• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a combustion chamber (10) of a turbine, in particular a thermodynamic cycle turbine with recuperator, for the production of energy, in particular electrical energy, comprising a housing (12) with a means injection device (52) of at least one fuel and an inlet (32) of hot compressed air, said housing housing a flame tube (22) with a perforated diffuser (26) for the passage of hot compressed air and fuel, and a flame stabilizer (54). According to the invention, the chamber comprises an air deflector (36) disposed opposite the compressed hot air inlet (32) for circulating this hot air in a single axial direction from this inlet.
    公开号:FR3055403A1
    申请号:FR1657991
    申请日:2016-08-29
    公开日:2018-03-02
    发明作者:Hubert BAYA TODA；Jean-Baptiste Michel；Thomas VALIN；Julien THIRIOT
    申请人:IFP Energies Nouvelles IFPEN；
    IPC主号:
    专利说明:

    ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number: 3,055,403 (to be used only for reproduction orders) (© National registration number: 16 57991
    COURBEVOIE © Int Cl 8 : F23 R 3/44 (2017.01), F23 R 3/14, 3/28, 3/34, F23 C 6/04
    A1 PATENT APPLICATION
    (© Date of filing: 08.29.16. © Applicant (s): IFP ENERGIES NOUVELLES Etablis- (30) Priority: public education - FR. @ Inventor (s): BAYA TODA HUBERT, MICHEL JEAN-BAPTISTE, VALIN THOMAS and THIRIOT (43) Date of public availability of the JULIAN. request: 02.03.18 Bulletin 18/09. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): IFP ENERGIES NOUVELLES Etablisse- related: public. ©) Extension request (s): © Agent (s): IFP ENERGIES NOUVELLES.
    COMBUSTION CHAMBER WITH A HOT COMPRESSED AIR DEFLECTOR, ESPECIALLY FOR A TURBINE INTENDED FOR THE PRODUCTION OF ENERGY, ESPECIALLY ELECTRICAL ENERGY.
    FR 3 055 403 - A1 fb / d The present invention relates to a combustion chamber (10) of a turbine, in particular a thermodynamic cycle turbine with recuperator, for the production of energy, in particular electrical energy, comprising a housing (12) with means for injecting (52) at least one fuel and an inlet (32) of hot compressed air, said housing housing a flame tube (22) with a perforated diffuser (26) for the passage of hot compressed air and fuel, and a flame stabilizer (54).
    According to the invention, the chamber comprises an air deflector (36) disposed opposite the intake of compressed hot air (32) to circulate this hot air in a single axial direction from this intake.

    The present invention relates to a combustion chamber of a turbine, in particular of a thermodynamic cycle turbine with recuperator, for the production of energy, in particular electrical energy.
    It relates more particularly to a microturbine with recuperator for the production of electricity from a liquid or gaseous fuel.
    Generally, it is understood by microturbine a turbine of small power usually less than 200KW.
    As best described in application WO 2012/039611, a turbine with recuperator generally comprises at least one compression stage with at least one compressor, a combustion chamber (or burner), at least one expansion stage with at least one expansion, a heat exchange device (or recuperator) between the compressor and the combustion chamber for heating the gases compressed by the compressor to send them with a high temperature to the combustion chamber, this exchange device being traversed by hot gases from the turbine.
    As described in French patent application No. 15/59314 of the applicant, the combustion chamber comprises a box through which circulates the hot compressed air from the recuperator and a flame tube, located inside this box, in which combustion takes place.
    The flame tube includes a primary zone which receives part of the total hot compressed air flow and in which combustion takes place and a dilution zone where the mixture between the burnt gases from the primary zone and the compressed gases takes place. hot from dilution holes on the tube.
    The primary zone also includes a perforated diffuser allowing the passage of hot compressed air as well as fuel from a fuel injection system (liquid or gaseous) placed upstream of the diffuser.
    As better described in the aforementioned application, the flame tube carries a flame stabilizer comprising the perforated diffuser, at least one flue gas recirculation passage and a mixing tube.
    This combustion chamber, although satisfactory, nevertheless presents significant drawbacks.
