Power module type telemetry transmitter, telemetry measurement system, rotating machine and telemetry transmission method

Abstract

A power-receiving module type telemetry transmitter is a power-receiving module type telemetry transmitter of a telemetry measurement system, which is provided to a rotor, performs communication by receiving electric power from a power transmission antenna formed in a circular arc shape on a stator side covering the rotor, and includes a plurality of power-receiving antennas arranged at intervals in a circumferential direction on the rotor, a logic and circuit that outputs a highest voltage among voltages input from the plurality of power-receiving antennas, a sensor that measures a state of the rotor and outputs measurement data indicating the state, and a transmission section that is driven by the voltage input from the logic and circuit as a power supply and transmits a wireless signal containing the measurement data of the sensor.

Description

Technical Field

[0001] This invention relates to a power receiving module type telemetry transmitter, a telemetry measurement system, rotating machinery, and a telemetry transmission method.

[0002] This application claims priority under Japanese Patent Application No. 2020-058245, filed on March 27, 2020, the contents of which are incorporated herein by reference. Background Technology

[0003] Telemetry systems are known as operation monitoring systems for monitoring the operating status of rotating machinery such as gas turbines. Patent Document 1 discloses a telemetry system that supplies microwave energy (high-frequency radio waves) to a receiving module of a measurement signal transmitting device installed on the rotor via a ring-shaped transmission antenna installed on the stator of the turbine.

[0004] Previous technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2018-170893 Summary of the Invention

[0007] The technical problem to be solved by the invention

[0008] Radio waves emitted from a transmission antenna mounted on rotating machinery are reflected, refracted, or scattered by structures such as the stator of the machinery. Therefore, multipath propagation occurs, resulting in multiple propagation paths between the transmission antenna on the stator side and the receiving antenna on the rotor side. If multipath propagation occurs, the received signal level may decrease due to phase combining of the direct and reflected waves at the receiving antenna. Consequently, the power supplied from the transmission antenna may also vary depending on the location of the power reception.

[0009] The purpose of this invention is to provide a power receiving module type telemetry transmitter, telemetry measurement system, rotating machinery, and telemetry transmission method capable of stably receiving power from a power transmission antenna.

[0010] means for solving technical problems

[0011] The power receiving module type telemetry transmitter involved in this invention is a power receiving module type telemetry transmitter of a telemetry measurement system. It is disposed on a rotor and communicates by receiving power from a transmission antenna formed in an arc shape on the stator side covering the rotor. The power receiving module type telemetry transmitter includes: a plurality of power receiving modules arranged circumferentially on the rotor; a logic and circuit that outputs the highest voltage among the voltages input from the plurality of power receiving modules; a sensor that measures the state of the rotor and outputs measurement data representing the state; and a transmitting unit that is driven by the voltage input from the logic and circuit as a power source and transmits a wireless signal containing the measurement data of the sensor.

[0012] The telemetry system of the present invention comprises: a power-receiving module type telemetry transmitter as described above; a power transmission antenna disposed on the stator and formed in an arc shape; an oscillator supplying a high-frequency signal to the power transmission antenna; a receiving antenna disposed on the stator and formed in an arc shape; and a receiving unit receiving the wireless signal from the power-receiving module type telemetry transmitter via the receiving antenna.

[0013] The rotating machinery of the present invention comprises: the stator; the rotor having a rotating shaft and a plurality of moving blades, the rotating shaft rotating about an axis relative to the stator, the plurality of moving blades being arranged to extend radially from the outer peripheral surface of the rotating shaft; and a telemetry system according to the above-described manner, wherein the sensors are respectively disposed on the moving blades.

[0014] The telemetry transmission method involved in this invention is a telemetry transmission method using a power-receiving module type telemetry transmitter. The power-receiving module type telemetry transmitter is a telemetry measurement system power-receiving module type telemetry transmitter, which is disposed on the rotor and communicates via power received from a transmission antenna formed in an arc shape on the stator side. The power-receiving module type telemetry transmitter includes: a plurality of power-receiving modules arranged circumferentially at intervals on the rotor; a sensor that measures the state of a monitored object and outputs measurement data representing the state; and a transmitting unit that transmits a wireless signal containing the measurement data of the sensor. The telemetry transmission method includes the following steps: the plurality of power-receiving modules receive power from the transmission antenna; the transmitting unit is driven by using the highest voltage among the voltages input from the plurality of power-receiving modules as a power source; and the transmitting unit transmits a wireless signal containing the measurement data of the sensor.

[0015] Invention Effects

[0016] According to the power receiving module type telemetry transmitter of the present invention, it is capable of stably receiving power from a ring-shaped power transmission antenna. Attached Figure Description

[0017] Figure 1It is a schematic longitudinal sectional view of a gas turbine according to at least one embodiment.

[0018] Figure 2 It is a longitudinal sectional view showing the schematic structure of the telemetry system involved in at least one embodiment.

[0019] Figure 3 It is a schematic cross-sectional view showing the general structure of a telemetry system according to at least one embodiment.

[0020] Figure 4 This is a schematic circuit diagram showing the structure of a power receiving module type telemetry transmitter according to at least one embodiment.

[0021] Figure 5 This is a diagram illustrating an example of the relationship between the rotational position of the rotor involved in at least one embodiment and the voltage received by the power receiving module and the voltage output by the logic and circuitry.

[0022] Figure 6 This is a schematic circuit diagram showing the structure of a power receiving module type telemetry transmitter according to at least one embodiment.

[0023] Figure 7 This is a schematic circuit diagram showing the structure of a power receiving module type telemetry transmitter according to at least one embodiment.

[0024] Figure 8 This is a schematic block diagram showing the structure of the signal processing unit involved in at least one embodiment.

[0025] Figure 9 This is a flowchart illustrating a fault diagnosis method for a power-receiving module-type telemetry transmitter based on at least one embodiment of the signal processing unit.

[0026] Figure 10 It is a diagram showing the relationship between the correctness of communication and the fault state in at least one implementation.

