EP1630360B1 - Alimentation de vapeur pour le refroidissement d'une turbine a vapeur - Google Patents

Alimentation de vapeur pour le refroidissement d'une turbine a vapeur Download PDF

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Publication number
EP1630360B1
EP1630360B1 EP20040019960 EP04019960A EP1630360B1 EP 1630360 B1 EP1630360 B1 EP 1630360B1 EP 20040019960 EP20040019960 EP 20040019960 EP 04019960 A EP04019960 A EP 04019960A EP 1630360 B1 EP1630360 B1 EP 1630360B1
Authority
EP
European Patent Office
Prior art keywords
steam
piston
pressure
turbine
steam turbine
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
EP20040019960
Other languages
German (de)
English (en)
Other versions
EP1630360A1 (fr
Inventor
Norbert Pieper
Mark-Andre Dr. Schwarz
Michael Wechsung
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 EP20040019960 priority Critical patent/EP1630360B1/fr
Priority to DE200450010299 priority patent/DE502004010299D1/de
Publication of EP1630360A1 publication Critical patent/EP1630360A1/fr
Application granted granted Critical
Publication of EP1630360B1 publication Critical patent/EP1630360B1/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
    • F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
    • F01D3/04—Machines or engines with axial-thrust balancing effected by working-fluid axial thrust being compensated by thrust-balancing dummy piston or the like
    • 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

Definitions

  • the invention relates to a steam turbine in a double-shell construction with an inner housing adjacent to a thrust piston and surrounded by an outer housing, wherein the steam turbine has a gap between the piston and the outer housing, which for receiving a passing between the thrust piston and the inner housing piston leakage is provided, wherein on the outer housing at the receiving region of the piston plate vapor, a connection is arranged.
  • fans have been used in more recent concepts for steam turbines which are intended to discharge the piston leakage steam accumulating in the front area of the steam turbine between the inner housing and the outer housing into a rear steam space of the steam turbine. With such a redirecting of the hot piston leakage steam, however, no real cooling of the hot outer casing locations in the front turbine region is achieved.
  • JP 09 125909 discloses a steam turbine, wherein supply and discharge lines are provided for steam.
  • the JP 05 018205 on which the preamble of claim 1 is based discloses a steam turbine with a steam line which fluidly connects a steam supply space with a gap space.
  • the invention has for its object to improve a steam turbine mentioned above such that the outer casing is protected in a cost effective manner from overtemperature.
  • the object is achieved according to the invention with a generic steam turbine or an outer casing, wherein at the Outer housing at the receiving area of the piston leakage steam is provided a connection for supplying steam.
  • the solution according to the invention is in contrast to the previous ventilation concepts, because according to the invention, the superheated steam is not circulated and forced into a rear area of the steam turbine, but it is specifically supplied in the receiving area of the piston leakage steam (cooler) steam.
  • a possible damage to the outer housing by exceeding the allowable temperature values in the front turbine area is counteracted particularly effective in this way according to the invention.
  • the mechanical reliability of the turbine according to the invention is thereby increased for all operating conditions and sustainably extends the life of the steam turbine.
  • Another advantage of the solution according to the invention is that it can be dispensed with the use of a fan, as was required in previous ventilation concepts.
  • the inventive supply of steam at the receiving area of the piston leakage steam between the inner housing and the outer housing thus leads to a significantly improved cooling of the front turbine housing.
  • a conduit means for selectively connecting the terminal to the outer housing with at least a partial flow of a low-pressure steam supply line is provided to this a conduit means for selectively connecting the terminal to the outer housing with at least a partial flow of a low-pressure steam supply line.
  • a conduit means for selectively connecting the terminal to the outer housing with at least a partial flow of a low-pressure steam supply line is particularly useful when the steam turbine according to the invention runs as a gas and steam turbine in the so-called combined cycle operation.
  • a part of the low-pressure Zudampfes with cooling effect can be introduced into the front turbine housing with almost no additional cost.
  • the said conduit means should be designed with a branching off from a main low-pressure steam supply line.
  • the main low-pressure steam supply line can then continue at the steam turbine according to the invention at the transition region between a medium-pressure section and a low-pressure section, as is the case with known steam turbines.
  • connection arranged on the outer housing at the receiving region of the piston leakage steam should be coupled to a conduit device for selective connection to at least one partial flow of a steam discharge.
  • the said conduit means is designed with a branching branch from a main steam outlet.
  • the main steam discharge can remain unchanged and e.g. Aspirate a further portion of the vapor of a tap directly from the medium pressure Abdampf Switzerland.
  • a part of a steam turbine 10 is shown, which has a turbine shaft 12, which is partially surrounded by an inner housing 14 and an outer housing 16.
  • the outer housing 16 each adjoins the turbine shaft 12 in the left-hand end region, which is related to the figures, and is there with the aid of two sealing channels formed in the outer housing 16 in relation to that in operation Steam turbine 10 rotating turbine shaft 12 sealed.
  • a piston 20 is formed on the turbine shaft 12, which is sealed by means of a piston seal 22 with respect to the adjacent to the piston 20 inner housing 14.
  • the piston 20 is followed axially by an inflow bladder 24, which is surrounded by the inner housing 14 and can escape from the exhaust steam introduced in a substantially axially extending medium-pressure blading channel 26.
  • the medium-pressure blading channel 26 is also surrounded by the inner housing 14.
  • Axially adjacent to the medium-pressure blading channel 26 is a low-pressure precursor 28, which is then followed by the actual low-pressure turbine region 30, which is located in relation to the FIGS. 1 and 2 located on the extreme right.
  • a vane support 32 is suspended on the outer housing 16, which surrounds the inner housing 14 in total. Between the inner housing 14 and the outer housing 16 is in this way in the front (ie, with respect to the figures left) located between the turbine space 34 is formed.
  • This terminal 36 is in the embodiment according to Fig. 1 connected to a low-pressure Zudampf branch line 38 which is branched off from a low-pressure Zudampf main line 40.
  • Low-pressure Zudampf introduced into a region between the blading channel 26 and the low-pressure precursor 28.
  • a partial flow of the low-pressure Zudampfes is passed through the low-pressure branch line 38 and the port 36 into the intermediate space 34, where the low-pressure Zudampf cold in comparison to the piston leakage steam leads in particular to a cooling of the outer housing 16.
  • the terminal 36 is connected to a branch-steam discharge 42, which leads into a main steam discharge 44.
  • the main steam discharge 44 is connected to a tapping, not shown, for example, a so-called A4 tap, with the during operation of the steam turbine 10 according to Fig. 2 Steam is removed from the region between the medium-pressure blading channel 26 and the low-pressure precursor 28.
  • negative pressure of the comparatively hot piston leakage steam is sucked out of the intermediate space 34 at the same time, so that it does not heat the outer housing and it does not come to an increased temperature load on this outer housing 16.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Claims (3)

