KR100871291B1 - Copy hull?s menufacturing apparatus and method thereof - Google Patents

Abstract

Disclosed are an apparatus for manufacturing a simulated cladding tube, and a method of manufacturing the same, which manufacture a simulated cladding tube by maintaining a zircaloy tube at high temperature and high pressure. The apparatus for manufacturing a simulated cladding tube according to the present invention uses a zircaloy tube cut to a predetermined size to a container portion having a storage space, water, and adjusts the temperature and pressure of the storage space through a pressure control unit and a temperature control unit. It is possible to produce simulated cladding tubes with physical properties similar to those of nuclear fuel rods. It is easy to maintain the Zircaloy tube at the proper temperature and the appropriate pressure, and the structure is simple, so it is easy to operate and manufacture.

Simulated cladding tube, spent fuel rod, temperature, pressure, Zircaloy tube, storage space

Description

Apparatus for manufacturing a simulated cladding tube and a method for manufacturing the same {COPY HULL'S MENUFACTURING APPARATUS AND METHOD THEREOF}

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an apparatus for manufacturing a simulated cladding tube of the present invention.

2 is a cross-sectional view of a simulated cladding tube manufacturing apparatus.

3 and 4 are perspective views illustrating a process of opening the cover of the simulated cladding tube manufacturing apparatus.

5 is a flowchart showing a method for manufacturing a simulated cladding tube of the present invention.

<Description of the symbols for the main parts of the drawings>

1: Copy coating pipe manufacturing apparatus 100: Container part

110: storage space 120: entrance

130: Support 200: Cover part

210: cover 220: assembly

300: temperature control part 310: temperature measuring instrument

320: control box 322: power switch

324 ： Temperature indicator 326 ： Temperature control switch

400: pressure regulator 410: pressure indicator

420 ： Fluid transfer pipe 430 ： Pressure regulating valve

The present invention relates to a simulated cladding tube manufacturing apparatus for producing a simulated cladding tube and a method for manufacturing the same, and more specifically, to a simulated cladding tube manufacturing apparatus for manufacturing a simulated cladding tube having a physical property similar to spent fuel rods, and a manufacturing method thereof. will be.

In order to manufacture a simulated cladding tube, generally, the spent fuel rod is cut in 250 mm units so that it can be easily processed. The cut spent fuel rod is moved to a processing space such as a hot cell, and the stripping process is performed by separating the cladding tube and pellets. Is performed.

Appropriate treatment tools, devices, and methods need to be devised through prior work, such as experiments, in order to ensure the safest possible processing, including cutting, transporting and stripping spent fuel rods.

These experiments may use simulated spent fuel rods, such as simulated cladding tubes and simulated pellets, which can replace spent fuel rods. The simulated spent fuel rods replacing these spent fuel rods should basically have similar physical characteristics as the spent fuel rods. In addition, at present, it is time to study the apparatus and method for producing a large amount of such simulated spent fuel rods in a safe state.

According to an object of the present invention for solving the above problems, there is provided an apparatus for manufacturing a simulated cladding tube similar to the physical properties, such as tensile strength, hardness, and the like and similar to the spent nuclear fuel rod.

It is another object of the present invention to provide an apparatus for manufacturing a simulated cladding tube having a physical property similar to spent fuel rods by heat treatment at high temperature and high pressure using a large amount of cut Zircaloy tubes and a method of manufacturing the same.

It is still another object of the present invention to provide an apparatus for manufacturing a simulated cladding tube and a method for manufacturing the capillary cladding tube having a physical property similar to spent fuel rods desired by a user in various environments due to easy temperature and pressure control.

Still another object of the present invention is to provide a simulated cladding tube manufacturing apparatus and a method of manufacturing the same, which can be easily manipulated by a user due to a simple structure, and provide ease of use and can reduce manufacturing costs by making the fabrication easier.

According to a preferred embodiment of the present invention for achieving the above object of the present invention, the apparatus for manufacturing a simulated cladding tube for receiving a zircaloy tube and fluid therein to produce a simulated cladding tube having a physical property similar to the spent fuel rod is a storage unit It includes a temperature control unit and a pressure control unit.

The accommodation unit may accommodate the Zircaloy tube and the fluid therein, and for this purpose, a predetermined accommodation space is formed therein. The storage unit may be formed in a substantially cylindrical shape, but is not limited thereto.

The temperature control unit is formed on one side of the storage unit, it can adjust the internal temperature of the storage unit. That is, the temperature of the Zircaloy tube and the fluid may be increased by providing heat to the inner storage space of the storage unit.

