A method for commissioning and testing the flow rate in the cavity of the hollow blade of the aeroengine

Abstract

The invention provides an aero-engine hollow blade core space flow adjusting and measuring method, comprising: A) providing a device; for one air outlet mouth whose flow needs to be measured, placing a corresponding adjusting block; placing in the other three middle communication grooves with corresponding sealing blocks respectively so that the pressing rod, the adjusting block and the sealing blocks are in contact; B) using the sealing blocks to seal their corresponding air outlet mouths; detecting the sealing conditions of the air outlet mouths; C) measuring the flow value if the sealing is valid; D) if the flow value does not meet the design requirement, making the adjusting block extrude downwards the corresponding cover plate until the flow value meets the design requirement so as to complete the measurement and adjustment to the flow of the first air outlet mouth; and E) for the rest three air outlet mouths, repeating the step A to D so as to complete the measurement and adjustment of the blade core space flow. According to the aero-engine hollow blade core space flow adjusting and measuring method provided by the invention, the qualification rate of parts and the stability of product quality are increased substantially.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to a method for measuring and adjusting flow in the inner chamber of a hollow blade of an aero-engine. Background technique [0002] In order to adapt to the severe cold environment, the aero-engine has designed a hollow copper blade containing a cavity as a 0-level guide vane for bleed air anti-icing. figure 1 It is a schematic diagram of an exploded structure of an aeroengine blade, figure 2 for figure 1 The combined state of the blades is a top view structure diagram, see figure 1 , 2 As shown, the blade 1 is a hollow blade, which is combined by the cover plate 11 and the base body 12 through brazing. Its geometric shape and inner cavity surface are all free-form surfaces, with high dimensional accuracy requirements, and belong to thin-walled blades. The shaft end of the base body 12 is provided with an air intake hole 13, and the base body 12 is provided with a recesse...

AI Technical Summary

Problems solved by technology

It takes time to wait for wax sealing and wax melting every time, and it is difficult to ensure that the wax flowing into the inner cavity is cleaned after wax melting

While the work efficiency is low, the excess in the lumen cannot be controlled

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