JPH0546780B2 - - Google Patents
Info
- Publication number
- JPH0546780B2 JPH0546780B2 JP57115460A JP11546082A JPH0546780B2 JP H0546780 B2 JPH0546780 B2 JP H0546780B2 JP 57115460 A JP57115460 A JP 57115460A JP 11546082 A JP11546082 A JP 11546082A JP H0546780 B2 JPH0546780 B2 JP H0546780B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- magnetic fluid
- refrigerant
- exhaust hole
- superconducting
- 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 - Lifetime
Links
- 239000003507 refrigerant Substances 0.000 claims description 32
- 239000011553 magnetic fluid Substances 0.000 claims description 13
- 239000007791 liquid phase Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
- H02K55/02—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type
- H02K55/04—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type with rotating field windings
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は超電導回転電機の真空排気装置に係
り、特に超電導界磁コイルを囲む断熱真空室の真
空排気構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a vacuum evacuation device for a superconducting rotating electrical machine, and particularly to a vacuum evacuation structure for an adiabatic vacuum chamber surrounding a superconducting field coil.
第１図は超電導回転電機の回転子であつて、回
転子１は回転軸２を軸受３で支承し、トルクチユ
ーブ４には液体ヘリウムが満たされた極低温の液
相冷媒室５内に超電導界磁コイル６を装着し外方
の常温ダンパ７との間およびトルクチユーブ４の
内部は真空室８を形成している。冷媒給排装置９
は２重管構造の両管端面間を塞いだ円筒状の固定
配管１０を固定筒状部材１１に固定し、固定配管
１０の端部に、端部が２重管構造で途中から３重
管構造をした円筒状の回転配管１２の端部が遊嵌
され、回転配管１２は回転軸２内に同心状に取付
けられている。固定筒状部材１１の内側には、回
転配管１２の外周面をシールする３個の磁性流体
シール１３が設けてある。
Fig. 1 shows a rotor of a superconducting rotating electrical machine, in which the rotor 1 supports a rotating shaft 2 with a bearing 3, and a torque tube 4 has superconducting conductors in a cryogenic liquid phase refrigerant chamber 5 filled with liquid helium. A vacuum chamber 8 is formed between the field coil 6 and the outside room-temperature damper 7 and the inside of the torque tube 4 . Refrigerant supply and discharge device 9
A cylindrical fixed pipe 10 with a double-pipe structure that closes the end faces of both pipes is fixed to a fixed cylindrical member 11, and a triple-pipe pipe with a double-pipe structure at the end is attached to the end of the fixed pipe 10. The end portion of a structured cylindrical rotary pipe 12 is loosely fitted, and the rotary pipe 12 is installed concentrically within the rotating shaft 2. Three magnetic fluid seals 13 are provided inside the fixed cylindrical member 11 to seal the outer peripheral surface of the rotary pipe 12.
液相ヘリウムは液相冷媒路１４から固定配管１
０、回転配管１２を通り液相冷媒室５に入り、冷
媒排出通路１５を通り気相冷媒路１６に出て液相
冷媒室５内の超電導界磁コイル６を冷却してい
る。超電導磁界コイル６は約−270℃の液体ヘリ
ウムで冷却されるため、断熱が重要であり真空室
８で囲んでいる。しかして超電導回転子１を大容
量タービン発電機に適用した場合はベースロード
の発電機となるため、最低６か月乃至１年の連続
運転が必要であり、その間の真空の低下は絶対に
避けなければならない。 Liquid phase helium is transferred from the liquid phase refrigerant path 14 to the fixed pipe 1.
0, enters the liquid-phase refrigerant chamber 5 through the rotating pipe 12, exits through the refrigerant discharge passage 15 to the gas-phase refrigerant path 16, and cools the superconducting field coil 6 in the liquid-phase refrigerant chamber 5. Since the superconducting magnetic field coil 6 is cooled with liquid helium at approximately -270°C, heat insulation is important, so it is surrounded by a vacuum chamber 8. However, when the superconducting rotor 1 is applied to a large-capacity turbine generator, it becomes a base load generator, so continuous operation for at least 6 months to 1 year is required, and a drop in vacuum during that time is absolutely avoided. There must be.
しかしながら、従来の真空システムは運転前に
真空引きして封じ切つておくのが一般であるの
で、万一シール部の溶接やＯリングなどの気密構
造部からリークすると運転が不能となる欠点があ
つた。
However, since conventional vacuum systems are generally evacuated and sealed before operation, there is a drawback that if a leak occurs from an airtight structure such as a welded seal or an O-ring, operation becomes impossible. Ta.
本発明は上記欠点に鑑みなされたもので、運転
中でも真空引きのできるようにした超電導回転電
機の真空排気装置を提供することを目的とする。
The present invention was made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a vacuum evacuation device for a superconducting rotating electric machine that can perform evacuation even during operation.
すなわち、冷媒給排装置内に真空室に連通する
真空排気シールを設けることによつて、超電導回
転電機の運転中においても真空排気シールを通し
て真空引きすることができるようにしたものであ
る。
That is, by providing an evacuation seal communicating with the vacuum chamber in the refrigerant supply/discharge device, it is possible to perform evacuation through the evacuation seal even while the superconducting rotating electric machine is in operation.
以下本発明を図面に示す一実施例について説明
する。第２図は第１図の左端の冷媒給排装置９に
冷媒給排機能のほかに真空排気機能を持たせたも
のである。回転子１は同じなので説明は省略す
る。回転軸２から延長する中空軸１８は中空部に
冷媒供給管１９を設置し、冷媒供給管１９は断熱
のために先端を盲栓２０でふさいだ真空層２１を
有する外管１９ｂと、液相冷媒を供給する内管１
９ａとの２重管になつている。真空層２１は回転
子内部の冷媒供給管１９の右端部が前述の盲栓２
０を配設してないため、第１図の真空室８に連通
している。冷媒供給管１９の左端部近傍には磁性
流体シールの磁気回路を構成するための磁気を通
す金属スリーブ２２を冷媒供給管１９の外管１９
ｂの一部分に気密接合し、金属スリーブ２２にお
ける磁性流体シール面の間に設けた真空排気孔２
３を真空層２１に外管１９ｂを介して連通してい
る。真空排気孔２３の位置には固定筒状部材１１
の内側に形成された磁性流体シール２４に設けた
排気孔２５を経由して外部の真空ポンプ２６によ
つて真空層２１に連通する第１図の真空室８の真
空引きを行う。２７は中空軸１８を固定筒状部材
１１に対し位置決め支承する案内軸受、２８は２
個の磁性流体シール２４と１３および中空軸１８
と固定筒状部材１１で構成される空間の冷媒排気
セクシヨンで気相冷媒路１６に連通している。こ
こで、磁性流体シール２４と冷媒供給管１９と、
金属スリーブ２２と真空排気孔２３、排気孔２５
と、真空ポンプ２６とを総称して真空排気シール
とする。
An embodiment of the present invention shown in the drawings will be described below. In FIG. 2, the refrigerant supply/discharge device 9 at the left end of FIG. 1 is provided with a vacuum exhaust function in addition to the refrigerant supply/discharge function. Since the rotor 1 is the same, the explanation will be omitted. A refrigerant supply pipe 19 is installed in the hollow part of the hollow shaft 18 extending from the rotating shaft 2. Inner pipe 1 that supplies refrigerant
It is a double pipe with 9a. The vacuum layer 21 is formed by connecting the right end of the refrigerant supply pipe 19 inside the rotor to the aforementioned blind plug 2.
0 is not provided, it communicates with the vacuum chamber 8 in FIG. Near the left end of the refrigerant supply pipe 19, a metal sleeve 22 through which magnetism passes for forming a magnetic circuit of a magnetic fluid seal is installed on the outer pipe 19 of the refrigerant supply pipe 19.
A vacuum exhaust hole 2 is airtightly fitted to a part of b and provided between the magnetic fluid sealing surfaces of the metal sleeve 22.
3 is communicated with the vacuum layer 21 via the outer tube 19b. A fixed cylindrical member 11 is located at the position of the vacuum exhaust hole 23.
The vacuum chamber 8 in FIG. 1, which communicates with the vacuum layer 21, is evacuated by an external vacuum pump 26 through an exhaust hole 25 provided in a magnetic fluid seal 24 formed inside the chamber. 27 is a guide bearing for positioning and supporting the hollow shaft 18 with respect to the fixed cylindrical member 11; 28 is a guide bearing 2;
magnetic fluid seals 24 and 13 and hollow shaft 18
The refrigerant exhaust section of the space constituted by the fixed cylindrical member 11 and the fixed cylindrical member 11 communicates with the gas phase refrigerant path 16. Here, the magnetic fluid seal 24 and the refrigerant supply pipe 19,
Metal sleeve 22, vacuum exhaust hole 23, exhaust hole 25
and the vacuum pump 26 are collectively referred to as a vacuum exhaust seal.
次に作用を説明する。冷媒給排装置の機能とし
ては液体冷媒を液相冷媒路１４から固定配管１
０、冷媒供給管１９を通り第１図に示した回転子
１の液相冷媒室５に送り、そこで気化した冷媒は
冷媒排出通路１５を通り気相冷媒路１６に排出す
ることにより液相冷媒室５内の超電導界磁コイル
６を冷却する。真空排気装置の機能としては、第
１図の回転子１の真空室８を冷媒供給管１９の真
空層２１から真空排気孔２３、排気孔２５を通り
真空ポンプ２６で真空引きを行い、液相冷媒室５
の周囲を真空断熱する。すなわち、回転子１の静
止中は勿論のこと回転中も外部より真空室２１、
真空室８の真空引きを行うことができ、真空気密
構造部の軽微なリークは問題とすることなく運転
ができる。 Next, the action will be explained. The function of the refrigerant supply and discharge device is to transport the liquid refrigerant from the liquid phase refrigerant path 14 to the fixed pipe 1.
0, the refrigerant is sent through the refrigerant supply pipe 19 to the liquid phase refrigerant chamber 5 of the rotor 1 shown in FIG. The superconducting field coil 6 in the chamber 5 is cooled. The function of the evacuation device is to evacuate the vacuum chamber 8 of the rotor 1 shown in FIG. Refrigerant chamber 5
Vacuum insulate the area around it. In other words, the vacuum chamber 21,
The vacuum chamber 8 can be evacuated, and operation can be performed without causing any problems due to slight leaks in the vacuum-tight structure.
以上のように本発明によれば、真空排気シール
を有する真空排気装置を超電導回転電機の反駆動
側軸端に装着するようにしたので、超電導回転電
機の停止中は勿論運転中でも真空引きを行うこと
ができ、気密構造部からリークがあつても問題と
することなく運転を継続することができる。ま
た、真空排気シールは回転軸の先端の軸をシール
するので軸直径が小さく、磁性流体シールの周速
が小さく発熱や遠心力による磁性流体の飛散が少
く信頼性が高いなどのすぐれた効果がある。
As described above, according to the present invention, a vacuum evacuation device having a vacuum evacuation seal is attached to the non-drive side shaft end of the superconducting rotating electric machine, so that evacuation can be performed not only when the superconducting rotating electric machine is stopped but also during operation. Even if there is a leak from the airtight structure, operation can be continued without any problem. In addition, since the vacuum exhaust seal seals the shaft at the tip of the rotating shaft, the shaft diameter is small, the circumferential speed of the magnetic fluid seal is low, and the magnetic fluid is less likely to scatter due to heat generation or centrifugal force, making it highly reliable. be.
第１図は従来の超電導回転電機の超電導回転子
を示す縦断面図、第２図は本発明の超電導回転電
機の真空排気装置の一実施例を示す縦断面図であ
る。
１……回転子、２……回転軸、６……超電導界
磁コイル、８……真空室、９……冷媒給排装置、
９ａ……内管、９ｂ……外管、１０……固定配
管、１１……固定筒状部材、１８……中空軸、１
９……冷媒供給管、２０……盲栓、２１……真空
層、２２……金属スリーブ、２３……真空排気
孔、２４……磁性流体シール、２５……排気孔、
２６……真空ポンプ。
FIG. 1 is a vertical cross-sectional view showing a superconducting rotor of a conventional superconducting rotating electric machine, and FIG. 2 is a vertical cross-sectional view showing an embodiment of a vacuum evacuation device for a superconducting rotating electric machine according to the present invention. 1... Rotor, 2... Rotating shaft, 6... Superconducting field coil, 8... Vacuum chamber, 9... Refrigerant supply/discharge device,
9a...Inner tube, 9b...Outer tube, 10...Fixed pipe, 11...Fixed cylindrical member, 18...Hollow shaft, 1
9... Refrigerant supply pipe, 20... Blind plug, 21... Vacuum layer, 22... Metal sleeve, 23... Vacuum exhaust hole, 24... Magnetic fluid seal, 25... Exhaust hole,
26...Vacuum pump.
Claims (1)
回転子の軸端に真空室で囲む超電導界磁コイルに
連通する冷媒給排装置を有する超電導回転電機の
真空排気装置において、冷媒排気セクシヨンと冷
媒供給セクシヨンとの間に設けた磁性流体シール
と、一方端を真空室に連通し他方端を密封した内
管と外管とで構成され、内管と外管の間を真空層
とし内管には液相冷媒を供給する２重管の冷媒供
給管と、前記磁性流体シールに対向して前記外管
の外周に気密接合して外管の一部を被い真空層に
真空排気孔で連通すると共に磁性流体シールの磁
気回路を形成する金属スリーブと、前記金属スリ
ーブの真空排気孔に連通する磁性流体シールを収
納する固定筒状部材の排気孔と、その排気孔を介
して真空層を真空引きする超電導回転電機の機外
に配置された真空ポンプとから成る真空排気シー
ルを有することを特徴とする超電導回転電機の真
空排気装置。1. In a vacuum evacuation system for a superconducting rotating electrical machine, which has a refrigerant supply/discharge device installed at the non-drive side shaft end of the superconducting rotating electrical machine and communicating with a superconducting field coil surrounded by a vacuum chamber at the shaft end of the rotor, a refrigerant exhaust section and It consists of a magnetic fluid seal installed between the refrigerant supply section and an inner tube and an outer tube, one end of which communicates with a vacuum chamber and the other end of which is sealed, with a vacuum layer between the inner tube and the outer tube. A double refrigerant supply pipe for supplying a liquid phase refrigerant, and a vacuum exhaust hole in a vacuum layer that is airtightly fitted to the outer periphery of the outer pipe facing the magnetic fluid seal and covering a part of the outer pipe. A metal sleeve that communicates with each other and forms a magnetic circuit of the magnetic fluid seal, an exhaust hole of a fixed cylindrical member housing the magnetic fluid seal that communicates with the vacuum exhaust hole of the metal sleeve, and a vacuum layer through the exhaust hole. 1. A vacuum evacuation device for a superconducting rotating electric machine, comprising a vacuum pump and a vacuum pump disposed outside the superconducting rotating electric machine for evacuation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115460A JPS5910153A (en) | 1982-07-05 | 1982-07-05 | Vacuum evacuating device for superconductive rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115460A JPS5910153A (en) | 1982-07-05 | 1982-07-05 | Vacuum evacuating device for superconductive rotary electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5910153A JPS5910153A (en) | 1984-01-19 |
| JPH0546780B2 true JPH0546780B2 (en) | 1993-07-14 |
Family
ID=14663092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57115460A Granted JPS5910153A (en) | 1982-07-05 | 1982-07-05 | Vacuum evacuating device for superconductive rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910153A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100727755B1 (en) | 2005-07-28 | 2007-06-13 | 두산중공업 주식회사 | Vacuum Apparatus for Exhausting Air |
| DE102011005091A1 (en) * | 2011-03-04 | 2012-09-06 | Siemens Aktiengesellschaft | A superconducting synchronous machine comprising a rotatable rotor against a stator with at least one superconducting winding |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728540A (en) * | 1980-07-23 | 1982-02-16 | Hitachi Ltd | Refrigerant feed and exhaust device for superconductive generator |
-
1982
- 1982-07-05 JP JP57115460A patent/JPS5910153A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728540A (en) * | 1980-07-23 | 1982-02-16 | Hitachi Ltd | Refrigerant feed and exhaust device for superconductive generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5910153A (en) | 1984-01-19 |
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