EP0961869B1 - Flanschabdichtung am einströmabschnitt eines turbinengehäuses - Google Patents

Flanschabdichtung am einströmabschnitt eines turbinengehäuses Download PDF

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Publication number
EP0961869B1
EP0961869B1 EP98909288A EP98909288A EP0961869B1 EP 0961869 B1 EP0961869 B1 EP 0961869B1 EP 98909288 A EP98909288 A EP 98909288A EP 98909288 A EP98909288 A EP 98909288A EP 0961869 B1 EP0961869 B1 EP 0961869B1
Authority
EP
European Patent Office
Prior art keywords
sealing surface
turbine
contour
valve housing
screw holes
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.)
Expired - Lifetime
Application number
EP98909288A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0961869A1 (de
Inventor
Klaus Lochner
Hartmut Schreiber
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP0961869A1 publication Critical patent/EP0961869A1/de
Application granted granted Critical
Publication of EP0961869B1 publication Critical patent/EP0961869B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F01D25/243—Flange connections; Bolting arrangements
    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for 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
    • F05D2240/00—Components
    • F05D2240/40—Use of a multiplicity of similar components

Definitions

  • the invention relates to an inflow section of a Turbine housing of a steam turbine, in particular an industrial turbine.
  • a such a steam turbine or flow turbine with a mechanical Performance of z. B. 5 to 100 MW is usually used as an industrial turbine.
  • An industrial turbine Just like a power plant turbine is also an industrial turbine with an inflow section provided, via which the steam turbine is supplied Live steam flows into the turbine housing.
  • the setting the live steam flow takes place by means of a number of control valves, that as single or group control valves in one with the inflow section of the turbine housing over a Flange connected valve housing are arranged.
  • a corresponding Flange connection with a single flow opening is e.g. known from CH 665 450 A5.
  • One more Flange connection enclosing flow openings is off WO85 / 03986 known in the case of variable fastening elements the relative position of the control valve or valves to the turbine housing is adjustable.
  • the invention is therefore based on the object of an inflow section specify a turbine housing, which is a special suitable sealing to an attached valve housing having.
  • the corresponding sealing surfaces in the inflow section on the one hand and on the other hand in the control valve housing to a sealing surface common to all flow openings summarized and expediently have one in the area waisted between adjacent flow openings Outer contour on.
  • each flow opening with a number of screw holes at least two different diameters for Screws are provided according to different dimensions.
  • each of e.g. B. four flow openings a shoulder contour to support a corresponding one Has collar contour of the valve housing.
  • the advantages achieved with the invention are in particular in that by forming a sealing surface in such a way that these each have a control valve associated flow opening completely encloses a particularly reliable seal between the turbine housing and the control valve housing is achieved.
  • This allows a corresponding Turbine housing having steam turbine particularly high Live steam parameters can be realized.
  • FIG. 1 shows the upper region of an inflow section 1 Turbine housing of a steam turbine, on which a valve housing 2 with four control valves 3 in the exemplary embodiment put on and via a flange 4, 5 with this is screwed.
  • a number of bolt-shaped are for screwing Screws 6 provided in the area of one of the Number of control valves 3 corresponding number of flow openings 7 are arranged distributed on the flange circumference. The screws 6 are connected to the connecting flange 4 of the inflow section 1 in thread engagement.
  • each protective tube 9 maintains a high fresh steam temperature from in the direction of arrow 11 via the control valves 3 and through the flow openings 7 into the inflow section 1 incoming live steam and on the other hand a high live steam pressure away from its housing.
  • a high fresh steam temperature from in the direction of arrow 11 via the control valves 3 and through the flow openings 7 into the inflow section 1 incoming live steam and on the other hand a high live steam pressure away from its housing.
  • the seal between the inflow section 1 and the valve housing 2 is done by pressing two metallic surfaces Sealing surfaces on top of each other, which are without intermediate layer of additional sealing material. This is in the kind of tongue and groove connection in the edge area of everyone Flow opening 7 of the inflow section 1 a circumferential Shoulder contour 13 created, in which a corresponding Collar contour 14 of the valve housing 2 engages.
  • the inner contour of the sealing surface 15 corresponds to the Opening contour of the individual circular in the embodiment Flow openings 3 so that these from the sealing surface 15 are completely enclosed.
  • the sealing surfaces of the collar contour 14 of the connecting flange 5 of the valve housing 2 are circular, the web width of which is slightly smaller than the web width F of the sealing surface 5.
  • the outer contour 16 of the sealing surface 15 is expediently designed waisted in the area between the flow openings 3 and as far as possible to the overall contour of the arrangement the flow openings 3 adapted.
  • This outer contour 16 is advantageously also the arrangement of screw holes 17, 18 for receiving the screw bolts 6.
  • the screw holes 17, 18 are each with same radial distance to the corresponding flow opening 3 arranged so that each flow opening approximately is completely surrounded by screw holes 17, 18. This ensures a particularly reliable after a screw connection Sealing each individual flow opening 3 and thus the entire flange connection 4, 5.
  • the screw holes 17 and 18 have a different diameter d 1 and d 2 . Accordingly, the respective bolts 6 are of different thicknesses.
  • the screw holes 18 with a comparatively large diameter d 2 are expediently only provided in the area between the flow openings 7 and thus in the waist areas of the outer contour 16 of the sealing surface 15.
  • Three opposite screw holes 18 with large diameters d 2 are arranged symmetrically on both sides in the two outer waist areas, while only two opposite screw holes 18 of the same diameter d 2 are provided on both sides in the middle waist area of the outer contour 16 of the sealing surface 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Housings (AREA)
  • Gasket Seals (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP98909288A 1997-02-06 1998-01-27 Flanschabdichtung am einströmabschnitt eines turbinengehäuses Expired - Lifetime EP0961869B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19704556A DE19704556C1 (de) 1997-02-06 1997-02-06 Einströmabschnitt eines Turbinengehäuses
DE19704556 1997-02-06
PCT/DE1998/000239 WO1998035139A1 (de) 1997-02-06 1998-01-27 Flanschabdichtung am einströmabschnitt eines turbinengehäuses

Publications (2)

Publication Number Publication Date
EP0961869A1 EP0961869A1 (de) 1999-12-08
EP0961869B1 true EP0961869B1 (de) 2001-11-14

Family

ID=7819525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98909288A Expired - Lifetime EP0961869B1 (de) 1997-02-06 1998-01-27 Flanschabdichtung am einströmabschnitt eines turbinengehäuses

Country Status (7)

Country Link
EP (1) EP0961869B1 (enrdf_load_stackoverflow)
JP (1) JP4202428B2 (enrdf_load_stackoverflow)
CN (1) CN1093213C (enrdf_load_stackoverflow)
BR (1) BR9807666A (enrdf_load_stackoverflow)
DE (2) DE19704556C1 (enrdf_load_stackoverflow)
IN (1) IN192464B (enrdf_load_stackoverflow)
WO (1) WO1998035139A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5988290B2 (ja) * 2012-05-31 2016-09-07 株式会社日立製作所 ケーシング、およびケーシングを備えるターボ機械および圧縮機

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696942C (de) * 1938-08-02 1940-10-02 Siemens Schuckertwerke Akt Ges Flanschverbindung an Gehaeusen fuer hohe Druecke und Temperaturen, insbesondere von Dampf- und Gasturbinen
DE889899C (de) * 1938-08-16 1953-09-14 Siemens Ag Dampfturbinengehaeuse
NL88081C (enrdf_load_stackoverflow) * 1951-11-30
CH665450A5 (de) * 1983-06-09 1988-05-13 Bbc Brown Boveri & Cie Ventil fuer horizontale dampfzufuehrung an zweigehaeuseturbinen.
US4592699A (en) * 1984-03-05 1986-06-03 Dresser Industries, Inc. Clamping assembly
US5031314A (en) * 1989-07-28 1991-07-16 Westinghouse Electric Corp. Method of measuring joint gaps and restoring same
DD290703A5 (de) * 1989-12-22 1991-06-06 Veb Bergmann-Borsig,De Einstroemung einer einschaligen dampfturbine mit duesengruppenregelung

Also Published As

Publication number Publication date
CN1246910A (zh) 2000-03-08
DE59802141D1 (de) 2001-12-20
CN1093213C (zh) 2002-10-23
BR9807666A (pt) 2000-02-15
EP0961869A1 (de) 1999-12-08
DE19704556C1 (de) 1998-04-30
JP4202428B2 (ja) 2008-12-24
JP2001512544A (ja) 2001-08-21
IN192464B (enrdf_load_stackoverflow) 2004-04-24
WO1998035139A1 (de) 1998-08-13

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