    Indeed, the compressed air is distributed in this combustion chamber in two flows. The first air flow is directed to the primary zone where combustion takes place while the second flow will enter directly into the dilution zone via the dilution holes to obtain, at the outlet of the combustion chamber, a homogeneous mixture. temperature and composition.
    As a result, the asymmetry of the entry of compressed air into the combustion chamber with respect to the flame tube leads to a significant asymmetry in the flow of air and burnt gases. This can lead to licking of the wall by hot gases from the combustion of fuel in the primary zone. These gases, which can have very high temperatures (over 1500 ° C), can damage the wall of the flame tube.
    This results in a strong limitation of the life of the flame tube, except to realize it in very expensive materials.
    In addition, if the flame is not correctly located in the flame tube, the efficiency of the dilution zone is reduced and can lead to significant temperature heterogeneities at the outlet of the combustion chamber, which could reduce the life of the turbine.
    In addition, incomplete combustion can occur with the risk of extinction and the production of pollutants.
    The present invention proposes to overcome the aforementioned drawbacks with a combustion chamber having an improvement in the location of hot zones by allowing better durability of the parts as well as better temperature uniformity at the outlet of the combustion chamber and a design cheaper.
    To this end, the present invention relates to a combustion chamber of a turbine, in particular a thermodynamic cycle turbine with recuperator, for the production of energy, in particular electrical energy, comprising a housing with a means of injection of at least one fuel and a hot compressed air intake, said housing housing a flame tube with a perforated diffuser for the passage of hot compressed air and fuel, and a flame stabilizer, characterized in that the chamber comprises an air deflector disposed opposite the intake of compressed hot air to circulate this hot air in one axial direction from this intake of hot air.
    The air deflector may include a tube placed between the housing and the flame tube.
    The tube may include a tubular fixing portion and a tubular air diversion portion, of different section, connected to each other by a junction portion.
    The tubular attachment portion may have a diameter substantially equal to the diameter of the housing and the bypass tubular portion may have a diameter which is larger than the diameter of the flame tube and smaller than that of the diameter of the housing.
    The tubular bypass portion may have a diameter which is substantially the average of the diameters of the housing and the flame tube.
    The combustion chamber may include an air circulation passage between the bypass portion and the housing and another air circulation passage between said bypass portion and the flame tube, the two passages being connected by a connecting passage .
    The radial height of the circulation passages can be identical.
    The other characteristics and advantages of the invention will now appear on reading the description which follows, given for illustration only and without limitation, and to which is appended the single figure which is a diagram illustrating a combustion chamber according to the invention for a turbine for the production of energy, in particular electrical energy.
    The combustion chamber 10 illustrated in the figure comprises a casing 12 of cylindrical shape with a tubular wall 14 of substantially circular section. This housing is closed at one of its ends by an injector partition 16 and at the other of its ends by an annular partition 18 with a substantially circular opening 20.
    This combustion chamber also comprises a flame tube 22, also of substantially cylindrical shape, housed coaxially in the housing being of diameter smaller than the housing but of diameter identical to that of the opening 20 of the annular partition. This tube comprises a wall 24 of substantially circular section, one end closed by a diffusion partition 26 facing and at a distance from the injector partition 16, and an open end 28 which passes through the annular partition by cooperating with sealing with the diameter inside this annular partition to form the outlet 30 of this combustion chamber.
    The housing carries on its peripheral wall 14, substantially at equal distance between the injector-carrying partition and the annular partition, an inlet for hot compressed air 32.
    As best seen in the figure, an air deflector 34 is placed between the two walls 14 and 24 and facing this air intake to circulate this hot air in one axial direction from this intake.
    More particularly, this deflector comprises a tube 36 open at each of its ends 38, 40. This tube comprises a tubular fixing portion 42 and a tubular air bypass portion 44, of different section, connected together by a portion junction 46, here of frustoconical shape.
    The section of the tubular portion of larger section 42, which corresponds to the tubular fixing portion, has an outside diameter substantially equal to that of the inside diameter of the housing 12 while the section of the tubular portion of smaller section 44, which corresponds to the tubular air diversion portion, has an outside diameter which is larger than the outside diameter of the wall 24 of the flame tube 22 and smaller than that of the inside diameter of the wall 14 of the housing 12.
