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| Number | Title | Issue Date |
| 8151460 | Heat exchanger deep bundle air extractor and method for modifying Disclosed is a method for effective venting of a condenser of the type having an air removal section, wherein improved is reducing dissolved oxygen or other gases content in the condensate, reducing condensate and feed water side corrosion, reducing excess condenser... | 04/10/2012 |
| 8020297 | Method for disassembling boiler A method for disassembling a boiler supported and suspended by a supporting structure which includes the steps of cutting off a lower part of a furnace unit to provide an enlarged opening; fixing a first support to the furnace unit at approximately same height as a ... | 09/20/2011 |
| 7905017 | Method for repairing guide rails of an assembly radially maintaining a support plate of a pressurized water nuclear reactor core The invention concerns a method for repairing guide rails (27) of an assembly (10) radially maintaining a core supporting plate (5), which consists in measuring the spacing between the spans of the lateral branches of the guide rail (27) ... | 03/15/2011 |
| 7827689 | Coke oven reconstruction A new, faster and more efficient process to replace heating walls and ceilings in coke oven batteries. Thus, when replaced, at least one heating wall is constructed of thermally stable non-expanding large size modular cast modules from end to end and the ceiling adj... | 11/09/2010 |
| 7685715 | Methods for processing the contents of containers and tanks and methods for modifying the processing capabilities of tanks and containers A method for modifying the processing capabilities of a container. The method includes providing a container that defines a cavity and comprises a wall. The wall defines at least a portion of the cavity and has thermal energy transfer characteristics. At least one o... | 03/30/2010 |
| 7653997 | Friction linear guide rail assembly for boiler tube cutting apparatus The present invention relates to a guide rail assembly for securement of a tube cutting apparatus for cutting of boiler tube walls to a fixed point on a tube wall, while allowing lateral repositioning of a cutting tool relative to the tube wall. The assembly include... | 02/02/2010 |
| 7617603 | Method for inspection and repair A method for the inspection and repair of a tube includes electrical discharge machining an access hole into the tube, optionally at or near the uppermost location on the tube, near the upper header; performing inspection of the tube, optionally using a visual or an... | 11/17/2009 |
| 7441332 | Method for restoring performance capabilities of exhaust gas treatment apparatus To provide a method for recovering performance of a discharge gas processing apparatus, the method being capable of recovering NOx removal performance of a deteriorated NOx removal catalyst without replacing the deteriorated NOx remo... | 10/28/2008 |
| 7360591 | System for radially expanding a tubular member A system for radially expanding a tubular member. ... | 04/22/2008 |
| 7328509 | Method of operating a weaving mechanism to insert a spacer between the tubes of a heat exchanger A weaving apparatus used to separate the tubes of a heat exchanger so that spacers that hold the tubes apart can be inserted between the tubes to increase thermal efficiency. The weaving apparatus includes a frame assembly and a weaving mechanism contained within th... | 02/12/2008 |
| 7322090 | Explosive tube removal device A explosive device is disclosed for collapsing an expansion-fit metal tube from within a hole of a metal plate of a boiler or the like. The device includes a connecting rod inserted into the tube and extending outwardly from top and bottom ends of the tube. The port... | 01/29/2008 |
| 7314343 | Miniature manipulator for servicing the interior of nuclear steam generator tubes A manipulator for servicing tubes extending through a tube sheet having three major components: a base member, a block member, and a foot member. The base member has a holder for supporting tooling or inspection devices. The base member also has at least one gripper... | 01/01/2008 |
| 7310877 | Method of producing sensors for monitoring corrosion of heat-exchanger tubes The present invention relates to a method of producing the sensors for monitoring corrosion of heat exchanger tubes in a thermal power plant. The sensor is made of the tubes taken out from actual heat-exchanger. As a result, the sensor not only has the same material... | 12/25/2007 |
