EP3130767A1 - Turbine à vapeur à haute et moyenne pression combinée - Google Patents

Turbine à vapeur à haute et moyenne pression combinée Download PDF

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Publication number
EP3130767A1
EP3130767A1 EP15181030.6A EP15181030A EP3130767A1 EP 3130767 A1 EP3130767 A1 EP 3130767A1 EP 15181030 A EP15181030 A EP 15181030A EP 3130767 A1 EP3130767 A1 EP 3130767A1
Authority
EP
European Patent Office
Prior art keywords
pressure
medium
steam
steam turbine
blading
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Withdrawn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
EP15181030.6A
Other languages
German (de)
English (en)
Inventor
Oliver Myschi
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 EP15181030.6A priority Critical patent/EP3130767A1/fr
Priority to PCT/EP2016/067257 priority patent/WO2017029055A1/fr
Publication of EP3130767A1 publication Critical patent/EP3130767A1/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Withdrawn legal-status Critical Current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
    • F01D25/26—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
    • F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
    • F01D3/02—Machines or engines with axial-thrust balancing effected by working-fluid characterised by having one fluid flow in one axial direction and another fluid flow in the opposite direction
    • 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 steam turbine comprising a rotatably mounted rotor, wherein the rotor has a high pressure blading area comprising a plurality of rows of blades designed for high pressure steam and wherein the rotor further comprises a medium pressure blading area comprising a plurality of rows of blades configured for medium pressure steam further comprising a high pressure inner housing disposed about the high pressure blading area, further comprising a medium pressure inner housing disposed about the medium pressure blading area, further comprising an outer housing disposed about the high pressure inner housing and the intermediate pressure inner housing is.
  • the invention relates to a method for operating a steam turbine with speeds of over 50 Hz.
  • Steam turbines are used to generate electrical energy.
  • steam is generated in a power plant with high temperatures and high pressure and fed to a steam turbine.
  • the thermal energy of the steam is converted into rotational energy of the rotor of the steam turbine and generates electrical energy via a coupling with an electrical generator.
  • the frequencies of the rotor in this case correspond as constant as possible to the respective mains frequency of 50 Hz or 60 Hz.
  • the efficiency of the turbine is improved by the high frequencies and the reduced size.
  • the speed of a medium-pressure turbine section is limited due to the larger volume flows in that the blade heights can not exceed a maximum limit due to the centrifugal forces.
  • the speed of the high-pressure turbine section is limited by the einäusige design but also.
  • a steam turbine comprising a rotatably mounted rotor, wherein the rotor has a high-pressure blading area comprising a plurality of row blades designed for high-pressure steam, and wherein the rotor further comprises a medium-pressure blading area comprising a plurality of rows of blades designed for medium-pressure steam , further comprising a high pressure inner housing disposed about the high pressure blading area. Further comprising a medium-pressure inner housing, which is arranged around the medium-pressure blading region. Further comprising an outer housing which is arranged around the high-pressure inner housing and medium-pressure inner housing, wherein the medium-pressure blading area is designed to be double-flowed.
  • the invention is further achieved by a method for operating a steam turbine with a speed of more than 50 Hz, wherein the steam turbine is formed with a high-pressure and medium-pressure region in a common housing, wherein the medium-pressure region is carried out in two columns.
  • the steam turbine is developed in such a way that it has a high-pressure exhaust steam region, which is designed in such a way that steam flows out of the steam turbine during operation through the high-pressure blading region.
  • the high-pressure blading area is designed for a high-pressure steam whose input has the following values: temperature T of 540 ° C. to 610 ° C. and pressure P of 100 bar to 280 bar.
  • the medium-pressure blading region is designed for a medium-pressure steam having the following values on the input side: temperature T of 540 ° C. to 630 ° C. and pressure P of 30 bar to 60 bar.
  • the figure shows a schematic representation of the steam turbine according to the invention.
  • the figure shows a schematic representation of a steam turbine 1.
  • the steam turbine 1 comprises a rotor 3 rotatably mounted about a rotation axis 2.
  • the rotor 3 comprises a high pressure blading area 5 and a medium pressure blading area 6.
  • the high pressure blading area 5 comprises a high pressure inflow area
  • the high-pressure pressure flow channel 9 comprises high-pressure rotor blades 10 arranged on the rotor 3 and high-pressure stator blades 11 arranged in the high-pressure inner housing 12 (for reasons of clarity, only one was used in each case) High pressure bucket with the reference numeral 10 or 11 provided).
  • a high pressure steam typically having a temperature between 540 ° C and 610 ° C and a pressure between 100bar and 280bar flows.
  • the thermal energy of the high-pressure steam is converted into mechanical energy of the rotor 3.
  • the steam flows from the high-pressure blading region 5 into the high-pressure outflow region 12.
  • the high-pressure steam subsequently flows out of the high-pressure outflow region 12 to a reheater unit (not shown), where it is again heated to a high temperature.
  • the steam flows into a medium-pressure inflow region 13 of the medium-pressure blading region 6.
  • the steam which typically has temperatures between 540 ° C. and 630 ° C. and a pressure between 30 bar and 60 bar, flows into a medium-pressure flow channel 14.
  • the flow channel 14 comprises a first flow 15 and one arranged in the opposite direction second tide 16 on. Both the first flow 15 and the second flow 16 have medium pressure guide vanes and blades 17. For clarity, only one blade is provided with the reference numeral 17 in each case.
  • the blades 17 are disposed on the rotor 3 at the surface.
  • the vanes 19 are arranged on an inner housing 18.
  • the steam flows into the inflow region 13 and thence through both the first flow 15 and the second flow 16.
  • the thermal energy of the steam is converted into rotational energy of the rotor 3.
  • the steam subsequently flows out of the medium-pressure outflow regions 20 into an intermediate space 21 between the outer housing 4 and the inner housings 18 and 11 and from there out of the steam turbine 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP15181030.6A 2015-08-14 2015-08-14 Turbine à vapeur à haute et moyenne pression combinée Withdrawn EP3130767A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15181030.6A EP3130767A1 (fr) 2015-08-14 2015-08-14 Turbine à vapeur à haute et moyenne pression combinée
PCT/EP2016/067257 WO2017029055A1 (fr) 2015-08-14 2016-07-20 Turbine à vapeur combinée à haute et à moyenne pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15181030.6A EP3130767A1 (fr) 2015-08-14 2015-08-14 Turbine à vapeur à haute et moyenne pression combinée

