CN102381479B - Comprehensive environmental control/liquid cold and heat energy management system for non-stamping air inlet duct - Google Patents

Abstract

A comprehensive environmental control/liquid-cooled thermal energy management system without a ram inlet, which belongs to the field of aircraft airborne equipment, and specifically relates to the improvement of a comprehensive environmental control/liquid-cooled thermal energy management system without a ram intake. The present invention is composed of four parts: two-wheel high-pressure water-removing refrigeration assembly, liquid cooling system 1, liquid cooling system 2 and fuel system. The high-pressure water-removing refrigeration assembly and liquid cooling system 1 are coupled through an air-liquid heat exchanger. The liquid heat exchanger is located downstream of the compressor outlet in the two-wheel high-pressure water removal refrigeration assembly, and it is located between the fuel-liquid heat exchanger and the liquid pump in the liquid cooling system. The invention reduces the performance compensation loss of the refrigeration system, improves the water removal and refrigeration efficiency of the refrigeration assembly, effectively reduces the impact on the flight performance of the aircraft, improves the fuel efficiency of the aircraft, and has good economical efficiency of the aircraft.

Description

A comprehensive environmental control/liquid cooling thermal energy management system without ram inlet

technical field

The invention belongs to the field of aircraft airborne equipment, and in particular relates to the improvement of a comprehensive environment control/liquid cooling thermal energy management system for a non-ramming air inlet.

Background technique

The shortcomings of current technology are mainly manifested in the following aspects:

On the one hand, the refrigeration systems currently used on aircraft mainly include air circulation-based environmental control systems and liquid circulation-based liquid cooling systems. The former is generally used for ventilation and cooling of cockpits and electronic equipment, while the latter is mainly used for electronic equipment with large thermal loads. cooling. These two refrigeration systems both use air-to-air heat exchangers or air-to-liquid heat exchangers to transfer the heat load of the cockpit or electronic equipment to the outside atmosphere, which will lead to an increase in the compensatory loss of the performance of the refrigeration system and an increase in the flight resistance of the aircraft. and reduced flight performance.

On the other hand, as the flight altitude increases, the cooling load of the environmental control system becomes smaller and the heating load becomes larger, and the thermal load of large electronic equipment is in a full-power working state at high altitude, which requires the largest cooling capacity. The explanation is simple The 1+1 has the problem of insufficient utilization of the cooling capacity of the cooling system, indicating that the current system design does not consider the feasibility of using part of the cooling capacity of the liquid cooling system to cool the air of the environmental control system as the flight altitude increases.

Contents of the invention

Purpose of the present invention: the present invention mainly aims at the problem that the cooling capacity utilization rate of the refrigeration system existing in the current aircraft is not high, and proposes a comprehensive heat management design concept of the two refrigeration systems, and uses the liquid cooling system to transfer the compression heat of the compressor and the fuel and the fuselage The design concept of air flow as a heat sink to transfer the heat load of electronic equipment reduces the amount of ram air used by the refrigeration system, and realizes low compensatory loss and green refrigeration system design that meets the cooling needs of aircraft.

Technical scheme of the present invention is:

A comprehensive environment control/liquid cooling thermal energy management system without ram air inlet, characterized in that it consists of four parts: a two-wheel high-pressure dewatering cooling assembly, a first liquid cooling system, a second liquid cooling system and a fuel system , the two-wheel high-pressure water-removing refrigeration assembly and the first liquid cooling system are coupled through an air-liquid heat exchanger. In the cooling system, it is located between the fuel-liquid heat exchanger and the liquid pump;

The first liquid cooling system and the fuel system are coupled through a liquid-fuel heat exchanger, and the liquid-fuel heat exchanger is located between the air-liquid heat exchanger and the liquid-liquid heat exchanger in the first liquid cooling system;

The first liquid cooling system and the second liquid cooling system are coupled through a liquid-liquid heat exchanger, which is located between the fuel-liquid heat exchanger and the shut-off valve in the first liquid cooling system, at Two liquid cooling systems are located between the skin radiator and the electric heater.

The two-wheel high-pressure dewatering cooling assembly is composed of a compressor, an air-liquid heat exchanger, a high-pressure water separator, a turbine, and a low-pressure water separator, and the above-mentioned devices are connected by conventional methods.

The first liquid cooling system is composed of a liquid pump, a one-way valve, a shut-off valve, a liquid-liquid heat exchanger, a liquid-fuel heat exchanger and an air-liquid heat exchanger, and the above devices are connected by conventional methods.

The second liquid cooling system is composed of a liquid pump, a one-way valve, a shut-off valve, a skin radiator, a liquid-liquid heat exchanger and an electric heater, and the above devices are connected by conventional methods.

The fuel-liquid heat exchanger is a submerged fuel-liquid heat exchanger.

Bypass valves are installed between the respective outlets and inlets of the skin radiator, liquid-fuel heat exchanger and electronic equipment.

