EP1035301A1 - Piston de compensation de la poussée axiale pour l'arbre d'une turbine - Google Patents

Piston de compensation de la poussée axiale pour l'arbre d'une turbine Download PDF

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Publication number
EP1035301A1
EP1035301A1 EP99810204A EP99810204A EP1035301A1 EP 1035301 A1 EP1035301 A1 EP 1035301A1 EP 99810204 A EP99810204 A EP 99810204A EP 99810204 A EP99810204 A EP 99810204A EP 1035301 A1 EP1035301 A1 EP 1035301A1
Authority
EP
European Patent Office
Prior art keywords
turbine
piston
compensating piston
compensating
steam
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Withdrawn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
EP99810204A
Other languages
German (de)
English (en)
Inventor
Heinrich Lageder
Pierre Meylan
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.)
ABB Asea Brown Boveri Ltd
ABB AB
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Priority to EP99810204A priority Critical patent/EP1035301A1/fr
Publication of EP1035301A1 publication Critical patent/EP1035301A1/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the shafts of turbomachinery i.e. steam and gas turbines, point during operation a certain axial thrust.
  • This axial thrust must go through a appropriate bearing of the shaft can be compensated or recorded
  • the shafts are equipped with thrust compensating pistons and thrust bearings.
  • the Thrust compensation pistons which are present in each turbine section, are the same Thrust in every load case so that the load on the thrust bearing is within certain limits remains.
  • the Compensating piston which is integrated in a part of the machine, usually stands via pipes with the medium that drives the turbine in connection.
  • Thrust compensation pistons limit the optimal length of the machine and work also negatively affect wave dynamic properties. So the choice of Diameter of the labyrinths of the blading cannot be chosen arbitrarily small, which leads to further losses.
  • Task of Invention is a compensating piston to compensate for the axial thrust Create shaft from a turbine with which it is possible to adjust the length of the shaft the machine between the bearings and the diameter of the labyrinths Blading with regard to increased efficiency of the turbine more flexible shape.
  • this is achieved in that the compensating piston in one Housing outside the housing of the at least one turbine is arranged and an inlet and an outlet exist which cover the pressure areas of the Connect the compensating piston to the medium of the at least one turbine that the compensating piston counteracts an axial displacement of the shaft.
  • the radial clearances within the compensating piston housing can be very advantageous be kept small if there is a cooler in the inlet and outlet, so that on the pressure surfaces of the compensating piston essentially only the pressure and not the temperature works.
  • the inventive arrangement of Compensating piston outside the turbine casing gives a larger one Scope for the optimal design, in particular the length of the shaft and the Radial and axial games of the labyrinths of the blading and one advantageous smaller distance to the bearing of the shaft.
  • a compensating piston 4 to compensate for the axial thrust Shaft 1 represented by a turbine 2, which according to the invention is outside the Turbine housing is arranged.
  • the turbine 2 is equipped with a live steam line 11 is supplied with steam and the steam released by the turbine 2 is supplied by a Lead 12 diverted away again.
  • the compensating piston 4 is in a piston housing 9 arranged. To achieve axial thrust compensation, it is necessary to Pressure areas of the compensating piston 4 through lines 5, 6 with the medium, which operates the turbine 2.
  • the line is 5.6 therefore connected to the live steam supply line 11 and the discharge line 12.
  • the Supply line 5 is used to remove the steam at a high pressure, and the Derivation 6 for returning the medium to the derivation 12 of the turbine 2 a lower pressure.
  • the compensating piston 4 is arranged so that the Pressure difference, which acts on the turbine 2, on the pressure surfaces of the Compensating piston 4 acts axially in a correspondingly opposite direction.
  • a cooling element 7 is in the supply line 5, which leads to the compensation piston 4, installed. It is also conceivable that Omit cooling element 7 and the supply line 5 only by natural convection cool. This is possible because the flow rates to the inlet 5 and outlet 6 be kept small.
  • the medium of Turbine 2 for example the steam of a steam turbine, to be cooled.
  • the steam becomes one Steam turbine lowered to a temperature below the saturation temperature.
  • the steam condenses and the compensating piston 4 acts as a liquid labyrinth.
  • the leakage losses of the Compensating piston 4 are then kept very low.
  • This variant is suitable especially at high pressures of the medium, for example at one High pressure turbine.
  • FIG. 2 shows a second embodiment of the inventive Compensating piston 4 shown.
  • the compensation piston 4 has in this embodiment according to the pressure levels of the turbines 2 two Partial piston 10. This only happens, for example, and can vary depending on the design the turbine vary.
  • a cooling element exists in the feed lines 5 7, which lowers the temperature of the medium. It is conceivable to do this with the to do already described in Figure 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP99810204A 1999-03-08 1999-03-08 Piston de compensation de la poussée axiale pour l'arbre d'une turbine Withdrawn EP1035301A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99810204A EP1035301A1 (fr) 1999-03-08 1999-03-08 Piston de compensation de la poussée axiale pour l'arbre d'une turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99810204A EP1035301A1 (fr) 1999-03-08 1999-03-08 Piston de compensation de la poussée axiale pour l'arbre d'une turbine

Publications (1)

Publication Number Publication Date
EP1035301A1 true EP1035301A1 (fr) 2000-09-13

Family

ID=8242718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810204A Withdrawn EP1035301A1 (fr) 1999-03-08 1999-03-08 Piston de compensation de la poussée axiale pour l'arbre d'une turbine

