JPH0341219A - Bearing cooling device - Google Patents
Bearing cooling deviceInfo
- Publication number
- JPH0341219A JPH0341219A JP17547789A JP17547789A JPH0341219A JP H0341219 A JPH0341219 A JP H0341219A JP 17547789 A JP17547789 A JP 17547789A JP 17547789 A JP17547789 A JP 17547789A JP H0341219 A JPH0341219 A JP H0341219A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- lubricating oil
- bearing
- oil tank
- water
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000010687 lubricating oil Substances 0.000 claims abstract description 38
- 230000017525 heat dissipation Effects 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000003921 oil Substances 0.000 abstract description 6
- 239000003507 refrigerant Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、軸受の冷却装置に係り、特に、水車及びポン
プ水車などの低速大形軸受に好適な軸受冷却装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bearing cooling device, and particularly to a bearing cooling device suitable for low-speed large bearings such as water turbines and pump water turbines.
従来の軸受部の冷却装置は、発電用水、いわゆる、河川
水を取水し、専用の給排水設備を介して潤滑油槽内に通
水冷却をするシステムが主であった。Conventional cooling devices for bearings have mainly been systems that take power generation water, so-called river water, and cool it by passing it into a lubricating oil tank through a dedicated water supply and drainage facility.
この方法は、特公昭63−163095号公報に記載の
ように、軸受冷却管を油槽内に設け、軸受のすべり面に
発生した摩擦熱を潤滑油から冷却管に伝達させ、冷却管
の冷却水を介して、外部に放熱する構造のものである。This method, as described in Japanese Patent Publication No. 63-163095, installs a bearing cooling pipe in an oil tank, transfers the frictional heat generated on the sliding surface of the bearing from the lubricating oil to the cooling pipe, and cools the cooling pipe. It has a structure that radiates heat to the outside through.
河川水中には、落葉、枯木層、ビニール屑、土砂等が含
まれており、これら不要物を除去及び、浄化するために
、ストレーナをはじめ、これに必要な保護装置、並びに
、通水のための配管設備や、通水量調整管理の為の諸設
備から成っていた。又、潤滑油槽内には、限られた狭い
スペースの内に、好適に放熱作用をさせるように、複数
個の通水用パイプを備えた複雑な構造になっていた。River water contains fallen leaves, dead wood, plastic debris, earth and sand, etc. In order to remove and purify these unnecessary substances, strainers and other protective devices are installed, as well as water flow. It consisted of piping equipment and various equipment for regulating and managing water flow. Furthermore, the lubricating oil tank has a complicated structure including a plurality of water pipes to appropriately dissipate heat within a limited narrow space.
上記従来技術は、軸受部の冷却作用を施す為の専用の大
掛りな給排水設備を必要とし、又軸受部潤滑油槽内には
複雑な冷却管が配置される構造であるため、例えば、取
水中の異物が給排水設備に詰まって、主機を停止させた
り、その解除作業に手間がかかったり、潤滑油槽内の冷
却水管に水滴がつき潤滑油に混入する等、保守・点検・
管理面に難点があった。The above conventional technology requires dedicated large-scale water supply and drainage equipment to cool the bearing, and has a structure in which complicated cooling pipes are arranged inside the bearing lubricating oil tank. Foreign objects can clog the water supply and drainage equipment, causing the main engine to stop or take time to clear the blockage, or water droplets can form in the cooling water pipes in the lubricating oil tank and get mixed into the lubricating oil, causing problems such as maintenance, inspection, and
There were some difficulties in management.
本発明の目的は、これら保守点検管理を一切不要とする
ことを目的としており、従って、無保守にするためには
、保守をする対称物を無くすることであるので、従来の
専用給排水設備システム及び、潤滑油槽内の冷却水管構
造を廃止することで、設備システムの簡素化を図り、且
つ、安価で、高品質の軸受潤滑機構を提供することにあ
る。The purpose of the present invention is to eliminate the need for these maintenance inspections and management. Therefore, in order to eliminate the need for maintenance, it is necessary to eliminate the objects to be maintained. Another object of the present invention is to simplify the equipment system by eliminating the cooling water pipe structure in the lubricating oil tank, and to provide an inexpensive, high-quality bearing lubrication mechanism.
