KR20160065235A - Semi-auto radiation inspection apparatus of attachable and detachable type - Google Patents

Abstract

The present invention relates to an attachable and detachable type semi-automatic radiation inspection apparatus for non-destructive inspection of a welded portion of a water wall boiler pipe in a steam power plant. The attachable and detachable type semi-automatic radiation inspection apparatus according to the present invention comprises: a radiation unit, a detection unit and a control unit. The radiation unit is provided with a first moving platform installed to be attachable to or detachable from one surface of the water wall boiler pipe in the steam power plant needing the non-destructive inspection, and a radiation emitting unit installed in the first moving platform to semi-automatically move up and down and emitting radiation to the welded portion of the water wall boiler pipe. The detection unit is provided with a second moving platform installed to be attachable to or detachable from the other surface of the water wall boiler pipe opposite to the radiation unit from the water wall boiler pipe, and a radiation detection unit installed in the second moving platform to semi-automatically move up and down and detecting the radiation emitted by the radiation emitting unit. In addition, the control unit controls up and down movement of the radiation unit and detection unit to enable the radiation detection unit to detect the radiation emitted by the radiation emitting unit during the non-destructive inspection.

Description

[0001] Semi-auto radiation inspection apparatus of attachable and detachable type [0002]

The present invention relates to a non-destructive inspection apparatus, and more particularly, to a detachable semi-automatic radiation inspection apparatus for non-destructive inspection of a welded portion of a water-cooled wall boiler pipe of a thermal power plant.

In order to inspect the welding part of the water cooling boiler pipe of the thermal power plant, most of the inspections were carried out through the same method as the visual inspection and the ultrasonic inspection (UT, Ultrasonic testing).

However, there are some combinations that can not be detected through UT inspection, and there is a problem that the inspection work takes a long time, so they are under study to try radiographic testing (RT, Radiographic Testing).

However, most of the radiation penetration tests are unsuitable for inspecting water-cooled wall boiler piping at a height of 40 m or more installed in a thermal power plant because the inspection equipment is fixed and the inspection object is moved and inspected.

Registration Utility Model No. 20-0472414 (Apr. 21, 2014)

Accordingly, it is an object of the present invention to provide a detachable semi-automatic radiographic inspection apparatus which can be detachably attached to a water-cooled wall boiler pipe for smoothly inspecting a welded portion of a water-cooled wall boiler pipe of a thermal power plant.

It is another object of the present invention to provide a detachable semi-automatic radiographic inspection apparatus for inspecting a welded portion of a water-cooled wall boiler pipe while being attached to a water-cooled wall boiler pipe of a thermal power plant.

It is still another object of the present invention to provide a light-weight detachable semi-

In order to attain the above object, the present invention provides a detachable radiation examination apparatus including a radiation part, a detection part and a control part. The radiating unit includes a first moving platform detachably installed on one side of a water-cooled wall boiler pipe of a thermal power plant requiring a nondestructive inspection, and a second moving platform installed to be semi-automatically movable up and down by the first moving platform, And a radiation emitting unit for radiating radiation to the welded portion. Wherein the detecting unit comprises a second moving platform detachably installed on the other surface of the water-cooled wall boiler pipe opposite to the radiating part with the water-cooled wall boiler pipe as a center, and a second moving platform installed to be movable up and down semi-automatically by the second moving platform And a radiation detection unit for detecting radiation emitted from the radiation emitting unit. The control unit controls the up and down movement of the radiation unit and the detection unit such that the radiation emitted from the radiation emitting unit is detected by the radiation detection unit upon non-destructive inspection.

