EP0906493B1 - Turbomachine et procede de refroidissement d'une turbomachine - Google Patents

Turbomachine et procede de refroidissement d'une turbomachine Download PDF

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Publication number
EP0906493B1
EP0906493B1 EP97928113A EP97928113A EP0906493B1 EP 0906493 B1 EP0906493 B1 EP 0906493B1 EP 97928113 A EP97928113 A EP 97928113A EP 97928113 A EP97928113 A EP 97928113A EP 0906493 B1 EP0906493 B1 EP 0906493B1
Authority
EP
European Patent Office
Prior art keywords
cooling
turbomachine
rotor
fluid
feed
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
EP97928113A
Other languages
German (de)
English (en)
Other versions
EP0906493A1 (fr
Inventor
Heinrich Oeynhausen
Edwin Gobrecht
Helmut Pollak
Andreas FELDMÜLLER
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 EP0906493A1 publication Critical patent/EP0906493A1/fr
Application granted granted Critical
Publication of EP0906493B1 publication Critical patent/EP0906493B1/fr
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
    • F01D9/00—Stators
    • F01D9/06—Fluid supply conduits to nozzles or the like
    • F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
    • 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
    • F01D3/02—Machines or engines with axial-thrust balancing effected by working-fluid characterised by having one fluid flow in one axial direction and another fluid flow in the opposite direction
    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means

