JPS5933767B2 - Radial bearing device for water turbine main shaft - Google Patents
Radial bearing device for water turbine main shaftInfo
- Publication number
- JPS5933767B2 JPS5933767B2 JP56038578A JP3857881A JPS5933767B2 JP S5933767 B2 JPS5933767 B2 JP S5933767B2 JP 56038578 A JP56038578 A JP 56038578A JP 3857881 A JP3857881 A JP 3857881A JP S5933767 B2 JPS5933767 B2 JP S5933767B2
- Authority
- JP
- Japan
- Prior art keywords
- water turbine
- main shaft
- bearing
- turbine housing
- bearing holder
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/06—Bearing arrangements
-
- 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
Description
【発明の詳細な説明】
本発明は、水車用主軸を、水車ハウジングに固定された
軸受保持体により支持した型式のラジアル軸受装置に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radial bearing device of the type in which a main shaft for a water turbine is supported by a bearing holder fixed to a water turbine housing.
公知のこの種軸受装置においては、軸受保持体は、概ね
円筒状をなしており、かつその外周には、スリーブを固
着じてあり、それをもつて、水車のハウジングに直接固
着されている。In known bearing devices of this type, the bearing holder has a generally cylindrical shape and has a sleeve fixed to its outer periphery, with which it is directly fixed to the housing of the water turbine.
水車ハウジングは、通例、上側フランジ部分と下側フラ
ンジ部分とからなる環状の箱形構造を有し、かつ、折り
返し部分が、内部に設けられており、前記上側フランジ
部分を介して、軸受保持体と固着される。The water turbine housing usually has an annular box-shaped structure consisting of an upper flange part and a lower flange part, and a folded part is provided inside. It is fixed.
一方、軸受保持体の内周面には、例えば、円周方向に分
割された支持体にすベリ軸受を支持して構成したラジア
ル軸受が設けられている。On the other hand, on the inner circumferential surface of the bearing holder, a radial bearing is provided, for example, by supporting a flat bearing on a support body divided in the circumferential direction.
水車ハウジングが変形すると、その変形は、軸受保持体
に伝達されるが、その変形量は比較的僅かであるため、
従来は、設計上では無視されてきた。When the water turbine housing deforms, the deformation is transmitted to the bearing holder, but since the amount of deformation is relatively small,
Traditionally, this has been ignored in the design.
しかし、構造が大型となり、それに伴つて、水車ハウジ
ングに加わる水圧力が増大するためにひきおこされる荷
重及び変形量が問題にされるようになつてきた。However, as the structure has become larger, the load and deformation caused by the increased water pressure applied to the water turbine housing have become a problem.
特に、水車ハウジングには折り返し部分があるため、水
圧力がかかると、該水車ハウジングの中心方向の端部、
すなわち軸受保持体との接続部が、該折り返し部分を介
して、半径方向にかつ外方に押し広げられることとなり
、しかも、この水車ハウジングの変形に加えて、軸受か
ら支持体を介して、ラジアル荷重が加わるので、該軸受
保持体は外方に押し上げられがちとなり、そのために、
軸受保持体とハウジングとの接続部は、特別に剛固であ
ることを要した。本発明の目的とするところは、ラジア
ル荷重に対して剛固であり、しかも、水車ハウジングか
ら伝達される力に対しては柔軟性を発揮することができ
、そのため、過度の負荷が発生したり、過大な変形が生
じないようにした軸受装置を提供することにある。In particular, since the water turbine housing has a folded part, when water pressure is applied, the end of the water turbine housing toward the center,
In other words, the connection part with the bearing holder is forced outward in the radial direction through the folded part, and in addition to this deformation of the water turbine housing, the connection part with the bearing holder is expanded radially outward from the bearing through the support body. Due to the applied load, the bearing holder tends to be pushed outward, so that
The connection between the bearing holder and the housing was required to be particularly rigid. The purpose of the present invention is to be rigid against radial loads, yet flexible against the forces transmitted from the water turbine housing, so that excessive loads are not generated. The object of the present invention is to provide a bearing device that prevents excessive deformation.
上記した目的は、本発明によれば、軸受装置を、次のよ
うな構成とすることにより達成される。According to the present invention, the above object is achieved by providing a bearing device with the following configuration.
すなわち、軸受保持体を、ラジアル荷重に対しては比較
的剛固なものとし、かつ該軸受保持体に、薄肉とした管
状の頚部を設け、その自由端部を、環状円板を介して、
水車のハウジングに固着することにより達成される。従
つて、前記頚部は、軸受保持体における、羽根車に面す
る側に形成されていることになる。That is, the bearing holder is made relatively rigid against radial loads, and the bearing holder is provided with a thin tubular neck, the free end of which is connected via an annular disk.
This is achieved by fixing it to the housing of the water wheel. Therefore, the neck portion is formed on the side of the bearing holder that faces the impeller.
