KR101939534B1 - Guide device for inspection and removal tool for foreign object in steam generator, inspection and removal device - Google Patents

Abstract

The present invention provides a guide device for an inspection and removal tool for a foreign object in a steam generator and an inspection and removal device therewith. The guide device for an inspection and removal tool for a foreign object of the steam generator includes: a fixed part which is installed and fixed inside the steam generator; a guide part connected to the fixed part, formed in the shape of a tube having a hollow to be connected to a plurality of guide tubes, and extended to a first position in order to be guided to the first position which is an inspection and removal position for the foreign object by inserting the inspection and removal tool for a foreign object; and a link part connecting the guide part to the fixed part and controlling the position and angle of the guide part to transfer the guide part to the first position.

Description

TECHNICAL FIELD [0001] The present invention relates to a device for inspecting and removing foreign substances in a steam generator, and a foreign matter inspection and removal device having the same. [0002]

The present invention relates to a device for inspecting and removing a foreign substance in a steam generator and a device for inspecting and removing foreign substances, and more particularly, to a steam generator for inspecting and removing foreign substances in a steam generator which can be safely and accurately accessed, A tool guiding device and a foreign substance inspection and removal device.

In the steam generator of the nuclear power plant, a plurality of heat transfer tubes are densely arranged inside, and a high temperature fluid flows into the heat transfer tubes, and a low temperature fluid flows out of the heat transfer tubes to generate steam by heat exchange. Foreign matter remaining in the steam generator flows while meeting with the high-pressure steam, thereby damaging the tube. When the heat transfer pipe is damaged, high temperature and high pressure radioactive material flowing through the heat transfer pipe leaks to the outside, which can cause severe pollution in the nuclear power plant. Therefore, in general, nuclear power plants are conducting periodic inspections for the integrity of the tubes.

The Eddy Current Test (ECT), a non-destructive test, was conducted as a method for testing the integrity of conventional steam generators. It detects the foreign matter state through the abnormal signal, judges the wear of the heat transfer pipe according to the result, and carries out maintenance (pipe closure, cutting, etc.) of the heat transfer pipe to prevent the diffusion of the pollutant.

However, in the case of the conventional eddy current test (ECT), the shape of the foreign matter is not specific because it is read depending on the signal. Therefore, there is a problem that the lifetime of the equipment is shortened and the maintenance cost is increased because the state of the foreign matter is not accurately grasped at the time of the post-inspection action and the speculative action is taken.

In addition, there is a conventional system for inspecting a heat transfer tube inside a steam generator using a mobile robot. However, when the apparatus is vertically lowered to a desired position, the apparatus is interfered with the edge of the structure inside the steam generator, It may be difficult to insert the probe into the correct examination position due to the occurrence of the phenomenon or the resistance of the introduced water. In this case, it is difficult for the camera or the endoscope to approach the accurate inspection position inside the steam generator, so that it is still difficult to accurately grasp the state of the foreign matter.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a foreign matter inspection and removal tool guiding device and foreign matter detection device for a steam generator capable of safely and accurately approaching inspection and removal positions without interference of foreign matter inspection and removal tools with obstacles in the steam generator. Inspection and removal device.

In order to attain the above object, the apparatus for inspecting and removing a foreign object of a steam generator according to the present invention comprises a fixing unit fixedly mounted in a steam generator, and a foreign matter inspection and removal tool inserted therein, A guide portion connected to the fixing portion so as to be guided to the first position and having a plurality of guide tubes connected to each other in a vertical direction and having a hollow shape and extending to the first position; And a link portion that adjusts the position and angle of the guide portion so that the guide portion moves to the first position.

According to another aspect of the present invention, there is provided an apparatus for inspecting and removing foreign substances in a steam generator, comprising: a fixing unit fixedly installed in a steam generator; a plurality of guide tubes connected to the fixing unit, A guide portion extending to a first position which is a position for inspecting and removing a foreign matter; a guide portion for connecting the guide portion to the fixing portion and for changing the position and angle of the guide portion to move the guide portion to the first position; And a checking and removing tool which is inserted into the guide portion and guided to the first position inside the steam generator by the guide of the guide portion.

