Graphite sealing test shaft run-out adjusting and measuring device

Abstract

The invention discloses a graphite sealing test shaft run-out adjusting and measuring device, and relates to the technical field of graphite sealing ring sealing test of aero-engines. The device comprises an adjusting box body, a graphite sealing test device, a rotor run-out adjusting device and a measuring device; the graphite sealing experiment device comprises a main shaft, a supporting bearing, a support and a graphite sealing ring test piece; the main shaft is rotationally mounted on the adjusting box body through the supporting bearing; the first end of the main shaft is connected with the driving system, the graphite sealing ring test piece is mounted on the upper part of the support, and the second end of the main shaft penetrates through the graphite sealing ring test piece; the rotor run-out adjusting device comprises a bearing box, an adjusting bearing is assembled in the bearing box, a spindle is assembled on the inner ring of the adjusting bearing, and the bearing box is connected with a radial adjusting device. The measuring device is arranged close to the main shaft run-out measuring point and is used for measuring runout of the main shaft run-out measuring point. The device provided by the invention meets the actual needs of adjusting and monitoring the run-out of the main shaft in the sealing performance experiment of the graphite sealing ring.

Description

technical field [0001] The invention relates to the technical field of sealing performance test of graphite sealing rings of aeroengines, in particular to a graphite sealing test shaft runout adjustment and measuring device. Background technique [0002] The sealing device has a key influence on a number of important indicators of the aero-engine, from the micro level to the engine gas flow rate, pressure ratio, thrust-to-weight ratio, and fuel consumption rate, and from the macro level to the maintenance cost, maintenance difficulty, and overall machine life. Especially the sealing device used as the seal of the main shaft of the aero-engine needs to have the ability to be easily assembled and work stably in a small space, and needs to have the characteristics of small size, low density, and high safety. The graphite material just has low density, high strength, high thermal conductivity and low expansion, excellent self-lubrication, and can form a good running-in with a va...

AI Technical Summary

Problems solved by technology

Due to periodic shaft beating, the sliding friction is no longer uniform and presents periodic characteristics, which in turn causes structural damage to the graphite sealing ring. The main failure forms are wear and brittle fracture friction and wear. This contact characteristic has a great impact on the performance of the sealing device and Lifespan has a huge impact

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