WO2012004131A1 - Appareil de combustion et moteur à turbine à gaz - Google Patents

Appareil de combustion et moteur à turbine à gaz Download PDF

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Publication number
WO2012004131A1
WO2012004131A1 PCT/EP2011/060492 EP2011060492W WO2012004131A1 WO 2012004131 A1 WO2012004131 A1 WO 2012004131A1 EP 2011060492 W EP2011060492 W EP 2011060492W WO 2012004131 A1 WO2012004131 A1 WO 2012004131A1
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WO
WIPO (PCT)
Prior art keywords
chamber
cavity
wall
combustion
coolant
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.)
Ceased
Application number
PCT/EP2011/060492
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English (en)
Inventor
Victoria Sanderson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to CN201180033349XA priority Critical patent/CN102959333A/zh
Priority to RU2013104536/06A priority patent/RU2013104536A/ru
Priority to EP11728817A priority patent/EP2553341A1/fr
Priority to US13/808,104 priority patent/US20140144143A1/en
Publication of WO2012004131A1 publication Critical patent/WO2012004131A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
    • 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
    • F23R3/005—Combined with pressure or heat exchangers

Definitions

  • a combustion apparatus and gas turbine engine The present invention relates to a combustion apparatus. More particularly the present invention relates to a cooling system of a combustion apparatus. Furthermore, the present in ⁇ vention relates to a gas turbine engine using a combustion apparatus .
  • the combustion chamber exhibits a first wall and a second wall spaced to each other building a cavity.
  • the first wall which is the outer skin of the combustion chamber exhibits holes so that a coolant can enter the cavity between the first and the second wall of the combustion chamber.
  • the second wall of the com- bustion chamber which is the inner layer, also exhibits openings, in particular perforations or a series of small holes, so that the coolant can enter from the cavity into the combustion chamber cooling the inner layer of the combustion chamber.
  • the perforations or small holes in the inner layer are smaller than those on the outer skin and provide for cooling and acoustic damping.
  • a combustion apparatus with a double skin arrangement is known from EP 0 896 193 A2.
  • the combustion-chamber and the pre-chamber exhibits a first wall and a second wall spaced to each other building a cavity. In the first wall are openings for introducing coolant into the cavity.
  • From WO 2008/028621 Al is also such a combustion apparatus known.
  • a channel for guiding air to a swirler is disclosed in US 2009/0120094 A. Within the channel a double skin arrangement around the com ⁇ bustion-chamber is provided.
  • EP 0 725 253 A2 discloses a com ⁇ bustion apparatus with a double skin arrangement, as well.
  • An object of the present invention is to improve the cooling of a combustion apparatus.
  • a further object of the present invention is to reduce the NOx emissions of a combustion ap ⁇ paratus.
  • a combustion apparatus which comprises a combustion chamber in which combustion of a fuel/oxidant mix takes place, a pre-chamber which is located upstream of the combus ⁇ tion chamber, a first device for mixing a fuel with an oxidant, the first device located upstream of the pre-chamber.
  • the combustion chamber and the pre-chamber of the combustion apparatus comprise a common first wall and a common second wall spaced to each other building a cavity. Further the first wall exhibits at least one first opening in the area of the combustion chamber for introducing a coolant into the cavity.
  • the combustion apparatus comprises a channel for feeding the oxidant to the first device, whereby the channel is formed by a housing element of the combustion apparatus and the common first wall of the combustion chamber and the pre-chamber.
  • the at least one first opening is located in the area of the combustion chamber.
  • the first wall exhibits at least one second opening for introducing the coolant into the cavity, wherein the at least one second opening is located in the area of the pre-chamber.
  • the term upstream means the direc ⁇ tion from the combustion chamber towards the pre-chamber.
  • the first wall is the outer wall, which faces the outer casing of the combustion apparatus.
  • a second wall is the inner wall, which faces the center of the combustion apparatus and which therefore faces the combustion flame.
  • the at least one first opening can be realized by holes in the first wall in the ar ⁇ ea of the combustion chamber.
  • the cavity is a con- tinuous cavity which extends from the area of the pre-chamber to the area of the combustion chamber.
