JP2885195B2 - Superconducting rotor - Google Patents
Superconducting rotorInfo
- Publication number
- JP2885195B2 JP2885195B2 JP8203431A JP20343196A JP2885195B2 JP 2885195 B2 JP2885195 B2 JP 2885195B2 JP 8203431 A JP8203431 A JP 8203431A JP 20343196 A JP20343196 A JP 20343196A JP 2885195 B2 JP2885195 B2 JP 2885195B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- low
- balance weight
- temperature
- vibration
- 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
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
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は超電導回転子の振動
調整を改良することにある。[0001] The present invention relates to an improvement in vibration regulation of a superconducting rotor.
【０００２】[0002]
【従来の技術】超電導回転子は低温回転子と常温回転子
から構成される。超電導巻線を保持する低温回転子は内
部に液体ヘリウム等を注入し、超電導巻線を４Ｋ等の極
低温に冷却するが、液体ヘリウム等の寒冷の消費量を低
減するため、低温回転子の外側に配置される常温回転子
との間を真空とし、断熱構造としている。2. Description of the Related Art A superconducting rotor comprises a low-temperature rotor and a normal-temperature rotor. The low-temperature rotor holding the superconducting winding injects liquid helium or the like into the inside and cools the superconducting winding to a very low temperature such as 4K, but in order to reduce the consumption of cold such as liquid helium, the low-temperature rotor A vacuum is formed between the rotor and the room-temperature rotor disposed on the outside to provide a heat insulating structure.
【０００３】回転電機の中でタービン発電機等の高速回
転体は一般に回転子の固有クリチカルスピードを越える
速度で回転させるため、固有クリチカルスピードでの振
動を低減するために回転子のいくつかの部分にバランス
ウェートを取付け、振動を調整できる構造としている。[0003] In a rotating electric machine, a high-speed rotating body such as a turbine generator is generally rotated at a speed exceeding the intrinsic critical speed of the rotor, and some parts of the rotor are reduced to reduce vibration at the intrinsic critical speed. The balance weight is attached to the motor to adjust the vibration.
【０００４】しかしながら、超電導回転子の低温回転子
の振動を低減する際には組立の途中で常温回転子を取付
ける前の低温回転子単独の状態ではいくつかの部分にバ
ランスウェートを取付け、振動調整することは可能であ
るが、常温回転子を取付け、低温回転子と常温回転子間
を真空にした後は低温回転子の振動調整のためバランス
ウェートを取付けることは真空を破り、回転子を解体し
ないことにはできず、ほとんど困難な作業であった。However, in order to reduce the vibration of the low-temperature rotor of the superconducting rotor, the balance weight is attached to several parts in the state of the low-temperature rotor alone before the normal-temperature rotor is mounted during the assembly, and the vibration is adjusted. It is possible, but after installing the normal temperature rotor and applying a vacuum between the low temperature rotor and the normal temperature rotor, installing a balance weight to adjust the vibration of the low temperature rotor breaks the vacuum and disassembles the rotor. It was almost impossible work to do.
【０００５】本願では低温回転子の真空部の外部にバラ
ンスウェート取付部を設けたことを特徴とし、このバラ
ンスウェート取付部にバランスウェートを取付け、振動
調整を容易に実施できるようにする。The present invention is characterized in that a balance weight mounting portion is provided outside the vacuum portion of the low-temperature rotor, and a balance weight is mounted on the balance weight mounting portion so that vibration adjustment can be easily performed.
【０００６】超電導回転子の振動低減のために特許第16
34468 号，特許第1661067 号の如く、回転子の製造過程
におけるアンバランス分を低減するための方法は提案さ
れているが、回転子の完成時における振動低減技術に関
してはほとんど提案されていなかった。Patent No. 16 for reducing vibration of a superconducting rotor
As disclosed in Japanese Patent No. 34468 and Japanese Patent No. 1661067, a method for reducing the unbalance in the manufacturing process of the rotor has been proposed. However, there has been almost no proposal on a technique for reducing vibration when the rotor is completed.
