EP2325559B1 - Anordnung zur Beeinflussung einer Abgasströmung - Google Patents

Anordnung zur Beeinflussung einer Abgasströmung Download PDF

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Publication number
EP2325559B1
EP2325559B1 EP09014442.9A EP09014442A EP2325559B1 EP 2325559 B1 EP2325559 B1 EP 2325559B1 EP 09014442 A EP09014442 A EP 09014442A EP 2325559 B1 EP2325559 B1 EP 2325559B1
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EP
European Patent Office
Prior art keywords
arrangement according
duct
pipes
rods
supporting
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.)
Active
Application number
EP09014442.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2325559A1 (de
Inventor
Walter A. Kramer
Wim Stijger
Raymond Johannes Josephus Gunnewijk
Uwe Hensch
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 Heat Transfer Technology BV Niederlassung Deutschland
Original Assignee
NEM Power Systems Niederlassung Deutschland der NEM Energy BV
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 NEM Power Systems Niederlassung Deutschland der NEM Energy BV filed Critical NEM Power Systems Niederlassung Deutschland der NEM Energy BV
Priority to ES09014442.9T priority Critical patent/ES2620775T3/es
Priority to EP09014442.9A priority patent/EP2325559B1/de
Priority to PCT/EP2010/007014 priority patent/WO2011060935A1/de
Priority to KR1020127013601A priority patent/KR101777431B1/ko
Priority to US13/510,765 priority patent/US9291342B2/en
Publication of EP2325559A1 publication Critical patent/EP2325559A1/de
Application granted granted Critical
Publication of EP2325559B1 publication Critical patent/EP2325559B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • F22B1/1815—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines using the exhaust gases of gas-turbines
    • 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
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/24—Supporting, suspending, or setting arrangements, e.g. heat shielding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/028—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with channels

Definitions

  • the invention relates to an arrangement for influencing the flow of an exhaust gas of a gas turbine having the features of the preamble of claim 1.
  • the exhaust stream of a gas turbine is typically not supplied to the exhaust system as uniformly distributed over the entire channel cross-section flow with a uniform velocity of the exhaust gas.
  • the unevenly distributed flow can lead to mechanical loads on the system components arranged in the exhaust gas line. These parts of the system would be expensive, z. B. be designed in terms of wall thickness, if not other measures can be provided.
  • the EP 0 863 364 A2 is a waste heat boiler known to be with a widening or diverging Equipped pipe, which runs from the outlet of a turbine to the inlet of the boiler.
  • the surrounding wall of the diverging pipe which extends from the upper end of the boiler to the upper end of the outlet of the turbine, is inclined at an angle ( ⁇ ) greater than 45 ° and up to 75 ° with respect to the horizontal plane.
  • the diverging tube is connected to the upper part of the outlet of the turbine by means of an arcuate wall part.
  • gas flow conveying profiles arranged in successive and adjacent rows.
  • a combined cycle system that includes a gas turbine connected to a heat recovery steam generator.
  • the heat recovery steam generator contains a section of a "selective catalytic reactor", wherein nitrogen oxide reacts with a reacting gas, such as ammonia or urea, to produce molecular nitrogen and water vapor.
  • the flared transition section includes a series of flow-restricting profile ribs that extend across the section in a pattern and evenly distribute the flue gas over the large cross-section of the heat transfer section.
  • the reacting gas is injected into the flue gas stream through a series of nozzles positioned over the tread ribs so that the reacting gas is uniformly mixed and dispersed before entering the Selective Catalytic Reactor section.
  • the invention has for its object to provide an arrangement to the waste heat boiler of a gas turbine plant and / or possibly in the exhaust gas channel leading internals from damage caused by flow forces Protecting currents with locally increased speeds.
  • the flow grid according to the invention is provided with all features of independent claim 1 and partially gas-impermeable and designed so that the flow is selectively changed.
  • the exhaust strands with increased speed are decelerated and the flow velocity is made uniform over the channel cross-section.
  • the flow grid is installed in the duct of the exhaust system in such a way that the equalization of the speed takes place sufficiently, even before the gas flow hits the subsequent system parts.
  • Fig. 1 is brought from a gas turbine exhaust gas A, not shown, via a channel 1 to the housing 2 of a diverter 3.
  • a channel 4 which supplies the exhaust gas A a waste heat boiler, whose entry is indicated by the line 13.
  • From the housing 2 branches off leading to a bypass chimney, not shown Bypasskanal 5.
  • a flap 6 is pivotably mounted about an axis 7 such that it can shut off either the channel 4 or the bypass channel 5 while maintaining various intermediate positions.
  • part A1 of the exhaust gas A brought from the gas turbine enters the bypass channel 5, while another part A2 flows around the free edge 6a of the flap 6 and flows to the waste heat boiler.
  • a guide 8 In the inflow end of the channel 4, a guide 8 is arranged.
  • This guide 8 has arranged in a vertical cross-sectional plane baffles 9, which can be adjustable.
  • baffles 9 For central storage of the baffles 9 can still be arranged in the channel 4, a carrier 10.
  • the pivoting angle of the individual baffles 9 can be adjusted independently of each other in order to better adapt the required deflection to the given strand configuration can.
  • the gas flow A2 is z. B. evenly distributed over the cross section of the channel 4 when starting the waste heat boiler. After the end of the starting operation, the flap 6 closes off the bypass channel 5, and the baffles 9 assume a position in which the gas flow A supplied by the gas turbine flows without distraction in the guide 8 to the waste heat boiler. In this position, the guide generates no appreciable pressure loss.
  • a guide 8 comparable guide 11 is arranged with baffles 12, the z. B. can improve the flow of a arranged in the bypass channel 5 or the downstream bypass silencer.
  • the baffles 12 may be adjustable.
  • a flow grille 14 described in more detail below has the task of equalizing the flow within the channel 1 connected to the gas turbine and to reduce the greatly inflated velocities.
  • the flow grid can be arranged in connection with the guide devices 8 and / or 11, but it can also be used without the guide devices.
  • the flow grid 14 which in the Fig. 1 to 3 is indicated only schematically, is transverse to the channel 1 at the gas turbine end facing and far enough before the waste heat boiler or the internals - such. B. the flap 6 - arranged.
  • the flow grid 14 is preferably in the region of the channel 1 arranged where the highest gas velocities are expected.
  • the flow grid 14 is a plate-like, partially gas-impermeable structure which partially obstructs the channel cross-section and is provided with passages for the exhaust gas.
  • the flow grid 14 may consist of a plurality of spaced-apart tubes 15, between which gaps for the passage of the exhaust gas are formed.
  • the tubes 15 are interconnected by transversely extending elements, which may also be tubes 15.
  • a number of tubes 15 may be present.
  • several rows of tubes 15 lying one behind the other in the flow direction of the exhaust gas may also be used. In this case, the tubes 15 of a row can be arranged offset from the tubes 15 of the following row.
  • the tubes 15 may be made of a heat-resistant material and constitute a purely mechanical installation.
  • the tubes 15 can also be designed as internally cooled elements.
  • the tubes 15 of the flow grid 14 are held in a support structure 16.
  • the support structure 16 may be supported on the inner or outer shell of the channel 1, so that the forces caused by the flow of the exhaust gas can be absorbed. Likewise, the expansions of the material due to the operating temperatures are compensated by the support structure 16.
  • the support structure 16 preferably consists of vertical support tubes 17 or support rods, which are passed through the wall of the channel 1.
  • the support tubes 17 are supported on the channel bottom via support tube extensions 18 on the concrete foundation 19 in bearings 20, 21 ( Fig. 5, 6 ). It is a welded construction, which is designed without any gaps.
  • the bearing 20 shown on the right side is a fixed bearing, and the bearing 21 on the left side is formed as a floating bearing.
  • the support tubes 17 are supported on the upper side of the channel via an overlying steel structure 22.
  • support structures which are provided with support tubes 17 or support rods, and wherein the support tubes 17 or support rods led out of the channel 1 and are rotatably mounted on the wall of the channel 1.
  • the inner wall of the channel 1, as well as the passage region of the support tubes 17 is provided with an insulation 23.
  • the supports are inspected from the outside and can be adjusted during plant operation.
  • the flow grid 14 is a welded construction of materials that have comparable coefficients of thermal expansion.
  • a vertical support tube 17 or vertical support rod of the support structure 16 is mounted on one side at the top and bottom of the inner or outer shell of the channel 1, rotatably mounted.
  • the support structure 16 is rotatably mounted via tabs 25 on an additional, rotatably mounted on the shell of the channel 1 support 26.
  • the support 26 is positioned such that the thermal difference ⁇ L between the flow grid 14 and the channel 1 produces rotation of the support 26.
  • the support 26 may be above or below the outside of the channel envelope via a damper system 27 with the wall of the channel. 1 get connected. Such damper systems can also be attached to the support tubes 17.
  • tubes 15, 14 rods or similarly elongated elements may be used for the flow grid.
  • the tubes 15 are arranged vertically. It is also possible to align the tubes 15 or rods horizontally, angled, circular or oval to each other. It is essential that a partially gas-impermeable and provided with passages flow grid 14 is formed.
  • the described flow grid 14 is used to protect the arranged in the channel 1 internals of a possibly arranged in channel 1, not shown here exhaust muffler and as in Fig. 1 shown flap 6 of the diverter 3, which selectively supplies the exhaust gas of the gas turbine to the waste heat boiler or a waste heat boiler or parallel arranged bypass channel 5. If such a bypass is missing, the flow grid 14 can advantageously be installed in the channel 1 before it enters the waste heat boiler ( Fig. 2 ). In this case, the internals of the waste heat boiler by the homogenization of the flow distribution - caused by the flow grid 14 - protected. Finally, the flow grid 14 can also be used in an exhaust gas system connected to a gas turbine, which is connected neither directly nor via a diverter 3 with a waste heat boiler ( Fig. 3 ). In the channel 1 of such an exhaust system also guide surfaces 12 may be installed. Also in this case, the flow rate of the turbine exhaust gas is made uniform to the existing in the exhaust system internals -. B. Exhaust silencer - to protect.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP09014442.9A 2009-11-19 2009-11-19 Anordnung zur Beeinflussung einer Abgasströmung Active EP2325559B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES09014442.9T ES2620775T3 (es) 2009-11-19 2009-11-19 Disposición para influenciar un flujo de gas de escape
EP09014442.9A EP2325559B1 (de) 2009-11-19 2009-11-19 Anordnung zur Beeinflussung einer Abgasströmung
PCT/EP2010/007014 WO2011060935A1 (de) 2009-11-19 2010-11-18 Anordnung zur beeinflussung einer abgasströmung
KR1020127013601A KR101777431B1 (ko) 2009-11-19 2010-11-18 배기 가스 유동에 영향을 주기 위한 어셈블리
US13/510,765 US9291342B2 (en) 2009-11-19 2010-11-18 Arrangement for influencing an exhaust gas flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09014442.9A EP2325559B1 (de) 2009-11-19 2009-11-19 Anordnung zur Beeinflussung einer Abgasströmung

