CA2696994A1 - Burner for a turbo machine, baffle plate for such a burner and a turbo machine having such a burner - Google Patents
Burner for a turbo machine, baffle plate for such a burner and a turbo machine having such a burner Download PDFInfo
- Publication number
- CA2696994A1 CA2696994A1 CA2696994A CA2696994A CA2696994A1 CA 2696994 A1 CA2696994 A1 CA 2696994A1 CA 2696994 A CA2696994 A CA 2696994A CA 2696994 A CA2696994 A CA 2696994A CA 2696994 A1 CA2696994 A1 CA 2696994A1
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- Canada
- Prior art keywords
- baffle plate
- burner
- section
- mounting
- elevations
- 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.)
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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
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
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- 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
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/03042—Film cooled combustion chamber walls or domes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a burner for a turbomachine, comprising a guide plate that is arranged in a flame chamber and engages a wall section via spacers. The invention further relates to a guide plate, the fastening section of which comprises a plurality of raised areas for fastening to a wall section of a flame chamber. The invention further relates to a turbomachine having a burner of said kind.
Description
Burner for a Turbo Machine, Baffle plate for Such a Burner and a Turbo Machine Having Such a Burner The present invention relates to a burner for a turbo machine according to the preamble of Claim 1, a baffle plate for such a burner according to the preamble of Claim 3 and a turbo machine having such a burner according to Claim 11.
In a combustion process taking place in a flame chamber of a burner for turbo machines, radiant heat is formed, heating up in particular the chamber wall bordering the flame chamber. With thick walls and/or overlapping of material, this heating leads to high thermal stresses. The respective wall sections of the flame chamber are usually cooled by convection, in which outside air is guided over exterior surfaces of wall sections facing away from the flame chamber. To reduce the thermal stresses and to optimize convection cooling, the flame chambers are usually made of thin-walled sheet metal constructions such as flame tubes.
Changes in cross section or measures to guide the flow of a mixed fuel-air stream or an air stream, such as baffle plates or swirl generators are welded in place. The baffle plates may be designed as conical rings having a mounting section for welding to a wall section of the flame chamber and having a flow guide edge facing away from the mounting section.
After welding, the baffle plate with its mounting section is in contact with the wall section of the flame chamber over a large area, thus forming a large-area overlap of material, which promotes the development of thermal stresses. Since the overlap areas can be cooled on only one side, the thermal stresses cannot be adequately reduced.
The object of the present invention is to minimize the thermal stress associated with a burner for turbo machines while retaining the proven boundary conditions with regard to fluid mechanics and to create a turbo machine having such a burner.
This object is achieved by a burner having the features of Claim 1, by a baffle plate having the features of Claim 3 and by a turbo machine having the features of Claim 11.
An inventive burner for a turbo machine has a flame chamber, a swirl generator for applying a swirl to an air stream and a baffle plate arranged in the flame chamber for flow guidance of the air stream in the flame chamber. The baffle plate has a mounting section for mounting on a wall section of the flame chamber. According to the invention, the mounting section is connected to the wall section of the flame chamber by plurality of spacers.
The connection may traditionally be achieved by welding. The spacers first prevent an overlapping of material over a large area between the mounting section and the baffle plate and the wall section of the flame chamber. Secondly, a substream of air may flow between the mounting section of the baffle plate and the wall section of the flame chamber, resulting in cooling of both sides of these wall sections. In other words, the wall sections are cooled according to the invention on the interior surface facing the flame chamber as well as traditionally on their exterior surface facing away from the flame chamber. Likewise, welded joints for mounting the baffle plate are cooled on both sides.
The spacers may be separate components or may be, for example, elevations on the mounting section or on the wall section of the flame chamber, which are achieved by a corrugated shaping of the mounting section and/or the wall section.
The inventive baffle plate for a burner of a turbo machine has a flow guidance edge for guiding an air stream and a mounting section facing away from the flow guidance edge for mounting the baffle plate to a wall section of the burner. According to the invention, the mounting section has a plurality of elevations by which it can be attached to a wall section of a flame chamber of a burner.
