JPS5523330A - Hydraulic machine - Google Patents

Hydraulic machine

Info

Publication number
JPS5523330A
JPS5523330A JP9462978A JP9462978A JPS5523330A JP S5523330 A JPS5523330 A JP S5523330A JP 9462978 A JP9462978 A JP 9462978A JP 9462978 A JP9462978 A JP 9462978A JP S5523330 A JPS5523330 A JP S5523330A
Authority
JP
Japan
Prior art keywords
water
flow
hydraulic machine
circulation flow
machine
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
JP9462978A
Other languages
Japanese (ja)
Inventor
Seiichi Tanabe
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 JP9462978A priority Critical patent/JPS5523330A/en
Publication of JPS5523330A publication Critical patent/JPS5523330A/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

  • Hydraulic Turbines (AREA)

Abstract

PURPOSE: To provide a hydraulic machine, in which recesses having a shape conforming to the passage for reversing circulation flow of water are formed in the vicinity of the water-flow diverting portion of the seal arranged in a hollow space that is formed between the runner and the casing, so as to reduce the amount of water leaked through the seal, whereby it is enabled to improve efficiency of the hydraulic machine.
CONSTITUTION: In a hydaulic machine such as hydraulic pump turbine of this invention, a first arcuate recess 30 and a second arcuate recess 31 having a shape conforming to the passage for reversing the circulation flow 20 of water are formed in the vicinity water-flow diverting portion 35 in the surface of upper cover 5 in back-pressure chamber 6 which is formed between the runner and the casing of hydraulic machine. By the function of these recesses 30, 31, speed of circulation flow 20 is increased at the portion 35, so that development of turbulence 36 is promoted and resistance against water flow 21 through portion 35 is increased. Therefore, it is enabled to remarkably reduce the amount of water leaked through chamber 6 and to improve efficiency of the hydraulic pump turbine.
COPYRIGHT: (C)1980,JPO&Japio
JP9462978A 1978-08-04 1978-08-04 Hydraulic machine Pending JPS5523330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9462978A JPS5523330A (en) 1978-08-04 1978-08-04 Hydraulic machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9462978A JPS5523330A (en) 1978-08-04 1978-08-04 Hydraulic machine

Publications (1)

Publication Number Publication Date
JPS5523330A true JPS5523330A (en) 1980-02-19

Family

ID=14115545

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9462978A Pending JPS5523330A (en) 1978-08-04 1978-08-04 Hydraulic machine

Country Status (1)

Country Link
JP (1) JPS5523330A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153863A (en) * 1979-05-16 1980-12-01 Toshiba Corp Hydraulic machine
JP2008038609A (en) * 2006-08-01 2008-02-21 Hitachi Ltd Sealing device of water turbine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52148743A (en) * 1976-06-07 1977-12-10 Hitachi Ltd Contact detecting method for runner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52148743A (en) * 1976-06-07 1977-12-10 Hitachi Ltd Contact detecting method for runner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153863A (en) * 1979-05-16 1980-12-01 Toshiba Corp Hydraulic machine
JP2008038609A (en) * 2006-08-01 2008-02-21 Hitachi Ltd Sealing device of water turbine

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