EP0904512B1 - Hitzeschildanordnung, insbesondere für strukturteile von gasturbinenanlagen - Google Patents
Hitzeschildanordnung, insbesondere für strukturteile von gasturbinenanlagen Download PDFInfo
- Publication number
- EP0904512B1 EP0904512B1 EP97925907A EP97925907A EP0904512B1 EP 0904512 B1 EP0904512 B1 EP 0904512B1 EP 97925907 A EP97925907 A EP 97925907A EP 97925907 A EP97925907 A EP 97925907A EP 0904512 B1 EP0904512 B1 EP 0904512B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat
- arrangement according
- heat shield
- shield arrangement
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
-
- 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/007—Continuous combustion chambers using liquid or gaseous fuel constructed mainly of ceramic components
-
- 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
- F27D1/14—Supports for linings
- F27D1/145—Assembling elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M2900/00—Special features of, or arrangements for combustion chambers
- F23M2900/05004—Special materials for walls or lining
Definitions
- the present invention relates to a heat shield assembly to protect a support structure from a hot one Fluid according to the preamble of claim 1.
- Such a heat shield arrangement is for example from the EP 0 224 817 known.
- the heat shield assembly is a heat-resistant material has existing inner lining.
- the inner lining is composed of blanket coverage high-temperature-resistant columns arranged side by side, plate-shaped heat shield elements.
- the individual heat shield elements are heat moveable on the support structure by means of Anchored bolt.
- the individual heat shield elements are like a mushroom formed with a hat part and a shaft part, the Hat part a flat or spatial, polygonal plate body is.
- Such heat shield arrangements to protect a support structure compared to a hot fluid with a heat-resistant material existing inner lining are used in particular Formation of a combustion chamber, in particular for gas turbines, used.
- a combustion chamber in particular for gas turbines
- the Inner lining exposed to a relatively high temperature.
- the individual heat shield elements a heat shield arrangement are also subject a dynamic exposure to vibrations that occur during the combustion process in a combustion chamber of a gas turbine occur.
- DE 41 14 768 A1 describes a heat shield on a hot gas leading structure having a supporting wall, in particular a flame tube for a gas turbine, consisting of a Variety of stones described.
- the stones are essentially are arranged side by side and are each by means of at least one associated holder on the Attached wall.
- Each stone has one facing the supporting wall Cold side and a hot side facing away from the supporting wall and at least two flanks on which the cold side with the Connect hot side.
- Each associated holder is on the bulkhead attached and contains at least two interacting Brackets that the assigned stone on the Grip the cold side between the flanks. Every holder is there preferably made of sheet metal and each stone from one Ceramics.
- US Pat. No. 5,333,443 relates to a sealing arrangement for sealing an opening between a combustion chamber brick and one Support structure of a combustion chamber.
- This combustion chamber stone provides a fireproof lining of part of one Annular combustion chamber.
- the combustion chamber stone is with a vertically bent edge in an opening of the support structure pushed and fixed with a bolt. Between the combustion chamber stone and an opening remains in the support structure. Through this cooling air, which through holes in the support structure against the inside of the combustion chamber brick is escaped. To prevent loss of cooling air a sealing arrangement is provided.
- the combustion chamber stone is also complete and homogeneous from a refractory Ceramic is made and is erosion and corrosion resistant.
- the object of the present invention is to create a improved heat shield arrangement of the generic type, which is effective at elevated temperatures. Further through the heat shield arrangement, the coolant requirement and - reduce consumption. Another object of the invention is to reduce nitrogen oxide emissions from a gas turbine.
- this object is achieved by a heat shield arrangement with a layered structure with the features of the claim 1 solved.
- Advantageous further developments and refinements the heat shield arrangement are the subject of the dependent Expectations.
- the heat shield arrangement according to the invention for protecting a Support structure against a hot fluid with made of heat-resistant Material of existing inner lining stands out characterized in that the heat shield elements from an erosion and Corrosion-resistant, preferably high-temperature resistant material consist. Between each heat shield element and the Support structure is formed thermal insulation.
- This configuration of the heat shield arrangement makes a layered construction of the inner lining achieved. By this layered structure of the inner lining becomes a Functional separation of individual inner lining tasks reached.
- the individual heat shield elements in unites all requirements placed on them.
- the heat shield elements have a protective function against erosion and Corrosion influences of the gas atmosphere.
- the heat shield element as such does not necessarily have to be thermally insulating Act.
