EP2261561B1 - Refractory tile for a pipe wall cladding and pipe wall cladding produced from said tiles - Google Patents

Refractory tile for a pipe wall cladding and pipe wall cladding produced from said tiles Download PDF

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Publication number
EP2261561B1
EP2261561B1 EP10005435.2A EP10005435A EP2261561B1 EP 2261561 B1 EP2261561 B1 EP 2261561B1 EP 10005435 A EP10005435 A EP 10005435A EP 2261561 B1 EP2261561 B1 EP 2261561B1
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EP
European Patent Office
Prior art keywords
plate
groove
longitudinal extension
extension region
longitudinal
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.)
Not-in-force
Application number
EP10005435.2A
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German (de)
French (fr)
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EP2261561A2 (en
EP2261561A3 (en
Inventor
Joachim Cyris
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Zueblin Chimney And Refactory GmbH
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ZUEBLIN CHIMNEY AND REFRACTORY GmbH
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Publication of EP2261561A2 publication Critical patent/EP2261561A2/en
Publication of EP2261561A3 publication Critical patent/EP2261561A3/en
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Publication of EP2261561B1 publication Critical patent/EP2261561B1/en
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Classifications

    • 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
    • F23M5/00—Casings; Linings; Walls
    • F23M5/02—Casings; Linings; Walls characterised by the shape of the bricks or blocks used
    • 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
    • F23M5/04—Supports for linings

