EP1785668A1 - Schweissrahmen für eine Membranwand - Google Patents

Schweissrahmen für eine Membranwand Download PDF

Info

Publication number
EP1785668A1
EP1785668A1 EP06017512A EP06017512A EP1785668A1 EP 1785668 A1 EP1785668 A1 EP 1785668A1 EP 06017512 A EP06017512 A EP 06017512A EP 06017512 A EP06017512 A EP 06017512A EP 1785668 A1 EP1785668 A1 EP 1785668A1
Authority
EP
European Patent Office
Prior art keywords
membrane wall
frame
clad
longitudinal
membrane
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Withdrawn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
EP06017512A
Other languages
English (en)
French (fr)
Inventor
Huibregt Van Hengel
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.)
VISSER AND SMIT HANAB BV
Original Assignee
VISSER AND SMIT HANAB 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 VISSER AND SMIT HANAB BV filed Critical VISSER AND SMIT HANAB BV
Publication of EP1785668A1 publication Critical patent/EP1785668A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F22B37/107—Protection of water tubes
    • F22B37/108—Protection of water tube walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05001—Preventing corrosion by using special lining materials or other techniques

Definitions

  • the proposal is to mount a membrane wall, or part thereof, of an incinerator in a special frame during cladding, wherein the steam pipes of carbon steel (e.g. in the range from ST35-8 tot 13 chrome) are provided with a protecting, nickel containing (e.g. stainless steel (RVS)) covering by means of clad welding (preferably straight clad welding, i.e. weld beads extending in longitudinal direction).
  • RVS stainless steel
  • the membrane wall is e.g. provided for a waste incinerator.
  • the membrane wall serves as side boundary of the incineration space, the temperature of which can be in the range of e.g. 700-800 degrees Celsius.
  • the membrane wall is cooled by the steam guided by vertically upward extending steam pipes.
  • the membrane wall can however also be provided for different incinerators and possibly be cooled by another fluid flowing through the pipes, like water.
  • the membrane wall can be provided as separation wall or as bulkhead (exposed to the fire at two or one side, respectively).
  • the side of the membrane wall facing the fire and the corroding environment is protected by clad welding.
  • the invention offers most advantages with a membrane wall that must be protected at only one side.
  • a membrane wall is given in US-A-3.404.663 (particularly fig. 5 and 6) or EP-A-1.493.968 (particularly fig. 1).
  • the membrane wall is made of a plurality of in a common plane provided, parallel and straight steel tubes with round cross section, wherein the spacing between two neighbouring tubes is filled with a solid steel strip that is welded to both tubes, and wherein the strip is provided in the area of the smallest distance between the tubes.
  • the tubes have closed peripheral walls and super heated steam passes there through.
  • Convenient RVS qualities contain Fe, C, alloying substances and also Ni and Cr.
  • the layer thickness of the clad weld layer is preferably between 1.8 and 2.5 cm.
  • the initially substantially flat membrane wall is maintained in a curved shape by plastically deforming it into at least one, preferably at least two mutually perpendicular directions by bending.
  • the membrane wall is mounted to the frame such that it, or a part of it, such as a peripheral wall, can displace, such as shift, within its plane in at least one, preferably two mutually perpendicular directions. This can e.g. be obtained by mounting the membrane wall to the frame by clamping.
  • the plastically deforming bending is preferably carried out such that the membrane wall is curved in two directions, wherein its convex (i.e. bulging) side is clad welded. Due to the contraction at the clad welding side due to clad welding, the plastically (and thus permanent) flexural deformation that is given to the membrane wall before clad welding, compensated.
  • the membrane wall is flexed plastically in such a rate, that after clad welding and removing from the welding frame, the permanent flexural deformation that is given to the membrane wall, is substantially compensated, such that a substantially flat, at a single side clad welded membrane wall is obtained.
  • the membrane wall is pre-flexed, taking account of the to be expected contraction due to clad welding.
  • the longitudinal contraction can measure 100 mm with a 6 m long membrane wall.
  • the welding frame preferably has a plate, approximately corresponding to the length and width of the membrane wall and having a curvature corresponding to the desired curvature in longitudinal and width direction of the membrane wall.
  • the welding frame is designed to simultaneously mount two membrane walls substantially mirror symmetric and opposite each other in a lying position.
  • the drawing illustrates in the single figure a part of a preferred embodiment of a welding frame according to the invention. Illustrated are two elongate, flat form plates (form elements/form surfaces) that mutually registered lay opposite each other and of which the longitudinal ends have a smaller spacing than their centres. Between their centres and their longitudinal parts the form plates follow a smoothly curved shape, substantially according to a circle arc segment. The form plates are kept in the in a single direction curved shape at mutual distance by rod like spacers, which obviously have a smaller length at the longitudinal ends compared to closer to the longitudinal centres of the form plates.
  • the form plates are at their lower longitudinal end commonly pivoting mounted in a space frame, to move between substantially horizontal and vertical positions.
  • a flat membrane wall (not shown in the drawing) can be mounted at the top side of the upper form plate.
  • a rigid central shaft (profile element; spacer) is placed between the form plate and the membrane wall.
  • the central shaft (not shown in the drawing) extends centrally across the form plate in longitudinal direction, has a constant height along its length, is curved in longitudinal direction to follow the curvature of the form plate, and extends at least to the longitudinal ends of the membrane wall.
  • the membrane wall has a smaller width compared to the form plate, such that the form plate projects at both sides beyond the membrane wall.
  • a second rigid shaft is located onto the longitudinal edge of the membrane wall at both sides of the shaft.
  • This second shaft has a shape and dimension substantially similar to the central shaft.
  • the rods are tightly pressed onto the membrane wall by tightening the bolts.
  • the cross rods push with their central part directly onto the membrane wall and press the centre of the membrane wall with the under side onto the central shaft.
  • the cross rods press directly onto the second shafts.
  • the second shafts press directly onto the longitudinal edges of the membrane wall and press the longitudinal edges of the membrane wall with the under side onto the top side of the form plate.
  • the membrane wall is curved plastically in the longitudinal and cross direction.
  • the assembly is then positioned vertically, after which the clad welding can be carried out.
  • a welding robot is located in the space frame.
  • weld beads are put on the membrane wall, wherein said weld beads extend mutually parallel in the longitudinal direction of the membrane wall from the one to the opposite longitudinal end. In sideways direction, the weld beads merge without a gap, such that a tight, clad welded cover is created.
  • the two membrane walls that are mounted to the assembly are simultaneously clad welded, wherein preferably the weld front continuously are opposite each other, relative to the symmetry plane between both form plates.
  • cross rods are thickened at both their longitudinal ends or have projections corresponding to the height of the second shafts.
  • the cross rods can have a curved shape according to the desired curved shape of the membrane wall.
  • the form plates can be curved in two directions according to the desired curvature of the membrane wall.
  • the central shaft can be eliminated.
  • the shape plates can be replaced by another frame, e.g. made from sections.
  • the welding frame can have a different shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
EP06017512A 2005-08-23 2006-08-23 Schweissrahmen für eine Membranwand Withdrawn EP1785668A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1029781 2005-08-23

