JPS5942707A - Current lead - Google Patents
Current leadInfo
- Publication number
- JPS5942707A JPS5942707A JP57153254A JP15325482A JPS5942707A JP S5942707 A JPS5942707 A JP S5942707A JP 57153254 A JP57153254 A JP 57153254A JP 15325482 A JP15325482 A JP 15325482A JP S5942707 A JPS5942707 A JP S5942707A
- Authority
- JP
- Japan
- Prior art keywords
- current
- flow
- refrigerant
- current lead
- lead
- 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.)
- Granted
Links
Classifications
-
- 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
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は超電導装置における電流リードに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a current lead in a superconducting device.
従来この種の装置として、第１図に示すものがあった。A conventional device of this type is shown in FIG.
図において、（１）は超電導コイＩしｉ２Ｈよ超電導コ
イル（１）をフランジ（３）に吊るサポート、（４）は
クライオスタット、（５）は電流リード、（６）はブス
ノ〈−１７）は励４ｆ１電源、（８）は超電導コイｌし
く１）と′ｔに流リード（５）を接続するつなぎ、（９
）は冷媒（通常液体ヘリウム）、Ｑυは電流の向きを示
す矢印である。電流リード（５）は、常温に設置された
電源から、極低温部に設置された超電導コイｌしく１）
に電流を流し込（Ｊ−為の装＋Ｍ ”’Ｑゐる。電流リ
ード（５）の原理を示したものが一２図である。図中、
（１０は電流通流導体。In the figure, (1) is a superconducting coil (1) suspended from a flange (3), (4) is a cryostat, (5) is a current lead, (6) is a busno (-17) Excitation 4f1 power supply, (8) is the superconducting coil 1) and the connection connecting the current lead (5) to 't, (9
) is the refrigerant (usually liquid helium), and Qυ is the arrow indicating the direction of the current. The current lead (5) connects a power supply installed at room temperature to a superconducting coil installed at a cryogenic temperature section1).
Inject a current into (J- for + M"'Q). Figure 12 shows the principle of the current lead (5). In the figure,
(10 is a current-carrying conductor.
０４は冷媒流を示す矢印である。屯流通流臂、体ＱＯに
は１図中に矢印（１υで示した電流によるオーム損失が
発生する。この１Ａ失は冷媒流ｕカにより電流り一ド（
５）から外部に持ち出されるっ即ち、電流通流導体ψＱ
は冷媒流四により冷却される。従って、この様な電流リ
ードでは、電流通流導体００の断面積を比較１１゛シ小
ぎくできる。その結果、電流通流Ｊ！′ｉ、体す０を通
って常温から極低温部に流入する伝導熱を小さくでき、
超電導コイｆしく１）の冷媒（９）の消費１」ｔが少な
くなる。なお、一般には、電流通流薄体Ｑ１と冷媒流＠
との熱伝達を良くする為に、電流４流導体（１１ｔフィ
ン＋ｌｉ造にする場合が多い。04 is an arrow indicating the refrigerant flow. In the flow arm and body QO, an ohm loss occurs due to the current indicated by the arrow (1υ in Figure 1).This 1A loss is caused by the current reversal (
5) is carried out to the outside, that is, the current-carrying conductor ψQ
is cooled by refrigerant stream 4. Therefore, with such a current lead, the cross-sectional area of the current-carrying conductor 00 can be made smaller by 11 degrees. As a result, current flow J! 'i, the conductive heat flowing from room temperature to the cryogenic part through the body can be reduced,
The consumption of the refrigerant (9) of the superconducting coil (1) is reduced. In general, the current-carrying thin body Q1 and the refrigerant flow @
In order to improve the heat transfer with the current conductor (11t fin + li structure), it is often made of 4 current conductors.
ところで、第１図に示した様に、超電導コイル（１）を
励磁する褐には、Ｗ通２本の電流リード（５）が必要で
ある。場合によっては、８本以し必要な時もある。ここ
では、２本の場合について説明する。By the way, as shown in FIG. 1, two W current leads (5) are required to excite the superconducting coil (1). In some cases, more than 8 pieces may be required. Here, a case of two lines will be explained.