Publications (2)

Publication Number Publication Date
EP2325559A1 EP2325559A1 (de) 2011-05-25
EP2325559B1 true EP2325559B1 (de) 2016-12-28

Family

ID=42829328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09014442.9A Active EP2325559B1 (de) 2009-11-19 2009-11-19 Anordnung zur Beeinflussung einer Abgasströmung

Country Status (5)

Country Link
US (1) US9291342B2 (ko)
EP (1) EP2325559B1 (ko)
KR (1) KR101777431B1 (ko)
ES (1) ES2620775T3 (ko)
WO (1) WO2011060935A1 (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10001272B2 (en) * 2009-09-03 2018-06-19 General Electric Technology Gmbh Apparatus and method for close coupling of heat recovery steam generators with gas turbines
EP3006683B1 (en) * 2014-10-08 2017-08-02 Ansaldo Energia Switzerland AG Diverting system
FR3037098B1 (fr) * 2015-06-08 2017-05-26 Ge Energy Products France Snc Systeme d'echappement pour turbine a gaz et procede de commande d'un tel systeme
CN110118345B (zh) * 2019-05-21 2024-02-13 中冶京诚工程技术有限公司 一种烟气导流系统、方法及余热锅炉
FI128596B (en) * 2019-06-10 2020-08-31 Valmet Technologies Oy Support beam arrangement for carrying a flue gas duct and power boiler that covers it
DE102020207663A1 (de) * 2020-06-22 2021-12-23 Siemens Aktiengesellschaft Gas-und-Dampfturbinen-Kraftwerk und Verfahren zur Nachrüstung einer solchen
US20220025786A1 (en) * 2020-07-23 2022-01-27 General Electric Company Exhaust control damper system for dual cycle power plant
US11828189B1 (en) 2021-12-20 2023-11-28 General Electric Company System and method for restraining heat exchanger with cable in tension

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE19737507A1 (de) * 1997-08-28 1999-03-11 Dampers Engineering Gmbh Anordnung zur Beeinflussung des Dralls eines Abgasstroms

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Publication number Priority date Publication date Assignee Title
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Also Published As

Publication number Publication date
US20120279596A1 (en) 2012-11-08
KR20120123257A (ko) 2012-11-08
EP2325559A1 (de) 2011-05-25
KR101777431B1 (ko) 2017-09-11
ES2620775T3 (es) 2017-06-29
WO2011060935A1 (de) 2011-05-26
US9291342B2 (en) 2016-03-22

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