WO2012155521A1 - Substrat pour papillon d'admission d'air et papillon d'admission d'air comprenant le substrat - Google Patents

Substrat pour papillon d'admission d'air et papillon d'admission d'air comprenant le substrat Download PDF

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Publication number
WO2012155521A1
WO2012155521A1 PCT/CN2011/085062 CN2011085062W WO2012155521A1 WO 2012155521 A1 WO2012155521 A1 WO 2012155521A1 CN 2011085062 W CN2011085062 W CN 2011085062W WO 2012155521 A1 WO2012155521 A1 WO 2012155521A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
intake
intake damper
air intake
damper
Prior art date
Application number
PCT/CN2011/085062
Other languages
English (en)
Chinese (zh)
Inventor
孙新波
唐力
唐宏刚
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
Publication of WO2012155521A1 publication Critical patent/WO2012155521A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/045—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for noise suppression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/28—Three-dimensional patterned
    • F05D2250/283—Three-dimensional patterned honeycomb
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Definitions

  • the present invention relates to a substrate for an APU intake damper. Furthermore, the invention also relates to an APU intake damper comprising the substrate. Background technique
  • the APU (Auxiliary Power Unit) intake system is primarily used to provide a source of air to the APU for combustion in its combustion chamber, thereby producing a power-driven APU.
  • the function of the intake damper is mainly to take the external air into the APU intake pipe through the punching action, and the effect and effect of the pressurization in the air are more obvious.
  • the APU intake system has higher noise and the frequency band is mainly high frequency noise.
  • the APU intake system noise reduction method on the existing aircraft mainly uses the APU intake line muffler.
  • the noise reduction level of this configuration directly depends on the arrangement of the APU intake line, and a better drop is required.
  • the intake line needs to be placed as long as possible.
  • this increases the weight of the APU intake system and increases the pressure loss of the piping, which affects the performance of the APU. Increasing the weight of the system is unacceptable to the aircraft.
  • the weight on the aircraft is subject to strict control requirements.
  • the pressure loss on the pipeline increases the impact on the performance of the APU.
  • the present invention proposes to perform the APU intake damper on the basis of not affecting the APU intake configuration, weight, performance and strength requirements.
  • the sound lining process reduces the reflection noise of the damper, thereby further reducing the noise level of the APU intake system.
  • the object of the present invention is to overcome the contradiction between the noise reduction level requirement of the conventional APU intake system and the weight of the intake system, and propose a sound lining-processed APU intake damper configuration.
  • the configuration is based on the traditional damper configuration, through the surface of the honeycomb structure of the damper Perforation or metal mesh structure is provided on the board, so that the traditional damper honeycomb structure (strength and weight considerations) can be used to reduce the reflection noise of the damper, further reducing the noise of the APU intake system, thereby achieving the basis of not changing the weight and strength of the system.
  • the noise level is further reduced, the noise index requirement is met, and the product competitiveness is improved.
  • the present invention provides a substrate for an intake damper having two opposite surfaces and a honeycomb structure between the two surfaces, the honeycomb structure having a plurality of micro chambers, One of the two surfaces is provided with a plurality of silencing holes respectively communicating with the microchamber.
  • the present invention also provides a substrate for an intake damper, the substrate having opposite surfaces and a honeycomb structure between the two surfaces, the honeycomb structure having a plurality of micro-chambers, the two surfaces A metal mesh structure is provided, and the metal mesh structure is provided with a plurality of meshes respectively communicating with the microchambers.
  • the present invention also provides an intake damper comprising a wall plate and the above-mentioned substrate, the substrate being fixed on the wall plate, the honeycomb structure having an opening away from the wall plate, that is, provided with silencer
  • the hole or surface having the metal mesh structure is away from the wall plate, and the honeycomb structure in the substrate can function as a reinforcing wall.
  • the substrate is provided with ribs extending in the airflow direction, and side plates of the wall plate are respectively provided with side plates extending in the airflow direction for guiding the airflow into the air intake system.
  • the substrate is fixed to the wall plate by an adhesive.
  • the wall panel is formed of a composite material or a metal material.
  • the present invention provides an intake damper which is formed by the above-described substrate for intake damper.
  • the APU air intake system with this configuration will at least reduce the noise of the APU intake system by 2-3 dB, which can reduce the overall noise level of the aircraft. At the same time, the system design can be reduced based on the reasonable positioning of the aircraft noise level. And manufacturing costs.
  • Figure 1 is a front elevational view of a portion of a substrate for an intake damper according to the present invention
  • Figure 2 is a cross-sectional view showing a portion of a substrate for an intake damper according to the present invention
