Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

Fujitsu Corporation

Nokia Corporation

Hisashi Goto

Yuichi Nakamura

Takuhiro Tsunekawa

Toshihiko Endo

Koichi Nagaishi

Hiroyuki Miya

A steam turbine valve abnormality monitoring system according to an embodiment includes a detection unit detecting the state of a steam turbine valve or a steam turbine valve drive device, a determination unit, and an abnormality processing unit. Based on the detected result of the detection unit, the determination unit determines whether or not an abnormality has occurred in the opening degree control of the steam turbine valve. The abnormality processing unit issues an alarm or issues a turbine stop command when the determination unit determines that an abnormality has occurred in the opening degree control of the steam turbine valve.

Steam turbine valve abnormality monitoring system, steam turbine valve drive device, steam turbine valve device, and steam turbine plant

A steam turbine valve drive apparatus in an embodiment includes a piston, a cylinder, a bidirectional pump, a servo motor, and a quick closing mechanism. The cylinder houses the piston in an inner space thereof, the inner space being partitioned by the piston into a first hydraulic chamber and a second hydraulic chamber. The quick closing mechanism executes a quick closing operation of closing the steam valve unit more quickly than the closing operation. Here, the quick closing mechanism executes the quick closing operation by feeding the working oil accumulated in an accumulator to the second hydraulic chamber and draining the working oil from the first hydraulic chamber.

Steam turbine valve drive apparatus

A compiler, which makes a computer carry out a process for generating a program used for a remote access to a virtual database comprising a first computerincluding an application program and a second computerbeing connected to the first computerby way of a network and including one or more databases, replaces () a description part relating to a DML execution process for the virtual database from a source codeof the application program with a description relating to an RPC process and generates a program for executing the DML execution process for the native databases based on the RPC process. The use of the program enables a high performance remote database access while applying a virtual database function aiming at facilitating a business logic buildup.

Method and system for remote accessing a virtual database system

In the formation of a stacked IC device formed by stacking IC chips by a plurality of levels, the number of selecting bonding wires connected to select an IC chip on a certain level is reduced. The selecting device of the IC chip on each of the levels is connected to the selecting device on a neighboring level in the form of a chain to form a shift register so that only when a trigger signal is applied to the selecting device, the selecting device sequentially transmits a signal held in itself to the selecting device on the neighboring level.

Growing community of inventors

Kawasaki, Japan

Hisashi Goto