Definitions

  • the invention relates to a refractory plate for the protective cover of at least two interconnected via a web pipes, in particular extending along a wall of a combustion chamber cooling tubes, according to the preamble of claim 1, and a pipe wall lining with a plurality of such plates according to claim 11.
  • the invention is a retaining segment for insertion into such a plate according to claim 13.
  • the combustion chamber and the part of the trigger located above the combustion chamber are equipped with pipe walls carrying cooling water.
  • the pipe walls consist of parallel tubes, which are connected to each other via web plates.
  • the cooling water serves as a heat transfer medium for receiving and dissipating the heat of combustion from the combustion exhaust gases.
  • the heat of combustion causes the water in the tubes to evaporate, and this steam is finally fed to turbines for power generation.
  • protective plates which are made of a refractory material, which have proven in practice ceramic SiC plates.
  • plate-shaped plate holders are first welded to the tube wall, in particular to the webs of the tube wall, so that subsequently the tube wall plates can simply be suspended by the assemblers in the thus prepared tube wall. After sealing the spaces between the plates, for example, with fiber felt strips, finally, the free spaces between the pipe wall and the plates are filled with mortar or concrete or shed.
  • these have at least one groove on their rear sides facing the tube wall, which serve for the positive reception of the plate holders.
  • a plate for a pipe wall lining is for example in the DE 203 09 034 U1 described, in which extending over the entire height of the plate cylinder-segment-shaped recesses, which receive the tubes in the assembled state, and in which run between these wells in turn grooves, which are opposite to the pipe webs in the assembled state.
  • the grooves are in each case in Divided areas with different width and cross-sectional area. This is followed by a middle longitudinal portion of the groove, which is undercut in cross section T-shaped, extending to the lower edge of the plate extending lower longitudinal portion of the groove, which has no undercut.
  • the plate is hung from above on the webs of the pipe wall fixed, helical brackets, which have at its end remote from the pipe wall an enlarged holding head, the diameter of which is smaller than the width of the lower groove area, but larger than the width the foot portion of the middle, T-shaped groove area.
  • the widened lower groove area thus advantageously serves as an insertion funnel for a simplified threading of the pipe wall holder into the undercut groove area of the plate.
  • the plate and / or the holder can be damaged in the anchoring point by Wegpendeln.
  • a reliable grouting, filling and / or potting of the plates requires that they are aligned with each other and the pipe wall accurately, which can not be ensured in a movably suspended plate.
  • a similar refractory lining and panels are also in the DE 43 24 423 C1 described.
  • the molded blocks provided therein have on their peripheral surface recesses for receiving tubes. There is a heat transfer between the recesses and the tubes as well as the wall-side surfaces and the wall parts.
  • the two opposite edges of the stones are designed as bevels, wherein between the slopes of the edges of adjacent blocks a wedge-shaped strip is arranged.
  • the strip is made of a refractory ceramic material.
  • the strip forms with the bevels corresponding inclined surfaces which lie flush against the slopes.
  • the strip aligns with the sides of the shaped blocks on the firebox side.
  • Object of the present invention is therefore to provide a refractory plate of the type mentioned, which can be easily and effectively attached to an oblique or horizontal over-head pipe wall, regardless of whether the plate on a vertical, oblique or horizontal to be mounted above the head pipe wall.
  • the essential advantage of the plate according to the invention for the protective covering of a pipe wall is that a uniform plate construction can be used for all pipe wall inclinations, ie equally suitable for vertical, horizontal or with an intermediate inclination walls.
  • the resulting possibility of producing or ordering plate formats in larger lot sizes leads to a reduction in the production or procurement costs for such expensive plates in the material.
  • inventive plate by only one easily manufacturable, additional retaining segment in the lower, expanded profile cross-sectional longitudinal extension of the groove of a protective plate, said retaining segment in turn has an undercut recess, in addition to the upper, undercut longitudinal extension of the Disk groove supported upper plate holder for receiving the holding head of another lower plate holder is used.
  • a plate can be used in a known manner, however, without inserted retaining segment.
  • the holding segment has for receiving the further plate holder on an undercut recess, which extends from the groove bottom facing away from the top of the retaining segment.
  • This recess is adapted to the outer contour of the mounted there in the assembled state retaining head of the plate holder and thereby preferably additionally open at the bottom in the longitudinal direction, so that for plate mounting the plate is still hung in a known manner in the longitudinal direction, so that the holding head through the open longitudinal side from below is inserted in this recess.
  • the retaining segment as well as the widthwise extended, lower longitudinal extension region of the groove, in which the retaining segment is inserted, can advantageously decrease in width in the upward direction, ie in the direction of the undercut region of the groove, in the shape of a wedge. If this wedge-shaped, lower groove area additionally extends to the lower edge of the plate, the holding segment for insertion into the plate can now be inserted into the plate groove in a simple manner from the lower edge of the plate until the holding segment is flush with the plate edge.
  • serving for receiving the retaining segment groove area in the profile cross-section may be arbitrarily designed, a trapezoidal undercut groove cross section and accordingly in its height wedge-shaped tapered retaining segment offers the advantage of a positive anchoring of the retaining segment perpendicular to the plate surface. But the retaining segment can also be glued or beyond in the Plattennut.
  • the retaining segment fills advantageously not the complete, extended in the width, the lower longitudinal extension region of the groove, but it remains an open longitudinal section of this width-extended Nutlfits Kunststoffes obtained, which adjoins the undercut Nutlhacks Complex.
  • the plate For assembly, the plate is moved so that first the head of the upper plate holder is inserted into this open longitudinal section of the enlarged groove, before then, without a complex horizontal readjustment, the plate is displaced in its longitudinal direction, so that the upper holding head in the undercut Area of the groove enters until finally the holding head of the lower plate holder, as already described, enters the recess of the retaining segment.
  • this lower longitudinal extension portion of the plate groove is composed of two in the Width stepwise stepped longitudinal sections together.
  • the retaining segment In one longitudinal section facing away from the undercut longitudinal groove region, the retaining segment is inserted, while an open longitudinal section of the extended groove longitudinal region thus remains between the inserted retaining segment and undercut groove longitudinal region into which the retaining head of the upper plate mounting can be inserted for panel mounting.
  • the undercut longitudinal extension region of the plate groove for supporting the upper plate holder and the undercut recess of the holding segment for supporting the additional, lower plate holder on an identical cross-sectional profile transverse to the longitudinal extent of the plate, so that uniform plate support members, in particular with identically shaped holding heads can be used.
  • Fig. 1 shows the front side 4, that is, the combustion chamber facing side, a particularly preferred embodiment of the refractory plate 1 according to the invention, while the Figures 2 and 3 represent a longitudinal section or a cross section through this plate 1.
  • a flat intermediate surface 20 which is opposite to the pipe web 2 in the assembled state in the distance.
  • this flat intermediate surface 20 is left unchanged only in the adjoining the upper edge of the plate 14 end portion of the plate 1.
  • a groove 7 extends over approximately two-thirds of the plate length in the longitudinal direction L through this flat intermediate surface 20, so that the groove 7 is positioned parallel to and between the two part-cylindrical depressions 6.
  • the groove 7 is not uniform over its length, but is divided into a first upper longitudinal extension portion 7a, which ends blindly before reaching the upper plate edge 14, so that the upper third of the plate 1 remains unchanged, and in a second longitudinal extension region 7b, which passes through to the lower plate edge 13, wherein these two longitudinal extension regions 7a, 7b of the groove 7 are approximately equal in length and thus at a distance of about one third of the plate length to the lower plate edge 13 adjoin one another.
  • the upper longitudinal extension region 7a of the plate groove 7 has a plate back side 5 towards a slot width D1 tapered, that is, an undercut cross-sectional profile.
  • Cross-sectional profile in this context means the profile which has the plate groove 7 in a sectional view transversely to the longitudinal extent L of the plate 1.
  • Fig. 3 is such a cross-sectional profile of the plate 1 shown, however, in a section that extends along the line III - III Fig. 1 and thus does not extend through the first longitudinal extension region 7a of the plate groove 7, but the plate groove 7 in this first longitudinal extension region 7a, as will be explained later, advantageously the same undercut cross-sectional profile as the recess 11 of the holding segment 8 according to FIG Fig. 3 has, that consists of an extended, spherically shaped foot portion 21 which merges into a narrowed, to the back 5 open slot portion 22 (see Fig. 2 ).
  • the plate 1 In order to support the plate 1 in a holding direction H perpendicular to the front or back 4, 5 of the plate 1 at a fixed distance from the covered tubes 3, the plate 1 is connected to the tube wall via plate holders 15, 16.
  • the plate holders 15, 16, as in particular in the sectional views Fig. 2 and 3 can be seen, in each case from a bolt 17, 23, which is fixed to the web 2 of the pipe wall 2, 3, in particular welded and from a relative to the bolt 17, 23 in diameter enlarged holding head 18, 24, to the plate-side end of the bolt 17, 23 connected, preferably screwed.
  • the holding head 18 of the upper plate holder 15 acts as a sliding block, which is anchored positively in the undercut groove 7a of the plate 1 and thus blocks a lifting of the plate 1 of the tube wall 2, 3 in the direction H, while necessary for mounting the plate 1 displacement the plate 1 in the longitudinal direction L is ensured by a longitudinal sliding of the holding head 18 within the extended foot region 21 of the first longitudinal extension region 7a of the plate groove 7.
  • the slot width D1 to which the plate groove 7 tapers in this longitudinal extension region 7a is chosen such that it is in any case smaller than the diameter of the holding head 18 of the plate holder 15, but larger than the diameter of the pin 2 attached to the pin 17 is. In this way, it is guaranteed that the holding head 18 can not detach itself in the holding direction H from the upper longitudinal extension region 7a of the plate groove 7, the groove 7a at the same time but serves as a linear guide when mounting the plate 1.
  • This groove longitudinal region 7c is of particular importance for plate mounting on the pipe wall, because the holding head 18 can only be inserted into the undercut groove longitudinal region 7a at the front side, for which reason the plate 1 must first be aligned with the plate holder 15 such that the holding head 18 of the holder 15 is inserted into the recess formed by the rectangular Nutlhacks Society 7 c on the back of the plate 5, before the plate 1 then according to Fig. 1 is moved from top to bottom, whereby the holding head 18 enters the undercut groove longitudinal region 7a.
  • the groove width D2 of the rectangular groove longitudinal region 7c must therefore be dimensioned larger than the diameter of the holding head 18 and therefore larger than the slot width D1 of the undercut groove longitudinal region 7a.
  • the second, extended in the width longitudinal extent region 7b of the plate groove 7 but not only consists of this rectangular groove longitudinal portion 7c of the width D2, but also from a further groove longitudinal region 7d, which adjoins below the rectangular groove longitudinal region 7d and extends to the lower plate edge 13, so that this groove longitudinal region 7d is open to the lower end side.
  • the lengths of these two longitudinal sections 7c, 7d of the extended groove longitudinal area 7b are approximately equal.
  • the plate groove 7 to the lower plate edge 13 towards final longitudinal portion 7d in its width is greater than the groove width D2 of the rectangular longitudinal portion 7c of the extended groove longitudinal region 7b.
  • the width of the lower groove longitudinal section 7d decreases in a wedge shape from the lower plate edge 13 in the direction of the above, rectangular groove longitudinal section 7c, so that the minimum groove width of this lower groove longitudinal section 7d reaches at the transition point to the rectangular groove longitudinal section 7c is, but this minimum groove width is still greater than the groove width D2.
  • a step-shaped constriction of the groove width is noted in this transition region from the wedge-shaped longitudinal section 7d to the rectangular longitudinal section 7c of the enlarged plate groove 7b.
  • the width of the longitudinal section 7d in the transition with the longitudinal section 7c corresponds to the groove width D2.
  • Characteristic of the present invention is that in this lower wedge-shaped longitudinal portion 7d of the plate groove 7, a holding segment 8 is inserted, which is also wedge-shaped in its width and accurately to the lower longitudinal portion 7d of the plate 7 executed.
  • This holding segment 8 fulfills a function that after looking at the longitudinal section Fig. 2 becomes transparent immediately.
  • the mounting of the plate 1 is shown on a horizontally extending overhead pipe wall.
  • the already explained anchoring of the plate 1 by supporting a holding head 18 in the undercut NutlNicols Scheme 7a would not be sufficient alone by the force acting on the plate 1 in the overhead mounting illustrated gravity alone to the plate 1 along its entire longitudinal extent L safe and uniformly close distance to keep the pipe wall 2, 3.
  • a holding segment 8 is inserted, which has an undercut recess 11 starting from its upper side 10 facing away from the groove bottom 9 of the plate groove 7 and thus facing the tube wall 2, 3.
  • This recess 11 of the holding segment 8 in accordance with the undercut plate groove 7a, has a cross-sectional profile tapering towards the tube wall from a crowned, diameter-sized foot region 25 to a cylindrical passage region 26.
  • the cylindrical passage region 26 of the recess 11 is smaller in diameter than the diameter of the holding head 24, but chosen larger than the diameter of the pin 23 of the plate holder 16, so that the holding head 24 within the recess 11 in the holding direction H is positively anchored.
  • the recess 11 is longitudinally open to the lower end of the holding segment 8 out. Since the retaining segment 8 in turn is flush with the lower edge of the plate 13, the recess 11 of the retaining segment 8 is thus freely open in the longitudinal direction L downwards, so that the holding head 24 of the plate holder 16 by the longitudinal movement of the plate 1 from top to bottom Fig. 1 or from right to left according to Fig. 2 over the open longitudinal side 12 of the recess 11 in this to reach the in Fig. 1 to 3 shown anchoring position is inserted.
  • the holding segment 8 is in the FIGS. 4 and 5 shown separately in front and top view, with Fig. 5 It can be seen that the retaining segment 8 is designed wedge-shaped not only in the longitudinal direction L, but also in the holding direction H.
  • the wedge-shaped tapered flank surfaces 27 of the retaining segment 8 lie in the assembled state according to Fig. 3 to the in the holding direction H trapezoidal tapered, so undercut groove side surfaces 28 of the plate 1, so that the holding segment 8 is anchored in the holding direction H positively in the lower longitudinal portion 7d of the plate 7.
  • the retaining segment 8 can not be used perpendicular to the plate back 5 in this embodiment, but rather must be inserted into the plate groove 7 in the longitudinal direction L through the lower, open end on the plate edge 13 and then be advanced to the stop on the stepped groove narrowing.
  • the wedge-shaped flank surfaces 27 of the retaining segment 8 are adjoined by cylindrically-concavely curved edge surfaces 29, which extend as far as the planar upper side 10 of the retaining segment 8.
  • the holding segment 8 shows that these cylindrical concave bulges 29 of the holding segment 8 in the assembled state, the partial cylindrical recesses 6 on the back of the plate 5 continue to educate and the top 10 of the holding segment 8 at the same distance from the tube web 2 as the flat intermediate surface 20 of the plate back 5.
  • the holding segment. 8 With its protruding from the plate groove 7 contour is a dimensionally accurate adaptation to the geometry of the plate back 5, so that even in the insertion of the holding segment 8, the distances to the tube wall are the same as in the rest of the plate area and identical means 15, 16 used for plate holder can be.
  • the holding segment 8 also has a through hole 30 running in the longitudinal direction L, which opens into the recess 11.
  • This longitudinal bore 30 serves to ensure that in the final backfilling or back-pouring of the gap 19 between plate 1 and tube wall of grout or concrete can also flow into the recess 11 of the retaining segment 8, whereby the holding head 24 inserted there is securely fixed to the plate 1 cohesively ,
  • the upper plate holder 15 is pushed to achieve the illustrated mounting position so far into the undercut longitudinal extension portion 7a of the plate 7 until it abuts with its holding head 18 at the top, within the plate cross-section end of the plate groove 7, whereby the holding head 18 of the upper Plate holder 15 not only in the holding direction H, but also in the longitudinal direction L ensures a support of the plate 1.
  • both plate supports 15, 16 advantageously carry the weight force components of the plate 1 acting in the holding direction H and in the longitudinal direction L.
  • the refractory plate 1 can also be used without inserted retaining segment 8.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supports For Pipes And Cables (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Description

Die Erfindung betrifft eine feuerfeste Platte zur Schutzabdeckung von mindestens zwei über einen Steg miteinander verbundenen Rohren, insbesondere von entlang einer Wand eines Verbrennungsraums verlaufenden Kühlrohren, gemäß dem Oberbegriff des Anspruchs 1, sowie eine Rohrwandverkleidung mit einer Vielzahl solcher Platten gemäß Patentanspruch 11. Darüber hinaus betrifft die Erfindung ein Haltesegment zum Einsetzen in eine solche Platte gemäß Patentanspruch 13.The invention relates to a refractory plate for the protective cover of at least two interconnected via a web pipes, in particular extending along a wall of a combustion chamber cooling tubes, according to the preamble of claim 1, and a pipe wall lining with a plurality of such plates according to claim 11. In addition concerns the invention is a retaining segment for insertion into such a plate according to claim 13.

