Maritime waterproof conduit piling cap device

Abstract

The invention relates to a maritime waterproof conduit piling cap device. The maritime waterproof conduit piling cap device is characterized by comprising an outer sleeve with the top end sealed and the bottom end open, an inner sleeve and a plurality of inner wings, wherein one top end of the inner sleeve is fixed on the sealed surface of the top end of the outer sleeve and the bottom end of the inner sleeve is open; and the plurality of inner wings are fixed on an inner barrel wall of the inner sleeve. The bottom end of the outer sleeve is in a horn opening shape. An annular gap is formed between an inner barrel wall of the outer sleeve and an outer barrel wall of the inner sleeve. The size of the annular gap is slightly larger than the wall thickness of a waterproof conduit. The thickness of every inner wing is equal to the wall thickness of the waterproof conduit. The maritime waterproof conduit piling cap device can be widely applied to maritime petroleum drilling and other offshore engineering piling operations.

Description

technical field [0001] The invention relates to a piling cap device, in particular to a piling cap device for offshore water riser conduits. Background technique [0002] During the construction of the offshore oil drilling riser, the riser is usually hammered into the expected depth by piling with a piling hammer. In order to prevent the top of the riser from being deformed by the pile hammer during piling, it is necessary to add a piling cap to the upper end of the riser. On the one hand, although the existing piling cap of the riser can avoid the deformation of the riser to a certain extent, it cannot provide support for the inner wall of the riser because of its hollow structure inside. The phenomenon that the top of the water conduit is damaged and deformed; on the other hand, due to the small contact surface of the existing piling cap for force transmission, the force transmission of the piling hammer is uneven, resulting in the inclination of the piling cap and the w...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a piling cap device for offshore water riser, which can make the water riser in the piling process evenly flush into the ground, and reduce the isolation caused by the eccentric force of the pile cap body. The deformation of the water conduit, so as to ensure the smooth progress of offshore piling operations and the quality of piling

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