Fuel head assembly with replaceable wear components
AssigneeGeneral Electric Technology GmbH
InventorTheron Jamie Bliss
Life of this patent
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Abstract
A fuel head assembly (120) for a pulverized coal nozzle includes removeable back cover (123) that may be removed substantially horizontally to allow access to liners (141,143,145) inside of the fuel head assembly (120) for servicing. This may be used in places where there access from above the fuel head assembly (120) is restricted. The liners (141,143,145) are constructed of a wear-resistant material and include curved vanes (131,133) for more evenly distributing pulverized solid fuel particles, and for reducing erosion of the fuel head assembly (120).
Claims20
A fuel head assembly for directing pulverized solid fuel entrained in a gas stream into a furnace, the fuel head assembly comprising:
- a casing having an inlet port flange at one end of the casing, an outlet port flange at another end of the casing, and an elbow opening disposed in an outer radial portion of the casing, wherein the elbow opening extends between the inlet port flange and the outlet port flange, and wherein the casing includes an outwardly extending casing flange disposed about the elbow opening;
- a curved back cover including an outwardly extending cover flange in parallel contact with and removably attachable to the outwardly extending casing flange to form an arcuate conduit having an inner wall;
- a wear-resistant casing liner being tubular and disposed within the arcuate conduit to form a tubular inner wall extending circumferentially about the inner wall of the conduit and fluidly coupling the inlet port flange and the outlet port flange, the wear-resistant casing liner including an upper casing liner section, a middle casing liner section and a lower casing liner section being insertable into and replaceable through the elbow opening of the casing,
- wherein each of the upper casing liner section, the middle casing liner section and the lower casing liner section includes at least one of a tab and a complementary notch to interconnect the upper casing liner section, the middle casing liner section and the middle casing liner section together.
A fuel head assembly for directing pulverized solid fuel entrained in a gas stream into a furnace, the fuel head assembly comprising:
- an elbow-shaped casing having an inlet port flange at one end of the casing, an outlet port flange at another end of the casing, and an elbow opening disposed in an outer radial portion of the casing, wherein the elbow opening extends between and spaced from the inlet port flange and the outlet port flange;
- a curved back cover including an outwardly extending cover flange in contact with and removably attachable to the outwardly extending casing flange to form an arcuate conduit having an inner wall;
- and
- a tubular wear-resistant casing liner disposed within the arcuate conduit to form a tubular inner wall extending circumferentially about the inner wall of the conduit and fluidly coupling the inlet port flange and the outlet port flange, the wear-resistant casing liner comprising an upper casing liner section, a lower casing liner section, and a middle casing liner section,
- wherein each of the upper casing liner section, the middle casing liner section and the lower casing liner section comprises at least one of a tab and a complementary notch to interconnect the upper casing liner section, the middle casing liner section and the middle casing liner section together.
Dependencies are inferred from the claim text.