EP2987962A1 - Système destiné à relier une vanne à un boîtier - Google Patents

Système destiné à relier une vanne à un boîtier Download PDF

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Publication number
EP2987962A1
EP2987962A1 EP14181893.0A EP14181893A EP2987962A1 EP 2987962 A1 EP2987962 A1 EP 2987962A1 EP 14181893 A EP14181893 A EP 14181893A EP 2987962 A1 EP2987962 A1 EP 2987962A1
Authority
EP
European Patent Office
Prior art keywords
valve
sliding bush
ring
arrangement
housing
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Withdrawn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
EP14181893.0A
Other languages
German (de)
English (en)
Inventor
Patrick Bison
Henrik Heidelberg
Markus Legenbauer
Maximilian Niederehe
Stanislaw Ruda
Roland Sievert
Leonid Tafler
Andreas Ulma
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 EP14181893.0A priority Critical patent/EP2987962A1/fr
Priority to PCT/EP2015/069069 priority patent/WO2016026902A1/fr
Publication of EP2987962A1 publication Critical patent/EP2987962A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F05D2250/00—Geometry
    • F05D2250/70—Shape
    • F05D2250/75—Shape given by its similarity to a letter, e.g. T-shaped

Definitions

  • the invention relates to an arrangement for connecting a valve to a housing.
  • Power plants usually include several components that are subject to wear. Therefore, in revisions, such. As in a major revision, almost all wearing parts of a turbine train examined for their function and possibly edited or replaced.
  • a turbomachine such as. As a steam turbine, an inner housing and an outer housing, wherein a rotor is disposed within the inner housing. During a revision, the inner housing is lifted out of the outer housing.
  • Fresh steam usually flows through a main steam line and via one or more live steam valves in the inner housing. This steam supply takes place by means of a valve.
  • the connection between the valve 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 to a housing, in particular the inner housing of a turbomachine, in particular steam turbine, comprising an L-ring, which projects into a groove with a first leg into the housing, a threaded ring, which via a first thread with a sliding bush is connected, wherein the sliding bushing is arranged spaced from the valve, and a device for fixing the sliding bush against the valve.
  • the invention thus goes the way to offer by means of the threaded ring and the slide bushing an arrangement that can be easily disassembled.
  • the sliding bush is deliberately spaced from the valve and fixed by the device. This means that the device is designed such that the sliding bushing has a fixed distance to the valve.
  • the device can be removed, resulting in that the fixation of the sliding bush is eliminated and allows movement of the sliding bush in the direction of the valve diffuser, in such a way that the L-ring protrudes from the housing. Once the first leg protrudes from the housing, it can be removed. This allows the disassembly of the inner casing of the turbine and access to the L-ring without having to cut the main steam line from the valve, loosen the bolts of the valve flange and pull the valve off the turbine.
  • the slide bushing and the valve have a groove in which an I-ring is arranged. Accordingly, both in the sliding bush and in the valve, a groove is arranged into which an I-ring protrudes and thus enables a vapor-tight arrangement.
  • such an arrangement is designed to be movable.
  • the sliding bush is fixed with respect to the valve by means of the device. In case of a revision, the device is removed and the sliding bush is moved in the direction of the valve. Therefore, the groove and the length of the I-ring must be dimensioned accordingly, so that the movement of the sliding bush in the direction of the valve is possible.
  • the valve has a cone-shaped end portion
  • the slide bushing also has a cone-shaped end portion and the device comprises a clamping piece which is formed as a half-ring and engages around the end portions, that a force is generated by the sliding bush in the direction of the valve shows.
  • the device has a clamping piece, which is designed as a half-ring.
  • This half-ring engages around the cone-shaped end portions of the valve and the slide bushing and by a radial movement of the half-ring into the valve center creates a force that moves the valve and the Gleitbuschse each other.
  • a spacer is arranged between the sliding bush and the valve, so that a fixation, d. H. fixed distance between sliding bush and valve is possible. The sliding bush and the valve therefore have a fixed distance in the operating state.
  • the device comprises a pin passing through the valve and the
  • Sliding bush protrudes.
  • the pin is in this case carried out through the valve and the sliding bush in the direction of the valve center. A displacement of the bushing relative to the valve is therefore effectively prevented.
  • the valve has a first projection and the sliding bush has a second projection, wherein the device is designed as a screw with a spacer sleeve.
  • the device is designed as a screw with a spacer sleeve.
  • the screw must be screwed in with a correspondingly large force.
  • a spacer sleeve is arranged around the screw, so that the distance between the spacer sleeve and the valve is constant.
  • the sliding bush is rotationally symmetrical about a rotation axis.
  • the FIG. 1 shows a cross-sectional view of the arrangement 1.
  • the arrangement 1 comprises an L-ring 2, which projects with a first leg 3 in a groove 4 in a housing 5, for example, an inner housing.
  • the L-ring 2 comprises a second leg 6, which bears against a threaded ring 7.
  • the threaded ring 7 in this case has a threaded ring projection 8, which rests with a flat side 9 on the second leg 6.
  • the threaded ring 7 and the L-ring 2 are formed around a rotational axis, not shown, substantially rotationally symmetrical.
  • the assembly 1 further includes a slide bushing 10 spaced from a valve 11.
  • the threaded ring 7 comprises a first thread 12, which engages in a complementary thread in the sliding bush 10 and thus enables a firm connection between the threaded ring 7 and the sliding bush 10.
  • the sliding bush 10 is formed with a slide bush projection 13.
  • the threaded ring 7 is screwed from right to left against the sliding sleeve projection 13 by means of the first thread 12.
  • the L-ring 2 has a second leg 6, which is arranged between the sliding bush 10 and the threaded ring projection 8. By the first thread 12 of the second leg 6 of the L-ring 2 is clamped. A thermally induced movement in the direction of groove 4 in the inner housing is possible.
  • the sliding bush 10 is arranged at a distance d to an edge 14 of the valve 11.
  • the arrangement 1 comprises a device 15, which is designed to fix the sliding bush 10 with respect to the valve 11.
  • the device 15 comprises a semi-annular clamping piece 16.
  • the valve 11 has a first cone-shaped end portion 17.
  • the sliding bush 10 also has a cone-shaped end portion 18.
  • the cone-shaped end portion 17 has an inclined surface 19.
  • the cone-shaped end portion 18 also has an inclined surface 20.
  • the clamping piece 16 has a likewise inclined surface 19 a.
  • the clamping piece 16 to the inclined surface 20 also has an inclined surface 20a.
  • the inclined surfaces 19, 20, 19 a and 20 a are dimensioned such that a movement of the clamping piece 16 in the drawing direction direction down to a force that moves the sliding bush 10 in the direction of the valve 11.
  • the movement of the slide bushing 10 in the direction of the valve 11 is prevented by a spacer 21.
  • This spacer 21 is disposed between the sliding bush 10 and the valve 11.
  • the spacer may be integrally formed with the clamping piece 16.
  • the valve 11 includes a further groove 22.
  • the sliding bush 10 also has a further groove 23, wherein in this groove 23, an I-ring 24 is arranged.
  • the FIG. 2 shows an alternative embodiment of the device 15.
  • the device 15 includes a first projection 25 which is associated with the valve 11.
  • the slide bushing 10 also has a second projection 26.
  • the second projection 26 has a bore, not shown, through which a screw 27 is arranged.
  • the screw 27 may have a hexagon socket and engages with its thread in a further thread in the first projection 25 of the valve 11 a. Thereby, a movement of the sliding bush 10 in the direction of the diffuser 11 is possible.
  • a spacer sleeve 28 By attaching a spacer sleeve 28 about the screw 27, the distance d between the valve 11 and the sliding bush 10 is fixed.
  • FIG. 3 shows a further alternative embodiment of the device 15.
  • the valve 11 has a projection 29 which is formed angularly.
  • the sliding bush 10 has as well as a sliding sleeve projection 30, which is complementary to the projection 29 is formed.
  • the projection 29 is fixed relative to the sliding bush projection 30 by means of a pin 31. This means that protrudes through the projection 29 of the pin 31 and protrudes into the slide bushing projection 30.
  • the pin 31 may therefore comprise a thread which is arranged in the projection 29 and protrudes partially into the sliding bush projection 30. In this variant can be dispensed with a spacer or on a spacer. First, the distance d between the sliding bushing 10 and the valve 11 is arranged and then fixed on the attachment pin 31 it.
  • FIG. 4 shows an alternative embodiment of the connection of the L-ring 2 to the inner casing of the turbine.
  • the L-ring 2 is quasi clockwise by 90 ° with respect to the embodiment according to FIG. 1 rotated so that the first leg 3 protrudes downward and the second leg 6 protrudes to the left. So that a release of the inner housing 5 is possible, this variant has an inner housing part 32, which is arranged such that a gap 33 is formed, in which the first leg 3 can be arranged.
  • the sliding bush 10 has a groove 34, in which the second leg 6 of the L-ring 2 is slidably disposed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Valve Housings (AREA)
EP14181893.0A 2014-08-22 2014-08-22 Système destiné à relier une vanne à un boîtier Withdrawn EP2987962A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14181893.0A EP2987962A1 (fr) 2014-08-22 2014-08-22 Système destiné à relier une vanne à un boîtier
PCT/EP2015/069069 WO2016026902A1 (fr) 2014-08-22 2015-08-19 Système d'assemblage d'une soupape à un carter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14181893.0A EP2987962A1 (fr) 2014-08-22 2014-08-22 Système destiné à relier une vanne à un boîtier

