JPH03142805A - superconducting electrical equipment - Google Patents
superconducting electrical equipmentInfo
- Publication number
- JPH03142805A JPH03142805A JP28127089A JP28127089A JPH03142805A JP H03142805 A JPH03142805 A JP H03142805A JP 28127089 A JP28127089 A JP 28127089A JP 28127089 A JP28127089 A JP 28127089A JP H03142805 A JPH03142805 A JP H03142805A
- Authority
- JP
- Japan
- Prior art keywords
- liquid nitrogen
- refrigerant
- tank
- atmospheric pressure
- cooled
- 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
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野１ この発明は、超電導電気機器に関するものである。[Detailed description of the invention] [Industrial application field 1 The present invention relates to superconducting electrical equipment.
［従来の技術］
酸化物系超電導体では、液体窒素を冷媒として使うこと
ができるため、冷媒のコスト低減は勿論、冷凍システム
が容易になり経済性のみならず、信頼性の高い機器が得
られる。また、液体窒素は絶縁油に匹徹する絶縁強度が
あるが、−旦気泡が発生すると絶縁強度が低下する。し
たがって、超電導体を高電圧部分に用い、液体窒素の絶
縁強度を期待する場合は、導体発熱時にも気泡を発生さ
せない工夫が必要である。[Conventional technology] Oxide-based superconductors can use liquid nitrogen as a refrigerant, which not only reduces the cost of refrigerants but also simplifies refrigeration systems, making it possible to obtain equipment that is not only economical but also highly reliable. . Furthermore, although liquid nitrogen has an insulating strength comparable to that of insulating oil, once bubbles are generated, the insulating strength decreases. Therefore, when using a superconductor in a high-voltage part and expecting the insulating strength of liquid nitrogen, it is necessary to take measures to prevent bubbles from being generated even when the conductor generates heat.
第３図は例えば、特開平１−２３５０８号公報に示され
た従来の超電導電気機器の１つである超電導変圧器を示
し１図において、鉄心（１）に低圧巻線〈２〉および高
圧巻線（３）が巻回されている。内側タンク（４）と外
側タンク（５）には蓋体（６）が装着されている。 （
７）、（８）は液体窒素、（９）は断熱材である。FIG. 3 shows a superconducting transformer, which is one of the conventional superconducting electric devices disclosed in Japanese Patent Application Laid-Open No. 1-23508. In FIG. 1, the iron core (1) has a low voltage winding <2> and a high voltage winding. The wire (3) is wound. A lid body (6) is attached to the inner tank (4) and the outer tank (5). (
7) and (8) are liquid nitrogen, and (9) is a heat insulating material.
酸化物系超電導体を使用した低圧巻線（２）、高圧巻線
（３）と鉄心（１）で構成された超電導変圧器は、大気
圧以上に加圧された内側タンク（４）の液体窒素（７）
で冷却されている。また、外側タンク（５〉には大気圧
状態の液体窒素（８）が貯められ、内側タンク（４）を
大気圧状態の液体窒素温度（７７，３６Ｋ）に冷却する
。つまり、内側タンク−（４〉の液体窒素（７）は過冷
却状態となっているため、低圧巻線（２）や高圧巻線（
３）が発熱して温度上昇があっても内側タンク（４）の
液体窒素（７）から気泡が発生することなく、絶縁強度
の低下を防ぐことができる。A superconducting transformer consists of a low-voltage winding (2), a high-voltage winding (3), and an iron core (1) using oxide superconductors. Nitrogen (7)
is being cooled. In addition, liquid nitrogen (8) at atmospheric pressure is stored in the outer tank (5>), and the inner tank (4) is cooled to the liquid nitrogen temperature (77,36K) at atmospheric pressure.In other words, the inner tank - ( Since the liquid nitrogen (7) in 4> is in a supercooled state, the low voltage winding (2) and high voltage winding (
3) generates heat and rises in temperature, no bubbles are generated from the liquid nitrogen (7) in the inner tank (4), and a decrease in insulation strength can be prevented.
第２図では、この発明と直接関係の無゛い、巻線からの
リードを外部に引き出すブッシングや液体窒素の冷却装
置等は省かれている。In FIG. 2, bushings for drawing out the leads from the windings, a liquid nitrogen cooling device, etc., which are not directly related to the present invention, are omitted.
［発明が解決しようとする課題］
従来の超電導電気機器は以上のように構成されているの
で、内側タンクと外側タンクの２つのタンクが必要で、
冷媒である液体窒素等の供給系も２つ必要になるなど、
装置が複雑になるという問題点があった。[Problem to be solved by the invention] Conventional superconducting electric equipment is configured as described above, so two tanks, an inner tank and an outer tank, are required.