[0027] Figure 11 It is a schematic block diagram showing the structure of a computer involved in at least one embodiment. Detailed Implementation

[0028] (First Embodiment)

[0029] (Structure of a gas turbine (rotating machinery))

[0030] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic longitudinal sectional view of the gas turbine 1 according to the first embodiment.

[0032] like Figure 1 As shown, the gas turbine 1 according to the first embodiment includes a compressor 10, a burner 20, and a turbine 30. The compressor 10 generates high-pressure air by rotating. The burner 20 generates combustion gas by mixing fuel with the high-pressure air generated by the compressor 10 and burning it. The turbine 30 is driven by the combustion gas generated by the burner 20. The gas turbine 1 is an example of rotating machinery.

[0033] The compressor 10 has a compressor rotor 11 that rotates about an axis O and a compressor housing 12 that covers the compressor rotor 11 from the outer periphery. The compressor rotor 11 is cylindrical and extends along the axis O. A plurality of compressor moving blade layers 13 are provided on the outer periphery of the compressor rotor 11, spaced apart along the axis O. Each compressor moving blade layer 13 has a plurality of compressor moving blades 14 arranged circumferentially spaced around the axis O on the outer periphery of the compressor rotor 11.

[0034] The compressor housing 12 is cylindrical with axis O as its center. Multiple compressor stationary blade layers 15 are arranged at intervals along axis O on the inner circumferential surface of the compressor housing 12. When viewed from axis O, these compressor stationary blade layers 15 are arranged alternately with respect to the aforementioned compressor moving blade layers 13. Each compressor stationary blade layer 15 has multiple compressor stationary blades 16 arranged circumferentially at intervals along axis O on the inner circumferential surface of the compressor housing 12.

[0035] The burner 20 is disposed between the compressor housing 12 and the turbine housing 32 (described later). The high-pressure air generated by the compressor 10 is mixed with fuel inside the burner 20 to form a premixed gas. Inside the burner 20, this premixed gas is combusted to generate high-temperature, high-pressure combustion gas. The combustion gas is guided into the turbine housing 32 to drive the turbine 30.

[0036] The turbine 30 has a turbine rotor 31 that rotates about an axis O and a turbine housing 32 that covers the turbine rotor 31 from the outer periphery. The turbine rotor 31 is supported by a plurality of turbine disks 31a arranged in a disk shape centered on the axis O (see reference). Figure 2 The turbine disks 31a are stacked along the axis O and generally form a columnar shape extending along the axis O. A turbine blade layer 33 is provided on the outer periphery of each turbine disk 31a. Thus, multiple turbine blade layers 33 are provided on the turbine rotor 31 at intervals along the axis O.

[0037] Each turbine blade layer 33 has multiple turbine blades (monitored objects) 34 arranged circumferentially at intervals along the axis O on the outer peripheral surface of the turbine rotor 31. The turbine rotor 31 is integrally connected with the compressor rotor 11 in the direction of the axis O to form a gas turbine rotor.

[0038] The turbine housing 32 is cylindrical with axis O as its center. Multiple turbine stator blade layers 35 are arranged at intervals along axis O on the inner circumferential surface of the turbine housing 32. When viewed from axis O, these turbine stator blade layers 35 are arranged alternately relative to the turbine moving blade layers 33. Each turbine stator blade layer 35 has multiple turbine stator blades 36 arranged circumferentially at intervals along axis O on the inner circumferential surface of the turbine housing 32. The turbine housing 32 forms a gas turbine housing by being connected to the compressor housing 12 in the direction of axis O. That is, the gas turbine rotor can rotate integrally around axis O within this gas turbine housing.

[0039] (Structure of a telemetry system)

[0040] Figure 2 This is a longitudinal sectional view showing the general structure of the telemetry system 100 according to the first embodiment. Figure 3 This is a schematic cross-sectional view showing the general structure of the telemetry system 100 according to the first embodiment.

[0041] The gas turbine 1 according to the first embodiment includes a telemetry system 100 for monitoring the operating status of the gas turbine 1 during operation, such as the surface temperature, strain, and vibration of the turbine blades. Figure 2 As shown, the telemetry system 100 includes multiple power-receiving module type telemetry transmitters 110, receivers 120, and power supply devices 130.

[0042] (Structure of the power supply device)

[0043] The power supply unit 130 transmits (supplyes) power non-contactly to the receiving antennas 511 of a plurality of power receiving module-type telemetry transmitters 110 arranged circumferentially spaced on the turbine rotor 31 from the stationary component 32a side of the gas turbine housing. The power supply unit 130 includes the transmission antenna 131 and an oscillator 132. The stationary component 32a is a component that does not rotate relative to the turbine rotor 31, which rotates about axis O, and is stationary, for example, fixed to the turbine housing 32. The stationary component 32a is not limited to being fixed to the turbine housing 32; it can also be mounted on other stationary structures. The turbine housing 32 and the stationary component 32a are part of the stator.

[0044] The transmission antenna 131 is generally in the shape of a ring centered on axis O. The transmission antenna 131 is fixed relative to the stationary component 32a. In this embodiment, the transmission antenna 131 is constituted by a leaky waveguide 310 (leaky antenna).

[0045] The leakage waveguide 310 extends circumferentially along an arc centered on axis O. The interior of the leakage waveguide 310 is hollow, and its cross-sectional shape, orthogonal to the extension direction, is, for example, square or circular. A first end 311, located on one circumferential side, and a second end 312, located on the other circumferential side, of the leakage waveguide 310 are connected via a distributor 134. The distributor 134 is a T-shaped waveguide with one input and two outputs, distributing the electromagnetic waves input to the input end to the two output ends. The input end of the distributor 134 is connected to an oscillator 132. That is, the leakage waveguide 310 is annular, surrounding axis O on its entire circumference except for the gap. The distributor 134 can be integrally formed with the leakage waveguide 310. Furthermore, a reflector (not shown) is positioned opposite the first end 311 and the second end 312 inside the waveguide to adjust the overall power distribution within the waveguide in a way that makes the power distribution more uniform.

