Assembly welding manufacturing machine for large pressure vessel

Abstract

The invention belongs to the technical field of a pressure vessel, and particularly relates to an assembly welding manufacturing machine for a large pressure vessel. The assembly welding manufacturingmachine comprises a horizontally-arranged bottom plate, wherein a rotating disc is horizontally and rotatably arranged on the upper surface of the bottom plate, and a base is horizontally and fixedlyarranged on the upper surface of the rotating disc; an annular groove matched with a pressure vessel barrel is formed in the upper surface of the base; and a mounting column is vertically and fixedlyconnected to the part, located at the center of the annular groove, of the upper surface of the base. When the assembly welding manufacturing machine is adopted to weld an end cover and the barrel ofthe large pressure vessel, it is ensured that no radial offset and no axial offset are generated in the welding process of the end cover, and the accuracy of the welding position of the end cover isimproved.

Description

technical field [0001] The invention belongs to the technical field of pressure vessels, and in particular relates to a large-scale pressure vessel assembly, welding and manufacturing machine. Background technique [0002] A pressure vessel is a closed device that holds gas or liquid and carries a certain pressure. Pressure vessels are widely used, mainly used in heat transfer, mass transfer, reaction and other processes, as well as storage and transportation of pressurized gas or liquefied gas; it is used in many sectors such as industry, civil, military and scientific research. has an important position and role. When assembling a large pressure vessel, the end cap needs to be welded to the cylinder body. The method used is to butt the end cap with the cylinder body and fix the end cap and the cylinder body, and then use a welding torch to weld along the joint between the end cap and the cylinder body. In the actual production process, this method has the following probl...

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Problems solved by technology

[0004] The invention provides a large-scale pressure vessel assembly and welding manufacturing machine, aiming to solve the following problems existing in the current welding of large-scale pressure vessel end caps and cylinders: (1) The end caps of large-scale pressure vessels are relatively large in volume and heavy in weight , and the inner and outer surfaces of the end cover are arc surfaces, it is difficult to firmly support the end cover during the welding process, and the end cover is prone to offset along the radial direction of the cylinder, resulting in position deviation of the end cover after welding; (2) due to The side wall of a large pressure vessel is relatively thick, and a certain weld seam needs to be left between the end cover and the cylinder to ensure the welding strength; during the welding process, the end cover is prone to offset along the cylinder axis, resulting in the The uneven width of the weld seam will cause the position deviation of the end cover after welding, and it will also have an adverse effect on the overall strength of the large pressure vessel

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