Large-aperture pipe circular seam line-up clamp and large-aperture pipe circular seam line-up clamping method

Abstract

The invention discloses a large-aperture pipe circular seam line-up clamp, which comprises a sleeve body, wherein the sleeve body is a steel piece; two tightening and adjusting mechanisms are arranged on the sleeve body along the circumferential direction; each tightening and adjusting mechanism is positioned in a circumferential section which is spaced from an end of the sleeve body by a certain distance and comprises a plurality of groups of adjusting bolts uniformly arranged along the circumference of the tightening and adjusting mechanism; ends of bolted caps of all the adjusting bolts face the axial lead direction of the sleeve body; a circle of groove is formed in the outer wall of an axial center section of the sleeve body; and a plurality of observation holes are uniformly formed along the circumferential direction of the groove. The invention also discloses a large-aperture pipe circular seam line-up clamping method, which is implemented by using the line-up clamp. By the line-up clamp and the line-up clamping method, large-aperture pipe circular seams can be assembled and welded, workpieces are connected with one another firmly and reliably, and the line-up clamp is easy to operate.

Description

Technical field [0001] The invention belongs to the technical field of oil drilling and production pipe manufacturing, and relates to a large-diameter pipe circumferential seam aligner, and the invention also relates to a large-diameter pipe circumferential seam aligning method. Background technique [0002] In the case of large internal pressure and external pressure, when the oil drill adopts pipe-tube butt and pipe-flange butt joints, the position and size of the workpiece are ensured, and strict requirements are put forward on the weld. The weld must be Meet the requirements of strength, toughness, impact, fatigue, etc. Therefore, this weld joint must be a full penetration groove weld joint. This type of workpiece pairing and welding method is: relies on the matching device to connect the workpiece when combined, adjusts the straightness and coaxiality of the workpiece, and transmits torque when the workpiece rotates; after various sizes and positions are adjusted in place, t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a large-diameter pipe ring seam counterpart, which solves the problems that the structure of the counterpart device used in the prior art is unreasonable, inconvenient to use, and affects the installation and use of welding equipment

[0005] Another object of the present invention is to provide a matching method for the circular seam of large-diameter pipes, which solves the problems in the prior art that there is no special matching device, manual matching is used, and the operation efficiency is low

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