JPS5510059A - Controlling method for inlet valve - Google Patents

Controlling method for inlet valve

Info

Publication number
JPS5510059A
JPS5510059A JP8307678A JP8307678A JPS5510059A JP S5510059 A JPS5510059 A JP S5510059A JP 8307678 A JP8307678 A JP 8307678A JP 8307678 A JP8307678 A JP 8307678A JP S5510059 A JPS5510059 A JP S5510059A
Authority
JP
Japan
Prior art keywords
valve body
intercepting
allows
water
speed
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
JP8307678A
Other languages
Japanese (ja)
Inventor
Tsunehiko Takakusaki
Masahide Nojima
Masanobu Araki
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 JP8307678A priority Critical patent/JPS5510059A/en
Publication of JPS5510059A publication Critical patent/JPS5510059A/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 perform the interception of the load on the water-wheel side and the interception of the inlet on the pump side stably and safely by varying the speed of closing a valve body, having the fixed turning position of the valve body as a boundary.
CONSTITUTION: The main valve body 11 of an inlet valve 5 is closed sharply due to interception instruction signal, with a closure speed determined by a control throttle valve 19. This closure speed is a value which allows the excessive speed increase in intercepting the load on the water-wheel side to be reduced as much as possible or allows the reverse revolution in intercepting the input on the pump side to be prevented. When the main valve body 11 is closed to a fixed turning position, a multicontact limit switch 34 which is linked to the output shaft of a main valve servo motor 15 closes, and a magnetic valve 31 operates, and a control throttle valve 30 is operated. Then, the main valve body 11 is closed with a closure speed faster than before. This closure speed allows the increase of pressure in a water pressure iron pipe in intercepting the load on the water-wheel side to be minimum or allows the decrease of pressure in an intake pipe in intercepting the input on the pump side to be minimum.
COPYRIGHT: (C)1980,JPO&Japio
JP8307678A 1978-07-10 1978-07-10 Controlling method for inlet valve Pending JPS5510059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8307678A JPS5510059A (en) 1978-07-10 1978-07-10 Controlling method for inlet valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8307678A JPS5510059A (en) 1978-07-10 1978-07-10 Controlling method for inlet valve

Publications (1)

Publication Number Publication Date
JPS5510059A true JPS5510059A (en) 1980-01-24

Family

ID=13792077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8307678A Pending JPS5510059A (en) 1978-07-10 1978-07-10 Controlling method for inlet valve

Country Status (1)

Country Link
JP (1) JPS5510059A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6437887B1 (en) 1999-03-02 2002-08-20 Fuji Photo Film Co., Ltd. Optical logic device and optical memory device
US6611367B1 (en) 1999-02-05 2003-08-26 Fuji Photo Film Co., Ltd. Surface plasmon optical modulator element
JP2012522940A (en) * 2009-04-01 2012-09-27 ダンフォス アクチ−セルスカブ How to operate the valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6611367B1 (en) 1999-02-05 2003-08-26 Fuji Photo Film Co., Ltd. Surface plasmon optical modulator element
US6437887B1 (en) 1999-03-02 2002-08-20 Fuji Photo Film Co., Ltd. Optical logic device and optical memory device
JP2012522940A (en) * 2009-04-01 2012-09-27 ダンフォス アクチ−セルスカブ How to operate the valve

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