EP1865155A1 - Carter de turbine à vapeur ou à gaz - Google Patents

Carter de turbine à vapeur ou à gaz Download PDF

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Publication number
EP1865155A1
EP1865155A1 EP06011628A EP06011628A EP1865155A1 EP 1865155 A1 EP1865155 A1 EP 1865155A1 EP 06011628 A EP06011628 A EP 06011628A EP 06011628 A EP06011628 A EP 06011628A EP 1865155 A1 EP1865155 A1 EP 1865155A1
Authority
EP
European Patent Office
Prior art keywords
turbine
turbine housing
metallic material
steam
gray
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
EP06011628A
Other languages
German (de)
English (en)
Other versions
EP1865155B1 (fr
Inventor
Lutz Lender
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to EP20060011628 priority Critical patent/EP1865155B1/fr
Publication of EP1865155A1 publication Critical patent/EP1865155A1/fr
Application granted granted Critical
Publication of EP1865155B1 publication Critical patent/EP1865155B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • F01D25/005—Selecting particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0466—Nickel
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/21—Manufacture essentially without removing material by casting
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/13—Refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
    • F05D2300/131—Molybdenum
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/13—Refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
    • F05D2300/132—Chromium
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • F05D2300/171—Steel alloys

Definitions

  • the invention relates to a turbine housing for a steam turbine and / or a gas turbine. Furthermore, the invention relates to a method for producing such a turbine housing.
  • Turbine housings of the type mentioned above often come into contact with erosive or corrosive flow media.
  • the casings of steam turbines are often exposed to steam conditions with erosive or corrosive properties.
  • Such turbine housings have therefore hitherto been designed as welded constructions with welded high-alloyed metal sheets or manufactured entirely from high-alloy cast steel. The production of such turbine housing is very expensive.
  • An object of the invention is to improve a turbine housing of the type mentioned above and a method of the type mentioned in that the turbine housing can be produced more cheaply, but at the same time has a high wear resistance in operation.
  • This object is achieved according to the invention with a generic turbine housing in which the turbine housing at least partially gray and / or ductile iron contains as a base material, wherein in the gray and / or ductile iron at least one element is embedded, which has a high alloyed metallic material.
  • the object is achieved by a generic method which comprises the steps of providing at least one element comprising a high-alloyed metallic material, and producing at least one section of the turbine housing made of gray and / or nodular cast iron with simultaneous Embedding the at least one, the high-alloy metallic material having element in the portion of the door box housing.
  • a highly alloyed metallic material is to be understood here as meaning an alloy in which at least one of the alloying elements has a mass fraction of more than 5%.
  • a highly alloyed metallic material exhibiting element according to the invention may be designed in particular as a high-alloy sheet.
  • Cast iron is here understood to mean a cast iron with lamellar graphite, in particular according to DIN 1691.
  • a gray cast iron forming a base material of the turbine housing according to the invention can be cast and machined excellently. As raw materials of gray cast iron, almost 100% recycled materials are usually used. The gray cast iron is thus inexpensive to produce.
  • Spheroidal cast iron is understood to mean cast iron with nodular graphite, which is produced by means of so-called "pressure methods".
  • materials according to DIN 1693 are considered nodular cast iron in this sense.
  • Ductile iron materials are characterized by high toughness and strength. They are easy to work with, vibration damping and, in addition, design weldable. Ductile iron is also inexpensive to produce.
  • the production costs of the turbine housing can be significantly reduced.
  • the turbine housing By embedding the element containing the high-alloy metallic material in the base material at suitable locations, the turbine housing nevertheless obtains suitable wear resistance against erosive or corrosive states of the flow medium of the turbine, in particular with respect to erosive or corrosive vapor states.
  • the turbine housing according to the invention has improved mechanical and technological properties.
  • the strength of the turbine housing can be increased over the prior art weldments.
  • Furthermore can be made by gray and / or ductile iron in a simple manner any shape. By using gray and / or nodular cast iron, more cost-effective machining of the turbine housing is furthermore possible.
  • the at least one element comprising the high-alloyed metallic material is cast into the gray and / or nodular cast iron.
  • the at least one section of the turbine housing is produced by casting, wherein during casting, the at least one element is poured into the section of the turbine housing.
  • the element comprising the high-alloyed metallic material can be embedded in the gray and / or nodular cast iron in a particularly simple and efficient manner in terms of production technology. It can also be made a particularly strong and stable connection between the gray and / or ductile iron and the element.
  • the at least one element comprising the high-alloyed metallic material has the form of a bar or bar.
  • the resistance of the element comprising the high-alloyed metallic material to erosive or corrosive media is particularly high when the high-alloyed metallic material has at least one of the chemical elements carbon, chromium, nickel and / or molybdenum.
  • the carbon content in the high-alloyed metallic material is about 0.03%, the chromium content about 13% and / or the nickel content about 4%. It is particularly useful if the high-alloyed metallic material X3CrNiMo13-4 has.
  • the at least one element having the high-alloyed metallic material is expedient for the at least one element having the high-alloyed metallic material to be arranged in a region of the turbine housing which is acted upon by steam during operation of the associated turbine.
  • the at least one element comprising the high-alloyed metallic material is arranged in a region of a transition between different components of the turbine housing. This makes it possible to prevent erosive or corrosive properties of the flow medium of the associated turbine in transition areas between different components of the turbine housing causing damage.
  • the element comprising the high-alloyed metallic material is arranged in the region of a seal between different components of the turbine housing.
  • Fig. 1 shows an embodiment of a turbine housing 10 for a double-flow steam turbine.
  • the turbine housing 10 has an inflow section 12 for introducing pressurized heated steam.
  • the vapor flows along a symmetry axis 14 of the inflow section 12 that is vertically aligned in the figure.
  • the steam is deflected in turbine blade sections 20 of the turbine housing 10 arranged on both sides with respect to the inflow section 12.
  • the steam flows substantially perpendicular to the axis of symmetry 13 of the inflow section 12, thereby driving a rotor of the steam turbine via turbine blades.
  • a hollow chamber 18 adjoins a wall 16 of the inflow section 12.
  • the respective hollow chamber 18 has a respective separation plane 22 to the adjoining turbine blade section 20 at a respective side of the hollow chamber 18 opposite the wall 16 of the inflow section 12. Furthermore, the respective hollow chamber 18 is limited with a perpendicular to the axis of symmetry 14 of the inflow 12 aligned and the hollow chamber 18 to the turbine interior limiting boundary wall 26.
  • a sealing ring 28 is provided in the area of the boundary wall 26 arranged to the left of the symmetry axis 14 of the inflow section 12 according to the FIGURE.
  • the turbine housing 10 has gray and / or nodular cast iron as the base material.
  • gray and / or nodular cast iron are in particular at locations of the turbine housing 10, which are acted upon in the operation of the steam turbine with erosive or corrosive vapor states, high-alloyed metallic material having cast elements or high-alloy sheets. These elements have the material X3CrNiMo13-4. Examples of the arrangement of such elements are shown in the figure.
  • the parting planes 22 each have a bolt 24 or a rod made of the high-alloyed metallic material.
  • the sealing ring 28 is made of the high-alloyed metallic material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP20060011628 2006-06-06 2006-06-06 Carter de turbine à vapeur ou à gaz et procédé de production correspondant Not-in-force EP1865155B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20060011628 EP1865155B1 (fr) 2006-06-06 2006-06-06 Carter de turbine à vapeur ou à gaz et procédé de production correspondant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20060011628 EP1865155B1 (fr) 2006-06-06 2006-06-06 Carter de turbine à vapeur ou à gaz et procédé de production correspondant

Publications (2)

Publication Number Publication Date
EP1865155A1 true EP1865155A1 (fr) 2007-12-12
EP1865155B1 EP1865155B1 (fr) 2012-05-23

Family

ID=37487558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060011628 Not-in-force EP1865155B1 (fr) 2006-06-06 2006-06-06 Carter de turbine à vapeur ou à gaz et procédé de production correspondant

Country Status (1)

Country Link
EP (1) EP1865155B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2196628A1 (fr) * 2008-12-10 2010-06-16 Siemens Aktiengesellschaft Support d'aube directrice

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19742621A1 (de) * 1997-09-26 1999-04-08 Siemens Ag Bauteil, insbesondere für eine Wellendichtung einer Strömungsmaschine
DE10110804A1 (de) * 2001-03-06 2002-09-12 Euroflamm Gmbh Verfahren zum Herstellen einer metallischen Schicht auf der Innenseite eines Turbinengehäuses sowie Teil eines Turbinengehäuses für eine Verbrennungskraftmaschine
US20050106006A1 (en) * 2003-11-15 2005-05-19 Alstom Technology Ltd Steam turbine and method for the production of such a steam turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19742621A1 (de) * 1997-09-26 1999-04-08 Siemens Ag Bauteil, insbesondere für eine Wellendichtung einer Strömungsmaschine
DE10110804A1 (de) * 2001-03-06 2002-09-12 Euroflamm Gmbh Verfahren zum Herstellen einer metallischen Schicht auf der Innenseite eines Turbinengehäuses sowie Teil eines Turbinengehäuses für eine Verbrennungskraftmaschine
US20050106006A1 (en) * 2003-11-15 2005-05-19 Alstom Technology Ltd Steam turbine and method for the production of such a steam turbine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2196628A1 (fr) * 2008-12-10 2010-06-16 Siemens Aktiengesellschaft Support d'aube directrice

Also Published As

Publication number Publication date
EP1865155B1 (fr) 2012-05-23

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