EP0236678A1 - Tragestruktur für Isolationsmaterial, insbesondere für die thermische Isolation von heissen und grossen Flächen - Google Patents

Tragestruktur für Isolationsmaterial, insbesondere für die thermische Isolation von heissen und grossen Flächen Download PDF

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Publication number
EP0236678A1
EP0236678A1 EP87100328A EP87100328A EP0236678A1 EP 0236678 A1 EP0236678 A1 EP 0236678A1 EP 87100328 A EP87100328 A EP 87100328A EP 87100328 A EP87100328 A EP 87100328A EP 0236678 A1 EP0236678 A1 EP 0236678A1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
metal elements
rods
elements
guides
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
Application number
EP87100328A
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English (en)
French (fr)
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EP0236678B1 (de
Inventor
Alberto Ziccardi
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Individual
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Individual
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Publication date
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Priority to AT87100328T priority Critical patent/ATE59697T1/de
Publication of EP0236678A1 publication Critical patent/EP0236678A1/de
Application granted granted Critical
Publication of EP0236678B1 publication Critical patent/EP0236678B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0801—Separate fastening elements
    • E04F13/0803—Separate fastening elements with load-supporting elongated furring elements between wall and covering elements
    • E04F13/0805—Separate fastening elements with load-supporting elongated furring elements between wall and covering elements with additional fastening elements between furring elements and the wall
    • E04F13/0808—Separate fastening elements with load-supporting elongated furring elements between wall and covering elements with additional fastening elements between furring elements and the wall adjustable in several directions one of which is perpendicular to the wall
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts

Definitions

  • the present invention relates to a structure for bearing insulating material, in particular for the thermoinsulation of hot and wide surfaces.
  • thermoinsulation of the outer walls of tanks, stacks, heat exchangers and similar apparatuses having temperatures of work ranging from 500 to 650 °C is conventionally carried out by means of outer finishing sheet metal elements stiffly secured to the hot walls and mounted in a spaced position from the latter by means of a supporting carpentry. It is however known that any body undergoing an increasing temperature will deform according to the thermal expansion coefficient thereof.
  • the sheet metal elements of the above stated insulating structures will thus deform owing to a double effect: the first one consists in the transmission of the hot wall dilatations to the sheet metal elements through the supporting carpentry which, as previously stated, is rigidly secured to both the hot surface and the same sheet metal elements; the second one consists in the flow of heat transmitted outwardly through the same carpentry which acts as a thermal bridge.
  • the latter deformation is very important due to the high value of the expansion coefficient of the sheet metal element materials.
  • the insulating mate­rials generally used for carrying out the insulating structures suitable for working at high temperatures are further subjected to contractions, thus broadening the drawbacks due to the hot surface expansion.
  • US-A-2 435 172 (YOUNG) relates to a stack for furnaces whe­rein a framework is provided for supporting outer walls mounted in a spaced relationship with respect to an inner refractory wall.
  • US-A-4 369 032 (LOWRANCE) describes a reheat furnace compri­sing a plurality of resilient means to avoid overloading of a rigid frame mounted on refractory elements.
  • GB-A-829 201 LACLEDE-CHRISTY Co.
  • FR-A-1 413 235 (DIDIER-WERKE A.G.) describes the construction of walls for furnaces.
  • DE-A-3 032 359 (LOOS) and LU-A-68 748 (BPB INDUSTRIES Ltd.) describe metal structures for supporting coat members of building walls.
  • the mentioned supporting structures may be advantageously used at low temperatures (in the range of room temperatures), but are obviously inadeguate when tempe­rature increases as in a furnace or in a heat exchanger.
  • the connecting elements of the structure will quickly deform due to high temperatures and, generally, they are adapted for being mounted onto flat walls only.
  • the bearing structure according to the present invention comprises a supporting spacer and outer finishing sheet me­tal elements mounted thereon, and is essentially characteri­zed in that said spacer and hot surface directly engage each other, means to allow for dimensional movements of said spacer and hot surface due to the thermal expansions of the latter being provided, said means keeping the mentioned in­sulating sheet metal elements lying still at a stationary position.
  • Said means allowing for the dimensional movements of the structure of the invention consist, according to a further feature thereof, of a plurality of vertical sections or rods provided at one side with means for engaging said sheet metal elements and also allowing for horizontal displacements of said rods with respect to said sheet metal elements and, at the other side, with brackets or stirrups for the engagement of the hot surface in vertical sliding relationship with the same bearing structure.
  • the latter further characterizes in that horizontal support guides or rails secured to said sheet metal elements are provided, said guides cooperating with the relevant engaging means of the rods.
  • said means adapted to connect said rods and the mentioned sheet metal elements consist of approximately C cross sectioned plates.
  • each plate is provided with an outer vertical stopping member, said plates further comprising a plurality of rolling-contact bearings mounted on the vertical and low horizontal sides of said C cross section, the mentioned bearings allowing said horizontal guides of the sheet metal elements to slide within the mentioned shaped plates of the rods.
  • the said means for connecting said rods and said sheet metal elements consist, according to a characteristic embodiment of the invention particularly adapted to the thermoinsula­tion of curve surfaces, of shaped metal plates into sliding engagement with said support guides of the outer sheet metal elements; resilient means are further provided to allow for variations in the distance between said rods and said sheet metal elements due to the radially directed thermal expan­sions of the hot surfaces.
  • the invention shows the remarkable advantage to allow for thermal expansion and contraction of the structure, due to the deformation of the hot surfaces to be insulated, by means of a particular connection between the rods of the bearing structure and the same outer sheet metal elements.
  • a characteristic connection allows for use of outer sheet metal elements having a continuous surface to thermoinsulate flat and curve hot surfaces, any inner stress capable of deforming, detaching or breaking the outer sheet metal elements being avoided.
  • the heat dispersions through thermic bridges are remarkably reduced, this result being obtained by means of the small cross section of the bearings of the structure of the invention and the light material of the vertical sections which are adapted to increase the course of the heat flow directed outwardly.
  • the layers of thermoinsulating material suitably arranged in the structure of the invention break this course off and thus further diminish the heat di­ spersions.
  • the present invention shows the advantage that the supporting structure may resist high temperatures and accordingly be directly mounted on the hot wall to be insulated without any intermediate layer of refractory material.
  • the structure of the invention allows for a wider range of deformation in all directions and, accordingly, may work at higher temperatures than the conventional structures.
  • the bearing structure as shown in the figures 1 to 5 is particularly suitable for the thermoinsulation of flat surfaces, that one as shown in the figures 6 to 8 being ada­pted to thermoinsulate curve surfaces (e.g. the outer walls of tanks and converters).
  • the bearing structure of the invention essentially consists of a supporting spacer and outer finishing sheet metal elements.
  • the supporting spacer comprises a plurality of vertical sections or rods 1 made of metallic material and parallely mounted in front of the hot surface to be insulated 2.
  • the side of said rods facing said surface 2 comprises a plurali­ty of supporting brackets or stirrups 3 (figures 3 and 4) one side thereof being welded on the surface 3 itself, the opposite side of said brackets being secured to the rods 1 by means of grooved small disks 4 which are slidingly mounted into a corresponding slit provided at the rod 1 side which faces the hot surface 2.
  • Gaskets of ceramic material 5 are arranged interposed betwennenen the components of the stirrup 3 and the relevant disk 4 to reduce the heat transfer towards the bearing structure.
  • At the opposite side of the rods 1 is secured at least one shaped plate 6 (fig.2) preferably secured on the upper por­tion of each rod.
  • the plates 6 are made of metallic C cross sectioned elements (fig.4), the lower end thereof comprising an outer vertical member 7.
  • the vertical side 8 of the plates 6 is provided with two rolling-contact bearings 9 mounted horizzontally and ali­gned, the axis of rotation thereof being perpendicularly di­rected as compared to the rod 1 axis which carries said pla­te.
  • Each bearing 9 further comprises a peripheral groove 10.
  • the lower horizontal side 11 of the plates 6 is on the con­trary equipped with a rolling-contact bearing 12, the axis of rotation thereof being directed parallel with respect to the axis of the corresponding rod 1.
  • the outer finishing sheet metal element comprises a corruga­ ted sheet 13 made of aluminium, the inner side thereof fa­cing the plates 6 (and mounted at the same height as those one) being provided with a supporting metallic guide or rail 14.
  • the latter essentially consists of a shaped metallic section of an approximately G cross section (fig.4), the upper end 15 thereof being positioned, when the structure is assembled, into the groove 10 of the bearings 9, the lower and reversed base 16 thereof being on the contrary mounted against the inner side of the vertical member 7.
  • the supporting plate 17 of fig.5 is mounted on the lower portion of the rods 1 and differs from the previously described plated 6 in that it lacks of the bearings and in the section shape. Said plate acts as a fixed point of the supporting structure and guides the thermal expansions of the structure in the desired directions.
  • the thermal insulating material 18 flexible ceramic fibers and rock wool
  • the vertical expansions of the hot surface 2 are allowed through the sliding fit between the brackets 3 and the rods 1; the sheet metal elements 13 are not influenced by the horizontal displacements of the surface 2 (and then of the rods 1), due to the particular sliding fit between the plates 6 and the supporting rails 14.
  • the embodiment of figures 6 to 8 refers to a curve hot sur­face 2.
  • the bearing structure is provided with rods 1 mounted in front of the surface 2 and retained thereon by means of brackets 3 and the relevant grooved small disks 4.
  • the side of the rods 1 facing the sheet metal element 13 comprises C shaped plates 19 similar to the already described plates 6, but lacking of any retaining member and bearings.
  • the sheet metal element 13 carries mounted thereon horizontal guide means mounted at the same height of the plates 19 and adapted to be slidingly mounted into the latter.
  • Said guide means consist of light lattice beams 20 horizontally secured to the sheet metal element 13; the portion of said lattice beam 20 engaging into the plates 19 of the rods 1 is covered by plates 21.
  • Telescopic spring members 22 allowing for radial displacements of the bearing structure relative to the elements 13 are provided to avoid that the sheet metal element 13 disengages from the structure of the rods 1.
  • the hollow space between the surface 2 and the sheet metal element 13 is fitted with thermal insulating material.
  • Both of the above embodiments may comprise a single sheet metal element having an uninterrupted surface; as a matter of fact, the dimensional movements of the hot surface are not transmitted to the outer sheet metal element (which is kept lying still at a stationary position with respect to the relevant supporting structure).

