EP1715249A1 - Elément de bouclier thermique et chambre de combustion avec un bouclier thermique - Google Patents
Elément de bouclier thermique et chambre de combustion avec un bouclier thermique Download PDFInfo
- Publication number
- EP1715249A1 EP1715249A1 EP05008520A EP05008520A EP1715249A1 EP 1715249 A1 EP1715249 A1 EP 1715249A1 EP 05008520 A EP05008520 A EP 05008520A EP 05008520 A EP05008520 A EP 05008520A EP 1715249 A1 EP1715249 A1 EP 1715249A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat shield
- shield element
- grooves
- combustion chamber
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 31
- 239000000919 ceramic Substances 0.000 claims description 6
- 241000826860 Trapezium Species 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- F23R3/007—Continuous combustion chambers using liquid or gaseous fuel constructed mainly of ceramic components
-
- 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 element for lining hot gas-carrying combustion chambers and to a combustion chamber, in particular for a gas turbine plant, with a combustion chamber wall lined with a heat shield
- the walls of hot gas-carrying combustors, such as gas turbine plants usually require a thermal shielding of their supporting structure against hot gas attack.
- the thermal shielding can be realized for example by a heat shield upstream of the actual combustion chamber wall.
- Such heat shields are usually constructed of a number of metallic or ceramic heat shield elements, with which the combustion chamber wall is lined surface. Ceramic materials are ideally suited for the construction of a heat shield in comparison to metallic materials because of their high temperature resistance, corrosion resistance and low thermal conductivity.
- Blocking air is blown through the gaps in the combustion chamber.
- the blocking air can simultaneously serve as cooling air for cooling the heat shield.
- further air inlets may be present in the combustion chamber, with which the blowing of a cooling air film over the surface of the heat shield elements can be realized.
- the object of the present invention is to provide an advantageous heat shield element for a heat shield.
- Another object of the present invention is to provide a combustion chamber with an advantageously designed heat shield.
- the first object is achieved by a heat shield element according to claim 1 and the second object by a combustion chamber according to claim 9.
- the dependent claims contain advantageous embodiments of the present invention.
- a heat shield element according to the invention for lining hot gas-carrying combustion chambers has a hot-side surface facing the hot gas and is characterized in that the hot-side surface is provided with recesses and / or protrusions.
- the sound-absorbing properties of the heat shield element can be improved.
- the heat shield element according to the invention is therefore particularly suitable for use in heat shields in which thede Kunststoffausblasung should be kept low.
- the recesses which are material recesses in the hot side surface of the heat shield element, to reduce stresses on impact of the hot gas to the hot side.
- the heat shield element according to the invention thus shows both an improved acoustic reflection behavior, as well as an improved behavior with respect to thermal stresses.
- the recesses may be formed as grooves, which may in particular extend net-like over the hot side surface of the heat shield element.
- the grooves forming the net intersect at right angles.
- the grooves extend in the direction from the hot side to the cold side of the heat shield element maximally to the middle of the heat shield element, i. the groove depth corresponds to a maximum of half the thickness of the heat shield element.
- the grooves to a to the inside have the heat shield element towards expanding groove cross-section.
- the grooves may have a trapezoidal groove cross-section, wherein the narrow side of the trapezoid forms the hot gas facing and open to this side of the grooves.
- heat shield elements are made of ceramic, they have due to the temperature resistance, corrosion resistance and low thermal conductivity of ceramic particularly favorable thermal properties.
- a combustion chamber according to the invention comprises a combustion chamber wall lined with a heat shield and is characterized in that the heat shield is constructed from a number of heat shield elements according to the invention.
- Such a combustion chamber is particularly suitable as a combustion chamber for a gas turbine plant.
- Fig. 1 shows a heat shield element according to the invention in a schematic representation.
- Fig. 2 shows a section of the heat shield element shown in Fig. 1 in section.
- FIG. 1 shows the schematic view of a heat shield element according to the invention in a perspective view.
- the heat shield element 1 according to the invention has a hot side 3 and a cold side 5.
