JPH057937B2 - - Google Patents
Info
- Publication number
- JPH057937B2 JPH057937B2 JP10213482A JP10213482A JPH057937B2 JP H057937 B2 JPH057937 B2 JP H057937B2 JP 10213482 A JP10213482 A JP 10213482A JP 10213482 A JP10213482 A JP 10213482A JP H057937 B2 JPH057937 B2 JP H057937B2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- hole
- cooling water
- pipe
- rotor
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 238000004804 winding Methods 0.000 claims description 36
- 239000000498 cooling water Substances 0.000 claims description 14
- 238000005219 brazing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000003628 erosive effect Effects 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910001347 Stellite Inorganic materials 0.000 description 2
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/22—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
- Motor Or Generator Cooling System (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は回転電機の円筒形回転子に設けられた
界磁巻線に冷却水を給排する通水パイプの接続構
造を改良した回転電機の回転子に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a rotating electrical machine with an improved connection structure for a water flow pipe that supplies and discharges cooling water to a field winding provided in a cylindrical rotor of the rotating electrical machine. Regarding the rotor.
タービン発電機の最近の大容量のものは、回転
子の界磁巻線に冷却水を給排して冷却するように
なつてきた。この従来のものの、給配水用通水パ
イプを巻線に接続する部分の構造は第１図に示す
如く、界磁巻線１のコイルエンド部にて軸方向に
突出する突出部２ａ付ブロツク２設けて通水パイ
プ３を円周方向に接続していた。この突出部付ブ
ロツク２は耐侵食性と機械的強度を考慮して、ス
テンレス系鋼材が用いられるため、巻線１の銅材
と比べ電気抵抗損が多く、加熱される原因にもな
つた。それで突出部付ブロツク２の加熱を防止す
るため、巻線１の長手方向の図示“Ａ”部での接
続をやめ、側面の破線で示した“Ｂ”部で突出部
２ａのみを接続することが考えられている。この
場合には突出部２ａは巻線１より外部に出ている
ため、回転子の回転による高遠心力で大きな曲げ
応力を受け、機械的に無理があり、さらに銅とス
テンレス鋼との異種材の溶接は技術的にも難かし
い上に、通水パイプ３が障害になつたりして、突
出部２ａが軸方向に大きく出つぱり、回転子全長
も長くなる傾向がある。
Recent large-capacity turbine generators have come to be cooled by supplying and discharging cooling water to the field windings of the rotor. As shown in FIG. 1, the structure of the part connecting the water supply and distribution pipe to the winding of this conventional one is a block 2 with a protrusion 2a that protrudes in the axial direction at the coil end of the field winding 1. The water pipes 3 were connected in the circumferential direction. This protruding block 2 is made of stainless steel in consideration of its corrosion resistance and mechanical strength, and therefore has a higher electrical resistance loss than the copper material of the winding 1, which also causes heating. Therefore, in order to prevent the block 2 with the protruding part from being heated, the connection at the "A" part shown in the longitudinal direction of the winding 1 is stopped, and only the protrusion part 2a is connected at the "B" part shown by the broken line on the side. is being considered. In this case, since the protrusion 2a protrudes from the winding 1, it is subjected to large bending stress due to the high centrifugal force caused by the rotation of the rotor, which is mechanically unreasonable. Welding is technically difficult, and the water pipe 3 becomes an obstacle, causing the protrusion 2a to protrude greatly in the axial direction, and the overall length of the rotor tends to increase.
本発明は界磁巻線と通水パイプとの接続が容易
でかつ機械的強度が大で、耐侵食性にも優れた構
造の回転電機の回転子を提供することを目的とす
る。
SUMMARY OF THE INVENTION An object of the present invention is to provide a rotor for a rotating electric machine having a structure in which the field winding and the water pipe can be easily connected, the rotor has high mechanical strength, and has excellent corrosion resistance.