上記目的を達成するために、横軸小容量水車のスラスト
軸受の冷却に回転ヒートパイプを利用した自冷式軸受方
式が採用実用化され、好結果を得ていることに着目し、
この優れた熱輸送特性を持つヒートパイプを潤滑油槽と
水車ケーシング等の流水面間に連結し、軸受の摩擦熱に
より温められた潤滑油槽内の熱をヒートパイプにより水
車ケーシング等の内部の流水に移送して、放熱するよう
にしたものである。さらに放熱効果を向上させる為に、
ヒートパイプを複数個設置したものである。In order to achieve the above objectives, we focused on the fact that a self-cooling bearing system that uses rotating heat pipes to cool the thrust bearings of horizontal shaft small-capacity water turbines has been put into practical use and has achieved good results.
This heat pipe with excellent heat transport properties is connected between the lubricating oil tank and the flowing water surface of the water turbine casing, etc., and the heat in the lubricating oil tank heated by the frictional heat of the bearing is transferred to the flowing water inside the water turbine casing etc. using the heat pipe. It is designed to transport and radiate heat. In order to further improve the heat dissipation effect,
It has multiple heat pipes installed.
水、もしくは、フロン等の冷媒が圧力を調整されたパイ
プに封入されているヒートパイプの作動原理を、第4図
に示す。即ち、加熱された熱は、ヒートパイプ1の加熱
部1hに吸熱される。パイプに封入されている冷媒14
はこの熱量により沸騰して蒸気16となって、温度の低
い部位である放熱部1Qに移動する。この放熱部IQ部
は放熱に好適な状態になっているので、ここに到達した
蒸気は冷却されて凝縮液18となり、加熱部1h側に戻
る。この吸熱、放熱の繰返し作用により冷却される。FIG. 4 shows the operating principle of a heat pipe in which a refrigerant such as water or fluorocarbon is sealed in a pressure-regulated pipe. That is, the heated heat is absorbed by the heating portion 1h of the heat pipe 1. Refrigerant 14 sealed in the pipe
is boiled by this amount of heat, becomes steam 16, and moves to the heat radiation section 1Q, which is a lower temperature region. Since this heat dissipation section IQ section is in a state suitable for heat dissipation, the steam that has reached this section is cooled and becomes condensed liquid 18, and returns to the heating section 1h side. Cooling is achieved by this repeated action of heat absorption and heat release.
このように、熱輸送特性、自冷能力を持つヒートパイプ
を潤滑油槽と水車ケーシング等の流水部に連結すること
により、主軸と軸受間に発生した熱は潤滑油、ヒートパ
イプ、ケーシング等内の冷水を介して、容易に放熱する
ことができる。この熱輸送により、従来の軸受部の冷却
用の大掛りな給排水設備を不要とすることができる。In this way, by connecting a heat pipe with heat transport properties and self-cooling ability to a lubricating oil tank and a flowing water part such as a water turbine casing, the heat generated between the main shaft and bearings is transferred to the lubricating oil, heat pipe, casing, etc. Heat can be easily dissipated through cold water. This heat transport makes it possible to eliminate the need for conventional large-scale water supply and drainage equipment for cooling the bearing.
以下、本発明の一実施例を第1図から第6図により説明
する。第1図に示すように、ヒートパイプ1は潤滑油槽
3の外壁を通して、最も吸熱効果のある位置に挿入し、
その反対側は水車ケーシング2の外壁を通して流水に接
し、最も放熱効果のでる位置に接続される。取付部の一
実施例として第4図のようにバッキング7、バッキング
押え8゜締付ボルト9から成り、それぞれ潤滑油並びに
流水の外部洩れを防ぐ構造になる。潤滑油面の高さは水
車主軸5と水車軸受40回転摩擦熱を吸熱するのに好適
な位置に注油される。そこで、主機が運転に入ると、潤
滑油槽3内では、軸受損失Qbと撹拌損失Qcから成る
発熱量Qが発生する。この発熱は潤滑油外壁を通して一
部大気へ放熱されるが、大部分は油槽内の潤滑油に蓄積
される。さらに、潤滑油槽内の温度が上昇すると、ヒー
トパイプlに吸熱され、パイプ内に封入されている冷媒
が沸騰して、熱輸送作用を及ぼす。ここで、Kを熱通過
率、Twを潤滑温度、To冷却部温度、Aを接触面積、
Nをパイプ数とすると、ヒートパイプの放熱量qは、q
” K (Tw −To) A Nで表わされるから
、大きな放熱効果を得るには、潤滑油温度Twと冷却部
温度Toの差が大きく、また、熱通過率が大きい程良い
ことが判る。従って、本実施例によると、冷却部をケー
シングの流水に接触させる構造をとっているため、温度
差と熱通過率が大きく冷却効果は顕著である。さらに吸
熱部で沸騰した蒸気が移動しやすく、又、放熱部に到達
した蒸気や冷却されて凝縮液として吸熱部に返還されや
すいように好適な状態に放熱部を若干上り勾配にヒート
パイプを取り付けると熱伝達損失を小さくでき、より放
熱効果を高めることができる。第2図は、上述の実施例
の変形例である。冷却水の取水口を設けた水車上カバー
6には取水パイブ10が取付けられ、この取水パイプ1
0には冷却水量調整のためのバルブ11が設けられてい
る。又、取水パイプ10の上部には、適当な量の冷却水
が確保され、且つ、適量が流出できる水受↓2が設けら
れている。水受12の上部には冷却水放流口が設けられ
、放流パイプ13が水車上カバー6の放流に好適な位置
まで接続される。尚、水受上2の冷却水放流口の下部に
は潤滑油槽3から接続されているヒートパイプ上を第4
図の要領で接続される。主機が起動運転された後の冷却
作用は前述の通りである。第2図の実施例では、ヒート
パイプ1の長さが短くできるので、熱伝達損失を少なく
することができ、さらに、大きな冷却効果を得ることが
できる。An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. As shown in FIG. 1, the heat pipe 1 is inserted through the outer wall of the lubricating oil tank 3 at the position where it has the most heat absorption effect, and
The opposite side is in contact with running water through the outer wall of the water turbine casing 2, and is connected at a position where the heat dissipation effect is most effective. As shown in FIG. 4, one embodiment of the mounting part consists of a backing 7, a backing presser 8° and a tightening bolt 9, each of which has a structure to prevent leakage of lubricating oil and running water to the outside. The lubricating oil level is placed at a position suitable for absorbing rotational friction heat between the main shaft 5 and the bearing 40 of the water turbine. Therefore, when the main engine starts operating, a calorific value Q consisting of bearing loss Qb and stirring loss Qc is generated in the lubricating oil tank 3. A portion of this heat is radiated to the atmosphere through the lubricating oil outer wall, but most of it is accumulated in the lubricating oil within the oil tank. Further, when the temperature inside the lubricating oil tank rises, heat is absorbed by the heat pipe 1, and the refrigerant sealed within the pipe boils, exerting a heat transport effect. Here, K is the heat transfer rate, Tw is the lubrication temperature, To is the cooling part temperature, A is the contact area,
When N is the number of pipes, the heat radiation amount q of the heat pipe is q
" K (Tw - To) A N, it can be seen that in order to obtain a large heat dissipation effect, the larger the difference between the lubricating oil temperature Tw and the cooling part temperature To, and the larger the heat transfer rate, the better. Therefore, According to this embodiment, since the cooling part is in contact with the flowing water of the casing, the temperature difference and heat transfer rate are large, and the cooling effect is remarkable.Furthermore, the steam boiled in the heat absorption part is easy to move, In addition, heat transfer loss can be reduced by installing a heat pipe at a slightly upward slope on the heat dissipation section in a suitable state so that the steam that reaches the heat dissipation section is easily returned to the heat absorption section as a cooled condensate. Fig. 2 shows a modification of the above-described embodiment.A water intake pipe 10 is attached to the water wheel top cover 6 provided with a cooling water intake.
0 is provided with a valve 11 for adjusting the amount of cooling water. Further, a water receiver ↓2 is provided at the upper part of the water intake pipe 10 to ensure an appropriate amount of cooling water and from which an appropriate amount can flow out. A cooling water discharge port is provided in the upper part of the water receiver 12, and a discharge pipe 13 is connected to a position suitable for discharge from the water turbine cover 6. In addition, at the bottom of the cooling water outlet of the upper water receiver 2, there is a fourth pipe connected to the heat pipe connected from the lubricating oil tank 3.
Connect as shown in the diagram. The cooling effect after the main engine is started is as described above. In the embodiment shown in FIG. 2, since the length of the heat pipe 1 can be shortened, heat transfer loss can be reduced, and furthermore, a large cooling effect can be obtained.
また、第3図に本発明をカブラン水車に採用した一例を
示す。潤滑油槽3の外壁と水車上カバー6の間をヒート
パイプ1かつら抜いた構造となっており、潤滑油、並び
に、流水の外部洩れ防止構造は前述の第4図のものと同
じである。これにより潤滑油槽3内の潤滑油と水車上カ
バー6の付近の流水との間にヒートパイプlを用いて熱
交換を行い、潤滑油槽3内の潤滑油を冷却する。第6図
はヒートパイプ構造の変形例である。受熱側には好適な
吸熱効果を得るべく大きさの吸熱タンクエ9を設け、こ
の吸熱タンクエ9の上部には冷媒沸騰後の蒸気移送用の
パイプ1uが接続される。Further, FIG. 3 shows an example in which the present invention is applied to a Kabran water turbine. The structure is such that the heat pipe 1 is removed between the outer wall of the lubricating oil tank 3 and the water wheel top cover 6, and the structure for preventing external leakage of lubricating oil and running water is the same as that shown in FIG. 4 described above. Thereby, heat exchange is performed between the lubricating oil in the lubricating oil tank 3 and the flowing water near the water wheel upper cover 6 using the heat pipe 1, and the lubricating oil in the lubricating oil tank 3 is cooled. FIG. 6 shows a modification of the heat pipe structure. On the heat-receiving side, a heat-absorbing tank 9 having a size suitable for obtaining a suitable heat-absorbing effect is provided, and a pipe 1u for transferring vapor after boiling of the refrigerant is connected to the upper part of the heat-absorbing tank 9.
放熱側には好適な放熱効果を得るべく大きさの放熱タン
ク20の上部に凝縮液移送パイプldが接続される。放
熱タンク20の下部には、外部冷却水により強制冷却さ
れた凝縮液が吸熱タンク19に循環できるように凝縮液
移送パイプ↓dを接続する。この様なヒートパイプ構造
にすると、蒸気と凝縮液の通路が独立しているため、流
路損失を小さくすることができるので、さらに大きな冷
却効果が得られる。ヒートパイプの取付方法は第1図な
いし第3図の場合と同様である。On the heat dissipation side, a condensate transfer pipe ld is connected to the upper part of the heat dissipation tank 20, which is sized to obtain a suitable heat dissipation effect. A condensate transfer pipe ↓d is connected to the lower part of the heat radiation tank 20 so that the condensate that has been forcibly cooled by external cooling water can be circulated to the heat absorption tank 19. With such a heat pipe structure, since the passages for steam and condensate are independent, passage loss can be reduced, and a greater cooling effect can be obtained. The method of attaching the heat pipe is the same as that shown in FIGS. 1 to 3.
本発明によれば、ヒートパイプ単独で軸受部の冷却作用
を好適に実施できるので、大掛りむ軸受冷却専用の給排
水設備が不要となり、設備費用が削減でき、安価な水力
機械設備を提供することができる。According to the present invention, since the cooling effect of the bearing part can be suitably carried out by the heat pipe alone, there is no need for large-scale water supply and drainage equipment dedicated to cooling the bearing, and the equipment cost can be reduced, thereby providing an inexpensive hydraulic mechanical equipment. I can do it.
第1図は、本発明の一実施例の断面図、第2図第3図は
本発明の他の実施例の断面図、第4図はヒートパイプ接
続状況を示す断面図、第5図はヒートパイプの熱輸送原
理の説明図、第6図は、さらに熱伝導効果を上げるため
のヒートパイプの説明図である。
1・・・ヒートパイプ、2・・・水車ケーシング、3・
・・潤滑油槽、4・・・水車軸受、5・・・水車主軸、
6・・・水車上カバー、7・・・バッキング、8・・・
バッキング押え9・・・締付ボルト。FIG. 1 is a cross-sectional view of one embodiment of the present invention, FIG. 2, FIG. 3 is a cross-sectional view of another embodiment of the present invention, FIG. 4 is a cross-sectional view showing a heat pipe connection situation, and FIG. FIG. 6, an explanatory diagram of the heat transport principle of a heat pipe, is an explanatory diagram of a heat pipe for further increasing the heat conduction effect. 1...Heat pipe, 2...Water wheel casing, 3.
...Lubricating oil tank, 4...Water wheel bearing, 5...Water wheel main shaft,
6...Water wheel top cover, 7...Backing, 8...
Backing presser foot 9...tightening bolt.
Claims (1)
記軸受を好適状態に固定することのできる軸受支えと、
前記回転軸と前記軸受間の摩擦熱を放熱させる潤滑油と
、これを貯蔵する潤滑油槽とから成る水力機械の軸受構
造部に於いて、前記潤滑油槽内と水車ケーシングもしく
は水車カバー等の流水面間に、放熱が最適になるように
、ヒートパイプを単数、もしくは複数個設置し、従来の
軸受潤滑油を冷却するための冷却水管、及び、これらの
給排水設備を不要とし、前記潤滑油槽の独自の冷却機能
を備えたことを特徴とする軸受冷却装置。1. A bearing for smoothly stopping the behavior of a rotating shaft, and a bearing support capable of fixing the bearing in a suitable state;
In a bearing structure of a hydraulic machine consisting of a lubricating oil that dissipates frictional heat between the rotating shaft and the bearing, and a lubricating oil tank that stores the lubricating oil, the inside of the lubricating oil tank and a flowing water surface of a water turbine casing or a water turbine cover, etc. In between, one or more heat pipes are installed to optimize heat dissipation, eliminating the need for conventional cooling water pipes for cooling bearing lubricating oil and water supply and drainage equipment for these, and making the lubricating oil tank unique. A bearing cooling device characterized by having a cooling function.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17547789A JPH0341219A (en) | 1989-07-10 | 1989-07-10 | Bearing cooling device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17547789A JPH0341219A (en) | 1989-07-10 | 1989-07-10 | Bearing cooling device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0341219A true JPH0341219A (en) | 1991-02-21 |
Family
ID=15996736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17547789A Pending JPH0341219A (en) | 1989-07-10 | 1989-07-10 | Bearing cooling device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0341219A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20000063761A (en) * | 2000-08-02 | 2000-11-06 | 정태숙 | Variable Shirt of Multi Function Purpose |
KR20020078456A (en) * | 2001-04-11 | 2002-10-18 | 현대자동차주식회사 | Bolt member for vehicle |
KR100664873B1 (en) * | 2004-06-21 | 2007-01-04 | 고지 가토 | Shirts having neck size adjusting function |
CN101793293A (en) * | 2010-03-30 | 2010-08-04 | 上海申科滑动轴承有限公司 | Cooling structure of sliding bearing |
-
1989
- 1989-07-10 JP JP17547789A patent/JPH0341219A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20000063761A (en) * | 2000-08-02 | 2000-11-06 | 정태숙 | Variable Shirt of Multi Function Purpose |
KR20020078456A (en) * | 2001-04-11 | 2002-10-18 | 현대자동차주식회사 | Bolt member for vehicle |
KR100664873B1 (en) * | 2004-06-21 | 2007-01-04 | 고지 가토 | Shirts having neck size adjusting function |
CN101793293A (en) * | 2010-03-30 | 2010-08-04 | 上海申科滑动轴承有限公司 | Cooling structure of sliding bearing |
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