EP2310637A1 - Dispositif de support d'aube directrice - Google Patents

Dispositif de support d'aube directrice

Info

Publication number
EP2310637A1
EP2310637A1 EP09780716A EP09780716A EP2310637A1 EP 2310637 A1 EP2310637 A1 EP 2310637A1 EP 09780716 A EP09780716 A EP 09780716A EP 09780716 A EP09780716 A EP 09780716A EP 2310637 A1 EP2310637 A1 EP 2310637A1
Authority
EP
European Patent Office
Prior art keywords
holder
guide vane
fixing element
guide
carrier
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Withdrawn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
EP09780716A
Other languages
German (de)
English (en)
Inventor
Richard Geist
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
Publication of EP2310637A1 publication Critical patent/EP2310637A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F01D25/246—Fastening of diaphragms or stator-rings
    • 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
    • F01D25/265—Vertically split casings; Clamping arrangements therefor
    • 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
    • F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • F05D2230/644—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins for adjusting the position or the alignment, e.g. wedges or eccenters

Definitions

  • the invention relates to a guide vane support for a turbine and to a method for adjusting a radial gap between the guide vane support and a support for the guide vane support.
  • Guide vane carriers are nowadays installed in almost all multistage overpressure steam turbines.
  • the main task of the vane carrier is to accommodate the Leitbeschaufelung.
  • the guide vanes are guided axially in guide elements.
  • the lateral fixing is usually done by vertical bolts.
  • the carriers are held in the outer housing by a groove-web connection.
  • the arrangement must be chosen so that the guide blade carrier can stretch easily under the influence of heat, without changing the axis-centered position.
  • To adjust the center position of the guide vane carrier various adjustment elements are used, which must take in addition to the weight, even the resulting torque from the Leitbeschaufelung.
  • the guide blade carrier is usually divided into two parts, with the horizontal height adjustment usually taking place at the lower part of the two-part guide blade carrier.
  • fitting elements For horizontal height adjustment fitting elements are used, which are ground to an exact degree and which are arranged between the turbine housing and the vane support.
  • the fitting elements are fastened in the guide vane carrier by means of fixing screws.
  • the fitting elements must be ground to such a degree that the gap between the guide blade carrier and the turbine housing at the top and bottom is exactly the same size.
  • the adjustment of the gap in the lateral direction takes place via additional adjusting screws.
  • the centerline alignment of the vane support must be very accurate as this also adjusts the radial gap between the vane support / vanes and the turbine rotor.
  • a disadvantage of the vane support arrangement described is, above all, that the fitting elements must be individually ground in a complex manner for each guide vane support arrangement. This leads to a high installation cost.
  • a turbine comprising a vane carrier and a holder for the vane carrier is characterized in that a fixing element is arranged between the vane carrier and the holder, such that the guide vane carrier is pivotable about the fixing element within the holder. Due to the pivotable fixing of the guide blade carrier, it is achieved that the guide blade carrier can be fixed in the circumferential direction and, nevertheless, a change in the radial gap between the guide blade carrier and the rotor can be made.
  • An advantageous embodiment of the invention provides that the guide blade carrier assembly is characterized in that between the guide blade carrier and the holder twoginaneinstellelemente are arranged, such that the Leitschaufelani is adjustable within the holder in the horizontal direction.
  • the height adjustment elements are used instead of the previously used fitting elements and allow, in contrast to the previous solution, a simple horizontal adjustment of the vane carrier, without the re-grinding of the fitting elements is required.
  • the adjustment of the radial gap between the guide vane carrier and the rotor substantially simplified. The setting can be done easily in the installed state.
  • a particularly preferred embodiment of the invention provides that the fixing element has a pivot about which the guide blade carrier is pivotable.
  • a pivot pin results in a particularly simple embodiment of the fixing element and it is a particularly simple pivoting of the vane support realized.
  • the fixing element is characterized particularly simple and inexpensive to manufacture and it grants due to its simple training a secure function.
  • a further preferred embodiment of the invention provides that the fixing element has two flats arranged parallel to one another, which form a positive connection together with a recess in the holder of the guide blade carrier, such that the guide blade carrier is fixed in the holder in the circumferential direction.
  • the holder is usually part of the turbine housing.
  • the fixation in the circumferential direction is thus particularly easy to implement, in which the fixing element is simply inserted together with the Leitschaufelaunterteil into the recess.
  • the flattenings of the fixing element come to rest against the lateral surfaces of the recess of the holder. A displacement of the fixing element and the associated guide vane carrier in the circumferential direction is effectively prevented.
  • the design of the fixing element with the two flats and the interaction with the recess in the holder of the guide blade carrier is particularly easy to produce and still provides a secure fixation of the guide vane carrier.
  • the recess and the preparation of the mutually parallel flats in the fixing element can inexpensively and still be manufactured with high accuracy.
  • a further particularly preferred embodiment of the invention provides that thetreuneinstellelemente are substantially identical in construction to the fixing element and additionally have a threaded hole for an adjusting screw.
  • the substantially identical construction with the fixing element enables a particularly cost-effective production, since the components are manufactured substantially the same.
  • the flattenings which are formed on the fixing element can be omitted in the height adjustment elements.
  • the formation of a threaded hole in the fixing elements makes it possible to receive an adjustment screw.
  • the adjusting screw serves to move the guide vane carrier horizontally within the holder. By screwing the adjusting screw, the guide blade carrier can be moved in a horizontal position upwards. Unscrewing the adjusting screws moves the guide rail carrier downwards in a horizontal position.
  • the use of height adjustment elements with a threaded hole and an adjusting screw allows the stepless adjustment of the guide rail carrier in the horizontal direction when installed. This results in a particularly simple adjustment of the radial gap between the guide vane carrier and the rotor.
  • a particularly preferred embodiment of the invention provides that the longitudinal axis of the threaded holes in the height adjustment and the longitudinal axis of the pivot perpendicular to each other.
  • the height adjustment can rotate when screwing the adjusting screw to the pivot around, so that a clean investment of the adjusting screw is always ensured on a corresponding surface of the vane support. It can not come to a tilting or to an oblique rest of the adjusting screw on the correspondingly elaborated contact surface on the holder. This is important as the weight and the torque of the vane support are substantially absorbed by the screws.
  • a further advantageous embodiment of the invention provides that the guide blade carrier and the holder for the guide blade carrier are each formed in two parts in the form of a lower part and an upper part.
  • the two-part design of the vane carrier facilitates the assembly of the guide vanes considerably. Through the use of the lower and upper part, both the guide blade carrier and the support for the guide vane, the overall assembly effort and the production of both components are facilitated.
  • the invention further includes a method of adjusting the radial gap between the vane support and the support, characterized by inserting the fixation element and the height adjustment screw into the vane support; Inserting the guide vane carrier in the holder and fixation on the fixing element; and adjusting the radial clearance by turning the adjusting screws in the100neinstellelementen.
  • the fixing element ensures by the arrangement in the holder of the guide blade carrier for a fixation of the guide blade carrier in the circumferential direction.
  • a height adjustment of the radial clearance of the vane carrier arrangement is made possible by the displaceability of the guide element in the vertical direction. In this case, a pivoting of the guide vane support is ensured by the fixing element.
  • the guide vane carrier By adjusting a setting screw in the height adjustment element, the guide vane carrier is displaced in a horizontal position. At the same time, the guide vane carrier is pivoted about the fixing element.
  • the radial gap between the guide blade carrier and the holder can be set exactly, so that a uniform Ra Dial gap is also set between the guide vane / vanes and the rotor of the turbine.
  • the guide vane carrier assembly according to the invention thus allows with only three elements, namely a fixing element and the two height adjustment an exact adjustment of the radial clearance between the vane support and the rotor. This results in a significant reduction in the design effort.
  • the adjustment of the guide blade carrier can be carried out with the aid of the height adjustment elements in the installed state and steplessly. This considerably reduces the assembly effort.
  • FIG. 1 shows a lower part of a holder according to the invention for the guide vane carrier;
  • Figure 2 shows a lower part of a two-part invention
  • FIG. 3 shows the guide vane carrier according to the invention shown in FIG. 2 with mounted fixing element and height adjustment elements;
  • Figure 4 is a detail view of a fixing and a mecanicneinstellelements;
  • FIG. 5 shows the guide blade carrier arrangement of a two-part guide blade carrier and a two-part holder for the guide blade carrier in the mounted state.
  • 1 shows the lower part of a two-part holder 2 for a guide vane carrier 1.
  • the holder 2 is usually part of the turbine housing, but could also be designed as a separate component.
  • the holder 2 has on its inner peripheral surface 11 a web 12. At both open ends of the holder 2 recesses 13 are formed in the web. The recesses serve in the assembled state to provide a clean contact surface for the adjusting screws 10 of theuiteneinstellelemente 4 (see Figures 3 and 4). Furthermore, the holder 2 in the circumferential direction in the middle of the web 12 has a recess 8. The recess 8 is used in the assembled state for receiving the fixing element 3 (see Figure 4). The exact structure of the vane support assembly and the function ofciteneinstellelemente and the fixing element 3 will be explained later in Figure 4 and 5 in more detail.
  • FIG. 2 shows a three-dimensional view of the guide blade carrier 1.
  • the guide blade carrier 1 has an outwardly directed U-shaped profile. Complementary to the recesses 13 in the web 12 and the recess 8, receptacles for the height adjustment elements 4 and the fixing element 3 are provided in the guide blade carrier 1 in the outer peripheral surface.
  • the recordings in the guide blade carrier have in addition to a flattening in each case a bore 14 which is introduced into a leg of the U-shaped profile.
  • the fixing element 3 and thentinoneinstellelemente 4 are introduced with their pivot pin 5 in the bore of the vane support 1.
  • the receptacles additionally have a slight flattening on the U-shaped base of the guide vane carrier 1.
  • the bores 14 are preferably introduced into the limb which lies downstream of the flow direction and thus in the pressure direction p (see FIG. 2).
  • the arrangement and attachment of the vanes in the vane support 1 is not shown in detail, but can be done in a known manner.
  • FIGS. 4a and 4b shows a detailed view of the fixing element 3 and a height adjustment element 4.
  • the two elements are substantially identical, and consist of a substantially cylindrical base body and a pivot pin 5 which is inserted into the bore 14 in the guide blade carrier 1.
  • the fixing element 3 additionally has two flattened portions 6, 7 arranged parallel to one another, which abut in the recess 8 of the holder 2 when installed and thereby enable a positive connection between the guide blade carrier 1 and the holder 2, such that the guide plate carrier 1 in the circumferential direction C is fixed in the holder 2.
  • the satisfiedneinstellelemente 4 additionally have a threaded hole 9 for an adjusting screw 10.
  • the longitudinal axis Ll of the threaded hole 9 and the longitudinal axis L2 of the pivot 5 are perpendicular to each other.
  • the height adjustment can rotate during rotation of the adjusting screws at a certain angle, so that the adjustment without tilting on the intended surface in the holder 2 comes to rest.
  • This is particularly important because the weight of the vane support 1 is on the adjusting screws. It must therefore be ensured on the intended surfaces in the holder 2 a particularly good and the largest possible contact surface of the adjusting screws.
  • FIG. 5 shows the completely assembled guide vane carrier arrangement.
  • the U-shaped profile of the guide blade carrier 1 is arranged in the holder 2 so that it surrounds the web 12 of the holder 2. As a result, it is simultaneously fixed in the axial direction.
  • the fixing element 3 and the mecanicneinstellelemente 4 are in the respective receptacles in the holder 2 and are protected enclosed by the guide vane 1. This can damage the elements are largely avoided.
  • the method for adjusting the radial gap between the guide blade carrier 1 and the holder 2 will be explained in more detail below. First, the fixing element 3 and themonyneinstellelemente 4 is used with its pivot 5 in the bore 14 in the guide vane 1.
  • Adjusting the radial gap between the guide blade carrier 1 and the holder 2 now takes place exclusively by adjusting the adjusting screws 10.
  • a pivoting of the guide blade carrier takes place within the holder 2 about the fixing element 3.
  • the adjusting screws 10 of thechezneinstellelemente 4 must now be screwed in each case to the left and right so far that sets a uniform radial gap between the vane support 1 and the bracket 2.
  • the guide vane support arrangement according to the invention for fixing a guide vane support 1 thus makes it possible to set the radial gap between the vane support 1 and the support 2 and thus the radial gap between guide vanes and rotor with only two adjustment screws.
  • the setting can be done continuously and in the installed state.
  • the hitherto complicated height adjustment with the aid of fitting elements which, moreover, has been designed to an exact measure. can be cut, can be dispensed with.
  • the present invention thus facilitates the assembly of the Leitschaufelaanowski enormous. In addition, the design effort of Leitschaufelafix ist reduced considerably.
  • the vane support arrangement according to the invention is suitable for any type of turbine, in particular for gas and steam turbines.
  • This described arrangement can also be used for fixing in wave labyrinths, Ausreteskolbenlabyrinthen, shelves or inner housings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L’invention concerne un dispositif de support d’aube directrice pour turbine, comportant un support d’aube directrice (1) et un élément de retenue (2) pour le support d’aube directrice. Un élément de fixation (3) est disposé entre le support d’aube directrice (1) et l’élément de retenue (2) de telle sorte que le support d’aube directrice (1) puisse pivoter à l’intérieur de l’élément de retenue (2) autour de l’élément de fixation (3). L’invention comporte en outre un procédé de réglage du jeu radial entre le support d’aube directrice (1) et l’élément de retenue (2).
EP09780716A 2008-07-16 2009-07-16 Dispositif de support d'aube directrice Withdrawn EP2310637A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810033400 DE102008033400B4 (de) 2008-07-16 2008-07-16 Leitschaufelträgeranordnung
PCT/EP2009/059161 WO2010007136A1 (fr) 2008-07-16 2009-07-16 Dispositif de support d’aube directrice

