Combined strengthening type bulking-preventing device capable of preventing submarine pipeline from bulking-propagation

A submarine pipeline, reinforced technology, used in pipeline laying and maintenance, pipes/pipe joints/fittings, machinery and equipment, etc., can solve the problems of inconvenient installation and transportation, high cost, low buckling efficiency, etc., and achieve easy installation and transportation. , The manufacturing process is simple, and the effect of improving the anti-bending effect
CN103162013AInactive Publication Date: 2013-06-19TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2013-06-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of submarine pipeline paving and relates to a combined strengthening type bulking-preventing device capable of preventing a submarine pipeline from bulking-propagation. The combined strengthening type bulking-preventing device capable of preventing the submarine pipeline from bulking-propagation is fixed on the exterior of the submarine pipeline which is needed to be protected. The combined strengthening type bulking-preventing device capable of preventing the submarine pipeline from bulking-propagation comprises at least two arc-shaped long-striped steel plates and at least two steel rings. A cross section of every arc-shaped long-striped steel plate is a section of a circular arc. The inner radius of the circular arc is equal to the outer radius of the submarine pipeline. A plurality of arc-shaped grooves are arranged inside of the steel rings. The inner diameters of the steel rings are equal to the outer diameter of the submarine pipeline. The number of the arc-shaped grooves is not less than the number of the arc-shaped long-striped steel plates. The width of the grooves is equal to the width of the arc-shaped long-striped. Each arc-shaped long-striped steel plate is uniformly distributed on the exterior of the submarine pipeline along the axial direction of the pipeline. Each arc-shaped long-striped steel plate is fit with the submarine pipeline and is embedded in an arc-shaped groove of each steel ring. The combined strengthening type bulking-preventing device capable of preventing a submarine pipeline from bulking-propagation is light in weight, easy to install and capable of having high efficiency at the same time.
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Description

technical field

[0001] The invention belongs to the technical field of submarine pipeline laying, and relates to a buckling arresting device. Background technique

[0002] Submarine pipeline is an important way of oil and gas transportation in offshore oil engineering, and its safe operation is the key to ensure the smooth progress of offshore oil and gas production. The pipe is in an empty state during laying, there is no internal pressure to balance the external water pressure, in addition, the pipe tensioner will give the pipe pre-tension stress, so the pipe will be stretched, resulting in a reduction in the pipe wall thickness, these factors make the pipe in the external water It is easy to crush under pressure. Buckling and crushing will also occur when the pipeline is in-situ and in operation due to corrosion or external forces such as ship unanchoring and impacting the pipeline, seabed force, bending moment caused by seawater, or other disturbances. Under the action...

Claims

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