JPH0222661Y2 - - Google Patents
Info
- Publication number
- JPH0222661Y2 JPH0222661Y2 JP1983162114U JP16211483U JPH0222661Y2 JP H0222661 Y2 JPH0222661 Y2 JP H0222661Y2 JP 1983162114 U JP1983162114 U JP 1983162114U JP 16211483 U JP16211483 U JP 16211483U JP H0222661 Y2 JPH0222661 Y2 JP H0222661Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal tube
- mounting member
- metal
- thermocouple thermometer
- thermal resistance
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims description 43
- 239000002184 metal Substances 0.000 claims description 43
- 125000006850 spacer group Chemical group 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000004043 responsiveness Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000012777 electrically insulating material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【考案の詳細な説明】
本考案は導電金属管の内部温度を測定する温度
測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature measuring device for measuring the internal temperature of a conductive metal tube.
第１図、第２図は従来の温度測定装置を示すも
ので、図中１は被測定物である導電金属管、２は
熱電対温度計である。熱電対温度計２の温接点は
円盤状の取付部材３にロー付け等の手段で固定さ
れている。上記取付部材３はアルミニウム、銅な
どの熱伝導率の高い金属材料よりなるもので、金
属管１の内周部の熱を熱電対温度計２の温接点に
伝達するためのものである。ところが、熱伝導率
の高い金属材料は一般に電気的にも良導体である
ために、金属管１と熱電対温度計２との間の導通
を防止する意味で、金属管１と取付部材３との間
にはセラミツク等の電気絶縁材料よりなる円筒状
の絶縁スペーサ４ａ，４ｂを介挿している。 1 and 2 show a conventional temperature measuring device, in which numeral 1 represents a conductive metal tube as an object to be measured, and numeral 2 represents a thermocouple thermometer. The hot junction of the thermocouple thermometer 2 is fixed to a disk-shaped mounting member 3 by means such as brazing. The mounting member 3 is made of a metal material with high thermal conductivity, such as aluminum or copper, and is used to transfer heat from the inner circumference of the metal tube 1 to the hot junction of the thermocouple thermometer 2. However, since metal materials with high thermal conductivity are generally good electrical conductors, the connection between the metal tube 1 and the mounting member 3 is necessary to prevent electrical continuity between the metal tube 1 and the thermocouple thermometer 2. Cylindrical insulating spacers 4a and 4b made of electrically insulating material such as ceramic are inserted between them.
しかしながら、上記の構成では、取付部材３、
電気絶縁スペーサ４ａ等の加工精度をいかに高め
ても、金属管１と絶縁スペーサ４ａとの間、並び
に絶縁スペーサ４ａと取付部材３との間には少な
くとも50μm程度のギヤツプl1，l2ができる。ま
た、金属管１と熱電対温度計２との間の熱抵抗Ｒ
は、
Ｒ＝１／１／R1＋l1／λ1＋１／R2＋l2／λ2＋１／R3
…(1)
となる。ただしR1は金属管１の熱抵抗、λ1，λ2
は空気の熱伝導率、R2は絶縁スペーサ４ａの熱
抵抗、R3は取付部材３の熱抵抗である。 However, in the above configuration, the mounting member 3,
No matter how high the machining accuracy of the electrically insulating spacer 4a and the like is, gaps l 1 and l 2 of at least about 50 μm are created between the metal tube 1 and the insulating spacer 4a, and between the insulating spacer 4a and the mounting member 3 . . Also, the thermal resistance R between the metal tube 1 and the thermocouple thermometer 2
R=1/1/R 1 +l 1 /λ 1 +1/R 2 +l 2 /λ 2 +1/R 3
…(1) becomes. However, R 1 is the thermal resistance of metal tube 1, λ 1 , λ 2
is the thermal conductivity of air, R 2 is the thermal resistance of the insulating spacer 4a, and R 3 is the thermal resistance of the mounting member 3.
ここで、R1，R3はかなり小さいので１／R1，１／R3
は大きな値となるが、l1／λ1，l2／λ2，１／R2はあま
り大
きくない。このため全熱抵抗Ｒはl1／λ1，l2／λ2，１
／R2
に影響されて大きくなる。その結果、金属管１の
温度が変化する場合は熱電対温度計２の指示が迅
速に追従することができず、10秒以上もの遅れが
生ずる不具合があつた。 Here, since R 1 and R 3 are quite small, 1/R 1 and 1/R 3 have large values, but l 1 /λ 1 , l 2 /λ 2 and 1/R 2 are not so large. Therefore, the total thermal resistance R is l 1 /λ 1 , l 2 /λ 2 , 1
/R 2 increases. As a result, when the temperature of the metal tube 1 changes, the thermocouple thermometer 2 cannot quickly follow the instructions, resulting in a delay of 10 seconds or more.
