JP4751492B2 - 熱電対 - Google Patents
熱電対 Download PDFInfo
- Publication number
- JP4751492B2 JP4751492B2 JP2007285806A JP2007285806A JP4751492B2 JP 4751492 B2 JP4751492 B2 JP 4751492B2 JP 2007285806 A JP2007285806 A JP 2007285806A JP 2007285806 A JP2007285806 A JP 2007285806A JP 4751492 B2 JP4751492 B2 JP 4751492B2
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- Prior art keywords
- thermocouple
- sheath
- tip
- protective tube
- inorganic insulating
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- 230000001681 protective effect Effects 0.000 claims description 73
- 239000000843 powder Substances 0.000 claims description 55
- 239000012530 fluid Substances 0.000 claims description 40
- 239000011810 insulating material Substances 0.000 claims description 36
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 17
- LTPBRCUWZOMYOC-UHFFFAOYSA-N Beryllium oxide Chemical compound O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 claims description 16
- 239000000395 magnesium oxide Substances 0.000 claims description 13
- 229910052582 BN Inorganic materials 0.000 claims description 11
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 230000004044 response Effects 0.000 description 37
- 238000000034 method Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
- G01K1/18—Special arrangements for conducting heat from the object to the sensitive element for reducing thermal inertia
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
を受けず、速い応答速度の熱電対を提供すべく、外径の細いシース熱電対を、外径が太く内部に無機絶縁材粉末が充填された保護管に先端が露出するようにして挿入した熱電対において、保護管から露出したシース熱電対の露出部を、保護管の下部に設けられた中空の保護筒に挿入し、保護筒は、側面に設けられ、外部から流れてきた被測定流体が保護筒内のシース熱電対の表面を流れるように開口した複数の貫通窓と、先端側の底面に設けられ、保護管から露出したシース熱電対の露出部が挿通する孔を設けた底蓋と、を有し、保護筒内に挿入されたシース熱電対の測温点が収納されているシース熱電対の先端部を保護筒の底蓋から短く露出させたものである。
1. 高速応答
保護筒14及び保護筒14内シース熱電対の保護管11に近接する部分では、熱容量が大きく温度応答の遅い保護管11部からの熱伝導の影響により、被測定流体の温度変化への追従がシース熱電対単体に比べて遅い。
2.機械的損傷の回避
保護筒14は、保護管11に溶接で固定され、かつ底蓋12を持つ円筒であるので、構造のいわゆる立体効果により、厚い肉厚でなくても高速流体中での折れや曲がり、座屈などの機械的損傷が回避可能である。厚い肉厚を必要としないことは、保護筒14や底蓋12の熱容量を小さくできることであり、前述の応答速度向上にも寄与している。
シース外径 : ψ3.2mm
シース材質 : NCF600
無機絶縁材粉末材質 : マグネシア
測温点周辺に充填した熱伝導の良い無機絶縁材粉末の材質 : 窒化ボロン
飛散防止のために先端の充填した無機絶縁材粉末の材質 : マグネシア
このシース熱電対を、室温の空気中から流速1m/秒の水中に落下させることにより、応答速度を測定した結果、応答時定数(出力変化が全変化分の63.2%に達するのに要する時間)は、0.46秒であった。
保護筒肉厚 : 1mm
保護筒長さ : 22mm
保護筒及び底蓋材質 : NCF600
保護筒貫通窓 : ψ2.3mmの円形窓×10(窓配置は図7に示す通り)
保護筒底 蓋厚さ : 3mm
シース熱電対の先端露出長 : 9mm
この熱電対をシース熱電対単体の試験と同様に、室温の空気中から流速1m/秒の水中に落下させることにより、応答速度を測定した。応答時定数は、0.50乃至0.55秒であった。使用したシース熱電対の単体での応答時定数0.46秒との差は微少で、本発明による構造は、保護筒を設けることによる応答速度低下を極めて少なくするものであることを証明している。
2…無機絶縁材粉末
3…+側熱電対素線
4…−側熱電対素線
5…測温点
11…保護管
13…貫通窓
12…底蓋
14…保護筒
Claims (5)
