WO2021092819A1 - Système de préparation d'air - Google Patents

Système de préparation d'air Download PDF

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Publication number
WO2021092819A1
WO2021092819A1 PCT/CN2019/118292 CN2019118292W WO2021092819A1 WO 2021092819 A1 WO2021092819 A1 WO 2021092819A1 CN 2019118292 W CN2019118292 W CN 2019118292W WO 2021092819 A1 WO2021092819 A1 WO 2021092819A1
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WO
WIPO (PCT)
Prior art keywords
air
compression device
preparation system
main refrigeration
sensor
Prior art date
Application number
PCT/CN2019/118292
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English (en)
Chinese (zh)
Inventor
彭丹祺
王磊
黄晓聃
蒋亮亮
杜楠楠
陈彬
Original Assignee
中国商用飞机有限责任公司
中国商用飞机有限责任公司上海飞机设计研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国商用飞机有限责任公司, 中国商用飞机有限责任公司上海飞机设计研究院 filed Critical 中国商用飞机有限责任公司
Priority to PCT/CN2019/118292 priority Critical patent/WO2021092819A1/fr
Publication of WO2021092819A1 publication Critical patent/WO2021092819A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • B64D13/02—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being pressurised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned

Definitions

  • the invention relates to an aircraft air preparation system, in particular, the invention belongs to the field of aircraft inerting system design.
  • the air preparation system of civil aircraft is a subsystem of the onboard nitrogen production system in the fuel inerting system.
  • the air preparation system processes the bleed air (including air) from the air source system and adjusts it to be suitable for the fuel inerting system. status.
  • the air preparation system of an existing aircraft generally consists of components such as a pressure regulating valve, a heat exchanger, a temperature control valve, a pressure sensor, a temperature sensor, and a controller.
  • the air preparation system in the prior art often uses compressed air as an energy source to power the air preparation system.
  • the traditional heat exchanger needs ram air (it also needs to be drawn by a fan when it is on the ground) as the cold edge gas to adjust the temperature of the bleed air, and it needs to open on the aircraft body.
  • the bleed air pressure from the air supply system is low, which cannot meet the working requirements of the inerting system. If an air turbo compressor is used, additional bleed air is required to drive the turbine to perform work, thereby increasing engine bleed air and fuel consumption.
  • the present invention is made in order to solve the above technical problems, and aims to reduce the system bleed air flow rate and installation space and weight.
  • An air preparation system includes: an air inlet, an air outlet, a compression device and a main refrigeration device, wherein:
  • the air inlet is used to introduce air into the air preparation system
  • the air outlet is used to send the air processed by the air preparation system out of the air preparation system
  • the compression device is arranged between the air inlet and the air outlet and is in fluid communication with the air inlet and the air outlet, and the compression device pressurizes the air flowing through the compression device,
  • the main refrigeration device is arranged between the compression device and the air outlet and is in fluid communication with the compression device and the air outlet, and the main refrigeration device reduces the temperature of the air flowing through the main refrigeration device,
  • the compression device is a compression device powered by electricity
  • the main refrigeration device is a heat exchange element powered by electricity.
  • the electric-powered compression device is used for pressurization and the electric-powered heat exchange element is used for temperature adjustment, which can reduce the system bleed air flow and the system installation space and weight.
  • the main refrigeration device is a semiconductor refrigeration fin, and the cold side of the semiconductor refrigeration fin is in contact with the air flowing through the main refrigeration device.
  • the semiconductor refrigeration chip is a current-transducer type chip, which can realize high-precision temperature control through the control of the input current and the monitoring of the downstream temperature sensor.
  • the use of semiconductor refrigeration fins avoids the defects of traditional heat exchangers, does not require ram air and fans, can avoid the impact of openings on the aerodynamic performance of the aircraft, and can further reduce system installation space and system weight.
  • the compression device is an on-board electric compressor, and the on-board electric compressor supercharges the air flowing through the compression device by electric energy.
  • the advantage of using an onboard electric compressor to pressurize the bleed air is at least that it does not require additional bleed air from the air supply system, which reduces the consumption of bleed air.
  • the air preparation system of the present invention further includes a pre-cooling device, wherein:
  • the pre-cooling device is a heat exchange element powered by electricity
  • the pre-refrigeration device is arranged between the air inlet and the compression device and is in fluid communication with the air inlet and the compression device,
  • the pre-cooling device reduces the temperature of the air flowing through the pre-cooling device.
  • the setting of the pre-refrigeration device can pre-adjust the temperature of the air entering the compression device according to actual needs, so that the compression effect of the compression device is more ideal.
  • the pre-cooling device is a semiconductor cooling fin, and the cold side of the semiconductor cooling fin is in contact with the air flowing through the pre-cooling device.
  • the semiconductor refrigeration chip is a current-transducer type chip, which can realize high-precision temperature control through the control of the input current and the monitoring of the downstream temperature sensor.
