Sealing tooth staggered type squeeze oil film damper

Abstract

The invention relates to a sealing tooth staggered type squeeze oil film damper. The sealing tooth staggered type squeeze oil film damper is arranged outside a bearing in a sleeving mode and comprisesan elastic bearing, a bearing pedestal is arranged outside the bearing, an inner damper ring serves as the head of the elastic bearing, an outer damper ring serves as the bearing pedestal, a rotor issleeved with the bearing, the outer damper ring and the inner damper ring are in clearance fit, an oil film clearance serves as the clearance, an oil supply groove is formed in the outer damper ring,an oil supply hole is formed in the oil supply groove and located above the oil film clearance, sealing teeth are arranged at the ends of the outer damper ring and the inner damper ring in the peripheral direction, and tips of the two sets of sealing teeth are engaged. Through the reasonable design of the technical scheme, the sealing teeth of the inner ring and the outer ring can be completely engaged, a vertical gap is reduced, a lubricating oil flowing out channel is limited, the leakage amount is reduced, and the damping effect is greatly improved.

Description

Technical field: [0001] The invention belongs to the technical field of damper design, and in particular relates to a staggered seal tooth squeeze oil film damper. Background technique: [0002] Aeroengine is a high-speed rotating machine composed of a rotor system. The harsh working conditions such as high speed, high air velocity, and high temperature make the rotor system bear various complex and huge loads. This will lead to more prominent rotor imbalance and aggravated rotor vibration due to processing and assembly errors, which will pose a huge hidden danger to engine safety and also have a negative impact on engine performance, thereby affecting the overall performance of the aircraft. [0003] At present, for the vibration reduction of the rotor system, the common and effective method is to install a squeeze film damper in the rotor system. This structure is very simple, takes up little space, and has good vibration reduction effect. It has been practically used in ...

AI Technical Summary

Problems solved by technology

[0009] 1) The closed damper adds seals such as piston rings, the structure is more complex than the open damper, the design and manufacture are more difficult, and the work is not as stable and reliable as the open damper;

[0010] 2) There is an axial length at both ends of the closed damper to facilitate slotting and installation of seals. The oil film at both ends is not squeezed enough, and the axial length is not fully utilized

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