JPH0732941Y2 - Intake device for once-through turbine - Google Patents
Intake device for once-through turbineInfo
- Publication number
- JPH0732941Y2 JPH0732941Y2 JP1988132279U JP13227988U JPH0732941Y2 JP H0732941 Y2 JPH0732941 Y2 JP H0732941Y2 JP 1988132279 U JP1988132279 U JP 1988132279U JP 13227988 U JP13227988 U JP 13227988U JP H0732941 Y2 JPH0732941 Y2 JP H0732941Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- runner
- turbine
- air
- communication passage
- 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 - Fee Related
Links
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 本考案は貫流水車の改良に関し、水車の効率向上を企図
したものである。[Detailed Description of the Invention] A. Industrial Application Field The present invention relates to the improvement of the once-through turbine, and is intended to improve the efficiency of the turbine.
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.
第５図には従来の貫流水車の構造を表わす一部破断した
斜視を示してある。FIG. 5 shows a partially broken perspective view showing the structure of a conventional once-through turbine.
水の位置エネルギーにより回転される複数のランナブレ
ード1aを有するランナ１は、ケーシング２内にシールが
内蔵された軸受3aを介して回転軸３に回転可能に支持さ
れている。ケーシング２とランナ１の上部外周面の間に
は、水漏れや水流の飛散を防止するために上部ノズル2a
がケーシング２から延設されている。ランナ１の上流側
において、ケーシング２には入口管４が接続され、この
入口管４の出口側に対応するケーシング２の入口側に
は、ランナ１に入る水量を調整するガイドベーン５が開
閉可能に設けられている。ランナ１の下流側において、
ケーシング２には別のケーシング６に接続され、これら
のケーシング2,6に垂下する放水管７が接続されてい
る。尚、この放水管７は放水庭の水中に導かれる。入口
管４より流入した水はガイドベーン５で調整されてラン
ナ１に入り、ランナ１を回転させた後その外周から放出
され、放水管７を通して放水庭の水中に排出される。A runner 1 having a plurality of runner blades 1a rotated by the potential energy of water is rotatably supported by a rotary shaft 3 via a bearing 3a having a seal built in a casing 2. An upper nozzle 2a is provided between the casing 2 and the outer peripheral surface of the upper portion of the runner 1 to prevent water leakage and water flow scattering.
Is extended from the casing 2. An inlet pipe 4 is connected to the casing 2 on the upstream side of the runner 1, and a guide vane 5 for adjusting the amount of water entering the runner 1 can be opened and closed on the inlet side of the casing 2 corresponding to the outlet side of the inlet pipe 4. It is provided in. On the downstream side of the runner 1,
Another casing 6 is connected to the casing 2, and a water discharge pipe 7 is connected to the casings 2 and 6 so as to hang down. The water discharge pipe 7 is guided into the water in the water discharge garden. The water flowing in through the inlet pipe 4 is adjusted by the guide vanes 5 into the runner 1, is discharged from the outer periphery after rotating the runner 1, and is discharged into the water in the discharge garden through the water discharge pipe 7.
この水車の運転中、放水中に空気が混入して排出される
ことによりケーシング2,6等からなる水車室内は負圧と
なる。この負圧状態は入口管４からの水を強制的に吸い
込む力として作用し、結果として水車の効率を向上させ
ている。一方、水車室内が負圧になると、放水管７内の
放水面が上昇するが、ランナ１が浸るほど放水面が上昇
しては具合が悪いので、水車室内の負圧を調整して放水
面を適正にすべくケーシング６には弁装置８が設けてあ
る。つまり、水車室内の負圧がある値になると弁装置８
が開いて水車室内に空気を導き水車室内の負圧がある値
以上にならないようにしているのである。During operation of the water turbine, air is mixed into the discharged water and discharged, so that the pressure inside the water turbine chamber including the casings 2 and 6 becomes negative. This negative pressure state acts as a force for forcibly sucking in water from the inlet pipe 4, and consequently improves the efficiency of the water turbine. On the other hand, when the water pressure inside the water turbine chamber becomes negative, the water discharge surface in the water discharge pipe 7 rises. However, since the water discharge surface rises as the runner 1 is submerged, it is uncomfortable. A valve device 8 is provided in the casing 6 in order to properly operate the valve. That is, when the negative pressure in the turbine interior reaches a certain value, the valve device 8
Is opened to introduce air into the turbine to prevent the negative pressure in the turbine from exceeding a certain value.
