A gas turbine engine turbine guide vane profile measurement device and measurement method thereof

Abstract

The invention relates to a device for measuring the profile of a turbine guide vane of a gas turbine engine, and the device comprises a pedestal, an X-direction moving mechanism, a vane positioning mechanism, a Y-direction moving mechanism, a lifting mechanism, and a rotating mechanism. The X-direction moving mechanism comprises an X-direction guide rail and an X-direction sliding plate. The vane positioning mechanism comprises a first profiling clamp, a first compressing screw, a second profiling clamp and a second compressing screw, wherein the first profiling clamp, the first compressing screw, the second profiling clamp and the second compressing screw are arranged in the length direction of the X-direction sliding plate. The Y-direction moving mechanism comprises a Y-direction guide rail and a Y-direction sliding plate. The lifting mechanism comprises a guide rod, a sliding seat, an upper cover, and a screw. The rotating mechanism comprises a meter rod and a handle knob. The invention also discloses a method for measuring the profile of the turbine guide vane of the gas turbine engine. The device is characterized in that the device is simple in operation, is high in efficiency, can achieve the real-time comparison, and can complete the measurement of the size of the profile of a repaired vane through the comparison of measurement data.

Description

technical field [0001] The invention relates to the technical field of aero-engine maintenance, in particular to a gas turbine engine turbine guide vane profile measurement device and a measurement method thereof. Background technique [0002] The turbine guide vane is one of the most critical core components of the gas turbine engine. Its main function is to rectify the high-temperature and high-pressure gas flow to the turbine rotor blades according to the required distribution method and direction, so that the turbine shaft rotates to drive the compressor to do work. The turbine guide vane is next to the outlet of the combustion chamber. Its working temperature is high and the temperature difference is large. It acts on thermal stress, thermal shock and vibration load. The failure modes include thermomechanical cracks, falling blocks, high temperature oxidation, thermal corrosion, etc., and the failure rate is high. Repair Great value. [0003] The turbine guide vane is ...

AI Technical Summary

Problems solved by technology

However, the detection method using profiling requires thin molds, large quantities, and good openness of the blades.

For double-connected blades and triple-connected blades, especially blades with small size and three-dimensional complex surfaces, such as aeroengine auxiliary power unit (APU) turbine guide blades, etc. (the size of double-connected blades is only about 50mm×30mm×30mm), relying on Die detection is not only difficult to operate, but also the quality is not easy to guarantee and the efficiency is low

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