JP5098169B2 - キャビテーション気泡衝撃圧検出装置 - Google Patents
キャビテーション気泡衝撃圧検出装置 Download PDFInfo
- Publication number
- JP5098169B2 JP5098169B2 JP2005368988A JP2005368988A JP5098169B2 JP 5098169 B2 JP5098169 B2 JP 5098169B2 JP 2005368988 A JP2005368988 A JP 2005368988A JP 2005368988 A JP2005368988 A JP 2005368988A JP 5098169 B2 JP5098169 B2 JP 5098169B2
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- JP
- Japan
- Prior art keywords
- vibration acceleration
- cavitation
- impact pressure
- cavitation bubble
- bubble impact
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
Description
Claims (2)
- 作動流体中でキャビテーションが生じる機器に取付けられた複数の振動加速度センサと、これらの各振動加速度センサの出力信号を増幅するアンプと、前記アンプの出力信号を高速サンプリングするA/D変換器と、このA/D変換器から出力される振動加速度の波形を高速フーリエ変換して特定の周波数帯域をフィルタリングして振動加速度のオーバーオール値を算出する高速フーリエ変換器と、この高速フーリエ変換器から出力される振動加速度のオーバーオール値を記録するコンピュータと、このコンピュータ内で記録された振動加速度のオーバーオール値からキャビテーション気泡衝撃圧を抽出するデータ処理手段とを備え、
前記データ処理手段は、キャビテーション発生位置から各振動加速度センサ位置まで伝播する圧力波の減衰率や異種媒質界面での透過率,センサ設置部の壁厚さと密度等を考慮して算出される所定の抵抗係数を用い、計測された複数の振動加速度オーバーオール値を最小自乗近似処理することによりキャビテーション気泡衝撃圧を抽出することを特徴とするキャビテーション気泡衝撃圧検出装置。 - 請求項1に記載のキャビテーション気泡衝撃圧検出装置において、
前記複数の振動加速度センサの個数は3個以上であることを特徴とするキャビテーション気泡衝撃圧検出装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005368988A JP5098169B2 (ja) | 2005-12-22 | 2005-12-22 | キャビテーション気泡衝撃圧検出装置 |
Applications Claiming Priority (1)
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JP2005368988A JP5098169B2 (ja) | 2005-12-22 | 2005-12-22 | キャビテーション気泡衝撃圧検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007170981A JP2007170981A (ja) | 2007-07-05 |
JP5098169B2 true JP5098169B2 (ja) | 2012-12-12 |
Family
ID=38297738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2005368988A Expired - Fee Related JP5098169B2 (ja) | 2005-12-22 | 2005-12-22 | キャビテーション気泡衝撃圧検出装置 |
Country Status (1)
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JP (1) | JP5098169B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011157894A (ja) * | 2010-02-02 | 2011-08-18 | Hitachi Plant Technologies Ltd | キャビテーション壊食量予測方法及び予測装置 |
CN114813037B (zh) * | 2022-04-21 | 2023-06-20 | 中国船舶科学研究中心 | 一种空化流动结构频率分布特征分析方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61244896A (ja) * | 1985-04-19 | 1986-10-31 | Shipbuild Res Assoc Japan | 遠心ポンプのキヤビテ−シヨン回避装置 |
JPH04235319A (ja) * | 1991-01-10 | 1992-08-24 | Oki Electric Ind Co Ltd | キャビテーション雑音検出装置 |
JP3046426B2 (ja) * | 1991-11-19 | 2000-05-29 | 株式会社東芝 | プラント機器の監視装置 |
JP2639353B2 (ja) * | 1994-08-05 | 1997-08-13 | 日本電気株式会社 | 音響信号検出装置 |
US5974887A (en) * | 1997-09-26 | 1999-11-02 | Exxon Research And Engineering Co. | Method for determining operating status of liquid phase gas-phase interaction columns |
JP3492517B2 (ja) * | 1998-04-01 | 2004-02-03 | 株式会社荏原製作所 | キャビテーションセンサ及び壊食量評価システム |
JP2000337288A (ja) * | 1999-05-24 | 2000-12-05 | Hitachi Ltd | キャビテーション検出方法 |
JP2006300640A (ja) * | 2005-04-19 | 2006-11-02 | Sugino Mach Ltd | キャビテーション検出方法 |
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2005
- 2005-12-22 JP JP2005368988A patent/JP5098169B2/ja not_active Expired - Fee Related
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