  • the use of semiconductor refrigeration fins avoids the defects of traditional heat exchangers, does not require ram air and fans, can avoid the impact of openings on the aerodynamic performance of the aircraft, and can further reduce system installation space and system weight.
  • an anti-surge valve is arranged upstream of the compression device, and a feedback loop connected to the anti-surge valve is arranged downstream of the compression device, and the feedback loop will leave The air of the compression device is fed back to the anti-surge valve.
  • the setting of the anti-surge valve and its coordinated feedback loop helps to avoid the reflux of the compressed high-pressure gas and the surge of the compressor.
  • a temperature control valve is arranged downstream of the compression device and upstream of the main refrigeration device, and the temperature control valve is in communication with a bypass branch. It bypasses the main refrigeration device and communicates to the downstream of the main refrigeration device.
  • the temperature control bypass branch By adding the temperature control bypass branch, the temperature control accuracy is improved. Especially in the high-altitude cruise stage, the temperature of the outside atmosphere is low, and the bleed air flow required for fuel inerting is small, which easily causes the system outlet temperature to be too low.
  • the technical solution of the present invention adds a temperature control bypass branch, so that the opening of the temperature control valve can be adjusted according to the system outlet temperature.
  • the hot air in the bypass branch is appropriately mixed with the gas cooled by the main refrigeration device before being supplied.
  • the fuel inerting system prevents the pilot temperature from being too low and affecting the performance of the fuel inerting system.
  • the air preparation system includes a control system, wherein:
  • the control system includes a controller for controlling the air state in the air preparation system,
  • the control system further includes a first sensor arranged downstream of the compression device for monitoring the state of the air leaving the compression device, the first sensor sending the detected signal to the controller,
  • the control system further includes a second sensor arranged downstream of the main refrigeration device for monitoring the state of the air leaving the main refrigeration device, and the second sensor sends the detected signal to the controller.
  • the sensor downstream of the compressor monitors the bleed air status at the compressor outlet, the sensor at the outlet of the air preparation system (downstream of the main refrigeration device) and the bleed air status at the outlet of the monitoring system prevent high temperature or high pressure gas from affecting the downstream system.
  • the controller is configured to control the compression device and/or the main refrigeration device according to the signal sent by the first sensor and/or the second sensor.
  • the running status is controlled.
  • Controlling the air preparation system based on the detected air state can greatly help to obtain air with desired characteristics.
  • the first sensor and the second sensor include a temperature sensor and/or a pressure sensor.
  • the pressure sensor and/or temperature sensor downstream of the compressor monitors the bleed air pressure and temperature at the compressor outlet, so as to provide the control system with accurate bleed air pressure and temperature data at that location.
  • the pressure sensor and/or temperature sensor at the outlet of the air preparation system (downstream of the main refrigeration device) monitors the bleed air pressure and temperature at the system outlet, so as to provide the control system with accurate bleed air pressure and temperature data at that location.
  • the beneficial effects of the air preparation system according to the present invention are at least as follows:
  • Fig. 1 is a schematic diagram of a preferred embodiment of an air preparation system according to the present invention.
  • Fig. 1 shows a schematic diagram of an air preparation system 100 according to a preferred embodiment of the present invention.
  • the air preparation system 100 includes: an air inlet 110, an air outlet 120, a compression device 130 and a main refrigeration device 140. These components and their advantageous embodiments are described below.
  • the air inlet 110 is used to introduce air into the air preparation system 100.
  • the air inlet 110 may be the outlet of a previous system, such as an air source system.
  • the air of the air preparation system 100 can be supplied by an air source.
  • the air inlet 110 may include a flow regulating valve 111, which is located upstream of the air preparation system 100.
  • the flow regulating valve 111 is used to adjust the flow and pressure of the air entering the air preparation system, that is, to adjust the bleed air pressure, and can be used to open or close the air inlet 110, that is, to open or close the air preparation system.
  • the air outlet 120 is used to send the air processed by the air preparation system 100 out of the air preparation system 100.
  • the air outlet 120 can be directly connected to the next system, such as an inerting system.
  • the compression device 130 is arranged between the air inlet 110 and the air outlet 120 and is in fluid communication with the air inlet 110 and the air outlet 120.
  • the compression device 130 pressurizes the air flowing through the compression device 130.
  • the compression device 130 is a compression device powered by electricity.
  • the energy used for compression of the compression device 130 is supplied by the power source.
  • the power source may be an on-board generator, for example.
  • the compression device 130 may be configured as an onboard electric compressor, and the onboard electric compressor pressurizes the air flowing through the compression device 130 with electric energy.
  • an anti-surge valve 160 may be arranged upstream of the compression device 130, and a feedback loop 170 connected to the anti-surge valve 160 may be arranged downstream of the compression device 130.
  • the feedback loop 170 can be used to feed back the air leaving the compression device 130 to the anti-surge valve 160.
  • the compression device 130 for example, an electric compressor
  • the bleed air can be directly adjusted by the main refrigeration device 140 described below to enter the inerting system.
  • the main refrigeration device 140 is arranged between the compression device 130 and the air outlet 120 and is in fluid communication with the compression device 130 and the air outlet 120, and the main refrigeration device 140 reduces the temperature of the air flowing through the main refrigeration device 140.
  • the main refrigeration device 140 is a heat exchange element powered by electricity.
  • the cooling energy of the main cooling device 140 is supplied by the power source.
  • the power source may be an on-board generator, for example.
  • the main refrigeration device 140 may be configured as a peltier fin, and the cold side of the pelmet is in contact with the air flowing through the main refrigeration device 140.
  • the main refrigeration device 140 may include one or more semiconductor refrigeration fins, for example.
  • the semiconductor refrigeration fins may preferably be arranged around the air flow channel in the main refrigeration device 140 so as to better cool the air flowing through the main refrigeration device 140.
  • a temperature control valve 180 may be arranged downstream of the compression device 130 and upstream of the main refrigeration device 140.
  • the temperature control valve 180 may communicate with the bypass branch 190.
  • the bypass branch 190 can bypass the main refrigeration device 140 and communicate to the downstream of the main refrigeration device 140.
  • the bypass branch 190 may also be provided with a flow adjustment device 191 to adjust the flow rate through the bypass branch 190.
  • the air preparation system of the present invention may further include a pre-refrigeration device 150.
  • the pre-cooling device 150 may be arranged between the air inlet 110 and the compression device 130 and in fluid communication with the air inlet 110 and the compression device 130.
  • the pre-cooling device 150 reduces the temperature of the air flowing through the pre-cooling device 150.
  • the bleed air is cooled by the pre-refrigeration device 150 before flowing through the compression device 130 and then enters the compression device 130 to be pressurized.
  • the pre-cooling device 150 may preferably adopt an electrically-powered heat exchange element similar to that of the main cooling device 140.
  • the pre-cooling device 150 may also be a peltier, and the cold side of the peltier is in contact with the air flowing through the pre-cooling device 150. Since the cooling requirements of the pre-cooling device 150 are often not as large as the main cooling device 140, the cooling effect and installation scale of the cooling fins of the pre-cooling device 150 may be smaller than that of the main cooling device 140.
  • the air preparation system 100 may include a control system 200.
  • the control system 200 may include a controller 210.
  • the control system 200 may further include a first sensor 220 and a second sensor 230.
  • the controller 210 may be connected with one or more of all the components in the air preparation system 100 to control them.
  • the controller 210 can control the flow regulating valve 111, the pre-cooling device 150, the anti-surge valve 160, the compression device 130, the first sensor 220, the temperature control valve 180, the main refrigeration device 140, and the second sensor 230.
  • the controller 210 may communicate with the above-mentioned components through common technical means in the art, so as to realize the transmission of corresponding control signals.
  • the above-mentioned first sensor 220 is arranged downstream of the compression device 130 and is used to monitor the state of the air leaving the compression device 130. As described above, the first sensor 220 may send the detected signal to the controller 210 for the controller 210 to control the compression device 130 and/or the anti-surge valve 160 according to the signal.
  • the first sensor 220 may include, for example, a temperature sensor and/or a pressure sensor. The temperature sensor and the pressure sensor can monitor the temperature and pressure of the bleed air leaving the compression device 130.
  • the above-mentioned second sensor 230 is arranged downstream of the main refrigeration device 140 and is used to monitor the state of the air leaving the main refrigeration device 140. As described above, the second sensor 230 may send the detected signal to the controller 210 for the controller 210 to control the main refrigeration device 140 and/or the temperature control valve 180 according to the signal.
  • the second sensor 230 may include, for example, a temperature sensor and/or a pressure sensor. The temperature sensor and the pressure sensor can monitor the temperature and pressure of the bleed air leaving the main refrigeration device 140.
  • control system 200 may be configured to: when the bleed air pressure from the air inlet area 110 (for example, the air source) is too low, the controller 210 of the air preparation system 100 follows the downstream of the main refrigeration device 140 (for example, the main semiconductor refrigeration fin)
  • the value of the sensor 230 (for example, a pressure sensor) drives the compression device 130 (for example, an on-board electric compressor) to work.
  • the pressurized gas enters the inerting system after the temperature is adjusted by the main semiconductor refrigeration film and the temperature control valve.
  • control system 200 can perform various controls on the air preparation system 100 by monitoring other signals, which will not be repeated here.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Compressor (AREA)

Abstract

La présente invention concerne un système de préparation d'air (100), comprenant une entrée d'air (110), une sortie d'air (120), un dispositif de compression (130) et un dispositif de réfrigération principal (140), le dispositif de compression (130) étant disposé entre l'entrée d'air (110) et la sortie d'air (120) et étant en communication fluidique avec l'entrée d'air (110) et la sortie d'air (120), le dispositif de compression (130) mettant sous pression l'air s'écoulant à travers le dispositif de compression (130), le dispositif de réfrigération principal (140) étant disposé entre le dispositif de compression (130) et la sortie d'air (120) et étant en communication fluidique avec le dispositif de compression (130) et la sortie d'air (120), le dispositif de réfrigération principal (140) réduisant la température de l'air s'écoulant à travers le dispositif de réfrigération principal (140), le dispositif de compression (130) étant un dispositif de compression à alimentation électrique (130), et le dispositif de réfrigération principal (140) étant un élément d'échange de chaleur à alimentation électrique. Le système de préparation d'air (100) peut réduire un flux d'air de prélèvement, l'espace d'installation et le poids du système.
PCT/CN2019/118292 2019-11-14 2019-11-14 Système de préparation d'air WO2021092819A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/118292 WO2021092819A1 (fr) 2019-11-14 2019-11-14 Système de préparation d'air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/118292 WO2021092819A1 (fr) 2019-11-14 2019-11-14 Système de préparation d'air

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WO2021092819A1 true WO2021092819A1 (fr) 2021-05-20

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1445428A1 (fr) * 2003-01-21 2004-08-11 Hamilton Sundstrand Corporation Turbocompresseur avec palier aérostatique et une soupape automatique de fermeture du débit d'air
CN101108655A (zh) * 2002-10-22 2008-01-23 波音公司 用于飞机的电动辅助动力系统结构
CN205316736U (zh) * 2015-12-25 2016-06-15 广州亿航智能技术有限公司 多轴载人飞行器
CN205440884U (zh) * 2015-12-25 2016-08-10 广州亿航智能技术有限公司 多轴载人飞行器
CN106240830A (zh) * 2015-06-09 2016-12-21 哈米尔顿森德斯特兰德公司 用于飞机的燃料箱惰化设备
CN109367791A (zh) * 2018-10-18 2019-02-22 中国航空工业集团公司金城南京机电液压工程研究中心 一种多电飞机电动环境控制系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101108655A (zh) * 2002-10-22 2008-01-23 波音公司 用于飞机的电动辅助动力系统结构
EP1445428A1 (fr) * 2003-01-21 2004-08-11 Hamilton Sundstrand Corporation Turbocompresseur avec palier aérostatique et une soupape automatique de fermeture du débit d'air
CN106240830A (zh) * 2015-06-09 2016-12-21 哈米尔顿森德斯特兰德公司 用于飞机的燃料箱惰化设备
CN205316736U (zh) * 2015-12-25 2016-06-15 广州亿航智能技术有限公司 多轴载人飞行器
CN205440884U (zh) * 2015-12-25 2016-08-10 广州亿航智能技术有限公司 多轴载人飞行器
CN109367791A (zh) * 2018-10-18 2019-02-22 中国航空工业集团公司金城南京机电液压工程研究中心 一种多电飞机电动环境控制系统

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