Rotating machine monitoring and control device, rotating machine equipment, rotating machine monitoring and control method, and rotating machine monitoring and control program

Abstract

A monitoring and control device for monitoring or controlling the clearance of a rotating machine including a vehicle cabin containing rotating and stationary parts comprises: an acquisition unit configured to acquire a plurality of temperatures at a plurality of locations in the vehicle cabin; and an index calculation unit configured to calculate an index indicating the vertical displacement of the vehicle cabin on the basis of the plurality of temperatures.

Description

[Technical Field]

[0001] The present disclosure relates to a monitoring and control device for a rotating machine, a rotating machine facility, a monitoring and control method for a rotating machine, and a monitoring and control program for a rotating machine. This application claims priority based on Patent Application No. 2021-189121, filed with the Japan Patent Office on November 22, 2021, the contents of which are incorporated herein by reference. [Background technology]

[0002] In a rotary machine that includes a casing that houses a rotating part and a stationary part, the casing may move up and down due to temperature differences at multiple locations in the casing, which may change the clearance between the rotating and stationary parts. It is important to maintain the clearance within an appropriate range to avoid contact between the rotating and stationary parts.

[0003] For example, Patent Document 1 describes that in order to maintain an appropriate gap between the rotating body and the stationary part when thermal deformation occurs in the casing of a steam turbine, the deformation of the casing is estimated from the measurement values ​​obtained by thermometers installed in each of the upper and lower halves of the casing, and the vertical position of the casing is adjusted based on this estimation result.

[0004] Patent Document 2 describes that in order to prevent deformation of the casing and contact between the rotor and the casing when the gas turbine is stopped, the temperatures of the top and bottom of the casing are measured, and when the difference between these temperatures reaches a threshold, the upper half of the casing is cooled. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-270646 [Patent Document 2] Japanese Patent Application Publication No. 6-26364 Summary of the Invention [Problem to be solved by the invention]

[0006] If an index showing the vertical displacement of the casing can be obtained using a quantity (such as temperature) that indicates the condition of the casing of a rotary machine, it will be possible to more appropriately monitor or control the clearance between the rotating and stationary parts, thereby effectively suppressing contact between the rotating and stationary parts.

[0007] In view of the above circumstances, at least one embodiment of the present invention aims to provide a monitoring and control device for a rotating machine, a rotating machine equipment, a monitoring and control method for a rotating machine, and a monitoring and control program for a rotating machine that are capable of more appropriately monitoring or controlling the clearance between a rotating part and a stationary part. [Means for solving the problem]

[0008] A monitoring and control device for a rotary machine according to at least one embodiment of the present invention includes: A monitoring and control device for monitoring or controlling a clearance of a rotary machine including a casing that houses a rotating part and a stationary part, an acquisition unit configured to acquire a plurality of temperatures at a plurality of positions in the vehicle cabin; an index calculation unit configured to calculate an index indicating a vertical displacement of the passenger compartment based on the plurality of temperatures; Equipped with.

[0009] Moreover, the rotating machinery equipment according to at least one embodiment of the present invention includes: a rotary machine including a casing housing a rotating portion and a stationary portion; the above-mentioned monitoring and control device for monitoring or controlling the clearance of the rotary machine; Equipped with.

[0010] Furthermore, a method for monitoring and controlling a rotary machine according to at least one embodiment of the present invention includes: A monitoring and control method for monitoring or controlling a clearance of a rotary machine including a casing that houses a rotating part and a stationary part, comprising: acquiring a plurality of temperatures at a plurality of locations in the vehicle cabin; calculating an index indicating a vertical displacement of the vehicle interior based on the plurality of temperatures; Equipped with.

[0011] Furthermore, a monitoring and control program for a rotating machine according to at least one embodiment of the present invention includes: A monitoring and control program for monitoring or controlling a clearance of a rotary machine including a casing that houses a rotating part and a stationary part, On the computer, acquiring a plurality of temperatures at a plurality of positions in the vehicle interior; calculating an index indicating a vertical displacement of the passenger compartment based on the plurality of temperatures; The method is configured to execute the following steps. [Effects of the Invention]

[0012] According to at least one embodiment of the present invention, there is provided a monitoring and control device for a rotating machine, a rotating machine equipment, a monitoring and control method for a rotating machine, and a monitoring and control program for a rotating machine, which are capable of more appropriately monitoring or controlling the clearance between a rotating part and a stationary part. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a schematic diagram of a rotary machinery installation including a steam turbine (rotary machine) according to one embodiment; [Figure 2] 2 is a schematic cross-sectional view taken along the axial direction of the steam turbine shown in FIG. 1. [Figure 3] 1 is a schematic configuration diagram of a monitoring control device according to an embodiment; [Figure 4] 1 is a flowchart of a method for monitoring and controlling a rotating machine according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, several embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of components described as embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the present invention.

[0015] (Configuration of rotating machinery equipment) Fig. 1 is a schematic diagram of a rotary machinery facility according to one embodiment, including a steam turbine as an example of a rotary machine. Fig. 2 is a schematic cross-sectional view taken along the axial direction of the steam turbine shown in Fig. 1. Fig. 3 is a schematic configuration diagram of a monitoring and control device according to one embodiment.

[0016] A rotary machinery equipment 100 according to some embodiments includes a steam turbine (rotary machine) 1 (see Figures 1 and 2) and a monitoring and control device 50 (see Figure 3) for monitoring or controlling the clearance between the rotating and stationary parts of the steam turbine 1.

[0017] As shown in Figures 1 and 2, the steam turbine 1 includes a rotor 12 (not shown in Figure 1) that can rotate around a central axis O, and an outer casing (casing) 2 that houses a rotating part including the rotor 12 and a stationary part.

