Assembly and welding process of single upper ring type large-scale split seat ring with base plate

Abstract

The invention relates to an erecting welding technological method for a single-upper-ring type large segmented stand ring with sole plates. A sole plate positioning template and positioning pipes are used for precise positioning; and after splice welding of a lower guide plate, fixed guide vane mounting holes are perforated in a matched mode, and then fixed guide vanes are inserted. The key process problems of stand ring welding deformation, sole plate assembly positioning, sole plate combining through hole processing cost, the production cycle and the like are solved through an auxiliary lower ring, the sole plate positioning templates and the positioning pipes, and the production cost and the production cycle are reduced. According to the stand ring manufactured through the technological method, the problems of assembly positioning, the production cost, welding deformation and the like are effectively solved, and construction site installation requirements are met; the subsequent production cycle and processing cost are greatly reduced, economy and practicability are both considered, and the purposes of lowering cost and improving effects are achieved.

Description

[0001] Technical field: [0002] The invention relates to an assembly and welding process for a single upper ring type large split-petal seat ring with a base plate. [0003] Background technique: [0004] In the past, large-scale seat rings used upper and lower double-ring plate structures. Although the process method of this structure is simple, the material cost is relatively high. Poor, the welding deformation is difficult to control, and the base plate is processed to close the through hole after welding. Although this method has high precision, the equipment processing cost is high and the production cycle is long, which is not conducive to cost reduction and efficiency increase. [0005] Invention content: [0006] The invention provides a reasonable and simple process flow, low cost, short production cycle, easy to control welding deformation and can be used for assembling and welding process of a single upper ring type large split-petal seat ring with a foundation pla...

AI Technical Summary

Problems solved by technology

[0004] In the past, large-scale seat rings used upper and lower double-ring plate structures. Although the process method of this structure is simple, the material cost is relatively high. Poor, welding deformation is difficult to control, and the foundation plate is processed after welding to close the through hole. Although this method has high precision, the equipment processing cost is high and the production cycle is long, which is not conducive to cost reduction and efficiency increase

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