US20150167468A1 - Low-pressure turbine - Google Patents

Low-pressure turbine Download PDF

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Publication number
US20150167468A1
US20150167468A1 US14/414,112 US201314414112A US2015167468A1 US 20150167468 A1 US20150167468 A1 US 20150167468A1 US 201314414112 A US201314414112 A US 201314414112A US 2015167468 A1 US2015167468 A1 US 2015167468A1
Authority
US
United States
Prior art keywords
flow
low
exhaust steam
pressure
pressure partial
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.)
Abandoned
Application number
US14/414,112
Other languages
English (en)
Inventor
Patrick Bison
Sebastian Voss
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
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BISON, PATRICK, VOSS, SEBASTIAN
Publication of US20150167468A1 publication Critical patent/US20150167468A1/en
Abandoned 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
    • 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
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/30—Exhaust heads, chambers, or the like
    • 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
    • F01K7/30—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 the turbines using exhaust steam only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/30—Application in turbines
    • F05B2220/301—Application in turbines in steam turbines

Definitions

  • the invention relates to a low-pressure turbine comprising a first flow and a second flow and also a rotor and an inner housing arranged around the rotor and an outer housing arranged around the inner housing.
  • the invention also relates to a method for operating a low-pressure partial turbine, the low-pressure partial turbine having a double-flow configuration.
  • Steam turbines are usually divided into partial turbines.
  • a steam turbine used in local power supply is divided into a high-pressure partial turbine, an intermediate-pressure partial turbine and a low-pressure partial turbine.
  • Each of these individual partial turbines mentioned above is accommodated in each case in an individual housing.
  • designs in which the high-pressure part and the intermediate-pressure part are accommodated in a common housing are known.
  • Designs in which the intermediate-pressure part and the low-pressure part are arranged in a common housing are similarly known.
  • An axial arrangement of the individual partial turbines in succession requires a comparatively large amount of installation space.
  • the low-pressure partial turbines generally have a two-flow configuration. This means that the inflowing steam flows away both in one direction and also axially in the opposite direction. Low-pressure partial turbines are configured in such a manner that the exhaust steam in one flow and the exhaust steam in the second flow are carried away laterally. This is also known under the term Single Side Exhaust or Double Side Exhaust. A further embodiment provides that the low-pressure exhaust steam is carried away downward (what is termed Down Exhaust).
  • An alternative embodiment would be a box-like construction of the inner housing outer wall, such that the inner housing could be positioned on the base in the thus formed chamber.
  • the FIGURE shows a schematic cross-sectional view of a low pressure partial turbine.
  • the FIGURE shows a low-pressure partial turbine 1 , which has a two-flow configuration. This means that the low-pressure partial turbine 1 has a first flow 2 and a second flow 3 . Live steam flows into the low-pressure partial turbine 1 via an admission connector 4 .
  • a flow path 8 is formed between a rotor 6 mounted rotatably about an axis of rotation 5 and an inner housing 7 arranged around the rotor 6 .
  • An outer housing 9 is arranged around the inner housing 7 .
  • the rotor 6 is formed with individual rotor blades 10 .
  • Only one rotor blade is provided with the reference sign 10 .
  • Guide vanes 11 arranged on the inner housing 7 are arranged between the individual rotor blade stages. For reasons of clarity, only one guide vane is provided with the reference sign 11 .
  • Live steam flows in via the admission connector 4 and is expanded in the first flow 2 to the right, as seen in the plane of the drawing, and in the second flow 3 to the left, as seen in the plane of the drawing.
  • the steam is expanded in the flow path 8 and is cooled in the process.
  • the low-pressure exhaust steam 12 is deflected in the second flow 3 through the inner housing 7 .
  • the outer housing 9 has deflection elements 13 , which deflect the steam again in the axial direction to the first flow 2 .
  • An annular space 14 through which the low-pressure exhaust steam 12 of the second flow 3 flows, is formed between the outer housing 9 and the inner housing 7 .
  • the low-pressure exhaust steam 16 of the first flow 2 is mixed with the low-pressure exhaust steam of the second flow 12 in a mixing zone 15 .
  • the velocity of the low-pressure exhaust steam 16 of the first flow 2 is substantially the same as the velocity of the low-pressure exhaust steam 12 of the second flow 3 in the mixing zone 15 .
  • a base for a bearing 18 on which the rotor 6 is mounted, is arranged in the exhaust steam chamber 17 .
  • the site of the bearing 18 can be arranged in the steam chamber or, in alternative embodiments, can be positioned as a separate encapsulated base outside the steam chamber.
  • the low-pressure partial turbine ( 1 ) has a double-flow configuration and the exhaust steam from the first flow ( 2 ) is deflected in the direction of the exhaust steam of the second flow ( 3 ).
  • the direction of the exhaust steam from the first flow ( 2 ) and the direction of the exhaust steam from the second flow ( 3 ) are oriented substantially parallel to the axis of rotation ( 5 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Control Of Turbines (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US14/414,112 2012-07-27 2013-07-23 Low-pressure turbine Abandoned US20150167468A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12178221.3 2012-07-27
EP12178221.3A EP2690253A1 (de) 2012-07-27 2012-07-27 Niederdruck-Turbine
PCT/EP2013/065466 WO2014016272A1 (de) 2012-07-27 2013-07-23 Niederdruck-turbine

