KR101972353B1 - Automatic Alignment Rolling Device For Precise Inspection Of Turbine Rotors - Google Patents

Abstract

The present invention is an automatic alignment rolling device for the inspection of the improved turbine rotor so that the inspection work can be carried out safely and conveniently while rotating while supporting both ends of the rotor shaft of the turbine rotor to check the turbine rotor It is about. Its composition; It is to enable the shaft rotation while the turbine rotor is supported for maintenance of the turbine rotor, the rotor of the power plant turbine; A first rotor shaft support portion for supporting one end of the rotor shaft of the turbine rotor and a second rotor shaft support portion spaced apart from the first rotor shaft support portion by the length of the turbine rotor for supporting the other end of the rotor shaft; At least one of the first rotor shaft support and the second rotor shaft support; A base frame which is installed upright on the ground and has a trapezoidal shape; A pair of rotor shaft rotating rollers rotatably installed on an upper end of the base frame and arranged in parallel to support a bottom of the rotor shaft; And a rotor shaft rotating roller driver for rotating the rotor shaft mounted on the rotor shaft rotating roller by driving the rotor shaft rotating roller. The width of the bottom plate of the base frame is characterized in that the left and right ends thereof are located outside the extension line of the line segment between the center point of the rotor shaft and the rotor shaft rotating roller mounted on the rotor shaft rotating roller.

Description

Automatic Alignment Rolling Device For Precise Inspection Of Turbine Rotors}

The present invention relates to a turbine rotor inspection apparatus, and more specifically, to check the turbine rotor while rotating while supporting both ends of the rotor shaft of the turbine rotor to improve the inspection can be done safely and conveniently The present invention relates to an automatic alignment rolling device for inspecting a turbine rotor.

Power plants generally generate electricity by running turbines using steam. Therefore, plant-scale turbines are used, which require periodic maintenance. However, the turbine is so large that dedicated equipment is needed to service it.

The present invention relates in particular to a turbine rotor inspection device for inspection and maintenance of a turbine rotor which is a rotor in a turbine. In order to gradually repair or repair a large number of blades radially installed along the circumferential direction of the turbine rotor, a device capable of rotating the rotor shaft at a predetermined height from the ground is required. Such equipment has conventionally been proposed by the inventors.

The turbine rotor support (refer to Korean Utility Model Registration Application No. 20-2008-0008810, hereinafter referred to as a prior art) for the inspection and maintenance of the turbine rotor, as shown in FIG. 1, has a driving side device 120 and a power generating device. There is no driven side device 130.

According to the prior art, the drive side device 120, as shown in Figure 2, the rotor shaft support rollers (212, 213) for supporting the rotor shaft 110 of the turbine rotor 100; A first power transmission unit 215 (first chain) connected to the gear reduction unit 217 to transfer power to the driving support roller 212; A second power transmission unit 216 (second chain) connected to the driving support roller 212 to transmit power to the driven support roller 213; A power generator 218 connected to the gear reduction unit 217 to generate and transmit power, and mounted inside the main body 211; The rotor shaft support rollers 212 and 213 are supported, and a control box 221 is provided outside, and the first power transmission unit 215, the gear reduction unit 217, and the power generation unit 218 therein. It includes; a main body 211 that incorporates.

According to the prior art, the first and second power transmission parts 215 and 216 are in a chain. Due to the nature of the chain, the rotating side is pulled and tensioned, while the opposite side is extended, and when the forward rotation and the reverse rotation, the exact rotational force is not transmitted, and the rotational force of the driving support roller 212 is transmitted to the driven support roller 213 by the chain. The drive support roller 212 is first rotated and the second chain 216 is rotated and the driven support roller 213 is rotated while the rotor shaft 110 is not rotated at the same time, thereby rotating the turbine shaft 110. As a result, the rotation of the turbine shaft 110 becomes nonuniform, which requires a lot of initial rotational force.

