JPS6415469A - Water level depressor air exhausting device for pump - Google Patents

Water level depressor air exhausting device for pump

Info

Publication number
JPS6415469A
JPS6415469A JP62170973A JP17097387A JPS6415469A JP S6415469 A JPS6415469 A JP S6415469A JP 62170973 A JP62170973 A JP 62170973A JP 17097387 A JP17097387 A JP 17097387A JP S6415469 A JPS6415469 A JP S6415469A
Authority
JP
Japan
Prior art keywords
pump
exhaust
discharge
air chamber
pipe
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
JP62170973A
Other languages
Japanese (ja)
Inventor
Sumio Sudo
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 JP62170973A priority Critical patent/JPS6415469A/en
Publication of JPS6415469A publication Critical patent/JPS6415469A/en
Pending legal-status Critical Current

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 Non-Positive-Displacement Pumps (AREA)
  • Control Of Water Turbines (AREA)

Abstract

PURPOSE:To mitigate the water hammer phenomenon at the exhaust completion by providing an air chamber with an orifice section squeezing the flow cross section of a fluid on an exhaust port communicated to a pump casing or a discharge pipe and connecting an exhaust pipe to the upper section of the air chamber. CONSTITUTION:A pump is started, with a discharge valve 6 fully closed, the compressed air fed to the pump and a discharge pope 5, and the water level depressed below an impeller 1 at the time of its start. When the rotating speed of the pump is sufficiently increased, exhaust valves 9, 9' of exhaust pipes 8, 8, are opened, the air in the pump and the discharge pipe 5 between the pump and discharge valve 6 is exhausted, and the discharge valve 6 is opened when the exhausting is completed to start the water feed operation. An air chamber 10 communicated to the discharge pipe 5 via an orifice 10a is provided at the top section of the discharge pipe 5, the exhaust pipe 8 is connected to the upper section of this air chamber 10 via an exhaust pipe inlet 10b, thereby the quick rise of the pressure in the pump is mitigated at the time of the exhaust completion.
JP62170973A 1987-07-10 1987-07-10 Water level depressor air exhausting device for pump Pending JPS6415469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62170973A JPS6415469A (en) 1987-07-10 1987-07-10 Water level depressor air exhausting device for pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62170973A JPS6415469A (en) 1987-07-10 1987-07-10 Water level depressor air exhausting device for pump

Publications (1)

Publication Number Publication Date
JPS6415469A true JPS6415469A (en) 1989-01-19

Family

ID=15914790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62170973A Pending JPS6415469A (en) 1987-07-10 1987-07-10 Water level depressor air exhausting device for pump

Country Status (1)

Country Link
JP (1) JPS6415469A (en)

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