It is possible to firmly fix the apparatus to an arbitrary position in the steam generator and to adjust the angle and position of the apparatus using the apparatus for inspecting and removing foreign substances of the steam generator according to the present invention and the apparatus for inspecting and removing foreign substances So that the lower end portion of the guide portion can be accurately brought close to the inspection and removal position.

Therefore, according to the present invention, a foreign substance inspection and removal tool that enters through the inside of the guide portion can approach the inspection and removal position safely and accurately without interference of obstacles in the steam generator.

Therefore, according to the present invention, it is possible to solve the problem that the conventional foreign matter inspection and removal tool is sandwiched between the internal structures of the steam generator and the difficulty of entering the correct position due to the resistance of the water introduced, Can be provided.

1 is a perspective view showing a general steam generator.
FIG. 2 is a view illustrating a state where a guide for inspecting and removing a foreign substance of a steam generator according to the present invention is installed on an upper portion of a steam generator.
3 is a perspective view showing a foreign matter inspection and removal tool guide device and a removal device of the steam generator according to the present invention.
FIG. 4 is a perspective view showing a foreign matter inspection and removal tool guide device of the steam generator of FIG. 3;
5 is a view showing a state in which the angle of the fixed arm shown in FIG. 4 is adjusted.
6 is an exploded perspective view of the foreign substance inspection and removal tool guiding device of the steam generator shown in FIG. 4; FIG.
7 (a) is an exploded perspective view of a guide portion applied to the present invention, and Fig. 7 (b) is a partial cross-sectional perspective view of a guide portion.
8 is a partially enlarged cross-sectional view showing a cross section inside the steam generator.

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

First, the embodiments described below are embodiments suitable for understanding the technical features of the foreign substance inspection and removal tool guide device and the foreign matter inspection and removal device of the present invention. However, the technical features of the present invention are not limited by the embodiments to which the present invention is applied or explained in the following embodiments, and various modifications are possible within the technical scope of the present invention.

The apparatus for inspecting and removing a foreign object of a steam generator according to the present invention 100 is based on inspecting and removing foreign matter from inside a steam generator 10, particularly a heat transfer tube. FIG. 1 shows a steam generator 10, and FIG. 2 shows a state in which a foreign substance inspecting and removing tool guide device 100 according to the present invention is installed on a steam generator 10. 8 is a partially enlarged sectional view showing a section of the heat transfer tube 13 inside the steam generator 10. As shown in Fig.

1, 2 and 8, the steam generator 10 is provided with a cylindrical shroud 12 in a cylindrical pressure vessel or shell 11 (hereinafter referred to as a cell). A bundle of tubes 13 may be disposed in the shroud 12 and the tube 13 may be vertically supported by a support 14 (Eggcrate tube support, for example). Here, the heat transfer tubes 13 are vertically installed in a U-shape, and can be made of about several thousand or more bundles. The stopper portions 14 are provided in a lattice shape and are circular or semicircular in shape, and a plurality of vertically spaced apart portions can be arranged (refer to Figs. 1 and 8).

A steam dryer 15 and a moisture separator 16 are provided on the upper side of the cell 11 and the moisture separator 16 can be supported by a support beam 19. [ A manway may be provided in the cell 11 and a manhole 18 may be provided between the moisture separators 16 to communicate with the bottom.

The guide device 100 for inspecting and removing foreign objects of the steam generator according to the present invention is fixed to the inner wall surface of the steam generator 10, that is, the inner wall surface on the upper side of the shroud 12 Can be inserted into the bundle of heat transfer tubes 13 by extending downward. Here, the guide portion 600 can extend to the lowermost portion of the bundle of the heat transfer tubes 13. [

Specifically, at the time of installation of the present invention, the operator can access the inside of the steam generator 10 through the work passage 17, and can enter the work area through the manhole 18. For example, the operator can install the present invention in the support beam 19. At this time, in order to reduce the radioactivity inside the steam generator 10, the lower part of the work area, that is, the lower part where the worker is located, can be appended.

