JP4736047B2 - Cooling system - Google Patents

Cooling system Download PDF

Info

Publication number
JP4736047B2
JP4736047B2 JP2006102659A JP2006102659A JP4736047B2 JP 4736047 B2 JP4736047 B2 JP 4736047B2 JP 2006102659 A JP2006102659 A JP 2006102659A JP 2006102659 A JP2006102659 A JP 2006102659A JP 4736047 B2 JP4736047 B2 JP 4736047B2
Authority
JP
Japan
Prior art keywords
pipe
tube
heat
cooling system
refrigerator
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 - Fee Related
Application number
JP2006102659A
Other languages
Japanese (ja)
Other versions
JP2007278550A (en
Inventor
久直 尾形
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanazawa Institute of Technology (KIT)
Original Assignee
Kanazawa Institute of Technology (KIT)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kanazawa Institute of Technology (KIT) filed Critical Kanazawa Institute of Technology (KIT)
Priority to JP2006102659A priority Critical patent/JP4736047B2/en
Publication of JP2007278550A publication Critical patent/JP2007278550A/en
Application granted granted Critical
Publication of JP4736047B2 publication Critical patent/JP4736047B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/17—Re-condensers

Description

本発明は、冷却システムに関し、さらに詳しくは、液体ヘリウムの供給管路での熱侵入を抑制し、供給管路を長くすることが出来る冷却システムに関する。   The present invention relates to a cooling system, and more particularly, to a cooling system capable of suppressing heat intrusion in a liquid helium supply line and lengthening the supply line.

従来、液体ヘリウムを冷凍機から供給管路を通してデュワーに供給する冷却システムが知られている（特許文献１参照。）。
特開２０００−３０４３６５号公報 Conventionally, a cooling system for supplying liquid helium from a refrigerator to a dewar through a supply pipe line is known (see Patent Document 1).
JP 2000-304365 A

上記従来の冷却システムでは、供給管路を内管と外管とにより構成し、内管に液体ヘリウムを通し、内管と外管とを真空断熱している。
しかし、熱放射による熱侵入が大きいため、供給管路を長くすることが出来ない問題点があった。
そこで、本発明の目的は、液体ヘリウムの供給管路での熱侵入を抑制し、供給管路を長くすることが出来る冷却システムを提供することにある。 In the above conventional cooling system, the supply pipe line is constituted by an inner pipe and an outer pipe, liquid helium is passed through the inner pipe, and the inner pipe and the outer pipe are vacuum insulated.
However, since the heat intrusion due to heat radiation is large, there is a problem that the supply pipe cannot be lengthened.
Accordingly, an object of the present invention is to provide a cooling system capable of suppressing the heat intrusion in the supply line of liquid helium and lengthening the supply line.

第１の観点では、本発明は、液体ヘリウム（１Ｌ）を冷凍機（２）から供給管路（３）を通してデュワー（４）に供給する冷却システムであって、前記供給管路（３）は、液体ヘリウム（１Ｌ）を通す内管（３ｉ）と、前記内管（３ｉ）の外周を取り巻き該内管（３ｉ）と真空断熱された外管（３ｏ）とを有し、前記供給管路（３）の主要部分の前記内管（３ｉ）と外管（３ｏ）の間には熱シールド管（５）が挿入され、前記熱シールド管（５）が前記冷凍機（２）からの熱伝導により冷却されることを特徴とする冷却システム（１００）を提供する。
上記第１の観点による冷却システム（１００）では、供給管路（３）を構成する内管（３ｉ）と外管（３ｏ）の間が真空断熱されているだけでなく、冷凍機（２）からの熱伝導で冷却された熱シールド管（５）の挿入により熱放射が遮断されている。このため、供給管路（３）での熱侵入を抑制でき、供給管路を長くすることも可能になる。 In a first aspect, the present invention is a cooling system for supplying liquid helium (1 L) from a refrigerator (2) to a dewar (4) through a supply line (3), wherein the supply line (3) And an inner pipe (3i) through which liquid helium (1L) passes, an inner pipe (3i) surrounding the outer circumference of the inner pipe (3i), and an outer pipe (3o) which is thermally insulated by vacuum, and the supply pipe line A heat shield tube (5) is inserted between the inner tube (3i) and the outer tube (3o) of the main part of (3), and the heat shield tube (5) is heated from the refrigerator (2). A cooling system (100) is provided that is cooled by conduction.
In the cooling system (100) according to the first aspect, not only is the vacuum insulation between the inner pipe (3i) and the outer pipe (3o) constituting the supply pipe (3), but also the refrigerator (2). Thermal radiation is blocked by insertion of a heat shield tube (5) cooled by heat conduction from. For this reason, the heat penetration | invasion in a supply pipe line (3) can be suppressed, and it becomes possible to lengthen a supply pipe line.

