WO1998035139A1 - Flanschabdichtung am einströmabschnitt eines turbinengehäuses - Google Patents

Flanschabdichtung am einströmabschnitt eines turbinengehäuses Download PDF

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Publication number
WO1998035139A1
WO1998035139A1 PCT/DE1998/000239 DE9800239W WO9835139A1 WO 1998035139 A1 WO1998035139 A1 WO 1998035139A1 DE 9800239 W DE9800239 W DE 9800239W WO 9835139 A1 WO9835139 A1 WO 9835139A1
Authority
WO
WIPO (PCT)
Prior art keywords
inflow section
turbine
sealing surface
housing
flow openings
Prior art date
Application number
PCT/DE1998/000239
Other languages
German (de)
English (en)
French (fr)
Inventor
Klaus Lochner
Hartmut Schreiber
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to BR9807666-3A priority Critical patent/BR9807666A/pt
Priority to JP53354598A priority patent/JP4202428B2/ja
Priority to DE59802141T priority patent/DE59802141D1/de
Priority to EP98909288A priority patent/EP0961869B1/de
Publication of WO1998035139A1 publication Critical patent/WO1998035139A1/de
Priority to US09/369,718 priority patent/US6099246A/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
    • 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 steam turbine In a steam turbine, steam serving as the flow medium is expanded to perform condensation until condensation occurs.
  • a steam turbine or flow turbine with a mechanical power of z. B. 5 to 100 MW is usually used as an industrial turbine.
  • an industrial turbine is also provided with an inflow section via which the steam turbine is supplied
  • Live steam flows into the turbine housing.
  • the live steam flow is adjusted by means of a number of control valves, which are arranged as single or group control valves in a valve housing connected to the inflow section of the turbine housing via a flange.
  • a corresponding flange connection with a single flow opening is e.g. known from CH 665 450 A5.
  • the invention is therefore based on the object of specifying an inflow section of a turbine housing which has a particularly suitable seal to an attached valve housing.
  • sealing surfaces in the inflow section on the one hand and in the control valve housing on the other are combined to form a sealing surface common to all throughflow openings and expediently have a waisted in the area between adjacent throughflow openings
  • the flange connection advantageously has on the one hand an arrangement of screw holes adapted to the outer contour of the sealing surface.
  • a number of screw holes with at least two different diameters are provided for screws corresponding to different dimensions along the outer contour of the sealing surface of each flow opening.
  • a tongue and groove engagement is provided within the flange connection in the area of the sealing surfaces, each of z. B. four flow openings has a shoulder contour for supporting a corresponding collar contour of the valve housing.
  • the advantages achieved by the invention consist in particular in that a particularly reliable seal between the turbine housing and the control valve housing is achieved by designing a sealing surface in such a way that it completely surrounds each flow opening associated with a control valve.
  • a particularly high live steam parameters can be realized in a steam turbine having a corresponding turbine housing.
  • a particularly high surface pressure in the sealing surface area is achieved in that, on the one hand, the outer contour of the sealing surface waits in the area between adjacent flow openings is formed, and that, on the other hand, appropriately differently dimensioned screws are arranged equidistantly along this waisted outer contour.
  • FIG. 1 shows a longitudinal section through an inflow section of a turbine housing with a flanged control valve housing
  • FIG. 1 shows the upper region of an inflow section 1 of a turbine housing of a steam turbine, on which a valve housing 2 with four control valves 3 in the exemplary embodiment is placed and screwed to it via a flange connection 4, 5.
  • a number of bolt-shaped screws 6 are provided, which are arranged in the region of a number of through-flow openings 7 corresponding to the number of control valves 3 on the flange periphery. The screws 6 are in threaded engagement with the connecting flange 4 of the inflow section 1.
  • the sealing between the inflow section 1 and the valve housing 2 takes place by surface pressure of two metallic sealing surfaces on one another, which face each other without the interposition of additional sealing material.
  • a circumferential shoulder contour 13 is created in the manner of a tongue and groove connection in the edge region of each throughflow opening 7 of the inflow section 1, into 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 through-flow openings 3 in the exemplary embodiment, so that they are each completely enclosed by the sealing surface 15.
  • the radial web width F of the sealing surface 15 in each flow opening 3 in its outer regions is smaller than the radial web width F '/ 2 in the region between adjacent flow openings 3.
  • the sealing surfaces of the collar contour 14 of the connecting flange 5 of the valve housing 2 are circular, whereby whose web width 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 to be waisted in the area between the throughflow openings 3 and thereby largely corresponds to the overall contour of the to H o IT- ⁇ L ⁇

