EP3128134A1 - Agencement pour une turbine a vapeur et procédé de fixation associé - Google Patents

Agencement pour une turbine a vapeur et procédé de fixation associé Download PDF

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Publication number
EP3128134A1
EP3128134A1 EP15180035.6A EP15180035A EP3128134A1 EP 3128134 A1 EP3128134 A1 EP 3128134A1 EP 15180035 A EP15180035 A EP 15180035A EP 3128134 A1 EP3128134 A1 EP 3128134A1
Authority
EP
European Patent Office
Prior art keywords
inner housing
guide
projection
vane
arrangement according
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Withdrawn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
EP15180035.6A
Other languages
German (de)
English (en)
Inventor
David Barkowski
Peter Bocska
Christian Hortig
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 EP15180035.6A priority Critical patent/EP3128134A1/fr
Publication of EP3128134A1 publication Critical patent/EP3128134A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking

Definitions

  • the invention relates to an arrangement comprising an outer housing, a guide blade carrier arranged inside the outer housing, wherein the guide rail carrier comprises a carrier component to which on an inner surface devices for holding vane are formed, wherein the guide vane carrier opposite to Inner surface has an outer surface facing the outer housing, wherein between the outer surface and the outer housing, a tapping chamber is formed, wherein the guide vane carrier on the outer surface has a retaining projection which projects to the outer housing. Furthermore, the invention relates to a method for fixing a guide vane carrier relative to an inner housing.
  • Steam turbines are used to generate electrical energy. Steam turbines are generally divided into high-pressure turbine sections, medium-pressure turbine sections and low-pressure section turbines.
  • a live steam first flows into the high-pressure turbine section. There, the thermal energy of the steam is converted into mechanical energy of a rotor.
  • the steam After flowing through the steam through the high-pressure turbine part of the steam usually flows to a reheater to be brought back there to an elevated temperature, and then subsequently to flow into a medium-pressure turbine section. There, the steam continues to relax, the thermal energy of the steam is also converted back into mechanical energy of the rotor. After flowing through the steam through the medium-pressure turbine section, the steam flows to a low-pressure turbine section by means of an overflow line.
  • the thermal energy of the steam is converted into mechanical energy of the rotor. Subsequently, the steam flows to a condenser and condenses there to water. About suitable Pumps and piping, the water is fed back to a steam generator, wherein the water is converted back into steam in the steam generator by supplying thermal energy.
  • the water which is also referred to as feed water, preheated.
  • a partial amount of the steam is usually taken from the steam turbine, which has a corresponding thermal energy and passed to a number of surface or Mischvormaschinern.
  • the low pressure turbine section includes a low pressure rotor and a vane support disposed about the low pressure rotor and including low pressure vanes.
  • the vane support is drilled at a certain axial position over the circumference so that steam can flow in a chamber located outside the vane support, a so-called tapping chamber. The steam flows in a tangential direction to a connection to the preheating through this tapping chamber.
  • the vane support must be arranged so that the position of the vane support relative to the rotor is precisely defined.
  • the low-pressure turbine part must be designed such that the guide blade carrier, despite the thermal expansion, does not change the position relative to the rotor. Therefore, a so-called center guide is usually placed on the lower position, the so-called 6 o'clock position.
  • the center guide is to prevent movements of the guide vane carrier in the horizontal direction, perpendicular to the machine axis. Furthermore, it must be ensured by means of the center guide that allows the orientation of the vane support and inner housing tilting. Furthermore, it must be ensured that the guide blade carrier can be installed by lowering in the vertical direction in the inner housing.
  • the current embodiments of the center guides are such that the center guide is in the tangential flow thereby increasing the vapor velocity, which increases the flow losses.
  • the object of the invention is to provide an improved center guide.
  • an arrangement comprising an outer housing, a stator carrier arranged inside the outer housing, wherein the stator carrier is designed to hold guide vanes, wherein the guide carrier comprises a support member on which are formed on an inner surface devices for holding guide vanes Guide vane support opposite to the inner surface has an outer surface facing the outer housing, wherein between the outer surface and the outer housing a tapping chamber is formed, wherein the guide vane on the outer surface has a retaining projection which projects to the outer housing, wherein the retaining projection is so coupled to the outer housing in that a displacement of the guide blade carrier along the outer housing is prevented.
  • the guide vane support is formed about a rotation axis, wherein the displacement along the axis of rotation is prevented.
  • FIG. 1 shows a section of a low-pressure turbine part 1 according to the prior art.
  • the low-pressure turbine part 1 comprises a rotatably mounted rotor 2 which is rotationally symmetrical about a rotation axis 3.
  • the rotor 2 comprises a plurality of blades 5 arranged on the rotor surface 4. For the sake of clarity, only one blade is designated by the reference numeral 5.
  • the FIG. 1 illustrated low-pressure turbine part is a two-flow low-pressure turbine part 1 is executed. This means that the steam flows via an inflow region 6 into the low-pressure turbine part and from there into a first flow 7 and into a first flow second flood 8 flows. In the FIG. 1 the second flood 8 is not completely shown.
  • the vane support 9 is configured to hold the vanes 10 and therefore includes unillustrated grooves into which the vane roots (not shown) extend.
  • the vane support 9 is coupled in the axial direction with a guide ring 11.
  • an inner housing 13 is arranged around the guide blade carrier 9.
  • the inner housing 13 is also coupled to the guide rings 11.
  • an outer housing (not shown) is arranged.
  • the vane support 9 comprises an inflow opening (not shown), which fluidly produces a flow channel 14, which is formed by the rotor blades 5 and vanes 10 and a tapping chamber 15 which is arranged between the Leischaufelitati 9 and the inner housing 13.
  • the inner housing 13 has an outflow opening (not shown) for the outflow of steam from the tapping chamber 15.
  • the inflow opening is designed for the inflow of steam.
  • the vane support 9 includes a support member 16 having an inner surface 17 formed to support vanes.
  • the inner surface has devices for holding the guide vanes 10. These devices may, for example, be grooves (not shown).
  • an outer surface 18 is formed, which projects to the inner housing.
  • the tapping chamber 15 is arranged between the outer surface and the inner housing.
  • the vane support 9 has a holding projection 19 on the outer surface.
  • a center guide is formed in the radial direction from the outer surface 18 is formed to the inner housing and is arranged in the 6 o'clock position. The center guide prevents displacement of the vane support 9 relative to the inner housing 13 in a rotation axis direction 20.
  • the rotation axis direction 20 is parallel to the rotation axis 3.
  • FIG. 2 shows an inventive arrangement of the center guide 23.
  • the center guide is now integrated into the retaining projection 19 and prevents displacement of the guide vane carrier 9 relative to the inner housing 13th
  • the retaining projection 19 has a centering projection 24, as in FIG. 3 shown.
  • the centering projection 24 is arranged at the end on the retaining projection 19 and protrudes into a disposed in the inner housing 13 gap.
  • the inner housing 13 has a support projection 26 which bears against the retaining projection 19 in such a way that displacement of the guide blade carrier 9 with respect to the inner housing 13 is prevented.
  • the holding projection 19 has a first abutment surface 27, which bears against the supporting projection 26.
  • the support projection 26 has an inner surface 28 and an outer surface 29 which is arranged in the rotation axis direction 20 in succession. The first contact surface 27 bears against the inner surface 28 and thereby prevents a displacement of the guide vane carrier relative to the inner housing 13.
  • FIG. 3 essentially shows a view of the center guide with a line of sight FIG. 2 left to right.
  • the retaining projection 19 has a second contact surface on, which is arranged in the rotational axis direction 20 behind the first contact surface 27.
  • the second contact surface 30 bears against the outer surface 29 and prevents displacement of the guide blade carrier 9 with respect to the inner housing 13.
  • the gap 25 further includes a circular gap 31.
  • a cylinder 32 is arranged, wherein the cylinder 32 has a cylinder gap 33.
  • the centering projection 24 protrudes into this cylinder gap 33.
  • the circular configuration of the gap 31 and the centering projection of the holding projection 19 arranged therein, which is coupled to the guide blade carrier 9, makes it possible to tilt the guide blade carrier 9 relative to the inner housing 13.
  • a securing element 34 is arranged and prevents the falling out of the cylinder from the gap 31st
  • the fuse element 34 is connected here with suitable screws with the inner housing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP15180035.6A 2015-08-06 2015-08-06 Agencement pour une turbine a vapeur et procédé de fixation associé Withdrawn EP3128134A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15180035.6A EP3128134A1 (fr) 2015-08-06 2015-08-06 Agencement pour une turbine a vapeur et procédé de fixation associé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15180035.6A EP3128134A1 (fr) 2015-08-06 2015-08-06 Agencement pour une turbine a vapeur et procédé de fixation associé