In addition, there is no proper regulation on the left and right widths of the bottom surface of the turbine rotor support, and the width thereof is narrow, so that the heavy turbine is loaded on the first and second rotor shaft support rollers 212 and 213. There was a risk that the device could be tilted or even rolled over as shown in FIG. 3.

In addition, since the size of a turbine handles a conventional turbine rotor support large, the distance L of a drive side apparatus and a driven shaft apparatus is also considerable. Therefore, it is very difficult for the drive side device and the driven shaft device to have each center axis C1, C2 positioned on one line. Therefore, there is a problem that the time required for the inspection work is delayed and the center axis is not well matched, the rotation is not smooth and the parts are damaged.

Republic of Korea Patent Application No. 10-2011-0029701 Republic of Korea Patent Application No. 10-2013-0030902 Korea Utility Model Application No. 20-2008-0008810

An object of the present invention for the above problems is to provide an automatic alignment rolling device for the inspection of the turbine rotor that allows the rotor rotor shaft to rotate slowly while supporting both ends of the turbine rotor shaft for maintenance of the turbine rotor. It is to offer. It is a specific object of the present invention to provide an automatic alignment rolling device for inspecting a turbine rotor with improved function in many aspects, such as a risk of overturning, which can reliably transmit power, and have a self-aligning function.

The above object is to enable the shaft rotation while supporting the turbine rotor for maintenance of the turbine rotor, which is the rotor of the power plant turbine;

A first rotor shaft support portion for supporting one end of the rotor shaft of the turbine rotor and a second rotor shaft support portion spaced apart from the first rotor shaft support portion by the length of the turbine rotor for supporting the other end of the rotor shaft;

At least one of the first rotor shaft support and the second rotor shaft support;

A base frame which is installed upright on the ground and has a trapezoidal shape; A pair of rotor shaft rotating rollers rotatably installed on an upper end of the base frame and arranged in parallel to support a bottom of the rotor shaft;

And a rotor shaft rotating roller driver for rotating the rotor shaft mounted on the rotor shaft rotating roller by driving the rotor shaft rotating roller.

The width of the bottom plate of the base frame is characterized in that the left and right ends of the bottom plate is positioned outside the extension line of the line segment between the center point of the rotor shaft and the rotor shaft rotating roller mounted on the rotor shaft rotating roller. Is achieved by an automatic alignment rolling device for inspection of the turbine rotor.

According to another feature of the invention, the rotor shaft rotating roller drive unit is a drive motor installed in the base frame; A speed reducer installed at an output shaft of the drive motor; An electric gear connected to the output shaft of the reducer; A center gear meshed with the electric gear; And a pair of driving rollers respectively engaged on the left and right sides of the center gear and installed on the rotating shaft of the rotor shaft rotating roller.

According to another feature of the present invention, a pair of guide rollers are installed to support the left and right and left and down directions of the rotor shaft to the outside of the rotor shaft rotation roller in order to prevent the rotor shaft from falling from the rotor shaft rotation roller; It may further include.

According to another feature of the invention, the roller mounting rod is installed on the upper end of the base frame to install the rotor shaft rotating roller; including;

The roller mounting bracket may be installed to be rotated about a vertical axis perpendicular to the ground with respect to the base frame. Bearing means may be interposed between the roller mount and the base frame for smooth rotation of the roller mount.

According to another feature of the invention, the first rotor shaft support portion or the second rotor shaft support portion is provided with a laser transmitter so as to shine the laser light horizontally toward the second rotor shaft support portion or the first rotor shaft support portion. Can be.

According to the present invention, there is provided an automatic alignment rolling device for inspection of a turbine rotor, in which a drive unit for rotating the turbine rotor with its shaft center uses a gear-type transmission means, which enables reliable power transmission. In addition, the left and right widths of the base frame are set stably so that there is no risk of the device overturning under various circumstances; The rotor shaft support roller can be rotated about the axis perpendicular to the ground, that is, it has a careful function, so that the center line of the rotor shaft is automatically in a straight line to increase the contact area and reduce the rotational load and eliminate the wear of the device. An automatic alignment rolling device for checking the turbine rotor is provided. Further, there is provided an automatic alignment rolling device for inspecting a turbine rotor, in which the installation height of the first rotor shaft support and the second rotor shaft support can be easily matched using a laser beam, thereby facilitating setting of the device.

