Middle reheating type turbine cooler system applied to airplane pod

Abstract

The invention discloses a middle reheating type turbine cooler system applied to an airplane pod. By adopting middle reheating circulation, the system efficiency is obviously improved. The system comprises an air inlet system, a first-stage turbine, a second-stage turbine, a first-stage heat exchanger, a second-stage heat exchanger, an air compressor and an exhaust system. By means of the system,ram-air in the flying process of an airplane is used as a power source, and after two-stage turbine expansion cooling, a primary surface heat exchanger cools air in an electronic cabin. By means of the system, middle heat re-exchange circulation is adopted, and the unit flow energy heat exchange capability of a turbine cooler is obviously improved; a liquid circulation heat exchange system is notneeded, the primary surface heat exchanger is adopted to lower the weight of the heat exchangers, and the system weight is obviously lowered; the system has a very low additional power consumption amount, and energy consumption of the cooling system is obviously lowered; an air bearing system is adopted by the system, an oil lubricating system is not needed, the system self-weight is lowered, andmeanwhile, the system maintenance is improved.

Description

technical field [0001] The invention relates to an intermediate reheating turbine cooler system applied to an airborne pod, which uses the ram air during the flight of the aircraft as a power source, increases the heat exchange capacity by adding an intermediate heat exchanger, and reduces the post pressure of the turbine to increase the ram The ability of air to do work; the system has the advantages of no power consumption and light weight. Background technique [0002] Airborne pod environmental control system (ECS, Environmental Control System) is the key to ensure the reliable and stable operation of various electronic equipment. It is the main task of ECS to discharge a large amount of waste heat emitted by electronic devices out of the cabin, and it is also an important accessory of the electronic cabin. device. [0003] At present, there are mainly two types of cooling systems. One is the cooling system with a power source. The system generally uses evaporative cycl...

AI Technical Summary

Problems solved by technology

Because the system does not use a reasonable circulation form and high-efficiency components, there is a problem of low heat exchange efficiency, which wastes more compressed air and increases the flight resistance of the aircraft.

For example, some twin-turbine structures have been proposed in the prior art. The main feature is to simply add one power turbine to increase the cooling capacity. However, due to the low utilization rate of the cooling gas by the newly added power turbine bypass, its overall efficiency is higher than that of a single turbine. poor structure

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