JP2022050019A - Rotation shaft runout measurement system, control device, and runout measurement method - Google Patents

Abstract

To provide a rotation shaft runout measurement system, a measurement device, a control device, and a runout measurement method that can accurately measure the shaft runout of rotation shafts.SOLUTION: A runout measurement system 1 includes: a plurality of measurement devices 100 that measure runout widths of a rotation shaft 11 at a plurality of respective measurement places set to the rotation shaft 11; and a control device 200 communicatively connected to the measurement devices 100. The control device 200 includes: an operation unit that accepts a shaft runout measurement start instruction for the rotation shaft 11 by a user; a communication unit that transmits a control signal to request the measurement devices 100 to measure shaft runout when the measurement start instruction from the user is accepted; an acquisition unit that acquires measurement data on the shaft runout of the rotation shaft 11 transmitted from the measurement devices 100 together with identification information specific to the respective measurement places; and a storage unit that stores, in a storage unit, the acquired measurement data on the shaft runout of the rotation shaft 11 in association with the identification information specific to the respective measurement places.SELECTED DRAWING: Figure 1

Description

The present invention relates to a runout measurement system, a measuring device, a control device, and a runout measurement method for a rotating shaft.

At the time of assembling the water turbine generator, runout measurement (shaft runout measurement) is performed in which the rotating shaft is rotated around the shaft and the shaft runout of the rotating shaft is measured. In the runout measurement, each measurer reads each dial indicator at a plurality of measurement points set at intervals in the longitudinal direction of the rotation axis while the rotation axis is rotated at a low speed. For this reason, a large number of personnel are required for the runout measurement, and the reading of the dial indicator inevitably varies. In order to solve such a problem, for example, Patent Document 1 discloses a system in which an axial runout of a rotating shaft is measured by an eddy current type displacement sensor and the measurement data of the axial runout is transmitted to a computer.

Japanese Unexamined Patent Publication No. 7-83784

In the system of Patent Document 1, a plurality of measurement points are set at equal intervals in the circumferential direction of the rotation axis, and markings are made at positions corresponding to the measurement points of the rotation axis. Then, at the timing when the marking of the rotating shaft is detected by the positioning sensor, the eddy current type displacement sensor is instructed to execute the runout measurement. Therefore, in the system of Patent Document 1, if the marking detection by each positioning sensor fails or the transmission / reception of the output signal from each positioning sensor is delayed, the axis of the rotating shaft swings at a position deviated from the measurement point. Will be measured. Further, such a problem is not limited to the case of measuring the shaft runout on the rotating shaft of the water turbine generator, but also exists when measuring the shaft runout on another rotating shaft.

The present invention has been made based on such a background, and provides a runout measurement system, a measuring device, a control device, and a runout measurement method for a rotating shaft capable of accurately measuring the shaft runout of the rotating shaft. With the goal.

In order to achieve the above object, the runout measurement system according to the present invention is
It is a runout measurement system including a plurality of measuring devices for measuring the swing width of the rotating shaft at a plurality of measurement points set on the rotating shaft, and a control device communicatively connected to each measuring device. ,
Each measuring device
Upon receiving the request from the control device, the measuring unit for measuring the shaft runout of the rotating shaft at each measurement point, and the measuring unit.
A communication unit that transmits the measured axial runout measurement data of the rotating shaft to the control device together with identification information unique to each measurement point is provided.
The control device is
An operation unit that receives an instruction from the user to start measuring the shaft runout of the rotating shaft, and
When receiving an instruction to start measurement from the user, a communication unit that sends a control signal to request each measuring device to measure shaft runout, and a communication unit.
An acquisition unit that acquires measurement data of the shaft runout of the rotating shaft transmitted from each measuring device together with identification information unique to each measurement point, and an acquisition unit.
It is provided with a storage unit that stores the acquired measurement data of the shaft runout of the rotating shaft in association with the identification information unique to each measurement point.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a runout measurement system, a measuring device, a control device and a runout measurement method for a rotating shaft capable of accurately measuring the shaft runout of the rotating shaft.

It is a figure which shows the structure of the runout measurement system which concerns on embodiment of this invention. It is a figure which shows the structure of the water turbine generator which concerns on embodiment of this invention. It is a top view which shows the arrangement of the measuring apparatus which concerns on embodiment of this invention. It is a figure which shows the plurality of measurement points set at each measurement point of the rotation axis which concerns on embodiment of this invention. It is a block diagram which shows the hardware composition of the measuring apparatus which concerns on embodiment of this invention. (A) is a block diagram showing a hardware configuration of a control device according to an embodiment of the present invention, and (b) shows an example of a data table of a measured value storage unit according to an embodiment of the present invention. It is a figure. It is a figure which shows an example of the data table of the report which concerns on embodiment of this invention. It is a figure which shows an example of the pie chart of the report which concerns on embodiment of this invention. Both (a) and (b) are diagrams showing an example of a line graph of a report according to an embodiment of the present invention. Both (a) and (b) are flowcharts showing the flow of the measured value acquisition process which concerns on embodiment of this invention. It is a flowchart which shows the flow of the report generation processing which concerns on embodiment of this invention.