本考案はこのような事情にもとづいてなされた
もので、その目的は、導電金属管の内部温度を熱
電対温度計により測定する温度測定装置におい
て、簡単な構成により温度計の応答性を良くする
ことにある。 The present invention was developed based on these circumstances, and its purpose is to improve the responsiveness of a thermometer with a simple configuration in a temperature measuring device that measures the internal temperature of a conductive metal tube using a thermocouple thermometer. There is a particular thing.
本考案はこの目的達成のため、外周部を電気絶
縁層、その内側を熱伝導率の高い金属層とする取
付部材を用い、その金属層に熱電対温度計の温接
点を接触させて固定するように構成し、電気絶縁
層と金属層との間のギヤツプをなくすことにより
全熱抵抗を小さくすることを可能にしているもの
である。 To achieve this objective, the present invention uses a mounting member with an electrically insulating layer on the outer periphery and a metal layer with high thermal conductivity on the inside, and the hot junction of the thermocouple thermometer is brought into contact with the metal layer and fixed. This configuration makes it possible to reduce the total thermal resistance by eliminating the gap between the electrical insulating layer and the metal layer.
以下、本考案の実施例を説明する。 Examples of the present invention will be described below.
第３図、第４図は第１の実施例を示すもので、
図中５は中心部に熱電対温度計２を固定した円盤
状の取付部材である。この取付部材５は被測定物
である導電金属管１の内径とほぼ等しい外径を有
して上記金属管１内に同芯的に挿入されるもの
で、銅などの熱伝導率の高い金属材料よりなる金
属円盤６の外周に、薄い電気絶縁層（たとえばア
ルミナなどのセラミツクス材）７をプラズマコー
テイング等の手法によつて被着してなるものであ
る。プラズマコーテイングによると、厚さ(b)0.1
〜0.3mm程度の薄い電気絶縁層７をつくることが
できる。そして前記熱電対温度計２は、上記金属
円盤６に温接点を接触させて固定されている。な
お図中８ａ，８ｂは取付部材５を挾むように金属
管１の内部に挿入された電気絶縁材料よりなる円
筒部材である。 3 and 4 show the first embodiment,
In the figure, reference numeral 5 denotes a disk-shaped mounting member to which the thermocouple thermometer 2 is fixed in the center. This mounting member 5 has an outer diameter approximately equal to the inner diameter of the conductive metal tube 1 that is the object to be measured, and is inserted concentrically into the metal tube 1, and is made of a metal with high thermal conductivity such as copper. A thin electrically insulating layer (for example, a ceramic material such as alumina) 7 is deposited on the outer periphery of a metal disk 6 made of a material by a technique such as plasma coating. According to plasma coating, thickness (b) 0.1
A thin electrical insulating layer 7 of about 0.3 mm can be made. The thermocouple thermometer 2 is fixed to the metal disk 6 with its hot junction in contact with the metal disk 6. In the figure, 8a and 8b are cylindrical members made of an electrically insulating material inserted into the metal tube 1 so as to sandwich the mounting member 5 therebetween.
このような構成では、金属管１と熱電対温度計
２との間の熱抵抗R′は、
R′＝１／１／R1＋l1／λ1＋１／R2＋１／R3 …(2)
となる。ただしR1は金属管１の熱抵抗、λ1は空
気の熱伝導率、l1は金属管１と取付部材５との間
のギヤツプ、R2は絶縁層７の熱抵抗、R3は金属
円盤６の熱抵抗である。 In such a configuration, the thermal resistance R' between the metal tube 1 and the thermocouple thermometer 2 is R'=1/1/R 1 +l 1 /λ 1 +1/R 2 +1/R 3 ...(2 ) becomes. However, R 1 is the thermal resistance of the metal tube 1, λ 1 is the thermal conductivity of air, l 1 is the gap between the metal tube 1 and the mounting member 5, R 2 is the thermal resistance of the insulating layer 7, and R 3 is the metal This is the thermal resistance of the disk 6.
