JPS61142710A - Superconducting magnet - Google Patents
Superconducting magnetInfo
- Publication number
- JPS61142710A JPS61142710A JP59264402A JP26440284A JPS61142710A JP S61142710 A JPS61142710 A JP S61142710A JP 59264402 A JP59264402 A JP 59264402A JP 26440284 A JP26440284 A JP 26440284A JP S61142710 A JPS61142710 A JP S61142710A
- Authority
- JP
- Japan
- Prior art keywords
- current
- switch
- heater
- coil
- superconducting
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/001—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for superconducting apparatus, e.g. coils, lines, machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は超電導マグネットｇｉ装置（二関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a superconducting magnet GI device.
超電導コイルは液体ヘリウム中（；置かれ磁気抵抗が零
となるため永久電流モードで励磁が可能となる。このた
めコイル（＝電流を供給する電流リードは、液体ヘリウ
ムの蒸発量を多くするだけなので取外され、コイルは電
源と切離しされることがある。この永久電流モードで運
転される超電導コイルは、磁気浮上式鉄道、 ＮＭＲ−
ＣＴなどｉ；広く利用されている。When the superconducting coil is placed in liquid helium (; the magnetic resistance becomes zero, it can be excited in persistent current mode. Therefore, the coil (= the current lead that supplies the current only increases the amount of evaporation of the liquid helium). The coil may be removed and disconnected from the power supply.Superconducting coils operated in this persistent current mode are used in magnetic levitation railways, NMR-
CT etc.; Widely used.
超電導コイルを氷久尾流モードで運転する手順をＷＩｚ
図の回路図をもと４’−ＦＩ５Ｌ＃３Ａする。超電導コ
イル１（：電源２から電流を供給するためζ：脱看式の
電流リード３が取付けられ超電導コイル１ζ二電流を流
し始める。この時、コイル保禮抵抗４のスイッチ５は開
とされ、ＭＭ４＝ｒイルｌがなんらかの原因（二よυ超
電導状態から常電導状態に転移した時のエネルギーは保
護抵抗６（二より消費され７ｉ！！蝋導コイル１を保躾
する。また、永久−流スイッチ７は開とされる。この永
久−流スイッチ７の開閉は、超電導線８（＝取付けられ
たヒータ−９に尾流を供給するヒーター電源１０のヒー
ター回路（二設けられたヒータースイッチ１１の開閉に
より超颯導腺８を超電導状態から常電導状態（＝、また
は常電導状態から超電導状態（二転移させることで行な
われる。所定の電流まで上げた俊、コイル保護抵抗４は
スイッチ５を閉としコイルと並列（二接続し、永久磁流
スイッチ７はヒータースイッチ１１を開とすること）二
よυ超磁線８を超電導状態とし閉とする。WIz the procedure for operating a superconducting coil in Hikūo style mode
4'-FI5L#3A based on the circuit diagram shown in the figure. In order to supply current from the superconducting coil 1 (: power source 2), a removable current lead 3 is attached and a current begins to flow through the superconducting coil 1. At this time, the switch 5 of the coil protection resistor 4 is opened. MM4 = r is caused by some reason (2, υ, energy transferred from the superconducting state to the normal conducting state is consumed by the protective resistance 6 (2) and maintains the wax conductive coil 1. Also, the permanent current The switch 7 is opened. The opening/closing of the permanent flow switch 7 is controlled by the heater circuit (2) of the heater power supply 10 which supplies the tail flow to the superconducting wire 8 (= the attached heater 9). This is done by switching the superconducting gland 8 from a superconducting state to a normal conducting state (= or from a normal conducting state to a superconducting state) by opening and closing the switch. and parallel to the coil (two connections are made, and the permanent magnetic current switch 7 and the heater switch 11 are opened).
これ）：より永久磁流モードとな９超電導コイル１と超
電導線８の閉回路を磁流が流れる。次（二電源２は一流
を零とし電流リード３を取外す。この状態で超電導コイ
ル１が常電導状態着二転移した時のエネルギーはコイル
保護抵抗４で消費されること（二なる。(This): A magnetic current flows in a closed circuit of the superconducting coil 1 and the superconducting wire 8 in a more permanent magnetic current mode. Next (the second power source 2 makes the current flow zero and removes the current lead 3. In this state, when the superconducting coil 1 transitions to the normal conduction state, the energy is consumed by the coil protection resistor 4.
永久磁流モードから電流を下げる場合は、脱着式電流リ
ード３を取付は超電導コイル１の励磁電流値まで礁ＳＸ
流を上げる。この励磁電流値は磁束密度（＝比例した値
であるため、これを測定し求めることができる。次（二
氷久屯流スイッチ７はヒータースイッチ１１を閉とする
こと（二より開とし、コイル保護抵抗スイッチ５は開と
する。この状態で永久磁流モードではなくな９磁源峨流
を下げていくことでコイル励磁電流も下がっていく。When lowering the current from the permanent magnetic current mode, install the removable current lead 3 until the excitation current value of the superconducting coil 1 is reached.
Raise the flow. This excitation current value is a value proportional to the magnetic flux density, so it can be determined by measuring it. The protective resistance switch 5 is opened.In this state, the permanent magnetic current mode is no longer in effect, and the coil excitation current is also reduced by lowering the 9-magnetic source current.
この水久礒流モードから電流を下げていく場合、電源電
流か励磁電流と同値でない状態で永久磁流スイッチ７を
開とすると差分の一流はコイル保護抵抗４と保ｉｌｉ抵
抗６（二分流し発熱する。コイル保護抵抗４は超電導コ
イル１と同じく液体ヘリウム容器内（二収納されている
ため液体ヘリウムの蒸発量を増大させる結果となる。When lowering the current from this water current mode, if the permanent magnetic current switch 7 is opened in a state where the power supply current or excitation current is not the same value, the differential current is the coil protective resistor 4 and the protective resistor 6 (bifurcated flow heat generation). Like the superconducting coil 1, the coil protection resistor 4 is housed in a liquid helium container, which results in an increase in the amount of evaporation of liquid helium.
本発明は励磁電流値と電源電流が同値のときにのみ永久
電流スイッチを開とすることができる超電導マグネット
装置を提供することを目的とする。An object of the present invention is to provide a superconducting magnet device in which a persistent current switch can be opened only when the excitation current value and the power supply current are the same value.
上記目的を達成するため（二本発明の超電導マグネット
装置（＝おいては、超電導コイルの生成する磁束から超
電導コイルに流れている砥流値を求める磁束計および励
磁電流計と、超電導コイルν（二電源から供給される電
流を求める慰源庫流計と、これら両者の４流値が等しい
ときにＯＮ、ＯＦＦされるヒーターを有する永久電流ス
イッチとを備えた構成とし、両電流値が等しい状態で超
電導コイル回路を電源回路（＝接続あるいは切離するこ
とかできるよう（＝して、コイル保護抵抗Ｃ：流れる差
電流が生じないようＣニする。In order to achieve the above object (2), the superconducting magnet device (=) of the present invention includes a magnetometer and an excitation ammeter that measure the value of the abrasive current flowing in the superconducting coil from the magnetic flux generated by the superconducting coil, and a superconducting coil ν ( The configuration includes a source current meter that measures the current supplied from two power sources, and a persistent current switch that has a heater that turns on and off when the four current values of both are equal, and the current value of both is equal. The superconducting coil circuit is connected to the power supply circuit (= so that it can be connected or disconnected (=), and the coil protection resistor C is set so that no differential current flows.
以下、本発明の実施例をＷＩ１図をもとじ説明する。１
２は超電導コイル１の磁束密度を測定する磁束計、１３
は磁束密度より比例計算ζ二より励磁峨流値を求める励
磁電流計、１４は岨源磁流計、１５は励磁電流計１３の
値と゛電源磁流計１４の１Ｋが等しいとき（；動作する
自動ヒータースイッチである。Hereinafter, embodiments of the present invention will be described based on Figure WI1. 1
2 is a magnetometer that measures the magnetic flux density of the superconducting coil 1, 13
is an excitation ammeter that calculates the excitation current value from the proportional calculation ζ2 from the magnetic flux density, 14 is an excitation magnetometer, and 15 is an excitation ammeter 13 that is equal to 1K of the power source magnetometer 14. Automatic heater switch.
次（二上記のよう（＝構成した超電導マグネット装置の
動作を説明する。超電導コイル１の一流を永久磁流モー
ドから下げる場合は、−流リード３を取付け、電源２を
作動させ電源電流を上げる。この時励磁柩流値は磁束計
１２で測定した値より計算され励磁電流計１３（＝表わ
される。電源電流は電源電流計１４で表わされ、この値
が励磁電流計１３のそれと等しくなれば自動ヒータース
イッチ１５が作動し、ヒーターが入る。これ（二より超
電導線８は常電導状態となシ氷久電流スイッチ７は開と
なる。Next (2) We will explain the operation of the superconducting magnet device configured as described above. When lowering the first flow of the superconducting coil 1 from the permanent magnetic current mode, attach the -current lead 3 and activate the power supply 2 to increase the power supply current. At this time, the excitation current value is calculated from the value measured by the magnetometer 12 and is expressed by the excitation ammeter 13 (=).The power supply current is represented by the power supply ammeter 14, and this value must be equal to that of the excitation ammeter 13. If so, the automatic heater switch 15 is activated and the heater is turned on.When this happens (the superconducting wire 8 is in a normal conductive state), the current switch 7 is opened.
励磁電流と電源電流（二差が無いためコイル保護抵抗４
（二電流は流れず、発熱ζ二よる液体ヘリウムの蒸発量
増大ということはない。これは永久磁流モードから電流
を上げる場合（二ついても西°える。Excitation current and power supply current (because there is no difference between the two, coil protection resistance 4
(No current flows, and there is no increase in the amount of evaporation of liquid helium due to heat generation ζ2.) This occurs when increasing the current from the permanent magnetic current mode (even if there are two currents, the amount of evaporation of liquid helium does not increase).
以上のよう（二本発明によれば、超電導；イルの励磁電
流を永久磁流モードから変化させる場合、励磁電流を磁
束針の値より求め、４源の砥流値がこの値と同じくなっ
た時、自動ヒータースイッチ（二上って永久磁流スイッ
チにヒーターが入るので、上記二つの一流値（：差のな
い状態ではじめて永久電流スイッチが開となる。このた
め液体ヘリウム容器内（＝あるコイル保護抵抗（二は電
流が流れず、発熱シニよる液体ヘリウム蒸発がない。As described above (according to the present invention), when changing the excitation current of the superconducting coil from the permanent magnetic current mode, the excitation current is determined from the value of the magnetic flux needle, and the abrasive current values of the four sources become the same as this value. When the automatic heater switch (2) goes up and the heater is turned on to the permanent magnetic current switch, the permanent current switch opens only when there is no difference between the two above-mentioned values. Coil protection resistor (2) No current flows and there is no evaporation of liquid helium due to heat generation.
第１図は本発明の実施例の超電導マグネット装置の回路
図、第２図は従来のものの回路図である。
１・・・超電導コイＩＬ／２・・・′ｋＬ源３・・・一
流リード ４・・・コイル保護抵抗５・・・コイル
保護抵抗スイッチ ６・・・保護抵抗７・・・氷久砥流
スイッチ ８・・・超電導線９・・・ヒーター
ｌＯ・・・ヒーター電源１１・・・ヒータースイッチ
１２・・・磁束計１３・・・励磁砿流計 １４・
・・電源電流計１５・・・自動ヒータースイッチ。
代理人 弁理士 則 近 憲 右（ほか１名）第１図
第２図FIG. 1 is a circuit diagram of a superconducting magnet device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional one. 1...Superconducting coil IL/2...'kL source 3...First class lead 4...Coil protection resistor 5...Coil protection resistance switch 6...Protection resistor 7...Hiku Toryu Switch 8...Superconducting wire 9...Heater
lO... Heater power supply 11... Heater switch 12... Magnetic flux meter 13... Excitation current meter 14.
...Power supply ammeter 15...Automatic heater switch. Agent: Patent Attorney Noriyoshi Chika Right (and 1 other person) Figure 1 Figure 2
Claims (1)
電源と、前記超電導コイルに並列接続された永久電流ス
イッチと、前記超電導コイルの生成する磁束を測定し前
記超電導コイルに流れている電流を求める励磁電流計と
、前記電源の供給する電流を測定する電源電流計と、こ
の電源電流計の測定値と前記励磁電流計の測定値とを比
較し両者が等しいときに前記永久電流スイッチのヒータ
ー回路を開閉するヒータースイッチとを備えたことを特
徴とする超電導マグネット装置。a superconducting coil, a power source that supplies current to the superconducting coil, a persistent current switch connected in parallel to the superconducting coil, and an excitation current that measures the magnetic flux generated by the superconducting coil to determine the current flowing through the superconducting coil. a power supply ammeter that measures the current supplied by the power supply, and compares the measurement value of the power supply ammeter with the measurement value of the excitation ammeter, and opens and closes the heater circuit of the persistent current switch when the two are equal. A superconducting magnet device characterized in that it is equipped with a heater switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59264402A JPS61142710A (en) | 1984-12-17 | 1984-12-17 | Superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59264402A JPS61142710A (en) | 1984-12-17 | 1984-12-17 | Superconducting magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61142710A true JPS61142710A (en) | 1986-06-30 |
Family
ID=17402660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59264402A Pending JPS61142710A (en) | 1984-12-17 | 1984-12-17 | Superconducting magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61142710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011058398A (en) * | 2009-09-08 | 2011-03-24 | Toshiba Corp | Super-conductive magnet device for space and propulsion device for space |
-
1984
- 1984-12-17 JP JP59264402A patent/JPS61142710A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011058398A (en) * | 2009-09-08 | 2011-03-24 | Toshiba Corp | Super-conductive magnet device for space and propulsion device for space |
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