    This deflector is housed in the combustion chamber in such a way that the tubular fixing portion 42 is housed between the injector bulkhead 16 and the diffusion bulkhead 26 while being fixed by any known means (soldering, welding, etc.). ) at the wall of the housing, that the tubular air bypass portion 44 is located substantially opposite the air intake 32 and that the frustoconical portion 46 is placed near this intake.
    Advantageously, the diameter of the tubular air bypass portion is such that it is equivalent to the average of the diameters of the housing 12 and of the flame tube 22. This makes it possible to create passages for the circulation of compressed air in the same way. radial height R between this portion and respectively the housing (passage 48) and the flame tube (passage 50).
    Similarly, the open end 40 of the tubular air bypass portion 44 is located at a distance from the annular partition 18 so that the distance between this open end and the partition creates a connecting passage 51, the axial dimension D is at least equal to the radial height R.
    Thus, during the admission of the compressed hot air, the latter circulates in passages without significant dimensional variation.
    In the figure, the injector bulkhead carries a means for injecting at least one fuel 52, here in the form of an injector coaxial with the flame tube, opposite a flame stabilizer 54 which is placed on the diffusion partition 26.
    This stabilizer comprises a perforated diffuser 56 housed in the diffusion partition 26 and comprising a multiplicity of axial holes 58 regularly distributed circumferentially on the sole and a central axial orifice 60. This sole continues in an axial direction and opposite to the partition by axial arms 62, here three arms arranged at 120 ° apart from each other, and carrying at their ends a mixing tube 64 of limited axial extent and of outside diameter less than the inside diameter of the flame tube 22.
    The flame tube also comprises circumferential rows of radial dilution orifices 66 placed at a distance from the diffusion partition and near the annular partition of the casing, being regularly distributed advantageously on either side of the end region. free of portion 44.
    The combustion chamber thus formed comprises an injection / mixing zone ZM where the hot compressed air is mixed with the fuel and the start of combustion, a primary zone ZP in which combustion takes place, and a zone dilution ZD where the mixing takes place between the burnt gases from the primary zone and the hot compressed air from the dilution holes.
    In operation, the fuel, here in liquid form, is injected by the injector 52 in the direction of the diffusion partition 26 to pass through the central orifice 60. The hot compressed air coming from the inlet 32 is deflected by the deflector 34 according to arrow F1 in the first place by the frustoconical portion 46 to terminate in the passage 48. This air circulates in an axial direction starting from the admission 32 and throughout this passage 48 according to a single direction of circulation, here from left to right by considering arrow F2 to arrive at the end passage 51. Arrived at this passage, the air has a direction of radial circulation according to arrow F3 then circulates in passage 50, in an opposite axial direction to that of passage 48 according to arrow F4. Part of the air circulating in the passage 50 then enters the flame tube through the dilution orifices (arrow F5) and the other part this air arrives in the mixing zone ZM (arrow F6). This air then passes through the holes 58 of the diffusion wall 26 and is directed into the mixing tube 64 in which the liquid fuel evaporates, then the combustion.
    Thanks to the deflector, the flow of air from the intake is directed towards the side opposite to the mixing zone before returning to this mixing zone by surrounding the tubular air bypass portion 44.
    In doing so:
    the air arrival velocities in the space located in the tubular air bypass portion 44 are low and more symmetrical (symmetry of revolution) with respect to the central axis of the tubular bypass portion of air, which improves the efficiency of the dilution. Indeed, in each of the different rows of dilution holes 66, the speeds of entry of air into the dilution zone are close for all the holes;
    - the tubular air diversion portion 44, which is the hottest room, is better insulated from the outside by the double air flow;
    - the speeds of arrival in the zone located between diffusion partition 26 and the box 12 are very low due to the large section of the mixing zone ZM and the relatively low flow (part of the total flow leaves in the diffusion zone ZD). This zone behaves like a collector making it possible to have entry speeds into the main zone ZP via the diffusion wall which are normal to the wall and which are identical for each concentric row of holes. In this, the flame then generated in the primary zone ZP is located well around the axis of the tubular air bypass portion.