- 外径の細いシース熱電対を、外径が太く内部に無機絶縁材粉末が充填された保護管に先端が露出するようにして挿入した熱電対において、
前記保護管から露出した前記シース熱電対の露出部を、前記保護管の下部に設けられた中空の保護筒に挿入し、
前記保護筒は、
側面に設けられ、外部から流れてきた被測定流体が前記保護筒内の前記シース熱電対の表面を流れるように開口した複数の貫通窓と、
先端側の底面に設けられ、前記保護管から露出した前記シース熱電対の露出部が挿通する孔を設けた底蓋と、を有し、
前記保護筒内に挿入された前記シース熱電対の測温点が収納されているシース熱電対の先端部を前記保護筒の底蓋から短く露出させた熱電対。 - 前記保護筒と前記シース熱電対の金属シースを同じ材質で構成した請求項1記載の熱電対。
- 前記シース熱電対の測温点のある先端部に無機絶縁材粉末として窒化ボロン又はベリリアを充填し、前記先端部以外はマグネシア又はアルミナ粉末を充填した請求項1あるいは請求項2記載の熱電対。
- 前記シース熱電対の測温点のある先端部に充填した窒化ボロン又はベリリアの無機絶縁材粉末のさらに先端部にマグネシア又はアルミナの無機絶縁材粉末を充填した請求項3記載の熱電対。
- 前記複数の貫通窓は、前記保護筒の側面であって前記シース熱電対の測温点に至る途中に対向した位置に設けられていることを特徴とする、請求項1から4のいずれか1項に記載の熱電対。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007285806A JP4751492B2 (ja) | 2007-11-02 | 2007-11-02 | 熱電対 |
US12/666,105 US20100322286A1 (en) | 2007-11-02 | 2008-10-24 | Quick-response thermocouple for high-speed fluid |
CN200880014832A CN101675327A (zh) | 2007-11-02 | 2008-10-24 | 高速流体用高速响应热电偶 |
PCT/JP2008/069830 WO2009057728A1 (ja) | 2007-11-02 | 2008-10-24 | 高速流体用高速応答熱電対 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007285806A JP4751492B2 (ja) | 2007-11-02 | 2007-11-02 | 熱電対 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2009115478A JP2009115478A (ja) | 2009-05-28 |
JP2009115478A5 JP2009115478A5 (ja) | 2009-07-16 |
JP4751492B2 true JP4751492B2 (ja) | 2011-08-17 |
Family
ID=40591111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007285806A Active JP4751492B2 (ja) | 2007-11-02 | 2007-11-02 | 熱電対 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100322286A1 (ja) |
JP (1) | JP4751492B2 (ja) |
CN (1) | CN101675327A (ja) |
WO (1) | WO2009057728A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102443226B1 (ko) | 2021-11-11 | 2022-09-15 | 군산대학교산학협력단 | 응답속도가 빠른 평균 온도 센서 |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5642525B2 (ja) * | 2010-02-02 | 2014-12-17 | 株式会社日立ハイテクサイエンス | 示差走査熱量計 |
SI23302A (sl) * | 2010-02-19 | 2011-08-31 | Hidria AET DruĹľba za proizvodnjo vĹľignih sistemov in elektronike d.o.o. | Postopek izdelave temperaturnih tipal |
EP2386843B1 (de) * | 2010-05-11 | 2016-08-03 | Innovatherm Prof. Dr. Leisenberg GmbH & Co. KG | Thermoelement |
CN103180703B (zh) * | 2010-09-07 | 2016-10-19 | 斯通瑞智公司 | 温度传感器和相应的发动机系统 |
ES2409116T3 (es) * | 2010-09-23 | 2013-06-25 | Andreas Massold | Procedimiento para la medición de temperatura en un vehículo. |
EP2647973B1 (en) * | 2012-04-06 | 2017-12-06 | RETECH Spólka z o.o. | Method of manufacturing temperature sensor and the temperature sensor |
US9581502B2 (en) * | 2012-09-13 | 2017-02-28 | David Jonathan Tafoya | Temperature control apparatus |
CN105509913B (zh) * | 2014-09-23 | 2019-05-31 | 国家核电技术有限公司 | 热电偶多点测温装置和试验用反应堆 |
