Patents Assigned to Alstom
  • Ultrasonic inspection probe carrier system for performing non-destructive testing
    Patent number: 8590383
    Abstract: An ultrasonic probe carrier includes a base, a first side arm having a first end thereof attached to the base and a second end thereof extending outwardly from the base on one side of a tube, and a second side arm having a first end thereof attached to the base and a second end thereof extending outwardly from the base on an opposite side of the tube, at least a portion of the first and second side arms being biased towards each other to removably secure the carrier around at least a portion of a circumference of the tube. An ultrasonic probe is attached to the base, and the carrier and ultrasonic probe are rotatable around the tube to scan at least one of: the circumference of the tube and a weld disposed around the circumference of the tube.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: November 26, 2013
    Assignee: ALSTOM Technology Ltd
    Inventors: Jacques L. Brignac, Robert E. Lucas
  • MIXING ELEMENT FOR GAS TURBINE UNITS WITH FLUE GAS RECIRCULATION
    Publication number: 20130305732
    Abstract: The invention pertains to fluegas recirculation in gas turbines, and specifically to an intake section upstream of the inlet of a compressor of a gas turbine unit with fluegas recirculation. The intake section includes at least one section with a flow path defined by sidewalls in which the fresh airflow of the intake air is flowing along a principal airflow direction, including at least one mixing duct extending into the flow path from at least one sidewall. The mixing duct includes an intake at the at least one sidewall for receiving recirculated fluegas, as well as including at least one outlet opening distanced from said sidewall for blowing recirculated fluegas out of the mixing duct into the airflow.
    Type: Application
    Filed: July 23, 2013
    Publication date: November 21, 2013
    Applicant: ALSTOM Technology Ltd
    Inventors: Eribert BENZ, Niclas Lars Olof Lindqvist, Ali Mustapha Tabikh, Lars Filip Lundin
  • ACTUATION CONTROL AND CONTROL METHOD, PARTICULARLY FOR ELECTRICAL DISCONNECTORS
    Publication number: 20130307439
    Abstract: An actuation control, for electrical disconnectors, including a device for driving the actuation motor of a movable element of an electrical disconnector, elements for detecting operating parameters of the disconnector, a device for processing the operating and control parameters of the driving device, elements for storing the operating parameters, which are connected to the processing and control device in order to receive from it and store the processed operating parameters, and interface elements of the actuation control, for its activation for opening or closing the disconnector.
    Type: Application
    Filed: February 4, 2011
    Publication date: November 21, 2013
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Vincenzo Girlando, Moreno Pivato, Eros Stella
  • PREVENTING TUBE FAILURE IN BOILERS
    Publication number: 20130306002
    Abstract: The erosion-prone sections of the tubes in a circulating fluidized bed boiler are provided with a locally thickened sidewall without forming discontinuities on the outer surface of the tubes. This can be accomplished, for example, by replacing the erosion prone portion of the tube with a section having a smaller inside diameter, but the same outside diameter, or by replacing the erosion prone portion of the tube with a section having a thicker sidewall, but the same inside diameter, and smoothing over the outside discontinuity with an alloy coating. A useful alloy coating is also disclosed which can be used for this and other applications.
    Type: Application
    Filed: July 26, 2013
    Publication date: November 21, 2013
    Applicant: ALSTOM Technology Ltd
    Inventor: Michael Walter SEITZ
  • ON-LOAD TAP CHANGER CONTROL METHOD FOR A POWER EXCITATION CHAIN, RELATED UNIT AND POWER EXCITATION CHAIN COMPRISING SUCH UNIT
    Publication number: 20130310993
    Abstract: The present invention relates to an on-load tap changer control method for a power excitation chain. The chain includes a generator, a step-up transformer equipped with an on-load tap changer and connected on the one hand to the output of said generator and on the other hand to a transmission bus, and an excitation control system comprising a generator automatic voltage regulator (AVRG) and at least one excitation limiter (OELG, UELG). The method includes monitoring the excitation conditions of the generator, activating said at least one excitation limiter (OELG, UELG) when the monitored excitation conditions are outside a predefined range, inhibiting temporarily the change of step of said on-load tape changer.