[0018] The outer casing 2 includes an upper casing half 3 and a lower casing half 4 located below the upper casing half 3 in the up-down direction (i.e., vertical direction). The upper casing half 3 includes an upper shell 3a and an upper flange 3b. The lower casing half 4 includes a lower shell 4a and a lower flange 4b. The upper flange 3b of the upper casing half 3 and the lower flange 4b ​​of the lower casing half 4 are fastened together by bolts (not shown).

[0019] The outer casing 2 is supported by a casing support base 8 fixed to a foundation 10. In the illustrated embodiment, the casing upper half 3 has protrusions 6 (also called cat feet) that protrude in the axial direction (the direction of the central axis O of the rotor), and the protrusions 6 are placed on the casing support base 8. In this way, the outer casing 2 is supported by the casing support base 8 via the protrusions 6. In the outer casing 2 shown in FIG. 1 , the casing upper half 3 is provided with a pair of protrusions 6 on both sides of the central axis O in a plan view at each of both axial ends, i.e., a total of four protrusions 6 are provided.

[0020] As shown in Fig. 2, the rotating part housed in the outer casing 2 includes a rotor 12 and a plurality of rotor blades 14 provided on the rotor 12 so as to protrude radially from the rotor 12. As shown in Fig. 2, the rotor 12 is provided so as to penetrate the outer casing 2. The rotor 12 is rotatably supported by bearings housed in bearing bases 26 fixed to the foundation 10.

[0021] 2, the stationary portion accommodated in the outer casing 2 includes an inner casing 16 supported by the outer casing 2, and a blade ring 18, stator vanes 19, and dummy rings 20 supported by the inner casing 16. The stator vanes 19 are supported by the inner casing 16 via the blade ring 18, and are provided so as to be located upstream of the rotor blades 14 of each stage in the axial direction.

[0022] The steam turbine 1 has steam inlet portions 28, 29 for introducing steam into the steam turbine 1. In addition, seal portions 22 for suppressing leakage of fluid through a gap between the outer casing 2 and the rotor 12 are provided at both ends of the outer casing 2 in the axial direction.

[0023] A gap (clearance) is formed between a rotating part and a stationary part in the radial direction inside the steam turbine 1. Examples of the clearance include a clearance between the tip of the rotor blade 14 and the blade ring 18, a clearance between the rotor 12 and the tip of the stator blade 19, or a clearance between the rotor 12 and a seal fin (not shown) provided on a dummy ring 20.

[0024] In some embodiments, the rotary machinery installation 100 includes temperature sensors for measuring temperatures at a plurality of positions in the casing. In the exemplary embodiment shown in Fig. 1, the steam turbine 1 is provided with a plurality of temperature sensors 30A-1 to 30F-2 (hereinafter also collectively referred to as temperature sensors 30) configured to measure temperatures at a plurality of positions in the outer casing 2, respectively.

[0025] In some embodiments, the plurality of temperature sensors 30 includes at least one temperature sensor (eg, temperature sensors 30B-1, 30C-1, 30E-1, 30F-1 in FIG. 1) for measuring the temperature of the upper shell 3a.

[0026] In some embodiments, the plurality of temperature sensors 30 includes at least one temperature sensor (eg, temperature sensors 30B-3, 30C-3, 30E-3, 30F-2 in FIG. 1) for measuring the temperature of the lower shell 4a.

[0027] In some embodiments, the plurality of temperature sensors 30 includes at least one temperature sensor (for example, temperature sensors 30A-1, 30B-2, 30D-1, 30E-2 in FIG. 1) for measuring the temperature of the upper flange 3b.

[0028] In some embodiments, the plurality of temperature sensors 30 includes at least one temperature sensor (eg, temperature sensors 30C-2, 30D-2 in FIG. 1) for measuring the temperature of the lower flange 4b.

[0029] Line L in Figure 1 A ~L F is a line indicating the axial position, and the temperature sensor located on the same line (for example, line L B 1 is for illustrative purposes only, and it is not necessary for some of the temperature sensors 30 to be positioned at the same axial position.

[0030] In some embodiments, the rotating machinery installation 100 may include a temperature sensor for measuring the temperature of the casing support 8. In the exemplary embodiment shown in FIG. 1 , the steam turbine 1 is provided with temperature sensors 32a and 32b (hereinafter also collectively referred to as temperature sensors 32) configured to measure the temperature of the casing support 8.

[0031] In some embodiments, the rotating machinery installation 100 may include a temperature sensor for measuring the temperature of the bearing pedestal 26. In the exemplary embodiment shown in FIG. 1 , the steam turbine 1 is provided with temperature sensors 34 a and 34 b (hereinafter also collectively referred to as temperature sensors 34) configured to measure the temperature of the bearing pedestal 26.

[0032] In some embodiments, the rotating machinery installation 100 may include a rotation speed sensor 36 (see FIG. 2) for measuring the rotation speed of the rotor 12 .

[0033] Signals indicating the measured values ​​from the temperature sensors 30, 32, 34 and the rotation speed sensor 36 are sent to a monitoring control device 50, which will be described later.

[0034] In some embodiments, the rotary machinery equipment 100 includes a temperature adjustment unit 60 for heating or cooling at least a portion of the outer casing 2 or the casing support 8. By heating or cooling at least a portion of the outer casing 2 or the casing support 8 using the temperature adjustment unit 60, the amount of thermal expansion of the outer casing 2 or the casing support 8 can be adjusted, thereby adjusting the shape or position of the outer casing 2. Therefore, by appropriately adjusting the shape or position of the outer casing 2 using the temperature adjustment unit 60, the internal clearance of the steam turbine 1 can be maintained within an appropriate range.

