EP0979347B1 - Vorrichtung zur wärmeisolierung für eine dampfturbine - Google Patents
Vorrichtung zur wärmeisolierung für eine dampfturbine Download PDFInfo
- Publication number
- EP0979347B1 EP0979347B1 EP98931958A EP98931958A EP0979347B1 EP 0979347 B1 EP0979347 B1 EP 0979347B1 EP 98931958 A EP98931958 A EP 98931958A EP 98931958 A EP98931958 A EP 98931958A EP 0979347 B1 EP0979347 B1 EP 0979347B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shim element
- insert element
- steam turbine
- bearing
- casing
- 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
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
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
- F01D25/145—Thermally insulated casings
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/231—Preventing heat transfer
Definitions
- the invention relates to a device for thermal insulation between housing parts of a steam turbine, in particular between an inner case and an outer case a steam turbine with spiral inflow.
- An inlet casing of a steam turbine with spiral inflow is e.g. known from DE 36 17 537 A1.
- Inner housing in the outer housing usually large forces of e.g. about 1000 to 2000 kN and large temperature differences between the outer and inner housing. So arises due to a high pressure of e.g. B. 60 bar of in the steam turbine incoming steam a large torque on the respective Support or claw.
- the resulting force on the each support can be about 150 tons at this vapor pressure be.
- Swiss patents 665450 and 666 937 respectively a steam turbine with a spiral inflow specified.
- a steam turbine with a spiral inflow specified.
- unspecified components between the outer housing and an inner housing.
- a gas turbine with one Inner housing and an outer housing.
- a base plate is provided, which is attached to the outer case with screws is.
- the base plate has a centering device Alignment of the inner housing with respect to the outer housing.
- the invention has for its object a particularly suitable Device for heat insulation between housing parts specify a steam turbine, especially for the inflow housing a steam turbine with spiral inflow.
- the insert element is used for power transmission between the Housing parts of the steam turbine, at least in the event that steam is applied to the steam turbine.
- the insert element consists of a material which is opposite to the respective material of the housing parts at one opposite Room temperature increased temperature higher strength having. This is particularly the case with steam turbines that are high Pressures and temperatures above 500 °, especially above 550 to 650 ° C, are of particular importance.
- the invention is based on the consideration that within one also for aligning housing parts to each other serving insert element on the one hand a material reduction up to the value of the permissible compressive stress or surface tension is possible because the permissible compressive stress is within of the insert element is several times higher than that permissible surface pressure from the insert element to the housing part.
- a targeted reduction in material one in terms of dimensions and material a correspondingly designed supplement element the amount of heat flowing through the insert element, since this due to the remaining cross-section within the insert element is determined. This creates a kind of insulation, with no new types for the housing parts of the steam turbine Materials must be used. At a high Temperature of z. B.
- the insert element preferably has to reduce the Cross-section between the two contact surfaces reducing the cross-section Openings and / or cavities.
- Such Cross-sectional openings can subsequently, for example by drilling, milling, laser beam treatment and other suitable methods introduced into the insert element become.
- the insert element can be in one piece or be made in several pieces. In a multi-piece version can through said openings or cavities Wells, slots, troughs or the like in one another parts of the insert element to be connected his.
- this expediently cuboidal insert element a number of side by side arranged through holes.
- the run Through holes advantageously parallel to the opposite bearing surfaces of the insert element and preferably transverse to its longitudinal direction.
- the through holes can be flowed through to cool the insert element, z. B. by means of an additional cooling medium or alone by convection. This is guaranteed even if the Through holes in the longitudinal direction of the insert element run. This is e.g. then appropriate if due to the Position or installation position of the insert element of the insert element in the longitudinal direction desired or required is.
- The, especially drilled, insert element is particularly suitable for use in a spiral casing with two opposite arranged torque arms, which are expedient from mutually opposite claws of an outer housing and an inner housing are formed.
- the support brackets are on the inside of the outer housing or on molded onto the outside of the inner housing.
- the Insert element can advantageously also as a key or Supplement used to align the housing parts with each other become.
- the inflow housing 1 according to FIG 1 with a steam turbine 2 Spiral inflow has two turbine blade assemblies flow channels 3a and 3b encompassing about half each on, each having an inlet 4 and 5.
- the inflow housing 1 is made of a flow channel 3a, 3b Inner housing 6 and one concentrically surrounding this Outer housing 7 constructed.