[0046] The leakage waveguide 310 is fixed to the front end of a plurality of protrusions 32c on the stationary component 32a of the gas turbine housing. That is, the leakage waveguide 310 is fixed by the protrusions 32c, which are arranged circumferentially spaced apart. Figure 2 As shown, the leakage waveguide 310 is located further along the axis O than the receiving antennas 511 of the receiving modules 111 arranged in a ring. Figure 2 The location is on the right side of the turbine, downstream of the turbine.

[0047] On the surface of the leaky waveguide 310 facing the receiving antenna 511, a plurality of radial portions 313 of the surface opening of the leaky waveguide 310 are arranged at intervals and spaced apart from each other.

[0048] Oscillator 132 oscillates a high-frequency signal at a predetermined frequency based on power supplied from a power source (not shown). Oscillator 132 is electrically connected to distributor 134 of leaky waveguide 310. The high-frequency signal oscillated by oscillator 132 is transmitted via distributor 134 to the first end 311 and the second end 312 of leaky waveguide 310, thereby propagating electromagnetic waves from the first end 311 and the second end 312 towards the reflector within leaky waveguide 310 while simultaneously forming an electromagnetic field. Based on this electromagnetic wave, radio waves (microwaves) are emitted into space from each radiating section 313.

[0049] (Structure of a power receiving module type telemetry transmitter)

[0050] The power receiving module type telemetry transmitter 110 is integrally mounted with the turbine rotor 31 of the gas turbine 1 and rotates around axis O as the turbine rotor 31 rotates. The power receiving module type telemetry transmitter 110 is driven by electricity transmitted as radio waves (microwaves) from the power supply unit 130 and transmits the measured values ​​of state quantities related to the gas turbine 1 in the form of wireless signals.

[0051] Figure 4 This is a schematic circuit diagram showing the structure of the power receiving module type telemetry transmitter 110. The power receiving module type telemetry transmitter 110 includes two power receiving modules 111, logic and circuitry 112, sensors 113, and a transmitting unit 114.

[0052] The power receiving module 111 receives radio waves supplied from the power supply device 130. Each power receiving module 111 includes a power receiving antenna 511, a detector 512, and a DC / DC converter 513.

[0053] The receiving antenna 511 is circumferentially spaced on the surface of the turbine disk 31a facing the axis O, protruding from the outer surface of the turbine disk 31a. The detector 512 converts the microwaves received by the receiving antenna 511 into DC signals. For example, as... Figure 4 As shown, detector 512 consists of a diode and a capacitor.

[0054] DC / DC converter 513 converts the DC voltage input from detector 512 into a specified voltage value.

[0055] The logic and circuit 112 outputs the highest voltage among the voltages output by the two powered modules 111. That is, the logic and circuit 112 outputs a signal related to the logical sum of the voltage signals output by the two powered modules 111.

[0056] For example, such as Figure 4 As shown, the logic circuit 112 is a so-called diode "OR" circuit with two diodes 521 and an output wiring 522. The anodes of the two diodes 521 are respectively connected to the corresponding power receiving module 111. The cathodes of the two diodes 521 are respectively connected in parallel to the output wiring 522. Thus, the highest voltage of the voltages output by the two power receiving modules 111 is output from the output wiring 522.

[0057] Alternatively, in other embodiments, the logic and circuitry 112 may also include transistors such as FETs (Field Effect Transistors) or switches instead of diodes 521.

[0058] The sensor 113 according to the first embodiment is installed on the turbine blade 34. Examples of the sensor 113 include a strain gauge for measuring the vibration of the turbine blade 34, a thermocouple for measuring the temperature of the turbine blade 34, and a sensor 113 for measuring the state quantity of the turbine blade 34 under the operating conditions of the gas turbine 1.

[0059] The transmitter 114 is disposed on the surface of the turbine disk 31a facing the axis O, protruding from the outer surface of the turbine disk 31a. The transmitter 114 is electrically connected to the logic and circuit 112 and the sensor 113. The transmitter 114 is driven by DC power supplied from the logic and circuit 112. The measurement signal measured by the corresponding sensor 113 is input to the transmitter 114. The transmitter 114 converts the measurement signal from the sensor 113 into wireless information and transmits the wireless information to the outside via a transmitting antenna (not shown).

[0060] (Structure of the receiving device)

[0061] The receiving device 120 includes a receiving antenna 121, a signal processing unit 122, and a display unit 123.

[0062] A receiving antenna 121 is disposed on the protrusion 32c of the stationary member 32a and receives wireless information transmitted by the transmitting unit 114 of the powered module type telemetry transmitter 110. The receiving antenna 121 is disposed on one side of the transmitting unit 114 in the direction of axis O and radially outward. That is, the receiving antenna 121 is positioned opposite the transmitting unit 114 in a direction inclined relative to the direction of axis O.

[0063] The wireless signal received by the receiving antenna 121 is demodulated by the receiving unit (not shown) and converted into a sensor signal. This sensor signal is then processed by the signal processing unit 122 through AD conversion into various data such as temperature, strain, and vibration, which are then displayed and stored. The signal processing unit 122 may be, for example, a computer.

[0064] The display unit 123 displays the detection signal from the sensor 113 extracted by the signal processing unit 122 in a manner that can be confirmed by the manager of the gas turbine 1. The signal processing unit 122 and the display unit 123 may also be located outside the gas turbine 1.

[0065] (Effects)

[0066] The telemetry system 100 according to the first embodiment includes a power receiving module type telemetry transmitter 110 with multiple power receiving antennas 511 and a logic and circuit 112 that outputs the highest voltage among the voltages input from the multiple power receiving antennas 511. The transmitting unit 114 is driven by the output voltage of the logic and circuit 112 as a power source. As a result, the power receiving module type telemetry transmitter 110 can reliably receive power from the power supply device 130.

