EP2947277A1 - Liaison de bague de butée d'angle démontable - Google Patents

Liaison de bague de butée d'angle démontable Download PDF

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Publication number
EP2947277A1
EP2947277A1 EP14169387.9A EP14169387A EP2947277A1 EP 2947277 A1 EP2947277 A1 EP 2947277A1 EP 14169387 A EP14169387 A EP 14169387A EP 2947277 A1 EP2947277 A1 EP 2947277A1
Authority
EP
European Patent Office
Prior art keywords
threaded ring
ring
threaded
leg
valve
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Withdrawn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
EP14169387.9A
Other languages
German (de)
English (en)
Inventor
Daniel Zurhausen
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 EP14169387.9A priority Critical patent/EP2947277A1/fr
Priority to PCT/EP2015/058351 priority patent/WO2015176882A1/fr
Publication of EP2947277A1 publication Critical patent/EP2947277A1/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Withdrawn legal-status Critical Current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
    • 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/005—Sealing means between non relatively rotating elements
    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
    • 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
    • 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
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/047—Nozzle boxes
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • 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
    • F05D2240/00—Components
    • F05D2240/55—Seals
    • F05D2240/59—Lamellar seals

Definitions

  • the invention relates to an arrangement for connecting a valve diffuser with a housing, in particular the inner housing of a turbomachine, in particular a steam turbine, comprising an L-ring.
  • Power plants usually include several components that are subject to wear. Therefore, in revisions, such as in a major overhaul, almost all wearing parts of a turbine train are examined for their function and optionally processed or replaced.
  • a turbomachine such as a steam turbine, an inner housing and an outer housing, wherein a rotor is disposed within the inner housing.
  • Main steam usually flows through a main steam line and live steam valves into the inner housing. This steam supply takes place by means of a diffuser.
  • the connection between the diffuser and the inner housing is realized or sealed with an angle ring connection.
  • This angle ring connection makes it difficult to remove the inner housing from the outer housing. The reason for this is that the angle ring connection is guided transversely to the lifting direction in a groove on the inner housing. Thus, a lifting is blocked. The angle ring must therefore be pulled out of the groove during the revisions.
  • the invention seeks to remedy this situation.
  • the object of the invention is to offer an easily removable arrangement for connecting a diffuser to a housing.
  • an arrangement for connecting a valve diffuser with a housing, in particular the inner housing of a turbomachine, in particular a steam turbine, comprising an L-ring, which projects into a groove with a first leg into the housing, a first threaded ring, via a first Thread is connected to the valve diffuser, a second threaded ring which is connected via a second thread with the valve diffuser, wherein the L-ring has a second leg which is disposed between the first threaded ring and the second threaded ring.
  • the invention thus goes the way to offer by means of the first threaded ring and the second threaded ring an arrangement that can be easily disassembled.
  • the advantage of the first threaded ring and the second threaded ring is thus that the L-ring can be solved within two assembly steps. This disassembly is carried out without the valve housing from the outer casing of the turbine must be dismantled. Thus, it is not necessary to renew the seal between the valve housing and the outer housing, resulting in a huge cost savings.
  • valve housing By eliminating the disassembly of the valve housing also eliminates a separation and welding of the Zudampfrohre and especially a testing of the Zampfampfrohre. Furthermore, eliminating the need to re-mount the valve housing and thereby eliminating many hours of assembly, resulting in a cost savings. Likewise, the revision can be performed faster, resulting in a quick re-provision of the turbo set.
  • the first threaded ring has a first threaded ring leg, which bears against the second leg of the L-ring.
  • a groove is realized virtually between the first threaded ring leg of the first threaded ring and the second threaded ring, in which the second leg of the L-ring is applied.
  • the second leg of the L-ring is in such a way that a movement within the groove formed between the first threaded leg and the second threaded ring movement is possible.
  • the first threaded ring has a second threaded leg, wherein the valve diffuser has an end edge and the second threaded leg abuts against the edge.
  • the first threaded ring abuts the end of the valve diffuser.
  • the first thread is formed as a first external thread on the valve diffuser. This means that the first threaded ring is screwed onto the valve diffuser. Through the end edge of the valve diffuser, a good connection between the first threaded ring and the valve diffuser can be made. Thus, the position of the first threaded leg is fixed. A subsequent readjustment can be omitted.
  • the second threaded ring has a third threaded ring leg.
  • the first external thread is formed about a rotationally symmetrical axis.
  • the third threaded leg is disposed behind the first threaded ring when viewed in a radial direction from the rotationally symmetric axis. This means that the second threaded ring at least partially projects around the first threaded ring.
  • the direction of rotation of the first Threaded rings and the second threaded ring or the first thread and the second thread are such that a movement of the first threaded ring to the second threaded ring takes place.
  • the first threaded ring must be positioned relative to the second threaded ring such that a groove for the second leg is realized between the first threaded ring and the second threaded ring.
