Coupling shaft alignment measuring device and rotating machine installation adjustment method using the same

Abstract

To facilitate the work of checking the shaft core adjustment state of a coupling section and to perform shaft core adjustment simply and accurately when installing rotating machines such as large vertical shaft pumps, horizontal shaft pumps, and hydraulic generators.SOLUTION: A device for measuring the shaft core adjustment state between a pair of coupling sections connecting a drive-side shaft and a driven-side shaft of a rotating machine comprises: a plurality of digital dial gauges fixed to one of the coupling sections and capable of bringing measuring elements into contact with the other coupling section; a computer that collects measurement data from the digital dial gauges; and a monitor that displays the measurement data from the digital dial gauges via the computer.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a shaft alignment measuring device that measures the shaft alignment state of couplings installed between motors and pumps, between water turbines and generators, between motors and various machines such as reducers or dehydrators, in order to install rotating machines such as pumping and drainage pumps, generators, and prime movers that are installed in pumping and drainage facilities and various other equipment and facilities, and to an installation adjustment method for rotating machines using the same. [Background technology]

[0002] Conventionally, when installing hydraulic machinery such as vertical pumps on foundations in various facilities such as pumping and drainage facilities, sewage treatment facilities, factories, and drainage facilities, for example, when installing the pump and its motor, the pump is usually installed on a base plate seat built on the foundation, the motor is installed on the floor above, and the pump's rotating shaft and the motor's drive shaft are connected via a coupling. In this case, it is necessary to accurately align the axis between the pump's rotating shaft and the motor's drive shaft.

[0003] Patent Document 1 discloses a method for measuring an axis alignment jig for a coupling portion between a motor of a rotating machine and a rotating body such as a pump. In this measurement method, the coupling portion on the motor side and the coupling portion on the pump side are aligned opposite each other, the dial gauge is fixed to the bolt by screwing the male thread at the end of the dial gauge into the female thread cut into the head of the bolt, and the bolt is then fixed to the coupling portion on the motor side. The method describes that the probe of the dial gauge is then brought into contact with the coupling portion on the pump side, and the axis alignment work is performed by reading changes in the dial gauge scale while rotating the coupling portion on the motor side.

[0004] However, this type of axis alignment work is carried out on temporary scaffolding, and the value of the dial gauge fixed to the coupling part must be visually confirmed, which becomes unsafe when the pump or motor is large. In particular, in a water treatment facility where the pump is installed on the lower floor and the motor on the upper floor, in order to check the dial gauge on the coupling part located between the upper and lower floors, scaffolding must be set up and the checking work must be carried out on that scaffolding, which creates safety concerns.

[0005] Furthermore, it is necessary to read the dial gauge measurement values ​​at multiple points around the circumference by rotating one of the coupling parts and moving the measuring point, which may require an awkward posture on the scaffolding, making it not only unstable and cumbersome work, but also making it difficult to accurately confirm the measurement values, which can easily lead to a decrease in the accuracy of the measurement work.

[0006] Patent Document 2 discloses that in the shaft alignment work of large rotating equipment such as turbines, the tip of the rod of a hydraulic cylinder is hooked onto the bolt of the coupling part and the hydraulic cylinder is driven to rotate the coupling part by a predetermined angle, and it is stated that by using this method for shaft alignment work, it is possible to reduce time and perform the work accurately. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-122406 [Patent Document 2] Japanese Utility Model Application Publication No. 4-32882 Summary of the Invention [Problem to be solved by the invention]

[0008] However, Patent Document 2 only rotates the coupling portion, and does not disclose how to check the state of the shaft alignment, including the inclination of the coupling portion. For this reason, there is a demand for the development of an axis alignment measuring device that can easily check the axis alignment state of the coupling part and perform accurate axis alignment at work sites, particularly when installing large-diameter pumps, etc.

