Hydraulic equipment measuring apparatus, hydraulic equipment measuring system, and method for measuring hydraulic equipment

Abstract

To provide a hydraulic equipment measuring apparatus capable of measuring, in real time, surface strain or stress occurring in a runner.SOLUTION: The hydraulic equipment measuring apparatus is provided in a hydraulic apparatus containing a rotating body, and includes: a measuring unit in a surface of the rotating body, the measuring unit being configured to output measurement data of the rotating body; a calculation unit configured to output post-calculation measurement data obtained by performing a calculation on the measurement data; a determination unit configured to output determination data indicating the determined state of the rotating body on the basis of the post-calculation measurement data; and a first communication unit configured to be capable of communicating with a second communication unit provided outside the hydraulic equipment and configured to be capable of transmitting at least one of the measurement data, the post-calculation measurement data, and the determination data to the second communication unit.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] FIELD Embodiments of the present invention relate to a hydraulic equipment measurement device, a hydraulic equipment measurement system, and a hydraulic equipment measurement method. [Background technology]

[0002] When a Francis turbine, a type of water turbine, is in operation, water, the working fluid, is introduced from the upper reservoir into the casing. This water passes through stay vanes and guide vanes before being introduced into the runner, driving it to rotate. When the runner rotates, the generator connected to the runner via the main shaft rotates together with the runner, generating electricity. After rotating the runner, the water is then discharged into the lower reservoir or tailrace via the draft pipe.

[0003] During the operation of a Francis turbine, particularly when the runner is starting up, the rotational speed of the runner is unstable relative to the flow rate of the water guided into the runner, which can cause distortion or stress on the runner surface due to the water impinging on the runner. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-156091 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventionally, there has been no means for measuring this surface strain or stress in real time, and therefore this surface strain or stress can lead to damage to the runner.

[0006] The present invention addresses these circumstances, and the problem that the present invention aims to solve is to provide a hydraulic equipment measuring device, a hydraulic equipment measuring system, and a hydraulic equipment measuring method that are capable of measuring the surface strain or stress occurring in a runner in real time. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the hydraulic equipment measuring device of this embodiment is a hydraulic equipment measuring device installed in a hydraulic equipment having a rotating body inside, and is characterized by including: at least one measurement unit installed on the surface of the rotating body and capable of outputting measurement data of the rotating body; a calculation unit installed on the surface of the rotating body and capable of outputting calculated measurement data obtained by performing calculations on the measurement data; a judgment unit installed on the surface of the rotating body and capable of outputting judgment data that judges the state of the rotating body based on the calculated measurement data; and a first communication unit installed outside the hydraulic equipment and capable of communicating with a second communication unit installed outside the hydraulic equipment and capable of transmitting at least one of the measurement data, the calculated measurement data, and the judgment data to the second communication unit.

[0008] In order to achieve the above object, the hydraulic equipment measurement system of this embodiment is characterized by including the hydraulic equipment measurement device described above.

[0009] In order to achieve the above-mentioned object, the hydraulic equipment measurement method of this embodiment is a hydraulic equipment measurement method for a hydraulic equipment measuring device installed in a hydraulic equipment having a rotating body inside, and is characterized by including the steps of: outputting measurement data measuring the surface strain or stress of the rotating body; differentiating the measurement data with respect to time and outputting calculated measurement data that determines the amount of change in the surface strain or stress of the rotating body; and transmitting at least one of the measurement data and the calculated measurement data to the outside of the hydraulic equipment. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram schematically showing the configuration of a hydraulic equipment measurement system 1 according to the present embodiment. [Figure 2] FIG. 2 is a diagram schematically showing the configuration of a hydraulic equipment measuring device 25 according to the present embodiment. [Figure 3] 3 is a diagram showing measurement data output by the measurement unit 31 of the underwater wireless communication unit 30 according to the present embodiment. FIG. [Figure 4]3A and 3B are diagrams showing post-calculation measurement data and judgment data output by the calculation unit 32 and judgment unit 33 of the underwater wireless communication unit 30 according to this embodiment. [Figure 5] FIG. 2 is a flowchart showing a hydraulic instrument measurement method 100 according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, a hydraulic equipment measurement device, a hydraulic equipment measurement system, and a hydraulic equipment measurement method according to embodiments of the present invention will be described in detail with reference to the drawings. Note that the embodiments shown below are merely examples of embodiments of the present invention and are not intended to limit the scope of the invention. Furthermore, in the drawings referred to in the embodiments, identical parts or parts having similar functions are given the same or similar reference numerals, and their description may be omitted. Furthermore, the dimensional ratios of the drawings may differ from the actual ratios, and some components may be omitted from the drawings.

