JPS62255579A - Bearing cooling device for horizontal shaft hydraulic turbine generator - Google Patents
Bearing cooling device for horizontal shaft hydraulic turbine generatorInfo
- Publication number
- JPS62255579A JPS62255579A JP61100080A JP10008086A JPS62255579A JP S62255579 A JPS62255579 A JP S62255579A JP 61100080 A JP61100080 A JP 61100080A JP 10008086 A JP10008086 A JP 10008086A JP S62255579 A JPS62255579 A JP S62255579A
- Authority
- JP
- Japan
- Prior art keywords
- thrust
- bearing
- heat
- thrust collar
- cooling device
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000012530 fluid Substances 0.000 abstract description 8
- 230000001788 irregular Effects 0.000 abstract 3
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000807025 Nilus Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Hydraulic Turbines (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
この発明は、横軸水軍発電機のスラスト拗受の冷却に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] This invention relates to cooling of a thrust bearing of a horizontal axis water force generator.
ｉａ６図は従来例による横軸水車発電機の回転軸ヒート
パイプを用いた軸受冷却装置の断面図で、第６（ロ）に
おいて、ランナー６と直結する回転軸４がケーシング１
５の外部のジャーナルｌｉｄ受ｌおよびスラスト軸受３
により水平に支承され、回転軸４の内部にジャーナル軸
受ｌおよびスラスト軸受３を発熱部とし吸出管１８円の
水路に露出するランナー６を凝縮部とする回転・細ヒー
トパイプ７を形成している。スラストカラーｎはスラス
トカラー３で情方向に支持され、ジャーナル軸受１およ
びスラスト軸受３は軸受スタンド２に収容され潤滑油５
を封入している。８はＬ１転・鴻ヒートパイプの蒸Ｉ：
ＦＣＪ窒闇、１６はスピードリング、１７はガイドベー
ン、加は回転軸ヒートパイプの作動液、沼は地面である
。Figure ia6 is a sectional view of a bearing cooling device using a rotary shaft heat pipe for a horizontal shaft water turbine generator according to a conventional example.
5 external journal lid bearings and thrust bearings 3
A rotating thin heat pipe 7 is formed inside the rotating shaft 4, with the journal bearing 1 and the thrust bearing 3 serving as heat generating parts, and the runner 6 exposed to the 18-circle water passage of the suction pipe serving as a condensing part. . The thrust collar n is supported in the direction by the thrust collar 3, and the journal bearing 1 and the thrust bearing 3 are housed in the bearing stand 2, and the lubricating oil 5
is included. 8 is L1 turn/Koji heat pipe steam I:
FCJ nitrogen, 16 is the speed ring, 17 is the guide vane, addition is the working fluid of the rotating shaft heat pipe, and swamp is the ground.
従来の軸受冷却装置では、スラストカラーｎで発生した
熱の大部分は回転軸ヒートパイプ７へ流入するが、その
際
■スラストカラーの発熱部から回転軸ヒートバイブの詔
ぬ９闇８までの熱伝導距離が長い。In the conventional bearing cooling device, most of the heat generated in the thrust collar n flows into the rotating shaft heat pipe 7, but in this case, the heat from the heat generating part of the thrust collar to the rotating shaft heat vibrator Conduction distance is long.
■スラストカラーｎ内の熱伝導及びヒートパイプ蒸発面
での熱流束が大ぎい。■The heat conduction inside the thrust collar n and the heat flux on the heat pipe evaporation surface are large.
■スラストカラー四は肉厚を通常一様とするため、摩擦
により発熱するスラストカラーの表面から回転中心部へ
向うにしたがい熱伝導面積が小さくなるとともに、蒸発
面の面積も小さくなる。■Since the thickness of the thrust collar 4 is usually uniform, the heat conduction area decreases from the surface of the thrust collar that generates heat due to friction toward the center of rotation, and the area of the evaporation surface also decreases.
以上の理由により、発熱部からヒートパイプまでの熱抵
抗の増大とヒートパイプ蒸発面での熱流束が大きくなる
ことによる熱抵抗の増大により温度差が大きくなるので
、軸受部の温度が許容値以上となるため出力約５００ｋ
Ｗ以上の横軸水車発を機の軸受冷却装置への適用は困難
であった。For the above reasons, the temperature difference increases due to the increase in thermal resistance from the heat generating part to the heat pipe and the increase in thermal resistance due to the increase in heat flux at the heat pipe evaporation surface, so the temperature of the bearing part becomes higher than the allowable value. Therefore, the output is about 500k
It has been difficult to apply this method to bearing cooling systems powered by horizontal shaft water turbines of W or larger.
