Environmental control and airborne nitrogen generation coupling system and working method

Abstract

The invention discloses an environmental control and airborne nitrogen generation coupling system, belongs to the field of aircraft airborne electromechanical systems, and fully utilizes different pressures of an aircraft cabin and an equipment cabin to divide refrigeration bags of an environmental control system into two groups, a traditional three-wheel boosting type air circulation refrigeration bag is adopted to meet the cold load requirement of a cabin, and a three-wheel reverse boosting type air circulation refrigeration bag is adopted to meet the cold load requirement of an equipment cabin; the pressure of oxygen-enriched gas discharged from the airborne nitrogen making system is increased by using a gas compressor in the reverse boosting system, and the oxygen partial pressure of modulation gas entering the cabin is increased. The coupling design method is adopted to fully recycle the exhaust gas discharged from the onboard nitrogen-making fuel tank inerting system, the oxygen partial pressure of a cabin is effectively improved, the comfort of passengers is improved, the adverse reaction of high-altitude oxygen deficit to the passengers is reduced. The system is simple in structure, high in energy utilization rate and low in cost. The device is easy to adjust and control, and has high reliability and realizability.

Description

technical field [0001] The invention belongs to the field of aircraft on-board electromechanical systems, and in particular relates to an environment control and on-board nitrogen production coupling system and a working method. Background technique [0002] In high-altitude flight, the control of the aircraft cabin environment is very critical. It not only guarantees the physiological safety needs of the occupants and the cooling load requirements of the equipment cabin, but also the amount of bleed air directly affects the aircraft's fuel compensation loss and operation economy. Therefore, in On the basis of meeting the physiological safety needs of the passengers, reducing the bleed air volume of the aircraft engine compressor and improving the energy utilization rate of the bleed air flow are the focus of the environmental control design. However, the current aircraft cabin environmental control system generally uses a three-wheel booster refrigeration pack At the same t...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems existing in the prior art, the present invention discloses a coupled system for environmental control and on-board nitrogen production. The present invention utilizes the compressor in the reverse boost system to increase the pressure of the oxygen-enriched gas discharged from the on-board nitrogen production system. Increase the oxygen partial pressure of the modulated gas entering the cockpit, which solves the defects of waste of resources and potential safety hazards in the prior art

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