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WO2017021067A1 - Conception de turbine dans une zone d'admission de surcharge - Google Patents

Conception de turbine dans une zone d'admission de surcharge Download PDF

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Publication number
WO2017021067A1
WO2017021067A1 PCT/EP2016/065141 EP2016065141W WO2017021067A1 WO 2017021067 A1 WO2017021067 A1 WO 2017021067A1 EP 2016065141 W EP2016065141 W EP 2016065141W WO 2017021067 A1 WO2017021067 A1 WO 2017021067A1
Authority
WO
WIPO (PCT)
Prior art keywords
overload
steam
rotor
shroud
turbomachine
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.)
Ceased
Application number
PCT/EP2016/065141
Other languages
German (de)
English (en)
Inventor
Stefan Brück
Armin De Lazzer
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of WO2017021067A1 publication Critical patent/WO2017021067A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/06—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-inlet-pressure type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type

Definitions

  • the invention relates to a turbomachine, in particular steam turbine, comprising an inflow region, a rotatably mounted rotor, a housing which is arranged around the rotor, wherein between the rotor and the housing, a flow ⁇ channel is formed by the in operation Flow medium flows in a flow direction, wherein the rotor blades and the housing include vanes, wherein the turbomachine comprises an inflow region, wherein the housing has an additional Matterlasteinström Suite which is arranged in the flow direction after the inflow region and formed for the inflow of overload steam into the flow channel is, wherein the guide vanes aufberg ⁇ sen sen.
  • the invention relates to a method for preventing thermal overload in the overload inflow region of a turbomachine.
  • Modern power plants are operated with turbomachines such as steam turbines, which must meet special requirements. Since the operation of fossil fuel power plants requires an increas ⁇ mende overload capability, greater flexibility of such power stations is required.
  • a power plant usually has a steam generator or a steam boiler. As a rule, the power plant operators demand that the pressure in the boiler in overload operation does not rise or only slightly increases. This allows the boiler to be designed cost-effectively to the pressure required in nominal operation. In a pure Gleit horrus american Anlagen the steam boiler, a correspondingly high boiler pressure would be required.
  • the boiler pressure can thus be kept constant.
  • the thermal load on the shaft by other effects may be less favorable ⁇ tig affected. If z. B. the introduction of steam via radial bores constructively realized, the thermal load is also increased.
  • the supplied overload steam is injected radially inwardly into the main flow through the radial bores.
  • the overload steam has a higher temperature than that coming from the entrance of the turbine Steam of the mainstream.
  • the steam does not mix immediately with the vapor of the overload steam inflow but penetrates radially the entire flow path and impinges on the shaft surface.
  • the invention is not limited to overload inflow areas , but can be used anywhere in the flow area. be used machine, not only with the aim of over ⁇ load operation.
  • a turbomachine in particular a steam turbine, comprising an inflow region, a rotatably mounted rotor, a housing which is arranged around the rotor, wherein a flow channel is formed between the rotor and the housing, through which during operation a flow medium flows in a flow direction, wherein the rotor blades and the housing includes vanes, the turbomachine having an inflow region, wherein the housing has an additional Matterlasteinström Suite, wherein the Matterlasteinström Scheme is formed by bores in the inner housing, which is arranged in the flow direction after the inflow and the Inflow of
  • Overload steam is formed in the flow channel, wherein the guide vanes have shrouds, wherein in operation the overload steam is prevented by the shrouds on Aufteffen on the rotor in Matterlasteinström Symposium.
  • the shroud is arranged on the vane tip.
  • Shroud formed substantially to the rotor surface, resulting in a better aerodynamic effect, since the vapor from the main flow and the steam from the overload device can be optimally guided by the shroud.
  • the entire stator blade ring as an integral component, for. B. in the form of two ⁇ he half rings formed.
  • a labyrinth seal is arranged between the shroud and the rotor surface. This then has the pre ⁇ in part, that a vapor which passes between the shroud and the shaft surface is braked, such steam is usually a loss of steam and has a negative effect on the efficiency.
  • the object is achieved by a method for preventing thermal overload in the
