EP0965732B1 - Schrumpfring für Turbine mit Anzapfung - Google Patents
Schrumpfring für Turbine mit Anzapfung Download PDFInfo
- 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
Links
- 238000000605 extraction Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000010079 rubber tapping Methods 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 1
Images
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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
- 1
- Dampfturbine
- 2
- Welle
- 3
- Schaufelkanal
- 4
- Laufschaufel
- 5
- Leitschaufel
- 6
- Innengehäuse
- 7
- Aussengehäuse
- 8
- Anzapfschlitz
- 9
- Rippe
- 10
- Ringraum
- 11
- Gegossener Vollring
- 12
- Halteringe
- 13
- Federbolzen
- 14
- Schrumpfringe
- 20
- kombinierter Schrumpfring-Anzapfring
- 21
- Seite des kombinierten Schrumpfring-Anzapfring
- 22
- Öffnung
- 23
- Wölbung
- 24
- Entnahmestutzen
- 25
- Anschlagschraube
Claims (6)
- Dampfturbine (1), insbesondere Hoch- oder Mitteldruckturbine, mit einem Aussengehäuse (6) und einem entlang einer Trennebene in ein Unter- und Oberteil geteilten Innengehäuse (6), das mittels mehrerer Schrumpfringe zusammengehalten wird, und mit einer Welle (2) und einem Schaufelkanal (3) sowie einem Anzapfschlitz (8), der vom Schaufelkanal (3) durch das Innengehäuse (6) hindurchführt und durch den Anzapfdampf in einen Sammelraum gelangt und von dort durch einen Entnahmestutzen (24) aus der Dampfturbine (1) strömt,
dadurch gekennzeichnet, dass
das Innengehäuse (6) im Bereich der Anzapfung einen Schrumpfring (20) aufweist, der das Innengehäuse zusammenhält und in der Mitte seiner inneren, dem Innengehäuse (6) zugewandten Seite einen halboffenen Hohlraum aufweist, und der Schrumpfring (20) beidseits des Hohlraums an seiner inneren Seite flach ausgebildet ist und dort den Konturen des Innengehäuses (6) angepasst ist, und der Schrumpfring (20) auf dem Innengehäuse (6) so angeordnet ist, dass der Hohlraum über dem Anzapfschlitz (8) positioniert ist und dort der Schrumpfring (20) zusammen mit der Aussenseite des Innengehäuses (6) einen geschlossenen und dichten Ringraum (10) bildet, und Anzapfdampf, der vom Schaufelkanal (3) durch den Anzapfschlitz (8) strömt, sich in dem Ringraum (10) sammelt und von dort in einen Entnahmestutzen (24) gelangt. - Dampfturbine (1) nach Anspruch 1
dadurch gekennzeichnet, dass
der Hohlraum in der Mitte des Schrumpfrings (20) in seinem Querschnitt rund oder eckig ausgebildet ist. - Dampfturbine (1) nach Anspruch 1 oder 2
dadurch gekennzeichnet, dass
die Aussenkontur des Schrumpfrings (20) in der Mitte über dem Hohlraum eine Wölbung (23) aufweist. - Dampfturbine (1) nach Anspruch 3
dadurch gekennzeichnet, dass
der Schrumpfring (20) vor Verdrehungen und axialen Verschiebungen auf dem Innengehäuse (6) durch eine oder mehrere Anschlagschrauben (25) am Innengehäuse (6) positioniert ist. - Dampfturbine(1) nach Anspruch 4
dadurch gekennzeichnet, dass
der Entnahmestutzen (24) an dem Schrumpfring (20) durch Verschweissung, Verschraubung oder Verklemmung dichtend befestigt ist. - Dampfturbine (1) nach Anspruch 5
dadurch gekennzeichnet, dass
der Schrumpfring (20) in einem Montagegang auf dem Innengehäuse (6) montiert wird.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59808462T DE59808462D1 (de) | 1998-06-15 | 1998-06-15 | Schrumpfring für Turbine mit Anzapfung |
EP98810543A EP0965732B1 (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 (de) | 1998-06-15 | 1998-06-15 | Schrumpfring für Turbine mit Anzapfung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0965732A1 EP0965732A1 (de) | 1999-12-22 |
EP0965732B1 true EP0965732B1 (de) | 2003-05-21 |
Family
ID=8236134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98810543A Expired - Lifetime EP0965732B1 (de) | 1998-06-15 | 1998-06-15 | Schrumpfring für Turbine mit Anzapfung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6203271B1 (de) |
EP (1) | EP0965732B1 (de) |
JP (1) | JP2000054806A (de) |
CN (1) | CN1246571C (de) |
DE (1) | DE59808462D1 (de) |
Families Citing this family (11)
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 (de) * | 2005-07-14 | 2007-01-17 | Siemens Aktiengesellschaft | Kombinierte Dampfturbine, Dampf- oder Gas- und Dampf- Turbinenanlage, Verfahren zum Betrieb einer kombinierten Dampfturbine |
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 (de) * | 2008-03-10 | 2009-09-16 | Siemens Aktiengesellschaft | Dampfturbine mit Schrumpfringen |
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)
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 |
-
1998
- 1998-06-15 EP EP98810543A patent/EP0965732B1/de not_active Expired - Lifetime
- 1998-06-15 DE DE59808462T patent/DE59808462D1/de not_active Expired - Fee Related
-
1999
- 1999-06-08 CN CNB991080297A patent/CN1246571C/zh not_active Expired - Fee Related
- 1999-06-09 US US09/328,433 patent/US6203271B1/en not_active Expired - Fee Related
- 1999-06-11 JP JP11165616A patent/JP2000054806A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2000054806A (ja) | 2000-02-22 |
CN1239178A (zh) | 1999-12-22 |
DE59808462D1 (de) | 2003-06-26 |
CN1246571C (zh) | 2006-03-22 |
EP0965732A1 (de) | 1999-12-22 |
US6203271B1 (en) | 2001-03-20 |
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