第２の観点では、本発明は、前記第１の観点による冷却システム（１００）において、前記熱シールド管（５）が前記デュワー（４）側からも熱伝導により冷却されることを特徴とする冷却システム（１００）を提供する。
上記第２の観点による冷却システム（１００）では、熱シールド管（５）が冷凍機（２）からの熱伝導で冷却されるだけでなく、デュワー（４）側からも熱伝導により冷却される。このため、さらに供給管路（３）での熱侵入を抑制できる。 In a second aspect, the present invention is characterized in that, in the cooling system (100) according to the first aspect, the heat shield tube (5) is also cooled by heat conduction from the Dewar (4) side. A cooling system (100) is provided.
In the cooling system (100) according to the second aspect, the heat shield tube (5) is not only cooled by heat conduction from the refrigerator (2) but also cooled from the dewar (4) side by heat conduction. . For this reason, the heat penetration | invasion in a supply pipe line (3) can be suppressed further.

第３の観点では、本発明は、前記第１または第２の観点による冷却システム（１００）において、前記供給管路（３）の主要部分の前記内管（３ｉ）と外管（３ｏ）とを可撓性のある金属管とし、前記熱シールド管（５）を熱伝導の良好な網線から構成したことを特徴とする冷却システム（１００）を提供する。
上記第３の観点による冷却システム（１００）では、供給管路（３）に熱シールド管（５）を挿入しても可撓性を持たせることが出来るので、供給管路（３）の取り付け／取り外し作業が容易になり、メンテナンス性が向上する。 In a third aspect, the present invention provides the cooling system (100) according to the first or second aspect, wherein the inner pipe (3i) and the outer pipe (3o) of the main part of the supply pipe (3) A cooling system (100) is provided in which a flexible metal tube is used and the heat shield tube (5) is formed of a mesh wire having good heat conduction.
In the cooling system (100) according to the third aspect, since the flexibility can be provided even if the heat shield pipe (5) is inserted into the supply pipe (3), the supply pipe (3) is attached. / Easy to remove and improve maintainability.

本発明の冷却システムによれば、供給管路（３）を構成する内管（３ｉ）と外管（３ｏ）の間が真空断熱され且つ冷凍機（２）からの熱伝導で冷却された熱シールド管（５）の挿入により熱放射が遮断されているため、供給管路（３）での熱侵入を抑制でき、供給管路を長くすることも可能になる。   According to the cooling system of the present invention, the heat between the inner pipe (3i) and the outer pipe (3o) constituting the supply pipe (3) is thermally insulated by heat conduction from the refrigerator (2). Since heat radiation is blocked by the insertion of the shield pipe (5), the heat intrusion in the supply pipe (3) can be suppressed, and the supply pipe can be lengthened.

以下、図に示す実施の形態により本発明をさらに詳細に説明する。なお、これにより本発明が限定されるものではない。   Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings. Note that the present invention is not limited thereby.

図１は、実施例１にかかる冷却システム１００を示す説明図である。
この冷却システム１００は、被冷却体Ｓを冷却するために液体ヘリウム１Ｌを貯留しているデュワー４に、供給管路３を通して、冷凍機２から液体ヘリウム１Ｌを供給するシステムである。
被冷却体Ｓは、例えば超伝導磁気センサーであり、磁気ノイズを避けるために磁気シールド壁ＭＷで囲まれた磁気シールド室に、デュワー４と共に設置されている。
冷凍機２は、ノイズを発生するため、磁気シールド室外に設置されている。
従って、冷凍機２とデュワー４とを連結する供給管路３は、磁気シールド壁ＭＷを貫通している。 FIG. 1 is an explanatory diagram of a cooling system 100 according to the first embodiment.
The cooling system 100 is a system that supplies liquid helium 1L from the refrigerator 2 through the supply pipe 3 to the dewar 4 that stores liquid helium 1L in order to cool the object S to be cooled.
The cooled object S is, for example, a superconducting magnetic sensor, and is installed together with the dewar 4 in a magnetic shield chamber surrounded by a magnetic shield wall MW in order to avoid magnetic noise.
The refrigerator 2 is installed outside the magnetic shield room in order to generate noise.
Accordingly, the supply pipeline 3 that connects the refrigerator 2 and the dewar 4 passes through the magnetic shield wall MW.

デュワー４は、被冷却体Ｓを収容し且つ液体ヘリウム１Ｌを貯留する内槽４ｉと、内槽４ｉの外周を取り巻き内槽４ｉと真空断熱された外槽４ｏとからなり、ガス１Ｇの排出と液体ヘリウム１Ｌの供給を行うためのネック部４ｎを有している。
ネック部４ｎの上端には、ガス排出管４ｇが取り付けられている。 The dewar 4 includes an inner tank 4i that stores the cooled object S and stores 1L of liquid helium, and an outer tank 4o that surrounds the outer periphery of the inner tank 4i and is vacuum-insulated, and that discharges gas 1G. It has a neck portion 4n for supplying 1 L of liquid helium.
A gas discharge pipe 4g is attached to the upper end of the neck portion 4n.

供給管路３は、液体ヘリウム１Ｌを通す内管３ｉと、内管３ｉの外周を取り巻き該内管３ｉと真空断熱された外管３ｏとを有する。
供給管路３の一端はデュワー４のネック部４ｎに挿入される挿入部３ｓになっている。その挿入部３ｓにおいて、内管３ｉの一端がデュワー４の内槽４ｉに連通している。また、外管３ｏの一端は閉じている。
他方、供給管路３の他端において、内管３ｉの他端はカップリング７を介して冷凍機内管２５と連結されている。また、外管３ｏの他端は真空バヨネット９を介してベローズ管６の一端に連結されている。ベローズ管６の他端は冷凍機２の真空容器２０に連結されている。
供給管路３の主要部分（配管部分に相当する部分）の内管３ｉおよび外管３ｏは、可撓性のある金属管になっている。例えば蛇腹構造のステンレス管になっている（図１中に波線で表現している）。
内管３ｉの管径は、冷凍機２からデュワー４に適量の液体ヘリウム１Ｌを供給できると共にその液体ヘリウム１Ｌの供給量に相当するガス１Ｇがデュワー４から冷凍機２に戻れるように定められている。 The supply pipe 3 includes an inner pipe 3i through which liquid helium 1L passes, and an outer pipe 3o that surrounds the outer circumference of the inner pipe 3i and is thermally insulated from the vacuum.
One end of the supply pipeline 3 is an insertion portion 3 s that is inserted into the neck portion 4 n of the dewar 4. In the insertion portion 3 s, one end of the inner tube 3 i communicates with the inner tank 4 i of the dewar 4. One end of the outer tube 3o is closed.
On the other hand, at the other end of the supply pipe 3, the other end of the inner pipe 3 i is connected to the refrigerator inner pipe 25 via the coupling 7. The other end of the outer tube 3 o is connected to one end of the bellows tube 6 through a vacuum bayonet 9. The other end of the bellows tube 6 is connected to the vacuum container 20 of the refrigerator 2.
The inner pipe 3i and the outer pipe 3o of the main part (the part corresponding to the pipe part) of the supply pipe line 3 are flexible metal pipes. For example, a stainless steel tube having a bellows structure is represented (indicated by a wavy line in FIG. 1).
The pipe diameter of the inner pipe 3i is determined so that an appropriate amount of liquid helium 1L can be supplied from the refrigerator 2 to the dewar 4 and gas 1G corresponding to the supply amount of the liquid helium 1L can be returned from the dewar 4 to the refrigerator 2. Yes.

供給管路３の内管３ｉと外管３ｏの間には、熱シールド管５が挿入されている。
熱シールド管５の端部５ａは、網線からなる連結体８を介して冷凍機２の熱シールド２４に連結されている。
他方、熱シールド管５の端部５ｂは、挿入部３ｓの下端近くまで延びて外管３ｏに連結されている。挿入部３ｓはガス１Ｇで冷却される。特に挿入部３ｓの下端近くでは、ガス１Ｇの温度が極めて低いため、よく冷却される。従って、熱シールド管５の端部５ｂからの熱伝導により熱シールド管５も冷却される。
図２に示すように、熱シールド管５の主要部分（配管部分に相当する部分）は、熱伝導の良好な例えば銅の網線からなるメッシュシールド５１と、そのメッシュシールド５１を管形状に保持するためのスプリング５２とから構成されており（図１中に×パターン線で表現している）、可撓性を有している。 A heat shield tube 5 is inserted between the inner tube 3 i and the outer tube 3 o of the supply pipeline 3.
The end portion 5a of the heat shield tube 5 is connected to the heat shield 24 of the refrigerator 2 through a connecting body 8 made of a mesh wire.
On the other hand, the end portion 5b of the heat shield tube 5 extends to near the lower end of the insertion portion 3s and is connected to the outer tube 3o. The insertion portion 3s is cooled by the gas 1G. In particular, near the lower end of the insertion portion 3s, the temperature of the gas 1G is extremely low, so that it is well cooled. Accordingly, the heat shield tube 5 is also cooled by heat conduction from the end portion 5b of the heat shield tube 5.
As shown in FIG. 2, the main portion of the heat shield tube 5 (portion corresponding to the piping portion) has a mesh shield 51 made of, for example, copper mesh wire with good heat conduction, and the mesh shield 51 is held in a tube shape. And a spring 52 (represented by x pattern lines in FIG. 1) and has flexibility.

外管３ｏと熱シールド管５の間には、熱放射を遮断するために、例えばスーパーインシュレータのような断熱材１１が充填されている。   Between the outer tube 3o and the heat shield tube 5, a heat insulating material 11 such as a super insulator is filled in order to block heat radiation.

外管３ｏ，熱シールド管５および内管３ｉは、支持体１０により相互間隔を保持されている。   The outer tube 3 o, the heat shield tube 5, and the inner tube 3 i are held at a mutual interval by the support 10.

冷凍機２は、真空容器２０と、真空容器２０に収容された第１ステージ２１，第２ステージ２２および凝縮器２３と、第２ステージ２２および凝縮器２３を囲む熱シールド２４と、凝縮器２３から突出した冷凍機内管２５とを具備している。
熱シールド２４は、第１ステージ２１により冷却されている。従って、熱シールド２４に連結体８で連結された熱シールド管５も熱伝導により冷却される。 The refrigerator 2 includes a vacuum vessel 20, a first stage 21, a second stage 22 and a condenser 23 housed in the vacuum vessel 20, a heat shield 24 surrounding the second stage 22 and the condenser 23, and a condenser 23. And a refrigerator inner pipe 25 protruding from the inside.
The heat shield 24 is cooled by the first stage 21. Accordingly, the heat shield tube 5 connected to the heat shield 24 by the connecting body 8 is also cooled by heat conduction.

冷凍機２からデュワー４へ液体へリウム１Ｌが自然落下で流れるようにするため、冷凍機２は架台２６に載せられてデュワー４より高い位置に置かれ、供給管路３は適当な勾配を付けられている。   The refrigerator 2 is placed on the gantry 26 and placed at a position higher than the dewar 4 so that the liquid 1L flows from the refrigerator 2 to the dewar 4 by a natural fall, and the supply pipe line 3 has an appropriate gradient. It has been.

