JP5134227B2 - 水力機械の冷却水系統 - Google Patents
水力機械の冷却水系統 Download PDFInfo
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- JP5134227B2 JP5134227B2 JP2006258445A JP2006258445A JP5134227B2 JP 5134227 B2 JP5134227 B2 JP 5134227B2 JP 2006258445 A JP2006258445 A JP 2006258445A JP 2006258445 A JP2006258445 A JP 2006258445A JP 5134227 B2 JP5134227 B2 JP 5134227B2
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- Japan
- Prior art keywords
- cooling water
- water
- draft tube
- hydraulic machine
- pump turbine
- 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.)
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- 239000000498 cooling water Substances 0.000 title claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 238000010248 power generation Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- 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
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- Hydraulic Turbines (AREA)
Description
例えば発電運転のように水力機械を水中運転させる場合は、水力機械から大量の水が放水されるので、ドラフトチューブ内の温度がほとんど上昇せず、ドラフトチューブの取水口から取水する冷却水の温度も機器の冷却に必要な適正温度となる。ところが、例えば調相運転などのように水力機械を空中運転させる(詳細には、水力機械のランナ室内に圧縮空気を入れた状態で回す)場合は、水力機械から放水される流れがないため、排水口からの使用済みの冷却水(すなわち比較的暖かい水)がドラフトチューブ内に滞留し、次第にドラフトチューブ内の水温が上昇する。そして、ついにはドラフトチューブ内の水温すなわち機器に供給する冷却水の温度が適正温度を上回り、機器保護のために水力機械が運転できない事態となるため、水力機械の空中運転を長時間に亘って行うことが困難であった。
図1及び図2は、本発明の水力機械の冷却水系統の一実施形態が適用された水力発電システムの概略構造を表す図である。なお、図1はポンプ水車が空中運転した状態を表し、図2はポンプ水車が水中運転した状態を表す。
4 ドラフトチューブ
5 放水流路
7 機器
8 冷却水系統
9 取水口
10 排水口
Claims (1)
- 水車又はポンプ水車の出口側に接続したエルボ式のドラフトチューブを備えた水力機械の冷却水系統において、
前記ドラフトチューブにおける最下方位置に設けられ、機器に供給する冷却水を取水する取水口と、
前記ドラフトチューブと下池との間に接続され、流路全体が前記ドラフトチューブから前記下池まで上り勾配となるように設けられた放水流路と、
前記放水流路の流路断面における最上方位置に設けられ、前記機器で使用された冷却水を前記放水流路に排水する排水口とを備えたことを特徴とする水力機械の冷却水系統。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006258445A JP5134227B2 (ja) | 2006-09-25 | 2006-09-25 | 水力機械の冷却水系統 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006258445A JP5134227B2 (ja) | 2006-09-25 | 2006-09-25 | 水力機械の冷却水系統 |
Publications (2)
Publication Number | Publication Date |
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JP2008075617A JP2008075617A (ja) | 2008-04-03 |
JP5134227B2 true JP5134227B2 (ja) | 2013-01-30 |
Family
ID=39347937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006258445A Active JP5134227B2 (ja) | 2006-09-25 | 2006-09-25 | 水力機械の冷却水系統 |
Country Status (1)
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JP (1) | JP5134227B2 (ja) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51130821A (en) * | 1975-05-09 | 1976-11-13 | Hitachi Ltd | Water supply controlling method of water power plant and its device |
JPS57129266A (en) * | 1981-02-04 | 1982-08-11 | Hitachi Ltd | Coolant supply switching controller for hydraulic machine |
JPS5825678A (ja) * | 1981-08-10 | 1983-02-15 | Konishiroku Photo Ind Co Ltd | 複写機等の記録紙案内装置 |
JPH08144923A (ja) * | 1994-11-21 | 1996-06-04 | Toshiba Corp | 水力機械 |
JP3557278B2 (ja) * | 1995-04-14 | 2004-08-25 | 中部電力株式会社 | 水力機械の運転方法 |
-
2006
- 2006-09-25 JP JP2006258445A patent/JP5134227B2/ja active Active
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JP2008075617A (ja) | 2008-04-03 |
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