JPH056415B2 - - Google Patents
Info
- Publication number
- JPH056415B2 JPH056415B2 JP60217544A JP21754485A JPH056415B2 JP H056415 B2 JPH056415 B2 JP H056415B2 JP 60217544 A JP60217544 A JP 60217544A JP 21754485 A JP21754485 A JP 21754485A JP H056415 B2 JPH056415 B2 JP H056415B2
- Authority
- JP
- Japan
- Prior art keywords
- stator core
- oil
- vertical shaft
- impermeable layer
- axial end
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000003921 oil Substances 0.000 description 13
- 239000012634 fragment Substances 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は立軸形回転電機の固定子鉄心に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a stator core for a vertical shaft rotating electric machine.
第３図から第７図には立軸形の回転電機および
固定子鉄心の従来例が示されている。立軸形回転
電機の固定子は、固定子枠１に設置された固定子
鉄心２、この固定子鉄心２のスロツト３に挿入さ
れた固定子線輪４を備えている。回転子は、回転
軸５、回転軸５の下部に配設され、かつ回転軸５
の重量を支持するスラスト軸受６、回転軸５の上
部に配設された案内軸受７、回転軸５の外周に配
設された固定子鉄心８等から構成されている。
3 to 7 show conventional examples of vertical shaft type rotating electric machines and stator cores. A stator of a vertical shaft rotating electric machine includes a stator core 2 installed in a stator frame 1, and a stator wire ring 4 inserted into a slot 3 of the stator core 2. The rotor is disposed below the rotating shaft 5 and the rotating shaft 5.
The shaft bearing 6 includes a thrust bearing 6 that supports the weight of the rotating shaft 5, a guide bearing 7 disposed above the rotating shaft 5, a stator core 8 disposed around the outer periphery of the rotating shaft 5, and the like.
このように構成された立軸形回転電機の固定子
鉄心２で、固定子鉄心２は薄い電磁鋼板２ａが軸
方向に積層され、その軸方向端部９の歯部１０は
過電流低減対策や軸方向漂遊磁束を小さくするた
め、内周側の軸方向に段付部１１が設けられ、か
つその段付部１１に溝１２が設けられている。 In the stator core 2 of the vertical shaft type rotating electric machine configured in this way, the stator core 2 is made up of thin electromagnetic steel plates 2a laminated in the axial direction, and the teeth 10 on the axial end 9 are used for overcurrent reduction measures and shaft In order to reduce directional stray magnetic flux, a stepped portion 11 is provided in the axial direction on the inner peripheral side, and a groove 12 is provided in the stepped portion 11.
ところで最近、固定子鉄心２の歯部１０、特に
段付部１１および溝１２を設けた軸方向端部９の
歯部１０は変形部１３を形成して破損し、その破
損した破片がずれ出し、固定子鉄心２のスロツト
３に挿入された固定子線輪４を損傷する事故が
度々発生している。なおこの種の固定子鉄心に関
するものとして特公昭59−44864号公報がある。 Recently, however, the teeth 10 of the stator core 2, particularly the teeth 10 of the axial end 9 provided with the stepped portion 11 and the groove 12, have been damaged by forming a deformed portion 13, and the broken pieces have been displaced. Accidents that damage the stator coil 4 inserted into the slot 3 of the stator core 2 frequently occur. Note that Japanese Patent Publication No. 59-44864 relates to this type of stator core.
本発明は以上の点に鑑みなされたものであり、
固定子鉄心歯部の変形破損、破片のずれ出しを防
止し、固定子線輪の損傷防止を可能とした立軸形
回転電機の固定子鉄心を提供することを目的とす
るものである。
The present invention has been made in view of the above points,
The object of the present invention is to provide a stator core for a vertical shaft type rotating electrical machine that prevents deformation and breakage of stator core teeth and displacement of fragments, and prevents damage to stator coils.