It also requires two supply systems for refrigerant liquid nitrogen, etc.
There was a problem that the device became complicated.
この発明は上記のような問題点を解消するためになされ
たもので、内側タンクのみで過冷却状態の液体窒素を得
る超電導電気機器を得ることを目的とする。This invention was made to solve the above-mentioned problems, and its object is to obtain a superconducting electric device that can obtain supercooled liquid nitrogen using only an inner tank.
［課題を解決するための手段］
この発明に係る超電導電気機器は、大気圧以上に加圧し
た冷媒タンクの冷媒中に膨張弁および熱交換器を設置し
、これらを経由して冷媒の一部を外部に放出させる。[Means for Solving the Problems] A superconducting electric device according to the present invention includes an expansion valve and a heat exchanger installed in the refrigerant of a refrigerant tank pressurized above atmospheric pressure, and a part of the refrigerant is transferred through these. is released to the outside.
［作 用１
この発明に係る超電導電気機器は、冷媒タンクの冷媒中
に膨張弁および熱交換器を設置しこれらを経由して冷媒
の一部を外部に放出させることにより、冷媒の温度を過
冷却状態にする。[Function 1] The superconducting electric device according to the present invention can raise the temperature of the refrigerant by installing an expansion valve and a heat exchanger in the refrigerant in the refrigerant tank and releasing a part of the refrigerant to the outside via these. Let it cool down.
［実施例］
第１図はこの発明の一実施例を示し、図において、（４
）はタンク、（９）は断熱材、（１０）は膨張弁、（１
１）は熱交換器である。その他、第２図におけると同一
符号は同一部分である。[Embodiment] FIG. 1 shows an embodiment of the present invention, and in the figure, (4
) is the tank, (9) is the insulation material, (10) is the expansion valve, (1
1) is a heat exchanger. In addition, the same reference numerals as in FIG. 2 indicate the same parts.
酸化物系超電導体を使用した低圧巻線（２）、高圧巻線
（３）と鉄心（１）で構成された超電導変圧器は、大気
圧以上に加圧されたタンク（４）の液体窒素（７）で冷
却されている。また液体窒素（７）の一部は膨張弁（１
０）で大気圧で減圧され、熱交換器（１１）を経由し・
大気に放出される。このとき、タンク（４〉を大気圧状
態の液体窒素温度（７７，３６Ｋ）に冷却される。A superconducting transformer consisting of a low-voltage winding (2), a high-voltage winding (3), and an iron core (1) using oxide superconductors uses liquid nitrogen in a tank (4) pressurized above atmospheric pressure. (7) is cooled. In addition, a part of the liquid nitrogen (7) is
0) to atmospheric pressure, and then passes through the heat exchanger (11).
released into the atmosphere. At this time, the tank (4>) is cooled to a liquid nitrogen temperature (77.36 K) at atmospheric pressure.
つまり、この装置においても従来装置と同様に、タンク
（４）の液体窒素（７〉は過冷却状態となるため、低圧
巻線（２）や高圧巻線（３〉が発熱して温度上昇があっ
ても、液体窒素（７）から気泡が発生することなく、絶
縁強度の低下を防ぐことが゛できる。In other words, in this device as well as in the conventional device, the liquid nitrogen (7) in the tank (4) is in a supercooled state, so the low voltage winding (2) and the high voltage winding (3) generate heat and the temperature rises. Even if there is, bubbles will not be generated from the liquid nitrogen (7), and a decrease in insulation strength can be prevented.
この図では、この発明と直接関係の無い、巻線からのリ
ードを外部に引き出すブッシングや液体窒素の冷却装置
等は省かれている。In this figure, bushings that lead the leads from the windings to the outside, a liquid nitrogen cooling device, etc., which are not directly related to the present invention, are omitted.
なお、上記実施例では、冷媒として液体窒素、超電導電
気機器として超電導変圧器の場合について説明したが、
冷媒はヘリウム、水素、ネオン、アルゴン、フロン等、
また超電導機器としてマグネット、発電機、遮断機等で
もよく、上記実施例と同様の効果を奏する。In addition, in the above embodiment, the case was explained in which liquid nitrogen was used as the refrigerant and a superconducting transformer was used as the superconducting electrical equipment.
Refrigerants include helium, hydrogen, neon, argon, chlorofluorocarbon, etc.
Further, a magnet, a generator, a circuit breaker, etc. may be used as the superconducting device, and the same effects as in the above embodiments can be achieved.
