JPS575564A - Main shaft seal water pressure reducing apparatus of hydraulic machinery - Google Patents
Main shaft seal water pressure reducing apparatus of hydraulic machineryInfo
- Publication number
- JPS575564A JPS575564A JP7781980A JP7781980A JPS575564A JP S575564 A JPS575564 A JP S575564A JP 7781980 A JP7781980 A JP 7781980A JP 7781980 A JP7781980 A JP 7781980A JP S575564 A JPS575564 A JP S575564A
- Authority
- JP
- Japan
- Prior art keywords
- main shaft
- water
- runner
- water pressure
- shaft seal
- 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
Abstract
PURPOSE: To reduce the main shaft seal water pressure without installing a drainage pipe in the upper part of the top cover which is installed on the back surface of the first stage runner, by forming a drainage hole inside the main shaft equipped with a runner, in a multistage pump water wheel etc.
CONSTITUTION: Inside the main shaft 15 which is equipped with the first and the second runners 2 and 3, a drainage hole 17 is formed which communicates the space 6 between a main shaft seal water apparatus 9 and the first runner 2 attaching area to the opening 16 at the end of the shaft. As the first runner 2 and the second runner 3 revolves with the main shaft 15, water is pumped up from a draft tube 14 to a casing 4 through a return guide 12. At this time, the water in the space 6 is highly pressurized, but the excessive water is drained from the drainage hole 17, so the water pressure in the space 16 can be reduced. Therefore, the water pressure in the vicinity of the apparatus 9 can be reduced, and water sealing effect can be still developed sufficiently, and complicated piping in the neighborhood of the upper surface of the top cover 7 can be omitted.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7781980A JPS575564A (en) | 1980-06-11 | 1980-06-11 | Main shaft seal water pressure reducing apparatus of hydraulic machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7781980A JPS575564A (en) | 1980-06-11 | 1980-06-11 | Main shaft seal water pressure reducing apparatus of hydraulic machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS575564A true JPS575564A (en) | 1982-01-12 |
Family
ID=13644634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7781980A Pending JPS575564A (en) | 1980-06-11 | 1980-06-11 | Main shaft seal water pressure reducing apparatus of hydraulic machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS575564A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4588352A (en) * | 1984-04-12 | 1986-05-13 | Kabushiki Kaisha Toshiba | Multistage hydraulic machine |
| CN112983717A (en) * | 2021-03-03 | 2021-06-18 | 广西森格自动化科技股份有限公司 | Intelligent water drainage method for top cover of water turbine |
-
1980
- 1980-06-11 JP JP7781980A patent/JPS575564A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4588352A (en) * | 1984-04-12 | 1986-05-13 | Kabushiki Kaisha Toshiba | Multistage hydraulic machine |
| CN112983717A (en) * | 2021-03-03 | 2021-06-18 | 广西森格自动化科技股份有限公司 | Intelligent water drainage method for top cover of water turbine |
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