Jacket hoisting device and method for hoisting jacket with the device

Abstract

The invention provides a self-elevating platform and a method for lifting a jacket by using the self-elevating platform. The self-elevating platform comprises a platform main body, an elevating deviceand a sliding device, wherein the elevating device is used for adjusting the vertical height of the platform main body. The sliding device is arranged on a deck of the platform main body and can moveon the deck. A part of the sliding device can extend out of the edge of the deck outwards and form a jib. The lower part of the extending-out part is connected with a hanger through a cable so as tobe connected with a to-be-lifted object. The self-elevating platform is simple in structure and low in manufacturing cost, and hanging point positioning can be effectively and accurately conducted through arrangement of the sliding device; and meanwhile, because the self-elevating platform is at seat bottom column pile, compared with a traditional floating crane, the self-elevating platform does not move along with the wave during lifting of the jacket, movement and sloshing of a hull due to the wave flow are avoided, and especially, collision between a lifted upper module and the jacket due to the fact that the hull moves along with the waves is avoided, so that lifting operation is safer and more reliable.

Description

technical field [0001] The invention relates to the field of marine engineering equipment construction, in particular to a jacket lifting device and a method for lifting a jacket by using the jacket lifting device. Background technique [0002] The jacket is composed of hollow leg columns and vertical and horizontal bars connecting the leg columns, and a fixed platform is lapped on it, which can be used for offshore oil exploitation. Due to the large size and heavy weight of the jacket and the upper module, it is extremely difficult to disassemble or install. Although the traditional floating crane can solve the problem of difficult disassembly or installation, its construction cost and rental fee are too expensive, and it is necessary to prevent the floating crane from moving with the waves to cause the upper module being lifted to collide with the jacket. Therefore, how to hoist the jacket with a cheaper and more reliable method has become an urgent problem to be solved i...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a jacket lifting device and a method for lifting a jacket by using the jacket lifting device, so as to solve the problems that the jacket is not easy to disassemble or install in the prior art.

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