A circulation structure for reducing the temperature rise of wind resistance of rotating bolts

Abstract

This application belongs to the technical field of aero-engine control, and specifically relates to a circulation structure for reducing the wind resistance and temperature rise of rotating bolts, including an air collection chamber and an exhaust chamber arranged at both ends of the rotating bolt, and a connection between the air collection chamber and the exhaust chamber. Flow channel, the flow channel includes an inlet section, a transition section and an outlet section; the flow channel direction of the transition section is parallel to the rotation axis of the rotating bolt, and the inlet section starts from the gas collection chamber and runs along the first A curved direction extends to the transition section, the first curved direction has the same component as the relative flow direction of the airflow, and the outlet section extends from the transition section (32) along a second curved direction to the In the exhaust cavity, the second bending direction has a component opposite to the relative flow direction of the airflow. The application effectively reduces the wind resistance and temperature rise of the rotating bolts under the rotating system, and is suitable for the environment of the narrow chamber of the aero-engine.

Description

technical field [0001] The application belongs to the technical field of aero-engine design, and in particular relates to a circulation structure for reducing wind resistance and temperature rise of rotating bolts. Background technique [0002] Aeroengine is a complex and precise mechanical product, which has the characteristics of high rotation speed, high thrust and strong reliability. There is a common bolt structure installed on the rotating parts in aero-engines. This structure plays a role in stirring the airflow passing through it, which greatly increases the temperature rise of the airflow along the way, which is not conducive to the cooling of the engine and poses a threat to the safety of the engine. adverse effects. [0003] At present, there are two common ways to deal with the wind resistance and temperature rise of bolts, which are: [0004] a) Design the shape of the bolt, for example, design it into a new shape with low flow resistance such as a drop shape;...

AI Technical Summary

Problems solved by technology

[0010] a) It is difficult to assemble, it is difficult to apply in the typical narrow chamber of aero-engine, and the feasibility is not good;

[0011] b) When it is used in the rotary system, the cooling effect is poor

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