Country Status (1)

Country Link
EP (1) EP1035301A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1630360A1 (fr) 2004-08-23 2006-03-01 Siemens Aktiengesellschaft Alimentation et evacuation de vapeur pour le refroidissement d'une turbine a vapeur
WO2009135802A1 (fr) * 2008-05-09 2009-11-12 Siemens Aktiengesellschaft Turbomachine avec piston d'équilibrage de poussée
EP2192266A1 (fr) * 2008-11-26 2010-06-02 Siemens Aktiengesellschaft Dispositif de rotor pour une turbine à vapeur et turbine à vapeur
EP2431570A1 (fr) * 2010-09-16 2012-03-21 Siemens Aktiengesellschaft Turbine à vapeur comprenant un piston d'équilibrage de poussée et blocage de vapeur saturé
CN103573414A (zh) * 2012-07-20 2014-02-12 株式会社东芝 涡轮机及其操作方法
CN103717838A (zh) * 2011-08-04 2014-04-09 西门子公司 包括推力平衡活塞的蒸汽轮机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE228869C (fr) *
DE289941C (fr) *
FR376479A (fr) * 1906-04-11 1907-08-10 Birger Ljungstroem Dispositif pour équilibrer automatiquement la pression axiale sur les parties mobiles d'une turbine à gaz
FR593737A (fr) * 1924-03-03 1925-08-29 Brown Perfectionnements au montage des pistons d'équilibrage de la poussée axiale des turbines à prise de vapeur
DE561755C (de) * 1930-10-04 1932-10-18 Escher Wyss Maschf Ag Einrichtung zur Axialschubentlastung einer Kreiselmaschine, wie Verdichter, Pumpe oder Turbine
FR1133318A (fr) * 1955-01-04 1957-03-26 Rateau Soc équilibre axial des mobiles de turbo-machines convenant en particulier aux turbomachines à axe vertical ou incliné
FR2002702A1 (fr) * 1968-02-27 1969-10-31 Escher Wyss Ag

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE228869C (fr) *
DE289941C (fr) *
FR376479A (fr) * 1906-04-11 1907-08-10 Birger Ljungstroem Dispositif pour équilibrer automatiquement la pression axiale sur les parties mobiles d'une turbine à gaz
FR593737A (fr) * 1924-03-03 1925-08-29 Brown Perfectionnements au montage des pistons d'équilibrage de la poussée axiale des turbines à prise de vapeur
DE561755C (de) * 1930-10-04 1932-10-18 Escher Wyss Maschf Ag Einrichtung zur Axialschubentlastung einer Kreiselmaschine, wie Verdichter, Pumpe oder Turbine
FR1133318A (fr) * 1955-01-04 1957-03-26 Rateau Soc équilibre axial des mobiles de turbo-machines convenant en particulier aux turbomachines à axe vertical ou incliné
FR2002702A1 (fr) * 1968-02-27 1969-10-31 Escher Wyss Ag

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1630360A1 (fr) 2004-08-23 2006-03-01 Siemens Aktiengesellschaft Alimentation et evacuation de vapeur pour le refroidissement d'une turbine a vapeur
CN102016231B (zh) * 2008-05-09 2013-12-25 西门子公司 具有推力平衡活塞的涡轮机
WO2009135802A1 (fr) * 2008-05-09 2009-11-12 Siemens Aktiengesellschaft Turbomachine avec piston d'équilibrage de poussée
CN102016231A (zh) * 2008-05-09 2011-04-13 西门子公司 具有推力平衡活塞的涡轮机
DE102008022966B4 (de) * 2008-05-09 2014-12-24 Siemens Aktiengesellschaft Rotationsmaschine
RU2507399C2 (ru) * 2008-05-09 2014-02-20 Сименс Акциенгезелльшафт Турбомашина с уравнительным поршнем против сдвига
EP2192266A1 (fr) * 2008-11-26 2010-06-02 Siemens Aktiengesellschaft Dispositif de rotor pour une turbine à vapeur et turbine à vapeur
CN103097663B (zh) * 2010-09-16 2015-08-19 西门子公司 蒸汽涡轮机
CN103097663A (zh) * 2010-09-16 2013-05-08 西门子公司 在蒸汽涡轮机中用于阻断湿蒸汽的阻断线路
WO2012035047A1 (fr) * 2010-09-16 2012-03-22 Siemens Aktiengesellschaft Circuit d'arrêt de turbines à vapeur pour arrêter la vapeur humide
EP2431570A1 (fr) * 2010-09-16 2012-03-21 Siemens Aktiengesellschaft Turbine à vapeur comprenant un piston d'équilibrage de poussée et blocage de vapeur saturé
US9726041B2 (en) 2010-09-16 2017-08-08 Siemens Aktiengesellschaft Disabling circuit in steam turbines for shutting off saturated steam
CN103717838A (zh) * 2011-08-04 2014-04-09 西门子公司 包括推力平衡活塞的蒸汽轮机
CN103717838B (zh) * 2011-08-04 2016-02-17 西门子公司 包括推力平衡活塞的蒸汽轮机
CN103573414A (zh) * 2012-07-20 2014-02-12 株式会社东芝 涡轮机及其操作方法
CN103573414B (zh) * 2012-07-20 2015-10-28 株式会社东芝 涡轮机及其操作方法

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