JPH0810983B2 - Superconducting rotating electric machine rotor - Google Patents
Superconducting rotating electric machine rotorInfo
- Publication number
- JPH0810983B2 JPH0810983B2 JP2332180A JP33218090A JPH0810983B2 JP H0810983 B2 JPH0810983 B2 JP H0810983B2 JP 2332180 A JP2332180 A JP 2332180A JP 33218090 A JP33218090 A JP 33218090A JP H0810983 B2 JPH0810983 B2 JP H0810983B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- shaft
- key
- inner cylinder
- outer cylinder
- 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
- Superconductive Dynamoelectric Machines (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は超電導回転電機の回転子に関するものであ
る。The present invention relates to a rotor of a superconducting rotating electric machine.
〔従来の技術〕 超電導回転電機では、界磁巻線部は極低温に冷却され
るため、回転子全体が多重円筒構造のクライオスタット
構造となっている。界磁巻線を有する内筒は極低温に冷
却されるため、外筒との間に熱収縮差を生ずる。この熱
収縮差を補償するために２重軸受構造がある。これは内
筒と外筒とを別々の軸受で支持することにより、熱収縮
差を補償するものである。この構造を用いた場合、内筒
と外筒との間の真空断熱層を保つための真空保持部が必
要となる。この真空保持部として、軸方向に対し変位可
能なベローズが用いられるものがある。このベローズは
軸方向の変位に対しては強度的に非常に強いが、周方向
のねじり荷重に対しては非常に弱い。この周方向の変位
を押えるために、内筒と外筒との間でキーとキー溝とに
より接合を行い、内筒、外筒間で周方向変位差を生じな
いような構造で軸方向には変位可能な構造が考えられて
いる。[Prior Art] In a superconducting rotating electric machine, the field winding portion is cooled to an extremely low temperature, so that the entire rotor has a cryostat structure of a multi-cylinder structure. Since the inner cylinder having the field winding is cooled to an extremely low temperature, a thermal contraction difference occurs between the inner cylinder and the outer cylinder. There is a double bearing structure to compensate for this difference in heat shrinkage. This is to compensate for the difference in heat shrinkage by supporting the inner cylinder and the outer cylinder with separate bearings. When this structure is used, a vacuum holding unit for holding a vacuum heat insulating layer between the inner cylinder and the outer cylinder is required. As this vacuum holding portion, there is one that uses a bellows that is displaceable in the axial direction. This bellows is very strong against axial displacement but very weak against circumferential torsional load. In order to suppress this circumferential displacement, the inner cylinder and the outer cylinder are joined with a key and a key groove, and there is no difference in circumferential displacement between the inner cylinder and the outer cylinder in the axial direction. Is considered to be a displaceable structure.
従来、このキーとキー溝構造では第10図および第11図
に示されているように、平行キー１を、内筒を支持する
内シャフト２と外筒を支持する外シャフト３との間に設
けていた。この平行キー１では、常温での組立時におい
ても、平行キー１の周方向端面部４とキー溝間のギャッ
プを正確に調整する必要があった。なお、同図において
５はベローズである。Conventionally, in this key and key groove structure, as shown in FIGS. 10 and 11, a parallel key 1 is provided between an inner shaft 2 supporting an inner cylinder and an outer shaft 3 supporting an outer cylinder. It was provided. With this parallel key 1, it is necessary to accurately adjust the gap between the circumferential end surface portion 4 of the parallel key 1 and the key groove even when assembled at room temperature. In the figure, 5 is a bellows.
なお、これに関するものとして特開昭52−95006号公
報がある。Incidentally, there is Japanese Patent Laid-Open No. 52-95006 related to this.
上記従来技術のキーとキー溝構造では平行キーを用い
ており、常温時と低温時および回転時と非回転時にかか
わりなく、キーとキー溝間のギャップ精度が要求されて
いた。このギャップが適当でなければ、内筒を極低温に
冷却し内筒が熱収縮した場合、内、外筒間でスティック
が発生し、回転子に不要な曲げ応力が発生し、回転時の
振動発生、さらには回転子の破壊を引き起す懸念があっ
た。The above-mentioned conventional key and key groove structure uses parallel keys, and the gap accuracy between the key and the key groove is required regardless of whether it is at normal temperature or low temperature, or whether it is rotating or not. If this gap is not appropriate, if the inner cylinder is cooled to a very low temperature and the inner cylinder heat-shrinks, a stick will occur between the inner and outer cylinders, causing unnecessary bending stress in the rotor and vibration during rotation. There is a concern that it may occur and even cause the rotor to break.
本発明はこれに鑑みなされたもので、その目的とする
ところは、組立て作業性の制度をそれ程高度なものとす
る必要なくして、内筒と外筒間の周方向変位を充分防止
することができるこの種超電導回転電機の回転子を提供
するにある。The present invention has been made in view of the above, and an object thereof is to sufficiently prevent circumferential displacement between the inner cylinder and the outer cylinder without requiring the assembly workability to be so sophisticated. It is possible to provide a rotor of this kind of superconducting rotating electric machine.
すなわち本発明は、外筒と、この外筒内に真空断熱層
を介して配置された内筒とを備え、これら外筒が外シャ
フト、内筒が内シャフトを介して夫々異なる軸受で支持
され、内筒の熱収縮時にこの内筒が軸方向に変位可能に
形成されるとともに、この内筒と外筒との間に、内筒と
外筒間の周方向の変位を防止する周方向変位防止手段を
備えている超電導回転電機の回転子において、前記周方
向変位防止手段を、前記内、外シャフト間に設けられ、
かつ周方向端面部が軸方向に対してテーパー状に形成さ
れたテーパーキーおよびこのテーパーキーを所定の間隙
を介して収納するキー溝を有するテーパーキー装置で形
成するようになし、所期の目的を達成するようにしたも
のである。That is, the present invention includes an outer cylinder and an inner cylinder arranged in the outer cylinder via a vacuum heat insulating layer, the outer cylinder being supported by the outer shaft and the inner cylinder being supported by different bearings via the inner shaft. A circumferential displacement that prevents the inner cylinder and the outer cylinder from being displaced in the circumferential direction between the inner cylinder and the outer cylinder while the inner cylinder is formed to be axially displaceable when the inner cylinder is thermally contracted. In a rotor of a superconducting electric rotating machine comprising a prevention means, the circumferential displacement prevention means is provided between the inner and outer shafts,
In addition, the circumferential end surface portion is formed by a taper key having a taper shape in the axial direction and a taper key device having a key groove for accommodating the taper key through a predetermined gap. Is achieved.
また、本発明は周方向変位防止手段を、内シャフトを
軸方向端部へ向かうに従い太くなるテーパー状に形成
し、外シャフトをこの内シャフトと同一テーパー状の内
壁面を有し、かつ内シャフトと所定の間隙を有して対向
配置されるように形成すると共に、この間隙を、内シャ
フトの軸方向熱収縮時に内シャフトの外壁面と外シャフ
トの内壁面が静合するように形成し、内外シャフトの静
合摩擦で内外シャフト間の周方向の変位を防止するよう
に形成したものである。Further, according to the present invention, the circumferential displacement preventing means is formed such that the inner shaft has a taper shape that becomes thicker toward the axial end, and the outer shaft has an inner wall surface that is the same taper shape as the inner shaft, and Is formed so as to be opposed to each other with a predetermined gap, and this gap is formed so that the outer wall surface of the inner shaft and the inner wall surface of the outer shaft are brought into static contact with each other when the inner shaft is thermally contracted in the axial direction. It is formed to prevent circumferential displacement between the inner and outer shafts by static friction between the inner and outer shafts.
また、周方向変位防止手段を、内シャフトの端部に歯
車リングを設け、かつ外シャフトの端部に前記歯車リグ
と所定の間隙を介して対向配置するとともに、この間隙
を、内シャフトの軸方向熱収縮時に内シャフトの歯車と
外シャフトの歯車が噛み合うように形成し、内外シャフ
トにそれぞれ設けられている歯車の噛み合いで内外シャ
フト間の周方向の変位を防止するように形成したもので
ある。Further, the circumferential displacement prevention means is provided with a gear ring at the end portion of the inner shaft, and is arranged at the end portion of the outer shaft so as to face the gear rig with a predetermined gap, and this gap is provided to the shaft of the inner shaft. It is formed so that the gears of the inner shaft and the gears of the outer shaft mesh with each other during directional thermal contraction, and the gears provided on the inner and outer shafts mesh with each other to prevent circumferential displacement between the inner and outer shafts. .
また、周方向変位防止手段を、内、外シャフト間に軸
方向に伸びて設けられ、かつ外シャフト側が先細のテー
パー状に形成されたテーパーキーおよび内、外シャフト
にそれぞれ設けられ、前記テーパーキーを所定の間隙を
介して収納するキー溝とで形成したものである。Further, the circumferential displacement prevention means is provided between the inner and outer shafts in the axial direction and has a taper key formed on the outer shaft side in a tapered shape and on the inner and outer shafts, respectively. Is formed with a key groove for accommodating it through a predetermined gap.
また、周方向変位防止手段を、内、外シャフト間に軸
方向に伸びて設けられたキーおよび内、外シャフトにそ
れぞれ設けられ、前記キーを所定の間隙を介して収納す
るキー溝および前記内シャフトに設けられ、かつ周方向
変位の拘束時に前記キー近辺の内シャフトを加熱し、前
記内シャフトを加熱膨張させる加熱装置で形成し、前記
内シャフトの加熱膨張で内、外シャフトが合体するよう
にしたものである。Further, the circumferential displacement preventing means is provided on the key extending in the axial direction between the inner and outer shafts and the key groove and the inner groove provided on the inner and outer shafts, respectively, for accommodating the key with a predetermined gap. Formed by a heating device that is provided on the shaft and heats and expands the inner shaft near the key when restraining the displacement in the circumferential direction, so that the inner shaft and the outer shaft are united by the heat expansion of the inner shaft. It is the one.
また、周方向変位防止手段を、内、外シャフト間に軸
方向に伸びて設けられたキーおよび内、外シャフトにそ
れぞれ設けられ、前記キーを所定の間隙を介して収納す
るキー溝および前記外シャフトに設けられ、かつ周方向
変位の拘束時に前記キー近辺の外シャフトを冷却し、前
記外シャフトを冷却収縮させる冷却装置で形成し、前記
外シャフトの冷却収縮で内、外シャフトが合体するよう
にしたものである。Further, the circumferential displacement prevention means is provided on the key extending in the axial direction between the inner and outer shafts and the key groove and the outer groove respectively provided on the inner and outer shafts for accommodating the key with a predetermined gap. A cooling device that is provided on the shaft and cools the outer shaft in the vicinity of the key when the displacement in the circumferential direction is constrained and cools and shrinks the outer shaft is formed so that the inner and outer shafts are united by the cooling shrinkage of the outer shaft. It is the one.
上記手段を設けたので、テーパーキーを所定の間隙を
介してキー溝に収納すればよくなって、従来のように組
立作業性の精度を要しなくなる。Since the above-mentioned means is provided, it is sufficient to store the tapered key in the key groove with a predetermined gap, and the precision of the assembling workability as in the conventional case is not required.
以下、図示した実施例に基づいて本発明を説明する。
第１図から第３図には本発明の一実施例が示されてい
る。なお、従来と同じ部品には同じ符号を付したので説
明を省略する。同図に示されているように超電導発電機
の回転子は、常温ダンパ（外筒）６、輻射シールド７、
巻線取付軸（内筒）８から構成される多重円筒構造をし
ている。巻線取付軸８には超電導コイルを構成するため
に液体ヘリウム温度まで冷却されるため、巻線取付軸８
は熱収縮する。タービン側においては、常温ダンパ６お
よび巻線取付軸８を支持するトルクチューブ９は共に１
つのタービン側シャフト10に接続されているが、反ター
ビン側においては、極低温時の巻線取付軸８の熱収縮を
補償するために、常温ダンパ６と巻線取付軸８とを夫々
外シャフト３、内シャフト２で別々に支持し、軸受も夫
々別々に設ける２重軸受構造である。回転子内部には、
極低温に保ための真空断熱層11が設けられている。この
ように構成された超電導発電機の回転子で本実施例では
周方向変位防止手段を、内、外シャフト２、３間に設け
られ、かつ周方向端面部４を軸方向に対してテーパー状
に形成したテーパーキー1aおよびこのテーパーキー1aを
所定の間隙を介して収納するキー溝（図示せず）を有す
るテーパーキー装置で構成した。このようにすることに
よりテーパーキー1aを所定の間隙を介してキー溝に収納
すればよくなって、従来のように組立作業性の精度を要
しなくなり、内筒、外筒間の周方向変位の防止を容易に
することを可能とした超電導回転電機の回転子を得るこ
とができる。Hereinafter, the present invention will be described based on the illustrated embodiments.
1 to 3 show an embodiment of the present invention. Since the same parts as those of the conventional one are designated by the same reference numerals, the description thereof is omitted. As shown in the figure, the rotor of the superconducting generator includes a room temperature damper (outer cylinder) 6, a radiation shield 7,
The winding mounting shaft (inner cylinder) 8 has a multiple cylindrical structure. Since the winding mounting shaft 8 is cooled to the liquid helium temperature in order to form a superconducting coil, the winding mounting shaft 8
Heat shrinks. On the turbine side, both the room temperature damper 6 and the torque tube 9 supporting the winding mounting shaft 8 are 1
Although connected to two turbine-side shafts 10, on the anti-turbine side, in order to compensate for thermal contraction of the winding mounting shaft 8 at extremely low temperatures, the room temperature damper 6 and the winding mounting shaft 8 are respectively provided as outer shafts. 3, a double bearing structure in which the inner shaft 2 is separately supported, and the bearings are also separately provided. Inside the rotor,
A vacuum heat insulating layer 11 is provided to keep the temperature extremely low. In the rotor of the superconducting generator configured as described above, in the present embodiment, the circumferential displacement prevention means is provided between the inner and outer shafts 2 and 3, and the circumferential end surface portion 4 is tapered in the axial direction. The taper key 1a is formed by a taper key device having a key groove (not shown) for accommodating the taper key 1a through a predetermined gap. By doing so, it is only necessary to store the tapered key 1a in the key groove through a predetermined gap, which does not require the accuracy of assembly workability as in the conventional case, and the circumferential displacement between the inner cylinder and the outer cylinder is eliminated. It is possible to obtain a rotor of a superconducting rotating electric machine that can easily prevent the above.
すなわち真空保持機構として使用しているベローズ５
の周方向（ねじり方向）変位拘束手段のキー構造とし
て、周方向端面部４をテーパー形状にし、それに対応す
るキー溝構造を熱収縮発生時にテーパーキー1aとリジッ
トに結合するような構造とする。このようなテーパーキ
ー1aにより、極低温時にはテーパーキー1aがくさびの役
目をして周方向変位を拘束することが可能となり、ま
た、常温時にはテーパーキー1aとキー溝間にギャップが
存在し得るので、作業性が改善される。That is, the bellows 5 used as a vacuum holding mechanism.
As the key structure of the circumferential (twisting direction) displacement restraint means, the circumferential end surface portion 4 has a taper shape, and a key groove structure corresponding to the key structure is coupled to the taper key 1a and the rigid when heat contraction occurs. With such a taper key 1a, it becomes possible for the taper key 1a to function as a wedge to restrain the circumferential displacement at an extremely low temperature, and a gap may exist between the taper key 1a and the key groove at a normal temperature. , Workability is improved.
このように本実施例によれば、２重軸受構造の内シャ
フト、外シャフト間の極低温時に発生する相対変位を効
果的に拘束することができ、また組立作業性が改善され
る。As described above, according to this embodiment, it is possible to effectively restrain the relative displacement between the inner shaft and the outer shaft of the double bearing structure, which occurs at an extremely low temperature, and the assembling workability is improved.
第４図には本発明の他の実施例が示されている。本実
施例は周方向変位防止手段を、内、外シャフトがテーパ
ー状に形成され、かつ所定の間隙を介して対向配置され
たテーパー付内シャフト12とテーパー付外シャフト13と
で構成した。このようにすることにより、テーパー付内
シャフト12に熱収縮が作用した場合、テーパー付内シャ
フト12は巻線取付軸側に移動して回転するようになって
テーパー付内シャフト12とテーパー付外シャフト13とが
接触し、テーパー角を調整しておけばその間に周方向変
位拘束に必要な面圧を発生させることができるようにな
って、前述の場合と同様な作用効果を奏することができ
る。FIG. 4 shows another embodiment of the present invention. In this embodiment, the circumferential displacement preventing means is composed of a tapered inner shaft 12 and a tapered outer shaft 13 in which the inner and outer shafts are formed in a tapered shape and are opposed to each other with a predetermined gap. By doing so, when thermal contraction acts on the tapered inner shaft 12, the tapered inner shaft 12 moves to the winding mounting shaft side and rotates, so that the tapered inner shaft 12 and the tapered outer shaft 12 are rotated. By contacting the shaft 13 and adjusting the taper angle, it becomes possible to generate the surface pressure required for restraining the displacement in the circumferential direction therebetween, and it is possible to achieve the same effect as the above case. .
第５図には本発明の更に他の実施例が示されている。
本実施例は周方向変位防止手段を、内シャフト２の端部
に設けられた歯車リング14と、この歯車リング14と所定
の間隙を介して対向配置されると共に、外シャフト３の
端部に設けられ、かつ歯車リング14と内シャフト２の収
縮時に噛み合う歯車15とで構成した。すなわち内シャフ
ト２に歯車リング14を外シャフト３の端部と接する部分
に装着し、一方外シャフト３の端部にも歯車15を加工し
ておく。常温時、外シャフト３の歯車15、内シャフト２
の歯車リング14との間にはギャップを介して装着してお
き、ねじりが問題となる極低温時には両者の歯車がリジ
ットに噛み合い、トルク伝達が可能な構造とした。この
ようにすることにより、内筒、外筒間に周方向変位は発
生しなくなって、前述の場合と同様な作用効果を奏する
ことができる。FIG. 5 shows still another embodiment of the present invention.
In the present embodiment, the circumferential displacement preventing means is arranged at the end of the outer shaft 3 while being arranged to face the gear ring 14 provided at the end of the inner shaft 2 and the gear ring 14 with a predetermined gap. It is provided with a gear ring 14 and a gear 15 that meshes when the inner shaft 2 contracts. That is, the gear ring 14 is attached to the inner shaft 2 at a portion in contact with the end portion of the outer shaft 3, and the gear 15 is also machined at the end portion of the outer shaft 3. Gears 15 of the outer shaft 3 and the inner shaft 2 at room temperature
The gear ring 14 is attached to the gear ring 14 through a gap so that the gears of both gears mesh with the rigid at the time of extremely low temperature where torsion is a problem, and torque can be transmitted. By doing so, the circumferential displacement does not occur between the inner cylinder and the outer cylinder, and it is possible to achieve the same effect as the above case.
第６図及び第７図には本発明の更に他の実施例が示さ
れている。本実施例は周方向変位防止手段を、内、外シ
ャフト２、３間に設けられ、かつ遠心荷重発生時に内、
外シャフト２、３間の変位を拘束するくさび型キー16で
形成した。すなわち遠心方向に移動可能なくさび型キー
16を内シャフト２、外シャフト３間に装着し、その形状
として遠心力作用時にテーパー部によるくさびが作用す
るように、遠心方向に細くなったくさび型キー16を使用
する。このようにすることにより、静止した組立時には
周方向変位が拘束されず、回転時のみ周方向変位拘束が
可能となって、前述の場合と同様な作用効果を奏するこ
とができる。6 and 7 show another embodiment of the present invention. In the present embodiment, the circumferential displacement prevention means is provided between the inner and outer shafts 2 and 3, and when the centrifugal load is generated,
It is formed by a wedge-shaped key 16 that restrains the displacement between the outer shafts 2 and 3. That is, a wedge key that can be moved in the centrifugal direction
16 is mounted between the inner shaft 2 and the outer shaft 3, and as a shape thereof, a wedge-shaped key 16 is used which is thin in the centrifugal direction so that a wedge due to a taper portion acts when centrifugal force acts. By doing so, the circumferential displacement is not constrained during stationary assembly, and the circumferential displacement can be constrained only during rotation, so that the same operational effect as in the above case can be obtained.
第８図には本発明の更に他の実施例が示されている。
本実施例は周方向変位防止手段を、内、外シャフト２、
３間にキー溝（図示せず）と所定間隙を持って設けられ
たキー1bと、内シャフト２に設けられた加熱装置17とで
構成した。すなわち内シャフト２に加熱装置17を装着
し、周方向変位の拘束を行いたい時点で内シャフト２を
加熱し、装着されたキー1bを温め熱膨張させ、内、外シ
ャフト２、３をリジットに固定する。このようにするこ
とにより周方向の変位が防止されるようになって、前述
の場合と同様な作用効果を奏することができる。FIG. 8 shows still another embodiment of the present invention.
In this embodiment, the circumferential displacement prevention means is provided with inner and outer shafts 2,
It is composed of a key 1b provided with a key groove (not shown) and a predetermined gap between them, and a heating device 17 provided on the inner shaft 2. That is, the heating device 17 is attached to the inner shaft 2, and the inner shaft 2 is heated at the time when it is desired to restrain the circumferential displacement, and the attached key 1b is warmed and thermally expanded to make the inner and outer shafts 2 and 3 rigid. Fix it. By doing so, displacement in the circumferential direction can be prevented, and the same effect as the above case can be obtained.
この場合、キー1bの材料としては熱膨張率がシャフト
材に対して大きいものを使用するのが望ましい。In this case, it is desirable to use a material having a coefficient of thermal expansion larger than that of the shaft material as the material of the key 1b.
また、内、外シャフト２、３間にキー1bを使用せず、
前述のように内、外シャフト２、３の面圧により周方向
の変位を拘束する場合には、内シャフト２の材料として
外シャフト３より熱膨張率の大きいものを使用するのが
望ましい。Also, without using the key 1b between the inner and outer shafts 2, 3,
As described above, when the circumferential displacement is restricted by the surface pressure of the inner and outer shafts 2 and 3, it is desirable to use a material having a coefficient of thermal expansion larger than that of the outer shaft 3 as the material of the inner shaft 2.
第９図には本発明の更に他の実施例が示されている。
本実施例は周方向変位防止手段を、内、外シャフト２、
３間にキー溝（図示せず）と所定間隙を持って設けられ
たキー1bと、外シャフト３に設けられた冷却装置18とで
構成した。すなわち外シャフト３に冷却装置18を設け、
周方向の変位拘束を行いたい時点で外シャフト３を冷却
し、外シャフト自体を収縮させ、キー1bとリジットに合
体するような構造とする。このようにすることにより周
方向の変位が防止されるようになって、前述の場合と同
様な作用効果を奏することができる。FIG. 9 shows still another embodiment of the present invention.
In this embodiment, the circumferential displacement prevention means is provided with inner and outer shafts 2,
It comprises a key 1b provided with a key groove (not shown) between the three and a predetermined gap, and a cooling device 18 provided on the outer shaft 3. That is, a cooling device 18 is provided on the outer shaft 3,
The outer shaft 3 is cooled at the time when it is desired to constrain the displacement in the circumferential direction, and the outer shaft itself is contracted so that the key 1b and the rigid member are combined. By doing so, displacement in the circumferential direction can be prevented, and the same effect as the above case can be obtained.
この場合、キー1bの材料としてはシャフト材に対して
熱収縮率が小さいものを使用するのが望ましい。In this case, it is desirable to use a material having a small heat shrinkage ratio with respect to the shaft material as the material of the key 1b.
また、キー1bを使用せず前述のように内、外シャフト
２、３の面圧により周方向変位拘束する場合には、外シ
ャフト３の材料として内シャフト２より熱収縮率の大き
いものを使用するのが望ましい。When the circumferential displacement is restricted by the surface pressure of the inner and outer shafts 2 and 3 without using the key 1b, the outer shaft 3 is made of a material having a heat shrinkage ratio higher than that of the inner shaft 2. It is desirable to do.
以上説明してきたように、本発明によれば、組立て作
業性の制度をそれ程高度なものとする必要なくして、内
筒と外筒間の周方向変位を充分防止することができるこ
の種超電導回転電機の回転子を得ることができる。As described above, according to the present invention, the superconducting rotation of this kind can sufficiently prevent the circumferential displacement between the inner cylinder and the outer cylinder without requiring the assembly workability to be so sophisticated. The rotor of the electric machine can be obtained.
第１図は本発明の超電導回転電機の回転子の一実施例の
縦断側面図、第２図は第１図のＰ矢視図、第３図は第２
図のＱ方向から見た内シャフト周りの正面図、第４図か
ら第６図は本発明の超電導回転電機の回転子の夫々異な
る実施例を示す回転子要部の縦断側面図、第７図は第６
図のくさび型キー周りを示す正面図、第８図および第９
図は本発明の超電導回転電機の回転子の夫々異なる実施
例を示す回転子要部の縦断側面図、第10図は従来の超電
導回転電機の回転子の回転子要部の縦断側面図、第11図
は第10図のＲ方向から見た内シャフト周りの正面図であ
る。 1a……テーパーキー、1b……キー、２……内シャフト、
３……外シャフト、６……常温ダンパ（外筒）、８……
巻線取付軸（内筒）、11……断熱真空層、12……テーパ
ー付内シャフト、13……テーパー付外シャフト、14……
歯車リング、15……歯車、16……くさび型キー、17……
加熱装置、18……冷却装置。FIG. 1 is a vertical sectional side view of an embodiment of a rotor of a superconducting rotating electric machine of the present invention, FIG. 2 is a view taken in the direction of arrow P of FIG. 1, and FIG.
A front view around the inner shaft as seen from the Q direction in the figure, FIGS. 4 to 6 are longitudinal side views of essential parts of the rotor showing different embodiments of the rotor of the superconducting electric rotating machine of the present invention, and FIG. Is the sixth
Front view showing around the wedge-shaped key in the figure, FIG. 8 and FIG.
FIG. 10 is a vertical sectional side view of a rotor main part showing different embodiments of the rotor of the superconducting rotary electric machine of the present invention, and FIG. 10 is a vertical side view of a rotor main part of a rotor of a conventional superconducting rotary electric machine. FIG. 11 is a front view around the inner shaft as seen from the R direction in FIG. 1a ... taper key, 1b ... key, 2 ... inner shaft,
3 ... Outer shaft, 6 ... Room temperature damper (outer cylinder), 8 ...
Winding mounting shaft (inner cylinder), 11 ... Adiabatic vacuum layer, 12 ... Tapered inner shaft, 13 ... Tapered outer shaft, 14 ...
Gear ring, 15 …… gear, 16 …… wedge key, 17 ……
Heating device, 18 ... Cooling device.
Claims (5)
配置された内筒とを備え、これら外筒が外シャフト、内
筒が内シャフトを介して夫々異なる軸受で支持され、内
筒の熱収縮時にこの内筒が軸方向に変位可能に形成され
るとともに、この内筒と外筒との間に、内筒と外筒間の
周方向の変位を防止する周方向変位防止手段を備えてい
る超電導回転電機の回転子において、 前記周方向変位防止手段を、 前記内、外シャフト間に設けられ、かつ周方向端面部が
軸方向に対してテーパー状に形成されたテーパーキーお
よびこのテーパーキーを所定の間隙を介して収納するキ
ー溝を有するテーパーキー装置で形成したことを特徴と
する超電導回転電機の回転子。1. An outer cylinder and an inner cylinder arranged inside the outer cylinder via a vacuum heat insulating layer, the outer cylinder being supported by an outer shaft and the inner cylinder being supported by different bearings via the inner shaft. A circumferential displacement that prevents the inner cylinder and the outer cylinder from being displaced in the circumferential direction between the inner cylinder and the outer cylinder while the inner cylinder is formed to be axially displaceable when the inner cylinder is thermally contracted. A rotor of a superconducting rotating electric machine comprising a prevention means, wherein the circumferential displacement prevention means is provided between the inner and outer shafts, and has a circumferential end face formed in a taper shape in the axial direction. A rotor for a superconducting rotating electric machine, comprising a key and a taper key device having a key groove for accommodating the taper key with a predetermined gap.
配置された内筒とを備え、これら外筒が外シャフト、内
筒が内シャフトを介して夫々異なる軸受で支持され、内
筒の熱収縮時にこの内筒が軸方向に変位可能に形成され
るとともに、この内筒と外筒との間に、内筒と外筒間の
周方向の変位を防止する周方向変位防止手段を備えてい
る超電導回転電機の回転子において、 前記周方向変位防止手段を、 前記内シャフトの端部に歯車リングを設け、かつ 前記外シャフトの端部に前記歯車リングと所定の間隙を
介して対向配置するとともに、 この間隙を、内シャフトの軸方向熱収縮時に内シャフト
の歯車と外シャフトの歯車が噛み合うように形成し、 内外シャフトにそれぞれ設けられている歯車の噛み合い
で内外シャフト間の周方向の変位を防止するように形成
したことを特徴とする超電導回転電機の回転子。2. An outer cylinder and an inner cylinder arranged inside the outer cylinder via a vacuum heat insulation layer, the outer cylinder being supported by an outer shaft and the inner cylinder being supported by different bearings via the inner shaft. A circumferential displacement that prevents the inner cylinder and the outer cylinder from being displaced in the circumferential direction between the inner cylinder and the outer cylinder while the inner cylinder is formed to be axially displaceable when the inner cylinder is thermally contracted. In a rotor of a superconducting rotating electric machine comprising a prevention unit, the circumferential displacement prevention unit is provided with a gear ring at an end of the inner shaft, and a predetermined gap is provided between the gear ring and an end of the outer shaft. The gears of the inner shaft and the gear of the outer shaft mesh with each other when the inner shaft is thermally contracted in the axial direction, and the gears of the inner and outer shafts mesh with each other to form a gap between the inner and outer shafts. The circumferential displacement of The rotor of the superconducting rotating electrical machine, characterized in that it has formed to stop.
配置された内筒とを備え、これら外筒が外シャフト、内
筒が内シャフトを介して夫々異なる軸受で支持され、内
筒の熱収縮時にこの内筒が軸方向に変位可能に形成され
るとともに、この内筒と外筒との間に、内筒と外筒間の
周方向の変位を防止する周方向変位防止手段を備えてい
る超電導回転電機の回転子において、 前記周方向変位防止手段を、 前記内、外シャフト間に軸方向に伸びて設けられ、かつ
外シャフト側が先細のテーパー状に形成されたテーパー
キーおよび内、外シャフトにそれぞれ設けられ、前記テ
ーパーキーを所定の間隙を介して収納するキー溝とで形
成したことを特徴とする超電導回転電機の回転子。3. An outer cylinder and an inner cylinder arranged inside the outer cylinder via a vacuum heat insulation layer, the outer cylinder being supported by an outer shaft and the inner cylinder being supported by different bearings via the inner shaft. A circumferential displacement that prevents the inner cylinder and the outer cylinder from being displaced in the circumferential direction between the inner cylinder and the outer cylinder while the inner cylinder is formed to be axially displaceable when the inner cylinder is thermally contracted. A rotor of a superconducting rotating electric machine comprising a prevention means, wherein the circumferential displacement prevention means is provided so as to extend in the axial direction between the inner and outer shafts, and the outer shaft side is formed into a tapered taper shape. A rotor for a superconducting rotating electric machine, comprising: a key and a key groove that is provided on each of the inner and outer shafts and accommodates the tapered key through a predetermined gap.
配置された内筒とを備え、これら外筒が外シャフト、内
筒が内シャフトを介して夫々異なる軸受で支持され、内
筒の熱収縮時にこの内筒が軸方向に変位可能に形成され
るとともに、この内筒と外筒との間に、内筒と外筒間の
周方向の変位を防止する周方向変位防止手段を備えてい
る超電導回転電機の回転子において、 前記周方向変位防止手段を、 前記内、外シャフト間に軸方向に伸びて設けられたキー
および内、外シャフトにそれぞれ設けられ、前記キーを
所定の間隙を介して収納するキー溝および前記内シャフ
トに設けられ、かつ周方向変位の拘束時に前記キー近辺
の内シャフトを加熱し、前記内シャフトを加熱膨張させ
る加熱装置で形成し、前記内シャフトの加熱膨張で内、
外シャフトが合体するようにしたことを特徴とする超電
導回転電機の回転子。4. An outer cylinder, and an inner cylinder arranged inside the outer cylinder via a vacuum heat insulating layer, the outer cylinder being supported by different bearings, and the inner cylinder being supported by different bearings via the inner shaft. A circumferential displacement that prevents the inner cylinder and the outer cylinder from being displaced in the circumferential direction between the inner cylinder and the outer cylinder while the inner cylinder is formed to be axially displaceable when the inner cylinder is thermally contracted. In a rotor of a superconducting rotating electric machine comprising a prevention means, the circumferential displacement prevention means is provided with a key extending in the axial direction between the inner and outer shafts, and a key provided on the inner and outer shafts, respectively. Is provided in the key groove and the inner shaft for accommodating through a predetermined gap, and is formed by a heating device that heats the inner shaft in the vicinity of the key when restraining the displacement in the circumferential direction and heats and expands the inner shaft, By heat expansion of the inner shaft,
A rotor for a superconducting rotating electric machine, wherein an outer shaft is united.
配置された内筒とを備え、これら外筒が外シャフト、内
筒が内シャフトを介して夫々異なる軸受で支持され、内
筒の熱収縮時にこの内筒が軸方向に変位可能に形成され
るとともに、この内筒と外筒との間に、内筒と外筒間の
周方向の変位を防止する周方向変位防止手段を備えてい
る超電導回転電機の回転子において、 前記周方向変位防止手段を、 前記内、外シャフト間に軸方向に伸びて設けられたキー
および内、外シャフトにそれぞれ設けられ、前記キーを
所定の間隙を介して収納するキー溝および前記外シャフ
トに設けられ、かつ周方向変位の拘束時に前記キー近辺
の外シャフトを冷却し、前記外シャフトを冷却収縮させ
る冷却装置で形成し、前記外シャフトの冷却収縮で内、
外シャフトが合体するようにしたたことを特徴とする超
電導回転電機の回転子。5. An outer cylinder and an inner cylinder arranged inside the outer cylinder via a vacuum heat insulation layer, the outer cylinder being supported by an outer shaft and the inner cylinder being supported by different bearings via the inner shaft. A circumferential displacement that prevents the inner cylinder and the outer cylinder from being displaced in the circumferential direction between the inner cylinder and the outer cylinder while the inner cylinder is formed to be axially displaceable when the inner cylinder is thermally contracted. In a rotor of a superconducting rotating electric machine comprising a prevention means, the circumferential displacement prevention means is provided with a key extending in the axial direction between the inner and outer shafts, and a key provided on the inner and outer shafts, respectively. Is provided in the key groove and the outer shaft for accommodating through a predetermined gap, and is formed by a cooling device that cools the outer shaft in the vicinity of the key when restraining the displacement in the circumferential direction and cools and shrinks the outer shaft, Inner due to cooling shrinkage of the outer shaft,
A rotor for a superconducting rotating electric machine, characterized in that an outer shaft is united.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332180A JPH0810983B2 (en) | 1990-11-29 | 1990-11-29 | Superconducting rotating electric machine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332180A JPH0810983B2 (en) | 1990-11-29 | 1990-11-29 | Superconducting rotating electric machine rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04200263A JPH04200263A (en) | 1992-07-21 |
| JPH0810983B2 true JPH0810983B2 (en) | 1996-01-31 |
Family
ID=18252063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2332180A Expired - Fee Related JPH0810983B2 (en) | 1990-11-29 | 1990-11-29 | Superconducting rotating electric machine rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0810983B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140063202A (en) * | 2012-11-16 | 2014-05-27 | 현대자동차주식회사 | Rotor shaft of drive motor having partially stationary fit type keyway and rotor core assembly using the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10063724A1 (en) * | 2000-12-20 | 2002-07-11 | Siemens Ag | Machine with a superconducting winding arranged in a winding support and with means for axial expansion compensation of the winding support |
| JP2004301930A (en) | 2003-03-28 | 2004-10-28 | Fujitsu Ltd | Fixing unit, heat fixing roller, recording device having it, and method for production of it |
| JP6024539B2 (en) * | 2013-03-15 | 2016-11-16 | アイシン精機株式会社 | Superconducting rotating machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5171089A (en) * | 1974-12-17 | 1976-06-19 | Mitsubishi Electric Corp | Dannetsukaitenyoki |
-
1990
- 1990-11-29 JP JP2332180A patent/JPH0810983B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140063202A (en) * | 2012-11-16 | 2014-05-27 | 현대자동차주식회사 | Rotor shaft of drive motor having partially stationary fit type keyway and rotor core assembly using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04200263A (en) | 1992-07-21 |
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