- the inner housing 6 and the outer housing 7 are each made of an upper housing part 6a, 7a and a lower housing part 6b, 7b assembled along the same parting line 8 by means of flange connections 9 and 10 are screwed together.
- the inner housing 6 is opposite the outer housing 7 across two to the parting line 8th opposite and provided with insert elements 11 torque arms 12 supported.
- FIG. 2 shows such a torque arm 12 with the inner housing 6 on the outside and on the inside of the outer housing 7 molded claw 13 or 14.
- the claws 13, 14 form a support for the inner housing 6 opposite the fixed outer housing 7, so that during operation the steam turbine 2 acting on the inner housing 6 Torque via the outer housing 7 in a (not shown) Turbine fixation is initiated.
- a support area 15 provided, in which that shown in FIG Insert element 11 is arranged.
- the insert element 11 is preferably a cuboid body heat-resistant steel, e.g. made of high-alloy chrome-molybdenum-vanadium the alloy X22CrMoV121.
- the width B is about 50 mm and the height H is about 100 mm.
- the insert element 11 has two opposing contact surfaces 16,17, which when used in the support area 15 the corresponding contact surfaces of the claws 13 or 14 concerns.
- the insert element 11 further has two opposite End faces 18,19, of which the end face 18 in FIG 2 is visible.
- the insert element 11 has also also opposite longitudinal surfaces, of which only the upper longitudinal surface 20 is visible in FIG.
- the insert element 1 has six through holes 21 as Bore openings that are parallel to in the exemplary embodiment the bearing surfaces 16, 17 and transversely to the longitudinal direction, i.e. the Passing through flow surfaces 20.
- the through holes 21 can be arranged in the intermediate space 22 between the inner housing 6 and the outer housing 7 shows a flow running along the flow line 23 adjust (FIG 2).
- the through holes 21 also run parallel to the longitudinal surface 20 and thereby push through the end faces 18, 19.
- the web width d1 between adjacent through bores 21 is approximately 10 mm, while the web width d2 in the edge region is in each case approximately 5 mm.
- the dimensions L, W, H for an insert element 11 made of chrome-molybdenum-vanadium with the alloy X22CrMoV121 are dimensioned for a permissible surface pressure of 65 N / mm 2 .
- a compressive stress of 300 to 400 N / mm 2 is then permissible within the material body, ie within the insert element 11.
- the number of through bores 21 and their bore diameter d3 and the web widths d1, d2 are therefore dimensioned such that the remaining cross section in the intermediate webs 24 between the through bores 21 and in the two edge webs 25 is used up to the permissible compressive stress.
- the insert element 11 also serves for alignment the inner housing 6 relative to the outer housing 7, in particular to compensate for a result of manufacturing tolerances occurring game in the support area 15 between the two claws 13 and 14.
- FIG. 4 is a perspective view two sub-elements 31 and 32 composite insert element 11 shown.
- the insert element 11 corresponds after assembly of the two sub-elements 31 and 32 of his Design from the insert element already described in Figure 3 11.
- the sub-elements 31 and 32 each have groove-shaped depressions with a semicircular Cross-section so that when assembling of the sub-elements 31 and 32 channels with a circular cross-section and a diameter D3 analogous to the through holes 21 are formed. It is also possible in any Sub-element 31 and 32 additionally or alternatively hemispherical or introduce similar depressions through which when assembling the sub-elements 31 and 32 cavities, for example in spherical form.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
- FIG 1
- im Querschnitt ein Einströmgehäuse einer Dampfturbine in Spiralbauweise mit zwei mit Beilageelementen versehenen Drehmomentstützen,
