阅读说明：本技术 一种可使用机载电源的空压机及飞机低温放水的方法 (Air compressor capable of using airborne power supply and low-temperature water discharging method for airplane ) 是由 尹北宁 于 2020-07-16 设计创作，主要内容包括：本发明公开了一种可使用机载电源的空压机及飞机低温放水的方法,该空压机包括空压机主体,所述空压机主体通过电动机驱动以产生压缩空气,空压机主体的压缩空气输出端连接有出气管道,所述出气管道的末端连接用气设备,其特征在于：还包括变频器,所述变频器的输入端与飞机上的机载电源系统电连接,变频器的输出端与所述电动机电连接。上述空压机接机载电源系统时能够正常工作,进而为飞机停机维修或维护提供气源。(The invention discloses an air compressor capable of using an onboard power supply and a method for discharging water at low temperature of an airplane, wherein the air compressor comprises an air compressor main body, the air compressor main body is driven by a motor to generate compressed air, a compressed air output end of the air compressor main body is connected with an air outlet pipeline, and the tail end of the air outlet pipeline is connected with an air using device, and the air compressor is characterized in that: the aircraft power supply system further comprises a frequency converter, wherein the input end of the frequency converter is electrically connected with an onboard power supply system on the aircraft, and the output end of the frequency converter is electrically connected with the motor. The air compressor can normally work when connected with the power supply system, and further provides an air source for aircraft shutdown maintenance.)

1. The utility model provides a can use air compressor machine of airborne power supply, includes the air compressor machine main part, the air compressor machine main part passes through motor drive in order to produce compressed air, and the compressed air output of air compressor machine main part is connected with the pipeline of giving vent to anger, the end-to-end connection gas equipment of the pipeline of giving vent to anger, its characterized in that: the aircraft power supply system further comprises a frequency converter, wherein the input end of the frequency converter is electrically connected with an onboard power supply system on the aircraft, and the output end of the frequency converter is electrically connected with the motor.

2. The air compressor machine that can use on-board power of claim 1, characterized in that: and an air filter for filtering the output compressed air is arranged on the air outlet pipeline.

3. The air compressor machine that can use on-board power of claim 1, characterized in that: and the air outlet pipeline is provided with a pressure limiting device for controlling the pressure of the output compressed air.

4. The air compressor machine that can use on-board power of claim 3, characterized in that: the pressure limiting device is a pressure stabilizing valve.

5. The air compressor machine that can use on-board power of claim 1, characterized in that: still include the shell, the air compressor machine main part is located in the shell.

6. The air compressor machine that can use on-board power of claim 5, characterized by: the shell is made of a heat-insulating material.

7. The air compressor machine that can use on-board power of claim 1, characterized in that: the motor, the frequency converter and the gas-using equipment are respectively grounded through ground wires.

8. A method for discharging water at low temperature of an airplane is characterized in that the air compressor which can use an onboard power supply according to any one of claims 1 to 7 is adopted, after the airplane stops, the onboard power supply system supplies power to the air compressor, the tail end of an air outlet pipeline of the air compressor is connected with a water tank of the airplane, and the air compressor is used for pressurizing and draining water.

9. The method for discharging water at low temperature of an aircraft as claimed in claim 8, wherein the onboard power system is powered by an auxiliary power supply of the aircraft.

10. The method for discharging water at low temperature of an aircraft as claimed in claim 8, wherein the onboard power system is powered by a ground onboard generator.

Technical Field

The invention relates to the technical field of aviation ground equipment, in particular to an air compressor capable of using an airborne power supply and a low-temperature water discharging method for an airplane.

Background

In the aircraft is shut down and is repaired or the maintenance process, often need use the air supply, the air compressor machine can provide the air supply, but, and the air compressor machine on the present market all is 220V, and the voltage of airborne power supply is 115V, and the air compressor machine can't use airborne power supply.

And after the aircraft is landed and stopped, sewage in the water tank needs to be discharged, when the external temperature is less than 0 ℃, the aircraft can be frozen when discharging water, so that the blow-off pipe is blocked, therefore, when the external temperature is less than 0 ℃, the water tank needs to be pressurized and drained, in the prior art, the aircraft APU bleed system is generally adopted to pressurize and drain the water tank, the aircraft APU bleed system can work when an aircraft engine is started, therefore, the engine of the aircraft needs to be kept not to be stopped after the aircraft is landed and stopped, the generated oil consumption is large, the cost is high, and the requirements of energy conservation and emission reduction are not met.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an air compressor capable of using an onboard power supply and a method for discharging water at low temperature of an airplane.

On one hand, the invention provides an air compressor capable of using an airborne power supply, which comprises an air compressor main body, wherein the air compressor main body is driven by a motor to generate compressed air, the compressed air output end of the air compressor main body is connected with an air outlet pipeline, the tail end of the air outlet pipeline is connected with an air using device, the air compressor further comprises a frequency converter, the input end of the frequency converter is electrically connected with an airborne power supply system on an airplane, and the output end of the frequency converter is electrically connected with the motor.

Furthermore, an air filter for filtering the output compressed air is arranged on the air outlet pipeline.

Furthermore, a pressure limiting device for controlling the pressure of the output compressed air is arranged on the air outlet pipeline.

Further, the pressure limiting device is a pressure stabilizing valve.

Further, still include the shell, the air compressor machine main part is located in the shell.

Further, the shell is made of a heat-insulating material.