[0067] Here, the reason why the power receiving module type telemetry transmitter 110 according to the first embodiment can stably receive power from the power supply device 130 will be explained.

[0068] The reason for the stable power reception obstruction in the powered module telemetry transmitter 110 is due to multipath fading that occurs during the propagation of radio waves between the power supply device 130 and the powered module telemetry transmitter 110. Furthermore, since the power supply device 130 continuously outputs radio waves, the fading is random, and the rotational position of the receiving antenna 511 of the powered module telemetry transmitter 110 is not correlated with changes in the received power.

[0069] Figure 5 This is a graph illustrating an example of the relationship between the rotational position of the rotor according to the first embodiment and the voltage received and detected by the power receiving module 111 and the voltage output by the logic and circuit 112. Graph G1 shows the relationship between the rotational position of the rotor and the voltage received and detected by the first power receiving module 111a. Graph G2 shows the relationship between the rotational position of the rotor and the voltage received and detected by the second power receiving module 111b. Graph G3 shows the relationship between the rotational position of the rotor and the voltage output by the logic and circuit 112.

[0070] In this embodiment, the plurality of power receiving modules 111 are arranged at intervals along the circumference of the rotor. Therefore, the rotation angle at which fading occurs in each power receiving module 111 is different. For example, when the first power receiving module 111a is positioned at a position offset by only an angle θ relative to the second power receiving module 111b about the axis O, as shown in graphs G1 and G2, the rotation position at which fading occurs in the second power receiving module 111b is offset by only an angle θ from the rotation position at which fading occurs in the first power receiving module 111a. Therefore, if a decrease in power received due to fading occurs in one power receiving module 111, it is highly likely that a decrease in power received due to fading will not occur in the other power receiving module 111. Therefore, by taking a logical sum of the detector outputs of the signals received by the plurality of power receiving modules 111 arranged at such intervals along the circumference, as shown in graph G3, it is possible to expect an output voltage that does not produce a decrease in power received due to fading at any rotation position. That is, by using the highest voltage among the voltages detected by multiple power receiving modules 111, the power receiving module type telemetry transmitter 110 can reduce the impact of power fluctuations caused by fading and receive a stable power supply.

[0071] To ensure a stable power supply while taking into account the effects of fading, the power supply unit 130 needs to output power with a margin to compensate for the power drop caused by fading. In this case, the size of the power supply equipment supplying power to the power supply unit 130 would increase. In contrast, the power receiving module type telemetry transmitter 110 according to the first embodiment can suppress the increase in the size of the power supply equipment supplying power to the power supply unit 130 by reducing the impact of power fluctuations.

[0072] Furthermore, the logic and circuit 112 of the power receiving module type telemetry transmitter 110 according to the first embodiment is a diode "OR" circuit composed of a combination of multiple diodes 521. That is, the multiple power receiving modules 111 of the power receiving module type telemetry transmitter 110 according to the first embodiment are each connected via diodes 521. Therefore, it is possible to prevent current from flowing backward to the power receiving module 111 side in the power receiving module type telemetry transmitter 110 according to the first embodiment. In addition, when the multiple power receiving modules 111 are not connected via diodes 521, current may flow backward from the power receiving module 111 with a large output to the power receiving module 111 with a small output, potentially damaging the power receiving module 111.

[0073] Furthermore, the power receiving module type telemetry transmitter 110 according to the first embodiment can be easily installed without replacing the existing power receiving module type telemetry transmitter according to the first embodiment by adding a power receiving module 111 and logic and circuit 112 to the existing power receiving module type telemetry transmitter according to Patent Document 1, etc.

[0074] (Second Implementation)

[0075] The telemetry system 100 according to the second embodiment will be described below.

[0076] The difference between the telemetry measurement system 100 in the second embodiment and the first embodiment lies in the structure of the power receiving module type telemetry transmitter 110.

[0077] (Structure of a power receiving module type telemetry transmitter)

[0078] Figure 6 This is a schematic circuit diagram showing the structure of the power receiving module type telemetry transmitter 110 according to the second embodiment.

[0079] The difference between the power receiving module type telemetry transmitter 110 according to the second embodiment and the first embodiment lies in the configuration of the DC / DC converter. In the power receiving module type telemetry transmitter 110 according to the first embodiment, the DC / DC converter 513 is provided after the detector 512 of each power receiving module 111. In contrast, in the power receiving module type telemetry transmitter 110 according to the second embodiment, the DC / DC converter 115 is provided between the logic and circuit 112 and the transmitting unit 114.

[0080] That is, the voltage output by the detector 512 of each power receiving module 111 is supplied to the logic and circuit 112. Then, the DC / DC converter 115 converts the voltage output by the logic and circuit 112 into a specified voltage value.

[0081] (Effects)

[0082] In the second embodiment, the power receiving module type telemetry transmitter 110 of the telemetry measurement system 100 uses a DC / DC converter 115 to convert the voltage output via diode 521 into a specified voltage value and uses it as a power source.

[0083] Here, the power-receiving module type telemetry transmitter 110 according to the first embodiment inputs the voltage converted by the DC / DC converter 115 to the logic and circuit 112 including the diode 521. It is known that if a voltage is supplied to the forward direction of the diode 521, a constant voltage drop will occur. Therefore, the voltage supplied to the transmitting unit 114 of the power-receiving module type telemetry transmitter 110 according to the first embodiment becomes the voltage that drops from the output voltage of the DC / DC converter 513.

[0084] In contrast, the power-receiving module type telemetry transmitter 110 according to the second embodiment converts the voltage output via diode 521 using a DC / DC converter 115, thus enabling the voltage of diode 521 without voltage drop to be supplied as power to the transmitting unit 114. That is, the power-receiving module type telemetry transmitter 110 according to the second embodiment can increase the power margin corresponding to the voltage drop of diode 521.

[0085] Furthermore, even when voltage conversion is performed at the end of the logic and circuit 112 as in the second embodiment, the power receiving module type telemetry transmitter 110 uses the highest voltage received by multiple power receiving antennas 511 and detected by detector 512. Therefore, similar to the first embodiment, it is possible to reduce the impact of power fluctuations caused by fading and receive a stable power supply.