- FIG 2
- ein Ausschnitt II aus FIG 1 in vergrößertem Maßstab mit einem zwischen zwei Tragpratzen angeordneten Beilageelement,
- FIG 3
- in perspektivischer Darstellung ein gebohrtes Beilageelement, und
- FIG 4
- in perspektivischer Darstellung ein zusammengesetztes Beilageelement
Claims (9)
- Vorrichtung zur Wärmeisolierung zwischen Gehäuseteilen (6,7) einer Dampfturbine (2),
mit einem in einen Auflagebereich (15) sich gegenüberstehender Stützauflagen (13,14) der Gehäuseteile (6,7) einlegbaren Beilageelement (11), wobei das Beilageelement (11) jeweils eine einer Stützauflage (13,14) zugewandte Auflagefläche (16,17) aufweist und zwischen den Auflagenflächen (16,17) in seinem Querschnitt reduziert ist, dadurch gekennzeichnet, daß das Beilageelement (11) aus einem Material besteht, welches gegenüber dem jeweiligen Material der Gehäuseteilen (6,7) bei einer gegenüber Raumtemperatur erhöhten Temperatur eine höhere Festigkeit aufweist, sowie der Kraftübertragung zwischen den Gehäuseteilen (6,7) bei Dampfbeaufschlagung der Dampfturbine (2) dient. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß das Beilageelement (11) eine Anzahl von querschnittsverringernden Öffnungen (21) und/oder Hohlräumen aufweist. - Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, daß das Beilageelement (11) Bohrungsöffnungen (21) aufweist. - Vorrichtung nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß das Beilageelement (11) eine Anzahl von parallel zu dessen Auflagefläche (16,17) angeordnete Durchgangsbohrungen (21) aufweist. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß das Beilageelement (11) aus warmfestem Stahl, z. B. der Legierung X22CrMoV121, besteht. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß das Beilageelement (11) in einem Spiralgehäuse (1) zwischen sich gegenüberstehenden Tragpratzen (13,14) eines Außengehäuses (7) und eines Innengehäuses (6) angeordnet ist. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Stützauflage eine an das jeweilige Gehäuseteil (6,7) angeformte Tragpratze (13,14) ist. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der, insbesondere in einer Anzahl von Stegen (24,25) zwischen den Bohrungsöffnungen (21) verbleibende Restquerschnitt, für die Aufnahme der zulässigen Druckspannung des Beilageelements (11) ausgelegt ist. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der, insbesondere in einer Anzahl von Stegen (24,25) zwischen den Bohrungsöffnungen (21) verbleibende Restquerschnitt, für die Aufnahme der zulässigen Druckspannung des Beilageelements (11) ausgelegt ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19717962 | 1997-04-28 | ||
DE19717962 | 1997-04-28 | ||
PCT/DE1998/001104 WO1998049427A1 (de) | 1997-04-28 | 1998-04-21 | Vorrichtung zur wärmeisolierung für eine dampfturbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0979347A1 EP0979347A1 (de) | 2000-02-16 |
EP0979347B1 true EP0979347B1 (de) | 2002-06-26 |
Family
ID=7828022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98931958A Expired - Lifetime EP0979347B1 (de) | 1997-04-28 | 1998-04-21 | Vorrichtung zur wärmeisolierung für eine dampfturbine |
Country Status (9)
Country | Link |
---|---|
US (1) | US6171053B1 (de) |
EP (1) | EP0979347B1 (de) |
JP (1) | JP4046774B2 (de) |
KR (1) | KR20010012125A (de) |
CN (1) | CN1268834C (de) |
AT (1) | ATE219817T1 (de) |
DE (1) | DE59804590D1 (de) |
PL (1) | PL336486A1 (de) |
WO (1) | WO1998049427A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050120719A1 (en) * | 2003-12-08 | 2005-06-09 | Olsen Andrew J. | Internally insulated turbine assembly |
JP2009167971A (ja) * | 2008-01-18 | 2009-07-30 | Ihi Corp | ハウジング締結方法及び過給機 |
EP2218882A1 (de) * | 2009-02-16 | 2010-08-18 | Siemens Aktiengesellschaft | Leitschaufelträgersystem |
ITMI20091872A1 (it) * | 2009-10-28 | 2011-04-29 | Alstom Technology Ltd | "sistema di involucri per una turbina a vapore" |
