JP5738524B2 - 音響減衰システム及び方法 - Google Patents
音響減衰システム及び方法 Download PDFInfo
- Publication number
- JP5738524B2 JP5738524B2 JP2009225683A JP2009225683A JP5738524B2 JP 5738524 B2 JP5738524 B2 JP 5738524B2 JP 2009225683 A JP2009225683 A JP 2009225683A JP 2009225683 A JP2009225683 A JP 2009225683A JP 5738524 B2 JP5738524 B2 JP 5738524B2
- Authority
- JP
- Japan
- Prior art keywords
- sound
- wall
- perforated wall
- conduit
- openings
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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
- F02C7/24—Heat or noise insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- 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
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Exhaust Silencers (AREA)
Description
一般的に、そのような装置の挿入損失は、その装置の長さが増すにつれて増大する。さらに、許容空気流量を維持するために、装置の全断面積を拡大して、音響減衰要素によって生じる空気流れ抵抗を補償することができる。従って、騒音抑制装置は、嵩高かつ高価になりがちである。
12 機械
14 吸気口
16 換気吸入口
18 空気ダクト
20 空気取入れ口
22 換気排出口
24 排気筒
26 遮音ルーバ
28 騒音遮断パネル
30 空気ダクト
32 排気ダクト
34 エンクロージャ
36 バリヤ壁
38 騒音遮断換気フード
40 システム
42 ガスタービンエンジン
44 負荷
46 吸気セクション
48 圧縮機
50 燃焼器セクション
52 タービン
54 排気セクション
56 シャフト
58 燃焼器ハウジング
60 燃焼器
64 負荷
66 音波
68 導管
70 側壁
72 音の方向
74 空気の方向
76 開口部
77 音響減衰空洞
78 音響減衰材
80 壁厚さ
82 長さ
84 高さ
86 幅
88 バッフル
90 音が入る方向
92 シート
98 孔
100 突出部
102 音が入る方向
104 音波が繰り返し反射される方向
106 スラット
108 フレーム
Claims (8)
- タービンエンジン(42)と、
前記タービンエンジン(42)の上流又は下流で音波を受けるように配置された音響減衰装置(68)と
を備えるシステムであって、前記音響減衰装置(68)が、
音響減衰空洞(77)を有する中空壁(70)と、
前記中空壁(70)の音響減衰空洞(77)内に配置された音響減衰材(78)と、
前記中空壁(70)内への複数の開口部(76)であって、前記中空壁(70)内への音波の進入を可能にしかつ該中空壁(70)からの音波の離脱を実質的に遮断する突出部(100)に隣接して配置された開口部(76)と
を含んでおり、
前記突出部(100)が、前記中空壁(70)から音響減衰空洞(77)の内部に向かって内側に延びるテーパ状突出部であって、前記複数の開口部(76)間を通る直線経路を遮断するテーパ状突出部を含んでおり、
前記中空壁(70)が、その内部の前記音響減衰材(78)の周りで互いに対向する第1の有孔壁と第2の有孔壁とを有していて、第1の有孔壁が、該第1の有孔壁から音響減衰空洞(77)の内部に向かって内側に傾斜した複数の第1のテーパ状突出部を有する複数の第1の開口部を含んでおり、第2の有孔壁が、該第2の有孔壁から音響減衰空洞(77)の内部に向かって内側に傾斜した複数の第2のテーパ状突出部を有する複数の第2の開口部を含んでおり、前記複数の第1のテーパ状突出部と前記複数の第2のテーパ状突出部が、前記第1の有孔壁と第2の有孔壁の間で音波を繰返し反射する、システム。 - 前記中空壁(70)を有する導管を含み、前記複数の開口部(76)が前記導管の内面に沿って配置される、請求項1記載のシステム。
- 前記突出部(100)が、前記開口部(76)の一部を覆って、前記複数の開口部(76)間を通る直線経路を遮断する、請求項1記載のシステム。
- 前記開口部(76)及び突出部(100)が共同して、前記中空壁(70)の1以上の側面内に非平坦有孔パターンを形成する、請求項1記載のシステム。
- 前記突出部(100)が、前記中空壁(70)の1以上の側面に沿って連続した複数の傾斜スラット(106)を含み、前記開口部(76)が、前記傾斜スラット(106)間に配置される、請求項1記載のシステム。
- 音響減衰装置(68)
を備えるシステムであって、前記音響減衰装置(68)が、
非平坦パターンの開口部(76)を有する有孔壁(70)と、
前記有孔壁(70)に隣接した音響捕捉領域と、
音響減衰材(78)と
を含んでおり、前記有孔壁(70)が第1の有孔壁と第2の有孔壁とを有していて、
第1の有孔壁が、前記音響減衰材(78)の第1の側に沿って延びていて、前記音響減衰材(78)に向かって内側に傾斜した複数の第1のテーパ状突出部を有する複数の第1の開口部を含んでおり、
第2の有孔壁が、前記音響減衰材(78)の第1の側とは反対側の第2の側に沿って延びていて、前記音響減衰材(78)に向かって内側に傾斜した複数の第2のテーパ状突出部を有する複数の第2の開口部を含んでおり、