２本の電流リード（５）に流れる電流は絶対値が同じで
、方間が逆である。従って、電流通流導体０１に発生す
るオーム損失は、２本の電流リード（５）において等し
い。その為、ｌ貨媒流（２）の流礒も等しくする必装が
ある。冷媒流＠のｆｆ１ｔＥ ｉｎはクライオスタット
（４）内の圧力と外部の圧力の麦及び流路の抵抗によっ
て決まる。今、電流リード（５）内の流路の抵抗につい
て考えでみろ。冷媒は、電流リード（５）の低温端（つ
なぎ（８）の側）から流入し、電流通流導体ＱＱ中のオ
ーム発熱を吸収して、それ自身温度ヒ昇し、外部に出て
行く一２冷媒流０４は通常ガス流であるから、温度上昇
と共にガスの体積が膨張する。The currents flowing through the two current leads (5) have the same absolute value and are opposite in direction. Therefore, the ohmic loss occurring in the current carrying conductor 01 is equal in the two current leads (5). Therefore, it is necessary to equalize the flow rate of 1 cargo medium flow (2). The refrigerant flow @ff1tEin is determined by the pressure inside the cryostat (4), the external pressure and the resistance of the flow path. Now think about the resistance of the flow path in the current lead (5). The refrigerant flows in from the low-temperature end (connection (8) side) of the current lead (5), absorbs the ohmic heat generation in the current-carrying conductor QQ, raises its temperature, and flows out to the outside. Since the second refrigerant flow 04 is normally a gas flow, the volume of the gas expands as the temperature rises.
たとえば、電流リード（５）の低温端における冷媒の温
度をｉｏＪｍ流リード（５）の出口における冷媒の温度
な２５０にとすると、冷媒ガスの体積膨張は２５倍であ
る。これは、同一質量の冷媒を流す為には。For example, if the temperature of the refrigerant at the low temperature end of the current lead (5) is set to 250, which is the temperature of the refrigerant at the outlet of the ioJm flow lead (5), the volumetric expansion of the refrigerant gas is 25 times. This is in order to flow the same mass of refrigerant.
流速を２５倍にする必要がゐろことを、瀘味する。流路
の圧力損失は流速のほぼ２乗に比例して増加するから、
ＳＭ、ｔ！ｔ、リードの温度が高くなる程、ある一定
の圧力屋で電流リード中を流し得る冷媒の・貞承が減る
。その結果、電流通流導体０１の冷却が悪くなり、温度
が史にヒ昇する。この悪哨環により。It is determined that the flow rate needs to be increased 25 times. Since the pressure loss in the flow path increases approximately in proportion to the square of the flow velocity,
SM,t! The higher the lead temperature, the less refrigerant can flow through the current lead at a given pressure chamber. As a result, cooling of the current-carrying conductor 01 deteriorates, and the temperature rises significantly. Due to this evil patrol ring.
電流リード（５）が焼損することになる。この様に。The current lead (5) will burn out. Like this.
電流リード（５）は不安定な平衡点で使用されている。The current lead (5) is used at an unstable equilibrium point.
−万、温度り昇しない？Ｅ電流リードは、温度上昇した
電流リードに流す筈の冷媒も流れ込み、温度り昇しなか
った電流リードは益々良く冷却され。- 10,000, won't the temperature rise? The refrigerant that was supposed to flow into the current lead whose temperature has risen also flows into the E current lead, and the current lead whose temperature has not risen is further cooled down.
益々冷媒が流れ易くなる。以ｔの様に、２本の電流リー
ドの一方が極度に加熱され、他方が極度に冷却されると
いうアンバランスが生じる。このアンバランスは、自然
に消滅することはない。The refrigerant becomes easier to flow. As shown in t below, an imbalance occurs in which one of the two current leads is extremely heated and the other is extremely cooled. This imbalance will not disappear naturally.
この発明は、Ｌ記のような従来の欠点を除去するために
なされたもので、複数本の珀、流通流佛体を、１回路の
冷媒流で冷却することにより、従来の欠点を除去できる
電流リードを提供することを目的としている。This invention was made in order to eliminate the conventional drawbacks such as those described in L. By cooling a plurality of cylindrical tubes and circulating flow bodies with one circuit of refrigerant flow, the conventional drawbacks can be eliminated. Intended to provide current leads.
