US3844254A - Furnace having walls defined by tube membranes - Google Patents

Furnace having walls defined by tube membranes Download PDF

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Publication number
US3844254A
US3844254A US00366115A US36611573A US3844254A US 3844254 A US3844254 A US 3844254A US 00366115 A US00366115 A US 00366115A US 36611573 A US36611573 A US 36611573A US 3844254 A US3844254 A US 3844254A
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US
United States
Prior art keywords
tube
membranes
corner
furnace
water
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.)
Expired - Lifetime
Application number
US00366115A
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English (en)
Inventor
I Astrom
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.)
Goetaverken Angteknik AB
Original Assignee
Goetaverken Angteknik AB
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 Goetaverken Angteknik AB filed Critical Goetaverken Angteknik AB
Application granted granted Critical
Publication of US3844254A publication Critical patent/US3844254A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F22B37/36—Arrangements for sheathing or casing boilers
    • 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

Definitions

  • corner tubes are free from the adjacent membranes, but are retained thereto by means of special clamping means.
  • furnaces With certain types of furnaces the risk of explosions or forceful puffs of combustion gases is imminent. So is for instance the case with different types of refuse and waste combustion furnaces, especially furnaces for the combustion of waste liquor from the cellulose pulp manufacture. During the combustion of such liquor a chemical residue is formed at the bottom of the hearth, and if water from a cracked tube comes into contact with this residue a forceful explosion will occur, which will deform the walls and may result in more tubes being cracked.
  • Furnaces of this type are often designed with a quadrilateral cross section, and the damages are most likely to occur near the corners of the furnace.
  • the membranes are fitted at an angle to the tube forming the corner, and if the walls, following an explosion, are bent outwards the attachments at the corner tube will be heavily stressed, which easily will lead to a cracking of some tube, or tubes.
  • the furnace is therefore designed in such a manner, that a tube located at each corner of the furnace is free from the adjacent membranes and is connected to the latter by means of clamps arranged externally of the walls and adapted for securing the blocks to the walls, said clamp at the pertaining corner tube extending to each direction therefrom at least over the outermost tube in the adjacent membrane.
  • the drawing shows by way of example a corner portion of a furnace belonging to a waste liquor combustion plant.
  • the walls of the furnace are composed of a number of water tubes 10, which within each side wall of the furnace are welded together to membranes.
  • the faces of the tubes turned towards the furnace are covered by blocks 11 of fire resistant material, which are forced towards the tubes by means of wedge shaped members 12. These are retained at the wall by means of clamps I3 and bolts 14.
  • two membranes arranged at an angle to each other and meeting each other at a corner are not interconnected directly by welding, but are locked together by means of a separate tube 15, which forms part of the water circulation system, but is not welded to either of the membranes.
  • Tube 15 is, however, connected to the adjacent membranes by means of the clamps 13 used for retaining the wedge shaped members 12 at the corner portion.
  • clamps 13 are designed in such a manner that they from the corner tube extend over at least one, preferably over two tubes in the adjacent membrane.
  • the walls of big furnaces may each contain more than one membrane, so a single unit does not extend from one corner tube to the other.
  • shape of the blocks and of the wedge members, as well as of the clamps is not limited to the examples shown in the drawing, but will have to be suited to the actual application.
  • the essential part is that the corner tubes are free from the membranes, and that the clamps at the corners have sufficient length to provide the required strength.

Landscapes

  • 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)
  • Paper (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US00366115A 1972-06-19 1973-06-01 Furnace having walls defined by tube membranes Expired - Lifetime US3844254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE08035/72A SE364104B (de) 1972-06-19 1972-06-19

Publications (1)

Publication Number Publication Date
US3844254A true US3844254A (en) 1974-10-29

Family

ID=20272962

Family Applications (1)

Application Number Title Priority Date Filing Date
US00366115A Expired - Lifetime US3844254A (en) 1972-06-19 1973-06-01 Furnace having walls defined by tube membranes

Country Status (8)

Country Link
US (1) US3844254A (de)
JP (1) JPS571748B2 (de)
CA (1) CA988370A (de)
DE (1) DE2328943A1 (de)
FI (1) FI54023C (de)
FR (1) FR2190251A5 (de)
GB (1) GB1428418A (de)
SE (1) SE364104B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012767A (en) * 1989-10-03 1991-05-07 Leighton Industries, Inc. Heat exchanger tube spacers
US5542378A (en) * 1994-06-02 1996-08-06 Saint-Gobain/Norton Industrial Ceramics Corp. Waterwall tube block design
CN109028010A (zh) * 2018-07-11 2018-12-18 哈尔滨锅炉厂有限责任公司 用于管屏的滑动定位装置及管屏管子定位方法
US11022342B2 (en) * 2018-06-26 2021-06-01 Noritz Corporation Heat exchanger and water heater including same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4961761A (en) * 1989-08-18 1990-10-09 Foster Wheeler Energy Corporation Cyclone separator wall refractory material system
JPH0471359U (de) * 1990-11-02 1992-06-24

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1970585A (en) * 1931-08-11 1934-08-21 Fuller Lehigh Co Furnace
US2022830A (en) * 1930-05-21 1935-12-03 American Eng Co Ltd Fluid-cooled wall structure
US2368265A (en) * 1940-07-27 1945-01-30 Babcock & Wilcox Co Furnace wall
US3404663A (en) * 1965-12-29 1968-10-08 Combustion Eng Prevention of furnace corrosion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2022830A (en) * 1930-05-21 1935-12-03 American Eng Co Ltd Fluid-cooled wall structure
US1970585A (en) * 1931-08-11 1934-08-21 Fuller Lehigh Co Furnace
US2368265A (en) * 1940-07-27 1945-01-30 Babcock & Wilcox Co Furnace wall
US3404663A (en) * 1965-12-29 1968-10-08 Combustion Eng Prevention of furnace corrosion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012767A (en) * 1989-10-03 1991-05-07 Leighton Industries, Inc. Heat exchanger tube spacers
US5542378A (en) * 1994-06-02 1996-08-06 Saint-Gobain/Norton Industrial Ceramics Corp. Waterwall tube block design
CN1117946C (zh) * 1994-06-02 2003-08-13 圣戈本陶瓷及塑料股份有限公司 水冷壁管衬块结构
US11022342B2 (en) * 2018-06-26 2021-06-01 Noritz Corporation Heat exchanger and water heater including same
CN109028010A (zh) * 2018-07-11 2018-12-18 哈尔滨锅炉厂有限责任公司 用于管屏的滑动定位装置及管屏管子定位方法

Also Published As

Publication number Publication date
GB1428418A (en) 1976-03-17
JPS571748B2 (de) 1982-01-12
FR2190251A5 (de) 1974-01-25
DE2328943A1 (de) 1974-01-10
CA988370A (en) 1976-05-04
FI54023C (fi) 1978-09-11
FI54023B (fi) 1978-05-31
JPS4956467A (de) 1974-05-31
SE364104B (de) 1974-02-11

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