Radial staging method and configuration of a liquid injection system for power plants

1. A liquid injection system for a turbine power plant comprising:

a hub configured to be coupled to an air intake case of a turbine power plant;

an annular ring assembly spaced radially outwardly from the hub; and

a plurality of spray bars spoked between and circumferentially spaced about the hub and the annular ring, the spray bars each including an elongated body portion having an inner end coupled to the hub and an outer end coupled to the annular ring assembly, the spray bars each having at least two nozzle assemblies spaced from one another along the body portion, and the spray bars each defining at least two liquid supply manifolds each having an inlet at the annular ring assembly and an outlet at an associated nozzle assembly, the at least two liquid supply manifolds each being configured to supply liquid to an associated at least one of the at least two nozzle assemblies,

wherein the at least two liquid supply manifolds defined by each of the spray bars includes first, second and third manifolds, and wherein the at least two nozzle assemblies includes first, second, third and fourth nozzle assemblies, the first manifold communicating with the first nozzle assembly, the second manifold communicating with the second nozzle assembly, and the third manifold communicating with the third and fourth nozzle assemblies.

2. A liquid injection system as defined in claim 1 , wherein the nozzle assemblies are oriented to spray in directions rearwardly relative to a sideward direction of the associated spray bars.

3. A liquid injection system as defined in claim 1 , wherein the nozzle assemblies are oriented to spray in directions forwardly relative to a sideward direction of the associated spray bars.

4. A liquid injection system as defined in claim 1 , wherein the nozzle assemblies are oriented to spray in directions downwardly relative to the associated spray bars.

5. A liquid injection system as defined in claim 1 , wherein the nozzle assemblies are oriented to spray in directions upwardly relative to the associated spray bars.

6. A liquid injection system for a turbine power plant comprising:

a hub configured to be coupled to an air intake case of a turbine power plant;

an annular ring assembly spaced radially outwardly from the hub; and

a plurality of spray bars spoked between and circumferentially spaced about the hub and the annular ring, the spray bars each including an elongated body portion having an inner end coupled to the hub and an outer end coupled to the annular ring assembly, the spray bars each having at least two nozzle assemblies spaced from one another along the body portion, and the spray bars each defining at least two liquid supply manifolds each having an inlet at the annular ring assembly and an outlet at an associated nozzle assembly, the at least two liquid supply manifolds each being configured to supply liquid to an associated at least one of the at least two nozzle assemblies,

wherein the spray bars each define a recess for accommodating the associated nozzle assemblies.

7. A liquid injection system for a turbine power plant comprising:

a hub configured to be coupled to an air intake case of a turbine power plant;

an annular ring assembly spaced radially outwardly from the hub; and

a plurality of spray bars spoked between and circumferentially spaced about the hub and the annular ring, the spray bars each including an elongated body portion having an inner end coupled to the hub and an outer end coupled to the annular ring assembly, the spray bars each having at least two nozzle assemblies spaced from one another along the body portion, and the spray bars each defining at least two liquid supply manifolds each having an inlet at the annular ring assembly and an outlet at an associated nozzle assembly, the at least two liquid supply manifolds each being configured to supply liquid to an associated at least one of the at least two nozzle assemblies,

further including a plurality of adapter caps each coupled to a different one of the spray bars, the adapter caps each including a plurality of ports each communicating with a different one of the inlets of the liquid supply manifolds.

8. A liquid injection system for a turbine power plant comprising:

a hub configured to be coupled to an air intake case of a turbine power plant;

an annular ring assembly spaced radially outwardly from the hub; and

a plurality of spray bars spoked between and circumferentially spaced about the hub and the annular ring, the spray bars each including an elongated body portion having an inner end coupled to the hub and an outer end coupled to the annular ring assembly, the spray bars each having at least two nozzle assemblies spaced from one another along the body portion, and the spray bars each defining at least two liquid supply manifolds each having an inlet at the annular ring assembly and an outlet at an associated nozzle assembly, the at least two liquid supply manifolds each being configured to supply liquid to an associated at least one of the at least two nozzle assemblies,

wherein the spray bars each include interlocking front and rear pairing assemblies.

9. A liquid injection system as defined in claim 8 , wherein the front pairing assemblies each define a recess for accommodating an associated one of the nozzle assemblies.