Welding deformation control method and device for gas turbine flame tube rectifying ring assembly

Abstract

The invention discloses a welding deformation control method and device for a gas turbine flame tube rectifying ring assembly. The device comprises a first pressing plate, a positional tolerance positioning pin, diffusion box simulation blocks, an outer ring positioning groove, an inner ring positioning groove and a second pressing plate. According to the method, a rectifying outer ring, a rectifying inner ring and connecting plate columns are welded to form a first annular assembly which comprises an annular flow channel cavity located between the rectifying outer ring and the rectifying inner ring; then, multiple diffusion boxes are grouped and welded to a diffusion box inner supporting ring and a diffusion box outer supporting ring to form a second annular assembly; and finally, the second annular assembly is integrally arranged in the annular flow channel cavity of the first annular assembly, spot welding positioning is conducted, and the first annular assembly and the second annular assembly are welded.

Description

technical field [0001] The invention relates to the technical field of gas turbine welding deformation control, and mainly relates to a method and a control device for controlling the deformation of the cross-sectional area of ​​a flow channel during welding of a gas turbine flame tube rectifying ring assembly. Background technique [0002] The rectification ring assembly of the gas turbine flame tube is mainly combined with argon arc welding and vacuum brazing, and 40 diffuser boxes and 10 horseshoe-shaped plate columns are connected with the outer rectification ring and the inner rectification ring to form a rectification ring assembly. According to the design requirements, the installation height of the diffuser box is not greater than 4±0.3mm, and the roundness of the outer rectifying ring and the inner rectifying ring after welding is not greater than 2.0mm. Therefore, in order to ensure the design requirements, it is necessary to have a reasonable processing method and...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide a method and device for controlling the welding deformation of the gas turbine flame tube rectifying ring assembly, which solves the problem that the cross-sectional area of ​​the diffuser box of the above flame tube rectifier ring assembly has a large deviation after welding, and the welding height of the diffuser box exceeds 4±0.3mm. And the coaxiality difference between the inner and outer rings after welding, the position of multiple horseshoe-shaped plate columns exceeds the design requirements

Images