CN110681925A - Spent fuel rod hot chamber cutting device - Google Patents

Abstract

The embodiment of the present invention discloses a spent fuel rod hot cell cutting device, comprising: a clamping assembly for clamping the spent fuel rod and a cutting tool for cutting the spent fuel rod, the cutting tool is arranged in a cutting tool box, The chips generated during the cutting process are collected in the cutting tool box, and the cutting tool box further includes a suction filter assembly for suction filtering the aerosol generated during the cutting process. According to the embodiments of the present invention, spent fuel rods of different sizes can be cut according to different process requirements, and radioactive waste can be effectively collected and absorbed, thereby reducing the pollution of the hot chamber during the cutting process of the spent fuel rods.

Description

Spent fuel rod hot chamber cutting device

technical field

The invention relates to the field of fuel rod cutting equipment, in particular to a spent fuel rod hot chamber cutting device.

Background technique:

In the current nuclear reactor, the nuclear fuel rod is the source of maintaining the fission chain reaction in the reactor core. It transfers the energy generated by fission to the coolant in the form of heat energy through the cladding, and is one of the most critical components in the reactor. After the nuclear fuel rods react to a certain burnup depth, the reaction efficiency of the fission chain reaction will be affected. At this time, the nuclear fuel rods need to be unloaded from the reactor. The unloaded nuclear fuel rods are spent fuel rods, which have extremely high radioactivity. At the same time, it also has a large amount of unused value-added materials, such as 238U or 232Th, so it is necessary to process the spent fuel rods to extract the nuclides. During the processing of the spent fuel rods, the spent fuel rods are cut. is a very crucial step.

The commonly used cutting method of spent fuel rods is to use a grinding wheel cutting machine to thermally cut the fuel rods in a hot chamber, and at the same time use running water to cut and cool the high-speed rotating grinding wheel cutting pieces. This method is called wet cutting. This method not only produces a large amount of radioactive waste liquid, but also the highly radioactive chips and aerosols produced by cutting cannot be effectively collected, resulting in an increase in the overall dose rate in the hot chamber, which not only affects the maintenance of the equipment in the hot chamber, but also increases the amount of radiation in the hot chamber. The difficulty of decontamination and the cost of waste liquid disposal.

The commonly used method of cutting spent fuel rods is to use a pipe cutter to cut the spent fuel rods. Although the pipe cutter can collect the chips and aerosols generated during the cutting process, the function of the pipe cutter itself is limited. , the cutting of the pipe cutter inevitably requires the fuel pellets and the fuel cladding to be cut together, which increases the generation of radioactive contaminants and the pipe cutter has a size range, and can only cut spent fuel rods of certain sizes.

How to cut the spent fuel rods as required (for example, only cut off the cladding of the fuel rods) while ensuring the effective absorption of the cut chips and aerosols is a challenge faced by the technicians.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a spent fuel rod hot cell cutting device, which can be used to cut spent fuel rods according to requirements while absorbing radioactive waste.

Embodiments of the present invention provide a spent fuel rod hot cell cutting device, comprising: a clamping assembly for clamping spent fuel rods; and a cutting tool for cutting the spent fuel rods fuel rods, the spent fuel rod hot cell cutting device further includes a cutting tool box, the cutting tool is arranged in the cutting tool box, and the chips generated during the cutting process are collected in the cutting tool box, and the cutting tool The box also includes a suction filter assembly for suction filtration of aerosols generated during the cutting process.

According to an embodiment of the present invention, a through hole is provided in the cutting tool box, so that the spent fuel rods clamped by the clamping assembly pass through the cutting tool box and are on the side wall of the cutting tool box A through hole is provided so that the cutting tool can pass through the side wall of the cutting tool box, so that the spent fuel rod can be cut.

According to an embodiment of the present invention, the end of the cutting tool away from the cutting tool box is fixed to the tool holder; the tool holder is provided with a hand wheel, and the hand wheel controls the cutting tool in the cutting tool box relative to the amount of feed of the spent fuel rods.

According to an embodiment of the present invention, the suction filter assembly includes a coarse filter screen, a first filter part disposed downstream of the coarse filter screen; a second filter part disposed downstream of the first filter part; and An evacuation element downstream of the second filter element.

