Environment control and nitrogen production coupling system comprehensively utilizing aircraft cabin pressure and working method

Abstract

The invention discloses an environment control and nitrogen production coupling system comprehensively utilizing aircraft cabin pressure and a working method, and belongs to the field of aircraft airborne electromechanical systems. According to the invention, the inlet pressure of two groups of cooling turbines of a refrigeration package and the inlet pressure of a hollow fiber membrane nitrogen-making device are increased by utilizing a gas compressor in a boosting system, and the pressure of oxygen-enriched gas discharged from an airborne nitrogen-making system is increased by utilizing a gas compressor in an inverse boosting system, so that the oxygen partial pressure of modulated gas entering a cabin is increased. According to the invention, a coupling design method is adopted to fullyrecycle oxygen-enriched gas discharged from an airborne nitrogen-making fuel tank inerting system, so that the oxygen partial pressure of the cabin is effectively improved, the comfort of passengersis enhanced, and adverse reactions brought to passengers by high altitude oxygen deficit are reduced; and the pressure difference between the cabin and an equipment cabin is fully utilized, so that the system is high in energy utilization rate, simple in structure, easy to adjust and control and high in 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 nitrogen control coupling system and a working method for comprehensively utilizing aircraft cabin pressure. Background technique [0002] In high-altitude flight, the control of the aircraft cabin environment is very critical. It guarantees the physiological safety needs of the occupants and the cooling load requirements of the equipment cabin, but the amount of bleed air directly affects the compensation loss of aircraft fuel and the economy of operation. On the basis of physiological safety needs, reducing the bleed air volume of the aircraft engine compressor and improving the energy utilization rate of the bleed air flow is the focus of the environmental control system design. However, the current aircraft cabin environmental control system generally uses a three-wheel booster refrigeration pack to It does not ...

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Problems solved by technology

[0008] The present invention aims at technical defects such as potential safety hazards and waste of resources in the prior art, and provides an environment control and nitrogen production coupling system and working method that comprehensively utilizes the pressure of the aircraft cabin, and comprehensively utilizes the different pressures of the aircraft cockpit and the equipment cabin. The system-level design coupling of environmental control and inerting of the on-board nitrogen-generating fuel tank solves the above-mentioned problems

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