JPH0730937Y2 - Once-through turbine - Google Patents
Once-through turbineInfo
- Publication number
- JPH0730937Y2 JPH0730937Y2 JP1989034772U JP3477289U JPH0730937Y2 JP H0730937 Y2 JPH0730937 Y2 JP H0730937Y2 JP 1989034772 U JP1989034772 U JP 1989034772U JP 3477289 U JP3477289 U JP 3477289U JP H0730937 Y2 JPH0730937 Y2 JP H0730937Y2
- Authority
- JP
- Japan
- Prior art keywords
- runner
- water
- turbine
- once
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 68
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 9
- 238000005192 partition Methods 0.000 description 6
- 239000010865 sewage Substances 0.000 description 4
- 238000006424 Flood reaction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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)
Description
【考案の詳細な説明】 A.産業上の利用分野 本考案は貫流水車に関し、低落差大流量で用いて好適な
ものである。[Detailed Description of the Invention] A. Industrial Application Field The present invention relates to a once-through turbine, which is suitable for use with a low head and a large flow rate.
B.従来の技術 水力エネルギー回収の一環として貫流水車を利用した発
電システムが知られている。B. Conventional technology A power generation system using a once-through turbine is known as a part of hydraulic energy recovery.
下水処理場等では、不純物を沈殿させ、上ずみの水を放
出することから、貫流水車には越流水を使用している。
また、放水庭は河川等であるため水位が変動する。この
様な施設は下水を集積することから低地に作られ、使用
できる落差が小さい。このため、下水処理場等で使用さ
れる貫流水車は、ランナの長さが長いものとなってい
た。At sewage treatment plants, etc., overflow water is used for the once-through turbine because it precipitates impurities and releases the water that has been accumulated.
Moreover, the water level fluctuates because the discharge garden is a river. Such facilities are built in lowlands because they collect sewage, and the usable head is small. Therefore, the once-through turbine used in the sewage treatment plant has a long runner.
C.考案が解決しようとする課題 従来、下水処理場のように悪条件が重なった場所で使用
される貫流水車のランナは細長いものとなっているた
め、剛性が不足して両端で支えると中央部が撓んでしま
う。ランナに撓みが生じると、ケーシングとの隙間が広
がりもれ水が多くなると共に、強度剛性不足のため実用
に耐えられなくなる。C. Problems to be solved by the invention Conventionally, the runners of once-through turbines used in places with adverse conditions, such as sewage treatment plants, are long and slender, so they lack rigidity and are supported at both ends by the center. The part will bend. When the runner bends, the gap between the runner and the casing expands, leaking more water, and lacking strength and rigidity makes it practically useless.
本考案は上記状況に鑑みてなされたもので、ランナの長
尺化を可能にして悪条件下でも使用できる貫流水車を提
供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a once-through turbine that enables the runner to be elongated and can be used even under adverse conditions.
D.課題を解決するための手段 上記目的を達成するための本考案の構成は、放水庭側の
水中に円筒状のランナを回転自在に支持し、該ランナに
水を導く導水管を備え、前記ランナの回転方向で水の出
口部と入口部との間における該ランナ外周位置に該ラン
ナに付着して旋回する水を導入する空洞部を設ける一
方、前記ランナと同心状の支承盤を該ランナに設け、該
支承盤を転接支持すると共に該支承盤を介して伝えられ
る前記ランナの回転を被駆動機に伝達する支承車輪を該
ランナの下部に転動自在に設けたことを特徴とする。D. Means for Solving the Problems The configuration of the present invention for achieving the above object is provided with a water guide pipe that rotatably supports a cylindrical runner in the water on the side of the discharge garden and guides water to the runner. A cavity for introducing water swirling attached to the runner is provided at an outer peripheral position of the runner between a water outlet portion and a water inlet portion in the rotation direction of the runner, while a support plate concentric with the runner is provided. A support wheel provided on the runner for rollingly supporting the support plate and for transmitting the rotation of the runner transmitted through the support plate to a driven machine is provided at a lower portion of the runner so as to be rotatable. To do.
E.作用 導水管によってランナに水が導かれランナが回転し、ラ
ンナに付着して旋回する水は空洞部に導入され、水の排
出はスムーズに行なわれる。支承盤に支承車輪を転接さ
せることによりランナを支承車輪で支えてランナの撓み
を防止すると共に、ランナで発生した動力を支承車輪か
ら被駆動機に伝達する。E. Action Water is guided to the runner by the water conduit, the runner rotates, and the water adhering to the runner and swirling is introduced into the cavity, and the water is discharged smoothly. By rolling the bearing wheels to the bearing plate, the runner is supported by the bearing wheels to prevent the runner from bending, and the power generated by the runner is transmitted from the bearing wheels to the driven machine.
F.実施例 第１図には本考案の一実施例に係る貫流水車の断面側
面、第２図にはその正面、第３図にはその導水管支持部
の側面、第４図にはその動力伝達機構部の側面を示して
ある。F. Embodiment FIG. 1 is a sectional side view of a once-through turbine according to an embodiment of the present invention, FIG. 2 is its front surface, FIG. 3 is its side surface of a water pipe support, and FIG. The side surface of the power transmission mechanism is shown.
第１図に示すように、１は水処理場等の越流水堰口、２
は越流水堰口１の角落とし（水の流れを止める水門）で
ある。３はランナ４に水を導くための導水管で、導水管
３の一端は越流水堰口１の下部に開口し、導水管３の他
端にはノズル部５が形成されている。また、導水管３の
他端には空洞部６を形成する延長部７が形成され、空洞
部６はランナ４の回転方向で水の出口部と入口部との間
に位置すると共に、ランナ４の外周位置に形成されてい
る。図中で示す如く、上水位が低い場合は導水管３に
よって全水量がランナ４に送り込まれ、で示す如く、
上水位が高い場合は導水管３を越流して水はオーバーフ
ローし放水庭８に流出する。この時、延長部７によって
越流した水がランナ４に直接かからないようになってい
る。As shown in Fig. 1, 1 is an overflow water weir of a water treatment plant, and 2
Is a corner drop of the overflow water weir 1 (a sluice that stops the flow of water). Reference numeral 3 is a water conduit for guiding water to the runner 4, one end of the water conduit 3 is opened to a lower portion of the overflow water weir opening 1, and a nozzle portion 5 is formed at the other end of the water conduit 3. In addition, an extension 7 that forms a cavity 6 is formed at the other end of the water conduit 3, and the cavity 6 is located between the outlet and the inlet of the water in the rotation direction of the runner 4 and Is formed at the outer peripheral position of. As shown in the figure, when the water level is low, the total amount of water is sent to the runner 4 by the water conduit 3, and
When the water level is high, the water overflows the water conduit 3 and overflows into the water discharge garden 8. At this time, the water overflowed by the extension portion 7 is prevented from directly contacting the runner 4.
第２図に示すように、放水庭基礎９には脚10が固定さ
れ、脚10にはランナ軸受11が設けられている。ランナ４
は多数のランナブレード12がランナ軸4aに円筒状に配さ
れることで構成され、ランナ軸受11にランナ軸4aが支持
されることによりランナ４が放水庭８の水中に回転自在
に支持される。ランナ４の軸方向途中部の適宜箇所には
ランナブレード12を保持する仕切板13が設けられてい
る。仕切板13はランナ４と同心状をなし、外周面が円滑
に仕上げられると共に、ランナ４の径よりも大径となっ
ている。つまり、仕切板13は支承盤となっている。As shown in FIG. 2, legs 10 are fixed to the drainage garden foundation 9, and runner bearings 11 are provided on the legs 10. Runner 4
Is configured by arranging a large number of runner blades 12 in a cylindrical shape on the runner shaft 4a, and the runner shaft 11 is supported by the runner bearing 11 so that the runner 4 is rotatably supported in the water in the discharge yard 8. . A partition plate 13 for holding the runner blade 12 is provided at an appropriate position in the axially intermediate portion of the runner 4. The partition plate 13 is concentric with the runner 4, the outer peripheral surface is smoothly finished, and the diameter is larger than the diameter of the runner 4. That is, the partition plate 13 is a support plate.