In the detachable radiographic inspection apparatus according to the present invention, the first moving platform and the second moving platform each include a first horizontal frame, a second horizontal frame, a first guide bar, a second guide bar, , A transfer holder, a handle, and a driver. The second horizontal frame is spaced apart from the first horizontal frame by a predetermined distance. The first guide bar vertically connects opposite ends of the first and second horizontal frames. The second guide bar vertically connects the opposite ends of the first and second horizontal frames. The plurality of desorbers are installed at both ends of the first and second horizontal frames, respectively, and are detachably attached to the water-cooled wall boiler pipe. The moving cradle is connected to the first and second guide bars to move up and down, and one of the radiation emitting unit and the radiation detecting unit is mounted. The handle is connected to the moving cradle to move the moving cradle upward along the first and second guide bars. The driving unit adjusts a moving speed of the moving base when the moving base is moved toward the first horizontal frame by its own weight, the moving base being installed on the first and second horizontal frames and moving toward the second horizontal frame.

In the detachable radiographic inspection apparatus according to the present invention, the desorbing device may include a height adjuster, a fixing bracket, and a detachable block. The height adjuster is installed at one of both ends of the first and second horizontal frames, and adjusts a height of the height adjuster up and down. The fixing bracket is installed to face the water-cooled wall boiler pipe at one side of the height-adjustable base. The detachable block is detachably attached to the fixing bracket and has a curved surface corresponding to the outer diameter of the water-cooled wall boiler pipe so as to be in contact with the water-cooled wall boiler pipe and is detached and attached to the water-cooled wall boiler pipe depending on whether a magnetic force is applied .

In the detachable radiation inspection apparatus according to the present invention, the driver may include a shaft and a driving motor. The shaft is rotatably mounted on the first horizontal frame, the second horizontal frame, and the movement rest, and the movement rest is moved up and down in accordance with the rotation direction. And the driving motor rotates the shaft to adjust the moving speed of the moving platform to move downward.

The detachable radiation inspection apparatus according to the present invention may further include a photosensor and a drop prevention line. The photosensor is installed in the radiation unit facing the water-cooled wall boiler pipe and the detection unit, and detects and aligns the positions of the radiation emission unit and the radiation detection unit. One of the drop prevention lines is fixed to the radiation part and the detection part, and the other is fitted to a hole formed in the water-cooled wall boiler pipe to prevent the radiation part and the detection part from dropping.

In the detachable radiation inspection apparatus according to the present invention, the photosensor may be sensed through a hole formed in a welded portion of the water-cooled wall boiler pipe.

The present invention also provides a moving platform for a detachable radiographic apparatus comprising a first horizontal frame, a second horizontal frame, a first guide bar, a second guide bar, a plurality of detachers, a moving platform, a handle and a driver. The second horizontal frame is spaced apart from the first horizontal frame by a predetermined distance. The first guide bar vertically connects opposite ends of the first and second horizontal frames. The second guide bar vertically connects the opposite ends of the first and second horizontal frames. The plurality of desorbers are installed at both ends of the first and second horizontal frames, respectively, and are detachably attached to the water-cooled wall boiler pipe. The moving cradle is connected to the first and second guide bars to move up and down, and one of the radiation emitting unit and the radiation detecting unit is mounted. The handle is connected to the moving cradle to move the moving cradle upward along the first and second guide bars. The driving unit adjusts a moving speed of the moving base when the moving base is moved toward the first horizontal frame by its own weight, the moving base being installed on the first and second horizontal frames and moving toward the second horizontal frame.

The detachable semi-automatic radiographic inspection apparatus according to the present invention can easily detach and attach the radiation inspection unit to a water-cooled wall boiler pipe of a thermal power plant through a moving platform installed to be movable up and down, Can be performed smoothly.

That is, in the detachable semi-automatic radiological inspection apparatus according to the present invention, a moving platform is attached to a water-cooled wall boiler piping portion of a thermal power plant requiring nondestructive inspection, and then, through a radiation inspection unit moving up and down based on a moving platform, The non-destructive inspection of the welded portion of the pipe can be performed smoothly.