In modernen Müll-, Bio- und Feststoffverbrennungsanlagen sind der Brennraum und der über dem Brennraum angeordnete Teil des Abzugs mit Kühlwasser führenden Rohrwänden ausgestattet. Die Rohrwände bestehen aus parallelen Rohren, die über Stegbleche miteinander verbunden sind. Das Kühlwasser dient hierbei als Wärmeträgermedium zur Aufnahme und Abführung der Verbrennungswärme aus den Verbrennungsabgasen. Die Verbrennungswärme bringt das Wasser in den Rohren zum Verdampfen, wobei dieser Wasserdampf schließlich Turbinen zur Stromerzeugung zugeführt wird. Um die Rohre vor den hohen Temperaturen von über 1000° C und der zumeist hoch korrosiven Atmosphäre des Abgasstromes zu schützen, werden sie mit Schutzplatten abgedeckt, die aus einem feuerfesten Material gefertigt sind, wozu sich in der Praxis keramische SiC-Platten bewährt haben.In modern garbage, bioliquids and solids incineration plants, the combustion chamber and the part of the trigger located above the combustion chamber are equipped with pipe walls carrying cooling water. The pipe walls consist of parallel tubes, which are connected to each other via web plates. The cooling water serves as a heat transfer medium for receiving and dissipating the heat of combustion from the combustion exhaust gases. The heat of combustion causes the water in the tubes to evaporate, and this steam is finally fed to turbines for power generation. In order to protect the pipes from the high temperatures of over 1000 ° C and the usually highly corrosive atmosphere of the exhaust stream, they are covered with protective plates, which are made of a refractory material, which have proven in practice ceramic SiC plates.

Bei den meisten bekannten Rohrwand-Plattensystemen werden im Zuge der Plattenmontage zunächst meist stiftförmige Plattenhalterungen an der Rohrwand, insbesondere an den Stegen der Rohrwand angeschweißt, so dass anschließend die Rohrwandplatten einfach in die so vorbereitete Rohrwand durch die Monteure eingehängt werden können. Nach dem Abdichten der Zwischenräume zwischen den Platten, beispielsweise mit Faserfilzstreifen, werden schließlich die freien Räume zwischen der Rohrwand und den Platten mit Mörtel oder Beton verfüllt bzw. vergossen.In the case of most known tube wall plate systems, usually plate-shaped plate holders are first welded to the tube wall, in particular to the webs of the tube wall, so that subsequently the tube wall plates can simply be suspended by the assemblers in the thus prepared tube wall. After sealing the spaces between the plates, for example, with fiber felt strips, finally, the free spaces between the pipe wall and the plates are filled with mortar or concrete or shed.

Zum Einhängen der Platten weisen diese an ihren der Rohrwand zugewandten Rückseiten jeweils mindestens eine Nut auf, die zur formschlüssigen Aufnahme der Plattenhalterungen dienen. Eine derartige Platte für eine Rohrwandverkleidung ist beispielsweise in der DE 203 09 034 U1 beschrieben, bei der sich über die gesamte Höhe der Platte zylindersegmentförmige Vertiefungen erstrecken, die im montierten Zustand die Rohre aufnehmen, und bei der zwischen diesen Vertiefungen wiederum Nuten verlaufen, die im montierten Zustand den Rohrstegen gegenüberliegen. Die Nuten sind ihrerseits jeweils in Bereiche mit unterschiedlicher Breite und Querschnittsfläche unterteilt. Dabei schließt sich an einen mittleren Längsabschnitt der Nut, der im Querschnitt T-förmig hinterschnitten ist, ein sich bis zum unteren Plattenrand erstreckender unterer Längsabschnitt der Nut an, der keinen Hinterschnitt aufweist. Auf diese Weise wird die Platte von oben her auf an den Stegen der Rohrwand befestigte, schraubenförmige Halterungen gehängt, die an ihrem von der Rohrwand abweisenden Ende einen vergrößerten Haltekopf besitzen, dessen Durchmesser zwar kleiner als die Breite des unteren Nutbereiches, aber größer als die Breite des Fußteils des mittleren, T-förmigen Nutbereiches ist. Dies hat zur Folge, dass die Platte im Zuge der Montage so weit nach unten bewegt werden kann, bis das Abschlusselement der Halterung am oberen Ende des mittleren, T-förmigen Nutbereiches anschlägt. Der verbreiterte untere Nutbereich dient also vorteilhafterweise als Einführtrichter für ein vereinfachtes Einfädeln der Rohrwandhalterung in den hinterschnittenen Nutbereich der Platte.To mount the plates, these have at least one groove on their rear sides facing the tube wall, which serve for the positive reception of the plate holders. Such a plate for a pipe wall lining is for example in the DE 203 09 034 U1 described, in which extending over the entire height of the plate cylinder-segment-shaped recesses, which receive the tubes in the assembled state, and in which run between these wells in turn grooves, which are opposite to the pipe webs in the assembled state. The grooves are in each case in Divided areas with different width and cross-sectional area. This is followed by a middle longitudinal portion of the groove, which is undercut in cross section T-shaped, extending to the lower edge of the plate extending lower longitudinal portion of the groove, which has no undercut. In this way, the plate is hung from above on the webs of the pipe wall fixed, helical brackets, which have at its end remote from the pipe wall an enlarged holding head, the diameter of which is smaller than the width of the lower groove area, but larger than the width the foot portion of the middle, T-shaped groove area. This has the consequence that the plate during assembly can be moved so far down until the end element of the holder abuts the upper end of the central, T-shaped groove area. The widened lower groove area thus advantageously serves as an insertion funnel for a simplified threading of the pipe wall holder into the undercut groove area of the plate.

Von Nachteil ist aber bei einer solchen Platte, dass ihre Montage an schrägen oder an horizontal über Kopf verlaufenden Wandflächen, die in Verbrennungsanlagen besonders im Übergangsbereich vom Brennraum zum Rauchgasabzug vorhanden sind, nur erschwert möglich ist. Da nur der mittlere Nutbereich durch sein hinterschnittenes Querschnittsprofil eine Verankerung der Platte an den Halterungen der Rohrwand senkrecht zur Plattenoberfläche erlaubt und für die Platte im unteren, in der Breite erweiterten Nutbereich aber keine zusätzliche Verbindung zur Rohrwand gegeben ist, kann die Platte bei einer Schräg- oder Überkopf-Montage mit ihrem unteren Endbereich von der Wand um den Verankerungspunkt im mittleren Nutbereich wegpendeln. Ein derartiges Wegpendeln der Platte ist unerwünscht, da damit keine geschlossen Wand- oder Deckenfläche zum Verbrennungsraum realisierbar ist. Zudem kann durch das Wegpendeln die Platte und/oder die Halterung im Verankerungspunkt beschädigt werden. Schließlich erfordert ein zuverlässiges Verfugen, Verfüllen und/oder Vergießen der Platten, dass diese zueinander und zur Rohrwand passgenau ausgerichtet sind, was bei einer beweglich aufgehängten Platte nicht sichergestellt werden kann.The disadvantage of such a plate, however, that their installation on sloping or horizontally over head wall surfaces that are present in incinerators especially in the transition region from the combustion chamber to the flue gas outlet, is difficult possible. Since only the central groove area by its undercut cross-sectional profile allows anchoring of the plate to the holders of the tube wall perpendicular to the plate surface and for the plate in the lower, widened in the groove area but no additional connection to the tube wall is given, the plate at a slant or overhead mounting with its lower end portion away from the wall around the anchorage point in the middle groove area. Such a swinging away of the plate is undesirable because it is not a closed wall or ceiling surface to the combustion chamber can be realized. In addition, the plate and / or the holder can be damaged in the anchoring point by Wegpendeln. Finally, a reliable grouting, filling and / or potting of the plates requires that they are aligned with each other and the pipe wall accurately, which can not be ensured in a movably suspended plate.

Eine ähnliche feuerfeste Auskleidung und Platten sind auch in der DE 43 24 423 C1 beschrieben. Die darin vorgesehenen Formsteine weisen an ihrer randseitigen Fläche Ausnehmungen für die Aufnahme von Röhren auf. Zwischen den Ausnehmungen und den Röhren sowie der wandseitigen Flächen und den Wandteilen besteht ein Wärmeübergang. Die beiden gegenüberliegenden Ränder der Formsteine sind als Schrägen gestaltet, wobei zwischen den Schrägen der Ränder benachbarter Formsteine eine keilförmige Leiste angeordnet ist. Die Leiste besteht aus einem feuerfesten keramischen Material. Die Leiste bildet mit den Schrägen korrespondierende Schrägflächen, die an den Schrägen bündig anliegen. Feuerraumseitig fluchtet die Leiste mit den feuerraumseitigen Flächen der Formsteine.A similar refractory lining and panels are also in the DE 43 24 423 C1 described. The molded blocks provided therein have on their peripheral surface recesses for receiving tubes. There is a heat transfer between the recesses and the tubes as well as the wall-side surfaces and the wall parts. The two opposite edges of the stones are designed as bevels, wherein between the slopes of the edges of adjacent blocks a wedge-shaped strip is arranged. The strip is made of a refractory ceramic material. The strip forms with the bevels corresponding inclined surfaces which lie flush against the slopes. On the firebox side, the strip aligns with the sides of the shaped blocks on the firebox side.

Aufgabe der vorliegenden Erfindung ist es daher, eine feuerfeste Platte der eingangs genannten Art zu schaffen, welche einfach und effektiv an einer schrägen oder horizontal über Kopf verlaufenden Rohrwand befestigt werden kann, und zwar unabhängig davon, ob die Platte an einer vertikalen, schrägen oder horizontal über Kopf verlaufenden Rohrwand montiert werden soll.Object of the present invention is therefore to provide a refractory plate of the type mentioned, which can be easily and effectively attached to an oblique or horizontal over-head pipe wall, regardless of whether the plate on a vertical, oblique or horizontal to be mounted above the head pipe wall.