【０００７】[0007]
【発明が解決しようとする課題】従来は超電導回転子の
振動を低減するためには、製作途中の低温回転子単独で
の振動調整を実施した後、常温回転子を取付け、低温回
転子と常温回転子間を真空にした後は、低温回転子の振
動調整のためバランスウェートを取付けることは非常に
困難であり、振動を低減できない欠点があった。Conventionally, in order to reduce the vibration of the superconducting rotor, after adjusting the vibration of the low-temperature rotor alone during manufacture, a normal-temperature rotor is attached, and the low-temperature rotor and the normal temperature are adjusted. After the rotors are evacuated, it is very difficult to attach a balance weight for adjusting the vibration of the low-temperature rotor, and there is a disadvantage that the vibration cannot be reduced.
【０００８】超電導回転子を常温で振動調整を実施し、
振動を低減しても低温回転子を極低温に冷却すると材料
の不均質，冷却の不均一に伴い、低温回転子に軸曲りが
生じ、低温でのアンバランス分が増加し、低温回転子の
振動が増加し、振動調整をする必要があった。The vibration of the superconducting rotor is adjusted at room temperature,
Even if the vibration is reduced, if the low-temperature rotor is cooled to a very low temperature, the low-temperature rotor will bend and the unbalance at the low temperature will increase due to the inhomogeneity of the material and the uneven cooling. The vibration increased, and it was necessary to adjust the vibration.
【０００９】本発明の目的は、振動調整を容易にした超
電導回転子を提供することにある。It is an object of the present invention to provide a superconducting rotator that facilitates vibration adjustment.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成する本発
明に係る超電導回転子は、超電導巻線を保持する低温回
転子と、低温回転子の外側に設けられた常温回転子とを
備え、低温回転子と常温回転子との間には真空部を有す
るものであって、低温回転子の真空部の外部にバランス
ウェート取付用溝を備えたバランスウェート取付部を設
け、バランスウェート取付部のバランスウェート取付用
溝と対向する常温回転子部分にバランスウェート取付用
穴を設けたものである。 A superconducting rotor according to the present invention , which achieves the above object, comprises a low-temperature circuit for holding a superconducting winding.
The trochanter and the normal temperature rotor provided outside the low temperature rotor
Equipped with a vacuum section between the low temperature rotor and the normal temperature rotor
That is balanced outside the vacuum part of the low-temperature rotor.
A balance weight mounting part with a weight mounting groove is provided, and for the balance weight mounting of the balance weight mounting part
For mounting balance weight on the normal temperature rotor part facing the groove
A hole is provided.
【００１１】[0011]
【発明の実施の形態】以下本発明の実施例を説明する。Embodiments of the present invention will be described below.
【００１２】図２は従来の超電導回転子の構造を示す。FIG. 2 shows the structure of a conventional superconducting rotor.
【００１３】超電導回転子は低温回転子１，常温回転子
２で構成される。低温回転子１には超電導巻線３を保持
する。また、超電導巻線３を冷却するために、液体ヘリ
ウム４等の冷媒を低温回転子１の内部に保持できる構造
となっている。超電導回転子は軸受５で支持される。低
温回転子１，常温回転子２間にはベローズ６を設け、低
温回転子１と常温回転子２間を熱侵入を低減するため真
空に保持する。また低温回転子１が常温から低温に冷却
されて熱収縮した際にベローズ６が低温回転子１と常温
回転子２間の熱収縮差を吸収する役目をもつ。低温回転
子１が冷却されて材料の不均質，冷却の不均一に伴い、
低温回転子１の軸曲りが生じ、アンバランスが生じても
低温回転子１は真空中にあるため、外部からバランスウ
ェートを取付けることは非常に困難であった。The superconducting rotor comprises a low-temperature rotor 1 and a normal-temperature rotor 2. The superconducting winding 3 is held in the low-temperature rotor 1. Further, in order to cool the superconducting winding 3, a structure is provided in which a refrigerant such as liquid helium 4 can be held inside the low-temperature rotor 1. The superconducting rotor is supported by bearings 5. A bellows 6 is provided between the low temperature rotor 1 and the normal temperature rotor 2 to maintain a vacuum between the low temperature rotor 1 and the normal temperature rotor 2 in order to reduce heat intrusion. Further, when the low temperature rotor 1 is cooled from room temperature to low temperature and thermally contracts, the bellows 6 has a role of absorbing a difference in thermal contraction between the low temperature rotor 1 and the normal temperature rotor 2. As the low-temperature rotor 1 is cooled, the material is inhomogeneous and the cooling is not uniform.