Hereinafter, embodiments of the rotary shaft runout measurement system, measuring device, control device, and runout measurement method according to the present invention will be described in detail with reference to the drawings. In each drawing, the same or equivalent parts are designated by the same reference numerals.

As shown in FIG. 1, the runout measurement system 1 measures the shaft runout of the rotary shaft 11 at a plurality of measurement points set on the rotary shaft 11 of the water turbine generator 10, and determines the shaft runout based on the measurement data of the shaft runout. It is a system that generates a report of. By referring to the report generated by the runout measurement system 1, the user determines whether or not the shaft runout of the rotary shaft 11 is within the allowable value range and whether or not the position of the rotary shaft 11 needs to be adjusted. do.

The runout measurement system 1 is a control that is communicably connected to a plurality of measuring devices 100 for measuring the shaft runout of the rotating shaft 11 at each measurement point and is communicably connected to each measuring device 100, and acquires measurement data from each measuring device 100. The device 200 is provided. The measuring device 100 and the control device 200 are connected to each other so as to be communicable with each other via, for example, a wireless communication line.

The axial runout of the rotary shaft 11 is also called a circumferential runout, and is an index showing how much the outer peripheral surface of the rotary shaft 11 swings in the radial direction when the rotary shaft 11 is rotated around the central axis. The axis runout measurement points of the rotating shaft 11 are set at a plurality of points at intervals in the longitudinal direction of the rotating shaft 11, and a measuring device 100 for measuring the displacement amount of the outer peripheral surface of the rotating shaft is installed at each measuring point. Has been done. Each measuring device 100 receives a control signal transmitted from the control device 200 when the measurer operates the foot switch S in a state where the rotating shaft 11 is rotated at a low speed, and the shaft of the rotating shaft 11 receives the control signal at the same timing. Measure the runout.

As shown in FIG. 2, the water turbine generator 10 is installed in the building of a hydroelectric power plant and converts the energy of water supplied from a hydraulic iron pipe into electricity. The water turbine generator 10 is, for example, a vertical shaft water turbine generator in which a rotating shaft 11 is erected. The turbine generator 10 includes a turbine 12 that converts water energy into rotational kinetic energy, a generator 13 that is mechanically connected to the turbine 12 and converts rotational kinetic energy transmitted from the turbine 12 into electricity. To prepare for.

The turbine 12 is, for example, a Francis turbine. The water turbine 12 includes a runner 12a that is rotated by the flow of water, and a shaft 12b that transmits the rotation generated by the runner 12a to the generator. The generator 13 is, for example, a three-phase AC synchronous generator. The generator includes a stator 13a fixed to the housing and a rotor 13b that rotates inside the stator 13a.

The shaft 12b of the water turbine 12 and the rotor 13b of the generator 13 are connected via a coupling 14 to form one rotating shaft 11 extending in the vertical direction. The rotor 13b of the generator 13 is rotatably supported by a thrust bearing 15 fixed to the housing. The thrust bearing 15 is a bearing that receives a force (thrust) acting in the longitudinal direction of the rotating shaft. The thrust bearing 15 includes a fixing plate 15a fixed to a housing and a rotating plate 15b fixed to a rotor 13b of a generator 13 and rotating with respect to the fixing plate 15a.

As shown in FIG. 2, each measuring device 100 is installed at, for example, five measuring points A to E set apart from each other in the longitudinal direction of the rotating shaft 11. The five measurement points A to E are set at the upper portion of the thrust bearing 15, the lower portion of the thrust bearing 15, the generator 13 side of the coupling 14, the turbine 12 side of the coupling 14, and the turbine 12. Since each measuring device 100 measures the shaft runout of the rotating shaft 11 at the same timing instructed by the measurer, when the measurer operates the foot switch S, the measured values (instantaneous values) of the five shaft runouts are obtained. can get. Hereinafter, the case where there are five measurement points A to E will be described as an example, but the positions and numbers of the above measurement points are merely examples, and the positions and numbers of the shaft runout measurement points are the water turbine generator 10. It is set based on the specifications of.

As shown in FIG. 3, the measuring device 100 is a contact type displacement meter including a contactor CN whose tip end contacts the rotary shaft 11, and the rotary shaft 11 is in a state where the contactor CN is in contact with the rotary shaft 11. It is arranged so as to extend in the radial direction. Each measuring device 100 is detachably fixed to the housing 17 of the water turbine generator 10 via, for example, a magnet base 16. Markers M1, M2, M3, ..., M8 are attached to the measurement points A to E of the rotary shaft 11 at positions corresponding to the measurement points of the rotary shaft 11.

