JP2019502930A - 非侵襲式プロセス流体温度計算システム - Google Patents
非侵襲式プロセス流体温度計算システム Download PDFInfo
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- G—PHYSICS
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- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/42—Circuits effecting compensation of thermal inertia; Circuits for predicting the stationary value of a temperature
- G01K7/427—Temperature calculation based on spatial modeling, e.g. spatial inter- or extrapolation
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
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- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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Abstract
Description
プロセス産業は、化学、パルプ、石油、医薬品、食品及び他の流体プロセスプラントにおける物質、例えば、固体、スラリー、液体、蒸気、及び気体に関連するプロセス変数を監視するプロセス変数送信器を使用する。プロセス変数は、圧力、温度、流量、レベル、濁度、密度、濃度、化学組成、及びその他の性質を含む。
非断熱保持具アセンブリ又は急速に変化するプロセス/周囲条件は、導管の外側表面温度の変化率に対する端子温度の変化率を用いてRsensor係数を動的に調整することによって、さらに補正されうる。導管外側表面温度が急速に変化している場合に、時定数を最小にするために、この時間中に追加の補正が適用されてもよい。同様に、周囲温度が導管外側表面温度に対して急速に変化している場合には、より少ない補正が適用されてもよい。
Claims (20)
- プロセス流体温度計算システムであって、
プロセス流体導管の外側温度を測定するように配置された第1の温度センサ;
既知の熱インピーダンスを有する軸部分;
前記軸部分によって前記第1の温度センサから間隔を空けられた第2の温度センサ;
前記第1及び第2の温度センサに結合された測定回路;及び
前記測定回路から温度情報を受け取るために前記測定回路に結合され、かつ熱流束計算を使用してプロセス流体温度出力を計算するためのマイクロプロセッサ;
を含んでいる、
上記プロセス流体温度計算システム。 - 前記プロセス流体導管に取り付けられ且つ前記プロセス流体導管と前記第1の温度センサとの間の熱接触を維持するように構成された保持具をさらに備えている、請求項1に記載のプロセス流体温度計算システム。
- 前記軸部分に取り付けられたハウジングをさらに備え、前記ハウジングは、前記測定回路、前記第2の温度センサ、及び前記マイクロプロセッサを収容している、請求項1に記載のプロセス流体温度計算システム。
- 前記ハウジング内に配置された端子ブロックをさらに備え、前記端子ブロックは前記第2の温度センサを搭載している、請求項3に記載のプロセス流体温度計算システム。
- 熱流束を計算するためのパラメータを格納するメモリをさらに備えている、請求項3に記載のプロセス流体温度計算システム。
- 前記パラメータは、前記プロセス流体導管の壁の物理的特性を含んでいる、請求項5に記載のプロセス流体温度計算システム。
- 前記物理的特性は、前記プロセス流体導管が製作されるところの材料を含んでいる、請求項6に記載のプロセス流体温度計算システム。
- 前記物理的特性は、プロセス流体導管壁の厚さである、請求項6に記載のプロセス流体温度計算システム。
- 前記第1の温度センサに隣接する前記プロセス流体導管の周りに配置された断熱材をさらに備えている、請求項1に記載のプロセス流体温度計算システム。
- 前記軸部分の周りに配置された断熱材をさらに備えている、請求項1に記載のプロセス流体温度計算システム。
- 前記マイクロプロセッサは、前記第1の温度センサによって測定された温度の変化率に基づいて、温度出力を動的に補償するように構成されている、請求項1に記載のプロセス流体温度計算システム。
- 前記マイクロプロセッサは、前記第2の温度センサによって測定された温度変化率に基づいて前記温度出力を動的に補償するように構成されている、請求項1に記載のプロセス流体温度計算システム。
- 前記マイクロプロセッサは、前記第1の温度センサによって測定された温度の変化率に基づいて、前記第2の温度センサによって測定された温度の変化率と比較して前記温度出力を動的に補償するように構成されている、請求項1に記載のプロセス流体温度計算システム。
- 前記出力を遠隔装置に通信するように構成された通信インタフェースをさらに備えている、請求項1に記載のプロセス流体温度計算システム。
- 前記マイクロプロセッサに結合されたローカルオペレータインタフェースをさらに備えている、請求項1に記載のプロセス流体温度計算システム。
- 前記測定回路は、複数のアナログ/デジタル変換器を含み、第1のアナログ/デジタル変換器は、前記第1の温度センサに結合され、且つ第2のアナログ/デジタル変換器は、前記第2の温度センサに結合されている、請求項1に記載のプロセス流体温度計算システム。
- プロセス流体導管内のプロセス流体の温度を計算する方法であって、
前記プロセス流体導管の外側表面の温度を測定すること、
既知の熱インピーダンスを有する軸部分によって前記プロセス流体導管から間隔を空けられた位置の温度を測定すること、
熱流束を計算するために、熱流束方程式、前記プロセス流体導管の外側表面からの測定温度、及び前記軸部分によって前記プロセス流体導管から間隔を空けられた位置からの測定温度を使用すること、
前記プロセス流体導管内のプロセス流体の温度を計算するために、前記プロセス流体導管の壁の熱インピーダンスパラメータと組み合わせて前記計算された熱流束を使用すること、及び
前記計算された温度を出力として提供すること、
を包含する、
上記方法。 - 較正のために、前記プロセス流体導管内に既知の温度を有するプロセス流体を供給すること、及び前記プロセス流体導管内に前記軸部分の既知の熱インピーダンスを更新することをさらに含む、請求項17に記載の方法。
- 前記プロセス流体導管の外側表面の測定値の変化率に基づいてプロセス流体温度の推定値を動的に補償することをさらに含む、請求項17に記載の方法。
- プロセス流体温度計算システムであって、
パイプ保持具;
前記パイプ保持具に連結され、プロセス流体導管の外側温度を測定するように構成された第1の温度センサ;
前記パイプ保持具に結合され、既知の熱インピーダンスを有する軸部分;
前記軸部分に結合され、端子ブロック、測定回路、及びマイクロプロセッサを含むハウジング;
前記ハウジング内の前記端子ブロックに搭載された第2の温度センサ;
を備え、
前記測定回路は、前記マイクロプロセッサおよび前記第1及び第2の温度センサに結合されており、且つ
前記マイクロプロセッサは、熱流束計算と、前記端子ブロック及び前記プロセス流体導管の外側の温度を示す前記測定回路からの情報とを用いて、プロセス流体温度出力を提供するように構成される、
上記プロセス流体温度計算システム。
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PCT/RU2016/000020 WO2017131546A1 (en) | 2016-01-25 | 2016-01-25 | Non-intrusive process fluid temperature calculation system |
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US (2) | US10670546B2 (ja) |
EP (1) | EP3408632B1 (ja) |
JP (1) | JP6835856B2 (ja) |
CN (2) | CN112595427B (ja) |
AU (1) | AU2016389707C1 (ja) |
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EP3408632B1 (en) | 2023-05-24 |
US10670546B2 (en) | 2020-06-02 |
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AU2016389707A1 (en) | 2018-08-02 |
CA3011963A1 (en) | 2017-08-03 |
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