Kabushiki Kaisha Toshiba

Hitachi, Ltd.

Agc Inc.

Daisuke Nomura

Akihiro Onoda

Noriyuki Yaginuma

Hiroshi Kawakami

Kenichi Imai

Sakae Kawasaki

Kentaro Tani

Masanori Tsukushi

Makoto Hirose

Yuji Kaneko

Shunsuke Sadakane

Asako Inomata

Hisashi Matsuda

Naoki Shibukawa

Junichi Tominaga

Shinichiro Ohashi

Osamu Furuya

Hiroyuki Kawagishi

Yoriharu Murata

Fumio Otomo

Tomohiro Tejima

Hiroyuki Nakamichi

Hideaki Uchiyama

Yuuji Kaneko

A vehicle window plate has a maximum value of a variation of a curvature in a vertical direction being &#xb1;7.6E-6 mmor less at least within a HUD display area. The curvature preferably increases monotonically from a lower side to an upper side at least within the HUD display area.

Vehicle window plate

A gas circuit breaker having a pair of contacts and a pair of exhaust conductors. An exhaust hole in the pair of exhaust conductors is provided with an insulation cover having an opening. The cover has a guide on an opening end on the side near the pair of contacts and an opening end on the side far from the pair of contacts respectively. The guide has an exhaust hole protective guide and a high-temperature gas passage dividing guide. A first gas flow passage is between an exhaust hole protective guide and a high-temperature gas passage dividing guide, and a second gas flow passage is between the high-temperature gas passage dividing guides. The first gas flow passage is narrower than the second gas flow passage. An end of the exhaust hole protective guide on the first gas flow passage side is projected toward the high-temperature gas passage dividing guide.

Gas circuit breaker

A steam turbineof an embodiment includes a turbine rotor, rotor blade cascadeshaving rotor blades, stationary blade cascadeshaving stationary blades, and a steam passageformed on a turbine stage, among turbine stages, including the rotor blades each having a blade height equal to or more than a blade height at which a loss generated when a leakage steam flown between a diaphragm inner ringand the turbine rotorjets into a main steam and a benefit brought by increasing the blade height of each of the rotor bladesin accordance with an increase in a flow rate of the main steam by an amount of the leakage steam are cancelled, and leading the leakage steam from an upstream side to a downstream side of a rotor disk

Steam turbine

An insulation rod cover is fitted to an end portion of a puffer shaft and the insulation rod cover is fitted to a circuit-breaker side coupling pin coupling between a puffer shaft and an insulation rod, thereby allowing the insulation rod cover to be held at a joint between the puffer shaft and the insulation rod. In a first half of a circuit-breaking operation, the insulation rod cover is positioned in the exhaust cylinder and the exhaust of the hot gas from the puffer shaft is suppressed to increase the pressure of an extinguishing gas to be sprayed onto the arc. In a last half of the circuit-breaking operation, the insulation rod cover is positioned in a guard cylinder to promote the exhaust of the hot gas from the puffer shaft as well as to suppress the flow of the hot gas into the insulation cylinder.

A gas circuit breaker including a pair of main contacts is openable inside an insulating tank. A pair of arc contacts is arranged on the inner side of the main contacts, and a puffer cylinder has the main contacts and the arc contacts at an end. A puffer chamber is formed inside the puffer cylinder, and a puffer piston is provided on the inner periphery of the puffer cylinder. An insulating nozzle part is mounted on an end of the puffer cylinder to surround the arc contact. The insulating nozzle part includes a split nozzle base part and a split nozzle end part, and the split nozzle base part has a throat part.

A gas circuit breaker is configured by comprising a tank filled with arc extinguishing gas, a pair of fixed side arc contact and moving side arc contact in the tank, a puffer chamber formed with a puffer cylinder including the moving side arc contact at its end and a fixed piston, and an insulating nozzle, attached to the end of the puffer cylinder, surrounding the moving side arc contact, that forms a flow channel to guide arc extinguishing gas from the puffer chamber to the contacts. A puffer cylinderhas a cylindrical memberat a breaker side end, an end of the insulating nozzleis provided in the cylindrical member. And the gas circuit breaker is configured by further comprising a hollow moving side main contactat a breaker side end of the cylindrical member, a pressing metal fittingto engage an insulating nozzlein the hollow part of the moving side main contact

In a gas circuit breaker with a parallel capacitor, an interrupting unit is provided inside a sealed vessel filled with an insulating gas; the interrupting unit includes fixed and movable parts. A high-voltage conductor is coupled to the movable part, and an interrupting-unit side insulating rod for moving the movable part is linked with a mover as part of an electric actuator inside an operation device case. A capacitor is electrically coupled to the interrupting unit in parallel inside the sealed vessel. A movable contact is electrically coupled to the capacitor, and the movable contact is linked with a capacitor-side insulating rod. The interrupting-unit side insulating rod or mover has an engaging part inside the case, the capacitor-side insulating rod has a retaining part located on a side of the engaging part, and the retaining part is linked with the sealed vessel by use of a closing-spring.

Gas circuit breaker provided with parallel capacitor

A turbine rotor assemblycomprises a turbine rotor and a plurality of moving bladesimplanted in a circumferential direction of the rotor. A flow passage is formed between each of the moving bladesand a circumferentially adjacent moving blade. Each of the moving bladescomprises a suction side connecting memberprotruded on a blade suction surfaceand a pressure side connecting memberprotruded on a blade pressure surface, wherein the suction side connecting memberof each of the moving bladesis configured to be connected with the pressure side connecting memberof the circumferentially adjacent moving bladeto form an intermediate connecting memberbetween the moving bladeand the circumferentially adjacent moving bladeduring a rotation of the turbine rotor. A downstream side end edgeof the intermediate connecting memberis positioned at an upstream side of a throat S of the flow passage.

Turbine rotor assembly and steam turbine

An axial flow turbine stage structure has: an annular diaphragm inner ring; an annular diaphragm outer ring arranged radially outside and coaxially with the diaphragm inner ring and separated from the diaphragm inner ring by an annular flow path interposed between them; stationary blades arranged peripherally at intervals in the annular flow path and rigidly secured to the diaphragm inner ring and the diaphragm outer ring; and moving blades rigidly secured to the outer periphery of a rotatable rotor and arranged peripherally at intervals respectively at axially downstream sides of the stationary blades. Through holes are formed in the diaphragm outer ring so as to allow axial upstream side and axially downstream side of the stationary blades to communicate with each other.

Axial flow turbine and stage structure thereof

An axial flow turbine provided with a stage composed of a turbine nozzle and a turbine rotor blade arranged in an axial flow direction. Both end portions of a nozzle blade of the turbine nozzle are supported by a diaphragm inner ring and a diaphragm outer ring, and a flow passage is formed to have its diameter expanded from an upstream stage to a downstream stage. In such axial flow turbine, trailing edges at ends of the nozzle blade supported by the diaphragm inner ring and the diaphragm outer ring are curved as a curvature to an outlet side, and an intermediate portion between the trailing edges is formed to be straight.

Axial flow turbine

A turbine blade cascade structure includes a plurality of blades arranged in series in a circumferential direction on a wall surface, in which a corner portion defined by the wall surface and a front edge portion of each of blade bodies supported by the wall surface, to which a working fluid flows, includes a cover portion (fillet) that extends toward an upstream side of a flow of the working fluid. The turbine blade cascade structure is capable of reducing the secondary flow loss of the secondary flow in spite of the fluctuation of an incident angle of the working fluid flowing to the front edge portion of the blade body.

Growing community of inventors

Tokyo, Japan

Daisuke Nomura