公开(公告)号：US10151487B2

公开(公告)日：2018-12-11

申请号：US14593032

申请日：2015-01-09

Applicant: ANSALDO ENERGIA SWITZERLAND AG

Inventor： Michael Duesing ,  Ewald Freitag

IPC: F23R3/34 ,  F02C3/30 ,  F23R3/04 ,  F23C6/04

Abstract: The invention refers to a sequential combustor arrangement including a first combustor with a first burner for admitting a first fuel into a combustor inlet gas during operation and a first combustion chamber for burning the first fuel, a dilution gas admixer for admixing a dilution gas to the first combustor combustion products leaving the first combustion chamber, and a second burner for admixing a second fuel and a second combustion chamber. To assure good mixing over a wide operating range, the ratio of the pressure loss of the first combustor to the pressure loss of the dilution gas admixer is in the range of 1 to 6. The invention further refers to a gas turbine including such a sequential combustor arrangement as well as method for operating a gas turbine with such a sequential combustor arrangement.

公开(公告)号：US10330319B2

公开(公告)日：2019-06-25

申请号：US14693045

申请日：2015-04-22

Applicant: ANSALDO ENERGIA SWITZERLAND AG

Inventor： Michael Duesing ,  Luis Tay Wo Chong Hilares ,  Mirko Ruben Bothien ,  Jaan Hellat ,  Bruno Schuermans

IPC: F23R3/34 ,  F23C6/04 ,  F23R3/06 ,  F02C6/02 ,  F23R3/00 ,  F23M20/00

Abstract: The invention refers to a sequential combustor arrangement including a first burner, a first combustion chamber, a mixer for admixing a dilution gas to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The mixer includes a plurality of injection pipes pointing inwards from the side walls of the mixer for admixing the dilution gas to cool the hot flue gases leaving the first combustion chamber with a low pressure drop. The disclosure further refers to a method for operating a gas turbine with such a combustor arrangement.

公开(公告)号：US09885481B2

公开(公告)日：2018-02-06

申请号：US14445162

申请日：2014-07-29

Applicant: ANSALDO ENERGIA SWITZERLAND AG

Inventor： Michael Duesing

IPC: F23R3/34 ,  F23R3/16 ,  F23R3/18 ,  F23R3/20 ,  F02C7/228

CPC classification number: F23R3/346 ,  F02C7/228 ,  F05D2220/32 ,  F23R3/16 ,  F23R3/18 ,  F23R3/20 ,  F23R3/34 ,  F23R2900/03341

Abstract: The invention refers to a sequential combustor arrangement including a first burner, a first combustion chamber, a dilution burner for admixing a dilution gas and a second fuel via a dilution-gas-fuel-admixer to the first combustor combustion products. The dilution-gas-fuel-admixer has at least one streamlined body which is arranged in the dilution burner for introducing the at least one second fuel into the dilution burner through at least one fuel nozzle, and which has a streamlined cross-sectional profile and which extends with a longitudinal direction perpendicularly or at an inclination to a main flow direction prevailing in the dilution burner. The streamlined body includes a dilution gas opening for admixing dilution gas into the first combustor combustion products upstream of the at least one fuel nozzle. The disclosure further refers to a method for operating a gas turbine with such a sequential combustor arrangement.