すなわち本発明は上方部に軸受の油槽を有し、
かつその下方部に軸方向に積層されたセグメント
状の薄い電磁鋼板を備え、前記電磁鋼板はその内
周側の周方向に所定の間隔をもつて配置された複
数個のスロツトを有しており、かつその積層端部
に過電流を低減する段付部および溝部を有してい
る立軸形回転電機の固定子鉄心において、前記固
定子鉄心の内周面の軸方向端部近傍で、かつ前記
段付部および溝部を油不透過層で覆つたことを特
徴とするものであり、これによつて軸方向端部近
傍の段付部および溝部は油不透過層で覆われるよ
うになる。
That is, the present invention has an oil tank for the bearing in the upper part,
and a segment-shaped thin electromagnetic steel plate laminated in the axial direction at the lower part thereof, and the electromagnetic steel plate has a plurality of slots arranged at predetermined intervals in the circumferential direction on the inner circumferential side thereof. , and has a stepped portion and a groove portion for reducing overcurrent at the laminated end portions of the vertical shaft rotary electric machine, in which the stator core is provided near the axial end portion of the inner peripheral surface of the stator core; It is characterized in that the stepped portion and the groove portion are covered with an oil-impermeable layer, so that the stepped portion and the groove portion near the axial end portion are covered with the oil-impermeable layer.
発明者等は固定子鉄心歯部が何故変形破損し、
その破片がずれ出すのかを種々検討し、ずれ出し
を防止し、固定子線輪の損傷を防止するにはどの
ようにしたらよいかを検討した。その検討結果を
次に述べるが、検討に当つては上述の第３図から
第７図を参照にした。破片のずれ出しの原因は固
定子鉄心２の材質や厚みに起因するものと考え、
材質変更、厚み変更、歯部１０の溝１２の位置変
更等種々試験検討した結果、固定子鉄心２の材質
や厚みに起因するものではなく、積層した薄い電
磁鋼板２ａの積層間に浸入した油に起因すること
が判明した。すなわち立軸形回転電機の回転子は
上述のように回転軸５の下部には回転軸５の重量
を支持するスラスト軸受６があり、上部には案内
軸受７がある。この上部の軸受装置は回転軸５と
一体になつたランナ１４と、このランナ１４と油
隙１５を介して摺動している案内軸受７と、これ
らのランナ１４および軸受７を包囲し、内部に潤
滑油１６を収納している油槽１７とを有してい
る。最近の回転電機の大容量化並びに高速化に伴
つて案内軸受７も大形化し、軸受７の油量の増加
と回転軸５の高速化による撹拌作用の増大によつ
て油槽１７内の油霧が発生する。この発生した油
霧は第３図中にも矢印で示してあるように回転軸
５と油槽１７との間のギヤツプ１８を通り、回転
子から固定子へと流れ、固定子鉄心２の内周面、
特に固定鉄心２の軸方向端部９の段付部１１に付
着するのが確認された。また、この付着した潤滑
油１６は、長い運転中には積層した電磁鋼板２ａ
の積層間に浸入していくのが判明した。固定子鉄
心２は固定子鉄心端板１９と締付ボルト２０とに
より所定の面圧で締付けられているが、潤滑油１
６が電磁鋼板２ａの積層間に浸入すると面圧に変
動はないが積層間の摩擦力が小さくなり、軸方向
端部９の歯部１０は運転中の振動や電磁力等によ
り動き、その動きにより歯部１０が変形破損し、
破損した破片がずれ出すことが判つた。特に歯部
１０に溝１２を設けたものは溝１２の付根部より
変形が生じる。これらのことから油霧が固定子鉄
心２の軸方向端部９に付着しないようにすればよ
いことが確かめられた。そこで本発明では固定子
鉄心の内周面の軸方向端部近傍に、この端部近傍
を覆う油不透過層を設けた。このようにすること
により固定子鉄心歯部の変形破損、破片のずれ出
しを防止し、固定子線輪の損傷防止を可能とした
立軸形回転電機の固定子鉄心を得ることを可能と
したものである。 The inventors discovered why the stator core teeth were deformed and damaged.