[0009] The present invention has been made in view of the above circumstances, and aims to make it easier to check the shaft alignment status of the coupling when installing rotating machinery such as large vertical pumps for lifting and discharging, hydroelectric generators, etc., and to perform simple and accurate shaft alignment. [Means for solving the problem]

[0010] The coupling alignment measuring device of the present invention is a device for measuring the state of alignment between a pair of couplings that connect the drive shaft and driven shaft of a rotating machine, and includes a plurality of digital dial gauges that are fixed to one of the couplings and whose measuring probes can be brought into contact with the other of the couplings, a computer that collects the measurement data of these digital dial gauges, and a monitor on which the measurement data of the digital dial gauges is displayed by the computer.

[0011] With each digital dial gauge fixed to one of the coupling parts by magnetism or a clamp, etc., the probe is brought into contact with the other coupling part, and the measurement data is collected by a computer and then displayed on a monitor, allowing the state of alignment, including the tilt of the coupling parts, to be checked via the monitor without having to directly check the digital dial gauges on the coupling parts. Since there is no need to directly check the dial gauges, the task of checking the alignment state is simplified, and even in the case of large rotating machinery, accurate alignment can be performed while visually checking the alignment state of the coupling parts on the monitor. Examples of combinations of a drive-side device and a driven-side device of a rotary machine include a motor and a pump, a water turbine and a generator, a prime mover and a reducer, and the like.

[0012] In the coupling alignment measuring device of the present invention, at least one digital dial gauge is preferably provided for measuring the distance between the shaft end faces of the coupling part and for measuring the outer peripheral surface.

[0013] In the coupling axis alignment measuring device of the present invention, the computer may display the measurement data of each of the plurality of digital dial gauges on the monitor. By checking the monitor, the measurement data of each digital dial gauge can be grasped, making it easier to check the axis alignment status.

[0014] In the coupling alignment measuring device of the present invention, the computer may have a function of displaying a warning on the monitor when the deviation of the coupling axis exceeds a predetermined reference value.

[0015] When reading the shaft alignment numerically, a warning display prevents workers from misreading the measurement value and allows them to accurately check the shaft alignment. Also, by checking the warning display while working, workers can easily check the adjustment and perform the measurement and adjustment work accurately and reliably.

[0016] In the coupling portion axis alignment measuring device of the present invention, it is preferable that the monitor is provided with a plurality of measurement data display sections for displaying the measurement value data, the display sections corresponding to a plurality of locations in the circumferential direction of the shaft. By using a digital dial gauge to measure the circumferential direction of the shaft at 90° intervals (90° intervals circumferentially for a vertical axis, and 90° intervals up, down, left, and right for a horizontal axis), and displaying the measurement data for each 90° on the measurement data display section of the monitor, it is possible to grasp measurement data from multiple locations (four locations) at once, making the work more accurate and easier. It is advisable to use data measured at four locations in the direction of the horizontal water flow in the rotating machine and in a direction perpendicular to this water flow direction.

[0017] This allows for adjustment of the shaft alignment in four directions based on the water flow direction, enabling highly accurate measurement of the coupling. As a result, when installing a rotating machine, it can be installed with high accuracy based on the water flow direction.

[0018] In the coupling alignment measuring device of the present invention, it is preferable that the digital dial gauge has a communication function for wirelessly transmitting measurement data to the computer.

[0019] By wirelessly transmitting the measurement data from the digital dial gauge to a computer via the communication function, there is no need to run connecting cables, making work easier and safer.

[0020] The method for installing and adjusting a rotating machine using the coupling axis adjustment measurement device of the present invention involves, when installing the drive side device and the driven side device of the rotating machine, fixing a plurality of digital dial gauges to one side of the coupling device that connects the shafts of the drive side device and the driven side device, and bringing the measuring probes of the digital dial gauges into contact with the other side of the coupling device, collecting measurement data from these digital dial gauges in a computer, and adjusting the axis of the coupling device while displaying the collected measurement data on a monitor, and installing the drive side device and the driven side device of the rotating machine.

