EP0893578B1 - Dispositif étanche pour le raccordement entre la gaine d'arrivée de vapeur et le corps interne de l'ensemble basse-pression d'une turbine à vapeur - Google Patents
Dispositif étanche pour le raccordement entre la gaine d'arrivée de vapeur et le corps interne de l'ensemble basse-pression d'une turbine à vapeur Download PDFInfo
- Publication number
- EP0893578B1 EP0893578B1 EP19980401770 EP98401770A EP0893578B1 EP 0893578 B1 EP0893578 B1 EP 0893578B1 EP 19980401770 EP19980401770 EP 19980401770 EP 98401770 A EP98401770 A EP 98401770A EP 0893578 B1 EP0893578 B1 EP 0893578B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- low
- tubular element
- pressure
- trunking
- deformable
- 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
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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
- F01D9/00—Stators
- F01D9/06—Fluid supply conduits to nozzles or the like
-
- 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
- F01D13/00—Combinations of two or more machines or engines
- F01D13/02—Working-fluid interconnection of machines or engines
-
- 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 present invention relates to the field of steam turbines, and more specifically the connection between the steam inlet duct and the lower body pressure of a steam turbine.
- a piping connects the medium pressure part to the low pressure part. This piping opens into the arrival of vapor from the internal body.
- connection is usually made by a compensator which cannot be reached for disassembly only from inside the low-pressure part as in the documents FR 1 440 338. This requires dismantling of several elements of this set, and results in a heavy intervention immobilizing the turbine for a important time.
- the object of the present invention is to remedy this drawback by proposing a device 35 for easily removable connection from outside the turbine, and lower manufacturing cost.
- the invention relates in its most general acceptance a device of the type consisting of a module suitable for mounting on the low-pressure outer casing, and incorporating a compensator capable of absorbing displacements of the end of the arrival sheath, characterized in that the connection between the sheath and the low pressure outer box is made by via a deformable tubular element of which the upper end is secured to the box exhaust and whose lower end is integral with a connecting flange of the inlet sheath of steam with the low-pressure body.
- the tubular element deformable consists of a wavy shaped sleeve bellows.
- the exhaust box has an annular crown with an internal diameter significantly greater than outside diameter of the steam inlet duct, said crown having bores allowing the attachment of a complementary crown tubular elements deformable by means of of bolts accessible from the outside of the enclosure the low-pressure stage.
- the tubular element deformable is fixed to its lower part on the flange surrounding the low pressure body via an inner ring connected to said flange by bolts accessible from the outside of the casing low pressure module.
- the outer surface of the steam inlet duct and the inner surface of the deformable cylindrical element defines a space annular at the bottom of which is located the crown lower fixing of the tubular element on the low pressure body.
- the device has an annular protection plate closing off the space between the crown complementary attached to the upper end of the deformable element, and the wall of the inlet sheath steam.
- the deformable tubular element is extended by a length adjustment ferrule.
- the deformable tubular element is protected by a rigid outer tubular plate with a length greater than the length of the tubular member deformable.
- FIG. 1 shows a sectional view cross-section of a low-pressure module.
- This module is consisting of an upper outer casing (1) and by a lower outer casing (2).
- the envelope external is made of welded sheets. She is internally stiffened by ribs (3) and is braced by round irons (4) arranged in mesh.
- the lower part of this envelope (2) is supported on the block (5) by a sole (6) reinforced by gussets. This conception of external structure provides good load distribution on the massif.
- the internal body (7) made of welded construction rests on the lower part of the casing at the level of the side flanges (8) of its horizontal joint.
- the admission area is limited by an annular chamber (9).
- the steam supply passes through the envelope (1) at a hole whose cross section is significantly greater than the outer section of the arrival.
- the difference in section allows a game sufficient lateral to absorb various displacements resulting from the forces transmitted by the pipes of steam (10) due to expansion phenomena.
- This inlet is connected to the section intake (13) of the internal body by a flange exterior (14).
- This sleeve (15) surrounds the lower end (16) of the sheath (10).
- the upper part (17) of the sleeve (15) is welded to an outer ring (18) of annular shape and having an internal section corresponding to the outer section of the part upper (17) of the sleeve (15).
- This outer crown (18) is bolted to a welded complementary crown (20) on the outer casing (1).
- a seal (21) is interposed between the two crowns (18, 20).
- the lower end (23) of the sleeve (15) is extended by a tubular ferrule (24).
