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A bend arrester for submarine pipeline with deflector

A submarine pipeline and buckle arrester technology, which is applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problem of few pipeline protection devices, improve the effect of buckle arrest, and prevent vortex-induced vibration , the effect of strengthening the hoop stiffness

Active Publication Date: 2011-12-14
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there are few pipeline protection devices that can prevent buckling propagation and suppress vortex-induced vibration

Method used

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  • A bend arrester for submarine pipeline with deflector
  • A bend arrester for submarine pipeline with deflector
  • A bend arrester for submarine pipeline with deflector

Examples

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 1 As shown, the present invention includes a pair of upper and lower petal shells 3 and four deflectors 1 as the main body, supplemented by a group of inner and outer struts 5, 6 symmetrically distributed at both ends of the buckle arrester. structure. Shell plate and deflector material should be made of API 5L X65 type or higher grade X70, X80 steel of the same material as the deepwater submarine pipeline, and the same steel should be used for inner and outer struts. The main function of the device is to prevent buckling propagation and vortex-induced vibration of the submarine pipeline under complex environments and loads, so as to ensure the safety of the entire pipeline. When the pipeline is laid on the weak seabed, the end struts are inserted into the soil, which can play a certain role in in-situ stability.

[0026] The ...

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Abstract

The invention belongs to the technical field of laying of submarine pipeline facilities and relates to a submarine pipeline buckle arrestor with guide plates. The submarine pipeline buckle arrestor is used for fixing a submarine pipeline and comprises a pair of upper and lower valve shells, at least two groups of brackets and four guide plates, wherein the two groups of brackets are used for supporting the buckle arrestor and the submarine pipeline; the inner diameters of the two valve shells are the same with the outer diameter of the submarine pipeline; a lateral wing eye plate used for fixing the upper and lower valve shells at the outer part of the submarine pipeline is respectively arranged at two sides of each valve shell; the four guide plates are arranged at the outer side of the buckle arrestor; and one end of each guide plate is fixed on the upper valve shell or the lower valve shell, and the other end of each guide plate is fixed on the lateral wing eye plate. In the invention, two-in-one design is utilized, therefore, the construction process is simplified, the cost is lowered, buckle propagation and vortex induced vibration of the submarine pipeline are effectively controlled, and the integration purposes of economy and safety are achieved.

Description

technical field [0001] The invention belongs to the technical field of laying submarine pipeline facilities, and in particular relates to a device capable of effectively preventing buckling propagation of the submarine pipeline and suppressing vortex-induced vibration of the pipeline. Background technique [0002] In actual engineering, the environment in which submarine pipelines are located is extremely complex. First of all, submarine pipelines, especially deepwater submarine pipelines, will bear considerable hydrostatic pressure, which gradually increases with deep water, which requires designers to calculate according to relevant specifications in order to ensure that the ellipticity deviation (less than 0.5%) in manufacturing The minimum wall thickness of a sound pipe without local buckling shall be considered in the determination of the wall thickness. Secondly, during the pipeline laying process, due to improper operation and other reasons, the vertical bending sect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/20
Inventor 杨源余建星卞雪航李智博马维林周清基晋文超柴松
Owner TIANJIN UNIV
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