Super long automatic welding equipment and method for multiple layers of composite metal filter screens

Abstract

The invention relates to super long automatic welding equipment and a method for multiple layers of composite metal filter screens. In the technical scheme, the top of a lathe bed is provided with a walking trolley assembly which moves through a guide rail; a mandrel, an automatic barrel arm, a floating support, a support cylinder, a holding connecting rod, a support connecting rod and a lower support body are arranged inside the lathe bed; multiple layers of metal filter screens which are required to be coiled and welded are paved on the lower support body; a certain pressure is kept between the multiple layers of metal filter screens and the mandrel through the support cylinder; the automatic barrel arm is used for driving a chain to tightly coiling the multiple layers of metal filter screens on the mandrel; and a direct-current controllable welding electrode descends to weld the multiple layers of metal filter screens. The equipment and the method have the beneficial effects that: automatic coiling and molding can be realized quickly by performing one-time automatic welding; and a molded barrel-shaped filter screen has the advantages of firmness, certain strength, certain shape size specifications, high welding seam quality, regularity, attractiveness, high intensity, processing of a super long piece according to a use requirement, and the like.

Description

technical field [0001] The invention relates to a mechanical processing device, in particular to an ultra-long automatic welding equipment and method for a multi-layer composite metal filter screen. Background technique [0002] In oil field development, oil and gas sand production is a major problem that plagues the development of unconsolidated rock reservoirs: it not only easily leads to production reduction and shutdown of oil wells, but also aggravates the wear and tear of ground and downhole equipment, and in severe cases, it will also cause damage to casings and oil wells. Therefore, in order to ensure the stable and high production of oil fields, some effective measures must be taken to solve the sand control problem of oil wells. The use of large-diameter precision microporous sand filter pipes is the latest development and has been widely promoted in oil fields at home and abroad, namely slotted screens. A sand control tool used, which has the advantages of large f...

AI Technical Summary

Problems solved by technology

[0003] At present, the precision composite sand filter tubes commonly used at home and abroad, the production of the filter sand tubes varies widely, and there is no standard and unified production method, resulting in uneven quality of the sand filter tubes.

However, the domestic production methods are mostly hand-rolled and rolled, and the welding of multi-layer metal mesh cannot be realized at the same time.

In this way, it will be difficult to guarantee the quality of the weld seam of the multi-layer metal mesh

At the same time, due to the backwardness of the rolling method, the roll is soft and the bonding between the layers is not tight, which eventually leads to a decline in the quality of use.

[0004] At present, there are no literature reports on the ultra-long automatic welding equipment and methods of multi-layer composite metal filter screens at home and abroad.

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