EP2852801A1 - Corps d'isolation thermique et procédé de fabrication dudit corps - Google Patents

Corps d'isolation thermique et procédé de fabrication dudit corps

Info

Publication number
EP2852801A1
EP2852801A1 EP13725339.9A EP13725339A EP2852801A1 EP 2852801 A1 EP2852801 A1 EP 2852801A1 EP 13725339 A EP13725339 A EP 13725339A EP 2852801 A1 EP2852801 A1 EP 2852801A1
Authority
EP
European Patent Office
Prior art keywords
individual parts
doing
connecting elements
insulating body
body according
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Withdrawn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
EP13725339.9A
Other languages
German (de)
English (en)
Inventor
Bodo Benitsch
Sinisa Milovukovic
Robert Hauser
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.)
SGL Carbon SE
Original Assignee
SGL Carbon SE
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 SGL Carbon SE filed Critical SGL Carbon SE
Publication of EP2852801A1 publication Critical patent/EP2852801A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/028—Composition or method of fixing a thermally insulating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
    • F16L59/025—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves with more then two segments
    • 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
    • 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
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • F27D1/0009—Comprising ceramic fibre elements
    • 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
    • F27D1/0003—Linings or walls
    • F27D1/0033—Linings or walls comprising heat shields, e.g. heat shieldsd
    • 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
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • 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
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • F27D1/045—Bricks for lining cylindrical bodies, e.g. skids, tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2313/00—Elements other than metals
    • B32B2313/04—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/19—Sheets or webs edge spliced or joined

