Other

Hitachi, Ltd.

Babcock-Hitachi Kabushiki Kaisha

Hitachi-Ge Nuclear Energy, Ltd.

Katsuhiko Hirano

Kunio Enomoto

Ren Morinaka

Eisaku Hayashi

Sadato Shimizu

Shigeru Tanaka

Tetsuya Ishikawa

Satoshi Kanno

Noboru Chiba

Satoshi Okada

Makoto Hayashi

Makoto Kitano

Naoyuki Kono

Masahiro Otaka

Kouichi Kurosawa

Ryosuke Kobayashi

Masahiro Tooma

Hayato Mori

Toshiharu Nagashima

Kazunori Sato

Yosuke Takatori

Kazuo Amano

Kazuhiro Nitta

Yoshitoshi Suzuki

Shinji Go

Youichi Mahara

A system for attitude control of an underwater vehicleof the present invention includes an underwater vehiclewith a thruster, an assist devicethat is coupled to the underwater vehiclewith a cableand has cable handling equipmentand a thruster, a cable attachment-to-attachment distance detection unitthat detects distance between a cable attachment of the underwater vehicleand a cable dispenser of the assist device, and a control unitthat previously stores the relationship between the attachment-to-attachment distance and cable length including a predetermined amount of slack and determines the amount of cable to be wound up or let out based on the cable length associated with the detected attachment-to-attachment distance.

System for attitude control of underwater vehicle and method for attitude control of underwater vehicle

A preventive maintenance method and apparatus for a structural member in a reactor pressure vessel according to the present invention reduce a tensile residual stress on a surface of the structural member by impinging a water jet from a nozzle onto a plane surface of a deflector to thereby change direction of flow of the water jet, and impinging the water jet after being deflected onto the surface of the structural member. This method and apparatus are applicable to a narrow space portion, and can improve a residual stress on the surface of the structural member and can also prevent damage such as stress corrosion cracking.

Preventive maintenance method and apparatus of a structural member in a reactor pressure vessel

An opening portion is produced by cutting a recirculating piping connected to a recirculating nozzle of a reactor pressure vessel A repairing device is brought into an annulus of the reactor pressure vessel from the opening thereby repairing the annulus

Device and method for repairing inside of reactor pressure vessel

A liquid crystal display device, a liquid crystal display device cutting method, and a liquid crystal display device cutting apparatus that prevents damaging attached flexible conductive lines by providing a rounded water jet cut edge of a glass liquid crystal panel. The liquid crystal display device cutting apparatus includes a pump for increasing the pressure of a liquid, a nozzle with a throat that receives the pressurized liquid, a movable nozzle support that is movable at least in a plane parallel to the liquid crystal display, and a conveyor supporting the liquid crystal display device.

Liquid crystal glass substrate, method of cutting the liquid crystal glass substrate, cutter for the liquid crystal glass substrate and display using the liquid crystal glass substrate

A water jet peening apparatus which can carry out an efficient peening work on a large-diameter cylindrical structure by injecting a jet stream which contains air bubbles caused by cavitation at a low angle of incidence is provided. The apparatus is comprised of a nozzle which introduces a high pressure water and injects a water jet stream containing air bubbles caused by cavitation at the cylindrical structure disposed in water, wherein the angle of injection of the jet stream is smaller than 45 degrees relative to a tangent of the cylindrical structure.

Water jet peening apparatus

A fluid jet nozzle has a water chamber accommodating therein pressurized fluid, an orifice communicating with the water chamber and contracting the fluid from the water chamber, a throat communicating with the orifice and through which the fluid from the orifice passes, a multiplication chamber communicating with the throat and receiving the fluid from the throat for multiplying cavitation, and a diffusion chamber receiving the fluid from the multiplication chamber for diffusing the fluid.

Fluid jet nozzle and stress improving treatment method using the nozzle

Growing community of inventors

Hitachi, Japan

Katsuhiko Hirano