Patent ID: 11859813
Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A pulverized solid fuel nozzle tip assembly adapted for cooperative operation with a pulverized solid fuel pipe nozzle to issue a stream of pulverized solid fuel and air to a pulverized solid fuel-fired boiler, comprising:
an outer nozzle tip portion adapted for mounting in supported relation with the pulverized solid fuel pipe nozzle, the outer nozzle tip portion having an inlet end, an outlet end, and a flow channel extending therethrough from the inlet end to the outlet end, wherein the outer nozzle tip portion includes:
a pair of opposing lateral sidewalls, each of the opposing lateral sidewalls including a front surface having a contoured profile defining a plurality of spaced recess portions with nose portions formed therebetween;
a plurality of inset lug plates coupled to the pair of opposing lateral sidewalls, each inset lug plate disposed flush with one of the nose portions in each of the opposing lateral sidewalls; and
a seal frame structure located interior to the pair of opposing lateral sidewalls, the seal frame structure having a top plate and a bottom plate spaced apart from the top plate, both the top plate and the bottom plate extending horizontally between the pair of opposing lateral sidewalls; and

an inner nozzle tip portion tiltably secured to the outer nozzle tip portion for longitudinal movement relative to the outer nozzle tip portion, the inner nozzle tip portion having an inlet end, an outlet end, and a flow passageway formed therebetween to receive the stream of pulverized solid fuel and air, wherein the inner nozzle tip portion includes:
a pair of opposing sidewalls, each of the opposing sidewalls having a back surface with a contoured profile defining a plurality of spaced recess portions with nose portions formed therebetween, the nose portions on the back surfaces of the opposing sidewalls of the inner nozzle tip portion seated correspondingly in the recess portions on the front surfaces of the opposing lateral sidewalls of the outer nozzle tip portion, and the nose portions and the respective inset lug plates on the front surfaces of the opposing lateral sidewalls of the outer nozzle tip portion seated correspondingly in the recess portions on the back surfaces of the sidewalls of the inner nozzle tip portion.