KR102036910B1 - Apparatus and method for coating of tube for manufacturing metallic fuel slug - Google Patents

Abstract

The fuel coating tube coating apparatus is a rotary part for rotating the fuel core manufacturing tube is located between the nozzle portion for injecting a coating liquid to the inner surface of the fuel core manufacturing tube, the transfer portion connected to the nozzle portion and conveying the nozzle portion in the horizontal direction, between the rotating portion and the transfer portion And a support part surrounding the fuel core manufacturing tube and preventing shaking of the fuel core manufacturing tube, and a supply pipe connected to one end of the nozzle unit and supplying fluid to the nozzle unit.

Description

Tube coating apparatus and method for metal fuel core manufacturing {APPARATUS AND METHOD FOR COATING OF TUBE FOR MANUFACTURING METALLIC FUEL SLUG}

Provided are a tube coating apparatus and method for producing a metal fuel core.

In general, sodium-cooled fast reactor (SFR) is melted in a high-temperature vacuum state using a raw material of various compositions, such as metal fuel U-Zr or U-Zr-TRU-RE, injection molding, etc. Metal fuel cores are manufactured using the following process and used as nuclear fuel after the subsequent process.

In order to manufacture metal fuel cores of appropriate specifications, a fuel core manufacturing tube that can be used at high temperatures is used as a mold for standardizing molten materials. The fuel core manufacturing tube may be coated on the inner surface of the tube with a slurry solution of high temperature yttria or zirconia and dried to be used in the fuel core manufacturing process.

Apparatuses for improving the coating process of tubes for producing fuel shims have been studied. In a related prior art, US Pat. No. 9,757,758 discloses "process and apparatus for applying a coating inside a tube."

United States Patent No. 9,757,758

One embodiment of the present invention is to automatically coat and dry the inner surface of the tube for producing fuel shim to increase the uniformity of the coating.

One embodiment of the present invention is to increase the quality of the metal fuel core by standardizing the manufacturing process of the tube for producing the fuel core.

In addition to the above object, embodiments according to the present invention can be used to achieve other objects not specifically mentioned.

In accordance with one embodiment of the present invention, a tube coating apparatus for manufacturing a fuel core includes a rotating unit for rotating a fuel core manufacturing tube, a nozzle unit for spraying a coating solution on an inner surface of the fuel core manufacturing tube, and connected to the nozzle unit to transfer the nozzle unit in a horizontal direction. It includes a conveying part, a support part which is located between the rotary part and the conveying part to surround the fuel core manufacturing tube and prevents shaking of the fuel core manufacturing tube, and a supply pipe connected to one end of the nozzle portion and supplying fluid to the nozzle portion.

One embodiment of the present invention can automate the coating and drying operation of the fuel core manufacturing tube to uniformly coat the inner surface of the fuel core manufacturing tube, it is possible to standardize the manufacturing process to increase the quality of the metal fuel core.

1 is a perspective view showing a tube coating device for manufacturing a fuel shim according to an embodiment of the present invention.
Figure 2 is a perspective view showing a rotating part of the tube coating device for producing a fuel shim according to an embodiment of the present invention.
3 is a perspective view showing a conveying part of the tube coating apparatus for manufacturing a fuel shim according to an embodiment of the present invention.
Figure 4 is a perspective view showing a nozzle portion of the tube coating device for producing a fuel shim according to an embodiment of the present invention.
Figure 5 is a perspective view showing the discharge pipe of the tube coating device for producing a fuel shim according to an embodiment of the present invention.
Figure 6 is a perspective view showing a drying unit of the tube coating device for producing a fuel shim according to an embodiment of the present invention.
7 is a perspective view showing the support of the tube coating apparatus for producing a fuel shim according to an embodiment of the present invention.