Publications (1)

Publication Number Publication Date
EP2987962A1 true EP2987962A1 (fr) 2016-02-24

Family

ID=51390017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14181893.0A Withdrawn EP2987962A1 (fr) 2014-08-22 2014-08-22 Système destiné à relier une vanne à un boîtier

Country Status (2)

Country Link
EP (1) EP2987962A1 (fr)
WO (1) WO2016026902A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6655409B1 (en) * 2002-09-04 2003-12-02 General Electric Company Combined stop and control valve for supplying steam
US20090183510A1 (en) * 2008-01-18 2009-07-23 Ekkehard Bielass Valve with lip seal
EP2216513A1 (fr) * 2009-02-10 2010-08-11 Siemens Aktiengesellschaft Raccordement de soupape sur une turbomachine à trois coques
EP2551463A1 (fr) * 2011-07-29 2013-01-30 Siemens Aktiengesellschaft Raccordement de soupape sur une turbomachine
EP2671957A2 (fr) * 2012-06-05 2013-12-11 General Electric Company Récipient de confinement sous pression coulé en superalliage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6655409B1 (en) * 2002-09-04 2003-12-02 General Electric Company Combined stop and control valve for supplying steam
US20090183510A1 (en) * 2008-01-18 2009-07-23 Ekkehard Bielass Valve with lip seal
EP2216513A1 (fr) * 2009-02-10 2010-08-11 Siemens Aktiengesellschaft Raccordement de soupape sur une turbomachine à trois coques
EP2551463A1 (fr) * 2011-07-29 2013-01-30 Siemens Aktiengesellschaft Raccordement de soupape sur une turbomachine
EP2671957A2 (fr) * 2012-06-05 2013-12-11 General Electric Company Récipient de confinement sous pression coulé en superalliage

Also Published As

Publication number Publication date
WO2016026902A1 (fr) 2016-02-25

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