A lateral displacement control device for anchoring disc-type bare-laid pipelines

Abstract

The invention relates to an anchoring plate type naked pipeline lateral displacement control device. The anchoring plate type naked pipeline lateral displacement control device comprises an anchoring plate (1) used for a pressure bearing pipeline (5), a sliding bearing (2), a mooring rope (3) and self-unlocking hooks (4), wherein the anchoring plate (1) comprises a disc (6), connection rings (7) and multiple cylinders (8) with openings in the bottom; the cylinders (8) are evenly distributed; one middle connection ring (7) used for being connected with the mooring rope (3) is fixedly arranged in the center of the disc (6); the other two hook connection rings (7) used for being connected with the self-unlocking hooks (4) are fixedly arranged on the two sides of the disc (6); the sliding bearing (2) comprises an inner bearing ring (9), an outer bearing ring (11) with a groove (10) and a protection layer structure (12); the outer surface of the outer bearing ring (11) is provided with the groove (10); the protection layer structure (12) is fixed to the inner bearing ring (9). According to the anchoring plate type naked pipeline lateral displacement control device, the problem that lateral displacement is large in the whole bending process of a deep sea naked pipeline can be solved effectively.

Description

[0001] Technical field [0002] The invention belongs to the field of overall buckling control of bare pipelines, and is used for lateral displacement control when overall buckling of pipelines occurs. Background technique [0003] With the development of offshore engineering technology and the development of offshore oil and gas resources, especially the exploitation of deep-water oilfields and marginal oilfields, the working pressure of submarine pipelines continues to increase, and their design temperatures generally reach above 100°C, even 150°C. Submarine pipelines that mostly work in high temperature and high pressure environments. Under the joint action of thermal load and pressure load, the pipeline will undergo axial deformation, and under the limitation of the surrounding soil, the pipeline will bear large axial stress. When the axial stress reaches a certain value, the overall buckling of the pipeline will occur, including axial overall movement, vertical buckling ...

AI Technical Summary

Problems solved by technology

When the overall buckling of the pipeline occurs, the device does not provide lateral soil resistance when the lateral movement distance of the pipeline is within the designed safety distance; when the lateral movement distance of the pipeline reaches the design limit safety distance, it can increase the pipeline Lateral soil resistance, so as to control the further increase of the lateral displacement of the pipeline, and effectively solve the problem of excessive lateral displacement during the overall buckling process of the deep-sea bare pipeline

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