JPH1122617A - Runner blade of propeller water turbine - Google Patents
Runner blade of propeller water turbineInfo
- Publication number
- JPH1122617A JPH1122617A JP9209586A JP20958697A JPH1122617A JP H1122617 A JPH1122617 A JP H1122617A JP 9209586 A JP9209586 A JP 9209586A JP 20958697 A JP20958697 A JP 20958697A JP H1122617 A JPH1122617 A JP H1122617A
- Authority
- JP
- Japan
- Prior art keywords
- runner blade
- earth
- runner
- main body
- liner
- 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
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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、プロペラ水車のラ
ンナ羽根の土砂摩耗に対する保護構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for protecting a runner blade of a propeller turbine against earth and sand wear.
【０００２】[0002]
【従来の技術】従来のプロペラ水車は図４のようになっ
ている。すなわち、内側上カバー１を貫通する回転軸に
取り付けられたランナボス２の周面に複数のランナ羽根
３が取り付けられている。ランナボス２の先には更にラ
ンナコーン４が取り付けられている。内側上カバー１か
ら所定の空間を隔てて下カバー５が設けられ、この下カ
バー５の先には上部吸出し管６が接続されている。内側
上カバー１と下カバー５の間の空間に流れ込んだ水流ａ
１はランナ羽根３を回転させ、上部吸出し管６に流下す
る。このとき、ランナ羽根３の外周と下カバー５の隙間
から漏水ａ２が発生する。そして水流ａ１中に土砂が含
まれているとランナ羽根３の外周が摩耗される。ランナ
羽根３の外周が一旦摩耗されると、その修理方法として
は、水車と発電機の回転部を外部へ抜き出し摩耗箇所を
溶接補修するしかないため、長期にわたる工事と多額の
費用を要する。2. Description of the Related Art A conventional propeller turbine is shown in FIG. That is, a plurality of runner blades 3 are attached to the peripheral surface of a runner boss 2 attached to a rotating shaft penetrating the inner upper cover 1. A runner cone 4 is further attached to the tip of the runner boss 2. A lower cover 5 is provided at a predetermined space from the inner upper cover 1, and an upper suction pipe 6 is connected to a tip of the lower cover 5. Water flow a flowing into the space between the inner upper cover 1 and the lower cover 5
1 rotates the runner blade 3 and flows down to the upper suction pipe 6. At this time, water leak a2 is generated from a gap between the outer periphery of the runner blade 3 and the lower cover 5. If the water flow a1 contains earth and sand, the outer periphery of the runner blade 3 is worn. Once the outer periphery of the runner blade 3 is worn, the only repair method is to pull out the rotating part of the water turbine and the generator to the outside and repair the worn part by welding, which requires a long-term construction and a large cost.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、土砂摩耗を
生じた場合に補修しやすいプロペラ水車のランナ羽根を
提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a propeller turbine runner blade that can be easily repaired when earth and sand wear occurs.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に本発明のプロペラ水車のランナ羽根は、羽根本体の外
周の土砂摩耗を生じやすい部分にプロテクトライナを着
脱可能に取り付けた構成とする。また、プロテクトライ
ナは羽根本体よりも耐摩耗性の高い材料から構成する。To achieve the above object, a runner blade of a propeller turbine according to the present invention has a structure in which a protect liner is detachably attached to a portion of the outer periphery of the blade body where sediment wear is likely to occur. The protect liner is made of a material having higher wear resistance than the blade body.
【０００５】本発明のランナ羽根は、土砂摩耗を起こし
やすい外周にプロテクトライナが着脱可能に取り付けら
れているので、摩耗量が限度を超えたときにはプロテク
トライナのみを取り外して補修あるいは新品と交換すれ
ばよく、補修を簡単に行うことができる。In the runner blade of the present invention, since the protect liner is detachably attached to the outer periphery where sediment wear is apt to occur, if the wear amount exceeds the limit, it is necessary to remove only the protect liner and repair or replace it with a new one. Well, repair can be done easily.
【０００６】[0006]
【発明の実施の形態】本発明の実施の形態を図１、図２
および図３に示す。これらの図に示すように、ランナ羽
根本体７１の外周を覆って上流側からプロテクトライナ
７２を取り付ける。取り付けは複数のボルト８による。
プロテクトライナ７２の材質はランナ羽根本体７１と同
じでもよいが、硬度のより高いものを用いれば、土砂摩
耗を低減することができる。プロテクトライナ７２の土
砂摩耗量が限度を超えたときには、ボルト８をゆるめて
羽根本体７１から取り外し、プロテクトライナ７２のみ
を肉盛り溶接補修しあるいは新品に代える。1 and 2 show an embodiment of the present invention.
And FIG. As shown in these figures, a protect liner 72 is attached from the upstream side so as to cover the outer periphery of the runner blade main body 71. Attachment is by a plurality of bolts 8.
The material of the protect liner 72 may be the same as that of the runner blade main body 71. However, if a material having higher hardness is used, earth and sand wear can be reduced. When the amount of earth and sand wear of the protector liner 72 exceeds the limit, the bolt 8 is loosened and removed from the blade body 71, and only the protector liner 72 is repaired by overlay welding or replaced with a new one.
【０００７】[0007]
【発明の効果】以上説明したところから明らかなように
本発明によれば、土砂摩耗が限度を超えたときには簡単
に補修できるプロペラ水車のランナ羽根を提供すること
ができる。As apparent from the above description, according to the present invention, it is possible to provide a runner blade of a propeller turbine that can be easily repaired when earth and sand wear exceeds a limit.
【図１】本発明の実施の形態のランナ羽根の断面図FIG. 1 is a sectional view of a runner blade according to an embodiment of the present invention.
【図２】本発明の実施の形態のランナ羽根を上流側から
見た図FIG. 2 is a view of the runner blade according to the embodiment of the present invention as viewed from the upstream side.
【図３】本発明の実施の形態のランナ羽根の外周部詳細
図FIG. 3 is a detailed view of the outer peripheral portion of the runner blade according to the embodiment of the present invention.
【図４】従来のプロペラ水車の断面図FIG. 4 is a sectional view of a conventional propeller turbine.
１…内側上カバー、 ２…ランナボス、 ３…ランナ羽
根、 ４…ランナコーン、 ５…下カバー、 ６…上部
吸出し管、 ７…ランナ羽根、 ７１…ランナ羽根本
体、 ７２…プロテクトライナ、 ８…ボルト、 ａ１
…水流、 ａ２…ランナーシールギャップからの漏水、
ｂ１…土砂摩耗。DESCRIPTION OF SYMBOLS 1 ... Inside upper cover, 2 ... Runner boss, 3 ... Runner blade, 4 ... Runner cone, 5 ... Lower cover, 6 ... Upper suction pipe, 7 ... Runner blade, 71 ... Runner blade main body, 72 ... Protect liner, 8 ... Bolt, a1
... water flow, a2 ... water leakage from the runner seal gap,
b1: Earth and sand wear.
Claims (2)
分にプロテクトライナを着脱可能に取り付けたことを特
徴とするプロペラ水車のランナ羽根。1. A runner blade for a propeller turbine, wherein a protect liner is detachably attached to a portion of the outer periphery of the blade body where sediment wear is likely to occur.
性の高い材料からなることを特徴とする請求項１記載の
プロペラ水車のランナ羽根。2. The runner blade for a propeller turbine according to claim 1, wherein the protector liner is made of a material having higher wear resistance than the blade main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9209586A JPH1122617A (en) | 1997-06-30 | 1997-06-30 | Runner blade of propeller water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9209586A JPH1122617A (en) | 1997-06-30 | 1997-06-30 | Runner blade of propeller water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1122617A true JPH1122617A (en) | 1999-01-26 |
Family
ID=16575295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9209586A Pending JPH1122617A (en) | 1997-06-30 | 1997-06-30 | Runner blade of propeller water turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1122617A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014079795A (en) * | 2012-10-18 | 2014-05-08 | Kyodo Alumi Kk | Helical structure and manufacturing method thereof |
-
1997
- 1997-06-30 JP JP9209586A patent/JPH1122617A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014079795A (en) * | 2012-10-18 | 2014-05-08 | Kyodo Alumi Kk | Helical structure and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |