JPS5987883A - Cryostat - Google Patents
CryostatInfo
- Publication number
- JPS5987883A JPS5987883A JP57197493A JP19749382A JPS5987883A JP S5987883 A JPS5987883 A JP S5987883A JP 57197493 A JP57197493 A JP 57197493A JP 19749382 A JP19749382 A JP 19749382A JP S5987883 A JPS5987883 A JP S5987883A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerator
- cooled
- heat
- shielding body
- cryostat
- 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
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は極低温下で動作する1戊器、特に超電導応用機
器ヲ憾1代温に雄偉するクライオスタットに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a cryostat that operates at extremely low temperatures, particularly to a cryostat that is suitable for use in superconducting application equipment at temperatures as low as 100 degrees.
比奴的小形の超電導機器を冷却する場合、小形の冷凍機
をI史用することが考えられる。第1図に従来の方法の
一例を示す。1が被冷却体である超電導コイル、2が超
電?!)コイルτ冷却する液体へリウム、3が超rt
z>コイル1及び液体ヘリウム2を収納する容器で、P
、孕容器4り中に[す)1熱支持体51rして売行され
ているっ6fJ、真空容器4の内部に容器3を曲りよう
にしこm1111′されたじゃへい体で冷媒によシ液体
窒卓錨度刊近に冷やさイしる。When cooling extremely small superconducting equipment, it is conceivable to use a small refrigerator. FIG. 1 shows an example of a conventional method. 1 is the superconducting coil which is the object to be cooled, and 2 is the superconductor? ! ) Liquid helium to cool the coil τ, 3 is above rt
z> Container containing coil 1 and liquid helium 2, P
, 6fJ is sold as a thermal support 51r inside the vacuum container 4, and is made by inserting the container 3 inside the vacuum container 4 so as to bend it. The liquid nitrogen is cooled down to near the surface of the table.
7は(1デ却の初、+4/Jに液1本ヘリウノ・ま/仁
はパー1本ヘリウす
ムを出し入れるdで2本に分けることもある。8へ
は、ギホードマクマポン・す・fクルめるいはツルペイ
・サイクルと呼f1.Iする小形冷4(Iの膨張機でシ
リンダ9の内側に蓄冷器忙内賊するピストン102>X
h ツテ4 tub部11によ#) ((:、 Hp
4+4bL−Cいる。7 is (first of 1 dere, +4/J with 1 liquid, Heliuno, Ma/Jin, 1 par, helium, which can be divided into 2 with d. To 8, Gihodo Makumapon, The cycle is called the Tsurupei cycle f1.I is a small cold 4 (piston 102 that encloses a regenerator inside the cylinder 9 in the expansion machine of I)
h Tute 4 Tub part 11 #) ((:, HP
There are 4+4bL-C.
第1図は2段の膨張機栄示し、′t5段のりj; ;l
iM都で寒冷を発生し、この摩冷ゲ取り出ず冷却111
2及び13が固定さ扛でいる。第1の、’ij”父摂器
14を4.・≠て供給される冷媒ヘリウノ・Qよ冷却管
12で冷却され、その後、しやへい体6を冷眉1しで迅
2の熱交換器15に入り、次いで(宜肩t’Hiaでさ
らに添置がFげられ、第3の熱父撲器16金tli↓つ
゛〔膨張弁17で膨張し一部液化する。冷媒は凝縮器1
8で吸熱して、第3の熱変換器16、第2の熱変換器1
5、第1の熱変換器14のそれぞれ低圧側を通って常温
の圧縮機系19へ戻る。l彪張磯及び熱変換器と圧縮機
系は連結管20及び21で連結さ扛ている。圧縮機系に
は、圧縮機本体、冷却器、圧力バツ7アー、フィルタま
たンま梢製イ:;1が言まれる。Figure 1 shows a two-stage expander;
Cold weather occurred in iM city, and this cooling gear was not removed and cooling 111
2 and 13 are fixed. The refrigerant Heliuno Q supplied through the first refrigerant refrigerant 14 is cooled by the cooling pipe 12, and then the heat exchanger 12 is heated through the cooling body 6. The refrigerant enters the condenser 15, and is then further added to the third heat exchanger 16, where it expands in the expansion valve 17 and partially liquefies.
8, the third heat converter 16 and the second heat converter 1
5. Return through the respective low pressure side of the first heat converter 14 to the room temperature compressor system 19. The heat converter and compressor system are connected by connecting pipes 20 and 21. The compressor system includes a compressor main body, a cooler, a pressure tank, a filter, and a windshield.
装置稼動中は注入弁22を閉じ又、超電導コイル1は凝
縮器18内の液体よりわずかvC+aいtiltの液体
ヘリウムで冷却されることとなo0従従来では、J彪張
1幾8、駆動部11、及び熱変換器14,15.16.
