EP2877699B1 - Turbine à basse pression - Google Patents

Turbine à basse pression Download PDF

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Publication number
EP2877699B1
EP2877699B1 EP13745005.2A EP13745005A EP2877699B1 EP 2877699 B1 EP2877699 B1 EP 2877699B1 EP 13745005 A EP13745005 A EP 13745005A EP 2877699 B1 EP2877699 B1 EP 2877699B1
Authority
EP
European Patent Office
Prior art keywords
low
flow
exhaust steam
pressure
steam
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.)
Not-in-force
Application number
EP13745005.2A
Other languages
German (de)
English (en)
Other versions
EP2877699A1 (fr
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
Priority to EP13745005.2A priority Critical patent/EP2877699B1/fr
Priority to PL13745005T priority patent/PL2877699T3/pl
Publication of EP2877699A1 publication Critical patent/EP2877699A1/fr
Application granted granted Critical
Publication of EP2877699B1 publication Critical patent/EP2877699B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 flood and a second flood and a rotor and an inner housing arranged around the rotor and an outer housing arranged around the inner housing.
  • the invention relates to a method for operating a low-pressure turbine part, wherein the low-pressure turbine part is performed double-flow.
  • Steam turbines are usually divided into sub-turbines.
  • a steam turbine that is used in the municipal energy supply, divided into a high-pressure turbine section, medium-pressure turbine section and low-pressure turbine section.
  • Each of these individual aforementioned sub-turbines is housed in a single housing each.
  • construction methods are known in which the high-pressure and medium-pressure parts are accommodated in a common housing.
  • constructions are known in which the medium-pressure part and the low-pressure part are arranged in a common housing.
  • An axial arrangement of the individual turbine parts in a row requires a comparatively large amount of installation space.
  • the low-pressure turbine sections are usually designed with two columns. This means that the incoming steam flows off both in one direction and axially in the opposite direction. Low-pressure turbine sections are designed such that the exhaust steam in the one flood and the exhaust steam in the second flood are discharged 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 discharged downwards (so-called down exhaust). As a rule, this leads to an increased space requirement, since such executed low-pressure turbine sections must be constructed either very wide or very high.
  • the piping is concentrated on one side and could thus lead to space problems. It would be desirable to have a narrow engine house in which the turbine parts can be arranged. Furthermore, it is desirable to be able to implement a well-structured piping.
  • the document DE 1812487 A1 discloses a low pressure turbine part having a first flood and a second flood.
  • the object of the invention is to provide a low-pressure turbine part, which requires a smaller footprint.
  • the invention is based on the aspect that a Abdampe arrangement the low-pressure exhaust steam leads laterally or down to a huge amount of space, which can be eliminated by the low-pressure exhaust steam is guided so that it is axially discharged.
  • the invention proposes to form the outer housing such that the Abdampfraum the second flood is designed such that the steam is deflected in the same direction as the exhaust steam of the first flood. This means that the low-pressure Abdampf the second flood is redirected in the direction of the low-pressure Abdampfes the first flood.
  • annular space is thus formed between the inner housing and the outer housing, through which a
  • Low-pressure exhaust steam of the second flood flows and mixes with the low-pressure exhaust steam of the first flood on the output side.
  • Alternative embodiment would be a box-shaped construction of the inner housing outer wall, so that the inner housing could be placed in the resulting space on the foundation.
  • a low-pressure turbine part 1 is shown, which is designed with two columns. This means that the low-pressure turbine part 1 has a first flood 2 and a second flood 3. Fresh steam flows into the low-pressure turbine section 1 via an inflow pipe 4.
  • a flow path 8 is formed between a rotor 6 rotatably mounted about a rotation axis 5 and an inner housing 7 arranged around the rotor 6.
  • the rotor 6 is formed with individual blades 10. For the sake of clarity, only one blade is provided with the reference numeral 10. Between the individual blade stages arranged on the inner housing 7 vanes 11 are arranged. For the sake of clarity only one vane provided with the reference numeral 11.
  • the low-pressure exhaust steam 12 is deflected in the second flood 3 through the inner housing 7.
  • the outer housing 9 has for this purpose deflecting elements 13, which deflect the steam again in the axial direction to the first flood 2.
  • an annular space 14 is formed through which the low-pressure exhaust steam 12 of the second flood 3 flows.
  • the low-pressure exhaust steam 16 of the first flow 2 is mixed with the low-pressure exhaust steam of the second flow 12. It is important to ensure that in the mixing zone 15, the speeds of the low-pressure exhaust steam 16 of the first tide 2 is substantially equal to the speed of the low-pressure exhaust steam 12 of the second tide third
  • the low-pressure turbine part (1) is designed double-flow and the exhaust steam from the first flood (2) is deflected in the direction of the exhaust steam of the second flood (3).
  • the direction of the exhaust steam from the first flood (2) and the direction of the exhaust steam from the second flood (3) is directed substantially parallel to the axis of rotation (5).