According to an embodiment of the present invention, the cutting tool box includes a tool box body, and a collecting drawer is provided at the bottom of the tool box body, and the collecting drawer is communicated with the inside of the tool box body; the collecting The bottom plate of the drawer includes the coarse filter screen.

According to an embodiment of the present invention, the first filter member includes a first filter box in fluid communication with the tool box body and a first filter disposed within the first filter box; the second filter member includes A second filter box in fluid communication with the first filter box and a second filter disposed within the second filter box.

According to an embodiment of the present invention, the collecting drawer is connected with the first filter box through a connecting assembly, and the connecting assembly includes: a conical hopper fixedly connected to the bottom of the collecting drawer; a first connecting plate , the first connecting plate is fixedly connected with the end of the conveying hopper away from the collecting drawer, and the first connecting plate is provided with a first connecting hole corresponding to the discharge port of the conveying hopper ; The second connecting plate, the second connecting plate is fixedly connected with the top of the first filter box, the second connecting plate and the first connecting plate are attached together, and the second connecting plate is A second connection hole corresponding to the first connection hole is opened on the upper part; and a pressing bolt penetrates through and presses the first connection plate and the second connection plate.

According to an embodiment of the present invention, the first filter box is connected with the second filter box through a first connection pipe; and the suction inlet of the vacuuming component is connected with the second filter box through a second connection pipe .

According to an embodiment of the present invention, the cutting device further comprises a height-adjustable first support member for supporting the first end of the spent fuel rod; and a second support member, the The second support is used to support the second end of the spent fuel rod.

According to an embodiment of the present invention, the clamping assembly includes a clamping member for clamping the spent fuel rods; a transmission device for driving the clamping member to move; and a motor, The motor drivingly drives the transmission.

Through the above-mentioned technical solutions, the main technical effects of the present invention are:

1. The present invention can cut spent fuel rods of different sizes;

2. The present invention can absorb and filter the highly radioactive chips and aerosols generated during the cutting process, which greatly reduces the pollution of the hot chamber caused by the cutting of spent fuel rods;

3. The present invention uses the manipulator to operate the handwheel to change the feed amount of the cutting tool, and can only cut the cladding part of the spent fuel rod according to the requirements, thereby effectively reducing the generation of radioactive chips.

Description of drawings

1 is a front view of a spent fuel rod hot cell cutting device according to an embodiment of the present invention;

FIG. 2 is a top view of a spent fuel rod hot cell cutting device according to an embodiment of the present invention;

3 is a front view of the cutting tool box body and the first filter part in the embodiment of the present invention;

4 is a side view of the cutting tool box body and the first filter part in the embodiment of the present invention;

FIG. 5 is a top view of the second filter component and the vacuuming component in the embodiment of the present invention.

In the figure: 1. Clamping assembly; 11. Clamping part; 12. Transmission device; 13. Motor; 2. Cutting tool; 21. Tool holder; 211. Hand wheel; 3. Cutting tool box; 31. Tool box body 311, through hole; 312, through hole; 313, handle; 32, collection drawer; 321, first handle; 33, suction filter assembly; 331, first filter part; 3311, first filter box; 3312, 3313, the first filter port; 3314, the first connecting pipe; 332, the second filter part; 3321, the second filter box; 3322, the second filter; 3323, the second filter port; 3324, the first filter 2. Connecting pipe; 3325, pressing rod; 333, vacuuming part; 4, connecting assembly; 41, hopper; 42, first connecting plate; 43, second connecting plate; 44, pressing bolt; 441, turning handle; 5. spent fuel rods; 6. the first support; 7. the second support.

Detailed ways

The specific embodiments of the invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2 , the apparatus for cutting the spent fuel rod hot cell according to the embodiment of the present invention includes a clamping assembly 1 for clamping the spent fuel rod 5 and a cutting tool 2 for cutting the spent fuel rod 5, The spent fuel rod hot cell cutting device further includes a cutting tool box 3, a cutting tool 2 is arranged in the cutting tool box 3, and large-sized chips generated during the cutting process are collected in the cutting tool box 3, and the cutting tool box 3 also includes The suction filter assembly 33 is used to suction filter the aerosol generated during the cutting process.