Publications (1)

Publication Number Publication Date
US20150167468A1 true US20150167468A1 (en) 2015-06-18

Family

ID=48916005

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/414,112 Abandoned US20150167468A1 (en) 2012-07-27 2013-07-23 Low-pressure turbine

Country Status (11)

Country Link
US (1) US20150167468A1 (es)
EP (2) EP2690253A1 (es)
JP (1) JP6005861B2 (es)
KR (1) KR20150036154A (es)
CN (1) CN104508243B (es)
BR (1) BR112015001665A2 (es)
ES (1) ES2619602T3 (es)
IN (1) IN2014DN10803A (es)
PL (1) PL2877699T3 (es)
RU (1) RU2015106499A (es)
WO (1) WO2014016272A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11149588B2 (en) 2016-10-31 2021-10-19 Mitsubishi Heavy Industries, Ltd. Exhaust chamber of steam turbine, flow guide for steam turbine exhaust chamber, and steam turbine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016118296A1 (de) 2016-09-28 2018-03-29 Man Diesel & Turbo Se Dampfturbine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394125A (en) * 1943-11-01 1946-02-05 Gen Electric Tandem compound elastic fluid turbine arrangement

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1405090A (en) * 1917-08-24 1922-01-31 British Westinghouse Electric Semidouble-flow steam turbine
DE1812487A1 (de) * 1968-12-03 1970-08-13 Siemens Ag Gehaeuseanordnung fuer Niederdruckteile von Dampfturbinen in vollstaendig geschweisster mehrschaliger Bauweise
CH564680A5 (es) * 1973-10-16 1975-07-31 Bbc Brown Boveri & Cie
JPS542B2 (es) * 1975-02-26 1979-01-05
US4102598A (en) * 1975-11-11 1978-07-25 Westinghouse Electric Corp. Single case low pressure turbine
JPS5846807U (ja) * 1981-09-25 1983-03-29 株式会社東芝 蒸気タ−ビンケ−シング
US4557113A (en) * 1984-06-15 1985-12-10 Westinghouse Electric Corp. Single low pressure turbine with zoned condenser
CN1038492A (zh) * 1988-06-08 1990-01-03 涡轮机制造生产联合企业“列宁格勒金属厂” 汽轮机汽缸反推力矩抵消法
DE4422700A1 (de) * 1994-06-29 1996-01-04 Abb Management Ag Diffusor für Turbomaschine
EP2187004A1 (de) * 2008-11-13 2010-05-19 Siemens Aktiengesellschaft Innengehäuse für eine Strömungsmaschine
EP2295725A1 (de) * 2009-08-13 2011-03-16 Siemens Aktiengesellschaft Ströhmungsmaschine mit Dampfentnahme

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394125A (en) * 1943-11-01 1946-02-05 Gen Electric Tandem compound elastic fluid turbine arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11149588B2 (en) 2016-10-31 2021-10-19 Mitsubishi Heavy Industries, Ltd. Exhaust chamber of steam turbine, flow guide for steam turbine exhaust chamber, and steam turbine

Also Published As

Publication number Publication date
EP2690253A1 (de) 2014-01-29
PL2877699T3 (pl) 2017-06-30
WO2014016272A1 (de) 2014-01-30
JP2015523496A (ja) 2015-08-13
IN2014DN10803A (es) 2015-09-04
EP2877699A1 (de) 2015-06-03
JP6005861B2 (ja) 2016-10-12
RU2015106499A (ru) 2016-09-20
CN104508243B (zh) 2016-05-11
ES2619602T3 (es) 2017-06-26
EP2877699B1 (de) 2016-12-14
KR20150036154A (ko) 2015-04-07
BR112015001665A2 (pt) 2017-07-04
CN104508243A (zh) 2015-04-08

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BISON, PATRICK;VOSS, SEBASTIAN;REEL/FRAME:034678/0289

Effective date: 20141216

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION