EP1998111A2 - Kesselanlage, Stützstruktur und Verfahren zum Stützen der Wände eines Dampfkessels einer Kesselanlage - Google Patents

Kesselanlage, Stützstruktur und Verfahren zum Stützen der Wände eines Dampfkessels einer Kesselanlage Download PDF

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Publication number
EP1998111A2
EP1998111A2 EP08397508A EP08397508A EP1998111A2 EP 1998111 A2 EP1998111 A2 EP 1998111A2 EP 08397508 A EP08397508 A EP 08397508A EP 08397508 A EP08397508 A EP 08397508A EP 1998111 A2 EP1998111 A2 EP 1998111A2
Authority
EP
European Patent Office
Prior art keywords
boiler
support structure
frame
house
wall
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Withdrawn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
EP08397508A
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English (en)
French (fr)
Inventor
Martti Seppänen
Johan Ruotsala
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.)
Valmet Power Oy
Original Assignee
Metso Power Oy
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 Metso Power Oy filed Critical Metso Power Oy
Publication of EP1998111A2 publication Critical patent/EP1998111A2/de
Withdrawn legal-status Critical Current

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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
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • 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
    • 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
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/208—Backstay arrangements

Definitions

  • the invention relates to a boiler plant according to the preamble of the appended claim 1.
  • the invention also relates to a support structure according to the preamble of the appended claim 7, as well as a method for supporting the walls of a steam boiler according to the preamble of the appended claim 13.
  • the boilers of typical boiler plants comprise tubular walls, where water and/or steam circulates. Combustion takes place inside the boiler in a furnace, and as a result of the combustion and gas flows negative pressures and positive pressures may occur in different areas of the boiler. The pressure effect is directed at the walls of the boiler and the walls tend to move. For this reason, different support structures are made in the walls.
  • a support structure is a horizontal buckstay, which circles the outer wall of the boiler.
  • the support ring is formed of a strong steel beam, which is attached to the wall of the boiler in a suitable manner.
  • US 5,557,901 One known support structure solution is disclosed in US 5,557,901 .
  • the boilers of large boiler plants may be several tens of meters high, in which case several support structures are needed. Thus, a great deal of steel is needed for the structures, which causes costs.
  • the boiler plant according to the invention is primarily characterized in what will be presented in the characterizing part of the independent claim 1.
  • the support structure according to the invention is primarily characterized in what will be presented in the characterizing part of the independent claim 7.
  • the method according to the invention is primarily characterized in what will be presented in the characterizing part of the independent claim 13.
  • the other, dependent claims will present some preferred embodiments of the invention.
  • the different embodiments of the invention can be used in different configurations and in different environments and in connection with boilers using different boiler techniques.
  • the basic idea of the invention is to integrate the support structures of the boiler walls to the frame of the boiler house. This is provided in such a manner, that the boiler walls are supported laterally to the frame of the boiler house by a support structure.
  • the support structure comprises attachment areas for attaching the support structure to the boiler wall and the attachment areas allow the horizontal movement of the support structure in relation to the boiler wall.
  • the horizontal movement tends to be created by the thermal expansion of the boiler, and the pressure effects.
  • the support structure allows the thermal expansion, but substantially prevents movement created by the pressure effect.
  • the support structure comprises attachment structure for attaching the support structure to the frame of the boiler house and the attachment structures allow the vertical movement of the boiler wall in relation to the frame of the boiler house.
