Class 15/318.1 - Sequence control

Subclass of Class 15 - Brushing, scrubbing, and general cleaning
Definition: Subject matter comprising means performing two or more operations
No. of patents: 32
Last issue date: 06/10/2008

Number	Title	Issue Date
7383790	Method and apparatus for controlling soot blowing using statistical process control A statistical process control system employs a consistent soot blowing operation for a heat exchange section of, for example, a fuel burning boiler, collects heat absorption data for the heat exchange section and analyzes the distribution of the heat absorption data...	06/10/2008
7132017	Low-pressure cleaning system using high velocity high volume air A method for cleaning a heat exchanging coil in an air conditioning unit using a low-pressure cleaning system to remove foreign particles that have accumulated on the heat exchanging coil. The low-pressure cleaning system discharges air at a low pressure, high veloc...	11/07/2006
7109446	Method and apparatus for improving steam temperature control A system for analyzing the impact of operating soot blowers in a heat transfer section of a power plant determines a steam temperature influencing sequence and calculates a feed-forward signal to be applied to a steam temperature control system of the heat transfer ...	09/19/2006
7047908	Cooling flange An apparatus has a body with first and second faces, an inboard surface bounding a central aperture, an outboard perimeter, and an array of bolt holes between the first and second faces. A channel is inboard of the bolt holes and first and second ports communicate w...	05/23/2006
6170117	Multiple rake sootblower with internal valving manifold A multiple rake sootblower reciprocates over an area to clean an entire surface using a minimum of space for the sootblower stroke. An internal valving manifold and a plurality of bushings inside of a plenum isolate the rakes from each other and operate o...	01/09/2001
5920951	Parameter sensing sootblower A PLC based parameter sensing sootblower having a retractable lance tube that is extended and retracted by a drive motor. A PLC sensing circuit is used to sense when the lance tube is fully extended and/or fully retracted. The PLC sensing circuit can be c...	07/13/1999
5675863	Full coverage sootblower The present invention is directed to a sootblower and particularly to a hub and drive assembly therefore capable of producing improved cleaning by directing the blowing medium over substantially all of the surface to be cleaned. A sootblower in accord wit...	10/14/1997
5672231	Method and apparatus for removing label from a container Method and apparatus for removing a label from a container which includes a cylindrical surface, by blowing air so as to be incident tangentially with respect to the cylindrical surface of the container and flow along the container surface toward a leadin...	09/30/1997
5579726	Apparatus for cleaning boilers A device for cleaning a combustion device such as a boiler coincidentally with operation of the boiler. The apparatus comprises a means for rotation of a lance and rotatable cleaning head attached to the lance. The lance also moves in a linear direction a...	12/03/1996
5517950	System for slag removal and the like A cleaning system comprises a compressor for delivering pressurized air to an accumulator via a valve controlled line. An outlet line extends from the accumulator and terminates adjacent a furnace floor drain. Upon command the entire volume of pressurized...	05/21/1996
5437295	Method and apparatus for constant progression of a cleaning jet across heated surfaces A method and apparatus for cleaning heated surfaces with substantially constant progression of a jet cleaning medium. The invention monitors the rotational and translational position of the lance tube and is programmed with a schedule of lance tube rotati...	08/01/1995
5416946	Sootblower having variable discharge A retractable sootblower for use in cleaning heat exchanger surfaces during a single stroke of its operating cycle. A control system is utilized to vary the rate at which the blowing medium is discharged from the lance tube into the heat exchanger. The ra...	05/23/1995
5355844	System for slag removal and the like A cleaning system comprises a compressor for delivering pressurized air to an accumulator via a valve controlled line. An outlet line extends from the accumulator and terminates adjacent a furnace floor drain. Upon command the entire volume of pressurized...	10/18/1994
5337441	Extraction/insertion type soot blowing apparatus The present invention relates to an extraction/insertion type soot blowing apparatus in which a lance tube is inserted into a combustion chamber, and a high-pressure gas is blown from a nozzle provided at the tip end of the lance tube against a deposit ad...	08/16/1994
5337438	Method and apparatus for constant progression of a cleaning jet across heated surfaces An apparatus for cleaning heated surfaces with substantially constant progression of a jet cleaning medium. The invention monitors the rotational and translational position of the lance tube and is programmed with a schedule of lance tube rotation rates a...	08/16/1994
5320073	Method and apparatus of preheating a sootblower lance A retractable sootblower is provided with means for preheating the sootblower lance prior to introduction of blowing medium into the lance to prevent condensation of the blowing medium which would be subsequently discharged from the lance against internal...	06/14/1994