- the thermal insulation that exists between each Heat shield element and the support structure is formed preferably by a mat made of a fiber material or formed by a refractory ceramic. With refractory ceramics it is, for example, an insulating stone. Thereby, that the thermal insulation by a heat shield element is protected against erosion and corrosion, the thermal Insulation consist of a material that through the Gas atmosphere attacked for example in a combustion chamber could be.
- the inner lining can, if necessary, by a Coolant to be cooled.
- the coolant consumption is due the layered design of the inner lining reduced. If the coolant is cooling air, this also reduces the amount of fuel introduced into the combustion chamber Air. This allows the combustion process in the combustion chamber near the ideal air ratio operated, thereby reducing the emission of nitrogen oxides becomes. Due to the heat shield arrangement, a higher turbine inlet temperature reached. An equalization The temperature can also be reached through air filtering become.
- the heat shield element preferably consists of a structural ceramic.
- Structural ceramics are preferred around silicon carbide or silicon nitride.
- a structural ceramic which consists of such a material has the positive Properties that these regarding the corrosion and Erosion influences of the gas atmosphere are insensitive.
- Structural ceramics are also characterized by high temperature resistance out.
- Silicon carbide and silicon nitride are the preferred materials used to form the heat shield elements are usable.
- the heat shield elements however, can also consist of other ceramic materials, provided they have the preferred properties Materials are similar.
- the heat shield elements are preferred formed essentially plate-shaped. Prefers is an embodiment of the heat shield elements in which at least the edge region facing the hot fluid is curved is trained.
- these are Heat shield element and the insulating block essentially identical.
- the heat shield element can also be a ceramic coated metal plate.
- the heat shield elements are by means of a fastening element, in particular a bolt, anchored to the support structure.
- the bolt is preferably a made of a ceramic material, preferably of the same Material like the heat shield element, especially made of Silicon carbide or silicon nitride, existing bolt.
- the Bolt preferably has a head at a free end on.
- the heat shield element has a through opening through which the bolt extends, the The head of the bolt rests on the heat shield element. By the head of the bolt becomes the heat shield element on the one hand and the head of the bolt seals the Through opening of the heat shield element.
- P refer the heat shield element has a seat for the head of the Bolt on so that the head sunk in the heat shield element is.
- the insulating block has preferably a channel through which the Bolt extends through. Different thermal expansions of the bolt, the heat shield element and the insulating block to compensate, the bolt is preferably with play arranged in the channel of the insulating brick.
- the heat shield element is preferably movable against heat the supporting structure by means of the fastening element, the bolt, anchored.
- the material that is created is the bolt preferably against a spring force in the axial direction of the Movable bolt. It is preferably anchored on the wall of the supporting structure facing away from the inner lining.
- the support structure has at least one wall, through which at least one end portion of the bolt extends.
- a spring element engages on the end section of the bolt on, preferably a compression spring.
- the Compression spring surrounds the end portion of the bolt.
- a holding element is arranged on the end section of the bolt, that forms a first abutment for the compression spring.
- On the wall of the support structure is preferably a spacer arranged, which is a second abutment for the compression spring forms.
- the holding element is detachable with the end section of the bolt, preferably wedge-shaped, connected.
- the end section a circumferential groove in which a wedge, preferably a wedge-shaped, circumferential formed on the holding element Projection, intervenes.
- a cap is preferred connected to the holding element so that the cap, the holding element and the spacer form a chamber, the Cap surrounds the spacer.
- the cap can be used be connected to the spacer, in which case the Cap surrounds the holding element. In the latter embodiment there is a displacement of the holding element within the cap in the manner of a piston / cylinder arrangement.
- to Check the compression spring is the cap with the holding element or releasably connected to the spacer, preferably screwed.
- the assembly of the heat shield arrangement in that an insulating block a heat shield element is arranged. Then the bolt is through the heat shield element and passed the insulating stone through. An end section of the Bolzens protrudes from the insulating stone. This end section is then formed by a in the combustion chamber wall To pass the hole.
- the spacer one in the channel of the Isolierstein protruding guide tube By this configuration can be a pre-assembly of the insulating block on Follow the guide tube of the spacer.
- these are preferably by means of a safety bolt connected to the structure.
- the outer contour of the heat shield element can be different Be geometry.
- the insulating block preferably with the heat shield element positively connected.
- the insulating stone preferably has in a surface on a recess in which a Heat shield element correspondingly formed projection intervenes. This causes a shift or twist of the insulating block relative to the heat shield element prevented.
- the heat shield arrangement it is cooled with a coolant.
- the Cooling a heat shield arrangement is known per se.
- a coolant between the heat shield element and the insulating brick passed through, for which purpose at least one coolant channel between the heat shield element and the insulating stone provided is.
