EP2096273A1 - Boîtier tubulaire pour une section d'un boîtier de turbomachine - Google Patents

Boîtier tubulaire pour une section d'un boîtier de turbomachine Download PDF

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Publication number
EP2096273A1
EP2096273A1 EP08003729A EP08003729A EP2096273A1 EP 2096273 A1 EP2096273 A1 EP 2096273A1 EP 08003729 A EP08003729 A EP 08003729A EP 08003729 A EP08003729 A EP 08003729A EP 2096273 A1 EP2096273 A1 EP 2096273A1
Authority
EP
European Patent Office
Prior art keywords
housing
screw
pipe shells
tubular
connection region
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Withdrawn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
EP08003729A
Other languages
German (de)
English (en)
Inventor
Oliver Dr. Schneider
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to EP08003729A priority Critical patent/EP2096273A1/fr
Publication of EP2096273A1 publication Critical patent/EP2096273A1/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Withdrawn legal-status Critical Current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
    • 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
    • F01D25/243—Flange connections; Bolting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/30—Retaining components in desired mutual position
    • F05B2260/301—Retaining bolts or nuts
    • 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
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking

Definitions

  • the invention relates to a tubular housing for a portion of a pressure housing, comprising two half-pipe shells which lie against each other in two connecting regions.
  • housing halves when provided for generating electrical energy turbomachinery, it is known to form the housing of two housing halves. Both housing halves are designed in the manner of a half-pipe, so that an upper half of the housing and a lower half of the housing are present. At the circumferential ends of each housing half extend in the radial direction of the annular housing seen in cross-section flanges. The directly opposite flanges of the housing halves form a joint, where the housing is divided. Because of the exactly half-way division of the housing, it is also possible to speak of a division plane in which the machine axis lies. The graduation plane is thereby spanned by the diameter of the housing and its axial direction.
  • a plurality of holes is provided, through which each extend individual expansion screws, which are screwed on both sides of the flanges.
  • the expansion screws press the abutting flanges in the parting plane closely together under great prestress, in order to maximally avoid a leakage flow from the internally guided, high-pressure medium to the outside, or, if at all, to permit it only to an extremely small extent.
  • the flanges heat only delayed from the inside to the outside, so that the arranged perpendicular to the flanges glands subject to a certain bending stress, which can lead to plastic deformation of the usually already stretched to the yield point Flanschverschraubungen. After a plastic deformation, the biasing force applied by the respective expansion screw for the abutting flanges is reduced, which consequently adversely affects the tightness of the dividing joint.
  • the invention has for its object to provide an existing two pipe halves tubular housing for a portion of a pressure housing, which is particularly reliable, durable and extremely tight while avoiding the disadvantages known from the prior art.
  • the invention is based on the finding that the use of a flange connection for connecting the two housing halves is disadvantageous and accordingly avoided should.
  • the invention proposes the overlapping of the two half-pipe shells in the tangential direction, the two half-pipe shells being screwed together in each overlapping region.
  • the screw is arranged transversely to the tangential direction. Due to the overlapping half-pipe shells, it is possible to provide a screw which extends at least partially through both half-pipe shells in each connection region. The accumulation of housing material can thus be substantially reduced in the region of the connection of the half-pipe shells, since the flanges are superfluous and can therefore be omitted.
  • the proposed arrangement leads to a partially tubular housing in which the dividing joint can be made substantially smaller, as compared to a flange.
  • the screw preload by which the two overlapping half-pipe shells are pressed together, much lower.
  • further utilization of the housing material may be possible, in particular with regard to its mechanical loads. If necessary, it is possible to dispense with more efficient materials or avoid their use.
  • the screw is arranged transversely to the tangential direction.
  • the screw axis Each screw extends radially or approximately radially to the housing geometry.
  • the two half-pipe shells for the offset-free transition of the inner surfaces and / or the outer surfaces of the half-pipe shells in the connection region - viewed in cross-section - tapers, compared with the wall thickness, which is immediately adjacent to the connection region.
  • the corresponding peripheral ends of the half-pipe shells are preferably designed to taper in a step-like manner.
  • each half-pipe shell - seen in cross-section - have a thinner wall thickness centrally between the two connection areas and a thicker wall thickness in front of the end connection areas, whereby the transition from the thin wall thickness to the thick wall thickness is stepless and thus comparatively homogeneous heating of the housing during operation of the Turbomachine can be achieved.
  • This also leads to homogenized strains of the housing, which can at least reduce the disadvantages known from the prior art, if not even avoid.
  • the overlapping of the two half-pipe shells in the circumferential direction results in a sealing region extending in the tangential direction, in which the two half-pipe shells abut one another, wherein the two half-pipe shells are pressed against one another in the sealing region by the screwing.
  • the improved homogeneity of the wall thickness distribution along the circumference also improves the transient behavior of the entire tubular housing, during which a heating of the housing or its cooling takes place.
