transmission rod assembly which is movably arranged in the radial direction. The high-frequency cyclic loading effect can still be effectively achieved in the high-pressure water environment, and the problem of overheating caused by the adoption of a hydraulic device in the prior art is solved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of loading devices for deep-sea pipelines, in particular to a cyclic loading device for deep-sea pipelines. Background technique [0002] With the increasing development of offshore oil and gas resources, a large number of deep-sea pipelines have been laid and put into use. In order to ensure the operation stability and safety of these pipelines and study the buckling and crushing mechanism of pipelines, it is necessary to simulate pipeline compression in deep-sea environments. Scale ratio test. Whether the way of applying load to the pipeline and the type of load conform to the real deep sea environment will directly affect the reliability and accuracy of the test results. At present, most of the test devices that apply load to the test pipeline in the high-pressure water tank control the force through hydraulic presses, and there are limitations in the formation of axial force. Ther...

AI Technical Summary

Problems solved by technology

At present, most of the test devices for applying load to the test pipeline in the high-pressure water tank are controlled by hydraulic presses, and there are limitations in the formation of axial force.

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