Mitsubishi Heavy Industries Limited

Kengo Shimamura

Kenji Kawasaki

Yoshiyuki Kondo

Ryoichi Kawakami

Toshiyuki Mizutani

Naoki Ogawa

Koichi Tanimoto

Tomoyuki Inoue

Jiro Kasahara

Nobutaka Nakajima

Kenji Nishida

Naoaki Hirota

Itaru Muroya

Masato Yamasaki

Tomoya Nakagawa

Kosuke Kitamura

Yosuke Katsura

The steam generator includes: a water supply channel for supplying a secondary coolant to a tube bundle outer casing with the secondary coolant being isolated from the recirculating secondary coolant; a recirculating secondary coolant injection section for injecting the recirculating secondary coolant toward a high temperature-side heat transfer tube bundle; and a supplied secondary coolant injection section for injecting the secondary coolant supplied from the water supply channel toward a low temperature-side heat transfer tube bundle. The recirculating secondary coolant injection section and the supplied secondary coolant injection section being disposed in the tube bundle outer casing on the side toward the tube plate. The recirculating secondary coolant injection section and the supplied secondary coolant injection section are defined such that, of the secondary coolant and the recirculating secondary coolant, the coolant having a higher relative flow rate than the other flows at a lower velocity.

Steam generator

A steam generator having a heat transfer tube group formed of a plurality of U-shaped heat transfer tubes; an annular channel formed to cover the circumference of the heat transfer tube group; the annular channel having an opening that communicates with the heat transfer tube group; a water supply unit disposed at an upper portion of the annular channel and supplies water to a descending-side portion; a steam/water separator disposed above the heat transfer tube group; and an air bubble removing member for removing air bubbles provided in the annular channel.

In a multi-stage steam-water separation device and a steam-water separator, a first swirl vane () which causes a gas-liquid two-phase flow to rise while swirling is provided in a first riser () of a first steam-water separator (), and a second swirl vane () which causes the gas-liquid two-phase flow which has passed through the first swirl vane () to rise while swirling at a speed higher than that provided by the first swirl vane (), is provided in a second riser ().

Multi-stage steam-water separation device and steam-water separator

An in-plane compressive strength evaluation device () provided with a memory unit () into which, when an in-plane compressive strength evaluation is actually performed using a test piece, an evaluation result is stored as first information; a first analysis unit () that obtains second information that is an evaluation result related to the load and a displacement of the structural model; an adjustment unit () that adjusts an elemental factor of the structural model that influences the in-plane compressive strength such that the second information approaches the first information; and a second analysis unit () that, in a state where the elemental factor used when the second information approaches the first information most closely expands the structural model into the structural form of the actual tube support plate, and that performs the in-plane compressive strength evaluation using the expanded structural model.

In-plane compressive strength evaluation device and method therefor

In a steam-water separator, horizontal slits are formed on the outer side of the curving direction of the curved part and at a location between the curved part of the riser and the swirl vane.

Steam-water separator

Growing community of inventors

Hyogo, Japan

Kengo Shimamura