- the coolant channel has an inlet which is connected to a Coolant supply channel is connected, and an outlet, which is open to the surrounding atmosphere.
- Training the Coolant channel is preferably made in that the heat shield element by far from the thermal insulation below Formation of a gap-shaped coolant channel arranged is.
- the distance between the heat shield element and the thermal insulation is between 0.3 and 1.5 mm, preferably 1 mm.
- Training is preferred at which is the distance between 0.3 and 1.5 mm, preferably 1 mm, is.
- Three spacers are preferably provided, which are arranged on an imaginary circumference, where the center of the imaginary circumference essentially in The center of the heat shield element lies.
- One Training is the bolt that engages the heat shield element arranged in the center of the heat shield element.
- the spacers are formed on the heat shield element and / or the insulating block.
- An embodiment is preferred in which the spacers form an integral part of the heat shield element or the insulating block.
- the spacers are designed in the form of knobs. For example, they can have the shape of a truncated pyramid.
- the contact surface of the spacers on which the heat shield element or the insulating block rests is preferably between 9 and 64 mm 2 , in particular 25 mm 2 .
- the coolant channel can be in the insulating brick and / or in the heat shield element be partially trained.
- the feeding of a Coolant takes place via the one formed in the insulating block Channel.
- the cap at least has a coolant supply hole.
- the coolant supply holes in the cap can cool be controllable.
- the coolant supply holes each form a throttle for a cooling fluid. To the loss of the coolant To keep it as low as possible, it is proposed that the Chamber essentially sealed airtight to the environment is.
- Figure 1 shows a segment of a heat shield arrangement for Protection of a support structure 1 against a hot fluid.
- the Segment forms an inner lining 2a.
- the inner lining 2a is composed of nationwide, leaving Columns 2b side by side heat shield elements 2.
- the heat shield element 2 consists of an erosion and corrosion-resistant material. It is preferably a ceramic-coated metal plate.
- Between the heat shield element 2 and the support structure 1 is an insulating stone 3 arranged.
- the insulating block 3 consists of a refractory ceramics.
- connection of the heat shield element 2 with the support structure 1 takes place by means of a fastening element, in particular a bolt 4.
- the bolt 4 extends through a through opening 5 formed in the heat shield element 2.
- the bolt 4 has a head 6 at a free end, the rests on the heat shield element 2.
- the heat shield element 2 has a seat 7 for the head 6 of the bolt 4, so that the head 6 is sunk in the heat shield element 2.
- the insulating brick 3 has a channel 8 through which the bolt 4 extends through it.
- the insulating block 3 lies on the support structure 1.
- the insulating brick 3 has in its the surface facing the heat shield element 2 has a recess 9, in which a corresponding on the heat shield element 2 trained projection 10 engages.
- the bolt 4 has an end portion 11 which extends through the Wall of the support structure 1 extends through.
- the Wall of the support structure 1 on a through hole 12.
- the End portion 11 of the bolt 4 is surrounded by a spring element 13, which is designed in the form of a compression spring.
- the an abutment of the spring element 13 is by a holding element 14 formed.
- the holding element 14 has a conical shape expanding bore 17 through which the end portion 11 of the bolt 4 extends through it.
- the bolt 4 instructs its end section 1 has a circumferential groove 15 into which a Wedge 16 engages.
- the wedge 16 lies on the conically widening Bore 17 of the spring element. Through the wedge connection the holding element 14 is held on the bolt 4.
- a cap 18 is screwed to the holding element 14.
- the Cap 18 has a jacket 19 which faces the wall of the Holding structure 1 extends.
- the cap 18 is cylindrical educated.
- the one opposite the holding element 14 Section of the cap 18 encompasses one arranged on the support structure 1 Spacer 20.
- the spacer 20 has one Recess in which the spring element 13 engages.
- Of the spacer 20 is also provided with a guide tube 21 provided, which at least partially in the insulating stone 3rd protrudes.
- the inner cross section of the guide tube 21 is larger than the cross section of the shaft of the bolt 4.
- the Spring element 13 is preloaded between the spacer 20 and the holding element 14 are arranged. By the spring force of the spring element 13 is one after the holding element 14 externally directed force introduced into the bolt 4. This Force is applied to the heat shield element via the head 6 of the bolt 2 transferred, whereby the heat shield element 2 against the insulating brick 3 is pressed on the wall of the Support structure 1 is applied.
- the cap 18 is dimensioned so that it is at a distance from the wall the support structure 1 ends, whereby a relative movement of the Cap 18 is permitted in the axial direction of the bolt 4.
- the securing bolt 22 extends through one in the wall bore 23 formed through the support structure 1.
