System and method for testing effect of falling objects in high-pressure water environment on submarine pipeline
A technology for submarine pipelines and test systems, which is applied in the direction of applying stable tension/pressure to test the strength of materials, instruments, measuring devices, etc., can solve the problems such as the inability to simulate complex working conditions of submarine pipelines, and is conducive to mechanical analysis and protection design. Effect
Pending Publication Date: 2021-11-23
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology
Although this patent can simulate the deep-sea environment, it can only apply loads to the pipeline model, and its vibration loading device can only simulate the lateral and vertical impact of falling objects on the pipeline, and cannot simulate the complex engineering of submarine pipelines caused by falling objects such as friction, scraping and three-dimensional impact. condition
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[0032] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0033] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as...
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The invention relates to the technical field of deep sea pipeline tests, and discloses a system for testing effect of falling objects in high-pressure water environment on a submarine pipeline. The system comprises a pressure cabin, a left loading device, a right loading device, a left transmission device, a right transmission device and a lateral loading device, wherein the left loading device and the left transmission device are connected to the left end of the pressure cabin, the right loading device and the right transmission device are connected to the right end of the pressure cabin, the left loading device and the right loading device can apply axial tension / pressure to a test piece and can drive the test piece to move left and right, the left transmission device and the right transmission device can apply bending moment / torque load to the test piece and can drive the test piece to rotate, the lateral loading device can be in contact with the test piece, and through cooperation of the left loading device, the right loading device, the left transmission device, the right transmission device and the lateral loading device, the complex working conditions of three-dimensional impact, friction scraping and other falling objects acting on the pipeline can be simulated. The invention further provides a method for testing the effect of the falling objects in the high-pressure water environment on the submarine pipeline.
Description
technical field [0001] The invention relates to the technical field of deep-sea pipeline testing, in particular to a testing system and method for a submarine pipeline under a high-pressure water environment on the action of falling objects. Background technique [0002] The interference of underwater falling objects is one of the main causes of submarine pipeline accidents, and the common ones are the impact and scraping of anchors. The action of falling objects in deep water is a structural response process under external water pressure combined with falling object impact, collision, friction and other loads. Submarine pipelines not only suffer from local deformation and damage, but are also more likely to experience serious buckling instability under the action of external water pressure. as a result of. In addition, the loads on submarine pipelines are complex, and there are often prestressed conditions, which have an important impact on the mechanical behavior of subma...
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IPC IPC(8): G01N3/10G01N3/12G01N3/303G01N3/06
CPCG01N3/10G01N3/12G01N3/303G01N3/068G01N2203/0019G01N2203/0032G01N2203/0274G01N2203/0641
Inventor张秀林余杨李振眠尤学刚赵明仁余建星张西亮
OwnerCHINA NAT OFFSHORE OIL CORP