Various studies were conducted to determine whether the fragments could become displaced, and how to prevent such displacement and damage to the stator coils. The results of the study will be described below, with reference to the above-mentioned FIGS. 3 to 7. We believe that the cause of the fragments being displaced is due to the material and thickness of stator core 2.
As a result of various tests such as changing the material, changing the thickness, and changing the position of the groove 12 of the tooth portion 10, it was found that the problem was not due to the material or thickness of the stator core 2, but that oil had penetrated between the laminations of the laminated thin electromagnetic steel sheets 2a. It turned out to be caused by. That is, as described above, the rotor of the vertical shaft type rotating electric machine has a thrust bearing 6 at the lower part of the rotating shaft 5 that supports the weight of the rotating shaft 5, and a guide bearing 7 at the upper part. This upper bearing device includes a runner 14 integrated with the rotating shaft 5, a guide bearing 7 sliding on the runner 14 through an oil gap 15, and surrounding these runners 14 and bearing 7, and It has an oil tank 17 containing lubricating oil 16 at the bottom. With the recent increase in the capacity and speed of rotating electric machines, the guide bearing 7 has also become larger, and the oil mist in the oil tank 17 is increased due to an increase in the amount of oil in the bearing 7 and an increase in the agitation effect due to the increase in the speed of the rotating shaft 5. occurs. The generated oil mist passes through the gap 18 between the rotating shaft 5 and the oil tank 17, as indicated by the arrow in FIG. surface,
In particular, it was confirmed that the particles adhered to the stepped portion 11 of the axial end portion 9 of the fixed iron core 2. Also, during long operation, this attached lubricating oil 16 is removed from the laminated electromagnetic steel sheets 2a.
It was found that it penetrated between the laminated layers. The stator core 2 is tightened with a predetermined surface pressure by the stator core end plates 19 and tightening bolts 20, but the lubricating oil 1
6 penetrates between the laminations of the electromagnetic steel sheets 2a, the surface pressure does not change, but the frictional force between the laminations decreases, and the teeth 10 on the axial end 9 move due to vibrations, electromagnetic force, etc. during operation, and the movement The tooth portion 10 is deformed and damaged due to
It was found that the damaged pieces could be displaced. In particular, when the tooth portion 10 is provided with a groove 12, deformation occurs from the base of the groove 12. From these facts, it was confirmed that it is sufficient to prevent oil mist from adhering to the axial end portion 9 of the stator core 2. Therefore, in the present invention, an oil-impermeable layer is provided in the vicinity of the axial end of the inner peripheral surface of the stator core to cover the vicinity of this end. By doing this, it is possible to obtain a stator core for a vertical shaft type rotating electrical machine that prevents deformation and damage to the stator core teeth and the displacement of fragments, and prevents damage to the stator coils. It is.
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。本実施例では固定子鉄心２の
内周面の軸方向端部９近傍に、この端部９近傍を
覆う油不透過層を設けた。そしてこの油不透過層
を軸方向端部９近傍に塗布・形成した樹脂２１で
形成した。このようにすることにより固定子鉄心
２の内周面の軸方向端部９近傍に、この端部９近
傍を覆う樹脂２１が設けられるようになつて、軸
方向端部９近傍は樹脂２１で覆われて軸方向端部
９には油霧が付着しないようになり、固定子鉄心
歯部の変形破損、破片のずれ出しを防止し、固定
子線輪の損傷防止を可能とした立軸形回転電機の
固定子鉄心２を得ることができる。
The present invention will be explained below based on the illustrated embodiments. FIG. 1 shows an embodiment of the invention. Note that parts that are the same as those in the conventional system are given the same reference numerals, and therefore their explanations will be omitted. In this embodiment, an oil-impermeable layer is provided near the axial end 9 of the inner circumferential surface of the stator core 2 to cover the vicinity of the end 9. This oil-impermeable layer was formed from a resin 21 that was applied and formed near the axial end portion 9. By doing this, the resin 21 is provided near the axial end 9 of the inner circumferential surface of the stator core 2 to cover the vicinity of the end 9, and the resin 21 is provided near the axial end 9. The covered shaft prevents oil mist from adhering to the axial end 9, prevents deformation and damage to the stator core teeth, prevents fragments from slipping out, and prevents damage to the stator coils. A stator core 2 for an electric machine can be obtained.