In addition, the detachable semiautomatic radiological examination apparatus according to the present invention moves the radiation examination unit upward through a handle, and then moves downward according to the self weight of the radiation examination unit, while controlling the descending speed through a driving unit, Inspection can be performed.

As described above, since the detachable semi-automatic radiographic apparatus according to the present invention operates semi-automatically, it is possible to reduce the capacity of the driving motor required for the driver. That is, when the operation for raising the radiation inspection unit is performed through the driver, a drive motor having a capacity larger than the capacity of the drive motor according to the present invention is required. However, in the case of the present invention, since the driving motor is used to move downward according to its own weight and adjust the descending speed of the radiation inspection unit when the radiation inspection unit descends, a small capacity of the driving motor can be used.

Therefore, since the detachable semi-automatic radiological examination apparatus according to the present invention can reduce the total weight of the apparatus by using a driving motor having a relatively small capacity, it is easy to move the detachable semi-automatic radiological examination apparatus, There is an advantage that it can be easily detached.

1 is a photograph showing a water-cooled wall boiler pipe.
FIG. 2 is a block diagram showing a detachable semi-automatic radiographic apparatus according to an embodiment of the present invention.
FIG. 3 is a schematic view showing a detachable semi-automatic radiographic inspection apparatus of FIG. 1 attached to a water-cooled wall boiler pipe of a thermal power plant.
4 is a perspective view showing a spinning unit of a detachable semi-automatic radiography apparatus according to an embodiment of the present invention.
5 is a side view of the radiating portion of Fig.
FIG. 6 is an enlarged view showing a lower part of the radiation part of FIG. 4 in which a radiation emitting unit is installed.
FIG. 7 is an enlarged view showing the upper part of the radiating part of FIG. 4. FIG.
FIG. 8 is a perspective view showing a state where the radiator of FIG. 3 is attached to a test bed of a water-cooled wall boiler pipe of a thermal power plant.
FIG. 9 is an enlarged view showing a state in which a radiator is attached to a water-cooled wall boiler pipe of the test bed of FIG. 8 by a desorber.
Fig. 10 is an enlarged view showing a state of non-destructive inspection of the welded portion of the water-cooled wall boiler pipe of the test bad shown in Fig. 8;

In the following description, only parts necessary for understanding embodiments of the present invention will be described, and descriptions of other parts will be omitted to the extent that they do not disturb the gist of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor is not limited to the meaning of the terms in order to describe his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention, so that various equivalents And variations are possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a photograph showing a water-cooled wall boiler pipe.

Referring to FIG. 1, since the water-cooled wall boiler pipe 110 installed on the water-cooling wall is large and wide, it can not be integrally manufactured. Thus, the unit type of pipe is welded to form the water-cooled wall boiler pipe 110.

The water-cooled wall boiler pipe 110 includes a plurality of unit pipes 117 arranged in the horizontal direction and a connecting portion 113 connecting the plurality of unit pipes 117. The unit pipes 117 on the same line are connected to each other by welding and the holes 115 are formed in the connecting part 113 where the welding part 111 is formed for welding the unit pipe 117. After connecting the unit piping 117, the hole 115 is filled with a metal material.

Whether the welded portion 111 of the water-cooled wall boiler pipe 110 is welded or not is confirmed through a non-wave inspection using the detachable semi-automatic radiological inspection apparatus 100 according to an embodiment of the present invention to be described later.

FIG. 2 is a block diagram showing a detachable semi-automatic radiography apparatus 100 according to an embodiment of the present invention. 3 is a schematic view showing a detachable semi-automatic radiological examination apparatus 100 of FIG. 1 attached to a water-cooled wall boiler pipe 110 of a thermal power plant.

2 and 3, the detachable semi-automatic radiological inspection apparatus 100 according to the present embodiment is installed in a water-cooled wall boiler pipe 110 in a detachable manner to perform a nondestructive inspection on the welded portion 111 Device.