C.考案が解決しようとする課題 第５図に示した貫流水車では、以下に示す問題があっ
た。C. Problems to be solved by the device The once-through turbine shown in Fig. 5 had the following problems.
水車室内の負圧を調整するため、弁装置８による水車
室内への空気の補給が必要となり、吸気音が発生し騒音
の原因となるため消音器が必要となっていた。In order to adjust the negative pressure in the turbine interior, it is necessary to supply air to the turbine interior by the valve device 8, and intake noise is generated, which causes noise. Therefore, a muffler is required.
洪水時等で放水庭の水位が水車より高くなるような場
合は、弁装置８から水が流入し水車室内に浸水する場合
があった。When the water level in the discharge yard becomes higher than that of the water turbine due to a flood or the like, water may flow from the valve device 8 and infiltrate into the water turbine room.
最も回転軸３側を貫流してランナ１から放出される部
分の水は、ランナ１の回転に巻き込まれて排出が妨げら
れる場合があった。There is a case where the water of the part which flows through the rotation shaft 3 side most and is discharged from the runner 1 is caught in the rotation of the runner 1 and is prevented from being discharged.
水車の始動時や負荷急変時等、水車内部の流れが急激
に変化する場合に、弁装置８から水を吐出することがあ
った。Water may be discharged from the valve device 8 when the flow inside the turbine changes suddenly, such as when the turbine starts or when the load changes suddenly.
本考案は上記状況に鑑みてなされたもので、放水庭部の
空気をランナの空転部に供給する貫流水車の吸気装置を
提供し、もってランナへの水の巻き込みを阻止して空気
を水車室内に供給すると共に、水と空気の流れを整え、
水車効率向上を図ることを目的とする。The present invention has been made in view of the above circumstances, and provides an intake device for a once-through water turbine that supplies air in a water discharge yard to an idle portion of a runner, thereby preventing entrainment of water in the runner to remove air. And supply the water and air,
The purpose is to improve turbine efficiency.
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、ランナブレ
ードが円筒状に配されたランナを水車室ケーシングに回
転自在に支持し、該ランナを回転させた水を放水庭に放
水する貫流水車において、水が進入する部位の回転方向
後側と水が排出される部位の回転方向前側との間におけ
る前記ランナの部位を、前記放水庭の水面上部との間で
連通路を介して連通し、該連通路に外部に開口する開口
部を形成し、該開口部に前記連通路の開閉を行なう吸気
量調整弁を取付け、該吸気量調整弁の開閉操作を外部か
ら行なう操作手段を該吸気量調整弁に設けたことを特徴
とする。D. Means for Solving the Problems The structure of the present invention for achieving the above-mentioned object is a runner in which a runner blade arranged in a cylindrical shape is rotatably supported in a water turbine casing, and water is generated by rotating the runner. In a once-through water turbine that discharges water to the discharge garden, the runner portion between the rear side in the rotation direction of the portion where water enters and the front side in the rotation direction of the portion where water is discharged is between the water surface upper portion of the discharge garden. To form an opening that opens to the outside in the communication passage, and an intake amount adjustment valve that opens and closes the communication passage is attached to the opening to open and close the intake amount adjustment valve. It is characterized in that the intake amount adjusting valve is provided with an operating means to be operated from the outside.
E.作用 放水庭の水面上部の空気は連通路を介して吸気量調整弁
で流量が調整されてランナの空転部に吸入され、ランナ
への水の巻き込みを阻止しつつ水車室内の負圧を調整す
る。放水庭の水位が高くなった場合、吸気量調整弁を閉
じ水車室内への水の流入を防止する。吸気量調整弁は開
口部から外すことで外部に取外すことができる。E. Function The air above the water surface of the water discharge garden is sucked into the idle part of the runner after the flow rate is adjusted by the intake air amount adjustment valve through the communication passage, and the negative pressure inside the water turbine room is prevented while preventing the water from being caught in the runner. adjust. When the water level in the drainage yard becomes high, the intake amount adjustment valve is closed to prevent the inflow of water into the turbine interior. The intake air amount adjustment valve can be removed to the outside by removing it from the opening.
F.実施例 第１図には本考案の一実施例に係る吸気装置を備えた貫
流水車の断面、第２図には吸気量調整弁の拡大状態を示
してある。F. Embodiment FIG. 1 shows a cross section of a once-through turbine equipped with an intake device according to an embodiment of the present invention, and FIG. 2 shows an enlarged state of an intake air amount adjusting valve.
放水管７の出口は放水庭11の水中に開口しており、ケー
シング2,6は架台12を介して放水庭11のコンクリート床1
3に支持されている。放水管７の外周には補強骨14を介
して外側板15が取付けられ、外側板15と放水管７との間
に連通路16が形成されている。連通路16の下方は放水庭
11の水面上部に開口しており、連通路16の上方には外側
板15と放水管７を貫通して放水管７内を外部に開口する
開口部17が形成されている。放水管７側の開口部17はラ
ンナ１の空転部18、即ち水が進入する部位の回転方向後
側と水が排出される部位の回転方向前側に向けて開口し
ている。尚、第１図中の符号で19は波よけである。The outlet of the water discharge pipe 7 opens into the water of the water discharge yard 11, and the casings 2 and 6 are mounted on the concrete floor 1 of the water discharge yard 11 via the mount 12.
Backed by 3. An outer plate 15 is attached to the outer periphery of the water discharge pipe 7 via a reinforcing bone 14, and a communication passage 16 is formed between the outer plate 15 and the water discharge pipe 7. Below the communication passage 16 is a water discharge garden.
An opening 17 is formed on the upper surface of the water surface 11, and an opening 17 is formed above the communication passage 16 to penetrate the outer plate 15 and the water discharge pipe 7 and open the inside of the water discharge pipe 7 to the outside. The opening 17 on the side of the water discharge pipe 7 opens toward the idling portion 18 of the runner 1, that is, toward the rear side in the rotational direction of the portion where water enters and the front side in the rotational direction of the portion where water is discharged. The reference numeral 19 in FIG. 1 is a wave shelter.
第２図に示すように、開口部17には円筒状のバルブボデ
ー20が固定され、連通路16内におけるバルブボデー20に
は吸込口21が形成されると共に、放水管７内におけるバ
ルブボデー20には吐出口22が形成されている。吐出口22
はランナ１の回転方向に沿うように上方に向けられてい
る。放水庭11の水面上部の空気は連通路16を通って吸入
口21からバルブボデー20内に送られ、吐出口22からラン
ナ１に供給される（第２図で矢印で示す）。バルブボデ
ー20内には弁体23が移動自在に配され、弁体23の移動に
よって吸込口21が開閉される。バルブボデー20の外部側
端部には蓋24が固定され、蓋24にはねじ棒25が螺合して
いる。ねじ棒25の一端は外部に位置し、ねじ棒25の他端
は弁体23に取付けられている。つまり、ねじ棒25を回転
させることにより弁体23が移動し、吸入口21の開閉、即
ち開口部17の開閉が行なわれる。つまり、バルブボデー
20、弁体23、蓋24、ねじ棒25によって吸気量調整弁30が
構成されている。ねじ棒25の一端には操作手段としての
ハンドル26が固定され、ハンドル26を介してねじ棒25の
回動が行なわれる。尚、第２図中の符号で27は弁体23と
バルブボデー20内とのシールを行なうＯリング、28は蓋
24及びバルブボデー20を外側板15に固定するボルトであ
る。As shown in FIG. 2, a cylindrical valve body 20 is fixed in the opening 17, a suction port 21 is formed in the valve body 20 in the communication passage 16, and a valve body 20 in the water discharge pipe 7 is formed. A discharge port 22 is formed in the. Discharge port 22