DETAILED DESCRIPTION Embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily practice the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. The drawings and description are to be regarded as illustrative in nature and not restrictive. Like reference numerals designate like elements throughout the specification. In addition, in the case of well-known technology, a detailed description thereof will be omitted.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. When a portion of a layer, film, region, plate, etc. is said to be "on top" of another part, this includes not only when the other part is "right on" but also another part in the middle. On the other hand, when a part is "just above" another part, there is no other part in the middle. Conversely, when a part of a layer, film, region, plate, etc. is "below" another part, this includes not only the other part "below" but also another part in the middle. On the other hand, when a part is "just below" another part, it means that there is no other part in the middle.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

Next, a description will be given of a tube coating device for producing a fuel shim according to an embodiment of the present invention. The tube coating apparatus for fuel core manufacturing can improve the coating process that has been performed by a conventional manual process by automating the coating process, can constantly standardize the characteristics of the coating film, and improve the manufacturing quality of the fuel core.

1 is a perspective view showing a tube coating device for producing a fuel core according to an embodiment of the present invention, Figure 2 is a perspective view showing a rotating part of the tube coating device for producing a fuel core according to an embodiment of the present invention, Figure 3 4 is a perspective view illustrating a conveying part of a tube coating apparatus for manufacturing a fuel core according to an embodiment of the present invention, FIG. 4 is a perspective view illustrating a nozzle part of the tube coating apparatus for manufacturing a fuel core according to an embodiment of the present invention, and FIG. 6 is a perspective view illustrating a discharge tube of the tube coating apparatus for manufacturing a fuel core according to an embodiment, and FIG. 6 is a perspective view illustrating a drying unit of the tube coating apparatus for manufacturing a fuel core according to an embodiment of the present invention, and FIG. 7 is an embodiment of the present invention. It is a perspective view which shows the support part of the tube coating apparatus for fuel shim manufacture which concerns on an example.

Referring to FIG. 1, the tube coating apparatus 1 for manufacturing a fuel core 1 includes a rotary part 10, a nozzle part 20, a transfer part 30, a support part 40, a first supply part 60, and a second supply part 70. It may include a third supply unit 80. The user can uniformly coat the inner surface of the tube for fuel core production by using the tube coating device 1 for fuel core manufacturing.

The fuel core manufacturing tube T may be a mold for manufacturing a metal fuel core. The fuel core tube T may be made of silicon dioxide (SiO ₂ ) or the like. The fuel core manufacturing tube T may be a quartz tube. One end of the fuel shim tube T may have a blocked shape. One end of the fuel core manufacturing tube T may protrude along the outer circumferential surface of the fuel core manufacturing tube T. The other end of the fuel shim tube T may have a shape inclined at an angle of about 45 degrees.

Referring to FIG. 2, the rotating unit 10 may rotate the fuel core manufacturing tube T along the direction of the arrow. The rotating unit 10 may include a frame 11, a rotating motor 12, a first gear 13, a chain 14, a second gear 15, and a holder 16.

The frame 11 may be located on an upper surface of the base B. The frame 11 may extend in the z-axis direction. The rotary motor 12 may be located at one side of the frame 11. The first gear 13 may be located on the other side of the frame 11. The rotary motor 12 and the first gear 13 may be coupled to each other with the frame 11 interposed therebetween. As the rotary motor 12 rotates, the first gear 13 may rotate.

The second gear 15 may be located on the other side of the frame 11. The second gear 15 may be located above the first gear 13. The second gear 15 may be connected to the first gear 13 through the chain 14. The fuel core manufacturing tube T may be inserted into the through hole 17 of the second gear 15.

Holder 16 may be positioned surrounding the fuel core manufacturing tube (T). The holder 16 may be connected to the second gear 15. The holder 16 may be made of a polymer material or the like. The holder 16 may be made of an elastomer having an elasticity or the like. The holder 16 may surround the outer surface of the fuel core manufacturing tube T and protect the fuel core manufacturing tube T.

When the fuel core tube T is inserted into the through hole 17 of the second gear 15, the holder 16 may be connected to the second gear 15 while surrounding the fuel core tube T. When the rotary motor 12 operates, the first gear 13 connected to the rotary motor 12 may rotate. As the first gear 13 rotates, the second gear 15 connected to the first gear 13 and the chain 14 may rotate. By the rotation of the second gear 15, the fuel core manufacturing tube T held in the holder 16 may rotate in one direction.

Since the fuel core manufacturing tube T does not rotate coaxially with the rotary motor 12, the fuel core may be prevented from being directly transmitted to the fuel core manufacturing tube T from the vibration that may be generated in the rotary motor 12. The rotational stability of the manufacturing tube T can be improved.

Referring back to FIG. 1, the nozzle unit 20 may move to an inner surface of the tube T for manufacturing fuel cores. The nozzle unit 20 may spray the coating liquid on the inner surface of the tube T for manufacturing the fuel core. One side of the nozzle unit 20 may be connected to the supply pipe 22. The supply pipe 22 may supply a fluid such as a coating liquid, a cleaning liquid, or a gas to the nozzle unit 20. Supply pipe 22 is extended may be connected to the pump (P). One side of the pump P may be connected to the first supply unit 60 and the other side may be connected to the second supply unit 70.

The first supply unit 60 may include a first reservoir 61, an agitator 62, and a thermostat 63. The first reservoir 61 may have a cylindrical shape. The first reservoir 61 may accommodate the coating liquid. The coating solution may be a slurry solution such as Yttria or Zirconia. The stirrer 62 may be located inside the first reservoir 61. The stirrer 62 may homogeneously mix the coating liquid in the lower portion of the first reservoir 61.

The thermostat 63 may be connected to the first reservoir 61. The thermostat 63 may maintain the coating solution accommodated in the first reservoir 61 at a constant temperature. The thermostat 63 may maintain a constant temperature even when a change in the external or internal environment of the first reservoir 61 occurs, thereby preventing a change in physical properties of the coating solution.

The second supply part 70 may have a cylindrical shape. The second supply unit 70 may receive the washing liquid. The washing liquid may be introduced into the nozzle unit 20 through the supply pipe 22 to wash the coating liquid remaining in the nozzle unit 20. The third supply unit 80 may be connected to the second supply unit 70. The third supply unit 80 may supply the cleaning gas to the nozzle unit 20 through the supply pipe 22. Since the washing gas may additionally wash the nozzle unit 20, the washing efficiency of the nozzle unit 20 may be increased.

Referring to FIG. 3, the transfer unit 30 may be connected to the nozzle unit 20. The transfer unit 30 may transfer the nozzle unit 20 in the horizontal x-axis direction along an arrow. The transfer unit 30 may include a moving body 31, a screw hole 32, a moving hole 33, a transfer motor 34, a screw 35, and a guide 36.

The nozzle unit 20 may be inserted in the upper portion of the movable body 31. The screw hole 32 may be located under the moving body 31. The screw 35 may be inserted into the screw hole 32. The screw 35 extends in the x-axis direction and may be connected to the transfer motor 34.

A screw thread engaged with the screw 35 may be formed inside the screw hole 32. When the screw 35 is rotated by the transfer motor 34 in the state in which the nozzle unit 20 is fixed, the movable body 31 may move in the horizontal direction while engaging the screw hole 32. For example, when the transfer motor 34 rotates in the forward direction, the movable body 31 may move in the x-axis direction, and when the transfer motor 34 rotates in the reverse direction, the movable body 31 may move in the -x axis direction.

The guide 36 extends in the x-axis direction and may be positioned to face the screw 35. In this case, the guide 36 may be positioned to face each other with the screw 35 therebetween. The moving hole 33 may be located under the moving body 31. The moving hole 33 may be a pair. The guide 36 may be inserted into the moving hole 33.

When the movable body 31 moves in the horizontal direction according to the engagement of the screw 35 and the screw hole 32, the movable body 31 can move along the guides 36 located on both sides of the screw 35, so that the movement stability Can increase.

Referring to FIG. 1, when the fuel core manufacturing tube T is inserted into the rotating unit 10, the nozzle unit 20 may move forward in the fuel core manufacturing tube T by the transfer unit 30. When the rotating unit 10 rotates the fuel core manufacturing tube T in one direction, the coating liquid contained in the first reservoir 61 is supplied to the nozzle unit 20 along the supply pipe 22 and the fuel core manufacturing tube T is rotated. The coating liquid can be sprayed on the inner surface of the. In this case, since the fuel core manufacturing tube T can continue to rotate at a constant speed, the phenomenon that the coating liquid is biased to one side can be prevented beforehand.

Accordingly, the sprayed coating liquid may be evenly distributed on the inner surface of the tube T for fuel core manufacturing to form a uniform coating layer. The transfer unit 30 may repeatedly transfer the nozzle unit 20 in the x-axis direction and the -x-axis direction on the inner surface of the fuel core manufacturing tube T.

In FIG. 4, the injection hole 21 may be located at one side of the nozzle unit 20. The injection holes 21 may be formed in plural along the outer circumferential surface of the nozzle unit 20. Since the injection hole 21 may have a fine hole shape, the coating liquid may be uniformly sprayed on the inner surface of the tube T for manufacturing the fuel core.

The fuel core manufacturing tube coating apparatus 1 may automatically perform a coating process on the inner surface of the fuel core manufacturing tube T through the rotating unit 10, the nozzle unit 20, and the transfer unit 30. Since the coating film can be formed, the quality of the fuel core tube T can be improved.

On the other hand, in the related art, since the operator manually coats the inner surface of the fuel core manufacturing tube using a brush or the like, the state of the coating film is not uniform, and when the metal fuel core is manufactured with the fuel core manufacturing tube having a non-uniform coating state, Quality can also be lowered.

Referring back to FIG. 1, when the nozzle unit 20 completes uniform coating liquid injection on the inner surface of the fuel core manufacturing tube T, the nozzle unit 20 is transferred to the fuel core manufacturing tube T by the transfer unit 30. Can move backwards outward. When the nozzle unit 20 moves outside the fuel core tube T, the rotating unit 10 may rotate the fuel core tube T for about 1 minute to 2 minutes. In this case, the coating liquid may have a uniform thickness while the coating solution rotates inside the fuel core tube T.

The washing solution accommodated in the second supply unit 70 may be supplied to the nozzle unit 20 along the supply pipe 22. The cleaning liquid may wash the coating liquid remaining in the nozzle unit 20. In addition, the third supply unit 80 may supply the washing gas to the nozzle unit 20 to secondly clean the inner surface of the tube T for manufacturing the fuel core.

In FIG. 5, an end portion of the nozzle unit 20 may be connected to the discharge pipe 23. The cleaning liquid may be discharged to the outside of the tube coating device 1 for fuel core manufacturing through the discharge pipe 23 after washing the inner surface of the nozzle unit 20.

Referring to FIG. 6, the nozzle unit 20 coats the inner surface of the fuel core manufacturing tube T, and the second supply unit 70 and the third supply unit 80 complete the cleaning of the nozzle unit 20. The fuel core manufacturing tube T may be dried in the drying unit 50. The coating liquid sprayed on the fuel core manufacturing tube T may be first dried while being evaporated after a predetermined time, and the drying unit 50 may dry the coating layer formed by first drying the inside of the fuel core manufacturing tube T. Can be completely dried in secondary.

The drying unit 50 may include a chamber 51, a drying rotating unit 52, an infrared lamp 53, a gas distribution unit 54, and a gas supplier 55. The chamber 51 may include an opening and closing port 511. The user may position the fuel core manufacturing tube T completed until the washing operation through the opening and closing hole 511 in the chamber 51.

The dry rotation unit 52 may include a dry motor 57, a third gear 58a, a fourth gear 58b, and a chain 58c. The dry motor 57 may be connected to the third gear 58a. As the drying motor 57 rotates, the third gear 58a may rotate. The fourth gear 58b may be located below the third gear 58a. The fourth gear 58b may be connected to the third gear 58a through the chain 58c. The fuel core manufacturing tube T may be inserted into the through hole 59 of the fourth gear 58b.

When the dry motor 57 is operated, the third gear 58a connected to the dry motor 57 may rotate, and the fourth gear 58b connected to the third gear 58a and the chain 58c may rotate. By the rotation of the fourth gear 58b, the fuel core manufacturing tube T can rotate in one direction.