In other words, the detachable semi-automatic radiology testing apparatus 100 according to the present embodiment is configured such that the radiation inspection units 13 and 23 semi-automatically move up and down through a moving platform 11 and 21, A non-destructive inspection apparatus for a welded portion 111 of a water-cooled wall boiler pipe 110, which includes a radiation portion 10, a detection portion 20, and a control portion 90, 70 and a drop prevention line 80. [ The radiation examination units (13, 23) include a radiation emitting unit (13) and a radiation detection unit (23). The moving platforms 11 and 21 include a first moving platform 11 on which the radiation emitting unit 13 is detachably installed and a second moving platform 21 on which the radiation detecting unit 23 is detachably installed do.

The radiation section (10) has a first moving platform (11) and a radiation emitting unit (13). The first moving platform 11 is detachably installed on one surface of the water-cooled wall boiler pipe 110 of the thermal power plant requiring nondestructive inspection. The radiation emitting unit 13 is installed so as to be semiautomatically movable up and down by the first moving platform 11 and radiates radiation to the welded portion 111 of the water cooled wall boiler pipe 110 under the control of the control unit 90 do.

The detection unit 20 includes a second moving platform 21 and a radiation detection unit 23. The second moving platform 21 is detachably mounted on the other surface of the water-cooled wall boiler pipe 110 on the opposite side of the radiator 10 with respect to the water-cooled wall boiler pipe 110. The radiation detecting unit 23 is installed so as to be semiautomatically movable up and down by the second moving platform 21 and detects radiation radiated from the radiation emitting unit 13 under the control of the control unit 90.

The control unit 90 controls the non-destructive inspection of the welded portion 111 of the water-cooled wall boiler pipe 110 through the movement control of the radiation unit 10 and the detection unit 20. The control unit 90 performs radiation of radiation through the radiation emitting unit 13 in the nondestructive inspection and detection of radiation passing through the water-cooled wall boiler pipe 110 through the radiation detection unit 23. [ The control unit 90 controls the movement of the radiation unit 10 and the detection unit 20 such that the radiation emitted from the radiation emitting unit 13 is detected by the radiation detection unit 23. [

As the control unit 90, a computer apparatus dedicated for detachable semiautomatic radiation examination, a general personal computer, a notebook computer, a smart phone, or the like may be used, but the present invention is not limited thereto. The control unit 90 may be connected to the radiation unit 10 or the detection unit 20 in a wired or wireless manner.

The photosensor 70 detects the position of the radiation emitting unit 13 and the radiation detecting unit 23 provided in the detecting unit 20 and the radiation unit 10 installed to face the water-cooled wall boiler pipe 110, . That is, since the radiation emitted from the radiation unit 10 must be detected by the detection unit 20, the radiation unit 10 and the detection unit 20 need to move in alignment with each other. The photosensor 70 detects whether the radiation unit 10 and the detection unit 20 are aligned with each other and move in the same direction when the radiation unit 10 and the detection unit 20 are moved. The photo sensor 70 includes a light emitting portion 71 and a light receiving portion 73. The light emitting portion 71 may be installed in the radiation portion 10 and the light receiving portion 73 may be installed in the detection portion 20. [

The photo sensor 70 is installed at a position corresponding to the hole 115 formed in the welded portion 111 of the water-cooled wall boiler pipe 110. For example, the photosensor 70 may be installed in the radiation emitting unit 13 and the radiation detecting unit 23, or may be installed in the moving platform 50 of the first and second moving platforms 11 and 21.

The drop prevention line (80) prevents the radiation part (10) fixed to the water-cooled wall boiler pipe (110) and the detection part (20) from dropping for any reason. One of these drop prevention lines 80 is fixed to the radiation unit 10 and the other is fixed to the hole 115 formed in the water-cooled wall boiler pipe 110, (20) is prevented from falling. The drop prevention line 80 includes a first fall prevention line 81 provided in the radiation portion 10 and a second fall prevention line 83 provided in the detection portion 20. [

The radiation unit 10 and the detection unit 20 have the same structure except that the unit provided in the first and second moving platforms 11 and 21 is the radiation emitting unit 13 or the radiation detecting unit 23 The radiation section 10 will be mainly described in the following drawings.