[0086] (Third Implementation)

[0087] The telemetry system 100 according to the third embodiment will be described below.

[0088] The telemetry measurement system 100 according to the third embodiment differs from that of the first embodiment in the structure of the power receiving module type telemetry transmitter 110. Furthermore, the signal processing unit 122 according to the third embodiment determines whether the power receiving module type telemetry transmitter 110 is faulty based on the received signal.

[0089] (Structure of a power receiving module type telemetry transmitter)

[0090] Figure 7 This is a schematic circuit diagram showing the structure of the power receiving module type telemetry transmitter 110 according to the third embodiment.

[0091] The third embodiment of the power receiving module type telemetry transmitter 110 includes three power receiving modules 111, three logic and circuits 112, three sensors 113, and three transmitting units 114.

[0092] That is, the power receiving module type telemetry transmitter 110 includes a power receiving module 111A, a power receiving module 111B, a power receiving module 111C, a logic AND circuit 112A, a logic AND circuit 112B, a logic AND circuit 112C, a sensor 113A, a sensor 113B, a sensor 113C, a transmitting unit 114A, a transmitting unit 114B, and a transmitting unit 114C.

[0093] In the third embodiment, the three power receiving modules 111 are connected to a portion of the three logic and circuits 112. That is, one power receiving module 111 is not connected to all of the three logic and circuits 112. The three logic and circuits 112 are connected to two of the three power receiving modules 111.

[0094] Specifically, power receiving module 111A is connected to logic AND circuits 112A and 112B. Power receiving module 111B is connected to logic AND circuits 112A and 112C. Power receiving module 111C is connected to logic AND circuits 112B and 112C.

[0095] Each of the three transmitting units 114 is driven by the voltage input from its corresponding logic and AND circuit 112. Specifically, transmitting unit 114A is driven by the voltage input from logic and AND circuit 112A. Transmitting unit 114B is driven by the voltage input from logic and AND circuit 112B. Transmitting unit 114C is driven by the voltage input from logic and AND circuit 112C.

[0096] Three transmitting units 114 respectively transmit the measurement signals of the corresponding sensors 113. Specifically, transmitting unit 114A transmits the measurement signals of sensor 113A. Transmitting unit 114B transmits the measurement signals of sensor 113B. Transmitting unit 114C transmits the measurement signals of sensor 113C.

[0097] By configuring the power receiving module type telemetry transmitter 110 in this way, it is possible to determine the fault of the power receiving module 111 or the transmitting unit 114 based on the received signal received by the receiving device 120.

[0098] (Operation of the receiving device)

[0099] Figure 8 This is a schematic block diagram showing the structure of the signal processing unit 122 according to the third embodiment.

[0100] The signal processing unit 122 of the receiving device 120 according to the third embodiment includes an acquisition unit 701, a determination unit 702, a confirmation unit 703, a storage unit 704, a diagnostic unit 705, and a notification unit 706.

[0101] The acquisition unit 701 acquires the measurement signal received by the receiving antenna 121 and demodulated by the receiving unit (not shown).

[0102] The determination unit 702 determines whether the measurement signal acquired by the acquisition unit 701 has been received normally. For example, if no measurement signal is acquired from multiple power receiving module type telemetry transmitters 110, or if the true value cannot be determined due to excessive noise even though a measurement signal has been received, the determination unit 702 determines that the reception has failed.

[0103] The determination unit 703 determines the power receiving module type telemetry transmitter 110, which is the source of the measurement signal acquired by the acquisition unit 701.

[0104] The storage unit 704 stores the channel of the powered module type telemetry transmitter 110 and a flag indicating whether the measurement signal has been received correctly in an associated manner.

[0105] The diagnostic unit 705 diagnoses the possibility of a malfunction in the power receiving module type telemetry transmitter 110 based on the data stored in the storage unit 704.

[0106] The notification unit 706 notifies the diagnostic results by sending information for displaying the diagnostic results diagnosed by the diagnostic unit 705 to the display unit 123.

[0107] (Fault Diagnosis Methods)

[0108] Figure 9 This is a flowchart illustrating a fault diagnosis method for a power receiving module type telemetry transmitter 110 based on the signal processing unit 122 according to the third embodiment. The fault diagnosis is performed during the operation of the gas turbine 1.

[0109] The acquisition unit 701 acquires the measurement signals received by the receiving unit from each of the transmitting units 114 of the powered module type telemetry transmitter 110 (step S1). At this time, measurement signals from transmitting units 114A, 114B and 114C are received.

[0110] Next, the determination unit 702 determines whether each acquired measurement signal has been received normally (step S2). Then, the determination unit 703 determines the transmitting unit 114 of the transmitting source for each measurement signal (step S3). The storage unit 704 associates the information of the transmitting unit 114 of the transmitting source determined in step S3 with a correctness flag indicating whether the reception was correct and stores it for each measurement signal (step S4).

[0111] Next, the diagnostic unit 705 determines whether the receiving unit has received the measurement signal of the integer amount of the stator with respect to each transmitting unit 114 (step S5). For example, the diagnostic unit 705 refers to the storage unit 704 to determine whether all measurement signals of each transmitting unit 114 have been received.

[0112] If no measurement signal of integer cycle is received (step S5: No), the receiving device 120 returns to step S1 and continues to acquire measurement signals.

[0113] On the other hand, when a measurement signal of the whole cycle is received (step S5: Yes), the diagnostic unit 705 sums up the communication results of each transmitting unit 114 and determines for each transmitting unit 114 whether the communication was successful on the whole cycle, failed on a part, or failed completely (step S6).

[0114] Figure 10 This is a diagram showing the relationship between the correctness of communication and the fault state according to the third embodiment. Hereinafter, as... Figure 10 As shown, the diagnostic unit 705 diagnoses whether there is any abnormality in the powered module type telemetry transmitter 110 based on the total communication results in step S6.

