JP6436639B2 - Rotating machine and rotating machine control method - Google Patents

Description

  The present invention relates to a rotary machine that rotates a rotor and a rotary machine control method.

  As a rotating machine for rotating the rotor, there are various machines such as a steam turbine and a compressor. For example, in a steam turbine, an inner casing is provided in an outer casing, a steam inlet portion is provided in an upper portion, and a rotor is rotatably supported in a central portion. In this rotor, a plurality of moving blades are fixed in multiple stages, while stationary blades are fixed in multiple stages on a blade ring supported by the internal casing, and the multistage moving blades and stationary blades are alternately arranged. Yes. When the steam enters the internal casing from the steam inlet, the steam turbine is supplied to the multistage stationary blades and the moving blades, thereby rotating the rotor via the multistage moving blades.

  Here, the steam turbine is relatively disposed between the rotor and the inner casing by high-temperature steam flowing in a space between the inner casing and the rotor, that is, a space in which multistage moving blades and stationary blades are alternately arranged. May cause a difference in thermal elongation due to thermal expansion. On the other hand, for example, Patent Document 1 discloses a casing position adjustment device for a steam turbine that includes a mechanism that can move the position of the inner casing in the axial direction of the rotor and adjust the position of the inner casing with respect to the rotor. Is described.

International Publication No. 2012/132208

  In the steam turbine described in Patent Document 1 described above, it is possible to adjust the position of the rotor in the axial direction, and by suppressing the displacement of the relative position between the rotor in the axial direction and the internal casing, The displacement of the relative position between the blade) and the stationary part (inner casing and stationary blade) is suppressed. However, the casing position adjusting device of the steam turbine can suppress the shift of the relative position of the rotor in the axial direction, but the shift between the rotor and the casing may occur in another direction. When a deviation occurs between the rotor and the passenger compartment, the clearance (gap) provided between the rotating part and the fixed part cannot be reduced in order to allow the deviation. Become.

  This invention solves the subject mentioned above, and it aims at providing the rotary machine and rotary machine control method which can improve the operating efficiency of a rotary machine more.

  The rotating machine of the present invention for achieving the above object includes a rotor, a moving blade fixed to the rotor, a casing disposed facing the moving blade, and a stationary blade fixed to the inner surface, A bearing that is disposed outside the vehicle compartment, supports the rotor, and is supported by the gantry, a moving unit that moves the position of the vehicle chamber relative to the gantry in the radial direction of the rotor, and detects an operating state. It has a detection part and a control part which controls the movement part based on the result detected by the detection part, and controls the relative position of the compartment and the rotor.

  The rotating machine configured as described above can suppress the positional deviation in the radial direction between the rotor and the vehicle interior by controlling the relative position between the rotor and the vehicle interior in the radial direction of the rotor according to the operating state. . As a result, the radial relative positions of the rotating part and the fixed part can be brought close to each other, the gap between the rotating part and the fixed part can be reduced, and the operating efficiency of the rotating machine can be further increased. Can be improved.

  Moreover, it is preferable that the said detection part contains the rotational speed detection part which detects the rotational speed of the said rotor. Thus, the relative position can be adjusted according to the radial position that varies with the rotation of the rotor.

  Moreover, it is preferable to further include a bearing box that houses the bearing, and the detection unit includes a temperature detection unit that detects a temperature of the bearing box. Thereby, a relative position can be adjusted according to the change by the thermal expansion of the bearing which arises with the change of temperature.

  The detection unit includes an atmospheric pressure detection unit that detects an atmospheric pressure in a condenser connected to the passenger compartment, and the control unit is based on a degree of vacuum in the condenser detected by the atmospheric pressure detection unit. It is preferable to control the operation of the moving unit. Thereby, the change of the relative position which arises by the deformation | transformation of a mount frame by the vacuum degree raise in the condenser connected to a rotary machine can be suppressed.

  In addition, the vehicle compartment is an internal vehicle compartment, further includes an external vehicle compartment that covers the internal vehicle compartment, and the moving unit is disposed between the internal vehicle compartment and the external vehicle compartment. Is preferred. As a result, the position of the internal casing that maintains the stationary blades facing the rotor blades can be suitably controlled.

