JPS5960330A - Temperature measuring device - Google Patents
Temperature measuring deviceInfo
- Publication number
- JPS5960330A JPS5960330A JP16978782A JP16978782A JPS5960330A JP S5960330 A JPS5960330 A JP S5960330A JP 16978782 A JP16978782 A JP 16978782A JP 16978782 A JP16978782 A JP 16978782A JP S5960330 A JPS5960330 A JP S5960330A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic material
- temperature
- thermal
- thermal anchor
- adiabatic
- 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
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
- G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
-
- 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
- G01K1/20—Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
Abstract
Description
【発明の詳細な説明】
［発明の属する技術分野］
本発明は断熱磁化あるいは断熱消磁の際の磁性体の温度
測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to an apparatus for measuring the temperature of a magnetic material during adiabatic magnetization or adiabatic demagnetization.
［従東技術とその問題点］
低温で対象物の温度を測定する時は温度計のリード線か
らの熱浸入の影響を防ぐだめ測温対象物と温度が近い場
所で金属ブロックにリード線を巻きつけて金属ブロック
をサーマル・アンカートシ室温部計測端子からの浸入熱
をサーマル・アンカーで吸収する方法が一般的である。[Juto technology and its problems] When measuring the temperature of an object at low temperatures, in order to prevent the influence of heat intrusion from the thermometer lead wire, connect the lead wire to a metal block in a place where the temperature is close to that of the object to be measured. A common method is to wrap a metal block around a thermal anchor and use the thermal anchor to absorb the heat that enters from the room temperature measurement terminal.
第１図は断熱Ｉｒｊｉ化・（断熱消磁の際の磁性体の温
度変化を測定する従来例である。磁性体（１）が真空容
器（２）の中に熱伝導率の低いベーク、 ＦＲＰ （ｆ
ｉｈｅｒｒｅｉｎｆｏｒｃｅｄ ｐｉン＋５ｔｉｃｓ
）等の支持材（７）で基板（８）に断熱的に固定されて
いる。真空容器（２）の外側に液体ヘリウム（ＴＯ）に
υ演された超電導電磁石（３）があり、この電磁石（３
）により１１Ｊ７熱真空中の磁性体（１）を磁化する。Figure 1 shows a conventional example of measuring the temperature change of a magnetic material during adiabatic demagnetization/demagnetization. f
iherreinforced pin+5tics
), etc., to the substrate (8) in an adiabatic manner. There is a superconducting electromagnet (3) heated by liquid helium (TO) outside the vacuum container (2), and this electromagnet (3)
) to magnetize the magnetic material (1) in a 11J7 thermal vacuum.
磁性体（１）ｔよ、磁気熱量効果により磁化するとｔａ
熱し消磁すると吸熱する。この時の磁性体（１）の温度
変化を、磁性体（１）の中に埋め込んだカーボン・グラ
ス抵抗温度計（イ）の抵抗を４端子〃ミで計測すること
によシ測定する。室温部計測端子につながるリード線（
６ａ）からの浸入熱をサーマル・アンカー（５）で吸収
することにより、温度側（４）への熱没入を少くし、磁
性体（１）と温度計（４）の温度差を極力小さくしてい
る。Magnetic material (1) t, when magnetized by magnetocaloric effect, ta
When heated and demagnetized, it absorbs heat. The temperature change of the magnetic body (1) at this time is measured by measuring the resistance of a carbon glass resistance thermometer (a) embedded in the magnetic body (1) using four terminals. Lead wire connected to the room temperature measurement terminal (
By absorbing the heat penetrating from 6a) with the thermal anchor (5), the heat sinking into the temperature side (4) is reduced, and the temperature difference between the magnetic material (1) and the thermometer (4) is minimized. ing.
変動磁場中での交流損失による発熱を避けるため、サー
マル・アンカー（５）および基板（８）は電気抵抗の大
きいステンレスでつくらｔｌ、磁場の小さい場所に置か
れている。In order to avoid heat generation due to alternating current loss in a fluctuating magnetic field, the thermal anchor (5) and substrate (8) are made of stainless steel with high electrical resistance and placed in a location with a small magnetic field.
川、−ヒの構Ｉノ（で断熱磁化・断熱消磁の際の磁性体
（１）の温度を測定する古、サーマル・アンカー（５１
の働きで室温部からの直接の熱浸入はおさえられるが、
断熱磁化・断熱消磁させる磁場を大きくする吉、磁性体
（１）の温度変化も大きくなり、必然的に１６１’に体
（１）と温度一定のサーマル・アン−／７− （５１ｔ
ｅの温度差も大きくなる。A thermal anchor (51) that measures the temperature of a magnetic material (1) during adiabatic magnetization and adiabatic demagnetization in the structure of Kawa, - Hi.