The radiation portion 10 will be described with reference to FIGS. 4 to 7. FIG. 4 is a perspective view showing a radiation unit 10 of a detachable semi-automatic radiography apparatus 100 according to an embodiment of the present invention. 5 is a side view of the radiation portion 10 of Fig. FIG. 6 is an enlarged view showing a lower portion where the radiation emitting unit 13 of the radiation unit 10 of FIG. 4 is installed. And FIG. 7 is an enlarged view of the upper portion of the radiation portion 10 of FIG.

The radiation unit 10 includes a first moving platform 11 and a radiation emitting unit 13 as described above.

The first moving platform 11 functions to guide the movement of the radiation emitting unit 13, together with a function of supporting the radiation emitting unit 13 to be installed in the water-cooled wall boiler pipe 110.

The first moving platform 11 includes a first horizontal frame 31, a second horizontal frame 33, a first guide bar 35, a second guide bar 37, a plurality of detachers 40, A cradle 50, a handle 59 and a driver 60.

The first horizontal frame 31 and the second horizontal frame 33 are installed at regular intervals. The first and second horizontal frames 31 and 33 are installed parallel to each other in the horizontal direction. A second horizontal frame (33) is disposed on top of the first horizontal frame (31).

Both ends of the first horizontal frame 31 and the second horizontal frame 33 are connected to each other by the first and second guide bars 35 and 37 to form a rectangular shape. The first guide bar 35 vertically connects opposite ends of the first and second horizontal frames 31 and 33. The second guide bar 37 connects the opposite ends of the first and second horizontal frames 31 and 33 in the vertical direction. The first and second guide bars 35 and 37 are installed parallel to each other in the vertical direction.

The plurality of desorbers 40 are installed at both ends of the first and second horizontal frames 31 and 33 and are detachably attached to the water-cooled wall boiler pipe 110.

The detacher 40 may include a height adjuster 41, a fixing bracket 43, and a detachable block 45. The height adjuster 41 is installed at one of the opposite ends of the first and second horizontal frames 31 and 33 and adjusts the vertical height thereof. The fixing bracket 43 is installed to face the water-cooled wall boiler pipe 110 on one side of the height adjustment base. The detachable block 45 is detachably attached to the fixing bracket 43 and has a curved surface corresponding to the outer diameter of the water-cooled wall boiler pipe 110 so as to be in contact with the water-cooled wall boiler pipe 110, Cooled water boiler piping (110).

At this time, the height adjuster 41 adjusts the vertical position of the removable block 45.

An electromagnet or a magnet may be used as the desorption block 45. In the case of the electromagnet, it is possible to attach or detach the water to the water-cooled wall boiler pipe 110 by losing or losing magnetism depending on whether or not electricity is applied to the detachable block 45. In the case of a magnet, the detachable block 45 may be composed of a metal block for transmitting magnetic force and a magnet for transmitting magnetic force through the metal block. The removal block 45 can be detached from the water-cooled wall boiler pipe 110 by adjusting the magnetic force through adjustment of the N pole and S pole of the magnet.

The moving cradle 50 is connected to the first and second guide bars 35 and 37 and moves up and down, and the radiation emitting unit 13 is mounted. The movable holder 50 includes a holder plate 51 on which a window 57 is formed in which a radiation 15 is radiated or incident at a central portion thereof and a holder plate 51 on which the holder plate 51 is fixed by first and second guide bars 35, And thus includes a plurality of guide blocks 53 that move up and down. Grooves or protrusions for mounting the radiation emitting unit 13 may be formed on the mounting plate 51. [ The guide block 53 is formed with a guide hole 55 to be inserted into the first and second guide bars 35 and 37. At least one of the guide holes 55 is formed on each of opposite sides of the mounting plate 51.