Are directed upward along the rotation direction of the runner 1. The air above the water surface of the discharge yard 11 is sent from the suction port 21 into the valve body 20 through the communication passage 16 and is supplied to the runner 1 from the discharge port 22 (shown by an arrow in FIG. 2). A valve body 23 is movably arranged in the valve body 20, and the suction port 21 is opened and closed by the movement of the valve body 23. A lid 24 is fixed to the outer end of the valve body 20, and a screw rod 25 is screwed onto the lid 24. One end of the screw rod 25 is located outside, and the other end of the screw rod 25 is attached to the valve body 23. That is, the valve body 23 is moved by rotating the screw rod 25, and the inlet 21 is opened and closed, that is, the opening 17 is opened and closed. That is, the valve body
An intake amount adjusting valve 30 is constituted by 20, the valve body 23, the lid 24, and the screw rod 25. A handle 26 as an operating means is fixed to one end of the screw rod 25, and the screw rod 25 is rotated via the handle 26. Reference numeral 27 in FIG. 2 is an O-ring for sealing the valve body 23 and the valve body 20 and 28 is a lid.
A bolt for fixing the valve body 24 and the valve body 20 to the outer plate 15.
貫流水車では、入口管４より流入した水はガイドベーン
５で調整されてランナ１に入り、ランナ１を回転させた
後その外周から放出され、放水管７を通して放水庭11の
水中に排出される。貫流水車は、ランナ１部で水と空気
が混合することから放水管７から吐出する水には20〜30
％の空気が混水し、空気は泡として放水面に浮上する。
従って、水車内部の空気が放水管７を通して放出される
ために空気の補給が必要である。In the once-through turbine, the water flowing from the inlet pipe 4 enters the runner 1 after being adjusted by the guide vanes 5, is discharged from the outer periphery after rotating the runner 1, and is discharged into the water in the water discharge garden 11 through the water discharge pipe 7. . Since the once-through water turbine mixes water and air in the runner 1 part, the water discharged from the water discharge pipe 7 has 20 to 30
% Of air is mixed, and the air floats on the discharge surface as bubbles.
Therefore, it is necessary to replenish the air because the air inside the water turbine is discharged through the water discharge pipe 7.
放水管７から放出した水の中に含まれた空気は、放水庭
11で浮上して連通路16内に吸い込まれて吸込口21からバ
ルブボデー20内に流入し、吐出口22から再びランナ１部
に導入され、空気は水車内と放水庭11を循環することに
なる。吸込口21からバルブボデー20内への空気の流入量
を吸気量調整弁30によって制限することにより、水車内
部は負圧となって放水管７内は水柱となると共に負圧分
は入口管４からの水を吸引する効果があり、吐出側の落
差の一部を有効に活用し、水車出力を増大する効果があ
る。吸気量調整弁30の調整は、ハンドル26を回して弁体
23を移動させることにより吸込口21の開口面積を調節し
て空気流入量を制限して行なう。The air contained in the water discharged from the discharge pipe 7 is
It floats at 11 and is sucked into the communication passage 16 and flows into the valve body 20 through the suction port 21, and is introduced again into the runner part 1 through the discharge port 22 so that the air circulates inside the water turbine and the discharge yard 11. Become. By limiting the amount of air flowing from the suction port 21 into the valve body 20 by the intake air amount adjusting valve 30, the inside of the turbine becomes a negative pressure, the inside of the water discharge pipe 7 becomes a water column, and the negative pressure component becomes the inlet pipe 4 It has the effect of sucking water from the water, effectively utilizing a part of the head on the discharge side, and increasing the output of the water turbine. To adjust the intake air volume adjustment valve 30, turn the handle 26
By moving 23, the opening area of the suction port 21 is adjusted to limit the air inflow amount.
吐出口22から水車内に入った空気は、ランナ１内に入り
第１図で矢印で示すように水の境界表面を押して水の流
れを整える。また、吐出口22をランナ１の回転方向に向
けて空気を導入することにより、ランナブレード1aに付
着した水を吹き飛ばして次のステージの水ジェットの吹
き込みを円滑とし、水車内部の空気の流れを整える。こ
の結果、ランナ１内の空気と水の流れの乱れを最小限に
でき水車効率を向上させることができる。The air that has entered the turbine through the discharge port 22 enters the runner 1 and pushes the boundary surface of the water as shown by the arrow in FIG. Further, by introducing air toward the runner 1 in the rotation direction of the runner 1, the water adhering to the runner blade 1a is blown off to smoothly blow the water jet in the next stage, and the air flow inside the water turbine is improved. Arrange. As a result, the turbulence of the flow of air and water in the runner 1 can be minimized and the turbine efficiency can be improved.
吸気量調整弁30は、外部側から開口部17に固定され、放
水管７への加工は簡単な穴あけ加工に集約されている。
また、吸気量調整弁30自体の構造も簡単な構造であるた
め、水車据付後であっても容易に取付け調整が行なえ
る。連通路16内は砂やホコリが付着しやすい場所である
が、吸気量調整弁30は外部へ容易に取外すことができる
ので、吸気量調節弁30を取外すことにより連通路16の清
掃が容易に行なえる。The intake air amount adjusting valve 30 is fixed to the opening 17 from the outside, and the processing of the water discharge pipe 7 is concentrated on simple drilling.
Further, since the intake air amount adjusting valve 30 itself has a simple structure, the installation and adjustment can be easily performed even after the turbine is installed. The inside of the communication passage 16 is a place where sand and dust are likely to adhere, but since the intake air amount adjustment valve 30 can be easily removed to the outside, it is easy to clean the communication passage 16 by removing the intake air amount adjustment valve 30. I can do it.
上述した吸気装置は、室内への空気補給が不要なため、
吸気音が発生せず静粛な運転が可能で消音器が不要であ
る。また、放水庭の水位が上昇しても、流量制御弁18を
閉じることによって水が水車内に逆流することがない。
また、空気と水の流れが整えられて水の中に混入する空
気量が減少し、ランナ１に付着して巻き込まれる水の流
れを阻止し水車効率が向上する。実験によると、低落差
（落差Hs＝2m）のもので、1.5％〜1.8％の効率向上が確
認された。また、負荷急変や始動時の水漏れがない。ま
た、空気を循環使用するので、放水庭11の空気抜きが省
略できると共に、空気に含まれる臭気の発散がなく、汚
染水や上水（塩素ガス処理水）では水中に含まれる臭気
の拡散防止ができる。The air intake device described above does not require air supply to the room,
Quiet operation is possible without the generation of intake noise and no silencer is required. Further, even if the water level in the discharge garden rises, the flow control valve 18 is closed so that water does not flow back into the turbine.
Further, the flow of air and water is regulated, the amount of air mixed in the water is reduced, and the flow of water adhering to and caught in the runner 1 is blocked to improve the turbine efficiency. According to the experiments, it was confirmed that the efficiency was improved by 1.5% to 1.8% with a low head (head Hs = 2 m). In addition, there are no sudden changes in load and no water leakage at startup. In addition, since air is circulated and used, it is possible to omit the air venting of the water discharge garden 11, there is no emission of odors contained in the air, and it is possible to prevent the diffusion of odors contained in contaminated water or tap water (chlorine gas treated water). it can.
次に、第３図、第４図に基づいて本考案の第二実施例を
説明する。第３図には本考案の第二実施例に係る吸気装
置の吸気量調整弁の断面、第４図には第３図中のIV-IV
線矢視を示してある。Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a sectional view of the intake air amount adjusting valve of the intake device according to the second embodiment of the present invention, and FIG. 4 is IV-IV in FIG.
A line-arrow view is shown.