    Type: Application
    Filed: July 26, 2013
    Publication date: November 21, 2013
    Applicant: ALSTOM Technology Ltd
    Inventor: Carsten MEINECKE
  • BENT-OUT WALL IN THE REGION OF A SUBSTANTIALLY RECTANGULAR BURNER OPENING
    Publication number: 20130306003
    Abstract: Bent-out wall in the region of a substantially rectangular burner opening (2), wherein the bent-out wall (1) is formed by tube walls (3) and the tube walls (3) consist of tube-fin-tube combinations welded in a gastight manner and the tubes (5) thereof are flowed through by a cooling medium, wherein at least part of the bent-out wall (1) along the two longitudinal sides (7) of the rectangular burner opening (2) is formed by means of prefabricated tube wall segments (4) and wherein the prefabricated tube wall segments (4) are machine-welded in the planar state at the workshop and are subsequently bent at the workshop to a wall bending radius (R) of 70-140 mm and a wall bending angle (W) of 110°-150°.
    Type: Application
    Filed: September 30, 2011
    Publication date: November 21, 2013
    Applicant: ALSTOM TECHNOLOGY, LTD.
    Inventors: Jens Eschenhagen, Leonhard Leuthel
  • HIGH-TEMPERATURE STEAM TURBINE POWER PLANT WITH DOUBLE REHEAT
    Publication number: 20130305719
    Abstract: A steam power plant is described including on a single rotor at least one high pressure turbine or turbine section having a steam exit connected in operation to a first steam reheater and at least two intermediate pressure turbines or turbine sections with a first of the at least two intermediate pressure turbines or turbine sections having a steam exit connected in operation to a second steam reheater and with a second of the at least two intermediate pressure turbines or turbine sections having a steam entry to receive steam from the second steam reheater and a steam exit connected to one or more low pressure turbines or turbine sections, whereby the at least two intermediate pressure turbines or turbine sections are each separated into a high temperature turbine or turbine section and into a low temperature turbine or turbine section.
    Type: Application
    Filed: May 16, 2013
    Publication date: November 21, 2013
    Applicant: ALSTOM Technology Ltd
    Inventor: Martin Reigl
  • METHOD AND A DEVICE FOR TREATING EFFLUENT SEAWATER FROM A SEAWATER SCRUBBER
    Publication number: 20130306556
    Abstract: A gas cleaning system including a wet scrubber (14) for removal of sulphur dioxide from a gas and an oxidation basin system (42) for receiving effluent generated in the removal of sulphur dioxide from the process gas. The oxidation basin system (42) comprises an oxidation basin (43) for containing the effluent during treatment thereof, an oxygen supply system (47) for supplying oxygen to the effluent in the oxidation basin (43), and a contacting system for bringing the effluent into contact with an enzyme which catalyses the oxidation of bisulphite and/or sulphite ions.
    Type: Application
    Filed: February 2, 2012
    Publication date: November 21, 2013
    Applicant: ALSTOM TECHNOLOGY, LTD
    Inventors: Fredrik Jens Brogaard, Mikael Larsson
  • METHOD AND ARRANGEMENT FOR EXPANDING A GAS STREAM COMPRISING CARBON DIOXIDE
    Publication number: 20130305750
    Abstract: The present disclosure relates to a method and an arrangement for expanding a gas stream comprising carbon dioxide, CO2. The method includes: removing CO2 from a process gas to produce a CO2 lean gas stream comprising residual CO2; monitoring a temperature of the gas stream downstream of an expander; controlling a pressure of the gas stream downstream of the expander by means of a pressure controller; and overriding the pressure controller when the temperature downstream of the expander is below a predefined minimum temperature; whereby deposition of solid CO2 from the residual CO2 in the gas stream is avoided. The disclosure also relates to a gas cleaning system and a power plant, such as an oxy-combustion power plant, associated with the arrangement.
    Type: Application
    Filed: July 24, 2013
    Publication date: November 21, 2013
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventor: Olaf STALLMANN
  • Method for increasing the efficiency of a power plant which is equipped with a gas turbine, and power plant for carrying out the method
    Patent number: 8584465
    Abstract: In a power plant which is equipped with a gas turbine, fuel for the gas turbine is preheated by means of solar heat. The preheating is realized through the use of a heat transfer circuit. The use of an additional, second heat transfer circuit between the source for the solar heat and the first heat transfer circuit permits storage of the solar heat. The fuel preheating according to the invention permits in particular an increase in the efficiency of the power plant.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: November 19, 2013
    Assignee: Alstom Technology Ltd.