In the present embodiment, the example in which the stationary plate 51 of the mobile platform 50 is hung by the radiation emitting unit 13 is described, but the present invention is not limited thereto. For example, the movable mount 50 may further include a support plate on which the radiation emitting unit 13 can be mounted, and the radiation emitting unit 13 may be provided on the support plate. At this time, the support plate may be connected to the mounting plate 51 or may be integrally formed.

The movement restraint 50 of the radiation unit 10 is described so that the radiation cradle 50 is provided with the radiation emitting unit 13. However, A radiation detection unit 23 is provided. And detects the radiation 15 emitted from the radiation emitting unit 13 through the window 57 formed in the mount stand of the transfer holder 50. [

The handle 57 is connected to the movement restraint 50 to move the movement restraint 50 upward along the first and second guide bars 35, The operator can raise the movement restraint 50 on which the radiation emitting unit 13 is mounted to the second horizontal frame 33 through the operation of the handle 57. [ In the present embodiment, the example in which the handle 57 is provided in the guide block 53 is described, but the present invention is not limited to this.

Here, the handle 57 may be a fixed type handle used to simply lift the movement restraint 50 on which the radiation emitting unit 13 is mounted, toward the second horizontal frame 33. Or the handle 57 may be a rotary handle used to lift the movement restraint 50 on which the radiation emitting unit 13 is mounted by rotation to the two horizontal frames 33. [ A pulley, a rack and a pinion gear, etc., which can manually pull up the movement restraint 50, if the handle 57 is of a rotating type.

The driver 60 is installed on the first and second horizontal frames 31 and 33 to move the movable holder 50 downward. The driver 60 may include a shaft 61 and a drive motor 63. [ The shaft 61 is rotatably mounted on the first horizontal frame 31, the second horizontal frame 33 and the moving table 50. The shaft 61 receives the driving force of the driving motor 63, And lowered to the side where one horizontal frame 31 is present. The drive motor 63 rotates the shaft 61 to move the connected transfer stand 50 downward. At this time, the movable holder 50 includes the shaft 61 and moves up and down along the first and second guide bars 35 and 37.

At this time, the driving motor 63 rotates the shaft 61 to adjust the descending speed of the moving platform 50 moving downward. In other words, the movement restraint 50 moved toward the second horizontal frame 33 is basically moved downward by its own weight. When the drive motor 63 is not operated, the maximum descending speed due to the weight of the moving table 50 is determined, and the maximum descending speed is proportional to the moving distance of the moving table 50. The driving motor 63 can adjust the speed of the moving platform 50, which moves downward due to its own weight, from zero to the maximum falling speed.

In the present embodiment, the shaft 61 is connected in series to the drive shaft of the drive motor 63 and is installed in a direction perpendicular to the second horizontal frame 33, but the present invention is not limited thereto. For example, the shaft of the shaft 61 and the drive shaft of the drive motor 63 may be connected in a perpendicular direction by using gears. In this case, the driving motor 63 is installed parallel to the second horizontal frame 33.

In the present embodiment, the drive motor 63 is provided on the upper portion of the second horizontal frame 33, but it may be provided on the lower portion of the first horizontal frame 31. [

The detection unit 20 includes the second moving platform 21 and the radiation detection unit 23 as described above.

The second moving platform 21 functions to guide the upward and downward movement of the radiation detection unit 23 together with the function of supporting the radiation detection unit 23 to be installed in the water-cooled wall boiler pipe 110.

The second moving platform 21 includes a first horizontal frame 31, a second horizontal frame 33, a first guide bar 35, a second guide bar 37, a plurality of detachers 40, A cradle 50, a handle 57 and a driver 60.

