Welding method for circular seam of mitre elbow pipeline casing
A welding technology for shrimp elbows and circular seams, which is applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of inability to guarantee welding quality, inability to weld shrimp elbow pipes, and welding of shrimp elbow pipes that do not meet the design requirements, etc. problem, to achieve the effect of improving quality
Active Publication Date: 2014-07-30
SICHUAN BLUSR MACHINERY
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Problems solved by technology
As we all know, the annular seam surface of the shrimp elbow pipe is an elliptical surface instead of a circular surface, so the uniform welding of the shrimp elbow pipe cannot be performed by manually turning the shrimp elbow pipe, and the welding quality cannot be guaranteed; in addition, by manually turning the shrimp elbow pipe During the rotation of the head pipe, it is easy to change the angle value at the joint of the two unit pipe shells, so that the welding of the whole shrimp elbow pipe does not meet the design requirements
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0017] The circular seam welding method of the shrimp elbow pipe shell of the present invention is mainly used for welding and manufacturing the shrimp elbow pipes with large diameter and thick pipe wall of gasification furnaces in the industrial fields such as petroleum and chemical industry. Please refer to Figure 1 to Figure 3 , the gas delivery elbow section of the gasifier includes a straight section 100 and a shrimp elbow pipe 200; the shrimp elbow pipe 200 ...
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The invention discloses a method for welding the circumferential seam of a shrimp elbow pipe shell. The method comprises the following steps: a. Matching the inclined surfaces of at least two unit pipes that have been processed and connecting them with a rib plate; b. Corresponding shrimp elbows Select the cylindrical tooling for the shape and structure of the pipeline, and install the cylindrical tooling on the rotary tire; c. Install the shrimp elbow pipe on the cylindrical tooling; d. Stake out and project the cylindrical tooling and the shrimp elbow pipe; e. Adjust the angle and position of the shrimp elbow pipe according to the lofting and projection results; f. Rotate the rotary tire at a constant speed to drive the cylinder tooling and the shrimp elbow pipe to rotate around the axis of the cylinder tooling, and weld the shrimp elbow pipe ring seam surface. The method for welding the circular seam of the shrimp elbow pipe shell of the present invention can quickly and accurately complete the welding operation of the circular seam of the shrimp elbow pipe shell of the gasifier, and can ensure the angle of the joint of the shrimp elbow pipe shell during the welding process The value does not change, which improves the welding quality of the girth seam.
Description
technical field [0001] The invention relates to the field of chemical, petroleum and other production equipment manufacturing, and in particular to a method for welding the circular seam of the pipe shell of the shrimp elbow pipe used for welding the large-diameter pipe of the gasification furnace. Background technique [0002] Gasifiers used in petroleum, chemical and other industrial fields are complex in structure and bulky compared to ordinary gasifiers, and their pipes are not only large in diameter (generally more than one meter in diameter), but also have a large wall thickness (usually The pipe wall thickness is above 50mm). Therefore, the manufacturing process of gasifiers used in petroleum, chemical and other industrial fields is also obviously different from that of general gasifiers. [0003] The gas pipe elbow section of gasifiers used in petroleum, chemical and other industrial fields usually includes shrimp elbow pipes, which are composed of at least two unit...
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IPC IPC(8): B23K37/053B23K31/02
Inventor 向仕荣赵清万谢祖明张杰张定元
Owner SICHUAN BLUSR MACHINERY