Definitions

  • the present invention relates to a heat insulating body made of a carbonized fibers and / or graphitized fibers comprising material, in particular hard felt, in particular for lining a high temperature furnace, wherein the heat insulation body is assembled from at least two individual parts.
  • High-temperature processes which occur, for example, at over 800 ° C under an inert atmosphere, place high thermal and mechanical demands on the insulating materials used.
  • the production of a heat insulating body of several items offers the advantage of a lower raw material blend and a more efficient high temperature aftertreatment of the felt material.
  • EP 1 852 252 B1 discloses a method for producing high-temperature-resistant insulating bodies, in which, inter alia, a plurality of curved segments are formed from a material based on a graphite expanded material compressed to a density between 0.02 and 0.3 g / cm 3 hollow cylindrical component are assembled. The cohesion of the individual segments is ensured by a carbonizable binder, which areal anisotropic Contains graphite particles. On the inner surface of the hollow cylindrical insulating body, a graphite foil is further arranged.
  • WO 201 1/106580 A2 discloses an insulator made of a carbon fiber material for a reactor, which is composed of a plurality of plate-like individual components. The individual components may be coupled by "tongue-and-groove" connectors using further connectors.
  • a heat insulating body with the features of claim 1 and in particular by a heat insulating body comprising carbonized fibers and / or graphitized fibers material, in particular for lining a high temperature furnace, wherein the heat insulation body is assembled from at least two individual parts, wherein at least two assembled individual parts each have at least one connecting element and the connecting elements of the at least two assembled individual parts with the formation of an undercut at least form-fitting or even interlocking positive and non-positive.
  • At least two connecting elements are provided on at least two assembled individual parts-that is, at least at individual sections of the joining surfaces on which the individual parts are joined together-connecting elements are provided which engage one another at least in a form-fitting manner to form an undercut. Due to the undercut, the items are held together securely on the mating joining surfaces - preferably in 5 of the 6 mutually orthogonal spatial directions - and can also under the conditions of use in one
  • High-temperature furnace can no longer be separated. An elaborate bonding of the items can thus be dispensed with.
  • the movement in the 6th spatial direction is preferably inhibited via a non-positive connection.
  • Another particular advantage of the invention is that the undercut forms a barrier against heat conduction losses at the joint surfaces and thus additional insulating components can be saved to cover the joints. Because no accumulation of different materials In addition, discontinuities with regard to the relevant material properties, such as thermal conductivity, density, compressive strength or flexural strength, can be reliably avoided. Therefore, the invention enables a simple to manufacture, self-supporting and homogeneous with respect to the relevant material parameters heat insulation body, which can be easily adapted to different application specifications, eg to different furnace geometries due to the structure of individual parts.
  • the individual parts are held together at least in the form-fitting manner at the contacting joining surfaces in 5 of the 6 mutually orthogonal spatial directions.
  • a movement in the sixth spatial direction is preferably inhibited by a purely non-positive connection.
  • all individual parts of which the heat insulation body is joined together each have at least one connecting element, wherein the connecting elements of at least two assembled individual parts interlock to form an undercut.
  • the individual parts are joined together exclusively by means of the connecting elements, ie no gluing, clamping or the like are used.
  • the connecting elements of the at least two assembled individual parts engage in one another in a non-positive manner while forming a press fit.
  • the interference fit, in addition to the positive connection and a frictional connection is created, which further increases the stability of the connection against unintentional disconnection.
  • a sol- Combination of positive and non-positive connection results in a joint, which ensures a reliable and permanent cohesion of the items in question even with high thermal and mechanical stress.
  • the connecting elements of the at least two assembled individual parts are molded directly to the individual parts of the heat insulation body according to a preferred embodiment of the invention. That is, the connecting elements each form an integral part of the relevant item of the heat insulation body. Thus, the costly attachment of additional components can be avoided. In addition, the strength of the joint is particularly high when there is a material connection between the individual parts and the associated connecting elements.
  • At least one of the individual parts and preferably all individual parts, including the connecting elements are made of a homogeneous felt composed of carbonized fibers and / or graphitized fibers.