本発明においては、円筒形回転子鉄心の外周に
設けた複数個の軸方向スロツトに冷却水通水穴を
長手方向に有する界磁巻線を納め、この界磁巻線
のエンド部でその界磁巻線の各層に冷却水を給排
する回転電機の回転子において、巻線エンド部側
面に冷却水通水穴と連通する通水パイプを嵌込む
軸方向穴を設け、巻線へ挿入される部分に予じめ
巻線冷却水通水穴と連通する連通穴を設けかつ先
端部に耐侵食性材料からなる蓋を取付けた通水パ
イプを直接前記軸方向穴に嵌込み、軸方向穴と通
水パイプの挿入部とをろう付け又は溶接して接続
し、これらの間を密封し、界磁巻線と通水パイプ
との接続が容易で、かつ、機械的強度が大で、耐
侵食性にも優れたものとするものである。更に説
明するならば、巻線には突出部を設けず、直接通
水パイプを巻線に挿入し、銀ろう付け又は溶接を
行ない、通水パイプ先端の蓋は例えばステライト
を用いて、これを溶接しておくので、電気的損失
が少なく、軸方向寸法が短かく、コンパクトであ
らながら狭い場所でのろう付け又は溶接が無く、
作業性にも優れ、信頼性の高いものとするもので
ある。
In the present invention, a field winding having cooling water passage holes in the longitudinal direction is housed in a plurality of axial slots provided on the outer periphery of the cylindrical rotor core, and the field winding is disposed at the end of the field winding. In the rotor of a rotating electrical machine that supplies and discharges cooling water to each layer of magnetic windings, an axial hole is provided on the side surface of the winding end portion into which a water pipe communicating with the cooling water passage hole is inserted, and the pipe is inserted into the winding. A water pipe, which has a communication hole that communicates with the winding cooling water water hole in advance and has a cover made of an erosion-resistant material attached to the tip, is directly inserted into the axial hole, and and the insertion part of the water pipe are connected by brazing or welding, and the space between them is sealed, making it easy to connect the field winding and the water pipe, and having high mechanical strength and durability. It also has excellent erodibility. To explain further, the winding is not provided with a protrusion, the water pipe is directly inserted into the winding, silver brazed or welded, and the cap at the end of the water pipe is made of Stellite, for example. Since it is welded, there is little electrical loss, the axial dimension is short, and although it is compact, there is no need for brazing or welding in a narrow space.
It also has excellent workability and is highly reliable.
以下、本発明の一実施例について、第２図ない
し第５図を参照して説明する。第２図はこの実施
例の円筒形回転子鉄心の端部の界磁巻線の周辺を
示す要部断面斜視図である。４は回転子鉄心で円
筒形をしており、その外周に複数個の軸方向スロ
ツト５が設けられており、その中に横断面が楕円
形の冷却水通水穴１０を長手方向に有する界磁巻
線１がスロツト絶縁物６を介して納められ、楔８
により遠心力に対して固定されている。通水パイ
プ３は給水パイプ３ａと排水パイプ３ｂとから成
る。各通水パイプ３ａ，３ｂはそれぞれ後述する
ように界磁巻線１に接続され、接続反対側はそれ
ぞれ軸端側に導びかれ、給水、排水のそれぞれの
集水箱（従来の公知のものと同じであるから図示
せず）に接続されている。
An embodiment of the present invention will be described below with reference to FIGS. 2 to 5. FIG. 2 is a sectional perspective view of the main part showing the vicinity of the field winding at the end of the cylindrical rotor core of this embodiment. Reference numeral 4 denotes a rotor core having a cylindrical shape, and a plurality of axial slots 5 are provided on its outer periphery. A magnetic winding 1 is housed through a slot insulator 6, and a wedge 8
fixed against centrifugal force. The water pipe 3 consists of a water supply pipe 3a and a drainage pipe 3b. Each of the water pipes 3a and 3b is connected to the field winding 1 as described later, and the opposite side of the connection is led to the shaft end side, respectively, and water collection boxes (conventional and well-known ones) for water supply and drainage are respectively connected. (not shown since they are the same).
また通水パイプ３は適当に曲げられ、界磁巻線
１のスロツト５より外部の部分、例えばエンド部
１ａ等を保持している保持環（従来の公知のもの
と同じであるから図示せず）の半径方向のふくら
みに追従するようになつており、且つ通水パイプ
３自身の遠心力に対しては間隔ブロツク９を介し
て前記保持環に支えさせる。 In addition, the water pipe 3 is suitably bent, and a retaining ring (not shown since it is the same as a conventionally known one) that retains a portion outside the slot 5 of the field winding 1, for example, the end portion 1a, etc. ), and is supported by the retaining ring via the spacing block 9 against the centrifugal force of the water pipe 3 itself.