In a preferred exemplary embodiment, the elevations each extend from a mounting edge of the mounting section to the flow guidance edge. This forms a plurality of channels between the elevations, extending essentially in the flow direction of the air stream.
This has the advantage that a substream of the injected air can flow between the mounting section of the baffle plate and the wall section of the flame chamber virtually without any change in direction.
The elevations preferably taper out in the direction of the flow guidance edge and develop into a planar flow guidance section. Retaining the planar flow guidance section with its linear flow guidance edge has the advantage that the proven flow-optimized boundary conditions remain unchanged.
The elevations may be designed like corrugations having a plurality of wave crests and wave troughs. The wave troughs serve as the channels for air guidance for convection cooling between the mounting section of the baffle plate and the wall section of the flame chamber.
In one exemplary embodiment, the elevations are designed like steps in the form of a square-wave curve.
The wave crests and wave troughs preferably each have a uniform geometry and are uniformly arranged on the mounting section. This allows uniform cooling to be achieved over the circumference of the baffle plate.
In a preferred exemplary embodiment, the baffle plate is a conical baffle plate ring made of a trapezoidal strip of material having one short longitudinal side and one long longitudinal side.
In a combustion process taking place in a flame chamber of a burner for turbo machines, radiant heat is formed, heating up in particular the chamber wall bordering the flame chamber. With thick walls and/or overlapping of material, this heating leads to high thermal stresses. The respective wall sections of the flame chamber are usually cooled by convection, in which outside air is guided over exterior surfaces of wall sections facing away from the flame chamber. To reduce the thermal stresses and to optimize convection cooling, the flame chambers are usually made of thin-walled sheet metal constructions such as flame tubes.
Changes in cross section or measures to guide the flow of a mixed fuel-air stream or an air stream, such as baffle plates or swirl generators are welded in place. The baffle plates may be designed as conical rings having a mounting section for welding to a wall section of the flame chamber and having a flow guide edge facing away from the mounting section.
After welding, the baffle plate with its mounting section is in contact with the wall section of the flame chamber over a large area, thus forming a large-area overlap of material, which promotes the development of thermal stresses. Since the overlap areas can be cooled on only one side, the thermal stresses cannot be adequately reduced.
The object of the present invention is to minimize the thermal stress associated with a burner for turbo machines while retaining the proven boundary conditions with regard to fluid mechanics and to create a turbo machine having such a burner.
This object is achieved by a burner having the features of Claim 1, by a baffle plate having the features of Claim 3 and by a turbo machine having the features of Claim 11.
An inventive burner for a turbo machine has a flame chamber, a swirl generator for applying a swirl to an air stream and a baffle plate arranged in the flame chamber for flow guidance of the air stream in the flame chamber. The baffle plate has a mounting section for mounting on a wall section of the flame chamber. According to the invention, the mounting section is connected to the wall section of the flame chamber by plurality of spacers.
The connection may traditionally be achieved by welding. The spacers first prevent an overlapping of material over a large area between the mounting section and the baffle plate and the wall section of the flame chamber. Secondly, a substream of air may flow between the mounting section of the baffle plate and the wall section of the flame chamber, resulting in cooling of both sides of these wall sections. In other words, the wall sections are cooled according to the invention on the interior surface facing the flame chamber as well as traditionally on their exterior surface facing away from the flame chamber. Likewise, welded joints for mounting the baffle plate are cooled on both sides.
The spacers may be separate components or may be, for example, elevations on the mounting section or on the wall section of the flame chamber, which are achieved by a corrugated shaping of the mounting section and/or the wall section.
The inventive baffle plate for a burner of a turbo machine has a flow guidance edge for guiding an air stream and a mounting section facing away from the flow guidance edge for mounting the baffle plate to a wall section of the burner. According to the invention, the mounting section has a plurality of elevations by which it can be attached to a wall section of a flame chamber of a burner.