CN104081487B (zh) | 2012-03-27 | 2018-01-02 | 住友精化株式会社 | 电容器用电解液、双电层电容器和锂离子电容器 |
EP2644844A1 (de) * | 2012-03-30 | 2013-10-02 | Alstom Technology Ltd | Gasturbine mit Innengehäuse und Aussengehäuse und Verfahren zum Demontieren der Gehäuse |
US9359913B2 (en) | 2013-02-27 | 2016-06-07 | General Electric Company | Steam turbine inner shell assembly with common grooves |
JP2022127756A (ja) | 2021-02-22 | 2022-09-01 | 三菱重工コンプレッサ株式会社 | 蒸気タービン |
CN114060109B (zh) * | 2021-11-23 | 2023-12-08 | 闫小龙 | 一种汽轮机进汽节能导流装置 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE515804A (de) * | 1951-11-30 | |||
DE927782C (de) * | 1952-01-12 | 1955-05-16 | Licentia Gmbh | Teilfugendichtung fuer Hoechstdruckdampf- oder Gasturbinen u. dgl. |
DE1055549B (de) | 1957-12-13 | 1959-04-23 | Siemens Ag | Doppelgehaeuseturbine |
FR1271571A (de) * | 1959-07-30 | 1962-01-19 | ||
US3313517A (en) * | 1965-04-01 | 1967-04-11 | Worthington Corp | Gas expander turbines for power recovery use with jet type, hot gas generators |
CH485951A (de) * | 1968-08-09 | 1970-02-15 | Bbc Brown Boveri & Cie | Einrichtung zur Verbindung zwischen einem wärmeren und einem kälteren Gehäuseteil |
GB1310110A (en) * | 1969-06-19 | 1973-03-14 | Newmark Ltd Louis | Mounting blocks for fluid control valves |
US3654960A (en) * | 1969-12-31 | 1972-04-11 | Hydro Stack Mfg Corp | Modular hydraulic system |
CH552130A (de) * | 1972-11-28 | 1974-07-31 | Bbc Brown Boveri & Cie | Turbinengehaeuse. |
US4183373A (en) * | 1978-04-24 | 1980-01-15 | Kay Francis X | Fluid pressure-operated systems |
US4382452A (en) * | 1981-04-27 | 1983-05-10 | Humphrey Products Company | Exhaust flow control valve for manifold plate |
GB2118629B (en) * | 1982-04-21 | 1985-07-17 | Rolls Royce | Device for passing a fluid flow eg. cooling air through a barrier eg. bolted joint |
CH665450A5 (de) * | 1983-06-09 | 1988-05-13 | Bbc Brown Boveri & Cie | Ventil fuer horizontale dampfzufuehrung an zweigehaeuseturbinen. |
CH666937A5 (de) | 1985-01-31 | 1988-08-31 | Bbc Brown Boveri & Cie | Hochdruckdampfturbine. |
DE3617537A1 (de) | 1986-05-24 | 1987-11-26 | Bbc Brown Boveri & Cie | Einstroemgehaeuse fuer eine stroemungsmaschine |
US5063661A (en) * | 1990-07-05 | 1991-11-12 | The United States Of America As Represented By The Secretary Of The Air Force | Method of fabricating a split compressor case |
US5333995A (en) * | 1993-08-09 | 1994-08-02 | General Electric Company | Wear shim for a turbine engine |
US5509782A (en) * | 1995-03-02 | 1996-04-23 | Dresser-Rand Company | Bearing case support |
US5760593A (en) * | 1996-02-14 | 1998-06-02 | Bicc Public Limited Company | Gap measurement device |
-
1998
- 1998-04-21 EP EP98931958A patent/EP0979347B1/de not_active Expired - Lifetime
- 1998-04-21 CN CNB988043319A patent/CN1268834C/zh not_active Expired - Fee Related
- 1998-04-21 PL PL98336486A patent/PL336486A1/xx unknown
- 1998-04-21 KR KR19997009939A patent/KR20010012125A/ko not_active Application Discontinuation
- 1998-04-21 DE DE59804590T patent/DE59804590D1/de not_active Expired - Lifetime
- 1998-04-21 WO PCT/DE1998/001104 patent/WO1998049427A1/de not_active Application Discontinuation
- 1998-04-21 AT AT98931958T patent/ATE219817T1/de not_active IP Right Cessation
- 1998-04-21 JP JP54648498A patent/JP4046774B2/ja not_active Expired - Fee Related
-
1999
- 1999-10-28 US US09/428,579 patent/US6171053B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59804590D1 (de) | 2002-08-01 |
WO1998049427A1 (de) | 1998-11-05 |
CN1252853A (zh) | 2000-05-10 |
PL336486A1 (en) | 2000-06-19 |
US6171053B1 (en) | 2001-01-09 |
KR20010012125A (ko) | 2001-02-15 |
CN1268834C (zh) | 2006-08-09 |
JP4046774B2 (ja) | 2008-02-13 |
ATE219817T1 (de) | 2002-07-15 |
JP2001522428A (ja) | 2001-11-13 |
EP0979347A1 (de) | 2000-02-16 |
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