JP2018066347A - Measurement system for turbine, positioning system and positioning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turbine measurement system with which an administrative operator can exactly grasp positional information of a turbine component such as a turbine casing and a rotor.SOLUTION: In a turbine measurement system, a plurality of position sensors 10 are dispersedly arranged in a turbine 9 to detect a position of a measurement point p on a turbine component 9a. Sensor information processing means 20 transmits detected positional information of each position sensor 10 together with sensor identification information as transmission information. Display processing means 30 receives the transmission information to display a turbine image 33d where the positional information of each measurement point p is reflected to image data 32d of the turbine 9.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a system for measuring the position of components such as a turbine casing and a rotor of a turbine, a positioning system, and a positioning method, and more particularly, to a system and method suitable for a large turbine for commercial power generation.

Accurate centering of the turbine casing and rotor in the turbine is important for improving turbine efficiency and the like. For example, a turbine for commercial power generation has a shaft length ranging from several meters to several tens of meters, so that centering is a cooperative work of a plurality of workers. The conventional centering operation is performed, for example, by the following procedure.
Dial gauges (dial gauges) and hydraulic jacks are installed at various locations in the axial direction and circumferential direction of the turbine component to be centered. An operator is assigned to each dial gauge and each hydraulic jack. Each operator in charge of the dial gauge transmits the measured value to the field supervisor with a radio such as a transceiver or loudly. The on-site supervisor instructs each worker in charge of the hydraulic jack based on the information on the operation amount by radio or loud. Each worker in charge of the hydraulic jack operates the hydraulic jack based on the instructions.

JP 2012-149523 A

Due to the noise around the turbine, the on-site supervisor may find it difficult to hear the operator's voice or make a mistake. The location of the dial gauge corresponding to the measured value that has been heard may be mistaken. Alternatively, the operator in charge of the dial gauge may mistakenly read the measurement value.
In view of the above circumstances, the present invention provides a turbine measurement system that enables a management operator such as a field supervisor to accurately grasp position measurement information of turbine components such as a turbine casing and a rotor of a turbine. It is an object of the present invention to provide a turbine positioning system and a turbine positioning method capable of accurately positioning the turbine.

In order to solve the above problems, a turbine measurement system according to the present invention includes:
A plurality of position sensors that are distributed in the turbine, detect the position of the measurement point on the turbine structure, and output detected position information;
Sensor information processing means for transmitting detected position information of each position sensor together with sensor identification information as transmission information;
Display processing means for receiving the transmission information and displaying a turbine image in which position information of each measurement point is reflected in the image data of the turbine;
It is provided with.

According to the turbine measurement system, the position of the measurement point on the turbine component such as the turbine casing or the rotor is detected by each position sensor. Transmission information including detection position information and sensor identification information of each position sensor is transmitted from the sensor information processing means. The sensor identification information is information for specifying the measurement point.
This transmission information is received by the communication unit of the display processing means. Preferably, the image data of the turbine is stored in the storage unit of the display processing means. The image processing unit of the display processing unit reads the turbine image data and reflects the position information of each measurement point on the turbine image data based on the received transmission information.
Alternatively, the sensor information processing means may include a turbine image storage unit and an image processing unit. In the sensor information processing means, turbine image data reflecting the position information of each measurement point may be created and transmitted as transmission information. (The turbine image data in the transmission information in this case includes detection position information and sensor identification information of each position sensor.)
As a reflection method, for example, a measurement display area is set for each portion corresponding to a measurement point on the turbine image data, and corresponding position information is written in each measurement display area.
The turbine image after the reflection process is displayed on a display unit such as a touch panel display. By checking this display screen, the manager (site supervisor) can accurately and easily grasp the positional deviation and inclination of the turbine component in real time.

It is preferable that the sensor information processing means and the display processing means are wirelessly connected.
This eliminates the need to route connection cables around the turbine.

The turbine positioning system according to the present invention includes the turbine measurement system and a plurality of position adjusting means for adjusting the position of the turbine structure, and the position adjusting means is distributedly arranged at various locations of the turbine. Features.
The method of the present invention is a turbine positioning method for positioning a turbine component using the turbine positioning system, wherein each position adjusting means is operated with reference to a turbine image displayed on the display processing means. Features.
The jack operator of the position adjusting means operates the position adjusting means in accordance with an instruction from the management worker. Thereby, positioning operations such as centering of the turbine casing and the rotor can be accurately performed.

  According to the turbine measurement system according to the present invention, the management worker can accurately grasp the position information of the turbine casing and the rotor. According to the turbine positioning system and the turbine positioning method according to the present invention, positioning work such as turbine casing and rotor centering can be accurately performed.

FIG. 1 is a schematic configuration diagram of a turbine positioning system including a turbine measurement system according to a first embodiment of the present invention. FIG. 2A is a flowchart showing the operation of the position sensor and sensor information processing means in the turbine measurement system. FIG. 2B is a flowchart showing a subroutine of a transmission information creation process by the sensor information processing means. FIG. 3 is a flowchart showing the operation of the touch panel display device (display processing means) in the turbine measurement system. FIG. 4 is a schematic configuration diagram of a part of the turbine measurement system according to the second embodiment of the present invention. FIG. 5 shows a third embodiment of the present invention, and FIG. 5 (a) is a cross-sectional view of a part of the internal compartment during disassembly or assembly. FIG. 2B is a cross-sectional view of a part of the inner compartment in an assembled state.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
As shown in FIG. 1, the position measurement and positioning object of the present embodiment is a turbine 9 for commercial power generation. The axial length of the turbine 9 is, for example, several meters to several tens of meters. The turbine 9 includes a rotor 91 and a turbine casing (turbine shell) 92 as a turbine component. The turbine casing 92 has, for example, a double structure of an inner casing (inner turbine shell) 93 and an outer casing (outer turbine shell) 94. The internal compartment 93 has a vertically divided structure of an upper half internal compartment 93a and a lower half internal compartment 93b. The outer casing 94 has a vertically divided structure with an upper half outer casing 94a and a lower half outer casing 94b. In the present embodiment, position measurement and centering (positioning) of the internal casing 93 are performed.

  The turbine positioning system 1 includes a plurality of mechanical jacks 40 (position adjusting means) and a turbine measurement system 2. The mechanical jacks 40 are distributed in the axial direction and the circumferential direction of the lower half internal compartment 93b of the internal compartment 93 to be centered. The position of the jack-corresponding portion of the lower half internal compartment 93b can be adjusted by the advance / retreat of the rod 41 of each jack 40. Further, the plurality of jacks 40 can adjust the position and angle of the lower half inner casing 93b and thus the inner casing 93 vertically, front and rear, and left and right.

  The turbine measurement system 2 includes a plurality of position sensors 10, a pair (a plurality) of sensor information processing means 20, and one touch panel display device 30 (a display processing means). The position sensor 10 detects the position of the measurement point p on the lower half internal compartment 93b. Preferably, the position sensor 10 is configured by a contact type digital sensor. A plurality of position sensors 10 are distributed in various places in the lower half internal casing 93b. Preferably, the plurality of position sensors 10 are arranged in a distributed manner in the axial direction and the circumferential direction of the turbine 9.

For example, ten position sensors 10 are assigned to each of the two side portions in the axial direction (left and right in FIG. 1) of the lower half internal casing 93b. Five measurement points p are set on each of the both side portions of the lower half internal casing 93b, and the probe of the position sensor 10 is in contact with each measurement point p.
The arrangement and the number of the position sensors 10 described above are merely examples, and can be appropriately changed according to the size, shape, and the like of the turbine 9 or the turbine component to be measured (in this case, the internal casing 93). The position sensor 10 may be arranged so as to correspond to the jack 40 on a one-to-one basis.

Sensor information processing means 20 are disposed on both sides (left and right in FIG. 1) of the turbine 9 in the axial direction. Each sensor information processing means 20 includes a sensor signal input unit 23, a transmission information creation unit 21, a storage unit 22, a wireless signal conversion unit 24, and a sensor side communication unit 25.
The position sensor 10 is connected to a corresponding port of the sensor signal input unit 23 via the cable 15. In FIG. 1, the cable 15 of the position sensor 10 on the left side of the internal compartment 93 is connected to the sensor signal input unit 23 of the sensor information processing means 20 on the left side. The cable 15 of the position sensor 10 on the right side of the internal casing 93 is connected to the sensor signal input unit 23 of the sensor information processing means 20 on the right side. By doing so, it is not necessary to route the cable 15 around the turbine 9 for a long distance.

  The transmission information creation unit 21 and the storage unit 22 may be configured by a microcomputer (hereinafter referred to as “microcomputer” as appropriate) or a programmable logic controller (hereinafter referred to as “PLC” as appropriate). The transmission information creation unit 21 may be configured by a microcomputer or PLC CPU. The storage unit 22 may be composed of a microcomputer or PLC RAM and ROM. The storage unit 22 stores a correspondence table 22d, an operation program for the transmission information creation unit 21, and the like. The correspondence table 22d is data representing the correspondence between each port of the sensor signal input unit 23 and the position sensor 10. That is, the correspondence relationship table 22d becomes sensor identification information that identifies which position sensor 10 and, therefore, the measurement point p is the input detected position information.

  The wireless signal conversion unit 24 converts information from the transmission information creation unit 21 into a wireless signal. Preferably, it converts into a wireless LAN signal. The communication unit 25 wirelessly transmits the wireless signal. Preferably, the communication unit 25 has not only a wireless transmission function but also a wireless transmission / reception function. More preferably, the communication unit 25 is configured by a WiFi router.

  Further, the sensor information processing means 20 includes a casing 29. The casing 29 accommodates a microcomputer or PLC constituting each of the elements 21 to 25, a WiFi router, a power supply circuit, and the like. Thus, the sensor information processing means 20 is a unit.

The touch panel display device 30 is disposed, for example, in the central portion of the turbine 9 in the axial direction. The position of the touch panel display device 30 in FIG. 1 is for convenience.
The touch panel display device 30 includes a display side communication unit 35, an image processing unit 31, a storage unit 32, and a touch panel display 33. The display-side communication unit 35 can receive wireless signals from the sensor-side communication units 25 and 25 on both the left and right sides. The sensor information processing means 20 and the touch panel display device 30 are wirelessly connected. There is no need to route a wired cable between the sensor information processing means 20 and the touch panel display device 30.
Preferably, the communication unit 35 has not only a wireless reception function but also a wireless transmission / reception function. More preferably, the communication unit 35 is configured by a WiFi router. A wireless local area network (wireless LAN) is constructed by the sensor information processing means 20 and the touch panel display device 30.

  The image processing unit 31 and the storage unit 32 may be configured by a microcomputer (hereinafter referred to as “microcomputer”) or a programmable logic controller (hereinafter referred to as “PLC”). The image processing unit 31 may be configured by a microcomputer or PLC CPU. The storage unit 32 may be configured by a microcomputer or PLC RAM and ROM. The storage unit 32 stores image data 32d of the turbine 9, an operation program of the image processing unit 31, and the like. The turbine image data 32d may be photographic data of the turbine 9, or may be schematic or detailed drawing data of the turbine 9.

An image 33d of the turbine 9 is displayed on the touch panel display 33 (turbine display screen). In the turbine image 33d, a measurement display area 33r corresponding to each measurement point p of the position sensor 10 is set. Further, the touch panel display 33 displays various function buttons or icons such as a reset button 33b, a communication status display 33c, and a device confirmation button 33e.
When the reset button 33b is touched, the reading of the position sensor 10 is set to zero. Preferably, the readings of the plurality of position sensors 10 are collectively set to zero.
The communication status display 33c displays whether the wireless communication status is good or abnormal (communication cut-off) with colors, characters, or the like.
When the device confirmation button 33e is touched, the screen is switched, and attribute information such as the connection configuration of the measurement system 2 and the IP addresses of the devices 10 and 20 is displayed.

  In FIG. 1, for convenience of explanation, one image of the entire turbine 9 is displayed on the touch panel display 33, but the left side portion and the right side portion of the turbine 9 may be displayed separately. In FIG. 1, the turbine 9 is viewed from the direction orthogonal to the axial direction, but the image of the turbine 9 viewed from the left side and the image viewed from the right side along the axial direction are displayed separately. May be. Further, the buttons 33b and 33c corresponding to the left side image and the buttons 33b and 33c corresponding to the right side image may be displayed separately.

  Further, the touch panel display device 30 includes a casing 39. In the casing 29, in addition to the touch panel display 33, a microcomputer or PLC constituting the elements 21 and 22, a WiFi router constituting the communication unit 35, a power supply circuit, and the like are housed. Thereby, the touch panel display device 30 is a unit.

A method for centering (positioning) the internal casing 93 using the turbine positioning system 1 will be described with reference to the flowcharts of FIGS.
A management worker a (site supervisor) is arranged on the touch panel display device 30. Each jack 40 is provided with a jack operator b. The position sensor 10 does not require any personnel.

As shown in FIG. 2A, the position information of each measurement point p in the internal compartment 93 is detected at short time intervals by each position sensor 10 (step 100).
The detected position information is input to the corresponding port of the sensor signal input unit 23 of the sensor information processing means 20 via the cable 15 (step 102).
Receiving this, the transmission information creation unit 21 creates transmission information (step 200). Specifically, as shown in FIG. 2B, sensor identification information corresponding to the position sensor 10 from which the detected position information is output is read from the correspondence table 22d of the storage unit 22 (step 201). That is, it is specified which measurement point p the detected position information belongs to. Then, the transmission information creation unit 21 creates transmission information in which sensor identification information is associated with the detected position information (step 202). Further, information specifying the destination touch panel display device 30 is added to the transmission information (step 203). For example, the IP address of the touch panel display device 30 is added.
As shown in FIG. 2A, the transmission information is wirelessly transmitted from the communication unit 25 (step 210).

As shown in FIG. 3, the transmission information is wirelessly received by the communication unit 35 (step 301).
The image processing unit 31 reads the turbine image data 32d stored in the storage unit 32 and performs image processing to reflect the transmission information on the turbine image data 32d (step 302). That is, based on the received transmission information (detected position information and sensor identification information), the position information of each measurement point p is reflected in the turbine image data 32d. Specifically, a measurement display area is set for each portion corresponding to the measurement point p on the turbine image data 32d, and the corresponding position information is inserted into each measurement display area.

The turbine image data after such image processing (reflection process) is displayed on the touch panel display 33 (step 303).
As illustrated in FIG. 1, the corresponding position information is displayed in the measurement display region 33 r in the turbine image 33 d of the touch panel display 33. As the position information, a distance from a position (0.00 mm) at the time of zero setting with the reset button 33b may be displayed. Alternatively, as the position information, the normal position of the measurement point p or the distance (shift amount) to the target position may be displayed.

By checking the turbine image 33d of the touch panel display 33, the management worker a can accurately grasp the positional deviation and inclination of the internal casing 93. In addition, the position information of the plurality of measurement points p can be grasped simultaneously and in real time.
Since it is not necessary for the operator to read out the measured values of the plurality of position sensors 10 in order, the working time can be greatly reduced. Furthermore, the operator who reads the position sensor 10 is unnecessary, and the required personnel can be reduced. Human errors such as reading errors of the position sensor 10 by humans can be reduced, and work quality can be improved.
Then, the management worker a can accurately instruct the operation amount of the jack 40 to each jack operator b. Each jack operator b operates the jack 40 in charge according to the instruction. Thereby, the centering (positioning) of the internal casing 93 can be performed accurately. By using the mechanical jack 40 instead of the hydraulic jack, the position of the internal casing 93 can be easily finely adjusted.
According to the turbine positioning method of the present invention, as described above, since the acquisition time of the position information of the positioning target can be greatly shortened, the construction period can be greatly shortened.

Next, another embodiment of the present invention will be described. In the following embodiments, the same reference numerals are given to the drawings for the same configurations as those already described, and the description thereof is omitted.
Second Embodiment
The measurement target is not limited to the internal casing 93 but may be the rotor 91.
The turbine positioning system 1 may be applied to the centering of the rotor 91. In this case, as shown in FIG. 4, the position sensors 10 are distributed around the shaft 91 c of the rotor 91, and the rotor 91 is rotated. As a result, the measurement point p of each position sensor 10 circulates (relatively moves) on the rotor shaft 91c. If the rotor 91 is accurately centered, the position information detected by the position sensor 10 is constant.

  On the other hand, as shown by the phantom line in FIG. 4, if the rotor 91 is inclined, the detected position information periodically varies accordingly. This detected position information is transmitted to the touch panel display device 30 via the sensor information processing means 20, and is reflected in the turbine image 33d of the touch panel display 33 (see FIG. 1).

<Third Embodiment>
The turbine measurement system 2 can also be applied to measure the level of the turbine components during disassembly and assembly of the turbine 9.
As shown in FIG. 5 (b), for example, a knock pin 95 is formed to protrude from the lower end surface of the upper half internal casing 93a. A pin hole 96 is formed in the upper end surface of the lower half internal casing 93b. In a state where the upper half inner casing 93a and the lower half inner casing 93b are assembled, the knock pin 95 is inserted and fitted into the pin hole 96. The clearance between the outer peripheral surface of the knock pin 95 and the inner peripheral surface of the pin hole 96 is extremely small, for example, about several tens μm to several hundreds μm. As a result, the positional deviation between the upper half inner casing 93a and the lower half inner casing 93b can be made sufficiently small. On the other hand, as shown in FIG. 5A, when jacking up the upper half internal compartment 93 a for disassembly, if the upper half internal compartment 93 a is tilted even slightly, the knock pin 95 will move to the inner periphery of the pin hole 96. It bites into the surface and increases friction.

Therefore, the position sensors 10 are dispersedly arranged with respect to the upper half internal casing 93a. The detected position information of the position sensor 10 is transmitted to the touch panel display device 30 via the sensor information processing means 20 (see FIG. 1). And by reflecting in the turbine image 33d of the touch panel display 33, the level (inclination degree) of the upper half internal compartment 93a can be determined. By jacking based on the determination, the upper half internal casing 93a can be smoothly lifted up while being kept horizontal.
Similarly, when lowering the upper half inner casing 93a during assembly, the level of the upper half inner casing 93a can be confirmed by the turbine measurement system 2.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the sensor information processing means 20 may have a turbine image storage unit and an image processing unit. In the sensor information processing means 20, turbine image data reflecting position information of each measurement point p may be created and transmitted as transmission information.
As a reflection method, the amount and direction of the deviation of the measurement point p from the normal position may be visualized by shifting or tilting the turbine image 33d from the normal position on the screen.
The position sensor 10 may output its own identification information together with the detected position information.
The position sensor 10 and the sensor information processing means 20 may be capable of wireless communication.
The sensor information processing means 20 and the display processing means 30 may be connected by wire.
The sensor information processing means 20 and the display processing means 30 may be integrated into one sensor information processing and display processing means.
The display unit 33 is not limited to a touch panel display, and may be a display without a touch function. The buttons 33b and 33c and the display 33e may be configured with actual buttons and actual displays.
As the position adjusting means, a hydraulic jack may be used instead of the mechanical jack 40.

  The present invention can be applied to an operation of centering a turbine component such as a casing of a commercial power generation turbine or a rotor.

a Manager (site supervisor)
b Jack operator p Measurement point 1 Turbine positioning system 2 Turbine measurement system 10 Position sensor 15 Cable 20 Sensor information processing means 21 Transmission information creation unit 22 Storage unit 22d Correspondence relationship table 23 Sensor signal input unit 24 Wireless signal conversion unit 25 Sensor side Communication unit 29 Casing 30 Touch panel display device (display processing means)
31 Image processing unit 32 Storage unit 32d Image data 33 Touch panel display (turbine display screen)
33r Measurement display area 33b Reset button 33c Communication status display 33d Turbine image 33e Device confirmation button 35 Display side communication unit 39 Casing 40 Mechanical jack (position adjusting means)
41 Rod 9 Turbine 91 Rotor (turbine component)
91c Rotor shaft 92 Turbine casing (turbine component)
93 Internal compartment 93a Upper half interior compartment 93b Lower half interior compartment 94 External compartment 94a Upper half exterior compartment 94b Lower half exterior compartment 95 Knock pin 96 Pin hole

Claims (5)

A plurality of position sensors that are distributed in the turbine, detect the position of the measurement point on the turbine structure, and output detected position information;
Sensor information processing means for transmitting detected position information of each position sensor together with sensor identification information as transmission information;
Display processing means for receiving the transmission information and displaying a turbine image in which position information of each measurement point is reflected in the image data of the turbine;
A turbine measurement system comprising:   Image processing in which the display processing means describes the detected position information in a measurement display area corresponding to each measurement point on the turbine image data based on the storage unit storing the image data of the turbine and the transmission information. The turbine measurement system according to claim 1, further comprising:   The turbine measurement system according to claim 1 or 2, wherein the sensor information processing means and the display processing means are wirelessly connected. The turbine measurement system according to any one of claims 1 to 3,
A plurality of position adjusting means distributed in various locations of the turbine and adjusting the position of the turbine structure;
A turbine positioning system comprising: A method for positioning a turbine component using the turbine positioning system of claim 4, comprising:
A turbine positioning method, wherein each position adjusting means is operated with reference to a turbine image displayed on the display processing means.

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