JPS58175943A - Rotor for rotary electric machine - Google Patents
Rotor for rotary electric machineInfo
- Publication number
- JPS58175943A JPS58175943A JP5803282A JP5803282A JPS58175943A JP S58175943 A JPS58175943 A JP S58175943A JP 5803282 A JP5803282 A JP 5803282A JP 5803282 A JP5803282 A JP 5803282A JP S58175943 A JPS58175943 A JP S58175943A
- Authority
- JP
- Japan
- Prior art keywords
- slot
- insulator
- rotor
- electric machine
- wall
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明はスロット絶縁物を比較的薄くシ、シかも機械的
劣化に強く、電気絶縁特性を良好に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 relates to a rotor for a rotating electric machine in which the slot insulator is relatively thin, resistant to mechanical deterioration, and has good electrical insulation properties.
タービン発電機のように円筒形回転子を有する回転電機
の回転子のスロット絶縁物は、十分な電気絶縁特性を有
すると共に、機械的負荷に耐えるものである仁とが要求
される。従来は主としてマイカ積層シートをスロットと
同一の形に加工し、スロット内に入れる構造が用いられ
てきたが、マイカ積層シートの機械的特性は超大形回転
子には満足の得られるものではなかった。最近、ガラス
フィラメントやガラスクロスを使用した積層形絶縁シー
トが開発され、これにより、マイカ積層シートに比べ、
機械的特性が著しく改善されたが、それでも特定方向の
力に対してき裂が発生し易い欠点があり、スロットに回
転子コイルを入れる作業時に、入れ傷みを生じる可能性
があった。その丸め、絶縁厚さを薄くすることが出来ず
、回転子コイルから鉄心への熱伝達率が悪く、コイル導
体の占積率も小さくなり、回転子の小形軽量化が困離で
あった。The slot insulator of the rotor of a rotating electric machine having a cylindrical rotor, such as a turbine generator, is required to have sufficient electrical insulation properties and to withstand mechanical loads. Conventionally, a structure was used in which a mica laminated sheet was processed into the same shape as the slot and inserted into the slot, but the mechanical properties of the mica laminated sheet were not satisfactory for ultra-large rotors. . Recently, laminated insulating sheets using glass filament or glass cloth have been developed, and compared to mica laminated sheets,
Although the mechanical properties have been significantly improved, there is still a drawback that cracks are likely to occur due to force in a specific direction, and there is a possibility that damage may occur when inserting the rotor coil into the slot. The rounding and insulation thickness could not be made thinner, the heat transfer rate from the rotor coil to the iron core was poor, and the space factor of the coil conductors was also small, making it difficult to reduce the size and weight of the rotor.
本発明はスロット絶縁物の電気絶縁特性を維持し、機械
的負荷に耐え、!l!iK回転子コイルをスロットに納
める作業時のスロット絶縁物の入れ傷みがなく、変形す
ることもなく、シかもそのスロット絶縁物の厚さを薄く
して小形軽量化を計れ、信頼性の高い回転電機の回転子
を提供することを目的とする。The present invention maintains the electrical insulation properties of the slot insulator, withstands mechanical loads, and! l! When inserting the iK rotor coil into the slot, the slot insulator will not be damaged or deformed, and the thickness of the slot insulator can be made thinner to make it smaller and lighter, resulting in highly reliable rotation. The purpose is to provide rotors for electrical machinery.
本発明においては、スロット絶縁物をスロット壁に付着
させることに特徴を有し、そのスロット壁に付着するス
ロット絶縁物は、絶縁フィルムの両面にアラミツド紙を
接着剤で接着したものを用いて、これを接着剤でスロッ
ト壁に接着したり、・或いはエポキシ樹脂を静電塗装に
付着させた被膜層とし、後者には更にその内側にガラス
クロスから、回転子コイルをスロットに納める作業時の
スロット絶縁物の入れ傷みがなく、変形することもなく
、電気絶縁特性を維持し、機械的負荷に耐え、小形軽量
化を計れ、信頼性の高い回転電機の回転子とするもので
ある。The present invention is characterized in that the slot insulator is attached to the slot wall, and the slot insulator attached to the slot wall is made of an insulating film with aramid paper bonded to both sides with an adhesive. This is adhered to the slot wall with adhesive, or a coating layer is made by adhering epoxy resin to electrostatic coating, and the latter is further coated with glass cloth on the inside to form the slot when the rotor coil is housed in the slot. The present invention provides a highly reliable rotor for a rotating electric machine that does not cause damage or deformation of the insulator, maintains electrical insulation properties, withstands mechanical loads, is compact and lightweight.