5293663	Fluid cleaning system A fluid cleaning system for removing meat particles from a rotating roll of a meat stripping machine with a minimum amount of pressurized fluid and water by sequentially opening and closing individual groups of fixed fluid nozzles located closely adjacent...	03/15/1994
5181482	Sootblowing advisor and automation system A method and system for controlling and providing guidance in sootblowing based on continuous plant monitoring and model calculations. The continuous monitoring of plant conditions is through a plant distributed control system (DCS) which communicates wit...	01/26/1993
4996951	Method for soot blowing automation/optimization in boiler operation A system and method for controlling soot removal in a heating device (2) in which heat energy is generated by combustion of a fuel, with accompanying production of soot, to produce combustion product gases, and heat energy is transferred from the product ...	03/05/1991
4825940	Automatic process and device for cleaning a heat exchanger for gaseous fluids Automatic device for regular cleaning of the surfaces of a heat exchanger for gaseous fluids flowing in vertical channels (1) defined between the said surfaces, comprising resilient members (5) arranged permanently in the said channels (1) and capable of ...	05/02/1989
4639968	Machine for cleaning castings A machine for automatically blowing debris, such as sand, out of cavities within engine block and similar type castings which have side openings connected to end openings to form internal cavities. The machine has a ferris-wheel-like frame arranged to rot...	02/03/1987
4562885	Plate heat exchanger and pressure blast cleaner A plate heat exchanger having a plurality of parallel channels for conveying heated gases including entrained pollutants, with transversely directed cooling gases intermediate the polluted gas channels, and an apparatus for periodically cleaning the pollu...	01/07/1986
4539840	Sootblowing system with identification of model parameters A method of identifying a parameter of a model for a rate of loss of boiler efficiency due to a sootblowing operation, in a boiler having a plurality of heat traps, comprises measuring a time since a last sootblowing operation in the heat trap in question...	09/10/1985
4527515	Steam generator cleaning apparatus control system A control system for controlling a cleaning apparatus used for cleaning a steam generator includes a valve manifold which is controlled by a control console to direct a pressurized fluid to either a jetting outlet or a flushing outlet of the cleaning appa...	07/09/1985
4475482	Sootblowing optimization A method for predicting the optimum cycle time to schedule sootblowing using on-line process measurements. The optimum cycle times dynamically adjust to changing conditions resulting from boiler operation, fuel changes, or seasonal changes. The optimum cy...	10/09/1984
4466383	Boiler cleaning optimization with fouling rate identification A method of optimizing the scheduling time between sootblowing operations in a boiler having a plurality of heat traps, comprises measuring the instantaneous efficiency for each heat trap of the boiler, using a filter constant and the amount of load under...	08/21/1984
4454840	Enhanced sootblowing system A method of identifying a parameter of a model for a rate of loss of boiler efficiency due to a sootblowing operation, in a boiler or other convection heat transfer device having a plurality of heat traps, comprises measuring a time since a last sootblowi...	06/19/1984
4424769	Process and apparatus for removal of the sludge deposits on the tube sheet of a steam generator For removal of the sludge deposits on the tube sheet of a steam generator which comprises, in a vertical cylindrical enclosure closed by said sheet, a bundle of parallel heat exchange U-shaped tubes sealingly connected to said sheet at both ends and distr...	01/10/1984
4366003	Apparatus and process for the periodic cleaning-out of solids deposits from heat exchanger pipes The invention concerns an apparatus and a process for the periodic cleaning out of the pipes of heat exchangers to remove deposits of finely-divided solids, in particular carbon black or pyrogenically produced inorganic oxides. The apparatus consists of j...	12/28/1982
4325161	Workpiece cleansing apparatus A workpiece cleansing apparatus has a walking beam conveyor for transporting a camshaft to be cleaned to a first work station consisting of row of cradles which support the camshaft in such a way that oil ports therein are not blocked. Pressurized air is ...	04/20/1982
4209028	Lance construction for boiler cleaning apparatus A lance tube for soot blowers having a steam nozzle near its end, a liquid nozzle spaced rearwardly from the steam nozzle, and a thermostatically operable valve interposed between the nozzles which closes off the steam nozzle when liquid at a temperature ...	06/24/1980
4085438	Digital sootblower control systems and methods therefor Digital sootblower control systems and methods therefor are provided in accordance with the teachings of the present invention. In the digital sootblower control systems provided within the present invention, a programmable controller is interconnected to...	04/18/1978

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Class 15/318.1 - Sequence control