[go: up one dir, main page]

WO1998015719A1 - Turbine a vapeur - Google Patents

Turbine a vapeur Download PDF

Info

Publication number
WO1998015719A1
WO1998015719A1 PCT/EP1997/005491 EP9705491W WO9815719A1 WO 1998015719 A1 WO1998015719 A1 WO 1998015719A1 EP 9705491 W EP9705491 W EP 9705491W WO 9815719 A1 WO9815719 A1 WO 9815719A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam turbine
steam
condenser
low
turbine
Prior art date
Application number
PCT/EP1997/005491
Other languages
German (de)
English (en)
Inventor
Armin Drosdziok
Andreas FELDMÜLLER
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1998015719A1 publication Critical patent/WO1998015719A1/fr

Links

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
    • F01D25/30—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
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines

Definitions

  • the invention relates to a steam turbine system having a low- pressure portion.
  • a steam turbine combined with a condenser to make a steam turbine system is disposed in a machine house or turbine hall.
  • the condenser may be connected on the downstream side axially or radially to the steam turbine. In an axial configuration, the condenser is placed longitudinally of the turbine shaft, while conversely in a radial configuration it is mounted in a position oriented at right angles to the longitudinal direction of the turbine shaft.
  • the condenser In order to utilize gravity to reinforce mass transport from the turbine to the condenser in the radial mode of construction, the condenser is typically disposed below the steam turbine.
  • Such a construction of the steam turbine which is also called a high construction, entails considerable structural and engineering expense, especially because of the large number of structural components.
  • the expense of assembly in setting up such a steam turbine system is particularly high, especially since the steam turbine located above the condenser requires an expensive and complicated supporting construction.
  • a steam turbine comprising a low-pressure portion having an outer housing, the outer housing having an outward-bulging side surface defining a compensation chamber, and the outer housing having a side opening opposite the side surface for connection of a condenser.
  • the invention takes as its point of departure the concept that steam leaving the steam turbine and to be supplied to the condenser should be suitably guided, for a low construction of the steam turbine.
  • a space suitable for that purpose should be available inside the steam turbine housing.
  • the steam that has collected there should be suitably deflected for delivery to the condenser.
  • a bled steam line passed through the outward-bulging side surface of the low-pressure portion. This is done in order to make it possible to draw bled steam from the steam turbine for feeding a component of a steam power plant, such as a preheater unit.
  • Fig. 1 is a diagrammatic, top-plan view of one exemplary embodiment of a steam turbine system according to the inven ion;
  • Fig. 2 is a side-elevational view of the steam turbine system of Fig. 1, as seen along a line II-II of Fig. 1, in the direction of the arrows;
  • Fig. 3 is a longitudinal-sectional view of a low-pressure portion of a steam turbine; and Fig. 4 is a cross-sectional view of the low-pressure portion of Fig. 3.
  • a steam turbine system 1 which includes a steam turbine 2 with a high-pressure and medium-pressure portion 2a and a low-pressure portion 2b, to which a condenser 4 is connected radially on the downstream side.
  • a preheater unit 6 is disposed on a side of the steam turbine 2 facing the condenser 4.
  • a generator 8 which is located m the vicinity of the steam turbine 2 can be driven through a steam turbine shaft 7.
  • Both the high-pressure and medium-pressure portion 2a and the low-pressure portion 2b of the steam turbine 2 as well as the condenser 4 and the preheater unit 6 and the generator 8 are each constructed as a module and are moreover disposed flush with the ground.
  • the term "module” should be understood m this case to mean a connectable, transportable component that can be pre-assembled.
  • Each of the aforementioned modules is mounted on a sledlike structure or skid m a non-illustrated manner and can thus be shifted about especially easily.
  • the steam turbine system 1 is part of a non-illustrated coal- fired steam power plant having a high-pressure preheater, m the form of a module 9, that is likewise disposed flush with the ground on the side of the steam turbine 2 facing the condenser 4.
