EP2143956A3 - Flow work machine with groove on a running gap of a blade end - Google Patents

Flow work machine with groove on a running gap of a blade end Download PDF

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Publication number
EP2143956A3
EP2143956A3 EP09007629.0A EP09007629A EP2143956A3 EP 2143956 A3 EP2143956 A3 EP 2143956A3 EP 09007629 A EP09007629 A EP 09007629A EP 2143956 A3 EP2143956 A3 EP 2143956A3
Authority
EP
European Patent Office
Prior art keywords
groove
blade end
gap
work machine
flow work
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Withdrawn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
EP09007629.0A
Other languages
German (de)
French (fr)
Other versions
EP2143956A2 (en
Inventor
Volker Dr. Gümmer
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.)
Rolls Royce Deutschland Ltd and Co KG
Original Assignee
Rolls Royce Deutschland Ltd and Co KG
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 Rolls Royce Deutschland Ltd and Co KG filed Critical Rolls Royce Deutschland Ltd and Co KG
Publication of EP2143956A2 publication Critical patent/EP2143956A2/en
Publication of EP2143956A3 publication Critical patent/EP2143956A3/en
Withdrawn legal-status Critical Current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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/685—Inducing localised fluid recirculation in the stator-rotor interface
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors

Landscapes

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

Abstract

Die Erfindung betrifft eine Strömungsarbeitsmaschine mit einem von einer Nabe (3) und einem Gehäuse (1) berandeten Hauptströmungspfad (2), in welchem mindestens eine Reihe von Schaufeln (5) angeordnet ist, wobei an mindestens einer Schaufelreihe (5) zwischen einem Schaufelende und einer Hauptströmungspfadberandung ein Spalt (11) vorgesehen ist, wobei das Schaufelende und die Hauptströmungspfadberandung eine rotierende Relativbewegung zueinander ausführen und im Bereich des Spaltes (11) in der Hauptströmungspfadberandung mindestens eine Nut (7) entlang mindestens eines Teils des Umfangs vorgesehen ist, wobei die Querschnittsfläche der Nut (7) in der Meridianansicht der Strömungsarbeitsmaschine betrachtet wesentlich von einer Parallelogrammform abweicht und aufgrund seiner Konturgebung stromaufwärts geneigt ist, dadurch gekennzeichnet, dass der Schwerpunkt des Nutquerschnittsfläche stromauf des Mittelpunktes der Nutöffnung (12) am Hauptströmungspfad vorgesehen ist.

Figure imgaf001
The invention relates to a turbomachine having a main flow path (2) bordered by a hub (3) and a housing (1), in which at least one row of blades (5) is arranged, wherein at least one blade row (5) is arranged between a blade end and a main flow path boundary a gap (11) is provided, wherein the blade end and the Hauptströmungspfadberandung perform a rotating relative movement to each other and in the region of the gap (11) in the Hauptströmungspfadberandung at least one groove (7) along at least part of the circumference is provided, wherein the cross-sectional area the groove (7) viewed in the meridian view of the fluid flow machine is substantially deviated from a parallelogram shape and inclined upstream due to its contouring, characterized in that the center of gravity of the groove cross-sectional area is provided upstream of the center of the groove opening (12) on the main flowpath.
Figure imgaf001
EP09007629.0A 2008-07-07 2009-06-09 Flow work machine with groove on a running gap of a blade end Withdrawn EP2143956A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008031982A DE102008031982A1 (en) 2008-07-07 2008-07-07 Turbomachine with groove at a trough of a blade end

Publications (2)

Publication Number Publication Date
EP2143956A2 EP2143956A2 (en) 2010-01-13
EP2143956A3 true EP2143956A3 (en) 2015-03-18

Family

ID=41037780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09007629.0A Withdrawn EP2143956A3 (en) 2008-07-07 2009-06-09 Flow work machine with groove on a running gap of a blade end

Country Status (3)

Country Link
US (1) US8257022B2 (en)
EP (1) EP2143956A3 (en)
DE (1) DE102008031982A1 (en)

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Also Published As

Publication number Publication date
EP2143956A2 (en) 2010-01-13
DE102008031982A1 (en) 2010-01-14
US20100014956A1 (en) 2010-01-21
US8257022B2 (en) 2012-09-04

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