[0021] According to this method for installing and adjusting rotating machinery, a digital dial gauge fixed to the coupling section is placed in a designated position, and the axis alignment status of the coupling section can be checked through a monitor. Therefore, with large rotating machinery, no awkward posture is required on the scaffolding, and the axis alignment status can be easily checked through the monitor, allowing for accurate axis alignment. [Effects of the Invention]

[0022] According to the present invention, the axial alignment status of the coupling part can be easily checked, so that the rotating machine can be installed with high precision, and the rotating machine can be accurately attached to the base plate, allowing the functionality of the rotating machine to be fully utilized. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a schematic diagram showing the installation state of a vertical pump and a motor. [Figure 2] FIG. [Figure 3] FIG. 2 is a plan view showing a base plate receiving seat on which a base plate of a motor (drive mechanism) is installed, and a stand for fixing the base plate receiving seat. [Figure 4] 4 is an enlarged vertical cross-sectional view of an adjusting screw jack provided on the stand of FIG. 3. FIG. [Figure 5] FIG. 1 is a schematic diagram showing an example of a planar arrangement of a digital dial gauge. [Figure 6] FIG. 10 is a diagram illustrating an example of a display on a monitor. [Figure 7] FIG. 10 is a diagram showing another example of a display on the monitor. DETAILED DESCRIPTION OF THE INVENTION

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a coupling portion axis alignment measuring device and a rotary machine installation adjustment method using the same according to the present invention will be described with reference to the drawings. In this embodiment, an example is shown in which a motor is used as the driving device of the rotary machine and a vertical shaft axial flow pump (hereinafter simply referred to as a pump) is used as the driven device.

[0025] (Structure of coupling axis alignment measuring device) The coupling alignment measuring device 10 in this embodiment (hereinafter simply referred to as the axis alignment measuring device) is a device used to measure the state of axis alignment of a coupling 15 that connects an output shaft (drive shaft) 13 of the motor 11 with a rotating shaft (driven shaft) 14 of the pump 12 when installing the motor 11 and the pump 12 connected to the motor 11, and as shown in Figures 2 and 5, is equipped with a device consisting of two digital dial gauges 44A, 44B, a computer 17, and a monitor 18. Alignment in this case includes adjusting the tilt of the axes between the two axes 13, 14, and any horizontal deviation perpendicular to the axes 13, 14.

[0026] The foundation on which the motor 11 and pump 12 are installed consists of two floors, an upper floor and a lower floor, with the pump 12 installed on foundation (concrete) 21 on the lower floor and the motor 11 installed on foundation (concrete) 22 on the upper floor. The output shaft 13 of the motor 11 on the upper floor extends vertically downward through the foundation 22 on the upper floor, and the rotating shaft 14 of the pump 12 on the lower floor is positioned facing vertically upward, with the output shaft 13 and rotating shaft 14 connected by a coupling part 15.

[0027] In this example, an opening 23 having a diameter of approximately φ1500 mm is formed in the foundation 21 of the lower floor on which the pump 12 is installed. The pump 12 has a pump body 25, such as a vertical pump, which is equipped with a suction pipe 26 extending vertically downward and a discharge pipe 27 extending horizontally. The suction pipe 26 extends from the opening 23 downward below the foundation 21, the pump body 25 is disposed on the foundation 21, and the discharge pipe 27 is disposed horizontally above the foundation 21. An opening hole 28 is also formed in the foundation 22 of the upper floor on which the motor 11 is installed, and the output shaft 13 of the motor 11 extends downward through this opening hole 28.

[0028] In this case, the pump 12 is mounted such that a base plate 62 of the pump 12 is placed on a base plate support seat 61 fixed horizontally on the foundation 21. On the other hand, the motor 11 is mounted such that an annular base plate support seat 66 is fixed to a frame 63 fixed horizontally on the foundation 22, and a base plate 64 of the motor 11 is placed on the base plate support seat 66. As shown in Figure 3, this frame 63 is made up of multiple beam members 65 assembled vertically and horizontally, with the annular base plate support seat 66 fixed integrally to the center. Reference numeral 67 denotes a fixing hole through which an anchor bolt (not shown) of the foundation 22 is inserted.