実施例1
以下、本発明の第1の実施例について、第1図ないし第
3図を参照して説明する。Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
円筒状回転子鉄心(1)に複数個(第1図では1個だけ
示す)の軸方向スロット(2)を設け、この内壁に後述
するU字形のスロット絶縁物(3)を付着して、その中
に回転子コイル(4)を納め、この回転子コイル(4)
のターン間にはターン間絶縁物(5)を介在させ、また
回転子コイル(4)の上部は楔下絶縁物(6)を介して
# (7)で押えている。A plurality of axial slots (2) (only one is shown in FIG. 1) are provided in the cylindrical rotor core (1), and a U-shaped slot insulator (3), which will be described later, is attached to the inner wall of the slot. The rotor coil (4) is housed in it, and this rotor coil (4)
An inter-turn insulator (5) is interposed between the turns, and the upper part of the rotor coil (4) is held down by # (7) via a wedge insulator (6).
しかしてこのスロット絶縁物(3)は第2図に示すよう
に、カプトン(デュポン社製商品名)や、ルミラー(東
し社製商品名)のような電気絶縁特性に優れた絶縁フィ
ルム(8)の両面に1機械的劣化に強いアラミツド紙(
9)(例えばデュポン社製商品名ノーメックスシート)
を次に述べる接着剤で貼り合せ友ものを、第3図のよう
に、スロット(2)壁に上記接着剤で接着する。上記接
着剤はビスフェノールAタイプ樹脂(例えばシェル社製
商品名エピコートBp828)とメチル基メチルインダ
ゾル(例えば四国化成社製商品名24イミダシル)とシ
リ合
力粉末とを重量比100:3L5:50で配糖したも、
のを使用した。However, as shown in Figure 2, the slot insulator (3) of the lever is an insulating film (8) with excellent electrical insulation properties such as Kapton (trade name manufactured by DuPont) or Lumirror (trade name manufactured by Toshisha Co., Ltd.). ) is coated with aramid paper that is resistant to mechanical deterioration (
9) (For example, DuPont product name Nomex sheet)
Then, as shown in FIG. 3, the other parts are attached to the wall of the slot (2) using the adhesive described below. The above adhesive contains a bisphenol A type resin (for example, Epicoat Bp828 manufactured by Shell Co., Ltd.), a methyl group methyl indazole (for example, 24 Imidacil manufactured by Shikoku Kasei Co., Ltd.), and silicate powder in a weight ratio of 100:3L5:50. Sweet potato,
I used the.
次に作用について説明する。Next, the effect will be explained.
カプトンやルミラーのような絶縁フィルム(8)は、肉
厚が薄く、かつ電気絶縁特性に優れている。しかし、絶
縁フィルム(8)単体では機械的強度が弱く、コイル入
れの際、入れ傷みを生ずる。ノーメックスシートのよう
なアラミツド紙(9)は肉厚が薄く、しかして機械的強
度に優れている。従って絶縁フィルム(8)の両面にア
ラミツド紙(9)を貼に合せ九スロット絶縁物(3)は
、電気的にも機械的にも優れ九強度を有するものとなる
。しかも、これをスロット(2)壁に接着してしまうの
で、コイル入れの際スロット絶縁物(3)に入れ傷みを
生ずる恐れは全くない。そして、このスロット絶縁物(
3)は薄いため、どのような形のスロット(2)にも容
易に貼り付けられ、従来のように対地絶縁物をスロット
形状に合せて形成する必要がない。その上、前記したよ
うに上記スロット絶縁物(3)は肉厚が薄いから、−転
子コイル(4)のスロット内導体占積率が、大幅に向上
し、しかも熱電伝達率も良好になるから冷却性能殖良く
、回転子の小形、軽量化が可能となる。Insulating films (8) such as Kapton and Lumirror are thin and have excellent electrical insulation properties. However, the mechanical strength of the insulating film (8) alone is weak, and damage occurs when the coil is inserted. Aramid paper (9) such as Nomex sheet is thin and has excellent mechanical strength. Therefore, by laminating aramid paper (9) on both sides of the insulating film (8), the nine-slot insulator (3) has superior strength both electrically and mechanically. Furthermore, since this is adhered to the wall of the slot (2), there is no risk of damaging the slot insulator (3) when inserting the coil. And this slot insulator (
3) is thin, so it can be easily attached to any shape of the slot (2), and there is no need to form the ground insulator to fit the slot shape as in the conventional case. Moreover, as mentioned above, since the slot insulator (3) is thin, the space factor of the conductor in the slot of the -trochanter coil (4) is greatly improved, and the thermoelectric transfer coefficient is also improved. This improves cooling performance, making it possible to make the rotor smaller and lighter.