The inspection area inside the steam generator 10 using the present invention may be a space between the plurality of heat transfer tubes 13 and the tube supporting part. Specifically, it may be an empty space between the shroud 12 of the steam generator 10, the outer periphery of the heat transfer pipe 13, and an empty space without the heat transfer pipe 13. [ The foreign matter inspection tool or the removal tool can be caused to enter the above-mentioned area by using the present invention.

However, the upper structure inside the steam generator 10 to which the present invention is applied and the installation method of the present invention are not limited to those described above, and various structures and systems may be applied if the present invention can be installed inside the steam generator 10 . In addition, the inspection area inside the steam generator 10 is not limited to the above example, and various inspection areas can be applied as long as the inspection area is accessible through the present invention.

2 to 6, the apparatus 100 for guiding inspecting and removing foreign matter of a steam generator according to an embodiment of the present invention includes a fixing unit 200 and a guide unit 600, (300).

The fixing portion 200 can be fixedly mounted inside the steam generator 10. [ For example, the fixing part 200 may be attached and fixed to the inner wall surface of the shroud 12.

The guide unit 600 is connected to the fixing unit 200 so that the foreign matter inspection and removal tool 700 is inserted and guided to a first position where the foreign matter is inspected and removed and a plurality of guide tubes 610 are vertically (H) and may extend to the first position. The first position is defined as a position where inspection and removal of foreign matter are required in the steam generator 10, and is not limited to the area between the heat transfer tubes 13, for example.

The link unit 300 can adjust the position and angle of the guide unit 600 so that the guide unit 600 is connected to the fixing unit 200 and the guide unit 600 is moved to the first position. Specifically, the link portion 300 is connected between the fixing portion 200 and the guide portion 600 and is provided to adjust the position and the angle so that the guide portion 600, particularly, the lower end portion of the guide portion 600, 1 position.

As described above, by using the apparatus 100 for guiding the foreign substance inspection and removal tool of the steam generator according to the present invention, the apparatus can be firmly fixed to an arbitrary position inside the steam generator 10 by the fixing unit 200, It is possible to accurately approach the end portion of the guide portion 600 to the inspection and removal position while adjusting the angle and position by the link portion 300.

Accordingly, the foreign substance inspection and removal tool 700 entering through the inside of the guide part 600 can approach the first position safely and accurately without interference of obstacles inside the steam generator 10. Therefore, according to the present invention, there is solved the problem that the conventional foreign matter inspection and removal tool 700 is sandwiched between the internal structures of the steam generator 10 and the difficulty of entering the correct position due to the resistance of the water introduced, ) It is possible to secure the soundness of facilities and economical effect.

The fixing part 200 may include a pair of fixed arms 210, a coupling part 220, a magnet member 230, and a connecting member 250.

The fixed arms 210 may be formed long in one direction and may be provided in a pair. Specifically, the pair of fixed arms 210 may be arranged in parallel in the vertical direction, but the present invention is not limited thereto.

The connecting member 250 can connect the pair of fixing arms 210. Specifically, the connecting member 250 can be connected to a pair of fixed arms 210 installed horizontally and arranged vertically.

The coupling member 220 can be coupled to the end of the fixed arm 210. The magnet member 230 may be mounted on the coupling member 220 and attached to the inner wall surface of the steam generator 10.

For example, the coupling member 220 may be disposed at the end of the pair of fixing arms 210 to thereby form four coupling members 220. The coupling member 220 may include four magnet members 230 corresponding to the coupling members 220 . However, the numbers of the coupling member 220 and the magnet member 230 are not limited to those described above. The coupling member 220 may be formed with a coupling groove into which the end of the fixing arm 210 is inserted and a coupling groove into which a part of the magnet member 230 is inserted, and the fixing arm 210 and the magnet member 230, Can be coupled to the coupling hole 220 by the coupling pin P while being inserted into the coupling groove of the coupling hole 220, respectively.

Specifically, the magnet member 230 may be provided with a strong magnet and may be firmly fixed to an arbitrary position of the inner wall surface of the shroud 12. [ Thus, it is possible to prevent the guiding device from shaking at the time of inspection and removal.

The connection member 250 may include a connection arm 251 and a connection port 252.

