Externally adjustable pipe orifice assembly

Details Externally adjustable pipe orifice assembly Externally adjustable pipe orifice assembly

1983-01-24

1984-07-17

Yuen, Henry C.

Furnaces

Utilizing powdered fuel

Having secondary air mixing means

251212, 251 8, 110263, F23D 100

Patent

active

044599226

ABSTRACT:
A coal pulverizer is connected to the burner nozzles of a tangentially-fired furnace with conduits of varying lengths through which air-entrained coal is supplied for combustion within the furnace. An externally adjustable orifice assembly is mounted in each connecting conduit to equalize the flow of coal/air through the conduits to nozzles in the windboxes. Each orifice assembly comprises pivotable plates which move transverse the axis of the conduit to form an orifice in controlling the coal/air flow.

REFERENCES:
patent: 3102710 (1963-09-01), Dresden
patent: 3584830 (1971-06-01), Koehn
patent: 3626497 (1971-12-01), Lambert
patent: 3787022 (1974-01-01), Wilcox
patent: 4092010 (1978-05-01), Carlson, Jr.
patent: 4094492 (1978-06-01), Beeman et al.
patent: 4150631 (1979-04-01), Frey et al.
patent: 4232595 (1980-11-01), Cox
patent: 4300749 (1981-11-01), Ferro et al.

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