Kabushiki Kaisha Toshiba

Other

Kiyoto Oyagi

Hidehiko Kuroda

Michio Sato

Shigeru Kanemoto

Kazuo Saito

Makoto Ochiai

Hitoshi Sakakida

Tatsuo Yamashita

Takuhisa Kondo

Shuuichi Umezawa

Hajime Obikawa

Tetsunori Hisatsune

Masaru Amemiya

Tadashige Inoue

A torsional vibration measuring instrument has a plurality of reflecting means () arranged with stipulated intervals along surface of a rotator () of which torsional vibration is to be measured; a pulse light irradiating means () for irradiating a repetitive pulse light beam to the reflecting means; and an outgoing-transmitting means () for transmitting the irradiated pulse light beam. The torsional vibration measuring instrument also has a plurality of transmitting-receiving means () for irradiating the transmitted pulse light beam to the reflecting means, and for receiving reflected pulse light beams which have been reflected by the reflecting means; and an incoming-transmitting means () for transmitting the reflected pulse light beams which have been received. The torsional vibration measuring instrument also has a plurality of detecting means () for detecting the reflected pulse light beams which have been transmitted by the incoming-transmitting means; and a signal processing means () for processing pulse output signals which have been outputted from the detecting means and for calculating torsional vibration frequency of the rotator to be measured.

Torsional vibration measuring instrument

A torque measuring device including a light irradiation element for irradiating a light, and a control unit operatively connected to the irradiation element so as to branch the light into a plurality of lights as beams and control a beam diameter of the respective lights so as to irradiate the lights on a surface of a member to be measured. The torque measuring device further includes a plurality of reflectors disposed on the surface of the member to be measured so as to change reflection state of the respective lights, a plurality of detectors for detecting the changes of intensities of the respective reflected lights and generating signals thereof, and a signal processor for processing the generated signals and operating a rotation period on the basis of the generated signals thereby to calculate a torque of the member to be measured.

Device for calculating a torque of a rotating member

A method of cleaning a boiler of a power generation plant is performed removing an oil component remaining in an interior of the boiler before a steady operation of the power generation plant. For such cleaning, a surface active agent is used as a cleaning liquid, and a cleaning liquid tank, into which the cleaning liquid is stored, is temporarily located, which is connected to a boiler feed water pipe through a cleaning liquid injection pipe and a cleaning liquid injection pump, by which the cleaning liquid is injected into the boiler feed water pipe in a controlled manner to feed the cleaning liquid into the boiler.

Method and apparatus for cleaning boiler of power generation plant

Growing community of inventors

Kanagawa-ken, Japan

Kiyoto Oyagi