In a preferred exemplary embodiment, the elevations each extend from a mounting edge of the mounting section to the flow guidance edge. This forms a plurality of channels between the elevations, extending essentially in the flow direction of the air stream.
This has the advantage that a substream of the injected air can flow between the mounting section of the baffle plate and the wall section of the flame chamber virtually without any change in direction.
The elevations preferably taper out in the direction of the flow guidance edge and develop into a planar flow guidance section. Retaining the planar flow guidance section with its linear flow guidance edge has the advantage that the proven flow-optimized boundary conditions remain unchanged.
The elevations may be designed like corrugations having a plurality of wave crests and wave troughs. The wave troughs serve as the channels for air guidance for convection cooling between the mounting section of the baffle plate and the wall section of the flame chamber.
In one exemplary embodiment, the elevations are designed like steps in the form of a square-wave curve.
The wave crests and wave troughs preferably each have a uniform geometry and are uniformly arranged on the mounting section. This allows uniform cooling to be achieved over the circumference of the baffle plate.
In a preferred exemplary embodiment, the baffle plate is a conical baffle plate ring made of a trapezoidal strip of material having one short longitudinal side and one long longitudinal side.
The flow guidance edge here is arranged on the short longitudinal side and the mounting edge is arranged on the long longitudinal side.
An inventive turbo machine has a burner with a baffle plate, which is spaced a distance away from wall sections of a flame chamber by means of spacers in some areas.
Favorable advantageous exemplary embodiments of the invention are the subject matter of additional dependent claims.
Preferred exemplary embodiments of the invention are explained in greater below on the basis of schematic diagrams, in which Fig. I shows a greatly simplified partial longitudinal section through a flame chamber of an inventive burner, Fig. 2 shows a first exemplary embodiment of an inventive baffle plate, Fig. 3 shows a second exemplary embodiment of an inventive baffle plate, Fig. 4 shows a third exemplary embodiment of an inventive baffle plate and Fig. 5 shows a fourth exemplary embodiment of an inventive baffle plate.
Fig. 1 shows a partial longitudinal section through an inventive burner 2 for a turbo machine in the area of its fuel and air injection. The burner 2 is embodied in a welded sheet metal design and has a flame chamber 4 bordered axially by a circular burner plate 6. Nozzles (not shown) are arranged in the burner plate 6 to inject a fuel 8 into the flame chamber 4. The flame chamber 4 opens conically starting from the burner plate 6 and is bordered essentially by a flame tube 10 radially.
A swirl generator 12 is provided between the burner plate 6 and the flame tube 10 for injecting air 14 and for applying a swirl to same. The swirl generator 12 extends around the flame chamber 4 radially and is oriented axially with the longitudinal axis 16 of the burner 2.
Because of the conical design of the flame chamber 4, the swirl generator 12 has an obliquely inclined inlet opening 18 for the air 14 into the flame chamber 4. A curved edge section 20 of the swirl generator 12 bordering the inlet opening 16 and located a distance away from the burner plate 6 is connected with a butt joint to a conical wall section 22 of the flame chamber 4.
The flame tube 10 is connected to the wall section 22 with a stepped end section 24, such that an annular space 26 [sic; 28] is formed between an edge area 26 of the wall section 22 spaced a distance away from the swirl generator 12 and the stepped end section 24 of the flame tube 10.
An inventive baffle plate 30, which is shaped to form a baffle plate ring, is situated in the connecting area of the swirl generator 12 to the wall section 22. The baffle plate ring 30 is designed with a conical shape and has a mounting section 32 and a flow guidance edge 34 facing away from the mounting section 32. The baffle plate ring 30 is arranged on an interior surface 36 of the wall section 22 via a mounting section 32, which is illustrated in greater detail in Fig. 2, such that the flow guidance edge 34 protrudes into the inlet opening 18 over the edge section 20 of the swirl generator 12. A plurality of channels (not shown) are formed between the wall section 22 and the mounting section 32 of the baffle plate ring 30 because of inventive elevations 48 of the mounting section 22 shown in the following Figs. 2 through 5. During operation of the burner 2, a substream of the air 14 injected through the inlet opening 18 of the swirl generator 12 flows through these channels, thereby cooling by convection the interior surface 36 of the wall section 22 section by section and thus reducing thermal stresses in the baffle plate ring 30 and the wall section 22.