The heating unit may be mounted to the storage unit to provide heat inside the storage unit, and may further include a temperature controller for adjusting the internal temperature of the storage unit. The temperature control unit may be connected to the hot wire to arbitrarily adjust the heat transfer amount.

The pressure regulating unit may be formed at one side of the accommodating unit to adjust an internal pressure of the accommodating unit. That is, the internal pressure may be adjusted by discharging the fluid stored in the storage unit to the outside. The pressure regulating unit may further include a pressure regulating valve to discharge the fluid to the outside.

On the other hand, the fluid used in the present invention may use water, but is not limited thereto.

In addition, a simulated cladding tube manufacturing apparatus for storing a zircaloy tube and water of the present invention to produce a simulated cladding tube having physical properties similar to spent nuclear fuel rods, an entrance is formed at an upper side thereof to store the zircaloy tube and water therein. A container part having a storage space therein, a cover part coupled to the doorway to selectively open and close the doorway, a temperature control part coupled to one side of the container part to adjust a temperature of the storage space, and one side of the container part; It is coupled to include a pressure control unit for adjusting the pressure of the storage space.

The temperature control unit includes a temperature measuring device for measuring the temperature of the storage space, a heater coupled to the container to provide heat to the storage space, and a control box for controlling the internal temperature of the storage space by driving the heater. do.

The pressure adjusting unit is formed on a pressure indicator for checking a pressure of the storage space, a fluid transport pipe connected to the storage space to transfer the water to the outside, and a path of the fluid transport pipe, and the water is opened and closed according to the degree of opening and closing. It includes a pressure control valve for varying the pressure of the storage space by adjusting the amount discharged to the outside.

In addition, a method of manufacturing a simulated cladding tube by storing a zircaloy tube and water therein includes providing a container part having a storage space therein, and separating the cover part coupled to an entrance side of the container part to open the doorway. Providing at least one of the zircaloy tubes in the storage space, providing the water in the storage space, and closing the entrance by coupling a cover coupled to the entrance side of the container. And providing heat to the receiving space to increase the temperature and pressure, and discharging the zircaloy tube changed to have physical properties similar to the spent fuel rods.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments.

1 is a perspective view showing a simulated cladding tube manufacturing apparatus of the present invention, Figure 2 is a cross-sectional view of the simulated cladding tube manufacturing apparatus.

As shown in this, the simulated cladding tube manufacturing apparatus 1 of this invention includes the container part 100, the cover part 200, the temperature control part 300, and the pressure control part 400. FIG.

The container part 100 is formed in a substantially cylindrical shape, and a storage space 110 for storing a zircaloy tube and water is formed therein. The storage space 110 may store a large amount of the Zircaloy tube cut to a predetermined length. On the other hand, the upper side of the container portion is opened to the entrance 120 is formed, the zircaloy tube and water through the entrance 120 may be introduced into the storage space (110).

In addition, a plurality of pedestals 130 may be formed on the bottom of the container part 100. The pedestal 130 may stably support the container part 100. On the other hand, a device such as a damper for absorbing vibration may be provided to protect the zircaloy and water stored in the container 100 and the storage space 110 from external impact.

The cover part 200 may be coupled to the doorway 120 to selectively open and close the doorway 120. The cover part 200 includes a cover 210 fixed to the side of the doorway 120 and having the same cover hole 212 as that of the doorway 120. In addition, in order to couple the cover 210, the cover unit 200 may be formed with an assembly 220.

The combination 220 may separate or couple the cover 210 with the container part 100 to open and close the doorway 120 and the cover hole 212.

The assembly 220 includes at least one bolt 222 and a bolt hole 224 through which the bolt 222 is inserted into the cover 210 in correspondence with the bolt 222. 224 is formed to extend to the container portion (100). That is, the bolt 222 penetrates the cover 210, and one end side thereof is partially inserted into the upper side of the container part 100 to be coupled thereto. As a result, the cover part 200 may be firmly coupled to the container part 100, and may prevent the door 120 from being opened even under a large impact.

The bolt 222 may use a hexagonal bolt, but is not limited thereto, and various fastening members such as a skew bolt or a countersunk head bolt may be used.

The temperature controller 300 may include a temperature measuring device 310, a heater, and a control box 320, and may adjust the temperature together with the measurement of the temperature of the storage space 110.

