EP0280850A2 - Machine centrifuge du type radial avec diffuseur en forme de disque - Google Patents

Machine centrifuge du type radial avec diffuseur en forme de disque Download PDF

Info

Publication number
EP0280850A2
EP0280850A2 EP88100577A EP88100577A EP0280850A2 EP 0280850 A2 EP0280850 A2 EP 0280850A2 EP 88100577 A EP88100577 A EP 88100577A EP 88100577 A EP88100577 A EP 88100577A EP 0280850 A2 EP0280850 A2 EP 0280850A2
Authority
EP
European Patent Office
Prior art keywords
diffuser
disc
turbo
working machine
radial
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.)
Granted
Application number
EP88100577A
Other languages
German (de)
English (en)
Other versions
EP0280850B1 (fr
EP0280850A3 (en
Inventor
Hartmut Griepentrog
Helmut Beer
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.)
Deutsche Babcock Borsig AG
Original Assignee
Borsig GmbH
Deutsche Babcock Borsig AG
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 Borsig GmbH, Deutsche Babcock Borsig AG filed Critical Borsig GmbH
Priority to AT88100577T priority Critical patent/ATE59439T1/de
Publication of EP0280850A2 publication Critical patent/EP0280850A2/fr
Publication of EP0280850A3 publication Critical patent/EP0280850A3/de
Application granted granted Critical
Publication of EP0280850B1 publication Critical patent/EP0280850B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • 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
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to a turbo working machine of radial type according to the preamble of claim 1.
  • the diffusers are used in radial radial turbomachinery to reduce the flow velocity of the medium and to convert it into static pressure.
  • the known disc diffusers can be parallel-walled, or conically narrow or widen outwards.
  • the disc diffusers can be provided with or without guide vanes, these guide vanes being fixed or adjustable.
  • the known disk diffusers can be profiled axially in order to change special properties of the turbomachine, for example in order to act on the surge limit.
  • the disk diffusers can also be axially adjustable to influence the control behavior of the turbomachine.
  • rotationally asymmetrical pressure distributions can be caused by interfering bodies, local openings, discontinuous cross sections and over- or underloaded spirals.
  • the known disc diffusers pass on the influences of this rotationally asymmetrical flow retroactively to the impeller.
  • the resulting pressure differences on the circumference have a lasting influence on the operating behavior of the turbomachine, reduce the efficiency and have a vibration-stimulating effect on the blades of the impeller.
  • the invention has for its object to design the generic radial turbo machine so that the adverse effects of peripheral pressure differences are mitigated.
  • the disc diffuser designed according to the invention can be set to a lower local pressure on the periphery of the disc diffuser in such a way that the pressure at this point is increased by the locally different radial length of the diffuser channel.
  • the disc diffuser can also track the rotation of the peripheral pressure profile when the operating load changes. As a result, the peripheral pressure distribution behind the impeller is made more uniform and the impeller is applied more evenly. This leveling of the pressure distribution and the impingement of the impeller improve the efficiency and the pumping behavior of the turbo machine.
  • the vibration excitation of the impeller blades is reduced by the now smaller rotational asymmetries of the pressure.
  • the previously very complex spirals can be replaced by simple rotationally symmetrical collecting spaces, since the aerodynamic disadvantages of such collecting spaces are compensated for.
  • An impeller 2 rotates in a housing 1 of a turbo machine, which is only partially shown.
  • the diffuser channel 3 of a disk diffuser is located radially above the impeller 2, in which the flow velocity of the medium is reduced and converted into static pressure.
  • the diffuser channel 3 is formed by the rear wall 4 of the housing 1 and an annular diffuser disc 5.
  • the diffuser channel 3 opens into a collecting space 6, which is formed within the housing 1.
  • a connecting piece (not shown) for removing the medium connects to the collecting space 6.
  • the collecting space 6 is preferably rotationally symmetrical and can have an annular cross section exhibit. The collecting space 6 can also expand continuously towards the outlet nozzle.
  • the diffuser disc 5 is held in the housing 1 so as to be rotatable about the axis of rotation of the impeller 2 and is connected to a lever arrangement 9.
  • the diffuser disc 5 can be rotated by a certain angle relative to the housing 1 via this lever arrangement 9.
  • the radial length of the diffuser channel 3 differs locally.
  • the radially outer edge of the diffuser disc 5 is formed by a spiral curve. At one point the curve is drawn inwards, so that a closed line 7 with a bulge 8 is created.
  • the radially outer boundary of the diffuser channel 3 formed by the rear wall 3 and the diffuser disk 5 follows the outer contour of the diffuser disk 5, so that the diffuser channel 3 is also of different lengths in the radial direction as viewed over the cross section.
  • the diffuser disc 5 is rotated such that the local position of the pressure sink matches the bulge 8 of the diffuser disc 5.
  • the pressure sinks mentioned can migrate in the circumferential direction with the load state of the turbo working machine.
  • the pressure profile on the circumference of the disc diffuser can be determined for each load point.
  • a certain angular position of the disk diffuser 5 is assigned to each load point.
  • the disk diffuser can then be adjusted according to the load, so that the static pressure is always distributed as evenly as possible around the circumference of the disk diffuser.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Nozzles (AREA)
  • Motor Or Generator Frames (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
EP88100577A 1987-03-05 1988-01-16 Machine centrifuge du type radial avec diffuseur en forme de disque Expired - Lifetime EP0280850B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100577T ATE59439T1 (de) 1987-03-05 1988-01-16 Turbo-arbeitsmaschine radialer bauart mit scheibendiffusor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3707103A DE3707103C1 (de) 1987-03-05 1987-03-05 Turbo-Arbeitsmaschine radialer Bauart mit Scheibendiffusor
DE3707103 1987-03-05

