An experimental device for imposing initial ellipticity on offshore oil and gas pipelines
A technology for oil and gas pipelines and experimental devices, which is applied in the direction of applying stable tension/pressure to test the strength of materials, and can solve problems such as simple devices, inability to accurately control the ovality of the pipeline, and fixing the spatial position of the pipeline.
Active Publication Date: 2022-05-24
TIANJIN UNIV
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Problems solved by technology
[0004] The current existing device for realizing the initial ellipticity of the pipeline (such as patent application number: CN201020242171.2) has several deficiencies in use: 1. The existing device for applying the initial ellipticity defect is relatively simple, and cannot accurately control the ellipticity of the pipeline. The size of the applied ellipticity
2. There are defects in the design of the device, and it is impossible to observe the position of the specific force point of the pipeline, the change of geometric shape and the state of force response
3. When applying ellipticity to the pipeline, there is no way to effectively fix the spatial position of the pipeline, and the position of the pipeline under force and deformation may change
Method used
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[0030] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0031] In order to facilitate the understanding of the embodiments of the present invention, further explanation will be given below with specific embodiments in conjunction with the accompanying drawings, and the embodiments do not constitute limitations to the embodiments of the present invention.
[0032] like figure 1 As shown ...
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The embodiment of the present invention relates to an experimental device for applying initial ellipticity to an offshore oil and gas pipeline. The component runs through the bulkhead of the main body ballast tank, the hydraulic pump is connected to the hydraulic oil pipe, the hydraulic oil pipe is connected to the pressure head assembly, and the cabin bracket is arranged on the lower surface of the main body ballast tank to support the main body ballast tank; the pressure part of the pressure pipe Entering the ballast tank of the main body and located between the pressure head components, the two ends of the pressure pipe run through the flange, and the flange is fixed on the ballast tank of the main body. It can accurately apply pressure to a certain position of the pipeline and control the size, and simulate the experimental method of the initial ellipticity defect of the pipeline under the action of external force in the process of production, transportation and laying, in order to study the ultimate bearing capacity of the initial ovality pipe fittings and dynamic response, and provide guidance for the laying and inspection of offshore oil and gas pipelines.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of marine engineering, and in particular, to an experimental device for applying initial ovality to an offshore oil and gas pipeline. Background technique [0002] Offshore oil and gas pipelines are the most efficient, economical and effective transportation method in offshore oil and gas transportation. They are the lifeblood of offshore oil and gas transportation. As offshore oil and gas development continues to advance to deep water, the working conditions it faces are more complicated, ensuring its normal service is more and more affected. Pay attention to. However, its stress state during production, transportation and laying is extremely complex, and various initial defects will inevitably occur during the laying and service of offshore oil and gas pipelines. Among them, the initial ovality defect is the most common initial defect. Once the offshore oil and gas pipeline exist...
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IPC IPC(8): G01N3/12
CPCG01N3/12
Inventor 余杨刘泽生胡少谦韩梦雪余建星许伟澎张春迎颜铠阳
Owner TIANJIN UNIV