  • FIG. 1 is a schematic representation of a Kraftwerksanla ⁇ ge comprising a steam turbine
  • Figure 2 is a schematic representation of a
  • Figure 3 shows an inventive design
  • Figure 4 is a cross-sectional view of the inner housing.
  • FIG. 1 shows a schematic representation of a power plant ⁇ plant comprising a steam turbine 2, which is formed from a high-pressure turbine section 2a, a medium-pressure turbine section 2b, and a low-pressure turbine section 2c. Furthermore, the power plant 1 comprises a steam generator 3. In the steam generator 3 steam is generated, which is generated by the use of fossil fuels. The steam generated in the steam generator flows via a Frischdampflei ⁇ device 4 via a main steam valve 5 in an inflow region 6 of the high-pressure turbine section 2a. The steam then flows to ⁇ closing in a flow channel (not shown in detail in Figure 1) by the high pressure turbine section and flows at the output 7 of the high-pressure turbine section 2a in a cold
  • Reheater line 8 Thereafter, the steam flows to a reheater 9 and is brought there to a higher temperature. Subsequently, the steam flows via a hot reheater line 10 to the inflow region 11 of the medium-pressure turbine section 2b. There relaxes the steam, wherein the thermal energy of the steam is converted into rotational energy of the rotor. Subsequently, the steam flows via the medium-pressure outlet 12 into an overflow line 13 Low pressure turbine part 2c. From there, the steam flows through the output 14 of the low pressure turbine section 2c a con ⁇ capacitor 15 where it is condensed back to water. Subsequently ⁇ chd the water via the pump 16 is again led to the steam generators ger 3 and there converted to steam again.
  • the high-pressure part-turbine 2a has an overload inflow region 17.
  • This Documentlasteinström Scheme 17 is fluidly connected to an overload valve 18.
  • the overload valve 18 is fluidically connected to an overload line 19.
  • the main steam line 4 has a branch 20, wherein a part of the steam in the main steam line 4 for
  • Inflow 6 is deflected and another part is deflected into the overload line 19.
  • FIG. 2 shows a schematic representation of a part of a steam turbine according to the prior art.
  • the steam turbine shown in Figure 2 has a rotor 21 which is rotatably disposed about a rotation axis 22.
  • blades 25 are arranged in so-called blade grooves.
  • the blades 25 have blade feet 26 disposed in the blade grooves 24.
  • an inner housing 27 is arranged to the rotor 21 .
  • a flow channel 28 is formed between the inner housing 27 and the rotor 21, a flow channel 28 is formed.
  • a vapor flows in a flow direction 29 along the flow channel 28.
  • vanes On the inner housing 27 are so-called vanes
  • the vanes 30 have vanes feet
  • the flow channel 28 leads along a Schaufelpfa ⁇ , which is formed between the guide vanes 30 and blades 25.
  • the inflow region is not shown in detail in FIG. 2, in certain operating cases it is necessary to use the Split steam, which is then passed over the main steam line 4 to the overload line 19 and from there into a
  • the overload inflow region 17 has a plurality of bores 40. These holes 40 are arranged in the inner housing. In the figures 2 and 3, the holes 40 are shown in cross section, therefore, only one bore 40 can be seen.
  • the inner housing 27 is formed around the rotation axis 22. Therefore, the inner housing 27 has a circumferential direction, which is not shown in Figures 2 and 3.
  • FIG. 4 shows a cross-sectional view of the inner housing 27, the illustration of the inner housing 27 showing a vertical section through the axis of rotation 22.
  • the circumferential direction 41 of the inner housing 27 the circumferential direction 41 pointing around the axis of rotation 22, bores 40 are arranged. These holes 40 may be arranged at equidistant intervals along the circumferential direction 41.
  • the overload steam comes from the overload line 19 in the flow channel 28.
  • the overload steam 32 flows more or less in a radial direction 33 in the direction of the rotor surface 23.
  • the Ro ⁇ torober materials 23 is thermally heavily loaded. It is therefore common in the art, in the field of
  • Inflow region 17, which is charac ⁇ characterized by a distance between a first blade 34 and a second blade 35, to arrange relief grooves 36.
  • FIG. 3 shows an arrangement according to the invention
  • the shroud 37 is materially connected to the vane 30.
  • the fluid machine according to Figure 3 is used to prevent egg ⁇ ner thermal overload in Matterlasteinström Scheme 17 egg ner flow machine, used in particular steam turbine, the air flowing into the Matterlasteinström Scheme 17 overload steam 32 through a at the tip of the vane 38 on impact with the rotor surface 23 in the