放水管７の内側には断面コ字型の隔壁31が設けられ、隔
壁31と放水管７とで囲まれた部位が連通路32となってい
る。連通路32の上部はランナ１の空転部18に向けて開口
し、連通路32の下部は放水庭11の水面上部に開口してい
る。連通路32の上部開口近傍における放水管７には開口
部33が設けられ、開口部33に対応した連通路32には仕切
突起34が設けられている。開口部33にはバルブボデー35
が取付けられ、バルブボデー35の連通路16側は開放状態
になっている。バルブボデー35の外部側は蓋36が一体形
成され、蓋36には第２図で示したものと同一のねじ棒25
が螺合している。またバルブボデー35内におけるねじ棒
25の端部には第２図で示したものと同一の弁体23が設け
られ、ねじ棒25の回転により弁体23を連通路32側に移動
させると、仕切突起34に弁体23が嵌合し連通路32を閉塞
できる。図中37は加工用の穴、38は穴37を塞ぐ盲板、26
は第２図で示したものと同一のハンドルである。A partition wall 31 having a U-shaped cross section is provided inside the water discharge pipe 7, and a portion surrounded by the partition wall 31 and the water discharge pipe 7 is a communication passage 32. The upper part of the communication passage 32 opens toward the idle part 18 of the runner 1, and the lower part of the communication passage 32 opens above the water surface of the discharge garden 11. An opening 33 is provided in the water discharge pipe 7 near the upper opening of the communication passage 32, and a partition projection 34 is provided in the communication passage 32 corresponding to the opening 33. Valve body 35 in opening 33
Is attached, and the communication passage 16 side of the valve body 35 is open. A lid 36 is integrally formed on the outer side of the valve body 35. The lid 36 has the same threaded rod 25 as that shown in FIG.
Are screwed together. In addition, the threaded rod in the valve body 35
The same valve element 23 as that shown in FIG. 2 is provided at the end of 25, and when the valve element 23 is moved to the communication passage 32 side by the rotation of the screw rod 25, the valve element 23 is attached to the partition projection 34. The communication passage 32 can be closed by fitting. In the figure, 37 is a hole for processing, 38 is a blind plate that closes the hole 37, 26
Is the same handle as shown in FIG.
上述した吸気量調整弁40では、ハンドル26によりねじ棒
25を回転させることで弁体23がバルブボデー35内を移動
し、連通路32の開閉を行ない、連通路32を通る空気量を
調整する。第二実施例に係る吸気量調整弁40も前述した
吸気量調整弁30と同様に外部への取外しが容易に行なえ
るものである。In the intake air amount adjusting valve 40 described above, the handle 26
By rotating 25, the valve body 23 moves in the valve body 35, the communication passage 32 is opened and closed, and the amount of air passing through the communication passage 32 is adjusted. The intake air amount adjusting valve 40 according to the second embodiment can also be easily removed to the outside like the intake air amount adjusting valve 30 described above.
G.考案の効果 本考案の貫流水車の吸気装置は、放水庭の水面上とラン
ナの空転部とを連通路で連通したので、放水庭部の空気
をランナの空転部に供給することができる。この結果、
ランナへの水の巻き込みを阻止して空気を水車室内に供
給し、水と空気の流れを整え水車効率向上が図れる。ま
た、放水庭と水車室内とで空気を循環させるため、空気
の補給や放水庭の空気抜きが不要で、吸気音が生じない
静粛な運転が可能になる。また、吸気量調整弁を設けた
ことにより水位が上昇しても水の逆流がなく、負荷急変
時等の水漏れが防げる。また、吸気量調整弁を連通路の
外部に開口する開口部に取付けたので、取付け取外しが
容易に行なえ、水車を据付けた状態で吸気装置の点検、
保守が可能となる。G. Effect of the Invention Since the intake device of the once-through turbine of the present invention connects the water surface of the discharge yard and the idle part of the runner with the communication passage, the air of the discharge yard can be supplied to the idle part of the runner. . As a result,
By preventing the entrainment of water in the runner and supplying air into the turbine interior, the flow of water and air can be adjusted to improve turbine efficiency. In addition, since air is circulated between the water discharge yard and the water turbine room, there is no need to replenish the air or remove air from the water discharge yard, which enables quiet operation without generation of intake noise. Further, since the intake air amount adjusting valve is provided, there is no backflow of water even when the water level rises, and water leakage can be prevented when the load suddenly changes. Also, since the intake air amount adjusting valve is attached to the opening that opens to the outside of the communication passage, it can be easily installed and removed, and the intake device can be inspected with the water turbine installed.
Maintenance is possible.
第１図は本考案の第一実施例に係る吸気装置を備えた貫
流水車の断面図、第２図は吸気量調整弁取付部の拡大
図、第３図は本考案の第二実施例に係る吸気装置におけ
る吸気量調整弁取付部の断面図、第４図は第３図中のIV
-IV線矢視図、第５図は従来の貫流水車の一部破断斜視
図である。 図面中、 １はランナ、７は放水管、11は放水庭、16,32は連通
路、17,33は開口部、20,35はバルブボデー、23は弁体、
26はハンドル、30,40は吸気量調整弁である。1 is a sectional view of a once-through turbine equipped with an intake device according to a first embodiment of the present invention, FIG. 2 is an enlarged view of an intake amount adjusting valve mounting portion, and FIG. 3 is a second embodiment of the present invention. FIG. 4 is a sectional view of the intake amount adjusting valve mounting portion in the intake device, and FIG.
-IV line arrow view, FIG. 5 is a partially broken perspective view of the conventional once-through water turbine. In the drawing, 1 is a runner, 7 is a discharge pipe, 11 is a discharge garden, 16 and 32 are communication passages, 17 and 33 are openings, 20 and 35 are valve bodies, 23 is a valve body,
26 is a handle, and 30 and 40 are intake air amount adjusting valves.
Claims (1)
を水車室ケーシングに回転自在に支持し、該ランナを回
転させた水を放水庭に放水する貫流水車において、水が
進入する部位の回転方向後側と水が排出される部位の回
転方向前側との間における前記ランナの部位を、前記放
水庭の水面上部との間で連通路を介して連通し、該連通
路に外部に開口する開口部を形成し、該開口部に前記連
通路の開閉を行なう吸気量調整弁を取付け、該吸気量調
整弁の開閉操作を外部から行なう操作手段を該吸気量調
整弁に設けたことを特徴とする貫流水車の吸気装置。1. In a once-through water turbine in which a runner in which a runner blade is arranged in a cylindrical shape is rotatably supported in a turbine casing, and the water obtained by rotating the runner is discharged to a water discharge yard, rotation of a portion where water enters. The runner portion between the rear side in the direction and the front side in the rotation direction of the portion from which water is discharged communicates with the upper surface of the water surface of the discharge yard via a communication passage, and opens to the communication passage to the outside. An opening is formed, an intake air amount adjusting valve for opening and closing the communication passage is attached to the opening, and an operating means for opening and closing the intake air amount adjusting valve is provided on the intake air amount adjusting valve. Intake device for once-through turbines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988132279U JPH0732941Y2 (en) | 1988-10-12 | 1988-10-12 | Intake device for once-through turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988132279U JPH0732941Y2 (en) | 1988-10-12 | 1988-10-12 | Intake device for once-through turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0252975U JPH0252975U (en) | 1990-04-17 |
| JPH0732941Y2 true JPH0732941Y2 (en) | 1995-07-31 |
Family
ID=31389094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988132279U Expired - Fee Related JPH0732941Y2 (en) | 1988-10-12 | 1988-10-12 | Intake device for once-through turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0732941Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2558315Y2 (en) * | 1989-02-20 | 1997-12-24 | 株式会社明電舎 | Once-through water wheel |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622300Y2 (en) * | 1980-02-28 | 1987-01-20 | ||
| JPH0429087Y2 (en) * | 1986-04-16 | 1992-07-15 | ||
| JPS6327098U (en) * | 1986-08-05 | 1988-02-22 |
-
1988
- 1988-10-12 JP JP1988132279U patent/JPH0732941Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0252975U (en) | 1990-04-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |