EP2174060A2 - Steam generator - Google Patents
Steam generatorInfo
- Publication number
- EP2174060A2 EP2174060A2 EP08786769A EP08786769A EP2174060A2 EP 2174060 A2 EP2174060 A2 EP 2174060A2 EP 08786769 A EP08786769 A EP 08786769A EP 08786769 A EP08786769 A EP 08786769A EP 2174060 A2 EP2174060 A2 EP 2174060A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam generator
- heating gas
- heating
- horizontal
- loads
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 51
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010304 firing Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- F22B37/242—Supporting, suspending, or setting arrangements, e.g. heat shielding for bottom supported water-tube steam generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B15/00—Water-tube boilers of horizontal type, i.e. the water-tube sets being arranged horizontally
Definitions
- the invention relates to a steam generator, in particular in horizontal construction, with a through-flow in a nearly horizontal heating gas from a heating medium heating gas channel.
- the heat contained in the relaxed working fluid or heating gas from the gas turbine is used to generate steam for the steam turbine.
- the heat transfer takes place in a heat recovery steam generator connected downstream of the gas turbine, in which a number of heating surfaces are usually arranged for water preheating, steam generation and steam superheating.
- the heating surfaces are connected in the water-steam cycle of the steam turbine.
- the water-steam cycle usually includes several, z. B. three, pressure levels, each pressure stage may have a Verdampferlikflache.
- the invention is therefore based on the object of specifying a steam generator of the abovementioned type, in which, with a particularly low effort and in a particularly simple design, a reliable holding of the named loads, in particular the additional loads given by the design internal pressure of the heating gas, is guaranteed.
- the heating gas channel is comprised of a number of supporting frames arranged one after the other in the direction of the heating gas, at least least two of the support frames are connected to each other via a number of horizontal discs.
- the invention is based on the consideration that the manufacturing and material-related effort for reliable dissipation of said loads can be kept particularly low, especially by the introduced via the internal pressure of the flue gas load component not as in conventional systems on individual frame elements of the heating gas channel, son - instead, be focused on the foundation.
- these support frames should be connected in the manner of a truss structure via suitably positioned horizontal disks.
- the horizontal discs are designed in the manner of horizontal struts.
- the free clamping heights can be significantly reduced, for example, to one-third, so that the vertical socket only about one-eighth (corresponding to 12.5%) the usual bending moments are charged.
- a reliable Abstut- tion can be achieved with significantly reduced material usage.
- the occurring deformations are also significantly reduced by the use of H-trusses.
- a particularly reliable initiation of the loads can be achieved by providing the truss obtained by the horizontal struts in a particularly symmetrical and evenly distributed manner for the outer surfaces of the heating gas channel.
- the horizontal discs are advantageously arranged on both sides of the Schugaskanals.
- a particularly symmetrical and thus comparatively simple and effective construction is achievable by two horizontal struts are arranged in pairs opposite each other to the heating gas channel in a particularly advantageous embodiment.
- the components forming the truss frame are designed with regard to their choice of material and dimensioning suitable that the loads and bending moments introduced via the internal pressure of the flue gas can be reliably derived with sufficient safety margin with a design based on internal pressure of the fuel gas of about 70 mbar.
- this design-related internal pressure is used as the basis for all parts of the heating gas channel, although in the exit region of the heating gas channel a comparatively lower internal pressure occurs during operation due to the resulting pressure loss of the heating gas as it flows through the heating gas channel.
- the steam generator is used as a heat recovery steam generator of a gas and steam turbine plant.
- the steam generator is advantageously one of the heating gas Gas turbine downstream.
- it is expedient to provide an additional firing behind the gas turbine for increasing the heating gas temperature.
- a truss frame is formed as a supporting structure for the Schugaskanal by connecting the support frame interconnecting horizontal discs over the with particularly low material and manufacturing costs a reliable and concentrated discharge of the resulting loads is possible ,
- the steam generator 1 according to the FIG is designed as a heat recovery steam generator and downstream of a gas turbine not shown in detail downstream.
- the steam generator 1 has an enclosing wall 2, which forms in the manner of a horizontal construction in an approximately horizontal, indicated by the arrow 4
- Wiengasraum x hot gas channel 6 for the exhaust gas from the gas turbine.
- the heating gas channel 6 a number of suitably designed and dimensioned heating surfaces for preheating, evaporation and superheating of the flow medium is arranged in each case.
- the surrounding the Edelgaskanal 6 surrounding wall 2 is constructed layered in the exemplary embodiment in the usual design, adjacent to a skin forming the sheet including adjusting a insulation provided as a dam structure is arranged, which in turn is limited to the interior of the Schugaskanals 6 out of a liner.
- the heating gas channel 6 On the inlet side, the heating gas channel 6 has a comparatively small free flow cross-section, which widens continuously in the area of a transition section 8 in the direction of the heating gas 4 up to the actual free flow cross-section of the heating gas channel 6.
- the structural design of the steam generator 1 is designed specifically for a reliable recording of the resulting loads with a particularly low manufacturing and material costs.
- the supporting structure of the steam generator 1 comprises, on the one hand, a number of vertical stubs 10 which are designed with regard to dimensioning and choice of material such that they can forward the resulting vertical loads from Schuflachenlas-, pipes and the like readily to the foundation.
- a truss support frame 12 is provided over the other resulting loads are deliberately and concentrated in the foundation derived.
- the garticianstragrahmen 12 is formed from a number of seen in Bankgasraum x successively arranged Stutzrahmen 14 which comprise the Bankgaskanal 6 respectively, and which are connected to each other via a number of horizontal discs 16.
- the horizontal discs 16 are arranged on both sides of the Schugaskanals 6 and in pairs opposite each other.
- Stutzrahmen 14 are shown, which could be provided depending on possible further design criteria of the steam generator and a larger number of support frame 14. This is useful, for example, in the case of the arrangement of an additional firing or a catalyst.
- two mutually opposite horizontal disks 16 are connected to each other by a tension rod 18 which is oriented essentially horizontally.
- tie rods 18 is just in the inlet region of the Schugaskanals 6, where in the case of operation of the steam generator 1 usually the largest internal pressure of the hot gas is applied, the given by the internal pressure loads that can be up to five times higher than the wind loads, suitably coupled and compensated for each other so that no introduction of these loads or the resulting bending moments on the truss frame 12 in the foundation is required.
- the truss frames 12 are designed in the embodiment with a base width of about 2.75 m.
- two horizontal disks 16 are provided on each side of the heating gas channel 6 for load acceptance and delivery to the truss frame 12.
- the free clamping heights of the respective side surfaces of the Edelgaskanals 6 are thus reduced with respect to the introduction of force and torque to one third compared to the full height of the Edelgaskanals 6. Since the corresponding bending moments are given according to the relationship M ⁇ Q * I 2/11, thus the respective bending moment is reduced by the correspondingly lower free clamping height of about one-eighth or 12.5% of the costs necessary for the full height of the heating gas channel 6 bending moment. This achieves a solution which can be achieved with a correspondingly lower use of material and the associated production outlay.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08786769T PL2174060T3 (en) | 2007-08-10 | 2008-08-01 | Steam generator |
EP08786769.3A EP2174060B1 (en) | 2007-08-10 | 2008-08-01 | Steam generator |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07015829A EP2026000A1 (en) | 2007-08-10 | 2007-08-10 | Steam generator |
EP08786769.3A EP2174060B1 (en) | 2007-08-10 | 2008-08-01 | Steam generator |
PCT/EP2008/060149 WO2009021861A2 (en) | 2007-08-10 | 2008-08-01 | Steam generator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2174060A2 true EP2174060A2 (en) | 2010-04-14 |
EP2174060B1 EP2174060B1 (en) | 2015-10-14 |
Family
ID=40070736
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07015829A Withdrawn EP2026000A1 (en) | 2007-08-10 | 2007-08-10 | Steam generator |
EP08786769.3A Not-in-force EP2174060B1 (en) | 2007-08-10 | 2008-08-01 | Steam generator |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07015829A Withdrawn EP2026000A1 (en) | 2007-08-10 | 2007-08-10 | Steam generator |
Country Status (7)
Country | Link |
---|---|
US (1) | US8596227B2 (en) |
EP (2) | EP2026000A1 (en) |
KR (1) | KR101494483B1 (en) |
CN (1) | CN101779081B (en) |
PL (1) | PL2174060T3 (en) |
RU (1) | RU2467249C2 (en) |
WO (1) | WO2009021861A2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2620775T3 (en) * | 2009-11-19 | 2017-06-29 | Nem Power-Systems, Niederlassung Deutschland Der Nem B.V. Niederlande | Willingness to influence an exhaust gas flow |
EP2336635B1 (en) * | 2009-12-19 | 2014-07-30 | Oschatz Gmbh | Waste heat boiler for cooling waste gases, in particular waste gases containing dust |
FI128596B (en) * | 2019-06-10 | 2020-08-31 | Valmet Technologies Oy | Supporting beam arrangement for supporting a flue gas duct, and a power boiler comprising thereof |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR998913A (en) | 1952-01-24 | |||
FR1417696A (en) * | 1964-12-16 | 1965-11-12 | Combustion Eng | Improvements to furnaces of continuous tubular screen boilers |
SU569792A1 (en) * | 1975-10-27 | 1977-08-25 | Предприятие П/Я А-3513 | Convection-type gas flue |
SU900071A1 (en) * | 1978-12-19 | 1982-01-23 | Производственное объединение "Уралэнергоцветмет" | Convective gas duct |
EP0137119B1 (en) * | 1983-09-08 | 1988-08-24 | GebràDer Sulzer Aktiengesellschaft | Steam generator |
US4685426A (en) * | 1986-05-05 | 1987-08-11 | The Babcock & Wilcox Company | Modular exhaust gas steam generator with common boiler casing |
SE466417B (en) * | 1990-06-15 | 1992-02-10 | Abb Carbon Ab | SCREWING FRAMES FOR FRONT BANKS IN FRAMEWORK FOR VERTICALLY MOUNTED BEDROOM |
US5722354A (en) * | 1995-12-08 | 1998-03-03 | Db Riley, Inc. | Heat recovery steam generating apparatus |
US6186221B1 (en) * | 1998-02-12 | 2001-02-13 | Combustion Engineering, Inc. | Heat recovery assembly |
US6039008A (en) * | 1999-02-01 | 2000-03-21 | Combustion Engineering, Inc. | Steam generator having an improved structural support system |
US6092591A (en) * | 1999-10-08 | 2000-07-25 | Abb Alstom Power Inc. | Top mounting arrangement for a heat exchange module |
RU2187751C2 (en) * | 2000-09-29 | 2002-08-20 | Открытое акционерное общество "Энергомашкорпорация" | Apparatus for attachment of boiler heating surfaces |
DE10335499B3 (en) * | 2003-07-31 | 2004-11-25 | Alstom Power Boiler Gmbh | Steam generator erection method has pre-assembled pipe wall modules attached to steam vessel frame before fitting frame cover |
JP4800843B2 (en) * | 2006-05-29 | 2011-10-26 | 株式会社日立プラントテクノロジー | Installation method of boiler furnace wall |
FI124485B (en) * | 2007-05-08 | 2014-09-30 | Valmet Power Oy | Boiler plant, support structure and method for supporting walls of a soda boiler in a boiler plant |
US8333170B2 (en) * | 2008-12-23 | 2012-12-18 | Doozan Babcock Energy America, LLC | Buckstay system |
JP5387324B2 (en) * | 2009-10-22 | 2014-01-15 | 株式会社Ihi | Backstay coupling mechanism |
-
2007
- 2007-08-10 EP EP07015829A patent/EP2026000A1/en not_active Withdrawn
-
2008
- 2008-08-01 EP EP08786769.3A patent/EP2174060B1/en not_active Not-in-force
- 2008-08-01 US US12/672,129 patent/US8596227B2/en active Active
- 2008-08-01 CN CN2008801028280A patent/CN101779081B/en not_active Expired - Fee Related
- 2008-08-01 RU RU2010108473/06A patent/RU2467249C2/en not_active IP Right Cessation
- 2008-08-01 KR KR20107005175A patent/KR101494483B1/en active IP Right Grant
- 2008-08-01 PL PL08786769T patent/PL2174060T3/en unknown
- 2008-08-01 WO PCT/EP2008/060149 patent/WO2009021861A2/en active Search and Examination
Non-Patent Citations (1)
Title |
---|
See references of WO2009021861A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009021861A3 (en) | 2009-06-11 |
KR101494483B1 (en) | 2015-02-17 |
RU2010108473A (en) | 2011-09-20 |
PL2174060T3 (en) | 2016-04-29 |
EP2174060B1 (en) | 2015-10-14 |
US20110030624A1 (en) | 2011-02-10 |
RU2467249C2 (en) | 2012-11-20 |
EP2026000A1 (en) | 2009-02-18 |
WO2009021861A2 (en) | 2009-02-19 |
KR20100066496A (en) | 2010-06-17 |
CN101779081A (en) | 2010-07-14 |
US8596227B2 (en) | 2013-12-03 |
CN101779081B (en) | 2012-03-21 |
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