EP2876266A1 - Agencement pour le prélèvement de vapeur hors d'une turbine à vapeur - Google Patents

Agencement pour le prélèvement de vapeur hors d'une turbine à vapeur Download PDF

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Publication number
EP2876266A1
EP2876266A1 EP13193757.5A EP13193757A EP2876266A1 EP 2876266 A1 EP2876266 A1 EP 2876266A1 EP 13193757 A EP13193757 A EP 13193757A EP 2876266 A1 EP2876266 A1 EP 2876266A1
Authority
EP
European Patent Office
Prior art keywords
steam
outer tube
recess
inner tube
steam turbine
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Withdrawn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
EP13193757.5A
Other languages
German (de)
English (en)
Inventor
Ulrich Beul
Dirk Huckriede
Mario Koebe
Sandra Obert
Dirk Pfaller
Andreas Stiehm
Sebastian Zahn
Gerta Zimmer
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 EP13193757.5A priority Critical patent/EP2876266A1/fr
Priority to PCT/EP2014/070474 priority patent/WO2015074789A1/fr
Publication of EP2876266A1 publication Critical patent/EP2876266A1/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Withdrawn legal-status Critical Current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
    • 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—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 extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/345—Control or safety-means particular thereto

Definitions

  • Thermal power plants often use combined heat and power to better utilize energy.
  • the steam is usually tapped before its complete relaxation in the steam turbine and passed to a heat exchanger in which the heat is transferred to the district heating network. Since the required district heating capacity and the turbine power change over a wide range, a control concept is energetically advantageous.
  • a damper is often used in an overflow to control the pressure at the taps. This should protect the steam turbine and provide the required amount of heat for the district heating network.
  • a stowage flap can lead to considerable effects wheel disadvantages. It is essential here that the steam which continues to flow in the turbine is frequently throttled with the stowage flap.
  • the damper and the control are technically complex.
  • the object of the invention is to provide an arrangement with which steam in the required pressure level can be easily provided, with an energetically favorable operation is to be achieved.
  • an arrangement for the removal of steam from a steam turbine, in particular a medium-pressure turbine, with an inner tube and an outer tube, wherein the inner tube has at least one recess and the outer tube has at least one recess proposed.
  • This arrangement which may also be referred to as a "pipe-in-pipe design" is constructed such that, depending on a relative position of the inner pipe to the outer pipe at selected locations, steam passes through the at least one recess of the outer pipe and through the at least one recess of the inner tube can get into the inner tube and so a tapping operation can be achieved.
  • the outer tube is formed by a bore in a housing of the steam turbine.
  • the outer tube can be realized without the need for an additional component.
  • relative positions of the inner tube to the outer tube can be selected, in each case at most one point steam from the steam turbine through a recess of the outer tube and a recess of the inner tube can flow.
  • This can be achieved that steam is taken only from a specific area in the steam turbine.
  • it is ensured that steam does not flow back into the steam turbine in other areas, which would result in a step bypass.
  • This danger would be given, for example from an area of the steam turbine, in which the pressure is higher, steam could flow into the inner tube and from there flow back to another area of the lower pressure steam turbine.
  • the point at which steam from the steam turbine may flow through a recess of the outer tube and a recess of the inner tube may be selected depending on the operating condition of the steam turbine and depending on the request of a heat consumer. This ensures that steam in a desired pressure range can be removed from the steam turbine. This can be reacted in a simple manner to different requirements of a heat consumer, usually a district heating network, and thus maximizing the fuel utilization.
  • the inner tube is rotatable relative to the outer tube.
  • Essential to the invention is the relative rotation of the inner tube to the outer tube.
  • the inner tube is rotatable and the outer tube is firmly positioned.
  • the recesses of the inner tube are also rotated.
  • On the outer tube recesses are mounted at a certain distance at the same radial position.
  • On the inner tube recesses are also provided in the longitudinal direction at the same locations, but which are mounted along the circumference at different locations.
  • a moving component is sufficient, in the above example the inner tube. This also satisfies a drive. With a plurality of valves or flaps, as is common in the art, it is necessary to provide a separate drive for each valve or flap.
  • the outer tube is firmly positioned.
  • the outer tube could have a plurality of recesses and the inner tube could have a single recess.
  • the recess of the inner tube and the recesses of the outer tube could all be in the same place in the circumferential direction.
  • steam flows through the steam turbine to the at least one recess of the outer tube are arranged.
  • the steam can flow in order from the steam turbine to the outer tube.
  • the connections may be conventional in the art steam lines. Since only when a recess of the inner tube is arranged at the location of the respective recess of the outer tube, steam can flow out of the steam turbine, it is possible without special effort for Dampfabsperrened to arrange such compounds.
  • the steam for feeding to an external heat consumer in particular a district heating network, can be removed.
  • This is an essential embodiment of the invention. But it is not excluded the invention for example, to use for improved regenerative feedwater heating or for other conceivable purposes.
  • the recesses are formed by bores or openings in the manner of a bore. By drilling the recesses can be provided with little effort.
  • a steam turbine 1 Shown schematically is a steam turbine 1 with a steam inlet 2.
  • the steam turbine has an axis 3, at which there is a shaft, not shown. Routes 4 to 7, in which the steam is expanded while driving the shaft of the steam turbine 1, can be seen schematically. Between the rows of runs 4 and 5, a steam 8 through which the steam can flow passes.
  • the connection 8 leads to an outer tube 9, more precisely to a recess 10 of the outer tube 9.
  • another tube is arranged as an inner tube 15.
  • the inner tube 15 has recesses longitudinally at the same locations as the outer tube 9.
  • a recess 16 of the outer tube 9 has a recess 17 and at the location of the recess 14 has a recess 18.
  • the recesses 16, 17 and 18 of the inner tube are located in the circumferential direction at different In the setting shown in FIG. 1, the recess 16 of the inner tube 15 adjoins the recess 10 of the outer tube 9. This steam can be removed after relaxation in the series 4 and through the flow-through compound 8 in the inner tube 15 and on to a Steam extraction 19 flow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP13193757.5A 2013-11-21 2013-11-21 Agencement pour le prélèvement de vapeur hors d'une turbine à vapeur Withdrawn EP2876266A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13193757.5A EP2876266A1 (fr) 2013-11-21 2013-11-21 Agencement pour le prélèvement de vapeur hors d'une turbine à vapeur
PCT/EP2014/070474 WO2015074789A1 (fr) 2013-11-21 2014-09-25 Dispositif d'élimination de vapeur d'une turbine à vapeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13193757.5A EP2876266A1 (fr) 2013-11-21 2013-11-21 Agencement pour le prélèvement de vapeur hors d'une turbine à vapeur

Publications (1)

Publication Number Publication Date
EP2876266A1 true EP2876266A1 (fr) 2015-05-27

Family

ID=49622707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13193757.5A Withdrawn EP2876266A1 (fr) 2013-11-21 2013-11-21 Agencement pour le prélèvement de vapeur hors d'une turbine à vapeur

Country Status (2)

Country Link
EP (1) EP2876266A1 (fr)
WO (1) WO2015074789A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009004173A1 (de) * 2009-01-09 2010-07-15 Man Turbo Ag Dampfturbine und Verfahren zum Betrieb eienr Dampfturbine
DE102012104572A1 (de) * 2011-05-27 2012-11-29 General Electric Co. Variabler Speisewasservorwärmekreislauf
DE102011078193A1 (de) * 2011-06-28 2013-01-03 Siemens Aktiengesellschaft Zusätzliche Regelanzapfung für einen Vorwärmer zur Verbesserung der Anlagendynamik und Frequenzregelung bei einem Dampfkraftwerk

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009004173A1 (de) * 2009-01-09 2010-07-15 Man Turbo Ag Dampfturbine und Verfahren zum Betrieb eienr Dampfturbine
DE102012104572A1 (de) * 2011-05-27 2012-11-29 General Electric Co. Variabler Speisewasservorwärmekreislauf
DE102011078193A1 (de) * 2011-06-28 2013-01-03 Siemens Aktiengesellschaft Zusätzliche Regelanzapfung für einen Vorwärmer zur Verbesserung der Anlagendynamik und Frequenzregelung bei einem Dampfkraftwerk

Also Published As

Publication number Publication date
WO2015074789A1 (fr) 2015-05-28

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