Definitions

  • the invention relates to a turbomachine, in particular one Steam turbine, with a housing and at least partially inflow area for action fluid formed by the housing and a method for cooling at least one Inflow area of a component assigned to a turbomachine.
  • the object of the invention is to provide a turbomachine, which in a thermally highly stressed area, in particular an inflow area for action fluid, is coolable.
  • Another object of the invention is a method for cooling at least one adjacent to the inflow area Specify component of the turbomachine.
  • a turbomachine in particular a steam turbine
  • task accomplished by such a which is a housing with an at least partially the housing has an inflow area for action fluid
  • a supply for a cooling fluid in the housing is provided, by cooling the housing, in particular the housing walls adjacent to the inflow area, is feasible.
  • the cooling fluid can process steam from a steam turbine plant with several partial turbines, act separate cooling steam or cooling air.
  • the turbomachine preferably has a shielding element adjacent to the inflow area which is along a major axis in the housing extending blade carrier opposite the action fluid shielded and attached to the housing by a bracket is, the feed through the holder into the shielding element is introduced.
  • the shielding element can be on multiple positions via a bracket or several Brackets to be connected to the housing. It will achieved several cooling effects at the same time, namely one Cooling the housing to those adjacent to the inflow area Walls, cooling the bracket, cooling the Shielding element and thus also cooling of the rotor blade carrier.
  • the holder is preferably in at least one direction seen the first guide vane row integrated into the action fluid.
  • a branch line preferably a plurality of branch lines are provided, which is (are) connected to the feed and into the inflow area and / or one facing away from the inflow area Side. This will provide additional film cooling of the first row of guide vanes.
  • the shielding element preferably also has at least one a branch line, which is connected to the feeder and flows into the inflow area. This leads to film cooling of the shielding element and thus indirectly to one further reduction of the thermal load on the blade carrier.
  • the shielding element can also have a Have connected cavity connected, creating an increased Heat transfer in the shielding element towards the Blade carrier is avoided.
  • a gap is towards the blade carrier formed, into which the feed opens.
  • the gap can thus be filled with cooling fluid, so that heat transfer of the one heated by the action fluid Shielding element is reduced in the blade carrier. Since the shielding element over the bracket with the housing connected, it is spaced from the blade carrier, so that an outflow of the cooling fluid with the between the housing and blade carriers guaranteeing flowing action fluid is. From the gap preferably leads a cooling fluid line, in particular in the form of a radial bore, into the blade carrier. This leads to especially with a blade carrier, made up of two or several rotor disks arranged centrally to each other, by means of a tie rod that runs through appropriate openings are connected to further cooling.
  • cooling fluid into one between the Tie rod and the rotor disk formed annulus.
  • Turbine shaft possible, in particular in that at least one axial running parallel to the main axis Bore is provided, into which the cooling fluid line opens.
  • the turbo machine enables a feed of Cooling fluid through the housing also reduces a leakage flow of action fluid between a gap rotating component (blade, blade carrier) and a fixed component (guide vane, housing) the steam turbine.
  • This can cause these so-called gap losses be reduced by appropriate branch lines in the housing or the blade carrier cooling fluid from the supply, the space or the cooling fluid line can be branched off and guided into this gap.
  • Such a branch line is therefore preferably from the feeder for Cooling fluid guided so that it is in a gap between the housing and blade or vane and blade carrier empties. The sealability of a non-contact seal between a rotating and a fixed component the turbomachine is thus significantly increased.
  • a guidance of cooling fluid is preferably particularly suitable for a turbo machine in which the shielding element for power division and / or for redirecting the action fluid in the direction the main axis is formed.
  • the inflow area is preferred for guiding the action fluid in one direction essentially perpendicular to the main axis of the blade carrier educated.
  • the turbo machine is preferred a double-flow steam turbine, in particular a medium-pressure steam turbine, in which both a current division and a Redirection of the action fluid takes place. Of course is such cooling even with a single-flow steam turbine possible in their inflow area.
  • Process steam from a steam turbine plant as cooling fluid is used over the various branches the entire steam process fed back, the as Cooling fluid used steam when flowing through the feed is heated. Compared to cooling in which the process steam is lost, can also be used Efficiency increase of the steam turbine can be achieved.
  • the on a method of cooling one to the inflow area a turbomachine, in particular a steam turbine, adjacent component directed task is solved by that cooling fluid through at least partially the inflow area forming housing, especially in the area of the inflow area and from there a shielding element to reduce the temperature load one in the Housing arranged blade carrier is supplied.
  • turbo machine shows schematically and not to scale the only figure through a section of a longitudinal section a double-flow medium pressure steam turbine.
  • the section of a turbomachine shown in the figure 1 shows a longitudinal section through a double-flow medium-pressure steam turbine a steam turbine plant.
  • 15 of the turbomachine is one along one Main axis 2 extending blade carrier 11 shown. This is made from a plurality of rotor disks 29, only one of them is shown for the sake of clarity is.
  • a tie rod 28 Through the rotor disk 29 is along the center the main axis 2, a tie rod 28, which the rotor disks assembles to the blade carrier 11.
  • the blade carrier 11 can also be made as one be made in one piece existing turbine shaft.
  • the housing 15 is an inflow region 3 for action fluid 4 formed, which is essentially along an inflow axis 17 extends perpendicular to the main axis 2.
  • a cooling fluid supply 8 provided.
  • This feed 8 goes into one respective guide blade 6 of the first guide blade row 16 about.
  • the first row of guide vanes 16 also serves as a holder 22 for an annular shielding element 19.
  • This Shielding element 19 is arched into the inflow region 3 and thus causes a redirection of the action fluid 4 as well as a shield of the blade carrier 11 (Turbine rotor) compared to this action fluid 4. From the Guide vane 6 guides the feed 8 into the shielding element 19 in.
  • a barrier fluid line 14 provided by the Annular gap 27 open into a blade carrier area 26, which is directly opposite a moving blade 6a. hereby there is a flow of the cooling fluid 5 in the between the blade carrier region 26 and the guide blade 6a Gap in it.
  • the cooling fluid 5 has additional there the effect of a barrier fluid through which a flow of the action fluid 4 prevented through this gap, at least significantly reduced. Let her through the gap losses in a non-contact Seal and thus increase the efficiency of the steam turbine.
  • cooling fluid lines through which cooling fluid 5 can flow 14 are provided in the housing 15 and connect the Feed 8 in the area of the first row of guide vanes 16 a housing area 25, which is directly a blade 7 is opposite. This is in addition to a cooling also a seal of this gap by the now additionally given cooling fluid 5 acting as a barrier fluid.
  • the invention is characterized by a cooling of preferably several components of a turbomachine, the on an inflow area for a hot action fluid, in particular Limit steam above 550 ° C.
  • the cooling takes place by introducing a cooling fluid, in particular process steam a steam turbine system or cooling air, through a supply, which in a near-surface area, the inflow area facing part of the housing is arranged. From there the cooling air through the first row of guide vanes into a shielding element led, which attached to the guide vane row is.
  • Both in the housing, the guide vane, and the Shielding element can be provided branch lines flow into the inflow area and thus film cooling the enable each component.
  • Barrier fluid lines branching off from the supply additionally as a barrier fluid in a gap between a rotating one Component (blade, blade carrier) and one fixed components (guide vane, housing) are guided, creating the seal of a non-contact seal is significantly improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Heat Treatment Of Articles (AREA)