  • the valve diffuser, the first threaded ring and the second threaded ring are rotatably formed relative to each other.
  • a cylindrical pin is provided for this purpose, which is arranged in the valve diffuser through the first threaded ring and the second threaded ring.
  • the FIG. 1 shows a part of a turbomachine.
  • turbomachine is a steam turbine 1.
  • the steam turbine 1 comprises a rotatably mounted about a non-illustrated axis of rotation rotor 2.
  • an inner housing 3 is arranged.
  • the inner housing 3 comprises an inner housing upper part 3a and an inner housing lower part 3b, wherein the inner housing upper part 3a is screwed together with the inner housing lower part 3b via a flange 4.
  • the screws are not shown in detail.
  • An outer housing 5 is arranged around the inner housing 3, wherein the outer housing 5 likewise consists of an outer housing upper part 5a and an outer housing lower part 5b.
  • the outer housing upper part 5a is screwed by means of a further flange 6 with the outer housing lower part 5b.
  • the screw connection is in the FIG. 1 not shown in detail.
  • Fresh steam is fed via a not shown live steam line and a live steam valve an inflow 7 of the steam turbine 1.
  • the main steam line is fluidly connected with a live steam valve.
  • the valve comprises a valve housing 8, which is connected via a valve housing flange 9 with the outer housing 5.
  • the valve housing 8 is rotationally symmetrical.
  • a valve diffuser 10 is arranged along an axis of symmetry 11.
  • the valve diffuser 10 is arranged on the inventive arrangement 12 to the inner housing 3, in particular inner housing lower part 3b.
  • the arrangement 12 is in the FIG. 2 described in more detail.
  • the inner housing lower part 3b has a circular opening 13, which is fluidly connected to a circular opening 14 of the valve diffuser 10 via the arrangement 12 in fluid communication with each other.
  • the inventive arrangement 12 is shown, which hereinafter with the FIG. 2 will be described in more detail.
  • the arrangement 12 comprises an L-ring 17.
  • the L-ring 17 is rotationally symmetrical and has in its axial extent a portion 18, which is also referred to as the first leg 19.
  • a radially extending section 20 Arranged at substantially 90 degrees to the first leg 19 is a radially extending section 20, which is referred to here as a second leg 21.
  • the first leg 19 protrudes into a groove 22.
  • the groove 22 is arranged in the housing, in particular inner housing 3, wherein the groove 22 is formed in a socket 23.
  • the nozzle 23 is formed radially symmetrically about the axis of symmetry 11.
  • the nozzle 23 has a radial portion 24, which rests on the inner housing 3, in particular the inner housing lower part 3b.
  • the nozzle 23 is connected via a thread 25 to the inner housing 3, in particular inner housing lower part 3b.
  • the nozzle 23 is screwed onto the inner housing 3.
  • the thread 25 is in this case an external thread on the inner housing.
  • the assembly 12 further includes a first threaded ring 26 which is connected via a first thread 27 to the valve 10 diffuser.
  • the first threaded ring 26 is formed radially symmetrically about the axis of symmetry 11 and has in its radial extent a first threaded ring leg 28, which bears against the second leg 21 of the first L-ring 17. Between the first Gewinderingschenkel 28 and the nozzle 24 is a gap 29th
  • the arrangement 12 further comprises a second threaded ring 30, which via a second thread 31 with the valve 10 diffuser connected is.
  • the second threaded ring 30 is formed radially symmetrically about the symmetry axis 11.
  • the assembly 12 is formed such that the second leg 21 of the L-ring 17 is disposed in a gap 32 formed between the first threaded ring 26 and the second threaded ring 30.
  • the first threaded ring has a further radial portion 33, which is referred to as a second threaded retaining leg 34.
  • the end section 16 of the valve diffuser 10 has an end edge 35.
  • the second threaded ring leg 34 rests against the end edge 35.
  • the second threaded ring leg 34 and the end edge 35 touch each other.
  • the first threaded ring 26 is thus screwed onto the valve diffuser 10 via the first thread 27 until the second threaded ring leg 34 abuts against the end edge 35.
  • the first thread 27 is formed here as a first external thread on the valve diffuser 10.
  • the second threaded ring 30 has an axial portion 36, which is referred to here as the third Gewingeringschenkel 37.
  • the third threaded ring leg 37 extends over an at least axial region over the end section 16 of the valve diffuser and a part of the first threaded ring 26.
  • the first external thread is formed around the axis of symmetry.
  • the third threaded ring leg 37 is arranged behind the first threaded ring 26 in a radial direction 38 viewed from the axis of symmetry 11.
  • the first threaded ring 26 has for this purpose an axial portion 39 which cooperates with the first thread 27.
  • the third threaded ring leg 37 is thus arranged around the axial section 39 of the first threaded ring 26.
  • the valve diffuser 10, the first threaded ring 26 and the second threaded ring 30 are formed relative to each other against rotation.
  • a cylindrical pin 40 is used, which by the first threaded ring 26 and the second threaded ring 30 is disposed in the valve diffuser 10.
  • the cylindrical pin 40 is essentially a screw with a screw head 41, which is arranged in a bore 42 in the second threaded ring 30 and a further bore 43 in the first threaded ring 26 in a thread (not shown) 44 in the valve diffuser 10.
  • first threaded ring 26 and the second threaded ring 30 require a possible Verzu ensuresresistente coating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
EP14169387.9A 2014-05-22 2014-05-22 Liaison de bague de butée d'angle démontable Withdrawn EP2947277A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14169387.9A EP2947277A1 (fr) 2014-05-22 2014-05-22 Liaison de bague de butée d'angle démontable
PCT/EP2015/058351 WO2015176882A1 (fr) 2014-05-22 2015-04-17 Liaison amovible à bague angulaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14169387.9A EP2947277A1 (fr) 2014-05-22 2014-05-22 Liaison de bague de butée d'angle démontable