| 7305756 | Tube extracting device The invention is related to a tube extracting device for compressing a tube end extended from a conventional drum of a boiler to remove the tube. The device includes a housing comprised of an outer clamping plate and an inner clamping plate pivotally connected by a ... | 12/11/2007 |
| 7305746 | System for removing heat transfer fins from, and beveling the ends of, boiler tubes A system is disclosed to use a first rotary milling head to break or cut the bond of a heat transfer fin base to a boiler tube, thereby removing the heat transfer fins from the boiler tube, and a second rotary milling head to bevel the exposed end of the boiler tube... | 12/11/2007 |
| 7272204 | Method and apparatus for clamping a riser brace assembly in nuclear reactor An apparatus and method are provided which are designed to structurally replace welds that attach a riser brace assembly to a jet pump riser pipe. The riser brace assembly may include an upper clamp assembly, a lower clamp assembly, and a plurality of mechanical fas... | 09/18/2007 |
| 7252138 | Flow through tube plug A method and apparatus for the repair of damaged tubes, such as heat exchanger tubes, comprising inserting a flow through plug into the damaged heat exchanger tube. The flow through plug is tapered and creates a press fit when inserted within the heat exchanger tube... | 08/07/2007 |
| 7231714 | Corrosion-resistant exterior alloy for composite tubes An austenitic Ni—Cr—Fe alloy is provided as an exterior tube material for improved cracking and corrosion resistance of composite tubes used to construct the lower furnace section of kraft recovery boilers. The alloy consists of essentially, on a weight-% basis,... | 06/19/2007 |
| 7194800 | Internal tube extracting device with a cylindrical collapsing wedge The invention is related to a tube extracting device for removing a tube from a conventional drum of a boiler or heat exchanger. The device is positioned inside the drum. The device includes a hollow cylindrical wedge which cylindrically collapses a tube inwardly up... | 03/27/2007 |
| 7176703 | Test probe with thermally activated grip and release An electrical test probe has a thermally activated, configurable shape probe tip. At low temperatures, the probe tip is in a generally hooked configuration. Upon heating, the probe tip is converted to a generally straight configuration. The probe tip is composed of ... | 02/13/2007 |
| 7117584 | Heat exchanger tube expanding apparatus A tube expanding apparatus includes mandrels, each mandrel having a billet on a leading end; a reciprocating actuator for supporting rear ends of the mandrels, the reciprocating actuator being supported to reciprocate in an axial direction of hairpin tube straight p... | 10/10/2006 |
| 7111645 | Method and apparatus for sealing high pressure tubes A plug for sealing high pressure tubes is made from a memory-shape alloy. The plug is formed having a diameter greater than the inner diameter of the tube and is shaped by cooling to its martensite finish temperature and bending its wings in opposing directions such... | 09/26/2006 |
| 7096699 | Multiple bladder internal tube expansion and method Method and apparatus for the production of a plurality of uniform expansions of a tube in a plurality of tube supports simultaneously. A plurality of tubes are expanded in apertures of tube supports in a repetitive manner, each tube being expanded into the plurality... | 08/29/2006 |
| 7093360 | Method of removing boiler tubes Boiler tubes are removed from a boiler vessel without damaging the vessel by severing the boiler tube near the exterior periphery of the vessel, and using a piloted rotary cutting tool fixtured with respect to the longitudinal axis of the severed boiler tube to remo... | 08/22/2006 |
| 7047613 | Blade assembly for double end nibbler tool A blade or punch assembly for double-ended nibbler tools which affords easier removal by in part providing a blade having central portions of a single diameter equal to or slightly less than the composite bore through which it is adapted to extend. ... | 05/23/2006 |
| 7022165 | Tubular hydrogen permeable metal foil membrane and method of fabrication A tubular hydrogen permeable metal membrane and fabrication process comprises obtaining a metal alloy foil having two surfaces, coating the surfaces with a metal or metal alloy catalytic layer to produce a hydrogen permeable metal membrane, sizing the membrane into ... | 04/04/2006 |
