JPS57159998A - Diffuser of high-speed centrifugal compressor - Google Patents

Diffuser of high-speed centrifugal compressor

Info

Publication number
JPS57159998A
JPS57159998A JP4390681A JP4390681A JPS57159998A JP S57159998 A JPS57159998 A JP S57159998A JP 4390681 A JP4390681 A JP 4390681A JP 4390681 A JP4390681 A JP 4390681A JP S57159998 A JPS57159998 A JP S57159998A
Authority
JP
Japan
Prior art keywords
vane
stationary
generated
stream
centrifugal compressor
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
JP4390681A
Other languages
Japanese (ja)
Inventor
Koji Nakagawa
Yoichi Yoshinaga
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 JP4390681A priority Critical patent/JPS57159998A/en
Publication of JPS57159998A publication Critical patent/JPS57159998A/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
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0246—Surge control by varying geometry within the pumps, e.g. by adjusting vanes
    • 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
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE:To make it possible to efficiently convert energy by rotatably supporting an auxiliary vane having a length shorter than that of stationary guide vanes in the vicinity of the periphery of a vane lattice between each adjacent two of the stationary vanes so that surging phenomenon may be avoided. CONSTITUTION:The stream which is closer to a stationary vane 5b than to an auxiliary vane 18 generates therein expansion waves 16 and strong shock waves 23 so that a separated stream area 24 is generated. However, the strong shock waves 23 are not generated all over the region between the stationary vanes 5a, 5b but in the limited narrow area along a throat portion 11c which is provided by the provision of the auxiliary vane 18. Thus, the generated stream separation area 24 is limited to a narrow region without the generation of surging phenomenon remarkably deteriorating the performance of the centrifugal compressor, thereby the conversion of energy is effectively carried out.
JP4390681A 1981-03-27 1981-03-27 Diffuser of high-speed centrifugal compressor Pending JPS57159998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4390681A JPS57159998A (en) 1981-03-27 1981-03-27 Diffuser of high-speed centrifugal compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4390681A JPS57159998A (en) 1981-03-27 1981-03-27 Diffuser of high-speed centrifugal compressor

Publications (1)

Publication Number Publication Date
JPS57159998A true JPS57159998A (en) 1982-10-02

Family

ID=12676750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4390681A Pending JPS57159998A (en) 1981-03-27 1981-03-27 Diffuser of high-speed centrifugal compressor

Country Status (1)

Country Link
JP (1) JPS57159998A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64399A (en) * 1987-02-26 1989-01-05 Hitachi Ltd Diffuser of high speed centrifugal compressor
US4877370A (en) * 1987-09-01 1989-10-31 Hitachi, Ltd. Diffuser for centrifugal compressor
US4969798A (en) * 1988-02-26 1990-11-13 Hitachi, Ltd. Diffuser for a centrifugal compressor
DE4126907A1 (en) * 1990-09-05 1992-03-12 Hitachi Ltd RADIAL COMPRESSORS
CN105332945A (en) * 2015-12-08 2016-02-17 浙江理工大学 Centrifugal fan impeller capable of adjusting splitting vanes
CN105465038A (en) * 2015-12-30 2016-04-06 浙江理工大学 V-shaped incision blade type flow-stabilizing centrifugal pump and design method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64399A (en) * 1987-02-26 1989-01-05 Hitachi Ltd Diffuser of high speed centrifugal compressor
JPH0615878B2 (en) * 1987-02-26 1994-03-02 株式会社日立製作所 High-speed centrifugal compressor diffuser
US4877370A (en) * 1987-09-01 1989-10-31 Hitachi, Ltd. Diffuser for centrifugal compressor
US4969798A (en) * 1988-02-26 1990-11-13 Hitachi, Ltd. Diffuser for a centrifugal compressor
DE4126907A1 (en) * 1990-09-05 1992-03-12 Hitachi Ltd RADIAL COMPRESSORS
CN105332945A (en) * 2015-12-08 2016-02-17 浙江理工大学 Centrifugal fan impeller capable of adjusting splitting vanes
CN105332945B (en) * 2015-12-08 2017-07-28 浙江理工大学 A kind of Centrifugal Fan Impeller of adjustable splitterr vanes
CN105465038A (en) * 2015-12-30 2016-04-06 浙江理工大学 V-shaped incision blade type flow-stabilizing centrifugal pump and design method thereof

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