JPS5773864A - Protection of hydraulic machinery - Google Patents

Protection of hydraulic machinery

Info

Publication number
JPS5773864A
JPS5773864A JP55148394A JP14839480A JPS5773864A JP S5773864 A JPS5773864 A JP S5773864A JP 55148394 A JP55148394 A JP 55148394A JP 14839480 A JP14839480 A JP 14839480A JP S5773864 A JPS5773864 A JP S5773864A
Authority
JP
Japan
Prior art keywords
flow rate
relay
cooling water
main
operates
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
JP55148394A
Other languages
Japanese (ja)
Other versions
JPS628635B2 (en
Inventor
Asami Sato
Nobusuke Takagi
Hiroshi Okumura
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 JP55148394A priority Critical patent/JPS5773864A/en
Publication of JPS5773864A publication Critical patent/JPS5773864A/en
Publication of JPS628635B2 publication Critical patent/JPS628635B2/ja
Granted 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)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Hydraulic Turbines (AREA)

Abstract

PURPOSE: To prevent unnecessary stop of a main engine due to discharged sand by suspending the function of a flow rate relay during the time when the sand discharging valve of a strainer is opened, when reduction of the flow rate of the flow rate relay is detected.
CONSTITUTION: When the amount of cooling water to the sealing part reduces during the main machinery is in idle operation, the main machinery is halted by a relay 80X. When the flow rate relay 80RS for the runner seal part cooling water or the flow rate relay 80SS for the main shaft sealing apparatus cooling water operates during the main machinery operates in other than idling or if one of the all flow rate relays 80RS, 80SS, 80TG, and 80TH operates during the main machinery operates, if reduction of the amount of cooling water is temporary because of opening of a sand discharging valve, unnecessary stop of the main machinery can be avoided by a timing relay 80XT or 80YT.
COPYRIGHT: (C)1982,JPO&Japio
JP55148394A 1980-10-24 1980-10-24 Protection of hydraulic machinery Granted JPS5773864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55148394A JPS5773864A (en) 1980-10-24 1980-10-24 Protection of hydraulic machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55148394A JPS5773864A (en) 1980-10-24 1980-10-24 Protection of hydraulic machinery

Publications (2)

Publication Number Publication Date
JPS5773864A true JPS5773864A (en) 1982-05-08
JPS628635B2 JPS628635B2 (en) 1987-02-24

Family

ID=15451790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55148394A Granted JPS5773864A (en) 1980-10-24 1980-10-24 Protection of hydraulic machinery

Country Status (1)

Country Link
JP (1) JPS5773864A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04186857A (en) * 1990-11-21 1992-07-03 Nec Kyushu Ltd Semiconductor supplying equipment of autohandler

Also Published As

Publication number Publication date
JPS628635B2 (en) 1987-02-24

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