冷凍機２に供給管路３を接続する作業は次の手順で行う。
まず、ベローズ管６を押しつぶした状態にして、冷凍機内管２５に供給管路３の内管３ｉをカップリング１０で接続すると共に、熱シールド２４に熱シールド管５を連結体８で接続する。
次に、ベローズ管６を引き出した状態にして、ベローズ管６に供給管路３の外管３ｏを真空バヨネット９で接続する。 The operation of connecting the supply pipeline 3 to the refrigerator 2 is performed according to the following procedure.
First, the bellows pipe 6 is crushed, the inner pipe 3 i of the supply pipe line 3 is connected to the refrigerator inner pipe 25 by the coupling 10, and the heat shield pipe 5 is connected to the heat shield 24 by the coupling body 8.
Next, the bellows pipe 6 is pulled out, and the outer pipe 3 o of the supply pipe line 3 is connected to the bellows pipe 6 by a vacuum bayonet 9.

実施例１の冷却システム１００によれば、供給管路３の内管３ｉと外管３ｏの間に熱シールド管５が挿入され、熱シールド管５が冷却されているので、供給管路３での熱侵入を抑制でき、供給管路３を長くすることが可能になる。
また、供給管路３の主要部が可撓性を有するので、供給管路３の取り付け／取り外し作業が容易になり、メンテナンス性が向上する。 According to the cooling system 100 of the first embodiment, the heat shield pipe 5 is inserted between the inner pipe 3i and the outer pipe 3o of the supply pipe 3 and the heat shield pipe 5 is cooled. Heat intrusion can be suppressed, and the supply line 3 can be lengthened.
Moreover, since the main part of the supply pipeline 3 has flexibility, the attachment / detachment work of the supply pipeline 3 is facilitated, and the maintainability is improved.

図３に示すように、ヒートパイプ５３を熱シールド管５の長手方向に熱的に接触させて設けてもよい。ヒートパイプ５３に内蔵する流体は、動作温度領域に適合するものを選択する。例えば窒素、ネオン、水素が挙げられる。
実施例２によれば、熱シールド管５の長手方向の温度勾配を小さくすることが出来る。 As shown in FIG. 3, the heat pipe 53 may be provided in thermal contact with the longitudinal direction of the heat shield tube 5. The fluid built in the heat pipe 53 is selected to be compatible with the operating temperature range. For example, nitrogen, neon, and hydrogen can be mentioned.
According to the second embodiment, the temperature gradient in the longitudinal direction of the heat shield tube 5 can be reduced.

図４に示すように、内管３ｉを液管３Ｌとガス管３Ｇの二重管としてもよい。
実施例３によれば、温度が異なり且つ流れが逆方向の液体ヘリウム１Ｌとガス１Ｇとが分離され、接触しないので、温度損失を低減できる。 As shown in FIG. 4, the inner tube 3i may be a double tube of a liquid tube 3L and a gas tube 3G.
According to the third embodiment, the liquid helium 1L and the gas 1G, which are different in temperature and flow in opposite directions, are separated and do not come into contact with each other, so that temperature loss can be reduced.

本発明の冷却システムは、液体ヘリウムを冷媒とする例えば生体磁気測定装置に利用できる。   The cooling system of the present invention can be used in, for example, a biomagnetism measuring apparatus using liquid helium as a refrigerant.

実施例１にかかる冷却システムを示す断面説明図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory cross-sectional view illustrating a cooling system according to a first embodiment. 実施例１にかかる熱シールド管の主要部の構造を示す斜視図である。It is a perspective view which shows the structure of the principal part of the heat shield pipe | tube concerning Example 1. FIG. 実施例２にかかる熱シールド管とヒートパイプを示す斜視図である。It is a perspective view which shows the heat shield pipe | tube and heat pipe concerning Example 2. FIG. 実施例３にかかる内管と凝縮器を示す斜視図である。It is a perspective view which shows the inner tube | pipe and condenser concerning Example 3. FIG.

