A torque transmission device connecting an engine turbine and a compressor rotor

Abstract

The invention relates to an engine turbine and compressor rotor connection and torque transmission device which comprises a compressor rotor, a turbine rotor and a connecting screw.The compressor rotor is provided with an inner spline.The turbine rotor is provided with an outer spline matched with the inner spline of the compressor rotor.One end of the connecting screw is provided with a thread and installed in an inner cavity of the compressor rotor, and the other end of the connecting screw is provided with a step and clamped on a step of an inner cavity of the turbine rotor.An outer spline is arranged on the step of the connecting screw and matched with the inner spline on the inner cavity of the turbine rotor.The outer spline on the connecting screw is of a hollow structure and is axially provided with six evenly-distributed through grooves.The device can be smoothly installed and detached and has the advantages of being simple in structure, stable in connection, low in cost, reliable in work, convenient to install and the like.

Description

technical field [0001] The invention is a connection device, especially a torque transmission device for connecting an engine turbine and a compressor rotor, which can realize the connection between the turbine rotor and the compressor rotor of a gas turbine engine and transmit axial force and torque. Background technique [0002] In a gas turbine engine, the compressor rotor will generate a forward axial force during operation, generally up to tens of thousands of Newtons or even hundreds of thousands of Newtons, while the turbine rotor will generate a backward axial force, which will also be as high as tens of thousands of Newtons or even Hundreds of thousands of newtons, if these two axial forces are completely borne by the engine ball bearings, it is likely to cause damage to the ball bearings and failure of the rotor. Therefore, a device is needed to connect the turbine rotor with the compressor, and connect the two opposite Most of the force in the direction is offset ...

AI Technical Summary

Problems solved by technology

At present, there are many types of connecting torque transmission devices, which are mainly divided into the following three types: the first type is a pin or key to transmit torque, and the screw connection, the device has a simple structure, but the torque transmission torque is small; the second type uses end teeth to transmit torque and combine Self-centering, center tie rod connection, the structure transmits large torque and accurate centering, but the parts are processed with high precision, high material requirements, high processing costs, assembly requires a special tensile machine, and the assembly is complicated and costly

The third type is spline torsion transmission and centering on the tooth side, and threaded connection. This structure can transmit large torque and the cost is relatively low, but it needs to design an axial connection structure. The device contains many parts and has a complicated structure. Assembly The decomposition is complicated and the operability is not high

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