- the securing bolt 22 is connected via a screw connection 24 connected to the wall of the support structure 1.
- a blind hole 25 is formed, into which the securing bolt 22 protrudes.
- a locking pin 26 extends through this.
- the locking pin 26 is substantially perpendicular to Longitudinal axis of the locking bolt 22 positioned.
- a bore 27 is formed for introduction.
- FIG. 2 shows a bottom view of the one shown in FIG Arrangement. With the section line A-A is the view labeled according to Figure 1.
- FIG. 3 shows a second exemplary embodiment of a heat shield arrangement shown.
- the basic structure of this The arrangement corresponds to that shown in FIGS. 1 and 2 Arrangement. In this respect, to avoid repetitions the description of Figures 1 and 2 referenced.
- the cap 18 Bores 29 which open into the chamber 28. Chamber 28 is by the spacer 20, the cap 18 and the holding element 14 limited. Cooling fluid connection lines can be attached to the bores 29 be connected. A cooling fluid flows through the bores 29 into the chamber 28. From the chamber 28, the cooling fluid flows through the guide tube 21 into the channel 8 formed in the insulating brick 3. Between the Insulating brick 3 and the heat shield element 2 is an outward directed channel 30 formed through which the cooling fluid the channel 8 flows out of the arrangement.
- the channel 30 is formed in the illustrated embodiment 3.
- the Channel 30 can also through recesses in the heat shield element 2 and in the insulating brick 3 and only in the heat shield element 2 be formed.
- FIG 4 shows an embodiment of a heat shield element 2 in longitudinal section.
- the heat shield element 2 consists, for example, of silicon carbide or silicon nitride. It has spacers 31 on the surface facing an insulating block (not shown).
- the spacers 31 are essentially truncated pyramids. They have a height of approx. 1 mm and a contact area of approx. 25 mm 2 .
- the spacers 31 are on an imaginary circumference K educated.
- the spacers are preferably equidistant arranged to each other.
- the center of the imaginary circumference K lies essentially in the geometric center of the Heat shield element 2, preferably the center falls of the imaginary circumference K with the geometric center of the heat shield element 2 together.
- the through opening 5 is formed in the center Z, through a bolt 4, such as that shown in FIGS. 1 and 3 is shown, is extendable.
- the spacers 31 ensure that the heat shield element 2 arranged at a distance from an insulating block 3 on this is.
- a cooling fluid then flows between the insulating brick 3 and the heat shield element 2 through, which the Heat shield element 2 is cooled.
- the spacers 31 also on one Isolierstein 3 can be formed.
- the height or the Gap size of the cooling channel 30, which by the spacers 31st arises, can be adapted to the thermal task become.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ceramic Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Thermal Insulation (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
Description
- Fig. 1
- Einen Vollschnitt durch eine Hitzeschildanordnung eines ersten Ausführungsbeispiels,
- Fig. 2
- eine Unteransicht der Anordnung nach Figur 1,
- Fig. 3
- einen Vollschnitt durch eine zweite Ausführungsform der Hitzeschildanordnung,
- Fig. 4
- eine Vorderansicht eines Hitzeschild-Elementes mit Abstandshaltern,
- Fig. 5
- das Hitzeschild-Element nach Fig. 4 in einer Unteransicht.
Claims (42)
- Hitzeschildanordnung zum Schutz einer Tragstruktur (1) gegenüber einem heißen Fluid mit aus hitzebeständigem Material bestehender Innenauskleidung (2a), die zusammengesetzt ist aus flächendeckend unter Belassung von Spalten (2b) nebeneinander angeordneten und wärmebeweglich an der Tragstruktur (1) mittels jeweils zumindest eines Befestigungselementes (4), insbesondere eines Bolzens (4), verankerten hochtemperaturfesten, im wesentlichen plattenförmigen Hitzeschild-Elementen (2), wobei die Hitzeschild-Elemente (2) aus einem erosions- und korrosionsfesten Werkstoff bestehen,
dadurch gekennzeichnet, daß zwischen jedem Hitzeschild-Element (2) und der Tragstruktur (1) ein thermisch isolierendes Material (3) angeordnet ist. - Hitzeschildanordnung nach Anspruch 1,
dadurch gekennzeichnet, daß das Hitzeschild-Element (2) aus einer Strukturkeramik besteht. - Hitzeschildanordnung nach Anspruch 2,
dadurch gekennzeichnet, daß das Hitzeschild-Element (2) aus Siliziumcarbid besteht. - Hitzeschildanordnung nach Anspruch 2,
dadurch gekennzeichnet, daß das Hitzeschild-Element (2) aus Siliziumnitrid besteht. - Hitzeschildanordnung nach Anspruch 1,
dadurch gekennzeichnet, daß das Hitzeschild-Element (2) aus einer wenigstens einseitig keramisch beschichteten Metallplatte besteht. - Hitzeschildanordnung nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß wenigstens ein dem heißen Fluid zugewandter Randbereich des Hitzeschild-Elementes (2) gekrümmt ausgebildet ist. - Hitzeschildanordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die thermische Isolierung (3) durch eine Matte aus einem Faserwerkstoff gebildet ist.
- Hitzeschildanordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die thermische Isolierung (3) durch eine Feuerfestkeramik gebildet ist.
- Hitzeschildanordnung nach Anspruch 8,
dadurch gekennzeichnet, daß die die Feuerfestkeramik in Form von Isoliersteinen (3) vorliegt. - Hitzeschildanordnung nach Anspruch 9,
dadurch gekennzeichnet, daß das Hitzeschild-Element (2) und der Isolierstein (3) im wesentlichen dekungsgleich sind. - Hitzeschildanordnung nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, daß der Bolzen (4) aus einer Strukturkeramik besteht, vorzugsweise aus Siliziumcarbid oder Siliziumnitrid. - Hitzeschildanordnung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die thermische Isolierung (3) einen Kanal (8) aufweist, durch den sich der Bolzen (4) hindurch erstreckt.
- Hitzeschildanordnung nach Anspruch 12,
dadurch gekennzeichnet, daß der Bolzen (4) mit Spiel im Kanal (8) angeordnet ist. - Hitzeschildanordnung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß der Bolzen (4) an einem freien Ende einen Kopf (6) aufweist, und daß das Hitzeschild-Element (2) eine Durchgangsöffnung (5) aufweist, durch die sich der Bolzen (4) hindurch erstreckt und der Kopf (6) auf dem Hitzeschild-Element (2) aufliegt.
- Hitzeschildanordnung nach Anspruch 14,
dadurch gekennzeichnet, daß das Hitzeschild-Element (2) einen Sitz (7) für den Kopf (6) aufweist, so daß der Kopf (6) im Hitzeschild-Element (2) versenkt ist, vorzugsweise plan mit der Oberfläche des Hitzeschild-Elementes abschließt. - Hitzeschildanordnung nach Anspruch 14 oder 15,
dadurch gekennzeichnet, daß der Kopf (6) im wesentlichen gasdicht auf dem Hitzeschild-Element (2) aufliegt. - Hitzeschildanordnung nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß der Bolzen (4) gegen eine Federkraft in axialer Richtung des Bolzens (4) verschieblich ist.
- Hitzeschildanordnung nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Tragstruktur (1) wenigstens eine Wand aufweist, durch die sich wenigstens ein Endabschnitt (11) des Bolzens (4) erstreckt.
- Hitzeschildanordnung nach Anspruch 18,
dadurch gekennzeichnet, daß an dem Endabschnitt (11) des Bolzens (4) ein Federelement (13) angreift. - Hitzeschildanordnung nach Anspruch 19,
dadurch gekennzeichnet, daß das Federelement (13) eine Druckfeder ist. - Hitzeschildanordnung nach Anspruch 20,
dadurch gekennzeichnet, daß die Druckfeder (13) den Endabschnitt (11) umgibt. - Hitzeschildanordnung nach Anspruch 19 oder 21,
dadurch gekennzeichnet, daß an dem Endabschnitt (11) ein Halteelement (14) und an der Wand der Tragstruktur (1) ein Distanzstück (20) angeordnet sind, wobei das Halteelement (14) ein erstes und das Distanzstück (20) ein zweites Widerlager für das Federelement (13) bildet. - Hitzeschildanordnung nach Anspruch 22,
dadurch gekennzeichnet, daß das Halteelement (14) mit dem Endabschnitt (11) des Bolzens (4) lösbar verbunden ist. - Hitzeschildanordnung nach Anspruch 23,
dadurch gekennzeichnet, daß zwischen dem Halteelement (14) und dem Bolzen (4) eine keilförmige Verbindung ausgebildet ist. - Hitzeschildanordnung nach Anspruch 23 oder 24,
dadurch gekennzeichnet, daß der Endabschnitt (11) eine umlaufende Nut (15) aufweist, in die ein am Halteelement (14) ausgebildeter keilförmiger, umlaufender Vorsprung (16) eingreift. - Hitzeschildanordnung nach einem der Ansprüche 22 bis 25, dadurch gekennzeichnet, daß eine Kappe (18) mit dem Halteelement (14) oder mit dem Distanzstück (20) verbunden ist, so daß die Kappe (18), das Halteelement (14) und das Distanzstück (20) eine Kammer (29) begrenzen, wobei die Kappe (18) das Halteelement (14) oder das Distanzstück (20) umgibt.