[0029] Additionally, adjustment jack screws 68 are provided around the periphery of the base plate support seat 66 for finely adjusting the horizontal position of the base plate 64, which is fixed and placed on the base plate support seat 66. As shown enlarged in FIG. 4 , these adjustment jack screws 68 have a structure in which male screws 70 are held horizontally inward in the radial direction of the base plate support seat 66 on blocks 69 erected on the outside of the base plate support seat 66, and four adjustment jack screws 68 are provided at 90° intervals around the circumferential direction. By abutting the tips of the male screws 70 against the outer peripheral surface of the base plate 64 on the base plate support seat 66 and pressing them in, the base plate 64 can be moved horizontally on the base plate support seat 66 as indicated by the arrow. By providing the four adjustment jack screws 68 at 90° intervals around the circumferential direction, it is possible to move the base plate 64 in any horizontal direction and finely adjust it toward the center by combining these four adjustment jack screws 68.

[0030] 2 shows an enlarged view of a coupling 15 that connects the output shaft 13 of the motor 11 and the rotating shaft 14 of the pump 12. A shaft alignment measuring device 10 is provided for adjusting the shaft alignment of this coupling 15. The axis alignment measuring device 10 has two digital dial gauges 44A, 44B, a computer 17 that collects measurement data from these digital dial gauges 44A, 44B, and a monitor 18 on which the measurement data from the digital dial gauges 44A, 44B is displayed by the computer 17.

[0031] The digital dial gauges 44A, 44B include a magnetic stand 41, a support 42, an arm 43, etc. The magnetic stand 41 is a magnetic type that can be fixed to an attachment location by magnetic force, and is formed in the shape of a cubic or rectangular parallelepiped block. The support 42 is fixed horizontally to the magnetic stand 41, and an arm 43 is attached to the tip of the support 42 so that it can be finely adjusted, and the digital dial gauges 44A, 44B are supported on the tip of the arm 43 so that they can be finely adjusted.

[0032] The digital dial gauges 44A, 44B are digital and have the function of converting the movement of the contact point 45 at the tip into digital data. The digital dial gauges 44A, 44B also have a wireless communication function with the computer 17 (see FIG. 5), and measurement data is sent to the computer 17 via this communication function. Because this communication function is wireless, there is no need to run cables as with wired systems, and it is possible to check the axis alignment status from a greater distance than with wired systems. Examples of wireless communication include WiFi and Bluetooth (registered trademark).

[0033] As shown in Figure 2, etc., these digital dial gauges 44A, 44B have a dial gauge 44A for measuring the distance between shaft end faces to measure the opposing surfaces from one coupling part 15A to the other coupling part 15B, and a dial gauge 44B for measuring the outer peripheral surface to measure the outer peripheral surface from one coupling part 15A to the other coupling part 15B.

[0034] In this case, the dial gauge 44A for measuring the distance between shaft end faces has a lever-type probe 45A so that the opposing surface can be measured from the outside of the coupling part, and the probe 45A is placed on the opposing surface at a nearly right angle (with the contact angle as small as possible) for measurement. A spindle-type dial gauge may also be used. On the other hand, the dial gauge 44B for measuring the outer circumferential surface has a measuring element 45B of a spindle type, which is applied to the outer circumferential surface of the coupling part at a right angle toward the center of the rotation axis to perform measurement.

[0035] The computer 17 displays the measurement data sent from the digital dial gauges 44A, 44B on the monitor 18, and has the function of displaying a warning on the monitor 18 when the measurement data is greater than a predetermined reference value. The monitor 18 is connected to the computer 17, and displays the measurement data of the digital dial gauges 44A, 44B output from the computer 17. In the example shown in Figure 5, the computer 17 is configured as a laptop computer with the monitor 18 attached.

[0036] Figure 6 shows an example of the display on monitor 18, in which the circles schematically represent the outer peripheries of couplings 15A and 15B, and the white arrow in the center indicates the direction of water flow in pump 12. As will be described later, digital dial gauges 44A and 44B measure the state of shaft alignment at 90° intervals around the circumference of couplings 15A and 15B, and measurement data display units 51 are arranged at 90° intervals around the circumference. For this reason, as in Figure 2, the reference numerals 51 are distinguished by adding an A for the shaft end face measurement and a B for the outer periphery measurement.