第２図に示すように、放水庭基礎９の仕切板13の下部に
は軸受台14が固定され、軸受台14には軸受15を介して支
承車輪16が回転自在に支持されている。支承車輪16は一
本の車軸17で連結され、車軸17の端部は脚10に設けられ
た軸受18に支持されている。車軸17の軸受18側の軸端に
はスプロケット19が設けられ、ランナ軸4aのランナ軸受
11側の軸端にはスプロケット20が設けられている。第２
図、第４図に示すように、スプロケット19は被駆動機21
のスプロケット22にチェーン23を介して連結され、スプ
ロケット20は被駆動機21のスプロケット24にチェーン25
を介して連結されている。尚、各車軸17のスプロケット
19同士はチェーン26によって連結されている。ランナ４
の駆動力はスプロケット19,20,22,24を介して被駆動機2
1に伝えられる。この時、ランナ４の外径D1と支承車輪1
6の直径D2とに差があるため、スプロケット19,22とスプ
ロケット20,24の直径比または歯数比をD1とD2の比に合
わせ、同一回転速度として被駆動機21に駆動力を伝達す
る。第３図に示すように、軸受18及びランナ軸受11が設
けられる脚10には導水管３が結合されている。As shown in FIG. 2, a bearing stand 14 is fixed to the lower part of the partition plate 13 of the water discharge yard foundation 9, and bearing wheels 16 are rotatably supported on the bearing stand 14 via bearings 15. The bearing wheels 16 are connected by a single axle 17, and the ends of the axle 17 are supported by bearings 18 provided on the legs 10. A sprocket 19 is provided on the shaft end on the bearing 18 side of the axle 17, and the runner bearing of the runner shaft 4a is provided.
A sprocket 20 is provided at the shaft end on the 11 side. Second
As shown in FIGS. 4 and 5, the sprocket 19 is a driven machine 21.
The sprocket 20 is connected to the sprocket 22 of the driven machine 21 via the chain 23.
Are connected via. In addition, the sprocket of each axle 17
The 19 parts are connected by a chain 26. Runner 4
The driving force of the driven machine 2 via the sprockets 19, 20, 22, 24
Passed to 1. At this time, the outer diameter D 1 of the runner 4 and the bearing wheel 1
Since there is a difference between the diameter D 2 of 6 and the diameter ratio or tooth number ratio of the sprockets 19 and 22 and the sprockets 20 and 24 to the ratio of D 1 and D 2 , the driving force is applied to the driven machine 21 at the same rotation speed. To convey. As shown in FIG. 3, the water conduit 3 is connected to the leg 10 provided with the bearing 18 and the runner bearing 11.
上述した貫流水車は幅方向複数台設けられ、水量が少な
い時は越流水堰口２を閉じて小数台で運転し、水量が多
い時は越流水堰口２を開けて運転台数を増加し、水量が
極めて多い時は導水管３を越流させて放水する。A plurality of the above-mentioned cross-flow turbines are provided in the width direction. When the amount of water is small, the overflow water weir 2 is closed and a small number of units are operated, and when the amount of water is large, the overflow water weir 2 is opened to increase the number of operating machines and When it is extremely large, the water conduit 3 is overflowed and water is discharged.
導水管３で導かれた水はノズル部５からランナ４に導入
され、ランナ４を回転させて放水庭８内に放出される。
ランナ４に付着して旋回する水は空洞部６に導入され放
水庭８にスムーズに排出される。The water guided by the water conduit 3 is introduced into the runner 4 from the nozzle portion 5, and the runner 4 is rotated to be discharged into the water discharge garden 8.
The water adhering to the runner 4 and swirling is introduced into the cavity 6 and smoothly discharged into the water discharge yard 8.
ランナ４の仕切板13は支承車輪16で支えられ、ランナ４
は撓みが防止される。また、ランナ４の回転動力は支承
車輪16及び車軸17からも伝達される。このため、ランナ
４の長尺化が可能になると共に、ランナ４で発生するト
ルクを十分に伝達することが可能になる。The partition plate 13 of the runner 4 is supported by bearing wheels 16,
Bending is prevented. The rotational power of the runner 4 is also transmitted from the supporting wheels 16 and the axle 17. Therefore, the runner 4 can be made longer and the torque generated by the runner 4 can be sufficiently transmitted.
第５図、第６図に基づいて空洞部の他の例を説明する。Another example of the cavity will be described with reference to FIGS. 5 and 6.
第５図に示したものは、空洞部51を閉塞させ、空洞部51
内で旋回流れを自由に旋回させるようにしたものであ
る。第６図に示したものは、導水管３の延長部７とラン
ナ４との間（ランナ４の外周位置）に空洞部61を形成
し、空洞部61をランナ４内に封じ込み、旋回流がランナ
４内で強く生じるようにしたものである。In the structure shown in FIG. 5, the hollow portion 51 is closed and the hollow portion 51 is
The swirling flow is freely swirled inside. In the structure shown in FIG. 6, a cavity portion 61 is formed between the extension 7 of the water conduit 3 and the runner 4 (outer peripheral position of the runner 4), and the cavity portion 61 is sealed in the runner 4 to allow swirling flow. Is strongly generated in the runner 4.
