Interstage sealing disc test fixture

Abstract

The invention provides an inter-stage sealing disc test fixture, which comprises a first-stage simulation disc assembly, a second-stage simulation disc assembly and several positioning assemblies, the first-stage simulation disc of the first-stage simulation disc assembly and the second-stage simulation disc assembly The secondary dummy disc of the disc assembly sandwiches the inter-stage sealing disc, the primary dummy disc and the end face in contact with the inter-stage sealing disc are in close fit, and the secondary dummy disc and the stage The end faces that are in contact with the inter-stage sealing discs are closely matched; a plurality of the positioning components are arranged around the circumference of the inter-stage sealing discs, and the positioning components are connected to the first-level simulation disc and the second-level simulation disc, and the positioning components The primary and secondary simulated disks are axially clamped. The inter-stage sealing disc test fixture simulates the real installation boundary of the inter-stage sealing disc, and avoids the influence of the inter-stage sealing disc test frequency, modal and high cycle fatigue caused by boundary constraints and processing problems caused by different boundaries. The question of the correctness of the lifetime results.

Description

technical field [0001] The invention relates to an interstage sealing disc test fixture. Background technique [0002] Generally speaking, the interstage sealing disc only exists in the double-stage high-pressure turbine disc structure, and its function is to seal the secondary guide vanes. like figure 1 and Figure 5 As shown, the structure of the inter-stage sealing plate 100 is basically a drum type. The inter-stage sealing plate 100 has a relatively large plate 101 in the middle, a web 102 extending outward along the edge of the plate 101, and the plate 101. The two ends surrounded by the web 102 are thin-walled drums 103, wherein the webs 102 connect the drum 101 with the inner peripheral surface of the drum 103. The drum 103 of the interstage sealing disc 100 with the above structure may bring certain vibration problems. At present, in the aero-engines produced by domestic and foreign engine companies, serious accidents of roulette burst have occurred, and accident...

AI Technical Summary

Problems solved by technology

The boundary of the interstage sealing plate is complicated. If the real high-pressure turbine primary plate and high-pressure turbine secondary plate are used to constrain the interstage sealing plate, firstly, the mass of the entire test piece is large, and the thrust of the test bench required will be relatively large. Second, The material, processing cost, and processing cycle of the real disk are also relatively large

Images