Device and method for measuring air flow of inner cavity of multi-union guide vane

Abstract

The invention discloses a device and method for measuring the air flow of inner cavities of multi-connected guide blades of an aero-engine. The blade inner cavities of the guide blades are isolated through an isolation assembly to form a front cavity and a rear cavity; the guide blade is fixed through the fixing assembly; meanwhile, the shape of the cross section of the front air inlet pipeline is matched with that of the front air inlet, and the shape of the cross section of the rear air inlet pipeline is matched with that of the rear air inlet, so that the influence on the measurement result caused by flow limitation is avoided; compared with the prior art, the flow distribution assembly is used for distributing and conveying flow, the problem of air leakage caused by abrasion of a hose is solved, and the flow measurement efficiency is high. According to the scheme, through mutual cooperation of the isolation assembly, the fixing assembly and the separation assembly, measurement of the air flow passing through the inner cavity of the multi-union guide vane is rapidly and efficiently completed, compared with the prior art, the problems that a hose is prone to abrasion, and flow limiting and air leakage are avoided are solved, and the measurement result is high in accuracy; meanwhile, the passing condition of air flow in a local area can be reflected, and local burning is avoided.

Description

technical field [0001] The invention relates to the technical field of measurement of multiple guide vanes of aero-engines, in particular to a measuring device for air flow in an inner cavity of multiple guide vanes of an aero-engine. In addition, the present invention also relates to a method for measuring the air flow in the cavity of the multiple guide vanes of the aero-engine using the above-mentioned measuring device for the air flow in the cavity of the multiple guide vanes of the aero-engine. Background technique [0002] As an important part of an aero-engine, high-pressure turbine guide vanes often need to meet the requirements of normal use in high-temperature environments. As a result, high-pressure turbine guide vanes need to be provided with a large number of air film holes on the blade body and edge plates in addition to the high-temperature resistance of the material itself. In order to discharge the cold air from the air inlet of the guide vane of the high-pr...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a measuring device and method for measuring the air flow in the inner cavity of multiple guide vanes of an aero-engine, in order to solve the current limitation, soft The tube is easy to wear and leaks and cannot reflect the technical problems of the passage of air flow in a local area

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