The second movement platform 21 has the same structure as the first movement platform 11 except that the radiation detection unit 23 is installed on the movement platform 50, and thus a detailed description thereof will be omitted.

The process of performing the non-destructive inspection of the water-cooled wall boiler pipe 110 using the detachable semi-automatic radiological inspection apparatus 100 according to the present embodiment will be described with reference to FIGS. 1, 3, 8 to 10 Then, 8 is a perspective view showing a state in which the radiation part 10 of FIG. 3 is attached to the test bed of the water-cooled wall boiler pipe 110 of the thermal power plant. 9 is an enlarged view showing a state in which the radiation unit 10 is attached to the water-cooled wall boiler pipe 110 of the test bed of Fig. 8 by the desorber 40. Fig. And FIG. 10 is an enlarged view showing a non-destructive inspection state of the welded portion 111 of the water-cooled wall boiler pipe 110 of the test bed of FIG.

First, the first moving platform 11 is attached to the water-cooled wall boiler pipe 110 by using the desorber 40.

Next, the radiation unit 13 is fixed to the moving platform 50 of the first moving platform 11 to fix the radiation unit 10 to the water-cooled wall boiler pipe 110.

The detection unit 20 is connected to the water-cooled wall boiler pipe 110 on the opposite side to the side where the radiation unit 10 is installed in the same manner as the method of fixing the radiation unit 10 to the water-cooled wall boiler pipe 110 Fix it.

The handle 57 is manually operated to raise the movable holder 50 from the first horizontal frame 31 side to the second horizontal frame 33 side. At this time, the movable holder 50 is lifted up according to the guidance of the first guide bar 35, the second guide bar 37 and the shaft 61.

Next, the control unit 90 aligns the positions of the radiation emitting unit 13 and the radiation detecting unit 23 in accordance with the detection signal of the photosensor 70.

The control unit 90 performs nondestructive inspection of the welded portion 111 of the water-cooled wall boiler pipe 110 while lowering the radiation emitting unit 13 and the radiation detecting unit 23 through the driving of the driver 60. That is, the radiation emitting unit 13 and the radiation detecting unit 23 start to move downward by their own weight, and the control unit 90 controls the radiation emitting unit 13 and the radiation detecting unit 23 ) While controlling the descending speed of the non-destructive test.

As described above, the detachable semi-automatic radiological examination apparatus 100 according to the present embodiment is configured such that the radiation inspection units 13 and 23 are mounted on the water-cooled wall boiler piping of the thermal power plant through the moving platforms 11 and 21, The water non-destructive inspection of the welded portion 111 of the water-cooled wall boiler pipe 110 can be performed smoothly.

That is, the attachable / detachable semi-automatic radiological examination apparatus 100 according to the present embodiment is configured to attach the moving platforms 11 and 21 to the water-cooled wall boiler pipe 110 of the thermal power plant requiring nondestructive inspection, The welded portion 111 of the water-cooled wall boiler pipe 110 can be inspected smoothly through the radiation inspection units 13 and 23 moving downward with the base plate 21 as a base.

It should be noted that the embodiments disclosed in the present specification and drawings are only illustrative of specific examples for the purpose of understanding, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: Radiation section 11: First moving platform
13: radiation emitting unit 15: radiation
20: detecting unit 21: second moving platform
23: radiation detecting unit 31: first horizontal frame
33: second horizontal frame 35: first guide bar
37: second guide bar 40: removable machine
41: height adjuster 43: fixed bracket
45: detachable block 50: moving cradle
51: mounting plate 53: guide block
55: guide hole 57: window
59: handle 60: driver
61: shaft 63: drive motor
70: Photoelectric sensor 71:
73: light receiving section 80: drop prevention line
81: first fall prevention wire 83: second fall prevention wire
90:
100: Detachable semi-automatic radiography system
110: water-cooled wall boiler piping 111: welded part
113: connection part 115: hole
117: Unit piping

Claims (6)