  • the change in the height of the boiler created by thermal expansion can be, for example, 20 to 300 mm.
  • the support structure comprises attachment structure for attaching the support structure to the frame of the boiler house and the attachment structures allow the support structure to turn vertically in relation to the frame of the boiler house.
  • the boiler wall can move vertically in relation to the frame, for example, due to the effect of changed in the temperature of the boiler.
  • a boiler plant comprises a service platform and a support structure is used as a bearing structure.
  • a support structure is used as a bearing structure.
  • One significant advantage of an embodiment is that the structures of a boiler house provide a multiple advantage, because they operate both as a horizontal bracing of both the pressurized frame and the building, and as a structure of a service platforms.
  • the entire membrane wall of the boiler becomes significantly simpler in comparison to the present structure, because the horizontal support rings are eliminated, and at the same time the isolation and plating of the wall become significantly simpler.
  • the span lengths and buckling lengths of steel columns necessary in the frame of a boiler house become significantly shorter.
  • the bending moments of the columns become smaller.
  • Buckling and transverse buckling do not significantly decrease the allowed bearing stresses either. Due to the solution the amount of steel needed for the columns decreases due to the new structure.
  • the support solution significantly increases the space for vertical pipe, duct and cable drafts and stairs in the area between the outer wall lines of the house and the boiler stanchions.
  • the total volume of the house and the side dimensions decrease due to a decrease in the dimensions of the stanchions.
  • the boiler plant is easier to place in the environment.
  • the wind area of the boiler plant can be decreased.
  • a solution according to the invention is primarily intended for supporting large, tens of meters high steam boilers.
  • the solution is especially advantageous when the boiler plant comprises service platforms.
  • the invention is advantageous for supporting large recovery boilers.
  • the present solution may provide significant total weight savings in the structures of the boiler pressure parts and structures of the boiler house.
  • Figure 1 shows only those parts of a boiler plant that are necessary for describing the invention. These are the frame 1 of a boiler house, a boiler 2 and a support structure 3. In addition, other structures are required in the boiler plant, inter alia for supplying fuel and air, and for processing flue gases. In addition, there are often different structures for use and maintenance work.
  • the frame 1 of the boiler plant is for clarity shown only on one side, i.e. side A, even though the frame in practice is on each side.
  • the support structure 4 of an outer screen is shown only on side B of the boiler house, even though such a frame is advantageously on every screened side.
  • FIG. 1 shows a horizontal cross-section of the embodiment according to Figure 2 on level F3-F3, i.e. seen from above, can be seen the location of the screening frame 4, the frame 1 and the support structure 3 around the boiler 2 in an embodiment.
  • Figure 2 shows that the screening frame 4 can be attached to the frame 1 by a differently dimensioned spacing than the support structures 3.
  • the frame 1 of the boiler house is a support structure, to which the other structures of the boiler plant can be attached. For example, it is possible to suspend the boiler 2 from the upper part of the frame 1 above the boiler.
  • the frame 1 is generally made of steel beams and columns.
  • the frame 1 generally comprises vertical, horizontal and diagonal beam and columns parts.
  • a boiler plant with a boiler 2 that is 18 x 18 meters in its bottom area in an application comprises boiler columns 5 with a six meter spacing.
  • Horizontal truss beams 3 are placed with approximately a 3 meter spacing.
  • the stanchions are supported vertically with a significantly denser spacing than in traditional boiler plant houses, where horizontal bracing levels are typically every 12 meters (10...18 m) vertically.
  • the walls of a boiler 2 of a boiler plant are typically membrane walls, where a medium can be circulated. Due to the great height of the wall, in order to reach a sufficient bracing and pressure endurance, support structures 3 supporting the wall 2 of the boiler laterally are necessary. In the example according to figure 1 the walls of the boiler 2 are supported laterally to the frame 1 of the boiler house by support structures 3.