前記複数の第1のテーパ状突出部と前記複数の第2のテーパ状突出部が、前記第1の有孔壁と第2の有孔壁の間で音波を繰返し反射する、システム。 - 前記有孔壁(70)が、前記非平坦パターンの突出部(100)及び開口部(76)の両方を形成した複数の変形部分を有するシートを含む、請求項6記載のシステム。
- 前記非平坦パターンが、騒音源に向けて傾いた傾斜部分(100)を含む、請求項6記載のシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/243,923 US8459407B2 (en) | 2008-10-01 | 2008-10-01 | Sound attenuation systems and methods |
US12/243,923 | 2008-10-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010084768A JP2010084768A (ja) | 2010-04-15 |
JP5738524B2 true JP5738524B2 (ja) | 2015-06-24 |
Family
ID=41347869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009225683A Expired - Fee Related JP5738524B2 (ja) | 2008-10-01 | 2009-09-30 | 音響減衰システム及び方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8459407B2 (ja) |
EP (1) | EP2172623A2 (ja) |
JP (1) | JP5738524B2 (ja) |
CN (1) | CN101713335B (ja) |
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JP5972619B2 (ja) * | 2012-03-16 | 2016-08-17 | 三菱重工業株式会社 | 吸気ダクト |
KR101807783B1 (ko) * | 2012-06-18 | 2018-01-18 | 목포해양대학교 산학협력단 | 공명통을 이용한 선박 프로펠러용 방음 덕트 |
JP6057790B2 (ja) | 2013-03-15 | 2017-01-11 | 三菱重工業株式会社 | ガスタービン用サイレンサ、及びそれを備えたガスタービン |
JP5907916B2 (ja) * | 2013-03-15 | 2016-04-26 | 三菱重工業株式会社 | 排気装置 |
US9305539B2 (en) * | 2013-04-04 | 2016-04-05 | Trane International Inc. | Acoustic dispersing airflow passage |
US20150069763A1 (en) * | 2013-09-10 | 2015-03-12 | General Electric Company | Load cover |
EP2871636B1 (en) * | 2013-11-08 | 2021-01-06 | Volvo Car Corporation | Sound reduction system |
DE102014209323A1 (de) * | 2014-05-16 | 2015-11-19 | Mahle International Gmbh | Kunststoffbauteil |
US9290274B2 (en) * | 2014-06-02 | 2016-03-22 | Mra Systems, Inc. | Acoustically attenuating sandwich panel constructions |
CN106687674A (zh) * | 2014-09-03 | 2017-05-17 | 通用电气公司 | 用于涡轮系统的声处理组件 |
KR101637231B1 (ko) * | 2015-05-19 | 2016-07-07 | (주)성신엔스텍 | 선박용 가스터빈 소음 저감장치 |
US10577973B2 (en) | 2016-02-18 | 2020-03-03 | General Electric Company | Service tube for a turbine engine |
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-
2009
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- 2009-09-30 JP JP2009225683A patent/JP5738524B2/ja not_active Expired - Fee Related
- 2009-09-30 CN CN200910204755.2A patent/CN101713335B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20100077754A1 (en) | 2010-04-01 |
JP2010084768A (ja) | 2010-04-15 |
CN101713335B (zh) | 2014-11-19 |
US8459407B2 (en) | 2013-06-11 |
CN101713335A (zh) | 2010-05-26 |
EP2172623A2 (en) | 2010-04-07 |
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