EP1473438A2 - Dampfturbine mit einem einstufigen Hochdruckmodul - Google Patents

Dampfturbine mit einem einstufigen Hochdruckmodul Download PDF

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Publication number
EP1473438A2
EP1473438A2 EP04290986A EP04290986A EP1473438A2 EP 1473438 A2 EP1473438 A2 EP 1473438A2 EP 04290986 A EP04290986 A EP 04290986A EP 04290986 A EP04290986 A EP 04290986A EP 1473438 A2 EP1473438 A2 EP 1473438A2
Authority
EP
European Patent Office
Prior art keywords
high pressure
pressure module
steam turbine
module
shaft
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Withdrawn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
EP04290986A
Other languages
English (en)
French (fr)
Other versions
EP1473438A3 (de
Inventor
Alain Hassan
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 Technology 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 Technology AG filed Critical Alstom Technology AG
Publication of EP1473438A2 publication Critical patent/EP1473438A2/de
Publication of EP1473438A3 publication Critical patent/EP1473438A3/de
Withdrawn legal-status Critical Current

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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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
    • F01D1/04—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines traversed by the working-fluid substantially axially
    • 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
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • 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
    • F05D2250/00—Geometry
    • F05D2250/30—Arrangement of components
    • F05D2250/32—Arrangement of components according to their shape
    • F05D2250/323—Arrangement of components according to their shape convergent
    • 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
    • F05D2250/00—Geometry
    • F05D2250/30—Arrangement of components
    • F05D2250/32—Arrangement of components according to their shape
    • F05D2250/324—Arrangement of components according to their shape divergent

Definitions

  • the present invention relates to steam turbines and more particularly turbines comprising a high body or module pressure and a low pressure body or module.
  • the high pressure module has a rotor of five to ten stages approximately with as many rows of fixed fins and movable fins.
  • This type of high pressure module is complex to produce and go up, so its price is important.
  • the object of the invention is to provide a high pressure module with both simple to make and to assemble while having a low cost.
  • the steam turbine according to the invention comprises a high module pressure with a single stage of fins, a low module pressure, a speed reducer and an alternator, it is characterized in that the high pressure module has a nozzle piece.
  • This single-stage high pressure module provides the same function as the multi-stage high pressure module with a fin design different from that of multi-stage turbines and its realization is easier and less expensive.
  • the pressure ratio between the input and the output can be for example from 3 to 20.
  • each module includes a rotor and that the rotor of the high pressure module and that of the low module pressure are driven by the speed reducer.
  • the fixed fins or the nozzles of the high pressure module have a profile with channels convergent then divergent form from the inlet to the outlet.
  • This profile fixed fins also called distributors, is calculated so known from the theory of supersonic flows.
  • the movable fins have a profile such that it limits the detachments and the losses along the canals, this profile is determined by calculations complex in three dimensions and using the equations of aerodynamics.
  • the high pressure module has a nozzle of divergent convergent shape. This form is characteristic of super sonic flows since the equations of aerodynamics applied to supersonic flows show the need to have channels whose section evolves in converging then diverging.
  • the high pressure module comprises a movable wheel secured to a shaft and supporting the blades, the whole being in one piece. That is to say that the fins are machined in the same room as the tree. The realization of a single piece of this together simplifies both its realization and its assembly.
  • the tree is coupled with a speed reducer.
  • the speed reducer has three axes, two high speed axes for each of the high and low pressure modules and a low speed axis for the alternator.
  • the upper module tree pressure is connected to one of the axes of the reducer.
  • the tree is directly connected to the reducer.
  • the coupling between the shaft and the reduction gear is ensured by an intermediate component, here the shaft is directly coupled to the reducer.
  • the high pressure module has a single steam control valve, resulting in simplification of the device.
  • the high pressure module has an independent landing. This independent bearing placed in the turbine module near the gearbox.
  • Turbine 1 of the prior art as seen in the figure 1 includes two modules, a high pressure module 2, a module low pressure 3, a reducing valve 4 and an alternator 5.
  • the steam enters by an intake unit comprising a stop valve 6 and four adjustment valves 7.
  • module 2 is connected to the reducer 4 by a flexible coupling.
  • the turbine 1 according to the invention has the same elements as the state of the art with the exception of the high pressure module 2, the size is greatly reduced (see Figure 2).
  • the spiral shape of the intake volute 22 makes it possible to generate at the entrance of the supersonic distributor a homogeneous flow whatever the azimuth.
  • the supersonic nozzle can be multi-channel. Steam can then enter the module through a multitude of openings.
  • the steam flow is adjusted by a valve setting 8.
  • the steam flow can be stopped by a stop valve 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Control Of Turbines (AREA)
EP04290986A 2003-04-17 2004-04-13 Dampfturbine mit einem einstufigen Hochdruckmodul Withdrawn EP1473438A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0304815 2003-04-17
FR0304815A FR2853929B1 (fr) 2003-04-17 2003-04-17 Turbine a vapeur comportant un corps haute pression a un seul etage d'ailettes