この軸受保持体は、横方向の荷重に対しては、剛固であ
り、強い抵抗力を発生するが、水車ハウジングから伝達
される回転体称的な外力に対しては柔軟性を有し、弾力
性を有する肉薄の環状頚部が、変形して水車ハウジング
の変形を有効に吸収するので、軸受保持体が、好ましく
ない程度にまで押し広げられるのが防止される。また、
その結果、軸受保持体を水車ハウジングに連結する部材
も、それほど剛固であることを要しなくなる。This bearing holder is rigid and generates a strong resistance against lateral loads, but is flexible against rotational external forces transmitted from the water turbine housing. The elastic, thin-walled annular neck deforms and effectively absorbs deformations of the turbine housing, thereby preventing the bearing holder from being forced apart to an undesirable extent. Also,
As a result, the member connecting the bearing holder to the water turbine housing does not need to be so rigid.
本発明に基づくあヘサ適実施例によれば、前記頚部の他
端と水車のハウシングとの間に、それらを連結するため
の環状円板が、着脱可能に取り付けられている。According to a preferred embodiment of the waterwheel according to the present invention, an annular disc for connecting the other end of the neck and the housing of the water turbine is detachably attached.
この環状円板は、水車ハウジングと同軸をなしている。
水車ハウジングは、水圧により変形するが、その軸線方
向の中間領域内において、半径方向の変位が最小となる
。This annular disk is coaxial with the water turbine housing.
The water turbine housing is deformed by water pressure, but the radial displacement is minimal in its axially intermediate region.
従つて、頚部及び水車ハウジングを、前記中間領域内に
おいて着脱可能に固定すると、ボルト等の固定部材の横
方向についての強度は、さほど大きくなくてもよい。以
下、本発明を、その好適実施例について、添付の図面を
参照しつつ詳しく説明する。Therefore, when the neck portion and the water turbine housing are removably fixed within the intermediate region, the strength of the fixing member such as a bolt in the lateral direction does not need to be very large. DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, with reference to preferred embodiments thereof.
第１図は、水車の主軸１及び、それを軸支する公知の軸
受２とを縦断して示している。FIG. 1 shows a main shaft 1 of a water turbine and a known bearing 2 that supports the main shaft 1 in a longitudinal section.
軸受２は、円周方向に分割された支持体３により支持さ
れ、該支持体３は、リング状の軸受保持体４の内面に支
持されている。The bearing 2 is supported by a support 3 divided in the circumferential direction, and the support 3 is supported on the inner surface of a ring-shaped bearing holder 4.
軸受保持体４は、比較的剛固ｔ（上端部５と、それと一
体的に連結された薄肉の環状体からなる頚部６とを有し
ている。The bearing holder 4 has a relatively rigid upper end portion 5 and a neck portion 6 formed of a thin annular body integrally connected to the upper end portion 5.
箱形をなす水車ハウジング７に固着された環状円板８に
は、前記頚部６の下端が、ボルト９により固着されてい
る。The lower end of the neck portion 6 is fixed by a bolt 9 to an annular disk 8 fixed to a box-shaped water turbine housing 7 .
第２図は、水圧力及びラジアル荷重により、本発明によ
る軸受装置の軸受保持体４、及び水車ハウジング７に生
ずる変形を示す。FIG. 2 shows the deformation that occurs in the bearing holder 4 and the water turbine housing 7 of the bearing device according to the invention due to hydraulic pressure and radial loads.
水圧力は図面上の矢印１５で示すように、水車ハウジン
グ７の下側フランジ部分２２に加わる。Water pressure is applied to the lower flange portion 22 of the water turbine housing 7, as indicated by arrow 15 on the drawing.
これにより、上側フランジ部分２１及び下側フランジ部
分２２は、それぞれ、図面上の矢印１９及び２０で示す
方向に、半径方向の変位が生じるが、前記両フランジ部
分２１，２２の中間領域において、半径方向の変位は、
最小となる。環状円板８は、前記中間領域内に含まれる
、図面において点線２３で示す平面上に配置されるので
、頚部６と環状円板８とを接続するボルト９にかかる剪
断力は、先行技術の場合に比して、非常に小さくなる。As a result, the upper flange portion 21 and the lower flange portion 22 are displaced in the radial direction in the directions indicated by arrows 19 and 20 in the drawing, respectively. The displacement in the direction is
Minimum. Since the annular disc 8 is arranged on a plane included in said intermediate region and indicated by the dotted line 23 in the drawing, the shearing force applied to the bolt 9 connecting the neck 6 and the annular disc 8 is different from that of the prior art. It is very small compared to the case.
頚部６は、その形状の故に弾力性を有しており、第２図
に示すように、軸受保持体４の側の端部を中心として、
中心方向に僅少に曲折して、水車ハウジング７の変形を
吸収する。The neck 6 has elasticity due to its shape, and as shown in FIG.
It is slightly bent toward the center to absorb deformation of the water turbine housing 7.
しかも、軸受保持体４は、各支持体３を介して加わるラ
ジアル荷重に対して、剛固であるので、その内周面は、
水圧力の有無にかかわらず、図面上の矢印２５で示すよ
うに、概ね同一の位置にあり、かつ過度の負荷、又は過
大な変形が生じることはない。Moreover, since the bearing holder 4 is rigid against the radial load applied via each support 3, its inner peripheral surface is
Regardless of the presence or absence of water pressure, as shown by the arrow 25 on the drawing, the position is generally the same, and no excessive load or excessive deformation occurs.
第１図は、本発明に係わるラジアル軸受装置の一好適実
施例を示す縦断面図である。
第２図は、第１図の実施例において、水圧力による変形
を示す縦断面図である。１・・・・・・主軸、２・・・
・・・軸受、３・・・・・・支持体、４・・・・・・軸
受保持体、５・・・・・・上端部、６・・・・・・頚部
、７・・・・・・水車ハウジング、８・・・・・・環状
円板、９・・・・・・ボルト、１５，１９，２０・・・
・・・矢印、２１・・・・・・上側フランジ部分、２２
・・・・・・下側フランジ部分、２３・・・・・・平面
、２４・・・・・・矢印、２５・・・・・・点線。FIG. 1 is a longitudinal sectional view showing a preferred embodiment of a radial bearing device according to the present invention. FIG. 2 is a longitudinal sectional view showing deformation due to water pressure in the embodiment of FIG. 1. 1... Main shaft, 2...
... Bearing, 3 ... Support body, 4 ... Bearing holder, 5 ... Upper end, 6 ... Neck, 7 ... ...Water wheel housing, 8...Annular disc, 9...Bolt, 15, 19, 20...
...Arrow, 21...Upper flange part, 22
...Lower flange portion, 23...Plane, 24...Arrow, 25...Dotted line.
Claims (1)
受保持体により、軸受が支持されている水車主軸用のラ
ジアル軸受装置において、前記軸受保持体４が、ラジア
ル荷重に対して比較的剛固な環状円板５からなり、前記
環状円板５には、軸線方向に延びる中空円管状の頚部６
が形成されており、かつ、環状円板８が、その半径方向
の縁端部において、前記水車ハウジングと同軸をなして
固定されているとともに、その中心方向の縁端部におい
て、前記頚部６の自由端部と着脱可能に取付けられてい
ることを特徴とする水車主軸用のラジアル軸受装置。1. In a radial bearing device for a water turbine main shaft in which a bearing is supported by a bearing holder fixed to the water turbine housing through a thin neck, the bearing holder 4 is relatively rigid against radial loads. It consists of an annular disk 5, and the annular disk 5 has a neck portion 6 in the shape of a hollow circular tube extending in the axial direction.
is formed, and an annular disk 8 is fixed coaxially with the water turbine housing at its radial edge, and is fixed to the neck 6 at its central edge. A radial bearing device for a water turbine main shaft, characterized in that it is detachably attached to a free end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3014532A DE3014532C1 (en) | 1980-04-16 | 1980-04-16 | Radial bearing for water turbine shafts |
| DE30145325 | 1980-04-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56147922A JPS56147922A (en) | 1981-11-17 |
| JPS5933767B2 true JPS5933767B2 (en) | 1984-08-17 |
Family
ID=6100131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56038578A Expired JPS5933767B2 (en) | 1980-04-16 | 1981-03-17 | Radial bearing device for water turbine main shaft |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5933767B2 (en) |
| AT (1) | AT369513B (en) |
| BR (1) | BR6100504U (en) |
| CH (1) | CH653412A5 (en) |
| DE (1) | DE3014532C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109436276A (en) * | 2018-12-13 | 2019-03-08 | 中国船舶重工集团公司第七〇四研究所 | Asymmetric double supports slide thrust bearing to single fulcrum liquid bullet |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19952662C2 (en) * | 1999-11-02 | 2002-01-31 | Voith Hydro Gmbh & Co Kg | Bearing for the impeller of a water turbine |
| DE102018211620A1 (en) | 2018-07-12 | 2020-01-16 | Skf Marine Gmbh | bearings |
-
1980
- 1980-04-16 DE DE3014532A patent/DE3014532C1/en not_active Expired
-
1981
- 1981-02-18 AT AT0073581A patent/AT369513B/en not_active IP Right Cessation
- 1981-03-17 JP JP56038578A patent/JPS5933767B2/en not_active Expired
- 1981-04-08 BR BR6100504U patent/BR6100504U/en unknown
- 1981-04-13 CH CH2440/81A patent/CH653412A5/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109436276A (en) * | 2018-12-13 | 2019-03-08 | 中国船舶重工集团公司第七〇四研究所 | Asymmetric double supports slide thrust bearing to single fulcrum liquid bullet |
| CN109436276B (en) * | 2018-12-13 | 2023-06-02 | 中国船舶重工集团公司第七〇四研究所 | Asymmetric bidirectional single-fulcrum hydraulic spring support sliding thrust bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| BR6100504U (en) | 1982-04-27 |
| AT369513B (en) | 1983-01-10 |
| CH653412A5 (en) | 1985-12-31 |
| DE3014532C1 (en) | 1981-10-15 |
| JPS56147922A (en) | 1981-11-17 |
| ATA73581A (en) | 1982-05-15 |
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