  • the tubular housing is formed for a portion of a pressure housing, and it is preferably used in a gas turbine, it is possible that the housing increases in diameter or changed along the axial direction of its tubular extension.
  • the tubular housing may also be formed as a guide vane carrier of a gas turbine, as a pressure jacket for a compressor or a gas turbine, which comprises an axial portion which is formed according to the invention or advantageously developed further.
  • the single figure shows a cross section through a tubular housing.
  • the single figure shows a cross section through a tubular housing 10, which represents an axial portion of a pressure housing.
  • the pressure housing for example, be the pressure jacket of a compressor or a gas turbine, which is used stationarily for energy production.
  • the pressure housing can also be formed as a guide vane carrier of a corresponding gas turbine, wherein the housing increases in diameter along the perpendicular to the plane extending axial direction in diameter, provided that the total tubular guide vane carrier is used in the turbine-side portion of the gas turbine, for example.
  • the tubular housing 10 is divided in half along its axial extent and comprises two substantially identical shell elements, each of which is semi-tubular.
  • the shell elements are referred to below as half-pipe shells 12, 13.
  • the two half-pipe shells 12, 13 lie against each other at two connecting regions 14, wherein the connecting regions 14 themselves - viewed in cross-section - face each other.
  • the two half-pipe shells 12, 13 overlap.
  • the lower half-pipe shell 13 points to this in the connecting region 14 shown on the right - an inner projection 16 on the housing 16 and an outer projection 18 in the connection region 14 shown on the left, which each extend so far in the circumferential direction that the lower half-pipe shell 13 including the projections 16, 18, viewed in the circumferential direction, describes a circular arc of greater than 180 °.
  • the upper half-pipe shell 12 is formed. It has on the connection side on the one hand also an inner projection 16 and on the other hand an outer projection 18, wherein the inner projection 16 in the illustration according to FIG. 1 is arranged in the left connection region 14 and the outer Projection 18 in the right connection region 14.
  • Inner projection 16 and outer projection 18 per connection region 14 are in pairs overlapping in a sealing region 22 to each other.
  • the sealing surface of the sealing region 22 extends tangentially and along the axial direction 11 as a part of the dividing joint.
  • two screw connections 24 are provided which brace the two projections 16, 18 of each pair Screws 24 are circumferentially spaced from each other.
  • Each screw 24 comprises a trained as a dowel screw 26, which are screwed into a arranged on the inner projection 16, not further shown thread.
  • a threaded aligned, not shown bore provided, in which the screw 26 is inserted appropriately.
  • the screw 26 may be formed with a screw head.
  • the projections 16, 18 can be pressed against each other with a high force, which increases the tightness of each of them enclosed gap.
  • the screw 26 is designed as a screw bolt, on the outer end of a nut is screwed for clamping.
  • each half-pipe shell 12, 13 along the circumference can be constant in the middle section between the two connection regions 14 and continuously increase towards the connection regions 14. Shortly before the connection region 14, the wall thickness of each half-pipe shell 12, 13 is then so great that despite the steps necessary to form the projections 16, 18, a wall thickness of the projections 16, 18 remains, which is necessary for safe operation of the pressure housing 10.
  • the size of the wall thickness tapering gradation can be chosen so that both the inner surfaces and the outer surfaces of the two half-pipe shells 12, 13 pass without offset in the circumferential direction into each other.
  • the stepped taper of the wall thickness in the connection region 14 could also be a continuous Rejuvenation or even a combination of it be possible.
  • tubular housing 10 for example as a gas turbine housing
  • pressures in the order of 20 ⁇ 10 5 Pa to 30 ⁇ 10 5 Pa (20 bar to 30 bar) or even higher may occur inside the tubular housing 10, whereas the pressure outside the housing 10 corresponds to the normal atmospheric pressure. Due to the pressure gradient between inside and outside, the two half-pipe shells 12, 13 strive apart. In addition, the guided inside the medium by the gap formed between the overlapping projections 16, 18 fugue to the outside, whereby a total of each screw 24 and the seated therein screw 26 is subjected to shear.
  • the invention proposes a tubular housing 10 for a section of a pressure housing of a gas turbine, steam turbine or compressor in which the solution to the underlying problem is that the sealing of the gap between the two half-pipe shells 12, 13 achieved by a screw 24 which is claimed on shear.
  • the two half-pipe shells 12, 13 can lie against each other in a form-fitting manner in each of the connecting regions 14.
  • the screw 24 is preferably aligned radially to the housing geometry. Viewed in cross-section, the wall thickness of each half pipe shell along the circumference is much more uniform, compared to housing halves provided with flanges.
  • a construction can be selected, which allows, if the tubular housing is designed as a guide blade carrier to rotate it in a pressure jacket with built-in rotor.
  • the existing between the projections 16 and 18 joint can be made substantially smaller and the bias for pressing together of the joint forming overlapping areas are chosen to be smaller. This reduces the total cost of materials alone due to the lower mass, which is achieved by eliminating the otherwise required flanges. Also can be possible by the better power distribution and further exploitation of the material, which also reduces costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP08003729A 2008-02-28 2008-02-28 Boîtier tubulaire pour une section d'un boîtier de turbomachine Withdrawn EP2096273A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08003729A EP2096273A1 (fr) 2008-02-28 2008-02-28 Boîtier tubulaire pour une section d'un boîtier de turbomachine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08003729A EP2096273A1 (fr) 2008-02-28 2008-02-28 Boîtier tubulaire pour une section d'un boîtier de turbomachine

