Four-wheel high-pressure water removal environment control system and working method based on different pressures in cabins

Abstract

The invention belongs to the technical field of aircraft environment control, and specifically relates to a four-wheel high-pressure dewatering environment control system based on different pressures in cabins. The invention adopts fan-compressor-first cooling turbine based on the different pressures of aircraft passenger cabin and equipment cabin ‑The four-wheel high-pressure dewatering environmental control system of the second cooling turbine, which passes the bleed air from the aircraft engine compressor through the compressor to increase the pressure, cools and removes water; then cools down through the first cooling turbine, and distributes the cooled gas There are two paths, which respectively flow into the cabin and the second cooling turbine to meet the cooling load requirements of the cabin; after further cooling through the second cooling turbine, the gas flows into the equipment cabin to meet the cooling load requirements of the equipment cabin; The environmental control system operates efficiently and effectively reduces the fuel compensation loss. At the same time, the system is simple and feasible, easy to adjust and control, has high reliability, and is easy to implement.

Description

technical field [0001] The invention belongs to the technical field of aircraft environment control, and in particular relates to a four-wheel high-pressure water removal environment control system and a working method based on different cabin pressures. Background technique [0002] When the aircraft is flying, the external environment changes drastically. How to make the air pressure, temperature, humidity, airflow velocity and cleanliness in the aircraft cabin meet the physiological needs of the passengers and the reliable work of the airborne equipment is very important. Therefore, the environmental control system has become an indispensable part of the aircraft. The advanced part of the environmental control system directly affects the economy of aircraft operation, the comfort of passengers and the reliability of airborne equipment. [0003] Considering the integrated functions of ventilation, pressurization and refrigeration, the current aircraft mainly adopt the air ...

AI Technical Summary

Problems solved by technology

[0005] However, the three-wheel high-pressure water removal and boosting system is widely used at present, and does not make reasonable use of the different pressure requirements of the cockpit and equipment compartment. They simply limit the outlet pressure of the cooling turbine to the cabin pressure altitude. When cooling the equipment compartment, the turbine outlet cools The free expansion directly from the cockpit pressure altitude to the equipment compartment pressure has brought about a huge waste of energy, especially in the current military aircraft environment system, where the thermal load of the equipment compartment accounts for a larger proportion (such as F-22, cockpit / equipment compartment Heat load ratio is 1:10), this waste of energy directly restricts the economy of the environmental system

Images