符号の説明Explanation of symbols

１Ｌ 液体ヘリウム
１Ｇ ガス
２ 冷凍機
３ 供給管路
３ｉ 内管
３ｏ 外管
３Ｇ ガス管
３Ｌ 液管
４ デュワー
５ 熱シールド管
８ 連結体
２４ 熱シールド
５１ メッシュシールド
５２ スプリング
５３ ヒートパイプ
１００ 冷却システム 1L liquid helium 1G gas 2 refrigerator 3 supply pipe 3i inner pipe 3o outer pipe 3G gas pipe 3L liquid pipe 4 dewar 5 heat shield pipe 8 connector 24 heat shield 51 mesh shield 52 spring 53 heat pipe 100 cooling system

Claims (3)

液体ヘリウム（１Ｌ）を磁気シールド室外の冷凍機（２）から磁気シールド壁（ＭＷ）を貫通している供給管路（３）を通して磁気シールド室内のデュワー（４）に供給する冷却システムであって、前記供給管路（３）は、液体ヘリウム（１Ｌ）を通す内管（３ｉ）と、前記内管（３ｉ）の外周を取り巻き該内管（３ｉ）と真空断熱された外管（３ｏ）とを有し、前記供給管路（３）の一端側は前記デュワー（４）のネック部（４ｎ）に挿入される挿入部（３ｓ）になっており、前記挿入部（３ｓ）における前記外管（３ｏ）の周囲を通ってガス（１Ｇ）が前記ネック部（４ｎ）から排出され、前記供給管路（３）の他端側は冷凍機（２）と連結されており、前記供給管路（３）の主要部分の前記内管（３ｉ）と外管（３ｏ）の間には熱シールド管（５）が挿入され、前記熱シールド管（５）の一端側は前記挿入部（３ｓ）の下端近くで前記外管（３ｏ）に連結されると共に他端側は冷凍機（２）に連結され、前記シールド管（５）が前記デュワー（４）側からの熱伝導により冷却されると共に前記冷凍機（２）からの熱伝導により冷却されることを特徴とする冷却システム（１００）。 A cooling system for supplying liquid helium (1 L) from a refrigerator (2) outside a magnetic shield room to a dewar (4) in the magnetic shield room through a supply pipe (3) passing through the magnetic shield wall (MW). The supply pipe (3) includes an inner pipe (3i) through which liquid helium (1L) passes, and an outer pipe (3o) surrounding the outer circumference of the inner pipe (3i) and thermally insulated from the inner pipe (3i). One end side of the supply pipe (3) is an insertion part (3s) to be inserted into the neck part (4n) of the dewar (4), and the outer side of the insertion part (3s) Gas (1G) is discharged from the neck (4n) through the periphery of the pipe (3o), the other end of the supply pipe (3) is connected to the refrigerator (2), and the supply pipe Between the inner pipe (3i) and the outer pipe (3o) of the main part of the path (3), there is a heat seal. Inserted de tube (5) is, the heat shield tube (5) one end side of the insertion portion and the outer tube near the lower end of the (3s) and the other end side while being connected to the (3o) is refrigerator (2) The cooling system (100) , wherein the shield pipe (5) is cooled by heat conduction from the dewar (4) side and is cooled by heat conduction from the refrigerator (2). . 請求項１に記載の冷却システム（１００）において、断熱材（１１）が、前記外管（３ｏ）と前記熱シールド管（５）の間に充填されていることを特徴とする冷却システム（１００）。 The cooling system (100) according to claim 1, wherein a heat insulating material (11) is filled between the outer tube (3o) and the heat shield tube (5). ). 請求項１または請求項２に記載の冷却システム（１００）において、ヒートパイプ（５３）が、前記熱シールド管（５）の長手方向に熱的に接触して設置されていることを特徴とする冷却システム（１００）。 The cooling system (100) according to claim 1 or 2, characterized in that a heat pipe (53) is installed in thermal contact with the longitudinal direction of the heat shield tube (5). Cooling system (100).
JP2006102659A 2006-04-04 2006-04-04 Cooling system Expired - Fee Related JP4736047B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006102659A JP4736047B2 (en) 2006-04-04 2006-04-04 Cooling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006102659A JP4736047B2 (en) 2006-04-04 2006-04-04 Cooling system

Publications (2)

Publication Number Publication Date
JP2007278550A JP2007278550A (en) 2007-10-25
JP4736047B2 true JP4736047B2 (en) 2011-07-27

