JPS64363A - Protective device for hydraulic machine - Google Patents

Protective device for hydraulic machine

Info

Publication number
JPS64363A
JPS64363A JP62154382A JP15438287A JPS64363A JP S64363 A JPS64363 A JP S64363A JP 62154382 A JP62154382 A JP 62154382A JP 15438287 A JP15438287 A JP 15438287A JP S64363 A JPS64363 A JP S64363A
Authority
JP
Japan
Prior art keywords
discharge valve
flow control
valve
hydraulic machine
control valve
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
JP62154382A
Other languages
Japanese (ja)
Other versions
JPH01363A (en
Inventor
Akihiro Sakayori
Hisao Kuwabara
Tatsuhiro Kamisako
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 JP62-154382A priority Critical patent/JPH01363A/en
Priority claimed from JP62-154382A external-priority patent/JPH01363A/en
Publication of JPS64363A publication Critical patent/JPS64363A/en
Publication of JPH01363A publication Critical patent/JPH01363A/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)

Abstract

PURPOSE: To prevent the abnormal water pressure rise by opening a discharge valve automatically and forcibly after closing a flow control valve when the discharge valve arranged in the same hydraulic steel pipe as the hydraulic machine for the flow control valve of the hydraulic machine.
CONSTITUTION: A hydraulic machine with a flow control valve is protected by a discharge valve 2 arranged in the same branch pipe 1 as the hydraulic machine and responding to the flow control valve. In this case, a pressure switch 3 detecting the water pressure in the branch pipe 1 on the upstream side of the discharge valve 2 is provided as a means to detect the malfunction of the discharge valve 2. An oil pressure switching solenoid valve 4, an adjustable orifice 5 arranged on the oil discharge side, and a differential piston cylinder 6 are provided respectively as a forced discharge valve opening device which is an operating mechanism operated by the detection signal of the pressure switch 3. On the other hand, an auxiliary servo-motor 9 is driven via a motor 8 so that the opening of the discharge valve 2 is controlled by a control unit 7 based on the opening of the flow control valve.
COPYRIGHT: (C)1989,JPO&Japio
JP62-154382A 1987-06-23 Hydraulic machinery protection device Pending JPH01363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-154382A JPH01363A (en) 1987-06-23 Hydraulic machinery protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-154382A JPH01363A (en) 1987-06-23 Hydraulic machinery protection device

Publications (2)

Publication Number Publication Date
JPS64363A true JPS64363A (en) 1989-01-05
JPH01363A JPH01363A (en) 1989-01-05

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946310A (en) * 1987-06-09 1990-08-07 Akzo N.V. Dome for waste dumps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946310A (en) * 1987-06-09 1990-08-07 Akzo N.V. Dome for waste dumps

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