[0012] First, a hydraulic equipment measurement system 1 according to this embodiment will be described with reference to FIG. 1. FIG. 1 is a diagram schematically illustrating the configuration of the hydraulic equipment measurement system 1 according to this embodiment. As shown in FIG. 1, the hydraulic equipment measurement system 1 is a system capable of transmitting measurement data of surface strain or stress occurring in, for example, a Francis turbine 50 from the underwater side to the air side, and includes a hydraulic equipment measuring device 25 and a Francis turbine 50. Note that FIG. 1 shows a schematic cross section of the Francis turbine 50 taken along a vertical plane. Furthermore, although the hydraulic equipment measurement system 1 according to this embodiment illustrates a configuration including a Francis turbine 50, this is not limiting. For example, the hydraulic equipment measurement system 1 may be another hydraulic equipment having a rotor that rotates around an axis of rotation therein.

[0013] A Francis turbine 50 is an example of hydraulic equipment and includes a casing 2, stay vanes 3, guide vanes 4, a runner 5, a main shaft 6, a generator 7, a runner cone 8, and a draft pipe 9. The Francis turbine 50 is hydraulic equipment configured so that the runner 5 rotates by hydraulic power. In the following description, the generator 8 side will be simply referred to as the upper side and the draft pipe 9 side will be simply referred to as the lower side when the rotation axis X of the main shaft 7 is used as a reference. In the following description, the radially outer side about the rotation axis X of the main shaft 7 will be simply referred to as the radially outer side, and the radially inner side about the rotation axis X of the main shaft 7 will be simply referred to as the radially inner side.

[0014] The casing 2 is spirally disposed radially outside the runner 5. The casing 2 guides water that flows into the casing 2 from an upper reservoir (not shown) through a penstock (not shown) to the stay vanes 3, guide vanes 4, and runner 5.

[0015] The stay vanes 3 are provided radially inside the casing 2. A plurality of stay vanes 3 are arranged at regular intervals in the circumferential direction (hereinafter referred to as the circumferential direction) relative to the rotation axis X of the main shaft 7. A flow path through which water flows is formed between adjacent stay vanes 3. The stay vanes 3 guide the water that has flowed into the casing 2 to the guide vanes 4 and the runner 5.

[0016] The guide vanes 4 are provided radially inside the stay vanes 3. A plurality of guide vanes 4 are arranged at regular intervals in the circumferential direction. A flow path through which water flows is formed between adjacent guide vanes 4. The guide vanes 4 are arranged rotatably via a guide ring (not shown), and by changing their opening angle through rotation, the flow rate of water flowing between adjacent guide vanes 4 is adjusted. The guide vanes 4 guide the water that has flowed into the casing 2 and the stay vanes 3 to the runner 5.

[0017] The runner 5 is provided radially inside the guide vanes 4. The runner 5 is rotatable about a rotation axis X and is connected to a generator 7 via a main shaft 6. The runner 5 also includes a crown 10 connected to the main shaft 6, a band 11 provided radially outside the crown 10, and a plurality of runner blades 12 provided between the crown 10 and the band 11. The runner blades 12 are arranged at regular intervals in the circumferential direction. A flow path through which water flows is formed between adjacent runner blades 12. The runner 5 is driven to rotate in a rotation direction R about the rotation axis X by water that flows into the casing 2, stay vanes 3, and guide vanes 4. In other words, the runner 5 converts the pressure energy of the water received by the runner 5 into rotational energy.