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Housings (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
PCT/DE1998/000239 1997-02-06 1998-01-27 Flanschabdichtung am einströmabschnitt eines turbinengehäuses WO1998035139A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BR9807666-3A BR9807666A (pt) 1997-02-06 1998-01-27 Segmento de admissão de uma carcaça de turbina
JP53354598A JP4202428B2 (ja) 1997-02-06 1998-01-27 タービンケーシングの流入部
DE59802141T DE59802141D1 (de) 1997-02-06 1998-01-27 Flanschabdichtung am einströmabschnitt eines turbinengehäuses
EP98909288A EP0961869B1 (de) 1997-02-06 1998-01-27 Flanschabdichtung am einströmabschnitt eines turbinengehäuses
US09/369,718 US6099246A (en) 1998-01-27 1999-08-06 Admission section of a turbine casing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19704556A DE19704556C1 (de) 1997-02-06 1997-02-06 Einströmabschnitt eines Turbinengehäuses
DE19704556.1 1997-02-06

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/369,718 Continuation US6099246A (en) 1998-01-27 1999-08-06 Admission section of a turbine casing

Publications (1)

Publication Number Publication Date
WO1998035139A1 true WO1998035139A1 (de) 1998-08-13

Family

ID=7819525

Family Applications (1)

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

Country Status (7)

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

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

Citations (6)

* 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
CH303760A (de) * 1951-11-30 1954-12-15 Bbc Brown Boveri & Cie Flanschabdichtung an Druckgefässen, insbesondere an Gehäusen von Dampf- und Gasturbinen.
WO1985003986A1 (en) * 1984-03-05 1985-09-12 Dresser Industries, Inc. Clamping assembly
CH665450A5 (de) 1983-06-09 1988-05-13 Bbc Brown Boveri & Cie Ventil fuer horizontale dampfzufuehrung an zweigehaeuseturbinen.
US5031314A (en) * 1989-07-28 1991-07-16 Westinghouse Electric Corp. Method of measuring joint gaps and restoring same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD290703A5 (de) * 1989-12-22 1991-06-06 Veb Bergmann-Borsig,De Einstroemung einer einschaligen dampfturbine mit duesengruppenregelung

Patent Citations (6)

* 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
CH303760A (de) * 1951-11-30 1954-12-15 Bbc Brown Boveri & Cie Flanschabdichtung an Druckgefässen, insbesondere an Gehäusen von Dampf- und Gasturbinen.
CH665450A5 (de) 1983-06-09 1988-05-13 Bbc Brown Boveri & Cie Ventil fuer horizontale dampfzufuehrung an zweigehaeuseturbinen.
WO1985003986A1 (en) * 1984-03-05 1985-09-12 Dresser Industries, Inc. Clamping assembly
US5031314A (en) * 1989-07-28 1991-07-16 Westinghouse Electric Corp. Method of measuring joint gaps and restoring same

Also Published As

Publication number Publication date
BR9807666A (pt) 2000-02-15
CN1093213C (zh) 2002-10-23
DE19704556C1 (de) 1998-04-30
EP0961869B1 (de) 2001-11-14
DE59802141D1 (de) 2001-12-20
EP0961869A1 (de) 1999-12-08
JP2001512544A (ja) 2001-08-21
IN192464B (ja) 2004-04-24
JP4202428B2 (ja) 2008-12-24
CN1246910A (zh) 2000-03-08

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