- the hot side is the combustion chamber interior - and thus the hot gas - facing when the heat shield element is installed in a combustion chamber.
- the cold side 5, however, is the supporting structure of Facing combustion chamber wall.
- recesses in the form of grooves 9 are present, which extend in a net over the hot side surface 7.
- the grooves 9 extend at a distance from one another parallel to the side surfaces 2 and 4 of the heat shield element 1 which is rectangular in the present embodiment. They therefore form a network of grooves which intersect perpendicularly at their intersection points 10.
- the grooves 9 extend more than half of the material thickness of the heat shield element 1 ( Figure 2).
- the heat shield element according to the invention has an increased wall thickness.
- the groove cross section of the grooves 9 is designed trapezoidal, so that the groove extends from the groove opening 11 in the surface 7, starting in the direction of the interior of the heat shield element 1.
- the trapezoidal groove cross-section increases in particular the sound absorption of the heat shield element according to the invention.
- the existing in the hot side 3 of the heat shield element 1 grooves 9 also represent expansion joints.
- the hot side 3 undergoes a greater thermal expansion than the cooler cold side 5. Die Nuten then serve as expansion joints, which lead to a reduction of the thermally induced stresses in the hot side 3 during expansion.
- the heat shield element 1 is a ceramic heat shield element designed. However, it is also possible to produce the heat shield element according to the invention from metal.
- the heat shield element according to the invention can in particular be used to construct a heat shield for a gas turbine combustion chamber.
- a number of inventive heat shield elements under Spaltbemik so arranged on the combustion chamber wall that it largely covers the combustion chamber wall surface.
- the gaps between adjacent heat shield elements are dimensioned such that adjacent heat shield elements do not abut each other even with the strongest thermal expansion. As a result, contact-induced stresses within the heat shield elements can be reliably avoided.
- the gaps between adjacent heat shield elements can advantageously be blocked with a cooling fluid, for example air, against ingress of hot gas from the combustion chamber.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05008520A EP1715249A1 (fr) | 2005-04-19 | 2005-04-19 | Elément de bouclier thermique et chambre de combustion avec un bouclier thermique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05008520A EP1715249A1 (fr) | 2005-04-19 | 2005-04-19 | Elément de bouclier thermique et chambre de combustion avec un bouclier thermique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1715249A1 true EP1715249A1 (fr) | 2006-10-25 |
Family
ID=34935383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05008520A Withdrawn EP1715249A1 (fr) | 2005-04-19 | 2005-04-19 | Elément de bouclier thermique et chambre de combustion avec un bouclier thermique |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1715249A1 (fr) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2068082A1 (fr) * | 2007-12-04 | 2009-06-10 | Siemens Aktiengesellschaft | Composants de machines et turbine à gaz |
| WO2013135702A3 (fr) * | 2012-03-15 | 2013-11-14 | Siemens Aktiengesellschaft | Élément écran thermique pour une dérivation d'air de compresseur autour de la chambre de combustion |
