JPH0250316B2 - - Google Patents
Info
- Publication number
- JPH0250316B2 JPH0250316B2 JP58063328A JP6332883A JPH0250316B2 JP H0250316 B2 JPH0250316 B2 JP H0250316B2 JP 58063328 A JP58063328 A JP 58063328A JP 6332883 A JP6332883 A JP 6332883A JP H0250316 B2 JPH0250316 B2 JP H0250316B2
- Authority
- JP
- Japan
- Prior art keywords
- casing
- cover
- runner
- rear cover
- opening
- 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 - Lifetime
Links
- 238000004891 communication Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F03B11/02—Casings
- F03B11/025—Covers
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、フランシス水車のうち特に主軸を横
置きとした横軸フランシス水車に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a Francis turbine, particularly a horizontal-axis Francis turbine in which the main shaft is placed horizontally.
従来から小容量の水車として、横軸フランシス
水車が用いられている。この横軸フランシス水車
の構造は第１図に示すように、コンクリート製の
床１に半埋設状態に渦巻ケーシング２を固定し、
この渦巻ケーシング２の中心部にケーシング２と
連通する空間部をカバー３，４によつて形成し、
この空間内に主軸５に嵌着するランナ６を収容し
てなり、管路からの水はケーシング２内に入り流
速を増しつつスピードリング７及び案内羽根８を
経てランナ６内に流入し、ランナ６を回転せし
め、その後ドラフトチユーブ９を経て放水路に導
かれるような構造となつている。
Horizontal shaft Francis turbines have traditionally been used as small-capacity water turbines. As shown in Fig. 1, the structure of this horizontal axis Francis turbine is as follows: A spiral casing 2 is fixed in a semi-buried state on a concrete floor 1.
A space communicating with the casing 2 is formed in the center of the spiral casing 2 by the covers 3 and 4,
A runner 6 that fits onto the main shaft 5 is housed in this space, and water from the pipe enters the casing 2 and flows into the runner 6 through the speed ring 7 and the guide vane 8 while increasing the flow velocity. 6 is rotated and then guided to the discharge channel via a draft tube 9.
上記の如き従来の横軸フランシス水車にあつて
は、渦巻ケーシングの製作が面倒で且つ支持方法
にも問題があり、また横軸であるため、分解及び
組立が立軸に比較して行ない難いという不利があ
る。更に前述したように渦巻ケーシングはコンク
リート等の床に埋設されているためセンタリング
がやりにくいという問題もある。
Conventional horizontal shaft Francis turbines as described above have the disadvantage that the manufacture of the volute casing is troublesome and there are problems with the supporting method, and because the turbine has a horizontal shaft, it is difficult to disassemble and assemble compared to a vertical shaft. There is. Furthermore, as mentioned above, since the spiral casing is buried in a floor of concrete or the like, it is difficult to center the spiral casing.
本発明は上記した従来の横軸フランシス水車の
欠点を改善すべくなしたものであつて、その目的
とするところは、製作が容易で且つ分解・組立が
簡単にできる横軸フランシス水車を提供するにあ
る。
The present invention has been made to improve the above-mentioned drawbacks of the conventional horizontal-shaft Francis turbine, and its purpose is to provide a horizontal-shaft Francis turbine that is easy to manufacture and easy to disassemble and assemble. It is in.
上記目的を達成するため本発明に係る横軸フラ
ンシス水車は、管路とつながるケーシング内にラ
ンナを収容する後部カバーとこの後部カバーに接
続されるドラフトチユーブを収めるとともに、上
記後部カバーの前端部をケーシングに形成した開
口に取付け、更に後部カバーの前端部に形成した
開口をランナを回転自在に支承する前部カバーで
閉塞したことをその概要としている。
In order to achieve the above object, a horizontal axis Francis turbine according to the present invention includes a rear cover housing a runner and a draft tube connected to the rear cover in a casing connected to a pipeline, and a front end of the rear cover. The runner is attached to an opening formed in the casing, and the opening formed at the front end of the rear cover is closed by a front cover that rotatably supports the runner.
以下に本発明の実施例を第２図に基いて説明す
る。
An embodiment of the present invention will be described below with reference to FIG.
第２図は本発明に係る横軸フランシス水車の縦
断面図であり、床１０上にはボツクス状をなすケ
ーシング１１が固定されている。このケーシング
１１は管路につながるとともにその一端面（図中
左側）に開口１２を形成し、この開口１２に後部
カバー（筒状カバー）１３が取付けられている。 FIG. 2 is a longitudinal cross-sectional view of a horizontal-axis Francis turbine according to the present invention, in which a box-shaped casing 11 is fixed on a floor 10. This casing 11 is connected to a pipe line and has an opening 12 formed in one end surface (on the left side in the figure), and a rear cover (cylindrical cover) 13 is attached to this opening 12.
後部カバー１３は略筒状をなし前端開口１４の
周囲にはフランジ部１５が形成され、このフラン
ジ部１５の内面が開口１２の周囲に外側から当接
するようにして固定されている。而して後部カバ
ー１３はその前端部が大気中に露出する状態でケ
ーシング１１内に収容される。また後部カバー１
３の外周部には上記ケーシング１１とつながる連
通部１６を形成し、更に後部カバー１３の後端開
口１７には同じくケーシング１１内に収められる
ドラフトチユーブ１８の一端が接続されている。 The rear cover 13 has a substantially cylindrical shape and has a flange portion 15 formed around the front end opening 14, and is fixed such that the inner surface of the flange portion 15 contacts the periphery of the opening 12 from the outside. The rear cover 13 is housed in the casing 11 with its front end exposed to the atmosphere. Also rear cover 1
A communicating portion 16 connected to the casing 11 is formed on the outer periphery of the rear cover 13, and one end of a draft tube 18, which is also housed within the casing 11, is connected to a rear end opening 17 of the rear cover 13.
また、上記後部カバー１３のフランジ部１５の
内側には段部１９が設けられ、この段部１９に軸
承カバー２０が嵌着されている。この軸承カバー
２０の中央部には貫通孔２１を穿設し、この貫通
孔２１に後部カバー１３内に収容されたランナ２
２の軸部２２ａを挿通し、軸受２３を介してラン
ナ２２を前部カバー２０によつてオーバーハング
状態で回転自在に支持している。そしてランナ２
２の軸部２２ａは床１０に立設した軸受２４に回
転自在に支持される主軸２５と連結している。 Further, a stepped portion 19 is provided inside the flange portion 15 of the rear cover 13, and a bearing cover 20 is fitted into this stepped portion 19. A through hole 21 is bored in the center of the bearing cover 20, and a runner 2 accommodated in the rear cover 13 is inserted into the through hole 21.
The runner 22 is rotatably supported by the front cover 20 via a bearing 23 in an overhanging state. and runner 2
The second shaft portion 22a is connected to a main shaft 25 rotatably supported by a bearing 24 erected on the floor 10.
以上において、管路からケーシング１１内に入
つた水は矢印で示す如くケーシング１１内を流
れ、連通部１６を介してランナ２２内に流入し、
ランナ２２を回転せしめることで主軸２５を回転
せしめ、ランナの羽根の間を通つて、振動しない
ように固定されたドラフトチユーブ１８内に流入
し、このドラフトチユーブ１８内を流れて放水路
に至る。 In the above, water that entered the casing 11 from the pipe flows inside the casing 11 as shown by the arrow, flows into the runner 22 via the communication part 16,
By rotating the runner 22, the main shaft 25 is rotated, and the water flows through the blades of the runner into the draft tube 18 fixed so as not to vibrate, flows through the draft tube 18, and reaches the discharge channel.
