Mitsubishi Power, Ltd.

Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Kenji Yashirodai

Koji Ishibashi

Shunsuke Mizumi

Takeshi Kudo

Hiroshi Yamauchi

Jie Huang

Juichi Kodera

A method and system for measuring a turbine shape is provided in which an appropriate measurement accuracy can be achieved that is sufficient to prevent a failure to recognize features of shape of a measurement object, with extension of a measurement time suppressed. In a turbine including casings, recesses and protrusions on flange surfaces of the casings are measured at measurement intervals M set on the basis of the entire length L of flange portions in an axial direction, the number of bolts N joining the flange portions, and intervals between the bolts in the axial direction of the flange portions.

Method and system for measuring turbine shape

In assembling a turbine including: a casing consisting of an upper half part and a lower half part fastened together by bolts; a stationary body accommodated in the casing and supported by the lower half part; and a rotary body supported by a plurality of bearings so as to be situated on the inner side of the stationary body, there are executed: a procedure of reading a finite element model of the three-dimensional configuration of the turbine; a reading procedure of reading actual measurement information on the three-dimensional configuration of the upper half part and the lower half part of the casing in the open state; a model correction procedure of reflecting actual measurement information of an evaluated portion that is a specific part of the casing in the finite element model and generating a correction model obtained through correction of the finite element model; a deformation amount estimation procedure of estimating the movement amount of the evaluated portion generated when the upper half part and the lower half part of the casing are fastened together by the bolts through simulation using the correction model; and an output procedure of outputting an estimated value of the movement amount to an output device.

Turbine assembly support program, turbine assembly support system, and turbine assembly method using corrected finite element model

The invention is directed to maintaining the accuracy in the positional adjustment of a stationary part while shortening a turbine assembly period through the omission of the temporary assembly of a casing. A method of assembling includes gaining measurement data on the configuration of a casing upper half part not fastened to a casing lower half part; gaining measurement data on the configuration of the casing lower half part in an open state in which the casing upper half part and a rotor are removed and in which a stationary part is mounted; comparing measurement data on the configuration of the casing upper half part and the casing lower half part with simulation data on the configuration of the casing upper half part and the casing lower half part previously obtained to select simulation data closest to the measurement data on the configuration of the casing upper half part and the casing lower half part; calculating, based on the selected simulation data, a change amount of the configuration of the casing upper half part and the casing lower half part when the casing upper half part is fastened to the casing lower half part in the open state; and adjusting the installation position of the stationary part inside the casing taking into account the calculated change amount.

Method of assembling turbine, assembly work supporting system, and control program

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Tokyo, Japan

Kenji Yashirodai