Mitsubishi Heavy Industries Compressor Corporation

Yuichi Sasaki

Katsumi Terada

Hiroaki Irikawa

Kyoichi Ikeno

Yasuhiko Kawamura

Yuzo Tsurusaki

Takuro Koda

Kenichi Nishiyama

Ken Nishitani

Yuki Nakamura

Hirotoshi Abo

A design method of a center guide pin includes a step of setting a virtual center axis of a casing, a step of acquiring a center position of the center guide pin in a horizontal direction, a step of acquiring, as a first offset amount, an offset amount of the center position of the center guide pin from the virtual center axis of the casing in the horizontal direction, a step of setting a virtual center axis of a diaphragm, a step of acquiring a center position of a groove portion in the horizontal direction, a step of acquiring, as a second offset amount, an offset amount of the center position of the groove portion from the virtual center axis of the diaphragm in the horizontal direction, and a step of designing the center guide pin based on the first offset amount and the second offset amount.

Method of center guide pin, manufacturing method of center guide pin, and assembling method of rotary machine

A steam turbine includes a rotor, a casing, a partition plate, and a center guide pin. The center guide pin has a positioning portion. In a state of being attached to a pin attachment portion formed in one of the casing and the partition plate, the positioning portion is disposed in a groove portion formed in the other of the casing and the partition plate. The positioning portion includes a plurality of abutment portions capable of abutting on an inner side surface of the groove portion, around a pin axis. The plurality of abutment portions is formed to have different horizontal distances from the pin axis.

Steam turbine, center guide pin, and method for manufacturing steam turbine

The measuring jig for the rotary machine is a measuring jig for a rotary machine including a casing that extending about an axis, a rotor that is disposed in the casing and extends in an axial direction about the axis, and a plurality of bearings that are disposed at intervals in the axial direction and supports the rotor in the casing. The measuring jig includes a plurality of casing fixing portions that are respectively attachable to and detachable from bearing holding portions to which the bearings are attached in the casing; a main member that extends in the axial direction so as to connect the plurality of casing fixing portions to each other; an arm that extends from the main member in an orthogonal direction orthogonal to the axial direction; and a reference surface that is disposed at a distance from a measurement target part of the casing.

Measuring jig for rotary machine and member management method for rotary machine

A probe device includes a probe that detects a state of a rotary shaft, a probe holding member having a first end fixed to a bearing portion, in which the probe is fixed to the first end, a cylindrical guide sleeve inserted into a communication hole of a casing, a second end of the probe holding member being inserted into the cylindrical guide sleeve, and a plurality of elastic support members disposed at an interval in an extending direction of the probe holding member between the second end of the probe holding member and an inner peripheral surface of the guide sleeve, and formed of an elastic material to form an annular shape extending along an outer peripheral surface of the probe holding member.

Probe device capable of suppressing damage while also suppressing increase in labor for mounting work

A steam turbine includes a casing which is dividable and of which both ends are open, and a bundle accommodated in the casing. The bundle includes a rotor, a plurality of diaphragms which can be divided, a bundle casing to which the diaphragm is fixed inside thereof, and a bearing portion fixed to an inside of the bundle casing on an outside of the diaphragm, and a seal portion fixed to the inside of the bundle casing between the diaphragm and the bearing portion. The bundle casing can be attached and detached to and from the casing in a state of holding the rotor, the diaphragm, the bearing portion, and the seal portion.

Steam turbine and method of manufacturing steam turbine

A lifting jig can lift a rotor and a diaphragm of a steam turbine including a casing that covers the rotor that can be divided with a division surface and the diaphragm that can be divided into an upper half diaphragm and a lower half diaphragm with a division surface. A lifting jig has a diaphragm fixing unit that can be fixed to the upper half diaphragm, a first rotor supporting unit that is integrally formed with a diaphragm fixing unit and can support one end portion of the rotor in an axial direction, and a second rotor supporting unit that is integrally formed with the diaphragm fixing unit and can support the other end portion of the rotor in the axial direction.

Lifting jig, disassembling method of steam turbine, component replacement method of steam turbine, and manufacturing method of steam turbine

A steam turbine assembling method includes an upper half assembling step of, after disposing an upper half partition plate having an upper half partition plate division surface on the inner peripheral side of an upper half casing having an upper half casing division surface, attaching an upper half position defining portion to the upper half casing and the upper half partition plate so as to form an upper half assembly, and a lower half assembling step of disposing a lower half partition plate having a lower half partition plate division surface capable of abutting against the upper half partition plate division surface on an inner peripheral side of a lower half casing having a lower half casing division surface capable of abutting against the upper half casing division surface so as to form a lower half assembly.

Steam turbine assembling method, steam turbine, and upper half assembly

A steam turbine assembling method includes: disposing an upper half partition plate having an upper half partition plate division surface on an inner peripheral side of an upper half casing having an upper half casing division surface to form an upper half assembly; and, after disposing a lower half partition plate having a lower half partition plate division surface capable of abutting against the upper half partition plate division surface on an inner peripheral side of a lower half casing having a lower half casing division surface capable of abutting against the upper half casing division surface, fixing a lower half position defining portion to the lower half partition plate in a state where a lower half abutment surface abuts against the lower half casing division surface and the lower half partition plate division surface to form a lower half assembly.

The present invention provides a steam turbine blade and a steam turbine capable of further improving efficiency. A steam turbine blade includes a proximal end portion Twhich is formed in a blade shape having an intermediate reaction degree, an intermediate portion Twhich is formed in a blade shape having a low reaction degree; and a distal end portion Twhich is formed in a blade shape having a high reaction degree.

Steam turbine blade and steam turbine

A method for measuring a pre-twist amount of a blade includes a spreading dimension acquiring step, a misalignment acquiring step, a correcting step, and a pre-twist amount acquiring step. In the spreading dimension acquiring step, circumferential spreading dimensions of each shroud of two rotor blades are acquired. In the misalignment acquiring step, a misalignment amount in the direction of the axis between the shrouds of two rotor blades adjacent to each other in the circumferential direction is measured. In the correcting step, the spreading dimension acquired in the spreading dimension acquiring step is corrected on the basis of the misalignment amount acquired by the misalignment acquiring step. In the pre-twist amount acquiring step, the pre-twist amount of the blade is acquired on the basis of the spreading dimension corrected in the correcting step.

Method for measuring pre-twist amount of blade, and method for manufacturing rotor

A turning device includes: a driving source; a main drive gear rotationally driven by the driving source; a driven gear that engages with the main drive gear and is rotated integrally with a rotated body, wherein the turning device rotationally drives the driving source to rotate the rotated body; a movement mechanism that causes the main drive gear to reciprocate in an axial direction between a separated position at which engagement of the main drive gear and the driven gear is released and an engaged position at which the main drive gear engages with the driven gear; a forward rotation mechanism that intermittently rotates the main drive gear; and a reverse rotation mechanism that intermittently rotates the main drive gear in a direction opposite to a direction by the forward rotation mechanism.

Turning device

A steam turbine includes: a stator vane disposed in a cylinder inside a casing through which steam flows from an upstream side toward a downstream side; and a stationary support that supports the stator vane relative to the casing. The stationary support includes: a first supporting body fixed to the casing, a second supporting body that connects the stator vane to the first supporting body; and a replacement body detachably disposed between the first supporting body and the second supporting body on the upstream side.

Steam turbine

The present invention relates to a bearing device () provided with: a plurality of bearing pads () arranged between the outer peripheral surface of a turbine rotor () and the inner peripheral surface of a bearing housing () so as to be separated from each other in the circumferential direction of the rotor (), the bearing housing () externally surrounding the rotor (), the bearing pads () being supported on the inner peripheral surface of the bearing housing () and rotatably supporting the rotor (); and a thermometer () provided to at least one of the plurality of bearing pads (). The thermometer-equipped bearing pad () provided with the thermometer () has: a pad body () disposed facing the outer peripheral surface of the rotor (); and a pair of pad shoulders () having different shapes and protruding from the pad body () to both sides of the bearing housing () in the direction of the center axis (O) thereof. The bearing housing () has a pair of housing shoulders () having a shape corresponding to that of the pair of pad shoulders ().

Bearing device and rotary machine

A turning device includes: a pinion gear having spur teeth that mesh with a wheel gear provided on a rotary shaft; an arm member that rotatably supports the pinion gear; an ON/OFF mechanism that operates the arm member such that the pinion is brought close to the wheel gear, in a meshed position, with respect to the wheel gear and such that the pinion is separated radially outward from the wheel gear, in a retracted position; and a supporting device that supports the pinion in an axial direction of the pinion.

Growing community of inventors

Hiroshima, Japan

Yuichi Sasaki