JPS6331953B2 - - Google Patents
Info
- Publication number
- JPS6331953B2 JPS6331953B2 JP55153551A JP15355180A JPS6331953B2 JP S6331953 B2 JPS6331953 B2 JP S6331953B2 JP 55153551 A JP55153551 A JP 55153551A JP 15355180 A JP15355180 A JP 15355180A JP S6331953 B2 JPS6331953 B2 JP S6331953B2
- Authority
- JP
- Japan
- Prior art keywords
- thermocouple
- protection tube
- protective tube
- temperature
- tube
- 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
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 description 11
- 239000012212 insulator Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Description
【発明の詳細な説明】
本発明は熱電対をセツトするのに充分余裕のあ
る広い場所から余裕のない狭い場所まで、著しく
速かにその場所の高温度の測定が可能な堅牢な高
温度測定用瞬応型熱電対に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a robust high-temperature measurement device that can measure high temperatures extremely quickly, from large spaces with sufficient room for setting thermocouples to narrow spaces with no room. This relates to instant response type thermocouples.
従来の高温用熱電対は第１図にその概略断面図
を示したように、保護管１は直径10、12、15、
18、20、22mm等のものを使用し、パイプの片方
を封じて作成され、磁器絶縁管例えば通常は碍子
２を使用し、CA、IC、CC、CRC、RR等よりな
る一対の熱電対素子３を碍子２によつて絶縁して
保護管１に納めたものである。熱電対素子３の一
方の先端は溶接によつて接続され電気的に保護管
からは離れて測温接点４を形成する。 As shown in the schematic cross-sectional view of the conventional high-temperature thermocouple in Figure 1, the protective tube 1 has a diameter of 10, 12, 15,
A pair of thermocouple elements made of CA, IC, CC, CRC, RR, etc. is made by sealing one end of a pipe using 18, 20, 22 mm, etc., and using a porcelain insulating tube, usually insulator 2. 3 is insulated by an insulator 2 and housed in a protective tube 1. One tip of the thermocouple element 3 is connected by welding and is electrically separated from the protection tube to form a temperature measuring contact 4.
保護管１と碍子２との空間は通常は空気４の雰
囲気である。そのため高温においては熱電対素子
の空気酸化による破損がはげしく、応答速度が悪
い欠点がある。 The space between the protective tube 1 and the insulator 2 is normally in an atmosphere of air 4. Therefore, at high temperatures, the thermocouple element is severely damaged by air oxidation, and the response speed is poor.
保護管１としては
(イ) 耐熱性に富み内部に外部のガスが混入しない
ように気密にする。 The protection tube 1 is (a) highly heat resistant and airtight to prevent outside gas from getting inside.
(ロ) 高温中においても機械的強度があり、振動衝
撃に耐え、また温度の急激な変化に耐える。(b) It has mechanical strength even at high temperatures, can withstand vibration and shock, and can withstand sudden changes in temperature.
(ハ) 高温で熱電対に有害なガスを出さない。(c) Do not emit harmful gases to thermocouples at high temperatures.
の条件を満足することが要求される。is required to satisfy the following conditions.
本発明者は上記の要求に応え、従来の熱電対の
欠点を改良すべく鋭意研究した結果、高温におい
ても充分な機械的強度を保持し、保護管内に空気
の存在する空間を無くし、耐熱性、耐食性が大で
応答速度が大で、耐用寿命の長い高温用瞬応型熱
電対を発明するに至つたもので、本発明は酸化マ
グネシウム固体粉末を充填した円筒形保護管中に
上記の如き通常使用される熱電対素子を封入し、
該保護管を絞機にかけてその直径を絞ることによ
つて保護管内の空気を排出して製造された高温用
瞬応型熱電対を提供するものである。 In response to the above requirements, the inventor of the present invention has conducted intensive research to improve the shortcomings of conventional thermocouples.As a result, the inventors have achieved sufficient mechanical strength even at high temperatures, eliminated the space where air exists within the protective tube, and achieved heat resistance. This led to the invention of a high-temperature instantaneous thermocouple with high corrosion resistance, high response speed, and long service life. Enclose the thermocouple element used,
The present invention provides a high-temperature instantaneous thermocouple manufactured by applying the protective tube to a wringer to reduce its diameter and thereby exhausting air within the protective tube.
次の図面によつて本発明を詳細説明する。 The invention will be explained in detail with reference to the following drawings.
第２図は本発明の一実施例の概略側面図、第３
図は第２図のＡ−Ａ断面図を示す。 FIG. 2 is a schematic side view of one embodiment of the present invention;
The figure shows a sectional view taken along the line AA in FIG.
本発明は保護管１の材質としてSuS−304、
SuS−316、SuS−310S、インコネル等を使用し
て上記のエレメントよりなる熱電対を製作し、保
護管内に従来使用されている磁気性絶縁管例えば
碍子３等を全然使用することなく保護管内に絶縁
物質として溶融温度（Ｍ、Ｐ）の高い酸化マグネ
シウム（Ｍ、P2800℃）の固体粉末６を充填し、
第２〜第３図に示すように熱電対素子３を封じ、
更にこれを絞機にかけて保護管１の外径を５〜15
％程度絞つて作成する。 The present invention uses SuS-304 as the material of the protection tube 1.
A thermocouple consisting of the above elements is manufactured using SuS-316, SuS-310S, Inconel, etc., and it is placed inside the protective tube without using the magnetic insulating tube, such as insulator 3, that is conventionally used inside the protective tube. Filled with solid powder 6 of magnesium oxide (M, P 2800°C) with a high melting temperature (M, P) as an insulating material,
As shown in FIGS. 2 and 3, the thermocouple element 3 is sealed,
Furthermore, apply this to a wringer to reduce the outer diameter of protection tube 1 to 5 to 15.
% and create it.
例えば外径22mmの保護管の場合は18〜20mm
程度の外径になるように絞るのである。 For example, for a protection tube with an outer diameter of 22 mm, it is 18 to 20 mm.
It is narrowed down to a certain outer diameter.
然るときは保護管内の空気が排除され、かつ保
護管１と熱電対素子３とが酸化マグネシウム６を
介在させて密着し、そのため絶縁が完全になり、
高温用瞬応型熱電対が完成される。 In this case, the air in the protective tube is removed, and the protective tube 1 and thermocouple element 3 are brought into close contact with each other with the magnesium oxide 6 interposed, so that the insulation is complete.
A high-temperature instantaneous thermocouple is completed.
上記の様にして製造された本発明の瞬応型熱電
対は通常使用される温度から酸化マグネシウムの
溶融温度の2800℃附近の高温迄の温度範囲に使用
可能であり応答速度が著しく向上し瞬応型であ
り、しかも耐用年数が増加し、かつ熱電対自体が
コンパクトに作成可能な数々の利点がある。 The instant-response type thermocouple of the present invention manufactured as described above can be used in a temperature range from normally used temperatures to high temperatures around 2800℃, which is the melting temperature of magnesium oxide, and has a significantly improved response speed. Moreover, there are many advantages in that the service life is increased and the thermocouple itself can be made compactly.
本発明の瞬応型熱電対の保護管の外径Ｄ、その
肉厚ｔ、熱電対素子のワイヤーの外径ｄは第３図
に示す如く、自在な寸法が採用可能であるが例え
ば、Ｄ、1.0〜8.0mm、ｔ、0.15〜0.7mm、ｄ、0.2〜
1.3mm程度に選ぶと好適である。 As shown in FIG. 3, the outer diameter D of the protective tube of the instantaneous thermocouple of the present invention, its wall thickness t, and the outer diameter d of the wire of the thermocouple element can be freely selected. 1.0~8.0mm, t, 0.15~0.7mm, d, 0.2~
It is preferable to select it to be about 1.3 mm.
第１図は従来の熱電対の概略断面図、第２図は
本発明の高温用瞬応型熱電対の一実施例の概略断
面図、第３図は第２図Ａ−Ａ断面の拡大図を示
す。
１……保護管、２……碍子、３……熱電対素
子、４……熱電対素子の測温接点、５……空気雰
囲気、６……酸化マグネシウム固体粉末、Ｄ……
保護管外径、ｔ……保護管の肉厚、ｄ……熱電対
素子の外径。
Fig. 1 is a schematic sectional view of a conventional thermocouple, Fig. 2 is a schematic sectional view of an embodiment of the high temperature instantaneous thermocouple of the present invention, and Fig. 3 is an enlarged view of the cross section taken along line A-A in Fig. 2. show. DESCRIPTION OF SYMBOLS 1... Protection tube, 2... Insulator, 3... Thermocouple element, 4... Temperature measuring junction of thermocouple element, 5... Air atmosphere, 6... Magnesium oxide solid powder, D...
Protection tube outer diameter, t...Thickness of protection tube, d...Outer diameter of thermocouple element.
Claims (1)
保護管内に通常使用される熱電対素子を封入し、
該円筒形保護管を絞機にかけて保護管の直径を絞
ることによつて保護管内の空気を排除してなる高
温用瞬応型熱電対。1 A commonly used thermocouple element is enclosed in a cylindrical protection tube filled with solid magnesium oxide powder,
A high-temperature instantaneous thermocouple that is made by applying the cylindrical protection tube to a wringer to reduce the diameter of the protection tube to eliminate air within the protection tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55153551A JPS5776887A (en) | 1980-10-30 | 1980-10-30 | Quick response thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55153551A JPS5776887A (en) | 1980-10-30 | 1980-10-30 | Quick response thermocouple |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5776887A JPS5776887A (en) | 1982-05-14 |
| JPS6331953B2 true JPS6331953B2 (en) | 1988-06-27 |
Family
ID=15564973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55153551A Granted JPS5776887A (en) | 1980-10-30 | 1980-10-30 | Quick response thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5776887A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62112167U (en) * | 1986-01-08 | 1987-07-17 | ||
| WO2009113126A1 (en) * | 2008-03-11 | 2009-09-17 | 日本電測株式会社 | Temperature sensor |
-
1980
- 1980-10-30 JP JP55153551A patent/JPS5776887A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5776887A (en) | 1982-05-14 |
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