JPH07310643A - Main bearing cooling device for water turbine - Google Patents
Main bearing cooling device for water turbineInfo
- Publication number
- JPH07310643A JPH07310643A JP6122070A JP12207094A JPH07310643A JP H07310643 A JPH07310643 A JP H07310643A JP 6122070 A JP6122070 A JP 6122070A JP 12207094 A JP12207094 A JP 12207094A JP H07310643 A JPH07310643 A JP H07310643A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- oil tank
- main shaft
- main
- bearing
- 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.)
- Withdrawn
Links
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
【０００１】[0001]
【産業上の利用分野】本発明は、水車特にフランシス水
車やデリア水車等の立軸水車における主軸受の冷却装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for a main bearing of a turbine, particularly a vertical axis turbine such as Francis turbine or Delia turbine.
【０００２】[0002]
【従来の技術】フランシス水車、デリア水車等の立軸水
車の主軸受には、ジャーナル軸受とセグメンタル軸受と
の両者があり、いずれの場合も、潤滑油槽内に冷却器を
自蔵したタイプと、軸受メタルを直接冷却するジャケッ
トタイプとの２種がある。2. Description of the Related Art Main bearings of vertical shaft turbines such as Francis turbines and Delia turbines have both journal bearings and segmental bearings. In both cases, a type in which a cooler is self-contained in a lubricating oil tank, There are two types, a jacket type that directly cools the bearing metal.
【０００３】図２は従来の冷却器自蔵ジャーナル軸受を
示し、水車の主軸１を支持するジャーナル軸受２は潤滑
油槽３内の潤滑油４中に浸漬されて、浸し潤滑される。
そして、潤滑油槽３内には例えばスパイラル状の冷却管
５から成る冷却器が設置され、潤滑油４は冷却管５内を
流れる冷却水により冷却されるようになっている。FIG. 2 shows a conventional cooler self-contained journal bearing, in which a journal bearing 2 supporting a main shaft 1 of a water turbine is dipped in a lubricating oil 4 in a lubricating oil tank 3 to be dipped and lubricated.
In the lubricating oil tank 3, a cooler including, for example, a spiral cooling pipe 5 is installed, and the lubricating oil 4 is cooled by cooling water flowing in the cooling pipe 5.
【０００４】一方、図３は従来の水ジャケット式ジャー
ナル軸受を示し、水車の主軸１を支持するジャーナル軸
受２は潤滑油槽３内の潤滑油４中に浸漬されている構成
は図２と同様であるが、軸受ハウジング６内に水ジャケ
ット７から成る冷却器が設けられ、この水ジャケット７
内に冷却水を供給することによって軸受メタルが直接冷
却されるようになっている。On the other hand, FIG. 3 shows a conventional water jacket type journal bearing, in which the journal bearing 2 supporting the main shaft 1 of the water turbine is immersed in the lubricating oil 4 in the lubricating oil tank 3 in the same structure as in FIG. In the bearing housing 6, a cooler consisting of a water jacket 7 is provided.
The bearing metal is directly cooled by supplying cooling water inside.
【０００５】なお、図２及び図３に示したジャーナル軸
受はいずれも潤滑油自蔵形であって、潤滑ポンプを有し
ないものであり、潤滑油４の循環は次のようにして行わ
れる。すなわち、ジャーナル軸受２の内径側に設けられ
た油溝８が潤滑油４の吸い上げ口となり、主軸１の回転
による遠心力成分により潤滑油４を矢印で示すように吸
い上げ、この吸い上げられた潤滑油がそれから軸受カバ
ー９の内部を通って、ジャーナル軸受２に設けられた返
油口１０から潤滑油槽３内に戻される。The journal bearings shown in FIG. 2 and FIG. 3 are both self-contained lubricating oils and do not have a lubricating pump, and the lubricating oil 4 is circulated as follows. That is, the oil groove 8 provided on the inner diameter side of the journal bearing 2 serves as a suction port for the lubricating oil 4, and the centrifugal force component due to the rotation of the main shaft 1 sucks up the lubricating oil 4 as indicated by an arrow, and the sucked lubricating oil 4 Then, it is returned to the inside of the lubricating oil tank 3 through the inside of the bearing cover 9 from the oil return port 10 provided in the journal bearing 2.
【０００６】[0006]
【発明が解決しようとする課題】以上述べた従来の水車
主軸受冷却装置は、いずれも、冷却管又は水ジャケット
から成る冷却器とこの冷却器に冷却水を送る冷却水ポン
プを含む複雑な冷却水システムを必要とし、コスト高を
招くと共に保守点検費を増大させている。All of the conventional turbine main bearing cooling devices described above include a complex cooling device including a cooler composed of a cooling pipe or a water jacket and a cooling water pump for sending cooling water to the cooler. A water system is required, resulting in high costs and maintenance and inspection costs.
【０００７】本発明は、このような従来技術の課題を解
決するためになされたもので、複雑で高価な冷却水シス
テムを必要としない水車の主軸受冷却装置を提供するこ
とを目的とする。The present invention has been made in order to solve the above problems of the prior art, and an object of the present invention is to provide a main bearing cooling device for a water turbine which does not require a complicated and expensive cooling water system.
【０００８】[0008]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明は、水車の主軸を支持して、潤滑油槽内の
潤滑油中に浸漬されている主軸受の冷却装置において、
前記主軸に一体に設けられた送風ファンと、前記潤滑油
槽に一体に設けられて前記送風ファンによる送気によっ
て冷却される放熱フィンと、前記潤滑油槽内の潤滑油を
主軸と主軸受との間の隙間を介して循環させる循環ポン
プとを包含する。In order to solve the above-mentioned problems, the present invention provides a cooling device for a main bearing which supports a main shaft of a water turbine and is immersed in lubricating oil in a lubricating oil tank,
Between the main shaft and the main bearing, a blower fan provided integrally with the main shaft, a radiating fin provided integrally with the lubricating oil tank and cooled by air sent by the blower fan, and the lubricating oil in the lubricant oil tank is provided between the main shaft and the main bearing. And a circulation pump that circulates through the gap.
【０００９】[0009]
【作用】上記の手段によれば、強制空気冷却システムが
構成され、主軸受と一体になる潤滑油槽は放熱フィンを
介して主軸の回転による送風ファンからの送気により空
気冷却され、またこの空気冷却により油槽内の潤滑油も
間接的に冷却される。そして、潤滑油槽内の潤滑油は循
環ポンプにより主軸と主軸受との間の隙間を介して循環
する。According to the above means, the forced air cooling system is constituted, and the lubricating oil tank integrated with the main bearing is air-cooled by the air blown from the blower fan by the rotation of the main shaft through the radiation fins. The cooling also indirectly cools the lubricating oil in the oil tank. The lubricating oil in the lubricating oil tank is circulated by the circulation pump through the gap between the main shaft and the main bearing.
【００１０】[0010]
【実施例】以下図１を参照して、本発明の実施例につい
て詳細に説明する。図１は本発明に係る水車の主軸受冷
却装置の一実施例を示す断面図である。Embodiments of the present invention will be described in detail below with reference to FIG. FIG. 1 is a sectional view showing an embodiment of a main bearing cooling device for a water turbine according to the present invention.
【００１１】図１において、水車の主軸１は主軸受、本
実施例ではジャーナル軸受２によって支持され、このジ
ャーナル軸受２は潤滑油槽３、本実施例では主軸１にボ
ルトなどの適当な手段により一体に設けられて潤滑油槽
３の一部を構成する下部油溜め２０内の潤滑油４中に浸
漬されている。そして、水車の主軸１には送風ファン１
１が一体に設けられていると共に、ジャーナル軸受２を
浸漬する潤滑油槽３には送風通路を限定する囲い１２を
有する放熱フィン１３が一体に設けられ、強制空気冷却
システムが構成されている。In FIG. 1, a main shaft 1 of a water turbine is supported by a main bearing, which is a journal bearing 2 in this embodiment. The journal bearing 2 is integrated with a lubricating oil tank 3, in this embodiment, the main shaft 1 by a suitable means such as a bolt. Is immersed in the lubricating oil 4 in the lower oil sump 20 which is provided in the lower oil sump 20 and constitutes a part of the lubricating oil tank 3. And a blower fan 1 is attached to the main shaft 1 of the water turbine.
1 is integrally provided, and the lubricating oil tank 3 in which the journal bearing 2 is immersed is integrally provided with a radiation fin 13 having an enclosure 12 that defines a ventilation passage, thereby forming a forced air cooling system.
【００１２】したがって、水車の主軸１が回転すること
により、この主軸１と一体になる送風フィン１１が空気
１４を吸い込んで放熱フィン１３の囲い１２内に送気す
ることによって、ジャーナル軸受２と一体になる潤滑油
槽３が放熱フィン１３を介して空気冷却され、またこの
空気冷却により油槽３内の潤滑油４も間接的に冷却され
る。この場合、本実施例によれば、管状送風通路１５を
通して潤滑油槽３の外周側に設けた放熱フィン１３にも
送風してから外部へ放出させるようにして、冷却効果を
高めるようにしている。Therefore, when the main shaft 1 of the water turbine rotates, the blower fin 11 integrated with the main shaft 1 sucks in the air 14 and sends the air 14 into the enclosure 12 of the heat radiating fin 13, so that it is integrated with the journal bearing 2. The lubricating oil tank 3 is cooled by air through the radiation fins 13, and the air cooling also indirectly cools the lubricating oil 4 in the oil tank 3. In this case, according to the present embodiment, the cooling effect is enhanced by blowing air to the heat radiation fins 13 provided on the outer peripheral side of the lubricating oil tank 3 through the tubular air blowing passages 15 and then discharging the air to the outside.
【００１３】また、本発明によれば、潤滑油槽３内の潤
滑油４は主軸１とジャーナル軸受２との間の隙間を介し
て循環ポンプ１６により循環できるようになっている。
この循環ポンプ１６は通常常用と予備用との２台（１台
は図示を省略している）が設置され、また潤滑油ループ
１７の途中には循環ポンプ１６の吐出量（循環油量）を
管理するための保安用の油流リレー１８が設置されてい
る。Further, according to the present invention, the lubricating oil 4 in the lubricating oil tank 3 can be circulated by the circulation pump 16 through the gap between the main shaft 1 and the journal bearing 2.
Two circulating pumps 16 are usually installed, one for regular use and one for spare (one is not shown), and the discharge amount (circulating oil amount) of the circulating pump 16 is provided in the middle of the lubricating oil loop 17. An oil flow relay 18 for security for management is installed.
【００１４】更に、ジャーナル軸受２の上部にはジャー
ナル軸受２の摺動部への潤滑油供給を全周にわたって均
一にするための上部油溜め１９が設けられ、潤滑油４は
主軸１とジャーナル軸受２との間の隙間を全周均一にし
て矢印の方向に流れてジャーナル軸受２を潤滑し、その
後主軸１に設けられて潤滑油槽３の一部を構成する下部
油溜め２０で一旦溜められてから（これは起動時の初期
潤滑のためである）、潤滑油槽３へ環流する。また、過
剰油は上部油溜め１９内の堰２１を越え、穴２２からジ
ャーナル軸受２をバイパスして直接潤滑油槽３へ流入す
る。Further, an upper oil sump 19 is provided above the journal bearing 2 to make the lubricating oil supply to the sliding portion of the journal bearing 2 uniform over the entire circumference. The lubricating oil 4 is used as the lubricating oil 4 and the journal bearing. 2 and lubricates the journal bearing 2 by making the gap between the two and the entire circumference uniform and then temporarily storing it in the lower oil sump 20 which is provided on the main shaft 1 and constitutes a part of the lubricating oil tank 3. (This is because of the initial lubrication at the time of start-up) and returns to the lubricating oil tank 3. Further, the excess oil passes over the weir 21 in the upper oil sump 19, bypasses the journal bearing 2 from the hole 22, and directly flows into the lubricating oil tank 3.
【００１５】[0015]
【発明の効果】以上述べたように、本発明によれば、水
車の主軸に一体に設けた送風フィンと潤滑油槽に一体に
設けた放熱フィンとにより、強制空気冷却システムが構
成され、主軸受と一体になる潤滑油槽は放熱フィンを介
して主軸の回転による送風ファンからの送気により空気
冷却され、またこの空気冷却により油槽内の潤滑油も間
接的に冷却されるので、複雑で高価な冷却水システムが
不要となり、コスト及び保守費の低減を図ることができ
る。As described above, according to the present invention, the forced air cooling system is constituted by the blower fins integrally provided on the main shaft of the water turbine and the radiation fins integrally provided on the lubricating oil tank, and the main bearing The lubricating oil tank that is integrated with the air is cooled by the air blown from the blower fan by the rotation of the main shaft via the radiation fins, and the lubricating oil in the oil tank is also indirectly cooled by this air cooling, which is complicated and expensive. A cooling water system is not required, and costs and maintenance costs can be reduced.
【図１】本発明に係る水車の主軸受冷却装置の一実施例
を示す断面図である。FIG. 1 is a sectional view showing an embodiment of a main bearing cooling device for a water turbine according to the present invention.
【図２】従来の水車主軸受冷却装置の一例を示す断面図
である。FIG. 2 is a sectional view showing an example of a conventional turbine main bearing cooling device.
【図３】従来の水車主軸受冷却装置の他の例を示す断面
図である。FIG. 3 is a sectional view showing another example of a conventional turbine main bearing cooling device.
１ 主軸 ２ ジャーナル軸受（主軸受） ３ 潤滑油槽 ４ 潤滑油 １１ 送風ファン １２ 囲い １３ 放熱フィン １４ 空気 １５ 管状送風通路 １６ 循環ポンプ １７ 潤滑油ループ １８ 油流リレー １９ 上部油溜め ２０ 下部油溜め ２１ 堰 ２２ 穴 1 Spindle 2 Journal Bearing (Main Bearing) 3 Lubricating Oil Tank 4 Lubricating Oil 11 Blower Fan 12 Enclosure 13 Radiating Fins 14 Air 15 Tubular Blower Passage 16 Circulation Pump 17 Lubricating Oil Loop 18 Oil Flow Relay 19 Upper Oil Sump 20 Lower Oil Sump 21 Weir 22 holes
Claims (1)
油中に浸漬されている主軸受の冷却装置において、前記
主軸に一体に設けられた送風ファンと、前記潤滑油槽に
一体に設けられて前記送風ファンによる送気によって冷
却される放熱フィンと、前記潤滑油槽内の潤滑油を主軸
と主軸受との間の隙間を介して循環させる循環ポンプと
を包含することを特徴とする水車の主軸受冷却装置。1. A cooling device for a main bearing which supports a main shaft of a water turbine and is immersed in a lubricating oil in a lubricating oil tank, wherein a blower fan integrally provided on the main shaft and the lubricating oil tank are integrated. Radiation fins provided and cooled by air blown by the blower fan, and a circulation pump for circulating the lubricating oil in the lubricating oil tank through the gap between the main shaft and the main bearing are included. Cooling system for main bearings of water turbines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6122070A JPH07310643A (en) | 1994-05-12 | 1994-05-12 | Main bearing cooling device for water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6122070A JPH07310643A (en) | 1994-05-12 | 1994-05-12 | Main bearing cooling device for water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07310643A true JPH07310643A (en) | 1995-11-28 |
Family
ID=14826900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6122070A Withdrawn JPH07310643A (en) | 1994-05-12 | 1994-05-12 | Main bearing cooling device for water turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07310643A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453946C (en) * | 2006-05-08 | 2009-01-21 | 杭州金舟电炉有限公司 | Air cooling type oil path self circulation cooling system |
| CN107762710A (en) * | 2017-10-16 | 2018-03-06 | 哈尔滨电机厂有限责任公司 | Bearing of hydraulic generator external circulation cooling system with self-diagnosing function |
| CN107939847A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨电机厂有限责任公司 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
| CN108443476A (en) * | 2018-04-20 | 2018-08-24 | 盐城市金洲机械制造有限公司 | A kind of reducer gear lubricating and cooling and cooling means |
-
1994
- 1994-05-12 JP JP6122070A patent/JPH07310643A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453946C (en) * | 2006-05-08 | 2009-01-21 | 杭州金舟电炉有限公司 | Air cooling type oil path self circulation cooling system |
| CN107762710A (en) * | 2017-10-16 | 2018-03-06 | 哈尔滨电机厂有限责任公司 | Bearing of hydraulic generator external circulation cooling system with self-diagnosing function |
| CN107939847A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨电机厂有限责任公司 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
| CN108443476A (en) * | 2018-04-20 | 2018-08-24 | 盐城市金洲机械制造有限公司 | A kind of reducer gear lubricating and cooling and cooling means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010731 |