Direct heat penetration from the room temperature area is suppressed by the function of
By increasing the magnetic field for adiabatic magnetization and adiabatic demagnetization, the temperature change of the magnetic body (1) will also increase, and inevitably a thermal ann-/7- (51t
The temperature difference in e also increases.
例えばＧＧＧ （ガドリニウム・ガリウノ、・ガーネッ
ト）では、磁性体（１）の温度が４．２Ｊ（の状態から
磁場４，６テスラで断熱磁化するさ磁性体の温度は５Ｋ
にな’） 、Ｊｔ’ｆｉ Ｆｉ （８１とサーマル・ア
ンカー（５）の温度を５にとするとサーマル・アンカー
（５）と磁性体（１）の間には２０ Ｋもの温度差がで
き、この温度差に従って磁性体（１）からサーマル・ア
ンカー（５）に熱が流れるから正確な温度測定はできな
い。Ｊ５板（８）の温度を５にとすると、逆に磁性体（
１）の最初のス４度が１ｒ：、確に測定できない１、
断熱消磁の１合も事情は同じである。For example, in GGG (gadolinium galiuno, garnet), the magnetic material (1) is adiabatically magnetized in a magnetic field of 4.6 Tesla from a state where the temperature is 4.2 J (the temperature of the magnetic material is 5 K).
), Jt'fi Fi (If the temperature of 81 and the thermal anchor (5) is 5, there will be a temperature difference of 20 K between the thermal anchor (5) and the magnetic material (1), and this Accurate temperature measurement is not possible because heat flows from the magnetic material (1) to the thermal anchor (5) according to the temperature difference.If the temperature of the J5 plate (8) is set to 5, the magnetic material (
The situation is the same for 1) where the first 4 degrees is 1r: 1, which cannot be measured accurately, and 1, which is adiabatic demagnetization.
［発明の目的］
Ｍｌｌｖ３ｉｉ ；にＪ−ｂυ局υ （乙）本発明は−
にυ（（シた＜ｒｆ＝来の測定装置ａの欠点を改畏、ｌ
〜だもので、断熱磁化・断熱消磁で磁性体の温度が急激
に変化するときでも磁性体のＣ１１度を正Ｃ俗に測定で
きる温度測定装置を提供することを目的とする。[Object of the invention] Mllv3ii ; to J-bυ station υ (B) The present invention is -
niυ((shi<rf=Revising the shortcomings of the previous measuring device a, l
To provide a temperature measuring device capable of measuring the C11 degree of a magnetic material in a normal C manner even when the temperature of the magnetic material changes rapidly due to adiabatic magnetization and adiabatic demagnetization.
し発明の概要“１
本発明は、従来断熱磁化・断熱消磁で磁性体の温ＩＩｔ
が急激に変化してサーマル、アンカーとの間に大へな温
度差が生じることにより磁性体からサーマル・アンカー
にあるいはサーフ １／Ｌ、・−Ｔ ｙ カーから磁性
体に流れこんでいた熱を減少させるため磁性体に埋めこ
まれた温度泪とサーマル・アンカーを接続するリード線
を途中で同じ磁性体でできたブロックに熱接触よく巻き
つけて第２の一ザーーマル・アンカーとし、温度計への
直接的な熱の出入を防ぐことにより断熱磁化・断熱消磁
過程およびその直後の磁性体の温度を（正確に測定する
装置である。Summary of the Invention "1" The present invention is a method for increasing the temperature of magnetic materials by conventional adiabatic magnetization and adiabatic demagnetization.
The sudden change in temperature causes a large temperature difference between the thermal and the anchor, causing the heat that had flowed from the magnetic material to the thermal anchor or from the surf 1/L, -T y car to the magnetic material. In order to reduce the temperature drop, the lead wire that connects the thermal anchor to the temperature drop embedded in the magnetic material is wrapped halfway around a block made of the same magnetic material in good thermal contact to form a second thermal anchor, and then connected to the thermometer. This device accurately measures the temperature of the magnetic material during the adiabatic magnetization/demagnetization process and immediately after that by preventing direct heat input and output.
第２の゛す°−マル・アンカーすなわち磁性体サーマル
・アノカーは電磁石の中心にある測定対象の磁性体に近
い位置に断熱的に固定ｒる。A second thermal anchor, ie, a magnetic thermal anode, is adiabatically fixed at a position near the magnetic material to be measured at the center of the electromagnet.
第１のサーマル・アンカーと磁性体サー−−７／１．・
アンカーが設ｉｉｔされた基板の温度、磁性体の温度が
共に′ｖ４の仄態から１折熱磁化ｉ〜、磁性１本・］）
湛度がＴ２にな、徳きする。この時、磁性体リーーマル
・−アノカも磁性体と同様の温度変化をするが、磁場中
心かられずかに離れだ位１１にあるからその到−ａ！温
度はＴ２よりもわずかに△Ｔだけ低いＴ２−１へ′１゛
である。従ってリード線の熱伝導率をλ、磁性体サーマ
ル・アンカーと温度計を結ぶリード線の長さを１２、リ
ード線の全断面積全人とすると断熱磁化過程終了直後の
磁性体から磁性体サーマ／し・アンカーへの単位時間あ
たりの熱浸入門、は２人・ ／／ｚとなる。First thermal anchor and magnetic body 7/1.・
When the temperature of the substrate on which the anchor is installed and the temperature of the magnetic material are both 'v4, thermal magnetization i~ and magnetic one piece])
When the degree of immersion becomes T2, it becomes virtuous. At this time, the temperature of the magnetic material Real-Anoka also changes in the same way as the magnetic material, but since it is located at a distance of 11 from the center of the magnetic field, it will not reach that temperature. The temperature is '1' to T2-1, which is slightly ΔT lower than T2. Therefore, assuming that the thermal conductivity of the lead wire is λ, the length of the lead wire connecting the magnetic thermal anchor and the thermometer is 12, and the total cross-sectional area of the lead wire is the whole person, the magnetic thermal conductivity from the magnetic material immediately after the adiabatic magnetization process is completed. The introduction to heat immersion per unit time for /shi/anchor is 2 people//z.
一方、磁性体サーマル アンカーを使Ｊ）なかった場合
の熱浸入数は、第１のサーマル・アンカーから温度計ま
でのリード線の長さを双方の場合で長さを１１として、
λＡ（Ｔ２−Ｔ１）／（ｌ！＋１２）みなる。On the other hand, the number of heat penetrations when no magnetic thermal anchor is used is as follows, assuming that the length of the lead wire from the first thermal anchor to the thermometer is 11 in both cases.
λA(T2-T1)/(l!+12).
１１を長くしＣ１１→−１２５ゴ２の１０陪以北の長さ
にとるのは、多くの局舎断熱真空容器の限られた空間で
はむずかしいが、磁注体−リ゛−マル・アンカーのｆ１
″Ｌ置を磁１易中心に近５けることによゆΔ′１゛をＴ
２−′■゛１の大きさの１／ｉｏ以Ｆにするこ吉（」［
［−較的容易−Ｃある。さらに、リード線を長くすれば
交流損失の影響も無視でへ、ｔくなる。It is difficult to lengthen C11 to a length north of 10 degrees from C11 to -125 Go2 in the limited space of many station insulated vacuum vessels, but it is f1
By placing the ``L position near the center of the magnetic field, Δ'1゛ can be calculated as T.
2-′■゛Kokichi (”[
[-Relatively easy-C. Furthermore, if the lead wire is made longer, the effect of AC loss can be ignored and the result will be reduced to t.
従っテ磁性ザー７ル・アンカーを利用した用台の方が熱
浸入１１１をはるかに小さくできる。Therefore, the heat infiltration 111 can be much smaller in a stand that utilizes a magnetic thermal anchor.
μ上の構成で１でη熱磁化過程およびその直後の磁性体
の温度を畢定常的に測定することが可能上なる０
断熱消磁のｊｌ、ｊ自′でも、断熱消磁過程およびその
直後に磁１イ１：体、に磁性体サーマ７し・アンカーの
温度差は十分小さくでへるから従来装置に比べて正確な
温度測定が１］］゛能である０
［発明の効果１
本発明による温度測定装置を用いれば、断熱磁化・断熱
消磁で磁性体の温度が急激に変る時でもリード線を通し
ての温度計への熱浸入を小さくでき、従来装面に比べて
測定誤差の極めて小さい温度計測ができるようになった
。With the configuration on μ, it is possible to constantly measure the temperature of the magnetic material during the thermal magnetization process and immediately after the η thermal magnetization process. 1-1: Since the temperature difference between the magnetic body and the anchor is sufficiently small, it is possible to measure temperature more accurately than conventional devices.0 [Effect of the invention 1 According to the present invention By using a temperature measurement device, even when the temperature of the magnetic material changes rapidly due to adiabatic magnetization and adiabatic demagnetization, it is possible to reduce the amount of heat that enters the thermometer through the lead wire, allowing temperature measurement with extremely small measurement errors compared to conventional devices. Now you can.
［発明の実施例］
本発明の代表的実施例を第２図にｔｉｌｌ Ｌで説明す
る。従来例を示した第１図のサーマル・アンカー（５）
と温度計（４）を接続するリード線の途中部分を磁性体
（１）と同じ磁性体でできた円柱形のブロック０１）に
巻きつけ、８ｇ２のサーマル・アンカーとする。[Embodiments of the Invention] A typical embodiment of the present invention is illustrated in FIG. 2 until L. Thermal anchor (5) in Figure 1 shows a conventional example
Wrap the middle part of the lead wire connecting the thermometer (4) and the magnetic material (1) around a cylindrical block 01) made of the same magnetic material as the magnetic material (1) to form an 8g2 thermal anchor.
この磁性体サーマル・アンカー（１１〕は熱伝導率の低
いＦＲＰの支持棒（１２１で基板（８）に断熱的に固定
する。This magnetic thermal anchor (11) is adiabatically fixed to the substrate (8) using an FRP support rod (121) with low thermal conductivity.
磁性体サーマル・アンカーに巻きつけるリード線は磁性
体との熱接触を良くするために絶縁被覆のできるだけ薄
いもの、交流損失の影響を避けるだめできるだけ細いも
のを使用する。The lead wires to be wound around the magnetic thermal anchor should have as thin an insulating coating as possible to improve thermal contact with the magnetic material, and should be as thin as possible to avoid the effects of AC loss.
磁性体サーマル・アンカーのｆ〜ｒ置装よ測定対象磁性
体のうける磁場に近い磁場を感じる場所とする。The f to r device of the magnetic thermal anchor should be located in a place where it can sense a magnetic field close to the magnetic field experienced by the magnetic material to be measured.
他の構成は第１図の従来例と同一である。The other configurations are the same as the conventional example shown in FIG.
以上の構成により、断熱磁化・断面消磁過程および断熱
磁化・断熱消磁直後の磁性体の温度をＩＥ確に知ると吉
ができる。With the above configuration, it is possible to accurately know the temperature of the magnetic material during the adiabatic magnetization/cross-sectional demagnetization process and immediately after the adiabatic magnetization/diabatic demagnetization.
第１図は断熱磁化・断熱消磁の際の温度変化を測定する
従来例を示す断面図、第２図は本発明による温度測定法
の実施例を示す断面図である。
（１）・・・磁性体、（２）・・・真空容器、（３）・
・・超伝導心磁石、（４）・・・カーボン・グラス温度
計、（５）・・・サーマル・アンカー、
（６ａ）・・室温部計測端子につながるリード線、（６
ｂ）、（６ｃ）・・・リード線、（力・・・支持材、（
８）・・・基板、（９）支持パイプ、（１０）・・液体
ヘリウム、（＋１１・・・磁性体サーマル・アンカー。
（ｌり・・支持棒、）
代理人 弁理士 則 近 意 佑
（ほか１名）
第１図
第２図FIG. 1 is a sectional view showing a conventional example of measuring temperature changes during adiabatic magnetization and adiabatic demagnetization, and FIG. 2 is a sectional view showing an embodiment of the temperature measurement method according to the present invention. (1)...magnetic material, (2)...vacuum container, (3)...
...Superconducting core magnet, (4)...Carbon glass thermometer, (5)...Thermal anchor, (6a)...Lead wire connected to room temperature measurement terminal, (6
b), (6c)...Lead wire, (force...support material, (
8)...Substrate, (9) Support pipe, (10)...Liquid helium, (+11...Magnetic thermal anchor. (and 1 other person) Figure 1 Figure 2
Claims (1)
のｉＬＡ度を測定する温度測定装置において、前記試料
と同じ磁性体材料からなるサーマル・アンカーを用いて
温度Ｈ［のリード線からの熱浸入を減少させ、前記磁性
体の試料の温度を測定することを特徴とする温度測定装
置。In a temperature measuring device that measures the iLA degree of a magnetic sample that changes rapidly due to adiabatic magnetization and adiabatic demagnetization, a thermal anchor made of the same magnetic material as the sample is used to measure heat penetration from the lead wire at a temperature of H. A temperature measuring device for measuring the temperature of the magnetic sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16978782A JPS5960330A (en) | 1982-09-30 | 1982-09-30 | Temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16978782A JPS5960330A (en) | 1982-09-30 | 1982-09-30 | Temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5960330A true JPS5960330A (en) | 1984-04-06 |
Family
ID=15892863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16978782A Pending JPS5960330A (en) | 1982-09-30 | 1982-09-30 | Temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5960330A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0262308A2 (en) * | 1986-07-10 | 1988-04-06 | Abonyi, Gabrielle | Electrical thermometer |
| US10434574B2 (en) | 2016-11-16 | 2019-10-08 | Sodick Co., Ltd. | Laminating and shaping apparatus |
-
1982
- 1982-09-30 JP JP16978782A patent/JPS5960330A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0262308A2 (en) * | 1986-07-10 | 1988-04-06 | Abonyi, Gabrielle | Electrical thermometer |
| EP0262308A3 (en) * | 1986-07-10 | 1989-07-26 | Abonyi, Gabrielle | Electrical thermometer |
| US10434574B2 (en) | 2016-11-16 | 2019-10-08 | Sodick Co., Ltd. | Laminating and shaping apparatus |
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