Claims (5)

  1. Sous-turbine ( 1 ) à basse pression comprenant un premier flux ( 2 ) et un deuxième flux ( 3 ), ainsi qu'un rotor ( 6 ) monté tournant autour d'un axe ( 5 ) de rotation et une carcasse ( 7 ) intérieure montée autour du rotor ( 6 ) et une carcasse ( 9 ) extérieure montée autour de la carcasse ( 7 ) intérieure,
    la sous-turbine ( 1 ) à basse pression étant constituée de manière à ce qu'une vapeur sèche d'échappement( ( 16 ) du premier flux ( 2 ), passant en fonctionnement dans la sous-turbine à basse pression, passe sensiblement dans la même direction que la vapeur ( 12 ) d'échappement du deuxième flux ( 3 ),
    la sous-turbine ( 1 ) à basse pression étant réalisée à double flux et la vapeur d'échappement du premier flux ( 2 ) étant déviée dans la direction de la vapeur d'échappement du deuxième flux ( 3 ),
    caractérisée en ce que
    la direction de la vapeur d'échappement du premier flux ( 2 ) et la direction de la vapeur d'échappement du deuxième flux ( 3 ) sont sensiblement parallèles à l'axe ( 5 ) de rotation.
  2. Sous-turbine ( 1 ) suivant la revendication 1,
    dans laquelle la carcasse ( 9 ) extérieure a un espace de recyclage de la vapeur pour recycler la vapeur à l'espace de vapeur d'échappement du deuxième flux ( 3 ).
  3. Sous-turbine ( 1 ) suivant les revendications 1 ou 2, comprenant un espace ( 14 ) annulaire disposé entre la carcasse ( 7 ) intérieure et la carcasse ( 9 ) extérieure.
  4. Sous-turbine ( 1 ) suivant les revendications 1, 2 ou 3, dans laquelle la déviation s'effectue dans la carcasse ( 9 ) extérieure.
  5. Sous-turbine ( 1 ) suivant l'une des revendications précédentes,
    dans laquelle la vapeur d'échappement du premier flux ( 2 ) et du deuxième flux ( 3 ) sont condensées dans un condenseur.
EP13745005.2A 2012-07-27 2013-07-23 Turbine à basse pression Not-in-force EP2877699B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13745005.2A EP2877699B1 (fr) 2012-07-27 2013-07-23 Turbine à basse pression
PL13745005T PL2877699T3 (pl) 2012-07-27 2013-07-23 Turbina niskociśnieniowa

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12178221.3A EP2690253A1 (fr) 2012-07-27 2012-07-27 Turbine à basse pression
PCT/EP2013/065466 WO2014016272A1 (fr) 2012-07-27 2013-07-23 Turbine à basse pression
EP13745005.2A EP2877699B1 (fr) 2012-07-27 2013-07-23 Turbine à basse pression

Publications (2)

Publication Number Publication Date
EP2877699A1 EP2877699A1 (fr) 2015-06-03
EP2877699B1 true EP2877699B1 (fr) 2016-12-14

Family

ID=48916005

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12178221.3A Withdrawn EP2690253A1 (fr) 2012-07-27 2012-07-27 Turbine à basse pression
EP13745005.2A Not-in-force EP2877699B1 (fr) 2012-07-27 2013-07-23 Turbine à basse pression

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12178221.3A Withdrawn EP2690253A1 (fr) 2012-07-27 2012-07-27 Turbine à basse pression

Country Status (11)

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

Families Citing this family (2)

* 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
JP6632510B2 (ja) 2016-10-31 2020-01-22 三菱重工業株式会社 蒸気タービンの排気室、蒸気タービン排気室用のフローガイド、及び、蒸気タービン

Family Cites Families (12)

* 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
US2394125A (en) * 1943-11-01 1946-02-05 Gen Electric Tandem compound elastic fluid turbine arrangement
DE1812487A1 (de) * 1968-12-03 1970-08-13 Siemens Ag Gehaeuseanordnung fuer Niederdruckteile von Dampfturbinen in vollstaendig geschweisster mehrschaliger Bauweise
CH564680A5 (fr) * 1973-10-16 1975-07-31 Bbc Brown Boveri & Cie
JPS542B2 (fr) * 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 (fr) * 2008-11-13 2010-05-19 Siemens Aktiengesellschaft Boîtier intérieur pour une turbomachine
EP2295725A1 (fr) * 2009-08-13 2011-03-16 Siemens Aktiengesellschaft Machine d'écoulement dotée d'une sortie de vapeur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN104508243B (zh) 2016-05-11
PL2877699T3 (pl) 2017-06-30
BR112015001665A2 (pt) 2017-07-04
EP2690253A1 (fr) 2014-01-29
ES2619602T3 (es) 2017-06-26
WO2014016272A1 (fr) 2014-01-30
RU2015106499A (ru) 2016-09-20
JP6005861B2 (ja) 2016-10-12
CN104508243A (zh) 2015-04-08
IN2014DN10803A (fr) 2015-09-04
KR20150036154A (ko) 2015-04-07
JP2015523496A (ja) 2015-08-13
US20150167468A1 (en) 2015-06-18
EP2877699A1 (fr) 2015-06-03

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