EP2025873A1 - Dampfzuführung für eine Dampfturbine - Google Patents

Dampfzuführung für eine Dampfturbine Download PDF

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Publication number
EP2025873A1
EP2025873A1 EP07015628A EP07015628A EP2025873A1 EP 2025873 A1 EP2025873 A1 EP 2025873A1 EP 07015628 A EP07015628 A EP 07015628A EP 07015628 A EP07015628 A EP 07015628A EP 2025873 A1 EP2025873 A1 EP 2025873A1
Authority
EP
European Patent Office
Prior art keywords
pipe
steam
inner pipe
steam supply
outer pipe
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.)
Withdrawn
Application number
EP07015628A
Other languages
German (de)
English (en)
French (fr)
Inventor
Kai Dr. Wieghardt
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 EP07015628A priority Critical patent/EP2025873A1/de
Priority to CN200880102074.9A priority patent/CN101772621B/zh
Priority to EP08775350A priority patent/EP2173973B1/de
Priority to JP2010519421A priority patent/JP5027924B2/ja
Priority to DE502008002747T priority patent/DE502008002747D1/de
Priority to PCT/EP2008/059811 priority patent/WO2009019151A1/de
Priority to US12/672,134 priority patent/US8454302B2/en
Priority to AT08775350T priority patent/ATE500401T1/de
Publication of EP2025873A1 publication Critical patent/EP2025873A1/de
Withdrawn legal-status Critical Current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
    • F01D25/26—Double casings; Measures against temperature strain in casings