Even if the low-temperature rotor 1 is bent and the unbalance occurs, the low-temperature rotor 1 is in a vacuum, so it is very difficult to attach a balance weight from the outside.
【００１４】図１に本発明の実施例を示す。本発明では
低温回転子１の真空部の外部にバランスウェート取付部
７を設けたことを特徴とする。８はバランスウェート取
付け用の溝であり、この位置にバランスウェートを取付
ける。またバランスウェートは常温回転子２に設けられ
たバランスウェート取付け用穴９を通し、外部から取付
けることが可能である。このバランスウェート取付部は
真空部の外部にあるため、振動調整を実施するために、
バランスウェートを簡単に取付けることが可能である。FIG. 1 shows an embodiment of the present invention. The present invention is characterized in that a balance weight mounting part 7 is provided outside the vacuum part of the low-temperature rotor 1. Reference numeral 8 denotes a groove for attaching a balance weight, at which the balance weight is attached. The balance weight can be attached from the outside through a balance weight attachment hole 9 provided in the normal temperature rotor 2. Since this balance weight mounting part is outside the vacuum part, to carry out vibration adjustment,
The balance weight can be easily attached.
【００１５】[0015]
【発明の効果】超電導回転子の低温回転子と常温回転子
の間は真空のため、従来は低温回転子を極低温に冷却し
た後は、低温回転子の振動が大きくても低温回転子を常
温まで昇温し、低温回転子と常温回転子間の真空を破
り、回転子を解体しないことにはバランスウェートを取
付けることができなかった。この作業を実施するために
はかなりの期間が必要となり、ほとんど不可能な作業で
あった。The vacuum between the low-temperature rotor and the normal-temperature rotor of the superconducting rotor has been conventionally used. If the temperature was raised to room temperature, the vacuum between the low temperature rotor and the room temperature rotor was broken, and the rotor was not dismantled, the balance weight could not be attached. This operation required a considerable period of time and was almost impossible.
【００１６】本発明に係る超電導回転子によれば、低温
回転子の真空部の外部にバランスウェート取付用溝を備
えたバランスウェート取付部を設け、バランスウェート
部のバランスウェート取付用溝と対向する常温回転子部
分にバランスウェート取付用穴を設けたので、回転子を
解体することなくバランスウェートを簡単に取付けるこ
とができ、低温回転子の振動調整を容易に実施できる。 According to the superconducting rotor according to the present invention, a balance weight mounting groove is provided outside the vacuum portion of the low temperature rotor.
The balance weight mounting part
Temperature rotor facing the balance weight mounting groove
The balance weight mounting hole is provided for
Easy installation of balance weight without dismantling
Thus, the vibration adjustment of the low-temperature rotor can be easily performed.