以上説明したように本発明によれば、ケーシン
グの一端に形成した開口を筒状の後部カバー及び
軸承カバーによつて閉塞するようにしたので、従
来の如き渦巻ケーシングが不要となり、ケーシン
グをボツクス状等の簡単な形状とすることがで
き、製作が容易となる。またドラフトチユーブを
ケーシング内に収めたので、ドラフトチユーブの
内圧と外圧との差を小さくすることができ、ドラ
フトチユーブの板厚を薄くすることができる。更
にケーシングに後部カバーを、この後部カバーに
軸承カバーをそれぞれ取付けるようにしたので、
カバーを支持する特別な架台等を設ける必要がな
く部品点数の削減を図れるとともに、分解・組立
を容易に行うことができる等多くの効果を有す
る。
As explained above, according to the present invention, since the opening formed at one end of the casing is closed by the cylindrical rear cover and the shaft bearing cover, the conventional spiral casing is no longer necessary, and the casing is shaped like a box. It can be made into a simple shape such as, and manufacturing is easy. Furthermore, since the draft tube is housed within the casing, the difference between the internal pressure and external pressure of the draft tube can be reduced, and the plate thickness of the draft tube can be reduced. Furthermore, I installed the rear cover on the casing and the shaft bearing cover on this rear cover, so
There is no need to provide a special frame to support the cover, and the number of parts can be reduced, and disassembly and assembly can be easily performed.
第１図は従来の横軸フランシス水車の縦断面
図、第２図は本発明に係る横軸フランシス水車の
縦断面図である。
１１…ケーシング、１２…ケーシングの開口、
１３…後部カバー、１４…後部カバーの開口、１
８…ドラフトチユーブ、２０…軸承カバー、２２
…ランナ、２５…主軸。
FIG. 1 is a longitudinal sectional view of a conventional horizontal-axis Francis turbine, and FIG. 2 is a longitudinal sectional view of a horizontal-axis Francis turbine according to the present invention. 11...Casing, 12...Casing opening,
13... Rear cover, 14... Opening of rear cover, 1
8... Draft tube, 20... Bearing cover, 22
...Runner, 25...Main shaft.
Claims (1)
状ケーシングと、このケーシング内に設けられ且
つ一端部が上記ケーシングの開口に取付けられラ
ンナを収容するとともに外周面にケーシング内に
開口する連通部を備えた筒状カバーと、この筒状
カバーの一端部に形成した開口を塞ぐとともに筒
状カバー内に収容したランナを回転自在に支承す
る軸承カバーと、上記ケーシング内に設けられ、
筒状カバーの他端部に形成した開口に接続される
ドラフトチユーブとからなる横軸フランシス水
車。1. A cylindrical casing that is connected to a conduit and has an opening at one end, and a communication section that is provided within this casing and has one end that is attached to the opening of the casing, accommodates a runner, and opens into the casing on the outer peripheral surface. a cylindrical cover provided with a cylindrical cover; a bearing cover that closes an opening formed at one end of the cylindrical cover and rotatably supports a runner housed within the cylindrical cover; and a bearing cover provided within the casing;
A horizontal shaft Francis turbine consisting of a draft tube connected to an opening formed at the other end of a cylindrical cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58063328A JPS59190480A (en) | 1983-04-11 | 1983-04-11 | Horizontal francis water wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58063328A JPS59190480A (en) | 1983-04-11 | 1983-04-11 | Horizontal francis water wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59190480A JPS59190480A (en) | 1984-10-29 |
| JPH0250316B2 true JPH0250316B2 (en) | 1990-11-01 |
Family
ID=13226070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58063328A Granted JPS59190480A (en) | 1983-04-11 | 1983-04-11 | Horizontal francis water wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59190480A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439722B (en) * | 2019-07-05 | 2020-06-23 | 清华大学 | Wear-resistant mixed-flow water turbine suitable for high water head, high rotating speed and high sand content |
-
1983
- 1983-04-11 JP JP58063328A patent/JPS59190480A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59190480A (en) | 1984-10-29 |
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