The gas distribution unit 54 may be located inside the chamber 51. The gas distribution unit 54 may be located below the dry rotation unit 52. The gas distribution unit 54 may include a supply hole 56. The supply holes 56 may be disposed on the outer surface of the gas distribution unit 54 and formed in plural. The gas distribution unit 54 may be connected to the gas supplier 55 located outside the chamber 51. The gas supplier 55 may supply a gas such as argon (Argon, Ar) to the gas distribution unit 54.

The gas distribution unit 54 may include a first distribution pipe 54a, a second distribution pipe 54b, and a third distribution pipe 54c. The second distribution pipe 54b may be coaxially connected to the gas supplier 55. The first distribution pipe 54a and the third distribution pipe 54c may be positioned to face the second distribution pipe 54b, respectively. The first distribution pipe 54a and the third distribution pipe 54c may be positioned to face each other with the second distribution pipe 54b therebetween.

Since the first distribution pipe 54a, the second distribution pipe 54b, and the third distribution pipe 54c may be located at the inner part, the center part, and the outer part of the chamber 51, respectively, the gas supplier 55 The gas supplied from the gas can be evenly distributed to the chamber 51.

The infrared lamp 53 may be located inside the chamber 51. The infrared lamp 53 may be located below the drying rotating part 52. The infrared lamps 53 may be a pair. The infrared lamp 53 may be located above the gas distribution unit 54. When gas is supplied into the chamber 51 through the gas distribution unit 54, the infrared lamp 53 may generate heat at room temperature to dry the fuel core manufacturing tube T. The infrared lamp 53 may generate heat at about 400 ° C.

The gas supplier 55 may be connected to a mass flow controller (MFC) 551. Mass flow controller 551 may be associated with pressure gauge 552. The mass flow controller 551 and the pressure gauge 552 can monitor and control the mass, flow rate and pressure of the gas supplied into the chamber 51. The chamber 51 may be connected to the check valve (V). The user may discharge the gas inside the chamber 51 through the check valve (V) if necessary.

When the user finishes coating the inner surface of the fuel core manufacturing tube T, the user may dry the fuel core manufacturing tube T in the drying unit 50. Since the drying unit 50 may uniformly dry the coating film on the inner surface of the fuel core manufacturing tube T, the coating quality of the fuel core manufacturing tube T may be improved. In addition, since the drying unit 50 may heat the inner surface of the fuel core manufacturing tube T by using the gas and the infrared lamp 53 supplied inside the chamber 51, the drying efficiency of the fuel core manufacturing tube T may be improved. Can increase.

Referring to FIG. 7, the tube coating device 1 for manufacturing a fuel core may include a support 40. The support portion 40 may be positioned to surround the outer surface of the tube for manufacturing the fuel core (T). The support part 40 may be located between the rotation part 10 and the transfer part 30. The support part 40 may prevent the vibration or the self-rotation of the fuel core manufacturing tube T while supporting the fuel core manufacturing tube T in advance. The support part 40 may include a cage 41, an elastic body 44, a block part 45, and a support 49.

Cage 41 may be in contact with the outer surface of the tube (T) for producing the fuel core. The cage 41 may be a bearing. In this case, the cage 41 may rotate together when the fuel core tube T is rotated to reduce friction between the fuel core tube T and the support 40.

The cage 41 may include an upper cage 42 and a lower cage 43. The upper cage 42 has a circular arc shape and may be in contact with the upper portion of the tube (T) for producing the fuel core. The lower cage 43 may have an arc shape and may contact the lower portion of the tube T for manufacturing the fuel core.

The elastic body 44 may be located along the outer circumferential surfaces of the upper cage 42 and the lower cage 43. The elastic body 44 may include a first elastic body 44a and a second elastic body 44b. The second elastic member 44b is a pair, and may be positioned to have an arc shape along both ends of the upper cage 42 and the lower cage 43. The first elastic body 44a may be located between the pair of second elastic bodies 44b. The elastic body 44 may be made of a polymer material or the like. The elastic body 44 may be made of an elastomer having an elasticity or the like.

The block portion 45 may accommodate the cage 41. The block portion 45 may be in contact with the elastic body 44. The block part 45 may include an upper block part 46 and a lower block part 47. The upper block portion 46 may accommodate the upper cage 42 and the lower block portion 47 may accommodate the lower cage 43. The upper block portion 46 and the lower block portion 47 may be connected through the hinge portion 48. The block part 45 may open and close the hinge part 48 at a predetermined angle with respect to the central axis. When the block part 45 is closed, the upper cage 42 and the lower cage 43 may be coupled to each other.

The support 49 may be connected to the block 45. One side of the support 49 may be connected to the lower block portion 47 and the other side may be connected to the base B. The support 49 may be positioned on the upper surface of the base B while supporting the block portion 45.

When the fuel core tube T is rotated by the rotary unit 10, the cage 41 abutting with the tube core T can also rotate. Since the elastic body 44 may absorb vibrations that may be generated while the cage 41 rotates, the elastic body 44 may reduce vibrations, shaking, and the like that the tube T for fuel core manufacturing may receive. Accordingly, the rotational stability of the fuel core tube T can be improved.

The fuel coating tube coating apparatus 1 may form a coating layer having a uniform thickness on the inner surface of the fuel core manufacturing tube T through the nozzle unit 20 transferred by the rotating unit 10 and the transfer unit 30. Through the drying unit 50, the coating layer on the inner surface of the tube T for fuel core manufacturing may be automatically dried. Thus, the inner surface of the tube for producing the fuel core can be uniformly coated, and the quality of the metal fuel core can be improved by standardizing the manufacturing process.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1: tube coating apparatus 10: rotating part
11. Frame 12. Rotary Motor
13. First gear 14. Chain
15. Second Gear 16. Holder
17.Through hole 20.Nozzle part
21. Injection hole 22. Supply pipe
23. Discharge pipe 30. Transfer section
31. Moving body 32. Screw hole
33. Moving hole 34. Transfer motor
35.Screw 36.Guide
40. Support 41. Cage
42. Upper cage 43. Lower cage
44. Elastic body 45. Block part
46. Upper block portion 47. Lower block portion
48. Hinge 49. Support
50. Drying Unit 51. Chamber
52. Drying part 53. Infrared lamp
54. Gas distribution unit 55. Gas supply unit
56. Supply hole 57. Dry motor
58a. Third gear 58b. Fourth gear
58c. Chain 59. Through Hole
60. First supply 61. First reservoir
62. Stirrer 63. Thermostat
70. Second supply 80. Third supply

Claims (22)