第７図、第８図に基づいて本考案の第二実施例に係る貫
流水車を説明する。第７図には本考案の第二実施例に係
る貫流水車の正面、第８図にはその動力伝達機構部の側
面を示してある。尚、第一実施例の貫流水車と同一部材
には同一符号を付して重複する説明は省略する。A once-through turbine according to a second embodiment of the present invention will be described with reference to FIGS. 7 and 8. FIG. 7 shows the front of the once-through turbine according to the second embodiment of the present invention, and FIG. 8 shows the side surface of its power transmission mechanism. The same members as those of the once-through turbine of the first embodiment are designated by the same reference numerals, and the duplicated description will be omitted.
前述した第一実施例の貫流水車では、ランナ４側と支承
車輪16側との回転速比を定める必要があり、速比のとり
方に限界がある。また、ランナ４の長さが長大になって
ねじれや撓みが大きくなった場合、伝達動力がランナ軸
4aまたは車軸17に偏重することがある。そこで、図示の
貫流水車では、動力伝達は車軸17側からのみ行なう。即
ち、スプロケット20同士はチェーン26によって連結さ
れ、スプロケット20はチェーン25によって被駆動機21の
スプロケット24に連結されている。ランナ４は支承車輪
16上で回転するのみであり、ランナ４は両端にだけラン
ナ軸4aが設けられている。In the once-through turbine of the first embodiment described above, it is necessary to determine the rotation speed ratio between the runner 4 side and the support wheel 16 side, and there is a limit to how to obtain the speed ratio. In addition, when the runner 4 becomes long and twists and bends greatly, the transmitted power is
4a or axle 17 may be biased. Therefore, in the once-through turbine shown, power transmission is performed only from the axle 17 side. That is, the sprockets 20 are connected by the chain 26, and the sprockets 20 are connected by the chain 25 to the sprockets 24 of the driven machine 21. Runner 4 is a bearing wheel
It only rotates on 16 and the runner 4 is provided with runner shafts 4a only at both ends.
従って、上述した貫流水車では、動力伝達の自由度が大
きくなり、スプロケット20を大きくし被駆動機21側のス
プロケット24を動力伝達に必要な最少直径とすることが
可能である。また、非常に長大なランナ４を製作した場
合、車軸17が動力伝達によってねじれてもランナ４にね
じれは生じない。このため、ランナ４に無理な力が加わ
ることなく動力伝達が円滑に行なえる。Therefore, in the once-through turbine, the degree of freedom in power transmission is increased, and it is possible to make the sprocket 20 large and make the sprocket 24 on the driven machine 21 side the minimum diameter required for power transmission. Further, when the very long runner 4 is manufactured, the runner 4 is not twisted even if the axle 17 is twisted by power transmission. For this reason, power can be smoothly transmitted without applying an excessive force to the runner 4.
尚、上記各実施例では、軸受は水中で用いるため水軸受
を採用しているので、伝達動力損失が非常に小さく水車
全体での騒音も小さい。In each of the above-mentioned embodiments, since the bearing is used underwater, a water bearing is used, so that the transmission power loss is very small and the noise of the entire turbine is also small.
G.考案の効果 本考案の貫流水車は、水中に支持されたランナに水を導
く導水管を設け、ランナに支承盤を設けると共に、支承
盤に転接し被駆動機に動力を伝達する支承車輪を設けた
ので、ランナを支承車輪で支えることができる。このた
め、ランナ径に対しランナ長さを長くしてもランナが撓
むことがなくなり、ランナ長の非常に長い貫流水車が得
られ、低落差の場所でも水力の有効活用が可能となる。
また、ランナ長さに制約がないので、ランナ径をできる
だけ小さくランナ長さを長くした設計とし、回転速度の
速い水車が得られるので、被駆動機への連結のための増
速比を小さくできる。また、流況に合わせた経済設計を
することで余剰水をオーバーフローさせる放水路を必要
とせず、水車の外側で流し得ると共に余剰水が水車自身
の効率を低下させることがなく円滑に排水できる。更
に、落差を最大限使用することから総合出力が大きくな
り経済性が向上すると共に、放水庭基礎に据付するので
据付力が強固で洪水時や出水時に流出のおそれがない。G. Effect of the Invention The once-through turbine of the present invention is provided with a water guide pipe for guiding water to a runner supported in water, a bearing plate for the runner, and a bearing wheel for rolling power to the bearing plate to transmit power to the driven machine. The runner can be supported by the bearing wheels. Therefore, even if the runner length is made longer than the runner diameter, the runner does not bend, and a once-through turbine with an extremely long runner length can be obtained, and effective use of hydraulic power is possible even in a low head position.