[0018] The main shaft 6 is a rotation shaft of the runner 5, and connects the runner 5 to the generator 7. The main shaft 6 transmits the rotational energy of the runner 5 to the generator 7.

[0019] The generator 7 is provided above the runner 5. The generator 7 is connected to the runner 5 via the main shaft 6. When the runner 5 is driven to rotate in the rotation direction R, the generator 7 is driven to rotate together with the runner 5 via the main shaft 6. In other words, the generator 7 is configured to generate electricity by the rotational driving of the runner 5. The generator 7 may also function as an electric motor. As a result, when power is supplied to the generator 7, the runner 5 is driven to rotate. In this case, the Francis turbine 50 may be configured to pump water from a lower reservoir (not shown) to an upper reservoir (not shown).

[0020] The runner cone 8 is provided below the crown 10 of the runner 5 and surrounds the outside in the radial direction of the rotation axis X. The runner cone 8 is formed in a truncated cone shape with an outer diameter that decreases toward the bottom, and has a hollow portion 13 inside. The runner cone 8 is connected to the crown 10 via a connecting member such as a bolt, and rotates together with the runner 5 when the runner 5 is driven to rotate in the rotation direction R. Note that, although FIG. 1 illustrates an example in which the inner diameter of the runner cone 8 at the upper end is smaller than the inner diameter at the lower end, this is not limiting.

[0021] The draft pipe 9 is provided below the runner 5. The draft pipe 9 is connected to a lower pond (not shown) or a discharge channel (not shown), and discharges water flowing out from the runner 5 into the lower pond or the discharge channel.

[0022] The draft tube 9 is provided with a draft manhole 14 for observing the interior from the outside of the draft tube 9. The draft manhole 14 is provided on the outer circumferential surface of the draft tube 9. The draft manhole 14 is provided with a transparent window 15 for transmitting an optical signal used in optical wireless communication. The transparent window 15 has at least a portion made of a light-transmitting material that transmits the optical signal used in optical wireless communication. The light-transmitting material referred to here is preferably a material with a transmittance of 90% or more. Furthermore, the light-transmitting material referred to here is preferably a material with a refractive index close to that of water (approximately 1.33) and high pressure resistance that can withstand high pressure. For example, when the optical signal is visible light, the light-transmitting material is preferably a material with high transmittance such as glass, acrylic resin, polycarbonate, etc., or a material with a refractive index equal to that of water, such as a fluorine monomer polymer material.

[0023] In this embodiment, the case where the transmission window portion 15 is provided in the draft manhole 14 is exemplified, but the present invention is not limited to this. For example, the transmission window portion 15 may be provided as a separate structure at a position different from the draft manhole 14. Specifically, the transmission window portion 15 may be provided at a position different from the draft manhole 14 on the outer peripheral surface of the draft pipe 9.

[0024] The hydraulic equipment measuring device 25 is provided in the Francis turbine 50 and is capable of measuring the surface strain or stress in the runner 5, which is the measurement target. If the surface strain or stress of the runner 5 changes suddenly while the Francis turbine 50 is in operation, this sudden change in surface strain or stress (hereinafter referred to as stress-strain change) can cause damage to the runner 5. The hydraulic equipment measuring device 25 is provided in the Francis turbine 50 in order to detect this sudden stress-strain change that can cause damage to the runner 5.

[0025] The hydraulic instrument measuring device 25 comprises an underwater side wireless communication unit 30 and an air side wireless communication unit 40. The hydraulic instrument measuring device 25 is configured to enable communication between the underwater side wireless communication unit 30 and the air side wireless communication unit 40. Specifically, the hydraulic instrument measuring device 25 is configured to enable optical wireless communication through a transparent window 15 located on a line connecting the underwater side wireless communication unit 30 and the air side wireless communication unit 40. The distance over which optical wireless communication is performed between the underwater side wireless communication unit 30 and the air side wireless communication unit 40 is, for example, 10 mm or more, and the optical wireless communication of this embodiment is different from so-called short-range wireless communication.