[0115] First, the diagnostic unit 705 determines whether the communication of all transmitters 114 is successful on an integer cycle (step S7). When the communication of all transmitters 114 is successful on an integer cycle (step S7: Yes), the diagnostic unit 705 diagnoses that the power receiving module type telemetry transmitter 110 has no abnormality (step S8).

[0116] Next (step S7: No), the diagnostic unit 705 determines whether the communication of one transmitter 114 fails for a portion of the cycle while the communication of other transmitters 114 succeeds for the entire cycle (step S9). When the communication of one transmitter 114 fails for a portion of the cycle while the communication of other transmitters 114 succeeds for the entire cycle (step S9: Yes), the diagnostic unit 705 diagnoses that the transmitter 114 whose communication failed for a portion of the cycle may be faulty (step S10). For example, when transmitter 114A fails to communicate for a portion of the cycle while transmitters 114B and 114C succeed in communication for the entire cycle, the diagnostic unit 705 diagnoses that transmitter 114A may be faulty.

[0117] Next (step S9: No), the diagnostic unit 705 determines whether communication between the two transmitters 114 fails for a portion of the cycle while communication between the other transmitters 114 succeeds for the entire cycle (step S11). When communication between the two transmitters 114 fails for a portion of the cycle while communication between the other transmitters 114 succeeds for the entire cycle (step S11: Yes), the diagnostic unit 705 diagnoses that the power receiving module 111 connected to the two transmitters 114 whose communication failed has malfunctioned (step S12). For example, when transmitters 114A and 114C fail to communicate for a portion of the cycle while transmitter 114B succeeds for the entire cycle, the diagnostic unit 705 diagnoses that the power receiving module 111B connected to transmitters 114A and 114C has malfunctioned. This is because, due to the malfunction of the power receiving module 111B, transmitters 114A and 114C are more likely to be affected by fading. Furthermore, at this time, the two transmitting units 114 that the diagnostic unit 705 diagnosed as having communication failure may also be malfunctioning.

[0118] Next (step S11: No), the diagnostic unit 705 determines whether communication of one or two transmitters 114 fails throughout the entire cycle while communication of the other transmitters 114 succeeds throughout the entire cycle (step S13). When communication of one or two transmitters 114 fails throughout the entire cycle while communication of the other transmitters 114 succeeds throughout the entire cycle (step S13: Yes), the diagnostic unit 705 diagnoses that the transmitter 114 that failed to communicate has malfunctioned (step S14). For example, when transmitters 114B and 114C fail to communicate throughout the entire cycle and only transmitter 114A succeeds in communication throughout the entire cycle, the diagnostic unit 705 diagnoses that transmitters 114B and 114C may be malfunctioning. Furthermore, when there are two transmitters 114 that fail to communicate throughout the entire cycle, the diagnostic unit 705 diagnoses that the power receiving module 111 connected to these two may also be malfunctioning. That is, when only the transmitting unit 114A successfully communicates throughout the cycle, the power receiving module 111C connected to the transmitting unit 114B and the transmitting unit 114C may malfunction.

[0119] When communication of all transmitting units 114 fails throughout the entire cycle or fails on a portion of the cycle (step S13: No), the diagnostic unit 705 diagnoses the possibility that all powered modules 111 and transmitting units 114 are faulty (step S15).

[0120] Then, the notification unit 706 outputs display data indicating the diagnostic results of steps S8, S10, S12, S14, or S15 to the display unit 123 (step S16). This allows the user to be notified of the fault diagnosis results of the power receiving module type telemetry transmitter 110 diagnosed by the signal processing unit 122.

[0121] (Other implementation methods)

[0122] The above description of one embodiment, with reference to the accompanying drawings, illustrates that the specific structure is not limited to the described structure and various design changes are possible. That is, in other embodiments, the order of the above processes can be appropriately altered. Furthermore, some processes can be executed in parallel.

[0123] Furthermore, the power receiving module type telemetry transmitter 110 according to the first and second embodiments includes two power receiving modules 111, but is not limited to this. For example, the power receiving module type telemetry transmitter 110 according to other embodiments may include three or more power receiving modules 111. Furthermore, the power receiving module type telemetry transmitter 110 according to the third embodiment includes three power receiving modules 111, logic and circuitry 112, sensors 113, and a transmitting unit 114, but the number is not limited to this. For example, the power receiving module type telemetry transmitter 110 according to other embodiments may include four or more power receiving modules 111 and four or more transmitting units 114. However, when diagnosing faults as in the third embodiment, the number of logic and circuitry 112, sensors 113, and transmitting units 114 is set to the same number.

[0124] The signal processing unit 122 in the third embodiment can be a single computer, or it can function as a signal processing unit 122 by distributing the structure of the signal processing unit 122 separately in multiple computers and having the multiple computers cooperate with each other.

[0125] (Computer Architecture)

[0126] Figure 11 It is a schematic block diagram representing the structure of a computer involved in at least one embodiment.

[0127] The computer 90 includes a processor 91, a memory 93, a storage 95, an interface 97, and an AD converter 99. The AD converter 99 converts the measurement signal received by the receiving antenna 121 and demodulated by the receiving unit (not shown) into a digital signal. The AD converter 99 transmits this digital signal to the processor 91 via the interface 97.

[0128] The aforementioned signal processing unit 122 is installed in the computer 90. Furthermore, the operations of each of the aforementioned processing units can be stored as a program in memory 95 or memory 93. When the program is stored in memory 95, the processor 91 reads the program from memory 95 and expands it into memory 93. The processor 91 executes the aforementioned processing according to the program in memory 93. Furthermore, the processor 91 secures the corresponding storage area in memory 93 according to the program. Examples of the processor 91 include a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), and a microprocessor.

[0129] The program is used to implement a portion of the functions that enable the computer 90 to perform. For example, the program can perform functions by combining with other programs already stored in memory 95 or with other programs installed in other devices. Additionally, in other embodiments, the computer 90 may, in addition to or replacing the above-described structure, possess a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device). Examples of PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array). In this case, some or all of the functions implemented by the processor 91 can be implemented by this integrated circuit. Such an integrated circuit is also included in one example of the processor 91.

[0130] Examples of memory 95 include magnetic disks, optical disks, optical discs, and semiconductor memory. Memory 95 can be an internal medium directly connected to the bus of computer 90, or an external medium connected to computer 90 via interface 97 or a communication line. Furthermore, when the program is transmitted to computer 90 via the communication line, computer 90 can expand the program into memory 93 and execute the aforementioned processing. In at least one embodiment, memory 95 is a non-temporary tangible storage medium.

[0131] Furthermore, the program can be a part of the program used to implement the aforementioned functions. Additionally, the program can also be a so-called differential file (differential program) that implements the aforementioned functions by combining with other programs already stored in memory 95.

[0132] (Postscript)

[0133] The powered module type telemetry transmitter (110), telemetry measurement system (100) and rotating machinery described in each embodiment can be understood as follows.

[0134] (1) According to the first method, the power receiving module type telemetry transmitter (110) is a power receiving module type telemetry transmitter (110) of the telemetry measurement system (100), which is disposed on the rotor and communicates by receiving power from the power transmission antenna (131) formed in an arc shape on the stator side. The power receiving module type telemetry transmitter (110) includes: a plurality of power receiving modules (111) arranged circumferentially on the rotor; a logic and circuit (112) that outputs the highest voltage among the voltages input from the plurality of power receiving modules (111); a sensor (113) that measures the state of the monitored object and outputs measurement data representing the state; and a transmitting unit (114) that is driven by the voltage input from the logic and circuit (112) as a power source and transmits a wireless signal containing the measurement data of the sensor (113).

[0135] According to this method, the power receiving module type telemetry transmitter (110) can receive a stable power supply by using the maximum power received by multiple power receiving modules (111).

[0136] (2) According to the second method, the power receiving module type telemetry transmitter (C1I0) involved in the first method can be as follows: the logic and circuit (112) has multiple diodes (521) and output wiring (522), the anodes of the multiple diodes (521) are respectively connected to the multiple power receiving modules (111), and the cathodes of the multiple diodes (521) are connected in parallel to the output wiring (522).

[0137] According to this method, it is possible to prevent current from flowing into the small-output power receiving module (111) in the power receiving module type telemetry transmitter (C 110).

[0138] (3) According to the third method, the power receiving module type telemetry transmitter C 110 involved in the first or second method may be as follows: it has a plurality of DC / DC converters (513) that convert the voltages output by the plurality of power receiving modules (111) into specified voltage values ​​respectively, and the logic and circuit (112) outputs the largest voltage among the voltages input from the plurality of DC / DC converters (513).

[0139] If the structure is as described in this article, the structure of the power receiving module type telemetry transmitter (110) of this invention can also be easily applied to existing power receiving module type telemetry transmitters.

[0140] (4) According to the fourth method, the power receiving module type telemetry transmitter (110) involved in the first or second method may be as follows: it includes a DC / DC converter (115) that converts the voltage output by the logic and circuit (112) into a specified voltage value, and the transmitting unit (114) is driven by the voltage input from the DC / DC converter (115) as a power source.

[0141] According to this method, the output voltage of the DC / DC converter (115) can be supplied to the transmitter (114) without being affected by the voltage drop caused by the diode (521).

[0142] (5) According to the fifth method, the power receiving module type telemetry transmitter (110) involved in any of the first to fourth methods may be as follows: comprising: a plurality of logic and circuits (112), including the logic and circuits (112); and a plurality of transmitting units (114), including the transmitting units (114) and provided corresponding to the plurality of logic and circuits (112), wherein the plurality of power receiving modules (111) are connected to a portion of the plurality of logic and circuits (112), the plurality of logic and circuits (112) are connected to two of the plurality of power receiving modules (111), and the plurality of transmitting units (114) are driven by the voltage input from the plurality of logic and circuits (112) as a power source.

[0143] According to this method, the fault status of the power receiving module type telemetry transmitter (110) can be determined based on the communication results of multiple transmitting units (114).

[0144] (6) According to the sixth method, the telemetry system (100) includes: a power-receiving module type telemetry transmitter (110) as described in any of the first to fifth methods; a power transmission antenna (131) disposed on the stator and formed in an arc shape; an oscillator (132) supplying a high-frequency signal to the power transmission antenna (131); a receiving antenna (121) disposed on the stator and formed in an arc shape; and a receiving unit receiving the wireless signal from the power-receiving module type telemetry transmitter (110) via the receiving antenna (121).

[0145] (7) According to the seventh method, the telemetry measurement system (100) includes: a power receiving module type telemetry transmitter (110) as described in the fifth method; a power transmission antenna (131) disposed on the stator and formed in an arc shape; an oscillator (132) supplying a high-frequency signal to the power transmission antenna (131); a receiving antenna (121) disposed on the stator and formed in an arc shape; a receiving unit that receives the wireless signal from the power receiving module type telemetry transmitter (110) via the receiving antenna (121); a determination unit (702) that determines whether the reception of the wireless signal from the plurality of transmitting units (114) in the receiving unit is correct or not; and a diagnostic unit (705) that diagnoses a fault in the receiving antenna (121) or the transmitting unit (114) based on whether the reception is correct or not.

[0146] (8) According to the eighth method, the rotating machinery includes: the stator; the rotor having a rotating shaft and a plurality of moving blades, the rotating shaft rotating about an axis (O) relative to the stator, the plurality of moving blades being arranged to extend radially from the outer peripheral surface of the rotating shaft; and a telemetry system (100) according to the sixth or seventh method, wherein the sensors (113) are respectively disposed on the moving blades.