【００１７】図３（ａ），図３（ｂ）で本発明の振動調
整の効果を説明する。解析は定格３６００rpm の超電導
回転子で実施した。図３（ａ）は低温回転子にアンバラ
ンスが生じた時の振動の解析例を示す。横軸が回転速度
(rpm）であり、縦軸が振動値（μｍ）である。回転速度
を上昇していくと、回転子の固有クリチカルスピードで
振動が増大する。この解析例では２３５０rpm，３４０
０rpmに固有クリチカルスピードが存在し、各々振動が
６５μｍ，１５０μｍほど振動する。図３(ｂ)が本発明
の低温ロータのバランスウェート取付部にバランスウェ
ートを取付けた振動調整後である。図３(ａ）で見られ
た２３５０rpm−６５μｍ，３４００rpm−１５０μｍの
振動がバランスウェートを取付けることにより振動を２
５μｍ以下に低減できることが判る。FIGS. 3A and 3B illustrate the effect of the vibration adjustment of the present invention. The analysis was performed with a superconducting rotor rated at 3600 rpm. FIG. 3A shows an example of vibration analysis when imbalance occurs in the low-temperature rotor. The horizontal axis is the rotation speed
(rpm), and the vertical axis is the vibration value (μm). As the rotation speed increases, the vibration increases at the inherent critical speed of the rotor. In this analysis example, 2350 rpm, 340
There is an intrinsic critical speed at 0 rpm, and the vibrations vibrate about 65 μm and 150 μm, respectively. FIG. 3B shows the state after the vibration adjustment in which the balance weight is attached to the balance weight attachment portion of the low-temperature rotor of the present invention. The vibration of 2350 rpm-65 μm and 3400 rpm-150 μm seen in FIG.
It can be seen that it can be reduced to 5 μm or less.
【００１８】このように本発明を適用すれば簡単に振動
を低減することが可能となるので振動調整が容易になる
ことが判る。As described above, it can be understood that the application of the present invention makes it possible to easily reduce the vibration, thereby facilitating the vibration adjustment.
【図１】本発明のバランスウェート取付部を設けた超電
導回転子の側断面図。FIG. 1 is a side sectional view of a superconducting rotor provided with a balance weight mounting portion according to the present invention.
【図２】従来型の超電導回転子の側断面図。FIG. 2 is a side sectional view of a conventional superconducting rotor.
【図３】（ａ）は低温回転子にアンバランスが生じた時
のアンバランス調整前の振動の解析例を示す特性図、
（ｂ）は本発明の低温ロータのバランスウェート取付部
にバランスウェートを取付けた振動調整後の解析例を示
す特性図である。FIG. 3A is a characteristic diagram showing an example of analysis of vibration before imbalance adjustment when imbalance occurs in a low-temperature rotor,
(B) is a characteristic diagram showing an analysis example after vibration adjustment in which the balance weight is attached to the balance weight attachment portion of the low-temperature rotor of the present invention.
１…低温回転子、２…常温回転子、３…超電導巻線、４
…液体ヘリウム、５…軸受、６…ベローズ、７…バラン
スウェート取付部、８…バランスウェート取付け用溝、
９…バランスウェート取付け用穴。DESCRIPTION OF SYMBOLS 1 ... Low temperature rotor, 2 ... Normal temperature rotor, 3 ... Superconducting winding, 4
... Liquid helium, 5 ... Bearing, 6 ... Bellows, 7 ... Balance weight mounting part, 8 ... Balance weight mounting groove,
9 ... Balance weight mounting hole.
フロントページの続き (72)発明者 千葉 陽一郎 茨城県日立市幸町三丁目１番１号 株式 会社 日立製作所 日立工場内 (56)参考文献 特開 平８−51767（ＪＰ，Ａ) 特開 昭54−124209（ＪＰ，Ａ) 実開 昭58−97988（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) H02K 55/04 ZAA Continuation of the front page (72) Inventor Yoichiro Chiba 3-1-1 Kochi-cho, Hitachi-shi, Ibaraki Hitachi, Ltd. Hitachi Plant (56) References JP-A-8-51767 (JP, A) JP-A Sho54 −124209 (JP, A) Actually open 58-97988 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) H02K 55/04 ZAA
Claims (1)
温回転子の外側に設けられた常温回転子とを備え、前記
低温回転子と前記常温回転子との間には真空部を有する
超電導回転子において、前記低温回転子の真空部の外部
にバランスウェート取付用溝を備えたバランスウェート
取付部を設け、該バランスウェート取付部のバランスウ
ェート取付用溝と対向する前記常温回転子部分にバラン
スウェート取付用穴を設けたことを特徴とする超電導回
転子。A low-temperature rotor for holding a superconducting winding ;
And a cold rotor disposed outside the hot rotor, in <br/> superconducting rotor having a vacuum portion between the cold rotor and said cold rotor, vacuum portion of said cold rotor externally provided balance weight mounting portion having a balance weight mounting groove of the balance of the balance weight mounting portion U
A balun is applied to the normal temperature rotor
A superconducting rotor characterized by having a weight mounting hole .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8203431A JP2885195B2 (en) | 1996-08-01 | 1996-08-01 | Superconducting rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8203431A JP2885195B2 (en) | 1996-08-01 | 1996-08-01 | Superconducting rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1052029A JPH1052029A (en) | 1998-02-20 |
| JP2885195B2 true JP2885195B2 (en) | 1999-04-19 |
Family
ID=16473982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8203431A Expired - Fee Related JP2885195B2 (en) | 1996-08-01 | 1996-08-01 | Superconducting rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2885195B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10057664A1 (en) | 2000-11-21 | 2002-05-29 | Siemens Ag | Superconducting device with a cold head of a refrigeration unit thermally coupled to a rotating, superconducting winding |
| WO2008110186A1 (en) * | 2007-03-14 | 2008-09-18 | Zenergy Power Gmbh | Torque transmission means for the rotationally fixed connection of a shaft and a rotor |
| GB2454008B (en) * | 2007-10-25 | 2012-05-02 | Converteam Technology Ltd | A rotor or a stator for a superconducting electrical machine |
-
1996
- 1996-08-01 JP JP8203431A patent/JP2885195B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1052029A (en) | 1998-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7667366B2 (en) | Rotor winding shield for a superconducting electric generator | |
| JP2885195B2 (en) | Superconducting rotor | |
| JPH10235416A (en) | Roll device incorporated with motor for rolling and rolling device using this roll device | |
| JPH10174355A (en) | Core-less motor | |
| JP3857649B2 (en) | Machine comprising superconducting windings arranged on a winding support and holding means for holding the winding support | |
| JP2796055B2 (en) | Superconducting rotating electric machine rotor | |
| JP2002078293A (en) | Rotary electric machine | |
| KR200277959Y1 (en) | Side support structure of rotor | |
| JP2603002B2 (en) | Superconducting rotating electric machine rotor | |
| KR0123248Y1 (en) | Head drum assembly | |
| JPH10285906A (en) | Rotor of superconductive dynamoelectric machine | |
| CN113258714B (en) | Adjustable and controllable pump oil cooling method for flywheel motor | |
| JP2999581B2 (en) | Spindle motor | |
| JPH03285559A (en) | Rotor for superconducting rotary electric machine | |
| JPS6137857B2 (en) | ||
| JPS61196762A (en) | Rotor of superconductive rotary machine | |
| JPH083171Y2 (en) | Rotating electric machine | |
| JPH083172Y2 (en) | Rotating electric machine | |
| JP2838013B2 (en) | Superconducting rotating electric machine rotor | |
| JPH04351460A (en) | Rotor of superconductive electric rotary machine | |
| JP2001008412A (en) | Rotating electric machine | |
| JP3772609B2 (en) | Fan holding structure, blower and refrigerator-freezer | |
| JPH04105547A (en) | Rotor of superconducting rotary electric apparatus | |
| JPH02219428A (en) | Claw-pole type synchronous motor | |
| JPS6310662B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
| R370 | Written measure of declining of transfer procedure |
Free format text: JAPANESE INTERMEDIATE CODE: R370 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |