JPH0426343A - Bearing cooling device for horizontal water turbine generator - Google Patents
Bearing cooling device for horizontal water turbine generatorInfo
- Publication number
- JPH0426343A JPH0426343A JP2127707A JP12770790A JPH0426343A JP H0426343 A JPH0426343 A JP H0426343A JP 2127707 A JP2127707 A JP 2127707A JP 12770790 A JP12770790 A JP 12770790A JP H0426343 A JPH0426343 A JP H0426343A
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- water
- cooling chamber
- pipe
- chamber
- 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 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000000498 cooling water Substances 0.000 claims abstract description 22
- 238000010248 power generation Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 206010013647 Drowning Diseases 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
この発明は、横軸水車発電機の回転軸にヒートパイプを
形成した軸受冷却装置に関する。The present invention relates to a bearing cooling device in which a heat pipe is formed on the rotating shaft of a horizontal-shaft water turbine generator.
従来の横軸水車発電機の回転軸ヒートパイプを利用した
横軸冷却装置は、回転軸の内部を中空として作動液を封
入し、軸受側を発熱部としランナの蒸気空間を冷却部と
するヒートパイプを形成している。ジャーナル軸受及び
スラスト軸受で発熱した熱の大部分は回転軸ヒートパイ
プへ熱が流入する。
第３図は従来の横軸水車発電機の軸受冷却装置の断面図
である。図において、ランナ１と直結する回転軸２の中
空部に作動液を封入してランナの蒸気空間８を冷却部と
し、図示されない軸受部を発熱部とするヒートバイブを
形成している。冷却部には、ランナー１の背部から水を
導く冷却水管３と、冷却水管３に連通して冷却部付近の
回転軸２の外周に配置された冷却室６を備え、冷却室６
の水が洩れないように軸封７で冷却水を封止している。
冷却室６の下部に排水口を有し、排水口から水を排出し
ている。A horizontal shaft cooling device that utilizes the rotating shaft heat pipe of a conventional horizontal shaft water turbine generator has a hollow rotating shaft that is filled with working fluid, with the bearing side serving as the heat generating part and the runner's steam space serving as the cooling part. forming a pipe. Most of the heat generated by the journal bearing and thrust bearing flows into the rotating shaft heat pipe. FIG. 3 is a sectional view of a conventional bearing cooling device for a horizontal-shaft water turbine generator. In the figure, a heat vibe is formed in which a working fluid is sealed in a hollow part of a rotating shaft 2 directly connected to a runner 1, a steam space 8 of the runner is used as a cooling part, and a bearing part (not shown) is used as a heat generating part. The cooling section includes a cooling water pipe 3 that leads water from the back of the runner 1, and a cooling chamber 6 that communicates with the cooling water pipe 3 and is arranged on the outer periphery of the rotating shaft 2 near the cooling section.
The cooling water is sealed with a shaft seal 7 to prevent water from leaking. A drain is provided at the bottom of the cooling chamber 6, and water is discharged from the drain.
しかし、従来、冷却室６は回転軸２の周りに配置された
単一の空間であったため、水車への水の流量が多い間は
ランナｌの背部から導入する水が多いので、冷却室は水
で充満されるが、水車を駆動する水が減少すると冷却水
管３を経て導入される水が減少して、冷却室６の水量が
減り回転軸２が露出し、ヒートパイプの冷却性能が低下
するという問題があった。
この発明は、水車へ流れる水量が低下した場合でも、回
転軸の外周の冷却室へ水を充満させ、ヒートパイプの冷
却能力を高める軸受冷却装置を提供することを目的とす
る。However, conventionally, the cooling chamber 6 was a single space arranged around the rotating shaft 2, so when the flow of water to the water turbine was large, a lot of water was introduced from the back of the runner l, so the cooling chamber It is filled with water, but when the water that drives the water turbine decreases, the water introduced through the cooling water pipe 3 decreases, the amount of water in the cooling chamber 6 decreases, and the rotating shaft 2 is exposed, reducing the cooling performance of the heat pipe. There was a problem. An object of the present invention is to provide a bearing cooling device that fills a cooling chamber on the outer periphery of a rotating shaft with water and increases the cooling capacity of a heat pipe even when the amount of water flowing to a water turbine decreases.
上記目的は、ランチと直結する回転軸がケーシング外部
のジャーナル軸受及びスラスト軸受により水平に支承さ
れ、前記回転軸の外周に前記ジャーナル軸受及びスラス
ト軸受を発熱部とし、水路に露出するランチ側通水部を
冷却部とするヒートパイプを形成し、前記冷却部付近の
回転軸の外周を被う冷却室に、前記ランナの背部から冷
却水管を介して水を導いて前記回転軸を冷却する横軸水
車発電機において、前記冷却水管に連通して前記回転軸
の外周を被い上部に切欠を有する冷却室内管により仕切
られた内部冷却室と、この冷却室内管の外周を被い下部
に排水口を有する冷却室外管により仕切られた外部冷却
室とからなる冷却室を備えることによって達成される。The above purpose is to have a rotating shaft directly connected to the launch horizontally supported by a journal bearing and a thrust bearing outside the casing, and using the journal bearing and thrust bearing as a heat generating part on the outer periphery of the rotating shaft to allow water to pass through the launch side exposed to the waterway. A horizontal shaft that forms a heat pipe with a cooling section and that cools the rotating shaft by guiding water from the back of the runner through a cooling water pipe to a cooling chamber that covers the outer periphery of the rotating shaft near the cooling section. In a water turbine generator, an internal cooling chamber is partitioned by a cooling chamber tube that communicates with the cooling water pipe, covers the outer periphery of the rotating shaft, and has a notch in the upper part, and a drainage port at the bottom that covers the outer periphery of the cooling chamber tube. This is achieved by providing a cooling chamber consisting of an external cooling chamber partitioned by an external cooling chamber tube.
この発明によれば、冷却水管に連通して回転軸の外周を
被い上部に切欠を有する冷却室内管により仕切られた内
部冷却室と、この冷却室内管の外周を被い下部に排水口
を有する冷却室外管により仕切られた外部冷却室とから
なる冷却室を備えるので、冷却水管を経て導かれる冷却
水は、先ず内部冷却室に入り、ここで溢れた水は上部の
切欠がら外部冷却室を通り、冷却水外管の下部の排水口
から排出される。従って水車運転中にランナの背部から
冷却室へ導かれる水は内部冷却室に充満しており、水車
の水の流量が減っても常に内部冷却室内の回転軸は水中
に浸っているので、ヒートパイプの冷却部を冷却するこ
とができる。According to this invention, there is an internal cooling chamber partitioned by a cooling chamber tube that communicates with the cooling water pipe, covers the outer periphery of the rotating shaft, and has a notch in the upper part, and a drain port that covers the outer periphery of the cooling chamber tube and has a drain port in the lower part. The cooling chamber has a cooling chamber consisting of an external cooling chamber separated by an external cooling pipe, so the cooling water led through the cooling water pipe first enters the internal cooling chamber, and the overflowing water flows through the notch at the top to the external cooling chamber. and is discharged from the drain port at the bottom of the cooling water outer pipe. Therefore, the water guided from the back of the runner to the cooling chamber during turbine operation fills the internal cooling chamber, and even if the water flow rate of the turbine decreases, the rotating shaft in the internal cooling chamber is always immersed in water, which prevents heat. The cooling part of the pipe can be cooled.
以下図に基づいてこの発明の詳細な説明する。
第１図はこの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■■断面図である
。第１図において、第３図と同じ部位は同じ符号を付し
ている。
第１図において、ランナ１と直結する回転軸２がケーシ
ングを貫通し、回転軸２を図示されない軸受スタンドに
収容されたジャーナル軸受及びスラスト軸受により水平
に支持し、回転軸２の他端には図示されない発電機を結
合している。第１図において、回転軸２の中空部に作動
液を封入してランナの蒸気空間８を冷却部とし、図示さ
れない軸受部を発熱部とするヒートパイプを形成してい
る。
この発明による軸受冷却装置は、ヒートパイプの冷却部
に、ランナ１の背部から水を導く２零の冷却水管３と、
冷却水管３に連通して回転軸２の外周を被い上部に切欠
９を有する冷却室内管４により仕切られた内部冷却室６
ａと、この冷却室内管５の外周を被い下部に排水口１０
を有する冷却室外管５により仕切られた外部冷却室６ｂ
とから構成する冷却室６を備えた。
水車の運転中にランナｌの背部から冷却水管３を経て導
いた水は、先ず内部冷却室６ａに充満し、上部の切欠９
から溢れた水は外部冷却室６ｂを通って冷却室外管５の
下部の排水口１０から排出される。
従って、水車を駆動する水の流量が減少しても、内部冷
却室６ａ内には常に水が充満していて、この水によって
回転軸２を冷却し、ヒートパイプの冷却部を冷却するこ
とができる。The present invention will be described in detail below based on the drawings. FIG. 1 is a cross-sectional view of a bearing cooling device for a horizontal-shaft water turbine generator according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of FIG. In FIG. 1, the same parts as in FIG. 3 are given the same reference numerals. In FIG. 1, a rotating shaft 2 directly connected to a runner 1 passes through the casing, and the rotating shaft 2 is supported horizontally by a journal bearing and a thrust bearing housed in a bearing stand (not shown). A generator (not shown) is coupled thereto. In FIG. 1, a heat pipe is formed in which a working fluid is sealed in the hollow part of the rotary shaft 2, a steam space 8 of the runner is used as a cooling part, and a bearing part (not shown) is used as a heat generating part. The bearing cooling device according to the present invention includes two cooling water pipes 3 that lead water from the back of the runner 1 to the cooling part of the heat pipe;
An internal cooling chamber 6 that is connected to the cooling water pipe 3 and partitioned by a cooling chamber tube 4 that covers the outer periphery of the rotating shaft 2 and has a notch 9 in the upper part.
