Abstract: A steam turbine power generation system, comprising a high-pressure turbine, an intermediate-pressure turbine and a low-pressure turbine, wherein the intermediate-pressure turbine has an inlet steam temperature of 650-720° C., and the low-pressure turbine has an inlet steam temperature of 410-430° C.; and a low-pressure turbine rotor of the low-pressure turbine is made of a heat-resisting steel which contains, in weight percent, C: 0.28 or less, Si: 0.03 or less, Mn: 0.05 or less, Cr: 1.5 to 2.0, V: 0.07 to 0.15, Mo: 0.25 to 0.5, Ni: 3.25 to 4.0, and the balance of Fe, unavoidable impurities and unavoidable gases, and the unavoidable impurities contain, in weight percent, P: 0.004 or less, S: 0.002 or less, Sn: 0.01 or less, As: 0.008 or less, Sb: 0.005 or less, Al: 0.008 or less and Cu: 0.1 or less.

Abstract: A high temperature steam valve has a valve casing including a main steam inlet, a main steam outlet and a valve chest. The high temperature steam valve also has a valve seat positioned in the valve chest, a valve element facing the valve seat, and a valve rod slidably penetrating the valve casing to drive the valve element. A cooling steam hole is provided to surround a valve-rod penetrating portion of the valve casing. Cooling steam can be poured into the cooling steam hole from outside through a cooling steam inlet hole and steam having finished heat exchange can be exhausted from a cooling steam outlet hole into the valve chest. The sliding portion between the valve rod provided in the valve-rod penetrating portion of the valve casing and bush is cooled to prevent oxidized scale from depositing on the sliding portion.

Abstract: The present invention aims at providing a display driver and a display device using such a display driver which can prevent the deterioration of the display quality of a display section by suppressing the drop of a power source voltage between respective display drivers. When a COG-mounted liquid crystal display panel whose mode can be changed over between a master mode and a slave mode is driven by a plurality of display drivers, the display driver at the master side which is set in the master mode supplies the power source voltages for driving liquid crystal generated by a voltage generating part due to input switching parts to power source voltage input terminals of the display driver at the slave side using operational amplifiers. The display driver at the slave side generates the power source voltage for driving the liquid crystal from the power source voltage supplied from the power source voltage input terminals by input switching parts using the voltage-follower connected operational amplifiers.

Abstract: A display driver includes: a decoder which decodes n-bit (n is an integer greater than one) display data sequentially input from a display memory in units of n bits; a plurality of latch circuits which latch output data of the decoder; an address decoder which generates a latch pulse for the latch circuits to latch output from the decoder; and a plurality of data line driver sections. The n-bit display data is read from the display memory and input to the decoder by performing wordline control once. The decoder decodes the n-bit display data, and sequentially outputs the decoded data to the latch circuits. The address decoder outputs the latch pulse to one of the latch circuits selected based on address information on the display memory when the n-bit display data is read and storage destination designation information arbitrarily set from a control circuit.

Abstract: A display driver including: a decoder which decodes n-bit display data (n is an integer greater than one) sequentially input from a display memory in units of n bits; a plurality of latch circuits which latch output data from the decoder, and a pluality of data line driver sections which drive data lines of a display panel based on the data latched by the latch circuits. The n-bit display data is read from the display memory and output to the decor by performing wordline control once for the display memory. The decoder squentially outputs the decoded n-bit display data to the latch circuits. The data line driver sections drive the data lines after the decoded data has been stored in the latch circuits.

Abstract: A display driver includes: a parity generation circuit which generates s-bit parity data for n-bit display data input through a processor interface, combines the n-bit display data and the s-bit parity data, and outputs the combined n-bit display data and s-bit parity data to a display memory as (n+s)-bit display data; a parity check circuit which performs data error detection for the (n+s)-bit display data sequentially input from the display memory in units of (n+s) bits, and outputs the n-bit display data; at least one decoder which decodes the n-bit display data output from the parity check circuit; a plurality of latch circuits which latch the data decoded by the decoder; and a plurality of data line driver sections which drive data lines of a display panel based on the data latched by the latch circuits.

Abstract: An intermediate-pressure turbine is divided into a high-temperature, high-pressure side high-temperature, intermediate-pressure turbine section 11a and a low-temperature, low-pressure side low-temperature, intermediate-pressure turbine section 11b, the component members of the high-temperature, intermediate-pressure turbine section 11a are formed of austenitic heat-resistant steels or Ni-based alloys, and the high-temperature, intermediate-pressure turbine section 11a is operated by steam having a temperature of 650° C. or more. Other turbines are mainly formed of ferritic heat-resistant steels. Thus, a steam turbine power plant having high thermal efficiency and being economical can be provided.

Abstract: The present invention aims at providing a display driver and a display device using such a display driver which can prevent the deterioration of the display quality of a display section by suppressing the drop of a power source voltage between respective display drivers. When a COG-mounted liquid crystal display panel whose mode can be changed over between a master mode and a slave mode is driven by a plurality of display drivers, the display driver at the master side which is set in the master mode supplies the power source voltages for driving liquid crystal generated by a voltage generating part due to input switching parts to power source voltage input terminals of the display driver at the slave side using operational amplifiers. The display driver at the slave side generates the power source voltage for driving the liquid crystal from the power source voltage supplied from the power source voltage input terminals by input switching parts using the voltage-follower connected operational amplifiers.

Abstract: A turbine system and method for power generation has an electric generator, a reformer, a cooler, a fuel compressor, an air compressor, a combustor, a turbine, an evaporator. The reformer reforms fuel containing a mixture of hydrocarbon gas and steam to produce hydrogen and carbon dioxide. To enhance reformation, the reformation is carried out under pressure at 7 ata or less. To aid compression, the cooler cools the reformed fuel before the compressor compresses the reformed fuel. The combustor burns air compressed by the air compressor, which is driven by the turbine, and the reformed fuel received from the fuel compressor to generate hot gas. The turbine receives the hot gas from the combustor and drives the generator to generate electricity. The reformer receives the hot gas discharged from the turbine as a heat source to heat the fuel and chemically reform the fuel.

Abstract: A gasification power generation system includes: a gasifying section for allowing a fuel, such as coal, to react with a gasifying agent, such as air, to produce a gasified product gas; a power-generating section for generating electricity using energy obtained by burning the gasified product gas, which is produced by the gasifying section; and a preheating section for preheating the gasifying agent supplied to the gasifying section, to a self ignition temperature of, e.g., about 1000° C. The preheating section raises the temperature of air supplied into the gasifying section, to a high temperature of about 1000° C. when a fossil fuel, such as coal, is used as the fuel. Thus, it is possible to achieve gasification power generation with a high generating efficiency using inexpensive, simple constructions and to realize a stable and low NOx combustion of the gasified product gas.