摘要:
A steam-cooling gas turbine in which cooling steam is fed from a center portion of a rotating shaft and recovered through passages disposed at the outer side of the center portion with steam leaking through a seal portion from a feeding steam being effectively recovered. Feed steam (30) serving as coolant is supplied to a cavity (27) from a inner cylinder (10) and hence fed to moving blades (11, 12) through recesses (40) formed in a coupling portion (26) interposed between a final-stage disk (24) and a turbine shaft (1), steam feeding pipes (15) and steam feeding passages (11a, 12a). After cooling of the moving blades, steam (31) is recovered through steam recovering passages (11b, 12b), steam recovering pipes (16), radial steam-recovering passages (17), axial steam-recovering passages (18) and outlet openings (5a). The coupling portion (26) is forced to hermetically close under thermal stress, whereby leakage of the feed steam (30) is prevented. Steam leaking through a seal portion constituted by stationary and rotatable seal fin assemblies (4a, 4b) can be effectively recovered. The inner cylinder (10) can move in the axial direction through cooperation of piston rings (43) and a centering piece (6) adapted for absorbing thermal stress induced in the inner cylinder (10). Upstream tip end portions of steam feeding pipes (15) and steam recovering pipes (16) are secured onto a side surface of the first-stage disk (21) through sleeves removably fitted thereto.
摘要:
An ink cartridge has a cover that is in intimate contact with an ink tank around the ink injection port and having an opening portion at a position corresponding to the ink injection port, and the protection cap held slidably between the cover and the ink tank for opening/closing the opening portion. When the protection cap is closed, the ink injection port is tightly closed. Also, the protection cap of the ink cartridge has a lever projecting from the opening portion of the cover. An ink cartridge holder fixed to the recording apparatus for loading the ink cartridge thereon has claws engaged with a lever of the ink cartridge in the loading condition. When the ink cartridge is loaded, the protection cap is opened by the claws.
摘要:
A flexible printed circuit having wiring patterns printed on a flexible resin film, comprising a narrow flexible area having first wiring patterns and constituting a flexible wiring part and a broad connection area adapted to be adhered to a main board and having second wiring patterns connected to the first wiring patterns and adapted to be electrically connected to wiring patterns on the main board. The second wiring patterns serve to electrically connect the first wiring patterns of the flexible wiring part to the wiring patterns on the main board. Also included is a conductive adhesion surface formed on the broad connection area along a side of the main board, having a width larger than a width of the first wiring patterns, and extending from an inside of a region to an outside thereof. The region is defined in the broad connection area by extending a boundary of the flexible area into the broad connection area. A flexible printed circuit can be provided which has a high peel-off resistance to an applied stress.
摘要:
A gas turbine combustor having a combustion chamber (10) with a steam-cooled peripheral wall (2) has an air hole (1) for injecting dilution air therethrough bored in the peripheral wall (2) on an upstream side of the combustion chamber (10). The air is thereby supplied through the air hole (1) into the vicinity of an inner surface of the peripheral wall (2) to form a film flow of air, and an increase of the fuel concentration there is suppressed. The dilution air is preferably supplied from a gas turbine compressor (6).
摘要:
A transition piece of a combustor which is sustainable even under conditions of more severe thermal environments is provided in the present invention. A transition piece of a combustor is provided with a cylindrical trunk main body, a cylindrical exit trunk part which is joined to the downstream end of the trunk main body and which cooperates with the trunk main body to constitute a trunk part, and an inner flange which extends from the downstream end part of the exit trunk part toward the outer periphery side of the exit trunk part. The exit trunk part and the inner flange are of an one-piece product. On the exit trunk part, there is formed a groove, and there is formed a cooling fluid passage which opens at the groove.
摘要:
A circuit design device comprises a logic synthesis unit that generates a circuit with reference to a circuit design description, a statistical timing analysis unit that obtains a probability distribution of delay times of a path in a circuit, a relative delay restriction fulfillment rate calculation unit that obtains a fulfillment rate of the relative delay restriction according to the probability distribution of the delay time from the same starting point at each restricted path subjected to the relative delay restriction, a path delay probability distribution changing unit that changes the probability distribution of delay times of the restricted path to changed probability distribution when the fulfillment rate does not reach a predetermined rate, and a logic circuit structure changing unit that changes the structure of the circuit so as to follow the changed probability distribution.
摘要:
A liquid crystal display device includes a panel having pixel electrodes arranged at intersections of a plurality of signal lines via switching elements for transmitting display data and a plurality of scanning lines for transmitting control signals, and a control circuit for controlling the panel. The liquid crystal panel is divided into first pixel regions and second pixel regions adjacent to the first pixel regions. The control circuit carries out impulse driving in which the control signals transmitted to each of the scanning lines are activated two times in one frame period for displaying an image. The control circuit writes the display data in either one of the pixel regions and writes reset data in the other pixel regions when the control signals are activated once of the two times. By writing the reset data in the pixel regions, the display data written in an immediately preceding frame are reset. In consecutive frames, the display data written in the pixel regions are always reset in one frame period. Therefore, blurring in a moving image can be alleviated. Since writing the display data and the reset data is carried out separately in the first pixel regions and in the second pixel regions, flicker is prevented from occurring in a display screen.
摘要:
Provided is a data transfer apparatus and method that enables fast data transfer, and has a simple circuit configuration and a small area; and a semiconductor circuit. The data transfer apparatus includes: a data pair generation circuit (301) that transfers a generated data pair during one cycle of a handshake signal communication; a multiplexer (302) that outputs one of the data pair in accordance with a handshake signal; a memory (305) that stores the data output from the multiplexer (302) in response to bi-directional transition of the memory control input signal; a memory control circuit (303) that performs a handshake signal communication and outputs the memory control signal; a request signal waiting circuit (306) that waits until one of the data pair is stored in the memory (305) and the other data is output from the multiplexer (302); and a data pair receiving circuit (307) that receives the data pair in response to a signal from the request signal waiting circuit (306) and outputs the data pair to the transfer destination.
摘要:
In a power supply system, a controller is electrically connected with a plurality of switching elements of a multiphase inverter. The controller switches the plurality of switching elements on and off during a multiphase motor being activated. This converts a voltage of a first power storage device into a multiphase AC voltage so as to supply the multiphase AC voltage to the multiphase motor. This also boosts a voltage of a second power storage device to charge the first power storage device by the boosted voltage via multiphase windings of the motor. The controller switches the plurality of switching elements on and off during the multiphase motor being inactivated to thereby boost the voltage of the second power storage device to charge the first power storage device by the boosted voltage.