Abstract: The invention relates to a single shaft combined cycle power plant having: a shaft on which is sequentially located, a gas turbine, a medium pressure steam turbine, a low pressure steam turbine, a generator, and a high pressure steam turbine.

Abstract: The invention relates to a groove cutting tool having: a body and a holder wherein the holder is slidably mounted in the body. The holder has a first end at which a blade is mounted and a second end, distal in a slidable direction of the holder, from the first end. A drive pinion, located towards the second end, is configured to be in rotational communication with the blade.

Abstract: An apparatus is mountable to a duct having a cross-section, for determining parameters of a flowable medium flowing through the duct. The apparatus includes a mounting attachment having a conduit member, and at least one combination of multiple sensing members configured to the conduit member. The conduit member may be disposed entirely within the duct such that the multiple sensing members are located within the duct establishing direct contact with the flowable medium. The multiple sensing members include oxygen and temperature sensing elements respectively, to determine parameter such as oxygen level in the flowable medium, and temperature of the flowable medium. Several such apparatus may be mounted in the duct across the cross-section to define a grid to determine said parameter at various locations across the cross-section.

Abstract: A flow control grid includes a plurality of channel assemblies connected to one another. Each of the plurality of channel assemblies defines a flow straightening section and a flow turning section. The flow turning section has an arcuate segment and a first substantially flat segment. The first substantially flat segment is positioned in the flow straightening section. The arcuate segment extends outwardly from the flow straightening section.

Abstract: A spray dryer disperser 24, 26, 28, 30 is described for use in a spray dryer absorption (SDA) system 18 for flue gas FG impurity reduction. As such, the spray dryer disperser 24, 26, 28, 30 disperses absorbent liquid or reagent slurry droplets into contact with a hot flue gas FG stream containing gaseous impurities to produce a flue gas FG stream of reduced impurity content and dry powder end products EP. The spray dryer disperser 24, 26, 28, 30 is useful in larger capacity SDA vessels 22 of approximately 12 to 22 meters in diameter or larger, to avoid disperser 24, 26, 28, 30 shroud 34a scale deposits, to avoid reagent slurry spray cloud suppression, to avoid vessel 22 wall 22b scale deposits and to achieve increased droplet rotational momentum for increased droplet flue gas FG penetration for efficient impurity reduction.

Abstract: A method of locating a partial discharge emission zone and to the associated device. The method is characterized in that it comprises a step of measuring partial discharge signals by means of four identical measurement channels each including a VHF and/or UHF detector, the four VHF and/or UHF detectors being positioned at the four vertices of a square or rectangle in such a manner that the partial discharge emission zone is determined inside the square or rectangle.

Abstract: An air flow control arrangement for a pulverizer includes an inner ring segment, an outer ring segment, a plurality of vanes, and a plurality of vanes. The inner and outer ring segments are adaptably configured in a spaced relation to each other. Further, the plurality of vanes is spaced apartly arranged between the inner and outer ring segments to form flow ducts. Furthermore, each wingtip of the plurality of wingtip is detachably attached to a respective vane of the plurality of vanes to be adaptably replaceable or changeable.

Abstract: A steam power plant is suggested having, parallel to the low-pressure passage (VW1 to VW2), a heat reservoir (A) which is loaded with preheated condensate in weak-load times. This preheated condensate is taken from the heat reservoir (A) for generating peak-load and inserted downstream of the low-pressure preheater passage (VW1 to VW2) into the condensate line that contacts the feed water container (8). Thus it is possible to quickly control the power generation of the power plant in a wide range without significantly having to change the heating output of the boiler of the steam generator (1). A steam power plant equipped according to the invention can thus be operated with bigger load modifications and also provide more control energy.

Abstract: The invention relates to a sealing system for sealing between a first component and a second component wherein at least one or either the first component or the second component is a rotating component. The first component has a circumferential groove in which a sealing segment has first and fifth end portions adjacent the groove and second, third and fourth portions that form a U shape that mirrors the shape of and extends into the circumferential groove.

Abstract: The invention relates to a conductor for electrical equipment, including at least two electrically-conductive material support elements spaced apart from each other along a longitudinal axis (Y) and at least four electrically-conductive material structural sections elongate along the longitudinal axis (Y), curved transversely to the longitudinal axis, and supported by the support elements; wherein the support elements further hold apart in pairs the at least four curved structural sections, the separation maintained between two curved structural sections of a pair defining an open area extending transversely to the longitudinal axis and at least between the support elements, said open area reducing in size progressively and continuously. This conductor may advantageously form a movable contact (blade) of a high-voltage disconnector.

Abstract: A first unit configured to generate and transmit a code of positive and negative DC pulses through a first rail of a railway. A second unit spaced from the first unit and configured to sense the code, which includes a leading code word, having a positive or negative timing pulse followed after a first data interval by a positive or negative data pulse, followed by a modifying code word. The modifying code word consists of a second positive or negative timing pulse followed after a second data interval by a second positive or negative data pulse. The second timing pulse starts after one code cycle from the start of the leading code word timing pulse. The second timing pulse and the second data pulse duplicate the timing pulse and the data pulse of the same polarity, but invert the timing pulse and the data pulse of opposite polarities.

