JPS578365A - Control of hydraulic machinery in cutting-off of waterwheel load - Google Patents

Control of hydraulic machinery in cutting-off of waterwheel load

Info

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
Application number
JP8100880A
Other languages
Japanese (ja)
Inventor
Ichiro Yamagata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8100880A priority Critical patent/JPS578365A/en
Publication of JPS578365A publication Critical patent/JPS578365A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro 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
JP8100880A 1980-06-16 1980-06-16 Control of hydraulic machinery in cutting-off of waterwheel load Pending JPS578365A (en)

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)

* Cited by examiner, † Cited by third party
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)

Cited By (2)

* Cited by examiner, † Cited by third party
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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