Gelöst wird diese Aufgabe durch eine feuerfeste Platte mit den Merkmalen des Anspruchs 1 sowie durch eine Rohrwandverkleidung mit den Merkmalen des Anspruchs 11.This object is achieved by a refractory plate with the features of claim 1 and by a pipe wall lining with the features of claim 11.

Der wesentliche Vorteil der erfindungsgemäßen Platte zur Schutzabdeckung einer Rohrwand besteht darin, dass eine einheitliche Plattenkonstruktion für alle Rohrwandneigungen verwendet werden kann, also gleichermaßen für vertikale, horizontale oder mit einer dazwischenliegenden Neigung besitzenden Wände geeignet ist. Die sich daraus eröffnende Möglichkeit Plattenformate in größeren Losgrößen zu produzieren oder zu bestellen, führt zu einer Verringerung der Herstellungs- bzw. Beschaffungskosten für solche im Material teuren Platten.The essential advantage of the plate according to the invention for the protective covering of a pipe wall is that a uniform plate construction can be used for all pipe wall inclinations, ie equally suitable for vertical, horizontal or with an intermediate inclination walls. The resulting possibility of producing or ordering plate formats in larger lot sizes leads to a reduction in the production or procurement costs for such expensive plates in the material.

Diesen Überlegungen trägt die erfindungsgemäße Platte Rechnung, indem lediglich ein einfach herstellbares, zusätzliches Haltesegment in den unteren, im Profilquerschnitt erweiterten Längserstreckungsbereich der Nut einer Schutzplatte eingesetzt wird, wobei dieses Haltesegment wiederum eine hinterschnittene Aussparung aufweist, die zusätzlich zu der im oberen, hinterschnittenen Längserstreckungsbereich der Plattennut abgestützten oberen Plattenhalterung zur Aufnahme des Haltekopfes einer weiteren unteren Plattenhalterung dient. Zur konventionellen Montage an einer vertikalen Rohrwand kann eine solche Platte in bekannter Weise jedoch auch ohne eingesetztes Haltesegment verwendet werden.These considerations are taken into account the inventive plate by only one easily manufacturable, additional retaining segment in the lower, expanded profile cross-sectional longitudinal extension of the groove of a protective plate, said retaining segment in turn has an undercut recess, in addition to the upper, undercut longitudinal extension of the Disk groove supported upper plate holder for receiving the holding head of another lower plate holder is used. For conventional mounting on a vertical pipe wall, such a plate can be used in a known manner, however, without inserted retaining segment.

Das Haltesegment weist zur Aufnahme der weiteren Plattenhalterung eine hinterschnittene Aussparung auf, die von der dem Nutengrund abgewandten Oberseite des Haltesegmentes ausgeht. Diese Aussparung ist an die Außenkontur des dort im montierten Zustand gelagerten Haltekopfes der Plattenhalterung angepasst und dabei bevorzugterweise zusätzlich unterseitig in Längsrichtung offen, so dass zur Plattenmontage die Platte weiterhin auf bekannte Weise in Längsrichtung eingehängt wird, so dass der Haltekopf durch die offene Längsseite von unten in diese Aussparung eingelegt wird.The holding segment has for receiving the further plate holder on an undercut recess, which extends from the groove bottom facing away from the top of the retaining segment. This recess is adapted to the outer contour of the mounted there in the assembled state retaining head of the plate holder and thereby preferably additionally open at the bottom in the longitudinal direction, so that for plate mounting the plate is still hung in a known manner in the longitudinal direction, so that the holding head through the open longitudinal side from below is inserted in this recess.

Das Haltesegment sowie der in der Breite erweiterte, untere Längserstreckungsbereich der Nut, in welchem das Haltesegment eingesetzt ist, können vorteilhafterweise in ihrer Breite nach oben, also in Richtung zum hinterschnittenen Bereich der Nut, keilförmig abnehmen. Wenn sich dieser keilförmige, untere Nutbereich zusätzlich noch bis zum unteren Plattenrand erstreckt, kann das Haltesegment zum Einsetzen in die Platte nun auf einfache Weise stirnseitig vom unteren Plattenrand her in die Plattennut eingeschoben werden, bis das Haltesegment bündig mit dem Plattenrand abschließt. Dabei kann der zur Aufnahme des Haltesegmentes dienende Nutbereich im Profilquerschnitt beliebig gestaltet sein, ein trapezförmig hinterschnittener Nutenquerschnitt und ein dementsprechend in seiner Höhe keilförmig zulaufendes Haltesegment bietet dabei den Vorteil einer formschlüssigen Verankerung des Haltesegmentes senkrecht zur Plattenfläche. Das Haltesegment kann aber auch oder darüber hinaus noch in der Plattennut eingeklebt sein.The retaining segment as well as the widthwise extended, lower longitudinal extension region of the groove, in which the retaining segment is inserted, can advantageously decrease in width in the upward direction, ie in the direction of the undercut region of the groove, in the shape of a wedge. If this wedge-shaped, lower groove area additionally extends to the lower edge of the plate, the holding segment for insertion into the plate can now be inserted into the plate groove in a simple manner from the lower edge of the plate until the holding segment is flush with the plate edge. In this case, serving for receiving the retaining segment groove area in the profile cross-section may be arbitrarily designed, a trapezoidal undercut groove cross section and accordingly in its height wedge-shaped tapered retaining segment offers the advantage of a positive anchoring of the retaining segment perpendicular to the plate surface. But the retaining segment can also be glued or beyond in the Plattennut.

Damit die obere Plattenhalterung, die im entsprechend hinterschnittenen, oberen Längserstreckungsbereich der Plattennut zu verankern ist, bei der Montage auch schnell und einfach mit ihrem vergrößerten Haltekopf beim Einhängen der Platte in diesen Plattennutbereich eingeschoben werden kann, füllt das Haltesegment in vorteilhafter Weise nicht den kompletten, in der Breite erweiterten, unteren Längserstreckungsbereich der Nut aus, sondern es bleibt ein offener Längsabschnitt dieses in der Breite erweiterten Nutlängsbereiches erhalten, der an den hinterschnittenen Nutlängsbereich anschließt. Zur Montage wird die Platte so bewegt, dass zunächst der Kopf der oberen Plattenhalterung in diesen offenen Längsabschnitt der erweiterten Nut eingesteckt wird, bevor dann, ohne eine aufwendige horizontale Nachjustierung, die Platte in ihrer Längsrichtung verschoben wird, so dass der obere Haltekopf in den hinterschnittenen Bereich der Nut einfährt, bis schließlich auch der Haltekopf der unteren Plattenhalterung, wie bereits geschildert, in die Aussparung des Haltesegmentes eintritt.In order for the upper plate holder, which is to be anchored in the correspondingly undercut, upper longitudinal extension region of the plate groove, can be inserted quickly and easily with its enlarged holding head when mounting the plate in this Plattennutbereich during assembly, the retaining segment fills advantageously not the complete, extended in the width, the lower longitudinal extension region of the groove, but it remains an open longitudinal section of this width-extended Nutlängsbereiches obtained, which adjoins the undercut Nutlängsbereich. For assembly, the plate is moved so that first the head of the upper plate holder is inserted into this open longitudinal section of the enlarged groove, before then, without a complex horizontal readjustment, the plate is displaced in its longitudinal direction, so that the upper holding head in the undercut Area of the groove enters until finally the holding head of the lower plate holder, as already described, enters the recess of the retaining segment.

Um die vorerläuterte Unterteilung des in der Breite erweiterten, unteren Längserstreckungsbereiches der Plattennut in einen Einsetzbereich für das Haltesegment einerseits und einen Einsteckbereich für den Haltekopf der oberen Plattenhalterung zwecks Plattenmontage andererseits auf einfache Weise zu bewerkstelligen, setzt sich dieser untere Längserstreckungsbereich der Plattennut aus zwei in der Breite stufenförmig voneinander abgesetzten Längsabschnitten zusammen. In dem einen, dem hinterschnittenen Nutlängsbereich abgewandten Längsabschnitt ist dabei das Haltesegment eingesetzt, während zwischen eingesetztem Haltesegment und hinterschnittenem Nutlängsbereich somit ein offener Längsabschnitt des erweiterten Nutlängsbereiches bestehen bleibt, in den der Haltekopf der oberen Plattenhalterung zur Plattenmontage einsteckbar ist.On the other hand, in order to easily accomplish the above-mentioned division of the widthwise extended lower longitudinal extension portion of the plate groove into an insertion portion for the holding segment and an insertion portion for the holding head of the upper plate holder for plate mounting, this lower longitudinal extension portion of the plate groove is composed of two in the Width stepwise stepped longitudinal sections together. In one longitudinal section facing away from the undercut longitudinal groove region, the retaining segment is inserted, while an open longitudinal section of the extended groove longitudinal region thus remains between the inserted retaining segment and undercut groove longitudinal region into which the retaining head of the upper plate mounting can be inserted for panel mounting.

