Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.

Masaki Osako

Takao Yokoyama

Hideaki Sato

Ryo Takata

Soichiro Tabata

Masaki Tojo

Naoto Tochitani

Masahiro Ishikawa

Satomi Nagae

A drain removal monitoring equipment for monitoring, in a steam turbine, drain removal performed by drawing a fluid outside at least one hollow stator vane including an internal space into the internal space via a slit formed in a surface of the stator vane includes: a gas-liquid separation device for separating the fluid drawn into the internal space into a liquid phase and a gas phase; a liquid-phase flow measurement device for measuring a flow rate of the liquid phase separated by the gas-liquid separation device; a gas-phase flow measurement device for measuring a flow rate of the gas phase separated by the gas-liquid separation device; a liquid-phase return line through which the liquid-phase flow measurement device and the steam turbine communicate with each other, and a gas-phase return line through which the gas-phase flow measurement device and the steam turbine communicate with each other.

Drain removal monitoring equipment

An object is to is to reduce a leakage flow by reducing a clearance between an end surface of a nozzle vane, forming a variable nozzle mechanism of a variable geometry turbocharger, and a wall surface facing the end surface, and prevent the nozzle vane from being stuck due to contact of the end surface. A variable geometry turbocharger includes a nozzle shaftwhich protrudes on one of the both end surfacesof a nozzle vaneand rotatably supports the nozzle vane, a shaft holein which the nozzle shaftfits with a gap in between, a distal end surfaceof the nozzle vane with which a clearance is reduced when the nozzle vanewhich has received exhaust-gas pressure is inclined toward an inner diameter side due to a fitting gap formed between the shaft holeand the nozzle shaftfit to each other, the clearance being formed between the distal end surfaceand a wall surfaceof another one of the parallel walls, and a clearance reduction promotion portionwhich promotes reduction of the clearance with an increased inclination angle of the distal end surfaceor an increased exhaust-gas-affected surface of the nozzle vane

Variable geometry turbocharger

Growing community of inventors

Tokyo, Japan

Masaki Osako