Guide pipe frame shaft line whole piece turnover hoisting process

Abstract

A guide pipe frame shaft line whole piece turnover hoisting process comprises the following steps that 1, after a guide pipe frame shaft line whole piece is prefabricated, the guide pipe frame shaft line whole piece is transported to a hoisting preparation area in position; 2, multiple hoisting points are mounted on the guide pipe frame shaft line whole piece; 3, a turnover auxiliary structure isarranged; 4, the guide pipe frame shaft line whole piece of a guide pipe frame is lifted, and a turner in the turnover auxiliary structure is turned to 90 degrees along with the guide pipe frame wholepiece along the turnover face of the turner; and 5, after the guide pipe frame shaft line whole piece is hoisted in position, a scaffold is erected on the high hoisting point, then hoisting point cutting and grinding are carried out, and finally the ground positions are subjected to paint repairing. According to the process, 90-degree turnover hoisting of the guide pipe frame shaft line whole piece is achieved, and the hosting efficiency is improved. The cost of hoisting work and the risk of lifting work are greatly reduced.

Description

technical field [0001] The invention relates to a jacket, in particular to a process for turning over and hoisting the entire axis of the jacket. It belongs to the field of offshore oil engineering. Background technique [0002] At present, the overall size of the jacket axis of offshore engineering is generally relatively large, and it is built horizontally. However, it needs to be turned 90 degrees in place during final assembly. Therefore, the entire jacket axis needs to be turned over and hoisted once. [0003] The existing hoisting methods for the entire piece of the jacket axis are as follows: [0004] The first step is to weld 4 tubular lifting points on the entire piece of the jacket axis; [0005] The second step is to use 4 crawler cranes to pull the tubular lifting point through the wire rope pocket; [0006] The third step is to use 4 crawler cranes to lift at the same time, and lift the jacket axis to a certain distance from the ground; [0007] In the fourt...

AI Technical Summary

Problems solved by technology

[0014] The main purpose of the present invention is to overcome the above-mentioned shortcomings existing in the prior art, and to provide an improved process for turning over and hoisting the entire piece of the jacket axis, which not only solves the problem of turning over and hoisting the whole piece of the jacket axis at 90 degrees, but also improves the hoisting process. efficiency; moreover, it also reduces the cost of lifting operations and the risk of lifting operations

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