Likewise, the mounting section 32 of the baffle plate 30 is cooled by the substream of air 14. Flow of the substream of air 14 into and through the channels is facilitated by a drop in pressure which is established in the channels.
According to Fig. 2, the conical sheet metal ring 30 is formed by a trapezoidal material strip 38. The material strip 38 has one short longitudinal side 40 and one long longitudinal side 42 opposite it. The two longitudinal sides 40, 42 are connected to one another by two narrow sides 44, 46 facing away from one another. The narrow sides 44, 46 are brought into connection for a butt joint to form the sheet metal ring 30.
The short longitudinal side 40 has the flow guidance edge 34, which is designed to be straight in the unshaped state of the material strip 38 according to the diagram in Fig. 2.
The mounting section 32 extends from the long longitudinal side 36 in the direction of the flow guidance edge 34. It has a plurality of elevations 48, which are corrugated in shape, thus forming a plurality of wave crests 50a, 50b, 50c, ... and wave troughs 52a, 52b, 53c, ....
When mounted in the flame chamber 4, the sheet metal ring 30 is attached to the interior surface 36 of the wall section 22 via the wave crests 50a, 50b, 50c, ... in at least some sections. The mounting is preferably accomplished by means of known welding techniques such as spot welding. The elevations 48 and/or the wave crests 50a, 50b, 50c, ... function more or less as spacers by means of which the mounting section 32 is spaced away from the wall section 22, so that overlapping of the material over an area is prevented. The wave crests 52a, 52b, 52c, ... here serve as the above-mentioned channels in Fig. 1 through which the substream of air 14 flows for convection cooling of both sides of wall section 22. Likewise, the welded joints for mounting the sheet metal ring 32 are also cooled by the inventive convection cooling taking place in the interior of the flame chamber 4 in the mounting area of the sheet metal ring 30.
An inventive turbo machine has a burner with a baffle plate, which is spaced a distance away from wall sections of a flame chamber by means of spacers in some areas.
Favorable advantageous exemplary embodiments of the invention are the subject matter of additional dependent claims.
Preferred exemplary embodiments of the invention are explained in greater below on the basis of schematic diagrams, in which Fig. I shows a greatly simplified partial longitudinal section through a flame chamber of an inventive burner, Fig. 2 shows a first exemplary embodiment of an inventive baffle plate, Fig. 3 shows a second exemplary embodiment of an inventive baffle plate, Fig. 4 shows a third exemplary embodiment of an inventive baffle plate and Fig. 5 shows a fourth exemplary embodiment of an inventive baffle plate.
Fig. 1 shows a partial longitudinal section through an inventive burner 2 for a turbo machine in the area of its fuel and air injection. The burner 2 is embodied in a welded sheet metal design and has a flame chamber 4 bordered axially by a circular burner plate 6. Nozzles (not shown) are arranged in the burner plate 6 to inject a fuel 8 into the flame chamber 4. The flame chamber 4 opens conically starting from the burner plate 6 and is bordered essentially by a flame tube 10 radially.
A swirl generator 12 is provided between the burner plate 6 and the flame tube 10 for injecting air 14 and for applying a swirl to same. The swirl generator 12 extends around the flame chamber 4 radially and is oriented axially with the longitudinal axis 16 of the burner 2.
Because of the conical design of the flame chamber 4, the swirl generator 12 has an obliquely inclined inlet opening 18 for the air 14 into the flame chamber 4. A curved edge section 20 of the swirl generator 12 bordering the inlet opening 16 and located a distance away from the burner plate 6 is connected with a butt joint to a conical wall section 22 of the flame chamber 4.