  • Figure 3 is a perspective view of a preferred embodiment of an intake damper in accordance with the present invention
  • Figure 4 is a perspective view of an intake damper system in accordance with the present invention having an intake damper illustrated in Figure 3;
  • Figure 5 is a perspective view of another preferred embodiment of the intake damper according to the present invention
  • Figure 6 is a perspective view of the intake damper system according to the present invention having the intake damper shown in Figure 5;
  • FIG. 7 is a schematic diagram of the muffling of the intake damper in accordance with the present invention. detailed description
  • the substrate 10 for an intake damper of the present invention may be made of a metal material or a composite material having opposite surfaces or panels 11, 12, and a honeycomb structure 13 between the two surfaces 11, 12, the honeycomb structure There are a plurality of microchambers 14, wherein the surface 12 is provided with a plurality of silencing holes 15 respectively communicating with the microchambers 14 of the honeycomb structure 13, preferably the number of silencing holes 15 and the number of microchambers 14. The same, that is, one silencing hole 15 communicates with a microchamber 14.
  • the surface 12 acts as a smooth gas stream to avoid causing the honeycomb structure 13 to affect the flow field of the gas stream.
  • the silencing holes 15 are the same size and uniformly arranged, and the distance between adjacent holes is the same.
  • the size of the sound absorbing holes 15 may be different depending on the specific situation, and the distance between adjacent holes may also be different.
  • the shapes of the holes may be different, and may be circular, elliptical or other shapes.
  • the surface 12 has a metal mesh structure having a plurality of meshes that communicate with the microchambers 14 on the honeycomb structure 13, respectively.
  • the number of cells is the same as the number of the chambers 14, i.e., one mesh is in communication with a four-opening chamber 14.
  • FIGs 3 and 4 a preferred embodiment of the intake damper 20 of the present invention, and an intake system 30 including the intake damper 20 is illustrated.
  • the intake damper 20 includes a wall panel 21 and a base plate 22.
  • the wall panel 21 may be composed of a thin-walled solid material composed of a known composite material or metal structure.
  • the substrate 22 is secured to the wall panel 21 by an adhesive or other known means.
  • the substrate 22 has the same structure as the substrate 10, and the surface of the sound-dissipating hole (metal mesh structure) is away from the wall plate 21, and the honeycomb structure in the substrate can function as a reinforcing wall.
  • the side plates 23 of the wall panel 21 are respectively provided with side plates 23 extending in the airflow direction, and/or the substrate 22 may be provided with one or more ribs 24 extending in the airflow direction, mainly for supporting or guiding the airflow to smoothly enter.
  • the intake damper 40 includes two side panels 41, 42 and an upper panel 43, an intermediate panel 44 and a lower panel 45 which may be joined together by any known means. When installed on the intake system 50, the intake system 50 is closed by rotating the intake damper 40.
  • the upper plate 43 and the intermediate plate 44 have the same structure as the substrate 10 for the intake damper, and of course, the lower plate 45 may have the same structure.
  • the invention adopts the arrangement of the honeycomb structure and the silencing hole, so that the entire intake damper becomes the sound lining structure, which not only functions to strengthen the damper but also adds the function of silencing.
  • the treated damper configuration can maximize the advantages in noise reduction.
  • FIG. 7 shows the muffling principle of the present invention.
  • the APU intake system noise is incident on the acoustic lining-treated APU intake damper 20
  • a part of the noise is consumed by the sound lining structure of the APU intake damper 20 through the cavity resonance, thereby further reducing the noise level of the APU intake system.
  • the hole-punching rate of the muffling hole or the metal mesh structure and the size of the perforation hole it is necessary to reasonably set the hole spacing, the aperture and the selected honeycomb structure according to the muffling characteristics of the Helmholtz resonance cavity or the theory of the quarter-wavelength and the characteristics of the sound source.
  • the thickness is such that the muffling frequency of the Helmholtz or quarter-wave tube is consistent with the desired frequency, thereby achieving the purpose of reducing noise.
  • the honeycomb structure panel is set as a perforated structure or a metal mesh structure, the honeycomb structure already existing in the intake damper structure can be utilized for sound elimination purposes, thereby reducing noise. It should be noted that the configuration, size and position of the muffler holes need to be properly placed during the design process to prevent the presence of fluid in the honeycomb structure.
  • the conventional damper configuration adopts a honeycomb structure to reduce the weight of the damper under the condition of ensuring the strength, but the function of the anechoic is never considered; and the present invention happens to be a function of the muffling function of the honeycomb structure using the conventional damper structure.
  • the conventional damper configuration has both the sound absorbing function and the lightest weight. It is intended to define the scope of the invention. That is, equivalent changes and modifications made by the content of the patent application scope of the present invention fall within the protection scope of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)
  • Exhaust Silencers (AREA)