[0035] 1, for example, the temperature adjustment unit 60 includes a heating unit 62 for heating the casing support base 8 that supports the outer casing 2. By heating the casing support base 8 with the heating unit 62, the casing support base 8 thermally expands in the vertical direction, and the position of the outer casing 2 is changed so that the outer casing 2 is lifted.

[0036] The heating unit 62 may be a heater configured to generate heat using electrical energy. In the exemplary embodiment shown in Fig. 1, the heating unit 62 includes a panel-shaped heater provided on the surface of the cabin support base 8. When both the temperature sensor 32 and the heating unit 62 are provided on the cabin support base 8, the temperature sensor 32 and the heating unit 62 may be provided so as to be spaced apart from each other. For example, the temperature sensor 32 and the heating unit 62 may be provided on surfaces of the surface of the cabin support base 8 that face in different directions.

[0037] 1, the temperature adjustment unit 60 includes a cooling unit 64 for cooling the protruding portion 6 of the outer casing 2. By cooling the protruding portion 6 with the cooling unit, the outer casing 2 is deformed so that the outer casing 2 sinks.

[0038] The cooling unit 64 may be configured to supply a cooling fluid to the protrusion 6. In the exemplary embodiment shown in Figure 1, the cooling unit 64 includes a nozzle configured to spray air as the cooling fluid toward the protrusion 6.

[0039] Alternatively, the temperature adjustment unit 60 may include a cooling cell provided in the upper shell 3a of the outer casing 2 and configured to be supplied with a cooling fluid. By cooling the upper shell 3a with the cooling cell, the outer casing 2 is deformed so that the outer casing 2 sinks.

[0040] The monitoring and control device 50 is configured to receive and process signals from the temperature sensors 30, 32, 34 and / or the rotation speed sensor 36. As shown in FIG. 3 , the monitoring and control device 50 according to one embodiment includes an acquisition unit 52, an index calculation unit 54, and a control unit 56.

[0041] The acquisition unit 52 is configured to receive signals from the temperature sensors 30, 32, 34 and / or the rotation speed sensor 36 indicative of the measurements made by each sensor.

[0042] The index calculation unit 54 is configured to calculate an index indicating the vertical displacement of the outer compartment 2 (compartment) based on the plurality of temperatures acquired by the acquisition unit 52.

[0043] The control unit 56 is configured to adjust the shape or position of the outer compartment 2 (compartment) based on the index calculated by the index calculation unit 54.

[0044] The monitoring and control device 50 includes a computer equipped with a processor (e.g., CPU), a storage device (e.g., memory device; RAM), an auxiliary storage unit, an interface, etc. The monitoring and control device 50 receives signals from the temperature sensors 30, 32, 34 and / or the rotation speed sensor 36 via the interface. The processor is configured to process the signals received in this manner. The processor is also configured to process programs loaded into the storage device. This realizes the functions of the above-mentioned functional units (acquisition unit 52, index calculation unit 54, and control unit 56).

[0045] The processing contents of the monitoring and control device 50 are implemented as programs executed by the processor. The programs may be stored in an auxiliary storage unit. When the programs are executed, they are loaded into the storage device. The processor reads the programs from the storage device and executes the instructions contained in the programs.

[0046] The monitoring and control device 50 having the above-described configuration can calculate an index indicating the vertical displacement of the outer casing 2 based on multiple temperatures at multiple positions in the outer casing 2 (casing). Therefore, based on the index calculated in this manner, it is possible to more appropriately monitor or control the clearance between the rotating part and the stationary part. Furthermore, the temperature of the outer casing 2 can be obtained with a simple configuration in which a temperature sensor 30 is provided in the outer casing 2. Therefore, with the above-described configuration, it is possible to calculate an index indicating the vertical displacement of the outer casing 2 with a simple configuration, and it is also possible to appropriately monitor or control the clearance based on the calculated index.

[0047] (Rotating machine monitoring control flow) Next, a flow of a method for monitoring and controlling a rotary machine according to some embodiments will be described. Note that, although the following describes a case where the above-mentioned monitoring and control device 50 is used to monitor and control the above-mentioned steam turbine 1, the rotary machine to be monitored and controlled is not limited to the above-mentioned steam turbine 1, and some or all of the procedures described below may be performed manually.

[0048] FIG. 4 is a flowchart of a method for monitoring and controlling a rotating machine according to one embodiment.

[0049] In one embodiment, first, the acquisition unit 52 acquires a plurality of temperatures at a plurality of positions in the outer compartment 2 (compartment) (S2). The acquisition unit 52 may acquire the above-mentioned plurality of temperatures by receiving signals indicating measurement values ​​by a plurality of temperature sensors 30.

[0050] In the following description, the temperature measurement value by the temperature sensor 30 is represented by T. For example, the temperature measurement value by the temperature sensor 30A-1 is represented by T A1 , the measurement value by the temperature sensor 30F-2 is T F2 The same applies to the other temperature sensors 30.

[0051] In step S2, the acquisition unit 52 may acquire the temperature of the casing support base 8 (measured by the temperature sensor 32), the temperature of the bearing base 26 (measured by the temperature sensor 34), and / or the rotation speed of the rotor 12 (measured by the rotation speed sensor 36) as necessary (i.e., when used to calculate an index in the subsequent step S4).

[0052] Next, the index calculation unit 54 calculates an index CCI (Clearance Control Index) indicating the vertical displacement of the outer casing 2 based on the multiple temperatures of the outer casing 2 acquired in step S2 (S4). In step S4, the index CCI may be acquired based on the temperature of the casing support base 8, the temperature of the bearing base 26, or the rotation speed of the rotor 12 acquired in step S2, in addition to the multiple temperatures of the outer casing 2.