Publications (1)

Publication Number Publication Date
EP2947277A1 true EP2947277A1 (fr) 2015-11-25

Family

ID=50771126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14169387.9A Withdrawn EP2947277A1 (fr) 2014-05-22 2014-05-22 Liaison de bague de butée d'angle démontable

Country Status (2)

Country Link
EP (1) EP2947277A1 (fr)
WO (1) WO2015176882A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230045873A (ko) * 2021-09-29 2023-04-05 두산에너빌리티 주식회사 씰링 어셈블리 및 이를 포함하는 터보머신

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3572693A1 (fr) * 2018-05-25 2019-11-27 Siemens Aktiengesellschaft Dispositif d'étanchéité pour une turbomachine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59224404A (ja) * 1983-06-01 1984-12-17 Fuji Electric Co Ltd 超高温蒸気タ−ビンの蒸気導入管
US4812105A (en) * 1988-02-18 1989-03-14 Westinghouse Electric Corp. Bell seal and retaining nut for high pressure turbines
US5628617A (en) * 1996-08-12 1997-05-13 Demag Delavel Turbomachinery Corp. Turbocare Division Expanding bell seal
JP2002206408A (ja) * 2001-01-10 2002-07-26 Fuji Electric Co Ltd 蒸気タービン
EP2216514A1 (fr) * 2009-02-10 2010-08-11 Siemens Aktiengesellschaft Turbine à vapeur à trois coques avec une soupape
EP2216513A1 (fr) * 2009-02-10 2010-08-11 Siemens Aktiengesellschaft Raccordement de soupape sur une turbomachine à trois coques

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59224404A (ja) * 1983-06-01 1984-12-17 Fuji Electric Co Ltd 超高温蒸気タ−ビンの蒸気導入管
US4812105A (en) * 1988-02-18 1989-03-14 Westinghouse Electric Corp. Bell seal and retaining nut for high pressure turbines
US5628617A (en) * 1996-08-12 1997-05-13 Demag Delavel Turbomachinery Corp. Turbocare Division Expanding bell seal
JP2002206408A (ja) * 2001-01-10 2002-07-26 Fuji Electric Co Ltd 蒸気タービン
EP2216514A1 (fr) * 2009-02-10 2010-08-11 Siemens Aktiengesellschaft Turbine à vapeur à trois coques avec une soupape
EP2216513A1 (fr) * 2009-02-10 2010-08-11 Siemens Aktiengesellschaft Raccordement de soupape sur une turbomachine à trois coques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230045873A (ko) * 2021-09-29 2023-04-05 두산에너빌리티 주식회사 씰링 어셈블리 및 이를 포함하는 터보머신

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Publication number Publication date
WO2015176882A1 (fr) 2015-11-26

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