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Insulation (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Building Environments (AREA)
  • Insulating Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)
EP87100328A 1986-01-28 1987-01-13 Tragestruktur für Isolationsmaterial, insbesondere für die thermische Isolation von heissen und grossen Flächen Expired - Lifetime EP0236678B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100328T ATE59697T1 (de) 1986-01-28 1987-01-13 Tragestruktur fuer isolationsmaterial, insbesondere fuer die thermische isolation von heissen und grossen flaechen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1921086 1986-01-28
IT19210/86A IT1189057B (it) 1986-01-28 1986-01-28 Struttura di sostegno per materiale di coibentazione,in particolare per l'isolamento termico di superfici estese a temperature elevata

Publications (2)

Publication Number Publication Date
EP0236678A1 true EP0236678A1 (de) 1987-09-16
EP0236678B1 EP0236678B1 (de) 1991-01-02

Family

ID=11155825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100328A Expired - Lifetime EP0236678B1 (de) 1986-01-28 1987-01-13 Tragestruktur für Isolationsmaterial, insbesondere für die thermische Isolation von heissen und grossen Flächen

Country Status (5)

Country Link
EP (1) EP0236678B1 (de)
AT (1) ATE59697T1 (de)
DE (1) DE3766852D1 (de)
ES (1) ES2019886B3 (de)
IT (1) IT1189057B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396818A1 (de) * 1989-05-10 1990-11-14 Constral Ag Halteanordnung für Fassadenverkleidungsplatten aus Kunststein

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435172A (en) * 1945-03-31 1948-01-27 Chicago Fire Brick Co Stack for furnaces
GB829201A (en) * 1956-10-05 1960-03-02 Laclede Christy Company Suspended furnace wall construction
FR1413235A (fr) * 1964-09-23 1965-10-08 Didier Werke Ag Parois de foyer, en particulier parois postérieures de fours industriels
LU68748A1 (de) * 1972-11-07 1974-01-18
DE3032359A1 (de) * 1980-08-28 1982-03-11 Jasper, Wolf-Dieter, 6380 Bad Homburg Unterkonstruktion zur befestigung einer wandbekleidung an einer wand
US4369032A (en) * 1979-07-02 1983-01-18 Inland Steel Company Reheat furnace

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435172A (en) * 1945-03-31 1948-01-27 Chicago Fire Brick Co Stack for furnaces
GB829201A (en) * 1956-10-05 1960-03-02 Laclede Christy Company Suspended furnace wall construction
FR1413235A (fr) * 1964-09-23 1965-10-08 Didier Werke Ag Parois de foyer, en particulier parois postérieures de fours industriels
LU68748A1 (de) * 1972-11-07 1974-01-18
US4369032A (en) * 1979-07-02 1983-01-18 Inland Steel Company Reheat furnace
DE3032359A1 (de) * 1980-08-28 1982-03-11 Jasper, Wolf-Dieter, 6380 Bad Homburg Unterkonstruktion zur befestigung einer wandbekleidung an einer wand

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396818A1 (de) * 1989-05-10 1990-11-14 Constral Ag Halteanordnung für Fassadenverkleidungsplatten aus Kunststein

Also Published As

Publication number Publication date
EP0236678B1 (de) 1991-01-02
IT1189057B (it) 1988-01-28
DE3766852D1 (de) 1991-02-07
ES2019886B3 (es) 1991-07-16
ATE59697T1 (de) 1991-01-15
IT8619210A0 (it) 1986-01-28

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