The connection arm 251 may be provided horizontally between the pair of fixed arms 210. The connection hole 252 may be formed at both ends of the connection arm 251 and may have a through hole 253 through which the fixing arm 210 is inserted. The link portion 300 may be connected to the fixing portion 200 through the connecting member 250.

3, 6, and 7, the guide unit 600 may be connected to the fixing unit 200 through the link unit 300, and a plurality of guide tubes 610 may be connected And may be provided in the form of a tube having a hollow.

Here, the number of connection of the guide tube 610 is determined according to the first position of the guide part 600, and the length thereof can be varied. Specifically, the first position may be the upper portion of the bundle of heat transfer tubes 13 or the lower portion thereof. Since the position of the lower end of the guide part 600 changes according to the first position, the length of the guide part 600 can be varied. At this time, the length of the guide part 600 can be varied by adjusting the number of connection of the guide tube 610.

The connection method of the guide tube 610 may be various connection methods as long as the plurality of guide tubes 610 can be connected firmly. For example, as shown in FIG. 7, the guide portion 600 may be fastened to the neighboring guide tube 610 by screwing. At this time, the lowermost guide tube 610 among the plurality of guide tubes 610 may be adjacent to the first position.

For example, referring to FIG. 7A, a first screw thread 611 is formed on the inner circumferential surface of the lower end of the upper guide tube 610a among the neighboring guide tubes 610a and 610b (see FIG. 7) A second screw thread 612 is formed on the outer circumferential surface of the upper end of the guide tube 610b of the guide tube 610b so that the adjacent guide tubes 610a and 610b are engaged with each other by the male and female threads of the first screw thread 611 and the second screw thread 612 Can be connected. In this manner, the plurality of guide tubes 610 can be connected to extend the lowermost guide tube 610 to the first position.

The guide portion 600 may further include a wire hole 613 and a wire member 630.

The wire member 630 may be inserted into the plurality of guide tubes 610 and fixed to the guide tube 610 disposed at the lower end of the plurality of guide tubes 610. The wire hole 613 may be formed through the guide tube 610 so that the wire member 630 is penetrated and fixed to the guide tube 610.

Specifically, the wire hole 613 may pass through at least the lower end guide tube 610 of the plurality of guide tubes 610 so as to penetrate the inside and the outside. The wire member 630 is inserted into the uppermost guide tube 610 and penetrates the entirety of the guide part 600 and can be fixed to the lowermost guide tube 610.

Accordingly, when the inspecting and removing operation is completed, the worker can pull the wire member 630 and safely collect the guide part 600 including the lowermost guide tube 610. Therefore, according to the present invention, the wire member 630 can prevent the guide portion 600 from remaining in the steam generator 10 after the inspection to become foreign matter.

4 and 6, the link unit 300 may include a link member 400 and an extension member 500. [

The link member 400 is rotatably connected to the connection member 250 so that the angle with the connection member 250 can be adjusted. The extending member 500 is rotatably connected to the link member 400 so that the angle formed between the extending member 500 and the link member 400 is adjusted and the guide unit 600 can be mounted.

Specifically, the link member 400 may include a link arm 410, a first link end 420, a first rotation bracket 430, and a first bolt 450. The link member 400 may further include a second link end 460.

The link arm 410 may be elongated in the direction of the extending member 500 from the connecting member 250, and may be provided horizontally, for example. The first link end 420 is provided at the end of the link arm 410 in the direction of the connecting member 250 and has a first screw hole 421 on the upper side and a first pivot groove 422 on the lower side . Here, the first screw hole 421 may be formed to pass through the upper and lower portions, and the first pivot groove 422 may be formed to open downward.

The first rotation bracket 430 includes a connection hole 431 through which the connection member 250 extends horizontally and a first pivot 433 rotatably inserted into the first pivot groove 422 on the upper surface thereof. Can be protruded. Here, the connection hole 431 may be formed with a slit so as to open downward to facilitate insertion of the connection arm 251, and a fastening hole and a fastening bolt may be provided at this portion. The link arm 410 can be rotated with the first link end 420 as a pivot axis (see R2) by inserting the first pivot 433 into the first pivot groove 422. [

The first bolt 450 is inserted and screwed into the first screw hole 421 and penetrates the first link end 420 to be coupled to the first pivot 433, 400 can be varied by varying the angle of the clamping force.

Specifically, the first bolt 450 is threaded through the first screw hole 421 and screwed into the first link end 420 so that the first link end 420, the first rotation bracket 430, The connection arm 251 can be engaged. The link member 400 loosens the first bolt 450 to weaken the fastening force between the connecting arm 251 and the first rotating bracket 430 and then rotates the connecting arm 251 The angle of the fixed arm 210 connected by the arm 251 can be changed. Accordingly, the present invention can appropriately cope with the case where the angle of the shroud wall surface varies depending on the type of the steam generator 10 by adjusting the angle of the fixing portion 200.

The link member 400 rotates the link arm 410 (see R2) after loosening the first bolt 450 to weaken the fastening force between the first link end 420 and the first rotation bracket 430, The angle formed by the link arm 251 and the link arm 410 can be changed.

The second link end 460 may be provided at the end of the link arm 410 facing the extension member 500 and may be formed with a second pivot groove 461 opened upward. Here, the second link end 460 may be integrally formed with the link arm 410. The link member 400 may be connected to the elongated member 500 through the second link end 460.

The extension member 500 may include a second pivot 520, a second rotation bracket 530, an extension arm 510, and a second bolt 550. Further, the elongated member 500 may further include a clamp member 570 and a third bolt 580.

The second pivot 520 may be rotatably inserted into the second pivot groove 461 at the bottom and protrude upwardly of the second link end 460. Specifically, the second pivot 520 is inserted and seated in the second pivot groove 461, and a portion of the upper portion is protruded from the second link end 460 to be inserted into the second rotation bracket 530 .

The second rotation bracket 530 includes a third pivot groove 531 into which the second pivot 520 is inserted and is rotatably connected to the second link end 460. A second screw hole 533 may be provided. The second pivot 520 is inserted between the second rotating bracket 530 and the second link end 460 and the second rotating bracket 530 is inserted through the second pivot 520 into the second link end 460 As shown in Fig.

The extension arm 510 may be horizontally penetrated to the second rotation bracket 530 and may be formed long as a bar. Further, the extension arm 510 can be slidably provided on the second rotation bracket 530 (see S in Fig. 4).

The second bolt 550 can adjust the fastening force of the second link end 460 and the second rotation bracket 530 by rotation so as to vary the angle formed by the extension member 500 and the link member 400 have.

Specifically, the elongated member 500 may be formed by loosening the second bolt 550 to weaken the fastening force between the second link end 460 and the second rotation bracket 530, The pivot 520 can be pivoted around the pivot axis (see R3). The angle formed by the extension member 500 and the link member 400 can be changed.

The extension member 500 can slide the extension arm 510 or adjust the extension arm 510 to the second rotation bracket 530 by adjusting the second bolt 550. [ The position of the guide unit 600 mounted on the end of the extension arm 510 can be adjusted by unscrewing the second bolt 550 and sliding the extension arm 510 against the second rotation bracket 530 See Fig. 4, S). Then, the extension arm 510 can be fixed to the second rotation bracket 530 by tightening the second bolt 550.

The extension arm 510 may be rotatably provided with respect to the second rotation bracket 530 with the longitudinal axis of the extension arm 510 as a rotation axis. The extension member 500 can be rotated by rotating the extension arm 510 with the longitudinal axis of the extension arm 510 as the rotation axis (see R4) by the adjustment of the second bolt 550, And can be fixed to the bracket 530. Accordingly, the installation angle of the guide portion 600 can be adjusted.

The fixing part 200 and the link part 300 are rotated by the first bolt 450 and the second bolt 550 for each of the link parts 300 so that R1, R2, R3, R4 The angle formed by the guide portion 600 with the inner wall surface of the steam generator 10 and the distance between the guide portion 600 and the inner wall surface can be adjusted. Accordingly, the guide portion 600 can be accurately positioned at the first position.

Meanwhile, the extension member 500 may further include a clamp member 570 and a third bolt 580.

The clamp member 570 has a guide hole 571 into which the guide portion 600 is inserted and a third screw hole 573 communicated with the guide hole 571 and penetrating in the direction perpendicular to the guide portion 600 . The third bolt 580 is inserted into the third screw hole 573 and can be detachably attached to the clamp member 570 by the rotation of the guide portion 600. [

Specifically, the clamp member 570 can be bolted to the end of the elongated arm 510, and the guide hole 571 can be vertically penetrated. The clamp member 570 may include an upper part formed with an upper guide hole 571 and a lower part formed with a lower guide hole 571. A third screw hole 573 may be formed between the upper part and the lower part. And an opening that is open to one side may be formed. A fixing block 575 may be inserted between the upper part and the lower part. The fixing block 575 may have a hole at a position corresponding to the guide hole 571 and the guide portion 600 may be passed through the hole of the guide hole 571 and the fixing block 575. The third bolt 580 passes through the third screw hole 573 and presses the fixing block 575 so that the guide portion 600 can be fixed to the clamp member 570. Then, the guide bolt 580 may be loosened to separate the guide portion 600.

Hereinafter, an apparatus for inspecting and removing foreign substances in the steam generator 10 according to another aspect of the present invention will be described with reference to FIG. Hereinafter, a duplicated description of the same configuration as the above configuration will be omitted.

3, the foreign substance inspection and removal apparatus of the steam generator 10 according to the present invention includes a fixing unit 200, a guide unit 600, a link unit 300, and an inspection and removal tool 700 can do.

The fixing portion 200 can be fixedly mounted inside the steam generator 10. [

The guide unit 600 is connected to the fixing unit 200 and has a plurality of guide tubes 610 connected to each other in the vertical direction so as to have a hollow tube shape and extend to a first position, .

The link unit 300 may adjust the position and angle of the guide unit 600 to connect the guide unit 600 to the fixing unit 200 and move the guide unit 600 to the first position.

The inspection and removal tool 700 may be inserted into the guide portion 600 and guided to the first position inside the steam generator 10 by the guide portion 600.

The apparatus for inspecting and removing foreign objects and the apparatus for inspecting and removing foreign objects according to the present invention can firmly fix the apparatus to an arbitrary position in the steam generator, The lower end portion of the guide portion can be accurately brought close to the inspection and removal position.

Therefore, according to the present invention, a foreign substance inspection and removal tool that enters through the inside of the guide portion can approach the inspection and removal position safely and accurately without interference of obstacles in the steam generator. Therefore, according to the present invention, it is possible to solve the problem that the conventional foreign matter inspection and removal tool is sandwiched between the internal structures of the steam generator and the difficulty of entering the correct position due to the resistance of the water introduced, Can be provided.

While the invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And various modifications and changes may be made without departing from the scope of the present invention.

10: steam generator 11: cell
12: Shroud 13: Heat transfer tube bundle
14: stationary part 15: steam dryer
16: wet separator 17: work passage
100: Inspection and removal tool for foreign substances in steam generator
200: fixing part 210: fixed arm
220: coupling part 230: magnet member
250: connecting member 251: connecting arm
252: Connector 253: Through hole
300: link unit 400: link member
410: link arm 420: first link end
421: first screw hole 422: first pivot groove
430: first rotation bracket 431: connection hole
433: first pivot 450: first bolt
460: second link end 461: second pivot groove
500: extension member 510: extension arm
520: second pivot 530: second rotation bracket
531: third pivot groove 533: second screw hole
550: second bolt 570: clamp member
571: Guide hole 573: Third screw hole
575: Fixing block 580: Third bolt
600: guide portion 610: guide tube
610a, 610b: neighboring guide tube
611: first thread 612: second thread
613: wire hole 630: wire member
700: Inspection and removal tools

Claims (15)