As shown in FIG. 4, the measurement points are the positions where the axial runout of the rotary shaft 11 at each measurement point A to E is measured, and the measurement points A to E of the rotary shaft 11 are on the same circumference. A plurality of measurement points are set so as to be evenly spaced in the circumferential direction. The measurement points set at the measurement points A to E are set to the same position (angle) in the circumferential direction so that the positions (angles) for measuring the axial runout of the rotating shaft 11 are aligned with each other. For example, as shown by the dotted line in FIG. 4, each measurement point m1 is set at the same position (angle) for each measurement point A to E, and is set at the same position (angle) with the marker M1. The number of measurement points at one measurement point corresponds to the number of markers, for example, eight, and the measurement points are arranged at an angle of 45 ° from each other.

Returning to FIG. 3, at the time of runout measurement, the rotating shaft 11 is slowly rotated at a constant speed, and the measurer controls the control device at the timing when the marker M1 of the rotating shaft 11 comes into contact with the contactor CN of the measuring device 100. Operate the foot switch S of 200. When the foot switch S is operated, the control device 200 instructs each measuring device 100 to measure the shaft runout. When each measuring device 100 receives an instruction from the control device 200, each measuring device 100 measures the axial runout of the measuring point corresponding to the marker M1 at each measuring point A to E.

After that, since the markers M2, M3, ..., M8 of the rotating shaft 11 sequentially contact the contact CN of the measuring device 100, the measurer repeatedly operates the foot switch S of the control device 200 at these timings. Therefore, the measurer operates the foot switch eight times from the time when the foot switch S is first operated until the rotation shaft 11 makes one rotation.

As shown in FIG. 5, the measuring device 100 measures the shaft runout of the rotating shaft 11 at each measurement point A to E set on the rotating shaft 11 of the water turbine generator 10, and the measurement data of the shaft runout is obtained by the control device 200. It is a device that transmits in real time toward. The measuring device 100 is, for example, a dial indicator with a transmission / reception function. The dial indicator, also called a dial gauge, measures the displacement of the distance from the dial indicator to the object by bringing the tip of the contact CN into contact with the object and detecting the translational movement of the contact CN.

The measuring device 100 includes an operation unit 110, a display unit 120, a measuring unit 130, a communication unit 140, a storage unit 150, and a control unit 160. Each part of the measuring device 100 is connected to each other via an internal bus (not shown).

The operation unit 110 receives a user's instruction and supplies an operation signal corresponding to the accepted operation to the control unit 160. The operation unit 110 includes, for example, a switch that accepts an operation for instructing the on / off of the measuring device 100.

The display unit 120 displays various images to the user based on the data supplied from the control unit 160. The display unit 120 displays, for example, the measured value of the shaft runout of the rotating shaft 11 in real time.

The measuring unit 130 measures the shaft runout of the rotating shaft 11 based on the control signal from the control unit 160. The measuring unit 130 is, for example, a dial indicator main body, and includes a contactor CN that contacts the rotating shaft 11 and an encoder that detects the displacement of the contactor CN and supplies the detected displacement data to the control unit 160.

The communication unit 140 is an interface capable of connecting to a communication network such as the Internet. For example, the communication unit 140 receives a control signal from the control device 200 to instruct the start of measurement, and transmits the measurement data of the runout measurement to the control device 200 in real time. The communication unit 140 may be, for example, a wireless transceiver connected to the dial indicator via a USB (Universal Serial Bus) cable.

The storage unit 150 includes, for example, a RAM (Random Access Memory), a ROM (Read Only Memory), and a flash memory. The storage unit 150 stores programs and various data executed by the control unit 160. The storage unit 150 stores identification information regarding measurement points A to E in which each measuring device 100 is installed. In addition, the storage unit 150 temporarily stores various types of information and the like, and also functions as a work memory for the control unit 160 to execute processing.

The control unit 160 includes a processor such as a CPU (Central Processing Unit) and controls each unit of the measuring device 100. The control unit 160 executes the measured value acquisition process of FIG. 10B by executing the program stored in the storage unit 150. Specifically, when the control unit 160 receives an instruction to start measurement from the control device 200, the control unit 160 controls the measurement unit 130 to measure the axial runout of the rotating shaft 11 at the measurement point. Further, the control unit 160 associates the measurement data of the axial runout with the identification information about the measurement points A to E stored in the storage unit 150, controls the communication unit 140, and uses the identification information about the measurement points A to E. It also functions as a transmission unit that transmits the associated axis runout measurement data to the control device 200 in real time.
The above is the hardware configuration of the measuring device 100.

As shown in FIG. 6A, the control device 200 acquires the measurement data of the shaft runout transmitted from each measuring device 100, and prepares a report based on the measurement data. The control device 200 is, for example, a general-purpose computer. The control device 200 includes an operation unit 210, a display unit 220, a communication unit 230, a storage unit 240, and a control unit 250. Each part of the control device 200 is connected to each other via an internal bus (not shown).

