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A bending experiment device for marine composite sandwich pipe

A technology of composite materials and experimental devices, which is applied in the direction of measuring devices, analyzing materials, and testing the strength of materials by applying a stable bending force. It can solve the problems of reducing experimental efficiency, consuming a lot of manpower and material resources, and not being able to guarantee the bending radius. Achieve the effects of improving experimental efficiency, simple structure, and saving manpower and material resources

Active Publication Date: 2019-07-02
YANGTZE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because it is necessary to conduct experiments on the pipeline under two different states of constant curvature radius, the existing experimental devices cannot guarantee the requirements of the bending radius, and cannot well realize the efficient conversion of the two curvature radii, making this type of experiment often require It consumes a lot of manpower and material resources, and also reduces the experimental efficiency

Method used

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  • A bending experiment device for marine composite sandwich pipe
  • A bending experiment device for marine composite sandwich pipe
  • A bending experiment device for marine composite sandwich pipe

Examples

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Embodiment Construction

[0018] The marine composite sandwich pipe bending test device includes a base 1, a briquetting block 2, a hydraulic cylinder 3, a pipe clamp 4 and a clamp base 5; The pressing block 2 is in the shape of two steps, and the step end face of the pressing block 2 is fan-shaped, and the curvature radii of the step end faces are different. The lower step end face of the pressing block 2 is provided with a positioning groove 8; the top end face of the upper step end face is provided with a positioning convex edge 9; the bottom of the pressing block 2 is symmetrically installed with a slide rail limiter 7. The role of the positioning groove 8 and the positioning convex edge 9 is to limit the test piece during the test, so as to prevent the pressure block 2 from breaking away from the test piece.

[0019] A hydraulic cylinder 3 is symmetrically installed on the base 1 at the rear end of the briquetting block 2, and the hydraulic cylinder 3 is connected with the briquetting block 2 thro...

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Abstract

The invention relates to an experimental device, in particular to a marine composite material interlayer pipe bending experimental device which comprises a base, pressing blocks, hydraulic cylinders, pipeline fixtures and fixture bases. The pressing blocks are slidably mounted on the base through guide sliding rails, the hydraulic cylinders are symmetrically mounted on the base at the rear ends of the pressing blocks and connected with the pressing blocks through piston rods, the fixture bases are symmetrically mounted on two sides of the front ends of the pressing block on the base, and the pipeline fixtures are mounted on the fixture bases. The device is novel in design and simple in structure and can meet two different bending curvatures, the hydraulic cylinders push the sector pressing blocks to move in the experimental process, so that bending surfaces of the sector pressing blocks are fitted with fixed interlayer pipes, the interlayer pipes reach a certain bending curvature, two curvature radiuses can be easily switched, experimental efficiency is greatly improved, and a large quantity of manpower and material resources are saved. The experimental device is particularly applicable to bending experiments of marine pipelines.

Description

technical field [0001] The invention relates to an experimental device, in particular to a bending experimental device for composite material interlayer pipes for ocean use. Background technique [0002] With the continuous increase of offshore oil and gas exploration in recent years, composite sandwich pipes have also begun to be used in offshore oil and gas extraction environments. However, when sandwich pipes are used in offshore oil and gas exploitation environments, they must be bent to a certain extent. Before use, the marine pipeline is connected by welding and coiled on a disc with a certain diameter. After being transported to the offshore operation site, it is uncoiled and laid for use. During this process, the sandwich pipe has to bear the stress state of plastic deformation and reverse straightening. The bending test of composite sandwich pipes for marine use is designed to simulate this working condition, and it is also required by relevant standards. At pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/20G01N3/04
CPCG01N3/04G01N3/20G01N2203/0023G01N2203/0048G01N2203/0274G01N2203/04
Inventor 管锋卢娜刘少胡万锋阳婷万继方
Owner YANGTZE UNIVERSITY
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