    权利要求:
    Claims (8)
    [1" id="c-fr-0001]
    1) Combustion chamber (10) of a turbine, in particular a thermodynamic cycle turbine with recuperator, for the production of energy, in particular electrical energy, comprising a housing (12) with an injection means (52) of at least one fuel and an inlet (32) of hot compressed air, said housing housing a flame tube (22) with a perforated diffuser (26) for the passage of hot compressed air and fuel , and a flame stabilizer (54), characterized in that the chamber comprises an air deflector (34) disposed opposite the intake of compressed hot air (32) for circulating this hot air in one direction axial from this admission.
    [2" id="c-fr-0002]
    2) Combustion chamber according to claim 1, characterized in that the air deflector (34) comprises a tube (36) placed between the housing (12) and the flame tube (22).
    [3" id="c-fr-0003]
    3) Combustion chamber according to claim 2, characterized in that the tube (36) comprises a tubular fixing portion (42) and a tubular air diversion portion (44), of different section, connected together by a junction portion (46).
    [4" id="c-fr-0004]
    4) Combustion chamber according to claim 3, characterized in that the tubular fixing portion (42) has a diameter substantially equal to the diameter of the housing (12) and in that the tubular bypass portion (44) has a diameter which is larger than the diameter of the flame tube (22) and smaller than that of the diameter of the housing (12).
    [5" id="c-fr-0005]
    5) Combustion chamber according to claim 3 or 4, characterized in that the tubular bypass portion (44) has a diameter which is substantially the average of the diameters of the housing (12) and the flame tube (22).
    [6" id="c-fr-0006]
    6) Combustion chamber according to one of the preceding claims, characterized in that it comprises an air circulation passage (48) between the bypass portion (44) and the housing (12) and another circulation passage d air (50) between said bypass portion and the flame tube, the two passages being connected by a connecting passage (51).
    [7" id="c-fr-0007]
    7) Combustion chamber according to one of the preceding claims,
    5 characterized in that the radial height of the circulation passages (48, 50) is identical.
    [8" id="c-fr-0008]
    8) Turbine, in particular a thermodynamic cycle turbine with recuperator, for the production of energy, in particular electrical energy,
    10 comprising at least one compression stage with at least one gas compressor, a heat exchanger, a combustion chamber, and at least one expansion stage with at least one expansion turbine connected by a shaft to the compressor, characterized in that that it comprises a combustion chamber (10) according to one of the preceding claims.
    1/1
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    同族专利:
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    法律状态:
    2017-08-01| PLFP| Fee payment|Year of fee payment: 2 |
    2018-03-02| PLSC| Publication of the preliminary search report|Effective date: 20180302 |
    2018-08-29| PLFP| Fee payment|Year of fee payment: 3 |
    2019-08-27| PLFP| Fee payment|Year of fee payment: 4 |
    2020-08-24| PLFP| Fee payment|Year of fee payment: 5 |
    2021-08-26| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1657991A|FR3055403B1|2016-08-29|2016-08-29|COMBUSTION CHAMBER WITH A HOT COMPRESSED AIR DEFLECTOR, ESPECIALLY FOR A TURBINE INTENDED FOR ENERGY PRODUCTION, ESPECIALLY ELECTRICAL ENERGY|
    FR1657991|2016-08-29|FR1657991A| FR3055403B1|2016-08-29|2016-08-29|COMBUSTION CHAMBER WITH A HOT COMPRESSED AIR DEFLECTOR, ESPECIALLY FOR A TURBINE INTENDED FOR ENERGY PRODUCTION, ESPECIALLY ELECTRICAL ENERGY|
    EP17735604.5A| EP3504481B1|2016-08-29|2017-07-11|Combustion chamber with a hot compressed air deflector, in particular for a turbine intended for producing energy, in particular electrical energy|
    CN201780053002.9A| CN109642729B|2016-08-29|2017-07-11|Turbine for energy production and combustion chamber thereof|
    PCT/EP2017/067434| WO2018041455A1|2016-08-29|2017-07-11|Combustion chamber with a hot compressed air deflector, in particular for a turbine intended for producing energy, in particular electrical energy|
    US16/328,764| US11162422B2|2016-08-29|2017-07-11|Combustion chamber with a hot compressed air deflector, in particular for a turbine intended for producing energy, in particular electrical energy|
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