Family

ID=38680169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006102659A Expired - Fee Related JP4736047B2 (en) 2006-04-04 2006-04-04 Cooling system

Country Status (1)

Country Link
JP (1) JP4736047B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5553376B2 (en) * 2009-09-07 2014-07-16 独立行政法人産業技術総合研究所 Cryostat
JP5728172B2 (en) * 2010-06-16 2015-06-03 株式会社神戸製鋼所 Recondensing device and NMR analyzer equipped with the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01127876A (en) * 1987-11-13 1989-05-19 Japan Atom Energy Res Inst Cryogenic refrigerant transfer piping
JPH10246547A (en) * 1997-03-07 1998-09-14 Iwatani Internatl Corp Re-liquefying device for liquefied gas for use in cooling physical and chemical equipment
JP2000304365A (en) * 1999-04-15 2000-11-02 Taiyo Toyo Sanso Co Ltd Apparatus for recovering, recondensing and supplying liquid helium
JP2004116914A (en) * 2002-09-27 2004-04-15 Yokogawa Electric Corp Cooling pipe and cryogenic cryostat using it
JP2006046896A (en) * 2004-07-30 2006-02-16 Bruker Biospin Ag Lossless cryogen cooling device for cryostat configuration

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01127876A (en) * 1987-11-13 1989-05-19 Japan Atom Energy Res Inst Cryogenic refrigerant transfer piping
JPH10246547A (en) * 1997-03-07 1998-09-14 Iwatani Internatl Corp Re-liquefying device for liquefied gas for use in cooling physical and chemical equipment
JP2000304365A (en) * 1999-04-15 2000-11-02 Taiyo Toyo Sanso Co Ltd Apparatus for recovering, recondensing and supplying liquid helium
JP2004116914A (en) * 2002-09-27 2004-04-15 Yokogawa Electric Corp Cooling pipe and cryogenic cryostat using it
JP2006046896A (en) * 2004-07-30 2006-02-16 Bruker Biospin Ag Lossless cryogen cooling device for cryostat configuration

Also Published As

Publication number Publication date
JP2007278550A (en) 2007-10-25

Similar Documents

Publication Publication Date Title
US5782095A (en) Cryogen recondensing superconducting magnet
US7395671B2 (en) Cryogenic system
JP2008111666A (en) Cryogenic cooler
CN1847716B (en) Recondensing service neck for cryostat
JP2006046896A (en) Lossless cryogen cooling device for cryostat configuration
JP4736047B2 (en) Cooling system
CN1961178B (en) Refrigerator interface for cryostat
JP6588264B2 (en) Cryogenic refrigerant supply system
JP2015117778A (en) Vacuum heat insulation pipe and vacuum heat insulation transfer tube
GB2429051A (en) Superconducting magnet system comprising a radiation shield disposed between a cryogenic fluid tank and a refrigerator
JP2014052133A (en) Bayonet coupler for cryogenic fluid
JP6440922B1 (en) Superconducting magnet
JP2005344991A (en) Cryogenic cryostat
US11199600B2 (en) Superconducting magnet with cold head thermal path cooled by heat exchanger
US20070107446A1 (en) Superconducting magnet system with refrigerator for re-liquifying cryogenic fluid in a tubular conduit
WO2003036190A1 (en) A pulse tube refrigerator with an insulating sleeve
JP2007252425A (en) Superconducting magnet, and magnetic resonance imaging apparatus
JP2014037932A (en) Flexible heat insulation transfer pipe and flexible low temperature cooling device
JP2844433B2 (en) Reliquefaction equipment for liquefied gas for cooling of physics and chemistry equipment
JP7208914B2 (en) Thermal bath heat exchanger for superconducting magnets
JP2008267635A (en) Cryogenic cooling equipment and method
JPWO2019073573A1 (en) Superconducting electromagnet device
JP2010046344A (en) Living body magnetic field measuring instrument
JPH0317056B2 (en)
JP5981252B2 (en) Cryogenic holding parts storage device and refrigeration cable used in this device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090206

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100909

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101019

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101105

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110412

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110414

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4736047

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140513

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: R3D02

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees