JP3199819B2 - Superconducting magnetic bearing device and rotating body position fixing method thereof - Google Patents
Superconducting magnetic bearing device and rotating body position fixing method thereofInfo
- Publication number
- JP3199819B2 JP3199819B2 JP05048092A JP5048092A JP3199819B2 JP 3199819 B2 JP3199819 B2 JP 3199819B2 JP 05048092 A JP05048092 A JP 05048092A JP 5048092 A JP5048092 A JP 5048092A JP 3199819 B2 JP3199819 B2 JP 3199819B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature superconductor
- rotating body
- section
- magnetic field
- magnetic bearing
- 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
Links
- 238000000034 method Methods 0.000 title claims description 7
- 239000002887 superconductor Substances 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 20
- 238000005339 levitation Methods 0.000 description 9
- 239000013590 bulk material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 102220057728 rs151235720 Human genes 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0436—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part
- F16C32/0438—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part with a superconducting body, e.g. a body made of high temperature superconducting material such as YBaCuO
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/55—Flywheel systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Superconductive Dynamoelectric Machines (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、たとえば電力貯蔵用
フライホイ−ル装置などの高温超電導体を用いた軸受装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device using a high-temperature superconductor such as a flywheel device for storing electric power.
【０００２】[0002]
【従来の技術】超電導コイルを用いた超電導磁気軸受装
置は、例えば図６（特開昭５７−９５６４５号公報）の
ように制御系を設ける方法が提案されている。しかし高
温超電導体の磁束ピン止め力を応用し、高温超電導体と
永久磁石を対向させて構成する高温超電導磁気軸受の位
置ぎめについては、いまだ現実的な方法がなかった。2. Description of the Related Art As a superconducting magnetic bearing device using a superconducting coil, for example, a method of providing a control system as shown in FIG. 6 (JP-A-57-95645) has been proposed. However, there has been no practical method for positioning a high-temperature superconducting magnetic bearing in which a high-temperature superconductor is applied with a magnetic flux pinning force and a high-temperature superconductor and a permanent magnet are opposed to each other.
【０００３】[0003]
【発明が解決しようとする課題】上記高温超電導磁気軸
受（以下、超電導磁気軸受という）では、高温超電導体
を所定の温度まで冷却して初めて軸受としての機能を発
揮するが、その際高温超電導体と永久磁石の間隔を、初
めから所定の間隔に固定して高温超電導体を冷却したの
では浮上力は得られないという問題がある。すなわち、
高温超電導体と永久磁石の間隔は、冷却前の間隔よりも
小さくすることにより浮上力が発生するので、所定の間
隔よりも必ず大きくした状態で高温超電導体を冷却し、
冷却後に所定の間隔まで詰める作業が必要であるという
問題があった。In the above-mentioned high-temperature superconducting magnetic bearing (hereinafter referred to as "superconducting magnetic bearing"), the function as a bearing is exhibited only when the high-temperature superconductor is cooled to a predetermined temperature. If the space between the permanent magnet and the permanent magnet is fixed at a predetermined distance from the beginning and the high-temperature superconductor is cooled, there is a problem that a levitation force cannot be obtained. That is,
Since the levitation force is generated by making the interval between the high-temperature superconductor and the permanent magnet smaller than the interval before cooling, the high-temperature superconductor is cooled while being always larger than a predetermined interval,
There has been a problem in that it is necessary to perform an operation of packing to a predetermined interval after cooling.
【０００４】この発明は、上記のような問題点を解決す
るためになされたもので、超電導磁気軸受を最初に冷却
して機能させる際の位置決めを可能とした超電導磁気軸
受け装置及びその回転体位置固定方法を提供することを
目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a superconducting magnetic bearing device capable of positioning the superconducting magnetic bearing when it is first cooled to function, and a rotating body position thereof. It is intended to provide a fixing method.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するた
め、この発明は、所定の温度で冷却されている高温超電
導体部、この高温超電導体部に対向して回転体に取り付
けられ、該回転体を浮上させている磁界発生部、上記高
温超電導体部を冷却する際に上記高温超電導体部と磁界
発生部との間隔を調整するために、上下方向の位置を固
定する移動体を有する位置固定装置を上記回転体の上方
と下方の両方に備えたことを特徴とする超電導磁気軸受
装置としている。To achieve this object, the present invention relates to a high-temperature superconductor section cooled at a predetermined temperature, and attached to a rotating body so as to face the high-temperature superconductor section, A magnetic field generating part for lifting the body, a position having a moving body for fixing a vertical position in order to adjust an interval between the high-temperature superconductor part and the magnetic field generating part when cooling the high-temperature superconductor part A superconducting magnetic bearing device characterized in that fixing devices are provided both above and below the rotating body.
【０００６】また、高温超電導体部と対向した磁界発生
部が設けられた回転体を、初期冷却時に、高温超電導体
部と磁界発生部の間隔を位置固定装置によって運転時の
所定位置よりできるだけ離して固定し、上記高温超電導
体部の冷却後の位置設定操作において、上記位置固定装
置を用いて上記所定位置より上記高温超電導体部と上記
磁界発生部を近づけるように押しつけた後、上記位置固
定装置が加えている荷重を除き上記所定位置に固定する
ことを特徴とする超電導磁気軸受装置の回転体位置固定
方法としている。Further, at the time of initial cooling, the rotating body provided with the magnetic field generating portion facing the high-temperature superconductor portion is separated from the predetermined position during operation by a position fixing device as much as possible between the high-temperature superconductor portion and the magnetic field generating portion. In the position setting operation after cooling of the high-temperature superconductor section, the high-temperature superconductor section and the magnetic field generating section are pressed from the predetermined position using the position fixing device so as to be closer to each other, and then the position is fixed. A method of fixing a rotating body position of a superconducting magnetic bearing device, characterized in that the rotating body of the superconducting magnetic bearing device is fixed at the predetermined position except for a load applied by the device.
【０００７】[0007]
【作用】この発明における超電導磁気軸受装置は、初期
位置設定用の機械式の位置固定装置を備えているので、
位置固定装置により冷却時にできるだけ高温超電導体部
と永久磁石を離し、冷却後に高温超電導体部と永久磁石
の距離を近づけた後に離すことによりバネ定数は増加す
る。The superconducting magnetic bearing device according to the present invention has a mechanical position fixing device for setting an initial position.
The spring constant is increased by separating the high-temperature superconductor portion and the permanent magnet as much as possible during cooling by the position fixing device, and then increasing the distance between the high-temperature superconductor portion and the permanent magnet after cooling.
【０００８】[0008]
【実施例】以下、この発明の一実施例を示す図に基づい
て説明する。図１はこの発明の実施例を示す断面図であ
る。また、図２はこの発明の実施例における冷却中の状
態を示す断面図、図３はこの発明の実施例における冷却
後の位置設定作業中の状態を示す断面図、図４はこの発
明の実施例における位置設定直後の状態を示す断面図、
図５はこの発明の実施例における位置設定の際の浮上力
の変化を示すグラフである。図において、１１は容器、
１２はこの容器１１に設置された高温超電導体部、１３
はこの高温超電導体部１２によって浮上しているフライ
ホイ−ル、１５はこのフライホイ−ル１３に埋め込まれ
た永久磁石、１６は高温超電導体の冷却時にこの永久磁
石１５と高温超電導体部１２との距離を設定するための
位置固定装置である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 1 is a sectional view showing an embodiment of the present invention. FIG. 2 is a sectional view showing a state during cooling in the embodiment of the present invention, FIG. 3 is a sectional view showing a state during position setting work after cooling in the embodiment of the present invention, and FIG. 4 is an embodiment of the present invention. Sectional view showing the state immediately after the position setting in the example,
FIG. 5 is a graph showing a change in levitation force at the time of position setting in the embodiment of the present invention. In the figure, 11 is a container,
Reference numeral 12 denotes a high-temperature superconductor portion installed in the container 11, 13
Is a flywheel floating by the high-temperature superconductor portion 12, 15 is a permanent magnet embedded in the flywheel 13, and 16 is a connection between the permanent magnet 15 and the high-temperature superconductor portion 12 when the high-temperature superconductor is cooled. It is a position fixing device for setting a distance.
【０００９】上記の超電導磁気軸受装置において、高温
超電導体部１２に例えば溶融法で作製したY系のバルク
材を用い、これと対向する磁界発生部である永久磁石１
５はリング状をしたものである。高温超電導体を冷却す
る前は超電導軸受の浮上力は無い。高温超電導体に磁界
を加えた状態で冷却した場合、浮上力は小さく、実用的
な力は得られない。そこで永久磁石１５等の磁界中で冷
却する場合にも必ず冷却後位置を移動しなければ所定の
浮上力が得られない。そのため本発明においては、上下
方向の位置を固定する移動体、例えば油圧式の可動軸を
備えた位置固定装置１６を設け、初期位置を設定し、超
電導体部１２を冷却後、位置センサー１７で回転体であ
るフライホイール１３の傾き等を確認しながら位置固定
装置１６の可動軸を動かし所定の位置で回転体１３を固
定する。また、上記油圧式の位置固定装置１６は電動式
であってもよく同様の効果を奏する。In the above-described superconducting magnetic bearing device, the high-temperature superconductor portion 12 is made of, for example, a Y-based bulk material produced by a melting method, and a permanent magnet 1 which is a magnetic field generating portion opposed to the bulk material.
Reference numeral 5 denotes a ring. Before cooling the high-temperature superconductor, there is no levitation force of the superconducting bearing. If the high-temperature superconductor is cooled in a state where a magnetic field is applied, the levitation force is small, and a practical force cannot be obtained. Therefore, even when cooling in the magnetic field of the permanent magnet 15 or the like, a predetermined levitation force cannot be obtained unless the position after cooling is always moved. Therefore, in the present invention, a moving body for fixing the position in the vertical direction, for example, a position fixing device 16 having a hydraulic movable shaft is provided, an initial position is set, and after the superconductor section 12 is cooled, the position sensor 17 is used. The movable shaft of the position fixing device 16 is moved while confirming the inclination and the like of the flywheel 13 as a rotating body, and the rotating body 13 is fixed at a predetermined position. Further, the hydraulic position fixing device 16 may be an electric type and has the same effect.
【００１０】この発明の第２の発明では、この超電導磁
気軸受装置の位置固定において、図５に示すように初期
冷却時において超電導体部１２と永久磁石１５の距離を
取るに従い、ある浮上位置Aにおける浮上力は大きくな
る。従って、図５のの場合のように、初期冷却時に距
離を大きく取り、冷却後に位置Aを越え回転浮上体を超
電導体部１２に押しつけるように位置Dにした後に、位
置Aに固定するとバネ常数はの場合に比べ高くなり回
転時の回転体の姿勢方向性が向上する。In the second invention of the present invention, when the position of the superconducting magnetic bearing device is fixed, as shown in FIG. 5, as the distance between the superconductor portion 12 and the permanent magnet 15 is increased during initial cooling, a certain floating position A The levitation force at becomes larger. Therefore, as shown in FIG. 5, a large distance is taken at the time of initial cooling, and after cooling, the rotating floating body is moved to the position D so as to press the rotating levitation body against the superconductor portion 12 and then fixed at the position A. The height is higher than that of the case, and the orientation of the rotating body during rotation is improved.
【００１１】[0011]
【発明の効果】以上のように、この発明の超電導磁気軸
受装置によれば、初期位置設定用のの機械式の位置固定
装置を備えているので、初期位置の設定用の常電導コイ
ルや位置の制御系が不要である。また、位置固定装置に
より冷却時にできるだけ高温超電導体部と永久磁石を離
し、冷却後に高温超電導体部と永久磁石の距離を近づけ
た後に離すことによりバネ定数は増加するという効果が
ある。As described above, according to the superconducting magnetic bearing device of the present invention, since the mechanical position fixing device for setting the initial position is provided, the normal conducting coil and the position for setting the initial position are provided. No control system is required. In addition, there is an effect that the spring constant is increased by separating the high-temperature superconductor portion from the permanent magnet as much as possible during cooling by the position fixing device, and increasing the distance between the high-temperature superconductor portion and the permanent magnet after cooling.
【図１】この発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】この発明の一実施例の他の状態を示す断面図で
ある。FIG. 2 is a sectional view showing another state of the embodiment of the present invention.
【図３】この発明の一実施例の他の状態を示す断面図で
ある。FIG. 3 is a sectional view showing another state of the embodiment of the present invention.
【図４】この発明の一実施例の他の状態を示す断面図で
ある。FIG. 4 is a sectional view showing another state of the embodiment of the present invention.
【図５】この発明の第２の発明を説明するための浮上力
の変化を示すグラフである。FIG. 5 is a graph showing a change in levitation force for explaining a second invention of the present invention.
１１ 容器 １２ 高温超電導体部 １３ フライホイ−ル １５ 永久磁石 １６ 位置固定装置 １７ 位置センサ− DESCRIPTION OF SYMBOLS 11 Container 12 High temperature superconductor part 13 Flywheel 15 Permanent magnet 16 Position fixing device 17 Position sensor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中村 史朗 尼崎市塚口本町８丁目１番１号 三菱電 機株式会社 中央研究所内 (56)参考文献 特開 平４−165119（ＪＰ，Ａ) 特開 平４−370417（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16C 32/00 - 32/06 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shiro Nakamura 8-1-1, Tsukaguchi-Honmachi, Amagasaki-shi Mitsubishi Electric Corporation Central Research Laboratory (56) References JP-A-4-165119 (JP, A) Hei 4-370417 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F16C 32/00-32/06
Claims (2)
体部、この高温超電導体部に対向して回転体に取り付け
られ、該回転体を浮上させている磁界発生部、上記高温
超電導体部を冷却する際に上記高温超電導体部と磁界発
生部との間隔を調整するために、上下方向の位置を固定
する移動体を有する位置固定装置を上記回転体の上方と
下方の両方に備えたことを特徴とする超電導磁気軸受装
置。1. A high-temperature superconductor section cooled at a predetermined temperature, a magnetic field generating section attached to a rotating body facing the high-temperature superconductor section and causing the rotating body to float, and the high-temperature superconductor section In order to adjust the distance between the high-temperature superconductor section and the magnetic field generating section when cooling the apparatus, a position fixing device having a moving body for fixing a vertical position is provided both above and below the rotating body. A superconducting magnetic bearing device.
設けられた回転体を、初期冷却時に、高温超電導体部と
磁界発生部の間隔を位置固定装置によって運転時の所定
位置よりできるだけ離して固定し、上記高温超電導体部
の冷却後の位置設定操作において、上記位置固定装置を
用いて上記所定位置より上記高温超電導体部と上記磁界
発生部を近づけるように押しつけた後、上記位置固定装
置が加えている荷重を除き上記所定位置に固定すること
を特徴とする超電導磁気軸受装置の回転体位置固定方
法。2. A rotating body provided with a magnetic field generating section facing a high-temperature superconductor section is separated from a predetermined position during operation by a position fixing device as much as possible between a high-temperature superconductor section and a magnetic field generating section during initial cooling. In the position setting operation after cooling of the high-temperature superconductor section, the high-temperature superconductor section and the magnetic field generating section are pressed from the predetermined position using the position fixing device so as to be closer to each other, and then the position is fixed. A method of fixing a rotating body position of a superconducting magnetic bearing device, wherein the rotating body is fixed at the predetermined position except for a load applied by the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05048092A JP3199819B2 (en) | 1992-03-09 | 1992-03-09 | Superconducting magnetic bearing device and rotating body position fixing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05048092A JP3199819B2 (en) | 1992-03-09 | 1992-03-09 | Superconducting magnetic bearing device and rotating body position fixing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05248438A JPH05248438A (en) | 1993-09-24 |
| JP3199819B2 true JP3199819B2 (en) | 2001-08-20 |
Family
ID=12860076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05048092A Expired - Fee Related JP3199819B2 (en) | 1992-03-09 | 1992-03-09 | Superconducting magnetic bearing device and rotating body position fixing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3199819B2 (en) |
-
1992
- 1992-03-09 JP JP05048092A patent/JP3199819B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05248438A (en) | 1993-09-24 |
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