The clamping assembly 1 of the spent fuel rod hot cell cutting device of the present invention includes a clamping member 11, a transmission device 12 and a motor 13. The clamping member 11 is used to clamp the spent fuel rod 5, and the transmission device 12 is used to drive the clamping member. 11 moves, the motor 13 drives the transmission device 12 in a driving manner, thereby transmitting the power of the motor 13 to the clamping member 11 , that is, transmitting the rotational movement of the motor 13 to the clamping member 11 through the transmission device 12 . The present invention does not specifically limit the type and structure of the clamping member 11 , for example, the clamping member 11 may be a clamping chuck.

The operator clamps the spent fuel rod 5 on the holder 11 and starts the motor 13. The motor 13 drives the holder 11 to rotate through the transmission device 12, and then drives the spent fuel rod 5 to rotate through the holder 11. 2. To cut the spent fuel rods 5, the operator can control the movement of the cutting tool 2 through remote operation, for example, control the feed amount of the cutting tool 2, and the chips generated during the cutting of the spent fuel rods 5 are collected in the cutting tool 2. In the tool box 3, the aerosols generated in the process of cutting the spent fuel rods 5 are also filtered and absorbed by the suction filter assembly 33, and finally the gas with greatly reduced radioactive contamination is discharged. Here, the cutting tool box 3 may be a substantially sealed box, so that chips and aerosols generated during the cutting process can be substantially enclosed in the cutting tool box 3, thereby preventing the dissipation of highly radioactive chips and aerosols.

If the size of the spent fuel rods 5 is long, only the clamping by the clamping assembly 1 will cause the spent fuel rods 5 to vibrate and become unstable during the cutting process. At this time, the clamping assembly 1 is not enough to stably support the spent fuel rods 5 In the horizontal position, other components are required to support the spent fuel rod 5 at this time. The spent fuel rod hot cell cutting device of the present invention further includes a first support member 6 and a second support member 7 with adjustable heights. The first support member 6 is used to support the first end of the spent fuel rod 5, and the second support member 7 is used to support the second end of the spent fuel rod 5 . Here, both the first support member 6 and the second support member 7 may be adjustable in height, so as to be suitable for supporting different types of spent fuel rods 5 , that is, to support spent fuel rods 5 with different diameters.

The first support member 6 is a floating support, supports the first end of the spent fuel rod 5, and its axial position relative to the spent fuel rod 5 can be adjusted, that is, the first support member 6 can be adjusted according to the spent fuel rod 5. Different lengths of 5 are placed at suitable positions on the floor of the hot cell so that the spent fuel rods 5 are as horizontal as possible. The center height of the first support 6 can also be adjusted according to the type of spent fuel rods 5, because different types of spent fuel rods 5 have different diameters, and the center height of the first support 6 can be adjusted to adapt to different spent fuel rods 5.

The second support 7 is a tailstock, and the second support 7 clamps and supports the second ends of the spent fuel rods 5 . Preferably, the second support 7 adopts an opening and closing structure, and the second support 7 can A clamping handle (not shown in the figure) is provided on the upper part, and the pressing plate with the guide wheel can be lifted by loosening the clamping handle, and the spent fuel rod 5 can be loaded and unloaded at this time. Preferably, the second support 7 is provided with three guide wheels arranged at an interval of 120°. After the spent fuel rods 5 are clamped, the spent fuel rods 5 can rotate on the guide wheels, and the second support 7 can guide the spent fuel The rods 5 support and do not hinder the rotation of the spent fuel rods 5 . Of course, the second support member 7 can also be set as a height-adjustable part, so as to adapt to different types or different diameters of spent fuel rods 5 .

The first support member 6 and the second support member 7 are not necessarily used at the same time. According to the length of the spent fuel rod 5, only the second support member 7 can be used. If the length of the spent fuel rod 5 only by the second support member 7 is insufficient for stabilization support, you need to use the first support member 6 and the second support member 7 at the same time. The first support member 6 and the second support member 7 work together to ensure that when the length of the spent fuel rod 5 is long, the two ends of the spent fuel rod 5 can be connected to each other. Stable support is performed to ensure that the spent fuel rods 5 can rotate smoothly without eccentric rotation or even falling off from the clamping assembly 1 . Of course, if the length of the spent fuel rods 5 is short, and the length to be cut is also short, in the case that only the holding member 11 can be used for stable holding, there is no need to use the first support member 6 and the second support member 7.