  • the term common can also have the meaning of one of the following terms: combined, joint or corporate. Due to the common first wall and common second wall of the pre-chamber and the combustion chamber coolant introduced through the at least one first opening into the cavity can also be supplied to the pre-chamber. Therefore, the pre- chamber of the combustion apparatus is also cooled.
  • the at least one first opening is located in the area of the combustion cham ⁇ ber. Therefore, a part of the coolant, in particular air, can be introduced into the cavity from the first opening.
  • the first wall exhibits at least one second opening which is adapted for introducing the coolant, in particular a second part of the coolant, into the cavity, as well, wherein the at least one second opening is located in the area of the pre-chamber .
  • the combustion apparatus comprises a first device for mixing a fuel with an oxidant, the first device located upstream of the pre-chamber.
  • the first device is constructed in such a way that the fuel/oxidant-mixture is introduced from the first device into the pre-chamber.
  • the at least one first opening and at least one second open ⁇ ing in the first wall can be realized by a softwall or by at least one dilution hole or by a perforation of the first wall. Due to the provision of the at least one second opening in the first wall in the area of the pre-chamber an addi ⁇ tional cooling of the pre-chamber can be provided.
  • the channel of the combustion apparatus serves for feeding the oxidant to the first device.
  • the channel is formed by a housing element of the combustion apparatus and the common first wall of the combustion chamber and the pre-chamber. That means the channel is arranged separate to the cavity.
  • the advantage of the extra channel is that the oxidant can flow constant and undisturbed through the channel to the first device.
  • One advantage of such a combustion apparatus is that both a constant and undisturbed supply of oxidant to the first de ⁇ vice and an effective cooling of the common second wall of the pre-chamber and the combustion chamber are guaranteed.
  • the introduction of coolant, in particular oxidant, through the at least one second opening into the cavity enables that the coolant flows from the upstream end to the downstream end of the cavity and therefore enables an effective heat removal through the cavity.
  • the specific arrangement of the cavity enables additionally to the cooling of the common second wall in the area of the combustion-chamber a cooling of the common second wall in the area of the pre-chamber.
  • the lifetime of the combustion apparatus can be increased by the better cool ⁇ ing of the common second wall.
  • the arrangement of the channel and the cavity around the pre-chamber and the combustion- chamber ensures a perfect feeding of oxidant to the first de- vice of the combustion apparatus and a good cooling of the common second wall which is covering the pre-chamber and the combustion-chamber.
  • the heated coolant can be deduced.
  • the double common wall has the advantage that the oxidant which is guided through the chan- nel to the first device is not heated up very strong in di ⁇ rection to the first device.
  • the part of the cool- ant/oxidant which enters the cavity is cool enough to provide an effective cooling of the common second wall.
  • the common first wall and the common second wall have the same shape.
  • the common first wall has a larger diameter than the common second wall.
  • the distance between the common first wall and the common second wall can be the same over the entire length of the cavity defined by both walls.
  • the common first and the common second wall can be arranged parallel to each other. This enables a uniform flow of coolant through the cavity and saves instal ⁇ lation space.
  • the total combustion apparatus can be kept to a minimum.
  • the coolant is the oxidant flowing through the channel and being introduced through the at least one first opening and the at least one second opening into the cavity.
  • the coolant which is introduced into the cavity is not the oxidant which is guided through the channel to the first device of the combustion apparatuses.
  • the second wall can exhibit at least one third opening adapted for outputting the coolant from the cavity to the combustion chamber and/or the pre-chamber.
  • the first device can be arranged in such a way that the coolant can be intro ⁇ quizd from the cavity into the first device, wherein the first device is adapted for receiving the coolant from the cavity .
  • the coolant By introducing the coolant into the first device the coolant is supplied to the pre-chamber and to the combustion chamber by the first device. Therefore, an effective cooling of the pre-chamber and the combustion chamber can be achieved. More particularly, an effective cooling of the inner face of the second wall along the pre-chamber and the combustion chamber is achieved.
  • a second de ⁇ vice can be provided between the first device and the cavity, wherein the second device is adapted for outputting the cool- ant to the first device and/or the pre-chamber.
