Circular seam welder

Abstract

The invention belongs to the field of oilfield machinery, and in particular relates to a circular seam welder used in a manufacturing process of an oil extraction sand control tube in an oilfield. The circular seam welder comprises a rotary box; the rotary box comprises an electric motor, a guide screw and a hand wheel; the electric motor is connected with a rotating shaft through the guide screw and a three-jaw chuck; the hand wheel is arranged on the lower part of the rotary box; and the hand wheel is connected with a guide rail. A filter sleeve runs freely through a forward / back button on the rotary box, so that the auxiliary time of a welding process is shortened, and the efficiency is improved; moreover, the accurate moving position of a welding seam is conveniently observed, the width of the welding seam is even and consistent, and the product quality of a product is ensured; and through the tight connection of the hand wheel and the guide rail, the position of the rotary box is fixed and reliable, and the quality and the safety are improved.

Description

technical field [0001] The invention relates to the field of oil field machinery, in particular to a girth welder used in the production process of sand control pipes for oil production in oil fields. Background technique [0002] In the production process of sand control pipes for oil production in oilfields, the three claws of the rotary box drive the filter sleeve to rotate to complete the welding of the ring seam. The forward and backward of the filter sleeve is realized by moving the rotary box, and the positioning of the rotary box is realized by adding support at the back. of. However, in the specific operation, the forward and backward of the filter sleeve must be realized by manual movement, which is very inconvenient and the positioning of the rotating box is inaccurate; the position of the weld seam cannot be directly seen during the movement of the filter sleeve, resulting in inconsistency in the width of the weld bead , resulting in low welding quality, and the...

AI Technical Summary

Problems solved by technology

However, in the specific operation, the forward and backward of the filter sleeve must be realized by manual movement, which is very inconvenient and the positioning of the rotating box is inaccurate; the position of the weld seam cannot be directly seen during the movement of the filter sleeve, resulting in inconsistency in the width of the weld bead , leading to low quality of welding, and the auxiliary time of manual operation is long, and the welding efficiency is low

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