Abstract

L'invention concerne un substrat (10) pour un papillon d'admission d'air. Le substrat (10) comprend deux surfaces (11, 12) opposées l'une à l'autre et une structure en nid d'abeille (13) située entre les deux surfaces (11, 12). La structure en nid d'abeille (13) comprend de multiples micro-chambres (14). De multiples trous de réduction du bruit (15) respectivement en communication avec les micro-chambres (14) sont disposés sur l'une (12) des deux surfaces (11, 12). L'invention concerne en outre un papillon d'admission d'air (40). Le substrat pour un papillon d'admission d'air et le papillon d'admission d'air permettent de réduire efficacement le niveau de bruit d'un système d'admission d'air sur la base d'une modification non excessive du poids et de la résistance du papillon d'admission d'air.
PCT/CN2011/085062 2011-05-13 2011-12-30 Substrat pour papillon d'admission d'air et papillon d'admission d'air comprenant le substrat WO2012155521A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110124610.9 2011-05-13
CN201110124610.9A CN102777261B (zh) 2011-05-13 2011-05-13 进气风门用基板以及包括该基板的进气风门

Publications (1)

Publication Number Publication Date
WO2012155521A1 true WO2012155521A1 (fr) 2012-11-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/085062 WO2012155521A1 (fr) 2011-05-13 2011-12-30 Substrat pour papillon d'admission d'air et papillon d'admission d'air comprenant le substrat

Country Status (2)

Country Link
CN (1) CN102777261B (fr)
WO (1) WO2012155521A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9145214B2 (en) 2013-10-25 2015-09-29 Honeywell International Inc. Auxiliary power unit inlet door having openings formed therein
WO2017001246A1 (fr) 2015-07-02 2017-01-05 Nass & Wind Industrie Plate-forme flottante destinee a supporter une tour d'eolienne et eolienne comprenant une tour assemblee a la plate-forme

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9611050B2 (en) 2013-07-26 2017-04-04 The Boeing Company Auxiliary power unit inlet apparatus and methods
CN105201653B (zh) * 2015-09-10 2017-03-29 中国商用飞机有限责任公司 辅助动力装置进气系统的进气风门的作动机构
FR3065473B1 (fr) * 2017-04-25 2019-04-19 Airbus Operations Panneau pour le traitement acoustique comprenant des alveoles contenant chacune une pluralite de conduits
CN107893778B (zh) * 2017-10-16 2020-02-11 中国商用飞机有限责任公司 一种风扇进气入口装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3821999A (en) * 1972-09-05 1974-07-02 Mc Donnell Douglas Corp Acoustic liner
US4828932A (en) * 1986-05-12 1989-05-09 Unix Corporation Ltd. Porous metallic material, porous structural material and porous decorative sound absorbing material, and methods for manufacturing the same
GB2296306A (en) * 1994-12-05 1996-06-26 Short Brothers Plc Reducing drag by boundary layer control
US6439340B1 (en) * 2000-11-17 2002-08-27 Astech Manufacturing, Inc. Acoustically treated structurally reinforced sound absorbing panel
US20070272483A1 (en) * 2006-05-26 2007-11-29 Morin Bruce L Micro-perforated acoustic liner
CN101675226A (zh) * 2007-04-30 2010-03-17 法国空中巴士公司 消音特性可变的消音板

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008007469A1 (de) * 2008-02-04 2009-08-06 Airbus Deutschland Gmbh Verlängerungsteil für eine Einlaufklappe, Einlaufklappe mit einem solchen Verlängerungsteil und Triebwerk mit einer Einlaufklappe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3821999A (en) * 1972-09-05 1974-07-02 Mc Donnell Douglas Corp Acoustic liner
US4828932A (en) * 1986-05-12 1989-05-09 Unix Corporation Ltd. Porous metallic material, porous structural material and porous decorative sound absorbing material, and methods for manufacturing the same
GB2296306A (en) * 1994-12-05 1996-06-26 Short Brothers Plc Reducing drag by boundary layer control
US6439340B1 (en) * 2000-11-17 2002-08-27 Astech Manufacturing, Inc. Acoustically treated structurally reinforced sound absorbing panel
US20070272483A1 (en) * 2006-05-26 2007-11-29 Morin Bruce L Micro-perforated acoustic liner
CN101675226A (zh) * 2007-04-30 2010-03-17 法国空中巴士公司 消音特性可变的消音板

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9145214B2 (en) 2013-10-25 2015-09-29 Honeywell International Inc. Auxiliary power unit inlet door having openings formed therein
WO2017001246A1 (fr) 2015-07-02 2017-01-05 Nass & Wind Industrie Plate-forme flottante destinee a supporter une tour d'eolienne et eolienne comprenant une tour assemblee a la plate-forme

Also Published As

Publication number Publication date
CN102777261A (zh) 2012-11-14
CN102777261B (zh) 2016-02-10

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