The operation unit 210 receives the instruction of the measurer and supplies the operation signal corresponding to the accepted operation to the control unit 250. The operation unit 210 includes, for example, a mouse and a keyboard. Further, the operation unit 210 includes, for example, a foot switch S that accepts an operation of a measurer (user) who instructs a timing to read a measured value of shaft runout.

The display unit 220 displays various images to the measurer based on the image data supplied from the control unit 250. The display unit 220 displays, for example, a report including measured values of shaft runout at each measurement point A to E of the rotating shaft 11.

The operation unit 210 and the display unit 220 may be configured by a touch panel. The touch panel displays an operation screen for accepting a predetermined operation, and supplies an operation signal corresponding to the position where the measurer has performed a contact operation on the operation screen to the control unit 250.

The communication unit 230 is an interface capable of connecting to a communication network such as the Internet. The communication unit 230 receives, for example, data regarding the measured value transmitted from the dial indicator. The communication unit 230 may be, for example, a wireless transceiver connected to a computer via a USB cable.

The storage unit 240 includes, for example, a RAM, a ROM, a flash memory, and a hard disk. The storage unit 240 stores programs and various data executed by the control unit 250. The storage unit 240 also temporarily stores various types of information and functions as a work memory for the control unit 250 to execute processing. Further, the storage unit 240 includes a measured value storage unit 241 and a report storage unit 242.

As shown in FIG. 6B, the measured value storage unit 241 stores the measured value of the shaft runout of the rotating shaft 11 in association with the identification information of the measurement points A to E and the identification information of the measurement point. The identification information of the measurement points A to E is information unique to each of the measurement points A to E set on the rotating shaft 11, in other words, information unique to each measuring device 100.

The measurement point identification information is unique information for identifying the measurement points set in the measurement points A to E. The measurement points are expressed as, for example, m1, m2, ..., And correspond to the markers M1, M2, ... Provided on the rotation axis 11, respectively. The measurement point identification information may be set in the order of m1, m2, ... Based on the number of times the control device 200 receives the measurement data of the shaft runout from the measurement start time. For example, when the measurer operates the foot switch S at the timing when the marker M1 of the rotation axis 11 comes into contact with the contactor CN, the number of times of measurement data received by the control device 200 is counted as the first time, so that the measurement point is related. The identification information may be set to m1.

The control unit 250 includes a processor such as a CPU, and controls each unit of the control device 200. The control unit 250 executes the measured value acquisition process of FIG. 10A and the report generation process of FIG. 11 by executing the program stored in the storage unit 240. The control unit 250 functionally includes an acquisition unit 251, a calculation unit 252, a report generation unit 253, and an output unit 254.

The acquisition unit 251 acquires the measured value of the shaft runout transmitted from each measuring device 100 and associated with the identification information of the measurement points A to E, and the identification information of the measurement points A to E and the measurement points m1 to each. It is stored in the measured value storage unit 241 in association with the identification information of m8. Further, the acquisition unit 251 counts the number of times that the measured value of the shaft runout is acquired, and sets the identification information of the measurement point based on the number of times of counting. Upon receiving the instruction of the measurer, the acquisition unit 251 also functions as a transmission unit that transmits a signal requesting the measurement of the shaft runout to each measuring device 100.

The calculation unit 252 calculates the adjustment value of the shaft runout at each measurement point m1 to m8 for each measurement point A to E of the rotating shaft 11 from the measurement value of the shaft runout acquired by the acquisition unit 251. The adjustment value of the shaft runout is the amount of radial displacement of the rotating shaft 11 required to adjust the eccentricity of the rotating shaft 11. For example, when the measured value of the shaft runout at the measurement point m1 of the upper bearing is 10/100 mm, if the adjustment value of the measurement point m5 at the position corresponding to the measurement point m1 of the upper bearing is set to 5/100 mm, the rotating shaft The eccentricity of 11 can be adjusted to the original position.

The report generation unit 253 generates a report showing the result of the shaft runout measurement based on the measured value of the shaft runout acquired by the acquisition unit 251 and the adjustment value of the shaft runout calculated by the calculation unit 252. The report contains measured and adjusted values for one rotation of the rotating shaft 11 on one sheet, including, for example, the data table of FIG. 7, the pie chart of FIG. 8 and the line graph of FIG. In the report, the number of sheets equal to the number of rotations of the rotation shaft 11 from the start of the measurement of the shaft runout is generated.

As shown in FIG. 7, the data table of the report includes the measured value of the shaft runout at the measurement points m1 to m8 of each measurement point A to E, the adjusted value of the shaft runout, and the reading value of the sensor (dial indicator).

