EP2396518B1 - Turbine à vapeur à trois coques avec une soupape - Google Patents

Turbine à vapeur à trois coques avec une soupape Download PDF

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Publication number
EP2396518B1
EP2396518B1 EP20100703429 EP10703429A EP2396518B1 EP 2396518 B1 EP2396518 B1 EP 2396518B1 EP 20100703429 EP20100703429 EP 20100703429 EP 10703429 A EP10703429 A EP 10703429A EP 2396518 B1 EP2396518 B1 EP 2396518B1
Authority
EP
European Patent Office
Prior art keywords
valve
housing
ring
diffuser
inner housing
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.)
Not-in-force
Application number
EP20100703429
Other languages
German (de)
English (en)
Other versions
EP2396518A1 (fr
Inventor
Heinz Dallinger
Andreas Ulma
Thomas Müller
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 EP20100703429 priority Critical patent/EP2396518B1/fr
Publication of EP2396518A1 publication Critical patent/EP2396518A1/fr
Application granted granted Critical
Publication of EP2396518B1 publication Critical patent/EP2396518B1/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
    • 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
    • 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
    • F01D25/26—Double casings; Measures against temperature strain in casings
    • 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
    • F01D9/00—Stators
    • F01D9/06—Fluid supply conduits to nozzles or the like

Definitions

  • the invention relates to a turbomachine with a valve, wherein the turbomachine in inner inner housing, an outer inner housing and an outer housing, wherein the valve comprises a valve diffuser and a valve housing, wherein the valve housing is connected via a valve flange with the outer housing, wherein the inner inner housing is connected via a first angle ring connection with the valve diffuser.
  • a steam turbine conventionally includes a rotatably mounted rotor and a housing disposed about the rotor. Between the rotor and the inner housing, a flow channel is formed.
  • the housing in a steam turbine must be able to fulfill several functions.
  • the guide vanes are arranged in the flow channel on the housing and, secondly, the inner housing must withstand the pressure and the temperatures of the flow medium for all load and special operating cases.
  • the flow medium is steam.
  • the housing must be designed such that inlets and outlets, which are also referred to as taps, are possible. Another feature that a case must meet is the possibility of a shaft end passing through the case.
  • the high voltages, pressures, and temperatures that occur during operation require that the materials be properly selected and that the design be selected to provide mechanical integrity and functionality. This requires that high-quality materials are used, especially in the area of the inflow and the first Leitschaufelnuten.
  • nickel-base alloys are suitable because they withstand the stresses occurring at high temperatures.
  • the use of such a nickel-based alloy is associated with new challenges.
  • the cost of nickel-base alloys is comparatively high and, in addition, the manufacturability of nickel-base alloys, e.g. limited by limited casting possibilities.
  • the use of nickel-based materials must be minimized.
  • the nickel-based materials are poor heat conductors.
  • the temperature gradients over the wall thickness are so steep that thermal stresses are comparatively high.
  • Two-shell steam turbines are known, for example from the EP 0 128 343 A .
  • the inner casing is arranged around the rotor and the outer casing around the inner casing.
  • the valve essentially comprises a valve housing and a valve diffuser arranged in the valve.
  • the valve diffuser is usually designed for guiding the flow medium. If the valve diffuser and the inner housing were rigidly coupled together by means of frictional connections, this would lead to stresses and possibly to deformations that are undesirable. Therefore, so-called.
  • Angular ring connections are used.
  • the valve diffuser and the inner housing each have a groove in which an angle ring is arranged. This results in that a thermal movement can be compensated in both an axial and in a radial direction.
  • a further inner housing is now additionally added between the inner inner housing and the outer housing, which designates the outer inner housing can be.
  • the outer inner housing also performs as a result of thermal changes from a thermal movement, which may possibly interfere with the valve diffuser.
  • Another requirement is that the space between the inner inner casing and the outer inner casing as well as the outer inner casing and the outer casing should be sealed. Nevertheless, mechanical stresses due to thermal movements should be avoided.
  • the object of the invention is to offer a way to couple a valve to a three-shell steam turbine, the coupling is structurally simple.
  • turbomachine with a valve
  • the turbomachine comprises an inner inner housing, an outer inner housing and an outer housing
  • the valve comprises a valve diffuser and a valve housing
  • the valve housing is connected via a valve flange with the outer housing
  • the inner inner housing is connected via a first angular connection with the valve diffuser
  • the outer inner housing is connected via a second angular ring connection with the valve diffuser
  • a valve ring is shrunk on the valve diffuser and is adapted to receive the second angular ring connection.
  • the invention is based on the aspect that an existing valve diffuser device only has to be changed slightly in order to be coupled to a three-shell steam turbine. For this purpose, it is necessary that a valve ring is shrunk onto the valve diffuser and is designed such that a receptacle of the second angular ring connection is possible.
  • valve ring has a second Ventilringnut for receiving the second valve ring.
  • a structurally simple solution is specified, with which it is possible to ensure a thermal movement between the valve diffuser and the outer inner housing.
  • valve diffuser for flowing a flow medium in a flow direction and the second Ventilringnut is formed substantially parallel to the flow direction.
  • a steam turbine is, for example, a turbomachine.
  • the turbomachine comprises an inner inner casing 3, an outer inner casing 4 disposed around the inner inner casing 3, and an outer casing 10 disposed around the outer inner casing 4
  • Valve housing 11 is coupled via a flange 12 to the outer housing.
  • a valve diffuser 6 is coupled via a first angular ring connection 13 and a second angle ring connection 14 to the inner inner housing 3 and the outer inner housing 4.
  • a flow channel 9 is formed, in which a hot live steam flows. This hot live steam flows in a flow direction 15 into the steam turbine.
  • a cooling steam In the space 7 between the inner inner housing 3 and the outer inner housing 4 is a cooling steam.
  • the first angle ring connection 13 comprises a first angle ring 1.
  • the first angle ring 1 comprises a first angle ring leg 16 and a second angle ring leg 17.
  • the first angle annular leg 16 is inserted into a mating inner inner housing groove 18.
  • the second angle ring leg 17 is inserted into a matching valve diffuser groove 19.
  • the valve diffuser 6 can execute a movement by thermal expansion in relation to the inner inner housing 3, both in the flow direction 15 and perpendicular to the flow direction 20.
  • the second angle ring connection 14 comprises a second angle ring 2 and a valve ring 5 shrunk onto the valve diffuser 6.
  • the second angle ring 2 comprises a first angle ring leg 21 and a second angle ring leg 22.
  • the first angle ring leg 21 is inserted into a corresponding valve ring groove 23.
  • the second angle ring leg 20 is inserted correspondingly in an outer réellegepurusenut 24.
  • the first angle ring connection 13 and the second angle ring connection 14 allow a movement both in the flow direction 15 and perpendicular to the flow direction 20.
  • the valve ring 5 is by means of common Shrunk methods on the valve diffuser 6.
  • the valve ring groove 23 is in this case formed essentially parallel to the flow direction 15.
  • the inner inner housing groove 18 is formed substantially parallel to the flow direction 15.
  • the valve diffuser groove 19 and the outer inner housing groove 24 are formed substantially perpendicular to the flow direction 15. Due to the vertical arrangement of the inner inner housing groove 18 and the Ventilringnut 23 to the valve diffuser groove 19 and outer inner housing groove 24, a thermal displacement in both the flow direction 15 and perpendicular to the flow direction 20 can be compensated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Housings (AREA)
  • Control Of Turbines (AREA)

Claims (3)

  1. Turbomachine ayant une vanne,
    la turbomachine comprenant une carcasse (3) intérieure intérieure, une carcasse (4) intérieure extérieure et une carcasse (10) extérieure,
    la vanne comprenant un diffuseur (6) et un corps (11),
    le corps (11) de la vanne étant relié à la carcasse (10) extérieure par une bride (12),
    la carcasse (3) intérieure intérieure étant reliée au diffuseur (6) de la vanne par une première liaison (13) annulaire en équerre,
    caractérisée en ce que
    la carcasse (4) intérieure extérieure est reliée au diffuseur (6) de la vanne par une deuxième liaison (14) annulaire en équerre et en ce qu'un anneau (5) de la vanne est rétreint sur le diffuseur (6) de la vanne et est constitué pour la réception de la deuxième liaison (14) annulaire en équerre.
  2. Turbomachine suivant la revendication 1,
    dans laquelle le diffuseur (6) de la vanne est constitué pour l'écoulement d'un fluide en écoulement dans un sens (15) d'écoulement et l'anneau (5) de la vanne a une rainure (23) de réception d'un deuxième anneau (2) en équerre.
  3. Turbomachine suivant la revendication 2,
    dans laquelle la rainure (23) de l'anneau de vanne est sensiblement parallèle au sens (15) d'écoulement.
EP20100703429 2009-02-10 2010-01-22 Turbine à vapeur à trois coques avec une soupape Not-in-force EP2396518B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20100703429 EP2396518B1 (fr) 2009-02-10 2010-01-22 Turbine à vapeur à trois coques avec une soupape

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09001834A EP2216514A1 (fr) 2009-02-10 2009-02-10 Turbine à vapeur à trois coques avec une soupape
EP20100703429 EP2396518B1 (fr) 2009-02-10 2010-01-22 Turbine à vapeur à trois coques avec une soupape
PCT/EP2010/050719 WO2010091929A1 (fr) 2009-02-10 2010-01-22 Turbine à vapeur à triple enveloppe comprenant une soupape

Publications (2)

Publication Number Publication Date
EP2396518A1 EP2396518A1 (fr) 2011-12-21
EP2396518B1 true EP2396518B1 (fr) 2015-04-29

Family

ID=40792930

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09001834A Withdrawn EP2216514A1 (fr) 2009-02-10 2009-02-10 Turbine à vapeur à trois coques avec une soupape
EP20100703429 Not-in-force EP2396518B1 (fr) 2009-02-10 2010-01-22 Turbine à vapeur à trois coques avec une soupape

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09001834A Withdrawn EP2216514A1 (fr) 2009-02-10 2009-02-10 Turbine à vapeur à trois coques avec une soupape

Country Status (3)

Country Link
EP (2) EP2216514A1 (fr)
CN (1) CN102317582A (fr)
WO (1) WO2010091929A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2947277A1 (fr) * 2014-05-22 2015-11-25 Siemens Aktiengesellschaft Liaison de bague de butée d'angle démontable
CN104033190B (zh) * 2014-06-26 2016-08-24 上海电气电站设备有限公司 一种三层壳汽轮机的进汽结构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59224404A (ja) * 1983-06-01 1984-12-17 Fuji Electric Co Ltd 超高温蒸気タ−ビンの蒸気導入管
CH665450A5 (de) * 1983-06-09 1988-05-13 Bbc Brown Boveri & Cie Ventil fuer horizontale dampfzufuehrung an zweigehaeuseturbinen.
US5443589A (en) * 1993-12-30 1995-08-22 Brandon; Ronald E. Steam turbine bell seals
US6638014B2 (en) * 2001-08-17 2003-10-28 Alstom (Switzerland) Ltd Valve arrangement for a power plant
DE102004012599A1 (de) * 2004-03-12 2005-09-29 Alstom Technology Ltd Druckentlastung einer Flanschverbindung in Überströmleitungen zwischen Frischdampfventil und HD-Dampfturbineneintritt

Also Published As

Publication number Publication date
CN102317582A (zh) 2012-01-11
EP2216514A1 (fr) 2010-08-11
WO2010091929A1 (fr) 2010-08-19
EP2396518A1 (fr) 2011-12-21

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