JPS562499A - Guide vane for multistage oblique flow pump - Google Patents

Guide vane for multistage oblique flow pump

Info

Publication number
JPS562499A
JPS562499A JP7820179A JP7820179A JPS562499A JP S562499 A JPS562499 A JP S562499A JP 7820179 A JP7820179 A JP 7820179A JP 7820179 A JP7820179 A JP 7820179A JP S562499 A JPS562499 A JP S562499A
Authority
JP
Japan
Prior art keywords
guide vanes
runner
vanes
vane
guide vane
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
JP7820179A
Other languages
Japanese (ja)
Inventor
Teiji Tanaka
Yutaka Nagasawa
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 JP7820179A priority Critical patent/JPS562499A/en
Publication of JPS562499A publication Critical patent/JPS562499A/en
Pending legal-status Critical Current

Links

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
    • F04D1/06—Multi-stage 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/70—Shape

Abstract

PURPOSE: To promote the efficiency of guide vanes by providing the guide vanes with twists to the rotation wise direction of a runner on the boss side of vane-exit ends and to the reverse direction on the tip side for restraining swirls inside the flow passage of guide vanes.
CONSTITUTION: Guide vanes 4W6 are provided with a curvature -θ1 on the tip side (outer wall side) of vane-exit ends reversely to the rotation wise N of a runner. They are also provided with a curvature +θ2 on the boss side (inner wall side) to the rotation wise direction N of the runner. That is, guide vanes 4W6 are twisted on vane-exit ends. In this construction, vanes are bent from the radius of the runner to deform the cross section of a flow passage between vanes in the direction of the pressure gradient of the passage, and consequently, the generation of secondary currents is reduced in itself for promoting the efficiency of guide vanes.
COPYRIGHT: (C)1981,JPO&Japio
JP7820179A 1979-06-22 1979-06-22 Guide vane for multistage oblique flow pump Pending JPS562499A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7820179A JPS562499A (en) 1979-06-22 1979-06-22 Guide vane for multistage oblique flow pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7820179A JPS562499A (en) 1979-06-22 1979-06-22 Guide vane for multistage oblique flow pump

Publications (1)

Publication Number Publication Date
JPS562499A true JPS562499A (en) 1981-01-12

Family

ID=13655393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7820179A Pending JPS562499A (en) 1979-06-22 1979-06-22 Guide vane for multistage oblique flow pump

Country Status (1)

Country Link
JP (1) JPS562499A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6415498A (en) * 1987-07-07 1989-01-19 Hitachi Ltd Multi-stage centrifugal pump
JP2011058384A (en) * 2009-09-08 2011-03-24 Ebara Corp Pump with diffuser
EP3361101A1 (en) * 2017-02-10 2018-08-15 Siemens Aktiengesellschaft Return channel of a multistage compressor or expander with twisted vanes
US20180347584A1 (en) * 2017-06-06 2018-12-06 Elliott Company Extended Sculpted Twisted Return Channel Vane Arrangement
DE102020118650A1 (en) 2020-07-15 2022-01-20 Ventilatorenfabrik Oelde, Gesellschaft mit beschränkter Haftung centrifugal fan

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6415498A (en) * 1987-07-07 1989-01-19 Hitachi Ltd Multi-stage centrifugal pump
JPH0511238B2 (en) * 1987-07-07 1993-02-12 Hitachi Ltd
JP2011058384A (en) * 2009-09-08 2011-03-24 Ebara Corp Pump with diffuser
EP3361101A1 (en) * 2017-02-10 2018-08-15 Siemens Aktiengesellschaft Return channel of a multistage compressor or expander with twisted vanes
WO2018145838A1 (en) * 2017-02-10 2018-08-16 Siemens Aktiengesellschaft Return stage of a multi-staged compressor or expander with twisted guide vanes
US11073162B2 (en) 2017-02-10 2021-07-27 Siemens Energy Global GmbH & Co. KG Return stage of a multi-staged compressor or expander with twisted guide vanes
US20180347584A1 (en) * 2017-06-06 2018-12-06 Elliott Company Extended Sculpted Twisted Return Channel Vane Arrangement
US10760587B2 (en) * 2017-06-06 2020-09-01 Elliott Company Extended sculpted twisted return channel vane arrangement
DE102020118650A1 (en) 2020-07-15 2022-01-20 Ventilatorenfabrik Oelde, Gesellschaft mit beschränkter Haftung centrifugal fan

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