| WO2014187659A1 (fr) * | 2013-05-21 | 2014-11-27 | Siemens Aktiengesellschaft | Carreau en faïence pour bouclier thermique de chambre de combustion |
| CN105531542A (zh) * | 2013-09-30 | 2016-04-27 | 西门子股份公司 | 用于燃气轮机的燃烧室的隔热屏和用于这种隔热屏的隔热石 |
| DE102016206188A1 (de) * | 2016-04-13 | 2017-10-19 | Rolls-Royce Deutschland Ltd & Co Kg | Brennkammerschindel einer Gasturbine |
| WO2020200568A1 (fr) * | 2019-04-03 | 2020-10-08 | Siemens Aktiengesellschaft | Carreau d'écran thermique à fonction d'amortissement |
| DE102019212039A1 (de) * | 2019-08-12 | 2021-02-18 | Rolls-Royce Deutschland Ltd & Co Kg | Brennkammerbaugruppe mit segmentierter Wandstruktur und Entlastungskanal im Bereich eines Segmentierungsschlitzes sowie Herstellungsverfahren |
| CN113339843A (zh) * | 2021-07-16 | 2021-09-03 | 西北工业大学 | 用于航空发动机燃烧室的多面体桁架式结构隔热屏及气膜形成的方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0419487B1 (fr) * | 1988-06-13 | 1994-11-23 | Siemens Aktiengesellschaft | Bouclier thermique n'exigeant que peu de fluide de refroidissement |
| EP1072573A1 (fr) * | 1999-07-30 | 2001-01-31 | Siemens Aktiengesellschaft | Procédé de fabrication d'une pièce réfractaire et brique céramique de chambre de combustion |
| DE19950417A1 (de) * | 1999-10-20 | 2001-04-26 | Abb Patent Gmbh | Turbinenbauteil |
| US20030140632A1 (en) * | 2000-01-18 | 2003-07-31 | Rolls-Royce Plc | Air impingement cooling system |
-
2005
- 2005-04-19 EP EP05008520A patent/EP1715249A1/fr not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0419487B1 (fr) * | 1988-06-13 | 1994-11-23 | Siemens Aktiengesellschaft | Bouclier thermique n'exigeant que peu de fluide de refroidissement |
| EP1072573A1 (fr) * | 1999-07-30 | 2001-01-31 | Siemens Aktiengesellschaft | Procédé de fabrication d'une pièce réfractaire et brique céramique de chambre de combustion |
| DE19950417A1 (de) * | 1999-10-20 | 2001-04-26 | Abb Patent Gmbh | Turbinenbauteil |
| US20030140632A1 (en) * | 2000-01-18 | 2003-07-31 | Rolls-Royce Plc | Air impingement cooling system |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2068082A1 (fr) * | 2007-12-04 | 2009-06-10 | Siemens Aktiengesellschaft | Composants de machines et turbine à gaz |
| WO2009071395A1 (fr) * | 2007-12-04 | 2009-06-11 | Siemens Aktiengesellschaft | Élément de machine et turbine à gaz |
| CN101889173B (zh) * | 2007-12-04 | 2015-05-13 | 西门子公司 | 机器部件和燃气轮机 |
| US9702561B2 (en) | 2007-12-04 | 2017-07-11 | Siemens Aktiengesellschaft | Machine component and gas turbine |
| WO2013135702A3 (fr) * | 2012-03-15 | 2013-11-14 | Siemens Aktiengesellschaft | Élément écran thermique pour une dérivation d'air de compresseur autour de la chambre de combustion |
| WO2014187659A1 (fr) * | 2013-05-21 | 2014-11-27 | Siemens Aktiengesellschaft | Carreau en faïence pour bouclier thermique de chambre de combustion |
| CN105324611A (zh) * | 2013-05-21 | 2016-02-10 | 西门子股份公司 | 用于燃烧室的隔热件的隔热瓦 |
| CN105531542A (zh) * | 2013-09-30 | 2016-04-27 | 西门子股份公司 | 用于燃气轮机的燃烧室的隔热屏和用于这种隔热屏的隔热石 |
| DE102016206188A1 (de) * | 2016-04-13 | 2017-10-19 | Rolls-Royce Deutschland Ltd & Co Kg | Brennkammerschindel einer Gasturbine |
| WO2020200568A1 (fr) * | 2019-04-03 | 2020-10-08 | Siemens Aktiengesellschaft | Carreau d'écran thermique à fonction d'amortissement |
| DE102019212039A1 (de) * | 2019-08-12 | 2021-02-18 | Rolls-Royce Deutschland Ltd & Co Kg | Brennkammerbaugruppe mit segmentierter Wandstruktur und Entlastungskanal im Bereich eines Segmentierungsschlitzes sowie Herstellungsverfahren |
| CN113339843A (zh) * | 2021-07-16 | 2021-09-03 | 西北工业大学 | 用于航空发动机燃烧室的多面体桁架式结构隔热屏及气膜形成的方法 |
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