JPS578365A - Control of hydraulic machinery in cutting-off of waterwheel load - Google Patents
Control of hydraulic machinery in cutting-off of waterwheel loadInfo
- Publication number
- JPS578365A JPS578365A JP8100880A JP8100880A JPS578365A JP S578365 A JPS578365 A JP S578365A JP 8100880 A JP8100880 A JP 8100880A JP 8100880 A JP8100880 A JP 8100880A JP S578365 A JPS578365 A JP S578365A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- draft
- jet
- load
- opened
- 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
- Control Of Water Turbines (AREA)
Abstract
PURPOSE: To prevent generation of noise and vibration by allowing jet pipes to be opened on the inner wall of the draft pipe in the vicinity of the runner exit port and allowing the high pressure water to jet-out from the jet pipe when load is cut-off.
CONSTITUTION: A plurality of jet pipes 8 are arranged and opened at equal intervals on the inner wall in the upper part of a draft pipe 7. These jet pipes 8 are collected by an annular water pipe 9 and connected to a casing 1 through the connecting pipe 11 equipped with an automatic valve 10. The automatic valve 10 is ON-OFF-operated by the signal instruction from the over-speed detector 12 installed on a power generator 6. When a load is cut-off due to some reason, a runner 4 is accelerated sharply, and the detector 12 detects this sharp acceleration, then the automatic valve 10 is opened, and the high pressure water is jetted-out into the draft pipe 7 through the annular water pipe 9. The swirling water flow induced by the runner due to ejection in reverse direction is deenergized. Therefore, the drop of the water pressure at the center of the draft pipe is reduced, and formation of absolute vacuum range is prevented, and thus noise and vibration can be restricted without setting a large draft height of a hydraulic machinery.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8100880A JPS578365A (en) | 1980-06-16 | 1980-06-16 | Control of hydraulic machinery in cutting-off of waterwheel load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8100880A JPS578365A (en) | 1980-06-16 | 1980-06-16 | Control of hydraulic machinery in cutting-off of waterwheel load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS578365A true JPS578365A (en) | 1982-01-16 |
Family
ID=13734476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8100880A Pending JPS578365A (en) | 1980-06-16 | 1980-06-16 | Control of hydraulic machinery in cutting-off of waterwheel load |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS578365A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007142709A1 (en) | 2006-06-09 | 2007-12-13 | Andritz Technology And Asset Management Gmbh | Liquid control jet during part load operation in a hydraulic turbine |
| RU2470178C1 (en) * | 2011-07-12 | 2012-12-20 | Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") | Device for increasing stable operation of axial-radial hydraulic turbine (versions) |
-
1980
- 1980-06-16 JP JP8100880A patent/JPS578365A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007142709A1 (en) | 2006-06-09 | 2007-12-13 | Andritz Technology And Asset Management Gmbh | Liquid control jet during part load operation in a hydraulic turbine |
| RU2470178C1 (en) * | 2011-07-12 | 2012-12-20 | Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") | Device for increasing stable operation of axial-radial hydraulic turbine (versions) |
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