JPH0395423A - Thermocouple - Google Patents
ThermocoupleInfo
- Publication number
- JPH0395423A JPH0395423A JP1233166A JP23316689A JPH0395423A JP H0395423 A JPH0395423 A JP H0395423A JP 1233166 A JP1233166 A JP 1233166A JP 23316689 A JP23316689 A JP 23316689A JP H0395423 A JPH0395423 A JP H0395423A
- Authority
- JP
- Japan
- Prior art keywords
- thermocouple
- tube
- tip
- protective tube
- insulating
- 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.)
- Pending
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、温度測定用の熱電対に係り、４′！Ｊに縦向
きに使用する熱電対に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a thermocouple for measuring temperature. This relates to a thermocouple that is used vertically in J.
（従来の技術）
従来、縦向きにして使用する熱電対は、第２図に示す如
《垂直な保護管ｌ内に、熱電対２を貫通した絶縁管３を
押入し、熱電対２の先端を保護管１の底部より浮かした
構造のものであった。(Prior art) Conventionally, thermocouples used vertically are manufactured by pushing an insulating tube 3 that passes through the thermocouple 2 into a vertical protective tube l, as shown in FIG. It had a structure in which it floated above the bottom of the protective tube 1.
（発明が解決しようとする課題）
ところで上記構造の熱電対は、第３図に示す絶縁管３の
保護管１への挿入時の押し込みにより熱電対２の先端が
保護管ｌの底に押しイ」けられて変形したり、また使用
時高温になって熱電対２が第４図に示す如く絶縁管３の
重量により切れたり、さらには熱電対２が熱膨張による
伸びに件って第３図と同様に変形したりした。(Problem to be Solved by the Invention) By the way, in the thermocouple having the above structure, the tip of the thermocouple 2 is pushed into the bottom of the protective tube 1 by pushing the insulating tube 3 into the protective tube 1 as shown in FIG. In addition, the thermocouple 2 may break due to the weight of the insulating tube 3 due to the high temperature during use, as shown in Figure 4, and the thermocouple 2 may break due to elongation due to thermal expansion. It was deformed as shown in the figure.
そこで本発明は、絶縁管を保護管内へ押し込んでも熱電
苅の先端が保護管の底にＦｌｌｔ，付けられず、また使
用時高ｄ１Ｍになっても絶縁管の重量により熱電対が切
れることが煎く、さらには熱膨張により熱電対が伸びて
も変形することの無いようにした熱電対を提供しようと
するものである。Therefore, the present invention prevents the tip of the thermocouple from attaching to the bottom of the protective tube even if the insulating tube is pushed into the protective tube, and also prevents the thermocouple from breaking due to the weight of the insulating tube even if the height is d1M during use. Furthermore, it is an object of the present invention to provide a thermocouple which is not deformed even if the thermocouple is stretched due to thermal expansion.
（課題を解決するための手段）
上記課題を解決するための本発明の熱電対は、玉直な保
護管内の底部に、該底部に対応する外形状で中央に透孔
を有する絶縁材製のサポート治具か配され、その上に熱
電対を貫通した絶縁管が載置されて熱電対の先端が前記
透孔［ノ刊こ位置せしめられていることを特徴とするも
のである。(Means for Solving the Problems) A thermocouple of the present invention for solving the above problems is provided with a thermocouple made of an insulating material having an outer shape corresponding to the bottom and a through hole in the center at the bottom of the straight protection tube. A support jig is disposed, and an insulating tube passing through the thermocouple is placed on the support jig, so that the tip of the thermocouple is positioned in the through hole.
（作用）
本発明の熱電対は、上述の如く構成されているので、そ
の組立製作時絶縁管を保護管内へ押し込むと、先に保護
管内の底部に配したサポート治具に絶縁管が当たって停
止し、熱電対の先端はザボ− １−治具の中央の透孔内
に押入されるので、保護管の底に押し付けられず、従っ
て変形することが無い。また温度測定の使用時高温にな
っても絶縁管はザポート治具に支持されているので、熱
電対に絶縁管の重量がかかることが無く、従って熱電対
が切れることがク１１（い。さらに熱？ｌＥは熱膨張に
より伸びても、熱電対の先端はサポーｌ・治具の透孔内
にあって保護管の底に当たることが無いので、変形する
ことが無い。(Function) Since the thermocouple of the present invention is constructed as described above, when the insulating tube is pushed into the protective tube during assembly, the insulating tube first hits the support jig placed at the bottom of the protective tube. Since the thermocouple is stopped and the tip of the thermocouple is pushed into the through hole in the center of the sabo-1 jig, it is not pressed against the bottom of the protective tube and therefore does not deform. Furthermore, even if the temperature reaches a high temperature during temperature measurement, the insulating tube is supported by the Zaport jig, so the weight of the insulating tube is not applied to the thermocouple, and therefore the thermocouple will not break. Even if the heat expands due to thermal expansion, the tip of the thermocouple will not be deformed because it is inside the through hole of the support l/jig and will not hit the bottom of the protective tube.