[0037] In other words, the measurement data display section indicated by 1 to 4 of the symbol 51A displays the measurement data sent from the digital dial gauge 44A for measuring the distance between the shaft end faces, and the measurement data display section indicated by 1 to 4 of the symbol 51B displays the measurement data sent from the digital dial gauge 44B for measuring the outer peripheral surface.

[0038] 2, digital dial gauges 44A, 44B are provided on coupling 15A on the output shaft 13 side of motor 11, and measurements are taken while rotating coupling 15A or both couplings 15A, 15B with probes 45A, 45B in contact with coupling 15B on the rotating shaft 14 side of pump 12. The first measurement data is displayed at position 1 on displays 51A, 51B of monitor 18, and thereafter, measurement data is displayed sequentially on displays 2 to 4 on displays 51A and 51B of monitor 18 as coupling 15A is rotated clockwise.

[0039] In this case, the error within the reference value of the motor 11 may be adjusted each time measurements are taken with the digital dial gauges 44A, 44B, but since the coupling part 15A can be rotated once in 90° intervals to return to the initial position, by checking the numbers 1 to 4 on the display parts 51A and 51B on the monitor 18 in this state, it is possible to know in which direction the adjustment should be made, making it easier to check the state of the axis adjustment.

[0040] Additionally, a warning display section 52 is formed in a frame shape surrounding each measurement data display section 51, and when the measurement data exceeds a reference value, a warning is issued by, for example, displaying red in the warning display section 52. This warning display section 52 displays red when the measurement data exceeds the reference value, but it may also be configured to change color in multiple stages depending on the size of the measurement data.

[0041] The standard for this measurement data can be changed as appropriate by the computer 17 depending on the sizes of the motor 11 and pump 12, the size of the coupling unit 15, etc. In addition to the warning display unit 52, a function to issue a warning sound may be provided.

[0042] Misalignment can be classified into parallel eccentricity, where the axes are misaligned, angular misalignment, and a combination of these. In this embodiment, a warning is displayed when any of the misalignments reaches 5 / 100 (0.05) mm or more.

[0043] In this embodiment, a vertical shaft pump has been described as an example of the pump, but the pump may be a pump other than a vertical shaft pump, such as a horizontal shaft pump. In the case of a horizontal shaft pump, the motor output shaft and the pump rotation shaft are arranged horizontally and connected by a coupling. The measuring device of the present invention is then used to adjust the inclination of the shaft and any misalignment in the vertical direction perpendicular to the shaft.

[0044] (Motor and pump installation and adjustment method) Next, a method for installing and adjusting the motor 11 and the pump 12 using the axis alignment measuring device 10 will be described. The pump 12 is installed horizontally on the foundation 22 while aligning with the opening hole 23 in the foundation 22 of the lower floor, and the suction pipe 26 and discharge pipe 27 are connected. Meanwhile, the motor 11 is placed on the foundation 21 of the upper floor and installed horizontally, and then the output shaft 13 of the motor 11 and the rotating shaft 14 of the pump 12 are connected by the coupling part 15.

[0045] When connecting the output shaft 13 and the rotary shaft 14 by this coupling unit 15, as shown in Fig. 2, a magnetic stand 41 is fixed to, for example, the upper surface of one coupling unit 15A, and the measuring probes 45A and 45B of the digital dial gauges 44A and 44B are brought into contact with the shaft end face and the circumferential surface of the other coupling unit 15B. In this case, as described above, the measuring probes 45A and 45B of both digital dial gauges 44A and 44B are placed so that they come into contact with each other, based on the direction in which the discharge pipe 27 of the pump 12 extends. As shown in FIG. 2, the two digital dial gauges 44A, 44B are fixed only to one of the coupling parts 15A, and the measuring probes 45A, 45B are brought into contact with the other coupling part 15B, and measurements are taken at 90° intervals while rotating the coupling part 15A or both coupling parts 15A, 15B in the circumferential direction.