  • the second device can also be located in the cav ⁇ ity, the second device being adapted for outputting the cool ⁇ ant to the first device and/or the pre-chamber.
  • the coolant through the second device By introducing the coolant through the second device into the first device an optimized provision of the coolant to the first device can be realized.
  • This coolant then is supplied to the pre-chamber and to the combustion chamber by the first device cooling the pre-chamber and the combustion chamber.
  • the second device outputs the coolant directly into the pre-chamber.
  • an optimized cooling of the pre-chamber can be realized. More particularly, en effective cooling of the inner face of the second wall along the pre-chamber and the combustion chamber is achieved.
  • the output of the coolant through the second device is so chosen that it matches the flow in ⁇ quizd from the first device. This avoids any potential shear layers which may result in flash backs.
  • the second device can output the coolant radially or axially into the pre- chamber or can output the coolant axially into the first de ⁇ vice .
  • the term radially means the direction towards a cen- ter axis of the combustion apparatus and the term axially means a direction parallel to the center axis of the combus ⁇ tion apparatus.
  • the second device therefore can be adapted to create a film that directs the flow along the pre-chamber wall. This coolant film is also realized by coolant outputted by third openings in the second wall.
  • the second device can comprise a swirler, in particular a radial swirler or an axial swirler.
  • the first device and the second device can be formed integrally, i.e. in one piece.
  • integrally forming the first device and the second device the combined device can be realized in a compact form. More ⁇ over, the production of an integrally formed first and second device eases the production and the matching of the flows from the first device and the second device can be easily achieved.
  • the first device can comprise a swirler. If the coolant, in particular air, is been exiting into the main swirler then an axial type swirler can be used, if the coolant, in particular air, is been exit ⁇ ing into the pre-chamber a radial type swirler can be used.
  • the swirler creates a swirling mix of the fuel and the oxi ⁇ dant, which travels along the pre-chamber to the combustion chamber.
  • the swirler can be a radial swirler, i.e. the oxidant and/or the fuel/oxidant mix is outputted in a radial di ⁇ rection into the pre-chamber.
  • the present invention is not limited to a first device comprising a radial swirler.
  • the first device can also comprise an axial swirler output- ting the oxidant and/or the fuel/oxidant mix in an axial di ⁇ rection into the pre-chamber.
  • the coolant can be an oxidant, in particular air.
  • a separation element is placed in the cavity dividing the cavity into a first cavity and a second cavity, the first cavity is formed by the first common wall and the separation element and the second cavity is formed by the separation element and the se ⁇ cond common wall, wherein at the upstream side of the first cavity and the second cavity the cavities are connected with each other by a coolant communicating pathway, wherein the at least one first opening is arranged at the downstream end of the first cavity and wherein a fourth opening is arranged at the downstream end of the second cavity or vice versa.
  • the upstream side of the first cavity and the second cavity is the side which is arranged around the pre-chamber.
  • a coolant can be introduced at the down ⁇ stream end of the cavities into the second cavity.
  • the coolant can flow through the first cavity, through the cool ⁇ ant communicating pathway into the second cavity and from there the heated up coolant can be deduced.
  • Introducing oxi ⁇ dant through the second openings into the cavity enables a faster flow of the heated up coolant through the second cav- ity.
  • Such a combustion apparatus ensures a very effective cooling of the common second wall of the pre-chamber and the combustion-chamber .
  • the present invention discloses a gas turbine engine, which comprises at least one of the above described combustion apparatuses.
  • Figure 1 is a schematic cross-sectional side view of a com- bustion apparatus according to the prior art
  • Figure 2 is a schematic cross-sectional side view of a com ⁇ bustion apparatus according to the present invention.
  • Figure 3 is a schematic cross-sectional side view of a fur ⁇ ther combustion apparatus according to the present invention .
  • Figure 1 of the present invention shows a schematic cross- sectional side view of a combustion apparatus according to the prior art.
  • the combustion apparatus shown in Figure 1 comprises a combustion chamber 12, a pre-chamber 14 located upstream of the combustion chamber 12, a first device 10 for mixing a fuel with an oxidant, wherein the first device 10 is located upstream of the pre-chamber 14.
  • the combustion apparatus according to the prior art also comprises a back plate 50 and an outer casing.
  • the combustion chamber 12 exhibits a first wall 20 and a second wall 30, wherein the first wall 20 is spaced to the second wall 30. Therefore, the first wall 20 and the second wall 30 build a cavity 40.
  • the first wall 20 exhibits a first opening for introducing a coolant into the cavity 40. Furthermore, the second wall 30 exhibits at least one opening 21 for outputting the coolant from the cavity 40 into the combustion chamber 12. Thereby, a cooling of the combustion chamber 12 is achieved.
  • An oxidant such as e.g. air, is supplied by a not shown com pressor to the first device 10.
  • the flow direction of the ox idant is indicated by dotted arrows shown in the upper part of Figure 1.
  • the first device 10 is adapted for mixing a fuel, which can be supplied by fuel galleries through the back plate 50, with the oxidant supplied by the not shown compressor.
  • the first device 10 outputs the oxidant or the fuel/oxidant mix into the pre-chamber 14.
  • the combustion apparatus exhibits a cylindrical geometry so that the first device 10 outputs the oxidant or the fuel/oxidant mix towards the center axis of the combus ⁇ tion apparatus and the first device 10 respectively.
  • the flow structure having a central recirculation extends from the pre- chamber 14 into the combustion chamber 12.
  • the flow structure having the central recirculation is indicated by the dotted arrows extending from the pre-chamber 14 into the combustion chamber 12.
  • the recirculation is an aerodynamic feature of highly swirling flow.
  • the recirculating flow is generally hot combustion products and it is this which heats the pre- chamber and incoming fluids.
  • the not combusted oxidant and/or fuel/oxidant mix interacts with the wall of the pre- chamber 14 and therefore heats the pre-chamber 14.
  • FIG. 2 of the present invention shows a schematic cross- sectional side view of a combustion apparatus 100 according to the present invention.
  • the combustion apparatus 100 shown in Figure 2 comprises a combustion chamber 12 in which combustion of a fuel/oxidant mix takes place, and a pre- chamber 14 located upstream of the combustion chamber 12.
  • the combustion chamber 12 and the pre-chamber 14 comprise a common first wall 20 and a common second wall 30, wherein the first wall 20 and the second wall 30 are spaced to each oth ⁇ er, so that they build a cavity 40.
  • the cavity 40 therefore extends from the combustion chamber 12 to the pre-chamber 14.
  • the first wall 20 of the combustion apparatus 100 exhibits at least one first opening 21 which is adapted for introducing a coolant into the cavity 40.
  • the common first wall 20 of the combustion chamber 12 and the pre-chamber 14 is the outer skin or the outer wall of the combustion chamber 12 and the pre-chamber 14.
  • the common second wall 30 of the combustion chamber 12 and the pre- chamber 14 is the inner skin of the combustion chamber 12 and the pre-chamber 14 facing the center of the combustion appa- ratus 100 and therefore facing the center of the combustion chamber 12 and the pre-chamber 14.
  • the at least one first opening 21 in the first wall 20 can e.g. be realized by a soft wall, a dilution hole or simply by a perforation of the first wall.
  • the position of the first opening 21 in the first wall 20 is completely variable.
  • the first opening 21 in the first wall 20 can be located in the area of the combustion chamber 12, as shown in Figure 2.
  • the present invention is not limited to this arrangement.
  • the first opening 21 of the first wall 20 can also be located in the area of the pre-chamber 14.
  • the at least one first open- ing 21 in the first wall 20 is located in the area of the combustion chamber 12. But this is not a limitation of the present invention.
  • the at least one first opening 21 can of course also be a plurality of first openings 21, which can be arranged in the first wall 20. This arrangement of the plu- rality of first openings 21 in the first wall 20 can be adapted by the person skilled in the art as required.
  • the first wall 20 additionally exhibits at least one second opening 22.
  • the at least one second opening 22 is also adapted for intro ⁇ ducing the coolant into the cavity 40.
  • the at least one second opening 22 is located in the area of the pre-chamber 40. Nev- ertheless, the present invention is not limited to this ar ⁇ rangement.
  • the at least one second opening 22 in the first wall 20 can also be located in another area of the double skin arrangement of the combustion chamber 12 and the pre- chamber 14.