Publications (3)

Publication Number Publication Date
EP0280850A2 true EP0280850A2 (fr) 1988-09-07
EP0280850A3 EP0280850A3 (en) 1989-08-02
EP0280850B1 EP0280850B1 (fr) 1990-12-27

Family

ID=6322356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100577A Expired - Lifetime EP0280850B1 (fr) 1987-03-05 1988-01-16 Machine centrifuge du type radial avec diffuseur en forme de disque

Country Status (7)

Country Link
US (1) US4824323A (fr)
EP (1) EP0280850B1 (fr)
JP (1) JPS63253197A (fr)
AT (1) ATE59439T1 (fr)
DE (2) DE3707103C1 (fr)
ES (1) ES2019408B3 (fr)
GR (1) GR3001250T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9353765B2 (en) * 2008-02-20 2016-05-31 Trane International Inc. Centrifugal compressor assembly and method
JP6128230B2 (ja) 2013-10-31 2017-05-17 株式会社Ihi 遠心圧縮機及び過給機

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE30288C (de) * J. bubbe, Ober-Telegraphen-Assistent in Hamburg Telephon-Uebertragungs-System
DE464970C (de) * 1927-02-21 1928-09-01 Oscar Simmen Kreiselmaschine mit durch axial verstellbare Regelmittel veraenderbarem Durchgangsquerschnitt im Diffusor oder Leitrad
US2285976A (en) * 1940-01-15 1942-06-09 Gen Electric Centrifugal compressor
GB768799A (en) * 1954-07-21 1957-02-20 Cleaver Brookes Company Improvements in or relating to fan structure
NL98031C (fr) * 1957-12-23
US3073512A (en) * 1958-06-16 1963-01-15 Thompson Ramo Wooldridge Inc Turbocharger fence ring
GB1011716A (en) * 1964-03-13 1965-12-01 Caterpillar Tractor Co Turbine-driven charger for an internal combustion engine
CH451711A (de) * 1964-07-14 1968-05-15 Emile Egger & Cie S A Mehrzweck-Pumpenaggregat
US3868196A (en) * 1974-03-29 1975-02-25 Gen Electric Centrifugal compressor with rotating vaneless diffuser powered by leakage flow
US3941501A (en) * 1974-11-18 1976-03-02 Avco Corporation Diffuser including a rotary stage
US4181466A (en) * 1977-03-17 1980-01-01 Wallace Murray Corp. Centrifugal compressor and cover
JPS54104007A (en) * 1978-02-01 1979-08-15 Hitachi Ltd Diffuser for centrifugal compressor

Also Published As

Publication number Publication date
DE3707103C1 (de) 1988-01-28
GR3001250T3 (en) 1992-07-30
DE3861390D1 (de) 1991-02-07
ES2019408B3 (es) 1991-06-16
ATE59439T1 (de) 1991-01-15
JPS63253197A (ja) 1988-10-20
EP0280850B1 (fr) 1990-12-27
EP0280850A3 (en) 1989-08-02
US4824323A (en) 1989-04-25

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