The flame tube 10 is connected to the wall section 22 with a stepped end section 24, such that an annular space 26 [sic; 28] is formed between an edge area 26 of the wall section 22 spaced a distance away from the swirl generator 12 and the stepped end section 24 of the flame tube 10.
An inventive baffle plate 30, which is shaped to form a baffle plate ring, is situated in the connecting area of the swirl generator 12 to the wall section 22. The baffle plate ring 30 is designed with a conical shape and has a mounting section 32 and a flow guidance edge 34 facing away from the mounting section 32. The baffle plate ring 30 is arranged on an interior surface 36 of the wall section 22 via a mounting section 32, which is illustrated in greater detail in Fig. 2, such that the flow guidance edge 34 protrudes into the inlet opening 18 over the edge section 20 of the swirl generator 12. A plurality of channels (not shown) are formed between the wall section 22 and the mounting section 32 of the baffle plate ring 30 because of inventive elevations 48 of the mounting section 22 shown in the following Figs. 2 through 5. During operation of the burner 2, a substream of the air 14 injected through the inlet opening 18 of the swirl generator 12 flows through these channels, thereby cooling by convection the interior surface 36 of the wall section 22 section by section and thus reducing thermal stresses in the baffle plate ring 30 and the wall section 22.
Likewise, the mounting section 32 of the baffle plate 30 is cooled by the substream of air 14. Flow of the substream of air 14 into and through the channels is facilitated by a drop in pressure which is established in the channels.
According to Fig. 2, the conical sheet metal ring 30 is formed by a trapezoidal material strip 38. The material strip 38 has one short longitudinal side 40 and one long longitudinal side 42 opposite it. The two longitudinal sides 40, 42 are connected to one another by two narrow sides 44, 46 facing away from one another. The narrow sides 44, 46 are brought into connection for a butt joint to form the sheet metal ring 30.
The short longitudinal side 40 has the flow guidance edge 34, which is designed to be straight in the unshaped state of the material strip 38 according to the diagram in Fig. 2.
The mounting section 32 extends from the long longitudinal side 36 in the direction of the flow guidance edge 34. It has a plurality of elevations 48, which are corrugated in shape, thus forming a plurality of wave crests 50a, 50b, 50c, ... and wave troughs 52a, 52b, 53c, ....
When mounted in the flame chamber 4, the sheet metal ring 30 is attached to the interior surface 36 of the wall section 22 via the wave crests 50a, 50b, 50c, ... in at least some sections. The mounting is preferably accomplished by means of known welding techniques such as spot welding. The elevations 48 and/or the wave crests 50a, 50b, 50c, ... function more or less as spacers by means of which the mounting section 32 is spaced away from the wall section 22, so that overlapping of the material over an area is prevented. The wave crests 52a, 52b, 52c, ... here serve as the above-mentioned channels in Fig. 1 through which the substream of air 14 flows for convection cooling of both sides of wall section 22. Likewise, the welded joints for mounting the sheet metal ring 32 are also cooled by the inventive convection cooling taking place in the interior of the flame chamber 4 in the mounting area of the sheet metal ring 30.
The elevations 48 extend from a mounting edge 54 formed by the long longitudinal side 42 in the direction of the flow guidance edge 34 and develop into a plane or flow guidance section 56 which is adjacent to the mounting section 32. The wave crests 50a, 50b, 50c, ... run radially outward in the direction of flow through this extent. The wave crests 50a, 50b, 50c, ... and the wave troughs 52a, 52b, 52c, ... each have the same geometry and are distributed uniformly over the mounting section 32 so that they run symmetrically on both sides of the mounting section 32.
The wave form of the mounting section 32 is responsible for a certain elasticity of the baffle plate ring 30, so that in addition to improved cooling, the thermal stresses are better compensated and/or minimized. The uniformity of the wave form described above results in the thermal stresses being uniformly dissipated over the circumference of the baffle plate 30 and no new stresses being introduced into the baffle plate ring 32.
