An Active Thermal Control Distributed Electro-hydraulic Servo Steering Gear

Abstract

The invention belongs to the field of aircraft design and relates to an active thermal control distributed electro-hydraulic servo steering gear. Including servo motor, double-rotating hydraulic pump, overflow valve, rudder surface, actuator, evaporator, compressor, expansion valve and condenser; the invention combines distributed electro-hydraulic servo steering gear with evaporation cycle active cooling system , through active cooling of key components such as hydraulic pumps and actuators to ensure that their temperatures are within a reasonable working range. The refrigerant evaporation cycle brings heat to the outside of the device, and takes the heat away through the cold source fluid, ensuring that the internal temperature of the steering gear is controllable and improving the efficiency of external heat exchange. A hydraulic pump and actuator integrated heat exchange device is proposed, and the refrigerant flow channel is arranged in the hydraulic component shell, so that the heat exchange is efficient and the normal operation of the hydraulic system is not affected. The heat insulation layer is arranged between the hydraulic system and the cooling system condenser, and the heat is taken away from the hydraulic system through active cooling, and the heat is prevented from returning through heat conduction through the heat insulation layer.

Description

technical field [0001] The invention belongs to the field of aircraft design and relates to an active thermal control distributed electro-hydraulic servo steering gear. Background technique [0002] Traditional aircraft electro-hydraulic servo steering gear mostly uses a centralized oil source, and the engine drives the pump to provide hydraulic energy for each steering gear of the aircraft. With the development of aircraft design technology, the disadvantages of centralized hydraulic systems cannot be ignored. Long pipelines are difficult to arrange, the reliability of pipeline vibration is reduced, and at the same time, it accounts for an increasing proportion of the total weight of the aircraft hydraulic system. The distributed hydraulic system arranges motors and hydraulic pumps near each steering gear, and uses cables to transmit electric energy instead of pipelines to transmit hydraulic energy, which avoids some problems of long pipeline transmission and has better mai...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of abnormal wear and reliability reduction caused by the internal heating of the aircraft distributed electro-hydraulic servo steering gear, the present invention proposes an active thermal control distributed electro-hydraulic servo steering gear that can realize the internal core zero of the distributed electro-hydraulic servo steering gear. The active control of component temperature can ensure that the internal temperature is relatively constant according to different working conditions and ambient temperature, so that the steering gear is always in a high-performance working state

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