Claims (9)

  1. Turbomachine, notamment turbine à vapeur, comprenant un carter (15) et une zone (3) d'entrée de fluide et (4) d'action formée au moins en partie par le carter (15), une admission (8) d'un fluide (5) de refroidissement, un support (11) d'aubes mobiles disposé dans le carter (15) et s'étendant le long d'un axe (2) principal et un élément (19) qui forme écran, qui est disposé dans la zone (3) d'entrée, qui sert à protéger le support (11) d'aubes mobiles du fluide (4) d'action et qui est fixé par une pièce (22) de maintien au carter (15), l'admission (8) étant guidée par la pièce (22) de maintien, un espace (9) intermédiaire étant formé entre l'élément (19) formant écran et le support (11) d'aubes mobiles, espace intermédiaire dans lequel débouche l'admission (8),
       caractérisée en ce que la pièce (22) de fixation est constituée sous la forme d'une première aube (6) directrice.
  2. Turbomachine (1) suivant la revendication 1, dans laquelle l'admission passe dans le carter (15) au moins en partie alentour de la zone (3) d'entrée pour son refroidissement.
  3. Turbomachine (1 ) suivant l'une des revendications précédentes, dans laquelle la pièce (22) de maintien a au moins un conduit (23) de dérivation qui communique avec l'admission (8) et qui débouche dans la zone (3) d'entrée.
  4. Turbomachine (1) suivant l'une des revendications précédentes, dans laquelle il est prévu dans l'élément (19) formant écran au moins un conduit (24) de dérivation qui communique avec l'admission (8) et qui débouche dans la zone (3) d'entrée.
  5. Turbomachine (1) suivant l'une des revendications précédentes, dans laquelle un conduit (13) pour du fluide de refroidissement va de l'espace (9) intermédiaire au support (11) d'aubes mobiles.
  6. Turbomachine (1) suivant la revendication 5, dans laquelle le support (11) d'aubes mobiles a au moins deux disques (29) de rotor qui sont reliés entre eux par un tirant (28), le conduit (13) de fluide de refroidissement débouchant dans un espace (27) annulaire entre un disque (29) de rotor et un tirant (28).
  7. Turbomachine (1) suivant l'une des revendications précédentes, dans laquelle l'élément (19) formant écran est constitué pour conduire un courant de fluide et/ou pour dévier du fluide en direction de l'axe (2) principal.
  8. Turbomachine (1) suivant l'une des revendications précédentes, dans laquelle il est prévu au moins un conduit (14) pour du fluide d'arrêt, qui communique avec l'admission (8) et qui débouche dans une zone (25) du carter opposée à une aube (7) mobile ou dans une zone (26) d'une aube mobile opposée à une aube (6a) directrice.
  9. Turbomachine (1) suivant l'une des revendications précédentes, qui est une turbine (15) à vapeur moyenne pression à deux flux.
EP97928113A 1996-06-21 1997-06-09 Turbomachine et procede de refroidissement d'une turbomachine Expired - Lifetime EP0906493B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624805 1996-06-21
DE19624805 1996-06-21
PCT/DE1997/001162 WO1997049900A1 (fr) 1996-06-21 1997-06-09 Turbomachine et procede de refroidissement d'une turbomachine

Publications (2)

Publication Number Publication Date
EP0906493A1 EP0906493A1 (fr) 1999-04-07
EP0906493B1 true EP0906493B1 (fr) 2003-08-20

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP97923804A Expired - Lifetime EP0906494B1 (fr) 1996-06-21 1997-05-12 Arbre de turbine et procede de refroidissement d'un arbre de turbine
EP97928113A Expired - Lifetime EP0906493B1 (fr) 1996-06-21 1997-06-09 Turbomachine et procede de refroidissement d'une turbomachine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP97923804A Expired - Lifetime EP0906494B1 (fr) 1996-06-21 1997-05-12 Arbre de turbine et procede de refroidissement d'un arbre de turbine

Country Status (12)

Country Link
US (2) US6102654A (fr)
EP (2) EP0906494B1 (fr)
JP (2) JP3943136B2 (fr)
KR (2) KR20000022066A (fr)
CN (2) CN1106496C (fr)
AT (2) ATE230065T1 (fr)
CZ (2) CZ423498A3 (fr)
DE (2) DE59709016D1 (fr)
ES (1) ES2206724T3 (fr)
PL (2) PL330755A1 (fr)
RU (2) RU2182976C2 (fr)
WO (2) WO1997049901A1 (fr)

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CN103603694B (zh) * 2013-12-04 2015-07-29 上海金通灵动力科技有限公司 一种降低汽轮机主轴轴承处工作温度的结构
EP2918788A1 (fr) * 2014-03-12 2015-09-16 Siemens Aktiengesellschaft Procédé de refroidissement d'une turbine à vapeur
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EP3009597A1 (fr) * 2014-10-15 2016-04-20 Siemens Aktiengesellschaft Refroidissement contrôlé d'arbres de turbines
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RU2665797C1 (ru) * 2016-07-04 2018-09-04 Публичное акционерное общество "ОДК-Уфимское моторостроительное производственное объединение" (ПАО "ОДК-УМПО") Способ и устройство охлаждения вала авиационного газотурбинного двигателя
CN109236379A (zh) * 2018-09-11 2019-01-18 上海发电设备成套设计研究院有限责任公司 一种内部蒸汽冷却的高参数汽轮机的双流高温转子
CN109236378A (zh) * 2018-09-11 2019-01-18 上海发电设备成套设计研究院有限责任公司 一种内部蒸汽冷却的高参数汽轮机的单流高温转子
JP7271408B2 (ja) * 2019-12-10 2023-05-11 東芝エネルギーシステムズ株式会社 タービンロータ
CN111520195B (zh) * 2020-04-03 2022-05-10 东方电气集团东方汽轮机有限公司 一种汽轮机低压进汽室导流结构及其参数设计方法
CN113914946A (zh) * 2021-10-29 2022-01-11 华能上海燃机发电有限责任公司 一种联合循环机组的透平端轴承热控线缆冷却装置

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Also Published As

Publication number Publication date
RU2182975C2 (ru) 2002-05-27
JP2000512706A (ja) 2000-09-26
JP3943136B2 (ja) 2007-07-11
EP0906494A1 (fr) 1999-04-07
CZ422798A3 (cs) 1999-04-14
CN1227619A (zh) 1999-09-01
EP0906494B1 (fr) 2002-12-18
US6048169A (en) 2000-04-11
PL330755A1 (en) 1999-05-24
PL330425A1 (en) 1999-05-10
ATE230065T1 (de) 2003-01-15
US6102654A (en) 2000-08-15
EP0906493A1 (fr) 1999-04-07
WO1997049900A1 (fr) 1997-12-31
CN1106496C (zh) 2003-04-23
JP3939762B2 (ja) 2007-07-04
CZ423498A3 (cs) 1999-04-14
CN1100193C (zh) 2003-01-29
CN1228134A (zh) 1999-09-08
ES2206724T3 (es) 2004-05-16
KR20000022065A (ko) 2000-04-25
WO1997049901A1 (fr) 1997-12-31
RU2182976C2 (ru) 2002-05-27
DE59710625D1 (de) 2003-09-25
JP2000512708A (ja) 2000-09-26
KR20000022066A (ko) 2000-04-25
DE59709016D1 (de) 2003-01-30
ATE247766T1 (de) 2003-09-15

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