- This ferrule allows the length of the device to be adjusted to moment of assembling the turbine, and catching up misalignment by cutting this ferrule ring at ad-hoc height.
- This ferrule is welded to an annular plate (26) ensuring the connection with a inner crown (27) whose outer diameter is at most equal to the inside diameter of the ferrule and the sleeve (15), and whose internal diameter is at most equal to the outside diameter of the steam supply.
- This crown (27) forms a spacer coming position between the two parts (28, 29) of the flange connecting the sheath (10) on the body (13). of the seals (30, 31) seal between the crown (27) and the two parts (28, 29) of the flange. of the bolts (32) secure the assembly.
- the sleeve (15) is protected by two tubular plates (34, 35) surrounding the surface outer and inner surface of the sleeve.
- moon at least one of these plates (34, 35) has a length greater than the length of the sleeve (15), in order to avoid damage to the lower surface of the sleeve when placed on the ground.
- these tubular plates protect the surface of the sleeve (15) against shocks likely to occur during handling, especially during the phases of assembly or disassembly.
- a protective plate (36) closes the gap between the outer wall of the sheath (10) and the crown (18). This plaque presents an interior cut adapted to allow the transverse displacement of the sheath (10).
- Figure 3 shows a detailed view of the connection of the sleeve with the fixing crown.
- the sleeve (15) is welded to the edge internal (40) of the crown, as well as the edge upper of the internal protection plate (34).
- This protective plate has a shape tubular, with a flared upper part (41).
- the outer plate (35) is welded to the surface lower (42) of the crown (18).
- Figure 4 shows a detailed view of fixing the lower part of the sleeve (15).
- the first part (28) of the flange of fixing is welded on the outer wall of the sheath steam inlet (10) by two weld beads (50, 51).
- the second part (29) of the flange is welded to the inlet (13) of the low pressure body by two weld beads (52, 53).
- the crown (27) is welded to the plate connection (26).
- the crown (27) is bolted to the lower part (29) of the flange by bolts including the head is inserted into a cavity (55) to avoid to be flush with the surface of the crown (27).
- the part upper (28) of the flange is bolted to the crown (27) forming a spacer between the two parts of the flange.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
- une enveloppe externe reliée à la manchette du condenseur et résistant à la pression atmosphérique. Cette enveloppe est portée par le massif et ne comporte pas de partie chaude ;
- un corps interne à deux flux symétriques 15 renfermant la veine de vapeur. Il porte les diaphragmes basse-pression.
- la figure 1 représente une vue d'ensemble du module basse-pression ;
- la figure 2 représente une vue éclatée en trois dimensions d'un dispositif selon l'invention ;
- la figure 3 représente une vue en détail du raccordement du manchon avec la couronne de fixation ;
- la figure 4 représente une vue en détail de la fixation de la partie inférieure du manchon.
Claims (7)
- Dispositif de liaison étanche comportant une gaine d'arrivée de vapeur (10), un corps interne (7) de l'ensemble basse-pression d'une turbine à vapeur comprenant également une enveloppe extérieure (1), ladite liaison est du type constitué par un module monté sur ladite enveloppe extérieure basse-pression, et incorporant un moyen propre à absorber les déplacements de l'extrémité de la gaine d'arrivée (10), la liaison entre la gaine d'arrivée de vapeur (10) et l'enveloppe extérieure (1) est réalisée par l'intermédiaire d'un élément tubulaire déformable (15) dont l'extrémité supérieure est solidaire de l'enveloppe extérieure basse pression (1) et dont l'extrémité inférieure est solidaire d'une bride de liaison de la gaine d'arrivée de vapeur (10) avec le corps basse-pression (7) caractérisé en ce que l'enveloppe (1) comporte une couronne annulaire d'un diamètre intérieur sensiblement supérieur au diamètre extérieur de la gaine d'arrivée de vapeur (10), ladite couronne présentant des alésages permettant la fixation d'une couronne complémentaire solidaire de l'élément tubulaire déformable (15) par l'intermédiaire de boulons accessibles de l'extérieur de l'enveloppe de basse-pression.
- Dispositif selon la revendication 1 caractérisé en ce que l'élément tubulaire déformable (15) est constitué par un manchon ondulé en forme de soufflet.
- Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que l'élément tubulaire déformable (15) est fixé à sa partie inférieure sur la bride entourant le corps basse pression par l'intermédiaire d'une couronne intérieure reliée à ladite bride par des boulons accessibles de l'extérieur de l'enveloppe de basse pression.
- Dispositif selon l'une au moins des revendications 1 à 3 caractérisé en ce que la surface extérieure de la gaine d'arrivée de vapeur (10) et la surface intérieure de l'élément cylindrique déformable délimite un espace annulaire au fond duquel est située la couronne inférieure de fixation de l'élément tubulaire sur le corps basse pression.
- Dispositif selon l'une au moins des revendications 1 à 3 caractérisé en ce qu'il comporte une plaque annulaire de protection obturant l'espace subsistant entre la couronne complémentaire fixée à l'extrémité supérieure de l'élément déformable, et la paroi de la gaine d'arrivée de vapeur (10).
- Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que l'élément tubulaire déformable (15) est prolongé par une virole d'ajustement de la longueur.
- Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que l'élément tubulaire déformable (15) est protégé par une plaque tubulaire rigide extérieure d'une longueur supérieure à la longueur de l'élément tubulaire déformable (15)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9709208A FR2766233B1 (fr) | 1997-07-21 | 1997-07-21 | Dispositif etanche pour le raccordement entre la gaine d'arrivee de vapeur et le corps interne de l'ensemble basse-pression d'une turbine a vapeur |
FR9709208 | 1997-07-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0893578A1 EP0893578A1 (fr) | 1999-01-27 |
EP0893578B1 true EP0893578B1 (fr) | 2004-03-24 |
Family
ID=9509412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980401770 Expired - Lifetime EP0893578B1 (fr) | 1997-07-21 | 1998-07-13 | Dispositif étanche pour le raccordement entre la gaine d'arrivée de vapeur et le corps interne de l'ensemble basse-pression d'une turbine à vapeur |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0893578B1 (fr) |
JP (1) | JPH1193615A (fr) |
DE (1) | DE69822563T2 (fr) |
FR (1) | FR2766233B1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU110410U1 (ru) * | 2010-12-24 | 2011-11-20 | Альстон Текнолоджи Лтд | Модуль для паровой турбины |
CN102588008B (zh) * | 2012-03-19 | 2014-12-10 | 山东齐鲁电机制造有限公司 | 汽轮机低压轴端汽封三点定心调整装置 |
EP2762689B1 (fr) | 2013-02-05 | 2017-06-07 | General Electric Technology GmbH | Centrale thermique à vapeur avec une seconde turbine basse pression et un système de condensation supplémentaire et procédé de fonctionnement d'une telle centrale thermique |
EP2927431A1 (fr) * | 2014-04-02 | 2015-10-07 | Siemens Aktiengesellschaft | Composant destiné au guidage de gaz chaud |
CN104481606B (zh) * | 2014-11-25 | 2016-02-17 | 东方电气集团东方汽轮机有限公司 | 一种试验用汽轮机隔板 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2196766A (en) * | 1937-07-10 | 1940-04-09 | Eastman Kodak Co | Expansion joint |
GB578010A (en) * | 1941-11-21 | 1946-06-12 | Frank Bernard Halford | Improvements in jet propulsion plant |
FR1440338A (fr) * | 1965-06-25 | 1966-05-27 | Licentia Gmbh | Dispositif applicable au conduit de trop-plein de turbines à vapeur, en particulierdans des carters de basse pression à plusieurs enveloppes avec admission centrale |
DE4118777C2 (de) * | 1991-06-07 | 2002-04-18 | Mtu Aero Engines Gmbh | Gasturbinentriebwerk mit Wärmetauscher |
DE4204530A1 (de) * | 1992-02-15 | 1993-08-19 | Asea Brown Boveri | Rohrsystem |
-
1997
- 1997-07-21 FR FR9709208A patent/FR2766233B1/fr not_active Expired - Fee Related
-
1998
- 1998-07-13 EP EP19980401770 patent/EP0893578B1/fr not_active Expired - Lifetime
- 1998-07-13 DE DE69822563T patent/DE69822563T2/de not_active Expired - Lifetime
- 1998-07-17 JP JP20402198A patent/JPH1193615A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2766233A1 (fr) | 1999-01-22 |
FR2766233B1 (fr) | 2001-12-07 |
DE69822563T2 (de) | 2005-04-07 |
EP0893578A1 (fr) | 1999-01-27 |
DE69822563D1 (de) | 2004-04-29 |
JPH1193615A (ja) | 1999-04-06 |
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