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JPS57163168A - Switching method of operating mode in water turbine - Google Patents

Switching method of operating mode in water turbine

Info

Publication number
JPS57163168A
JPS57163168A JP56046487A JP4648781A JPS57163168A JP S57163168 A JPS57163168 A JP S57163168A JP 56046487 A JP56046487 A JP 56046487A JP 4648781 A JP4648781 A JP 4648781A JP S57163168 A JPS57163168 A JP S57163168A
Authority
JP
Japan
Prior art keywords
opening
turbine
shaped part
mode
pump
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.)
Granted
Application number
JP56046487A
Other languages
Japanese (ja)
Other versions
JPH0122475B2 (en
Inventor
Hisao Kuwabara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56046487A priority Critical patent/JPS57163168A/en
Publication of JPS57163168A publication Critical patent/JPS57163168A/en
Publication of JPH0122475B2 publication Critical patent/JPH0122475B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B15/00—Controlling
    • F03B15/02—Controlling by varying liquid flow
    • F03B15/04—Controlling by varying liquid flow of turbines
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Water Turbines (AREA)

Abstract

PURPOSE:To switch the operation mode of water turbin in a prompt and smooth manner, by opening a flow control valve rapidly to a no-load opening or to a greater opening so that an S-shaped part of the characteristic curves of flow rate and torque is etingished substantially. CONSTITUTION:In switching the mode of operation f a reversible pump-turbine from its condenser operation to power generating operation, air is removed from a runner chamber, and then guide vanes are opened at a certain high speed. Here, providing that the operating point of the pump-turbine has entered into an S-shaped part at a point P1 of a characteristic curve 6A and if the guide vane opening speed is kept high, the operating point gets out of the characteristic curve 6A but gets into another characteritic curve 7A corresponding to a greater opening angle, along a transient path shown by the dotted line in the drawing. Therefore, rapid transition to pumping flow is not caused since the S- shaped part does not exist substantially in the operational range of the pump- turbine at the time of switching the mode of its operation.
JP56046487A 1981-03-31 1981-03-31 Switching method of operating mode in water turbine Granted JPS57163168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56046487A JPS57163168A (en) 1981-03-31 1981-03-31 Switching method of operating mode in water turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56046487A JPS57163168A (en) 1981-03-31 1981-03-31 Switching method of operating mode in water turbine

Publications (2)

Publication Number Publication Date
JPS57163168A true JPS57163168A (en) 1982-10-07
JPH0122475B2 JPH0122475B2 (en) 1989-04-26

Family

ID=12748562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56046487A Granted JPS57163168A (en) 1981-03-31 1981-03-31 Switching method of operating mode in water turbine

Country Status (1)

Country Link
JP (1) JPS57163168A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440946A (en) * 1977-09-07 1979-03-31 Hitachi Ltd Controlling method for pump waterwheel
JPS6323388A (en) * 1986-07-16 1988-01-30 富士写真フイルム株式会社 X-y plotter with drilling mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440946A (en) * 1977-09-07 1979-03-31 Hitachi Ltd Controlling method for pump waterwheel
JPS6323388A (en) * 1986-07-16 1988-01-30 富士写真フイルム株式会社 X-y plotter with drilling mechanism

Also Published As

Publication number Publication date
JPH0122475B2 (en) 1989-04-26

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