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne une turbomachine, en particulier une turbine à vapeur (2) présentant une zone d'admission de surcharge (17) qui est conçue pour l'admission de vapeur de surcharge. Selon l'invention, les bandages (37) font obstacle à la vapeur de surcharge arrivant sur la surface rotorique (23) grâce à une configuration spéciale de ceux-ci.
PCT/EP2016/065141 2015-08-06 2016-06-29 Conception de turbine dans une zone d'admission de surcharge Ceased WO2017021067A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15180044.8A EP3128135A1 (fr) 2015-08-06 2015-08-06 Conception de turbine dans une zone d'entrée de surcharge
EP15180044.8 2015-08-06

Publications (1)

Publication Number Publication Date
WO2017021067A1 true WO2017021067A1 (fr) 2017-02-09

Family

ID=53785540

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/065141 Ceased WO2017021067A1 (fr) 2015-08-06 2016-06-29 Conception de turbine dans une zone d'admission de surcharge

Country Status (2)

Country Link
EP (1) EP3128135A1 (fr)
WO (1) WO2017021067A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4403751A1 (fr) * 2023-01-20 2024-07-24 Wise Open Foundation Système et procédé de génération d'énergie

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841205A (ja) * 1981-09-04 1983-03-10 Hitachi Ltd 混圧蒸気タ−ビン
JPS58197401A (ja) * 1982-05-14 1983-11-17 Toshiba Corp 地熱タ−ビン
EP1298297A2 (fr) * 2001-10-01 2003-04-02 Mitsubishi Heavy Industries, Ltd. Dispositif de régulation de pression de la vapeur de refroidissement pour turbines à gaz
US20090226311A1 (en) * 2008-03-10 2009-09-10 General Electric Company Interface member for a power plant
EP2546476A1 (fr) * 2011-07-14 2013-01-16 Siemens Aktiengesellschaft Installation de turbines à vapeur et procédé pour opérer l'installation de turbines à vapeur
EP2667027A1 (fr) * 2012-05-24 2013-11-27 Alstom Technology Ltd Installation solaire à cycle de Rankine à vapeur et procédé de fonctionnement de ladite installation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841205A (ja) * 1981-09-04 1983-03-10 Hitachi Ltd 混圧蒸気タ−ビン
JPS58197401A (ja) * 1982-05-14 1983-11-17 Toshiba Corp 地熱タ−ビン
EP1298297A2 (fr) * 2001-10-01 2003-04-02 Mitsubishi Heavy Industries, Ltd. Dispositif de régulation de pression de la vapeur de refroidissement pour turbines à gaz
US20090226311A1 (en) * 2008-03-10 2009-09-10 General Electric Company Interface member for a power plant
EP2546476A1 (fr) * 2011-07-14 2013-01-16 Siemens Aktiengesellschaft Installation de turbines à vapeur et procédé pour opérer l'installation de turbines à vapeur
EP2667027A1 (fr) * 2012-05-24 2013-11-27 Alstom Technology Ltd Installation solaire à cycle de Rankine à vapeur et procédé de fonctionnement de ladite installation

Also Published As

Publication number Publication date
EP3128135A1 (fr) 2017-02-08

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