ここで、(2)式を前記(1)式と比較すると、(1)式に
おけるl2／λ2がなく、しかも絶縁層７は第１図、第
２図の絶縁スペーサ４ａよりはるかに薄いので
R2は大幅に小さくなる。このため全熱抵抗R′は、
(1)式のＲより大幅に小さくなる。 Here, when comparing equation (2) with equation (1) above, it is found that there is no l 2 /λ 2 in equation (1), and the insulating layer 7 is much thinner than the insulating spacer 4a in FIGS. 1 and 2. So
R 2 becomes significantly smaller. Therefore, the total thermal resistance R′ is
It is significantly smaller than R in equation (1).
したがつて、金属管１の温度が変化するとき、
熱電対温度計２の指示は迅速に追従し、温度計２
の応答性が改善されることになる。 Therefore, when the temperature of the metal tube 1 changes,
The indication of thermocouple thermometer 2 follows quickly and thermometer 2
This results in improved responsiveness.
次に第５図、第６図に示す第２の実施例につい
て説明する。 Next, a second embodiment shown in FIGS. 5 and 6 will be described.
図中９はリング状の取付部材で、これはセラミ
ツクス等の電気絶縁リング１０の内周面に銅、ニ
ツケル、金などの熱伝導率の高い金属層１１を電
気メツキ、化学メツキ、コーテイング等の手法に
よつて被着してなるものである。そして上記金属
層１１には熱電対温度計２が、その温接点を接触
させてロー付けや溶接により固定されている。上
記電気絶縁リング１０は、外径を被測定物である
導電金属管１の内径とほぼ等しく加工されてい
る。 In the figure, reference numeral 9 denotes a ring-shaped mounting member, which is formed by electrolytically plating, chemically plating, coating, etc. a metal layer 11 with high thermal conductivity such as copper, nickel, or gold on the inner peripheral surface of an electrically insulating ring 10 made of ceramics or the like. It is formed by depositing it by a certain method. A thermocouple thermometer 2 is fixed to the metal layer 11 by brazing or welding with its hot junction in contact. The electrically insulating ring 10 is machined so that its outer diameter is approximately equal to the inner diameter of the conductive metal tube 1 that is the object to be measured.
このような構成であつても金属管１と熱電対温
度計２との熱抵抗は(2)式によつて求められる。し
たがつて、前記(1)式と比較すると、l2／λ2がなく、
しかも金属層１１は薄いのでR2が小さくなり、
全熱抵抗を大幅に小さくすることができる。そし
てこれによつて温度計２の応答性が大幅に改善さ
れることになる。 Even with such a configuration, the thermal resistance between the metal tube 1 and the thermocouple thermometer 2 can be determined by equation (2). Therefore, compared to the above equation (1), there is no l 2 /λ 2 and the metal layer 11 is thin, so R 2 becomes small.
Total thermal resistance can be significantly reduced. This greatly improves the responsiveness of the thermometer 2.
以上詳述したように、本考案の温度測定装置
は、例えば大電流が流れる細管の管壁温度分布測
定を行なう場合等において使用される「導電金属
管の管内温度測定装置」であつて、市販されてい
る熱電対温度計の先端に、被測定物である導電金
属管の内径とほぼ等しい外径を有し、外周部が電
気絶縁層となつており内周部が熱伝導率の高い金
属層となつている二層構造の円盤状またはリング
状の取付部材を固定し、この取付部材を上記導電
金属管の管内に挿入して温度測定を行なうごとく
構成したことを特徴とするものである。 As described in detail above, the temperature measuring device of the present invention is a “tube temperature measuring device for conductive metal tubes” that is used, for example, when measuring the temperature distribution on the tube wall of a thin tube through which a large current flows, and is commercially available. The tip of the thermocouple thermometer has an outer diameter approximately equal to the inner diameter of the conductive metal tube that is the object to be measured, the outer periphery is an electrically insulating layer, and the inner periphery is made of a metal with high thermal conductivity. The present invention is characterized in that a disc-shaped or ring-shaped mounting member having a two-layer structure is fixed, and the mounting member is inserted into the conductive metal tube to measure the temperature. .
したがつて本考案は、次のような作用効果を奏
する。 Therefore, the present invention has the following effects.
電気絶縁層と金属層とが一体化されているた
め、従来両者間に存在していたギヤツプを無く
すことができる。 Since the electrical insulating layer and the metal layer are integrated, the gap that conventionally existed between them can be eliminated.
取付部材の構造上、例えば周知のコーテイン
グ技術等を採用することにより、電気絶縁層を
比較的薄く形成することが可能となる。 Due to the structure of the mounting member, for example, by employing a well-known coating technique or the like, it is possible to form the electrically insulating layer relatively thinly.