In order to keep the part to be cut of the spent fuel rods 5 in the cutting tool box 3, a through hole 311 is provided in the cutting tool box 3, the center axis of the through hole 311 and the center of the clamping member 11, the first support member 6 and the second The center heights of the two supporting frames 7 are at the same level, so that the spent fuel rods 5 clamped by the clamping assembly 1 pass through the cutting tool box 3, and a through hole 312 is provided on the side wall of the cutting tool box 3, so that the cutting tool box 3 can be cut through holes 312. The cutter 2 passes through the side wall of the cutting tool box 3 , so that the spent fuel rod 5 can be cut. Here, the through hole 312 may be disposed such that its axis is substantially perpendicular to the axis of the through hole 311 .

The present invention does not limit the shape of the through hole 311 and the through hole 312. For example, the through hole 311 can be a circular hole to fit the shape of the spent fuel rod 5, and the through hole 312 can be a square hole to fit the shape of the cutting tool 2 . Here, the gap between the through hole 311 and the spent fuel rod 5 and the gap between the through hole 312 and the cutting tool 2 are as small as possible, so as to maximize the reduction of chips and aerosols generated during the cutting of the spent fuel rod 5 Restricted to cutting tool box 3. After the spent fuel rods 5 pass through the cutting tool box 3 and are clamped and fixed by the clamping assembly 1, the operator operates the cutting tool 2 to enter the cutting tool box 3 through remote control, so as to adjust the spent fuel rods 5 inside the cutting tool box 3. to cut.

In order to cut only the cladding of the spent fuel rods 5, the operator needs to be able to adjust the feeding amount of the cutting tool 2 in the cutting tool box 3 relative to the spent fuel rods 5, and the cutting tool 2 is far away from the cutting tool box 3. One end of the cutting tool 2 is fixed to the tool holder 21, and the tool holder 21 is provided with a hand wheel 211, preferably, the hand wheel 211 is a rudder-shaped hand wheel, and the hand wheel 211 controls the cutting tool 2 in the cutting tool box 3 relative to the spent fuel rod 5 of feed. By adjusting the feed rate, the spent fuel rod 5 itself or its cladding can be cut.

The present invention does not specifically limit the shape and internal structure of the tool holder 21. Preferably, the tool holder 21 is composed of components such as a column, a linear rolling guide, a sliding table, a tool holder, and a lead screw (not shown in detail in the figure). The linear rolling guide is fixed on the datum surface of the column, the guide rail is connected to the sliding table through the guide block, the tool holder with the cutting tool 2 is fixed on the sliding table, and the lead screw is rotated to drive the sliding table to move forward and backward by turning the handwheel 211 , so that the forward and backward movement of the tool holder can be realized and the feed amount of the cutting tool 2 in the cutting tool box 3 can be controlled. The operator can adjust the feeding amount of the cutting tool 2 relative to the spent fuel rods 5 in the cutting tool box 3 by controlling the rotation amount of the hand wheel 211 .

In order to precisely control the feeding amount of the cutting tool 2 relative to the spent fuel rods 5 in the cutting tool box 3, a scale ring is provided below the hand wheel 211, and the scale ring can display the specific feeding amount of the cutting tool 2. There is no specific limitation on the scale ring, for example, the tool feed is 0.02mm for each rotation of 1 grid. Of course, it can also be appropriately scaled according to the actual accuracy requirements. The cutting tool 2 is installed on the tool holder 21. The present invention does not limit the type of the cutting tool 2. For example, a tool that only cuts off the cladding or a tool that cuts off the spent fuel rod core can be selected according to different cutting requirements.

As shown in FIGS. 4 and 5 , the suction filter assembly 33 includes a coarse filter screen (not shown in the drawings), a first filter element 331 disposed downstream of the coarse filter screen, and a filter element 331 disposed downstream of the first filter element 331 . The second filter part 332 and the vacuuming part 333 disposed downstream of the second filter part 332 . The cutting tool box 3 includes a tool box body 31, and a collecting drawer 32 is arranged at the bottom of the tool box body 31. The collecting drawer 32 communicates with the inside of the tool box body 31, and the bottom plate of the collecting drawer 32 includes the above-mentioned coarse filter screen. Here, the present invention does not limit the material of the coarse filter screen. Preferably, the coarse filter screen is a stainless steel filter screen.

The above-mentioned through holes 311 and through holes 312 are opened on the tool box body 31, the spent fuel rods 5 pass through the tool box body 31 and are cut by the cutting tool 2, and the coarse filter screen filters and collects the radioactive chips generated during the cutting process. , the gas containing the aerosol is subjected to the suction of the vacuuming part 333 to filter and absorb the aerosol through the first filtering part 331 and the second filtering part 332, and the vacuuming part 333 discharges the filtered gas, thereby realizing the collection of the aerosol process. The first filter part 331 absorbs and filters the aerosols of larger size, and the second filter part 332 absorbs and filters the aerosols of small size. The first filter part 331 and the second filter part 332 can be used in conjunction with Effective absorption and filtration.

The present invention does not specifically limit the shape, size and material of the tool box body 31. Preferably, the tool box body 31 is a cutting box chamber with a length, width and height of 140 mm. The tool box body 31 faces the side and top of the operating room. The surface is set with transparent lead glass, which helps the operator to observe the spent fuel rods 5, and perform related operations on positioning and cutting the spent fuel rods 5.

The first filter part 331 includes a first filter box 3311 in fluid communication with the tool box body 31 and a first filter 3312 disposed within the first filter box 3311 . The second filter element 332 includes a second filter box 3321 in fluid communication with the first filter box 3311 and a second filter 3322 disposed within the second filter box 3321 .

The present invention does not specifically limit the shape, size and material of the first filter box 3311. For example, the first filter box 3311 is a rectangular box with a length and width of 110 mm and a height of 136 mm. The process of filtering the aerosol by the first filter part 331 is realized by the first filter 3312 in the first filter box 3311 , and the process of filtering the aerosol by the second filter part 332 is through the second filter in the second filter box 3321 3322 conducted. In order to ensure that the gas containing aerosol will not leak during the filtration process, the first filter box 3311 and the second filter box 3321 are connected through the first connecting pipe 3314; The two connecting pipes 3324 are connected. The first filter box 3311 is provided with a first connection port 3313 , the second filter box 3321 is provided with a second connection port 3323 , and the first connection port 3313 and the second connection port 3323 are connected through a first connection pipe 3314 . 5 , the second filter part 332 and the vacuuming part 333 are fixed on the same bracket, for example, can be fixed on the same steel plate to ensure the stability of the connection between the second filter part 332 and the vacuuming part 333 . The first filter box 3311, the second filter box 3321 and the vacuuming component 333 are connected together by two connecting pipes, which enhances the sealing of the connection and ensures that the gas containing aerosols will not leak to the outside during the filtration process.

As shown in FIG. 3 and FIG. 4 , the collecting drawer 32 is connected with the first filter box 3311 through the connecting assembly 4 , and the connecting assembly 4 may include a conical hopper 41 fixedly connected with the bottom of the collecting drawer 32 , which is fixedly connected to the conveying hopper 41 . The first connecting plate 42 of the hopper 41, the second connecting plate 43 fixedly connected to the top of the first filter box 3311, and the pressing bolts 44 penetrating and pressing the first connecting plate 42 and the second connecting plate 43, the second connection Plate 42 may be welded 3311 to the first filter box. The first connecting plate 42 is fixedly connected with the end of the conveying hopper 41 away from the collecting drawer 32. The conveying hopper 41 can be a stainless steel funnel. connection hole. The second connecting plate 43 is attached to the first connecting plate 42, and the second connecting plate 43 is provided with a second connecting hole corresponding to the first connecting hole, so that the tool box body 31 and the first filter box are connected to each other. 3311 is in fluid communication. The pressing bolt 44 can realize the engagement and separation of the first connecting plate 42 and the second connecting plate 43. When the apparatus for cutting the spent fuel rod hot cell according to the present invention is in the working state, the pressing bolt 44 can connect the first connecting plate 42 to the second connecting plate 42. It is tightly coupled with the second connecting plate 43, and when the hot chamber cutting device needs to be maintained or repaired, the first connecting plate 42 and the second connecting plate 43 can be disassembled by loosening the pressing bolt 44.

