A deep sea suction anchor

By designing a sliding connection for deep-sea suction anchors, the problems of sand liquefaction and seabed erosion in suction anchors were solved, improving bearing capacity and stability, and achieving better anchoring results.

CN116853421BActive Publication Date: 2026-05-29MILITARY TRANSPORTATION UNIV PLA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MILITARY TRANSPORTATION UNIV PLA
Filing Date
2023-05-30
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing suction anchors are prone to liquefaction of the surrounding sand after anchoring, which reduces their bearing capacity, and wave action causes seabed erosion, affecting their normal working life.

Method used

A deep-sea suction anchor was designed, comprising a first anchor tube and a slidable second anchor tube, which are connected by a locking device. The second anchor tube is slidably sleeved on the first anchor tube to increase the initial gravity penetration depth. It is slidably connected by the locking cooperation of the slide and the slide rail to form a sealed environment, improve the seabed erosion problem, and increase the anchoring area.

Benefits of technology

It improves the horizontal and vertical ultimate bearing capacity of the suction anchor, avoids the impact of seabed erosion on the bearing effect, and enhances the stability of the anchoring.

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Abstract

The application provides a deep-sea suction anchor and belongs to the technical field of marine engineering equipment. The suction anchor comprises a first anchor cylinder and a second anchor cylinder. The first anchor cylinder is a hollow cylinder with an open bottom end. The top of the first anchor cylinder is provided with a drain hole for connecting with external negative pressure equipment. The second anchor cylinder is slidably sleeved on the first anchor cylinder. The length of the second anchor cylinder is less than that of the first anchor cylinder. The second anchor cylinder and the first anchor cylinder are fixedly connected through a locking piece. Under external action, the locking piece can release the locking state of the first anchor cylinder and the second anchor cylinder, so that the second anchor cylinder slides relative to the first anchor cylinder. The deep-sea suction anchor provided by the application can improve the problem of seabed erosion caused by the action of underwater current after anchoring, increase the anchoring area and improve the overall stability of the suction anchor.
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