  • the support structures 3 are advantageously formed in such a manner that they allow the thermal expansion of the walls of the boiler 2.
  • the height direction distance of the adjacent support structures 3 can be 2 to 5 meters, advantageously 3 to 3 meters.
  • the distance of the support structures is selected to correspond to the spacing of the horizontal beams of the frame 1.
  • the support structure 3 is substantially located on the same level as the horizontal beam of the frame 1.
  • the distances of the support structures 3 may also vary.
  • the support structures 3 may be positioned more densely in those areas, where a larger load is directed, for example, due to pressure fluctuations.
  • a support structure 3 can be placed between the frame 1 of the boiler house, preferably the boiler stanchions 5, and the wall of the boiler 2.
  • the support structures 3 can be provided in various ways.
  • the support structure 3 is substantially as wide as the wall of the boiler 2.
  • the part of the support structure 3 placed against the boiler 2 wall substantially has the width of the boiler wall and the part located further away from the wall is wider.
  • figure 3 shows such an embodiment, where the ends of the support structure 3 are in a angle of approximately 45° in relation to the wall line, in which case the ends of the support structures placed on adjacent walls are parallel.
  • the support structure 3 is a truss structure.
  • the truss structure is formed of two beams located parallel to the wall of the boiler 2, between which there are diagonal beams.
  • the truss structure may comprise beams that are perpendicular to the wall of the boiler.
  • the beams are connected to each other in a suitable manner, such as, for example, by welding and/or with bolted joints.
  • the beams are, for example, rectangular pipes, in which case the strength in relation to their weight is advantageous.
  • the support structure 3 can be connected to the boiler 2 wall in different ways.
  • the support structure 3 comprises attachment areas 7, to which areas the wall of the boiler 2 is connected from the attachment points 8 on the boiler walls in the height direction.
  • the distance between the adjacent attachment areas 7 and attachment points 8 depends on the application.
  • the distance between the attachment areas 7 and the attachment points 8 is 0,5 to 2 meters horizontally, preferably approximately 1 meter, and of the boiler the above-mentioned 2 to 5 meters, preferably 3 to 4 meters.
  • the dimensioning is affected by, inter alia, the bracing of the walls of the boiler 2 and pressure loads.
  • attachment areas 7 of the support structure 3 comprise flanges.
  • the attachment points 8 of the boiler walls also comprise flanges.
  • the attachment areas 7 and the attachment points 8 may comprise different brackets, cavities, grooves, dents, pins, possibly springs, or other solutions suitable for connecting.
  • flanges are used as an example, because they have been found advantageous as they provide versatile application possibilities.
  • the overall dimensions of the wall of the boiler 2 change due to the effect of temperature, especially in the corner areas.
  • the change in the height of the boiler 2 can be, for example, 20 to 300 mm.
  • the change in the width of the boiler 2 can be, for example, 5 to 30 mm. It is advantageous to take into account the changes in the dimensions of the boiler 2 walls in the support structure 3 and/or its attachment to the boiler wall.
  • the vertical changes in the dimensions of the boiler 2 can be taken into account, inter alia, by attaching the support structure 3 by means of hinges or articulations to the boiler and the frame 1.
  • the hinge/articulation enables the movement of the boiler 2 wall in relation to the frame 1.
  • One such an attachment structure 9 is shown in figure 4 .
  • the attachment structure 9 is between the support structure 3 and the frame 1 of the boiler house and it allows the vertical turning of the support structure in relation to the attachment structure 9.
  • the support structure 3 can originally be placed diagonally, in which case it is substantially horizontal when the boiler 2 operates.
  • the lower support structures 3 of the support system are more diagonal than the upper support structures when the boiler is cold.
