JP4694133B2 - Interlock system of superconducting coil excitation demagnetization controller - Google Patents

Interlock system of superconducting coil excitation demagnetization controller Download PDF

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JP4694133B2
JP4694133B2 JP2004062463A JP2004062463A JP4694133B2 JP 4694133 B2 JP4694133 B2 JP 4694133B2 JP 2004062463 A JP2004062463 A JP 2004062463A JP 2004062463 A JP2004062463 A JP 2004062463A JP 4694133 B2 JP4694133 B2 JP 4694133B2
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superconducting coil
temperature
power lead
demagnetization
excitation
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JP2005252085A (en
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勝 岩松
哲郎 浅原
和也 池田
正文 小方
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Railway Technical Research Institute
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Description

本発明は、超電導コイル励消磁制御装置のインターロックシステムに関するものである。   The present invention relates to an interlock system of a superconducting coil excitation demagnetization control device.

従来、一般に超電導コイルへの熱侵入量を極力抑えるために電流リードは高電流密度設計とし、常温端子からの伝導熱を減らし、発生するジュール熱は蒸発するヘリウムガスで除去する方式がとられている。
そのため、このヘリウムガスによる冷却状態が悪くなると電流リードは過熱し、その検出が遅れると焼損に至ってしまう。 Conventionally, in order to suppress the amount of heat penetration into the superconducting coil as much as possible, the current lead has been designed to have a high current density, the conduction heat from the room temperature terminal is reduced, and the generated Joule heat is removed with the evaporating helium gas. Yes.
For this reason, when the cooling state by the helium gas is deteriorated, the current lead is overheated, and if the detection is delayed, the current lead is burned.

図４は従来の電流リードの過熱監視装置（その１）の模式図である。
この図において、１はクライオスタット、２は超電導コイル、３はヘリウム液面、４は電流リード、５は常温端子、６は低温端子、７は温度素子、８はヘリウムガス、９はリード線、１０は温度監視盤、１１は放電指令信号を示している。
この図４に示すように、電流リード４自身に温度素子７を取り付け、温度監視盤１０で監視し、警報レベルを越えた場合にはコイル放電指令信号１１を発して、電流リード４の焼損を未然に防ぐようにしていた。 FIG. 4 is a schematic diagram of a conventional overheat monitoring device (No. 1) for current leads.
In this figure, 1 is a cryostat, 2 is a superconducting coil, 3 is a helium liquid level, 4 is a current lead, 5 is a normal temperature terminal, 6 is a low temperature terminal, 7 is a temperature element, 8 is helium gas, 9 is a lead wire, 10 Indicates a temperature monitoring board, and 11 indicates a discharge command signal.
As shown in FIG. 4, a temperature element 7 is attached to the current lead 4 itself, monitored by the temperature monitoring panel 10, and when the alarm level is exceeded, a coil discharge command signal 11 is issued to burn out the current lead 4. I tried to prevent it.

しかし、かかる方法では検出時間の遅れがあり、これを防止するために、図５に示すように、電流リードの常電導部分の両端の電位差を監視するようにしたものが提案されている（特許文献１参照）。
図５は従来の電流リードの過熱監視装置（その２）の模式図である。
この図において、図４の温度素子７に代えて、常温端子５に配置される電圧タップ１２と低温端子６に配置される電圧タップ１３とを設けて、各々の電圧タップ１２と１３からの出力をリード線１４を介して電圧監視盤１５で監視して、電圧タップ１２と１３との間の電位差が上昇して警報レベルを越えた場合、異常と判断して電圧監視盤１５からコイル放電指令信号１６を発することにより、電流リード４の焼損を防止するようにしている。
特開昭６３−１３３５０７号公報 However, in this method, there is a delay in detection time, and in order to prevent this, as shown in FIG. 5, a method is proposed in which the potential difference between both ends of the normal conducting portion of the current lead is monitored (patent). Reference 1).
FIG. 5 is a schematic diagram of a conventional current lead overheat monitoring device (part 2).
In this figure, instead of the temperature element 7 of FIG. 4, a voltage tap 12 arranged at the normal temperature terminal 5 and a voltage tap 13 arranged at the low temperature terminal 6 are provided, and outputs from the voltage taps 12 and 13 are provided. Is monitored by the voltage monitoring panel 15 via the lead wire 14, and if the potential difference between the voltage taps 12 and 13 rises and exceeds the alarm level, it is determined that there is an abnormality and the coil monitoring command is issued from the voltage monitoring panel 15 By emitting the signal 16, the current lead 4 is prevented from being burned out.
JP-A-63-133507

しかしながら、超電導コイルの励磁と消磁の両方の制御を確実に実施できるインターロックシステムはこれまでに提案されておらず、かかるシステムが望まれている。
本発明は、上記状況に鑑みて、より直接的に冷却経路が確保されているか否かを確認し、監視要素として加味することにより、超電導コイルの励磁と消磁の両方の制御を確実に実施できる超電導コイル励消磁制御装置のインターロックシステムを提供することを目的とする。 However, an interlock system that can reliably perform control of both excitation and demagnetization of the superconducting coil has not been proposed so far, and such a system is desired.
In view of the above situation, the present invention can surely control both excitation and demagnetization of the superconducting coil by confirming whether or not the cooling path is more directly secured and adding it as a monitoring element. An object of the present invention is to provide an interlock system for a superconducting coil excitation / demagnetization control device.