The connecting assembly 4 is used to connect the collecting drawer 32 and the first filter box 3311 to ensure that the gas containing the aerosol will not leak during the cutting process, thereby ensuring the tightness of the cutting device. Preferably, a gasket is fixed on the first connecting plate 42 , and a gasket is also fixed on the second connecting plate 43 , and the gasket on the first connecting plate 42 is in close contact with the gasket on the second connecting plate 43 , the pressing bolt 44 compresses the first connecting plate 42 and the second connecting plate 43, thereby pressing the gasket on the first connecting plate 42 and the gasket on the second connecting plate 43 together, increasing the cutting device air tightness.

The cutting device of this embodiment is used in a hot room, which is a shielded space isolated from the surrounding environment and used for high-radioactive experiments and operations. In order to facilitate the operator to use the manipulator to operate the cutting device, a first handle 321 is fixed on the panel of the collecting drawer 32. The operator operates the manipulator to pull the first handle 321 to pull out the collecting drawer 32 to collect the radioactive chips in the drawer. , and replace the coarse filter screen in the collecting drawer 32 when appropriate. A handle 313 is fixed on the top of the toolbox body 31. When the aerosol collected by the first filter 3312 is saturated, the manipulator is used to unscrew the pressing bolt 44, and the handle 313 is lifted to lift the toolbox body 31, so that the first filter 3312 is saturated. A filter 3312 is replaced. The upper end of the pressing bolt 44 is provided with a "one"-shaped turning handle 441 penetrating the pressing bolt 44 , and the pressing bolt 44 can be turned by rotating the turning handle 441 with a manipulator. A pressure rod 3325 is provided outside the second filter box 3321, and the operator can make a small displacement of one end of the second filter box 3321 by controlling the movement of the pressure rod 3325, so that the second filter 3322 in the second filter box 3321 can be adjusted. Clean or replace.

The following will specifically describe the use method of the spent fuel rod hot cell cutting device according to the embodiments of the present invention.

The spent fuel rods 5 are clamped in the holder 11 by a manipulator, and the spent fuel rods 5 are passed through the through holes 311 of the cutting tool box 3 so that the positions of the spent fuel rods 5 in the axial direction are at the required position At the cutting position, if the spent fuel rod 5 is long, the first support member 6 and/or the second support member 7 may be used to assist it. The hand wheel 211 is rotated by the manipulator through remote control, so that the cutting tool 2 is inserted into the through hole 312 of the cutting tool box 3 until the cutting edge of the cutting tool 2 is close to the surface of the spent fuel rod 5 . Install the collecting drawer 32 under the tool box body 31, turn on the vacuuming part 333, then start the motor 13, the clamping part 11 drives the spent fuel rods 5 to rotate, and the hand wheel 211 is rotated by the manipulator, and the knife is fed slowly until All the claddings of the spent fuel rods 5 are cut off, or the entire spent fuel rods 5 are cut off. After the cutting is completed, the motor 13 and the vacuuming part 333 are turned off, the hand wheel 211 is rotated by the manipulator to reset the cutting tool 2 and the remaining spent fuel rods 5 are removed. The collection drawer 32 is removed by a manipulator, the chips in it are poured into the collection bucket of radioactive solid waste, and the coarse filter in the collection drawer 32 can be replaced at an appropriate time.

During the service life of the spent fuel rod hot cell cutting device according to the present invention, various components of the cutting device may be regularly inspected or replaced, especially the coarse filter screen, the first filter 3312 and the second filter 3322. If the concentration of aerosols adsorbed in the first filter 3312 and the second filter 3322 is found to have reached saturation during the inspection process, or an alarm state occurs, the first filter 3312 or/and the second filter can be adjusted by a manipulator. 3322 for replacement.