[0046] The measurement data of both digital dial gauges 44A, 44B is collected and stored in computer 17, and after being processed, is displayed on monitor 18. The worker visually checks this monitor 18 to confirm the state of axis alignment numerically, while adjusting the state of axis alignment of coupling parts 15A, 15B.

[0047] The monitor 18 displays all measurement data for four locations around the circumference, two at each location (eight locations in total), so the worker can simultaneously check the alignment status of the coupling parts 15A and 15B on the single screen of the monitor 18, facilitating the measurement of the alignment status and checking this measurement data, and ensuring accurate alignment (centering) work.

[0048] This axial alignment can be performed by moving the base plate 64 toward the horizontal center using one or more of the four adjustment screw jacks 68 on the base plate support 66 on the stand 63 on which the base plate 64 of the motor 11 is placed. If the coupling portions 15A and 15B are tilted, this can be adjusted by inserting spacers or shim / liner materials (not shown) into appropriate locations around the circumference of the base plate 64 and stand 63. Then, after adjusting the eight measurement data so that they fall within the reference values, the base plate 64 of the motor 11 is fixed to the base plate receiving seat 66, and after checking the rotation direction of the motor 11, the coupling parts 15A and 15B are connected.

[0049] As described above, in this installation and adjustment method, two digital dial gauges 44A, 44B are fixed to one of the couplings 15A, 15B, and the probes 45A, 45B are brought into contact with the other coupling. The measurement data is collected by the computer 17 and then displayed on the monitor 18. This procedure is performed at four locations while rotating one or both couplings 15A, 15B circumferentially by 90°. This allows the status of the axis alignment, including the tilt of the couplings 15A, 15B, to be checked via the monitor 18 without directly checking the digital dial gauges 44A, 44B of the couplings 15A, 15B. This facilitates the task of checking the axis alignment status, and even in cases where the pump 12 is large, accurate axis alignment can be achieved by simultaneously checking and adjusting the tilt in each direction and the misalignment of the axes while visually checking the axis alignment status of the couplings 15A, 15B on the monitor 18.

[0050] In this case, by measuring in four directions based on the flow path direction of the discharge port of pump 12, it becomes possible to adjust the axis in four directions, making it possible to measure coupling parts 15A and 15B with high precision, and allowing pumps to be adjusted and installed with high precision based on the direction of the discharge port. In addition, a warning is displayed when the measurement data of the digital dial gauges 44A, 44B exceeds the reference value, so visual confirmation can be performed more easily and reliably, making the confirmation work easier and allowing the work from measurement to adjustment to be performed safely.

[0051] As described above, the specific configuration of the present invention is not limited to the above-described embodiment, and design changes and the like are possible within the scope of the gist of the present invention. Although a magnetic stand was used to fix the digital dial gauge to the coupling part, it may also be fixed by a clamp or the like in addition to magnetic fixation. Furthermore, although the embodiment shows a combination of a vertical pump and its motor, it is of course also applicable to a case where a horizontal pump and a motor are connected via a coupling portion. Furthermore, the present invention can be applied not only to pumps and motors, but also to other rotating machines, such as hydroelectric generators consisting of a water turbine and a generator. In the case of a hydroelectric generator, for example, the water turbine is installed on the lower foundation 21 in Figure 1, and the generator is installed on the upper foundation 22. The water turbine is the driving device, and the generator is the driven device. Then, the water turbine is fixed to the lower foundation 21, and the base plate of the generator is placed on the frame of the upper foundation 22. With this temporarily fixed, the shaft alignment work is performed as described above on the coupling that connects the water turbine shaft and the generator shaft, and then the generator is permanently fixed and the coupling is fixed. Rotating machinery is not limited to those driven by hydraulic power. The technology can be applied to equipment with prime movers that are driven by various types of energy, such as engines and electric motors. For example, the technology can be widely applied to axial alignment in the coupling that connects the drive shaft and the driven shaft in various machines, such as between a prime mover and a reducer.