  • coolant introduced through the second opening 22 is directly coupled into the cavity 40 in the area of the pre-chamber 14. Therefore, a more effective cooling of the pre-chamber 14 is realized.
  • Figure 2 of the present invention it is indicated by the dotted arrows in the area of the pre-chamber 14 directing into the direction of the center axis of the combustion appara ⁇ tus 100 that the at least one second opening 22 is realized by three second openings 22 in the first wall 20.
  • the present invention is not limited to this arrange ⁇ ment. Any arbitrary number of second openings 22 in the first wall 20, which applies useful for the person skilled in the art to reach an optimized cooling of the pre-chamber 14 and the combustion chamber 12, is possible.
  • the at least one second opening 22 in the first wall 20 can be realized e.g. by a softwall or by at least one dilution hole or simply by a perforation of the common first wall 20 of the combustion chamber 12 and the pre-chamber 14.
  • the oxidant which can be the coolant, is guided through a channel 60 to the first device 10 which is advantageously a swirler.
  • the channel 60 of the combustion apparatus 100 feeds the oxidant to the first device 10.
  • the channel 60 is formed by a housing element 70 of the combustion apparatus 100 and the common first wall 20 of the combustion chamber 12 and the pre-chamber 14.
  • the channel 60 is arranged separate to the cavity 40.
  • the advantage of the extra channel 60 is that the oxidant can flow constant and undisturbed through the channel 60 to the first device 10. An efficient supply of oxidant to the first device 10 is guaranteed by the channel 60. Only a part of the oxidant is introduced through the at least one first opening 21 and the at least one second opening 22 into the cavity 40 for cooling the common second wall 30 of the pre-chamber 14 and the combustion chamber 12.
  • Such a combustion apparatus 100 enables both a constant and undisturbed supply of oxidant to the first device 10 and an effective cooling of the common second wall 30 of the pre- chamber 14 and the combustion chamber 12 are guaranteed.
  • the introduction of coolant, in particular oxidant, through the at least one second opening 22 into the cavity 40 enables that the coolant flows from the upstream end to the down ⁇ stream end of the cavity 40 and therefore enables an effec ⁇ tive heat removal through the cavity 40.
  • the specific ar ⁇ rangement of the cavity 40 enables additionally to the cool ⁇ ing of the common second wall 30 in the area of the combus- tion-chamber 12 a cooling of the common second wall 30 in the area of the pre-chamber 14.
  • the lifetime of the combustion apparatus 100 can be increased by the better cooling of the common second wall 30.
  • the arrangement of the channel 60 and the cavity 40 around the pre-chamber 14 and the combustion- chamber 12 ensures a perfect feeding of oxidant to the first device 10 of the combustion apparatus 100 and a good cooling of the common second wall 30 which is covering the pre- chamber 14 and the combustion-chamber 12.
  • the heated coolant can be deduced.
  • the double common wall 20, 30 has the advantage that the oxidant which is guided through the channel 60 to the first device 10 is not heated up very strong in direction to the first device 10.
  • the part of the coolant/oxidant which enters the cavity 40, in particular through the second openings 22 is cool enough to provide an effective cooling of the common se ⁇ cond wall 30.
  • the same shape of the common first wall 20 and the common se ⁇ cond wall 30 is the same in figure 2.
  • the common first wall 20 has a larger diameter than the common second wall 30.
  • Alternative to that the distance between the common first wall 20 and the common second wall 30 can be different over the length of the cavity 40.
  • the common second wall 30 of the combustion chamber 12 and the pre-chamber 14 exhibits at least one third opening 31. This at least one third open- ing 31 is adapted for outputting the coolant from the cav ⁇ ity 40 to the combustion chamber 12 and/or the pre- chamber 14.
  • This at least one third opening 31 in the common second wall 30 of the combustion chamber 12 and the pre-chamber 14 can also be a plurality of third openings 31.
  • Figure 2 of the present invention it is shown that the at least one third opening 31 in the second wall 30 is positioned in the area of the combustion chamber 12. Nevertheless, the present inven- tion is not limited to this arrangement.
  • the at least one third opening 31 can also be located in other areas of the second wall 30, which apply useful for the person skilled in the art for an optimized cooling of the combustion chamber 12 and/or the pre-chamber 14.
  • Coolant which is outputted by the at least one third open ⁇ ing 31 into the combustion chamber 12 and/or the pre- chamber 14 can build a cooling film next to the common second wall 30 of the combustion chamber 12 and the pre-chamber 14. Therefore, an optimized cooling of the combustion chamber 12 and the pre-chamber 14 can be realized.
  • the at least one third opening 31 can be realized e.g. by a softwall or by at least one dilution hall or simply by a per- foration of the second wall 30.
  • the combustion apparatus 100 comprises a first device 10, which is adapted for mixing a fuel with an oxidant.
  • the first de- vice 10 is located upstream of the pre-chamber 14.
  • Oxidant which is supplied by a not shown compressor, is supplied to the first device 10.
  • the flow direction of the oxidant is in ⁇ dicated by dotted arrows in the upper left part of Figure 2.
  • the oxidant is outputted by the first device into a radial direction towards the center axis of the first device 10 and the combustion apparatus 100, re ⁇ spectively. It is possible that fuel is injected into the pre-chamber 14 by injection holes where the injected fuel is mixed with the oxidant supplied by the first device 10.
  • the present invention is not limited to this ar ⁇ rangement. It is also possible that fuel is inserted into the first device 10 by e. g. fuel galleries or fuel injection holes so that mixing of the oxidant and the inserted fuel is already conducted in the first device 10. This fuel/oxidant mix is then outputted by the first device into the pre- chamber 14. Even though it is shown in Figure 2 of the present invention that a second device 16 is located between the first de ⁇ vice 10 and the cavity 40 the present invention is not lim ⁇ ited to this arrangement. It is also possible that the second device 16 is omitted. In case of omitting the second de- vice 16 coolant introduced into the cavity 40 is directed to ⁇ wards the first device 10.
  • the first device 10 is adapted for receiving the coolant from the cavity 40. This coolant then is outputted to the pre-chamber 14 where it is spread also into the direction of the combustion chamber 12. Therefore, an optimized cooling of the pre-chamber 14 and the combustion chamber 12 and also of the combustion flame itself can be re ⁇ alized.
  • a second device 16 is located be ⁇ tween the first device 10 and the cavity 40.
  • the second de ⁇ vice 16 is adapted for outputting the coolant introduced into the cavity 40 to the first device 10 and/or the pre- chamber 14.
  • the second device 16 can output the coolant radially or axially. That is, the second device 16 can output the coolant parallel to the center axis of the combustion apparatus 100 or radially towards the center axis of the combustion apparatus 100.
  • the second device 16 can comprise a swirler. This swirler may either be a radial swirler or an axial swirler.
  • the first device 10 can also comprise a swirler, which also may either be a radial swirler or an axial swirler.
  • the axial swirler 10 has to be introduced into the pre- chamber 14.
  • the first device 10 and the second device 16 are integrally formed.
  • the common wall may be a sin- gle sheet of metal pressed into the wanted form such that a pre-chamber and a main combustion chamber are built.
  • the first common wall and the second common wall may have separa ⁇ tors between each other but otherwise should not be joined such that the cavity between the two walls would be blocked.
  • the cavity Over the whole length of the walls, the cavity should have a width to let pass cooling fluid without major interruptions. Specifically no larger areas of the two walls should touch or should be bonded to each other to form a blockage for the cooling fluid.
  • FIG. 3 shows schematically a cross-sectional side view of a further combustion apparatus 100 according to the present invention.
  • a separation element 44 is placed in the cavity 40 dividing the cavity 40 in ⁇ to a first cavity 41 and a second cavity 42.
  • the first cavity 41 is formed by the common first wall 20 and the separation element 44 and the second cavity 42 is formed by the separa ⁇ tion element 44 and the second common wall 30.
  • the cavities 41, 42 are connected with each other by a coolant communicating pathway 45.
  • the at least one first opening 21 is arranged at the downstream end of the first cavity 41 and a fourth opening 23 is arranged at the downstream end of the second cavity 42.
  • a combustion apparatus 100 enables a very effective cooling of the common second wall 30 of the pre-chamber 14 and the combustion chamber 12.
