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| Number | Title | Issue Date |
| RE38542 | Upper bundle steam generator cleaning system and method An upper bundle steam generator cleaning system including a cleaning head deployment and support device receivable through a hand hole of the steam generator and including retractable cylinders which raise the cleaning head up through the flow slots to position a cl... | 07/06/2004 |
| 6681839 | Heat exchanger exchange-tube cleaning lance positioning system A heat exchanger exchange-tube cleaning lance positioning system that includes a three axis cleaning lance positioning mechanism that is attachable to the end of a heat exchanger and that is controlled by a lance position computer controller that determin... | 01/27/2004 |
| 6073641 | Drive system for a water lance blower with a housing for blocking and flushing medium and a method for its operation A water lance blower for cleaning heating installations, wherein a water lance (6) is movably (5) arranged with its mouth on or in a hatch (2) and can blow a water jet through the heating installation, which is in operation and is flowed through with flam... | 06/13/2000 |
| 5813370 | Steam generator lancing system A steam generator lancing system for cleaning tubes and tubesheets of a steam generator. The lancing system includes a nozzle block including at least one nozzle adapted for fluid communication with a high pressure hose. The lancing system also includes a... | 09/29/1998 |
| 5765510 | Retractable, sealed sootblower for high pressure, high temperature applications A retractable sootblower for avoiding and dislodging accumulated soot and ash. The sootblower includes an elongate housing and a blowing tube or blowing tube assembly reciprocable in the housing. The blowing tube is extended and retracted by pressurized g... | 06/16/1998 |
| 5605117 | Articulating sootblower A sootblower for cleaning heat exchanger surfaces in a boiler. The sootblower includes a carriage assembly supported by a frame and adapted to cause translational and rotational movement of a lance tube to insert and retract the lance tube into and out of... | 02/25/1997 |
| 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 |
| 5564371 | Upper bundle steam generator cleaning system and method An upper bundle steam generator cleaning system including a cleaning head deployment and support device receivable through a hand hole of the steam generator and including retractable cylinders which raise the cleaning head up through the flow slots to po... | 10/15/1996 |
| 5560323 | One directional rotational lance indexer A boiler cleaning device includes a frame mounting a carriage for moving a lance in and out of a boiler along said frame. The carriage is moved by a drive-chain which passes through a differentially geared set of sprockets, one of which carries a pinion r... | 10/01/1996 |
| 5553778 | Advanced sootblower nozzle design A nozzle suitable for use with a device for removal of deposits from contaminated surfaces, such as a sootblower in a heat recovery boiler, is designed to avoid normal shock wave formation, and hence energy dissipation, by achieving a condition whereby, t... | 09/10/1996 |
| 5320072 | Apparatus for removing sludge deposits An apparatus for removing sludge from the tubes and tubesheet of a steam generator. A support structure is adapted to be mounted at an access port of a steam generator. A lance tube extends from the support structure into the steam generator. A spool atta... | 06/14/1994 |
| 5307866 | Apparatus for cleaning the inside of pipes in a heat exchanger An apparatus for cleaning the inside of pipes in a heat exchanger is disclosed, which includes an aggregate having the provision of high-pressurized water and, at least, one hose leading from said aggregate for directing the high-pressurized water. The ho... | 05/03/1994 |
| 5305713 | Angular rotation rotary cleaning device An improved rotary cleaning device for removing slag deposits from the surfaces of pendant tubes in a steam generator boiler is characterized by a controlled rotary actuator mechanism which alternately rotates a cleaning lance in opposite directions throu... | 04/26/1994 |
| 5279357 | Coil cleansing assembly A coil cleansing assembly for automated cleaning of dirt and debris from within banks of heat exchanger coils is disclosed. The cleansing assembly is mounted above, below and between banks of such coils to enable focused jets of high velocity spray to imp... | 01/18/1994 |
| 5265671 | Apparatus for mechanically projecting devices through tubes An apparatus is disclosed for projecting a stiffly flexible conduit or cable through a bore of a tube to be cleaned, surveyed or otherwise processed, said apparatus comprising a drum enabling the conduit or cable to be stored therein in a plurality of wou... | 11/30/1993 |
| 5129455 | Multi-lance tube cleaning system having flexible portions An improved multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume fl... | 07/14/1992 |
| 5099911 | Apparatus for mechanically projecting devices through tubes An apparatus is disclosed for projecting a stiffly flexible conduit or cable through a bore of a tube to be cleaned, surveyed or otherwise processed, said apparatus comprising a drum enabling the conduit or cable to be stored therein in a plurality of wou... | 03/31/1992 |
| 5067558 | Multi-lance tube cleaning system A multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume fluid source... | 11/26/1991 |
| 5022463 | Multi-hose flexible lance tube cleaning system A multi-hose flexible lance tube cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a spool and means for rotating the spool. A plurality of tubular flexible lances are reeled on the spool assembly. Each flexible la... | 06/11/1991 |
| 5002120 | Multi-lance tube cleaning system A multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume fluid source... | 03/26/1991 |
| 4907542 | Cleaning system for a horizontal type tube assembly An improved cleaning system for a horizontal type tube assembly which can achieve cleaning of the outer surfaces of the tubes in the tube assembly automatically by remote control without necessitating human labor of workers who are compelled to work in a ... | 03/13/1990 |
| 4806172 | Method and apparatus for removing substances adhering to surface A method for removing substances adhering to a surface such as a wall of buildings in which a nozzle head having a plurality of nozzles is rotated eccentrically and moved sidewardly when used. The diameter of each of the nozzles is selected so as to be wi... | 02/21/1989 |
| 4766952 | Waste heat recovery apparatus A waste heat recovery apparatus comprising a high-temperature unit including a high-temperature casing having an inlet through which an exhaust gas is introduced into the unit and an outlet through which the exhaust gas is discharged from the unit, a set ... | 08/30/1988 |
| 4756769 | Method for cleaning with high pressure an evaporator and device used thereby The spaces into which the vessel is divided by means of horizontal perforated partions are successively cleaned from top to bottom. Firstly the uppermost space is cleaned: the cover of the access to the space is removed, through the access a high-pressure... | 07/12/1988 |
| 4565206 | Apparatus for cleaning a steam generator by means of a high-pressure lance The high-pressure lance is shiftably mounted in a bearing bush which is swingably mounted in a base which is to be secured over an opening in the wall of the steam generator. On the base are mounted a revolving cylinder which can swing the bearing bush to... | 01/21/1986 |
| 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 |