Vorteilhafterweise besitzen der hinterschnittene Längserstreckungsbereich der Plattennut zur Abstützung der oberen Plattenhalterung und die hinterschnittene Aussparung des Haltesegmentes zur Abstützung der zusätzlichen, unteren Plattenhalterung ein identisches Querschnittsprofil quer zur Längserstreckung der Platte auf, so dass einheitliche Plattenhalterungselemente, insbesondere mit gleich geformten Halteköpfen, verwendet werden können.Advantageously, the undercut longitudinal extension region of the plate groove for supporting the upper plate holder and the undercut recess of the holding segment for supporting the additional, lower plate holder on an identical cross-sectional profile transverse to the longitudinal extent of the plate, so that uniform plate support members, in particular with identically shaped holding heads can be used.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung eines Ausführungsbeispiels.Further advantageous embodiments of the invention will become apparent from the dependent claims and the following description of an embodiment.

In der Zeichnung zeigt

Fig. 1
eine Ansicht der dem Verbrennungsraum zugewandten Vorderseite einer feuerfesten Platte,
Fig. 2
eine Schnittdarstellung längs der Linie II - II in Fig. 1,
Fig. 3
eine Schnittdarstellung längs der Linie III - III in Fig. 1,
Fig. 4
eine Einzeldarstellung des in die feuerfeste Platte eingesetzten Haltesegmentes in einer Ansicht entsprechend der Fig. 1, und
Fig. 5
eine Draufsicht auf das Haltesegment aus Fig. 4.
In the drawing shows
Fig. 1
a view of the combustion chamber facing front of a refractory plate,
Fig. 2
a sectional view taken along the line II - II in Fig. 1 .
Fig. 3
a sectional view taken along the line III - III in Fig. 1 .
Fig. 4
a single representation of the retaining segment used in the refractory plate in a view corresponding to Fig. 1 , and
Fig. 5
a plan view of the retaining segment Fig. 4 ,

Fig. 1 zeigt die Vorderseite 4, das heißt die dem Verbrennungsraum zugewandte Seite, einer besonders bevorzugten Ausführungsform der erfindungsgemäßen feuerfesten Platte 1, während die Figuren 2 und 3 einen Längsschnitt bzw. einen Querschnitt durch diese Platte 1 darstellen. Fig. 1 shows the front side 4, that is, the combustion chamber facing side, a particularly preferred embodiment of the refractory plate 1 according to the invention, while the Figures 2 and 3 represent a longitudinal section or a cross section through this plate 1.

Wie in den Schnittdarstellungen der Fig. 2 und 3 erkennbar, werden von der feuerfesten Platte 1 zwei parallel zueinander und in Längserstreckung L der Platte 1 verlaufende Rohre 3 abgedeckt, die miteinander über einen Steg 2 verbunden sind und so eine Rohrwand bilden. Hierzu sind in der der Rohrwand 2, 3 zugewandten Rückseite 5 der Platte 1 zwei teilzylindrische Vertiefungen 6 eingearbeitet, die sich über die gesamte Längserstreckung L der Platte 1 ausdehnen. Der Abstand und der Krümmungsradius dieser teilzylindrischen Vertiefungen 6 sind dabei so an den Abstand und den Durchmesser der beiden Rohre 3 angepasst, dass diese wie aus Figur 3 ersichtlich in die Vertiefungen 6 der Platte 1 unter Einhaltung eines gleichmäßigen Abstandes zur Plattenrückseite 5 hineinragen.As in the sectional views of Fig. 2 and 3 recognizable, two parallel to each other and in the longitudinal extent L of the plate 1 extending tubes 3 are covered by the refractory plate 1, which are connected to each other via a web 2 and thus form a tube wall. For this purpose, in the pipe wall 2, 3 facing back 5 of the plate 1, two part-cylindrical recesses 6 are incorporated, which extend over the entire longitudinal extent L of the plate 1. The distance and the radius of curvature of these part-cylindrical recesses 6 are adapted to the distance and the diameter of the two tubes 3, that this as from FIG. 3 can protrude into the recesses 6 of the plate 1 while maintaining a uniform distance to the back of the plate 5.

Zwischen den beiden Vertiefungen 6 auf der Plattenrückseite 5 erhebt sich entlang der Plattenlängsachse II - II eine ebene Zwischenfläche 20, die im montierten Zustand dem Rohrsteg 2 im Abstand gegenüber liegt. Allerdings ist diese ebene Zwischenfläche 20 nur im an den oberen Plattenrand 14 angrenzenden Endbereich der Platte 1 unverändert gelassen. Vom unteren Plattenrand 13 ausgehend erstreckt sich über rund zwei Drittel der Plattenlänge in Längsrichtung L eine Nut 7 durch diese ebene Zwischenfläche 20, so dass die Nut 7 parallel zu und zwischen den beiden teilzylindrischen Vertiefungen 6 positioniert ist.Between the two recesses 6 on the back of the plate 5 rises along the plate longitudinal axis II - II, a flat intermediate surface 20 which is opposite to the pipe web 2 in the assembled state in the distance. However, this flat intermediate surface 20 is left unchanged only in the adjoining the upper edge of the plate 14 end portion of the plate 1. Starting from the lower plate edge 13, a groove 7 extends over approximately two-thirds of the plate length in the longitudinal direction L through this flat intermediate surface 20, so that the groove 7 is positioned parallel to and between the two part-cylindrical depressions 6.

Die Nut 7 ist allerdings über ihre Länge nicht einheitlich ausgeführt, sondern ist unterteilt in einen ersten oberen Längserstreckungsbereich 7a, der vor dem Erreichen des oberen Plattenrandes 14 blind endet, so dass das obere Drittel der Platte 1 unverändert bestehen bleibt, und in einen zweiten Längserstreckungsbereich 7b, der bis zum unteren Plattenrand 13 durchgeht, wobei diese beiden Längserstreckungsbereiche 7a, 7b der Nut 7 in etwa gleich lang sind und somit in einem Abstand von rund einem Drittel der Plattenlänge zum unteren Plattenrand 13 aneinander anschließen.However, the groove 7 is not uniform over its length, but is divided into a first upper longitudinal extension portion 7a, which ends blindly before reaching the upper plate edge 14, so that the upper third of the plate 1 remains unchanged, and in a second longitudinal extension region 7b, which passes through to the lower plate edge 13, wherein these two longitudinal extension regions 7a, 7b of the groove 7 are approximately equal in length and thus at a distance of about one third of the plate length to the lower plate edge 13 adjoin one another.

Der obere Längserstreckungsbereich 7a der Plattennut 7 weist ein sich zur Plattenrückseite 5 hin auf eine Schlitzbreite D1 verjüngendes, das heißt ein hinterschnittenes Querschnittsprofil auf. Querschnittsprofil bedeutet in diesem Zusammenhang das Profil, welches die Plattennut 7 bei einer Schnittansicht quer zur Längserstreckung L der Platte 1 aufweist. In Fig. 3 ist ein solches Querschnittsprofil der Platte 1 dargestellt, allerdings in einem Schnitt, der sich entlang der Linie III - III aus Fig. 1 und somit nicht durch den ersten Längserstreckungsbereich 7a der Plattennut 7 erstreckt, wobei aber die Plattennut 7 in diesem ersten Längserstreckungsbereich 7a, wie später noch näher erläutert wird, vorteilhafterweise das gleiche hinterschnittene Querschnittsprofil wie die Aussparung 11 des Haltesegmentes 8 gemäß Fig. 3 aufweist, also aus einem erweiterten, ballig geformten Fußbereich 21 besteht, der in einen verengten, zur Rückseite 5 geöffneten Schlitzbereich 22 übergeht (siehe Fig. 2).The upper longitudinal extension region 7a of the plate groove 7 has a plate back side 5 towards a slot width D1 tapered, that is, an undercut cross-sectional profile. Cross-sectional profile in this context means the profile which has the plate groove 7 in a sectional view transversely to the longitudinal extent L of the plate 1. In Fig. 3 is such a cross-sectional profile of the plate 1 shown, however, in a section that extends along the line III - III Fig. 1 and thus does not extend through the first longitudinal extension region 7a of the plate groove 7, but the plate groove 7 in this first longitudinal extension region 7a, as will be explained later, advantageously the same undercut cross-sectional profile as the recess 11 of the holding segment 8 according to FIG Fig. 3 has, that consists of an extended, spherically shaped foot portion 21 which merges into a narrowed, to the back 5 open slot portion 22 (see Fig. 2 ).

