JPS5564199A - Centrifugal diagonal flow pump - Google Patents

Centrifugal diagonal flow pump

Info

Publication number
JPS5564199A
JPS5564199A JP13453078A JP13453078A JPS5564199A JP S5564199 A JPS5564199 A JP S5564199A JP 13453078 A JP13453078 A JP 13453078A JP 13453078 A JP13453078 A JP 13453078A JP S5564199 A JPS5564199 A JP S5564199A
Authority
JP
Japan
Prior art keywords
pressure
cavitation
leading edge
clearance
vane leading
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
JP13453078A
Other languages
Japanese (ja)
Inventor
Haruo Sankai
Yutaro Matsuura
Masahiro Mase
Koji Nakagawa
Junichi Kobayashi
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 JP13453078A priority Critical patent/JPS5564199A/en
Publication of JPS5564199A publication Critical patent/JPS5564199A/en
Pending legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To prevent a cavitation from occurring by injecting a pressure water working in a clearance formed with a front or back shroud and a casing onto such portion of vane leading edge as is easy to invite cavitation.
CONSTITUTION: A suction pressure of a pump or an inlet pressure of an impeller is detected beforehand on a pressure detector 12, and where the pressure comes below saturated steam pressure, the detection signal in introduced to a driver 11, and a wear ring 10 is moved to allow the opening end of a connection hole 8 to be through to a clearance 9. A pressure water working in the clearance 9 is injected onto such portion of a vane leading edge as is easy to invite a cavitation by way of the connection hole 8. A local low-pressure zone to occur on the vane leading edge is then removed to prevent a cavitation from occurring.
COPYRIGHT: (C)1980,JPO&Japio
JP13453078A 1978-11-02 1978-11-02 Centrifugal diagonal flow pump Pending JPS5564199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13453078A JPS5564199A (en) 1978-11-02 1978-11-02 Centrifugal diagonal flow pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13453078A JPS5564199A (en) 1978-11-02 1978-11-02 Centrifugal diagonal flow pump

Publications (1)

Publication Number Publication Date
JPS5564199A true JPS5564199A (en) 1980-05-14

Family

ID=15130464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13453078A Pending JPS5564199A (en) 1978-11-02 1978-11-02 Centrifugal diagonal flow pump

Country Status (1)

Country Link
JP (1) JPS5564199A (en)

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