以ド、この発明の一実施例を図について説明する。第８
図はこの発明の一実施例を示し、同図において、第１図
、第２図と同符号は同一の機能をもつものを示し、□□
□は絶縁物である。第４図は叱８図を断ｍ１図で表示し
たものである。同図に示した様に、２木の電流リードを
一体化している。即ち、２本の電流通流導体四を１回路
の冷媒流（６）で〆冷却する様にｆ首ノ戎されている。Hereinafter, one embodiment of the present invention will be described with reference to the drawings. 8th
The figure shows an embodiment of the present invention. In the figure, the same reference numerals as in FIGS. 1 and 2 indicate parts having the same functions.
□ is an insulator. Figure 4 is a cross-sectional view of Figure 8. As shown in the figure, two current leads are integrated. That is, the neck is cut out so that the two current-carrying conductors 4 are cooled down by one circuit of refrigerant flow (6).
本電流リードの動作を説明する５屯＆＋ｃ１ｍ旗Ｊ！−
Ｊ、体叫の冷却商略は１回路であるから、電流通流導体
四の温１死がＬ昇し。5ton & +c1m flag J to explain the operation of this current lead! −
J. Since the cooling strategy of body shouting is one circuit, the temperature of current-carrying conductor 4 rises to L.
冷媒カスが流れにくくなった場合、クライオスタット内
に冷媒カスが溜ることになる。その結果。If the refrigerant scum becomes difficult to flow, it will accumulate inside the cryostat. the result.
クライオスタット内の圧力がＬ昇し、クライオスタット
内部と外部の間の圧力差が増加する。この圧力差の増加
は、電流リード中を流れる冷１１１ガス流を瑣ガ■させ
、電流通流導体ＱＯの冷却を良くシ。The pressure inside the cryostat increases by L, and the pressure difference between the inside and outside of the cryostat increases. This increase in pressure difference increases the flow of cold 111 gas in the current lead and improves the cooling of the current carrying conductor QO.
電流通流導体頭の温１死をト−げろ、かくして２本発明
の電流リードは安定な平衡点で運転できる。なお、第８
図、婦４図には、パイプ状のｍ流Ｊｌ！Ｉ流尋体す０を
示しているが、フィン４４を造にすれば、電流通流導体
０Ｑと冷媒流四囲の熱伝達が同ヒするので好ましい。By reducing the temperature of the current carrying conductor head, the current lead of the present invention can be operated at a stable equilibrium point. In addition, the 8th
Figure 4 shows a pipe-shaped m-flow Jl! Although the I-flow body 0 is shown, it is preferable if the fins 44 are made into a structure because the heat transfer between the current-carrying conductor 0Q and the surrounding area of the refrigerant flow is the same.
＠５図はこの発明の他の実施例をボす断面図である５図
中、 ｕｌは絶縁板であり、２本の電流通流導体（１１
を互いに絶縁するものでゐろ、２本の電流通流導体ｕｎ
が同軸状に配置されでいる。第６図は他の実施例を示す
斜視図（１部切り火きを入れて内を電を示している）で
ある。この実施例では８本の電流通流−°４１本０（１
が「ｊσ〜甲に入っている。この様な電流リードは、第
７図に等砥面路を示した様な場合、即ち、１台のクライ
オスタット中に、２台のコイルを設τなし、それぞれの
コイルの電流値を異なる値にする場合に有用でゐろ３発
明の効果は。@Figure 5 is a cross-sectional view of another embodiment of the present invention. In Figure 5, ul is an insulating plate, and two current-carrying conductors (11
The two current-carrying conductors must be insulated from each other.
are arranged coaxially. FIG. 6 is a perspective view showing another embodiment (partially with a ignition inserted to show an electric current inside). In this example, current flows through 8 wires -°41 wires 0 (1
is in the range ``jσ~A.'' Such a current lead can be used in the case where the equal abrasive surface path is shown in Fig. 7, that is, when two coils are installed in one cryostat without τ, What are the effects of the invention that are useful when the current values of each coil are set to different values?
電流通流）ｄ、体が２本の場合と同じでちる。Current flow) d, same as when there are two bodies.
以上のように、この発明にＪこれば、複数個の電流通流
幅体を１回路の電流通流導１本冷却用冷楳の旅路により
冷却したので、７ど定に動作する電流リードが得られる
効果がある。As described above, according to the present invention, a plurality of current-carrying width bodies are cooled by one current-carrying conductor in one circuit and the path of a cooling beam, so that a current lead that operates at a constant rate of 7. There are benefits to be gained.