Publications (1)

Publication Number Publication Date
EP2096273A1 true EP2096273A1 (fr) 2009-09-02

Family

ID=40251694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08003729A Withdrawn EP2096273A1 (fr) 2008-02-28 2008-02-28 Boîtier tubulaire pour une section d'un boîtier de turbomachine

Country Status (1)

Country Link
EP (1) EP2096273A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2463484A1 (fr) * 2010-12-13 2012-06-13 Siemens Aktiengesellschaft Boîtier tubulaire pour turbomachine
CN103233697A (zh) * 2013-04-26 2013-08-07 中国石油天然气股份有限公司 油井井口防喷装置
EP2405105A3 (fr) * 2010-07-08 2014-04-23 General Electric Company Carter de turbine à vapeur
WO2017182106A1 (fr) * 2016-04-18 2017-10-26 Man Diesel & Turbo Se Carter de turbomachine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023051B (de) * 1954-04-07 1958-01-23 Kuehnle Kopp Kausch Ag Mehrstufige Gleichdruckturbine axialer Bauart (Kammerturbine)
SU364750A1 (ru) * 1971-03-01 1972-12-28 Диафрагма цилиндра турбомашины
JPS52119704A (en) * 1976-03-31 1977-10-07 Hitachi Ltd Flange structure of casing
EP1378706A1 (fr) * 2002-07-01 2004-01-07 ALSTOM (Switzerland) Ltd Raccord à brides indétachable et procédé pour sa montage
EP1707759A2 (fr) * 2005-03-31 2006-10-04 ALSTOM Technology Ltd Carter d'une turbomachine
DE102006038021A1 (de) * 2005-08-24 2007-03-01 Alstom Technology Ltd. Innengehäuse einer rotierenden thermischen Maschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023051B (de) * 1954-04-07 1958-01-23 Kuehnle Kopp Kausch Ag Mehrstufige Gleichdruckturbine axialer Bauart (Kammerturbine)
SU364750A1 (ru) * 1971-03-01 1972-12-28 Диафрагма цилиндра турбомашины
JPS52119704A (en) * 1976-03-31 1977-10-07 Hitachi Ltd Flange structure of casing
EP1378706A1 (fr) * 2002-07-01 2004-01-07 ALSTOM (Switzerland) Ltd Raccord à brides indétachable et procédé pour sa montage
EP1707759A2 (fr) * 2005-03-31 2006-10-04 ALSTOM Technology Ltd Carter d'une turbomachine
DE102006038021A1 (de) * 2005-08-24 2007-03-01 Alstom Technology Ltd. Innengehäuse einer rotierenden thermischen Maschine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2405105A3 (fr) * 2010-07-08 2014-04-23 General Electric Company Carter de turbine à vapeur
EP2463484A1 (fr) * 2010-12-13 2012-06-13 Siemens Aktiengesellschaft Boîtier tubulaire pour turbomachine
WO2012079830A1 (fr) * 2010-12-13 2012-06-21 Siemens Aktiengesellschaft Carter tubulaire pour une turbomachine
CN103261588A (zh) * 2010-12-13 2013-08-21 西门子公司 用于涡轮机的管形的壳体
US20130294907A1 (en) * 2010-12-13 2013-11-07 Ralf Hoffacker Tubular housing for a turbomachine
JP2014506309A (ja) * 2010-12-13 2014-03-13 シーメンス アクティエンゲゼルシャフト ターボ機械のための管状筐体
CN103261588B (zh) * 2010-12-13 2015-06-03 西门子公司 用于涡轮机的管形的壳体
CN103233697A (zh) * 2013-04-26 2013-08-07 中国石油天然气股份有限公司 油井井口防喷装置
CN103233697B (zh) * 2013-04-26 2015-08-05 中国石油天然气股份有限公司 油井井口防喷装置
WO2017182106A1 (fr) * 2016-04-18 2017-10-26 Man Diesel & Turbo Se Carter de turbomachine
CN109154207A (zh) * 2016-04-18 2019-01-04 曼能源解决方案欧洲股份公司 涡轮机壳体
JP2019513944A (ja) * 2016-04-18 2019-05-30 マン・エナジー・ソリューションズ・エスイー ターボ機械ハウジング

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