Um die Platte 1 in einer Halterichtung H senkrecht zur Vorder- bzw. Rückseite 4, 5 der Platte 1 in einem festen Abstand zu den abgedeckten Rohren 3 abzustützen, ist die Platte 1 über Plattenhalterungen 15, 16 mit der Rohrwand verbunden. Dabei bestehen die Plattenhalterungen 15, 16, wie insbesondere in den Schnittdarstellungen nach Fig. 2 und 3 erkennbar ist, jeweils aus einem Bolzen 17, 23, der am Steg 2 der Rohrwand 2, 3 befestigt, insbesondere angeschweißt ist und aus einem in Relation zum Bolzen 17, 23 im Durchmesser vergrößerten Haltekopf 18, 24, der an das plattenseitige Ende des Bolzens 17, 23 angeschlossen, vorzugsweise angeschraubt ist. Der Haltekopf 18 der oberen Plattenhalterung 15 fungiert als Nutenstein, der in der hinterschnittenen Nut 7a der Platte 1 formschlüssig verankert ist und somit ein Abheben der Platte 1 von der Rohrwand 2, 3 in Halterichtung H blockiert, während eine zum Einhängen der Platte 1 notwendige Verschiebung der Platte 1 in Längsrichtung L durch ein Längsgleiten des Haltekopfes 18 innerhalb des erweiterten Fußbereiches 21 des ersten Längserstreckungsbereiches 7a der Plattennut 7 gewährleistet bleibt.In order to support the plate 1 in a holding direction H perpendicular to the front or back 4, 5 of the plate 1 at a fixed distance from the covered tubes 3, the plate 1 is connected to the tube wall via plate holders 15, 16. In this case, the plate holders 15, 16, as in particular in the sectional views Fig. 2 and 3 can be seen, in each case from a bolt 17, 23, which is fixed to the web 2 of the pipe wall 2, 3, in particular welded and from a relative to the bolt 17, 23 in diameter enlarged holding head 18, 24, to the plate-side end of the bolt 17, 23 connected, preferably screwed. The holding head 18 of the upper plate holder 15 acts as a sliding block, which is anchored positively in the undercut groove 7a of the plate 1 and thus blocks a lifting of the plate 1 of the tube wall 2, 3 in the direction H, while necessary for mounting the plate 1 displacement the plate 1 in the longitudinal direction L is ensured by a longitudinal sliding of the holding head 18 within the extended foot region 21 of the first longitudinal extension region 7a of the plate groove 7.

Damit der Haltekopf 18 innerhalb des Fußbereiches 21 der hinterschnittenen Nut 7a in Richtung H formschlüssig verankert bleibt, ist die Schlitzbreite D1, auf welche sich die Plattennut 7 in diesem Längserstreckungsbereich 7a verjüngt, so gewählt, dass sie auf jeden Fall kleiner als der Durchmesser des Haltekopfes 18 der Plattenhalterung 15, aber größer als der Durchmesser des am Steg 2 befestigten Bolzens 17 ist. Auf diese Weise ist garantiert, dass der Haltekopf 18 sich nicht in Halterichtung H aus dem oberen Längserstreckungsbereich 7a der Plattennut 7 herauslösen kann, die Nut 7a gleichzeitig aber als Linearführung beim Einhängen der Platte 1 dient.So that the holding head 18 remains positively anchored in the direction H in the foot region 21 of the undercut groove 7a, the slot width D1 to which the plate groove 7 tapers in this longitudinal extension region 7a is chosen such that it is in any case smaller than the diameter of the holding head 18 of the plate holder 15, but larger than the diameter of the pin 2 attached to the pin 17 is. In this way, it is guaranteed that the holding head 18 can not detach itself in the holding direction H from the upper longitudinal extension region 7a of the plate groove 7, the groove 7a at the same time but serves as a linear guide when mounting the plate 1.

Wie aus Fig. 1 ersichtlich ist, weitet sich die Plattennut 7 in Richtung zum unteren Plattenrand 13 hin von dem beschriebenen hinterschnittenen Nutlängsbereich 7a zur Aufnahme der Plattenhalterung 15 auf einen verbreiterten Nutlängsbereich 7b aus, der sich bis zum unteren Plattenrand 13 erstreckt. Dabei ist dieser verbreiterte Nutlängsbereich 7b wiederum, was seinen Nutbreitenverlauf betrifft, in zwei stufenförmig voneinander abgesetzte Nutlängsbereiche 7c, 7d unterteilt. Direkt unterhalb des hinterschnittenen Nutlängsbereiches 7a folgt gemäß der Vorderansicht nach Fig. 1 ein Nutlängsbereich 7c mit einer konstanten Breite D2, der in seinem Querschnittsprofil rechteckförmig ausgebildet ist. Diesem Nutlängsbereich 7c kommt für die Plattenmontage an der Rohrwand eine besondere Bedeutung zu, denn der Haltekopf 18 kann nur stirnseitig in den hinterschnittenen Nutlängsbereich 7a eingeführt werden, weshalb die Platte 1 zunächst so zur Plattenhalterung 15 ausgerichtet werden muss, dass der Haltekopf 18 der Halterung 15 in die durch den rechteckförmigen Nutlängsbereich 7c auf der Plattenrückseite 5 gebildete Aussparung eingesteckt wird, bevor die Platte 1 dann gemäß Fig. 1 von oben nach unten bewegt wird, wodurch der Haltekopf 18 in den hinterschnittenen Nutlängsbereich 7a einfährt. Die Nutbreite D2 des rechteckförmigen Nutlängsbereiches 7c muss also folglich größer als der Durchmesser des Haltekopfes 18 und demzufolge größer als die Schlitzbreite D1 des hinterschnittenen Nutlängsbereiches 7a dimensioniert sein.How out Fig. 1 is visible, the plate groove 7 widens in the direction of the lower plate edge 13 from the described undercut groove longitudinal region 7a for receiving the plate holder 15 on a widened Nutlängsbereich 7b, which extends to the lower plate edge 13. In this case, this broadened groove longitudinal region 7b again, as regards its Nutbreitenverlauf, divided into two stepped mutually remote Nutlängsbereiche 7c, 7d. Directly below the undercut Nutlängsbereiches 7a follows according to the front view Fig. 1 a Nutlängsbereich 7c with a constant width D2, which is formed rectangular in its cross-sectional profile. This groove longitudinal region 7c is of particular importance for plate mounting on the pipe wall, because the holding head 18 can only be inserted into the undercut groove longitudinal region 7a at the front side, for which reason the plate 1 must first be aligned with the plate holder 15 such that the holding head 18 of the holder 15 is inserted into the recess formed by the rectangular Nutlängsbereich 7 c on the back of the plate 5, before the plate 1 then according to Fig. 1 is moved from top to bottom, whereby the holding head 18 enters the undercut groove longitudinal region 7a. The groove width D2 of the rectangular groove longitudinal region 7c must therefore be dimensioned larger than the diameter of the holding head 18 and therefore larger than the slot width D1 of the undercut groove longitudinal region 7a.

Der zweite, in der Breite erweiterte Längserstreckungsbereich 7b der Plattennut 7 besteht aber nicht nur aus diesem rechteckförmigen Nutlängsbereich 7c der Breite D2, sondern noch aus einem weiteren Nutlängsbereich 7d, der sich unterhalb des rechteckförmigen Nutlängsbereiches 7d anschließt und bis zum unteren Plattenrand 13 erstreckt, so dass dieser Nutlängsbereich 7d zur unteren Stirnseite randoffen ist. Die Längen dieser beiden Längsabschnitte 7c, 7d des erweiterten Nutlängsbereiches 7b sind annähernd gleich groß.The second, extended in the width longitudinal extent region 7b of the plate groove 7 but not only consists of this rectangular groove longitudinal portion 7c of the width D2, but also from a further groove longitudinal region 7d, which adjoins below the rectangular groove longitudinal region 7d and extends to the lower plate edge 13, so that this groove longitudinal region 7d is open to the lower end side. The lengths of these two longitudinal sections 7c, 7d of the extended groove longitudinal area 7b are approximately equal.

Vorteilhafterweise ist der die Plattennut 7 zum unteren Plattenrand 13 hin abschließende Längsabschnitt 7d in seiner Breite größer als die Nutbreite D2 des rechteckförmigen Längsabschnittes 7c des erweiterten Nutlängsbereiches 7b. Die Breite des unteren Nut-Längsabschnittes 7d nimmt dabei keilförmig vom unteren Plattenrand 13 in Richtung zum oberhalb folgenden, rechteckförmigen Nut-Längsabschnitt 7c ab, so dass die minimale Nutbreite dieses unteren Nut-Längsabschnittes 7d also an der Übergangsstelle zum rechteckförmigen Nut-Längsabschnitt 7c erreicht ist, wobei diese minimale Nutbreite aber immer noch größer ist als die Nutbreite D2. Infolgedessen ist in diesem Übergangsbereich vom keilförmigen Längsabschnitt 7d zum rechteckförmigen Längsabschnitt 7c der erweiterten Plattennut 7b eine stufenförmige Einengung der Nutbreite festzustellen. Es ist jedoch auch möglich, dass die Breite des Längsabschnitts 7d im Übergang mit dem Längsabschnitt 7c der Nutbreite D2 entspricht.Advantageously, the plate groove 7 to the lower plate edge 13 towards final longitudinal portion 7d in its width is greater than the groove width D2 of the rectangular longitudinal portion 7c of the extended groove longitudinal region 7b. The width of the lower groove longitudinal section 7d decreases in a wedge shape from the lower plate edge 13 in the direction of the above, rectangular groove longitudinal section 7c, so that the minimum groove width of this lower groove longitudinal section 7d reaches at the transition point to the rectangular groove longitudinal section 7c is, but this minimum groove width is still greater than the groove width D2. As a result, in this transition region from the wedge-shaped longitudinal section 7d to the rectangular longitudinal section 7c of the enlarged plate groove 7b, a step-shaped constriction of the groove width is noted. However, it is also possible that the width of the longitudinal section 7d in the transition with the longitudinal section 7c corresponds to the groove width D2.