    Inventors: Richard Carroni, Burkhard Josuhn-Kadner
  • Leaf seal and method of producing a leaf seal
    Patent number: 8585058
    Abstract: A leaf seal for sealing a shaft rotating about an axis, in particular in a gas turbine, includes a multiplicity of spaced-apart leaves (26) which are arranged in a concentric circle around the axis and are fixed in their position by welded connections produced by electron beam welding, the leaves (26), with their surfaces, being oriented essentially parallel to the axis. The welded connections of the leaves are improved by the leaves (26) being designed in such a way and being arranged in the leaf seal in such a way that they abut against one another at the side edges directly or via intermediate spacers (27) along at least one contact line (36) extending over a plurality of leaves (26), and by the welded connections being designed as welds directed along the at least one contact line (36) and oriented in axial direction.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: November 19, 2013
    Assignee: ALSTOM Technology Ltd.
    Inventors: Nigel Anthony Rhodes, Ernst Vogt
  • METHOD FOR REDUCING REGENERATION ENERGY
    Publication number: 20130298763
    Abstract: A process and an apparatus are described, which remove acid gas from a gas stream in a manner that generates a product gas stream at a higher temperature while consuming less energy than the existing technology. The process requires maintaining a positive product gas temperature differential. The apparatus enables the positive gas temperature differential to be maintained by manipulating the absorber column operating conditions and/or the solvent chemistry to increase the amount of absorption and reaction in the absorber.
    Type: Application
    Filed: September 16, 2011
    Publication date: November 14, 2013
    Applicants: DOW GLOBAL TECHNOLOGIES LLC, ALSTOM TECHNOLOGY LTD
    Inventors: Frederic Vitse, Craig Norman Schubert
  • INJECTOR GRID WITH TWO STAGE MIXER
    Publication number: 20130298996
    Abstract: An injector mixer arrangement (10) for supplying a reducing agent in gaseous form into a flue gas flowing in a gas duct (14) communicating with a catalyst (18a) in a selective catalytic reduction (SCR) reactor (12) arranged downstream of said injector mixer arrangement (10). The injector mixer arrangement (10) comprises an injector grid (22) equipped with a plurality of nozzles (30) arranged horizontally within the gas duct (14). The nozzles (30) are adapted to supply said reducing agent to the gas duct (14). The injector mixer arrangement (10) further comprises first stage mixer plates (24) and second stage mixer plates (26) arranged in the gas duct (14) downstream of said nozzles (30) and upstream of SCR reactor 12.
    Type: Application
    Filed: March 26, 2013
    Publication date: November 14, 2013
    Applicant: ALSTOM Technology Ltd
    Inventors: Ali Mustapha Tabikh, Haitao Tu
  • COMPACT HIGH-POWER DIODE/THYRISTOR RECTIFIER ARCHITECTURE
    Publication number: 20130301320
    Abstract: A Graëtz-bridge converter-rectifier in which at least one rectifier arm situated between a single AC terminal and a single DC terminal includes multiple unidirectional electronic components connected in parallel and connected on one side to the DC terminal by means of a conductive component set and on the other side to the AC terminal. The invention is characterized in that the component set for at least one rectifier arm includes a plurality of separate component busbars each having at least one end connected to the DC terminal, the unidirectional components being divided between the component busbars into as many component sets connected in parallel as there are component busbars.
    Type: Application
    Filed: November 7, 2011
    Publication date: November 14, 2013
    Applicant: Alstom Technology Ltd.
    Inventors: Prithu Mariadassou, Joel Devautour
  • Electrical Equipment Comprising A Mobile Part Having Improved Dynamics
    Publication number: 20130299320
    Abstract: A locked state for a movable part (11) of switchgear is created by deflected spring wires (15) entering a recess (12). Said device is reversible and has the advantage of being safe since it is completely passive, and it improves the dynamics of the movement of the movable part in particular by damping impacts when entering the abutment state. The invention can be applied to the drive rod of a vacuum circuit-breaker.