A first moving platform detachably installed on one surface of a water-cooled wall boiler pipe of a thermal power plant requiring nondestructive inspection, and a second moving platform installed to be semi-automatically movable up and down by the first moving platform, A radiation unit having a radiation emitting unit for emitting radiation;
A second moving platform detachably installed on the other surface of the water-cooled wall boiler pipe on the opposite side of the radiating part with the water-cooling wall boiler pipe as a center; and a second moving platform installed to be semi-automatically movable up and down by the second moving platform, A detection unit having a radiation detection unit for detecting radiation emitted from the radiation unit;
A control unit for controlling the up and down movement of the radiation unit and the detection unit so that the radiation emitted from the radiation emitting unit is detected by the radiation detection unit when the non-destructive inspection is performed;
And a detachable semi-automatic radiographic apparatus. 2. The system of claim 1, wherein the first moving platform and the second moving platform, respectively,
A first horizontal frame;
A second horizontal frame spaced apart from the first horizontal frame by a predetermined distance;
A first guide bar vertically connecting opposite ends of the first and second horizontal frames;
A second guide bar vertically connecting the opposite ends of the first and second horizontal frames;
A plurality of desorbers installed at both ends of the first and second horizontal frames and detachably attached to the water-cooled wall boiler pipe;
A moving stand connected to the first and second guide bars and moving up and down, wherein one of the radiation emitting unit and the radiation detecting unit is mounted;
A handle coupled to the moving platform to move the moving platform upwardly along the first and second guide bars;
A driver installed in the first and second horizontal frames and adjusting a moving speed when the moving holder, which is moved toward the second horizontal frame, moves toward the first horizontal frame by its own weight;
Wherein the radiation detector comprises: 3. The apparatus of claim 2,
A height adjuster installed at one of both ends of the first and second horizontal frames and adjusting the height of the first and second horizontal frames up and down;
A fixing bracket installed on one side of the height adjuster so as to face the water-cooled wall boiler pipe;
A detachable block detachably attached to the fixing bracket and having a curved surface corresponding to an outer diameter of the water-cooled wall boiler pipe so as to be in contact with the water-cooled wall boiler pipe and being detachably attached to the water-cooled wall boiler pipe according to application of a magnetic force;
Wherein the radiation detector comprises: 3. The apparatus according to claim 2,
A shaft rotatably installed on the first horizontal frame, the second horizontal frame, and the movement restrainer, the movement restrainer moving up and down according to the rotation direction;
A driving motor that rotates the shaft to adjust a moving speed of the moving platform to move downward;
Wherein the radiation detector comprises: The method according to claim 1,
A photo sensor mounted on the detector to detect and align the position of the radiation emitting unit and the radiation detecting unit;
One of which is fixed to the radiating part and the other of which is a detection part, and the other is a fall preventing wire which hits a hole formed in the water-cooled wall boiler pipe to prevent the radiating part and the detecting part from falling,
Wherein the photosensor senses the water through a hole formed in a welded portion of the water-cooled wall boiler pipe. A first horizontal frame;
A second horizontal frame spaced apart from the first horizontal frame by a predetermined distance;
A first guide bar vertically connecting opposite ends of the first and second horizontal frames;
A second guide bar vertically connecting the opposite ends of the first and second horizontal frames;
A plurality of desorbers installed at both ends of the first and second horizontal frames and detachably attached to water-cooled wall boiler pipes of the thermal power plant;
A moving stand connected to the first and second guide bars and moving up and down, wherein one of the radiation emitting unit and the radiation detecting unit is mounted;
A handle coupled to the moving platform to move the moving platform upwardly along the first and second guide bars;
A driver installed in the first and second horizontal frames and adjusting a moving speed when the moving holder, which is moved toward the second horizontal frame, moves toward the first horizontal frame by its own weight;
A movable platform for a removable semi-automatic radiographic inspection apparatus.

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