本発明は、上記目的を達成するために、
〔１〕超電導コイル励消磁制御装置のインターロックシステムにおいて、パワーリード大気開放弁の検知装置と、パワーリードの常温端子に配置される第１の温度素子と、前記パワーリードの低温領域であって励磁もしくは消磁時に温度の極大値を取り得る個所に配置される第２の温度素子と、超電導コイルの励磁又は消磁を行う制御装置とを備え、前記第１の温度素子と第２の温度素子からの出力信号のうち少なくとも一方が不適切であるか、または前記パワーリード大気開放弁が開放していない場合に、前記制御装置により、前記超電導コイルの緊急消磁を行う信号を出力することを特徴とする。 In order to achieve the above object, the present invention provides
[ 1 ] In the interlock system of the superconducting coil excitation / demagnetization control device, a power lead atmospheric release valve detection device, a first temperature element disposed at a normal temperature terminal of the power lead, and a low temperature region of the power lead. A second temperature element disposed at a position where the maximum value of the temperature can be obtained at the time of excitation or demagnetization, and a control device that performs excitation or demagnetization of the superconducting coil, and includes the first temperature element and the second temperature element. When at least one of the output signals is inappropriate or when the power lead atmospheric release valve is not open, the control device outputs a signal for emergency demagnetization of the superconducting coil. To do.

本発明によれば、超電導コイルの励磁と消磁の両方の制御を行う超電導コイル励消磁制御装置のインターロックを確実に実施することができる。   According to the present invention, the interlock of the superconducting coil excitation / demagnetization control device that controls both excitation and demagnetization of the superconducting coil can be reliably implemented.

超電導コイル励消磁制御装置のインターロックシステムにおいて、パワーリード大気開放弁の検知装置と、パワーリードの常温端子に配置される第１の温度素子と、前記パワーリードの低温領域であって励磁もしくは消磁時に温度の極大値を取り得る個所に配置される第２の温度素子と、超電導コイルの励磁又は消磁を行う制御装置とを備え、前記第１の温度素子と第２の温度素子からの出力信号のうち少なくとも一方が不適切であるか、または前記パワーリード大気開放弁が開放していない場合に、前記制御装置により、前記超電導コイルの緊急消磁を行う信号を出力する。 In the interlock system of the superconducting coil excitation demagnetization control device, the power lead atmospheric release valve detection device, the first temperature element arranged at the room temperature terminal of the power lead, and the excitation or demagnetization in the low temperature region of the power lead. An output signal from the first temperature element and the second temperature element, comprising: a second temperature element disposed at a place where the maximum value of the temperature can sometimes be obtained; and a control device for exciting or demagnetizing the superconducting coil. When at least one of them is inappropriate or the power lead atmosphere release valve is not open , the control device outputs a signal for emergency demagnetization of the superconducting coil.

以下、本発明の実施の形態について詳細に説明する。
図１は本発明の実施例を示す超電導コイル励消磁制御装置のインターロックシステムの模式図である。
この図において、２１はクライオスタット、２２は超電導コイル、２３はヘリウム液面、２４はパワーリード、２５は常温端子、２６は低温端子、２７はパワーリード大気開放弁、２８はパワーリード２４の所定個所に配置される第１の温度素子、２９はパワーリード２４の所定個所とは他の個所に配置される第２の温度素子、３０はパワーリード大気開放弁２７の検知装置、３１は冷却ヘリウムガス、３２は冷却ヘリウム排出ガス、３３は制御装置である。 Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a schematic diagram of an interlock system of a superconducting coil excitation / demagnetization control apparatus showing an embodiment of the present invention.
In this figure, 21 is a cryostat, 22 is a superconducting coil, 23 is a helium liquid level, 24 is a power lead, 25 is a normal temperature terminal, 26 is a low temperature terminal, 27 is a power lead atmospheric release valve, and 28 is a predetermined portion of the power lead 24. 1 is a first temperature element 29, a second temperature element 29 is disposed at a location other than a predetermined location of the power lead 24, 30 is a detection device for the power lead atmospheric release valve 27, and 31 is a cooled helium gas. , 32 is a cooled helium exhaust gas, and 33 is a control device.

ここで、第２の温度素子２９の配置箇所について説明する。
図２はパワーリードの常温領域から低温領域へ向かってのパワーリードの距離に対する温度特性図である。
図１、図２において、Ａは常温部、Ｂは低温部、Ｃはパワーリードの低温領域であって励磁もしくは消磁時に温度の極大値Ｍを取り得る箇所である。 Here, the arrangement | positioning location of the 2nd temperature element 29 is demonstrated.
FIG. 2 is a temperature characteristic diagram with respect to the distance of the power lead from the normal temperature region to the low temperature region of the power lead.
1 and 2, A is a normal temperature part, B is a low temperature part, and C is a low temperature region of the power lead, which is a place where a maximum value M of the temperature can be obtained during excitation or demagnetization.

図２に示すように、励磁又は消磁時には、パワーリードの形状や冷却方法によって異なるが、その動作時間中に温度の極大値Ｍを取り得る特定箇所Ｃが存在する。そのようなパワーリードの低温領域であって励磁もしくは消磁時に温度の極大値Ｍを取り得る箇所Ｃに第２の温度素子２９を配置することが望ましい。
図３は本発明の実施例を示す超電導コイル励消磁制御装置のインターロックシステム回路図である。 As shown in FIG. 2, at the time of excitation or demagnetization, there is a specific portion C where the maximum value M of the temperature can be obtained during the operation time, depending on the shape of the power lead and the cooling method. It is desirable to arrange the second temperature element 29 in the low temperature region of such a power lead and at a location C where the maximum value M of the temperature can be obtained during excitation or demagnetization.
FIG. 3 is an interlock system circuit diagram of the superconducting coil excitation demagnetization control apparatus showing an embodiment of the present invention.

この図において、第１の温度素子２８からの出力信号Ｓ１と第２の温度素子２９からの出力信号Ｓ２が共に「１」（適切）である場合には、ＡＮＤ回路３４から出力信号Ｓ３「１」が送られ、パワーリード大気開放弁２７の検知装置３０の出力信号Ｓ４が開「１」である場合にはＡＮＤ回路３５から出力信号Ｓ５「１」が制御部３６に送られ、制御部３６からは超電導コイルの励磁信号Ｓ01又は消磁信号Ｓ02を出力する。 In this figure, when the output signal S1 from the first temperature element 28 and the output signal S2 from the second temperature element 29 are both “1” (appropriate), the output signal S3 “1” from the AND circuit 34 is shown. ”And the output signal S4 of the detection device 30 of the power lead atmospheric release valve 27 is“ 1 ”opened, the output signal S5“ 1 ”is sent from the AND circuit 35 to the control unit 36, and the control unit 36 Outputs an excitation signal S 01 or a demagnetization signal S 02 of the superconducting coil.

そこで、まず、超電導コイル２２の励磁又は消磁作業前には、第１の温度素子２８からの温度情報と、第２の温度素子２９からの温度情報とをＡＮＤ条件として、適切か否かを確認し、適切である、例えば、共に「１」であり、さらに、パワーリード大気開放弁の検知装置３０からの情報が「１」（開）である場合のみ、ＡＮＤ条件で出力信号Ｓ５「１」が出力されて制御部２６からは超電導コイル２２の励磁信号Ｓ01又は消磁信号Ｓ02が出力される。 Therefore, first, before exciting or demagnetizing the superconducting coil 22, it is confirmed whether the temperature information from the first temperature element 28 and the temperature information from the second temperature element 29 are AND conditions or not. And, for example, only when both are “1” and the information from the power lead atmospheric release valve detection device 30 is “1” (open), the output signal S5 “1” under the AND condition. Is output, and the excitation signal S 01 or demagnetization signal S 02 of the superconducting coil 22 is output from the control unit 26.

したがって、パワーリード２４が十分冷却されていることが確実に確認された後に、超電導コイル２２は励磁又は消磁されることになる。
また、上記した正常時の超電導コイル２２の励磁状態から、第１の温度素子２８からの温度情報と、第２の温度素子２９からの温度情報のうち、少なくとも一方が「１」から「０」へと変化すると、動作スイッチ３５への出力信号Ｓ５は「０」となるので、制御部３６からは超電導コイルの消磁のための信号Ｓ02を出力する。したがって、超電導コイル２２の緊急消磁が行われる。また、パワーリード大気開放弁の検知装置３０からの情報が「０」（閉）となった場合にも、超電導コイル２２の緊急消磁が行われる。 Therefore, after confirming that the power lead 24 is sufficiently cooled, the superconducting coil 22 is excited or demagnetized.
Further, at least one of the temperature information from the first temperature element 28 and the temperature information from the second temperature element 29 from the excitation state of the normal superconducting coil 22 described above is “1” to “0”. and when changes to, since the output signal S5 of the operation switch 35 is "0", and outputs a signal S 02 for demagnetization of the superconducting coil from the control unit 36. Therefore, emergency demagnetization of the superconducting coil 22 is performed. Also, the emergency demagnetization of the superconducting coil 22 is also performed when the information from the power lead atmospheric release valve detection device 30 becomes “0” (closed).

このように、パワーリード２４が十分冷却されていないことが確実に確認された場合には、超電導コイルは緊急に消磁されることになる。
なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。 As described above, when it is reliably confirmed that the power lead 24 is not sufficiently cooled, the superconducting coil is urgently demagnetized.
In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

本発明の超電導コイル励消磁制御装置のインターロックシステムは、安全性に優れた超電導コイル励消磁制御装置として利用可能である。   The interlock system of the superconducting coil excitation demagnetization control device of the present invention can be used as a superconducting coil excitation demagnetization control device excellent in safety.

本発明の実施例を示す超電導コイル励消磁制御装置のインターロックシステムの模式図である。It is a schematic diagram of the interlock system of the superconducting coil excitation demagnetization control device showing an embodiment of the present invention. パワーリードの常温領域から低温領域へ向かってのパワーリードの距離に対する温度特性図である。It is a temperature characteristic figure with respect to the distance of the power lead toward the low temperature area | region from the normal temperature area | region of a power lead. 本発明の実施例を示す超電導コイル励消磁制御装置のインターロックシステムの回路図である。It is a circuit diagram of the interlock system of the superconducting coil excitation demagnetization control apparatus which shows the Example of this invention. 従来の電流リードの過熱監視装置（その１）の模式図である。It is a schematic diagram of a conventional overheat monitoring device (No. 1) for current leads. 従来の電流リードの過熱監視装置（その２）の模式図である。It is a schematic diagram of the conventional overheat monitoring device of the current lead (part 2).

２１ クライオスタット
２２ 超電導コイル
２３ ヘリウム液面
２４ パワーリード
２５ 常温端子
２６ 低温端子
２７ パワーリード大気開放弁
２８ 第１の温度素子
２９ 第２の温度素子
３０ パワーリード大気開放弁の検知装置
３１ 冷却ヘリウムガス
３２ 冷却ヘリウム排出ガス
３３ 制御装置
３４，３５ ＡＮＤ回路
３６ 制御部 21 Cryostat 22 Superconducting coil 23 Helium liquid level 24 Power lead 25 Room temperature terminal 26 Low temperature terminal 27 Power lead atmospheric release valve 28 First temperature element 29 Second temperature element 30 Power lead atmospheric release valve detector 31 Cooling helium gas 32 Cooled helium exhaust gas 33 Controller 34, 35 AND circuit 36 Controller

Claims (1)

（ａ）パワーリード大気開放弁の検知装置と、
（ｂ）パワーリードの常温端子に配置される第１の温度素子と、
（ｃ）前記パワーリードの低温領域であって励磁もしくは消磁時に温度の極大値を取り得る個所に配置される第２の温度素子と、
（ｄ）超電導コイルの励磁又は消磁を行う制御装置とを備え、
（ｅ）前記第１の温度素子と第２の温度素子からの出力信号のうち少なくとも一方が不適切であるか、または前記パワーリード大気開放弁が開放していない場合に、前記制御装置により、前記超電導コイルの緊急消磁を行う信号を出力することを特徴とする超電導コイル励消磁制御装置のインターロックシステム。 (A) a power lead atmospheric release valve detection device;
(B) a first temperature element disposed at a room temperature terminal of the power lead;
(C) a second temperature element disposed in a low temperature region of the power lead where a maximum temperature value can be obtained during excitation or demagnetization;
(D) a controller for exciting or demagnetizing the superconducting coil,
(E) When at least one of the output signals from the first temperature element and the second temperature element is inappropriate or when the power lead atmosphere release valve is not open, An interlock system for a superconducting coil excitation / demagnetization control device that outputs a signal for emergency demagnetization of the superconducting coil.
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JPH0513826A (en) * 1991-07-08 1993-01-22 Fuji Electric Co Ltd Current lead of superconducting device
JPH06140243A (en) * 1992-10-29 1994-05-20 Fuji Electric Co Ltd Current lead using oxide superconducting material
JP2001143922A (en) * 1999-11-11 2001-05-25 Toshiba Corp Superconducting magnet and circuit for protecting the same
JP2002252380A (en) * 2001-02-27 2002-09-06 Sumitomo Heavy Ind Ltd Superconducting magnet device and monitoring method therefor

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