Rotor support structure and gas turbine

A support structure, gas turbine technology, applied in the directions of gas turbine devices, liquid fuel engines, mechanical equipment, etc., can solve the problems of component lubrication and cooling oil leakage, complex supporting structures of the first bearing and the second bearing, and easy damage to the sealing ring, etc. Achieve the effect of reducing the maximum peak of vibration, reducing the technical difficulty of design, and reducing unbalanced loads
CN111894737BActive Publication Date: 2021-07-30AECC COMML AIRCRAFT ENGINE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AECC COMML AIRCRAFT ENGINE CO LTD
Publication Date
2021-07-30

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Abstract

The present invention relates to a support structure and a gas turbine comprising the same, wherein said support structure comprises a first support member comprising a first section for connection to a fan rotor bearing assembly and a second section for connection to a support frame; and connection means comprising a fuse part and an elastic assembly; wherein the adjacent ends of the first section and the second section are connected in parallel by the fuse part and the elastic assembly, and the elastic assembly allows When disconnected, it bears the load transmitted from the first section, and forms an elastic constraint between the fan rotor bearing assembly and the support frame. The above-mentioned support structure has the advantages of partial unloading when an FBO event occurs, preventing stress concentration, and easy design, and the above-mentioned gas turbine has the advantages of safety and reliability.
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Description

technical field

[0001] The invention belongs to the technical field of gas turbines, in particular to a rotor supporting structure and a gas turbine including the same. Background technique

[0002] At present, the rotors of most civil turbofan engines are composed of high-pressure rotors and low-pressure rotors, and the low-pressure rotors pass through the high-pressure rotors and are supported to the stator casing by supporting structures. The low-pressure rotor generally consists of a fan, a booster stage and a shaft, usually supported by three bearings. A rotor support structure connecting the first bearing assembly and the second bearing assembly transfers loads generated in the fan section of the low pressure rotor to the support frame.

[0003] During the operation of the turbofan engine, the large-size fan blades may break or fall off (FBO) due to factors such as bird strikes or fatigue. After the FBO incident, the low-pressure rotor still maintains a high speed, a...

Claims

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