| 6964305 | Cup seal expansion tool In one variation, a tool is disclosed that can run cladding into casing where the cladding interior is closed off by opposed cup seals and access to the volume between the cup seals exists through the tool body. “Cladding” comprises sleeves, scrolls, casing, tub... | 11/15/2005 |
| 6910618 | Method for preparing pipe for butt welding A steel pipe is welded to a threaded connector that has an end with a desired nominal inner diameter. A swage is forced over an end of the pipe, reducing an outer diameter and an initial inner diameter of the end of the pipe. A die is then forced into the end of the... | 06/28/2005 |
| 6907652 | Pipe connecting method A method of connecting a first pipe to a second pipe having an end part fitting into an end part of the first pipe, comprising arranging the end part of the second pipe within the end part of the first pipe, arranging a sleeve of a deformable material between said e... | 06/21/2005 |
| 6836947 | Method of dismantling air conditioner Using a cutting device (10) including a rotor (11) with a principal plane, a spindle (13) provided in a normal direction to the principal plane and at least one impacting body (100) mounted on the spindle rotatably, in which the impacting... | 01/04/2005 |
| 6742256 | Method and apparatus for flexible construction of heat exchanger tanks Heat exchanger header tanks are constructed from a basic set of components. The basic components are castings and simple formed sheet parts. The components are assembled to produce a heat exchanger tank having a desired size and geometry. ... | 06/01/2004 |
| 6732425 | Heat exchanger sleeve end expander apparatus An apparatus is disclosed for expanding the ends of a sleeve that has previously been installed into a defective section of inaccessibly located soft metal heat exchanger tubing. The sleeve ends are expanded using an apparatus of a plastic bladder connected to a ser... | 05/11/2004 |
| 6725517 | Method for plugging a hole and a cooling element manufactured by said method A method for plugging a hole, particularly a hole provided in a cooling element, in which method a hole formed in a piece essentially made of mainly copper, for instance in the housing element of a cooling element, there is arranged a plug mainly made of copper. Bet... | 04/27/2004 |
| 6647622 | Repairing an engine cooling system A method of repairing a coolant system associated with an engine for a vehicle, including disconnecting a gooseneck connected to the engine and removing from the engine its thermostat; disconnecting a bottom radiator hose connected to the engine and flush... | 11/18/2003 |
| 6637110 | Pipe joining method using shape memory alloy For a pipe joining method using shape memory alloy capable of preventing a shape memory capacity loss due to a pipe's tolerance, a shape memory alloy joint having an inner diameter greater/less than an outer diameter of pipes to be joined is installed at ... | 10/28/2003 |
| 6620274 | Method of repairing aluminum heat exchanger A partly damaged aluminum heat exchanger such as an aluminum radiator is repaired by closing a hole in the damaged portion with an acrylic resin adhesive material. A certain area around the damaged portion is pressed down to form a cup-shaped depressed po... | 09/16/2003 |
| 6596957 | Method and apparatus and prefabricated replacement tube for localized waterwall repair A method, an apparatus (150), and a prefabricated replacement tube (108) are provided for repairing a defect (112) in a tube (102), such as in a waterwall (100). In the method, a replacement tube (108) is prefabricated having a wall (116), a central openi... | 07/22/2003 |
| 6450480 | Bake carbon flue straightener The present invention provides a bake carbon flue straightener for straightening a flue wall of an anode baking surface from a deformed or bowed position to a straight or normal position. The flue straightener includes a plurality of remotely controlled a... | 09/17/2002 |
| 6434824 | Process for making a fluid-tight connection between a tube and a plate-shaped part A process for making a fluid-tight connection between a tube and a plate-shaped member. The process entails inserting one end of a tube into a correspondingly-sized hole in a plate-shaped member so that the tube end contacts the plate-shaped member and ex... | 08/20/2002 |
| 6421916 | Method for the removal of rib plugs using a spiral TIG welding technique to relax the rib plug A method of removing rib plugs from steam generator tubes in energy producing units such as nuclear reactors includes the removal of the expander element or mandrel from the expanded part of the rib plug, TIG welding a bead on the available internal surfa... | 07/23/2002 |