[0026] The underwater wireless communication unit 30 is installed underwater inside the Francis turbine 50. Specifically, the underwater wireless communication unit 30 is fixed to the hollow section 13 of the runner cone 8 with connecting members such as bolts. In this case, it is preferable to install the underwater wireless communication unit 30 so that its center coincides with the X-axis. The underwater wireless communication unit 30 is configured to be able to measure surface strain or stress on the runner 5. The underwater wireless communication unit 30 is configured to be able to transmit data as a signal to the air side wireless communication unit 40 and to be able to receive data as a signal from the air side wireless communication unit 40.

[0027] The air side wireless communication unit 40 is provided on the air side of the Francis turbine 50. Specifically, the air side wireless communication unit 40 is provided on the air side of the draft tube 9 and at a position where it can communicate with the underwater side wireless communication unit 30. In this case, the air side wireless communication unit 40 is preferably provided on an extension of a line connecting the underwater side wireless communication unit 30 and the transmission window 15. The air side wireless communication unit 40 is configured to be able to transmit data as a signal to the underwater side wireless communication unit 30 and to be able to receive data as a signal from the underwater side wireless communication unit 30.

[0028] The hydraulic equipment measuring device 25 according to this embodiment will be described using Figures 2 to 4. Figure 2 is a diagram schematically showing the configuration of the hydraulic equipment measuring device 25 according to this embodiment. Figure 3 is a diagram showing measurement data output by the measurement unit 31 of the underwater wireless communication unit 30 according to this embodiment. Figure 4 is a diagram showing post-calculation measurement data and judgment data output by the calculation unit 32 and judgment unit 33 of the underwater wireless communication unit 30 according to this embodiment. In Figure 3, the vertical axis indicates the value of surface strain or stress, and the horizontal axis indicates time. In Figure 4, the vertical axis indicates the value obtained by differentiating the surface strain or stress with respect to time, and the horizontal axis indicates time.

[0029] As shown in FIG. 2, the underwater wireless communication unit 30 includes a measurement unit 31, a calculation unit 32, a determination unit 33, a first storage unit 34, and a first communication unit 35.

[0030] The measurement unit 31 is provided at least at one location on the surface of the runner 5 and is configured to output measurement data related to the runner 5 as an electrical signal. The measurement data here refers to, for example, measurement data such as the surface strain, stress, pressure, temperature, or vibration of the runner 5. In this embodiment, the measurement unit 31 measures the surface strain or stress of the runner 5 and outputs the measurement data as an electrical signal. For example, as shown in FIG. 3 , the measurement unit 31 measures the surface strain or stress of the runner 5, which changes at high frequency during operation of the Francis turbine 50, converts it into an electrical signal, and outputs it.

[0031] The calculation unit 32 is configured to perform calculations on the measurement data related to the runner 5 output by the measurement unit 31 and output the calculated measurement data. Specifically, the calculation unit 32 is configured with a differentiation circuit, and by differentiating the measurement data with respect to time, it determines the amount of change in surface strain or stress of the runner 5 at each measurement point. This enables the calculation unit 32 to detect sudden stress-strain fluctuations that may cause damage to the runner 5. For example, as shown in FIG. 4, the calculation unit 32 detects sudden stress-strain fluctuations that may cause damage to the runner 5 by differentiating with respect to time the measurement data shown in FIG. 3.

[0032] Furthermore, when the measuring unit 31 measures the surface strain or stress of the runner 5, which changes at a high frequency, at a high sampling frequency, the amount of measurement data output by the measuring unit 31 becomes enormous. By virtue of the nature of differentiating the measurement data with respect to time, the calculating unit 32 can convert this enormous amount of measurement data into post-calculation measurement data with a smaller amount of data.