Kennzeichnend für die vorliegende Erfindung ist, dass in diesem unteren keilförmigen Längsabschnitt 7d der Plattennut 7 ein Haltesegment 8 eingesetzt ist, das in seiner Breite ebenfalls keilförmig und passgenau zum unteren Längsabschnitt 7d der Plattennut 7 ausgeführt ist. Dieses Haltesegment 8 erfüllt eine Funktion, die beim Anblick des Längsschnittes nach Fig. 2 sofort transparent wird. Hier wird die Montage der Platte 1 an einer horizontal über Kopf verlaufenden Rohrwand dargestellt. Die bereits erläuterte Verankerung der Platte 1 durch Abstützung eines Haltekopfes 18 im hinterschnittenen Nutlängsbereich 7a würde durch die auf die Platte 1 bei der dargestellten Überkopf-Montage einwirkende Schwerkraft alleine nicht ausreichen, um die Platte 1 entlang ihrer gesamten Längserstreckung L sicher und in einheitlich engem Abstand zur Rohrwand 2, 3 zu halten. Es würde vielmehr die Gefahr bestehen, dass die Platte 1 um den Halterungspunkt 15 von der Rohrwand 2, 3 wegpendelt. Da die Plattenhalterung 17, 18 in Fig. 2 rechts des Schwerpunkts der Platte 1 angreift, würde dieses Wegpendeln am linken Ende der Platte 1, also am nach Fig. 1 gesehen unteren Plattenendbereich auftreten. Dort erstreckt sich aber der zweite, in der Breite erweiterte Nutlängsbereich 7b, der keine Abstützflächen für einen Haltekopf mit der gleichen Dimension wie der im hinterschnittenen Nutlängsbereich 7a eingesetzte Haltekopf 18 bereitstellt. Daher ist in dem unteren, keilförmigen Längsabschnitt 7d der Plattennut 7 ein Haltesegment 8 eingesetzt, das von seiner vom Nutengrund 9 der Plattennut 7 abgewandten und somit der Rohrwand 2, 3 zugewandten Oberseite 10 ausgehend eine hinterschnittene Aussparung 11 aufweist. Diese Aussparung 11 des Haltesegmentes 8 weist in Übereinstimmung mit der hinterschnittenen Plattennut 7a ein sich zur Rohrwand hin von einem balligen, durchmessergroßen Fußbereich 25 auf einen zylindrischen Durchgangsbereich 26 verjüngendes Querschnittsprofil auf. Der zylindrische Durchgangsbereich 26 der Aussparung 11 ist dabei in seinem Durchmesser kleiner als der Durchmesser des Haltekopfs 24, aber größer als der Durchmesser des Bolzens 23 der Plattenhalterung 16 gewählt, so dass der Haltekopf 24 innerhalb der Aussparung 11 in Halterichtung H formschlüssig verankerbar ist. Um beim Einhängen der Platte 1 in Längsrichtung L ein Eintreten des Haltekopfes 24 in die Aussparung 11 des Haltesegmentes 8 zu ermöglichen, ist die Aussparung 11 längsseitig zum unteren Ende des Haltesegmentes 8 hin geöffnet. Da das Haltesegment 8 wiederum bündig mit dem unteren Plattenrand 13 abschließt, ist die Aussparung 11 des Haltesegmentes 8 also in Längsrichtung L nach unten hin frei geöffnet, so dass der Haltekopf 24 der Plattenhalterung 16 durch die Längsbewegung der Platte 1 von oben nach unten gemäß Fig. 1 bzw. von rechts nach links gemäß Fig. 2 über die offene Längsseite 12 der Aussparung 11 in diese zum Erreichen der in Fig. 1 bis 3 dargestellten Verankerungsposition hineingelegt wird.Characteristic of the present invention is that in this lower wedge-shaped longitudinal portion 7d of the plate groove 7, a holding segment 8 is inserted, which is also wedge-shaped in its width and accurately to the lower longitudinal portion 7d of the plate 7 executed. This holding segment 8 fulfills a function that after looking at the longitudinal section Fig. 2 becomes transparent immediately. Here, the mounting of the plate 1 is shown on a horizontally extending overhead pipe wall. The already explained anchoring of the plate 1 by supporting a holding head 18 in the undercut Nutlängsbereich 7a would not be sufficient alone by the force acting on the plate 1 in the overhead mounting illustrated gravity alone to the plate 1 along its entire longitudinal extent L safe and uniformly close distance to keep the pipe wall 2, 3. Rather, there would be the risk that the plate 1 commutes by the support point 15 of the pipe wall 2, 3. Since the plate holder 17, 18 in Fig. 2 attacking the right of the center of gravity of the plate 1, this path would pendulum at the left end of the plate 1, ie the after Fig. 1 seen lower end plate area occur. There, however, extends the second, extended in width Nutlängsbereich 7b, which provides no support surfaces for a holding head with the same dimension as the inserted in the undercut Nutlängsbereich 7a holding head 18. Therefore, in the lower, wedge-shaped longitudinal section 7d of the plate groove 7, a holding segment 8 is inserted, which has an undercut recess 11 starting from its upper side 10 facing away from the groove bottom 9 of the plate groove 7 and thus facing the tube wall 2, 3. This recess 11 of the holding segment 8, in accordance with the undercut plate groove 7a, has a cross-sectional profile tapering towards the tube wall from a crowned, diameter-sized foot region 25 to a cylindrical passage region 26. The cylindrical passage region 26 of the recess 11 is smaller in diameter than the diameter of the holding head 24, but chosen larger than the diameter of the pin 23 of the plate holder 16, so that the holding head 24 within the recess 11 in the holding direction H is positively anchored. In order to allow entry of the holding head 24 in the recess 11 of the holding segment 8 when hanging the plate 1 in the longitudinal direction L, the recess 11 is longitudinally open to the lower end of the holding segment 8 out. Since the retaining segment 8 in turn is flush with the lower edge of the plate 13, the recess 11 of the retaining segment 8 is thus freely open in the longitudinal direction L downwards, so that the holding head 24 of the plate holder 16 by the longitudinal movement of the plate 1 from top to bottom Fig. 1 or from right to left according to Fig. 2 over the open longitudinal side 12 of the recess 11 in this to reach the in Fig. 1 to 3 shown anchoring position is inserted.

Das Haltesegment 8 ist in den Figuren 4 und 5 in Vorder- und Draufsicht separat dargestellt, wobei aus Fig. 5 erkennbar ist, dass das Haltesegment 8 nicht nur in Längsrichtung L, sondern auch in Halterichtung H keilförmig gestaltet ist. Die keilförmig zulaufenden Flankenflächen 27 des Haltesegmentes 8 liegen dabei im montierten Zustand gemäß Fig. 3 an den in Halterichtung H trapezförmig zulaufenden, also hinterschnittenen Nutseitenflächen 28 der Platte 1 an, so dass das Haltesegment 8 in Halterichtung H formschlüssig im unteren Längsabschnitt 7d der Plattennut 7 verankert ist. Zum Einsetzen des Haltesegmentes 8 in den entsprechenden Längsabschnitt 7d der Plattennut 7 kann das Haltesegment 8 also in dieser Ausführungsform nicht senkrecht zur Plattenrückseite 5 eingesetzt werden, sondern muss vielmehr in die Plattennut 7 in Längsrichtung L durch die untere, offene Stirnseite am Plattenrand 13 eingesteckt und dann bis zum Anschlag an der stufenförmigen Nutverengung vorgeschoben werden. An die keilförmigen Flankenflächen 27 des Haltesegmentes 8 schließen sich zylindrisch-konkav gekrümmte Kantenflächen 29 an, die sich bis zur ebenen Oberseite 10 des Haltesegmentes 8 erstrecken. Fig. 3 zeigt, dass diese zylindrischkonkaven Ausbuchtungen 29 des Haltesegmentes 8 im montierten Zustand die teilzylindrischen Vertiefungen 6 auf der Plattenrückseite 5 stetig fortbilden und die Oberseite 10 des Haltesegmentes 8 dabei in gleichem Abstand zum Rohrsteg 2 liegt wie die ebene Zwischenfläche 20 der Plattenrückseite 5. Das Haltesegment 8 stellt also mit seiner aus der Plattennut 7 hervortretenden Kontur eine formgetreue Anpassung an die Geometrie der Plattenrückseite 5 dar, so dass auch in dem Einsetzbereich des Haltesegmentes 8 die Abstände zur Rohrwand die gleichen sind wie im übrigen Plattenbereich und identische Mittel 15, 16 zur Plattenhalterung verwendet werden können. Zusätzlich zu der für die Aufnahme der Plattenhalterung 16 vorgesehenen Aussparung 11 weist das Haltesegment 8 noch eine in Längsrichtung L verlaufende Durchgangsbohrung 30 auf, die in die Aussparung 11 mündet. Diese Längsbohrung 30 dient dazu, dass beim abschließenden Hinterfüllen oder Hintergießen des Zwischenraumes 19 zwischen Platte 1 und Rohrwand der Vergussmörtel oder -beton auch in die Aussparung 11 des Haltesegmentes 8 einfließen kann, womit der dort eingelegte Haltekopf 24 sicher mit der Platte 1 stoffschlüssig fixiert ist.The holding segment 8 is in the FIGS. 4 and 5 shown separately in front and top view, with Fig. 5 It can be seen that the retaining segment 8 is designed wedge-shaped not only in the longitudinal direction L, but also in the holding direction H. The wedge-shaped tapered flank surfaces 27 of the retaining segment 8 lie in the assembled state according to Fig. 3 to the in the holding direction H trapezoidal tapered, so undercut groove side surfaces 28 of the plate 1, so that the holding segment 8 is anchored in the holding direction H positively in the lower longitudinal portion 7d of the plate 7. For insertion of the retaining segment 8 in the corresponding longitudinal portion 7 d of the plate 7, the retaining segment 8 can not be used perpendicular to the plate back 5 in this embodiment, but rather must be inserted into the plate groove 7 in the longitudinal direction L through the lower, open end on the plate edge 13 and then be advanced to the stop on the stepped groove narrowing. The wedge-shaped flank surfaces 27 of the retaining segment 8 are adjoined by cylindrically-concavely curved edge surfaces 29, which extend as far as the planar upper side 10 of the retaining segment 8. Fig. 3 shows that these cylindrical concave bulges 29 of the holding segment 8 in the assembled state, the partial cylindrical recesses 6 on the back of the plate 5 continue to educate and the top 10 of the holding segment 8 at the same distance from the tube web 2 as the flat intermediate surface 20 of the plate back 5. The holding segment. 8 Thus, with its protruding from the plate groove 7 contour is a dimensionally accurate adaptation to the geometry of the plate back 5, so that even in the insertion of the holding segment 8, the distances to the tube wall are the same as in the rest of the plate area and identical means 15, 16 used for plate holder can be. In addition to the recess 11 provided for receiving the plate holder 16, the holding segment 8 also has a through hole 30 running in the longitudinal direction L, which opens into the recess 11. This longitudinal bore 30 serves to ensure that in the final backfilling or back-pouring of the gap 19 between plate 1 and tube wall of grout or concrete can also flow into the recess 11 of the retaining segment 8, whereby the holding head 24 inserted there is securely fixed to the plate 1 cohesively ,