  • Such felts have a high temperature resistance and at the same time a high mechanical strength, so that they are particularly suitable as a material for thermal insulation in high-temperature environments.
  • the present invention is at least one of the individual parts and are preferably all items of felt with a density between 0.01 and 0.50 g / cm 3 , preferably between 0.10 and
  • Felts with such properties have proven to be particularly favorable for the production of heat insulating bodies of the type described above.
  • At least one of the individual parts and preferably all individual parts is made of felt, which is composed of carbonized fibers and / or graphitized fibers having a length of less than 10,000 mm, preferably less than 1, 000 mm and more preferably less than 100 mm.
  • At least one of the individual parts and preferably all individual parts is made of felt which contains a carbon-containing binder.
  • all known binders can be used for this purpose, in particular with binders good results being obtained, which are selected from the group consisting of phenolic resins, pitches, furan resins, phenyl esters, Epoxy resins and any mixtures of two or more of the aforementioned compounds. Felts with such binders are particularly favorable materials for insulation.
  • an advantageous embodiment of the present invention provides that at least one of the individual parts and preferably all individual parts is made of felt, which has a measured according to DIN 51936 thermal conductivity at 2000 ° C of at most 1, 5 W / (mK) and preferred of at most 0.8 W / (mK). Thus, heat conduction losses in high-temperature systems are sufficiently prevented.
  • At least one of the individual parts and preferably all individual parts of the heat insulation body are made of felt, which has a compressive strength measured according to DIN EN 658-3 and / or one according to DIN EN 658-2 and the
  • DIN 51910 measured bending strength of at least 0.2 MPa, preferably of at least 0.5 MPa and more preferably of at least 0.8 MPa.
  • the heat insulation body as a hollow profile and preferably as a hollow cylinder.
  • a hollow profile is particularly suitable for lining the heating chamber of a high-temperature furnace.
  • the heating chamber is protected by a arranged on its inner walls hollow profile-like heat insulation body against heat loss through the inner walls.
  • High temperature furnaces often have a cylindrical heating chamber which is easily inserted through a size-matching heat-insulating hollow cylinder by insertion of the hollow cylinder, e.g. via an upper opening, can be isolated.
  • the items are flat and form a wall of the hollow profile, wherein the undercut each transverse to a surface normal the wall is effective.
  • the undercut By acting across the surface normal undercut a "tearing" of the wall is reliably avoided.
  • the undercut is effective only transversely to the surface normal of the wall. This opens up the possibility of merging or assembling the respective individual parts in a direction in which the undercut is not effective, whereby the assembly is simplified.
  • Dovetail joints can develop a force-enhancing wedge effect due to the sloping flanks of a tine and therefore offer a comparatively high strength. In particular, they can transmit both lateral forces and tensile forces.
  • the opening angle of the dovetail connections may in each case be between 5 ° and 85 °, preferably between 15 ° and 75 ° and particularly preferably between 30 ° and 60 °. Such opening angles have proven to be particularly favorable in terms of connection strength.
  • the connecting elements are designed as elongated grooves and in these matching springs, which each have mutually inclined flanks to form the undercut.
  • a "tongue-and-groove" connection suitable only for absorbing transverse forces can be expanded to a dovetail-like connection with an undercut, which absorbs both lateral forces and tensile forces.
  • the angle between two opposite inclined flanks of a spring or a groove be between 15 ° and 30 ° and particularly preferably between 20 ° and 24 °. This makes it possible to create particularly stable connections.
  • the ratio of the width of a spring to the width of the associated item is preferably between 1: 1, 5 and 1: 5 and more preferably between 1: 2 and 1: 3.
  • This embodiment is particularly favorable in terms of the thermal and mechanical properties of the manufactured heat insulation body.
  • a further embodiment of the present invention provides that the grooves and the springs seen in the longitudinal direction in sections do not form an undercut and preferably also no press fit. The individual parts can then be brought together offset from one another in such a way that the undercuts are to a certain extent bypassed and take effect only when the individual parts are brought back together in the assembled state. As a result, a particularly simple assembly is possible, because the paths that have to cover the two parts to be assembled relative to each other, are considerably shortened. Particularly advantageous is the sectionwise omission of the undercut in the case of an additional use of a press fit, by means of which force closure an additional inhibiting effect is produced. Here, the shortened paths also cause a reduced abrasion within the press fit.
  • the grooves and the springs preferably define at regular intervals areas without undercut and preferably without interference fit.