The cutting device shown in the embodiment of the present invention can inclusively collect and absorb radioactive cuttings and aerosols generated during the cutting process of the highly radioactive spent fuel rods 5 . The feeding amount of the cutting tool 2 is controlled by the rotation of the hand wheel 211 controlled by the manipulator, so that only the cladding of the spent fuel rod 5 can be cut without cutting the pellets as required, thereby greatly reducing the generation of radioactive chips. The coarse filter screen in the cutting tool box 3 collects the chips generated during the cutting process; the combination of the first filter part 331 and the second filter part 332 can effectively absorb and filter the aerosols generated during the cutting process. The collection of chips and the absorption of aerosols can greatly reduce the damage to the hot chamber during the cutting process of the spent fuel rod 5, and reduce the cost of decontamination and operation of the hot chamber. Meanwhile, in the embodiment of the present invention, in order to facilitate the operator to use the manipulator to perform remote operation, the related components of the thermal chamber are optimized and designed to facilitate the work of the manipulator.

The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all Equivalent technical solutions also belong to the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims (10)

1. A spent fuel rod hot cell cutting device, comprising: a clamping assembly for clamping spent fuel rods; and A cutting tool, which is used for cutting the spent fuel rod, characterized in that: The spent fuel rod hot cell cutting device further includes a cutting tool box, the cutting tool is arranged in the cutting tool box, and the chips generated during the cutting process are collected in the cutting tool box, and the cutting tool box further includes The suction filter assembly is used for suction filtration of the aerosol generated during the cutting process. 2. The spent fuel rod hot cell cutting device according to claim 1, wherein: A through hole is provided in the cutting tool box, so that the spent fuel rods clamped by the clamping assembly pass through the cutting tool box, and a through hole is provided on the side wall of the cutting tool box, so that the The cutting tool penetrates the side wall of the cutting tool box, so that the spent fuel rod can be cut. 3. The spent fuel rod hot cell cutting device according to claim 2, wherein: an end of the cutting tool away from the cutting tool box is fixed to the tool holder; The tool holder is provided with a hand wheel, and the hand wheel controls the feeding amount of the cutting tool relative to the spent fuel rod in the cutting tool box. 4. The spent fuel rod hot cell cutting device according to claim 1, wherein: The suction filter assembly includes a coarse filter screen, a first filter element disposed downstream of the coarse filter screen, a second filter element disposed downstream of the first filter element, and a second filter element disposed in the downstream downstream vacuuming components. 5. The spent fuel rod hot cell cutting device according to claim 4, characterized in that: The cutting tool box comprises a tool box body, a collecting drawer is arranged at the bottom of the tool box body, and the collecting drawer is communicated with the inside of the tool box body; The bottom plate of the collection drawer includes the coarse filter screen. 6. The spent fuel rod hot cell cutting device according to claim 5, characterized in that: the first filter component includes a first filter box in fluid communication with the tool box body and a first filter disposed within the first filter box; The second filter component includes a second filter box in fluid communication with the first filter box and a second filter disposed within the second filter box. 7. The spent fuel rod hot cell cutting device according to claim 6, wherein: The collecting drawer is connected with the first filter box through a connecting assembly, and the connecting assembly includes: a conical hopper fixedly connected with the bottom of the collecting drawer; A first connecting plate, the first connecting plate is fixedly connected with the end of the hopper that is away from the collecting drawer, and the first connecting plate is provided with a corresponding outlet of the hopper. the first connection hole; A second connecting plate, the second connecting plate is fixedly connected to the top of the first filter box, the second connecting plate is attached to the first connecting plate, and is on the second connecting plate opening a second connection hole corresponding to the first connection hole; and A pressing bolt penetrates through and presses the first connecting plate and the second connecting plate. 8. The spent fuel rod hot cell cutting device according to claim 7, wherein: the first filter box and the second filter box are connected by a first connecting pipe; and The suction inlet of the vacuuming component is connected with the second filter box through a second connecting pipe. 9. The spent fuel rod hot cell cutting device according to claim 1, characterized in that: The cutting device further includes a height-adjustable first support for supporting the first ends of the spent fuel rods; and A second support member for supporting the second end of the spent fuel rod. 10. The spent fuel rod hot cell cutting device according to claim 1, wherein: The clamping assembly includes a clamping member for clamping the spent fuel rod; a transmission for driving the gripper to move; and and a motor that drives the transmission in a driving manner.

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