The temperature measuring device 310 may be attached to the cover part 200 to measure the temperature of the storage space 110. That is, when the temperature measuring device 310 is coupled to the lower surface of the cover 210, the temperature measuring device 310 is located in the receiving space 110 can measure the temperature. The temperature measuring device 310 may use a thermocouple thermometer.

The heater is coupled to the container part 100 to provide heat to the storage space 110. The heater may be embedded in the bottom or side portion of the container portion 100, it is preferable to form to provide a uniform heat in the storage space (110). To this end, the heater may be formed of a hot wire and embedded in all wall surfaces of the container part 100. The hot wire is preferably distributed at uniform intervals to provide uniform heat to the receiving space (110). The heater may be formed in the form of a plate for transferring heat in addition to the heating wire.

On the other hand, the inner surface of the container portion 100 to form the storage space 110 is preferably made of a material having a high heat resistance and corrosion resistance, good heat transfer rate.

The control box 320 is coupled to one side of the container portion 100, it is possible to adjust the temperature of the storage space (110). The control box 320 allows the user to identify a power switch 322 for driving the heater to be heated, a temperature control switch 326 for varying the degree of heating of the heater, and an internal temperature of the storage space 110. A temperature indicator 324 can be formed to enable this. The user may appropriately adjust the temperature of the storage space 110 by manipulating the temperature control switch 326 with reference to the temperature value displayed on the temperature indicator 324.

On the other hand, the temperature control unit 300 may include a power supply to supply electrical energy for heating the heater.

The pressure control unit 400 is formed on one side of the container unit 100 to adjust the pressure of the receiving space (110). To this end, the pressure control unit 400 includes a pressure indicator 410, a fluid transfer pipe 420, a pressure control valve 430.

The pressure indicator 410 may allow a user to recognize how much the pressure of the storage space 110 is. The pressure indicator 410 may be formed mechanically, may be formed electronically so that the pressure value is displayed by numbers or letters.

One end of the fluid transfer pipe 420 is connected to the accommodation space 110, and the other side is formed to be exposed to the outside. Since the pressure of the storage space 110 is the size of the storage space 110 by the Boyle-Charles law, that is, the volume is constant, the pressure is increased as the temperature of the fluid stored in the storage space increases. Therefore, when the pressure rises above the proper pressure due to the temperature increase of the storage space 110, the fluid stored in the storage space 110 is discharged to the outside through the fluid transfer pipe 420, thereby receiving the storage space ( 110) can be lowered.

Here, the appropriate temperature and the appropriate pressure means a temperature and pressure for the Zircaloy tube to have a physical property similar to the spent fuel rod, and this value may be present within a predetermined range.

At this time, the pressure control valve 430 is formed on the path of the fluid transfer pipe 420 to transfer the fluid. By opening and closing the pressure control valve 430 may adjust the amount of fluid flowing through the fluid transfer pipe 420.

3 and 4 are perspective views illustrating a process of opening the cover of the simulated cladding tube manufacturing apparatus.

As shown in the figure, the cover portion 200 may be separated in order to open the entrance 120 from the container portion 100 in the simulated cladding tube manufacturing apparatus 1. That is, a storage space is formed inside the container part 100, and the storage space means a space in which a Zircaloy tube and water can be stored. The zircaloy tube and water stored in the storage space may exhibit physical properties similar to spent fuel rods after a certain time while maintaining a predetermined temperature and pressure.

On the other hand, the zircaloy tube and water can be introduced into the storage space through the doorway 120, after which the cover portion 200 closes the doorway 120 to seal the container portion 100 You can. It is very important to close the entrance 120 because the zircaloy tube and water are put in the container part 100 and thus the zircaloy tube is maintained at a high temperature and a high pressure during heat treatment with a simulated cladding tube.

The cover portion 200 in the present invention is fastened to the container portion 100 and the bolt 222 to close the entrance 120. In detail, the cover part 200 is fixed to the container part 100 and is coupled to the cover 210 having the cover hole 212 having the same size as the doorway 120. Can open and close the

The cover 210 may be coupled to each other by a bolt 222, and the surfaces in contact with each other are formed in a flat surface so that water is not discharged from the storage space to the doorway 120 when the cover 210 is in contact. You can do that.

The bolt 222 mainly uses a hexagonal bolt, and in this embodiment, a wrench 236 is used to loosen or tighten the bolt 222. Of course, in the case of using a hexagon bolt to the bolt 222 may be used as a wrench wrench (236).

Six bolts 222 may be coupled to the cover part 200. The bolts 222 may be coupled to the upper part of the container part 100 by passing through the cover part 200. Can be.

When the cover 210 is removed from the cover part 200 using the wrench 236, the doorway 120 is opened.

On the other hand, as shown, the lower surface of the cover 210 is equipped with a temperature measuring instrument 310 that can measure the temperature of the storage space. In the present embodiment, a thermocouple thermometer, which is an electric thermometer, is used as the temperature measuring device 310. However, the present invention is not limited thereto, and various types of thermometers such as glass thermometers and bimetal thermometers may be used.

5 is a flowchart showing a method for manufacturing a simulated cladding tube of the present invention. As shown in the drawing, a method of manufacturing a simulated cladding tube by accommodating a Zircaloy tube and water therein, first, provides a container part having an accommodation space therein (S100). The inner surface of the container portion constituting the storage space is preferably made of a material having a good heat transfer rate.

Next, the cover part is coupled to the doorway side of the container part to selectively open and close the doorway of the container part to open the doorway (S200). The cover part may be coupled to the entrance side of the container using a hexagonal bolt, and when separated, the hexagonal bolt may be released using a hexagonal wrench.

Next, the Zircaloy tube is introduced into the storage space (S300). In order to inject a large amount of the zircaloy tube into the storage space, it is preferable to cut a predetermined length, and can be accommodated in the storage space through the open doorway.

Next, the water is supplied to the receiving space (S400). The water thus supplied is a means to help the Zircaloy tube to maintain a high temperature and high pressure.

Next, the separated cover part is combined with the container part 100 again to close the entrance (S500). The coupling of the cover part 200 may be performed in the reverse order of separating the cover part 200.

Next, by providing heat to the storage space to increase the temperature and pressure (S600). When heat is provided to the Zircaloy tube and water stored in the storage space, the pressure and temperature of the storage space are increased by Boyle-Charles' law. The user can calibrate the Zircaloy tube to be in the proper temperature and pressure state in order to have physical properties similar to the spent fuel rods, and it is necessary to maintain the proper temperature and pressure state for a certain time.

On the other hand, the container portion may be coupled to a temperature control unit and a pressure control unit on one side thereof, and adjusts the temperature of the storage space through the temperature control unit, the pressure of the storage space than the appropriate pressure due to the increased temperature When it is high, the pressure of the storage space can be lowered by partially discharging the water stored in the storage space through the pressure adjusting unit to the outside.

For example, when maintaining a proper state of water at 102 cc, temperature 450 ° C., and pressure of 105 bar for 15 hours, the zircaloy tube may change tensile strength, hardness, etc., which have physical properties similar to those of the spent fuel rod. Of course, the appropriate state can be changed, it will be possible to calculate the appropriate state according to the various temperature-pressure-time of the apparatus for producing a simulated cladding tube of the present invention.

Next, the Zircaloy tube having a physical property similar to the spent fuel rod is discharged (S700). Through the titration, the Zircaloy tube is made of a simulated cladding tube that can be used in place of the spent fuel rod. In the container portion, a simulated cladding tube made of a zircaloy tube simulated cladding tube may be discharged to the outside through the entrance portion.

As such, by maintaining the Zircaloy tube at a proper temperature and a proper pressure for a predetermined time, a simulated cladding tube having properties similar to those of the spent fuel rods can be easily manufactured. In addition, the structure of the device is simple, easy to operate, safe, and reduce the manufacturing cost

As described above, according to the present invention, by providing a large amount of Zircaloy tube and water in a storage space of a constant size, and maintaining the appropriate temperature and the appropriate pressure easily simulated cladding tube having a physical property similar to the spent fuel rods There is an effect that can be produced.

In addition, after the Zircaloy tube and the water is put into the storage space, the cover is formed to seal the entrance completely to prevent the fluid from leaking out during the manufacturing process has the effect of ensuring stability in use.

In addition, by using a hexagon bolt as a medium for coupling the cover portion and the container portion, there is an effect that can be easily separated and coupled to the cover portion.

In addition, the temperature control unit for adjusting the temperature of the storage space and the pressure control unit for adjusting the pressure is formed, respectively, it is easy to implement a variety of temperature and pressure, and a predetermined range for the Zircaloy tube to have a physical characteristic similar to the spent fuel rods It is effective to set the proper temperature and proper pressure value.