[0053] The index CCI indicating the displacement of the outer casing 2 in the vertical direction can be expressed, for example, in the form of the following formula (A). CCI=k1×I1+k2×I2+k3×I3+k4×I4+k5×I5+k6×I6+C A …(A) If the index CCI is greater than zero, it indicates that the outer casing 2 is displaced upward from the reference position, and if the index CCI is less than zero, it indicates that the outer casing 2 is displaced downward from the reference position.

[0054] In the above formula (A), k1 to k6 represent coefficients. Here, the coefficient k in the above formula (A) n and I n The product of (k n ×I n ) is called the nth term. n As will be described below, the index CCI indicates the temperature or temperature difference of the outer casing 2. That is, the index CCI can be expressed using a linear combination of a plurality of temperatures at a plurality of positions in the outer casing 2.

[0055] I1 included in the first term of the above formula (A) is a value representing the temperature difference between the upper shell 3a and the lower shell 4a of the outer casing 2. If the upward displacement of the outer casing 2 is considered positive, the coefficient k1 of the first term is a positive value. If the temperature of the upper shell 3a is higher than the temperature of the lower shell 4a, the outer casing 2 is deformed so that the central portion of the outer casing 2 in the axial direction is lifted, and the outer casing 2 is displaced upward. The first term represents such a displacement of the outer casing 2.

[0056] It is desirable that the temperature measurement position of the upper shell 3a and the temperature measurement position of the lower shell 4a used for calculating I1 are close to each other in the axial direction. B1 and T B3 The difference between (T B1 -T B3 ), T C1 and T C3 The difference between (T C1 -T C3 ), or T F1 and T F2 The difference between (T F1 -TF2 ), or a linear combination of two or more of these (e.g., k B ×(T B1 -T B2 )+k C ×(T C1 -T C3 )+k F ×(T F1 -T F2 ), where k B , k C and k F is a coefficient).

[0057] I2 included in the second term of the above formula (A) is a value representing the temperature difference between the shell portion (upper shell 3a or lower shell 4a) and the flange portion (upper flange 3b or lower flange 4b) of the outer casing 2. If the upward displacement of the outer casing 2 is considered positive, the coefficient k2 of the second term is a positive value. If the temperature of the shell portion is higher than the temperature of the flange portion, deformation occurs in which the center portion of the end wall of the outer casing 2 is recessed in the axial direction, and the protrusion 6 protruding axially from the outer casing 2 comes into partial contact with the casing support base 8, lifting the casing upper half 3 (i.e., the outer casing 2 is displaced upward). The second term represents such displacement of the outer casing 2.

[0058] It is desirable that the measurement position of the temperature of the shell portion and the measurement position of the temperature of the flange portion used to calculate I2 are close to each other in the axial direction. It is desirable that the measurement position of the temperature of the shell portion and the measurement position of the temperature of the flange portion used to calculate I2 are positions where the temperature difference between the shell portion and the flange portion is relatively large (for example, positions close to the steam inlets 28 and 29 in the axial direction).

[0059] I2 is, for example, T C1 and T C2 The difference between (T C1 -T C2 ), T C3 and T C2 The difference between (T C3 -T C2 ), T C1 and T C3 Average and T C2 The difference between ((T C1 +T C3) / 2-T C2 ), T E1 and T E2 The difference between (T E1 -T E2 ), T E3 and T E2 The difference between (T E3 -T E2 ), or T E1 and T E3 Average and T E2 The difference between ((T E1 +T E3 ) / 2-T E2 ), or a linear combination of two or more of these (e.g., k c ×[(T C1 +T C3 ) / 2-T C2 ]+k e ×[(T E1 +T E3 ) / 2-T E2 ], where k c k e is a coefficient).

[0060] I3 included in the third term of the above formula (A) is a value representing the temperature difference between the upper flange 3b and the lower flange 4b ​​of the outer casing 2. If the upward displacement of the outer casing 2 is considered positive, the coefficient k3 of the third term is a positive value. If the temperature of the upper flange 3b is higher than the temperature of the lower flange 4b, the outer casing 2 is deformed so that the central portion of the outer casing 2 in the axial direction is lifted, and the outer casing 2 is displaced upward. The third term is a term representing such displacement of the outer casing 2.

[0061] It is desirable that the temperature measurement position of the upper flange 3b and the temperature measurement position of the lower flange 4b ​​used in calculating I3 are close to each other in the axial direction. D1 and T D2 The difference between (T D1 -T D2 ), T D1 and T C2 The difference between (T D1 -T C2 ), or T E2 and T D2 The difference between (T E2 -T D2), or a linear combination of two or more of these.

[0062] I4 included in the fourth term of the above formula (A) is a value that indicates the amount of thermal expansion in the vertical direction of the casing support base 8 on which the protrusion 6 of the outer casing 2 rests. If the upward displacement of the outer casing 2 is considered positive, the coefficient k4 of the fourth term is a positive value. When the amount of thermal expansion of the casing support base 8 increases, the outer casing 2 is lifted upward and displaced upward. The fourth term is a term that represents such displacement of the outer casing 2.

[0063] I4 indicating the amount of thermal expansion of the casing support base 8 may be obtained based on the temperature Ts of the casing support base 8 measured by the temperature sensor 32. I4 may be calculated, for example, from the following formula (B). I4=(Ts-a)×b …(B) In the above formula (B), a and b are coefficients.

