Abstract: A modular canopy having standardized side panels, trusses and tracks. The modular canopy includes parallel opposing sidewalls formed from multiple standardized side panels. Each sidewall extends from a front mounting structure to a rear mounting structure and carries a track that typically extends the almost entire length of the sidewall for supporting the carriage of the sootblower within the canopy. Trusses connect adjacent side panels together and extend from one sidewall to the other over the top of the sidewalls. The modular canopy may also include standardized removable or permanently attached covers. The canopy is typically assembled with permanent fasteners, such as lockbolts, that cannot be removed without destroying the fasteners. A sootblower canopy of any desired length can therefore be manufactured or repaired from a common set of component parts with one of the sections, typically an end section, cut to the desired length as needed.

Abstract: A modular canopy having standardized side panels, trusses and tracks. The modular canopy includes parallel opposing sidewalls formed from multiple standardized side panels. Each sidewall extends from a front mounting structure to a rear mounting structure and carries a track that typically extends the almost entire length of the sidewall for supporting the carriage of the sootblower within the canopy. Trusses connect adjacent side panels together and extend from one sidewall to the other over the top of the sidewalls. The modular canopy may also include standardized removable or permanently attached covers. The canopy is typically assembled with permanent fasteners, such as lockbolts, that cannot be removed without destroying the fasteners. A sootblower canopy of any desired length can therefore be manufactured or repaired from a common set of component parts with one of the sections, typically an end section, cut to the desired length as needed.

Abstract: An integral packing housing and packing material unit; a method for packing replacement, boiler cleaning; and a method for maintenance of a desired boiler output rating. The integral packing unit includes a housing for removably holding a sacrificial packing material that is configured to form a steam seal between a sootblower steam tube and lance spindle when the packing unit is installed in an operative position in association with the steam tube and the spindle and the packing material is loaded by applying compression to the packing material. A compression unit is typically coupled to the housing unit to apply such compression to load the packing material while the packing unit is installed in the operative position. The packing unit may also includes a detent mechanism, such set screws, for unloading the packing material to facilitate installing the packing unit on, and removing the packing unit from, the operative position.

Abstract: A method for controlling the positioning of a stream of pressurized fluid against a surface zone of a stream generator to clean contaminants. The coordinates of a plurality of points of the surface zone to be cleaned are first determined. The coordinates are measured with respect to a fixed coordinate system with origin point at the location where the lance water cannon penetrates the cannon wall of the steam generator. The determined boundary points are converted into corresponding angles with respect to the horizontal plane and the cannon wall. These angles are then used directly to control the position of the lance with respect to the fixed coordinate system. The stream of pressurized fluid is directed against the surface zone in a predetermined pattern by monitoring and controlling the angle of the lance through axial resolvers.

Abstract: A multi-media rotating sootblower that includes multiple rotating and individually controlled cleaning fluid applicators, such a set of steam nozzles and two sets of water nozzles, and an automatic boiler cleaning system using these sootblowers. The boiler superheater typically includes a system of these sootblowers to clean a number of large platens that are arranged in rows. The boiler may also include additional boiler cleaning equipment, including water cannons to clean the furnace, and conventional steam sootblowers to clean other heat exchangers of the boiler. A number of sensors, including heat transfer gauges that measure the heat transfer at the furnace wall, strain gauges that measure the weight of slag deposits on platens, and boiler cameras are used to monitor slag accumulations within the boiler. A control system uses this sensor data to automatically operate the boiler cleaning system to implement an automatic boiler cleaning regimen.

Abstract: An integral packing housing and packing material unit; a method for packing replacement, boiler cleaning; and a method for maintenance of a desired boiler output rating. The integral packing unit includes a housing for removably holding a sacrificial packing material that is configured to form a steam seal between a sootblower steam tube and lance spindle when the packing unit is installed in an operative position in association with the steam tube and the spindle and the packing material is loaded by applying compression to the packing material. A compression unit is typically coupled to the housing unit to apply such compression to load the packing material while the packing unit is installed in the operative position. The packing unit may also includes a detent mechanism, such set screws, for unloading the packing material to facilitate installing the packing unit on, and removing the packing unit from, the operative position.

Abstract: A multi-media rotating sootblower that includes multiple rotating and individually controlled cleaning fluid applicators, such a set of steam nozzles and two sets of water nozzles, and an automatic boiler cleaning system using these sootblowers. The boiler superheater typically includes a system of these sootblowers to clean a number of large platens that are arranged in rows. The boiler may also include additional boiler cleaning equipment, including water cannons to clean the furnace, and conventional steam sootblowers to clean other heat exchangers of the boiler. A number of sensors, including heat transfer gauges that measure the heat transfer at the furnace wall, strain gauges that measure the weight of slag deposits on platens, and boiler cameras are used to monitor slag accumulations within the boiler. A control system uses this sensor data to automatically operate the boiler cleaning system to implement an automatic boiler cleaning regimen.

Abstract: A soot-removal blower comprising , first, a lance (1) with nozzles (2) at the tip and with its base connected by way of a valve (9) to a supply of fluid and, second, a choke in path of the fluid. The choke is inside the lance in the vicinity of the nozzles.

Abstract: A soot blower for cleaning heating surfaces of a heat exchanger wherein a lance has jets at its front and is connected at its rear through a soot blower valve to a feed line for a blowing medium. The lance passes through a wall of the heat exchanger and is sealed by a wall casing where the lance passes into the heat exchanger. A connector is provided for a purging medium for the lance between the soot blower valve and the jets of the lance. There is also a connector for a sealing medium on the wall casing. A compressor generates and distributes purging medium and sealing medium for the soot blower connected to the respective connectors. A check valve between the soot blower valve and the purging medium connector prevents flow of blowing medium into the generating and distributing compressor.

Abstract: A soot blaster has a lance tube which is retractable and linearly movable. At least one of these movements can be interrupted by a time-delay relay when the tube reaches its frontmost operating position.