    Type: Application
    Filed: February 2, 2012
    Publication date: November 14, 2013
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: David Berard, Jean-Pierre Dupraz
  • INTEGRATED GAS COOLING SYSTEM FOR ELECTRIC ARC FURNACE
    Publication number: 20130300038
    Abstract: A flue gas cooler 11 for cooling raw, hot flue gas from an electric arc furnace of an iron and steel production plant is provided. Each flue gas cooler 11 has a gas inlet chamber 14, a gas outlet chamber 16, and a matrix of gas cooling tubes 18 extending between and into the inlet chamber and the outlet chamber. Each gas cooling tube 18 has a bell-shaped inlet end 19 comprising an aerodynamically curved gas-accelerating profile effective to facilitate streamlined flow of flue gas into the gas cooling tube. The flue gas cooler makes it possible to receive flue gas directly from an electric arc furnace without getting clogged by dust and sublimates present in the flue gas.
    Type: Application
    Filed: March 22, 2013
    Publication date: November 14, 2013
    Applicant: ALSTOM Technology Ltd
    Inventors: Sivert Ose, Roberto ANTONINI
  • METHOD FOR ASSEMBLING SHELL SEGMENTS FOR FORMING TOWER SECTIONS OF A HYBRID WIND TURBINE TOWER
    Publication number: 20130298496
    Abstract: It comprises providing at least two metal shell segments arranged adjacent to each other, forming a column of concrete on at least a joint portion of adjacent shell segments, placing a formwork to form said column of concrete, assembling a support framework before providing shell segments, providing an auxiliary sub-structure internal to the shell segments, and an attaching formwork associated both with the internal support framework and to the shell segments. The assembling of the internal support framework may be carried out by providing at least a first series of auxiliary pillars, joining the auxiliary pillars to each other to form a first auxiliary sub-structure and arranging an attaching formwork attached to said auxiliary pillars.
    Type: Application
    Filed: January 23, 2012
    Publication date: November 14, 2013
    Applicant: ALSTOM RENOVABLES ESPAÑA, S.L.
    Inventors: Werner Uebbing, Alberto Gonzáles Del Egido, Núria García Gómez
  • Switchgear for a Vacuum Circuit Breaker Comprising Locking Means
    Publication number: 20130299321
    Abstract: The movable portion (35) of a vacuum circuit-breaker comprises a circular spring (46) sliding on an outer bearing surface (41) in most positions, that is suitable for entering a recess (40) on relaxing in order to define a maximally open position for the vacuum circuit-breaker in which locking is thus provided. The movable portion (35) may be made up of two sections (38, 39), of which one, made of copper, is a very good electrical conductor, and is directed towards the stationary contact (37) and receives a connection element for connection to an outside electrical circuit; the section (38) may be made of steel in order to promote sliding of the spring without wear.
    Type: Application
    Filed: February 2, 2012
    Publication date: November 14, 2013
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: David Berard, Jean-Pierre Dupraz
  • RECYCLED POT GAS POT DISTRIBUTION
    Publication number: 20130292258
    Abstract: An aluminium production electrolytic cell (14) comprises a bath (20) with bath contents (18), at least one cathode electrode (22) in contact with said contents (18), at least one anode electrode (16) in contact with said contents (18), and a hood (36), defining interior area (36a), covering at least a portion of said bath (20). The electrolytic cell (14) is equipped for effluent gases to be drawn from said interior area (36a). The electrolytic cell (14) also comprises at least one heat exchanger (74) for cooling at least a portion of the gases drawn from interior area (36a), prior to circulation thereof to interior area (36a) through at least one distribution device (90).
    Type: Application
    Filed: March 27, 2013
    Publication date: November 7, 2013
    Applicant: ALSTOM Technology Ltd
    Inventors: Geir Wedde, Odd E. Bjarno, Anders K. Sorhuus
  • DEVICE COMPRISING AN ELECTRONIC COMPONENT WITH HIGH SWITCHING SPEED
    Publication number: 20130293002
    Abstract: An electrical switching device includes at least two electronic components, with a control circuit designed to control the or each component. Each component is connected to the control circuit by a respective connection, and each component has a switching speed that is higher than 10 kA/?s or higher than 20 kV/?s and wherein the or each connection has an inductance that is lower than 10 nH.
    Type: Application
    Filed: May 1, 2013
    Publication date: November 7, 2013
    Applicant: Alstom Transport SA
    Inventors: Johnny BOU SAADA, Fisal AL KAYAL