As shown in FIG. 8, the pie chart of the report is generated separately for the measured and adjusted values. In FIG. 8, a pie chart at the bottom of the bearing is shown as an example, and this pie chart is created for each measurement point A to E. The pie chart of the measured value of the shaft runout shows in which direction the rotation axis 11 is eccentric. In the pie chart at the bottom of the bearing shown on the left side of FIG. 8, it can be understood that the pie chart is eccentric in the directions of the measurement points m3 to m6. Further, the pie chart of the adjustment value of the shaft runout shows in which direction the rotation axis 11 should be adjusted in order to adjust the eccentricity shown by the pie chart of the measured value of the shaft runout. In the pie chart at the bottom of the bearing shown on the right side of FIG. 8, it can be understood that the position adjustment is necessary in the directions of the measurement points m7, m8, m1 and m2 to adjust the eccentricity.

As shown in FIGS. 9A and 9B, the line graph of the report is generated separately for the measured value and the adjusted value in the same manner as the pie chart. In FIGS. 9A and 9B, the measured values and adjustment values of the pair of measuring points m1 and m5 facing each other are represented by a line graph, but the same applies to the other pair of measuring points facing each other. Create a line graph. In this line graph, the vertical axis indicates the longitudinal direction of the rotation axis 11, and the horizontal axis indicates the radial direction including a pair of measurement points facing each other. Therefore, the line graph of the measured values in FIG. 9A shows how the rotation axis 11 is eccentric in a vertical cross section including a pair of measurement points facing each other. Further, the line graph of the adjustment value in FIG. 9B shows how the rotation axis 11 should be adjusted in order to adjust the eccentricity of the rotation axis 11 in the vertical cross section including the pair of measurement points facing each other. There is.

The output unit 254 outputs data related to the report generated by the report generation unit 253. The output unit 254 causes the display unit 220 to display the report generated by the report generation unit 253, for example.
The above is the hardware configuration of the control device 200.

(Measured value acquisition process)
Hereinafter, the flow of the measured value acquisition process executed by the measuring device 100 and the control device 200 in cooperation with each other will be described with reference to the flowcharts of FIGS. 10A and 10B. In the measurement value acquisition process, when the control device 200 receives the instruction of the measurer, each measuring device 100 measures the shaft runout of the rotating shaft 11, and the control device 200 acquires the shaft runout measurement data from each measuring device 100. This is a process of storing the measured value in the measured value storage unit 241.

Before executing the measurement value acquisition process, the operator manually rotates the rotating shaft 11 of the water turbine generator 10. Specifically, for example, the rotary shaft 11 of the water turbine generator 10 is jacked up to form a sufficient oil film on the sliding surface between the fixed plate 15a and the rotary plate 15b of the thrust bearing 15. Then, about four workers simultaneously push the arms extending perpendicularly to the base end side of the rotating shaft 11 to rotate the rotating shaft 11 at a low speed. Once the rotating shaft 11 starts to rotate, the rotational inertia peculiar to a heavy object acts, so that even two workers can keep the rotation speed stable. When the rotation of the rotating shaft 11 becomes stable, the measurer activates the measuring device 100 and the control device 200, and starts the measured value acquisition process at an arbitrary timing.

The measurer observes the movement of the rotating shaft 11 during rotation, and when the marker M1 comes into contact with the contactor CN of the measuring device 100, the measurer presses the foot switch S of the control device 200. As shown in FIG. 10A, when the control unit 250 of the control device 200 receives the operation signal from the operation unit 210 (step S11), the control unit 250 measures the axial runout toward each measuring device 100. Is transmitted (step S12).

As shown in FIG. 10B, when the control unit 160 of the measuring device 100 receives the request from the control device 200 (step S21), the control unit 160 controls the measuring unit 130 to measure the instantaneous value of the shaft runout (step). S22). Next, the control unit 160 associates the measurement data with the identification information of the measurement points A to E stored in the storage unit 150 of each measuring device 100, controls the communication unit 140, and controls the measurement points A to E. The measurement data associated with the identification information is transmitted to the control device 200 in real time (step S23).

Returning to FIG. 10A, when the control unit 250 of the control device 200 receives the axis runout measurement data from each measurement device 100 (step S13), the axis runout measurement data received in step S13 is collected at each measurement point. It is stored in the measured value storage unit 241 in association with any of the identification information of A to E and the identification information of each measurement point m1 to m8 (step S14). The identification information of each measurement point m1 to m8 may be set according to the number of times of receiving the measurement data counted from the start time of the axial runout measurement.

Next, the control unit 250 determines whether or not the instruction to end the axial runout measurement by the measurer has been received (step S15). The timing of the end of the shaft runout measurement is at least the time when the shaft runout at all the measurement points m1 to m8 is measured. Since eight markers M1 to M8 are attached to the measurement points A to E of the rotating shaft 11, the measurer can sequentially measure the markers M2 to M8 while the rotating shaft 11 makes one rotation. The foot switch S is operated each time the contactor CN is touched. The timing of the end of the shaft runout measurement may be, for example, the time when the rotating shaft 11 is rotated within the range of 1 rotation to 5 rotations.

