EP0893578A1 - Vorrichtung für eine dichte Kupplung zwischen dem Dampfzufuhrrohr und dem inneren Körper einer Niederdruck-Dampfturbinenanlage - Google Patents

Vorrichtung für eine dichte Kupplung zwischen dem Dampfzufuhrrohr und dem inneren Körper einer Niederdruck-Dampfturbinenanlage Download PDF

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Publication number
EP0893578A1
EP0893578A1 EP98401770A EP98401770A EP0893578A1 EP 0893578 A1 EP0893578 A1 EP 0893578A1 EP 98401770 A EP98401770 A EP 98401770A EP 98401770 A EP98401770 A EP 98401770A EP 0893578 A1 EP0893578 A1 EP 0893578A1
Authority
EP
European Patent Office
Prior art keywords
deformable
low
crown
pressure
steam
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.)
Granted
Application number
EP98401770A
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English (en)
French (fr)
Other versions
EP0893578B1 (de
Inventor
Jean-Luc Cecchetto
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.)
Alstom SA
Original Assignee
GEC Alsthom Electromecanique SA
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 GEC Alsthom Electromecanique SA filed Critical GEC Alsthom Electromecanique SA
Publication of EP0893578A1 publication Critical patent/EP0893578A1/de
Application granted granted Critical
Publication of EP0893578B1 publication Critical patent/EP0893578B1/de
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
    • 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 steam turbines, and more specifically the connection between the steam inlet duct and the low pressure body of a steam turbine.
  • a piping connects the middle part pressure at the low pressure part. This piping leads to the arrival of steam from the internal body.
  • connection usually takes place by a compensator that cannot be reached for the disassembly only from inside the low-pressure part. This requires disassembly of several elements of this set, and results in a heavy intervention immobilizing the turbine for a important time.
  • the object of the invention presence is to remedy this drawback by proposing a device easily removable from outside the turbine, and a 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 through 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 this 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 ring 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 trellis.
  • 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 inner 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 adjusts the length of the device 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).
  • seals (30, 31) seal between the crown (27) and the two parts (28, 29) of the flange.
  • 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 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 (8).
  • 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 flange spreads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP19980401770 1997-07-21 1998-07-13 Vorrichtung für eine dichte Kupplung zwischen dem Dampfzufuhrrohr und dem inneren Körper einer Niederdruck-Dampfturbinenanlage Expired - Lifetime EP0893578B1 (de)

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 true EP0893578A1 (de) 1999-01-27
EP0893578B1 EP0893578B1 (de) 2004-03-24

Family

ID=9509412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980401770 Expired - Lifetime EP0893578B1 (de) 1997-07-21 1998-07-13 Vorrichtung für eine dichte Kupplung zwischen dem Dampfzufuhrrohr und dem inneren Körper einer Niederdruck-Dampfturbinenanlage

Country Status (4)

Country Link
EP (1) EP0893578B1 (de)
JP (1) JPH1193615A (de)
DE (1) DE69822563T2 (de)
FR (1) FR2766233B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2469044A1 (de) * 2010-12-24 2012-06-27 Alstom Technology Ltd Modul für eine Dampfturbine
CN102588008A (zh) * 2012-03-19 2012-07-18 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
EP2927431A1 (de) * 2014-04-02 2015-10-07 Siemens Aktiengesellschaft Bauteil zur Führung von Heißgas

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2762689B1 (de) 2013-02-05 2017-06-07 General Electric Technology GmbH Dampfkraftanlage mit einer zweiten Niederdruckturbine und einem zusätzlichen Kondensierungssystem und Verfahren zum Betrieb einer solchen Dampfkraftanlage
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196766A (en) * 1937-07-10 1940-04-09 Eastman Kodak Co Expansion joint
US2437385A (en) * 1941-11-21 1948-03-09 Dehavilland Aircraft 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
US5243815A (en) * 1991-06-07 1993-09-14 Mtu Motoren Und Turbinen-Union Munchen Gmbh Assembly of a heat exchanger on a gas turbine engine
US5427419A (en) * 1992-02-15 1995-06-27 Asea Brown Boveri Ltd. Pipe system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196766A (en) * 1937-07-10 1940-04-09 Eastman Kodak Co Expansion joint
US2437385A (en) * 1941-11-21 1948-03-09 Dehavilland Aircraft 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
US5243815A (en) * 1991-06-07 1993-09-14 Mtu Motoren Und Turbinen-Union Munchen Gmbh Assembly of a heat exchanger on a gas turbine engine
US5427419A (en) * 1992-02-15 1995-06-27 Asea Brown Boveri Ltd. Pipe system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2469044A1 (de) * 2010-12-24 2012-06-27 Alstom Technology Ltd Modul für eine Dampfturbine
CN102536356A (zh) * 2010-12-24 2012-07-04 阿尔斯通技术有限公司 汽轮机模块
US9091181B2 (en) 2010-12-24 2015-07-28 Alstom Technology Ltd. Module for a steam turbine
CN102536356B (zh) * 2010-12-24 2015-11-25 阿尔斯通技术有限公司 汽轮机模块
CN102588008A (zh) * 2012-03-19 2012-07-18 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
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
EP2927431A1 (de) * 2014-04-02 2015-10-07 Siemens Aktiengesellschaft Bauteil zur Führung von Heißgas

Also Published As

Publication number Publication date
DE69822563D1 (de) 2004-04-29
JPH1193615A (ja) 1999-04-06
DE69822563T2 (de) 2005-04-07
FR2766233A1 (fr) 1999-01-22
EP0893578B1 (de) 2004-03-24
FR2766233B1 (fr) 2001-12-07

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