1 is a plan view of the turbine rotor support according to the prior art.
2 is a schematic front view of a turbine rotor support according to the prior art.
3 is a state diagram used in the turbine rotor support according to the prior art.
4 is a state diagram of use of the automatic alignment rolling device for the inspection of the turbine rotor according to an embodiment of the present invention.
5 is a perspective view of the first rotor shaft support of the automatic alignment rolling device for the inspection of the turbine rotor according to an embodiment of the present invention.
6 is a front view of the automatic alignment rolling device for the inspection of the turbine rotor according to an embodiment of the present invention.
7 is a plan view of the automatic alignment rolling device for the inspection of the turbine rotor according to an embodiment of the present invention.
8 is a cross-sectional configuration diagram of the base frame for explaining the careful function of the automatic alignment rolling device for the inspection of the turbine rotor according to an embodiment of the present invention.
9 is a side view of a state of use of the automatic alignment rolling device for the inspection of the turbine rotor according to an embodiment of the present invention.
10 is a partial front view of an automatic alignment rolling apparatus for inspecting a turbine rotor according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the details of the present invention. In particular, it will be described with reference to FIGS. 4 to 10 but where necessary will be described with reference to a specific drawing.

The automatic alignment rolling device (hereinafter referred to as an "automatic alignment rolling device") for inspecting the turbine rotor according to the present invention is to rotate the shaft while supporting the turbine rotor for maintenance of the turbine rotor, which is the rotor of the turbine for a power plant. To make it possible.

The automatic alignment rolling device is for supporting the first rotor shaft support part (1) for supporting one end of the rotor shaft (110) of the turbine rotor and the other end of the rotor shaft (110). It consists of a second rotor shaft support (3) which is installed spaced apart by the length of the turbine rotor. The first rotor shaft support 1 and the second rotor shaft support 2 may have the same configuration but may not. For example, the driving unit may be omitted in the second rotor shaft support 2. And the watch function to be described later can also be installed on either side.

 At least one of the first rotor shaft support 1 and the second rotor shaft support 3 has the following configuration. Hereinafter, the first rotor shaft support 1 will be described.

The base frame 5 is installed upright on the ground and has a trapezoidal shape. Base frame 5 may be in the form of a housing to accommodate the accessory therein.

A pair of rotor shaft rotating rollers (7, 9) is rotatably installed on the top of the base frame. The rotor shaft rotating rollers 7 and 9 are installed on the roller mounting base 11 installed on the upper plate 5a of the base frame. The rotor shaft rotating rollers 7 and 9 are arranged in parallel to support the bottom of the rotor shaft 110.

The rotor shaft rotating roller driver 13 drives the rotor shaft rotating rollers 7, 9 so that the rotor shaft 110 mounted on the rotor shaft rotating rollers 7, 9 is rotated.

The rotor shaft rotating roller driver 13 includes a drive motor 15 installed on the base frame 5; A reducer (17) installed on the output shaft of the drive motor (15); An electric gear 19 connected to the output shaft of the reducer 17; A center gear 21 meshed with the electric gear 19; And a pair of drive rollers 23 and 25 respectively installed on the rotation shafts of the rotor shaft rotating rollers 7 and 9, which are engaged with each other on the left and right sides of the center gear 21, respectively. In other words, according to the present invention, the driving force of the driving motor 15 is transmitted to the rotor shaft rotation rollers 7 and 9 through one gear train.

As shown in FIG. 6, the width W of the bottom plate 27 of the base frame 5 has a rotor shaft 110 whose left and right ends 27a and 27b are mounted on the rotor shaft rotating rollers 7 and 9. The center point (P1) and the center point (P2, P2 ') of the rotor shaft rotary roller is located outside the extension line (E, E') of the line segment. This geometry prevents the device from overturning as shown in FIG. Between the body of the base frame 5 and the bottom plate 27 may be installed a longitudinal reinforcing plate 26 of a right triangle shape for strength reinforcement. The vertical reinforcing plate 26 is provided with a pair of front and back, a plurality of horizontal reinforcing plate 28 is installed between the vertical reinforcing plate 26.

According to the embodiment of the present invention, the longitudinal reinforcing plate 26 and the horizontal reinforcing plate 28 may be installed in a folding or assembly disassembly manner. The rotor shaft 110 is to reduce the volume of the device by folding or removing them if the scale is small.

According to this embodiment, a pair of guide rollers 29 and 31 are provided to prevent the rotor shaft 110 from falling from the rotor shaft rotating rollers 7, 9. The guide rollers 29 and 31 are rotatably installed on the roller mounting base 11 so as to support the left and right or left and right directions of the rotor shaft 110 on the outside of the rotor shaft rotating rollers 7 and 9.

According to this embodiment, the long side holes 35 are provided on both side plates 33 of the roller mounting stand, and the shafts 29a and 31a of the guide rollers 29 and 31 are connected to the long holes 35 through a bearing. Combined.

And the long hole 35 is provided with a pressure plate (37) for supporting the shaft (29a, 31a) of the guide rollers (29, 31), the pressure plate (37) is a screw rod 41 with a handle (39) Is connected. The screw rod 41 is screwed to the side plate 33. According to this, the position of the pressure plate 37 can be adjusted by turning the handle 39, and as a result, the distance between the guide rollers 29 and 31 can be adjusted. This is for enabling the guide rollers 29 and 31 to be adjusted in the front-rear direction with respect to the rotor shaft 110 having a different diameter.

According to another embodiment of the present invention, the roller mounting stand 11 may be installed to be rotated about a vertical axis (V) perpendicular to the ground with respect to the base frame 5, as shown in FIG. . Bearing means may be interposed between the roller mount 11 and the base frame 5 for smooth rotation of the roller mount 11. This is an automatic sorting device, which is particularly careful. This function does not need to be installed in both the first rotor shaft support 1 and the second rotor shaft support 3, but only in one of them.

This careful function is described as follows. The center of the lower plate of the roller mounting table 11 is provided with a guard shaft 43 in a right angle direction, and a bearing means 45 is interposed between the guard shaft 43 and the upper plate 5a of the base frame. This bearing means 45 will be suitable for thrust bearings. According to such a configuration, even when the center shaft C1 of the first rotor shaft support 1 and the center shaft C2 of the second rotor shaft support 3 are slightly shifted as shown in the enlarged view of FIG. Under the seating process, the center axes C1 and C2 are automatically aligned so as to be in a straight line.

According to a further embodiment of the present invention, the first rotor shaft support 1 or the second rotor shaft support 3 is horizontal toward the second rotor shaft support 3 or the first rotor shaft support 1. The laser transmitting apparatus 47 may be installed so that the laser beam Y may be emitted. The laser transmitting device 47 generates a laser beam Y to be sent to the opposite rotor shaft support portion. The operator can know whether the level of the first and second rotor shaft support portions 1, 3 is aligned by time. Furthermore, by installing the laser receiving device 49, it is possible to apply a signal to the operator or the control unit when the level is correct.

Hereinafter, another embodiment of the present invention will be described with reference to FIG. 10. According to this embodiment, any one or more of the guide rollers 29 and 31 can be rotated in the direction of spreading outward from the roller mounting base 11. To this end, the guide roller 31 is installed on the roller mounting bracket 11 via the rotating arm 51. According to this, the guide roller 31 can be rotated and opened as shown by a dashed-dotted line, and can increase the degree of freedom for the movement of the rotor shaft 110 as necessary.

The configuration shown and described above is only a preferred embodiment based on the technical spirit of the present invention. Those skilled in the art will be able to make various modifications based on common technical knowledge, but it should be noted that this may be included in the protection scope of the present invention.

1,3: 1st, 2nd rotor shaft support part 5: Base frame
7,9: rotor shaft rotation roller 11: roller mounting base
13: rotor shaft rotation roller drive unit 15: drive motor
17: reducer 19: electric gear
21: center gear 23,25: driving roller
27: bottom plate 29, 31: guide roller
33: side plate 35: long hole
37: pressure plate 41: screw rod
43: careful shaft 45: bearing means
47: laser transmitter 49: laser receiver
51: rotating arm

Claims (5)

It is to enable the shaft rotation while the turbine rotor is supported for maintenance of the turbine rotor, the rotor of the power plant turbine;
The first rotor shaft support 1 for supporting one end of the rotor shaft 110 of the turbine rotor and the other end of the rotor shaft 110 as long as the length of the turbine rotor in the first rotor shaft support 1 Consists of the second rotor shaft support (3) spaced apart;
At least one of the first rotor shaft support (1) and the second rotor shaft support (3);
A base frame 5 having a trapezoidal shape as being installed upright on the ground;
A pair of rotor shaft rotating rollers (7, 9) rotatably installed on the base frame (5) and arranged in parallel to support the bottom of the rotor shaft (110);
A rotor shaft rotating roller driver (13) for rotating the rotor shaft (110) mounted on the rotor shaft rotating rollers (7, 9) by driving the rotor shaft rotating rollers (7, 9);
The width of the bottom plate of the base frame 5 is the center point of the rotor shaft 110 and the rotor shaft rotating rollers (7, 9) on which the left and right ends of the bottom plate are placed on the rotor shaft rotating rollers (7, 9). Is positioned outside the extension line of the line segment following the center point of;
The rotor shaft rotating roller drive unit 13,
A driving motor 15 installed in the base frame 5; A reducer (17) installed on the output shaft of the drive motor (15); An electric gear 19 connected to the output shaft of the reducer 17; A center gear 21 meshed with the electric gear 19; And a pair of drive rollers 23 and 25 which are respectively engaged with the left and right sides of the center gear 21 and are respectively installed on the rotation shafts of the rotor shaft rotation rollers 7 and 9;
It is to prevent the rotor shaft 110 from falling from the rotor shaft rotating rollers 7 and 9, and the left and right lateral direction of the rotor shaft 110 to the outside of the rotor shaft rotating rollers 7, and 9 or A pair of rotatably installed on the roller mounting base 11 to support the lateral direction is installed to support the lateral or lateral direction of the rotor shaft 110 on the outer side of the rotor shaft rotation roller (7, 9) Further comprising guide rollers (29, 31);
Long side holes 35 are provided on both side plates 33 of the roller mounting stand 11, and shafts 29a and 31a of the guide rollers 29 and 31 are connected to the long holes 35 through bearings. Combined;
The long hole 35 is provided with a pressure plate 37 for supporting the shaft (29a, 31a) of the guide rollers 29, 31, the screw plate 41 is attached to the handle plate 39 ) Are linked; The side plate 33 is screwed onto the screw rod 41; Turning the handle 39 can adjust the gap between the guide rollers 29, 31;
At least one of the guide rollers (29, 31) is characterized in that it is installed on the roller mounting bracket 11 via the rotating arm (51) to be able to rotate in the direction that is outwardly from the roller mounting (11) Automatic alignment rolling device for checking turbine rotor.
delete delete The method of claim 1,
The roller mounting stand (11) is installed to be rotated about a vertical axis perpendicular to the ground with respect to the base frame (5);
Automatic alignment rolling device for the inspection of the turbine rotor, characterized in that the thrust bearing is installed between the roller mounting base (11) and the base frame (5).
The method of claim 1,
A laser transmitting device for projecting the laser light horizontally toward the second rotor shaft support part 3 or the first rotor shaft support part 1 on the first rotor shaft support part 1 or the second rotor shaft support part 3. Automatic alignment rolling device for the inspection of the turbine rotor, characterized in that the 49 is installed.

Images