  • the steam turbine system 1 is connected to a once-through steam generator of the steam power plant m a non-illustrated manner.
  • One such once-through steam generator is described, for instance, m co-pendmg U.S. Patent Application Serial No. (Attorney's Docket No. 5796) entitled "Modular Boiler", filed concurrently with the instant application and having the same assignee.
  • the steam turbine 2, the condenser 4, the preheater unit 6, the generator 8 and the module 9 are disposed in a common power house or turbine hall 10.
  • the generator 8 is connected through a supply line system 11, into which a switch system 12 is incorporated, to a generator transformer 13 which is disposed outside the turbine hall 10 and serves to transform electrical voltage furnished by the generator 8 to a higher level .
  • Fig. 2 is a side view of the turbine hall 10, showing the disposition of the steam turbine 2, the condenser 4 and the preheater unit 6 flush with the floor.
  • the condenser 4 is radially connected to the steam turbine 2 on the downstream side.
  • the condenser 4, which is constructed as a module, includes a first condenser element 4a and a second condenser element 4b located above the first. An especially space- saving, compact construction is thus achieved.
  • the preheater unit 6, which is also constructed as a module, includes a number of preheater elements 15 disposed in a common support stand or heater rig 14. Each preheater element 15 can be acted upon with bled steam A from the steam turbine 2 through a bled steam duct system 16. The pressure and temperature of the bled steam A are functions of the location, wherever it is, at which the steam turbine 2 is bled. Each preheater element 15 is constructed for a specific pressure range of the bled steam A. Locating the preheater elements 15 in the common heater rig 14 makes it possible to prefabricate the preheater unit 6 as a module. This makes the effort and expense of on-site assembly especially low. In order to facilitate assembly of the steam turbine system 1 even further, the module 9 is also mounted on a sled structure or skid.
  • the low- pressure portion 2b of the steam turbine 2 is constructed in dual-flow fashion.
  • An outer housing 20 of the low-pressure portion 2b encloses an inner housing 22, in which the turbine shaft 7 is disposed with a set of low-pressure blades 24.
  • the low-pressure portion 2b has a steam inlet region 26, to which steam from the high-pressure and medium-pressure portion 2a of the steam turbine 2 can be delivered through an overflow line 28. Steam that has expanded, producing work, in the low-pressure blades 24 of the low-pressure portion 2b, can be removed through a steam outlet region 30 and a number of steam passageway surfaces 32.
  • one side surface 38 of the outer housing 20 of the low-pressure portion 2b is curved outward, as is shown in Fig. 4.
  • the steam entering the compensation chamber 36 can thus be deflected by simple provisions and then delivered to the condenser 4 with only especially slight flow losses.
  • the outer housing 20 of the low-pressure portion 2b has a side opening 40 opposite the outward-curved side surface 38.
  • a bled steam adapter or connector 42 is provided in order to supply bled steam A to the bled steam line system 16. This element 42 is passed laterally through the inner housing 22. Alternatively, however, a vertically guided, bled steam adapter which is bent at an angle can be provided. The bled steam adapter 42 is connected to a bled steam line 46, which is passed through the outward-facing side surface 38 and which can be connected to the bled steam system 16.
  • the compensation chamber 36 formed by the outward-bulging side surface 38 assures that the condenser 4 can be radially laterally connected on the downstream side to the low- pressure portion 2b of the steam turbine 2 by especially simple provisions. This makes it possible to set up both the steam turbine 2 and the condenser 4 flush to the ground.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Cette turbine à vapeur comprend une portion basse pression, laquelle peut être montée à fleur de sol ou dans une construction basse et reliée à un condenseur pouvant également être placé à fleur de sol. La gaine extérieure de cette turbine présente une surface latérale saillant vers l'extérieur, afin de former une chambre de compensation, ainsi qu'une ouverture latérale, située à l'opposé de la surface latérale, aux fins de raccordement d'un condenseur.
PCT/EP1997/005491 1996-10-08 1997-10-07 Turbine a vapeur WO1998015719A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72718796A 1996-10-08 1996-10-08
US08/727,187 1996-10-08

Publications (1)

Publication Number Publication Date
WO1998015719A1 true WO1998015719A1 (fr) 1998-04-16

Family

ID=24921684

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/005491 WO1998015719A1 (fr) 1996-10-08 1997-10-07 Turbine a vapeur

Country Status (2)

Country Link
TW (1) TW355727B (fr)
WO (1) WO1998015719A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1405565A (en) * 1916-10-04 1922-02-07 British Westinghouse Electric Steam turbine
US1548608A (en) * 1923-07-30 1925-08-04 Gen Electric Elastic-fluid turbine
DE3430769A1 (de) * 1984-08-17 1986-03-06 Proizvodstvennoe ob"edinenie turbostroenija, Leningradskij metalličeskij zavod, Leningrad Niederdruckzylinder einer dampfturbine
US4866941A (en) * 1988-07-05 1989-09-19 Westinghouse Electric Corp. Single condenser arrangement for side exhaust turbine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1405565A (en) * 1916-10-04 1922-02-07 British Westinghouse Electric Steam turbine
US1548608A (en) * 1923-07-30 1925-08-04 Gen Electric Elastic-fluid turbine
DE3430769A1 (de) * 1984-08-17 1986-03-06 Proizvodstvennoe ob"edinenie turbostroenija, Leningradskij metalličeskij zavod, Leningrad Niederdruckzylinder einer dampfturbine
US4866941A (en) * 1988-07-05 1989-09-19 Westinghouse Electric Corp. Single condenser arrangement for side exhaust turbine

Also Published As

Publication number Publication date
TW355727B (en) 1999-04-11

Similar Documents

Publication Publication Date Title
US6598399B2 (en) Integrated power plant and method of operating such an integrated power plant
US10788267B2 (en) Condenser system, and condensate vessel assembly for power plant
RU2208172C2 (ru) Парогенератор, в частности котел-утилизатор
US3769795A (en) Multipressure steam system for unfired combined cycle powerplant
US20120037097A1 (en) High efficiency feedwater heater
JP2008280974A (ja) 低圧蒸気回収タービン発電機
US6029454A (en) Steam-turbine plant
US20020081191A1 (en) Steam turbine and method of feeding bypass steam
US6101982A (en) Method and apparatus for preheating the fuel for a firing plant
KR100439464B1 (ko) 다단압력식폐열보일러와그운전방법
US7147427B1 (en) Utilization of spillover steam from a high pressure steam turbine as sealing steam
JPH0392508A (ja) 蒸気動力ステーションの始動運転のための蒸気及び動力の形成方法及びその設備
WO1998015719A1 (fr) Turbine a vapeur
WO1998015720A1 (fr) Systeme de turbine a vapeur
EP3445954A1 (fr) Centrale électrique à cycle combiné comportant une pompe de recirculation de condensat utilisant l'effet venturi
WO1998015777A1 (fr) Centrale thermique a vapeur
US20010031200A1 (en) Steam turbine having an exhaust-steam casing
WO1998015778A1 (fr) Circuit d'eau d'alimentation et d'eau condensee destine a une centrale thermique a vapeur, et centrale thermique comprenant un tel circuit
JPS59105907A (ja) 飽和蒸気タ−ビン装置
WO1998016724A1 (fr) Turbine a vapeur et centrale a vapeur dotee de cette turbine a vapeur
WO1998015776A1 (fr) Prechauffeur destine a un systeme de turbine a vapeur
WO1998015718A1 (fr) Turbine a vapeur
WO1998036217A1 (fr) Centrale thermique alimentee au charbon
RU2094617C1 (ru) Паротурбинный агрегат с конденсационной установкой
US5519998A (en) Apparatus for introducing feed water into a combined-cycle power station

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BR CA CN ID JP KR KZ MX RU TR UA US VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: CA

122 Ep: pct application non-entry in european phase