Publications (1)

Publication Number Publication Date
EP1785668A1 true EP1785668A1 (de) 2007-05-16

Family

ID=37888224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06017512A Withdrawn EP1785668A1 (de) 2005-08-23 2006-08-23 Schweissrahmen für eine Membranwand

Country Status (1)

Country Link
EP (1) EP1785668A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404663A (en) 1965-12-29 1968-10-08 Combustion Eng Prevention of furnace corrosion
JPS59133913A (ja) * 1983-01-20 1984-08-01 Ishikawajima Harima Heavy Ind Co Ltd 長尺な鋼材の曲面加工装置
FR2585270A1 (fr) * 1985-07-26 1987-01-30 Roland Man Druckmasch Cintreuse pour le guide tubulaire d'un dispositif d'enfilage du papier mobile dans les trois dimensions, utilisable dans une presse a imprimer rotative
EP0667487A1 (de) * 1994-02-15 1995-08-16 Sumitomo Chemical Company, Limited Rohrbiegegerät und Verfahren
EP1493968A2 (de) 2003-07-04 2005-01-05 VISSER & SMIT HANAB B.V. Membranwand

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404663A (en) 1965-12-29 1968-10-08 Combustion Eng Prevention of furnace corrosion
JPS59133913A (ja) * 1983-01-20 1984-08-01 Ishikawajima Harima Heavy Ind Co Ltd 長尺な鋼材の曲面加工装置
FR2585270A1 (fr) * 1985-07-26 1987-01-30 Roland Man Druckmasch Cintreuse pour le guide tubulaire d'un dispositif d'enfilage du papier mobile dans les trois dimensions, utilisable dans une presse a imprimer rotative
EP0667487A1 (de) * 1994-02-15 1995-08-16 Sumitomo Chemical Company, Limited Rohrbiegegerät und Verfahren
EP1493968A2 (de) 2003-07-04 2005-01-05 VISSER & SMIT HANAB B.V. Membranwand

Similar Documents

Publication Publication Date Title
JP4681957B2 (ja) 耐振動管支持体
KR20120049425A (ko) 파이프 용접 변형 방지용 지그장치
KR101697234B1 (ko) 기둥과 보의 강접합 구조물
KR950000285A (ko) 용접방법
KR920001577B1 (ko) 소구경 금속관의 휨가공장치
EP1785668A1 (de) Schweissrahmen für eine Membranwand
CA2161624C (en) Continuously slitted roll-on tube shield
KR101076220B1 (ko) 공랭식 증기응축 설비용 증기 응축 전열관 블레이징 장치
JP2004003697A (ja) 横置きエレメントの支持装置
KR101326291B1 (ko) 교량용 신축이음장치
JP5931618B2 (ja) ボイラ水壁部の外装板支持構造
CN110043882B (zh) 废热回收锅炉及支承方法
US20160281976A1 (en) Heat transfer pipe support structure and waste heat recovery boiler
US6550303B2 (en) Die for pipe bending apparatus
CN108351063B (zh) 用于高温工业槽和设备的热绝缘系统
JP4990317B2 (ja) 鉄骨構造物
RU212037U1 (ru) Крепление пояса жёсткости к экрану котла
JP2000187093A (ja) 中性子束計測案内管支持装置
JP3358576B2 (ja) 被加熱材の保温部材
RU2567971C1 (ru) Листовая панель с рёбрами и способ её изготовления
KR20110088908A (ko) 무용접식 고정앙카소켓 및 그를 이용한 배관 구조
US20170297070A1 (en) Flat bar and method of making same
RU65805U1 (ru) Устройство для аргонодуговой сварки труб из металлического листа
JP5244536B2 (ja) 付属品取付け用ブラケット及びこれの取付け方法
KR910000954B1 (ko) 신축이음구의 벨로우즈 용접방법

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20071115

17Q First examination report despatched

Effective date: 20071221

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20120301