a, and a drain port 10 at the bottom covering the outer periphery of the cooling chamber pipe 5.
An external cooling chamber 6b partitioned by an external cooling chamber pipe 5 having
A cooling chamber 6 is provided. During operation of the water turbine, water introduced from the back of the runner l through the cooling water pipe 3 first fills the internal cooling chamber 6a, and then enters the notch 9 at the top.
The overflowing water passes through the external cooling chamber 6b and is discharged from the drain port 10 at the bottom of the cooling chamber outer pipe 5. Therefore, even if the flow rate of water that drives the water turbine decreases, the internal cooling chamber 6a is always filled with water, and this water can cool the rotating shaft 2 and the cooling part of the heat pipe. can.
この発明にれば、冷却水管によって水を導く冷却室を内
部冷却室と外部冷却室とからなる二重構造とし、内部冷
却室を通って溢れた水を外部冷却室を通って外部へ排出
するので、水車運転中にう余
」According to this invention, the cooling chamber into which water is guided by the cooling water pipe has a double structure consisting of an internal cooling chamber and an external cooling chamber, and water overflowing through the internal cooling chamber is discharged to the outside through the external cooling chamber. So, while I was driving the water turbine, I ended up drowning.''
Claims (1)
ナル軸受及びスラスト軸受により水平に支承され、前記
回転軸の外周に前記ジャーナル軸受及びスラスト軸受を
発熱部とし、水路に露出するランナ側通水部を冷却部と
するヒートパイプを形成し、前記冷却部付近の回転軸の
外周を被う冷却室に、前記ランナーの背部から冷却水管
を介して水を導いて前記回転軸を冷却する横軸水車発電
機において、前記冷却水管に連通して前記回転軸の外周
を被い上部に切欠を有する冷却室内管により仕切られた
内部冷却室と、この冷却室内管の外周を被い下部に排水
口を有する冷却室外管により仕切られた外部冷却室とか
らなる冷却室を備えることを特徴とする水車発電機の軸
受冷却装置。1) A rotating shaft directly connected to the runner is horizontally supported by a journal bearing and a thrust bearing outside the casing, and the journal bearing and thrust bearing are used as heat generating parts on the outer periphery of the rotating shaft, and a runner-side water passage part exposed to the waterway is provided. A horizontal shaft water turbine power generation system in which a heat pipe is formed as a cooling section, and water is guided from the back of the runner through a cooling water pipe to a cooling chamber that covers the outer periphery of the rotating shaft near the cooling section to cool the rotating shaft. In the machine, an internal cooling chamber is connected to the cooling water pipe and is partitioned by a cooling chamber tube that covers the outer periphery of the rotating shaft and has a notch in the upper part, and has a drain port at the lower part that covers the outer periphery of the cooling chamber tube. A bearing cooling device for a water turbine generator, characterized by comprising a cooling chamber consisting of an external cooling chamber partitioned by an external cooling chamber pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2127707A JP2684819B2 (en) | 1990-05-17 | 1990-05-17 | Bearing cooling system for horizontal axis turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2127707A JP2684819B2 (en) | 1990-05-17 | 1990-05-17 | Bearing cooling system for horizontal axis turbine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0426343A true JPH0426343A (en) | 1992-01-29 |
| JP2684819B2 JP2684819B2 (en) | 1997-12-03 |
Family
ID=14966722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2127707A Expired - Lifetime JP2684819B2 (en) | 1990-05-17 | 1990-05-17 | Bearing cooling system for horizontal axis turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2684819B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5876140A (en) * | 1995-06-22 | 1999-03-02 | Kabushiki Kaisha Pilot | Cap device |
-
1990
- 1990-05-17 JP JP2127707A patent/JP2684819B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5876140A (en) * | 1995-06-22 | 1999-03-02 | Kabushiki Kaisha Pilot | Cap device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2684819B2 (en) | 1997-12-03 |
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