実施例2
次に第2の実施例について、第4図を参照して説明する
。Example 2 Next, a second example will be described with reference to FIG. 4.
これはスロット(2)の壁面にエポキシ樹脂260(3
M社製商品名)やNPC360C三菱化成社製商品名)
のようなエポキシ樹脂を静電塗装により被膜層重を付着
する。その内側にガラスクロスから成る保護層住υを挿
入する。他は実施例1と同様である。This is applied to the wall of the slot (2) with epoxy resin 260 (3
(Product name manufactured by M Company) and NPC360C (Product name manufactured by Mitsubishi Chemical Corporation)
A coating layer is applied by electrostatic coating with an epoxy resin such as epoxy resin. A protective layer made of glass cloth is inserted inside it. The rest is the same as in Example 1.
次に作用について説明する。Next, the effect will be explained.
エポキシ樹脂Ql oJe縁耐力は20〜40 kV/
+w if>す、従ってエポキシ樹脂α1の絶縁被膜の
厚さ社025目程度で5〜10 kVの絶縁耐力を有す
。そして、静電塗装によって付着させるから、スロット
形状がどのような形状でもよい。このエポキシ樹脂の被
膜層01の内側には保護層at+を挿入しであるから、
被膜層重を機械的衝撃から保譲することになる。この保
護層αυは従来の対地絶縁物と同様な形であるが、対地
絶縁はエポキシ樹脂の被膜層−が受持つので、単にコイ
ル入れの際の入れ傷み等の機械的応力から被膜層Hを保
護すればよい。そのため、保護層Qυは薄くでき、被膜
層積が薄いことと相まって、回転子コイル(4)のスロ
ット内導体占積率が大幅に向上し、しか−熱伝達率も良
好になるから、冷却性能が良く、回転子の小形、軽量化
が可能となる。Epoxy resin QloJe edge strength is 20-40 kV/
+w if>, therefore, the insulation coating of the epoxy resin α1 has a dielectric strength of 5 to 10 kV when the thickness is about 025 mm. Since the adhesive is attached by electrostatic coating, the slot may have any shape. Since a protective layer at+ is inserted inside this epoxy resin coating layer 01,
This will protect the coating layer from mechanical impact. This protective layer αυ has the same shape as a conventional ground insulator, but since the ground insulation is handled by the epoxy resin coating layer, the coating layer H is simply protected from mechanical stress such as damage caused when inserting the coil. Just protect it. Therefore, the protective layer Qυ can be made thinner, and in combination with the thin film layer thickness, the space factor of the conductor in the slot of the rotor coil (4) is greatly improved, and the heat transfer coefficient is also improved, resulting in cooling performance. This makes it possible to make the rotor smaller and lighter.
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、例えば接着剤は他の接着痢を使
用してもよいし、保護層Iも他の材質のものを使用して
もよい等、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。Note that the present invention is not limited to the embodiments described above and shown in the drawings; for example, other adhesives may be used as the adhesive, and the protective layer I may also be made of other materials. It goes without saying that the invention can be modified and implemented in various ways without changing the gist of the invention.
