FR2439869A1 - Fluid rotary energy converter - has standing annular vortex formed around blade tips, set up by discontinuity in casing profile - Google Patents

Fluid rotary energy converter - has standing annular vortex formed around blade tips, set up by discontinuity in casing profile

Info

Publication number
FR2439869A1
FR2439869A1 FR7926357A FR7926357A FR2439869A1 FR 2439869 A1 FR2439869 A1 FR 2439869A1 FR 7926357 A FR7926357 A FR 7926357A FR 7926357 A FR7926357 A FR 7926357A FR 2439869 A1 FR2439869 A1 FR 2439869A1
Authority
FR
France
Prior art keywords
discontinuity
energy converter
rotary energy
fluid rotary
blade tips
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.)
Withdrawn
Application number
FR7926357A
Other languages
French (fr)
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.)
GERRY ULRICH
Original Assignee
GERRY ULRICH
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 GERRY ULRICH filed Critical GERRY ULRICH
Publication of FR2439869A1 publication Critical patent/FR2439869A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • F01D5/145—Means for influencing boundary layers or secondary circulations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The fluid rotary energy converter or turbine or compressor system is basically a conventional bladed rotor inside a casing. The blade tip leakage problem is hear dealt with by embodying a point of discontinuity in the casing profile, opposite the blade tips, so that blade rotation causes an annular standing vortex to be set up between the two. The point of discontinuity takes the form of a curved excursion from the main inner boundary line adjoining the blade trailing edge, so dimensioned that the vortex axial width is less than that of the path swept by the blades.
FR7926357A 1978-10-24 1979-10-24 Fluid rotary energy converter - has standing annular vortex formed around blade tips, set up by discontinuity in casing profile Withdrawn FR2439869A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7841738 1978-10-24

Publications (1)

Publication Number Publication Date
FR2439869A1 true FR2439869A1 (en) 1980-05-23

Family

ID=10500548

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926357A Withdrawn FR2439869A1 (en) 1978-10-24 1979-10-24 Fluid rotary energy converter - has standing annular vortex formed around blade tips, set up by discontinuity in casing profile

Country Status (4)

Country Link
JP (1) JPS5560699A (en)
DE (1) DE2942703A1 (en)
FR (1) FR2439869A1 (en)
IT (1) IT1125995B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569766A1 (en) * 1984-08-17 1986-03-07 Proizv Ob Tur Steam turbine low-pressure cylinder
EP2096262A1 (en) * 2008-02-26 2009-09-02 Siemens Aktiengesellschaft Axial flow turbine with low shroud leakage losses
EP2570341A1 (en) * 2011-09-14 2013-03-20 Becker Marine Systems GmbH & Co. KG Propeller nozzle
CN111734683A (en) * 2020-07-03 2020-10-02 宁波工程学院 Method for inhibiting tip leakage vortex and centrifugal compressor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558900B1 (en) * 1984-02-01 1988-05-27 Snecma DEVICE FOR PERIPHERAL SEALING OF AXIAL COMPRESSOR BLADES
US4645417A (en) * 1984-02-06 1987-02-24 General Electric Company Compressor casing recess
JPH0471715U (en) * 1990-10-30 1992-06-25
DE59808700D1 (en) * 1998-07-14 2003-07-17 Alstom Switzerland Ltd Non-contact sealing of gaps in gas turbines
EP2530330B1 (en) 2011-06-01 2016-05-25 MTU Aero Engines AG Rotor blade for the compressor of a turbo engine, compressor and turbo machine
JP6224952B2 (en) * 2013-08-19 2017-11-01 株式会社Ｓｏｋｅｎ Blower

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569766A1 (en) * 1984-08-17 1986-03-07 Proizv Ob Tur Steam turbine low-pressure cylinder
EP2096262A1 (en) * 2008-02-26 2009-09-02 Siemens Aktiengesellschaft Axial flow turbine with low shroud leakage losses
EP2570341A1 (en) * 2011-09-14 2013-03-20 Becker Marine Systems GmbH & Co. KG Propeller nozzle
US9322290B2 (en) 2011-09-14 2016-04-26 Becker Marine Systems Gmbh & Co. Kg Propeller nozzle
CN111734683A (en) * 2020-07-03 2020-10-02 宁波工程学院 Method for inhibiting tip leakage vortex and centrifugal compressor

Also Published As

Publication number Publication date
DE2942703A1 (en) 1980-05-08
IT1125995B (en) 1986-05-14
IT7946880A0 (en) 1979-10-24
JPS5560699A (en) 1980-05-07

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Legal Events

Date Code Title Description
ST Notification of lapse