[0052] Furthermore, the monitor screen is not limited to the example shown in FIG. 6 and may be configured as shown in FIG. 7, for example. The monitor 60 shown in FIG. 7 displays digital dial gauge measurement values ​​in two rows, one above the other, at 90° intervals around a circle representing the coupling portion. In both cases, A to D in the lower row represent outer peripheral surface measurement data, and E to H in the upper row represent shaft-to-end measurement data. For example, the outer peripheral surface measurement data is displayed in orange, and the shaft-to-end measurement data is displayed in green. If the measurement data deviates from the reference value, the displayed value may turn red. In FIG. 7, reference numeral 61 denotes a button for various settings, reference numeral 62 denotes a button for starting and stopping measurement, and reference numeral 63 denotes a button for saving the displayed data, all of which are touch-sensitive switches. [Explanation of symbols]

[0053] 10 Axis alignment measuring device 11 Motor (hydraulic machinery: driving equipment) 12 Pump (Hydromachinery: Driven equipment) 13 Output shaft (drive shaft) 14 Rotating shaft (driven shaft) 15, 15A, 15B coupling part 17. Computers 18 monitors 26 Suction pipe 27 Discharge pipe 41 Magnetic Stand 42 Post 43 Arm 44A, 44B Digital Dial Gauge 45A, 45B probe 51, 51A, 51B Measurement data display section 52 Warning display section 60 monitors

Claims

1. An apparatus for measuring the state of alignment between a pair of coupling parts that connect a drive shaft and a driven shaft of a rotary machine, the apparatus comprising: a plurality of digital dial gauges that are fixed to one of the coupling parts and whose measuring probes can be brought into contact with the other of the coupling parts; a computer that collects measurement data of the digital dial gauges; and a monitor that displays the measurement data of the digital dial gauges by the computer. The driving side is a motor or a water turbine, and the driven side is a vertical pump for the motor or a generator for the water turbine, and the water flow direction is perpendicular to the axis of the vertical pump or the axis of the water turbine, The coupling part axis alignment measuring device is characterized in that the monitor is provided with an arrow indicating the water flow direction and data display units arranged at 90° intervals around the circumference.

2. 2. The coupling portion axis alignment measuring device according to claim 1, wherein at least one digital dial gauge is provided for measuring the distance between the shaft end faces of the coupling portion and for measuring the outer peripheral surface of the coupling portion.

3. 2. The coupling portion axis alignment measuring device according to claim 1, wherein the computer displays the measurement data of each of the plurality of digital dial gauges on the monitor.

4. 2. The coupling part axis alignment measuring device according to claim 1, wherein the computer has a function of displaying a warning on the monitor when the tilt or deviation of the axis of the coupling part is greater than a predetermined reference value.

5. 2. The coupling alignment measuring device according to claim 1, wherein the digital dial gauge has a communication function for wirelessly transmitting measurement data to the computer.

6. 2. The coupling portion alignment measuring device according to claim 1, wherein the monitor is provided with a plurality of measurement data display sections for displaying the measurement data, a plurality of sections for displaying the measurement data between the shaft end faces and on the outer peripheral surface, corresponding to measurement locations in the outer peripheral direction of the shaft.

7. When installing a drive-side device and a driven-side device of a rotary machine, a plurality of digital dial gauges are fixed to one of the coupling parts connecting the shafts of the drive-side device and the driven-side device, and the contact points of the digital dial gauges are brought into contact with the other of the coupling parts, measurement data of these digital dial gauges is collected in a computer, and the collected measurement data is displayed on a monitor while adjusting the axial centers of the coupling parts, thereby installing the drive-side device and the driven-side device, The driving device is a motor or a water turbine, and the driven device is a vertical pump for the motor or a generator for the water turbine, and the water flow direction is perpendicular to the axis of the vertical pump or the axis of the water turbine, Measurements are taken at four positions at 90° intervals based on the water flow direction. A method for installing and adjusting a rotating machine, comprising:

8. 8. The method for installing and adjusting a rotary machine according to claim 7, wherein the monitor displays measurement data measured at positions in the four directions together with arrows indicating the water flow direction.

9. The method for installing and adjusting a rotating machine according to claim 7, wherein the digital dial gauge has a communication function for wirelessly transmitting measurement data to the computer, and measurements are performed while rotating both of the coupling parts.

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