JP2007047180A - 超音波行路バンドル及びシステム - Google Patents
超音波行路バンドル及びシステム Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2462—Probes with waveguides, e.g. SAW devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/227—Details, e.g. general constructional or apparatus details related to high pressure, tension or stress conditions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/228—Details, e.g. general constructional or apparatus details related to high temperature conditions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/24—Methods or devices for transmitting, conducting or directing sound for conducting sound through solid bodies, e.g. wires
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/021—Gases
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02836—Flow rate, liquid level
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- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02872—Pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0422—Shear waves, transverse waves, horizontally polarised waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/262—Linear objects
- G01N2291/2626—Wires, bars, rods
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- Engineering & Computer Science (AREA)
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
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Abstract
【解決手段】複数のロッドから成る剛性のバンドルで、過酷な環境において使用可能であり、広いバンド帯域において作動できる実質上非分散性のバッファを形成する。広範囲の圧力、温度及び流量にわたって気体の流れを測定するに適した好ましい一形態において、本発明のバンドルは、1インチ直径のチューブ内に密に充填された約1000本のステンレス鋼溶接ロッドから作製される。第1のバンドルと整列する第2のバッファバンドルがフランジの他端に圧力結合されうる。気体から離れた第1のバンドル中に送信された超音波パルスはほとんど損失なく、また歪みなく気体に送信され、同時にトランスジューサは第2バンドルにより熱的に隔離されそしてほぼ周囲温度を維持している。
【選択図】図1
Description
(i)例えば、特許文献1に記載されるような縦波ではなく剪断波の使用、及び
(ii)例えば、特許文献2に記載されるような外側部分が芯部より高い音速を有するバッファロッドの使用を挙げることができる。
(ここで、aはロッドの直径であり、そしてπはロッド材料のポアソン比である。)
においてロッドに沿って下流に伝わる。
であるように調整することができる。
a)すべてのトランスジューサが導管の一方側にあるような直径を外れた弦のV字形行路を備える多行路流れ測定器、
b)上流(U)乃至下流(D)調査のためのトランスジューサが合致することもある共通のフランジ面において設置される流れ測定器、
c)流体における放射されたビームのパターン及び方向が不均一に分布されたロッドから成るバンドルに印加される周波数を変更することにより制御される測定システム。
クロス相関関数f(τ,T)=∫h(t)[g(t−τ−T)−g(t−τ)]dtはT=T0のときその最大に達する。
D(τ)=∫[SUP(t)−SDN(t+τ)]2dtであり、これはτ=T0のとき最大に達する。
2 バンドルバッファの端部
3 バンドルバッファ
5 複数のロッド
6 バンドルスリーブ
7 ナット
8 フランジ
8a ウエブ
9 バンドルバッファ
11 1/4波長インピーダンス整合器
12 中間層
13 リンク要素
18 パイププラグ
20 測定媒体
25 収納構造体
29 発信面
30 45度反射体
31 スロット
32 延長胴部
33 ねじ
34 固定ねじ
40 バンドル組立体
40a 充填金属
41 バンドル端
43 仮想充填線
45 凹所
46 端面
50 フランジ
60 測定システム
61 ワイヤ
62 スプールピース
63 ノズル
151 中空管
195 鼻部片
601 シリンダ
603 外側スリーブ
604 内部円錐体
Claims (10)
- トランスジューサと測定環境との間で少なくとも部分的に超音波信号を導通するための信号行路におけるリンクとして介在される信号導体を備える超音波システムであって、前記信号導体が:
各々第1端、第2端、及び定義された長さを有し、前記第1端と第2端の間で信号を分散の無い状態で伝搬するに有効な直径を有する複数のロッド;及び、
前記信号の定義及び結合を向上または増進するために前記複数のロッドの実質的に全ての第1端を連続的な結合面として接合するバンドル端を備え、
前記トランスジューサを破壊的な熱的、化学的、またはその他の物理的条件から隔絶するために、前記ロッドと前記バンドル端が、前記トランスジューサを前記測定環境から物理的に離間する行路リンクとしてトランスジューサ信号行路内に取り付けられる、前記信号を前記バンドル端を通して前記測定環境に分散無く導通かつ結合するための剛性化かつ密閉化された組立体を形成する、向上した信号行路を備える超音波システム。 - 前記バンドル端が1/4波長プレートを含む、請求項1に記載の超音波システム。
- 前記信号導体がさらに、前記ロッドの一端に結合される少なくとも一つのトランスジューサを含む、請求項2に記載の超音波システム。
- 前記トランスジューサが{nf}(ここでn=1、3、...(奇数の整数))により実質上与えられる複数の周波数において動作可能であり、そして前記1/4波長プレートが周波数fの波に対する1/4波長プレートである、請求項3に記載の超音波システム。
- 前記バンドル端が、該バンドル端においてロッドにおける圧縮エネルギーを撓みエネルギーにモード変換するために、通常の入射において前記複数のロッドに結合される面を含んでいる、請求項1に記載の超音波システム。
- 前記バンドル端が沈みぐりされた充填溶接部を含んでいる、請求項1に記載の超音波システム。
- 前記複数のロッドがシェル内に包納かつ充填されている、請求項1に記載の超音波システム。
- 前記シェルを構造的に支持するためにロッド間にスペーサをさらに含んでいる、請求項7に記載の超音波システム。
- 前記複数のロッドが異なった直径を有し、そして、音響エネルギーの送信を異なって遅延させ、特定の形状の、または偏向された出力ビームを発信するために規則だったパターンで配列されている、請求項1に記載の超音波システム。
- 前記シェルがロッドの直径より大きな厚さを有する、請求項7に記載の超音波システム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US47776195A | 1995-06-07 | 1995-06-07 | |
US08/477,761 | 1995-06-07 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9501623A Division JPH11507723A (ja) | 1995-06-07 | 1996-06-06 | 超音波行路バンドル及びシステム |
Publications (2)
Publication Number | Publication Date |
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JP2007047180A true JP2007047180A (ja) | 2007-02-22 |
JP4688762B2 JP4688762B2 (ja) | 2011-05-25 |
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ID=23897259
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9501623A Pending JPH11507723A (ja) | 1995-06-07 | 1996-06-06 | 超音波行路バンドル及びシステム |
JP2006249919A Expired - Fee Related JP4688762B2 (ja) | 1995-06-07 | 2006-09-14 | 超音波行路バンドル及びシステム |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9501623A Pending JPH11507723A (ja) | 1995-06-07 | 1996-06-06 | 超音波行路バンドル及びシステム |
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Country | Link |
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US (1) | US5962790A (ja) |
EP (1) | EP0835444A4 (ja) |
JP (2) | JPH11507723A (ja) |
WO (1) | WO1996041157A1 (ja) |
Cited By (1)
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JP2013140119A (ja) * | 2012-01-06 | 2013-07-18 | Hitachi-Ge Nuclear Energy Ltd | 原子炉底部モニタリング方法、原子炉底部モニタリング装置及び原子炉 |
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EP0835444A1 (en) | 1998-04-15 |
JP4688762B2 (ja) | 2011-05-25 |
EP0835444A4 (en) | 1998-11-18 |
JPH11507723A (ja) | 1999-07-06 |
US5962790A (en) | 1999-10-05 |
WO1996041157A1 (en) | 1996-12-19 |
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