[0033] The determination unit 33 determines the state of the runner 5 based on the post-calculation measurement data output by the calculation unit 32. The determination unit 33 is configured to determine whether or not a sudden stress-strain fluctuation that could cause damage to the runner 5 has occurred in the runner 5 based on the post-calculation measurement data output by the calculation unit 32, and output the determination data. Specifically, the determination unit 33 determines whether each value of the change amount in the post-calculation measurement data exceeds a predetermined threshold. The predetermined threshold here refers to the value of the change amount of stress-strain fluctuation that could cause damage to the runner 5, which is derived in advance using CFD analysis and stress analysis. The determination unit 33 determines that stress-strain fluctuations that exceed the predetermined threshold are sudden stress-strain fluctuations that could cause damage to the runner 5, and counts the number of such stress-strain fluctuations. For example, as shown in FIG. 4, the determination unit 33 detects stress-strain fluctuations that exceed the predetermined threshold (one in the case of FIG. 4).

[0034] The first storage unit 34 is configured, for example, by a semiconductor memory element such as RAM (Random Access Memory) or flash memory, or a hard disk, etc. The first storage unit 34 records measurement data, calculated measurement data, judgment data, various processing programs executed by the hydraulic equipment measuring device 25, etc.

[0035] The first communication unit 35 is configured to convert the measurement results for the runner 5 from electrical signals to optical signals and transmit the converted measurement results to the air-side wireless communication unit 40. The measurement results referred to here include measurement data measured by the measurement unit 31, calculated measurement data calculated by the calculation unit 32, and judgment data judged by the judgment unit 33. The first communication unit 35 transmits the converted measurement results to the air-side wireless communication unit 40 via optical communication using, for example, laser light, LED, ultraviolet light, or X-rays. The optical communication from the first communication unit 35 is transmitted to the air-side wireless communication unit 40 through the transmission window 15. While the present embodiment illustrates an example in which the first communication unit 35 transmits the converted measurement results to the air-side wireless communication unit 40 via optical communication, this is not a limitation. For example, the first communication unit 35 may transmit the measurement results to the air-side wireless communication unit 40 using a communication technology other than optical communication.

[0036] The first communication unit 35 also receives optical signals transmitted from the air-side wireless communication unit 40. The first communication unit 35 converts the received optical signals into electrical signals and sends them to the measurement unit 31, the calculation unit 32, the determination unit 33, and the first storage unit 34. As a result, the measurement unit 31, the calculation unit 32, the determination unit 33, and the first storage unit 34 are controlled based on the control signals included in the optical signals transmitted from the air-side wireless communication unit 40.

[0037] As shown in FIG. 2, the air-side wireless communication unit 40 includes a second communication unit 41, a second storage unit 42, a display unit 43, and an operation unit 44.

[0038] The second communication unit 41 is configured to receive the converted measurement result transmitted as an optical signal from the first communication unit 35 of the underwater wireless communication unit 30. The second communication unit 41 converts the converted measurement result from an optical signal to an electrical signal and acquires the measurement result.

[0039] The second communication unit 41 also converts a control signal for controlling the underwater-side wireless communication unit 30 into an optical signal and transmits the converted control signal to the first communication unit 35 of the underwater-side wireless communication unit 30. The second communication unit 41 transmits the converted control signal to the air-side wireless communication unit 40 by optical communication using, for example, laser light, LED, ultraviolet light, or X-rays. The optical communication from the second communication unit 41 is transmitted to the underwater-side wireless communication unit 30 through the transmission window 15. Note that, although the present embodiment illustrates a case in which the second communication unit 41 transmits the converted control signal to the underwater-side wireless communication unit 30 by optical communication, the present invention is not limited to this. For example, the second communication unit 41 may transmit the control signal to the underwater-side wireless communication unit 30 by a communication technology other than optical communication.

[0040] The second storage unit 42 is configured, for example, by a semiconductor memory element such as RAM (Random Access Memory) or flash memory, or a hard disk, etc. The second storage unit 42 records the measurement results received from the underwater wireless communication unit 30, various processing programs executed by the hydraulic equipment measuring device 25, etc.

[0041] The display unit 43 is configured by a monitor including a display screen, and displays the measurement results received from the underwater wireless communication unit 30.

[0042] The operation unit 44 is composed of user interface devices such as a keyboard, a mouse, a touch panel, etc. The operation unit 44 enables the user to perform operations on the display unit 43, output of control signals to the underwater wireless communication unit 30, etc.

[0043] Next, the hydraulic instrument measuring method 100 according to this embodiment will be described with reference to Fig. 5. Fig. 5 is a diagram showing a flowchart of the hydraulic instrument measuring method 100 according to this embodiment.

[0044] First, the measurement unit 31 measures the surface strain or stress of the runner 5 (step S101). Specifically, the measurement unit 31 measures the surface strain or stress of the runner 5, which changes at high frequency during operation of the Francis turbine 50, and converts the measurement data into an electrical signal for output.

[0045] Next, the calculation unit 32 performs calculations on the measurement data output by the measurement unit 31 (step S102). Specifically, the calculation unit 32 differentiates the measurement data output by the measurement unit 31 with respect to time, and outputs calculated measurement data that determines the amount of change in surface strain or stress of the runner 5 at each measurement point.

[0046] Next, the determination unit 33 determines whether or not there is a sudden stress-strain change based on the post-calculation measurement data output by the calculation unit 32 (step S103). Specifically, the determination unit 33 determines whether or not each value of the amount of change in the post-calculation measurement data output by the calculation unit 32 exceeds a threshold value indicating damage to the runner 5. Then, the determination unit 33 outputs the determination data.

[0047] Next, the first communication unit 35 transmits the measurement results (step S104). Specifically, the first communication unit 35 converts the measurement results related to the runner 5 from electrical signals to optical signals, and transmits the converted measurement results to the air-side wireless communication unit 40. The measurement results here refer to the measurement data measured by the measurement unit 31, the post-computation measurement data calculated by the calculation unit 32, the judgment data judged by the judgment unit 33, etc.

[0048] Next, the second communication unit 41 receives the measurement result (step S105). Specifically, the second communication unit 41 converts the converted measurement result received from the first communication unit 35 of the underwater wireless communication unit 30 from an optical signal to an electrical signal, and acquires the measurement result.

[0049] Finally, the display unit 43 displays the measurement results (step S106). This allows the user to check in real time whether or not a sudden stress-strain fluctuation is occurring in the runner 5 based on the measurement results transmitted from the underwater wireless communication unit 30 to the air wireless communication unit 40 while the Francis turbine 50 is operating.

[0050] As described above, according to this embodiment, during operation of the Francis turbine 50, the measurement unit 31 of the underwater wireless communication unit 30 measures the surface strain or stress of the runner 5, converts the measurement data into an electrical signal, and outputs the electrical signal. The calculation unit 31 of the underwater wireless communication unit 30 then differentiates the measurement data with respect to time to determine the amount of change in the surface strain or stress of the runner 5 at each measurement point and outputs the calculated measurement data. The determination unit 33 of the underwater wireless communication unit 30 then determines whether each value of the amount of change in the calculated measurement data exceeds a threshold value indicating damage to the runner 5 and outputs the determination data. The first communication unit 34 of the underwater wireless communication unit 30 then converts the measurement results for the runner 5 from an electrical signal to an optical signal and transmits the converted measurement results to the air-side wireless communication unit 40. As a result, if a sudden stress-strain fluctuation that could cause damage to the runner 5 occurs in the runner 5 during operation of the Francis turbine 50, this can be detected in real time.

[0051] Furthermore, according to this embodiment, the above-described hydraulic equipment measuring device 25 detects in real time any sudden stress-strain fluctuations occurring in the runner 5 during operation of the Francis turbine 50. As a result, the user can consider, in real time, changes to operating conditions, part replacement, and other measures based on the degree and frequency of the stress-strain fluctuations detected in real time.

[0052] Furthermore, according to this embodiment, the calculation unit 32 of the underwater-side wireless communication unit 30 performs time differentiation on the measurement data of the surface strain or stress of the runner 5 on the underwater side. The background to this is that, in order to measure the surface strain or stress of the runner 5, which changes at high frequency during operation of the Francis turbine 50, the measurement unit 31 had to perform measurements at a high sampling frequency. In this case, the measurement data measured by the measurement unit 31 becomes enormous. It was difficult for the first communication unit 34 to transmit this enormous amount of measurement data directly to the air-side wireless communication unit 40. In contrast, by performing time differentiation on the measurement data of the surface strain or stress of the runner 5 on the underwater side, it is possible to reduce the enormous amount of data.

[0053] Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, modifications, and combinations can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0054] 1...hydraulic equipment measurement system, 2...casing, 3...stay vane, 4...guide vane, 5...runner, 6...main shaft, 7...generator, 8...runner cone, 9...draft tube, 10...crown, 11...band, 12...runner blade, 13...hollow portion, 14...draft manhole, 15...transmission window portion, 25...hydraulic equipment measuring device, 30...underwater side wireless communication unit, 31...measuring unit, 32...calculating unit, 33...judgment unit, 34...first memory unit, 35...first communication unit, 40...air side wireless communication unit, 41...second communication unit, 42...second memory unit, 43...display unit, 44...operating unit, 50...Francis turbine, 100...hydraulic equipment measurement method.

Claims

1. A hydraulic equipment measuring device provided in hydraulic equipment having a rotating body therein, At least one measurement unit is provided on the surface of the rotating body, and is capable of outputting measurement data of the rotating body; a calculation unit capable of performing calculations on the measurement data and outputting the calculated measurement data; a determination unit capable of outputting determination data obtained by determining the state of the rotating body based on the calculated measurement data; a first communication unit capable of communicating with a second communication unit provided outside the hydraulic equipment and capable of transmitting at least one of the measurement data, the calculated measurement data, and the judgment data to the second communication unit; A hydraulic equipment measuring device comprising:

2. A hydraulic equipment measuring device provided in hydraulic equipment having a rotating body therein, At least one measuring unit is provided on the surface of the rotating body, and is capable of outputting measurement data of the surface strain or stress of the rotating body; a calculation unit that is capable of differentiating the measurement data with respect to time, determining the amount of change in the surface strain or stress of the rotating body, and outputting the calculated measurement data; a first communication unit capable of communicating with a second communication unit provided outside the hydraulic device and capable of transmitting at least one of the measurement data and the calculated measurement data; A hydraulic equipment measuring device comprising:

3. a determination unit capable of outputting determination data indicating whether or not the change in the surface strain or stress of the rotating body exceeds a threshold value indicating damage to the rotating body; A hydraulic equipment measuring device as described in claim 2, characterized in that the first communication unit is capable of transmitting at least one of the measurement data, the calculated measurement data, and the judgment data to the second communication unit provided outside the hydraulic equipment.

4. The hydraulic instrument measuring device according to claim 2, further comprising a display unit capable of displaying at least one of the measurement data and the calculated measurement data received by the second communication unit.

5. A hydraulic equipment measuring device as described in claim 1 or claim 3, further comprising a display unit capable of displaying at least one of the measurement data, the calculated measurement data, and the judgment data received by the second communication unit.

6. A hydraulic equipment measurement system comprising the hydraulic equipment measurement device according to any one of claims 1 to 4.

7. A hydraulic equipment measurement system comprising the hydraulic equipment measurement device according to claim 5.

8. A hydraulic equipment measurement method for a hydraulic equipment measuring device provided in hydraulic equipment having a rotating body therein, comprising: a step of outputting measurement data obtained by measuring the surface strain or stress of the rotating body; a step of differentiating the measurement data with respect to time, determining the amount of change in the surface strain or stress of the rotating body, and outputting the calculated measurement data; transmitting at least one of the measurement data and the calculated measurement data to an external device of the hydraulic device; A hydraulic equipment measurement method comprising:

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