When it is determined that the instruction to end the measurement by the measurer has been accepted (step S15; Yes), the process is terminated. On the other hand, when it is determined that the instruction to end the measurement by the measurer is not accepted (step S15; No), the process is returned to step S11.
The above is the flow of the measured value acquisition process.

(Report generation process)
Hereinafter, the flow of the report generation process executed by the control device 200 will be described with reference to the flowchart of FIG. The report generation process is a process of generating a report based on the measured value of the shaft runout acquired in the measured value acquisition process of FIG. The report generation process is started, for example, when the measured value of the shaft runout is stored in the measured value storage unit 241 and the execution of the measured value acquisition process of FIG. 10 is completed.

First, the calculation unit 252 reads the measured value from the measured value storage unit 241 and adjusts the eccentricity at each measurement point m1 to m8 of the rotary shaft 11 for each measurement point A to E of the rotary shaft 11. Calculate the adjustment value (step S31).

Next, the report generation unit 253 generates a report in a predetermined format based on the measured value stored in the measured value storage unit 241 and the adjusted value calculated in the process of step S31 (step S32). Specifically, the report generation unit 253 includes a data table of FIG. 7, a pie chart shown in FIG. 8, and a line graph shown in FIG. 9 based on the measured values and adjusted values for one rotation of the rotating shaft 11. Generate a sheet. When the rotation shaft 11 is rotated n times from the start of the shaft runout measurement and the measurement data of the shaft runout is acquired, n sheets corresponding to each rotation are generated.

Next, the report generation unit 253 stores the data related to the report generated in step S32 in the report storage unit 242 (step S33).

Next, the output unit 254 outputs data related to the report generated in the process of step S32 (step S34). For example, the output unit 254 causes the display unit 220 to display the report generated in the process of step S32.
The above is the flow of the report generation process.

As described above, the runout measurement system 1 according to the embodiment includes a plurality of measuring devices 100 for measuring the runout width of the rotating shaft 11 at a plurality of measuring points A to E set on the rotating shaft 11. A control device 200 connected to each measuring device 100 so as to be communicable is provided.

Upon receiving the request from the control device 200, the measuring device 100 obtains the measuring unit 130 for measuring the axial runout of the rotating shaft 11 at each of the measurement points A to E and the measured axial runout of the rotating shaft 11. A communication unit 140 for transmitting to the control device 200 together with identification information unique to each measurement point A to E is provided.

The control device 200 has an operation unit 210 that receives an instruction to start measuring the shaft runout of the rotating shaft 11 by the measurer, and requests each measuring device 100 to measure the shaft runout when receiving the measurement start instruction from the measurer. The communication unit 230 that transmits the control signal of the above, and the acquisition unit 251 that acquires the measurement data of the shaft runout of the rotary shaft 11 transmitted from each measurement device 100 together with the identification information unique to each measurement point A to E. It is provided with a storage unit 240 that stores the measurement data of the axial runout of the rotating shaft 11 in association with the identification information unique to each measurement point A to E.

Therefore, by operating the operation unit 210 by one measuring person, measurements are taken at the same timing from a plurality of measuring devices 100 installed at each of the plurality of measuring points A to E set on the rotating shaft 11. It is possible to obtain measurement data of the shaft runout of the rotating shaft 11, and as a result, it is possible to accurately measure the shaft runout at each measurement point m1 to m8 at a plurality of measurement points A to E of the rotating shaft 11, and also for runout measurement. The required number of personnel can be significantly reduced.

The present invention is not limited to the above embodiment, and the modifications described below are also possible.

(Modification example)
In the above embodiment, the dial indicator is used as the measuring device 100, but the present invention is not limited to this. For example, another contact type displacement meter may be used as the measuring device 100, or a non-contact type displacement meter such as a laser displacement meter or an optical displacement meter may be used.

In the above embodiment, the measurer operates the foot switch S connected to the computer to instruct each measuring device 100 to measure the shaft runout, but the present invention is not limited to this. The operating means in which the measurer instructs each measuring device 100 to measure the shaft runout may be another means that the measurer can operate. For example, it may be a push button connected to a computer constituting the control device 200, or it may be a touch panel on a computer that can be operated by a measurer.

In the above embodiment, the identification information of each measurement point m1 to m8 is set based on the number of acquisitions of the measurement data, but the present invention is not limited to this. For example, the identification information of each measurement point m1 to m8 may be set based on the number of operations of the foot switch S by the measurer.

In the above embodiment, eight markers M1 to M8 are provided at each measurement point A to E of the rotating shaft 11, but the present invention is not limited to this. For example, the marker of the rotation axis 11 may be provided only at the measurement point where the measurer can enter. Further, the number of markers on the rotating shaft 11 is not limited to eight, and is set to an arbitrary number in consideration of the specifications of the generator and the like.