- Hitzeschildanordnung nach Anspruch 26,
dadurch gekennzeichnet, daß die Kappe (18) mit dem Halteelement (14) oder dem Distanzstück (20) lösbar verbunden, vorzugsweise verschraubt, ist. - Hitzeschildanordnung nach einem der Ansprüche 22 bis 27, dadurch gekennzeichnet, daß das Distanzstück (20) ein in den Kanal (8) hineinragendes Führungsrohr (21) aufweist.
- Hitzeschildanordnung nach einem der Ansprüche 1 bis 28, dadurch gekennzeichnet, daß die thermische Isolierung (3), insbesondere der Isolierstein (3), mittels eines Sicherungsbolzens (22) mit der Tragstruktur (1) verbunden ist.
- Hitzeschildanordnung nach einem der Ansprüche 1 bis 29, dadurch gekennzeichnet, daß zwischen dem Hitzeschild-Element (2) und der thermischen Isolierung (3), insbesondere einem Isolierstein (3), wenigstens ein Kühlmittelkanal (30) ausgebildet ist, dessen Einlaß mit einem Kühlmittelzuführkanal verbunden ist und dessen Auslaß zur Umgebungsatmosphäre hin offen ist.
- Hitzeschildanordnung nach Anspruch 30,
dadurch gekennzeichnet, daß das Hitzeschild-Element (2) mit Abstand zu der thermischen Isolierung (3) unter Ausbildung eines spaltförmigen Kühlmittelkanals (30) angeordnet ist. - Hitzeschildanordnung nach Anspruch 31,
dadurch gekennzeichnet, daß der Abstand zwischen 0,3 und 1,5 mm, vorzugsweise 1 mm, beträgt. - Hitzeschildanordnung nach Anspruch 31 oder 32, gekennzeichnet durch wenigstens einen Abstandhalter (31), der zwischen dem Hitzeschild-Element (2) und der thermischen Isolierung (3) ausgebildet ist.
- Hitzeschildanordnung nach Anspruch 33,
dadurch gekennzeichnet, daß wenigstens drei Abstandshalter (31) auf einem gedachtem Kreisumfang (K) ausgebildet sind, wobei der Mittelpunkt des gedachten Kreisumfangs (K) im wesentlichen im Zentrum (Z) des Hitzeschild-Elementes (2) liegt. - Hitzeschildanordnung nach Anspruch 33 oder 34, dadurch gekennzeichnet, daß die Abstandshalter (31) an dem Hitzeschild-Element (2) und/oder der thermischen Isolierung (3) ausgebildet sind.
- Hitzeschildanordnung nach Anspruch 35,
dadurch gekennzeichnet, daß die Abstandshalter (31) einstückig mit dem Hitzeschild-Element (2) oder der thermischen Isolierung (3) ausgebildet sind. - Hitzeschildanordnung nach einem der Ansprüche 33 bis 36, dadurch gekennzeichnet, daß die Abstandshalter (31) in Form von Noppen ausgebildet sind.
- Hitzeschildanordnung nach Anspruch 37,
dadurch gekennzeichnet, daß die Abstandshalter (31) eine Auflagefläche zwischen 9 mm2 und 64 mm2, vorzugsweise von 25 mm2, aufweisen. - Hitzeschildanordnung nach einem der Ansprüche 38 bis 38, dadurch gekennzeichnet, daß der Kühlmittelzuführkanal durch den Kanal (8) im Isolierstein (3) gebildet ist.