Figs. 3, 4 and 5 each show another exemplary embodiment of an inventive baffle plate 58, 60, 62. The essential difference between these baffle plates 58, 60, 62 and the baffle plate 30 illustrated in Fig. 2 consists of the fact that the number of elevations 48 and thus the frequency of the wave form of the mounting section 32 are higher in Fig. 5 in comparison with Fig. 2. A detailed description of baffle plates 58, 60, 62 shown in Figs.
3, 4 and 5 may thus be omitted.
It should be pointed out that it is also conceivable for the elevations 48 to be arranged on the mounting section 32 with different geometries and/or uniformly around the circumference of the baffle plate ring 30, in such a way that the convection cooling is executed with differing intensities over the circumference of the wall section 22. A stepped design in the form of a square-wave curve or a sawtooth curve can be mentioned as an example of a different geometric arrangement. In addition, it is conceivable for the channels to widen in a funnel shape in the direction of the mounting edge, so that an intensified nozzle effect occurs for continuous flow of the substream of air 14 in the channels. It is likewise conceivable for the elevations to be designed on wall section 22 and for the mounting section 32 of the baffle plate ring 30 to be planar. Furthermore it is conceivable for the elevations 48 to be replaced by external spacers or those designed separately, arranged between the wall section 22 and a mounting section. Furthermore it should be pointed out that any shapes of a baffle plate 30 are conceivable, and the present patent application is not limited to a ring shape.
A burner for a turbo machine having a baffle plate arranged in a flame chamber is disclosed, said baffle plate acting on a wall section via a spacer, a baffle plate whose mounting section comprises a plurality of elevations for attachment to a wall section of a flame chamber as well as a turbo machine having such a burner.
The wave form of the mounting section 32 is responsible for a certain elasticity of the baffle plate ring 30, so that in addition to improved cooling, the thermal stresses are better compensated and/or minimized. The uniformity of the wave form described above results in the thermal stresses being uniformly dissipated over the circumference of the baffle plate 30 and no new stresses being introduced into the baffle plate ring 32.
Figs. 3, 4 and 5 each show another exemplary embodiment of an inventive baffle plate 58, 60, 62. The essential difference between these baffle plates 58, 60, 62 and the baffle plate 30 illustrated in Fig. 2 consists of the fact that the number of elevations 48 and thus the frequency of the wave form of the mounting section 32 are higher in Fig. 5 in comparison with Fig. 2. A detailed description of baffle plates 58, 60, 62 shown in Figs.
3, 4 and 5 may thus be omitted.
It should be pointed out that it is also conceivable for the elevations 48 to be arranged on the mounting section 32 with different geometries and/or uniformly around the circumference of the baffle plate ring 30, in such a way that the convection cooling is executed with differing intensities over the circumference of the wall section 22. A stepped design in the form of a square-wave curve or a sawtooth curve can be mentioned as an example of a different geometric arrangement. In addition, it is conceivable for the channels to widen in a funnel shape in the direction of the mounting edge, so that an intensified nozzle effect occurs for continuous flow of the substream of air 14 in the channels. It is likewise conceivable for the elevations to be designed on wall section 22 and for the mounting section 32 of the baffle plate ring 30 to be planar. Furthermore it is conceivable for the elevations 48 to be replaced by external spacers or those designed separately, arranged between the wall section 22 and a mounting section. Furthermore it should be pointed out that any shapes of a baffle plate 30 are conceivable, and the present patent application is not limited to a ring shape.
A burner for a turbo machine having a baffle plate arranged in a flame chamber is disclosed, said baffle plate acting on a wall section via a spacer, a baffle plate whose mounting section comprises a plurality of elevations for attachment to a wall section of a flame chamber as well as a turbo machine having such a burner.
List of reference numerals 2 Burner 4 Flame chamber 6 Burner plate 8 Fuel Flame tube 12 Swirl generator 14 Air 16 Longitudinal axis 10 18 Inlet opening Edge section 22 Wall section 24 End section 26 Edge area 15 28 Annular space Baffle plate and/or baffle plate ring 32 Mounting section 34 Flow guidance edge 36 Internal surface section 20 38 Material strip Short longitudinal side 42 Long longitudinal side 44 Narrow side 46 Narrow side 25 48 Elevations 50a, 50b, 50c, ... Wave crest 52a, 52b, 52c, ... Wave trough 54 Mounting edge 56 Flow guidance section 30 58 Baffle plate 60 Baffle plate 62 Baffle plate
Claims (11)
1. A burner for a turbo machine having a flame chamber (4), a swirl generator (12) for applying a swirl to an air stream and having a baffle plate (30; 58; 60; 62) for guidance of the air stream in the flame chamber (4), characterized in that the baffle plate (30; 58; 60; 62) is mounted on a wall section (22) of the flame chamber (4) with its mounting section (32) via plurality of spacers.
2. The burner according to Claim 1, wherein the spacers are elevations (48) in the mounting section (32) of the baffle plate (30; 58; 60; 62) or in the wall section (22) of the flame chamber (4).
3. A baffle plate for a burner according to Claim 1 or 2, having a flow guidance edge (34) for guidance of an air stream and having a mounting section (32) facing away from the flow guidance edge (34) for mounting the baffle plate (30; 58; 60;
62) on a wall section (22) of a flame chamber (4) of the burner (2), characterized in that the mounting section (32) for mounting the baffle plate (30; 58; 60; 62) to the wall section (22) has a plurality of elevations (48).
62) on a wall section (22) of a flame chamber (4) of the burner (2), characterized in that the mounting section (32) for mounting the baffle plate (30; 58; 60; 62) to the wall section (22) has a plurality of elevations (48).
4. The baffle plate according to Claim 3, wherein the elevations (48) extend from a mounting edge (54) in the direction of the flow guidance edge (34).
5. The baffle plate according to Claim 4, wherein the elevations (48) taper out in the direction of the flow guidance edge (34) and develop into a planar flow guidance section (56).
6. The baffle plate according to Claims 3, 4 or 5, wherein the elevations (48) are designed like corrugations with wave crests (50a, 50b, 50c, ...) and wave troughs (52a, 52b, 53c, ...).
7. The baffle plate according to any one of Claims 3 to 6, wherein the wave crests (50a, 50b, 50c, ...) and wave troughs (52a, 52b, 52c, ...) each have a uniform geometry and are arranged uniformly on the mounting section (32).
8. The baffle plate according to Claim 5, wherein the elevations (48) are designed like steps in the form of a square-wave curve.
9. The baffle plate according to any one of Claims 3 to 8, wherein the baffle plate (30;
58; 60; 62) is a trapezoidal material strip (38) having one short longitudinal side (40) and one long longitudinal side (42) which forms a conical baffle plate ring in the deformed state.
58; 60; 62) is a trapezoidal material strip (38) having one short longitudinal side (40) and one long longitudinal side (42) which forms a conical baffle plate ring in the deformed state.
10. The baffle plate according to Claim 9, wherein the flow guidance edge (34) is arranged on the short longitudinal side (40), and the mounting edge (54) is arranged on the long longitudinal side (42).