Wie aus den Figuren 1 und 2 erkennbar ist, wird die obere Plattenhalterung 15 zur Erreichung der dargestellten Montageposition so weit in den hinterschnittenen Längserstreckungsbereich 7a der Plattennut 7 eingeschoben, bis diese mit ihrem Haltekopf 18 am oberen, innerhalb des Plattenquerschnitts auslaufenden Ende der Plattennut 7 anschlägt, wodurch der Haltekopf 18 der oberen Plattenhalterung 15 nicht nur in Halterichtung H, sondern auch in Längsrichtung L eine Abstützung der Platte 1 gewährleistet. Der Längsabstand vom oberen Ende der Plattennut 7 bis zur Ausnehmung 11 des eingesetzten Haltesegments 8 ist dabei an den Längsabstand zwischen den beiden Plattenhalterungen 15, 16 derart angepasst, dass beim Längsanschlag des Haltekopfes 18 der oberen Plattenhalterung 15 am Nutende der Haltekopf 24 der unteren Plattenhalterung 16 in die Ausnehmung 11 des Haltesegments 8 einfährt und dort ebenfalls in Längsrichtung L anschlägt. Somit tragen vorteilhafterweise im montierten Zustand beide Plattenhalterungen 15, 16 in gleichem Maße die in Halterichtung H und in Längsrichtung L wirkenden Gewichtskraftkomponenten der Platte 1. Für die Montage an einer vertikal verlaufenden Rohrwand, bei der eine positionsstabile Lagerung der Platte 1 schon alleine durch die obere Plattenhalterung 15 abgesichert ist, kann die feuerfeste Platte 1 auch ohne eingesetztes Haltesegment 8 verwendet werden.Like from the FIGS. 1 and 2 can be seen, the upper plate holder 15 is pushed to achieve the illustrated mounting position so far into the undercut longitudinal extension portion 7a of the plate 7 until it abuts with its holding head 18 at the top, within the plate cross-section end of the plate groove 7, whereby the holding head 18 of the upper Plate holder 15 not only in the holding direction H, but also in the longitudinal direction L ensures a support of the plate 1. The longitudinal distance from the upper end of the plate groove 7 to the recess 11th the holding segment 8 used is adapted to the longitudinal distance between the two plate holders 15, 16 such that the longitudinal stop of the holding head 18 of the upper plate holder 15 at the Nutende the holding head 24 of the lower plate holder 16 enters the recess 11 of the retaining segment 8 and there also in Lengthwise L strikes. Thus, in the assembled state, both plate supports 15, 16 advantageously carry the weight force components of the plate 1 acting in the holding direction H and in the longitudinal direction L. For mounting on a vertically extending tube wall in which a positionally stable mounting of the plate 1 is alone by the upper Panel holder 15 is secured, the refractory plate 1 can also be used without inserted retaining segment 8.

Claims (12)

  1. Refractory plate (1) for protectively covering at least two pipes (3) interconnected by means of a connecting piece (2), in particular cooing pipes extending along a wall of a combustion chamber, the plate (1) comprising a front face (4) and a rear face (5) which faces towards the pipes (3) in the mounted state and comprises at least two partially cylindrical indentations (6), between each of which a plate groove (7) is provided which extends in the longitudinal extension L of the plate (1), the plate groove (7) being formed having a cross-sectional profile which tapers to a slot width D1 towards the rear side (5) of the plate in a first longitudinal extension region (7a) in order to receive a first plate holder (15), and said plate groove being formed in a second longitudinal extension region (7b) which is adjacent to said first longitudinal extension region so as to have a cross-sectional profile, in which, when the first plate holder (15) is introduced into the first longitudinal extension region (7a) of the plate groove (7), the narrowest groove width D2 is greater than the slot width D1 of the first longitudinal extension region (7a), characterised in that the refractory plate (1) comprises a retaining segment (8) which is inserted into the second longitudinal extension direction (7b) of the plate groove (7) whilst maintaining a distance from the first longitudinal extension region (7a) of the plate groove (7), an undercut recess (11) for receiving a second plate holder (16) leading from the upper side (10) of said retaining portion that is remote from the bottom (9) of the groove.
  2. Refractory plate according to claim 1, characterised in that the undercut recess (11) in the retaining portion (8) Is open at one end in the longitudinal direction L.
  3. Refractory plate according to either claim 1 or claim 2, characterised in that the width of the second longitudinal extension region (7b) of the plate groove (7) decreases in a wedge-like manner towards the first longitudinal extension region (7a) of the plate groove (7).
  4. Refractory plate according to any of claims 1 to 3, characterised in that the second longitudinal extension region (7b) of the plate groove (7) is composed of two distinct step-shaped longitudinal segments (7c, 7d).
  5. Refractory plate according to any of claims 1 to 4, characterised in that the width of the retaining segment (8) is designed to exactly fit the second longitudinal extension region (7b) of the plate groove (7).
  6. Refractory plate according to claim 5, characterised in that the sloped surfaces (27) of the retaining segment (8) diverge towards the rear face (5) of the plate.
  7. Refractory plate according to anyone of claims 1 to 6, characterised in that the second longitudinal extension region (7b) of the plate groove (7) extends as far as the plate edge (13) and the inserted retaining segment (8) is flush with the lower plate edge (13).
  8. Refractory plate according to anyone of claims 1 to 7, characterised in that the undercut recess (11) of the inserted retaining segment (8) and the first longitudinal extension region (7a) of the plate groove (7) have the same cross-sectional profile transversely to the longitudinal extension L of the plate (1).
  9. Refractory plate according to anyone of claims 1 to 8, characterised in that the first longitudinal extension region (7a) of the plate groove (7) comes to a blind end, in the direction leading away from the second longitudinal extension region (7b), before the upper edge (14) of the plate (1), thus forming a longitudinal stop for the first plate holder (15).
  10. Refractory plate according to anyone of claims 1 to 9, characterised in that the retaining segment (8) is cemented in place.
  11. Pipe wall lining comprising a plurality of refractory plates (1) according to anyone of claims 1 to 10 that are arranged next to one another and one on top of the other, wherein each of the plates (1) is supported, in a retaining direction H perpendicular to the front and rear face (4, 5) of the plate (1), on at least one first plate holder (15) by means of the first longitudinal extension region (7a) of the plate groove (7) and on a second plate holder (16) by means of the undercut recess (11) of the inserted retaining portion (8), and wherein the plate holders (15, 16) are fastenable to the connecting pieces (2) of the pipe wall (2, 3).
  12. Pipe wall lining according to claim 11, characterised in that each of the plate holders (15, 16) is formed by a bolt (17, 23) that can be fastened to the connecting piece (2) and by a retaining head (18, 24) which is attached, preferably screwed, to the plate-side end of the bolt (17, 23), the retaining head (18, 24) being supported, in the retaining direction H, on the undercut sides of the first longitudinal extension region (7a) of the plate groove (7) and on the undercut sides of the recess (11) in the retaining portion (8), respectively.
EP10005435.2A 2009-06-06 2010-05-26 Refractory tile for a pipe wall cladding and pipe wall cladding produced from said tiles Not-in-force EP2261561B1 (en)

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NL1041195B1 (en) * 2014-06-06 2016-04-01 Hkh Dev B V Refractory lining for a pipe wall of an incinerator.
WO2015187007A1 (en) * 2014-06-06 2015-12-10 Hkh Development B.V. Refractory tube wall lining for an incinerator
DE102017007606B4 (en) * 2017-08-14 2019-02-21 Detlef R. Elling Heat exchanger protection system and method of constructing a heat exchanger protection system

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US5243801A (en) * 1992-02-20 1993-09-14 The Babcock & Wilcox Company Refractory tile for heat exchanger protection
DE4324423C1 (en) * 1993-07-21 1994-04-28 Didier Werke Ag Refractory lining fixing for furnaces - esp. rubbish incinerators with heat recovery
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DE102009024128B3 (en) 2010-09-16
EP2261561A2 (en) 2010-12-15
EP2261561A3 (en) 2015-06-03

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