Rotating part for rotating the fuel core manufacturing tube,
A nozzle unit for injecting a coating liquid on the inner surface of the tube for manufacturing the fuel core,
A transfer part connected to the nozzle part and configured to transfer the nozzle part in a horizontal direction;
A support part disposed between the rotary part and the transfer part to surround the fuel core manufacturing tube and to prevent shaking of the fuel core manufacturing tube, and
A supply pipe connected to one end of the nozzle part and supplying a fluid to the nozzle part
Including;
The support part includes a cage that is in contact with the outer surface of the fuel core manufacturing tube and rotates according to the rotation of the fuel core manufacturing tube, an elastic body located along the outer circumferential surface of the cage, and a block portion accommodating the cage and contacting the elastic body. Tube coating device for fuel core manufacturing. delete In claim 1,
The cage includes a circular arc-shaped upper cage in contact with the upper portion of the fuel core manufacturing tube, and an arc-shaped lower cage in contact with the lower portion of the fuel core manufacturing tube coating apparatus for producing fuel cores. In claim 3,
The block portion is a tube coating apparatus for manufacturing a fuel shim including an upper block portion for receiving the upper cage, a lower block portion for receiving the lower cage, and a hinge portion connecting the upper block portion and the lower block portion. In claim 1,
The rotating part is a frame, a rotary motor located on one side of the frame, a first gear located on the other side of the frame and connected to the rotary motor, and a second gear located on the other side of the frame and connected to the first gear and the chain. Tube coating apparatus for producing a fuel core comprising a. In claim 5,
The rotating part includes a holder connected to the second gear and surrounding the fuel core manufacturing tube, wherein the holder rotates while holding the fuel core manufacturing tube according to the rotation of the second gear. Tube coating device. In claim 1,
The conveying unit is a tube coating apparatus for manufacturing a fuel shim comprising a screw that is connected to the moving body and the other side is connected to the moving body and the transfer motor is inserted into the nozzle. In claim 7,
The moving body includes a screw hole located in the lower portion of the moving body and the screw hole is inserted into the screw hole, the moving tube is moved in the horizontal direction when the screw is rotated tube coating apparatus for manufacturing a fuel core. In claim 8,
The conveying unit is a tube coating device for producing a fuel shim comprising a guide facing the screw. In claim 9,
The moving body includes a moving hole which is located facing the screw hole, the moving hole is inserted into the guide and the moving body is a tube coating apparatus for manufacturing a fuel core to move along the guide. In claim 1,
The nozzle unit tube coating apparatus for producing a fuel shim including an injection hole located along the outer circumferential surface of the nozzle unit. In claim 1,
And a first supply part connected to the supply pipe and supplying the coating liquid to the supply pipe. In claim 12,
The first supply unit for manufacturing a fuel core including a first reservoir containing the coating liquid, a stirrer located inside the first reservoir and agitating the coating liquid, and a thermostat connected to the first reservoir and maintaining the temperature of the coating liquid. Tube coating device. In claim 1,
And a second supply unit connected to the supply pipe and supplying a washing liquid to the supply pipe. The method of claim 14,
And a discharge pipe connected to the other end of the nozzle part, wherein the cleaning liquid washes the coating liquid inside the nozzle part and is discharged through the discharge pipe. The method of claim 15,
And a third supply unit connected to the supply pipe and supplying a washing gas to the supply pipe. In claim 1,
A fuel coating tube coating apparatus further comprises a drying unit for drying the fuel core manufacturing tube. The method of claim 17,
The drying unit includes a chamber, a drying rotating unit positioned inside the chamber to rotate the fuel core manufacturing tube, an infrared lamp positioned below the drying rotating unit, and a gas distribution unit for injecting gas into the chamber. Tube coating device. The method of claim 18,
The gas distribution unit is a tube coating apparatus for manufacturing a fuel shim comprising a supply hole connected to a gas supplier located outside the chamber and supplying gas to an outer surface thereof. A rotating part for rotating the fuel core manufacturing tube, a nozzle unit for injecting a coating liquid to the inner surface of the fuel core manufacturing tube, a transfer unit connected to the nozzle portion and conveying the nozzle portion in the horizontal direction, and a supply pipe for supplying fluid to the nozzle portion Providing a tube coating device for manufacturing a fuel core comprising a,
Inserting the fuel core manufacturing tube into the rotating part;
Moving the nozzle unit to the inside of the fuel core manufacturing tube by the transfer unit;
Rotating the fuel core manufacturing tube by the rotating unit;
The coating liquid is supplied to the nozzle unit along the supply pipe,
Spraying the coating liquid onto the inner surface of the fuel core manufacturing tube and uniformly coating the inner surface of the fuel core manufacturing tube;
Moving the nozzle unit to the outside of the fuel core manufacturing tube along the transfer unit;
Washing liquid is supplied to the nozzle unit along the supply pipe and washing the coating liquid inside the nozzle unit; and
Drying the fuel core manufacturing tube
Containing
Tube coating method for manufacturing fuel shim. The method of claim 20,
The washing of the coating liquid may include supplying a gas to the nozzle part along the supply pipe and washing the gas inside the nozzle part. The method of claim 21,
The drying of the fuel core manufacturing tube may include inserting and rotating the fuel core manufacturing tube into a chamber, supplying gas to the chamber, and heating the inside of the chamber with an infrared lamp at room temperature. Tube coating method for making shims.

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