EA200501572A1 - STEAM / GAS TURBINE PRESSURE STAGE WITH UNIVERSAL BANDAGE - Google Patents

STEAM / GAS TURBINE PRESSURE STAGE WITH UNIVERSAL BANDAGE

Info

Publication number
EA200501572A1
EA200501572A1 EA200501572A EA200501572A EA200501572A1 EA 200501572 A1 EA200501572 A1 EA 200501572A1 EA 200501572 A EA200501572 A EA 200501572A EA 200501572 A EA200501572 A EA 200501572A EA 200501572 A1 EA200501572 A1 EA 200501572A1
Authority
EA
Eurasian Patent Office
Prior art keywords
bandage
steam
holes
gas turbine
pressure stage
Prior art date
Application number
EA200501572A
Other languages
Russian (ru)
Other versions
EA008156B1 (en
Inventor
Олег Налётов
Владлен Зитин
Original Assignee
Олег Налётов
Владлен Зитин
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 Олег Налётов, Владлен Зитин filed Critical Олег Налётов
Publication of EA200501572A1 publication Critical patent/EA200501572A1/en
Publication of EA008156B1 publication Critical patent/EA008156B1/en

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
    • F01D5/142—Shape, i.e. outer, aerodynamic form of the blades of successive rotor or stator blade-rows
    • F01D5/143—Contour of the outer or inner working fluid flow path wall, i.e. shroud or hub contour
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/007—Preventing corrosion
    • 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
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/32—Application in turbines in gas turbines
    • 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
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • F05D2260/602—Drainage
    • 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
    • F05D2260/00—Function
    • F05D2260/95—Preventing corrosion
    • 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)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

Несовершенство конструкций бандажей (8) или подобных деталей лопаток (7) паровых/газовых турбин, включая смежные уплотнения, приводит к уменьшению надежности и КПД. Эти недостатки устранены с помощи радиальных отверстий (12), просверленных в бандаже лопаток (7). Проход пара сквозь отверстия (12) в бандаже приводит к падению градиента давления на поверхность бандажа (8) и предотвращает формирование оксида металлов, солей и других отложений на внутренних поверхностях бандажа (8). Количество и диаметр отверстий (12), так же как их расположение и величина радиальных зазоров в уплотнениях (4, 5) венца бандажа определяют их эффективность.The imperfection of the structures of the bandages (8) or similar parts of the blades (7) of steam / gas turbines, including adjacent seals, leads to a decrease in reliability and efficiency. These deficiencies are eliminated with the help of the radial holes (12) drilled in the band of blades (7). The passage of steam through the holes (12) in the bandage leads to a drop in the pressure gradient on the surface of the bandage (8) and prevents the formation of metal oxide, salts and other deposits on the internal surfaces of the bandage (8). The number and diameter of the holes (12), as well as their location and the size of the radial clearances in the seals (4, 5) of the bandage ring, determine their effectiveness.

EA200501572A 2003-04-18 2003-04-18 Stream/gas turbine pressure stage with universal shroud EA008156B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2003/012102 WO2004099572A1 (en) 2003-04-18 2003-04-18 Steam/gas turbine pressure stage with universal shroud

Publications (2)

Publication Number Publication Date
EA200501572A1 true EA200501572A1 (en) 2006-08-25
EA008156B1 EA008156B1 (en) 2007-04-27

Family

ID=33434336

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200501572A EA008156B1 (en) 2003-04-18 2003-04-18 Stream/gas turbine pressure stage with universal shroud

Country Status (10)

Country Link
EP (1) EP1623097A4 (en)
JP (1) JP4195882B2 (en)
CN (1) CN100386502C (en)
AU (1) AU2003228590B2 (en)
BR (1) BR0318261A (en)
CA (1) CA2562712C (en)
EA (1) EA008156B1 (en)
HK (1) HK1092853A1 (en)
UA (1) UA81314C2 (en)
WO (1) WO2004099572A1 (en)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE893649C (en) * 1940-05-04 1953-10-19 Siemens Ag Installation on steam or gas turbine blades
FR2166494A5 (en) * 1971-12-27 1973-08-17 Onera (Off Nat Aerospatiale)
SU663861A1 (en) * 1977-08-23 1979-05-25 Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина Axial turbine runner
JPS55146201A (en) * 1979-05-04 1980-11-14 Hitachi Ltd Moving blade for turbine
US4534701A (en) * 1982-06-29 1985-08-13 Gerhard Wisser Rotor or guide wheel of a turbine engine with shroud ring
DE3505491A1 (en) * 1985-02-16 1986-08-21 MTU Motoren- und Turbinen-Union München GmbH, 8000 München GASKET FOR A FLUID MACHINE
DE4015206C1 (en) * 1990-05-11 1991-10-17 Mtu Muenchen Gmbh
FR2661944B1 (en) * 1990-05-14 1994-06-10 Alsthom Gec TURBOMACHINE FLOOR WITH REDUCED SECONDARY LOSSES.
FR2666846B1 (en) * 1990-09-13 1992-10-16 Alsthom Gec VANE GRILLE FOR TURBOMACHINE PROVIDED WITH SUCTION SLOTS IN THE CEILING AND / OR IN THE FLOOR AND TURBOMACHINE COMPRISING SUCH GRIDS.
US5224713A (en) * 1991-08-28 1993-07-06 General Electric Company Labyrinth seal with recirculating means for reducing or eliminating parasitic leakage through the seal
GB9607578D0 (en) * 1996-04-12 1996-06-12 Rolls Royce Plc Turbine rotor blades
EP0844369B1 (en) * 1996-11-23 2002-01-30 ROLLS-ROYCE plc A bladed rotor and surround assembly
EP1013884B1 (en) * 1998-12-24 2005-07-27 ALSTOM Technology Ltd Turbine blade with actively cooled head platform

Also Published As

Publication number Publication date
EP1623097A1 (en) 2006-02-08
BR0318261A (en) 2006-05-23
CA2562712C (en) 2011-05-31
EP1623097A4 (en) 2012-06-27
HK1092853A1 (en) 2007-02-16
CN100386502C (en) 2008-05-07
CN1788142A (en) 2006-06-14
AU2003228590A1 (en) 2004-11-26
WO2004099572A1 (en) 2004-11-18
JP2006523792A (en) 2006-10-19
CA2562712A1 (en) 2004-11-18
UA81314C2 (en) 2007-12-25
AU2003228590B2 (en) 2010-01-07
JP4195882B2 (en) 2008-12-17
EA008156B1 (en) 2007-04-27

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Legal Events

Date Code Title Description
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ KG MD TJ TM

MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): BY KZ RU