In the above embodiment, the contact CN and the markers M1 to M8 are arranged on the same circumference of the rotation axis 11, but the present invention is not limited to this. Markers M1 to M8 may be attached to any position on the rotation axis 11 as long as the user can determine the timing at which the positions (angles) of the markers M1 to M8 match the position of the tip of the contact CN. , May be attached on an attachment that is attached to the rotating shaft 11 and rotates integrally with the rotating shaft 11.

In the above embodiment, the measuring device 100 and the control device 200 are connected to each other so as to be communicable with each other via a wireless communication line, but the present invention is not limited to this. For example, the measuring device 100 and the control device 200 may be communicably connected to each other via a communication cable.

In the above embodiment, various data are stored in the storage units 140 and 240 of the measuring device 100 and the control device 200, but the present invention is not limited to this. For example, all or part of the various data may be stored in an external control device, a computer, or the like via a communication network.

In the above embodiment, the measuring device 100 and the control device 200 operate based on the programs stored in the storage units 140 and 240, respectively, but the present invention is not limited thereto. For example, the functional configuration realized by the program may be realized by hardware.

In the above embodiment, the measuring device 100 and the control device 200 are, for example, general-purpose computers, but the present invention is not limited thereto. For example, the measuring device 100 and the control device 200 may be realized by a computer provided on the cloud.

In the above embodiment, the process executed by the measuring device 100 and the control device 200 is realized by the device having the above-mentioned physical configuration executing the program stored in the storage units 140 and 240. The present invention may be realized as a program, or may be realized as a storage medium in which the program is recorded.

Further, the program for executing the above-mentioned processing operation can be read by a computer such as a flexible disk, a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), or an MO (Magneto-Optical Disk). A device that executes the above-mentioned processing operation may be configured by storing it in a non-temporary recording medium, distributing it, and installing the program on a computer.

In the above embodiment, the runout measurement system 1 has been applied to a vertical turbine generator, but the present invention is not limited to this. For example, the runout measurement system 1 may be applied to a vertical shaft machine other than a vertical shaft water turbine generator, or may be applied to a horizontal shaft machine such as a generator of a thermal power plant or a ship turbine.

The above embodiments are examples, and the present invention is not limited thereto, and various embodiments are possible without departing from the spirit of the invention described in the claims. The components described in each embodiment and modification can be freely combined. The present invention also includes inventions equivalent to those described in the claims.

1 Runout measurement system 11 Rotating axis 100 Measuring device 130 Measuring unit 140 Communication unit 160 Control unit 200 Control device 210 Operation unit 230 Communication unit 240 Storage unit 250 Control unit 251 Acquisition unit 252 Calculation unit 253 Report generation unit

The present invention relates to a runout measurement system for a rotating shaft , a control device, and a runout measurement method.

The present invention has been made based on such a background, and an object of the present invention is to provide a runout measurement system , a control device, and a runout measurement method for a rotating shaft capable of accurately measuring the shaft runout of the rotating shaft. And.

In order to achieve the above object, the runout measurement system according to the present invention is
It is a runout measurement system including a plurality of measuring devices for measuring the swing width of the rotating shaft at a plurality of measurement points set on the rotating shaft, and a control device communicatively connected to each measuring device. ,
Each measuring device
Upon receiving the request from the control device, the measuring unit for measuring the shaft runout of the rotating shaft at each measurement point, and the measuring unit.
A communication unit that transmits the measured axial runout measurement data of the rotating shaft to the control device together with identification information unique to each measurement point is provided.
The control device is
An operation unit that receives an instruction from the user to start measuring the shaft runout of the rotating shaft, and
When receiving an instruction to start measurement from the user, a communication unit that sends a control signal to request each measuring device to measure shaft runout, and a communication unit.
An acquisition unit that acquires measurement data of the shaft runout of the rotating shaft transmitted from each measuring device together with identification information unique to each measurement point, and an acquisition unit.
A report generation unit that generates a report that reports the result of the runout measurement to the user based on the measured value of the shaft runout of the rotating shaft for each measuring device acquired by the acquisition unit is provided.
The report generation unit is positioned in the longitudinal direction of the rotation axis at each measurement point of the rotation axis at each pair of measurement points set so as to face each other on the same circumference of the outer peripheral surface of the rotation axis. Is a vertical axis, and a line graph is generated with the measured value of the swing width of the rotation axis as the horizontal axis .

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a runout measurement system , a control device, and a runout measurement method for a rotating shaft capable of accurately measuring the shaft runout of the rotating shaft.

