Storage device for radioactive waste in hot cell

Abstract

The invention provides a storage device for radioactive waste in a hot cell. The storage device comprises: a cylindrical bottom; the barrel-shaped main body is arranged on the cylindrical bottom and fixedly connected with the cylindrical bottom, and the barrel-shaped main body is provided with an inner cavity for containing a waste bag of radioactive waste; an inner cavity of the cylindrical bottom is communicated with an inner cavity of the barrel-shaped main body; the first movable cover is arranged on the outer side of a barrel body of the barrel-shaped main body and is detachably connected with the barrel-shaped main body; the first movable cover is arranged on the outer side of a barrel body of the barrel-shaped main body, the second movable cover is arranged on the outer side of the barrel body of the barrel-shaped main body and detachably connected with the barrel-shaped main body, and the first movable cover and the second movable cover are oppositely arranged and locked or opened through a connecting piece; the fixing ring is detachably connected with the barrel-shaped main body, and the fixing ring is located at the top of the barrel-shaped main body. The problem of post or ground contamination caused by dumping of radioactive waste bags can be prevented, and the safety and cleanliness of radioactive waste storage are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of radioactive waste, and also relates to a storage device for radioactive waste in a hot cell. Background Art

[0002] Spent fuel (also known as irradiated nuclear fuel) is the radioactive nuclear fuel unloaded after use in a nuclear reactor. During the process of spent fuel reprocessing, analysis operations run through the entire technological process. Among them, due to the high radioactivity, high-level analysis operations can only be carried out in a hot cell. Radioactive waste such as sample bottles, beakers, crucibles, etc. generated during the analysis operations in the hot cell need to be uniformly transferred out by a horizontal sealed transfer device. There is only one radioactive waste transfer port in the high-level analysis hot cell, but there are multiple positions in the hot cell and they are far from the radioactive waste transfer port. It is difficult to immediately transfer the radioactive waste generated at the positions to the radioactive waste transfer port. Therefore, the radioactive waste generated at the positions needs to be temporarily stored in radioactive waste bags and then uniformly transferred for treatment.

[0003] The use of radioactive waste bags mainly has the following problems: The radioactive waste bags are placed on the floor of the hot cell, occupying a large space; due to their soft material, the openings of the waste bags droop, making it difficult to use a manipulator to load the waste; in addition, the waste bags are prone to tipping over, causing waste spillage and contamination of the positions. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a storage device for radioactive waste in a hot cell to avoid the problem of contamination of the hot cell caused by tipping over of radioactive waste bags.

[0005] To solve the above technical problem, the technical solution of the present invention is as follows:

[0006] The present invention provides a storage device for radioactive waste in a hot cell, including:

[0007] A cylindrical bottom;

[0008] A barrel-shaped main body disposed on the cylindrical bottom and fixedly connected to the cylindrical bottom. The barrel-shaped main body has an inner cavity for accommodating a waste bag of radioactive waste; the inner cavity of the cylindrical bottom is communicated with the inner cavity of the barrel-shaped main body;

[0009] A first movable cover disposed on the outer side of the barrel body of the barrel-shaped main body and detachably connected to the barrel-shaped main body;

[0010] A second movable cover disposed on the outer side of the barrel body of the barrel-shaped main body and detachably connected to the barrel-shaped main body. The first movable cover and the second movable cover are oppositely arranged and are locked or opened through a connecting member;

[0011] A fixing ring is detachably connected to the barrel-shaped body, and the fixing ring is located on the top of the barrel-shaped body.

[0012] Optionally, the outer diameter of the cross-section of the cylindrical bottom is greater than the outer diameter of the cross-section of the barrel-shaped body, and the inner diameter of the cross-section of the cylindrical bottom is the same as the inner diameter of the cross-section of the barrel-shaped body.

[0013] Optionally, the connecting member includes a movable buckle provided on the first movable cover and a fixed buckle provided on the second movable cover, and the movable buckle is snap-connected with the fixed buckle.

[0014] Optionally, the movable buckle includes an integrally formed pressing portion and a clamping portion, the clamping portion is provided with a through hole; the fixed buckle is provided with a clamping hole, and an elastic locking tongue is provided on the inner wall of the clamping hole; the movable buckle and the fixed buckle are locked or opened by the through hole and the elastic locking tongue.

[0015] Optionally, the fixing ring is provided with a groove, and the top of the barrel-shaped body is embedded in the groove.

