Transverse stator blade assembling method and positioning tool

Abstract

The invention discloses a transverse static blade assembling method and a positioning tool. The tool comprises a first check block and a pressing mechanism thereof, a tail check block and a pressing mechanism thereof, and a plurality of wedge-shaped filler strips. The head check block and the tail check block are used for limiting the circumferential installation positions of the head stator blade and the tail stator blade so as to guarantee that the circumferential installation positions of all the stator blades in the half circle are accurate, and the two pressing mechanisms are used for fixing the head check block and the tail check block to split faces at the two ends of the air cylinder respectively so as to fix all the stator blades in an installation groove of the air cylinder. The wedge-shaped filler strip is used for filling a gap between the outer arc of the crown of the stator blade and the outer circle of the cylinder mounting groove and limiting the radial position of the stator blade in the cylinder mounting groove. The positioning tool can well solve the problems of guaranteeing the assembly precision of the transverse stator blade and fixing the whole position, is simple in structure and convenient to operate, and effectively guarantees the final quality of products.

Description

technical field [0001] The invention relates to an assembly process of a steam turbine static blade, specifically, an assembly method and a positioning tool of a horizontally placed static blade. Background technique [0002] The structure of horizontal stator blade parts is as follows: figure 1 As shown, different from the usual vertical stationary vanes, the two crowns of the stationary vanes are installed in the installation grooves, and the positioning pin holes need to be processed after the half-circumferential stationary vanes are positioned, and finally the positioning pins are used to position each stationary vane in the installation slot. in the tank, such as figure 2 shown. [0003] First of all, the positioning pin holes need to be processed after the half-circle of the horizontal stator blades are assembled, so each stator blade needs to be fixed first to meet the pin hole processing requirements; moreover, there is a large freedom in the radial direction bet...

AI Technical Summary

Problems solved by technology

[0003] First of all, the positioning pin holes need to be processed after the half-circle of the horizontal stator blades are assembled, so each stator blade needs to be fixed first to meet the pin hole processing requirements; moreover, there is a large freedom in the radial direction between the horizontal stator blades and the installation grooves. Clearance, during the assembly process, the stator blades can move in the radial direction and affect the assembly accuracy

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