JP6317292B2 (ja) * | 2015-04-28 | 2018-04-25 | 株式会社岡崎製作所 | シース熱電対およびその先端部の製造方法 |
CN105136319A (zh) * | 2015-05-29 | 2015-12-09 | 天津大学 | 柴油机余热回收系统测温热电偶的固定装置 |
CN105300541B (zh) * | 2015-10-23 | 2018-11-27 | 安徽蓝德自动化科技有限公司 | 一种高精度热电偶 |
CN105300542B (zh) * | 2015-10-23 | 2018-11-27 | 安徽蓝德自动化科技有限公司 | 一种用于高速流体温度测量的热电偶 |
CN106197716A (zh) * | 2016-08-31 | 2016-12-07 | 大工(青岛)新能源材料技术研究院有限公司 | 护管分段式热电偶及其组装方法 |
GB2554350A (en) * | 2016-09-21 | 2018-04-04 | Continental Automotive Gmbh | Thermocouple probe for determining a temperature and method for producing the thermocouple probe |
CN106482854B (zh) * | 2016-11-18 | 2019-09-17 | 中国计量大学 | 一种细丝热电偶保护装置 |
US10428716B2 (en) * | 2016-12-20 | 2019-10-01 | Sensata Technologies, Inc. | High-temperature exhaust sensor |
US10753807B2 (en) | 2018-01-19 | 2020-08-25 | Te Wire & Cable Llc | Thermocouple termination/closure and method |
CN109341885B (zh) * | 2018-11-08 | 2024-05-21 | 鑫国集团有限公司 | 一种超长两点实体铠装热电偶 |
CN113984243B (zh) * | 2021-10-22 | 2023-11-10 | 中国原子能科学研究院 | 温度检测装置 |
CN113916393A (zh) * | 2021-10-22 | 2022-01-11 | 中国原子能科学研究院 | 热电偶护管及快堆中间热交换器 |
CN115855294B (zh) * | 2023-02-22 | 2023-05-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | 具有抗冲击过载能力的热电偶及其制备方法和测试方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5855727A (ja) * | 1981-09-29 | 1983-04-02 | Toshiba Corp | 熱電対装置 |
JPS59128539U (ja) * | 1983-02-18 | 1984-08-29 | 大阪瓦斯株式会社 | 液体の測温装置 |
US4467134A (en) * | 1983-06-30 | 1984-08-21 | General Electric Company | Thermocouple with out-of-line aspiration holes |
JPS60185128A (ja) * | 1984-03-02 | 1985-09-20 | Okazaki Seisakusho:Kk | サ−モセンサ−の製造方法 |
JPH0656334B2 (ja) * | 1985-03-28 | 1994-07-27 | 株式会社東芝 | 露出形熱電対 |
JP4536885B2 (ja) * | 2000-08-22 | 2010-09-01 | 株式会社大塚製薬工場 | 温度センサー保持具 |
JP2002168700A (ja) * | 2000-11-30 | 2002-06-14 | Denso Corp | 温度センサ |
DE102006007221B3 (de) * | 2006-02-15 | 2007-09-06 | Epcos Ag | Fühler und Temperaturmessvorrichtung |
-
2007
- 2007-11-02 JP JP2007285806A patent/JP4751492B2/ja active Active
-
2008
- 2008-10-24 WO PCT/JP2008/069830 patent/WO2009057728A1/ja active Application Filing
- 2008-10-24 US US12/666,105 patent/US20100322286A1/en not_active Abandoned
- 2008-10-24 CN CN200880014832A patent/CN101675327A/zh active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102443226B1 (ko) | 2021-11-11 | 2022-09-15 | 군산대학교산학협력단 | 응답속도가 빠른 평균 온도 센서 |
Also Published As
Publication number | Publication date |
---|---|
CN101675327A (zh) | 2010-03-17 |
JP2009115478A (ja) | 2009-05-28 |
WO2009057728A1 (ja) | 2009-05-07 |
US20100322286A1 (en) | 2010-12-23 |
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