第３図は通水パイプ３の巻線エンド部１ａへの
取付部を示す。巻線エンド部１ａの側面に加工さ
れた巻線冷却通水穴１０を横切る軸方向穴１４に
通水パイプ３が嵌め込まれ、これらの間を銀ろう
付けにより接続して密封し、機械的強度と高圧の
内水に耐えるようにしてある。第４図は第３図の
−線に沿う矢視断面図であり、第５図は通水
パイプ３の端部の斜視図であつて、通水パイプ３
の挿入部には、予じめ巻線冷却水通水穴１０と連
通する連通穴１１を設けておき、またその通水パ
イプ３の挿入部先端には耐侵食材料として、例え
ばステライト又はステンレス系材料から成る蓋１
２が取付けられている。 FIG. 3 shows the attachment portion of the water pipe 3 to the winding end portion 1a. A water pipe 3 is fitted into an axial hole 14 that crosses a winding cooling water hole 10 formed on the side surface of the winding end portion 1a, and these are connected and sealed by silver brazing to improve mechanical strength. It is designed to withstand high-pressure internal water. 4 is a sectional view taken along the line - in FIG. 3, and FIG. 5 is a perspective view of the end of the water pipe 3.
A communication hole 11 communicating with the winding cooling water passage hole 10 is provided in advance in the insertion part of the water passage pipe 3, and the tip of the insertion part of the water passage pipe 3 is made of an anti-erosion material such as stellite or stainless steel. Lid made of material 1
2 is installed.
連通穴１１は冷却水通水穴１０と、完全に一致
するように加工できれば両者は同じ大きさである
ことが望ましいが工作誤差を考えれば、連通穴１
１は冷却水通水穴１０より穴の周囲を１mm巾位大
きめに作つておく方が、通水に無理を生じない工
作を容易に行なうことができる。 It is desirable that the communicating hole 11 and the cooling water passage hole 10 be the same size if they can be machined to perfectly match each other, but considering machining errors, the communicating hole 1
1, it is better to make the circumference of the hole about 1 mm wider than the cooling water passage hole 10, so that the work can be easily carried out without straining the water passage.
通水パイプ３は銅合金又はステンレス鋼のパイ
プが使用されるが、ステンレスパイプの場合は、
予じめ表面が銀ろう付時に酸化されないように表
面処理をするか、又は還元気中にて銀ろう付する
必要がある。 A copper alloy or stainless steel pipe is used as the water pipe 3, but in the case of a stainless steel pipe,
It is necessary to perform a surface treatment in advance to prevent the surface from being oxidized during silver brazing, or to perform silver brazing in a reducing atmosphere.
次に作用について説明する。 Next, the effect will be explained.
上記構成によれば、界磁巻線１には突出部を設
けず、直接通水パイプ３を巻線１の軸方向穴１４
に挿入し、銀ろう付けを行ない、通水パイプ３先
端の蓋１２は耐侵食材料を用いているので、電気
的損失が少なく、軸方向寸法が短かく、コンパク
トでありながら狭い場所での銀ろう付作業がな
く、作業性に優れ、信頼性の高い回転電機の回転
子が得られる。 According to the above configuration, the field winding 1 is not provided with a protrusion, and the water pipe 3 is directly connected to the axial hole 14 of the winding 1.
The lid 12 at the tip of the water pipe 3 is made of corrosion-resistant material, so electrical loss is small, the axial dimension is short, and although it is compact, it can be used in narrow spaces. There is no brazing work, and a rotor for a rotating electrical machine with excellent workability and high reliability can be obtained.
尚、本発明は上記し、かつ図面に示した実施例
のみに限定されるものではなく、その要旨を変更
しない範囲で、種々変形して実施できることは勿
論である。 It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can of course be implemented with various modifications without changing the gist thereof.
以上説明したように、本発明によれば、電気的
損失が少なく、軸方向寸法が短かく、コンパクト
でありながら狭い場所でのろう付けや溶接作業が
なく、作業性に優れ、信頼性の高い回転電機の回
転子が得られる。
As explained above, according to the present invention, the electrical loss is small, the axial dimension is short, and although it is compact, there is no need for brazing or welding work in a narrow space, and the workability is excellent and the reliability is high. A rotor for a rotating electric machine is obtained.
第１図は従来の回転電機の回転子の給排水部を
示す斜視図、第２図は本発明の回転電機の回転子
の一実施例の要部を示す斜視図、第３図は第２図
の通水パイプ取付部を示す斜視図、第４図は第３
図の−線に沿う矢視断面図、第５図は第３図
の通水パイプを示す要部斜視図である。
１……界磁巻線、１ａ……巻線エンド部、３…
…通水パイプ、３ａ……給水パイプ、３ｂ……排
水パイプ、４……回転子鉄心、５……スロツト、
１０……通水穴、１１……連通穴、１２……蓋、
１４……軸方向穴。
FIG. 1 is a perspective view showing a water supply and drainage section of a rotor of a conventional rotating electric machine, FIG. 2 is a perspective view showing a main part of an embodiment of a rotor of a rotating electric machine according to the present invention, and FIG. Figure 4 is a perspective view showing the water pipe attachment part of Figure 3.
FIG. 5 is a cross-sectional view taken along the line - in the figure, and FIG. 5 is a perspective view of a main part showing the water pipe of FIG. 3. 1... Field winding, 1a... Winding end portion, 3...
...Water pipe, 3a...Water supply pipe, 3b...Drainage pipe, 4...Rotor core, 5...Slot,
10...Water hole, 11...Communication hole, 12...Lid,
14...Axial hole.
Claims (1)
方向スロツトに冷却水通水穴を長手方向に有する
界磁巻線を納め、この界磁巻線のエンド部でその
界磁巻線の各層に冷却水を給排する回転電機の回
転子において、巻線エンド部側面に冷却水通水穴
と連通する通水パイプを嵌込む軸方向穴を設け、
巻線へ挿入される部分に予じめ巻線冷却水通水穴
と連通する連通穴を設けかつ先端部に耐侵食性材
料からなる蓋を取付けた通水パイプを直接前記軸
方向穴に嵌込み、軸方向穴と通水パイプの挿入部
とをろう付け又は溶接して接続し、これらの間を
密封したことを特徴とする回転電機の回転子。1 A field winding having cooling water passage holes in the longitudinal direction is housed in a plurality of axial slots provided on the outer periphery of the cylindrical rotor core, and the field winding is connected at the end of the field winding. In the rotor of a rotating electrical machine that supplies and discharges cooling water to each layer, an axial hole is provided on the side surface of the winding end portion into which a water pipe communicating with the cooling water passage hole is inserted.
A communication hole communicating with the winding cooling water passage hole is provided in advance in the part to be inserted into the winding, and a water passage pipe with a lid made of an erosion-resistant material attached to the tip is directly inserted into the axial hole. A rotor for a rotating electrical machine, characterized in that an axial hole and an insertion part of a water pipe are connected by brazing or welding, and the space between them is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10213482A JPS58222757A (en) | 1982-06-16 | 1982-06-16 | Rotor for rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10213482A JPS58222757A (en) | 1982-06-16 | 1982-06-16 | Rotor for rotary electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58222757A JPS58222757A (en) | 1983-12-24 |
| JPH057937B2 true JPH057937B2 (en) | 1993-01-29 |
Family
ID=14319291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10213482A Granted JPS58222757A (en) | 1982-06-16 | 1982-06-16 | Rotor for rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58222757A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9848544B2 (en) | 2012-07-11 | 2017-12-26 | Growponics Greenhouse Technology Ltd. | Automated hydroponic greenhouse factory |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7139969B2 (en) * | 2019-01-22 | 2022-09-21 | トヨタ自動車株式会社 | Rotating electric machine |
| JP2020171096A (en) * | 2019-04-02 | 2020-10-15 | 株式会社Ihi | Stator |
| KR102298853B1 (en) * | 2021-04-16 | 2021-09-07 | 서영대학교 산학협력단 | Hairpin assembly for hairpin winding motor |
| KR102360292B1 (en) * | 2021-06-23 | 2022-02-09 | 홍성용 | Hairpin assembly for hairpin winding motor |
-
1982
- 1982-06-16 JP JP10213482A patent/JPS58222757A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9848544B2 (en) | 2012-07-11 | 2017-12-26 | Growponics Greenhouse Technology Ltd. | Automated hydroponic greenhouse factory |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58222757A (en) | 1983-12-24 |
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