EP0362756B1 - Dispositifs réduisant les flèches et les contraintes dans les diaphragmes de tubines - Google Patents

Dispositifs réduisant les flèches et les contraintes dans les diaphragmes de tubines Download PDF

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Publication number
EP0362756B1
EP0362756B1 EP89118211A EP89118211A EP0362756B1 EP 0362756 B1 EP0362756 B1 EP 0362756B1 EP 89118211 A EP89118211 A EP 89118211A EP 89118211 A EP89118211 A EP 89118211A EP 0362756 B1 EP0362756 B1 EP 0362756B1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
space
pressure
outer ring
ring
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
EP89118211A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0362756A1 (fr
Inventor
Gérard Foucher
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.)
Alstom Holdings SA
Original Assignee
GEC Alsthom SA
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 GEC Alsthom SA filed Critical GEC Alsthom SA
Priority to AT89118211T priority Critical patent/ATE78320T1/de
Publication of EP0362756A1 publication Critical patent/EP0362756A1/fr
Application granted granted Critical
Publication of EP0362756B1 publication Critical patent/EP0362756B1/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
    • F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
    • 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
    • F01D25/246—Fastening of diaphragms or stator-rings

Definitions

  • a sealing device 17 which is applied to the internal wall of the stator to seal.
  • this outer ring 3 On the downstream face 14 of this outer ring 3 is disposed a circular support 18 which comes to bear against a ring 19 of the stator 4 located around the wheel 2 and sealing devices 13.
  • This support 18 is located as close as possible to the device 13
  • the support is provided with slots 22 (see FIG. 2).
  • the diaphragm 1 is provided on its periphery with two notches 23 near the joint plane and a notch 24 at the bottom.
  • the notches 23 receive, as is conventional, keys which suspend the diaphragm 1 in the stator 4.
  • the notch 24 also receives, in a conventional manner, a key completing the guiding and ensuring with the keys of the notches 23, the assembly with free expansion.
  • the space 25 located between the sealing means 17 and the support 18 is placed by the slots 22 in communication with the pressure P2 prevailing downstream of the wheel 2.
  • the support 18 no longer has slots as in the embodiment of FIG. 1 but seals with the crown 19 of the stator 4.
  • This ring 19 is provided with transverse openings which place the space 25 between the sealing means 17 and the support 18 in communication with the downstream of the stage 20 at the pressure P2.
  • the support 18 also seals with the crown 19 and the space 25 between the sealing means 17 and the support 18 is placed in communication by a pipe 27 ′ with one of the following stages 20 ′ where a pressure P naturally prevails lower than the pressure P2 established at the outlet of stage 20.
  • FIG 6 there is shown a third variant in which the outer ring 3 has a portion of larger diameter 28 on the edge 29 of which are arranged the sealing means 17. This portion of larger diameter has a thickness such that it can be housed between the bolts 32 used for bolting the stator 4.
  • the space 25 between the support 18 and the sealing means 17 is placed in communication with the space immediately downstream of the stage 20 by slots provided in the support 18.
  • the openings 27 shown could also be used in FIG. 4 for this connection or any other pipe bringing the space 25 into communication with an existing space downstream of the stage 20 where there is a pressure lower than the pressure P2 established at the outlet of the wheel 2.
  • FIG. 7 shows a fourth variant of the turbine according to the invention.
  • Stage 20 is identical to that shown in FIG. 1.
  • the upstream face 26 of the diaphragm 1 comprises second sealing means 31 spaced from the edge 15 which are applied against the ring 19 ⁇ of the stator located around the movable wheel 2 ⁇ of the previous stage 20 ⁇ .
  • the diaphragm 1 ⁇ of the previous stage is similar to that shown in Figure 4 and has a circular support 18 ⁇ coming to be applied by sealing against the crown 19 ⁇ of the stator. However, it does not include sealing means on the edge 15 ⁇ of the outer ring 3 ⁇ .
  • the space 25 ⁇ between stator 4 and diaphragm 1 ⁇ upstream of the support 18 ⁇ is at the pressure P0 upstream of the diaphragm 1 ⁇ while the space 25 is at the pressure downstream P2 of the stage 20 .
  • the ring 19 ⁇ is provided with openings 27 ⁇ connecting the space 25 ⁇ and the space 30 located between the sealing means 17 and the second sealing means 31.
  • the pressure difference P0 - P2 being more important than the difference P1 - P2, the force generated on the periphery of the upstream face 26 of the outer ring 3 will be greater.
  • FIG. 8 A variant of the device of Figure 7 is shown in Figure 8, the ring 19 ⁇ located above the movable wheel 2 ⁇ of the previous stage 20 ⁇ is narrower and surrounds a ring 33 secured to the diaphragm 1 ⁇ . This crown 33 is terminated by a support 18 ⁇ which is applied by sealing on the diaphragm 1.
  • the diaphragm 1 with the correction of stresses can have a thickness less than the diaphragm 1 cette where this correction is not made.
  • the stage 20 is identical to that of FIG. 7.
  • the space 30 instead of being connected to the space 25 ⁇ where the upstream pressure P0 of the diaphragm 1 ⁇ of the preceding stage prevails is joined by a communication 27 ′′′ to a space 25 ′′′ of one of the preceding stages 20 ′′′ Where there is a pressure P ′ greater than the pressure P0.
  • the force exerted on the upstream face 26 of the diaphragm 1 is therefore greater than that exerted in the device of FIG. 7 since the difference P ′ - P2 is greater than P0 - P2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Control Of Turbines (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Diaphragms And Bellows (AREA)
EP89118211A 1988-10-06 1989-10-02 Dispositifs réduisant les flèches et les contraintes dans les diaphragmes de tubines Expired - Lifetime EP0362756B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89118211T ATE78320T1 (de) 1988-10-06 1989-10-02 Konstruktive ausfuehrung eines turbinenzwischenbodens, um belastung und durchbiegung zu verhindern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8813117 1988-10-06
FR8813117A FR2637650B1 (fr) 1988-10-06 1988-10-06 Dispositifs reduisant les fleches et les contraintes dans les diaphragmes de turbines

