JPS57212373A - Pump controlling method - Google Patents

Pump controlling method

Info

Publication number
JPS57212373A
JPS57212373A JP56095363A JP9536381A JPS57212373A JP S57212373 A JPS57212373 A JP S57212373A JP 56095363 A JP56095363 A JP 56095363A JP 9536381 A JP9536381 A JP 9536381A JP S57212373 A JPS57212373 A JP S57212373A
Authority
JP
Japan
Prior art keywords
water level
pump
intake valve
detector
air
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
JP56095363A
Other languages
Japanese (ja)
Inventor
Giichi Ito
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 JP56095363A priority Critical patent/JPS57212373A/en
Publication of JPS57212373A publication Critical patent/JPS57212373A/en
Pending 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
    • F03B15/06—Regulating, i.e. acting automatically
    • F03B15/14—Regulating, i.e. acting automatically by or of water level
    • 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)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE:To attain economic, safe and reliable operation of a pump, by detecting malfunctioning of a water level detector at an early stage by providing a timing control circuit adapted for opening a water level depressor intake valve for a predetermined while in a water level controlling system including a water level depressor. CONSTITUTION:When a main control switch is turned to ''operation'' side in starting operation of a pump, a pump operating relay is energized on condition that conditions for starting operation of the pump are satisfied. Resultantly, an air intake valve 19 is opened and compressed air in an air tank 13 is supplied to a runner chamber 8 via an air supply pipe 17, so that the water level in the runner chamber 8 is depressd to the position of a detector 11 of a water level detector 9. When the water level is lowered to a predetermined position, the electric circuit of the detector 11 is opened. This causes closing of the intake valve 19, so that supply of compressed air to the runner chamber 8 is stopped. Therefore, the air intake valve 19 is opened only for a predetermined while during water level depressing operation required before starting pumping operation.
JP56095363A 1981-06-22 1981-06-22 Pump controlling method Pending JPS57212373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56095363A JPS57212373A (en) 1981-06-22 1981-06-22 Pump controlling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56095363A JPS57212373A (en) 1981-06-22 1981-06-22 Pump controlling method

Publications (1)

Publication Number Publication Date
JPS57212373A true JPS57212373A (en) 1982-12-27

Family

ID=14135540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56095363A Pending JPS57212373A (en) 1981-06-22 1981-06-22 Pump controlling method

Country Status (1)

Country Link
JP (1) JPS57212373A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126082A (en) * 1982-12-29 1984-07-20 Hitachi Ltd Push-down water level control device for hydraulic machine
WO2018177639A1 (en) * 2017-03-29 2018-10-04 Voith Patent Gmbh Hydraulic machine having a device for measuring the water level in the intake pipe and method for drainage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126082A (en) * 1982-12-29 1984-07-20 Hitachi Ltd Push-down water level control device for hydraulic machine
JPH0429877B2 (en) * 1982-12-29 1992-05-20
WO2018177639A1 (en) * 2017-03-29 2018-10-04 Voith Patent Gmbh Hydraulic machine having a device for measuring the water level in the intake pipe and method for drainage
US11280310B2 (en) 2017-03-29 2022-03-22 Voith Patent Gmbh Hydraulic machine having a device for measuring the water level in the intake pipe and method for drainage

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