  • all the support structures 3 are substantially horizontal when the lower part of the boiler has moved more in relation to the frame 1 than the upper part.
  • the support structure 3 can originally be placed horizontally as well, in which case it is slightly diagonal when the boiler 2 operates.
  • the inclination of the support structure and/or the platform changes about one degree.
  • the horizontal changing of boiler 2 dimension can be take into account in different ways in the support structure.
  • the support structure 3 may allow the movement in relation to the support structure caused by the thermal expansion of the boiler 2 wall.
  • Different solutions allowing the movement can be provided in the support structure 3 and advantageously movement into a certain direction only is allowed.
  • different slide solutions can be used, where the wall of the boiler 2 may move in relation to the support structure 3 on a certain path defined by the slide.
  • the thermal expansion of the boiler 2 wall is taken into account by elongated holes 10 of the attachment area 7 of the support structure 3 and/or the flanges of the attachments points 8 of the boiler, such as shown, for example, in figure 5 .
  • the holes 10 are advantageously diagonal in the direction of change of the dimensions, in which case the hole 10 enables the movement of the wall of the boiler 2 in relation to the frame 1.
  • Figure 6 shows how the inclination of the holes 10 may change depending on what point of the boiler 2 wall they are located at.
  • the direction of movement allowed by the attachment area located in the middle of the boiler wall is mainly perpendicular to the wall, while on the edge areas movement in the direction of the wall is allowed in addition to the perpendicular movement.
  • the hole 10 is diagonal in relation to the wall of the boiler 2, the hole prevents a sudden perpendicular movement of the wall, i.e. such a movement typically caused by a pressure effect.
  • the support structure 3 operates as a bearing structure for service platforms 11.
  • Figure 1 shows a boiler plant, where two support structures 3 operate as a bearing structure for service platforms 11.
  • a suitable platform may be placed on the support structure 3, such as, for example, a grate or a plate, which enables moving in the area.
  • the service platform 11 may comprise the necessary auxiliary and shielding structures, such as rails, attachment points and toe mouldings. The service platform 11 may circle around the boiler 2 being placed on its every wall.
  • the service platform 11 may be, for example, on one or more walls of the boiler 2 and/or only on a part of the boiler wall.
  • the service platform 11 is at the location of the target to be serviced.
  • the support structures 3 can be formed in the construction phase at the construction site.
  • the support structures 3 are ready modules, which are attached to the boiler 2 wall and the frame 1 of the boiler house at the construction site.
  • Figure 6 shows a support structure module 3, which comprises attachment areas 7 and attachment structures 9.
  • the attachment areas 7 are for attaching the support structure 3 to the wall of the boiler 2.
  • the attachment structures 9 are for attaching the support structure 3 to the frame 1 of the boiler house.
  • the attachment areas 7 advantageously enable the horizontal movement of the support structure 3 in relation to the wall of the boiler 2, for example in order to allow the thermal expansion of the boiler wall.
  • the attachment structures 9 advantageously enable the vertical movement of the boiler wall 2 in relation to the frame 1 of the boiler house.
  • the attachment structures 9 allow the vertical turning of the support structure 3 in relation to the frame 1 of the boiler house. It is possible to form the support structure 3 of several modules as well, in which case the support structures around large boilers can be manufactured elsewhere and transported easily to the construction site, where they are assembled into a larger support structure.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Load-Bearing And Curtain Walls (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
EP08397508A 2007-05-08 2008-04-29 Kesselanlage, Stützstruktur und Verfahren zum Stützen der Wände eines Dampfkessels einer Kesselanlage Withdrawn EP1998111A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20075325A FI124485B (fi) 2007-05-08 2007-05-08 Kattilalaitos, tukirakenne ja menetelmä kattilalaitoksen soodakattilan seinien tukemiseksi