  The moving unit is preferably hydraulically operated. Thereby, the position of the passenger compartment can be controlled with high accuracy.

  To achieve the above object, the present invention includes a rotor, a moving blade fixed to the rotor, a casing disposed facing the moving blade, and a stationary blade fixed to the inner surface, and the casing. A rotating machine control method for controlling a rotating machine having a bearing supported by a pedestal, the rotor being supported on the rotor, the operating state being detected, and based on the detected result, the rotor The position of the compartment with respect to the gantry in the radial direction is moved, and the relative position between the compartment and the rotor is controlled.

  The rotating machine control method having the above configuration suppresses the positional deviation in the radial direction between the rotor and the vehicle interior by controlling the relative position between the rotor and the vehicle interior in the radial direction of the rotor according to the operating state. Can do. As a result, the radial relative positions of the rotating part and the fixed part can be brought close to each other, the gap between the rotating part and the fixed part can be reduced, and the operating efficiency of the rotating machine can be further increased. Can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, the position shift in the radial direction of a rotor and a vehicle interior can be suppressed by controlling the relative position of a rotor and a vehicle interior in the radial direction of a rotor according to a driving | running state. As a result, the radial relative positions of the rotating part and the fixed part can be brought close to each other, the gap between the rotating part and the fixed part can be reduced, and the operating efficiency of the rotating machine can be further increased. Can be improved.

FIG. 1 is a schematic diagram showing a schematic configuration of a power generation system having a steam turbine which is an embodiment of the rotating machine of the present invention. FIG. 2 is a cross-sectional view illustrating a schematic configuration of the steam turbine. FIG. 3 is a cross-sectional view illustrating a schematic configuration of the steam turbine. FIG. 4 is a perspective view showing a schematic configuration of the gantry. FIG. 5 is a schematic diagram showing a schematic configuration of the height adjusting mechanism. FIG. 6 is a flowchart for explaining the operation of the steam turbine. FIG. 7 is a flowchart for explaining the operation of the steam turbine.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by this Example, Moreover, when there exists multiple Example, what comprises combining each Example is also included. In the following embodiments, the rotating machine is described as a steam turbine of a power generation system, but can be applied to various devices such as a compressor and a turbine.

  FIG. 1 is a schematic diagram showing a schematic configuration of a power generation system having a steam turbine which is an embodiment of the rotating machine of the present invention. A power generation system 10 shown in FIG. 1 includes a steam supply source 12, a steam turbine (rotary machine) 14, a condenser 16, a heat medium circulation line 18, a generator 20, a stand 22, a vacuum pump 24, Have. In addition, although the electric power generation system of a present Example uses water (steam) as a heat medium, various liquids and fluids can be used.

  The steam supply source 12 is a device that supplies steam to the steam turbine 14. The steam supply source 12 includes a boiler that heats water as a heat medium and generates steam, a heat exchanger, or a steam turbine that distributes steam at a higher temperature and pressure than the steam turbine 14. The steam turbine 14 is rotated by steam supplied from the steam supply source 12. The steam turbine 14 is supplied with steam from the end face on the upper side in the vertical direction by the steam supply source 12 and discharges steam from the end face on the lower side in the vertical direction. The steam turbine 14 will be described later.

  The condenser 16 is disposed on the lower side in the vertical direction of the steam turbine 14 and is supplied with the steam that has passed through the steam turbine 14. The condenser 16 condenses the steam supplied from the steam turbine 14 into condensed water. The heat medium circulation line 18 supplies the condensate stored in the condenser 16 to the steam supply source 12 by a pump (not shown). Thus, in the power generation system 10, the heat medium is circulated in the order of the steam supply source 12, the steam turbine 14, the condenser 16, and the heat medium circulation line 18.

  The generator 20 is connected to the steam turbine 14. The generator 20 generates power by rotating the steam turbine 14. The gantry 22 is a base that supports the steam turbine 14 and is made of concrete or the like. The vacuum pump 24 is connected to the condenser 16 to bring the condenser 16 into a vacuum state or a state close to a vacuum.

