Method for detecting parts of transition section of combustion chamber

Abstract

The invention discloses a method for detecting parts of a transition section of a combustion chamber, more particularly discloses that a main function of parts of a transition section of a combustionchamber of the heavy-duty gas turbine in the combustion chamber components is the transition. The method comprises the following steps of: transferring the high-temperature gas from an inlet end to anoutlet end through the profile transition to achieve the purpose of rectification; designing and manufacturing an integrated measuring tool to detect the size of the parts of the transition section of the combustion chamber by simulating the assembly state of the parts of the transition section of the combustion chamber; evaluating the size of the parts of the transition section of the combustionchamber by detecting the relative size of the outlet end in the process of detecting only when the air inlet end is fixed. The method for detecting parts of the transition section of the combustion chamber has the advantages of judging the processing quality of the parts of the transition section of the combustion chamber by using the comprehensive measuring tool, avoiding the problem that the coordinate measuring machine narrows the detection tolerance range, and improving the part detecting efficiency. The test results are intuitive and specific, which is convenient for production and processing size adjustment and fitter repair, and provides reference and basis for processing and testing of other similar parts.

Description

technical field [0001] The invention relates to the field of detecting parts in the transition section of a combustion chamber of a heavy-duty gas turbine, in particular to a method for detecting parts in the transition section of a combustion chamber. Background technique [0002] The transition section of the combustion chamber of heavy-duty gas turbine products is a welded piece of medium-thick plate sheet metal. It has a special-shaped cylinder structure. 13 to 24 sections are smooth. In order to detect the distance between the center of the circular inlet of the transition section and the center of the fan-shaped square of the outlet, the left-right deviation between the center of the fan-shaped square of the outlet and the center of the circular inlet of the inlet, and the flatness of the end face of the fan-shaped square of the outlet , the traditional detection method is to use the three-coordinate CMM to establish a coordinate system according to the requirements o...

AI Technical Summary

Problems solved by technology

The disadvantage of this detection method is that it narrows the machining dimension tolerance range of parts in the transition section of the combustion chamber, and judges qualified parts as out-of-tolerance parts

This is because the measurement datum established by the three-coordinate CMM inspection is formed according to the end face of the part to be inspected or the inner and outer contours of the end face, which leads to a deviation between the measurement datum of the inspected part and the design datum of the part, which affects the judgment of the feature size of the part

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