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1.发明专利
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
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.
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公开(公告)号：JPH10169986A
公开(公告)日：1998-06-26
申请号：JP32803597
申请日：1997-11-28
Applicant: ABB RESEARCH LTD
Abstract: PROBLEM TO BE SOLVED: To significantly absorb vibration of low frequency in a combustion chamber. SOLUTION: Preparation of heat gas in a combustion chamber is performed continuously in two combustriuon steps (20, 40). A cross section narrowed part when viewed in a flow direction is disposed at a final end of the first combustion stage (20). Heat gas (21) prepared in the first combustion stage (20) through the cross section narrowed part is transferred to the second combustion stage (40). A mach number in an outlet (31) of the cross section narrowed part (30) corresponds to an area ratio of an outlet surface (A2) to an inlet surface (A1).
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公开(公告)号：DE19545026A1
公开(公告)日：1997-06-05
申请号：DE19545026
申请日：1995-12-02
Applicant: ABB RESEARCH LTD
Inventor： DOEBBELING KLAUS DR , EROGLU ADNAN DR , KNOEPFEL HANS PETER , POLIFKE WOLFGANG DR , WINKLER DIETER
Abstract: The pre-mix burner has a vortex stabilising cavity (20), formed from offset part bodies (11,12) fitting in each other, and a conical inner body (13). Input channels (11c,12c) extend upstream of the tangential air input slits (11a,12a) formed by the offset part bodies. Each input channel has at least one device (11d,12d) to cause turbulence in the air flow (23), and a system for introducing the fuel. The fuel should preferably be introduced downstream of the turbulence causing devices.
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公开(公告)号：DE19548853A1
公开(公告)日：1997-07-03
申请号：DE19548853
申请日：1995-12-27
Applicant: ABB RESEARCH LTD
Inventor： DOEBBELING KLAUS DR , EROGLU ADNAN DR , KNOEPFEL HANS PETER , POLIFKE WOLFGANG DR , SATTELMAYER THOMAS DR
Abstract: The burner has a body (26) of two hollow, conical bodies (1,2) which are disposed offset to one another, so that their centre axes (4,5) is in the flow direction. A tapered cavity is formed, expanding towards the flow direction, having tangential air-intake grooves (7) between the conical bodies. A number of fuel supply openings, for gaseous fuel, are evenly distributed in the overall area of the grooves. At the upstream end of the cone burner, a central liquid fuel nozzle (15) is arranged, leading into the burner cavity; whereas at the downstream end, the conical bodies posses a common outlet diffusor (27). Towards the discharge diffusor the two conical bodies have a transient area (28), which continuously takes the weight of the air-intake grooves in the flow direction. The diffusor is circular and is formed without any grooves.
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公开(公告)号：DE19649486A1
公开(公告)日：1998-06-04
申请号：DE19649486
申请日：1996-11-29
Applicant: ABB RESEARCH LTD
Abstract: The chamber comprises a cross-sectional narrowing (30) in the flow direction which enables the transition of the hot gases (21) between the first stage (20) and the succeeding stage (40). The cross-sectional narrowing has a structure with the Mach number at the outlet (31) being equal to the surface ratio of the narrowing. The surface ratio is a quotient of the outlet surface (A2) over the inlet surface (A1). The axial length (L) of the cross-sectional narrowing is 5% greater than the diameter at the inlet surface. The combustion chamber is of the ring type and is operable with at least one pre-mix burner (10).
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Patent Agency Ranking
公开(公告)号：DE19544816A1
公开(公告)日：1997-06-05
申请号：DE19544816
申请日：1995-12-01
Applicant: ABB RESEARCH LTD
Inventor： EROGLU ADNAN DR , POLIFKE WOLFGANG DR , SENIOR PETER DR
Abstract: An original unit mixes fluids having identical or differing mass flow rates. Flowing along a partition wall (22), they pass freely around surfaces of several, adjacent, downstream, turbulent eddy generators (9). Sides (11, 13) of these bodies (9) are flush with one side of the partition (22). Between them, and angle ( alpha ) is included. The long edges of the body (12, 14) include an angle (&thetas; ) with the wall (22). The sides (11, 13) share a connecting edge (16) which is perpendicular to the wall (22), forming the leading edge. The body has a roof in two sections (1, 2), terminating at the sides (11, 13), and connecting at a edge (10). The trailing edges (5, 6) of the roof sections subtend an angle ( gamma ) with the wall (22), and lie on the opposite side of it. A base has two sections (3, 4) joining at an edge (30), and connected by the rear edges (5, 6) to the roof sections.
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公开(公告)号：DE19721937A1
公开(公告)日：1998-12-03
申请号：DE19721937
申请日：1997-05-26
Applicant: ABB RESEARCH LTD
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公开(公告)号：DE4444125A1
公开(公告)日：1996-06-13
申请号：DE4444125
申请日：1994-12-12
Applicant: ABB RESEARCH LTD
Inventor： DOEBBELING KLAUS DR , POLIFKE WOLFGANG DR , SATTELMAYER THOMAS DR , WINKLER DIETER
Abstract: The process has two combustion stages. In the first stage, a fuel-air mixture (1) is burnt in an intensive mixing and recirculation zone (3), which stabilises the flame. In the second stage, fresh fuel-air mixture is added and further combustion takes place, in the exhaust gases of the first stage.Only a part (1a) of the fuel-air mixture is guided through the mixture zone of the first stage, and the remainder (1b) is added downstream to at least one further stage of combustion in the hot exhaust gases of the previous stage. Heat may also be extracted from the first stage mixing zone, and may be transmitted to that part of the fuel-air mixture which is guided past it to the second stage.
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公开(公告)号：DE19721936A1
公开(公告)日：1998-12-03
申请号：DE19721936
申请日：1997-05-26
Applicant: ABB RESEARCH LTD
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公开(公告)号：DE59402785D1
公开(公告)日：1997-06-26
申请号：DE59402785
申请日：1994-01-27
Applicant: ABB RESEARCH LTD
Abstract: In a double-cone burner, at least one row of nozzles (10) for a fuel (15) containing highly reactive gaseous components and having a medium calorific value is mounted on the circumference of the partial conical bodies (1, 2) of the burner in the vicinity of the burner outlet, at a distance of about 30% of the nominal diameter of the burner. In addition, there is a fuel line (11) and a distributing channel (17), positioned in the region of the nozzles (10), for the highly reactive fuel. The fuel (15) containing highly reactive gaseous components is injected at high speed through the nozzles (10), which have a diameter of less than 1% of the nominal diameter of the burner, into the zones of high air speed and the depth of penetration and the direction of the fuel jets are matched to one another in such a way that ignition following mixing takes place only after the burner.
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