Publications (1)

Publication Number Publication Date
EP2310637A1 true EP2310637A1 (fr) 2011-04-20

Family

ID=41119733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09780716A Withdrawn EP2310637A1 (fr) 2008-07-16 2009-07-16 Dispositif de support d'aube directrice

Country Status (5)

Country Link
EP (1) EP2310637A1 (fr)
JP (1) JP5101735B2 (fr)
CN (1) CN102159796B (fr)
DE (1) DE102008033400B4 (fr)
WO (1) WO2010007136A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010034569A1 (de) 2010-08-17 2012-02-23 Siemens Aktiengesellschaft Leitschaufelträgerfixierung
DE102014202744A1 (de) * 2014-02-14 2015-08-20 Siemens Aktiengesellschaft Schutz vor Erosion und Erosionskorrosion an Stegen von Gußgehäusen
EP2930307A1 (fr) * 2014-04-09 2015-10-14 Alstom Technology Ltd Support d'ailette de redresseur pour un compresseur ou une section de turbine d'une turbomachine axiale
JP7222956B2 (ja) * 2020-08-25 2023-02-15 三菱重工業株式会社 蒸気タービンの車室組立、分解方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE726510C (de) * 1940-01-25 1942-10-15 Aeg Trag- und Zentriereinrichtung fuer in der Teilfuge des Gehaeuses unterteilte Leitraeder von Dampf- oder Gasturbinen
US2862453A (en) * 1954-04-01 1958-12-02 Perry I Nagle Adjustable pump support
US3427000A (en) * 1966-11-14 1969-02-11 Westinghouse Electric Corp Axial flow turbine structure
US3628884A (en) * 1970-06-26 1971-12-21 Westinghouse Electric Corp Method and apparatus for supporting an inner casing structure
US4204803A (en) * 1978-07-21 1980-05-27 General Electric Company Diaphragm support
GB2050524B (en) * 1979-06-06 1982-10-20 Rolls Royce Turbine stator shroud assembly
JPH1077803A (ja) * 1996-09-04 1998-03-24 Mitsubishi Heavy Ind Ltd タービン翼環の位置決め用偏心ピン
JPH10299411A (ja) * 1997-04-28 1998-11-10 Toshiba Corp 蒸気タービンノズル支持装置
US6244819B1 (en) * 1998-11-10 2001-06-12 Dresser-Rand Company Adjustable supporting assembly for turbine flowpath components and method thereof
JP4326315B2 (ja) * 2003-12-08 2009-09-02 三菱重工業株式会社 翼環構造
JP4801373B2 (ja) * 2005-05-16 2011-10-26 三菱重工業株式会社 タービンの車室構造

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010007136A1 *

Also Published As

Publication number Publication date
DE102008033400B4 (de) 2012-04-12
JP5101735B2 (ja) 2012-12-19
CN102159796B (zh) 2014-10-29
WO2010007136A1 (fr) 2010-01-21
JP2011528083A (ja) 2011-11-10
CN102159796A (zh) 2011-08-17
DE102008033400A1 (de) 2010-01-21

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