JPS52149536A - Hydraulic control circuit for guide vane of hydraulic machinery - Google Patents

Hydraulic control circuit for guide vane of hydraulic machinery

Info

Publication number
JPS52149536A
JPS52149536A JP6557576A JP6557576A JPS52149536A JP S52149536 A JPS52149536 A JP S52149536A JP 6557576 A JP6557576 A JP 6557576A JP 6557576 A JP6557576 A JP 6557576A JP S52149536 A JPS52149536 A JP S52149536A
Authority
JP
Japan
Prior art keywords
hydraulic
control circuit
guide vane
machinery
hydraulic control
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
JP6557576A
Other languages
Japanese (ja)
Inventor
Katsumi Senoo
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 JP6557576A priority Critical patent/JPS52149536A/en
Publication of JPS52149536A publication Critical patent/JPS52149536A/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 Water Turbines (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To maintain constantly proper pressure for a long period of operation by introducing oil pressure into the closed side cylinder through a pressure reducing valve when the guide vanes are almost totally closed.
COPYRIGHT: (C)1977,JPO&Japio
JP6557576A 1976-06-07 1976-06-07 Hydraulic control circuit for guide vane of hydraulic machinery Pending JPS52149536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6557576A JPS52149536A (en) 1976-06-07 1976-06-07 Hydraulic control circuit for guide vane of hydraulic machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6557576A JPS52149536A (en) 1976-06-07 1976-06-07 Hydraulic control circuit for guide vane of hydraulic machinery

Publications (1)

Publication Number Publication Date
JPS52149536A true JPS52149536A (en) 1977-12-12

Family

ID=13290932

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6557576A Pending JPS52149536A (en) 1976-06-07 1976-06-07 Hydraulic control circuit for guide vane of hydraulic machinery

Country Status (1)

Country Link
JP (1) JPS52149536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111237271A (en) * 2020-01-07 2020-06-05 华自科技股份有限公司 High oil pressure cartridge formula air-vent valve hydraulic control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111237271A (en) * 2020-01-07 2020-06-05 华自科技股份有限公司 High oil pressure cartridge formula air-vent valve hydraulic control system

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