KR102597635B1 - Inspecting device for steam generator - Google Patents

Abstract

The present invention relates to a steam generator inspection device. The steam generator inspection device according to the present invention includes an instrument assembly including an instrument module provided to inspect the inside of the steam generator, and is installed in a handhole of the steam generator, and the instrument A tilting assembly is provided to guide the insertion of the assembly into the steam generator and to adjust the angle of the mechanism assembly.

Description

Steam generator inspection device {INSPECTING DEVICE FOR STEAM GENERATOR}

The present invention relates to a steam generator inspection device.

Generally, in nuclear power plants, steam generators generate the steam needed to produce electricity from steam turbines and generators. Inside such a steam generator, a plurality of heat pipes in the form of a bundle may be disposed. The heat transfer pipe performs heat exchange between the primary tree containing radioactivity and the secondary tree that turns the turbine, and has the function of separating the primary tree from the secondary tree.

To ensure stable operation of a nuclear power plant, inspections can be made to remove foreign substances from the space inside the steam generator and the bundle of heat pipes on the secondary side of the steam generator. For this purpose, a device is installed to observe the interior through the hand hole of the steam generator and remove foreign substances.

However, the prior art did not include a structure for tilting the equipment frequently used in inspection work, making it difficult to arbitrarily adjust the inspection angle of the endoscope device and the angle of the foreign matter removal device or to maintain the adjusted angle.

In addition, according to the prior art, there was a problem that it took a long time to install the instrument for inspection inside the steam generator, the inspection time, and the time to remove the instrument from the steam generator.

Therefore, there is a need for a device that can adjust the tilting angle of the inspection and removal mechanism and is easy to install.

The present invention was made to solve the above-described problems. The purpose of the present invention is to provide a steam generator inspection device for increasing the efficiency of inspection work by adjusting the incoming or outgoing angle of the instrument assembly including the endoscope and camera. Do it as

In order to achieve the above object, the steam generator inspection device according to the present invention is installed in a handhole of the steam generator and an instrument assembly including an instrument module provided to inspect the inside of the steam generator, and the instrument assembly is installed in the steam generator. A tilting assembly is provided to guide insertion into the interior of the generator and to adjust the angle of the instrument assembly.

The instrument assembly includes an endoscope for inspecting the inside of the steam generator, an endoscope module including a rail guide portion for guiding the insertion of the endoscope into the steam generator, a camera for photographing the inside of the steam generator, and It may include a camera module including a camera wire connected to the camera and a camera guide tube provided to surround the camera wire.

The rail guide part includes a guide body, a guide slot formed in the guide body for insertion of the endoscope and extending along the extension direction of the guide body, and bent and extended at an end of the guide body to allow the endoscope to be withdrawn. It may include a draw-out portion.

It may include a removal tool module including a foreign matter removal tool provided to remove foreign matter inside the steam generator, a tool wire connected to the foreign matter removal tool, and a tool guide tube provided to surround the tool wire. .

The tilting assembly includes a mounting unit mounted on the steam generator and including a hollow cylindrical assembly portion, and a tilting unit installed through the hollow portion of the assembly portion and into which the mechanism assembly is inserted, The assembly unit includes a plurality of tilting slots formed along a circumferential direction about the central axis of the assembly unit, and the tilting unit is provided to be tiltable with respect to the central axis to adjust the angle of the mechanism assembly, and a plurality of tilting slots are provided to adjust the angle of the mechanism assembly. It may include a position fixing protrusion provided to be inserted into any one of the tilting slots.

The tilting unit includes a tilting body portion having a tilting body through which the mechanism assembly passes, and a locking member coupled to the position fixing protrusion to fix the tilting angle of the tilting main portion, and the position fixing protrusion is configured to: It may protrude in the radial direction on the outer surface of the tilting body.

The tilting body portion may include a rail guide hole formed in the tilting body to allow the rail guide portion to pass through and extending in the direction of the central axis.

The tilting body portion may further include a camera guide slot formed to accommodate at least a portion of the outer surface of the camera guide tube.

The tilting body portion may further include a tool guide slot provided to accommodate at least a portion of the outer surface of the tool guide tube.

Each of the camera guide slot and the tool guide slot is formed with an opening opening in a direction opposite to the direction toward the central axis,

The opening may be sized to prevent the camera module and the removal tool module from being separated.

The assembly unit includes an assembly body having a hollow structure, a movable guide hole formed through the assembly body in communication with the tilting slot and extending in a circumferential direction with respect to the central axis, and a movable guide hole in communication with the movable guide hole. It may further include an insertion hole penetrating the body and extending in a direction parallel to the central axis.

The assembly part may be formed to enable the position fixing protrusion to be inserted into the insertion hole, move along the movement guide hole, and be inserted into any one of the plurality of tilting slots.

The mounting unit includes a flange portion that extends vertically from one end of the assembly portion in the central axis direction and is fixed to the outer surface of the steam generator, and a fixing member provided to secure the flange portion to the outer surface of the steam generator. More may be included.

The flange portion may include an angle display scale formed along the circumferential direction to display the angle of the position where the tilting slot is formed.

The flange portion includes a flange body and a plurality of fixing holes formed through the flange body so that the fixing member is fastened thereto, and the plurality of fixing holes are spaced apart from the flange portion at a predetermined angle along the circumferential direction. can be formed.

The fixing member may be provided with a fixing bolt that penetrates the steam generator and the fixing hole and is screwed.

The mounting unit is formed in a ring shape and is provided to surround an outer surface of the tilting unit, and may further include a bush member coupled to the inner surface of the assembly part.

In this way, by using the steam generator inspection device according to the embodiment of the present invention, the incoming or outgoing angle of the instrument assembly including the endoscope and camera can be adjusted, thereby increasing the efficiency of the inspection work.

Figure 1 is a diagram showing a state in which a steam generator inspection device according to an embodiment of the present invention is installed in a steam generator.
Figure 2 is a perspective view showing a steam generator inspection device according to an embodiment of the present invention.
Figure 3 is an exploded perspective view showing a tilting assembly according to an embodiment of the present invention.
Figure 4 is a perspective view showing an instrument assembly according to an embodiment of the present invention.
Figure 5a is a side view showing a steam generator inspection device according to an embodiment of the present invention, and is a diagram showing the process of assembling the tilting unit to the mounting unit.
FIG. 5B is a diagram showing a state in which the position fixing protrusion in FIG. 5A is inserted into the moving guide hole.
Figure 6a is a cross-sectional view showing a steam generator inspection device according to an embodiment of the present invention.
FIG. 6B is a diagram showing the tilting unit in FIG. 6A in a tilted state.
Figure 7a is a side view showing a steam generator inspection device according to an embodiment of the present invention.
FIG. 7B is a diagram showing the tilting unit in FIG. 7A in a tilted state.

Hereinafter, embodiments of the present invention will be described in detail according to the attached drawings.

First, the embodiments described below are suitable for understanding the technical features of the steam generator inspection device of the present invention. However, the technical features of the present invention are not limited to the embodiments described or applied to the embodiments described below, and various modifications and implementations are possible within the technical scope of the present invention.

Figure 1 is a diagram showing a state in which a steam generator inspection device according to an embodiment of the present invention is installed in a steam generator, Figure 2 is a perspective view showing a steam generator inspection device according to an embodiment of the present invention, and Figure 3 is a view showing the steam generator inspection device according to an embodiment of the present invention. It is an exploded perspective view showing a tilting assembly according to an embodiment of the invention, and Figure 4 is a perspective view showing a mechanism assembly according to an embodiment of the present invention.

Figure 5a is a side view showing a steam generator inspection device according to an embodiment of the present invention, showing the process of assembling the tilting unit to the mounting unit, and Figure 5b shows the position fixing protrusion in Figure 5a being inserted into the moving guide hole. Figure 6a is a cross-sectional view showing a steam generator inspection device according to an embodiment of the present invention, Figure 6b is a diagram showing the tilting unit in Figure 6a, and Figure 7a is a view showing the tilted state of the tilting unit in Figure 6a. It is a side view showing a steam generator inspection device according to an embodiment of the invention, and Figure 7b is a diagram showing the tilting unit in Figure 7a in a tilted state.

The steam generator inspection device 10 according to an embodiment of the present invention is, for example, a device for inspecting the inside of a steam generator 1 installed in a nuclear power plant. An annular space is formed between the shell (2) and the heat pipe (3) of the steam generator (1), and the steam generator inspection device (10) is inserted into the annular space through the hand hole (5) formed in the steam generator (1). It is possible to inspect foreign substances such as sludge or metal fragments in the heat pipe (3) and the annular space, or the twisted state of various cables.

Referring to FIGS. 1 to 7B , the steam generator inspection device 10 according to an embodiment of the present invention includes a mechanism assembly 100 and a tilting assembly 200.

The instrument assembly 100 includes an instrument module provided to inspect the interior of the steam generator 1. Specifically, the instrument module is an instrument for inspecting the inside of the steam generator 1 and may include an endoscope module 110 and a camera module 120.

The endoscope module 110 may include an endoscope 111 that inspects the inside of the steam generator 1, and a rail guide unit 113 that guides the insertion of the endoscope 111 into the steam generator 1. there is. And the camera module 120 includes a camera 121 for photographing the inside of the steam generator 1, a camera wire 123 connected to the camera 121, and a camera guide provided to surround the camera wire 123. It may include a tube 125. The camera module 120 may further include a light 122 that provides light when taking pictures by the camera 121.

For example, the endoscope 111 is made of a flexible material and may be formed into a band shape extending in one direction. An endoscope camera is provided at the end so that the inside of the steam generator (1) can be observed.

The rail guide portion 113 includes a guide body 114, a guide slot 115 formed in the guide body 114 so that the endoscope 111 is inserted, and extending along the extension direction of the guide body 114, and a guide body 115. It may include a draw-out portion 116 that is bent and extended at the end of 114 and is provided to allow the endoscope 111 to be pulled out.

For example, when the direction perpendicular to the direction of extension of the rail guide unit 113 is referred to as the vertical direction, the size of the vertical cross-section of the guide slot 115 will be larger than the size of the vertical cross-section of the endoscope 111. You can. And the guide slot 115 may have an opening formed in its vertical cross section.

Also, for example, a plurality of guide slots 115 may be provided. The plurality of guide slots 115 may be provided to be spaced apart in a direction perpendicular to the extension direction of the rail guide portion 113. With this structure, the guide slot 115 can guide the endoscope 111 to move straight into the steam generator 1.

A camera wire 123 may be inserted into the camera guide tube 125, and a camera 121 may be provided at the end of the camera wire 123. Here, the camera wire 123 may be provided to be movable along the extending direction inside the camera guide tube 125.

For example, the camera 121 can be inserted into the steam generator 1 to inspect the inside of the annular space, and the endoscope 111 can be inserted into the gap of the heat pipe 3 to take images. The camera 121 and the endoscope 111 can be connected to an image processing device (not shown), and the operator can inspect the inside of the steam generator 1 through the images captured by the camera 121 and the endoscope 111. there is.

Additionally, the instrument assembly 100 may further include a removal tool module 130. The removal tool module 130 includes a foreign matter removal tool 131 provided to remove foreign matter inside the steam generator 1, a tool wire 132 connected to the foreign matter removal tool 131, and a tool wire 132. ) may include a tool guide tube 133 provided to surround the tool.

The foreign matter removal tool 131 may be inserted into the steam generator 1 through the tool guide tube 133 along with the tool wire 132. The foreign matter removal tool 131 is provided to remove foreign matter remaining on the lower surface or gap of the heat pipe 3, and a known method for removing foreign matter can be applied. The tool wire 132 may have one end connected to the foreign matter removal tool 131 and the other end connected to a control device outside the steam generator 1.

The tool guide tube 133 serves to guide the foreign matter removal tool 131 inserted inside the steam generator (1), and one end penetrates the hand hole (5) into the steam generator (1). It is inserted, and the other end may be exposed to the inside of the steam generator (1).

The tilting assembly 200 is installed in the hand hole 5 of the steam generator 1, guides insertion of the mechanism assembly 100 into the interior of the steam generator 1, and adjusts the angle of the mechanism assembly 100. It is equipped to do so.

The tilting assembly 200 is installed in the hand hole 5 and may serve to guide the insertion of the instrument assembly 100 and at the same time adjust the angle of the instrument assembly 100. Specifically, the tilting assembly 200 may be provided with a tilting structure for rotating a predetermined angle based on the central axis C of the tilting assembly 200. Here, the center of the hand hole 5 may be placed on the central axis C of the tilting assembly 200.

The mechanism assembly 100 can slide toward the inside of the steam generator 1 while inserted into the tilting assembly 200 and rotate together with the tilting assembly 200 at the same time. The tilting structure of the tilting assembly 200 can be applied in various ways to rotate at a predetermined angle with respect to the central axis C.

For example, the tilting assembly 200 is installed through a mounting unit 400 that is mounted on the steam generator 1 and includes a hollow cylindrical assembly portion 410, and penetrates the hollow of the assembly portion 410. and may include a tilting unit 300 into which the instrument assembly 100 is inserted.

The assembly unit 410 may include a plurality of tilting slots 417 formed along the circumferential direction (R) around the central axis (C) of the assembly unit 410. Additionally, the tilting unit 300 is provided to be tiltable about the central axis C and may include a position fixing protrusion 313 to be inserted into one of the plurality of tilting slots 417.

Specifically, the mounting unit 400 is fixed to the outer surface of the steam generator 1, and the tilting unit 300 can be inserted into the assembly portion 410 of the mounting unit 400. Here, the central axis (C) of the assembly unit 410 is the same as the central axis (C) of the entire tilting assembly 200. The tilting slot 417 may be formed in a portion of the circumferential area of the assembly portion 410.

The tilting unit 300 may be installed inside the assembly unit 410 to be rotatable clockwise or counterclockwise about the central axis C. The position fixing protrusion 313 may be provided to protrude in the radial direction about the central axis C and be caught in any one of the plurality of tilting slots 417. When the position fixing protrusion 313 is inserted into the tilting slot 417 while the tilting unit 300 is rotating, the rotation angle of the tilting unit 300 may be fixed.

In this way, by using the steam generator inspection device 10 according to an embodiment of the present invention, the incoming or outgoing angle of the instrument assembly 100 including the endoscope 111 and the camera 121 can be adjusted, thereby allowing inspection. Work efficiency can be increased.

Accordingly, by using the embodiment of the present invention, equipment for inspecting the inside of the steam generator 1 can be easily installed and removed, and the inside of the steam generator 1 can be observed effectively.

The tilting unit 300 may include a tilting body portion 310 and a locking member 330.

The tilting body 310 may include a tilting body 311, a position fixing protrusion 313, a rail guide hole 312, and a camera guide slot 315. Additionally, the tilting body portion 310 may further include a tool guide slot 316.

The tilting body 311 forms the body of the tilting main body 310 and may be provided to allow the mechanism assembly 100 to penetrate therethrough. And the position fixing protrusion 313 may be formed to protrude in the radial direction on the outer surface of the tilting body 311.

The rail guide hole 312 may be formed in the tilting body 311 to allow the rail guide portion 113 to pass through and may be formed to extend in the central axis direction (A).

Specifically, the rail guide portion 113 can be inserted into the rail guide hole 312 to enable sliding movement. For example, the vertical cross-section of the rail guide hole 312 (based on the central axis C) corresponds to the vertical cross-section of the rail guide portion 113, but may be formed with a loose fit tolerance. As a result, when the rail guide unit 113 moves along the rail guide hole 312, it does not rotate around the central axis C and can be maintained at a preset angle.

The camera guide slot 315 may be formed to accommodate at least a portion of the outer surface of the camera guide tube 125. The camera guide tube 125 may be inserted into the camera guide slot 315 and guided when entering or withdrawing from the inside of the steam generator 1.

For example, the camera guide slot 315 may have an opening that opens in a direction opposite to the direction toward the central axis C of the assembly unit 410. And the size of the opening can be formed to prevent the camera module 120 from being separated. The camera guide tube 125 can slide smoothly due to the opening without being separated from the camera guide slot 315 due to the size of the opening.

The tool guide slot 316 may be provided to accommodate at least a portion of the outer surface of the tool guide tube 133. The tool guide tube 133 may be inserted into the tool guide slot 316 and guided when entering or withdrawing the steam generator 1 from the inside.

For example, the tool guide slot 316 may have an opening that opens in a direction opposite to the direction toward the central axis C of the assembly unit 410. And the size of the opening can be formed to prevent the removal tool module 130 from being separated. The tool guide tube 133 can slide smoothly due to the opening without being separated from the tool guide slot 316 due to the size of the opening.

The locking member 330 may be coupled to the position fixing protrusion 313 to fix the tilting angle of the tilting body portion 310.

For example, the locking member 330 may be screwed to the position fixing protrusion 313. For example, the locking member 330 may include a handle screwed to the position fixing protrusion 313. The tilting body 310 can be tilted by unscrewing the locking member 330, and the position of the tilting body 310 can be fixed by screwing the locking member 330 in the tilted position.

Here, the position of the tilting body 310 can be fixed by screwing with the locking member 330 while the position fixing protrusion 313 is inserted into any one of the tilting slots 417. However, it is not limited to this, and the position of the tilting body portion 310 may be fixed by screwing with the locking member 330 at a position where the position fixing protrusion 313 is not inserted into the tilting slot 417.

The assembly unit 410 may further include an assembly body 411, a movement guide hole 415, and an insertion hole 413.

The assembled body 411 may be formed with a hollow penetrating in the central axis direction (A).

The movement guide hole 415 is formed through the assembly body 411 in communication with the tilting slot 417 and may extend along the circumferential direction with respect to the central axis C. Here, the movement guide hole 415 is formed through the inside and outside of the assembly body 411 and may be formed in a portion of the circumferential area.

The insertion hole 413 may penetrate the assembly body 411 in communication with the movement guide hole 415 and extend in a direction parallel to the central axis (C). The insertion hole 413 is a part for allowing the position fixing protrusion 313 to enter the movable guide hole 415, and can communicate between one end of the assembly body 411 and the movable guide hole 415.

By this configuration, the assembly part 410 is configured such that the position fixing protrusion 313 is inserted into the insertion hole 413, moves along the movement guide hole 415, and is inserted into any one of the plurality of tilting slots 417. It can be formed to make this possible. The rotation angle of the mechanism assembly 100 and the tilting unit 300 can be adjusted by changing the position of the position fixing protrusion 313 between the plurality of tilting slots 417.

The mounting unit 400 includes a flange portion 430 that extends vertically from one end of the assembly portion 410 in the central axis direction (A) and is fixed to the outer surface of the steam generator 1, and a flange portion 430. It may further include a fixing member 450 provided to fix to the outer surface of the steam generator (1).

For example, the flange portion 430 is provided flat so that it can contact the outer surface of the steam generator (1).

Additionally, the flange portion 430 may include an angle display scale 433 formed along the circumferential direction to display the angle of the position where the tilting slot 417 is formed.

Specifically, among both sides of the flange portion 430, an angle display scale 433 may be formed on the side opposite to the direction toward the steam generator 1, that is, the side toward the assembly portion 410. In addition, the angle display scales 433 are formed at equal intervals at positions corresponding to the tilting slots 417, allowing the operator to recognize the rotation angle of each tilting slot 417.

More specifically, the flange portion 430 may include a plurality of fixing holes 432 formed through the flange body 431 so that the flange body 431 and the fixing member 450 are fastened to each other. Additionally, a plurality of fixing holes 432 may be formed on the flange portion 430 to be spaced apart at a predetermined angle along the circumferential direction.

For example, the flange portion 430 may be formed in a square shape, and the fixing hole 432 may penetrate each corner of the flange portion 430. However, the shape of the flange portion 430 and the location of the fixing hole 432 are not limited to this.

The fixing member 450 may be provided as a fixing bolt that penetrates the steam generator 1 and the fixing hole 432 and is screwed. For example, a bolt hole may be formed in the steam generator 1, and the fixing hole 432 may be formed at a position corresponding to the bolt hole. The fixing bolt can be fastened to the steam generator (1) by sequentially passing through the fixing hole 432 and the bolt hole. However, the type and connection method of the fixing member 450 are not limited to this.

For example, the mounting unit 400 may further include a bush member 420. The bush member 420 is formed in a ring shape and is provided to surround the outer surface of the tilting unit 300, and may be coupled to the inner surface of the assembly unit 410.

The mounting unit 400 further includes a bush member 420 between the tilting unit 300 and thereby absorbs the assembly tolerance between the outer surface of the tilting unit 300 and the inner surface of the mounting unit 400 to improve assembly. It can be improved.

In this way, by using the steam generator inspection device according to the embodiment of the present invention, the incoming or outgoing angle of the instrument assembly including the endoscope and camera can be adjusted, thereby increasing the efficiency of the inspection work.

Accordingly, by using the embodiment of the present invention, equipment for inspecting the inside of the steam generator can be easily installed and removed, and the inside of the steam generator can be observed effectively.

Above, specific embodiments of the present invention have been described in detail, but the spirit and scope of the present invention are not limited to these specific embodiments, and those skilled in the art in the technical field to which the present invention pertains will recognize the patent claims as described in the claims. Various modifications and variations are possible without changing the gist of the present invention.

1: Steam generator
2: shell
3: Heat pipe
5: Hand hole
10: Steam generator inspection device
100: instrument assembly
110: Endoscope module
11:1 Endoscopy
113: Rail guide part
114: Guide body
115: Information slot
116: Drawout unit
120: Camera module
121: Camera
122: lighting
123: Camera wire
125: Camera guide tube
130: Removal tool module
131: Foreign matter removal tool
132: Tool wire
133: Tool guide tube
200: Tilting assembly
300: Tilting unit
310: Tilting main body
311: Tilting body
312: Rail guide hole
313: Position fixing protrusion
315: Camera guide slot
316: Tool guide slot
330: Locking member
400: Mounting unit
410: Assembly unit
411: Assembly body
413: Insertion hole
415: Mobile guide hall
417: Tilting slot
420: Bush member
430: Flange part
431: Flange body
432: Fixing hole
433: Angle display scale
450: Fixing member

Claims (17)

