摘要:
The invention relates to a damper for reducing pulsations in a gas turbine, which comprises: an enclosure; a main neck extending from the enclosure; a spacer plate disposed in the enclosure to separate the enclosure into a first cavity and a second cavity, an inner neck with a first end and a second end, extending through the spacer plate to interconnect the first cavity and the second cavity, wherein the first end of the inner neck remain in the first cavity and the second end remain in the second cavity, characterized in that, a flow deflecting member is disposed proximate the second end of the inner neck to deflect a flow passing through the inner neck. With the solution of the present invention, as a damper according to embodiments of the present invention operates, flow field hence damping characteristic in the second cavity constant regardless the adjustment of the spacer plate in the enclosure.
摘要:
A damper (100) for reducing the pulsations in a combustion chamber (200) of a gas turbine, wherein the damper (100) comprises: a resonator cavity (110) with an inlet (104) and a neck tube (120) in flow communication with the interior of the combustion chamber (200) and resonator cavity (110), and a compensation assembly (130) pivotably connected with the neck tube (120)and is inserted between the resonator cavity (110) and the combustion chamber (200) to permit relative rotation between the combustion chamber (200) and the resonator cavity (110).
摘要:
The damper arrangement (10) comprises a first Helmholtz damper (11) connected in series to a second Helmholtz damper (12). The resonance frequency of the first Helmholtz z damper (11) and the resonance frequency of the second Helmholtz damper (12) are shifted from one another in an amount producing a synergic damping effect.
摘要:
The combustion device (1) for a gas turbine comprises a portion (9) provided with a first and a second wall (11, 12) provided with first passages (14) connecting the zone between the first and second wall (11, 12) to the inner of the combustion device (1) and second passages (15) connecting said zone between the first and second wall (11, 12) to the outer of the combustion device (1). Between the first and second wall (11, 12) a plurality of chambers (17) are defined, each connected with one first passage (14) and at least one second passage (15), and defining a Helmholtz damper.
摘要:
The damper arrangement (20) comprises a plurality of interconnected volumes (V1 and V2) and a plurality of necks (N1 and N2) for connecting the damper (20) to a combustion chamber (5) at a plurality of contact points. The plurality of necks being connected to the plurality of volumes.
摘要:
The combustion device (1) for a gas turbine comprises a portion (6) provided with an inner and an outer wall (7, 8). The inner wall (7) comprises first passages (9) connecting the zone between the inner and outer wall (7, 8) to the inner (10) of the combustion device (1). The outer wall (8) comprises second passages (12) for cooling the inner wall (7). Between the inner and outer wall (7, 8) an intermediate layer (17) is provided defining a plurality of chambers (18), each connected to at least one first passage (9) and a plurality of second passages (12) and defining Helmholtz dampers. These second passages (12) open in third passages (22) connected to the chambers (18) and have facing outlets (23).
摘要:
A probe for measuring high frequent pressure oscillations of hot gases that combine redundancy of the output signals with high quality of the output signals.
摘要:
The combustion device (1) for a gas turbine comprises portions (12) having an inner and an outer wall (13, 14) with an interposed noise absorption plate (15) having a plurality of holes (16). The combustion device (1) further has first passages (17) connecting zones between the inner wall (13) and the plate (15) to the inner of the combustion device (1) and second passages (21) for cooling the inner wall (13). The portions (12) also have an inner layer (22) between the inner wall (13) and the plate (15) defining inner chambers (23), each connected to at least a first passage (17), and an outer layer (24) between the outer wall (14) and the plate (15) defining outer chambers (25) connected to the inner chambers (23) via the holes (16) of the plate (15).
摘要:
There is described herein a fuel injection device for a gas turbine, comprising a plurality of streamlined bodies (30) arranged in a ring adjacent to one another in a circumferential direction relative to a central axis of the fuel injection device, each streamlined body (30) comprising a trailing edge (34) and at least one streamlined body (30) comprising a fuel nozzle (32) on the trailing edge (34), wherein the plurality of streamlined bodies (30) is split into at least a first group of streamlined bodies (30) and a second group of streamlined bodies (30), all the streamlined bodies (30) in the first group being the same and being different from the streamlined bodies (30) in the second group and all the streamlined bodies (30) in the second group being the same, wherein the first group of streamlined bodies (30) comprises at least two streamlined bodies (30) adjacent to one another. Alternatively, the streamlined bodies are clustered in sets of two adjacent streamlined bodies, and in which at least one of the sets is different from the other sets. Alternatively, the streamlined bodies are arranged such that the fuel injection device has a maximum of four-fold rotational symmetry in the plane perpendicular to the central axis. A method of use and a method of design are also described.