In addition, since the temperature and pressure of the storage space can be informed to the user in real time, there is an effect of easily maintaining the proper temperature and proper pressure.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Claims (20)

In the simulated cladding tube manufacturing apparatus for storing a zircaloy tube and fluid therein to produce a simulated cladding tube having physical properties similar to spent fuel rods, An accommodation unit accommodating the zircaloy tube and fluid; A temperature control unit for controlling an internal temperature of the storage unit; And A pressure regulating unit for adjusting an internal pressure of the accommodation unit; Copying cloth tube manufacturing apparatus comprising a. The method of claim 1, The temperature control unit provides heat to the interior of the storage unit, and simulated cladding tube manufacturing apparatus, characterized in that for adjusting the internal temperature of the storage unit. The method of claim 2, The temperature control unit further comprises a temperature control unit for controlling the internal temperature of the housing unit. The method of claim 1, The pressure control unit is connected to the inside of the storage unit, and simulated pipe production apparatus, characterized in that for controlling the internal pressure of the storage container by discharging the fluid to the outside. The method of claim 4, wherein The pressure regulating unit further comprises a pressure control valve for discharging the fluid to the outside. The method of claim 1, Apparatus for producing a simulated cladding tube, characterized in that the fluid is water. In the simulated cladding tube manufacturing apparatus for storing a zircaloy tube and water therein to produce a simulated cladding tube having a physical property similar to the spent fuel rods, A container part having an entrance and an opening formed at an upper side thereof, and having an accommodation space for accommodating the Zircaloy tube and water therein; A cover part coupled to the doorway to selectively open and close the doorway; A temperature controller coupled to one side of the container to adjust a temperature of the storage space; And A pressure control unit coupled to one side of the container unit to control the pressure of the storage space; Imitation coating pipe manufacturing apparatus comprising a. The method of claim 7, wherein The temperature control unit A temperature measuring device measuring a temperature of the storage space; A heater coupled to the container to provide heat to the storage space; And A control box for controlling the internal temperature of the storage space by driving the heater; Imitation cladding tube manufacturing apparatus comprising a. The method of claim 8, The temperature measuring device is a simulated cladding tube manufacturing apparatus, characterized in that the thermocouple thermometer. The method of claim 8, The control box A power switch for supplying power to the heater; A temperature control switch for controlling a heating state of the heater; And A temperature indicator indicating an internal temperature of the container portion; Imitation cladding tube manufacturing apparatus comprising a. The method of claim 8, The heater is simulated cladding tube manufacturing apparatus, characterized in that to provide a uniform heat to the storage space. The method of claim 8, The heater includes a plurality of heating wire, the simulated cladding tube manufacturing apparatus, characterized in that formed on the wall surface of the container portion. The method of claim 7, wherein The pressure control unit A pressure indicator for checking the pressure in the storage space; A fluid transfer pipe connected to the accommodation space to transfer the water to the outside; And A pressure regulating valve formed on a path of the fluid transfer pipe to adjust an amount of the water discharged to the outside according to a degree of opening and closing; Imitation cladding tube manufacturing apparatus comprising a. The method of claim 7, wherein The cover part A cover fixed to the container and in which a cover hole corresponding to the entrance is formed; And A combination for coupling the cover; Includes, The cover is simulated cladding tube manufacturing apparatus, characterized in that separated and joined to the container portion by the combination to open and close the door. The method of claim 14, The combination is At least one bolt; And A bolt hole through which the bolt penetrates on the cover corresponding to the bolt; Imitation cladding tube manufacturing apparatus comprising a. The method of claim 15, The bolt is a wool cladding tube manufacturing apparatus, characterized in that the hexagonal bolt. The method of claim 7, wherein Apparatus for manufacturing a simulated cladding tube, characterized in that the container portion is formed in a substantially cylindrical shape. The method of claim 7, wherein Imitation coating tube manufacturing apparatus, characterized in that a plurality of pedestal is formed on the bottom surface of the container portion. In the method of manufacturing a simulated cladding tube of spent fuel rods for storing a zircaloy tube and water therein to produce a simulated cladding tube having physical properties similar to spent nuclear fuel rods, Providing a container unit having a storage space therein; Separating the cover part coupled to the doorway side of the container part to open the doorway; Providing at least one of the zircaloy tubes in the receiving space; Providing the water to the storage space; Coupling the separated cover part to close the entrance; Providing heat to the storage space to increase temperature and pressure; And Discharging the zircaloy tube having physical properties similar to the spent fuel rods; Simulated cladding tube manufacturing method comprising a. The method of claim 19, The physical property is a method of manufacturing a simulated cladding tube, characterized in that the tensile strength of the cladding tube.

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