Marine flexible tube cable bend limiter with annular cavity

A technology of annular cavity and bend limiter, which is applied in the direction of pipeline protection, pipe/pipe joint/pipe fitting, pipeline damage/abrasion prevention, etc. Problems such as wear and tear, heat generation, and changing the external heat transfer efficiency of the umbilical cable can reduce the stress fatigue effect of the hot spot, the connection form is simple and reasonable, and the effect of increasing the reliability of the connection is achieved.
CN110206964APending Publication Date: 2019-09-06DALIAN UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2019-09-06

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Abstract

The invention discloses a marine flexible tube cable bend limiter with an annular cavity, and belongs to the technical field of marine engineering flexible tube cables. The marine flexible tube cablebend limiter comprises n bend limiter bodies; each bend limiter body is formed by connecting completely identical semi-circle cylindrical single bodies; each section of the bending limiting device main body is composed of a male head, a neck section and an annular cavity section, the female head section and the third part are of an integrated forming structure; the contour line of the inner surface of the annular cavity section is a spline curve. The marine flexible tube cable bend limiter with the annular cavity breaks through the configuration of a traditional limiter, and a completely identical semi-circular cylindrical monomer is used and an annular cavity is added; so that the heat dissipation efficiency is high, the hot spot stress fatigue is resisted, the raw materials are saved, and the connection mode is simple and reliable.
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Description

technical field

[0001] The invention belongs to the technical field of marine engineering flexible umbilical cables, and relates to a protection method for excessive bending failure modes of flexible umbilical cables used in marine engineering. Background technique

[0002] With the continuous development of offshore resource development, flexible pipelines and flexible umbilicals (hereinafter referred to as "flexible umbilicals") are more and more widely used. Generally, the flexural rigidity of the flexible umbilical cable for marine engineering is relatively small, and it has good compliance to the bending load borne by the flexible umbilical cable during construction, in-position or maintenance. This also causes the flexible umbilical cable to be easily over-bent in actual engineering applications, and a bend limiter is generally used to ensure safety during its application.

[0003] Due to the advantages of flexible installation and small space requirements, the bend l...

Claims

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