Assembling and welding tool for gas turbine exhaust diffuser and assembling method for gas turbine exhaust diffuser

Abstract

The invention provides an assembling and welding tool for a gas turbine exhaust diffuser and an assembling method for the gas turbine exhaust diffuser. The tool comprises a base device and a walking board support, the base device comprises an inner cylinder containing ring and an outer cylinder containing ring, and the inner cylinder containing ring and the outer cylinder containing ring are connected through a connecting frame; and a plurality of positioning partition plates are arranged between the inner cylinder containing ring and the outer cylinder containing ring, a plurality of positioning mechanisms for positioning a flow guide ring are arranged on the positioning partition plates along the inclined faces of the positioning partition plates, the outer cylinder containing ring is connected with a mounting base through a connecting mechanism, and the lower end of the walking board support is connected with the mounting base. According to the assembling tool and the assembling method for the diffuser, the size of the diffuser product in the manufacturing process can be controlled, and the assembling and welding efficiency is improved.

Description

technical field [0001] The invention relates to the field of gas turbine exhaust diffuser assembly, in particular to a gas turbine exhaust diffuser assembly and welding tooling and an assembly method thereof. Background technique [0002] The gas turbine exhaust diffuser is located at the end of the gas turbine, connected to the exhaust pipe by bolts, and supported by the exhaust pipe. The finished gas enters the exhaust nozzle and then enters the exhaust diffuser. Exhaust diffusers are thin-walled radial structures such as figure 1 As shown, the exhaust diffuser is generally composed of inner cylinder, outer cylinder, guide ring, support pipe, reinforcement rib, inner front flange, outer front flange and other parts, most of which are composed of 2 to 4 pieces The individual parts are individually molded and then tailor-welded. While there are errors in the molding dimensions, it is easy to cause error accumulation when tailor-welded into a single part, and subsequent ove...

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Problems solved by technology

[0004] Compared with the integral structure, the two-half Huff plug-in diffuser is limited by the two-half structure. During the assembly and welding process, not only the assembly size is difficult to guarantee, but also the product is not rigid enough after half-division, and the welding will also cause the product to be larger deformation of

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