Flow guide disc installation method and installation device

Abstract

The invention discloses a flow guide disc installation method. The method comprises the steps that firstly, the axial distance L between the upper end face of a compression nut and the tooth top face of the upper end of a turbine disc is obtained through size chain calculation when the compression amount of a flow guide disc reaches the preset compression amount M; then, under the condition that the flow guide disc is not installed, the compression nut is made to move by the axial distance L relative to the turbine disc, and transverse marking and longitudinal marking are conducted on the junction between the compression nut and the outer circle face of the turbine disc; the supporting assembly abuts against the pressing nut so that a thread gap between the pressing nut and the turbine disc can be eliminated. Finally, the flow guide disc is axially compressed through hydraulic equipment, meanwhile, the compression nut is rotated through the split wrench, compared with the prior art, a high-torque wrench does not need to be used for screwing the compression nut, and damage to compression nut threads, turbine disc threads and turbine disc end teeth caused by thread friction force is avoided; and the compression amount can be adjusted without repeatedly disassembling and assembling the flow guide disc, so that the mounting quality and efficiency are obviously improved.

Description

technical field [0001] The present invention relates to the technical field of engine parts assembly, in particular, to a method for installing a deflector. In addition, the present invention also relates to a guide plate installation device using the above guide plate installation method. Background technique [0002] Aero-engine gas turbine rotors have high requirements for installation accuracy, and it is necessary to precisely control the installation size between the turbine disk and the guide disk. The existing installation structure between the turbine disk and the guide disk is an interference fit, and the interference If the amount is large, the guide plate is usually installed by heating, and the guide plate is axially tightened in the direction of applying torque to the compression nut with a large torque wrench. Because the compression amount of the guide plate △M is strictly controlled Therefore, it is necessary to repeatedly disassemble the guide plate to adju...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method and device for installing a deflector to solve the problem of the need to use a large torque wrench to apply torque to the compression nut to tighten the deflector during the installation process of the existing aeroengine gas turbine rotor, and to tighten the deflector at the same time. Decomposing the deflector to adjust the amount of compression, resulting in low installation quality and efficiency of the deflector, and the technical problem that precise control of the installation size cannot be achieved

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