A fixing unit fixedly mounted inside the steam generator;
A plurality of guide tubes connected in a vertical direction so as to be guided to a first position where the foreign matter inspection and removal tool is inserted and inspected and removed to a first position, A guide portion extending to the position; And
And a link portion connecting the guide portion to the fixing portion and adjusting the position and angle of the guide portion to move the guide portion to the first position,
The fixing unit includes:
A pair of fixed arms formed to be long in one direction;
A coupling member coupled to an end of the fixed arm;
A magnet member mounted on the coupling hole and attached to an inner wall surface of the steam generator; And
And a connecting member for connecting the pair of fixing arms to each other. The method according to claim 1,
Wherein the guide unit determines the number of connection of the guide tubes according to the first position and the length thereof is variable. delete The method according to claim 1,
The connecting member includes:
A connecting arm provided between the pair of fixed arms; And
And a connection hole formed at both ends of the connection arm and having through holes through which the fixing arms are inserted. The method according to claim 1,
Wherein the guide portion is engaged with the neighboring guide tube by screw engagement and the lowermost guide tube extends adjacent to the first position. 6. The method of claim 5,
Wherein the guide portion further comprises a wire member inserted into the plurality of guide tubes and fixed to the guide tube disposed at a lower end portion of the plurality of guide tubes. The method according to claim 6,
Wherein the guide portion further includes a wire hole formed in the guide tube so that the wire member passes through the guide tube and is fixed to the guide tube. The method according to claim 1,
Wherein,
A link member rotatably connected to the linking member to adjust an angle with the linking member; And
And an extension member rotatably connected to the link member to adjust an angle between the link member and the guide member and to which the guide unit is mounted. 9. The method of claim 8,
The link member
Link arm;
A first link end provided at an end of the link arm in the direction of the connection member, the first link end having a first screw hole on an upper side and the first pivot groove on a lower side;
A first rotation bracket having a connection hole through which the connection member horizontally passes, the first rotation bracket being protruded on a top surface thereof, the first pivot being rotatably inserted into the first pivot groove; And
The first screw hole being inserted into and screwed into the first screw hole and being coupled to the first pivot through the first link end and adjusting the tightening force by rotation so that the angle formed by the linking member and the link member is variable, A bolt-inspecting and removing tool guide for foreign matter in a steam generator. 10. The method of claim 9,
Wherein the link member further comprises a second link end provided at an end portion of the link arm facing the extending member and having a second pivot groove opened toward the upper side, . 11. The method of claim 10,
Wherein,
A second pivot rotatably inserted into the second pivot groove and projecting upwardly of the second link end;
A second rotation bracket provided with a third pivot for receiving the second pivot and rotatably connected to the second link end and having a second screw hole on the upper side;
An extension arm horizontally penetrating the second rotation bracket; And
And a second bolt for adjusting a fastening force of the second link end and the second rotation bracket by rotation so as to vary an angle formed by the extension member and the link member. Device. 12. The method of claim 11,
Wherein the extension arm is slidably provided on the second rotation bracket,
The extension member is configured to slide the extension arm by adjusting the second bolt so that the distance between the guide portion and the inner wall surface of the steam generator is adjusted or to fix the extension arm to the second rotation bracket A tool for guiding and checking foreign substances in a steam generator. 12. The method of claim 11,
Wherein the extension arm is rotatably provided with respect to the second rotation bracket with a central axis in the longitudinal direction of the extension arm as a rotation axis,
The extension member may be rotated by adjusting the second bolt so as to adjust an installation angle of the guide portion with the longitudinal axis of the elongate arm as a rotational axis or fixed to the second rotational bracket A tool for guiding and checking foreign substances in a steam generator. 13. The method of claim 12,
Wherein,
A clamping member having a guide hole into which the guide portion is inserted and a third screw hole communicating with the guide hole and penetrating in a direction perpendicular to the guide portion; And
And a third bolt inserted into the third screw hole and detachably attaching the guide portion to the clamp member by rotation. A fixing unit fixedly mounted inside the steam generator;
A guide portion connected to the fixing portion and having a plurality of guide tubes connected to each other in a vertical direction and having a hollow shape and extending to a first position which is an inspection and removal position of foreign matter;
A link portion connecting the guide portion to the fixing portion and adjusting the position and angle of the guide portion to move the guide portion to the first position; And
And an inspection and removal tool inserted into the guide portion and guided to the first position inside the steam generator by the guide portion,
The fixing unit includes:
A pair of fixed arms formed to be long in one direction;
A coupling member coupled to an end of the fixed arm;
A magnet member mounted on the coupling hole and attached to an inner wall surface of the steam generator; And
And a connecting member for connecting the pair of fixing arms to each other.

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