上記の結果として、全熱抵抗を小さくす
ることができる。かくして熱を伝達する速度が
高められ、温度変化に対する応答性が向上す
る。 As a result of the above, the total thermal resistance can be reduced. Thus, the rate of heat transfer is increased and the responsiveness to temperature changes is improved.
第１図は従来例を示す縦断面斜視図、第２図は
第１図の−断面図、第３図は本考案の第１の
実施例を示す縦断面斜視図、第４図は第３図の
−断面図、第５図は本考案の第２の実施例を示
す縦断面斜視図、第６図は第５図の−断面図
である。
１……被測定物である導電金属管、２……熱電
対温度計、５，９……取付部材、６……金属円盤
（金属層）、７……電気絶縁層、１０……電気絶縁
リング（電気絶縁層）、１１……金属層。
FIG. 1 is a vertical cross-sectional perspective view showing a conventional example, FIG. 2 is a cross-sectional view taken from - in FIG. 1, FIG. FIG. 5 is a vertical cross-sectional perspective view showing a second embodiment of the present invention, and FIG. 6 is a cross-sectional view of FIG. 5. 1... Conductive metal tube as the object to be measured, 2... Thermocouple thermometer, 5, 9... Mounting member, 6... Metal disk (metal layer), 7... Electrical insulation layer, 10... Electrical insulation Ring (electrical insulating layer), 11...metal layer.
Claims (1)
外径を有して上記金属管内に同芯的に挿入され外
周部を電気絶縁層、その内側を熱伝導率の高い金
属層とする円盤状またはリング状の取付部材と、
この取付部材の導電金属層に温接点を接触させて
固定した熱電対温度計とを具備したことを特徴と
する温度測定装置。 A disc-shaped disk having an outer diameter approximately equal to the inner diameter of the conductive metal tube that is the object to be measured, and inserted concentrically into the metal tube, with an electrically insulating layer on the outer periphery and a metal layer with high thermal conductivity on the inside. Or a ring-shaped mounting member,
A temperature measuring device comprising: a thermocouple thermometer fixed with a hot junction in contact with the conductive metal layer of the mounting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16211483U JPS6070043U (en) | 1983-10-20 | 1983-10-20 | temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16211483U JPS6070043U (en) | 1983-10-20 | 1983-10-20 | temperature measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6070043U JPS6070043U (en) | 1985-05-17 |
| JPH0222661Y2 true JPH0222661Y2 (en) | 1990-06-19 |
Family
ID=30356086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16211483U Granted JPS6070043U (en) | 1983-10-20 | 1983-10-20 | temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6070043U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018096759A (en) * | 2016-12-09 | 2018-06-21 | 株式会社ジャパンユニックス | Temperature sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5737428B2 (en) * | 1978-05-08 | 1982-08-10 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5737428U (en) * | 1980-08-12 | 1982-02-27 |
-
1983
- 1983-10-20 JP JP16211483U patent/JPS6070043U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5737428B2 (en) * | 1978-05-08 | 1982-08-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6070043U (en) | 1985-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20160006163A (en) | Method for producing a soot sensor with a laser beam | |
| US20030029232A1 (en) | Coupon for measuring corrosion rates and system | |
| US3412359A (en) | Thermoprobe assembly | |
| JPH0222661Y2 (en) | ||
| US2516952A (en) | Insulated thermocouple with metallic coating | |
| JP3553613B2 (en) | Hybrid integrated circuit of gas sensor | |
| US6186661B1 (en) | Schmidt-Boelter gage | |
| US3525648A (en) | Thermoelectric heat flow responsive device | |
| JPS61239127A (en) | Heat flux sensor | |
| JPH0399230A (en) | Mass flow rate sensor | |
| JPH0593732A (en) | Flow sensor | |
| JPS5935783Y2 (en) | heat flow sensor | |
| JPS6021327B2 (en) | heat flux meter | |
| JPH0446206Y2 (en) | ||
| JP2679811B2 (en) | Gas detector | |
| JPS62220850A (en) | Atmosphere detector | |
| JPH04104494A (en) | Ceramics heater | |
| JPH0146010B2 (en) | ||
| JPS604084Y2 (en) | displacement transducer | |
| JP2701565B2 (en) | Thin film thermistor and method of manufacturing the same | |
| JPH102805A (en) | Bonding type surface temperature measuring device | |
| JPH05299703A (en) | Coaxial type thermocouple | |
| JP2000131271A (en) | Limiting current type oxygen sensor | |
| JPH0577737U (en) | Thin film resistance thermometer | |
| JPS6116930B2 (en) |