[0064] I5 included in the fifth term of the above equation (A) is a value indicating the vertical displacement of the rotor 12 (rotating part) of the steam turbine 1. If the upward displacement of the outer casing 2 and the rotor 12 is considered positive, the coefficient k5 of the fifth term is a negative value. During operation of the steam turbine 1 (rotating machine), the rotor 12 may be displaced upward due to thermal elongation in the vertical direction of the bearing base 26 that supports the bearings that support the rotor 12, or an increase in the rotation speed of the rotor 12. The fifth term is a term that represents such displacement of the rotor 12. By including the fifth term that indicates the displacement of the rotor 12, an index CCI can be obtained that indicates the relative displacement of the outer casing 2 with respect to the rotor 12.

[0065] I5, which indicates the displacement of the rotor 12, may be obtained based on the temperature Tb of the bearing stand 26 measured by the temperature sensor 34 and / or the rotation speed R of the rotor 12 measured by the rotation speed sensor 36. I5 may be calculated, for example, from the following formula (C). I5=d×Tb+e×R …(C) In the above formula (C), d and e are coefficients.

[0066] I6 included in the sixth term of the above equation (A) is a value indicating the output of the steam turbine 1 (rotating machine). If the upward displacement of the outer casing 2 is considered positive, the coefficient k6 of the sixth term is a positive value. When a thrust force acts on the protruding portion 6 of the outer casing 2 in response to an increase in the output of the rotating machine, the protruding portion 6 may bend and the outer casing 2 may be deformed so as to be lifted upward, for example, if the axial position of the protruding portion 6 is restricted. The sixth term is a term that represents such a displacement of the outer casing 2.

[0067] In the case of the steam turbine 1, I6 indicating the output can be calculated based on, for example, the temperature or flow rate of gas supplied to a boiler for generating steam supplied to the steam turbine 1.

[0068] The constant term C in the above formula (A) A is a value indicating the amount of position adjustment by an adjustment member for adjusting the relative position of the outer casing 2 with respect to the rotor 12 in the up-down direction, and is, for example, the height of the adjustment member (shim, etc.).

[0069] The above formula (A) also includes a linear combination of the sum of multiple n-th terms, as expressed by the following formula (D). CCI=(m1×I1+m2×I2+m3×I3)×M1+(m4×I4+m5×I5)×M2+C A …(D)

[0070] The above-mentioned coefficients (k1 to k6, a to e, m1 to m5, M1, M2, etc.) used to calculate the indicator CCI can be determined in advance from the operating record of the rotary machine, etc., depending on the model and individual rotary machine.

[0071] The index CCI indicating the displacement of the outer casing 2 in the up-down direction may be the sum of any two or more of the first to sixth terms included in the above formula (A).

[0072] For example, the indicator CCI may be expressed as the sum of the first and second terms included in the above formula (A) (the following formula (A')). CCI=k1'×I1+k2'×I2…(A') The coefficients k1 and k2 included in the above formula (A) and the coefficients k1' and k2' included in the above formula (A') may be different from each other. Alternatively, the indicator CCI may be the sum of the first and second terms included in the above formula (A) plus one or more of the third to sixth terms and constant terms.

[0073] As described above, the index CCI indicating the vertical displacement of the outer casing 2 can be calculated using the temperatures at multiple positions in the outer casing 2. The index CCI calculated in this manner can be used as an index indicating the clearance between the rotating part and the stationary part of the rotary machine.

[0074] Next, the control unit 56 compares the index CCI calculated in step S4 with a predetermined range (S6, S10).

[0075] The index CCI being smaller than the specified range means that the amount of upward displacement of the outer casing 2 is smaller than the standard, and the clearance at the top of the rotor 12 is smaller than the standard. Therefore, if the index CCI is smaller than the specified range (Yes in step S6), the control unit 56 adjusts the shape or position of the outer casing 2 so that the index CCI is within the specified range (S8). In step S8, the control unit 56 may, for example, appropriately control the heating unit 62 (temperature adjustment unit 60) to heat the casing support base 8, thereby adjusting the amount of thermal expansion of the casing support base 8 and changing the position of the outer casing 2 so as to lift the outer casing 2.

[0076] On the other hand, if the index CCI is larger than the specified range, it means that the upward displacement of the outer casing 2 is larger than the standard and the clearance at the bottom of the rotor 12 is smaller than the standard. Therefore, if the index CCI is larger than the specified range (Yes in step S10), the control unit 56 adjusts the shape or position of the outer casing 2 so that the index CCI is within the specified range (S12). In step S12, the control unit 56 may, for example, appropriately control the cooling unit 64 (temperature adjustment unit 60) to supply a cooling fluid to the protrusion 6, thereby deforming the outer casing 2 so that it sinks.

[0077] In this way, if the index CCI calculated in step S4 falls outside the specified range, the shape or position of the outer casing 2 is adjusted so that the index CCI falls within the specified range, thereby preventing the clearance at the top or bottom of the rotating part of the steam turbine 1 (rotating machine) from becoming too small. Therefore, contact between the rotating part and the stationary part of the steam turbine 1 (rotating machine) can be effectively prevented.

[0078] The contents described in each of the above embodiments can be understood, for example, as follows.

[0079] (1) A monitoring and control device (50) for a rotary machine according to at least one embodiment of the present invention includes: A monitoring and control device for monitoring or controlling a clearance of a rotary machine (e.g., the above-mentioned steam turbine 1) including a casing (e.g., the above-mentioned outer casing 2) that houses a rotating part and a stationary part, an acquisition unit (52) configured to acquire a plurality of temperatures at a plurality of positions in the vehicle cabin; an index calculation unit (54) configured to calculate an index (for example, the above-mentioned index CCI) indicating a vertical displacement of the passenger compartment based on the plurality of temperatures; Equipped with.