[0147] (9) According to the ninth method, the telemetry transmission method is a telemetry transmission method using a power-receiving module type telemetry transmitter (110), wherein the power-receiving module type telemetry transmitter (110) is a power-receiving module type telemetry transmitter (110) of a telemetry measurement system (100), which is disposed on the rotor and communicates by receiving power from a power transmission antenna (131) formed in an arc shape on the stator side. The power-receiving module type telemetry transmitter (110) comprises: power-receiving module type telemetry transmitters (110) arranged at circumferential intervals on the rotor; and sensors (113... The telemetry transmission method comprises the following steps: the plurality of power receiving modules (111) receive power from the power transmission antenna (131); the transmission unit (114) drives the highest voltage among the voltages input from the plurality of power receiving modules (111) as a power source; and the transmission unit (114) transmits a wireless signal containing the measurement data of the sensor (113).

[0148] Industrial availability

[0149] This invention relates to a power receiving module type telemetry transmitter, a telemetry measurement system, rotating machinery, and a telemetry transmission method.

[0150] According to the present invention, it is possible to stably receive power from a ring-shaped power transmission antenna.

[0151] Symbol Explanation

[0152] 1-Gas turbine, 100-Telemetry measurement system, 110-Powered module type telemetry transmitter, 111-Powered module, 112-Logic and circuit, 113-Sensor, 114-Transmitter, 115-DC / DC converter, 120-Receiver, 121-Receiver antenna, 130-Power supply, 131-Transmission antenna, 132-Oscillator, 511-Powered antenna, 513-DC / DC converter, 521-Diode, 522-Output wiring, 702-Decision unit, 705-Diagnostic unit.

Claims

1. A power-receiving module type telemetry transmitter that is a power-receiving module type telemetry transmitter of a telemetry measurement system, which is provided to a rotor, and which performs communication by electric power received from a power transmission antenna formed in a circular arc shape on a stator side, the power-receiving module type telemetry transmitter comprising: three or more power-receiving modules arranged at intervals in a circumferential direction on the rotor; logic and circuits equal in number to the power-receiving modules, which output a voltage that is the highest among voltages input from the three or more power-receiving modules; sensors equal in number to the power-receiving modules, which measure a state of a monitoring object and output measurement data indicating the state; and transmission sections equal in number to the power-receiving modules, which are driven by the voltage input from the logic and circuits as a power supply, and which transmit a wireless signal containing the measurement data of the sensors, each of the logic and circuits being connected to two of the three or more power-receiving modules, the transmission sections being respectively driven by the voltage input from the logic and circuits as a power supply.

2. The power-receiving module type telemetry transmitter according to claim 1, wherein the logic and circuits include a plurality of diodes and an output line, anodes of the plurality of diodes are respectively connected to the three or more power-receiving modules, and cathodes of the plurality of diodes are connected in parallel to the output line.

3. The power-receiving module type telemetry transmitter according to claim 1, comprising a plurality of DC / DC converters that respectively convert the voltage output by the three or more power-receiving modules to a prescribed voltage value, the logic and circuits outputting a voltage that is the largest among voltages input from the plurality of DC / DC converters.

4. The power-receiving module type telemetry transmitter according to claim 1, comprising a DC / DC converter that converts the voltage output by the logic and circuits to a prescribed voltage value, the transmission section being driven by the voltage input from the DC / DC converter as a power supply.

5. The power-receiving module type telemetry transmitter according to any one of claims 1 to 4, comprising: a plurality of logic and circuits including the logic and circuits; and a plurality of transmission sections including the transmission section, and provided corresponding to the plurality of logic and circuits, the three or more power-receiving modules being connected to a part of the plurality of logic and circuits, two of the three or more power-receiving modules being connected to the plurality of logic and circuits, the plurality of transmission sections respectively being driven by the voltage input from the plurality of logic and circuits as a power supply.

6. A telemetry measurement system comprising: the power-receiving module type telemetry transmitter according to any one of claims 1 to 5; a power transmission antenna provided to a stator and formed in a circular arc shape; an oscillator that supplies a high-frequency signal to the power transmission antenna; a reception antenna provided to the stator and formed in a circular arc shape; and a reception section that receives the wireless signal from the power-receiving module type telemetry transmitter via the reception antenna.

7. A telemetry measurement system comprising: the power-receiving module type telemetry transmitter according to claim 5; a power transmission antenna provided to a stator and formed in a circular arc shape; ​ an oscillator that supplies a high-frequency signal to the power transmission antenna; a receiving antenna that is provided to the stator and is formed in a circular arc shape; a receiving section that receives the wireless signal from the power-receiving module type telemetry transmitter via the receiving antenna; a determination section that determines whether or not reception of the wireless signal from the plurality of transmission sections is correct at the receiving section; and a diagnosis section that diagnoses a failure of the receiving antenna or the transmission section based on whether or not the reception is correct.

8. A rotary machine comprising: the stator; the rotor having a rotary shaft that rotates about an axis with respect to the stator and a plurality of moving vanes that are provided in a radial manner from an outer peripheral surface of the rotary shaft; and the telemetry measurement system according to claim 6 or 7, the sensors are respectively provided to the moving vanes.

9. A telemetry transmission method that is a telemetry transmission method using a power-receiving module type telemetry transmitter that is a power-receiving module type telemetry transmitter of a telemetry measurement system, is provided to a rotor, and performs communication by power received from a power transmission antenna that is formed in a circular arc shape on a stator side, the power-receiving module type telemetry transmitter comprises: three or more power-receiving modules that are arranged at intervals in a circumferential direction on the rotor; logic and circuits that are the same number as the power-receiving modules and output a highest voltage among voltages input from the three or more power-receiving modules; sensors that are the same number as the power-receiving modules, measure a state of a monitoring object, and output measurement data indicating the state; and a transmission section that transmits a wireless signal including measurement data of the sensors, each of the logic and circuits is connected to two of the three or more power-receiving modules, the telemetry transmission method comprises the following steps: the three or more power-receiving modules receive power from the power transmission antenna; the transmission section is driven as a power supply using a highest voltage among voltages input from the three or more power-receiving modules; and the transmission section transmits a wireless signal including measurement data of the sensors.

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