Abstract: A fuel nozzle assembly including a conduit defining a fuel inlet and a fuel outlet and being operable to convey a fuel stream comprising a solid particulate fuel entrained in a fluid. The conduit has a flow area defined by an interior surface of the conduit. A first flow deflector and a second flow deflector extend inwardly from the interior surface. The first flow deflector and the second flow deflector are positioned to disrupt a velocity profile of the flow stream established upstream of the conduit.

Abstract: A method of controlling a current breaking device in a high-voltage electricity network is disclosed. In one aspect, the method includes, for each phase (A, B, C), obtaining missing supply voltages from an acquired supply voltage, performing healthy phase/faulty phase discrimination, conducting voltage analysis by attempted matching of a model over a signal window, choosing a strategy of simple closing or reclosing of the breaking device as a function of choice conditions, calculating a set of optimum reclosing times for each phase in accordance with the chosen strategy, and selecting an optimum time from the proposed optimum times and closing the phases of the current breaking device.

Abstract: A device for regulating the supply to a photovoltaic converter, the device comprising: a laser source (2); a photovoltaic converter (6) that feeds a DC-DC converter (8); circuit (100) for regulating the input impedance of said DC-DC converter (8) as a function of the operating voltage (Us) of the photovoltaic converter (6) and of its no-load voltage (Us0); and circuit (42) for measuring an output voltage of the DC-DC converter (8) and for producing a regulation signal (SR) for regulating the laser source.

Abstract: An eductor for conveying materials includes a body defining a first end and a second end and having a first inlet proximate the first end and a body outlet proximate the second end, the body defining a second inlet positioned between the first inlet and the body outlet, and the body defining an interior area. The eductor includes one or more inserts disposed within the body. The insert or inserts are manufactured from an abrasion resistant material.

Abstract: A conveyor (10) for transporting powder from an inlet point (14) to at least one discharge point (20) comprises a fluidized bed transport space (12) and a fluidization gas supply space (16), the fluidized bed transport space (12) being separated from the fluidization gas supply space (16) by a gas permeable wall (18); a gas outlet (22) for removing fluidization gas from the transport duct (12); means (24) for separating dust from the removed fluidization gas; and means (26) for returning the separated dust to the powder proximate the discharge point (20). In a preferred embodiment, the separated fines dust is returned to, and homogenized into, the powder in a lower portion of a cyclone, which is located at the discharge point.

Abstract: This platform provides access to a hydraulic machine via a suction tube. This hydraulic machine belongs to an installation for converting hydraulic energy into mechanical or electrical energy, or reciprocally. The platform includes a load-bearing element designed to slide along a longitudinal axis in order to enter an opening in the suction tube, said load-bearing element having an extremity that is designed to be immobilized in the suction tube and floor elements that are placed on the load-bearing element. At least some of the floor elements are articulated with the load-bearing element about axes substantially parallel to the longitudinal axis, while these floor elements can be rotated about these axes between a folded configuration and a deployed configuration and define at least a portion of a floor of the platform.

Abstract: A tuning process is provided for dynamically tuning a gas-turbine (GT) engine to correct for flashback events without directly measuring occurrences of the flashback events at the GT engine. Initially, readings are taken that measure low-frequency dynamics at the GT engine. A determination of whether flashback criteria are met by an instantaneous signal that quantifies a detected spike within the measured low-frequency dynamics is carried out, where the flashback criteria include the following: identifying the spike overcomes a multiple of an average of the low-frequency dynamics measured over a predefined period of time; and identifying the spike overcomes a preestablished minimum amplitude. Upon the spike meeting the flashback criteria, a count is added to a running record of spikes, which is compared to an alarm limit. If the alarm limit is triggered, action(s) are invoked to address the flashback events, such as adjusting fuel-flow splits of the GT engine.

Abstract: A gas cleaning unit for cleaning an effluent gas of at least one aluminium production electrolytic cell comprises a contact reactor in which the effluent gas is brought into contact with alumina, and a dust removal device for removing at least a portion of the alumina. The gas cleaning unit further comprises a wet scrubber in which the effluent gas is brought into contact with an absorption liquid containing water for removing further pollutants from the effluent gas. The wet scrubber is positioned at a point vertically higher than that of the dust removal device.

Abstract: A power supply vital monitor for track circuits for railway systems includes a track segment that is separated from adjacent segments by electric joints. Each track segment includes a signal transmitting unit and receiving units for transmitting and receiving train presence detection signals and/or transmitting or receiving communication signals between the train and the track segment. The transmitting unit and receiving units are connected to a common power supply line. To avoid an erroneous clearing of an occupied status caused by spurious signals on the power supply line affecting reception of the train detection signals, each receiving unit includes a first and a second channel, which connect the receiver with the corresponding track circuit and with a power supply sensor connected to the power supply line. Switches enable and disable connections of the receivers to the corresponding track circuit and to the corresponding power supply sensor.