Cylindrical pile leg

Abstract

The invention discloses a cylindrical pile leg, and belongs to the field of ocean platforms. The cylindrical pile leg comprises a pile leg barrel. The bottom end of the pile leg barrel is used for being connected with a pile shoe. The cylindrical pile leg further comprises submerged pumps, drain pipes and a remote control valve. The remote control valve is arranged on the side wall, close to the bottom end, of the pile leg barrel and is used for controlling whether an inner cavity of the pile leg barrel communicates with the outer portion of the pile leg barrel or not. The submerged pumps arearranged at the bottom of the inner cavity of the pile leg barrel. The drain pipes are arranged in the inner cavity of the pile leg barrel. One end of each drain pipe is connected with the corresponding submerged pump, and the other end of each drain pipe stretches out of the top of the pile leg barrel. When a self-elevating ocean platform prepares pile standing, the remote control valve is opened, seawater passes through the valve to enter the pile leg, seawater pressure inside and outside the pile leg is offset, external loads borne by the pile leg are reduced, the wall thickness of the pileleg barrel is reduced, the weight of the pile leg is reduced, and the manufacturing cost and manufacturing difficulty of the pile leg are reduced.

Description

technical field [0001] The invention relates to the field of offshore platforms, in particular to a cylindrical pile leg. Background technique [0002] The self-elevating offshore platform relies on the support of the legs to operate at sea, and the legs need to be retracted when self-propelled or towed. Legs are usually divided into cylindrical legs and truss legs. Due to the advantages of good rigidity, strong resistance to environmental loads, simple structure, and low cost, cylindrical pile legs are widely used in offshore operations with a working water depth below 65m. [0003] After the cylindrical leg is installed, in addition to bearing the weight of the platform, the support force of the seabed and the environmental load, the underwater part of the cylindrical leg is also subjected to the pressure of the seawater outside the leg on the leg cylinder. In order to avoid the deformation of the cylindrical leg caused by the pressure of the seawater outside the leg on ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the prior art that the increase in the wall thickness of the leg cylinder will inevitably lead to an increase in the weight and size of the leg, and further increase the difficulty and cost of making the leg cylinder, the embodiment of the present invention provides a Cylindrical legs

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