Definitions

  • the invention relates to a steam feed for a turbomachine comprising an inner casing and an outer casing, in particular a steam turbine, comprising: a first inner pipe for guiding flow medium, wherein the inner pipe is designed for application to an inner casing inlet opening of the inner casing, an outer pipe arranged around the inner pipe, wherein the steam supply is designed for application to an outer housing inflow opening of the turbomachine.
  • Turbomachines such as steam turbines, are operated with a flow medium.
  • water vapor is used as the flow medium, which may have a temperature of over 600 ° C at a pressure of about 300 bar.
  • Such high temperatures and pressures make increased demands on the materials of the steam turbine.
  • the area of the steam inflow is subjected to high thermal and mechanical loads.
  • a steam turbine as an embodiment of a turbomachine usually has an inner housing, an outer housing arranged around the inner housing and a rotor rotatably mounted within the inner housing for the use of highly heated live steam flowing into the steam turbine.
  • the live steam flows through so-called inflow through the outer housing and the inner housing into the flow channel. The area around these inflow is therefore subjected to high thermal loads.
  • suitable steam supply lines the hot steam is thermally decoupled from the outer casing as possible.
  • the object of the invention is to provide a steam supply which is suitable for high temperatures.
  • the invention is based inter alia on the aspect that it is advantageous if a steam supply has two pipes which are arranged coaxially one above the other, wherein the live steam flows through the inner pipe and a cooling medium flows around the inner pipe.
  • the invention has, inter alia, the advantage that the steam supply line is designed such that an outer pipe is arranged around an inner inner pipe. Between the outer pipe and the inner pipe, a gap is formed, in which a cooling medium can be flowed. This cooling medium causes cooling of the outer pipe.
  • the outer pipe can now be coupled directly to a steam turbine, the steam turbine is less thermally stressed. Thus, live steam at high temperature can be used.
  • the cooling medium is flowed into the space between the outer pipe and the inner pipe via a cooling medium inflow opening.
  • the cooling medium may in this case be an external cooling medium or originate from the steam turbine.
  • live steam at a temperature of about 620 ° C and a pressure of about 350 bar is flowed into the steam turbine and expanded in the flow channel, wherein the thermal energy of the steam is converted into mechanical energy and causes a rotation of the rotor.
  • the expanded steam may have a temperature of 500 ° C and be used as a cooling medium.
  • the expanded steam is usually brought in a reheater to a pressure of about 350 bar and as Reheater steam called.
  • This reheated steam can also be used as a cooling medium.
  • the cooling medium located around the inner pipe acts in the radial direction and thus exerts a mechanical stress on the inner pipe and on the outer pipe.
  • the inner pipe and the outer pipe are thereby mechanically relieved.
  • the outer pipe is connected to one another at a first location around the inner pipe, which is to be understood as a mechanically fixed connection.
  • This connection can be achieved for example by connecting means such as screws or the like.
  • Another way to connect the outer pipe at a first location to the inner pipe would be if the outer pipe and the inner pipe are formed centrein Culturedig.
  • the outer pipe is connected to one another at a second location with the inner pipe.
  • an inflow opening is arranged between the first and second locations. This provides a simple way to fill the cooling medium in the space between the outer pipe and the inner pipe.
  • FIG. 1 a cross-sectional view of a steam turbine 1 is shown.
  • the steam turbine 1 comprises an outer housing 2 and an inner housing 3.
  • the inner housing 3 is arranged inside the outer housing 2.
  • the inner housing 3 and the outer housing 2 is formed substantially symmetrically about a rotation axis 4.
  • a shaft 5 is rotatably supported about the axis of rotation 4.
  • a flow channel 6 is formed between the shaft 5 and the inner housing 3.
  • the flow channel 6 is characterized by blades 7 arranged on the shaft 5 and vanes 8 arranged in the inner casing 3. For the sake of clarity, only one vane and one blade with the reference symbols 8 and 7 are shown in FIG FIG. 1 characterized.
  • live steam flows via an inflow channel 9 into the steam turbine 1.
  • the live steam subsequently flows into the flow channel 6 past the guide vanes or rotor blades 8, 7, thereby releasing and cooling.
  • the thermal energy of the steam is converted into rotational energy of the shaft 5.
  • the expanded steam subsequently flows out of the steam turbine 1 via an exhaust nozzle 10.
  • the live steam has temperatures of over 600 ° C and a pressure of over 300 bar.
  • the live steam is passed through a live steam supply 11 in the steam turbine 1.
  • the FIG. 2 is a cross-sectional view, this cross-sectional view is shown in the axial direction.
  • the Steam supply 11 comprises a first inner pipe 12 for guiding a flow medium, such as the live steam.
  • the inner pipe 12 is designed to be applied to an inner housing inflow opening 13 of the inner housing 3.
  • the steam feed 11 has an outer pipe 14 arranged around the inner pipe 12.
  • the steam guide 11 is designed for application to an outer housing inflow opening 15.
  • the cooling medium primarily cools the outer pipe 14.
  • the cooling medium flows via a cooling medium inflow opening 17 into the space 16.
  • the inner pipe 12 and the outer pipe 14 are connected to one another at a first location 18, ie, the cooling medium in the space 16 is not in the room 19 can flow between the inner housing 3 and the outer housing 2.
  • the steam supply 11 is sealingly attached to one end 20 via seals 21 to the inner housing 3.
  • the cooling medium inflow port 17 is disposed between the first location 18 and a second location 22.
  • the steam feed 11 can be constructed from essentially two components, the steam feed 11 being formed from a first component 23 and a second component 24.
  • the first component 23 can be attached to the outer housing 2 via a screw connection 25.
  • the second component 24 can also be connected to the first component 23 via screw connections or similar fastening means.
  • the fasteners are in the FIG. 2 not shown in detail. As an example of a fastener may serve a screw.
  • the first component 23 comprises a first inner pipe 26. Furthermore, the first component 23 has a first outer pipe 27.
  • the second component 24 has a second inner pipe 28 and a second outer pipe 29. Between the first inner pipe 26 and the second inner pipe 28, an I-ring seal 30 can be arranged. Such an I-ring seal 30 may also be between the first outer pipe 27 and the second outer pipe 29 are arranged.
  • the inner pipe 12 and the outer pipe 4 are formed centrein Glag.
  • the same material that is used for the inner housing 3 can be used.
  • FIG. 3 an alternative embodiment of the steam feed 11 is shown.
  • the steam supply 11 according to FIG. 3 is arranged such that the outer pipe 14 attached to the outer housing 2 by means of fastening means, which are not shown in detail.
  • the steam supply 11 to an inner tube 12 which is disposed within the outer tube 14.
  • the outer tube 14 is attached to the outer housing 2 at the first attachment point 32.
  • the inner tube 12 is connected to a second attachment point 31 on an additional tube 33.
  • the additional tube 33 may consist of the same material as the outer housing 2.
  • the additional tube 33 is connected to the outer housing 2 at the first attachment point 32.
  • a further external pipe 34 is connected to the additional pipe 33.
  • the coolant may in the embodiment of the steam supply 11 according to FIG. 3 take place either in the additional tube 33 or by a cooling medium inflow opening in the outer tube 14, wherein both feed openings in the FIG. 3 are not shown in detail.
  • the outer pipe 14 is designed as a so-called thermal sleeve. That is, the outer pipe 14 assumes an axial temperature gradient.
  • An increase in the flow rate of cooling medium in the space 16 is obtained by arranging a plurality of cooling medium inflow openings 17 in the outer pipe 14.
  • the outer pipe 14 is perforated, so to speak.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP07015628A 2007-08-08 2007-08-08 Dampfzuführung für eine Dampfturbine Withdrawn EP2025873A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP07015628A EP2025873A1 (de) 2007-08-08 2007-08-08 Dampfzuführung für eine Dampfturbine
CN200880102074.9A CN101772621B (zh) 2007-08-08 2008-07-25 汽轮机的供汽装置
EP08775350A EP2173973B1 (de) 2007-08-08 2008-07-25 Dampfzuführung für eine dampfturbine
JP2010519421A JP5027924B2 (ja) 2007-08-08 2008-07-25 蒸気タービンの蒸気注入部
DE502008002747T DE502008002747D1 (de) 2007-08-08 2008-07-25 Dampfzuführung für eine dampfturbine
PCT/EP2008/059811 WO2009019151A1 (de) 2007-08-08 2008-07-25 Dampfzuführung für eine dampfturbine
US12/672,134 US8454302B2 (en) 2007-08-08 2008-07-25 Steam feed for a steam turbine
AT08775350T ATE500401T1 (de) 2007-08-08 2008-07-25 Dampfzuführung für eine dampfturbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07015628A EP2025873A1 (de) 2007-08-08 2007-08-08 Dampfzuführung für eine Dampfturbine

Publications (1)

Publication Number Publication Date
EP2025873A1 true EP2025873A1 (de) 2009-02-18

Family

ID=38955923

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07015628A Withdrawn EP2025873A1 (de) 2007-08-08 2007-08-08 Dampfzuführung für eine Dampfturbine
EP08775350A Not-in-force EP2173973B1 (de) 2007-08-08 2008-07-25 Dampfzuführung für eine dampfturbine

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08775350A Not-in-force EP2173973B1 (de) 2007-08-08 2008-07-25 Dampfzuführung für eine dampfturbine

Country Status (7)

Country Link
US (1) US8454302B2 (ja)
EP (2) EP2025873A1 (ja)
JP (1) JP5027924B2 (ja)
CN (1) CN101772621B (ja)
AT (1) ATE500401T1 (ja)
DE (1) DE502008002747D1 (ja)
WO (1) WO2009019151A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3406951A1 (de) * 2017-05-24 2018-11-28 Siemens Aktiengesellschaft Kühlungsanordnung zum kühlen einer überwurfmutter für ein ventil einer dampfturbine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800299A (en) * 1955-09-30 1957-07-23 Gen Electric Nozzlebox structure for high temperature steam turbine
GB825849A (en) * 1955-03-01 1959-12-23 Gen Electric Improvements relating to elastic fluid turbines
GB1135767A (en) * 1965-04-02 1968-12-04 Ass Elect Ind Improvements in or relating to steam turbines
EP0128343A1 (de) * 1983-06-09 1984-12-19 BBC Aktiengesellschaft Brown, Boveri & Cie. Zweigehäuseturbine mit mindestens einem Ventil für horizontale Dampfzuführung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621521B2 (ja) * 1983-06-10 1994-03-23 株式会社日立製作所 蒸気タ−ビンの主蒸気入口構造
JPH0674722B2 (ja) * 1984-10-15 1994-09-21 株式会社日立製作所 蒸気タ−ビンの蒸気導入部構造
US4772178A (en) * 1987-01-28 1988-09-20 Westinghouse Electric Corp. Thermal shield for the steam inlet connection of a steam turbine
DE3905900A1 (de) * 1989-02-25 1990-08-30 Gutehoffnungshuette Man Frischdampfdurchfuehrung fuer dampfturbinen in doppelgehaeusebauart
JPH0662936B2 (ja) 1989-07-28 1994-08-17 サンデン株式会社 過冷却性質をもつ蓄熱剤の過冷却解除方法
JPH05113104A (ja) * 1991-10-21 1993-05-07 Fuji Electric Co Ltd 蒸気タービンの抽気部
JPH07145707A (ja) * 1993-11-24 1995-06-06 Mitsubishi Heavy Ind Ltd 蒸気タービン
JP4455254B2 (ja) * 2004-09-30 2010-04-21 株式会社東芝 蒸気タービンおよびこれを備える蒸気タービンプラント

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB825849A (en) * 1955-03-01 1959-12-23 Gen Electric Improvements relating to elastic fluid turbines
US2800299A (en) * 1955-09-30 1957-07-23 Gen Electric Nozzlebox structure for high temperature steam turbine
GB1135767A (en) * 1965-04-02 1968-12-04 Ass Elect Ind Improvements in or relating to steam turbines
EP0128343A1 (de) * 1983-06-09 1984-12-19 BBC Aktiengesellschaft Brown, Boveri & Cie. Zweigehäuseturbine mit mindestens einem Ventil für horizontale Dampfzuführung

Also Published As

Publication number Publication date
DE502008002747D1 (de) 2011-04-14
EP2173973A1 (de) 2010-04-14
US20110226376A1 (en) 2011-09-22
CN101772621A (zh) 2010-07-07
JP5027924B2 (ja) 2012-09-19
EP2173973B1 (de) 2011-03-02
CN101772621B (zh) 2013-05-15
ATE500401T1 (de) 2011-03-15
WO2009019151A9 (de) 2010-06-10
JP2011510200A (ja) 2011-03-31
WO2009019151A1 (de) 2009-02-12
US8454302B2 (en) 2013-06-04

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