Vertical pipe jointing device for expansion corrugated pipes and pipe jointing welding method

Abstract

The invention discloses a vertical pipe jointing device for expansion corrugated pipes and a pipe jointing welding method. The vertical pipe jointing device comprises an upper and a lower expansion corrugated pipe hydraulic servo clamping mechanisms, a gap hydraulic servo adjusting mechanism and a device bracket, wherein the upper and the lower expansion corrugated pipe hydraulic servo clamping mechanisms are arranged by taking vertically and coaxially-jointed expansion corrugated pipes as centers, and consist of upper and lower corrugated pipe clamps and upper and lower clamp hydraulic servo transmission mechanisms; the upper and the lower corrugated pipe clamps are two symmetrical components which are connected to the upper and the lower expansion corrugated pipe hydraulic servo clamping mechanisms and of which the inner side cross sections have semi-8-shaped structures matched with the standard shape of a clamped corrugated pipe; and the upper and the lower corrugated pipe clamps are connected with pistons of the hydraulic servo transmission mechanisms respectively. By adopting the vertical pipe jointing device for performing horizontal pipe jointing operation on expansion corrugated pipes, high pipe jointing accuracy, high efficiency, high automatic degree and low labor intensity are achieved.

Description

Technical field [0001] The invention belongs to the field of petroleum drilling, and particularly relates to an end-to-face joint device during the welding process of the bellows in the expansion bellows technology. Background technique [0002] Before welding, it is first necessary to perform bevel assembly, and the pipe alignment device is mainly used to solve the problem of bevel assembly before welding. According to the welding process of bellows, every two sections of bellows need to be welded horizontally on site first, and a section of long pipe is prefabricated. At the wellhead, the prefabricated long pipe is vertically buttted with the corrugated pipe driven into the well, and then horizontal welding is performed. operating. Therefore, a vertical pipe aligning device at the well head is required. At present, the pipe alignment is carried out on the drill floor by manual pipe alignment. During the docking process, the expansion bellows need to be rotated and moved, and ...

AI Technical Summary

Problems solved by technology

[0004] (1) Relatively simple and unsafe

The plane and height of the drill floor are limited,

[0005] (2) During the docking process, the expansion bellows need to be rotated and moved, which must be manually rotated and moved, which is labor-intensive

[0006] (3) Low precision and low efficiency of the tube, increasing the difficulty of subsequent welding, affecting the quality and efficiency of subsequent welding

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