EP1167696A3 - Labyrinth seal for a rotating shaft - Google Patents

Labyrinth seal for a rotating shaft Download PDF

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Publication number
EP1167696A3
EP1167696A3 EP01112342A EP01112342A EP1167696A3 EP 1167696 A3 EP1167696 A3 EP 1167696A3 EP 01112342 A EP01112342 A EP 01112342A EP 01112342 A EP01112342 A EP 01112342A EP 1167696 A3 EP1167696 A3 EP 1167696A3
Authority
EP
European Patent Office
Prior art keywords
grooves
rotor
labyrinth seal
stator
relief grooves
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
EP01112342A
Other languages
German (de)
French (fr)
Other versions
EP1167696B1 (en
EP1167696A2 (en
Inventor
Jörg Dr. Pross
Thomas Kramer
Ulrich Waltke
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.)
General Electric Technology GmbH
Original Assignee
Alstom Schweiz 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 Alstom Schweiz AG filed Critical Alstom Schweiz AG
Publication of EP1167696A2 publication Critical patent/EP1167696A2/en
Publication of EP1167696A3 publication Critical patent/EP1167696A3/en
Application granted granted Critical
Publication of EP1167696B1 publication Critical patent/EP1167696B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type

Abstract

Zwischen dem Rotor und Stator (1) einer axialen Strömungsmaschine befinden sich Dichtstreifen (2) einer Labyrinthdichtung, welche in Dichtstreifennuten (3) eingestemmt sind. Zwischen den Dichtstreifen (3) sind Entlastungsnuten (6) derart angeordnet, dass die axiale Steifigkeit des Rotors oder Stators (1) in wesentlichen stetig ist. Dies kann durch eine oder mehrere flache Entlastungsnuten (6), eine wellige Oberfläche oder durch teilweise oder ganze Füllung der Entlastungsnuten (6) mit einem geeigneten elastischen Material geschehen, so dass sich eine gleichmässigere axiale Spannungsverteilung zwischen den Dichtstreifennuten (3) und Entlastungsnuten (6) entlang des Rotor- bzw. Statorabschnitts ergibt.

Figure 00000001
Between the rotor and stator (1) of an axial flow machine there are sealing strips (2) of a labyrinth seal, which are caulked into sealing strip grooves (3). Relief grooves (6) are arranged between the sealing strips (3) in such a way that the axial rigidity of the rotor or stator (1) is essentially constant. This can be done by one or more flat relief grooves (6), a wavy surface or by partially or completely filling the relief grooves (6) with a suitable elastic material, so that there is a more uniform axial stress distribution between the sealing strip grooves (3) and relief grooves (6 ) along the rotor or stator section.
Figure 00000001
EP01112342A 2000-06-23 2001-05-21 Labyrinth seal for a rotating shaft Expired - Lifetime EP1167696B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10030820A DE10030820A1 (en) 2000-06-23 2000-06-23 Labyrinth seal for a rotating shaft
DE10030820 2000-06-23

Publications (3)

Publication Number Publication Date
EP1167696A2 EP1167696A2 (en) 2002-01-02
EP1167696A3 true EP1167696A3 (en) 2003-11-12
EP1167696B1 EP1167696B1 (en) 2004-12-15

Family

ID=7646669

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01112342A Expired - Lifetime EP1167696B1 (en) 2000-06-23 2001-05-21 Labyrinth seal for a rotating shaft

Country Status (3)

Country Link
US (1) US6575693B2 (en)
EP (1) EP1167696B1 (en)
DE (2) DE10030820A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10205092A1 (en) * 2002-02-07 2003-08-21 Cft Gmbh Jaw crusher with continuous drive shaft
GB0308147D0 (en) * 2003-04-09 2003-05-14 Rolls Royce Plc A seal
WO2004113771A2 (en) * 2003-06-20 2004-12-29 Elliott Company Hybrid abradable labyrinth damper seal
US20070069477A1 (en) * 2003-06-20 2007-03-29 Elliott Company Stepped labyrinth damper seal
US7806410B2 (en) 2007-02-20 2010-10-05 United Technologies Corporation Damping device for a stationary labyrinth seal
US8876484B2 (en) * 2011-08-05 2014-11-04 Hamilton Sundstrand Corporation Turbine blade pocket pin stress relief
US8967955B2 (en) * 2011-09-26 2015-03-03 Honeywell International Inc. Turbocharger with variable nozzle having labyrinth seal for vanes
ES2620486T3 (en) 2013-10-08 2017-06-28 MTU Aero Engines AG Component and turbomachinery support
DE202013012218U1 (en) 2013-10-24 2015-09-21 Man Diesel & Turbo Se sealing system
US9995161B2 (en) 2014-11-12 2018-06-12 Borgwarner Inc. Modular turbocharger clearance seal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE675124C (en) * 1937-06-02 1939-04-29 Aeg Stuffing box for steam or gas turbines with high operating temperatures
IT1063035B (en) * 1975-05-09 1985-02-11 Maschf Augsburg Nuernberg Ag APPARATUS FOR REALIZING THE PROCEDURE TO ELEVATE THE DYNAMIC POWER LIMIT OF STEAM OR GAS TURBINES OR COMPRESSORS
DE3523469A1 (en) 1985-07-01 1987-01-08 Bbc Brown Boveri & Cie Contact-free controlled-gap seal for turbo-machines
DE59609405D1 (en) 1996-04-01 2002-08-08 Alstom Wall contour for an axial turbomachine
EP0943784A1 (en) 1998-03-19 1999-09-22 Asea Brown Boveri AG Contoured channel for an axial turbomachine
EP0982475A1 (en) 1998-08-28 2000-03-01 Asea Brown Boveri AG Axial flow turbomachine with shrouded blading
US6168377B1 (en) * 1999-01-27 2001-01-02 General Electric Co. Method and apparatus for eliminating thermal bowing of steam turbine rotors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KARL SCHRÖDER: "Grosse Dampfkraftwerke, Bd 3 Die Kraftwerksausrüstung, Teil B Dampf- und Gasturbinen, Generatoren", 1968, SPRINGER VERLAG, BERLIN / HEIDELBERG / NEW YORK, XP009016858 *

Also Published As

Publication number Publication date
EP1167696B1 (en) 2004-12-15
US20020006330A1 (en) 2002-01-17
EP1167696A2 (en) 2002-01-02
DE10030820A1 (en) 2002-01-03
US6575693B2 (en) 2003-06-10
DE50104807D1 (en) 2005-01-20

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