  Next, the steam turbine 14 will be described with reference to FIGS. 1 to 5. FIG. 2 is a cross-sectional view illustrating a schematic configuration of the steam turbine. FIG. 3 is a cross-sectional view illustrating a schematic configuration of the steam turbine. FIG. 4 is a perspective view showing a schematic configuration of the gantry. FIG. 5 is a schematic diagram showing a schematic configuration of the height adjusting mechanism.

  The steam turbine 14 includes an outer casing 30, an inner casing 32, a stationary blade 34, a rotor 36, a moving blade 38, a bearing 40, a bearing box 42, a lubricating oil supply device 44, and a control device 50. A temperature detection unit 52, an atmospheric pressure detection unit 54, a rotation speed detection unit 56, and a height adjustment mechanism 60.

  The external casing 30 is a housing and is supported by the gantry 22. In the outer casing 30, an inner casing 32, a stationary blade 34, and a rotor 36 including a moving blade 38 are arranged. The outer casing 30 has an outer casing upper half 30a and an outer casing lower half 30b fixed with a flange or the like to form a space inside. The inner casing 32 is arranged inside the outer casing 30 so as to surround the rotor 36. The internal compartment 32 is supported by the external compartment 30 via the height adjustment mechanism 60. In the internal compartment 32, the internal compartment upper half 32a and the internal compartment lower half 32b are fixed by a flange or the like to form a space inside.

  The plurality of stationary blades 34 are fixed to the inner surface of the internal casing 32, that is, the surface facing the rotor 36. A plurality of the stationary blades 34 are arranged so as to surround the rotor 36 and form a one-stage stationary blade unit. In the moving blade 38, the stationary blade units are arranged in multiple stages in the axial direction.

  The rotor 34 is inserted into the outer compartment 30 and the inner compartment 32. Both ends of the rotor 34 protrude outside the outer casing 30, and one end of the rotor 34 is connected to the generator 20. The plurality of moving blades 38 are disposed on the outer periphery of the rotor 34. A plurality of moving blades 38 are arranged in the circumferential direction of the rotor 34 to form a one-stage moving blade unit. The rotor blades 38 are provided with rotor blade units in multiple stages in the axial direction. Here, in the steam turbine 14, the stationary blades 34 and the moving blades 38 are alternately arranged in the axial direction of the rotor 34.

  The bearing 40 is disposed on the gantry 22 outside the outer casing 30. Specifically, as shown in FIGS. 3 and 4, the bearing 40 is disposed on both portions of the rotor 36 that protrude from the external casing 30. The bearing 40 supports the rotor 36 in a rotatable state. The bearing box 42 is disposed in each of the bearings 40 and covers the periphery of the bearing 40. The lubricating oil supply device 44 supplies lubricating oil to the bearing 40 and forms an oil film between the rotating portion of the bearing 40 and the fixed portion. As shown in FIG. 4, the gantry 22 is disposed so as to surround a portion where the external casing 30 is installed. In other words, the gantry 22 is formed as a frame in which a portion where the external compartment 30 is disposed is an opening.

  In the steam turbine 14, a steam supply port 46 is formed in the outer casing 30 and the inner casing 32 so as to penetrate the upper surface in the vertical direction. The steam supply port 46 is connected to the steam supply source 12 via a pipe or the like. Further, the steam turbine 14 has a steam discharge port 48 formed on the lower surface of the external casing 30 in the vertical direction. The steam outlet 48 is connected to the condenser 16.

  When the steam enters the internal casing 32 from the steam supply port 46 during operation, the steam is spouted to the moving blade 38 through the stationary blade 34, thereby rotating the rotor 36 and coupled to the rotor 36. The generated generator 20 is driven. In the steam turbine 14, steam jetted to the moving blade 38 through the stationary blade 34 is supplied to the condenser 16 from the steam discharge port 48.

  The control device 50 adjusts the relative position between the rotor 36 and the internal casing 32 in the vertical direction. Specifically, the control device 50 controls the operation of the height adjustment mechanism 60 based on the detection results of the temperature detection unit 52, the atmospheric pressure detection unit 54, and the rotation speed detection unit 56, and the internal compartment 32 with respect to the gantry 22. Adjust the vertical position of. Here, the vertical direction of the internal casing 32 is one direction of a plane orthogonal to the axis of the rotor 36 and is a direction included in the radial direction of the rotor 36.

  The temperature detector 52 detects the temperature in the bearing box 42. The temperature detector 52 is disposed for each bearing box 42, that is, for each of the two bearing boxes 42. The temperature detection unit 52 sends the detected temperature information in the bearing box 42 to the control device 50. The atmospheric pressure detector 54 is disposed in the condenser 16 and detects the atmospheric pressure (degree of vacuum) in the condenser 16. The atmospheric pressure detection unit 54 sends information on the detected atmospheric pressure (degree of vacuum) in the condenser 16 to the control device 50. The rotation speed detector 56 detects the rotation speed of the rotor 36. The rotational speed detector 56 sends the detected rotational speed of the rotor 36 to the control device 50. The rotation speed detector 56 of the present embodiment detects the rotation speed of the rotor 36 as the rotation speed. As the temperature detection unit 52, the atmospheric pressure detection unit 54, and the rotation speed detection unit 56, various measuring devices can be used.

  The height adjusting mechanism 60 includes a portion in which the inner casing 32 is supported by the outer casing 30, specifically, as shown in FIG. It is arrange | positioned at four places of the part which 22 and overlap. As shown in FIG. 2, the outer casing 30 and the inner casing 32 overlap with the pedestal 22, the outer casing 30 is disposed on the pedestal 22, and the inner casing 32 is located on the upper side in the vertical direction. Has been placed. The height adjusting mechanisms 60 arranged at four locations have the same configuration.

  As shown in FIG. 5, the height adjustment mechanism 60 includes a hydraulic jack 62 and a hydraulic oil supply mechanism 64. The hydraulic jack 62 is disposed between the outer casing 30 and the inner casing 32. In the external casing 30 where the hydraulic jack 62 is installed, the lower surface in the vertical direction is in contact with the gantry 22. The hydraulic jack 62 is installed on the upper surface of the outer casing 30 in the vertical direction, and supports the inner casing 32 from the lower surface of the inner casing 32. The hydraulic oil supply mechanism 64 supplies hydraulic oil to the hydraulic jack 62. The height adjustment mechanism 60 controls the hydraulic oil supplied from the hydraulic oil supply mechanism 64 to the hydraulic jack 62, thereby moving the position of the internal casing 32 in the vertical direction with respect to the external casing 30 and the gantry 22.

  Next, operation | movement of the height adjustment mechanism 60 of the steam turbine 14 is demonstrated using FIG. FIG. 6 is a flowchart for explaining the operation of the steam turbine. The processing shown in FIG. 6 can be realized by executing arithmetic processing by the control device 50. The control device 50 detects the temperature in the bearing box 42 (step S12). Specifically, the temperature detection unit 52 detects the temperature inside the bearing box 42. The control device 50 calculates a control value based on the temperature detected by the temperature detection unit 52 (step S14). The control value is an instruction value for controlling the height adjustment mechanism 60, and is a value indicating the amount by which the internal casing 32 is moved in the height direction (vertical direction) by the height adjustment mechanism 60. The control values calculated in the process of FIG. 6 are the same in other cases. The control device 50 stores the relationship between the temperature in the bearing box 42 and the amount of change in the relative position between the internal casing 32 and the rotor 36. Based on the detected temperature and the relationship, the control value is calculated. calculate.

  Next, the control device 50 detects the rotational speed of the rotor 36 (step S16). Specifically, the rotation speed detection unit 56 detects the rotation speed of the rotor 36. The control device 50 calculates a control value based on the rotational speed of the rotor 36 detected by the rotational speed detection unit 56 (step S18). The control device 50 stores the relationship between the rotational speed of the rotor 36 and the amount of change in the relative position between the internal casing and the rotor. Based on the detected rotational speed of the rotor 36 and the relationship, a control value is stored. Is calculated.

  Next, the control apparatus 50 detects the vacuum degree of the condenser 16 (step S20). Specifically, the atmospheric pressure detection unit 54 detects the degree of vacuum inside the condenser 16. The control device 50 calculates the degree of vacuum inside the condenser 16 based on the atmospheric pressure detected by the atmospheric pressure detection unit 54. The relationship between the detection result and the degree of vacuum may be stored in the control device 50 in advance. The control device 50 calculates a control value based on the degree of vacuum in the condenser (step S22). The control device 50 stores the relationship between the degree of vacuum in the condenser and the amount of change in the relative position between the internal casing 32 and the rotor 26, and controls based on the detected degree of vacuum and the relationship. Calculate the value.

  Next, the control apparatus 50 adjusts the height of the internal compartment 32 based on the sum of the control values (step S24). That is, the control device 50 adds the control value based on the temperature in the bearing box 42, the control value based on the rotational speed of the rotor, and the control value based on the degree of vacuum in the condenser, and the total value Based on the above, the operation of the height adjustment mechanism 60 is controlled to adjust the height (position in the vertical direction) of the internal casing 32.

  The control device 50 repeatedly executes the process shown in FIG. 6 to adjust the position of the internal casing 32 in the vertical direction with respect to the gantry 22, so that the rotor 36 supported by the gantry 22 via the bearing 40 and The relative position of the internal casing 32 in the vertical direction is adjusted. In addition, the order which performs the process based on the temperature of step S12 and step S14, the process based on the rotational speed of step S16 and step S18, and the process based on the degree of vacuum of step S20 and step S22 is limited to this order. Instead, they may be executed in parallel or in different orders.

  FIG. 7 is a flowchart for explaining the operation of the steam turbine. FIG. 7 shows an example of processing until the stopped steam turbine is operated. A specific example of the adjusting operation using the height adjusting mechanism 60 will be described together with an example of processing until the stopped steam turbine is operated, with reference to FIG.

  The steam turbine 14 starts supplying lubricant to the bearing 40 (step S40). That is, lubricating oil is supplied to the bearing 40 from the lubricating oil supply device 44, and an oil film is formed between the rotating portion and the fixed portion of the bearing 40. The steam turbine 14 jacks up the rotor 36 by supplying lubricating oil to the bearing 40 and forming an oil film.

  When the supply of the lubricating oil to the bearing 40 is started, the steam turbine 14 starts the rotation of the rotor 36 (step S42). When the rotation of the rotor 36 is detected, the control device 50 changes the control value based on the rotation speed. As the steam turbine 14 rotates, an oil film is formed, and the steam turbine 14 floats more than the state in which the rotor 36 is stopped. The control device 50 performs control based on the rotational speed of the rotor 36, thereby moving the internal casing 32 upward in the vertical direction by the height adjustment mechanism 60. Thereby, the fluctuation | variation of the relative position in the vertical direction of the rotor 36 and the internal compartment 32 which floated by oil film formation can be reduced.

  When the rotation of the rotor 36 is started, the steam turbine 14 evacuates the condenser 16 (step S44). Specifically, the vacuum pump 24 is used to suck the air in the condenser 16 and increase the degree of vacuum. When a change in the degree of vacuum in the condenser 16 is detected, the control device 50 changes the control value based on the degree of vacuum. In the steam turbine 14, when the degree of vacuum in the condenser 16 increases (closer to a vacuum), the gantry 22 is deformed, and the outer casing 30 and the inner casing 32 supported by the pedestal 22 are connected to the condenser. It is pulled to the 16 side. The control device 50 moves the internal casing 32 upward in the vertical direction by the height adjustment mechanism 60 by performing control based on the degree of vacuum in the condenser 16. Thereby, the fluctuation | variation of the relative position in the vertical direction of the rotor 36 and the internal compartment 32 which was displaced by the raise of the vacuum degree in the condenser 16 can be reduced.

  When steam is supplied to the steam turbine 14 (step S46), the rotation of the rotor 36 starts. Here, the temperature in the bearing box 42 increases due to frictional heat that increases in the bearing 40 as the rotational speed of the rotor 34 increases. When a change in temperature in the bearing box 42 is detected, the control device 50 changes the control value based on the temperature. In the steam turbine 14, when the temperature in the bearing box 42 rises, the bearing 40 is thermally expanded, and the position of the rotor 36 with respect to the gantry 22 is displaced. The control device 50 moves the internal casing 32 in the vertical direction by the height adjustment mechanism 60 by performing control based on the temperature in the bearing box 42. Thereby, the fluctuation | variation of the relative position in the vertical direction of the rotor 34 and the internal compartment 32 which the temperature in the bearing box 42 displaced by the raise can be reduced.

  After the rotor 34 reaches a predetermined operating rotational speed (step S48), power generation is started by the generator 20 (step S50). When the temperature in the bearing box 42 changes, the rotation speed of the rotor 34 changes, or the degree of vacuum in the passenger compartment changes due to the operation of the steam turbine 14, the control device 50 adjusts the height according to the change. The position of the internal casing 32 in the height direction is adjusted by the mechanism 60.

  The steam turbine 14 is provided with a height adjusting mechanism 60 that adjusts the vertical position of the internal casing 32 with respect to the rotor 36, so that the relative position between the rotor 36 and the internal casing 32 follows the rotor 36. The position of the internal casing 32 in the vertical direction can be adjusted. Thereby, the shift | offset | difference of the position of the vertical direction of the internal compartment 32 with respect to the rotor 36 can be suppressed. Since the displacement of the position of the rotor 36 and the internal casing 32 can be suppressed, the rotor 36 and the moving blade 38 that are the rotating parts of the steam turbine 14, and the internal casing 32 and the stationary blade 34 that are the fixed parts (stationary parts). Deviation of the relative position in the vertical direction can be suppressed. Thereby, the clearance in the vertical direction of the rotating part and the fixed part can be reduced while suppressing contact between the rotating part and the fixed part. Thus, by reducing the clearance in the vertical direction between the rotating part and the fixed part, the clearance between the rotating part and the fixed part in the radial direction of the rotor 36 can be reduced, and the energy loss can be reduced. Thereby, the steam turbine 14 can be operated more efficiently.

  Further, the steam turbine 14 controls the height adjustment mechanism 60 based on the temperature in the bearing box 42 detected by the temperature detection unit 52, so that the rotor 36 according to the expansion and contraction caused by the temperature change of the bearing 40. The position of the internal compartment 32 can be adjusted corresponding to the position variation. Thereby, the clearance between the rotating part and the fixed part can be reduced, and the energy loss can be reduced.

  Further, the steam turbine 14 controls the height adjustment mechanism 60 based on the degree of vacuum in the condenser 16 detected by the atmospheric pressure detection unit 54, whereby the condenser 16 is decompressed and becomes a vacuum state. The position of the internal casing 32 can be adjusted in accordance with the change in the position of the internal casing 32 supported by the gantry 22 by the generated load. Thereby, the clearance between the rotating part and the fixed part can be reduced, and the energy loss can be reduced.

  In addition, the steam turbine 14 controls the height adjustment mechanism 60 based on the rotation speed of the rotor 36 detected by the rotation speed detection unit 56, so that the rotation part of the bearing 40 that varies according to the rotation speed of the rotor 36 The position of the inner casing 32 can be adjusted in response to the position variation of the rotor 36 according to the variation in the thickness of the oil film between the fixed portion. Thereby, the clearance between the rotating part and the fixed part can be reduced, and the energy loss can be reduced.

  Further, the steam turbine 14 according to the present embodiment controls the operation of the height adjustment mechanism 60 using the three detection results of the temperature detection unit 52, the atmospheric pressure detection unit 54, and the rotation speed detection unit 56, thereby the rotor 36. However, the present invention is not limited to this. The steam turbine 14 may be controlled using at least one detection result among the three detection results of the temperature detection unit 52, the atmospheric pressure detection unit 54, and the rotation speed detection unit 56. In addition to the three detection results of the temperature detection unit 52, the atmospheric pressure detection unit 54, and the rotation speed detection unit 56, the detection result of the operation state that causes the fluctuation of the relative position in the vertical direction between the rotor 36 and the internal casing 32 is displayed. It may be used to control the height adjustment mechanism 60.

