Abstract: The present invention relates to the field of fossil fuel combustion arrangement. It relates in particular to a fuel distribution assembly for equal and homogenous pulverized fuel distribution in pulverized fuel conduits throughout. It also relates to a system for providing an equal and homogenous pulverized fuel distribution.

Abstract: A gas-insulated substation having an enclosure filled with dielectric gas under pressure, comprising one electrical conductor (1) designed to be live that is of longitudinal axis (X) and placed inside the enclosure (6), and two grading shields (10, 12) surrounding in part the conductor (1), at least one of the grading shields (10) comprising a hollow electrically conductive body (14) of longitudinal axis that is substantially coaxial with the axis of the casing (6), said body (14) comprising an annular depression (22) in its outer surface and orifices (26) passing through said body (14) made in a bottom of said annular depression. Said orifices (26) ensure that the dielectric gas flows between an inside zone and a zone that is outside the grading shield (10) by convection exchange.

Abstract: An air quality control system (AQCS) useful for processing a gas stream, such as a flue gas stream emitted from a fossil fuel fired boiler, for at least partial removal of acidic and like pollutants therefrom. The air quality control system includes a CDS reactor useful using a reducing agent slurry.

Abstract: A burner for a combustion chamber of a turbine, with an injection device for the introduction of at least one gaseous and/or liquid fuel into the burner is proposed. The injection device has at least one body arranged in the burner with at least two nozzles for introducing the at least one fuel into the burner, the body being configured with a streamlined cross-sectional profile which extends with a longitudinal direction perpendicularly or at an inclination to a main flow direction prevailing in the burner. The carrier air plenum is provided with holes such that carrier air exiting through the holes impinges an inner side of a leading edge portion of the body.

Abstract: A gas turbine engine component having an axial pin stop assembly that reduces stress around a seal pin damper slot between a platform and a buttress is disclosed. The seal pin damper slot is extended to the leading edge of the buttress and an axial pin stop seal extends into the pin damper slot to limit movement of the seal pin damper while relieving stress concentration at the interface between the buttress and platform.

Abstract: A compressor component having a non-linear thickness distribution along the span length is disclosed. By altering the thickness distribution to a non-linear arrangement so as to locally increase airfoil thickness proximate a mid-span location, the natural frequency of the airfoil is increased so as to not coincide with a critical engine order of the compressor. Further, the present invention provides a novel airfoil profile in accordance with the coordinates of Table 1. The present invention also includes a carrier segment or disk fabricated from a material so as to eliminate corrosion with the compressor component.

Abstract: Disclosed herein is a shape optimized header comprising a shell that is operative for collecting a fluid; wherein an internal diameter and/or a wall thickness of the shell vary with a change in pressure and/or a change in a fluid flow rate in the shell; and tubes; wherein the tubes are in communication with the shell and are operative to transfer fluid into the shell. Disclosed herein is a method comprising fixedly attaching tubes to a shell; wherein the shell is operative for collecting a fluid; wherein an internal diameter and/or a wall thickness of the shell vary with a change in pressure and/or a change in a fluid flow rate in the shell; and wherein the tubes are in communication with the shell and are operative to transfer fluid into the shell.

Abstract: An axial flow turbine diaphragm is constructed without welding or other metal fusion or melting techniques. Static blade units are attached to inner and outer diaphragm rings by radially inner platform portions that engage the radially inner ring, and radially outer platform portion s that engage the radially outer ring, the inner platform portions being elongate in the circumferential direction of the turbine diaphragm and the outer platform portions being elongate in a direction compatible with the stagger angle of the aerofoils. The outer circumference of the radially inner ring has a blade unit retaining feature of complementary shape and orientation to the inner platform portions of the static blade units, and the inner circumference of the radially outer ring is provided with a plurality of blade unit retaining features of complementary shape and orientation to corresponding outer platform portions of the static blade units.

Abstract: A rotating electric machine includes a rotor configured to rotate about an axis. The rotor includes a rotor laminate stack having layered laminations pressed in an axial direction to form a composite, the rotor laminate stack being radially divided into an inner mechanical region and an outer electrical region. A rotor winding is disposed in the electrical region of the rotor laminate stack. A stator concentrically surrounds the rotor. A press plate is configured to press the layered laminations in the axial direction, the press plate being radially divided into a separate inner press plate and a separate outer press plate so as to correspond to the radial division of the rotor laminate stack.

Abstract: In a method for influencing, in particular damping or suppressing, mechanical vibrations occurring during operation in a turbomachine blade (10), the mechanical vibratory energy of the turbomachine blade (10) is first converted into electrical energy and the electrical energy generated is then converted into heat loss. Effective damping which can be used especially simply and in a versatile way is achieved in that the piezoelectric effect is used in order to convert mechanical vibratory energy into electrical energy.

Abstract: An injection nozzle (10), especially for injecting liquid fuel, preferably crude oil, into the combustion chamber of a gas turbine, includes an inner chamber (16) which extends along a nozzle axis (19), conically tapers to a concentric nozzle orifice (17), and to which the medium which is to be injected is fed from outside through a plurality of inlet ports (18) which are arranged in a distributed manner around the nozzle axis (19). The inlet ports (18) are oriented perpendicularly to the nozzle axis (19) and each lead tangentially into the inner chamber (16). With such an injection nozzle, an improved spray cone is achieved by the fact that a pin (14), which extends in the axial direction, is concentrically arranged in the inner chamber (16) and passes through the region of the mouths of the inlet ports (18) and extends right into the nozzle orifice (17).

Abstract: A method is provided for determining a control scheme for a voltage source converter (VSC) with a topology of three bridge legs between each of three phases of a grid and a neutral point. The method includes: analyzing the waveform of the grid and/or a load voltage and determining an allowed period for no-swilching of the corresponding bridge leg; operating the VSC with different clamping carrier modulator frequencies, and then analyzing the balance in the operating junction temperatures and/or power losses across the active switches and also analyzing the total losses of the VSC; comparing the balance and the total losses of different clamping carrier modulator frequencies and selecting the clamping carrier modulator frequency; operating the VSC with the selected clamping carrier modulator frequency, and optimizing the balance in the operating junction temperatures and/or power losses across the active switches and the total losses of the VSC.

Abstract: A solar power system, comprising a solar receiver that absorbs solar radiation, at least first and second fluid flow paths passing through the receiver, a first working fluid flowable through the first fluid flow path to absorb thermal energy from the receiver up to a first maximum temperature and a second working fluid flowable through the second fluid path to absorb thermal energy from the receiver up to a second maximum temperature.

Abstract: A power electronic converter for use in high voltage direct current power transmission and reactive power compensation includes at least one converter limb, which includes first and second DC terminals and an AC terminal. Each converter limb defines first and second limb portions connected in series between the AC terminal and a respective one of the first and second DC terminals. Each limb portion includes a chain-link converter connected in series with at least one primary switching element. Each chain-link converter includes a plurality of modules connected in series, and each module includes at least one secondary switching element connected to at least one energy storage device. Each primary switching element in each limb portion of a respective converter limb selectively defines a circulation path which carries a DC circulation current to regulate the energy level of at least one energy storage device in a respective chain-link converter.

Abstract: A rectifier transformer including at least one secondary with windings, one pair of magnetic transductors per winding, one of the transductors having one or more first busbars and the other having one or more second busbars. All of the busbars of the pair of transductors are connected to the same winding. The or each first or second, busbar is connected to a single positive or negative, terminal (2w+) designed to be connected to a positive or negative, arm of the rectifier. All of the busbars of the pair of magnetic transductors form one or more groups that are encircled by at least one magnetic toroid and that comprise at least one first busbar and at least one second busbar, so that, when the terminals are short-circuited, the busbars of a group pass currents of opposite directions such that the sum of the currents in one direction is equal to the sum of the currents in the other direction.

Abstract: Methods for controlling a gas turbine engine are provided, where a compressor inlet temperature, ambient temperature, and relative humidity are measured. Utilizing these measurements, it is first determined whether an evaporation cooler is actively importing water content into inlet air entering the compressor. This determination is based on whether the inlet air is substantially cooler than the ambient temperature. If so, an EC correction factor is added to an inlet air temperature value (CTIM) and set as an air temperature parameter (INLETIM). Second, it is determined whether the relative humidity is greater than a predefined threshold. If so, a relative humidity (RH) correction factor is added to CTIM and set as the INLETIM. Next, the INLETIM and TTRF are located in a look-up table, and a bias value corresponding to these inputs is identified. The fuel-flow for a fuel circuit is adjusted according to the identified bias value.

Abstract: A dual brazing alloy element for a materially integral connection of a ceramic surface to a metallic surface includes a first layer having a Ni-based brazing alloy with a Ni content of at least 50% by weight and having at least one component configured to lower a melting point of the Ni-based brazing alloy selected from the group consisting of Si, B, Mn, Sn and Ge. A second layer includes an active brazing alloy material having a total content of 1-15% by weight of at least one active element selected from the group consisting of Ti, Hf, Zr and V.

Abstract: An installation for combustion (1) of carbon-containing solids includes an oxide reducing reactor (2), a first cyclone (5), a recuperator (6), an oxidation reactor (3), a second cyclone (4), wherein flows an oxide which is reduced then oxidized in each of the two reactors (2 and 3). In the installation, the fuel is ground before being introduced into the reduction reactor (3). The reduced size of the solid fuel particles enables more complete and faster combustion and enables almost 100% production of fly ashes which are separated from the circulating oxides.

Abstract: A hot solids process selectively operable for purposes of generating at least one predetermined output based on what the specific nature of the primary purpose of the hot solids process is for which the at least one predetermined output that is selected from a multiplicity of predetermined outputs, such as H2 and CO2, is being produced, and wherein such primary purpose of the hot solids process is designed to be pre-selected from a group of primary purposes of the hot solids process that includes at least two of the generation of H2 for electric power purposes, the generation of SynGas for electric power production as well as for other industrial uses, the production of steam for electric power generation as well as for other uses, the production of process heat, the production of CO2 for agricultural purposes, and the generation of a feedstock such as H2 for use for the production of liquid hydrocarbons.

Abstract: A turbomachine with at least one combustion chamber and at least one turbine which lies downstream of it. The turbine has at least one support element and a lining element connected to the support element and formed as a heat shield. A gap sealed by means of a seal, is formed between the at least one combustion chamber and the turbine, an exchangeable insert is arranged in the gap on the end face on the support element and protects at least the support element against hot gases which penetrate into the gap, and against oxidation which is associated with it.