11. A turbo machine having a burner according to Claim 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007050664.5 | 2007-10-24 | ||
| DE102007050664A DE102007050664A1 (en) | 2007-10-24 | 2007-10-24 | Burner for a turbomachine, baffle for such a burner and a turbomachine with such a burner |
| PCT/EP2008/008936 WO2009053049A1 (en) | 2007-10-24 | 2008-10-22 | Burner for a turbomachine, guide plate for a burner of said kind and turbomachine having burner of said kind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2696994A1 true CA2696994A1 (en) | 2009-04-30 |
Family
ID=40405029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2696994A Abandoned CA2696994A1 (en) | 2007-10-24 | 2008-10-22 | Burner for a turbo machine, baffle plate for such a burner and a turbo machine having such a burner |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100205969A1 (en) |
| EP (1) | EP2201300B1 (en) |
| JP (1) | JP5324588B2 (en) |
| CA (1) | CA2696994A1 (en) |
| DE (1) | DE102007050664A1 (en) |
| WO (1) | WO2009053049A1 (en) |
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| US2625792A (en) * | 1947-09-10 | 1953-01-20 | Rolls Royce | Flame tube having telescoping walls with fluted ends to admit air |
| US2544538A (en) * | 1948-12-01 | 1951-03-06 | Wright Aeronautical Corp | Liner for hot gas chambers |
| DE825777C (en) * | 1949-08-19 | 1951-12-20 | Canadian Patents Dev | Flame tube of combustion chambers, especially for gas turbines |
| US3064425A (en) * | 1959-10-05 | 1962-11-20 | Gen Motors Corp | Combustion liner |
| US3572031A (en) * | 1969-07-11 | 1971-03-23 | United Aircraft Corp | Variable area cooling passages for gas turbine burners |
| US3752225A (en) * | 1970-06-02 | 1973-08-14 | Gen Motors Corp | Duct for hot gas |
| US3751910A (en) * | 1972-02-25 | 1973-08-14 | Gen Motors Corp | Combustion liner |
| US3854285A (en) * | 1973-02-26 | 1974-12-17 | Gen Electric | Combustor dome assembly |
| GB1550368A (en) * | 1975-07-16 | 1979-08-15 | Rolls Royce | Laminated materials |
| JPS5556521A (en) * | 1978-10-23 | 1980-04-25 | Hitachi Ltd | Combustion device |
| GB2204672B (en) * | 1987-05-06 | 1991-03-06 | Rolls Royce Plc | Combustor |
| DE4223733C2 (en) * | 1992-07-18 | 1995-05-18 | Gutehoffnungshuette Man | Connection of mixing tube and flame tube of a gas turbine |
| US5704208A (en) * | 1995-12-05 | 1998-01-06 | Brewer; Keith S. | Serviceable liner for gas turbine engine |
| GB9623615D0 (en) * | 1996-11-13 | 1997-07-09 | Rolls Royce Plc | Jet pipe liner |
| US6199371B1 (en) * | 1998-10-15 | 2001-03-13 | United Technologies Corporation | Thermally compliant liner |
| EP1221574B2 (en) * | 2001-01-09 | 2017-12-20 | Mitsubishi Heavy Industries, Ltd. | Gas turbine combustor |
| JP3924136B2 (en) * | 2001-06-27 | 2007-06-06 | 三菱重工業株式会社 | Gas turbine combustor |
| US7631481B2 (en) * | 2004-12-01 | 2009-12-15 | United Technologies Corporation | Cooled duct for gas turbine engine |
-
2007
- 2007-10-24 DE DE102007050664A patent/DE102007050664A1/en not_active Withdrawn
-
2008
- 2008-10-22 EP EP08842721.6A patent/EP2201300B1/en active Active
- 2008-10-22 WO PCT/EP2008/008936 patent/WO2009053049A1/en active Application Filing
- 2008-10-22 US US12/678,323 patent/US20100205969A1/en not_active Abandoned
- 2008-10-22 JP JP2010530336A patent/JP5324588B2/en not_active Expired - Fee Related
- 2008-10-22 CA CA2696994A patent/CA2696994A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009053049A1 (en) | 2009-04-30 |
| EP2201300A1 (en) | 2010-06-30 |
| JP2011501098A (en) | 2011-01-06 |
| EP2201300B1 (en) | 2015-06-03 |
| JP5324588B2 (en) | 2013-10-23 |
| DE102007050664A1 (en) | 2009-04-30 |
| US20100205969A1 (en) | 2010-08-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20131022 |