Device for welding pipe joint in middle of end cover of pressure container

Abstract

The invention relates to a device for welding a pipe joint in the middle of an end cover of a pressure container, belonging to the field of welding. The device provided by the invention comprises a work support platform, a driving motor, a linkage shaft, a shaft sleeve, a rotary table, a cylinder and the like, wherein the driving motor and the shaft sleeve are vertically fixed by a lower support plate of the work support platform; the upper end of the shaft sleeve is connected with a connecting sleeve through a tooth structure; a support sleeve is fixed at the lower end of the rotary table; one end of the linkage shaft penetrates through the support sleeve and is fixed together with a through hole in the center of the rotary table; the other end of the linkage shaft is connected with a bottom plate through a pressure bearing after penetrating through a connecting hole of the support plate on the work support platform, the connecting sleeve and the shaft sleeve; the linkage shaft is connected with the driving motor through a gear driving mechanism between the shaft sleeve and the bottom plate; and the cylinder is fixed on the upper surface of an upper support plate of the work support platform through a cylinder support frame. The device provided by the invention is simple in structure and convenient for operation and has the advantages that the phenomena such as pores, slag-bonding and the like which are easy to generate at a welding position are avoided to ensure that a standard on the sealing performance of the pressure container at the welding position is reached and the qualified rate of products is increased.

Description

technical field [0001] The invention relates to a welding device for an intermediate pipe joint of an end cap of a pressure vessel, which belongs to the field of welding. Background technique [0002] Pressure vessels generally store high-pressure gas or liquid, so the pressure vessel has high sealing requirements. The connection between the pressure vessel end cap and the pipe joint is fixed by welding. The reliability of the welding process here determines the overall sealing performance of the pressure vessel. The key is that at present, the welding of the pressure vessel end cover and the pipe joint mainly adopts the manual welding method, and the adjustment of the welding angle and the arc induction distance is grasped by human experience, especially when welding the pipe joint in the middle of the pressure vessel end cover, so in Pores, slagging and other phenomena are prone to occur at the weld, resulting in poor penetration, causing the overall sealing of the pressur...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor penetration due to the manual welding of pressure vessel end caps and pipe joints in the traditional process, which easily produces pores and slagging at the welds, and provides a pressure vessel end cap and pipe joint. Pipe joint welding device

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