Undersea suction anchor

Abstract

The invention discloses an undersea suction anchor which comprises a main drum, a top face of the main barrel is sealed, a lower end of the main barrel is opened, and a main barrel drainage hole is arranged on the top face of the main drum. The undersea suction anchor is characterized in that a barrel skirt is movably sleeved on the main drum, the barrel skirt comprises a horizontal top face and a barrel-shaped lateral wall, a barrel skirt drainage hole is formed in the horizontal top face of the barrel skirt, a telescopic hook locating the barrel skirt at the upper portion of the main barrel is arranged on the barrel-shaped lateral wall at the upper portion of the main barrel, an anchor ring concentric with the main barrel is arranged at the upper end of the main barrel, anchor branches are evenly arranged on the anchor ring, one ends of the anchor branches are hinged to the anchor ring, and the other ends of the anchor branches are hinged to the barrel skirt through inclined support rods. The whole vertical section of the suction anchor is in an umbrella shape, in the sinking process of the anchor body, along with landing-on-seabed of the barrel skirt, the anchor branches are driven by the inclined support rods to be gradually opened, and after the main barrel sinking is finished, the anchor branches cling to the surface of the seabed in a horizontal extending mode. The undersea suction anchor can improve the integral stability of the suction anchor, increases pulling resistance and horizontal bearing force, and reinforces wave-corrosion-resistance performance.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power engineering and marine engineering, and relates to an offshore wind turbine foundation, an offshore platform mooring, a floating barrel positioning, a lighthouse, and a jacket structure foundation, in particular to a seabed suction anchor. Background technique [0002] With the accelerated development of offshore oil and gas resources exploitation and the rise of offshore wind power generation, the basic design of offshore drilling platforms and offshore wind farms has become an important topic in this field. Suction anchors, as a new type of offshore structural facility, have been widely used in ship mooring, buoy positioning, storage facilities, lighthouses, jackets, and offshore platforms. The suction anchor foundation is similar to a rigid short pile. The most widely used suction anchor in actual engineering is a barrel-shaped structure with a closed top and an open bottom. The si...

AI Technical Summary

Problems solved by technology

Although this structure can improve the vertical bearing capacity of the anchor body, it cannot effectively improve the horizontal bearing capacity and overall stability, and has little effect on improving the erosion of seabed soil.

[0006] The self-installing suction anchor is characterized by controlled water injection into the airtight top compartment to achieve stable sinking, and by means of drainage and exhaust decompression in the compartment, a pressure difference between the top and bottom of the anchor is formed to achieve suction penetration. Its advantages are " Self-floating towing, stable sinking", but its reuse rate is low, and there is not much improvement in carrying capacity and overall stability.

Images