EP2025945A3 - Flow working machine with ring canal wall fitting - Google Patents

Flow working machine with ring canal wall fitting Download PDF

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Publication number
EP2025945A3
EP2025945A3 EP08013782.1A EP08013782A EP2025945A3 EP 2025945 A3 EP2025945 A3 EP 2025945A3 EP 08013782 A EP08013782 A EP 08013782A EP 2025945 A3 EP2025945 A3 EP 2025945A3
Authority
EP
European Patent Office
Prior art keywords
point
recess
blade tip
points
wall
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
EP08013782.1A
Other languages
German (de)
French (fr)
Other versions
EP2025945B1 (en
EP2025945A2 (en
Inventor
Volker Gümmer
Marius Swoboda
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 EP2025945A2 publication Critical patent/EP2025945A2/en
Publication of EP2025945A3 publication Critical patent/EP2025945A3/en
Application granted granted Critical
Publication of EP2025945B1 publication Critical patent/EP2025945B1/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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

Landscapes

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

Abstract

Die Erfindung bezieht sich auf eine Strömungsarbeitsmaschine mit einem von einem Gehäuse (1) und einer rotierenden Welle (2) gebildeten Strömungspfad, in welchem Reihen von Rotorschaufeln (3) und Statorschaufeln (4) angeordnet sind, wobei in einem Spitzenbereich der Schaufeln (3, 4) in einer Ringkanalwandung des Gehäuses (1) und/oder der Welle (2) zumindest eine ringnutartige Ausnehmung (5) angeordnet ist, dadurch gekennzeichnet, dass der Querschnitt und die Lage der Ausnehmung (5) wie folgt definiert sind:
ein in Strömungsrichtung stromauf angeordneter Begrenzungspunkt (E) der Ausnehmung (5) weist einen Abstand e > 0 vor dem vorderen Schaufelspitzenpunkt (A) auf,
ein in Strömungsrichtung stromab angeordneter Begrenzungspunkt (F) der Ausnehmung (5) weist einen Abstand (f) zu dem vorderen Schaufelspitzenpunkt (A) auf,

wobei folgendes gilt: 0,5 L > f > 0,
wobei L als Abstand der Schaufelspitzenpunkte (A und B) definiert ist;
wobei die Wandung der Ausnehmung (5) einen Punkt (S) einschließt, welcher auf einer orthogonalen auf der Linie (AB) durch den Punkt (S) angeordnet ist,
wobei eine Gerade durch die Schaufelspitzenpunkte (A und B) und eine Tangente an die Wandung der Ausnehmung (5) mindestens in einem Punkt der in einem Meridianschnitt gegebenen Wandung der Ausnehmung (5) zwischen den Punkten (S) und (F) einen Winkel (beta) einschließen, der 15° ≤ beta ≤ 70° beträgt,
wobei alle Punkte in einer Meridianebene liegen, die durch eine Achsrichtung (x) der Achse (6) der Strömungsarbeitsmaschine und eine Radialrichtung (r) gebildet wird, und
wobei alle Abstände parallel zu einer einen vorderen Schaufelspitzenpunkt (A) und einen hinteren Schaufelspitzenpunkt (B) verbindenden Linie gemessen sind.

Figure imgaf001
The invention relates to a fluid flow machine with a flow path formed by a housing (1) and a rotating shaft (2), in which rows of rotor blades (3) and stator blades (4) are arranged, wherein in a tip region of the blades (3, 4) in an annular channel wall of the housing (1) and / or the shaft (2) at least one annular groove-like recess (5) is arranged, characterized in that the cross section and the position of the recess (5) are defined as follows:
a boundary point (E) of the recess (5) arranged upstream in the flow direction has a distance e> 0 in front of the front blade tip point (A),
a boundary point (F) of the recess (5) arranged downstream in the direction of flow has a distance (f) from the front blade tip point (A),

where: 0.5 L>f> 0,
where L is defined as the distance of the blade tip points (A and B);
the wall of the recess (5) enclosing a point (S) disposed on an orthogonal line (AB) through the point (S),
wherein a straight line through the blade tip points (A and B) and a tangent to the wall of the recess (5) at least at one point of the given in a meridian section wall of the recess (5) between the points (S) and (F) an angle ( beta) which is 15 ° ≤ beta ≤ 70 °,
wherein all points lie in a meridian plane formed by an axial direction (x) of the axis (6) of the fluid flow machine and a radial direction (r), and
wherein all distances are measured parallel to a line connecting a front blade tip point (A) and a rear blade tip point (B).
Figure imgaf001
EP08013782.1A 2007-08-10 2008-07-31 Flow working machine with ring canal wall fitting Ceased EP2025945B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007037924A DE102007037924A1 (en) 2007-08-10 2007-08-10 Turbomachine with Ringkanalwandausnehmung

Publications (3)

Publication Number Publication Date
EP2025945A2 EP2025945A2 (en) 2009-02-18
EP2025945A3 true EP2025945A3 (en) 2014-06-25
EP2025945B1 EP2025945B1 (en) 2016-04-20

Family

ID=39869927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08013782.1A Ceased EP2025945B1 (en) 2007-08-10 2008-07-31 Flow working machine with ring canal wall fitting

Country Status (3)

Country Link
US (1) US8419355B2 (en)
EP (1) EP2025945B1 (en)
DE (1) DE102007037924A1 (en)

Families Citing this family (30)

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DE102007056953B4 (en) * 2007-11-27 2015-10-22 Rolls-Royce Deutschland Ltd & Co Kg Turbomachine with Ringkanalwandausnehmung
FR2940374B1 (en) * 2008-12-23 2015-02-20 Snecma COMPRESSOR HOUSING WITH OPTIMIZED CAVITIES.
DE102011107523B4 (en) * 2011-07-15 2016-08-11 MTU Aero Engines AG System for injecting a fluid, compressor and turbomachine
FR2989744B1 (en) * 2012-04-19 2014-06-13 Snecma CAVITY COMPRESSOR HOUSING WITH OPTIMIZED SHAFT
FR2989742B1 (en) * 2012-04-19 2014-05-09 Snecma UPRIGHT CAVITY COMPRESSOR HOUSING OPTIMIZED
FR2989743B1 (en) * 2012-04-19 2015-08-14 Snecma COMPRESSOR HOUSING WITH CAVITIES OF VARIED LENGTHS
US20140093355A1 (en) * 2012-09-28 2014-04-03 United Technologies Corporation Extended indentation for a fastener within an air flow
CN104937213B (en) 2013-01-23 2018-02-23 概创机械设计有限责任公司 Turbine containing flow-guiding structure
WO2014158236A1 (en) * 2013-03-12 2014-10-02 United Technologies Corporation Cantilever stator with vortex initiation feature
US9644639B2 (en) * 2014-01-27 2017-05-09 Pratt & Whitney Canada Corp. Shroud treatment for a centrifugal compressor
JP6866019B2 (en) * 2014-06-24 2021-04-28 コンセプツ エヌアールイーシー，エルエルシー Flow control structure of turbomachinery and its design method
WO2016022138A1 (en) * 2014-08-08 2016-02-11 Siemens Aktiengesellschaft Compressor usable within a gas turbine engine
US20160153465A1 (en) * 2014-12-01 2016-06-02 General Electric Company Axial compressor endwall treatment for controlling leakage flow therein
US10047620B2 (en) * 2014-12-16 2018-08-14 General Electric Company Circumferentially varying axial compressor endwall treatment for controlling leakage flow therein
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JP2016118165A (en) * 2014-12-22 2016-06-30 株式会社Ihi Axial flow machine and jet engine
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FR3137940A1 (en) * 2022-07-15 2024-01-19 Safran Treatment of variable timing casing by co-axial multi-discs
US12085021B1 (en) 2023-08-16 2024-09-10 Rolls-Royce North American Technologies Inc. Adjustable air flow plenum with movable closure for a fan of a gas turbine engine
US12018621B1 (en) 2023-08-16 2024-06-25 Rolls-Royce North American Technologies Inc. Adjustable depth tip treatment with rotatable ring with pockets for a fan of a gas turbine engine
US11970985B1 (en) 2023-08-16 2024-04-30 Rolls-Royce North American Technologies Inc. Adjustable air flow plenum with pivoting vanes for a fan of a gas turbine engine
US11965528B1 (en) 2023-08-16 2024-04-23 Rolls-Royce North American Technologies Inc. Adjustable air flow plenum with circumferential movable closure for a fan of a gas turbine engine
US12066035B1 (en) 2023-08-16 2024-08-20 Rolls-Royce North American Technologies Inc. Adjustable depth tip treatment with axial member with pockets for a fan of a gas turbine engine
US12078070B1 (en) 2023-08-16 2024-09-03 Rolls-Royce North American Technologies Inc. Adjustable air flow plenum with sliding doors for a fan of a gas turbine engine

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Also Published As

Publication number Publication date
US20090041576A1 (en) 2009-02-12
DE102007037924A1 (en) 2009-02-12
EP2025945B1 (en) 2016-04-20
EP2025945A2 (en) 2009-02-18
US8419355B2 (en) 2013-04-16

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