Publications (1)

Publication Number Publication Date
EP3128134A1 true EP3128134A1 (fr) 2017-02-08

Family

ID=53785537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15180035.6A Withdrawn EP3128134A1 (fr) 2015-08-06 2015-08-06 Agencement pour une turbine a vapeur et procédé de fixation associé

Country Status (1)

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EP (1) EP3128134A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3453848A1 (fr) * 2017-09-08 2019-03-13 Siemens Aktiengesellschaft Turbine à vapeur dotée d'une chambre de piquage
CN114508394A (zh) * 2021-12-29 2022-05-17 东方电气集团东方汽轮机有限公司 一种透平抽汽腔室结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4816213A (en) * 1987-08-24 1989-03-28 Westinghouse Electric Corp. Thermal distortion isolation system for turbine blade rings
US20100260599A1 (en) * 2008-03-31 2010-10-14 Mitsubishi Heavy Industries, Ltd. Rotary machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4816213A (en) * 1987-08-24 1989-03-28 Westinghouse Electric Corp. Thermal distortion isolation system for turbine blade rings
US20100260599A1 (en) * 2008-03-31 2010-10-14 Mitsubishi Heavy Industries, Ltd. Rotary machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3453848A1 (fr) * 2017-09-08 2019-03-13 Siemens Aktiengesellschaft Turbine à vapeur dotée d'une chambre de piquage
WO2019048184A1 (fr) * 2017-09-08 2019-03-14 Siemens Aktiengesellschaft Turbine à vapeur à chambre de soutirage
CN111065796A (zh) * 2017-09-08 2020-04-24 西门子股份公司 具有排气腔的汽轮机
CN114508394A (zh) * 2021-12-29 2022-05-17 东方电气集团东方汽轮机有限公司 一种透平抽汽腔室结构
CN114508394B (zh) * 2021-12-29 2023-11-10 东方电气集团东方汽轮机有限公司 一种透平抽汽腔室结构

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