すなわち固定子鉄心２の軸方向端部９近傍に熱
硬化性または自然硬化性の樹脂２１を塗布し、樹
脂２１の油不透過層を形成した。このようにする
ことにより油槽内に発生した油霧は樹脂２１に付
着するようになつて、樹脂２１で覆われた固定子
鉄心２の軸方向端部９には付着せず、電磁鋼板の
積層部には潤滑油が浸入しないようになる。従つ
て固定子鉄心歯部の摩擦力は変化せず、歯部の変
形破損がなく、破片のずれ出しが発生しないので
固定子線輪の損傷が防止される。 That is, a thermosetting or naturally hardening resin 21 was applied near the axial end 9 of the stator core 2 to form an oil-impermeable layer of the resin 21. By doing this, the oil mist generated in the oil tank will adhere to the resin 21 and will not adhere to the axial end 9 of the stator core 2 covered with the resin 21. This prevents lubricating oil from entering the area. Therefore, the frictional force of the stator core teeth does not change, the teeth are not damaged by deformation, and no fragments are dislodged, so damage to the stator coil is prevented.
第２図には本発明の他の実施例が示されてい
る。本実施例では油不透過層を、軸方向端部９を
覆つた非磁性のカバー２２で形成した。このよう
にすることにより油不透過層は軸方向端部９を覆
つた非磁性のカバー２２で形成されるようになつ
て、前述の場合と同様な作用効果を奏することが
できる。 Another embodiment of the invention is shown in FIG. In this example, the oil-impermeable layer was formed by a non-magnetic cover 22 that covered the axial end portion 9. By doing so, the oil-impermeable layer is formed by the non-magnetic cover 22 that covers the axial end portion 9, and the same effects as in the case described above can be achieved.
上述のように本発明は固定子鉄心歯部の変形破
損、破片のずれ出しが防止され、固定子線輪の損
傷が防止されるようになつて、固定子鉄心歯部の
変形破損、破片のずれ出しを防止し、固定子線輪
の損傷防止を可能とした立軸形回転電機の固定子
鉄心を得ることができる。
As described above, the present invention prevents deformation and breakage of the stator core teeth and displacement of fragments, prevents damage to the stator coil, and prevents deformation and breakage of the stator core teeth and debris. It is possible to obtain a stator core for a vertical shaft rotating electrical machine that prevents displacement and prevents damage to the stator coil.
第１図は本発明の立軸形回転電機の固定子鉄心
の一実施例の側面図、第２図は本発明の立軸形回
転電機の固定子鉄心の他の実施例の側面図、第３
図は従来の立軸形回転電機の固定子鉄心による水
車発電機の縦断側面図、第４図は従来の立軸形回
転電機の固定子鉄心の案内軸受周りの縦断側面
図、第５図は従来の立軸形回転電機の固定子鉄心
の固定子鉄心歯部の変形状態を示す電磁鋼板の正
面図、第６図は従来の立軸形回転電機の固定子鉄
心の軸方向端部の斜視図、第７図は従来の立軸形
回転電機の固定子鉄心の側面図である。
２……固定子鉄心、２ａ……電磁鋼板、３……
スロツト、４……固定子線輪、７……案内軸受、
９……軸方向端部、１０……歯部、１１……段付
部、１２……溝、１３……変形部、１９……固定
子鉄心端板、２０……締付ボルト、２１……樹脂
（油不透過層）、２２……非磁性のカバー（油不透
過層）。
FIG. 1 is a side view of one embodiment of the stator core of the vertical shaft type rotating electrical machine of the present invention, FIG. 2 is a side view of another embodiment of the stator core of the vertical shaft type rotating electrical machine of the present invention, and FIG.
The figure is a vertical side view of a water turbine generator using the stator core of a conventional vertical shaft type rotating electrical machine. Figure 4 is a vertical side view of the area around the guide bearing of the stator core of a conventional vertical shaft type rotating electrical machine. FIG. 6 is a front view of an electromagnetic steel sheet showing the deformed state of the stator core tooth portion of the stator core of a vertical shaft rotating electrical machine; FIG. 6 is a perspective view of the axial end of the stator core of a conventional vertical shaft rotating electrical machine; FIG. The figure is a side view of a stator core of a conventional vertical shaft rotating electric machine. 2...Stator core, 2a...Electromagnetic steel plate, 3...
slot, 4... stator coil, 7... guide bearing,
9... Axial end portion, 10... Teeth portion, 11... Stepped portion, 12... Groove, 13... Deformed portion, 19... Stator core end plate, 20... Tightening bolt, 21... ...Resin (oil-impermeable layer), 22...Nonmagnetic cover (oil-impermeable layer).
Claims (1)
に軸方向に積層されたセグメント状の薄い電磁鋼
板を備え、前記電磁鋼板はその内周側の周方向に
所定の間隔をもつて配置された複数個のスロツト
を有しており、かつその積層端部に過電流を低減
する段付部および溝部を有している立軸形回転電
機の固定子鉄心において、前記固定子鉄心の内周
面の軸方向端部近傍で、かつ前記段付部および溝
部を油不透過層で覆つたことを特徴とする立軸形
回転電機の固定子鉄心。 ２ 前記油不透過層が、樹脂で形成されたもので
ある特許請求の範囲第１項記載の立軸形回転電機
の固定子鉄心。 ３ 前記油不透過層が、非磁性のカバーで形成さ
れたものである特許請求の範囲第１項記載の立軸
形回転電機の固定子鉄心。[Scope of Claims] 1. A bearing oil tank is provided in the upper part, and segment-shaped thin electromagnetic steel plates are laminated in the axial direction in the lower part, and the electromagnetic steel plates have a predetermined shape in the circumferential direction on the inner circumferential side thereof. In a stator core for a vertical shaft rotating electrical machine, the stator core has a plurality of slots arranged at intervals of A stator core for a vertical shaft type rotating electric machine, characterized in that near an axial end of an inner circumferential surface of the stator core, the stepped portion and the groove portion are covered with an oil-impermeable layer. 2. The stator core for a vertical shaft rotating electric machine according to claim 1, wherein the oil-impermeable layer is made of resin. 3. A stator core for a vertical shaft rotating electric machine according to claim 1, wherein the oil-impermeable layer is formed of a non-magnetic cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21754485A JPS6277841A (en) | 1985-09-30 | 1985-09-30 | Stator core of vertical-shaft rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21754485A JPS6277841A (en) | 1985-09-30 | 1985-09-30 | Stator core of vertical-shaft rotary electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6277841A JPS6277841A (en) | 1987-04-10 |
| JPH056415B2 true JPH056415B2 (en) | 1993-01-26 |
Family
ID=16705918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21754485A Granted JPS6277841A (en) | 1985-09-30 | 1985-09-30 | Stator core of vertical-shaft rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6277841A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627838B2 (en) * | 1972-12-19 | 1981-06-27 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627838U (en) * | 1979-08-09 | 1981-03-16 | ||
| JPS5782847U (en) * | 1980-11-05 | 1982-05-22 |
-
1985
- 1985-09-30 JP JP21754485A patent/JPS6277841A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627838B2 (en) * | 1972-12-19 | 1981-06-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6277841A (en) | 1987-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |