Monitoring and control device for rotating machine, rotating machine equipment, monitoring and control method for rotating machine, and monitoring and control program for rotating machine

1 . A monitoring and control device for a rotating machine, the monitoring and control device being for monitoring or controlling a clearance of a rotating machine including a vehicle cabin that accommodates a rotating part and a stationary part, the monitoring and control device comprising:

an acquisition unit including a processor and configured to acquire a plurality of temperatures at a plurality of positions of the vehicle cabin; and

an index calculation unit including a processor and configured to calculate an index indicating a displacement of the vehicle cabin in an up-down direction based on the plurality of temperatures;

wherein the vehicle cabin includes an upper-half portion having an upper flange and an upper shell, and a lower-half portion having a lower flange fastened to the upper flange and a lower shell, and

wherein the index calculation unit is configured to calculate the index including a linear combination of at least two of a first term related to a temperature difference between the upper shell and the lower shell, a second term related to a temperature difference between a shell portion including the upper shell or the lower shell and a flange portion including the upper flange or the lower flange, a third term related to a temperature difference between the upper flange and the lower flange, a fourth term related to a thermal elongation amount of a vehicle cabin support table on which a protrusion portion protruding in an axial direction is placed, a fifth term related to a displacement of the rotating part of the rotating machine in an up-down direction, and a sixth term related to an output of the rotating machine.

2 . The monitoring and control device for a rotating machine according to claim 1 ,

wherein

the acquisition unit is configured to acquire a temperature of the upper shell and a temperature of the lower shell, and

the index calculation unit is configured to calculate the index including the first term related to a temperature difference between the upper shell and the lower shell.

3 . The monitoring and control device for a rotating machine according to claim 1 ,

wherein

the acquisition unit is configured to acquire a temperature of the shell portion including the upper shell or the lower shell and a temperature of the flange portion including the upper flange or the lower flange, and

the index calculation unit is configured to calculate the index including the second term related to a temperature difference between the shell portion and the flange portion.

4 . The monitoring and control device for a rotating machine according to claim 1 ,

wherein

the acquisition unit is configured to acquire a temperature of the upper flange and a temperature of the lower flange, and

the index calculation unit is configured to calculate the index including the third term related to a temperature difference between the upper flange and the lower flange.

5 . The monitoring and control device for a rotating machine according to claim 1 ,

wherein

the index calculation unit is configured to calculate the index including the fourth term related to a thermal elongation amount of a vehicle cabin support table on which the protrusion portion is placed.

6 . The monitoring and control device for a rotating machine according to claim 1 , wherein the index calculation unit is configured to calculate, based on a temperature of a bearing pedestal accommodating a bearing of the rotating part and a rotation speed of the rotating part, the index including the fifth term related to a displacement of the rotating part of the rotating machine in an up-down direction.

7 . The monitoring and control device for a rotating machine according to claim 1 ,

wherein the index calculation unit is configured to calculate the index including a sixth term related to an output of the rotating machine.

8 . The monitoring and control device for a rotating machine according to claim 1 , further comprising:

a control unit including a processor and configured to adjust a shape or a position of the vehicle cabin based on the index calculated by the index calculation unit.

9 . The monitoring and control device for a rotating machine according to claim 8 ,

wherein the control unit is configured to adjust the shape or the position of the vehicle cabin such that the index calculated by the index calculation unit is within a specified range when the index is out of the specified range.

10 . The monitoring and control device for a rotating machine according to claim 8 ,

wherein the control unit is configured to control a temperature adjustment unit for heating or cooling at least a part of the vehicle cabin or a vehicle cabin support portion supporting the vehicle cabin such that the index is within a specified range.

11 . Rotating machine equipment comprising:

a rotating machine including a vehicle cabin that accommodates a rotating part and a stationary part; and

the monitoring and control device according to claim 1 for monitoring or controlling a clearance of the rotating machine.

12 . A monitoring and control method for a rotating machine, the monitoring and control method being for monitoring or controlling a clearance of a rotating machine including a vehicle cabin that accommodates a rotating part and a stationary part, the monitoring and control method comprising:

a step of acquiring a plurality of temperatures at a plurality of positions of the vehicle cabin; and

a step of calculating an index indicating a displacement of the vehicle cabin in an up-down direction based on the plurality of temperatures,

wherein the vehicle cabin includes an upper-half portion having an upper flange and an upper shell, and a lower-half portion having a lower flange fastened to the upper flange and a lower shell, and

wherein the step of calculating the index comprises calculating the index including a linear combination of at least two of a first term related to a temperature difference between the upper shell and the lower shell, a second term related to a temperature difference between a shell portion including the upper shell or the lower shell and a flange portion including the upper flange or the lower flange, a third term related to a temperature difference between the upper flange and the lower flange, a fourth term related to a thermal elongation amount of a vehicle cabin support table on which a protrusion portion protruding in an axial direction is placed, a fifth term related to a displacement of the rotating part of the rotating machine in an up-down direction, and a sixth term related to an output of the rotating machine.

13 . A monitoring and control program for a rotating machine, the monitoring and control program being for monitoring or controlling a clearance of a rotating machine including a vehicle cabin that accommodates a rotating part and a stationary part, the monitoring and control program causing a computer including a processor to execute:

a procedure of acquiring a plurality of temperatures at a plurality of positions of the vehicle cabin; and

a procedure of calculating an index indicating a displacement of the vehicle cabin in an up-down direction based on the plurality of temperatures,

wherein the vehicle cabin includes an upper-half portion having an upper flange and an upper shell, and a lower-half portion having a lower flange fastened to the upper flange and a lower shell, and

wherein the procedure of calculating the index comprises calculating the index including a linear combination of at least two of a first term related to a temperature difference between the upper shell and the lower shell, a second term related to a temperature difference between a shell portion including the upper shell or the lower shell and a flange portion including the upper flange or the lower flange, a third term related to a temperature difference between the upper flange and the lower flange, a fourth term related to a thermal elongation amount of a vehicle cabin support table on which a protrusion portion protruding in an axial direction is placed, a fifth term related to a displacement of the rotating part of the rotating machine in an up-down direction, and a sixth term related to an output of the rotating machine.