The beneficial effects of the present invention are: the comprehensive thermal energy management system has the following advantages:

1. Using skin radiators and air-fuel heat exchangers, the cooling components of the environmental control system and the liquid cooling system have zero demand for ram air, thereby canceling the opening of the fuselage ram air and reducing the performance compensation of the refrigeration system loss;

2. Use part of the cooling capacity of the liquid cooling system to cool the compression heat of the compressor of the refrigeration component, reduce the gas temperature at the turbine inlet, thereby obtaining a lower turbine outlet temperature, and improve the water removal and cooling efficiency of the refrigeration component;

3. It effectively reduces the impact on the flight performance of the aircraft, improves the fuel efficiency of the aircraft, and improves the economy of the aircraft.

Description of drawings

Figure 1: Schematic diagram of an integrated environmental control/liquid-cooled thermal energy management system without a ram inlet

Detailed ways

The present invention will be further described below by means of specific embodiments:

In the actual working process of the comprehensive environmental control/liquid-cooled thermal management system without ram inlet, the high-pressure and high-temperature air from the air source system is first compressed by the compressor to increase the temperature and pressure, and then cooled by the air-liquid heat exchanger. The free water is separated through the high-pressure water separator, and then the turbine expands and cools down to a lower temperature, and then the free water in the air is further separated through the low-pressure water separator. The outlet air temperature can generally reach -10°C or even lower.

The first liquid cooling system coupled with the cooling component of the environmental control system is driven by a liquid pump to flow resistance, through the one-way valve and the shut-off valve in turn, then through the liquid-liquid heat exchanger and the liquid-liquid heat exchanger to cool down, and then through the air -The liquid heat exchanger absorbs the compression heat of the compressor, and finally returns to the inlet of the liquid pump to complete a cycle.

The second liquid cooling system coupled with the first liquid cooling system is driven by a liquid pump to flow resistance, through the one-way valve and the shut-off valve in turn, first through the skin radiator to cool down, and then through the liquid-liquid heat exchanger and electronic equipment Heat up, return to the inlet of the liquid pump, and complete a cycle.

In addition, by controlling the opening of the respective bypass valves of the skin radiator, liquid-fuel heat exchanger and electronic equipment, the flow of coolant flowing through them can be adjusted to meet the cooling requirements of the cooling components of the environmental control system and electronic equipment, thereby Improve the cooling efficiency of the refrigeration system.

Claims (6)

1. the comprehensive ring control/liquid cooling thermal management systems without ram air duct, it is characterized in that, formed by two-wheeled high pressure water separation regenerative air cycle cooling system cooling assembly, first liquid cooling system, second liquid cooling system and fuel oil system four parts, two-wheeled high pressure water separation regenerative air cycle cooling system cooling assembly and first liquid cooling system are by the coupling of air-liquid heat exchanger, this air-liquid heat exchanger is positioned at blower outlet downstream at two-wheeled high pressure water separation regenerative air cycle cooling system cooling assembly, and in first liquid cooling system, it is positioned between fuel oil-liquid heat exchanger and liquor pump;

First liquid cooling system and fuel oil system are by the coupling of liquid-oil fuel combustion heat exchanger, and this liquid-oil fuel combustion heat exchanger is positioned between air-liquid heat exchanger and liquid-liquid heat exchanger in first liquid cooling system;

First liquid cooling system and second liquid cooling system are by the coupling of liquid-liquid heat exchanger, this liquid-liquid heat exchanger is positioned at fuel oil-liquid heat exchanger and turn-offs between valve in first liquid cooling system, in second liquid cooling system between covering radiator and electric heater.

2. the comprehensive ring control/liquid cooling thermal management systems without ram air duct according to claim 1, it is characterized in that, described two-wheeled high pressure water separation regenerative air cycle cooling system cooling assembly is made up of air compressor, air-liquid H Exch, High Pressure Water Separator, turbine, low-pressure water separator.

3. the comprehensive ring control/liquid cooling thermal management systems without ram air duct according to claim 1, it is characterized in that, described first liquid cooling system is made up of liquor pump, check valve, shutoff valve, liquid-liquid heat exchanger, liquid-oil fuel combustion heat exchanger and air-liquid heat exchanger.

4. the comprehensive ring control/liquid cooling thermal management systems without ram air duct according to claim 1, it is characterized in that, described second liquid cooling system is made up of liquor pump, check valve, shutoff valve, covering radiator, liquid-liquid heat exchanger and electric heater.

5. according to the comprehensive ring control/liquid cooling thermal management systems without ram air duct described in claim 1 or 3, it is characterized in that, described fuel oil-liquid heat exchanger is immersion fuel oil-liquid heat exchanger.

6. the comprehensive ring control/liquid cooling thermal management systems without ram air duct according to claim 1, is characterized in that, covering radiator, liquid-oil fuel combustion heat exchanger and and outlet separately of electronic machine and entrance between bypass valve is installed.