An instrument assembly including an instrument module provided to inspect the interior of the steam generator; and
A tilting assembly is installed in the handhole of the steam generator, guides insertion of the instrument assembly into the steam generator, and adjusts the angle of the instrument assembly,
The instrument assembly is,
An endoscope module including an endoscope for inspecting the inside of the steam generator and a rail guide portion for guiding the insertion of the endoscope into the steam generator; and
It includes a camera module that includes a camera for photographing the inside of the steam generator, a camera wire connected to the camera, and a camera guide tube provided to surround the camera wire,
The tilting assembly,
A mounting unit mounted on the steam generator and including a hollow cylindrical assembly part; and
It includes a tilting unit installed through the hollow of the assembly part and into which the mechanism assembly is inserted,
The assembly unit includes a plurality of tilting slots formed along a circumferential direction around the central axis of the assembly unit,
The tilting unit is provided to be tiltable with respect to the central axis to adjust the angle of the mechanism assembly, and includes a position fixing protrusion provided to be inserted into any one of the plurality of tilting slots,
The tilting unit is,
a tilting body portion including a tilting body through which the mechanism assembly passes; and
It includes a locking member coupled to the position fixing protrusion to fix the tilting angle of the tilting body portion,
A steam generator inspection device in which the position fixing protrusion protrudes in a radial direction on the outer surface of the tilting body. delete According to paragraph 1,
The rail guide part,
Guide body;
a guide slot formed in the guide body to insert the endoscope and extending along the extension direction of the guide body; and
A steam generator inspection device including a pull-out portion bent and extended at an end of the guide body and provided to pull out the endoscope. According to paragraph 1,
A steam generator comprising a removal tool module including a foreign matter removal tool provided to remove foreign matter inside the steam generator, a tool wire connected to the foreign matter removal tool, and a tool guide tube provided to surround the tool wire. Inspection device. delete delete According to paragraph 1,
The tilting main body,
A steam generator inspection device comprising a rail guide hole formed in the tilting body to allow the rail guide portion to pass through and extending in the direction of the central axis. In clause 7,
The tilting main body,
A steam generator inspection device further comprising a camera guide slot formed to receive at least a portion of an outer surface of the camera guide tube. According to clause 8,
A removal tool module including a foreign matter removal tool provided to remove foreign matter inside the steam generator, a tool wire connected to the foreign matter removal tool, and a tool guide tube provided to surround the tool wire,
The tilting main body,
A steam generator inspection device further comprising a tool guide slot provided to accommodate at least a portion of the outer surface of the tool guide tube. According to clause 9,
Each of the camera guide slot and the tool guide slot,
An opening is formed in a direction opposite to the direction toward the central axis,
A steam generator inspection device in which the opening is sized to prevent the camera module and the removal tool module from being separated. An instrument assembly including an instrument module provided to inspect the interior of the steam generator; and
A tilting assembly is installed in the handhole of the steam generator, guides insertion of the instrument assembly into the steam generator, and adjusts the angle of the instrument assembly,
The tilting assembly,
A mounting unit mounted on the steam generator and including a hollow cylindrical assembly part; and
It includes a tilting unit installed through the hollow of the assembly part and into which the mechanism assembly is inserted,
The assembly unit includes a plurality of tilting slots formed along a circumferential direction around the central axis of the assembly unit,
The tilting unit is provided to be tiltable with respect to the central axis to adjust the angle of the mechanism assembly, and includes a position fixing protrusion provided to be inserted into any one of the plurality of tilting slots,
The assembly part,
An assembled body with a hollow body;
a moving guide hole formed through the assembly body to communicate with the tilting slot and extending in a circumferential direction about the central axis; and
A steam generator inspection device further comprising an insertion hole penetrating the assembly body in communication with the moving guide hole and extending in a direction parallel to the central axis. According to clause 11,
The assembly part,
A steam generator inspection device configured to enable the position fixing protrusion to be inserted into the insertion hole, move along the movement guide hole, and be inserted into any one of the plurality of tilting slots. According to paragraph 1,
The mounting unit is,
A flange portion extending vertically from one end of the assembly portion in the central axis direction and being fixed to an outer surface of the steam generator; and
A steam generator inspection device further comprising a fixing member provided to secure the flange portion to the outer surface of the steam generator. According to clause 13,
The flange part,
A steam generator inspection device comprising an angle display scale formed along the circumferential direction to display the angle of the position where the tilting slot is formed. According to clause 13,
The flange part,
Flange body; and
It includes a plurality of fixing holes formed through the flange body so that the fixing member is fastened,
A steam generator inspection device in which the plurality of fixing holes are formed on the flange part to be spaced apart at a predetermined angle along a circumferential direction. According to clause 15,
The fixing member is,
A steam generator inspection device provided with a fixing bolt that penetrates the steam generator and the fixing hole and is screwed together. An instrument assembly including an instrument module provided to inspect the interior of the steam generator; and
A tilting assembly is installed in the handhole of the steam generator, guides insertion of the instrument assembly into the steam generator, and adjusts the angle of the instrument assembly,
The tilting assembly,
A mounting unit mounted on the steam generator and including a hollow cylindrical assembly part; and
It includes a tilting unit installed through the hollow of the assembly part and into which the mechanism assembly is inserted,
The assembly unit includes a plurality of tilting slots formed along a circumferential direction around the central axis of the assembly unit,
The tilting unit is provided to be tiltable with respect to the central axis to adjust the angle of the mechanism assembly, and includes a position fixing protrusion provided to be inserted into any one of the plurality of tilting slots,
The tilting unit is,
a tilting body portion including a tilting body through which the mechanism assembly passes; and
It includes a locking member coupled to the position fixing protrusion to fix the tilting angle of the tilting body portion,
The position fixing protrusion protrudes in a radial direction on the outer surface of the tilting body,
The mounting unit is,
A steam generator inspection device is formed in a ring shape and is provided to surround an outer surface of the tilting unit, and further includes a bush member coupled to the inner surface of the assembly part.

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