Publications (2)

Publication Number Publication Date
EP1473438A2 true EP1473438A2 (de) 2004-11-03
EP1473438A3 EP1473438A3 (de) 2004-11-10

Family

ID=32982305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04290986A Withdrawn EP1473438A3 (de) 2003-04-17 2004-04-13 Dampfturbine mit einem einstufigen Hochdruckmodul

Country Status (3)

Country Link
US (1) US7056086B2 (de)
EP (1) EP1473438A3 (de)
FR (1) FR2853929B1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191360A (en) * 1922-01-07 1923-05-17 Rateau Soc Improvements in or relating to fluid pressure turbines
US1494850A (en) * 1923-04-07 1924-05-20 Losel Franz Back-pressure turbine and method of utilizing high-pressure steam in turbines
FR726445A (fr) * 1931-10-28 1932-05-28 Const Mecaniques De Saint Quen Dispositif de construction particulière de turbine à vapeur à faible puissance
US1925147A (en) * 1929-12-13 1933-09-05 Ljungstroms Angturbin Stockhol Elastic fluid turbine plant
FR1159936A (fr) * 1955-12-19 1958-07-03 Worthington Corp Turbine
US4815931A (en) * 1982-05-11 1989-03-28 Aktiengesellschaft Kuehnle, Kopp & Kausch Overhung radial-flow steam turbine wheel with toothed and bolted shaft connection
DE29902285U1 (de) * 1999-02-10 1999-04-15 Schell, Otto, 91599 Dentlein Turbogeneratorvorrichtung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR980726A (fr) * 1943-02-13 1951-05-17 Centre Nat Rech Scient Procédé et dispositif pour augmenter le rendement thermique des turbines à vapeur
US2861776A (en) * 1951-12-26 1958-11-25 Herbert L Magill Reaction turbines
FR1320174A (fr) * 1962-01-25 1963-03-08 Rateau Soc Perfectionnement des enveloppes de turbomachines, notamment de turbines à vapeur
US3185854A (en) * 1964-08-14 1965-05-25 Gen Electric Turbine-generator
US3804335A (en) * 1973-05-21 1974-04-16 J Sohre Vaneless supersonic nozzle
US4150918A (en) * 1976-01-21 1979-04-24 Hollymatic Corporation Pressure gas engine
DE2625903A1 (de) * 1976-06-04 1977-12-15 Aeg Kanis Turbinen Einstufige getriebeturbinen
CA1061716A (en) * 1977-02-09 1979-09-04 James V. Theis (Jr.) Pressure gas engine
EP0539636B1 (de) * 1991-10-31 1996-06-05 Honda Giken Kogyo Kabushiki Kaisha Gasturbine
FR2700130B1 (fr) * 1993-01-06 1995-02-03 Snecma Procédé de fabrication d'un rotor monobloc à aubes creuses et rotor monobloc à aubes creuses.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191360A (en) * 1922-01-07 1923-05-17 Rateau Soc Improvements in or relating to fluid pressure turbines
US1494850A (en) * 1923-04-07 1924-05-20 Losel Franz Back-pressure turbine and method of utilizing high-pressure steam in turbines
US1925147A (en) * 1929-12-13 1933-09-05 Ljungstroms Angturbin Stockhol Elastic fluid turbine plant
FR726445A (fr) * 1931-10-28 1932-05-28 Const Mecaniques De Saint Quen Dispositif de construction particulière de turbine à vapeur à faible puissance
FR1159936A (fr) * 1955-12-19 1958-07-03 Worthington Corp Turbine
US4815931A (en) * 1982-05-11 1989-03-28 Aktiengesellschaft Kuehnle, Kopp & Kausch Overhung radial-flow steam turbine wheel with toothed and bolted shaft connection
DE29902285U1 (de) * 1999-02-10 1999-04-15 Schell, Otto, 91599 Dentlein Turbogeneratorvorrichtung

Also Published As

Publication number Publication date
FR2853929B1 (fr) 2007-04-13
EP1473438A3 (de) 2004-11-10
US7056086B2 (en) 2006-06-06
US20040219012A1 (en) 2004-11-04
FR2853929A1 (fr) 2004-10-22

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