軸受部の温度を許容値以下とする方法には、発熱部から
ヒートパイプ凝縮部までの温匿差を低減すること、冷却
部分での伝熱面積を太きくし液膜を薄くして熱伝達率を
萬めて温度差を低減する方法がある。The method of keeping the temperature of the bearing part below the allowable value is to reduce the temperature difference from the heat generating part to the heat pipe condensing part, and to increase the heat transfer coefficient by increasing the heat transfer area in the cooling part and making the liquid film thinner. There are ways to reduce the temperature difference.
この発明は、横軸水工発電機のスラスト軸受の伝熱面積
を増大させ、回転軸ヒートパイプ凝縮部での熱抵抗を低
減し、軸受温度を低減させることを目的とする。The present invention aims to increase the heat transfer area of the thrust bearing of a horizontal shaft hydraulic power generator, reduce the thermal resistance in the rotating shaft heat pipe condensing section, and reduce the bearing temperature.
この発明によれば、上記目的は、ジャーナル軸受および
スラスト軸受により水平に支承されランナーと直結する
回転軸の内部に回転軸ヒートパイプを形成する横軸水車
発電機の、前記スラスト軸受のスラストカラーに中９部
を備え中空部を前記回転軸ヒートパイプの発熱部の蒸気
空間に連通させるとともに、中空部の表面に複数の凹凸
部を設けることによって達成される。According to the present invention, the above object is achieved by providing a thrust collar of a thrust bearing of a horizontal shaft water turbine generator in which a rotating shaft heat pipe is formed inside a rotating shaft that is horizontally supported by a journal bearing and a thrust bearing and is directly connected to a runner. This is achieved by providing a hollow part with a hollow part, communicating the hollow part with the vapor space of the heat generating part of the rotary shaft heat pipe, and providing a plurality of uneven parts on the surface of the hollow part.
第１図は本発明の実施例による横軸水車発電機の軸受冷
却装置の断面図、第２図は第１図の軸受冷却装置のスラ
ストカラーを示す詳細図、第３図は第２図のＡ−Ａ方向
断面図、第４図は本発明の他の実施例による軸受冷却装
置のスラストカラーを示す詳細図、第５図は第４図のＢ
−Ｂ方向断面図である。以下図面に基いて説明する。FIG. 1 is a sectional view of a bearing cooling device for a horizontal shaft water turbine generator according to an embodiment of the present invention, FIG. 2 is a detailed view showing the thrust collar of the bearing cooling device of FIG. 1, and FIG. 4 is a detailed view showing a thrust collar of a bearing cooling device according to another embodiment of the present invention, and FIG.
-B direction sectional view. This will be explained below based on the drawings.
＠１図において、ラン、叛ｔと直結する回転軸４がケー
シングを貫通し、回転軸４を軸受スタンド２に収容され
たジャーナル軸受ｌおよびスラスト軸受３により水平に
支持し１回転軸の他端には図示されない発電機を結合し
ている。軸受スタンド２には潤滑油５を封入しである。In Figure 1, a rotating shaft 4 that is directly connected to the run and the rotating shaft passes through the casing, and the rotating shaft 4 is supported horizontally by a journal bearing l and a thrust bearing 3 housed in a bearing stand 2, and the other end of the rotating shaft is A generator (not shown) is connected to the system. The bearing stand 2 is filled with lubricating oil 5.
第１図において１５はケーシング、１６はスピードリン
グ、１７はガイドベーン、１８は吸出管である。回転軸
４を中空とし作動液加を封入しジャーナル軸受１および
スラスト軸受３を発熱部とし、水路に露出するランナー
Ｇを凝縮部とする回転軸ヒートパイプ７におい℃、スラ
スト軸受３のスラストカラーｎに中”２％９を設けこの
中空部９を回転軸ヒートパイプの蒸も空間に連通させる
とともに中空部の表面に複数の凹凸部を設けている。In FIG. 1, 15 is a casing, 16 is a speed ring, 17 is a guide vane, and 18 is a suction pipe. The rotary shaft heat pipe 7 has a hollow rotary shaft 4 and a hydraulic fluid sealed therein, the journal bearing 1 and the thrust bearing 3 as heat generating parts, and the runner G exposed to the waterway as a condensing part. The hollow part 9 is provided with a hollow part 9 which communicates with the steam of the rotary shaft heat pipe, and a plurality of uneven parts are provided on the surface of the hollow part.
第２図および第３図において、スラストカラーｎの中空
部９は第３図に示すように断面がドーナツ形状をしてい
て、スラストカラーの中空部９を８本の円筒状の作動流
体通路１９により蒸楢空間８と連通していて、Ｕは中空
部密閉用ふたである。In FIGS. 2 and 3, the hollow portion 9 of the thrust collar n has a donut-shaped cross section as shown in FIG. It communicates with the steaming space 8 by U, and U is a lid for sealing the hollow part.
スラストカラーρの中空部９の表面に複数の凹凸部２１
を回転軸４に対し同心的に設けている。A plurality of uneven portions 21 on the surface of the hollow portion 9 of the thrust collar ρ
are provided concentrically with respect to the rotating shaft 4.
第４図および第５図において、第２図および第３図と同
じ部位は同じ番号を付してあり、スラストカラーρには
円筒状の中空部９が放射状に８本設けられそれぞれ円筒
状の作動流体通路１９により回転軸ヒートパイプの蒸も
空間８に連通していて、スラストカラー乙の中空部９の
表面には複数の環状の凹凸部２１を設けている。In Figs. 4 and 5, the same parts as in Figs. 2 and 3 are given the same numbers, and the thrust collar ρ has eight cylindrical hollow parts 9 arranged radially. The steam of the rotary shaft heat pipe is also communicated with the space 8 through a working fluid passage 19, and a plurality of annular uneven portions 21 are provided on the surface of the hollow portion 9 of the thrust collar B.
この様に構成したスラスト軸受３とスラストカラーｎと
がスラスト力を受けて摩擦抵抗により発生した熱は、ス
ラストカラーｎ内を熱伝導により中空部乙の表面の凹凸
部２】に伝えられる。この凹凸部で作動液が加熱され蒸
発すると、この蒸気は中空部９から作動流体通路１９を
通って圧力の低い発熱部の蒸気空間８へ流れさらに圧力
の低いランナー側へ移動する。ランナー側へ移動した蒸
気は冷却部の壁面（液膜）に接して凝縮して液となる。The heat generated by frictional resistance when the thrust bearing 3 and the thrust collar n configured in this manner receive a thrust force is transmitted to the uneven portion 2 on the surface of the hollow portion B by thermal conduction inside the thrust collar n. When the working fluid is heated and evaporated in the uneven portion, the vapor flows from the hollow portion 9 through the working fluid passage 19 to the vapor space 8 of the heat generating portion where the pressure is low, and further moves to the runner side where the pressure is low. The steam that has moved to the runner side comes into contact with the wall surface (liquid film) of the cooling section and condenses to become liquid.
この液は遠心力によりスラストカラー側へ戻される。作
動液は常時スラストカラー中空部が満される量を真空封
入する。スラスト軸受３の固定部の熱は、潤滑油５に伝
えられさらに回転軸ヒートパイプ７の表面に伝達されラ
ンナー側へ放熱するとともに、軸受スタンド２の外表面
から大気に放熱する。スラストカラーｎの中空部９の表
面の凹凸部２１はフィンの役割をする。This liquid is returned to the thrust collar side by centrifugal force. The hydraulic fluid is vacuum sealed in an amount that constantly fills the hollow part of the thrust collar. The heat of the fixed portion of the thrust bearing 3 is transmitted to the lubricating oil 5 and further to the surface of the rotating shaft heat pipe 7, where the heat is radiated to the runner side, and the heat is radiated from the outer surface of the bearing stand 2 to the atmosphere. The uneven portions 21 on the surface of the hollow portion 9 of the thrust collar n function as fins.
この発明によれば横軸回転電機のスラストカラーρに発
生する熱をスラストカラーの肉厚を伝って熱伝導し、さ
らに伝熱面積の大きい中空部を熱伝導し、中空部表面の
凹凸部により伝熱面積を平面の２〜４倍に増大できるこ
とにより、熱流束を小さくし蒸発部の熱抵抗を大幅に低
減できる。これによってスラストカラ一部の温度差を小
さくできるようになって、出力５００ｋＷ以上の横軸水
車発電機または横軸ポンプなどのスラスト軸受冷却を可
能とし、冷却性能を高めることができる。According to this invention, the heat generated in the thrust collar ρ of the horizontal axis rotating electric machine is conducted through the thickness of the thrust collar, and further through the hollow part where the heat transfer area is large, and the heat is conducted through the uneven part on the surface of the hollow part. Since the heat transfer area can be increased to 2 to 4 times that of a flat surface, the heat flux can be reduced and the thermal resistance of the evaporation section can be significantly reduced. This makes it possible to reduce the temperature difference in a part of the thrust collar, making it possible to cool the thrust bearings of horizontal shaft water turbine generators or horizontal shaft pumps with an output of 500 kW or more, and improve cooling performance.
第１図は本発明の実施例による横軸水車発電機の軸受冷
却装置の断面図、第２図は第１図の軸受冷却装置のスラ
ストカラーを示す詳細図、第３図は第２図のスラストカ
ラーのＡ−Ａ方向断面図、第４図は本発明の他の実施例
による軸受冷却装置のスラストカラーを示す詳細図、第
５図は第４図のスラストカラーのＢ−Ｂ方向断面図、第
６図は従来例による横軸水車発電機の軸受冷却装置の断
面図である。
ｌ：ジャーナル軸受、３ニスラスト軸受、４：回転軸、
６：ランナー、７：回転軸ヒートパイプ、８：蒸坂空間
、９：中空部、２１：凹凸部、２２ニスラストカラー。FIG. 1 is a sectional view of a bearing cooling device for a horizontal shaft water turbine generator according to an embodiment of the present invention, FIG. 2 is a detailed view showing the thrust collar of the bearing cooling device of FIG. 1, and FIG. 4 is a detailed view showing a thrust collar of a bearing cooling device according to another embodiment of the present invention; FIG. 5 is a sectional view along B-B of the thrust collar shown in FIG. 4. , FIG. 6 is a cross-sectional view of a conventional bearing cooling device for a horizontal shaft water turbine generator. l: Journal bearing, 3 Nilus thrust bearing, 4: Rotating shaft,
6: Runner, 7: Rotating shaft heat pipe, 8: Steam slope space, 9: Hollow part, 21: Uneven part, 22 Nilast color.
Claims (1)
ーナル軸受およびスラスト軸受により水平に支承され、
前記回転軸の内部に前記ジャーナル軸受およびスラスト
軸受を発熱部とし、水路に露出するランナーを凝縮部と
する回転軸ヒートパイプを形成する横軸水車発電機にお
いて、前記スラスト軸受のスラストカラーに中空部を備
え前記中空部を前記回転軸ヒートパイプの発熱部の蒸気
空間に連通させるとともに、前記中空部の表面に複数の
凹凸部を設けたことを特徴とする横軸水車発電機の軸受
冷却装置。 ２）特許請求の範囲第１項記載の横軸水車発電機の軸受
冷却装置において、スラストカラーの中空部の凹凸部は
回転軸に対し同心的に配置されていることを特徴とする
横軸水車発電機の軸受冷却装置。[Claims] 1) A rotating shaft directly connected to the runner is supported horizontally by a journal bearing and a thrust bearing outside the casing,
A horizontal shaft water turbine generator in which a rotary shaft heat pipe is formed inside the rotary shaft using the journal bearing and the thrust bearing as a heat generating part and a runner exposed to a waterway as a condensing part, wherein a hollow part is provided in the thrust collar of the thrust bearing. A bearing cooling device for a horizontal shaft water turbine generator, characterized in that the hollow part is communicated with a steam space of a heat generating part of the rotary shaft heat pipe, and a plurality of uneven parts are provided on the surface of the hollow part. 2) A bearing cooling device for a horizontal shaft water turbine generator as set forth in claim 1, wherein the uneven portion of the hollow portion of the thrust collar is arranged concentrically with respect to the rotating shaft. Generator bearing cooling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61100080A JPS62255579A (en) | 1986-04-30 | 1986-04-30 | Bearing cooling device for horizontal shaft hydraulic turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61100080A JPS62255579A (en) | 1986-04-30 | 1986-04-30 | Bearing cooling device for horizontal shaft hydraulic turbine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62255579A true JPS62255579A (en) | 1987-11-07 |
| JPH0447149B2 JPH0447149B2 (en) | 1992-08-03 |
Family
ID=14264463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61100080A Granted JPS62255579A (en) | 1986-04-30 | 1986-04-30 | Bearing cooling device for horizontal shaft hydraulic turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62255579A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101187727B1 (en) | 2009-12-31 | 2012-10-04 | 한국에너지기술연구원 | Organic fluid turbine generator preventing penetration of operating fluid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62251474A (en) * | 1986-04-25 | 1987-11-02 | Fuji Electric Co Ltd | Bearing cooling device for horizontal shaft turbine generator |
-
1986
- 1986-04-30 JP JP61100080A patent/JPS62255579A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62251474A (en) * | 1986-04-25 | 1987-11-02 | Fuji Electric Co Ltd | Bearing cooling device for horizontal shaft turbine generator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101187727B1 (en) | 2009-12-31 | 2012-10-04 | 한국에너지기술연구원 | Organic fluid turbine generator preventing penetration of operating fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0447149B2 (en) | 1992-08-03 |
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