Oil and gas pipeline local buckling experiment device and method
A technology for oil and gas pipelines and buckling experiments, which is used in measurement devices, using stable bending force to test material strength, instruments, etc., can solve problems such as difficult pipeline measurement, lack of supporting data measurement and acquisition devices, and inability to meet local buckling of oil and gas pipelines. , to achieve the effect of ensuring stability and eliminating stress concentration
Inactive Publication Date: 2020-12-01
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
Although the common three-point / four-point material bending device on the market can apply bending moment to the pipeline, it will exert local pressure on the contact part between the pipeline and the indenter while applying the bending moment, and the phenomenon of stress concentration is obvious, making the pipeline in the In the process of bending deformation, it is subjected to shear force, which cannot meet the needs of local buckling research of oil and gas pipelines, and the three-point / four-point material bending device does not have a supporting data measurement and acquisition device, so it is difficult to measure the deformation of the pipeline after local buckling
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[0031] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.
[0032] Such as figure 1 As shown, a local buckling experiment device for oil and gas pipelines provided by the present invention includes a pipeline bending device 100, and the pipeline bending device 100 includes a support frame 10, a rotating member, a transmission chain 9, a first telescopic member, a second telescopic member and a driving system; the two rotating parts are arranged on the support frame 10 to rotate at intervals, and arc-shaped gaps for placing the pipe to be tested are formed on the two rotating parts, so that the contact between the pipe to be tested and the rotating part is surface contact; the two transmission chain parts Corresp...
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The invention discloses an oil and gas pipeline local buckling experiment device and method. The device comprises a pipeline bending device; and the pipeline bending device comprises a supporting frame, rotating pieces, transmission chain pieces, a first telescopic piece, a second telescopic piece and a driving system. The two rotating pieces are arranged on the supporting frame in a spaced and rotating mode, and arc-shaped gaps for containing the end sides of a to-be-detected pipeline are formed in the two rotating pieces. The two transmission chain pieces are correspondingly wound on the tworotating pieces; the transmission chain pieces and the rotating pieces are in transmission fit; the two first free ends of the two transmission chain pieces are connected through the first telescopicpiece, and the two second free ends of the two transmission chain pieces are connected through the second telescopic piece, wherein the first telescopic piece and the second telescopic piece face thesame direction; and the driving system is connected with the first telescopic piece and the second telescopic piece, and is used for driving the first telescopic piece and the second telescopic pieceto synchronously and reversely stretch out and draw back.
Description
technical field [0001] The invention relates to a local buckling experiment device and method of an oil and gas pipeline, belonging to the field of pipeline buckling research devices. Background technique [0002] Oil and gas pipelines are subjected to complex forces during installation and operation, and single or multiple external forces will affect the buckling failure of pipelines. The geographical environment around oil and gas pipelines is complex, and buried oil and gas pipelines on land will inevitably be occupied by ground facilities such as roads, buildings, and accumulations. As the pipelines operate, the occupied pressure will cause uneven settlement of the foundation, that is, land subsidence that often occurs , then a higher bending stress will be generated in the pipeline. In addition, in the case of geological disasters (such as debris flows, landslides, etc.), it will directly cause uneven tension and pressure at different places on buried oil and gas pipel...
Claims
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Login to View More IPC IPC(8): G01N3/20G01N3/02
CPCG01N3/02G01N3/20G01N2203/0023
Inventor 陈严飞马尚董绍华夏通瑾刘昊张宏侯富恒李露露宗优倪恒左蒙
Owner CHINA UNIV OF PETROLEUM (BEIJING)