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公开(公告)号：US10247420B2
公开(公告)日：2019-04-02
申请号：US14970857
申请日：2015-12-16
Applicant: ANSALDO ENERGIA SWITZERLAND AG
Inventor： Mirko Ruben Bothien , Luis Tay Wo Chong Hilares , Adnan Eroglu , Bruno Schuermans , Michael Düsing
Abstract: A method is disclosed for operating an axially staged mixer arrangement with dilution air or dilution gas injection in connection with a combustion arrangement of a gas turbine engine or turbo machinery, having at least one combustion chamber, at least one mixer arrangement for admixing air or gas portions to the hot gas flow leaving the combustion chamber. The mixer arrangement includes a plurality of injectors for admixing air portions to cool at least the hot gas flow leaving combustion chamber. The spacing between the last injection location of acting injectors and at least one subsequently arranged dilution air injection, inside of the mixer arrangement in the hot gas flow, where there is no node between the injection locations, corresponds to a distance equal or approximating to half of convective wave length.
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公开(公告)号：US10920985B2
公开(公告)日：2021-02-16
申请号：US14947701
申请日：2015-11-20
Applicant: ANSALDO ENERGIA SWITZERLAND AG
Inventor： Xianfeng Gao , Urs Benz , Andre Theuer , Michael Düsing
Abstract: A fuel lance is disclosed for injecting a gaseous and/or liquid fuel mixed with air into an axial hot gas flow flowing through a sequential combustor of a gas turbine, the fuel lance having at least one finger extending in a longitudinal direction into the axial hot gas flow of the gas turbine essentially perpendicular to the hot gas flow. The finger is configured as a streamlined body which has a streamlined cross-sectional profile. The body has two lateral surfaces essentially parallel to the axial hot gas flow. The body includes an enclosing outer wall having a longitudinally extending air plenum for the distributed introduction of air into the at least one finger. The air plenum is provided with a plurality of distributed impingement cooling holes, such that air exiting through the impingement cooling holes impinges on the inner side of the leading edge region of the body.
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公开(公告)号：US10473333B2
公开(公告)日：2019-11-12
申请号：US15098009
申请日：2016-04-13
Applicant: ANSALDO ENERGIA SWITZERLAND AG
Inventor： Yang Yang , Michael Düsing
Abstract: The invention proposes a vortex generating arrangement, especially for a pre-mixing burner of a gas turbine, having an air conducting channel of predetermined height extending between two essentially parallel channel walls and having a predetermined direction of air flow, and having a plurality of vortex generators arranged in the channel. An improved mixing is achieved by the vortex generators each having the shape of a triangular plate, which is arranged essentially perpendicular to the channel walls and oriented relative to the direction of air flow with a predetermined off-axis angle ≠0°, and a first side of the triangular plate being oriented perpendicular to the channel walls.
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公开(公告)号：US10443852B2
公开(公告)日：2019-10-15
申请号：US14947386
申请日：2015-11-20
Applicant: Ansaldo Energia Switzerland AG
Inventor： Yang Yang , Michael Düsing
Abstract: A lobe lance is disclosed for a gas turbine combustor which includes a plurality of N (N≥4) lobe fingers, each configured as a streamlined body with two lateral surfaces. A plurality of nozzles for injecting a gaseous and/or liquid fuel mixed with air are provided whereby lobes running between the nozzles are provided for improving the mixing quality and reducing pressure loss in said combustor. The lobes of each lobe finger have one of two opposite orientations with respect to said flow direction, and the lobes of all lobe fingers follow a predetermined pattern of orientation across the lobe fingers at least one pair of neighboring lobe fingers has the same lobe orientation resulting in a grouped lobe arrangement ( . . . LL . . . or . . . RR . . . ) such that at least two of the vortices generated by the lobe shape downstream of the lobe fingers combine.
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