EP0965732B1 - Anneau de sertissage avec prise de vapeur pour turbine - Google Patents

Anneau de sertissage avec prise de vapeur pour turbine Download PDF

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Publication number
EP0965732B1
EP0965732B1 EP98810543A EP98810543A EP0965732B1 EP 0965732 B1 EP0965732 B1 EP 0965732B1 EP 98810543 A EP98810543 A EP 98810543A EP 98810543 A EP98810543 A EP 98810543A EP 0965732 B1 EP0965732 B1 EP 0965732B1
Authority
EP
European Patent Office
Prior art keywords
inner casing
shrink ring
ring
shrink
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.)
Expired - Lifetime
Application number
EP98810543A
Other languages
German (de)
English (en)
Other versions
EP0965732A1 (fr
Inventor
Peter Graf
Tihomir Stojkovic'
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.)
General Electric Switzerland GmbH
Original Assignee
Alstom Schweiz 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 Alstom Schweiz AG filed Critical Alstom Schweiz AG
Priority to EP98810543A priority Critical patent/EP0965732B1/fr
Priority to DE59808462T priority patent/DE59808462D1/de
Priority to CNB991080297A priority patent/CN1246571C/zh
Priority to US09/328,433 priority patent/US6203271B1/en
Priority to JP11165616A priority patent/JP2000054806A/ja
Publication of EP0965732A1 publication Critical patent/EP0965732A1/fr
Application granted granted Critical
Publication of EP0965732B1 publication Critical patent/EP0965732B1/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
    • 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 high-pressure or medium-pressure turbine as a single machine or a combined high-pressure medium-pressure turbine with a lower and upper part existing inner housing and an outer housing, and in particular one Connection of these parts of the inner housing by means of shrink rings and a Tapping to discharge steam from the turbine into a pipeline to one apparatus standing outside the turbine.
  • shrink rings typically, several such shrink rings are at regular intervals arranged.
  • the invention described here now relates in particular to Shrink ring technology in the area of tapping the turbine.
  • the shrink rings and the tapping ring are each made up of several bolts and screws fixed to the inner housing so that the rings do not move in relation to the housing can move.
  • a disadvantage of this prior art is that for the tapping and Holding the inner housing together using shrink rings in the area of the Tapping and several components and small parts are required, which individually manufactured and assembled. In particular, the manufacture of a cast tap ring several manufacturing steps. For the many required Components and small parts ultimately result in a long manufacturing and assembly time and the resulting high costs.
  • the task is accomplished by a steam turbine according to the preamble of the claim 1 solved, which has a shrink ring in the area of the tap, which over the Tapping slot of the turbine is arranged and one at the location of the tapping slot has the semi-open cavity facing the inner housing, the Cavity together with the outer surface of the inner housing an annular space forms in which the tapping steam flowing through the tapping slot collects.
  • the shrink ring is flat on both sides of the cavity, so that its Contours are matched to those of the inner housing.
  • the shrink ring combines So the function of both the shrink ring and the tap ring in one only part and is referred to here as a combined shrink ring tap ring.
  • the shrink ring has an opening for a removal nozzle that leads sealingly through the outer housing to a pipeline.
  • the advantage of the combined shrink ring according to the invention is that it consists of a single component, which has both functions, that of Holding the turbine housing parts together as well as forming one Collection space for bleed steam from the turbine. Instead of several parts like with the prior art described at the beginning, is only a single part for to manufacture and assemble these two functions.
  • the combined shrink ring tap ring according to the invention is in one Operation turned by means of a forging rifle. Because only a large part instead of If several parts have to be produced, the production time is significant shortened. In particular, no more cast parts are required, several require expensive work steps. The assembly time is also reduced, because only one part has to be assembled instead of several parts. Finally is also significantly reduced the number of small parts such as axial fixings, which further Saves time during assembly.
  • Figure 1 shows a steam turbine 1 with tap ring and shrink ring according to the State of the art. It has a shaft 2 and a blade channel 3, with Rotor blades 4 and guide blades 5.
  • the steam turbine 1 is one Enclosed inner housing 6 and an outer housing 7. On the outside contour of the vane duct 3, the steam turbine has a bleed slot 8, which 360 ° through the inner housing 6 into the space between the inner and outer housing 6.7 leads.
  • the inner housing 6 is along the tap slot 8 of several Ribs 9 held together around the circumference, one of which is shown in the figure dashed line is indicated.
  • a molded tap ring 11 in the form of a Arranged tire, with a through the tapping ring 11 and the inner housing 6 closed, dense annular space 10 is formed over the tap slot 8.
  • the Tapping ring 11 is fixed to inner housing 6 by retaining rings 12.
  • To the Tap ring 11 is also a pipe socket, not shown, arranged by the outer housing 7 leads to the outside. Tapping steam flows from the blade channel 3 the steam turbine through the bleed slot 8, collects in the annular space 10 and reaches a feed water preheater, boiler or through a pipeline other heating system.
  • the inner housing 6 is also held together by a plurality of shrink rings 14. These shrink rings 14 and the tapping ring 8 are each provided with spring bolts 13 connected to the inner housing 6, which prevent the rings from twist the housing.
  • FIG. 2 shows a steam turbine 1 of a type similar to that described in FIG. 1 but with the combined shrink ring tap ring according to the invention.
  • the combined Shrink ring tapping ring 20 consists of a single forged part. To the Pages 21, the shrink ring 20 is formed flat on the inside and the Adjusted outer surface of the inner housing 6, so that the ring 20 at the Shrink seals to the inner housing.
  • the combined shows in the middle Shrink ring tapping ring 20 on the side facing the inner housing 6 half-open cavity.
  • the outer contour has a curvature 23, whereby a kind of bridge from a side part 21 of the combined shrink ring to other side part 21 forms.
  • the shrink ring is due to the domed shape more flexible, which is advantageous for the thermal expansions of the inner housing 6 is.
  • the straight contour of the combined shrink ring tap ring 20 is also conceivable and would be simpler in terms of production technology.
  • the Curvature 23 is somewhat more complex to produce in comparison.
  • FIG. 3 shows a further view of the combined shrink ring tapping ring 20.
  • the curvature 23 in the middle of the ring 20, the curvature 23, the cavity its inside and the flat parts 21 shown on the sides of the ring.
  • an opening 22 In the Curvature 23 is arranged in the lower region, an opening 22 that the assembly an extraction nozzle 24 to conduct the bleed steam through the Outer housing is used.
  • the opening 22 is designed such that the removal nozzle 24 is vertical can be arranged.
  • a vertical arrangement simplifies assembly the outer housing.
  • the opening is preferably in the lower region of the Shrink ring tapping rings 20, so that any condensate can accumulate can leak.
  • an opening in the upper area is also conceivable.
  • the Extraction nozzle 24 is slightly offset in Figure 3 from the lowest point on the ring arranged.
  • the removal nozzle 24 is expediently designed such that the flow from the annular space 10 in the extraction port 24 favors as possible becomes.
  • both the diameter of the extraction nozzle is at least the same the width of the cavity as well as the end of the extraction nozzle the contours of the annulus so that no edges protrude into the annulus.
  • On the joints between the extraction nozzle and the outside of the Inner housing is the tapping socket with the inner housing sealing welded. This connection is made in an alternative embodiment Screw connection or jamming realized.

