Furnaces – Fuel feeders – Feeder responsive to fuel bed height
Reexamination Certificate
2006-03-28
2006-03-28
Rinehart, Kenneth (Department: 3749)
Furnaces
Fuel feeders
Feeder responsive to fuel bed height
C110S1010CF, C110S186000, C110S341000
Reexamination Certificate
active
07017500
ABSTRACT:
Method and apparatus for sensing the overall and/or distribution of fuel weight disposed on the top surface of the grate of a grate-fired device and adjusting the fuel infeed as a function of the flow rate of steam generated by the boiler. A plurality of weight sensors are disposed remote from the grate at selected locations associated with the support for the grate and which provide signals which are convertible to useful representations of the overall weight and/or the distribution of fuel weight over the top surface of the grate in real time and independent of the forward movement of the grate and associated changes in the weight of the fuel on the grate at a given time.
REFERENCES:
patent: 4339998 (1982-07-01), Finch
patent: 4430963 (1984-02-01), Finet
patent: 4621583 (1986-11-01), Kaski
patent: 5398623 (1995-03-01), Lautenschlager et al.
patent: 5606924 (1997-03-01), Martin et al.
patent: 6323442 (2001-11-01), Jones
Eslami Matthew M.
International Paper Company
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