Publications (1)

Publication Number Publication Date
EP3130767A1 true EP3130767A1 (fr) 2017-02-15

Family

ID=53835986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15181030.6A Withdrawn EP3130767A1 (fr) 2015-08-14 2015-08-14 Turbine à vapeur à haute et moyenne pression combinée

Country Status (2)

Country Link
EP (1) EP3130767A1 (fr)
WO (1) WO2017029055A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823891A (en) * 1953-05-20 1958-02-18 Westinghouse Electric Corp Steam turbine
US3107084A (en) * 1962-12-12 1963-10-15 Westinghouse Electric Corp Elastic fluid turbine apparatus
JP2000213302A (ja) * 1999-01-22 2000-08-02 Toshiba Corp 蒸気タ―ビンロ―タ
EP0873466B1 (fr) * 1996-01-11 2002-11-20 Siemens Aktiengesellschaft Arbre de turbine a vapeur a refroidissement interne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823891A (en) * 1953-05-20 1958-02-18 Westinghouse Electric Corp Steam turbine
US3107084A (en) * 1962-12-12 1963-10-15 Westinghouse Electric Corp Elastic fluid turbine apparatus
EP0873466B1 (fr) * 1996-01-11 2002-11-20 Siemens Aktiengesellschaft Arbre de turbine a vapeur a refroidissement interne
JP2000213302A (ja) * 1999-01-22 2000-08-02 Toshiba Corp 蒸気タ―ビンロ―タ

Also Published As

Publication number Publication date
WO2017029055A1 (fr) 2017-02-23

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