Publications (2)

Publication Number Publication Date
EP0362756A1 EP0362756A1 (fr) 1990-04-11
EP0362756B1 true EP0362756B1 (fr) 1992-07-15

Family

ID=9370749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89118211A Expired - Lifetime EP0362756B1 (fr) 1988-10-06 1989-10-02 Dispositifs réduisant les flèches et les contraintes dans les diaphragmes de tubines

Country Status (12)

Country Link
US (1) US5024581A (enrdf_load_stackoverflow)
EP (1) EP0362756B1 (enrdf_load_stackoverflow)
JP (1) JPH02146205A (enrdf_load_stackoverflow)
CN (1) CN1013508B (enrdf_load_stackoverflow)
AT (1) ATE78320T1 (enrdf_load_stackoverflow)
CS (1) CS568089A3 (enrdf_load_stackoverflow)
DE (1) DE68902124T2 (enrdf_load_stackoverflow)
ES (1) ES2034548T3 (enrdf_load_stackoverflow)
FR (1) FR2637650B1 (enrdf_load_stackoverflow)
GR (1) GR3005956T3 (enrdf_load_stackoverflow)
MX (1) MX170952B (enrdf_load_stackoverflow)
ZA (1) ZA897626B (enrdf_load_stackoverflow)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115642A (en) * 1991-01-07 1992-05-26 United Technologies Corporation Gas turbine engine case with intergral shroud support ribs
RU2204724C2 (ru) * 2000-12-05 2003-05-20 ОАО "Турбомоторный завод" Способ регулирования температуры сетевой воды теплофикационной турбоустановки
RU2194866C2 (ru) * 2001-02-14 2002-12-20 ОАО "Турбомоторный завод" Система управления отбором пара паровой турбины
RU2196234C2 (ru) * 2001-02-20 2003-01-10 Синцов Владимир Афанасьевич Регулирующая поворотная диафрагма с приводом
RU2237171C1 (ru) * 2003-02-10 2004-09-27 Иванов Сергей Николаевич Поворотная регулирующая диафрагма паровой теплофикационной турбины
GB0319002D0 (en) * 2003-05-13 2003-09-17 Alstom Switzerland Ltd Improvements in or relating to steam turbines
DE602004023523D1 (de) 2003-08-27 2009-11-19 Muraharu Seisakusho Sagamihara Einpackvorrichtung für artikel
GB2417298B (en) * 2004-08-21 2008-12-24 Alstom Technology Ltd Sealing arrangement
ES2285915B1 (es) * 2005-10-11 2008-10-16 Airbus España, S.L. Sistema de sellado de ranuras variables para maquetas ensayadas en un tunel aerodinamico.
US7758307B2 (en) * 2007-05-17 2010-07-20 Siemens Energy, Inc. Wear minimization system for a compressor diaphragm
RU2426891C2 (ru) * 2009-07-15 2011-08-20 Закрытое акционерное общество "Уральский турбинный завод" Способ регулирования давления производственного отбора пара теплофикационной турбины
DE102014221152A1 (de) * 2014-10-17 2016-04-21 Siemens Aktiengesellschaft Abdichtung einer Dichtschalenaufhängung
FR3036435B1 (fr) * 2015-05-22 2020-01-24 Safran Ceramics Ensemble d'anneau de turbine
RU186946U1 (ru) * 2018-11-08 2019-02-11 Акционерное общество "Уральский турбинный завод" Устройство регулирования расхода рабочего тела тепловой машины

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1154777A (en) * 1914-02-21 1915-09-28 Gen Electric Attaching means for nozzles.
US1242578A (en) * 1916-09-05 1917-10-09 Moore Steam Turbine Corp Steam-turbine.
US1352277A (en) * 1919-01-09 1920-09-07 Gen Electric Elastic-fluid turbine
US1549209A (en) * 1924-09-18 1925-08-11 Bbc Brown Boveri & Cie Guide apparatus of steam turbines
GB243974A (en) * 1925-04-20 1925-12-10 Jan Kieswetter Improvements relating to turbine casings having transverse partitions and the like therein
GB374783A (en) * 1930-12-04 1932-06-16 Bbc Brown Boveri & Cie Improvements in and relating to steam turbines
DE732470C (de) * 1942-03-15 1943-03-03 Turbinenfabrik Brueckner Kanis Leitschaufeltraegerbefestigung fuer UEberdruck-Dampf- oder -Gasturbinen
GB597953A (en) * 1943-05-21 1948-02-06 Rateau Soc Improvements in gas turbines
GB702966A (en) * 1950-10-25 1954-01-27 British Thomson Houston Co Ltd Improvements in and relating to elastic fluid pressure turbines
GB767730A (en) * 1954-04-09 1957-02-06 Vickers Electrical Co Ltd "improvements relating to nozzle diaphragms for elastic fluid turbines"
US2905434A (en) * 1954-07-08 1959-09-22 Westinghouse Electric Corp Turbine apparatus
US3021110A (en) * 1960-03-01 1962-02-13 Gen Electric High temperature turbine nozzle retaining means
US3169748A (en) * 1962-12-06 1965-02-16 Westinghouse Electric Corp Turbine apparatus
JPS5313005A (en) * 1976-07-21 1978-02-06 Hitachi Ltd Turbine stage internal structure

Also Published As

Publication number Publication date
US5024581A (en) 1991-06-18
DE68902124D1 (de) 1992-08-20
ATE78320T1 (de) 1992-08-15
CN1013508B (zh) 1991-08-14
ZA897626B (en) 1990-07-25
CS568089A3 (en) 1992-10-14
ES2034548T3 (es) 1993-04-01
DE68902124T2 (de) 1992-12-17
JPH02146205A (ja) 1990-06-05
GR3005956T3 (enrdf_load_stackoverflow) 1993-06-07
FR2637650B1 (fr) 1990-11-16
MX170952B (es) 1993-09-22
EP0362756A1 (fr) 1990-04-11
CN1042967A (zh) 1990-06-13
FR2637650A1 (fr) 1990-04-13

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