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Experimental device for simulating bending fatigue of marine flexible hose

An experimental device and bending fatigue technology, which is applied in the field of offshore oil equipment, can solve the problem of inability to effectively simulate the fatigue of flexible hoses, and achieve the effect of shortening the simulation time and increasing the loading frequency.

Pending Publication Date: 2021-06-25
中海油(天津)管道工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on this, it is very necessary to try to manufacture a fatigue testing machine that simulates the pressure of the flexible pipe as much as possible. The existing fatigue testing machine cannot effectively simulate the fatigue of the flexible hose. The device of the present invention can make up for this defect.

Method used

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  • Experimental device for simulating bending fatigue of marine flexible hose
  • Experimental device for simulating bending fatigue of marine flexible hose

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Experimental program
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Effect test

Embodiment Construction

[0064] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0065] like figure 1 and figure 2 As shown in Fig. 1, an experimental device for simulating bending fatigue of marine flexible hoses can be used for mechanical compression load bending fatigue tests and cyclic internal pressure loading fatigue tests.

[0066] The experimental device includes a fixed base 1, a replaceable central fixed end fixture 2, a replaceable end movable fixture 3, a fixed mold 4, a hose joint 5, a pressurization and cyclic pressurization system, and a mechanical pressurization load system , Medium heating and thermal circulation system, video surveillance system, control system.

[0067] The fixed base 1 is used to provide structural support for the experimental device and ensure the stability of the device during the...

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Abstract

The invention discloses an experimental device for simulating bending fatigue of a marine flexible hose. The experimental device comprises an end part movable clamp, a mechanical pressurizing load system, a pressurizing and circulating pressurizing system, a medium heating and heat circulating system and a control system. The end part movable clamps are clamped on the two end parts of the hose; the mechanical pressurization load system can apply load to the middle of the hose; the pressurizing and circulating pressurizing system pressurizes a medium with a set temperature and conveys the medium into the hose, and the pressurized medium can circulate in the hose; and the medium heating and heat circulating system heats the medium conveyed into the hose to a set temperature and keeps the temperature of the medium to the set temperature. According to the invention, bending fatigue simulation of mechanical pressurization load can be carried out on pipes with different calibers, and fatigue condition simulation of cyclic pressurization (pressure relief) load can be carried out on pipes with different angles and calibers by replacing the fixed die.

Description

technical field [0001] The invention relates to offshore petroleum equipment technology, in particular to an experimental device for simulating fatigue tests of marine flexible hoses. Background technique [0002] CNOOC currently has more than 300 subsea pipelines with a length of over 6,000km, among which more than 30 pipelines are out of service or will reach their service life. Submarine pipeline failure will cause serious consequences. The traditional method of repairing failed pipelines is affected by factors such as seasons, weather, and shipping schedules, and the maintenance cycle is long and expensive. Compared with the traditional maintenance method, the short-distance subsea pipeline lining composite hose repair technology has a shorter cycle and less resources. It can also solve the previous pipeline corrosion problem, prolong the service life of the pipeline, and effectively reduce operating costs in an environment of low oil prices. , to achieve the purpose o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/20G01N3/12
CPCG01N3/12G01N3/20G01N2203/0005G01N2203/0019G01N2203/0023G01N2203/0042G01N2203/0073G01N2203/0274G01N2203/0676G01N2203/0682
Inventor 刘海超金磊许良彪杜晓杰荆祥海樊荣兴杨连河曲伟首
Owner 中海油(天津)管道工程技术有限公司
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