Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

Tomohiro Tejima

Akihiro Onoda

Naoki Shibukawa

Takashi Ogawa

Kenichi Imai

Shogo Iwai

Tsuguhisa Tashima

Asako Inomata

Daisuke Nomura

Norikazu Takagi

Tomohiko Tsukuda

Osamu Furuya

Hiroyuki Kawagishi

Yasushi Yamamoto

Yoriharu Murata

Shota Inoue

In one embodiment, a power generating system includes a cooling absorption tower configured to cause an absorption liquid to absorb carbon dioxide in atmosphere. The system further includes an evaporator configured to heat the absorption liquid to release the carbon dioxide and water vapor from the absorption liquid, and discharge the absorption liquid that has released the carbon dioxide and the water vapor, and a first gas including the carbon dioxide and the water vapor. The system further includes a turbine configured to be driven by a portion of the first gas. The system further includes a generator configured to be driven by the turbine. The system further includes a capturer configured to condense the water vapor included in a remaining portion of the first gas, and capture the carbon dioxide that is included in the remaining portion of the first gas and to be a capture target.

Power generating system and power generating method

An axial flow turbine according to an embodiment includes: an outer casing; an inner casing provided inside the outer casing; a discharge pipe that is welded and joined to the outer casing and through which a working fluid discharged from the axial flow turbine flows; a sleeve that is provided inside the outer casing and the discharge pipe and guides the working fluid discharged from the axial flow turbine to the discharge pipe; a tubular member that is provided over an outer periphery of the sleeve inside the outer casing and the discharge pipe and covers an inner periphery side of a joint portion between the outer casing and the discharge pipe; an introduction port that introduces a cooling medium into a space demarcated by the outer casing, the discharge pipe, and the tubular member; and a discharge port that discharges the cooling medium introduced into the space.

Axial flow turbine

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

In one embodiment, a calculation method of moisture loss in a steam turbine calculates first a wetness fraction at the inlet and outlet of each of stationary blade cascades and rotor blade cascades. Subsequently, the moisture loss is classified into (1) supersaturation loss, (2) condensation loss, (3) acceleration loss, (4) braking loss, (5) capture loss and (6) pumping loss, and a loss for calculation of the moisture loss is selected from the above losses (1) to (6) according to the wetness fraction of steam at the inlet and outlet of each blade cascade. An amount of each selected loss is calculated, and an amount of moisture loss at each blade cascade is calculated.

Calculation method of moisture loss in steam turbine

Growing community of inventors

Yokohama, Japan

Tomohiro Tejima