公开(公告)号：JP2000088251A

公开(公告)日：2000-03-31

申请号：JP25309599

申请日：1999-09-07

Applicant: ABB RESEARCH LTD

Inventor： PASCHEREIT CHRISTIAN OLIVER DR ,  WOLFGANG WEISSENSTEIN ,  EPHRAIM GATMARK ,  POLIFKE WOLFGANG DR

IPC: F23R3/30 ,  F02C9/28 ,  F02C9/40 ,  F23R3/28 ,  F23R3/36

Abstract: PROBLEM TO BE SOLVED: To minimize the pressure amplitude of thermoacoustic vibration in a gas turbine combustion chamber by supplying liquid or gaseous mixing fuel via two fuel lines, and by adjusting the amount of supplied fuel for each fuel line via a fuel valve. SOLUTION: A premixing burner forms fuel lines 13 and 14 with an opening 15. The amount of fuel being supplied to the premixing burner via the fuel lines 13 and 14 is changed via one fuel valve for each. Therefore, the amount of fuel being supplied via the fuel line 13 is adjusted regardless of the adjustment of the amount of fuel being supplied via the fuel line 14. More specifically, when the maximum injection is made via the fuel line 13, the minimum injection is carried out via the fuel line 14, and gaseous or liquid fuel 16 is mixed with combustion air 7 via the opening 15.