- Hitzeschildanordnung nach Anspruch 26 oder 27 und einem der Ansprüche 30 bis 39,
dadurch gekennzeichnet, daß die Kappe (18) wenigstens eine Kühlmittelzuführbohrung (29) aufweist. - Hitzeschildanordnung nach Anspruch 40,
dadurch gekennzeichnet, daß die Kühlmittelzuführbohrung (29) eine Drossel für ein Kühlfluid bildet. - Hitzeschildanordnung nach Anspruch 40 oder 41, dadurch gekennzeichnet, daß die Kappe (18) zur Umgebung hin im wesentlichen luftdicht ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19623300A DE19623300A1 (de) | 1996-06-11 | 1996-06-11 | Hitzeschildanordnung, insbesondere für Strukturteile von Gasturbinenanlagen, mit geschichtetem Aufbau |
DE19623300 | 1996-06-11 | ||
PCT/DE1997/001169 WO1997047925A1 (de) | 1996-06-11 | 1997-06-10 | Hitzeschildanordnung, insbesondere für strukturteile von gasturbinenanlagen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0904512A1 EP0904512A1 (de) | 1999-03-31 |
EP0904512B1 true EP0904512B1 (de) | 2002-08-21 |
Family
ID=7796651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97925907A Expired - Lifetime EP0904512B1 (de) | 1996-06-11 | 1997-06-10 | Hitzeschildanordnung, insbesondere für strukturteile von gasturbinenanlagen |
Country Status (8)
Country | Link |
---|---|
US (1) | US6085515A (de) |
EP (1) | EP0904512B1 (de) |
JP (1) | JP2000512370A (de) |
KR (1) | KR20000016569A (de) |
DE (2) | DE19623300A1 (de) |
RU (1) | RU2184319C2 (de) |
UA (1) | UA45455C2 (de) |
WO (1) | WO1997047925A1 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19750517A1 (de) * | 1997-11-14 | 1999-05-20 | Asea Brown Boveri | Hitzeschild |
DE19751299C2 (de) * | 1997-11-19 | 1999-09-09 | Siemens Ag | Brennkammer sowie Verfahren zur Dampfkühlung einer Brennkammer |
EP1006315B1 (de) * | 1998-11-30 | 2004-01-21 | ALSTOM (Switzerland) Ltd | Keramische Auskleidung für einen Brennraum |
EP1381811A1 (de) * | 2001-04-27 | 2004-01-21 | Siemens Aktiengesellschaft | Brennkammer, insbesondere einer gasturbine |
DE50111316D1 (de) * | 2001-08-28 | 2006-12-07 | Siemens Ag | Hitzeschildstein sowie Verwendung eines Hitzeschildsteins in einer Brennkammer |
EP1288578A1 (de) * | 2001-08-31 | 2003-03-05 | Siemens Aktiengesellschaft | Brennkammeranordnung |
EP1533572A1 (de) * | 2003-11-24 | 2005-05-25 | Siemens Aktiengesellschaft | Gasturbinenbrennkammer und Gasturbine |
US8771604B2 (en) * | 2007-02-06 | 2014-07-08 | Aerojet Rocketdyne Of De, Inc. | Gasifier liner |
US20100050640A1 (en) * | 2008-08-29 | 2010-03-04 | General Electric Company | Thermally compliant combustion cap device and system |
EP2230454A1 (de) * | 2009-03-18 | 2010-09-22 | Siemens Aktiengesellschaft | Vorrichtung zur Montage eines Hitzeschildelementes |
EP2261564A1 (de) * | 2009-06-09 | 2010-12-15 | Siemens Aktiengesellschaft | Hitzeschildelementanordnung mit Schraubeneinfädelmittel und Verfahren zur Montage eines Hitzeschildelementes |
DE102012022199A1 (de) * | 2012-11-13 | 2014-05-28 | Rolls-Royce Deutschland Ltd & Co Kg | Brennkammerschindel einer Gasturbine |
US9664389B2 (en) * | 2013-12-12 | 2017-05-30 | United Technologies Corporation | Attachment assembly for protective panel |
DE102014215034A1 (de) * | 2014-07-31 | 2016-02-04 | Siemens Aktiengesellschaft | Abdeckkappe für eine Durchgriffsbohrung in einem Hitzeschild und ein in der Durchgriffsbohrung positionierbares Fixierelement sowie Hitzeschild mit einer Abdeckkappe |
CA3008617A1 (en) | 2015-12-28 | 2017-07-06 | Lydall, Inc. | Heat shield with retention feature |
RU209216U1 (ru) * | 2021-08-30 | 2022-02-07 | Антон Владимирович Новиков | Теплозащитный экран для камеры сгорания газовой турбины |
RU209161U1 (ru) * | 2021-12-01 | 2022-02-03 | Антон Владимирович Новиков | Теплозащитный экран для камеры сгорания газовой турбины |
CN115930259A (zh) * | 2023-01-31 | 2023-04-07 | 上海电气燃气轮机有限公司 | 一种燃气轮机燃烧室的隔热瓦及热屏 |
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US3918255A (en) * | 1973-07-06 | 1975-11-11 | Westinghouse Electric Corp | Ceramic-lined combustion chamber and means for support of a liner with combustion air penetrations |
US4073318A (en) * | 1976-11-19 | 1978-02-14 | Minnesota Mining And Manufacturing Company | Process for wear-resistant ducts |
GB1568603A (en) * | 1977-01-15 | 1980-06-04 | Carborundum Co Ltd | Furnace linings |
US4379382A (en) * | 1980-06-02 | 1983-04-12 | Sauder Industries, Inc. | Method and apparatus for insulating a furnace having a corrosive atmosphere |
US4432289A (en) * | 1981-07-23 | 1984-02-21 | Deumite Norman | Furnace brick tie back assembly |
IT1171691B (it) * | 1983-07-12 | 1987-06-10 | Siti | Forno per la cottura di materiali ceramici, con elemento a volta comprendente mezzi resistenti alle sollecitazioni termiche e/o meccaniche |
US4748806A (en) * | 1985-07-03 | 1988-06-07 | United Technologies Corporation | Attachment means |
DE3664374D1 (en) * | 1985-12-02 | 1989-08-17 | Siemens Ag | Heat shield arrangement, especially for the structural components of a gas turbine plant |
DE3625056C2 (de) * | 1986-07-24 | 1997-05-28 | Siemens Ag | Feuerfeste Auskleidung, insbesondere für Brennkammern von Gasturbinenanlagen |
AU594814B2 (en) * | 1986-09-13 | 1990-03-15 | Foseco International Limited | Furnaces |
US4838031A (en) * | 1987-08-06 | 1989-06-13 | Avco Corporation | Internally cooled combustion chamber liner |
DE58908665D1 (de) * | 1988-06-13 | 1995-01-05 | Siemens Ag | Hitzeschildanordnung mit geringem kühlfluidbedarf. |
EP0377118B1 (de) * | 1988-12-03 | 1994-04-20 | Hoechst Aktiengesellschaft | Hochfeste Verbundkeramik, Verfahren zu ihrer Herstellung sowie ihre Verwendung |
JPH0762594B2 (ja) * | 1989-08-11 | 1995-07-05 | 日本碍子株式会社 | ファイバー炉 |
US5079912A (en) * | 1990-06-12 | 1992-01-14 | United Technologies Corporation | Convergent side disk cooling system for a two-dimensional nozzle |
DE4115403A1 (de) * | 1991-05-10 | 1992-11-12 | Mtu Muenchen Gmbh | Duesenwand |
US5129447A (en) * | 1991-05-20 | 1992-07-14 | United Technologies Corporation | Cooled bolting arrangement |
DE4117768C2 (de) * | 1991-05-31 | 1996-10-24 | Detlef Talg | Pelotte zum Stützen der menschlichen Wirbelsäule, insbesondere im Lendenbereich |
US5265411A (en) * | 1992-10-05 | 1993-11-30 | United Technologies Corporation | Attachment clip |
US5333443A (en) * | 1993-02-08 | 1994-08-02 | General Electric Company | Seal assembly |
FR2714152B1 (fr) * | 1993-12-22 | 1996-01-19 | Snecma | Dispositif de fixation d'une tuile de protection thermique dans une chambre de combustion. |
US5592814A (en) * | 1994-12-21 | 1997-01-14 | United Technologies Corporation | Attaching brittle composite structures in gas turbine engines for resiliently accommodating thermal expansion |
DE19502730A1 (de) * | 1995-01-28 | 1996-08-01 | Abb Management Ag | Keramische Auskleidung |
-
1996
- 1996-06-11 DE DE19623300A patent/DE19623300A1/de not_active Withdrawn
-
1997
- 1997-06-10 DE DE59708012T patent/DE59708012D1/de not_active Expired - Fee Related
- 1997-06-10 WO PCT/DE1997/001169 patent/WO1997047925A1/de not_active Application Discontinuation
- 1997-06-10 JP JP10501064A patent/JP2000512370A/ja not_active Ceased
- 1997-06-10 EP EP97925907A patent/EP0904512B1/de not_active Expired - Lifetime
- 1997-06-10 KR KR1019980710161A patent/KR20000016569A/ko not_active Application Discontinuation
- 1997-06-10 UA UA98126499A patent/UA45455C2/uk unknown
- 1997-06-10 RU RU99100095/06A patent/RU2184319C2/ru not_active IP Right Cessation
-
1998
- 1998-12-10 US US09/208,359 patent/US6085515A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
UA45455C2 (uk) | 2002-04-15 |
DE19623300A1 (de) | 1997-12-18 |
WO1997047925A1 (de) | 1997-12-18 |
RU2184319C2 (ru) | 2002-06-27 |
JP2000512370A (ja) | 2000-09-19 |
KR20000016569A (ko) | 2000-03-25 |
US6085515A (en) | 2000-07-11 |
EP0904512A1 (de) | 1999-03-31 |
DE59708012D1 (de) | 2002-09-26 |
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