  1. Turbine ( 10 ) à vapeur en mode de construction à deux nappes, comprenant un carter ( 14 ) intérieur qui est voisin d'un piston ( 20 ) et qui est entouré d'un carter ( 16 ) extérieur, la turbine ( 10 ) à vapeur ayant un espace ( 34 ) intermédiaire entre le piston ( 20 ) et le carter ( 16 ) extérieur, qui est prévu pour la réception de vapeur de fuite du piston traversant entre le piston ( 20 ) et le carter ( 14 ) intérieur, dans laquelle
    sur le carter ( 16 ) extérieur un raccord ( 36 ) est disposé dans la partie ( 34 ) de réception de la vapeur de fuite du piston,
    caractérisé en ce que
    le raccord ( 36 ) est prévu pour apporter de la vapeur.
  2. Turbine à vapeur suivant la revendication 1,
    caractérisé en ce que
    un dispositif ( 38, 40 ) de conduit est prévu pour mettre en communication au choix le raccord ( 36 ) avec au moins un courant partiel d'un conduit d'apport de vapeur basse pression.
  3. Turbine suivant la revendication 2,
    caractérisé en ce que
    le dispositif de conduit est conformé en ayant un conduit ( 38 ) en dérivation d'un conduit ( 40 ) principal d'apport de vapeur basse pression.
EP20040019960 2004-08-23 2004-08-23 Alimentation de vapeur pour le refroidissement d'une turbine a vapeur Not-in-force EP1630360B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20040019960 EP1630360B1 (fr) 2004-08-23 2004-08-23 Alimentation de vapeur pour le refroidissement d'une turbine a vapeur
DE200450010299 DE502004010299D1 (de) 2004-08-23 2004-08-23 Dampfabführung zur kühlung der aussengehäuse in einer dampfturbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20040019960 EP1630360B1 (fr) 2004-08-23 2004-08-23 Alimentation de vapeur pour le refroidissement d'une turbine a vapeur

Publications (2)

Publication Number Publication Date
EP1630360A1 EP1630360A1 (fr) 2006-03-01
EP1630360B1 true EP1630360B1 (fr) 2009-10-28

Family

ID=34926265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040019960 Not-in-force EP1630360B1 (fr) 2004-08-23 2004-08-23 Alimentation de vapeur pour le refroidissement d'une turbine a vapeur

Country Status (2)

Country Link
EP (1) EP1630360B1 (fr)
DE (1) DE502004010299D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013217334A1 (de) 2013-08-30 2015-03-05 Siemens Aktiengesellschaft Gehäuseanordnung für eine Dampfturbine
CN106194284A (zh) * 2016-07-22 2016-12-07 东方电气集团东方汽轮机有限公司 一种汽轮机夹层蒸汽参数调整及运行的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2525042A1 (fr) * 2011-05-18 2012-11-21 Siemens Aktiengesellschaft Turbine à vapeur avec piston de compensation axial et agencement d'étanchéite pour le blocage de vapeur saturée
EP2565401A1 (fr) * 2011-09-05 2013-03-06 Siemens Aktiengesellschaft Procédé d'équilibrage des températures dans une turbine à gaz

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6809708U (de) * 1968-12-03 1973-03-08 Siemens Ag Mehrschalige axiale, drosselgeregelte dampfturbine fuer hohe druecke und temperaturen.
DE3424138A1 (de) * 1984-06-30 1986-01-09 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Luftspeichergasturbine
JP2890907B2 (ja) 1991-07-15 1999-05-17 富士電機株式会社 蒸気タービン
JPH09125909A (ja) 1995-10-30 1997-05-13 Mitsubishi Heavy Ind Ltd 複合サイクル用蒸気タービン
EP1035301A1 (fr) 1999-03-08 2000-09-13 Asea Brown Boveri AG Piston de compensation de la poussée axiale pour l'arbre d'une turbine
JP4522633B2 (ja) * 1999-08-27 2010-08-11 シーメンス アクチエンゲゼルシヤフト タービンとその漏れ流体の排出方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013217334A1 (de) 2013-08-30 2015-03-05 Siemens Aktiengesellschaft Gehäuseanordnung für eine Dampfturbine
CN106194284A (zh) * 2016-07-22 2016-12-07 东方电气集团东方汽轮机有限公司 一种汽轮机夹层蒸汽参数调整及运行的方法

Also Published As

Publication number Publication date
DE502004010299D1 (de) 2009-12-10
EP1630360A1 (fr) 2006-03-01

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