KR100272200B1 - Centrifugal pump with an improved axial diffusro - Google Patents

Centrifugal pump with an improved axial diffusro Download PDF

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Publication number
KR100272200B1
KR100272200B1 KR1019930008059A KR930008059A KR100272200B1 KR 100272200 B1 KR100272200 B1 KR 100272200B1 KR 1019930008059 A KR1019930008059 A KR 1019930008059A KR 930008059 A KR930008059 A KR 930008059A KR 100272200 B1 KR100272200 B1 KR 100272200B1
Authority
KR
South Korea
Prior art keywords
incident angle
treating liquid
blade
centrifugal pump
blades
Prior art date
Application number
KR1019930008059A
Other languages
Korean (ko)
Other versions
KR940005894A (en
Inventor
Motoyasu Ogawa
Original Assignee
Nikkiso Co 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 Nikkiso Co Ltd filed Critical Nikkiso Co Ltd
Publication of KR940005894A publication Critical patent/KR940005894A/en
Application granted granted Critical
Publication of KR100272200B1 publication Critical patent/KR100272200B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

PURPOSE: An axial diffuser and an operation method of a centrifugal pump therewith are provided to prevent rotating stall at the inlet of the diffuser securely and conveniently, and to enlarge the operational range of the pump by adjusting the difference between the incident angle of the blade and the incident angle of treating liquid. CONSTITUTION: A centrifugal pump has an axial diffuser(12) with plural blades(16) having the specific incident angle to prevent stall of rotation and to enlarge the operational flow area. The incident angle of the blades of the axial diffuser is so determined that a value provided by subtraction from the blade incident angle(beta G) by the incident angle(alpha G) of treating liquid is equal to or below the specific angle defined according to the kind of the treating liquid. The axial diffuser is formed by fixing the blades in a casing(20) to regulate the treating liquid discharged from an impeller(10) supported to a rotating shaft(22). The incident angle of the blade is 3 to 10 angular degrees, and the value subtracting the incident angle of the treating liquid from the incident angle of the blade -1 to 8 angular degrees.
KR1019930008059A 1992-05-28 1993-05-11 Centrifugal pump with an improved axial diffusro KR100272200B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP93-64378 1992-03-23
JP92-136795 1992-05-28
JP13679592 1992-05-28
JP5064378A JPH06101695A (en) 1992-05-28 1993-03-23 Axial diffuser and method for running centrifugal pump provided with axial diffuser

Publications (2)

Publication Number Publication Date
KR940005894A KR940005894A (en) 1994-03-22
KR100272200B1 true KR100272200B1 (en) 2000-11-15

Family

ID=26405492

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930008059A KR100272200B1 (en) 1992-05-28 1993-05-11 Centrifugal pump with an improved axial diffusro

Country Status (2)

Country Link
JP (1) JPH06101695A (en)
KR (1) KR100272200B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0916901D0 (en) * 2009-09-25 2009-11-11 Dynamic Boosting Systems Ltd Diffuser
CN106321465A (en) * 2016-08-22 2017-01-11 江苏大学 Kinetics characterization method for rotating stall of centrifugal pump impeller

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5756699A (en) * 1980-09-22 1982-04-05 Hitachi Ltd Diffused with vane

Also Published As

Publication number Publication date
JPH06101695A (en) 1994-04-12
KR940005894A (en) 1994-03-22

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E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
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Payment date: 20050725

Year of fee payment: 6

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