  • all 150 mm to 250 mm regions can be provided without an undercut and preferably also without an interference fit along an individual part side.
  • the heat insulation body may define a longitudinal axis and be composed of a plurality of rows of individual parts arranged one behind the other along the longitudinal axis, wherein the joining surfaces of two adjacent rows are offset relative to one another with respect to the longitudinal axis, and preferably offset by half an individual part length. This results in a stable association of the items similar to a masonry association with staggered stones. In principle, any length of hollow sections or pipes can be constructed in this way.
  • the individual parts of a row are preferably joined together without forming an undercut. This facilitates the merging of the items during assembly.
  • each of the connecting elements For reasons of easier manufacture and handling and to increase the mechanical stability, it has proven advantageous to make the edges rounded between projecting and recessed portions of each of the connecting elements, wherein preferably the radius of curvature of the rounded edges between 1 mm and 10 mm and preferably between 3 mm and 7 mm.
  • the individual parts are formed as plates, wherein the connecting elements are provided at least on two opposite narrow sides and preferably on all four narrow sides of each plate. The provision of connecting elements exclusively on two opposite narrow sides of each plate in this case allows a particularly simple production.
  • the plates are flat, with the joining surfaces extending at right angles to the flat sides of the plates. This comes especially to building up extensive wall-like structures, as they are often required in thermal insulation bodies.
  • the plates are also flat, but the joining surfaces extend in a plane which with the flat sides of the plates an angle between 1 ° and 85 °, preferably between
  • hollow profiles with a polygonal cross-section can be constructed in a simple manner.
  • curved profile structures can be approximated, so as to exploit the fact that flat items are easier to manufacture and are more flexible than curved items.
  • the joining surfaces of the flat-shaped individual parts can also form at least one step in the direction of the surface normal.
  • an embodiment has proven to be particularly favorable, in which the joining surfaces, in each case in the direction of the surface normal, are divided by the stage or by the plurality of stages into equally wide joining zones.
  • the width of the joining zone or the plurality of joining zones in which connecting elements are provided to the width of the joining zone or the plurality of joining zones, in which no connecting elements are provided, at least 1: 1 and preferably 2: 1 or 3: 1.
  • the toothed joining zone based on the component thickness preferably a greater extent than the untoothed joint zone, so that a sufficient stability is ensured.
  • Another object of the present invention is a method for producing a heat insulating body and in particular a Wegisolations- body of the type described above.
  • at least two individual parts of a material comprising carbonized fibers and / or graphitized fibers provided, at least two at least a connecting element for a positive engagement to form an undercut are provided.
  • the individual parts are then assembled to form a heat insulation body by the connecting elements are inserted into each other.
  • the interlocking of the individual parts forms a positive connection with an undercut, which reliably prevents inadvertent separation of the two individual parts during the later use of the heat insulation body.
  • the connection can optionally be supported with a non-positive press fit.
  • the connecting elements are produced by machining the surface of individual blanks from a homogeneous felt material, preferably from, in particular impregnated, soft felt or hard felt.
  • the processing can be done for example by means of grinding, milling, sawing, drilling or cutting. In this type of procedure, it is not necessary to make separate fasteners and attach to the items, so that the production of the heat insulating body is simplified. In addition, to a certain extent automatically results in avoiding foreign materials and thus a particularly uniform heat conduction behavior of the heat insulation body.
  • a press fit which is preferably at most 0.5 mm, more preferably at most 0.25 mm, and most preferably between 0.01 mm and 0.2 mm.
  • the press fit creates, in addition to the existing positive connection, a frictional connection which not only increases the mechanical strength but also ensures a uniform thermal conductivity in the area of the joining surface.
  • Fig. 1A is a perspective view of a heat insulating body according to a first embodiment of the invention.
  • Fig. 1B is a side view of the heat insulating body of Fig. 1 A.
  • FIG. 2 is a perspective view of a heat insulating body according to a second embodiment of the invention.
  • FIG. 3 is a perspective view of a heat insulating body according to a third embodiment of the invention.
  • 4A is a perspective view of an individual part of a heat insulating body according to a fourth embodiment of the invention.
  • Fig. 4B shows a plurality of assembled items as shown in FIG. 4A.
  • Fig. 5A is a perspective view of an individual part of a heat insulating body according to a fifth embodiment of the invention.
  • Fig. 5B shows several assembled items as shown in FIG. 5A.
