Hollow circular tube test piece for verifying endurance life of hollow turbine blade and construction method
A turbine blade and long-life technology, which is used in the field of hollow circular tube test pieces and construction to verify the long-term life of hollow turbine blades, to avoid the influence of thin-wall effect and ensure the effectiveness.
Pending Publication Date: 2022-07-15
AECC SHENYANG ENGINE RES INST
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Problems solved by technology
[0003] The purpose of this application is to provide a hollow circular tube test piece and construction method for verifying the lasting life of hollow turbine blades, so as to solve or alleviate at least one of the problems in the background technology
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[0026] In order to make the implementation purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application.
[0027] like figure 1 As shown, the construction method of the hollow circular tube test piece provided by the application first identifies the key parts of the durable life through the simulation calculation and analysis of the turbine blade strength, and then separates the structural characteristic parameters of the key parts from the structural design of the hollow turbine blade, extracts The stress and temperature of key parts are constructed according to the structural parameters, which can reflect the structural characteristics and stress state of the hollow turbine blade itself. The wall thickness deviation of the hollow tube test piece is limited to e...
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The invention provides a hollow circular tube test piece construction method for verifying the endurance life of a hollow turbine blade. The hollow circular tube test piece construction method comprises the following steps: identifying a key part of the endurance life of the hollow turbine blade through strength simulation analysis of the hollow turbine blade; structural characteristic parameters of key parts are separated from the key parts of the endurance life of the hollow turbine blade, and stress and temperature of the key parts are extracted; according to the structural characteristic parameters, a hollow circular tube test piece capable of reflecting the structural characteristics and the stress state of the hollow turbine blade is constructed, and the shape and the outer diameter of the hollow circular tube test piece are consistent with those of a standard test bar; and the wall thickness of the hollow circular tube test piece is consistent with the wall thickness of the hollow turbine blade corresponding to the structural characteristic parameters of the key part of the hollow turbine blade. The method provided by the invention can accurately reflect the structural characteristics and stress characteristics of the hollow turbine blade, and ensures that the test result of the endurance life of the hollow circular tube test piece can represent the real endurance life of the hollow turbine blade.
Description
technical field [0001] The application belongs to the technical field of turbine blade testing, and in particular relates to a hollow circular tube test piece and a construction method for verifying the durable life of a hollow turbine blade. Background technique [0002] In order to verify the lasting life of the hollow turbine blades, the turbine blade life is usually verified on the complete machine. However, this method uses a complete machine for verification, and the time cost, labor cost and expense cost are relatively large. Therefore, a method of using metal test rods or metal sheets to perform long-lasting life tests in a high temperature environment is proposed to replace the real blades for the life verification of hollow turbine blades. However, due to the structural differences between metal test rods or metal sheets and hollow turbine blades There is a large difference, so the test results of metal test bars or metal plates are extremely poor for reference. ...
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IPC IPC(8): G06F30/17G06F30/15G06F30/20G06F119/14G06F119/04G06F119/08
CPCG06F30/17G06F30/15G06F30/20G06F2119/14G06F2119/04G06F2119/08
Inventor 赵宝建郭勇程荣辉曹茂国丛佩红靳力孟博
Owner AECC SHENYANG ENGINE RES INST