[0080] According to the configuration (1) above, an index indicating the vertical displacement of the passenger compartment can be calculated based on multiple temperatures at multiple positions in the passenger compartment. Therefore, the clearance between the rotating part and the stationary part can be more appropriately monitored or controlled based on the index calculated in this manner. Furthermore, the temperature of the passenger compartment can be obtained with a simple configuration in which a temperature sensor is provided in the passenger compartment. Therefore, according to the configuration (1) above, an index indicating the vertical displacement of the passenger compartment can be calculated with a simple configuration, and the clearance can be appropriately monitored or controlled based on the calculated index.

[0081] (2) In some embodiments, in the configuration of (1), The index includes a linear combination of the temperatures.

[0082] According to the configuration (2) above, an index showing the vertical displacement of the passenger compartment can be obtained by a relatively simple calculation using a linear combination of multiple temperatures at multiple positions in the passenger compartment. Therefore, the clearance can be appropriately monitored or controlled with a simple configuration.

[0083] (3) In some embodiments, in the configuration of (1) or (2), The casing includes an upper half (e.g., the casing upper half 3) having an upper shell (3a) and a lower half (e.g., the casing lower half 4) having a lower shell (4a), The acquisition unit is configured to acquire a temperature of the upper shell and a temperature of the lower shell, The index calculation unit is configured to calculate the index including a first term related to a temperature difference between the upper shell and the lower shell.

[0084] According to the configuration (3) above, an index including the first term relating to the temperature difference between the upper and lower shells is calculated, so that an index can be obtained that takes into account the vertical movement of the casing caused by the temperature difference between the upper and lower shells. Therefore, based on this index, the clearance between the rotating part and the stationary part can be more appropriately monitored or controlled.

[0085] (4) In some embodiments, in any of the configurations (1) to (3) above, The casing includes an upper half portion having an upper flange (3b) and an upper shell (3a), and a lower half portion having a lower flange (4b) and a lower shell (4a) fastened to the upper flange, the acquisition unit is configured to acquire a temperature of a shell portion including the upper shell or the lower shell, and a temperature of a flange portion including the upper flange or the lower flange, The index calculation unit is configured to calculate the index including a second term related to a temperature difference between the shell portion and the flange portion.

[0086] According to the configuration of (4) above, an index including a second term relating to the temperature difference between the shell portion and the flange portion is calculated, so that an index can be obtained that takes into account the vertical movement of the casing caused by the temperature difference between the shell portion and the flange portion. Therefore, based on this index, it is possible to more appropriately monitor or control the clearance between the rotating portion and the stationary portion.

[0087] (5) In some embodiments, in any of the configurations (1) to (4) above, the casing includes an upper half portion having an upper flange and a lower half portion having a lower flange fastened to the upper flange, the acquisition unit is configured to acquire a temperature of the upper flange and a temperature of the lower flange; The index calculation unit is configured to calculate the index including a third term related to a temperature difference between the upper flange and the lower flange.

[0088] According to the configuration of (5) above, since an index including the third term relating to the temperature difference between the upper flange and the lower flange is calculated, it is possible to obtain an index that takes into account the vertical movement of the casing caused by the temperature difference between the upper flange and the lower flange. Therefore, based on this index, it is possible to more appropriately monitor or control the clearance between the rotating part and the stationary part.

[0089] (6) In some embodiments, in any of the configurations (1) to (5) above, The casing has a protrusion (6) that protrudes in the axial direction, The index calculation unit is configured to calculate the index including a fourth term related to the amount of thermal expansion of a casing support base (8) on which the protrusion is placed.

[0090] According to the configuration of (6) above, an index is calculated that includes the fourth term related to the thermal expansion of the casing support base on which the protruding portion of the casing rests, so that an index that takes into account the vertical movement of the casing due to the thermal expansion of the casing support base can be obtained. Therefore, based on this index, the clearance between the rotating part and the stationary part can be more appropriately monitored or controlled.

[0091] (7) In some embodiments, in any of the configurations (1) to (6) above, The index calculation unit is configured to calculate the index including a fifth term related to a vertical displacement of the rotating part of the rotary machine.

[0092] According to the configuration of (7) above, an index including the fifth term relating to the vertical displacement of the rotating part is calculated, so that an index that takes the vertical displacement of the rotating part into consideration can be obtained. Therefore, based on this index, the clearance between the rotating part and the stationary part can be more appropriately monitored or controlled.

[0093] (8) In some embodiments, in any of the configurations (1) to (7) above, The index calculation unit is configured to calculate the index including a sixth term related to an output of the rotating machine.

[0094] According to the configuration of (8) above, since the index including the sixth term related to the output of the rotary machine is calculated, it is possible to obtain an index that takes into account the vertical movement of the casing caused by the change in the output of the rotary machine. Therefore, based on this index, it is possible to more appropriately monitor or control the clearance between the rotating part and the stationary part.

[0095] (9) In some embodiments, in any of the configurations (1) to (8) above, The monitoring and control device for the rotating machine includes: The vehicle is provided with a control unit (56) configured to adjust the shape or position of the vehicle compartment based on the index calculated by the index calculation unit.

[0096] According to the configuration of (9) above, the control unit can change the shape or position of the casing based on an index indicating the vertical displacement of the casing, thereby effectively suppressing contact between the rotating part and the stationary part of the rotary machine.

[0097] (10) In some embodiments, in the configuration of (9), The control unit is configured to adjust the shape or position of the passenger compartment when the index calculated by the index calculation unit falls outside a specified range so that the index falls within the specified range.

[0098] According to the configuration of (10) above, when the calculated index falls outside a specified range, the shape or position of the casing is adjusted so that the index falls within the specified range. Therefore, it is possible to prevent the clearance at the top or bottom of the rotating part from becoming too small, and therefore it is possible to effectively prevent contact between the rotating part and the stationary part of the rotating machine.

[0099] (11) In some embodiments, in the configuration of (9) or (10), The control unit is configured to control a temperature adjustment unit (60) for heating or cooling at least a part of the cabin or a cabin support unit that supports the cabin so that the index falls within a specified range.

[0100] According to the configuration of (11) above, when the calculated index falls outside the specified range, the temperature adjustment unit is controlled to heat or cool at least a part of the casing or the casing support part so that the index falls within the specified range. Therefore, it is possible to prevent the clearance at the top or bottom of the rotating part from becoming too small, and therefore it is possible to effectively prevent contact between the rotating part and the stationary part of the rotating machine.

[0101] (12) At least one embodiment of the present invention relates to a rotating machinery installation (100), a rotary machine (e.g., the steam turbine 1 described above) including a casing that houses a rotating part and a stationary part; a monitoring and control device (50) according to any one of (1) to (11) above for monitoring or controlling the clearance of the rotary machine; Equipped with.

[0102] According to the configuration of (12) above, an index indicating the vertical displacement of the passenger compartment can be calculated based on multiple temperatures at multiple positions in the passenger compartment. Therefore, the clearance between the rotating part and the stationary part can be more appropriately monitored or controlled based on the index calculated in this manner. Furthermore, the temperature of the passenger compartment can be obtained with a simple configuration in which a temperature sensor is provided in the passenger compartment. Therefore, according to the configuration of (12) above, an index indicating the vertical displacement of the passenger compartment can be calculated with a simple configuration, and the clearance can be appropriately monitored or controlled based on the calculated index.

[0103] (13) A method for monitoring and controlling a rotary machine according to at least one embodiment of the present invention includes: A monitoring and control method for monitoring or controlling a clearance of a rotary machine (e.g., the above-mentioned steam turbine 1) including a casing (e.g., the above-mentioned outer casing 2) that houses a rotating part and a stationary part, A step (S2) of acquiring a plurality of temperatures at a plurality of positions in the vehicle interior; A step (S4) of calculating an index indicating a vertical displacement of the passenger compartment based on the plurality of temperatures; Equipped with.

[0104] According to the method of (13) above, an index indicating the vertical displacement of the casing can be calculated based on multiple temperatures at multiple positions in the casing. Therefore, the clearance between the rotating part and the stationary part can be more appropriately monitored or controlled based on the index calculated in this manner. Furthermore, the temperature of the casing can be obtained with a simple configuration in which a temperature sensor is provided in the casing. Therefore, according to the method of (13) above, an index indicating the vertical displacement of the casing can be calculated with a simple configuration, and the clearance can be appropriately monitored or controlled based on the calculated index.

[0105] (14) A monitoring and control program for a rotating machine according to at least one embodiment of the present invention includes: A monitoring and control program for monitoring or controlling a clearance of a rotary machine (e.g., the above-mentioned steam turbine 1) including a casing (e.g., the above-mentioned outer casing 2) that houses a rotating part and a stationary part, In a computer (for example, the above-mentioned monitoring and control device 50), acquiring a plurality of temperatures at a plurality of positions in the vehicle interior; calculating an index indicating a vertical displacement of the passenger compartment based on the plurality of temperatures; The method is configured to execute the following steps.

[0106] According to the program of (14) above, an index indicating the vertical displacement of the casing can be calculated based on multiple temperatures at multiple positions in the casing. Therefore, based on the index calculated in this manner, the clearance between the rotating part and the stationary part can be more appropriately monitored or controlled. Furthermore, the temperature of the casing can be obtained with a simple configuration in which a temperature sensor is provided in the casing. Therefore, with the program of (14) above, an index indicating the vertical displacement of the casing can be calculated with a simple configuration, and the clearance can be appropriately monitored or controlled based on the calculated index.

[0107] The above describes an embodiment of the present invention, but the present invention is not limited to the above-described embodiment, and also includes forms in which the above-described embodiment is modified, or forms in which these forms are appropriately combined.

[0108] In this specification, expressions expressing relative or absolute arrangement such as "in a certain direction," "along a certain direction," "parallel," "orthogonal," "center," "concentric," or "coaxial" not only express such an arrangement strictly, but also express a state in which there is a relative displacement with a tolerance or an angle or distance to the extent that the same function is obtained. For example, expressions such as "identical," "equal," and "homogeneous" that indicate that something is in an equal state not only indicate a state of strict equality, but also indicate a state in which there is a tolerance or a difference to the extent that the same function is obtained. Furthermore, in this specification, expressions representing shapes such as a rectangular shape or a cylindrical shape not only represent rectangular shapes or cylindrical shapes in the strict geometric sense, but also represent shapes including uneven portions, chamfered portions, etc., to the extent that the same effect can be obtained. Furthermore, in this specification, the expressions "comprise," "include," or "have" a component are not exclusive expressions that exclude the presence of other components. [Explanation of symbols]

[0109] 1. Steam turbine 2 Outer compartment 3 Upper part of the cabin 3a Upper shell 3b Upper flange 4 Lower half of cabin 4a Lower shell 4b Lower flange 6 Protrusion 8 Cabin support stand 10 Basics 12 rotors 14 Moving blade 16 Inner compartment 18 Wing ring 19 Stator blade 20 Dummy Ring 22 Seal part 26 Bearing stand 28 Steam inlet 29 Steam inlet 30(30A-1~30F-2) Temperature sensor 32, 32a, 32b Temperature sensors 34, 34a, 34b Temperature sensors 36 RPM sensor 50 Monitoring and control device 52 Acquisition Department 54 Indicator calculation section 56 Control Unit 60 Temperature control section 62 Heating section 64 Cooling section 100 Rotating machinery equipment O center axis

Claims

1. A monitoring and control device for monitoring or controlling a clearance of a rotary machine including a casing that houses a rotating part and a stationary part, an acquisition unit configured to acquire a plurality of temperatures at a plurality of positions in the vehicle cabin; an index calculation unit configured to calculate an index indicating a vertical displacement of the passenger compartment based on the plurality of temperatures; Equipped with the casing includes an upper half portion having an upper flange and an upper shell, and a lower half portion having a lower flange and a lower shell fastened to the upper flange, 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 casing support base on which a protruding portion protruding in the axial direction of the casing is placed; a fifth term related to a vertical displacement of the rotating portion of the rotary machine; and a sixth term related to an output of the rotary machine. Rotating machinery monitoring and control device.

2. The index includes a linear combination of the temperatures. The rotary machine monitoring and control device according to claim 1 .

3. The acquisition unit is configured to acquire the temperature of the upper shell and the temperature of the lower shell, the index calculation unit is configured to calculate the index including the first term related to the temperature difference between the upper shell and the lower shell. The rotary machine monitoring and control device according to claim 1 or 2.

4. The acquisition unit is configured to acquire the temperature of the shell portion including the upper shell or the lower shell, and the temperature of the flange portion including the upper flange or the lower flange, The index calculation unit is configured to calculate the index including the second term related to the temperature difference between the shell portion and the flange portion. The rotary machine monitoring and control device according to claim 1 or 2.

5. A monitoring and control device for monitoring or controlling clearance of a rotating machine including a casing that houses a rotating part and a stationary part, an acquisition unit configured to acquire a plurality of temperatures at a plurality of positions in the vehicle cabin; an index calculation unit configured to calculate an index indicating a vertical displacement of the passenger compartment based on the plurality of temperatures; Equipped with the casing includes an upper half portion having an upper flange and a lower half portion having a lower flange fastened to the upper flange, the acquisition unit is configured to acquire a temperature of the upper flange and a temperature of the lower flange; The index calculation unit is configured to calculate the index including a third term related to a temperature difference between the upper flange and the lower flange. Rotating machinery monitoring and control device.

6. The index calculation unit is configured to calculate the index including the fourth term related to the thermal expansion amount of the vehicle interior support base on which the protrusion is placed. The rotary machine monitoring and control device according to claim 1 or 2.

7. A monitoring and control device for monitoring or controlling clearance of a rotating machine including a casing that houses a rotating part and a stationary part, an acquisition unit configured to acquire a plurality of temperatures at a plurality of positions in the vehicle cabin; an index calculation unit configured to calculate an index indicating a vertical displacement of the passenger compartment based on the plurality of temperatures; Equipped with The index calculation unit is configured to calculate the index including a fifth term related to a vertical displacement of the rotating part of the rotating machine based on a temperature of a bearing stand in which a bearing that rotatably supports the rotating part is accommodated and a rotation speed of the rotating part. Rotating machinery monitoring and control device.

8. The index calculation unit is configured to calculate the index including a sixth term related to an output of the rotating machine. The rotary machine monitoring and control device according to claim 1 or 2.

9. a control unit configured to adjust the shape or position of the vehicle interior based on the index calculated by the index calculation unit; The rotary machine monitoring and control device according to claim 1 or 2.

10. The control unit is configured to adjust a shape or a position of the vehicle interior when the index calculated by the index calculation unit falls outside a specified range so that the index falls within the specified range. The rotary machine monitoring and control device according to claim 9.

11. The control unit is configured to control a temperature adjustment unit for heating or cooling at least a part of the vehicle compartment or a vehicle compartment support unit that supports the vehicle compartment so that the index falls within a specified range. The rotary machine monitoring and control device according to claim 9.

12. a rotary machine including a casing housing a rotating portion and a stationary portion; a monitoring and control device according to claim 1 or 2 for monitoring or controlling the clearance of the rotary machine; Rotating machinery equipment.

13. A monitoring and control method for monitoring or controlling a clearance of a rotary machine including a casing that houses a rotating part and a stationary part, comprising: acquiring a plurality of temperatures at a plurality of locations in the vehicle cabin; calculating an index indicating a vertical displacement of the vehicle interior based on the plurality of temperatures; Equipped with the casing includes an upper half portion having an upper flange and an upper shell, and a lower half portion having a lower flange and a lower shell fastened to the upper flange, The step of calculating the index includes calculating the index including a linear combination of at least two of: a first term relating to a temperature difference between the upper shell and the lower shell; a second term relating 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 relating to a temperature difference between the upper flange and the lower flange; a fourth term relating to a thermal expansion amount of a casing support base on which a protruding portion protruding in the axial direction of the casing is placed; a fifth term relating to a vertical displacement of the rotating portion of the rotary machine; and a sixth term relating to an output of the rotary machine. A method for monitoring and controlling a rotating machine.

14. A monitoring and control program for monitoring or controlling a clearance of a rotary machine including a casing that houses a rotating part and a stationary part, On the computer, acquiring a plurality of temperatures at a plurality of positions in the vehicle interior; calculating an index indicating a vertical displacement of the passenger compartment based on the plurality of temperatures; configured to cause the casing includes an upper half portion having an upper flange and an upper shell, and a lower half portion having a lower flange and a lower shell fastened to the upper flange, The procedure for calculating the index includes calculating the index including a linear combination of at least two of: a first term relating to a temperature difference between the upper shell and the lower shell; a second term relating 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 relating to a temperature difference between the upper flange and the lower flange; a fourth term relating to a thermal expansion amount of a casing support base on which a protruding portion protruding in the axial direction of the casing is placed; a fifth term relating to a vertical displacement of the rotating portion of the rotary machine; and a sixth term relating to an output of the rotary machine. Rotating machinery monitoring and control program.

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