第１区は従来の電流リードを用いた超電導装置〃を示す
原坤図、第２図は従来の電流リードの断面図、第８図は
この発明の一実施例を示す斜視図。
第４図は第８図の縦断面図、枇５図はこの発明の他の実
証例を示す縦断面図、第６図はこの発明のまた別の実施
例を示す斜視図、始７図は超電導コイルの１回磁回路な
示す等砥面Ｉｒ６である。
ｕ＋） ＋＋Ｈ’ｃ４ｉ ｂ’ｔ ＞ｍ ＩＭＥ ’！
４１本＋ （’Ｊ ・・・Ａ７ ’Ｊ４ ｊｙＥなお
、Ｎ中、同−付号は同一、又は相当量分を示す。
代 理 人 １も 野 信 −第１図
第２図
第３図 第４図
第６図 第６図
第７１閾Section 1 is an original drawing showing a superconducting device using a conventional current lead, FIG. 2 is a sectional view of a conventional current lead, and FIG. 8 is a perspective view showing an embodiment of the present invention. Fig. 4 is a longitudinal sectional view of Fig. 8, Fig. 5 is a longitudinal sectional view showing another demonstration example of the present invention, Fig. 6 is a perspective view showing another embodiment of the invention, and Fig. This is the uniform abrasive surface Ir6 shown in the one-time magnetic circuit of the superconducting coil. u+) ++H'c4i b't >m IME'!
41 + ('J...A7 'J4 jyEIn addition, the same - in N indicates the same or equivalent amount. Agent 1 Nobu Nobu - Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Figure 6 Figure 71 Threshold
Claims (1)
ードにおいて、複数個の電流通流導体を１回路の電流通
流導体冷却用冷媒の流路により冷却することを特徴とす
る電流リード。1. A current lead comprising a current-carrying conductor and a current-carrying conductor cooling refrigerant, wherein a plurality of current-carrying conductors are cooled by one circuit of a flow path of a current-carrying conductor cooling refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57153254A JPS5942707A (en) | 1982-08-31 | 1982-08-31 | Current lead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57153254A JPS5942707A (en) | 1982-08-31 | 1982-08-31 | Current lead |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5942707A true JPS5942707A (en) | 1984-03-09 |
| JPH045244B2 JPH045244B2 (en) | 1992-01-30 |
Family
ID=15558432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57153254A Granted JPS5942707A (en) | 1982-08-31 | 1982-08-31 | Current lead |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5942707A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6242209U (en) * | 1985-09-02 | 1987-03-13 | ||
| JPH0285971U (en) * | 1988-12-15 | 1990-07-06 | ||
| JPH02256206A (en) * | 1988-12-10 | 1990-10-17 | Sumitomo Electric Ind Ltd | Superconducting power lead |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5689209U (en) * | 1979-12-12 | 1981-07-16 | ||
| JPS56134785A (en) * | 1980-03-26 | 1981-10-21 | Hitachi Ltd | Super conductive device |
| JPS56150882A (en) * | 1980-04-23 | 1981-11-21 | Toshiba Corp | Superconductive magnet current supplying device |
| JPS5787106A (en) * | 1980-11-20 | 1982-05-31 | Mitsubishi Electric Corp | Super conductive magnet device |
-
1982
- 1982-08-31 JP JP57153254A patent/JPS5942707A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5689209U (en) * | 1979-12-12 | 1981-07-16 | ||
| JPS56134785A (en) * | 1980-03-26 | 1981-10-21 | Hitachi Ltd | Super conductive device |
| JPS56150882A (en) * | 1980-04-23 | 1981-11-21 | Toshiba Corp | Superconductive magnet current supplying device |
| JPS5787106A (en) * | 1980-11-20 | 1982-05-31 | Mitsubishi Electric Corp | Super conductive magnet device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6242209U (en) * | 1985-09-02 | 1987-03-13 | ||
| JPH02256206A (en) * | 1988-12-10 | 1990-10-17 | Sumitomo Electric Ind Ltd | Superconducting power lead |
| JPH0285971U (en) * | 1988-12-15 | 1990-07-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH045244B2 (en) | 1992-01-30 |
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