［発明の効果］
以上説明したように、この発明によれば、大気圧以上に
加圧したタンクの冷媒中に膨張弁および熱交換器を設置
し、これらを経由して冷媒の一部を外部に放出させるよ
うにしたので、冷媒の温度を過冷却状態にすることがで
きる。このため、超電導体からの発熱が生じた場合でも
冷媒から気泡が発生することなく、冷媒の絶縁強度の低
下を防ぐことができる。[Effects of the Invention] As explained above, according to the present invention, an expansion valve and a heat exchanger are installed in the refrigerant in a tank pressurized above atmospheric pressure, and a part of the refrigerant is transferred to the outside via these. Since the refrigerant is discharged to a supercooled state, the temperature of the refrigerant can be brought to a supercooled state. Therefore, even when heat is generated from the superconductor, bubbles are not generated from the refrigerant, and a decrease in the dielectric strength of the refrigerant can be prevented.
第１図はこの発明の一実施例の立話面図、第２図は従来
の超電導電気機器の立話面図である。
（１）・・ 鉄心、（２）・・低圧巻線、（３）・・高
圧巻線、（４）・・タンク、（６）・・蓋体、（７）液
体窒素、（９）・・断熱材、（１０）・・膨張弁、（１
１）・・熱交換器。
なお、各図中、同一符号は同一または相当部分を示す。FIG. 1 is an elevational view of an embodiment of the present invention, and FIG. 2 is an elevational elevational view of a conventional superconducting electric device. (1)... Iron core, (2)... Low voltage winding, (3)... High voltage winding, (4)... Tank, (6)... Lid, (7) Liquid nitrogen, (9)...・Insulation material, (10)...Expansion valve, (1
1) Heat exchanger. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
タンクと、このタンクの内部圧力を大気圧以上とし前記
膨張弁および前記熱交換器を経由して前記冷媒の一部を
外部の大気圧部に放出させる手段とを備え、前記冷媒の
温度を過冷却状態に保持してなる超電導電気機器。A tank containing a superconducting coil, an expansion valve, a heat exchanger, and a refrigerant; the internal pressure of this tank is set to be above atmospheric pressure, and a portion of the refrigerant is transferred to an external atmospheric pressure part via the expansion valve and the heat exchanger. and means for discharging the refrigerant to maintain the temperature of the refrigerant in a supercooled state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28127089A JPH03142805A (en) | 1989-10-27 | 1989-10-27 | superconducting electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28127089A JPH03142805A (en) | 1989-10-27 | 1989-10-27 | superconducting electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03142805A true JPH03142805A (en) | 1991-06-18 |
Family
ID=17636733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28127089A Pending JPH03142805A (en) | 1989-10-27 | 1989-10-27 | superconducting electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03142805A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016101010A (en) * | 2014-11-21 | 2016-05-30 | 住友電気工業株式会社 | Superconductive cable system |
-
1989
- 1989-10-27 JP JP28127089A patent/JPH03142805A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016101010A (en) * | 2014-11-21 | 2016-05-30 | 住友電気工業株式会社 | Superconductive cable system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7193825B2 (en) | Superconducting fault current limiter | |
| JPH03142805A (en) | superconducting electrical equipment | |
| CN213935808U (en) | Non-heat conduction current lead excitation device and excitation circuit of superconducting magnet | |
| US6708503B1 (en) | Vacuum retention method and superconducting machine with vacuum retention | |
| US3187236A (en) | Means for insulating superconducting devices | |
| CN112233871A (en) | Non-heat-conducting current lead excitation device and excitation circuit for superconducting magnets | |
| JP3150507B2 (en) | Superconducting magnet device | |
| JPS61174707A (en) | Gas insulation transformer | |
| CN209087568U (en) | A kind of gas-insulated integral combined transformer | |
| JPH0720902Y2 (en) | Gas insulated transformer with tap winding | |
| JPH11262200A (en) | Superconducting power storage device | |
| JPH1197260A (en) | Superconducting transformer attached with current-limiting device | |
| JPH0831671A (en) | Superconducting induction apparatus | |
| JP4562947B2 (en) | Superconducting magnet | |
| JPS6233759B2 (en) | ||
| JPS6359256B2 (en) | ||
| JPH04119608A (en) | Superconducting transformer | |
| JP2002208511A (en) | Refrigerator cooling superconducting magnet unit | |
| JP2522255Y2 (en) | Zero-phase current transformer | |
| JPH07176425A (en) | Superconducting magnet | |
| JPH02296309A (en) | Superconductive transformer | |
| JPS5930493Y2 (en) | transformer | |
| JPH01154505A (en) | Low loss large current transformer | |
| JPH01194856A (en) | Electric motor | |
| JPS60147106A (en) | Superconductive magnet device |