Assembly method of grate ring of diffuser assembly

Abstract

The invention discloses a method for assembling a grate tooth ring of a diffuser assembly, which includes the following steps: Step 1: put the parts of the grate tooth ring to be assembled into a heat treatment furnace for overall heating and heat preservation, the heating temperature is 300°C-400°C, and the heat preservation time 1±0.25 hours, keep the grate ring at normal temperature; step 2: put some gaskets on the bottom of the small end of the part near the grate ring to be assembled when assembling the grate ring; step 3: place the grate ring and the gasket under normal temperature Put the piece into the part that is heated as a whole; Step 4: After installing the grate ring, return to normal temperature, remove the gasket, and keep the part standing still during the process of returning to normal temperature. The assembling method of the invention not only ensures the quality of the parts, but also ensures the assembling requirements of the grate ring, thereby ensuring that the parts meet the processing requirements.

Description

technical field [0001] The invention relates to the technical field of component assembly, in particular to a method for assembling a grate ring of a diffuser assembly, and is mainly aimed at an assembly method for ensuring that the assembly of the grate ring meets requirements when a certain type of aeroengine diffuser assembly is assembled. Background technique [0002] Such as figure 1 Shown is an important part of an aero-engine combustor—the diffuser assembly. The part is in a closed ring structure. The outer ring 1 and the inner ring of the part are brazed and connected by blades 2. There is a high assembly requirement on the inner ring. For the grate ring 3, due to the needs of the part structure and subsequent processing, it is required to strictly ensure the assembly requirements of the grate ring 3. The diffuser assembly is an important part of the combustion chamber of a certain type of aero-engine. The performance and quality of the parts have a very important a...

AI Technical Summary

Problems solved by technology

Local heating is used at the assembly point, the inner ring expands when heated, the outer ring 1 is at room temperature, and the parts are heated unevenly, causing the blade 2 between the outer ring 1 and the inner ring to be deformed due to uneven force, thereby affecting the processing quality of the parts. In addition, Knocking with a copper rod or wooden rod to ensure the gap and using a feeler gauge to check the gap not only makes the processing cycle longer, but also makes it difficult to control the assembly gap

Conventional processing methods are difficult to guarantee the quality of parts and assembly requirements

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