Claims (6)

  1. Turbine à vapeur (1), en particulier turbine à haute ou moyenne pression, comprenant un carter extérieur (6) et un carter intérieur (6) divisé en une partie inférieure et une partie supérieure le long d'un plan de séparation, lequel est maintenu assemblé au moyen de plusieurs frettes, et comprenant un arbre (2) et un canal d'aube (3) ainsi qu'une fente de prise de vapeur (8) qui s'étend depuis le canal d'aube (3) à travers le carter intérieur (6) et par lequel la vapeur soutirée parvient dans une chambre collectrice et de là s'écoule à travers une tubulure de prélèvement (24) hors de la turbine à vapeur (1),
    caractérisée en ce que
    le carter intérieur (6) présente, dans la région de la prise de vapeur, une frette (20) qui maintient assemblé le carter intérieur et qui présente au milieu de son côté intérieur, tourné vers le carter intérieur (6), un espace creux à moitié ouvert, et la frette (6) est plate sur son côté intérieur de part et d'autre de l'espace creux et s'adapte à ces endroits aux contours du carter intérieur (6), et la frette (20) est disposée de telle sorte sur le carter intérieur (6) que l'espace creux soit positionné au-dessus de la fente de prise de vapeur (8) et que la frette (20) forme à cet endroit conjointement avec le côté extérieur du carter intérieur (6), un espace annulaire (10) fermé et étanche, et que la vapeur soutirée, qui s'écoule du canal d'aube (3) à travers la fente de prise de vapeur (8), s'accumule dans l'espace annulaire (10) et parvienne de là dans une tubulure de prélèvement (24).
  2. Turbine à vapeur (1) selon la revendication 1,
    caractérisée en ce que
    l'espace creux au milieu de la frette (20) est réalisé avec une section transversale ronde ou angulaire.
  3. Turbine à vapeur (1) selon la revendication 1 ou 2,
    caractérisée en ce que
    le contour extérieur de la frette (20) au milieu de l'espace creux présente une courbure (23).
  4. Turbine à vapeur (1) selon la revendication 3,
    caractérisée en ce que
    la frette (20), pour empêcher des rotations et des déplacements axiaux sur le carter intérieur (6), est positionnée par une ou plusieurs vis de butée (25) sur le carter intérieur (6).
  5. Turbine à vapeur (1) selon la revendication 4,
    caractérisée en ce que
    la tubulure de prélèvement (24) est fixée de manière étanche sur la frette (20) par soudage, vissage ou serrage.
  6. Turbine à vapeur (1) selon la revendication 5,
    caractérisée en ce que
    la frette (20) est montée en une étape de montage sur le carter intérieur (6).
EP98810543A 1998-06-15 1998-06-15 Anneau de sertissage avec prise de vapeur pour turbine Expired - Lifetime EP0965732B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP98810543A EP0965732B1 (fr) 1998-06-15 1998-06-15 Anneau de sertissage avec prise de vapeur pour turbine
DE59808462T DE59808462D1 (de) 1998-06-15 1998-06-15 Schrumpfring für Turbine mit Anzapfung
CNB991080297A CN1246571C (zh) 1998-06-15 1999-06-08 用于抽汽式涡轮机的收缩环
US09/328,433 US6203271B1 (en) 1998-06-15 1999-06-09 Shrink ring for turbine with bleeding
JP11165616A JP2000054806A (ja) 1998-06-15 1999-06-11 タ―ビンのための抽出手段を有する収縮リング

