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Multifunctional loading pipeline overall buckling experiment system

A buckling experiment and multi-functional technology, applied in the field of structural engineering, can solve problems such as single loading function and lack of systematic research on the overall buckling characteristics of pipelines

Inactive Publication Date: 2015-01-28
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, deep-sea oil pipelines are mostly multi-layer composite pipelines, such as pipe-in-pipe, bundled pipelines, etc. The overall buckling characteristics of these pipelines lack systematic research, and they are often analyzed as equivalent to single-layer pipelines, which is obviously unrealistic
[0003] The existing subsea pipeline overall buckling test device has a single loading function, such as a mechanical loading method, and can only use certain types of pipelines, such as single-layer pipelines

Method used

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  • Multifunctional loading pipeline overall buckling experiment system
  • Multifunctional loading pipeline overall buckling experiment system
  • Multifunctional loading pipeline overall buckling experiment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0036] Ordinary mechanical loading method. If the ordinary mechanical loading method is used, the liquid circulation device 5 and the temperature and pressure control device 6 are not required to participate in the test. Such as Figure 1-2 As shown, the general mechanically loaded pipe overall buckling simulation test device proposed in the patent embodiment of the present invention includes a self-balancing reaction frame 1, a mechanical loading device 2, a multifunctional loading block 3, a pipe guide block 4, a pipe 7, and a lateral Constraint 8, export fixed block 9, etc. First, the base 2 a , the slidable base 3 a , the guide block base 4 a and the base 9 a are fixed by the slider 10 and the fastening bolt 11 . The long screw rod 2c of the mechanical loading device 2 passes through the nut 2b and is connected to the long screw rod interface 3e of the loading block 3b. One end of pipeline 7 passes through pipeline guide block 4 and connects loading block 3b (as image...

Embodiment approach 2

[0046] Temperature and pressure loading methods. Such as Figure 1-2 As shown, the overall buckling simulation test device of the pipeline under temperature and pressure loading proposed by the patent embodiment of the present invention includes a self-balancing reaction force frame 1, a mechanical loading device 2, a multifunctional loading block 3, a pipeline guide block 4, and a liquid circulation device 5 , Temperature and pressure controller 6, pipeline 7, lateral restraint 8, outlet fixed block 9, etc. The basic assembly process of the experimental device is the same as that of Embodiment 1. It is only necessary to connect the liquid circulation device 5 and the temperature and pressure controller 6 to the self-balancing reaction frame 1, connect the inflow pipe 5e to the liquid inlet 3d of the loading block 3b, and connect the outflow pipe 5f Access to fixed block 9b.

[0047] The body fluid circulation device 5 includes: 5a is a raw material tank, 5b is a feed pump, ...

Embodiment approach 3

[0053] Temperature, pressure, mechanical mixed loading method. Such as Figure 1-2 As shown, the overall buckling simulation test device of the temperature, pressure and mechanical loading pipeline proposed in the patent embodiment of the present invention includes a self-balancing reaction force frame 1, a mechanical loading device 2, a multifunctional loading block 3, a pipeline guide block 4, and a liquid circulation Device 5, temperature and pressure controller 6, pipeline 7, lateral restraint 8, outlet fixing block 9, etc. The basic assembly process of the experimental device is the same as the second embodiment.

[0054] Before the temperature and pressure loading is carried out by the temperature and pressure controller 6, the fastening bolts 11 used to fix the multifunctional loading block 3 are first loosened to ensure that the multifunctional loading block 3 can slide axially along the loading end slide rail 1a. Rotate the turntable 2d of the mechanical loading dev...

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Abstract

The invention relates to a multifunctional loading pipeline overall buckling experiment system. The system includes a self-balance reaction frame (1), a mechanical loading device (2), a multifunctional loading block (3), a pipeline guiding block (4), liquid circulating device (5) and a controller (6). The liquid circulating device (5) comprises a raw material tank (5a), a feed pump (5b), a preheater (5c) and a backpressure valve (5d). The liquid in the raw material tank (5a) is pumped into a pipe (7) through a feed pump (5b) and a circulation pipeline; the preheater (5c) and the backpressure valve (5d) are arranged in the circulation pipeline; the controller (6) is used to control the feed pump (5b) and preheater (5c); exhaust valves (9c) are arranged on the connection positions of the multifunctional loading block (3) and a fixed block (9b) with the rear end of the pipe (7). The invention can realize pipeline temperature, pressure and force loading, and can compare the differences of the loading modes.

Description

technical field [0001] The invention belongs to the field of structural engineering, and relates to a pipeline integral buckling experiment system. Background technique [0002] Submarine pipelines are an important part of deep sea oil extraction. In order to ensure that the extracted crude oil can be transported to the coast or storage facilities normally, the crude oil must be transported under high temperature and pressure. At the same time, limited to deep-sea operating conditions, deep-sea oil pipelines can only be laid directly on the seabed and are not easy to bury. Therefore, the overall buckling problem of deep-sea pipelines is more significant. In particular, deep-sea oil pipelines are mostly multi-layer composite pipelines, such as pipe-in-pipe, bundled pipelines, etc. The overall buckling characteristics of these pipelines lack systematic research, and they are often analyzed as equivalent to single-layer pipelines, which is obviously unrealistic . [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/18G01N3/02G01N3/00
Inventor 王哲陈志华刘红波赵思玥何永禹马克俭
Owner TIANJIN UNIV
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