  In the present embodiment, the vehicle compartment has a double compartment structure in which the internal compartment 32 and the external compartment 30 are configured. However, the structure of the compartment is not limited to this. The vehicle compartment may have a structure in which the stationary blade 34 is attached to the inner wall of the structure exposed to the outside. Moreover, although the steam turbine 14 of a present Example was made into the downflow type | mold which supplies a vapor | steam from the vertical direction upper side and discharges the offing of the coast of the vertical direction, it is not limited to this. For example, the steam turbine 14 may supply steam from the horizontal direction and discharge the steam in the horizontal direction.

  Moreover, although the height adjustment mechanism of the said Example was arrange | positioned in the external vehicle interior, this invention is not limited to this. The height adjustment mechanism may be connected to the internal compartment and provided with an arm that penetrates the external compartment and adjust the relative position between the internal compartment and the rotor by moving the arm up and down. . The portion through which the arm of the external compartment passes is a mechanism that is sealed so that the arm can move up and down. Thereby, even if it is the structure where the arm penetrated, it can control that a heat carrier (steam) leaks from the inside of an external compartment outside.

DESCRIPTION OF SYMBOLS 10 Power generation system 12 Steam supply source 14 Steam turbine (rotary machine)
16 Condenser 18 Heating medium circulation line 20 Generator 22 Base 24 Vacuum pump 30 External compartment 32 Internal compartment 34 Stator blade
36 Rotor 38 Rotor blade 40 Bearing 42 Bearing box 44 Lubricating oil supply device 46 Steam supply port 48 Steam discharge port 50 Control device 52 Temperature detection unit 54 Atmospheric pressure detection unit 56 Rotational speed detection unit 60 Height adjustment mechanism 62 Hydraulic jack 64 Hydraulic oil Supply mechanism

Claims (6)

A rotor,
A moving blade fixed to the rotor;
A vehicle compartment disposed facing the moving blade and having a stationary blade fixed to the inner surface,
A bearing disposed outside the passenger compartment, supporting the rotor and supported by a gantry;
A moving unit that moves the position of the vehicle compartment with respect to the gantry in the radial direction of the rotor;
A detection unit for detecting an operation state;
A control unit that controls the moving unit based on the result of the operating state detected by the detection unit, and controls the relative position between the vehicle compartment and the rotor;
The vehicle compartment is an internal vehicle compartment,
Further comprising an external compartment covering the internal compartment,
The moving part is disposed inside the external compartment and between the internal compartment and the external compartment ,
The inner casing is rotary machine through the outer casing and the moving part, characterized Rukoto supported by the cradle.   The rotating machine according to claim 1, wherein the detection unit includes a rotation speed detection unit that detects a rotation speed of the rotor. A bearing box that houses the bearing;
The rotating machine according to claim 1, wherein the detection unit includes a temperature detection unit that detects a temperature of the bearing box. The detection unit includes an atmospheric pressure detection unit that detects an atmospheric pressure in a condenser connected to the passenger compartment,
The said control part controls the operation | movement of the said moving part based on the vacuum degree in the said condenser detected by the said atmospheric | air pressure detection part, It is any one of Claim 1 to 3 characterized by the above-mentioned. Rotating machine.   The rotating machine according to any one of claims 1 to 4, wherein the moving unit is hydraulically operated. A rotor, a moving blade fixed to the rotor, an inner casing arranged to face the moving blade, and a stationary blade fixed to an inner surface, an outer casing covering the inner casing, and the inner casing A rotary machine control method for controlling a rotary machine having a bearing that is disposed outside and supports the rotor and is supported by a gantry,
Detect the operating state,
Based on the result of the detected operating state, the moving unit disposed inside the external casing and between the internal casing and the external casing is used for the gantry in the radial direction of the rotor. A rotating machine control method, wherein the position of the internal casing is moved, and the relative position between the internal casing and the rotor supported by the gantry via the external casing and the moving unit is controlled. .

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