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810543A EP0965732B1 (fr) 1998-06-15 1998-06-15 Anneau de sertissage avec prise de vapeur pour turbine

Publications (2)

Publication Number Publication Date
EP0965732A1 EP0965732A1 (fr) 1999-12-22
EP0965732B1 true EP0965732B1 (fr) 2003-05-21

Family

ID=8236134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810543A Expired - Lifetime EP0965732B1 (fr) 1998-06-15 1998-06-15 Anneau de sertissage avec prise de vapeur pour turbine

Country Status (5)

Country Link
US (1) US6203271B1 (fr)
EP (1) EP0965732B1 (fr)
JP (1) JP2000054806A (fr)
CN (1) CN1246571C (fr)
DE (1) DE59808462D1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6337861B1 (en) * 1999-02-02 2002-01-08 Cisco Technology, Inc. Method and apparatus to properly route ICMP messages in a tag-switching network
US7729267B2 (en) * 2003-11-26 2010-06-01 Cisco Technology, Inc. Method and apparatus for analyzing a media path in a packet switched network
DE102006005169A1 (de) 2005-02-16 2006-09-07 Alstom Technology Ltd. Dampfturbine
EP1744017A1 (fr) 2005-07-14 2007-01-17 Siemens Aktiengesellschaft Turbine combinée à vapeur et procédé de fonctionnement d'une turbine combinée à vapeur
US7738383B2 (en) * 2006-12-21 2010-06-15 Cisco Technology, Inc. Traceroute using address request messages
US7706278B2 (en) * 2007-01-24 2010-04-27 Cisco Technology, Inc. Triggering flow analysis at intermediary devices
EP2101042A1 (fr) * 2008-03-10 2009-09-16 Siemens Aktiengesellschaft Turbine à vapeur dotée de frettes
US20130078089A1 (en) * 2011-09-26 2013-03-28 General Electric Company Steam turbine single shell extraction lp casing
CN103422916B (zh) * 2013-08-30 2015-09-30 上海电气电站设备有限公司 汽轮机的抽、补汽通道结构
CN105626168B (zh) * 2016-02-26 2017-09-15 上海发电设备成套设计研究院 汽轮机红套环高压内缸的严密性监控方法及系统
CN105756724B (zh) * 2016-02-26 2017-09-22 上海发电设备成套设计研究院 汽轮机红套环与高压内缸红套紧力的监控方法及系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB600025A (en) * 1945-04-13 1948-03-30 Power Jets Res & Dev Ltd Improvements in and relating to casings for turbines, compressors and the like
US4032253A (en) * 1975-09-11 1977-06-28 Carrier Corporation Compensating ring for a rotary machine

Also Published As

Publication number Publication date
DE59808462D1 (de) 2003-06-26
CN1239178A (zh) 1999-12-22
US6203271B1 (en) 2001-03-20
EP0965732A1 (fr) 1999-12-22
JP2000054806A (ja) 2000-02-22
CN1246571C (zh) 2006-03-22

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