In addition, since there is no restriction on the runner length, the runner diameter is designed to be as small as possible and the runner length is designed to be long, and a turbine with a high rotation speed can be obtained, so the speed increasing ratio for connecting to the driven machine can be reduced. . Further, by designing the economy according to the flow conditions, it is possible to drain the surplus water smoothly without draining the surplus water from the outside of the water turbine without reducing the efficiency of the water turbine itself. In addition, the maximum output is used to maximize the total output, which improves economic efficiency, and because it is installed on the foundation of the discharge garden, the installation force is strong and there is no risk of outflow during floods or floods.
第１図は本考案の第一実施例に係る貫流水車の断面側面
図、第２図はその正面図、第３図はその導水管支持部の
側面図、第４図はその動力伝達機構部の側面図、第５
図、第６図は空洞部の他の例を説明する断面図、第７図
は本考案の第二実施例に係る貫流水車の正面図、第８図
はその動力伝達機構部の側面図である。 図面中、 ３は導水管、４はランナ、6,51,61は空洞部、９は放水
庭基礎、13は仕切板、16は支承車輪、19,22はスプロケ
ット、21は被駆動機、23はチェーンである。FIG. 1 is a sectional side view of a once-through water turbine according to a first embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view of a water guide support portion thereof, and FIG. 4 is a power transmission mechanism portion thereof. Side view of the fifth
6 and 6 are cross-sectional views for explaining another example of the hollow portion, FIG. 7 is a front view of a once-through turbine according to a second embodiment of the present invention, and FIG. 8 is a side view of the power transmission mechanism portion thereof. is there. In the drawing, 3 is a water pipe, 4 is a runner, 6,51,61 is a cavity, 9 is a water yard foundation, 13 is a partition plate, 16 is a support wheel, 19 and 22 are sprockets, 21 is a driven machine, 23 Is a chain.
Claims (1)
在に支持し、該ランナに水を導く導水管を備え、前記ラ
ンナの回転方向で水の出口部と入口部との間における該
ランナ外周位置に該ランナに付着して旋回する水を導入
する空洞部を設ける一方、前記ランナと同心状の支承盤
を該ランナに設け、該支承盤を転接支持すると共に該支
承盤を介して伝えられる前記ランナの回転を被駆動機に
伝達する支承車輪を該ランナの下部に転動自在に設けた
ことを特徴とする貫流水車。1. A cylindrical runner is rotatably supported in the water on the side of a water discharge yard, and a water guide pipe for guiding water to the runner is provided. Between the outlet and the inlet of water in the rotation direction of the runner. At the outer peripheral position of the runner, a cavity for adhering to the runner and for introducing water to be swirled is provided, while a bearing plate concentric with the runner is provided at the runner, and the bearing plate is rollingly supported and the bearing plate is provided. A once-through water turbine, characterized in that a bearing wheel for transmitting the rotation of the runner transmitted through the runner to a driven machine is provided rotatably below the runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989034772U JPH0730937Y2 (en) | 1989-03-29 | 1989-03-29 | Once-through turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989034772U JPH0730937Y2 (en) | 1989-03-29 | 1989-03-29 | Once-through turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02126079U JPH02126079U (en) | 1990-10-17 |
| JPH0730937Y2 true JPH0730937Y2 (en) | 1995-07-19 |
Family
ID=31539537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989034772U Expired - Lifetime JPH0730937Y2 (en) | 1989-03-29 | 1989-03-29 | Once-through turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730937Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011089513A (en) * | 2009-10-26 | 2011-05-06 | Osamu Nagao | Natural river power generation system |
| JP5155990B2 (en) * | 2009-12-01 | 2013-03-06 | 三菱電機プラントエンジニアリング株式会社 | Fluid energy recovery device |
-
1989
- 1989-03-29 JP JP1989034772U patent/JPH0730937Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02126079U (en) | 1990-10-17 |
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