以上説明し九ように、本発明によれば、スロット絶縁物
をスロット壁に付着させたことにより、回転子コイルを
スロット内に入れる時にスロット絶縁物に入れ傷みが生
ずることなく、スロット絶縁物1ま肉厚が極薄であって
熱伝達率が良好になり、従って小形軽量化を計れ、信頼
性の高い回転電機の回転子を提供することができる。As explained above, according to the present invention, since the slot insulator is attached to the slot wall, when the rotor coil is inserted into the slot, the slot insulator is not damaged. Since the wall thickness is extremely thin, the heat transfer coefficient is good, and therefore, it is possible to provide a rotor for a rotating electric machine that is compact and lightweight, and has high reliability.
第1図は本発明の回転電機の回転子の第1の実施例のス
ロット部を示す横断面図、第2図は、第1図のスロット
絶縁物を示す要部拡大断面図、第3図は、第2図のスロ
ット絶縁物をスロット壁に貼付けた状態を示す横断面図
、第4図は第2の実施例のスロット絶縁物をスロット壁
に付着させた状態を示す横断面図である。
l・・回転子鉄心 2・・・スロット3・スロ
ット絶縁物 4・・・回転子コイル8・・・絶縁フ
ィルム 9・・・アラミツド紙10・・・被膜層
11・・・保躾層代理人 弁理士 井
上 −男
第 1 図 第 3 図第
4 図
IFIG. 1 is a cross-sectional view showing a slot portion of a first embodiment of a rotor for a rotating electrical machine according to the present invention, FIG. 2 is an enlarged cross-sectional view of a main part showing the slot insulator of FIG. 1, and FIG. is a cross-sectional view showing the slot insulator of FIG. 2 attached to the slot wall, and FIG. 4 is a cross-sectional view showing the slot insulator of the second embodiment attached to the slot wall. . l... Rotor core 2... Slot 3/Slot insulator 4... Rotor coil 8... Insulating film 9... Aramid paper 10... Coating layer 11... Maintenance layer agent Patent Attorney I
Top - Male Figure 1 Figure 3 Figure 4 Figure I
Claims (3)
け、スロット中に回転子コイルを納め、回転子コイルと
回転子鉄心とをスロット絶縁物で絶縁し九回転電機の回
転子において、スロット絶縁物はスロット壁に付着させ
たことを特徴とする回転電機の回転子。(1) In a rotor of a nine-rotary electric machine, a cylindrical rotor core is provided with a plurality of axial slots, a rotor coil is housed in the slot, and the rotor coil and rotor core are insulated with a slot insulator. A rotor for a rotating electrical machine, characterized in that a slot insulator is attached to a slot wall.
ルムの両面にアラミツド紙を接着剤で接着したものを用
い、これを接着剤でスロット壁に接着したことを特徴と
する特許請求の範囲第1項記載の回転電機の回転子。(2) The slot insulator attached to the slot wall is made of an insulating film with aramid paper bonded to both sides with an adhesive, and this is bonded to the slot wall with an adhesive. The rotor of the rotating electric machine described in Section 1.
エポキシ樹脂を静電塗装により付着させ九−膜層とし、
更にその内側にガラスクロスから成る保護層を挿入した
ことを特徴とする特許請求の範囲第1項記載の回転電機
の回転子。(3) The slot insulator attached to slot l1llK is
Epoxy resin is attached by electrostatic coating to form a nine-layer layer,
A rotor for a rotating electric machine according to claim 1, further comprising a protective layer made of glass cloth inserted inside the rotor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5803282A JPS58175943A (en) | 1982-04-09 | 1982-04-09 | Rotor for rotary electric machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5803282A JPS58175943A (en) | 1982-04-09 | 1982-04-09 | Rotor for rotary electric machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58175943A true JPS58175943A (en) | 1983-10-15 |
Family
ID=13072601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5803282A Pending JPS58175943A (en) | 1982-04-09 | 1982-04-09 | Rotor for rotary electric machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58175943A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0336042A2 (en) * | 1988-04-08 | 1989-10-11 | General Electric Company | Dynamoelectric machine rotor |
-
1982
- 1982-04-09 JP JP5803282A patent/JPS58175943A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0336042A2 (en) * | 1988-04-08 | 1989-10-11 | General Electric Company | Dynamoelectric machine rotor |
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