Further, the motor, the frequency converter and the gas-using equipment are respectively grounded through ground wires.

On the other hand, the invention provides a method for discharging water at low temperature of an airplane, the air compressor capable of using the onboard power supply is adopted, after the airplane stops, the onboard power supply system supplies power to the air compressor, the tail end of an air outlet pipeline of the air compressor is connected with a water tank of the airplane, and the air compressor is used for pressurizing and draining the water.

Further, the onboard power supply system supplies power through an auxiliary power supply of the airplane.

Further, the onboard power system supplies power through a ground vehicle-mounted generator.

The invention has the beneficial effects that:

(1) by adopting the air compressor capable of using the onboard power supply, because the voltage of an onboard power supply system is 115V, and the air compressors on the market are all 220V at present, the voltage frequency of the air compressor is changed by additionally installing the 115V400Hz frequency converter, so that the air compressor can normally work when being connected with the onboard power supply system, and an air source is further provided for aircraft shutdown maintenance.

(2) By adopting the method for discharging water at low temperature of the airplane, when the external temperature is lower than 0 ℃, the air compressor is powered by the airborne power system and is used for pressurizing and discharging water to the water tank of the airplane, so that pressure and safety protection required by water discharging work are provided for the airplane under the condition of not using an airplane APU bleed air system, and therefore, after the airplane is shut down, the aero-engine can be shut down, the oil consumption is reduced, the cost is reduced, and the purposes of energy conservation and emission reduction are achieved.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an air compressor that can use an onboard power supply according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of an air compressor that can use an onboard power supply according to an embodiment of the present invention.

In the drawings, 10-air compressor body; 11-an electric motor; 12-an outlet pipe; 13-an air filter; 14-a pressure limiting device; 20-gas using equipment; 30-a frequency converter; 40-an on-board power supply system; 50-a housing; 60-ground line.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

As shown in fig. 1 and 2, an embodiment of the present invention provides an air compressor that can use an onboard power source, including an air compressor main body 10 and an inverter 30.

The air compressor main part 10 is driven through the motor 11 to produce compressed air, and the compressed air output end of the air compressor main part 10 is connected with an air outlet pipeline 12, and the end of the air outlet pipeline 12 is connected with an air using device 20, and the air compressor main part 10 can adopt the existing air compressor structure on the market, and the embodiment does not limit the specific type thereof.

The input of the frequency converter 30 is electrically connected to an on-board power supply system 40 on the aircraft, and the output of the frequency converter 30 is electrically connected to the electric motor 11. The circuit structure of the frequency converter 30 is shown in fig. 2, and mainly comprises a rectifier bridge, a capacitor, an inverter bridge, a filter, and the like, which belongs to the prior art and is not described herein again.

By adopting the air compressor capable of using the onboard power supply, because the voltage of the onboard power supply system 40 is 115V, and the air compressors on the market are all 220V at present, the voltage frequency of the air compressor is changed by additionally installing the 115V400Hz frequency converter 30, so that the air compressor can normally work when being connected with the onboard power supply system 40, and an air source is further provided for aircraft shutdown maintenance or maintenance.

Preferably, an air filter 13 for filtering the output compressed air is disposed on the air outlet pipe 12. The air filter 13 can filter the output compressed air to ensure the quality of the air source.

Preferably, the air outlet pipe 12 is provided with a pressure limiting device 14 for controlling the pressure of the output compressed air, and the pressure limiting device 14 may be a pressure stabilizing valve. The pressure limiting device 14 limits the pressure of the output compressed air to ensure that the output air pressure is not higher than the pressure required at the end of the gas using equipment 20.

In addition, the air compressor with the onboard power supply further comprises a shell 50, and the air compressor main body 10 is arranged in the shell 50 so as to protect the air compressor main body 10 through the shell 50. In order to ensure that the air compressor can be normally used at low temperature, the shell 50 is made of a heat-insulating material shell 50.

In order to ensure the safety of electricity consumption, the motor 11, the inverter 30, and the gas-using device 20 are grounded via a ground line 60.

The embodiment of the invention also provides a method for discharging water at low temperature of the airplane, the air compressor using the onboard power supply is adopted, after the airplane stops, the onboard power supply system 40 supplies power to the air compressor, the tail end of the air outlet pipeline 12 of the air compressor is connected with the water tank of the airplane, and the air compressor is used for pressurizing and draining water.

By adopting the method for discharging water at low temperature of the airplane, when the external temperature is lower than 0 ℃, the air compressor is powered by the onboard power system 40 and performs pressurization and drainage on the water tank of the airplane, so that the pressure and safety protection required by water discharging work are provided for the airplane under the condition of not using the airplane APU bleed air system, and therefore, after the airplane is stopped, the aero-engine can be closed, the oil consumption is reduced, the cost is reduced, and the purposes of energy conservation and emission reduction are achieved.

The onboard power system 40 can be powered by an auxiliary power source of the aircraft and a ground onboard generator. Preferably, the onboard power system 40 is powered by a ground onboard generator, and is connected with the onboard power system 40 of the aircraft through a ground power supply, so that the oil consumption of the aircraft during the shutdown operation in winter is reduced, and the carbon dioxide emission is reduced, taking a narrow-body passenger aircraft as an example: 150KG of oil consumption is achieved when the equipment is not used and works every hour, only about 10L of oil consumption is needed every hour after the equipment is used, and carbon dioxide emission is effectively reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.