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Geometric stiffness test device of deep water top tension type vertical pipe

A technique of geometric stiffness, test rig, applied in the direction of testing the strength of materials by applying stable tension/compression, etc.

Inactive Publication Date: 2011-11-23
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0015] The purpose of the present invention is to provide a test device for the geometric stiffness of the deep-water top-tensioned riser, thereby solving the problem of reasonable calculation of the geometric stiffness of the deep-water top-tensioned riser

Method used

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  • Geometric stiffness test device of deep water top tension type vertical pipe
  • Geometric stiffness test device of deep water top tension type vertical pipe
  • Geometric stiffness test device of deep water top tension type vertical pipe

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 As shown, the geometric stiffness test device of the deep water top tension riser includes a model pipeline 1 arranged on a fixed frame 13, a water cylinder 2 is arranged outside the model pipeline 1, and the upper and lower ends of the model pipeline 1 communicate with the water supply pipeline system. The water supply pipeline system includes an inlet pipeline 14 communicating with the upper end of the model pipeline 1 and an outlet pipeline 15 communicating with the lower end of the model pipeline 1 , and a bypass pipeline 16 is provided between the inlet pipeline 14 and the outlet pipeline 15 . The upper end of the model pipeline 1 is connected to the outlet of the water pump 18 through the inlet pipeline 14, a pressure gauge 29 is provided on the inlet pipeline 14, and the end of the outlet pipeline 15 is connecte...

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Abstract

The invention relates to a research test device of an ocean deep water vertical pipe, in particular to a geometric stiffness test device of a deep water top tension type vertical pipe. In the device, a model pipeline is arranged on a fixed frame; a water barrel is arranged out of the model pipeline; the upper end and the lower end of the model pipeline are communicated with a water supply pipeline system; a reaction frame is arranged on the lower part of the fixed frame and is connected with a chuck arranged on the lower part of the model pipeline through a spring; a spring tensometer is arranged on the spring; and a strain foil for measuring wall tension and vibration response of the model pipeline is adhered to the model pipeline. The device can finish test research on the geometric stiffness of the deep water top tension type vertical pipe and provides basis and test verification for calculating the geometric stiffness of the deep water top tension type vertical pipe.

Description

technical field [0001] The invention relates to a research and test device for marine deep-water risers, in particular to a geometric stiffness test device for deep-water top-tensioned risers. Background technique [0002] Deepwater top tension riser is a main type of deepwater marine riser. The lower end of the riser is connected to the wellhead on the seabed. The tension of the pipe wall directly acts on the wellhead, and the fluid in the pipe continuously flows from the seabed through the riser to the floating platform. . The bending stiffness of the top-tensioned riser in deep water includes the elastic bending stiffness and the geometric stiffness caused by tension, where the geometric stiffness is calculated based on the complex bending theory of the beam. The complex bending theory of the beam is based on the analysis of the mechanical model of the solid beam, and its tension is completely borne by the cross-section fibers of the beam. However, the riser is hollow a...

Claims

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Application Information

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IPC IPC(8): G01N3/08
Inventor 黄维平杨超凡李倩顾恩凯范杰利吴学敏周阳魏东泽
Owner OCEAN UNIV OF CHINA
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