Claims (10)

It is a runout measurement system including a plurality of measuring devices for measuring the swing width of the rotating shaft at a plurality of measurement points set on the rotating shaft, and a control device communicatively connected to each measuring device. ,
Each measuring device
Upon receiving the request from the control device, the measuring unit for measuring the shaft runout of the rotating shaft at each measurement point, and the measuring unit.
A communication unit that transmits the measured axial runout measurement data of the rotating shaft to the control device together with identification information unique to each measurement point is provided.
The control device is
An operation unit that receives an instruction from the user to start measuring the shaft runout of the rotating shaft, and
When receiving an instruction to start measurement from the user, a communication unit that sends a control signal to request each measuring device to measure shaft runout, and a communication unit.
An acquisition unit that acquires measurement data of the shaft runout of the rotating shaft transmitted from each measuring device together with identification information unique to each measurement point, and an acquisition unit.
It is provided with a storage unit that stores the acquired measurement data of the shaft runout of the rotating shaft in association with the identification information unique to each measurement point.
Runout measurement system. The rotation axis includes a plurality of markers provided at equal intervals in the circumferential direction on the same circumference of the outer peripheral surface of the rotation axis.
In the measuring device, the tip surface is in contact with the outer peripheral surface of the rotating shaft, and when the rotating shaft is rotating, the contactor is displaced according to the position of the outer peripheral surface of the rotating shaft, and the displacement of the contactor. Equipped with an encoder that reads and outputs displacement data of the contact.
The runout measurement system according to claim 1. A plurality of measurement points provided at equal intervals in the circumferential direction on the same circumference of the outer peripheral surface of the rotation shaft are set on the rotation shaft at each measurement point, and each measurement point is provided on the rotation shaft. It is set to the same position in the circumferential direction as each marker,
The acquisition unit of the control device associates identification information unique to the measurement point with the measurement data of the shaft runout of the rotating shaft acquired from each measuring device.
The storage unit stores the acquired measurement data of the shaft runout of the rotating shaft in association with the identification information peculiar to the measurement point and the identification information peculiar to the measurement point.
The runout measurement system according to claim 2. The control device obtains an adjustment value which is a radial displacement amount of the rotary shaft necessary for adjusting the eccentricity of the rotary shaft based on the measured value of the shaft runout of the rotary shaft acquired from each measuring device. Further equipped with a calculation unit for calculation
The runout measurement system according to any one of claims 1 to 3. A report that generates a report that reports the result of runout measurement to the user based on the measured value of the shaft runout of the rotating shaft acquired from each measuring device and the adjusted value of the rotating shaft calculated by the calculation unit. Further equipped with a call generator,
The runout measurement system according to claim 4. The operation unit of the control device is a foot switch that can be operated by the user by stepping on it.
The runout measurement system according to any one of claims 1 to 5. The rotating shaft comprises a turbine shaft constituting a vertical turbine generator that converts water energy into electricity, and a rotor of the generator connected to the turbine via a coupling.
The runout measurement system according to any one of claims 1 to 6. A measuring device that measures the swing width of the rotating shaft at a measurement point set on the rotating shaft.
Upon receiving a request from a control device connected so as to be communicable, a measuring unit that measures the shaft runout of the rotating shaft at the measuring point and a measuring unit.
A communication unit that transmits the measured axial runout measurement data of the rotating shaft to the control device together with identification information unique to the measurement point.
A measuring device equipped with. A control device communicably connected to a plurality of measuring devices for measuring the swing width of the rotating shaft at a plurality of measurement points set on the rotating shaft.
An operation unit that receives an instruction from the user to start measuring the shaft runout of the rotating shaft, and
When receiving an instruction to start measurement from the user, a communication unit that sends a control signal to request each measuring device to measure shaft runout, and a communication unit.
An acquisition unit that acquires measurement data of the shaft runout of the rotating shaft transmitted from each measuring device together with identification information unique to each measurement point, and an acquisition unit.
A storage unit that stores the acquired measurement data of the shaft runout of the rotating shaft in association with the identification information unique to each measurement point.
A control device equipped with. It is a runout measurement method executed by a plurality of measuring devices for measuring the swing width of the rotating shaft at a plurality of measurement points set on the rotating shaft, and a control device communicatively connected to each measuring device. hand,
The step in which the control device receives an instruction from the user to start measuring the shaft runout of the rotating shaft, and
When the control device receives a measurement start instruction from the user, a step of transmitting a control signal to request each measurement device to measure the shaft runout, and a step of transmitting the control signal.
When each measuring device receives a request from the control device, a step of measuring the shaft runout of the rotating shaft at each measuring point and a step of measuring the shaft runout.
A step in which each measuring device transmits the measured measurement data of the shaft runout of the rotating shaft to the control device together with identification information unique to each measurement point.
A step in which the control device acquires measurement data of the shaft runout of the rotating shaft transmitted from each measuring device together with identification information unique to each measurement point.
The control device includes a step of storing the acquired measurement data of the shaft runout of the rotating shaft in association with the identification information unique to each measurement point.
Runout measurement method.

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