  • a hollow cylindrical, a cylinder longitudinal axis L exhibiting heat insulating body 1 1 is used to minimize heat loss in a high temperature system.
  • the heat insulating body 1 1 is made of several individual parts 13 each made of a hard felt based on carbonized fibers.
  • the hard felt has a density of 0.2 g / cm 3 , a compressive strength of 1 MPa, a bending strength of 1 MPa and a thermal conductivity in the radial direction at 2000 ° C of 0.8 W / (mK).
  • first embodiment of the invention provides that at the radial end faces 14 of the individual parts or cylinder segments 13 connecting elements 17 are provided in the form of dovetail teeth, which interlock positively to form an undercut 19. On the other hand, no dovetail teeth 17 are provided on the axial end faces 16 of the cylinder segments.
  • the cylinder segments 13 are preferably mechanically worked after hardening and thermal treatment, such as carbonizing and optionally graphitizing, the felt material at the corresponding opposite end faces 14.
  • the dovetail teeth 17 are therefore attached directly to the cylinder segments 13. shaped.
  • a geometric oversize of 0.01 mm to 0.2 mm is provided on the corresponding surfaces.
  • the cylinder segments 13 are brought together in a direction perpendicular to the cylinder longitudinal axis L extending joining direction F1, wherein the dovetail teeth 17 engage.
  • the inclined flanks 21 of the dovetail teeth 17 form an undercut 19 that is effective in the circumferential direction and reliably prevents the cylinder segments 13 from loosening.
  • the hollow cylindrical heat insulating body 1 1 is as shown in FIGS. 1 A and 1 B composed of several rows 23 along the cylinder longitudinal axis L successively arranged cylinder segments 13, the joining surfaces 15 of two adjacent rows 23 are axially offset by half a segment length , As a result, tube-like heat insulation bodies 1 1 can be constructed in any length in any simple manner.
  • the dovetail teeth 17 preferably have an opening angle between 30 ° and 60 °. Furthermore, a uniform distribution of the dovetail teeth 17 on the two cylinder segments concerned 13 has proved to be advantageous.
  • the edges 25 between projecting and recessed portions of the dovetail teeth 17 are rounded with a radius of curvature of 5 mm, which is not visible in the illustrations of Figs. 1A and 1B.
  • dovetail teeth 17 instead of cylinder segments 13, it is also possible to connect plate-like planar individual parts 13 'with one another, so as to obtain a plate-like planar heat insulation body 1 1'.
  • Two plane parts 13 'interconnected in this way are shown in FIG.
  • dovetail teeth 17 are provided in only one of the two joining zones 28, 29.
  • swallows-tail toothing 17 could also be provided in both joining zones 28, 29.
  • Fig. 3 shows an embodiment of the invention in which instead of dovetail joints 17 tongue and groove joints 17 'are provided.
  • elongated, over the entire joint surface 15 extending grooves 30 and 31 are provided in these matching springs, wherein the edges 21 of the grooves 30 and the springs 31 are each inclined to form an undercut 19 according to an opening angle of 20 ° to 24 ° to each other ,
  • the undercut 19 formed thereby prevents, as in the embodiment according to FIG. 2, a separation of the flat individual parts 13 '.
  • an oversize of 0.01 mm to 0.2 mm is provided, resulting in a press fit when merging the flat items 13 'along the joining direction F1.
  • the ratio of the width of a spring 31 to the thickness of the associated planar member 13 ' is between 1: 2 and 1: 3.
  • the undercut 19 is interrupted at regular intervals, i. the grooves 30 and the springs 31 alternately have regions 33 with undercuts and regions 34 without undercuts.
  • two individual parts 13 ' can be arranged offset from one another such that two regions 34 meet without an undercut.
  • a sliding merging of the individual parts 13 'along a first joining direction F1 is possible, wherein the joining surfaces 15 initially come to rest loosely on each other.
  • a perpendicular to the first joining direction F1 extending second joining direction F2 reach the undercuts 19 into engagement, so that in turn results in a combination of positive and non-positive connection between the relevant items 13'.
  • oblong grooves 30 and associated springs 31 are provided on opposite end faces of a respective flat individual part 13 '.
  • the undercut 19 is in regular Interrupted intervals, ie the grooves 30 and the springs 31 have alternately areas 33 with undercut and areas 34 without undercut.
  • those joining surfaces 15 in which a groove 30 is formed extend in a plane pointing at right angles to the plane of the plate.
  • Those joining surfaces 15 which have a spring 31, however, enclose an angle between 1 ° and 85 ° with the plane of the plate.
  • two half-shells of individual elements can be initially constructed, which are connected together in a final joining process by moving along a plane.
  • oblong grooves 30 and associated springs 31 are provided on opposite end faces of a respective individual part 13 '.
  • the undercut 19 is interrupted at regular intervals, ie the grooves 30 and the springs 31 have alternately areas 33 with undercut and areas 34 without undercut.
  • the individual parts 13 have a cylindrical curvature, which makes it possible to assemble several individual parts 13 into a hollow-cylindrical component as shown in FIG. 5B. LIST OF REFERENCES:, 1 1 'heat insulation body