圧tI戦糸19をj゛ひ循環系にトラブルがおこったと
き、冷凍機としCの運転が一時的に不可能になる。この
11寸、d器3に蓄えられていた液体ヘリウム2の気化
熱によって冷却は継続できる。い、冷凍機が1q−止し
ているためしやへい体6の冷却も停止し、徐々に温度が
上昇する結果、熱侵入が壇太し液体ヘリウム2の消費が
はやくなる。冷凍機停止時の慎失壇加を5少しでも抑え
ることは、装置の信頼性確保上き4)めで重要である。When the device is in operation, the injection valve 22 is closed, and the superconducting coil 1 is cooled with liquid helium, which is slightly more vC+a tilt than the liquid in the condenser 18. 11, and heat converters 14, 15.16.
When a trouble occurs in the circulation system using the pressure tI war thread 19, operation of the refrigerator C becomes temporarily impossible. Cooling can be continued by the heat of vaporization of the liquid helium 2 stored in the 11-inch vessel 3. Since the refrigerator is stopped at 1q, the cooling of the helium body 6 is also stopped, and the temperature gradually rises. As a result, heat infiltration increases and liquid helium 2 is consumed more quickly. 4) It is important to suppress the inaccuracies when stopping the refrigerator as much as possible in order to ensure the reliability of the equipment.
本発明の目的は、冷凍機が停止した時の侵入熱増大を極
力抑えたフライオスタラ)1提供することにある。An object of the present invention is to provide a fried cod 1) in which an increase in heat penetration when the refrigerator is stopped is suppressed as much as possible.
本発明は、通常冷凍機によりて冷却されているじゃへい
体を、冷凍機停止時は被冷却体を直接冷却している冷媒
の気化ガスの顕熱によって冷却するようにしたものであ
る。According to the present invention, a barrier body that is normally cooled by a refrigerator is cooled by the sensible heat of vaporized gas of a refrigerant that directly cools the object to be cooled when the refrigerator is stopped.
以下、本発明の一実施ρりを小27によυ説明する。第
2図では冷媒の流れ系統奮異線で示しである。第1図の
従来例と異fJ、あの11、しやへい休6の冷却′ぎ3
0が、冷凍機の循環系統につながっていることに加え、
第2の冷却・faxが容器3中での気化ヘリウム32を
流J−ようにしてしやへい休6に取り付けられている点
にりる。冷凍機が正常に作動している最中はパルプ33
は閉じたままで、冷凍機の作動が停止したときパルプ3
3を開く。Hereinafter, one implementation of the present invention will be explained to a 27th grade student. In FIG. 2, the flow system of the refrigerant is indicated by a line. Different from the conventional example in Fig. 1 fJ, that 11, cooling 3
0 is connected to the circulation system of the refrigerator, and
The point is that the second cooling/fax is attached to the cooling chamber 6 to flow the vaporized helium 32 in the container 3. Pulp 33 when the refrigerator is operating normally.
remains closed, and when the refrigerator stops operating, pulp 3
Open 3.
なお、配管34と放出弁35及び安全弁3(irl第1
図で省略したものであるが、初期冷却時のガス抜きおよ
び非常時の安全対策として使用さ社る。In addition, the piping 34, the release valve 35, and the safety valve 3 (irl first
Although omitted from the figure, it is used to vent gas during initial cooling and as a safety measure in emergencies.
いま、容器3中でIWの熱負荷がめったとすると、液体
ヘリウム2は大気圧Fでおよそ0.05g/S蒸発する
。気化ヘリウムの比熱は約5.2J/(g−K)なので
、4.2Kから80 Kまで温度上昇するときに吸収す
る熱は0.05x5.2x (80−4,2)L=。Now, if the heat load of the IW in the container 3 is rare, the liquid helium 2 evaporates at atmospheric pressure F by approximately 0.05 g/S. The specific heat of vaporized helium is approximately 5.2 J/(g-K), so the heat absorbed when the temperature rises from 4.2 K to 80 K is 0.05x5.2x (80-4,2)L=.
20Wある。すなわち、しやへい体6での熱負荷が20
Wあっても、しやへい体6の温IJCk 80 Kに冷
却維持できることを意味する。また、初期冷却時にパル
プ33を開ければ液体ヘリウム大量注入VC伴い大量に
気化するヘリウムの顕熱を利用して、しやへい体6の初
期冷却、のるいは膨張機8や熱交瑛器14,15.16
の初期冷却の迅速化が可能になる効果もある。There is 20W. That is, the heat load on the flexible body 6 is 20
This means that even if W is present, the temperature of the flexible body 6 can be maintained at IJCk 80 K. In addition, if the pulp 33 is opened at the time of initial cooling, the sensible heat of the helium that vaporizes in large quantities with the injection of a large amount of liquid helium is used to initially cool the shrinkage body 6, expander 8, and heat exchanger 14. ,15.16
This also has the effect of making it possible to speed up the initial cooling of the water.
以上述べた如く本発明によれば、冷凍礪改障時における
じゃへい体温度の上昇を)2(化した冷媒の顕熱利用に
より低減し、侵入熱増大を抑えた信頼性の商いクライオ
スタットを提供するという効果がある。As described above, the present invention provides a reliable cryostat that reduces the increase in the temperature of the enclosure when a refrigeration pit is damaged by utilizing the sensible heat of the converted refrigerant, and suppresses the increase in heat intrusion. It has the effect of
第1図は従来の−S:施例全示す向111図、第2図は
本発明の一実施vllを示す系統図でめる。
3・・・低温y器、4・・・具空容器、6・・・し−や
へい体、8・・・膨張機、14,15.16・・・熱変
換器、18茅 1 ロ
葛2図FIG. 1 is a diagram 111 showing all the conventional -S: embodiments, and FIG. 2 is a system diagram showing one embodiment of the present invention. 3... Low-temperature container, 4... Empty container, 6... Shi-yahei body, 8... Expander, 14, 15.16... Heat converter, 18 1 Rokatsu Figure 2
Claims (1)
その周囲ケ包囲するじゃへい体、これらを包みこむA空
容器、該低温′#器内に設けられた凝縮器に寒冷を供給
するだめの冷凍磯系とからなるクライオスタットにおい
て、該冷凍機停止時には該被冷却体冷却用冷媒液の気化
ガスを直接1.災しゃへい体の冷却に利用するだめの冷
却配肯が付〃■されているとと全特徴とするクライオス
タット。A cooled object that operates at extremely low temperatures, a low-temperature container that houses it,
In a cryostat, which consists of a cage surrounding the surrounding area, an empty container A enclosing these, and a freezing system that supplies cold to a condenser installed in the cryostat, when the cryocooler is stopped, The vaporized gas of the refrigerant liquid for cooling the object to be cooled is directly 1. A cryostat that is characterized by the fact that it is equipped with a cooling system that can be used to cool the body during disasters.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57197493A JPS5987883A (en) | 1982-11-12 | 1982-11-12 | Cryostat |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57197493A JPS5987883A (en) | 1982-11-12 | 1982-11-12 | Cryostat |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5987883A true JPS5987883A (en) | 1984-05-21 |
Family
ID=16375383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57197493A Pending JPS5987883A (en) | 1982-11-12 | 1982-11-12 | Cryostat |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5987883A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5036092A (en) * | 1973-07-28 | 1975-04-04 | ||
JPS52116190A (en) * | 1976-03-26 | 1977-09-29 | Hitachi Ltd | Cryostat |
-
1982
- 1982-11-12 JP JP57197493A patent/JPS5987883A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5036092A (en) * | 1973-07-28 | 1975-04-04 | ||
JPS52116190A (en) * | 1976-03-26 | 1977-09-29 | Hitachi Ltd | Cryostat |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5586437A (en) | MRI cryostat cooled by open and closed cycle refrigeration systems | |
US20070245749A1 (en) | Closed-loop precooling of cryogenically cooled equipment | |
JPS6128907B2 (en) | ||
JPH0424617B2 (en) | ||
JP4595121B2 (en) | Cryogenic refrigerator using mechanical refrigerator and Joule Thomson expansion | |
JP2008538856A (en) | Cryostat assembly | |
JPH11248326A (en) | Chiller | |
JPS5987883A (en) | Cryostat | |
JPH05296010A (en) | Hydrogen oxygen combustion steam turbine engine | |
JPH09113052A (en) | Freezer | |
JP2007078310A (en) | Cryogenic cooling device | |
JPS60178260A (en) | Cryogenic refrigerator | |
JP2003086418A (en) | Cryogenic device | |
US11749435B2 (en) | Pre-cooling and removing ice build-up from cryogenic cooling arrangements | |
RU2057653C1 (en) | Cryostat for magnetic suspension vehicle | |
JP2007088146A (en) | Cryostat | |
RU2011129C1 (en) | Magnetic suspension vehicle cryostat | |
JPS59117281A (en) | Cooling apparatus | |
JPS61116250A (en) | Superconductive device and cooling method thereof | |
JPH0370914B2 (en) | ||
JP2602982B2 (en) | Cooling system | |
JPS63299181A (en) | Superconducting apparatus | |
JPS58166780A (en) | Superconductive electronic device | |
JPH054530U (en) | Liquefied gas circulation device | |
JPH04257665A (en) | Supercritical helium circulation device |