Method for detecting sectional profile of transition section of gas turbine combustion chamber

Abstract

The invention discloses a method for detecting sectional profile of a transition section of a gas turbine combustion chamber and belongs to the technical field of the detection of complex metal products. The invention provides the method for detecting the sectional profile of the transition section of the gas turbine combustion chamber, which can perform total-section measurement on the sectional profile of the transition section and has the advantage of convenient operation. The method comprises the following steps: 1, supporting and positioning a detected part on a measurement bracket; 2, establishing a measurement coordinate system on a platform of a three-coordinate measuring machine; 3, scanning each section of the detected part one by one through the three-coordinate measuring machine, namely, moving a three-coordinate scanning origin to a geometrical centre of one detected section, scanning the section and repeating the operations until all the sections of the detected part are scanned one by one; 4, processing scanned data and generating a scanned section figure according to the processed scanned data; and 5, comparing the generated scanned section figure with a theoretical figure, performing size marking and evaluating a detection result.

Description

Technical field: [0001] The invention belongs to the technical field of detection of complex sheet metal products, and in particular relates to a method for detecting the profile degree of a transition section of a combustion chamber of a gas turbine. Background technique: [0002] The transition section is one of the components of the gas turbine combustor. The combustor is used to convert the chemical energy in the fuel (gas) into thermal energy, and heat the high-pressure air after the compressor boost to the allowable temperature before the turbine so that it can enter the turbine to expand and do work. . The combustion chamber is one of the important parts of the gas turbine, and the reliability, economy and life of the gas turbine unit largely depend on the reliability and effectiveness of the combustion chamber. The working condition of the combustion chamber is very harsh, it works under high temperature and high load, and bears the static load and vibration load ge...

AI Technical Summary

Problems solved by technology

Existing detection methods for the cross-section profile of the transition section of the combustion chamber of a gas turbine often use a special frame template, and its significant disadvantage is that due to the space limitation of the transition section part structure, it cannot realize the full-section measurement, and can only measure 6 pieces intermittently. Cross-section; and long manufacturing cycle, difficult processing and verification, inconvenient manual operation, and prone to misjudgment

Especially in the development of the first part, as the basis for determining the shape of the forming mold, this detection method cannot provide accurate quantitative data

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