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermal Insulation (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Corps d'isolation thermique constitué d'un matériau contenant des fibres carbonées et/ou des fibres graphitées, en particulier pour revêtir un four à haute température, qui est assemblé à partir d'au moins deux parties individuelles, au moins deux parties individuelles assemblées comportant chacune au moins un élément de liaison, et les éléments de liaison des deux parties individuelles assemblées s'emboîtant l'un dans l'autre par complémentarité de forme, formant ainsi une contre-dépouille.
EP13725339.9A 2012-05-23 2013-05-23 Corps d'isolation thermique et procédé de fabrication dudit corps Withdrawn EP2852801A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012208596A DE102012208596A1 (de) 2012-05-23 2012-05-23 Wärmeisolationskörper und Verfahren zu dessen Herstellung
PCT/EP2013/060567 WO2013174898A1 (fr) 2012-05-23 2013-05-23 Corps d'isolation thermique et procédé de fabrication dudit corps

Publications (1)

Publication Number Publication Date
EP2852801A1 true EP2852801A1 (fr) 2015-04-01

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EP13725339.9A Withdrawn EP2852801A1 (fr) 2012-05-23 2013-05-23 Corps d'isolation thermique et procédé de fabrication dudit corps

Country Status (8)

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US (1) US20150079312A1 (fr)
EP (1) EP2852801A1 (fr)
JP (1) JP5889481B2 (fr)
KR (1) KR20150013848A (fr)
CN (1) CN104334992B (fr)
DE (1) DE102012208596A1 (fr)
SG (1) SG11201407712RA (fr)
WO (1) WO2013174898A1 (fr)

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CN107763369B (zh) * 2016-08-15 2019-12-27 南京汇涛节能科技有限公司 一种可拆卸保温套
KR101867722B1 (ko) * 2016-12-19 2018-06-14 주식회사 포스코 소결 대차용 인슐레이션 피스
USD905545S1 (en) * 2017-01-25 2020-12-22 Whitefield Plastics Corporation Non-metallic clip connection device
DE102020202793A1 (de) 2020-03-04 2021-09-09 Sgl Carbon Se Elektrisch entkoppelte Hochtemperaturthermoisolation
CN114060621B (zh) * 2021-11-26 2023-06-30 苏州正乙丙纳米环保科技有限公司 一种层压复合型环保材料管道芯材拼件模块及制造方法

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CA1132450A (fr) * 1978-10-12 1982-09-28 Frank Campbell, Jr. Elements refractaires a imbriquer pour le revetement de canalisations
US4228826A (en) * 1978-10-12 1980-10-21 Campbell Frank Jun Interlocking, laminated refractory for covering a pipe
DE8221596U1 (de) * 1982-07-29 1983-01-20 Morganite Ceramic Fibres Ltd., Bromborough, Wirral, Merseyside Hitzefeste isolierbahn
CH661290A5 (en) * 1984-09-14 1987-07-15 Alusuisse Carbon lining of a molten-salt electrolysis cell or of a foundry furnace
DE4423747A1 (de) * 1994-07-06 1996-01-11 Isobouw Daemmtechnik Gmbh Wärmedämmplatte
US20020014051A1 (en) * 2000-04-20 2002-02-07 Fraval Hanafi R. High strength light-weight fiber ash composite material, method of manufacture thereof, and prefabricated structural building members using the same
ES2324423T3 (es) 2006-05-04 2009-08-06 Sgl Carbon Se Material compuesto resistente a altas temperaturas.
WO2008111885A1 (fr) * 2007-03-15 2008-09-18 Metso Power Ab Ecran de tube et procédé pour fixer un tel écran à un tube de chaudière
WO2011106580A2 (fr) 2010-02-26 2011-09-01 Morgan Advanced Materials And Technology Inc. Système de confinement à base de carbone
US20110318094A1 (en) * 2010-06-29 2011-12-29 Vincent Hensley Strut for connecting frames
TWM457160U (zh) * 2011-11-02 2013-07-11 Morgan Advanced Materials And Technology Inc 熔爐、一罩與隔熱箱之總成及隔熱箱

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Also Published As

Publication number Publication date
CN104334992B (zh) 2016-10-19
KR20150013848A (ko) 2015-02-05
WO2013174898A1 (fr) 2013-11-28
US20150079312A1 (en) 2015-03-19
SG11201407712RA (en) 2015-01-29
JP2015523532A (ja) 2015-08-13
JP5889481B2 (ja) 2016-03-22
DE102012208596A1 (de) 2013-11-28
CN104334992A (zh) 2015-02-04

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