Combustion device for annular injection of a premixed gas and method for controlling the combustion device
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsHiroyuki Kashihara, Yasushi Yoshino
Life of this patent
Estimating the term…
Abstract
A combustion device includes: a combustion liner in which a combustion chamber is formed; a main burner provided at a top portion of the combustion liner and including a premix passage configured to annularly inject a pre-mixed gas of a fuel and air into the combustion chamber and a radial swirler configured to introduce the fuel and the air to the premix passage in a radially inward direction; and a fuel injection pipe configured to inject the fuel to the radial swirler from an entrance side of the radial swirler, and the radial swirler is divided into a plurality of swirler stages by dividing plates in an axial direction.
Claims7
A combustion device comprising:
- a combustion liner in which a combustion chamber is formed;
- a main burner provided at a top portion of the combustion liner and including a premix passage configured to annularly inject a pre-mixed gas of a fuel and air into the combustion chamber and a radial swirler configured to introduce the fuel and the air to the premix passage in a radially inward direction;
- a fuel injection pipe configured to inject the fuel to the radial swirler from an entrance side of the radial swirler;
- and
- wherein the premix passage includes a radially extending upstream portion and an axially extending downstream portion, the radial swirler includes swirl vanes and dividing plates which divide the swirl vanes into a plurality of swirler stages in an axial direction, and the radial swirler fits in the upstream portion of the premix passage.
A method for controlling a combustion device,
- the combustion device including:
- a combustion liner in which a combustion chamber is formed;
- a main burner provided at a top portion of the combustion liner and including a premix passage configured to annularly inject a pre-mixed gas of a fuel and air into the combustion chamber and a radial swirler configured to introduce the fuel and the air to the premix passage in a radially inward direction;
- and a fuel injection pipe configured to inject the fuel to the radial swirler from an entrance side of the radial swirler, the premix passage including a radially extending upstream portion and an axially extending downstream portion;
- the radial swirler including swirl stage in an axial direction;
- and the radial swirler fitting in the upstream portion of the premix passage;
- the method comprising the step of controlling a flow rate of the fuel supplied for each of the swirler stages to control a radial fuel concentration distribution of the pre-mixed gas injected from the main burner into the combustion chamber.
Dependencies are inferred from the claim text.