（実施例）
本発明による熱電対の一実施例を図によって説明すると
、第ｌ図に示す如く外径１０ｍｍ、内径８．６ｍｍ、長
さ３００ｍｍのｐｔより成る保護管１内の５ｍｍＲの球
面状の底部１ａに、該底部１ａに対応ずる外形状で外径
８．５ｍｍ、高さ］ Ｏ ｍｍで中央に内径４ ｎ＋ｍ
の透孔５を有するアルミナより成るサポート治具６が配
され、その上に線径０． ５ｍｍのＰｔ素線２ａとＰｔ
−Ｒｈｌ３ｗｔ％素線２ｂを貫通し先端で／！１ｋ接点
２ｃを設けて成る熱電対２を有する直径６ ｍｍ、高さ
５０ｍｍのアルミナより戒る絶縁管３が複数、本例では
６個載置されて熱電対２の先端が前記透孔５内に位置せ
しめられている。(Embodiment) An embodiment of the thermocouple according to the present invention will be described with reference to the drawings. As shown in Fig. 1, a spherical surface of 5 mm R is formed in a protective tube 1 made of PT with an outer diameter of 10 mm, an inner diameter of 8.6 mm, and a length of 300 mm. At the bottom part 1a of the bottom part 1a, an outer diameter of 8.5 mm, a height of 8.5 mm, and an inner diameter of 4 n+m in the center, corresponding to the bottom part 1a.
A support jig 6 made of alumina with a through hole 5 of 5mm Pt wire 2a and Pt
-Rhl3wt% through the strand 2b and at the tip/! A plurality of alumina insulating tubes 3 each having a diameter of 6 mm and a height of 50 mm each having a thermocouple 2 having a 1k contact 2c, six in this example, are placed so that the tip of the thermocouple 2 is inside the through hole 5. It is located in
一方、従来例は第２図に示す如く実施例と同し保謹１ｌ
ｌ内に、実施例と同し熱電対２を貫通した絶縁管３を挿
入し、熱電対２の先端を保護管１の底部より浮かしてあ
る。On the other hand, the conventional example has the same warranty as the embodiment as shown in FIG.
1, an insulating tube 3 passing through the thermocouple 2 as in the embodiment is inserted, and the tip of the thermocouple 2 is raised above the bottom of the protective tube 1.
これら実糺例及び従来例の熱電対を、溶融ノＪラス温度
のδＩＩ＋定に用いた処、従来例の熱電対はＪＯ本ｔｉ
ｔ ４本が半年間の使用で断線しｌ？命となったのに刻
し、実施例の熱電対は１０本全てが半年以」二使用して
も断線せず寿命が長いことが判る。When the thermocouples of these practical examples and conventional examples were used for the constant δII+ of the J-las temperature of melting, the thermocouples of the conventional example were JO main ti.
t 4 wires broke after half a year of use. It can be seen that all 10 thermocouples of the example have a long life without breaking even after being used for more than half a year.
尚、上記実施例は保護膏１がｐｔよりなるが、溶融ガラ
ス温度の測定以外の温度測定の場合は保護管１はアルミ
ナ等のセラミックスより或るものでも良い。In the above embodiment, the protective paste 1 is made of PT, but in the case of temperature measurement other than the measurement of molten glass temperature, the protective tube 1 may be made of ceramic such as alumina.
（発明の効果）
以上の説明で判るように本発明の熱電対は、組立製作時
熱電対の先端が保護管の底に押し付けられないので、変
形することが無い。また仙川時高温になっても絶縁管の
重量が熱電対にかかることがないので、熱電対が切れる
ことが無く、さらに熱膨張により熱電対が伸びても先端
が保護管の底に当たることが無いので変形することが無
い。従って力命が君゜シ＜長《なるものである。(Effects of the Invention) As can be seen from the above description, the thermocouple of the present invention is not deformed because the tip of the thermocouple is not pressed against the bottom of the protective tube during assembly. In addition, even if the temperature reaches high temperatures during Sengawa, the weight of the insulating tube is not applied to the thermocouple, so the thermocouple will not break, and even if the thermocouple stretches due to thermal expansion, the tip will not hit the bottom of the protective tube. Therefore, it will not be deformed. Therefore, power and life are kings.
第１図は本発明の熱電対の一実施例を示す図、第２図は
従来の熱電幻を示す図、第３図は従来の熱電対の組立製
作時の不具合を示す図、第４図は従来の熱電対の温度測
定時の不具合を示す図である。
１・・・保護管、２・・・熱電対、３・・・絶縁管。Fig. 1 is a diagram showing an embodiment of the thermocouple of the present invention, Fig. 2 is a diagram showing a conventional thermoelectric device, Fig. 3 is a diagram showing problems during assembly and production of a conventional thermocouple, and Fig. 4 FIG. 2 is a diagram showing a problem with a conventional thermocouple when measuring temperature. 1... Protection tube, 2... Thermocouple, 3... Insulation tube.
Claims (1)
状で中央に透孔を有する絶縁材製のサポート治具が配さ
れ、その上に熱電対を貫通した絶縁管が載置されて熱電
対の先端が前記透孔内に位置せしめられていることを特
徴とする熱電対。(1) A support jig made of insulating material with an external shape corresponding to the bottom and a through hole in the center is arranged at the bottom of the vertical protection tube, and an insulating tube passing through the thermocouple is placed on top of it. A thermocouple, wherein the tip of the thermocouple is positioned within the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1233166A JPH0395423A (en) | 1989-09-08 | 1989-09-08 | Thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1233166A JPH0395423A (en) | 1989-09-08 | 1989-09-08 | Thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0395423A true JPH0395423A (en) | 1991-04-19 |
Family
ID=16950758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1233166A Pending JPH0395423A (en) | 1989-09-08 | 1989-09-08 | Thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0395423A (en) |
-
1989
- 1989-09-08 JP JP1233166A patent/JPH0395423A/en active Pending
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