  • the upstream sides of the first cavity 41 and the second cavity 42 are these sides which are arranged around the pre-chamber 14.
  • the coolant can be introduced through the first opening 21 at the downstream end of the first cavity 41.
  • the coolant can flow through the first cavity 41, through the coolant commu ⁇ nicating pathway 45 into the second cavity 42 and from there the heated up coolant can be deduced.
  • the coolant which is introduced through the first opening 21 into the first cavity 41 can be oxidant from the same oxidant source which is intro ⁇ quizd into the channel 60.
  • the coolant can be different to the oxidant which is introduced into the channel 60.
  • coolant through the fourth opening 23 into the second cavity 42.
  • the coolant flows through the sec- ond cavity 42, through the coolant communicating pathway 45 into the first cavity 41 and from there the heated up coolant can be deduced.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Gas Burners (AREA)

Abstract

La présente invention porte sur un appareil de combustion (100), lequel comprend une chambre de combustion (12) dans laquelle se produit la combustion d'un mélange combustible/oxydant, une préchambre (14) placée en amont de la chambre de combustion (12), un premier dispositif (10) destiné à mélanger un combustible avec un oxydant, le premier dispositif (10) étant placé en amont de la préchambre (14), la chambre de combustion (12) et la préchambre (14) comprenant un première paroi commune (20) et une seconde paroi commune (30) espacées l'une de l'autre en formant une cavité (40), la première paroi (20) présentant au moins une première ouverture (21) dans la région de la chambre de combustion (12) servant à introduire un réfrigérant dans la cavité (40), et un canal (60) servant à acheminer l'oxydant au premier dispositif (10), le canal (60) étant formé par un élément d'enveloppe (30) de l'appareil de combustion (100) et par la première paroi commune (20) de la chambre de combustion (12) et de la préchambre (14), la ou les premières ouvertures (21) étant placées dans la région de la chambre de combustion (12), et la première paroi (20) présentant au moins une seconde ouverture (22) servant à introduire le réfrigérant dans la cavité (40), et la ou les secondes ouvertures (22) étant placées dans la région de la préchambre (14).
PCT/EP2011/060492 2010-07-05 2011-06-22 Appareil de combustion et moteur à turbine à gaz Ceased WO2012004131A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201180033349XA CN102959333A (zh) 2010-07-05 2011-06-22 燃烧设备和燃气涡轮发动机
RU2013104536/06A RU2013104536A (ru) 2010-07-05 2011-06-22 Сжигающее устройство и газотурбинный двигатель
EP11728817A EP2553341A1 (fr) 2010-07-05 2011-06-22 Appareil de combustion et moteur à turbine à gaz
US13/808,104 US20140144143A1 (en) 2010-07-05 2011-06-22 Combustion apparatus and gas turbine engine

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EP2837887B1 (fr) * 2013-08-15 2019-06-12 Ansaldo Energia Switzerland AG Chambre de combustion d'une turbine à gaz avec refroidissement de doublure optimisée de chute de pression
EP3159609A1 (fr) * 2015-10-21 2017-04-26 Siemens Aktiengesellschaft Chambre de combustion pour turbine à gaz
ES2870975T3 (es) * 2016-01-15 2021-10-28 Siemens Energy Global Gmbh & Co Kg Cámara de combustión para una turbina de gas
ITUA20163988A1 (it) * 2016-05-31 2017-12-01 Nuovo Pignone Tecnologie Srl Ugello carburante per una turbina a gas con swirler radiale e swirler assiale e turbina a gas / fuel nozzle for a gas turbine with radial swirler and axial swirler and gas turbine
CN107101224B (zh) * 2017-05-23 2023-01-10 新奥能源动力科技（上海）有限公司 一种单管燃烧室和燃气轮机
CN117346183B (zh) * 2023-11-08 2026-04-07 中国人民解放军国防科技大学 一种复合凹腔燃烧室及超燃冲压发动机

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RU2013104536A (ru) 2014-08-10
EP2405200A1 (fr) 2012-01-11
US20140144143A1 (en) 2014-05-29
EP2553341A1 (fr) 2013-02-06

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