Publications (1)

Publication Number Publication Date
EP1998111A2 true EP1998111A2 (de) 2008-12-03

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EP08397508A Withdrawn EP1998111A2 (de) 2007-05-08 2008-04-29 Kesselanlage, Stützstruktur und Verfahren zum Stützen der Wände eines Dampfkessels einer Kesselanlage

Country Status (6)

Country Link
US (1) US20080276885A1 (de)
EP (1) EP1998111A2 (de)
CN (1) CN101303121B (de)
BR (1) BRPI0801481A8 (de)
CA (1) CA2630751A1 (de)
FI (1) FI124485B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019076427A1 (en) * 2017-10-16 2019-04-25 Sumitomo SHI FW Energia Oy A boiler construction

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2026000A1 (de) * 2007-08-10 2009-02-18 Siemens Aktiengesellschaft Dampferzeuger
CN102777896B (zh) * 2012-07-05 2017-01-04 哈尔滨锅炉厂有限责任公司 Cfb锅炉尾部烟道调温挡板固定装置及调温方法
CN104329680A (zh) * 2013-07-22 2015-02-04 同方环境股份有限公司 一种竖向烟道结构
CN105180140A (zh) * 2015-08-31 2015-12-23 衡阳市大成锅炉有限公司 一种可快速安装平台托架的锅炉外壳体
HUE050235T2 (hu) * 2016-06-20 2020-11-30 Sumitomo SHI FW Energia Oy Földönálló vízmelegítõ
CN106115456A (zh) * 2016-08-31 2016-11-16 哈尔滨锅炉厂有限责任公司 用于cfb锅炉省煤器吊挂结构及吊挂方法
FI128596B (en) * 2019-06-10 2020-08-31 Valmet Technologies Oy A support beam arrangement for supporting the flue gas duct, and a power boiler including it

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557901A (en) 1994-11-15 1996-09-24 The Babcock & Wilcox Company Boiler buckstay system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379177A (en) * 1966-12-29 1968-04-23 Combustion Eng Buckstay connection for furnace walls
US3736908A (en) * 1971-10-08 1973-06-05 Us Interior System for starting a fluidized bed boiler
US4095935A (en) * 1976-04-23 1978-06-20 Pullman Incorporated Furnace with plenum arches
US4286549A (en) * 1979-12-03 1981-09-01 Foster Wheeler Energy Corporation Steam generator support system
SE8605200D0 (sv) * 1986-12-03 1986-12-03 Asea Stal Ab Kraftanleggning med ett beddkerl med forbrenning i en fluidiserad bedd
FR2640356B1 (fr) * 1988-12-08 1991-01-25 Stein Industrie Dispositif d'appui sur une charpente fixe d'une masse reliee en porte-a-faux a un element mobile verticalement
SE466417B (sv) * 1990-06-15 1992-02-10 Abb Carbon Ab Vraengningshinder foer spantbalkar i ramverk foer vertikalt monterade baeddkaerl
US5317993A (en) * 1992-12-29 1994-06-07 Combustion Engineering, Inc. Vertical buckstay/leveler attachment to a horizontal buckstay
US5722354A (en) * 1995-12-08 1998-03-03 Db Riley, Inc. Heat recovery steam generating apparatus
DE10014758C2 (de) * 2000-03-24 2003-10-09 Alstom Power Boiler Gmbh Dampferzeuger und Montageverfahren für diesen
US7721680B2 (en) * 2007-05-03 2010-05-25 Babcock & Wilcox Power Generation Group, Inc. Link type seismic tie for boilers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557901A (en) 1994-11-15 1996-09-24 The Babcock & Wilcox Company Boiler buckstay system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019076427A1 (en) * 2017-10-16 2019-04-25 Sumitomo SHI FW Energia Oy A boiler construction
RU2742405C1 (ru) * 2017-10-16 2021-02-05 СУМИТОМО ЭсЭйчАй ФВ ЭНЕРДЖИА ОЙ Конструкция котла
AU2017436110B2 (en) * 2017-10-16 2021-12-02 Sumitomo SHI FW Energia Oy A boiler construction
US11209158B2 (en) 2017-10-16 2021-12-28 Sumitomo SHI FW Energia Oy Boiler construction having a boiler pressure body support system
EP3982043A1 (de) * 2017-10-16 2022-04-13 Sumitomo SHI FW Energia Oy Kesselkonstruktion

Also Published As

Publication number Publication date
US20080276885A1 (en) 2008-11-13
CN101303121A (zh) 2008-11-12
FI124485B (fi) 2014-09-30
CA2630751A1 (en) 2008-11-08
FI20075325A0 (fi) 2007-05-08
FI20075325L (fi) 2008-11-09
BRPI0801481A2 (pt) 2008-12-30
CN101303121B (zh) 2012-01-11
BRPI0801481A8 (pt) 2016-04-12

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