[0016] Optionally, one end of a radioactive waste bag is fixed between the top of the barrel-shaped body and the fixing ring, and the other end of the radioactive waste bag is located inside the barrel-shaped body.

[0017] Optionally, the storage device further includes an expansion block, and the expansion block is located in the radioactive waste bag.

[0018] Optionally, the expansion block includes a piston and a push rod, and the push rod is arranged on the piston.

[0019] Optionally, the piston is placed at the bottom of the barrel-shaped body and contacts the cylindrical bottom.

[0020] Optionally, the cylindrical bottom and the barrel-shaped body are both made of polytetrafluoroethylene.

[0021] The above solution of the present invention includes at least the following beneficial effects:

[0022] The above scheme of the present invention provides a barrel-shaped body capable of accommodating radioactive waste bags on a cylindrical bottom, and provides a first movable cover and a second movable cover that are detachably connected on the outside of the barrel body of the barrel-shaped body, and the first movable cover and the second movable cover can be locked or opened through a connecting piece, so as to facilitate the placement or removal of the radioactive waste bag in the barrel-shaped body; in addition, a fixing ring is provided on the top of the barrel-shaped body to fix the radioactive waste bag in the barrel-shaped body, so as to prevent the problem of contamination of the workstation or the ground caused by the dumping of the radioactive waste bag, thereby improving the safety, reliability and cleanliness of radioactive waste storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a storage device for radioactive waste in a hot cell in an embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of a barrel-shaped main body arranged on a cylindrical bottom in an embodiment of the present invention;

[0025] Figure 3 It is a schematic structural diagram of a first movable cover in an embodiment of the present invention;

[0026] Figure 4 It is a schematic structural diagram of a second movable cover in an embodiment of the present invention;

[0027] Figure 5 It is a schematic structural diagram of a movable buckle in an embodiment of the present invention;

[0028] Figure 6 It is a schematic structural diagram of a fixed buckle in an embodiment of the present invention;

[0029] Figure 7 It is a schematic structural diagram of a fixed ring in an embodiment of the present invention;

[0030] Figure 8 It is a schematic structural diagram of an expansion block in an embodiment of the present invention;

[0031] Explanation of reference numerals: 1 - cylindrical bottom, 2 - barrel-shaped main body, 21 - first rotary fixing member, 22 - second rotary fixing member, 3 - first movable cover, 31 - first pin shaft, 32 - movable buckle connecting member, 4 - second movable cover, 41 - second pin shaft, 42 - fixed buckle connecting member, 5 - connecting member, 51 - movable buckle, 511 - pressing portion, 512 - clamping portion, 5121 - through hole, 52 - fixed buckle, 521 - clamping hole, 5211 - elastic locking tongue, 6 - fixed ring, 61 - groove, 7 - radioactive waste bag, 8 - expansion block, 81 - piston, 82 - push rod. Detailed implementation manners

[0032] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0033] As Figures 1 to 7 shown, an embodiment of the present invention provides a storage device for radioactive waste in a hot cell, including:

[0034] a cylindrical bottom 1;

[0035] A barrel-shaped body 2 is disposed on the cylindrical bottom 1 and fixedly connected to the cylindrical bottom 1, wherein the barrel-shaped body 2 has an inner cavity for accommodating a waste bag of radioactive waste; the inner cavity of the cylindrical bottom 1 is communicated with the inner cavity of the barrel-shaped body 2;

[0036] A first movable cover 3 is disposed outside the barrel body of the barrel-shaped main body 2 and is detachably connected to the barrel-shaped main body 2;

[0037] A second movable cover 4 is disposed outside the barrel body of the barrel-shaped main body 2 and is detachably connected to the barrel-shaped main body 2. The first movable cover 3 and the second movable cover 4 are disposed opposite to each other and are locked or opened by a connecting member 5.

[0038] A fixing ring 6 is detachably connected to the barrel-shaped body 2 , and the fixing ring 6 is located on the top of the barrel-shaped body 2 .

[0039] The storage device for radioactive waste in a hot room proposed in an embodiment of the present invention comprises a barrel-shaped main body capable of accommodating radioactive waste bags on a cylindrical bottom, and a first movable cover and a second movable cover which are detachably connected are arranged on the outer side of the barrel body of the barrel-shaped main body, and the first movable cover and the second movable cover can be locked or opened by a connecting piece, so as to facilitate the placement or removal of the radioactive waste bag in the barrel-shaped main body; in addition, a fixing ring is arranged on the top of the barrel-shaped main body to fix the radioactive waste bag in the barrel-shaped main body, so as to prevent the problem of contamination of the workstation or the ground caused by the dumping of the radioactive waste bag, thereby improving the safety, reliability and cleanliness of radioactive waste storage.

[0040] like Figure 1 As shown, in an optional embodiment of the present invention, the cross-sectional outer diameter of the cylindrical bottom 1 is larger than the cross-sectional outer diameter of the barrel-shaped body 2 , and the cross-sectional inner diameter of the cylindrical bottom 1 is the same as the cross-sectional inner diameter of the barrel-shaped body 2 .

[0041] Specifically, the cylindrical bottom and the barrel-shaped body are both cylindrical, and the barrel-shaped body is connected from top to bottom. The inner diameter is consistent with the inner barrel diameter of the horizontal sealed transfer device for solid waste treatment in the hot room, which can ensure that the internal waste storage space is large enough after the radioactive waste bag is fixed, and at the same time ensure that the waste bag is half of the inner barrel space of the horizontal sealed transfer device after it is filled, and ensure that the weight of the waste bag after it is filled will not exceed the manipulator clamping weight limit, which is convenient for the manipulator to operate during the waste transfer process in the hot room and improves work efficiency. The cylindrical bottom serves as a base, and its diameter is larger than the diameter of the barrel-shaped body, which can ensure the overall stability of the storage device, reduce the possibility of tipping, and improve the safety of the storage device.

[0042] like Figure 1 As shown, in an optional embodiment of the present invention, the first movable cover 3 and the second movable cover 4 are both rotatably and detachably connected to the barrel-shaped body 2 .

[0043] Specifically, both the first movable cover and the second movable cover are rotatably and detachably connected to the barrel-shaped main body through hinges. The first movable cover and the second movable cover are used to open and close during the use of the storage device. The first movable cover and the second movable cover are connected to the barrel-shaped main body through hinges to ensure smooth opening and closing. Specifically, when implemented, the maximum opening angle of both the first movable cover and the second movable cover is 180°, which can ensure the smooth transfer of the waste bag.

[0044] Such as Figures 1 to 4 , a first rotary fixing member 21 and a second rotary fixing member 22 are provided on the barrel-shaped main body 2. A first pin shaft 31 is provided on the first movable cover 3, and a second pin shaft 41 is provided on the second movable cover 4. The first pin shaft 31 is inserted into the first rotary fixing member 21, and the second pin shaft 41 is inserted into the second rotary fixing member 22.

[0045] Specifically, the rotary fixing member is provided with a through hole, and the pin shaft is inserted into the through hole. Through the cooperation of the pin shaft and the rotary fixing member, the movable cover can be rotated along the pin shaft, driving the rotation of the movable cover to achieve the purpose of opening and closing the movable cover. Specifically, when implemented, the movable cover and the barrel-shaped main body can also be rotatably connected through a hinge.

[0046] Such as Figure 3 and Figure 4 As shown in, in an alternative embodiment of the present invention, ventilation holes are provided on both the first movable cover 3 and the second movable cover 4.

[0047] Specifically, a plurality of ventilation holes (such as the rectangular holes in Figure 3 and Figure 4 ) are provided on the first movable cover and the second movable cover, which can serve the purpose of ventilation and pressure reduction.

[0048] Such as Figure 1 , Figure 5 and Figure 6 As shown in, in an alternative embodiment of the present invention, the connecting member 5 includes a movable buckle 51 provided on the first movable cover 3 and a fixed buckle 52 provided on the second movable cover 4, and the movable buckle 51 is snap-connected to the fixed buckle 52.

[0049] Specifically, through the snap connection of the movable buckle and the fixed buckle, the first movable cover and the second movable cover can be connected and fixed, preventing the radioactive waste bag from being poured out of the barrel-shaped main body due to the separation of the first movable cover and the second movable cover, improving safety. When the movable buckle and the fixed buckle are separated, the first movable cover and the second movable cover can be opened, facilitating the manipulator to take out the radioactive waste bag from the side of the barrel-shaped main body.

[0050] Such as Figure 1 , Figure 5 andFigure 6 As shown, in an alternative embodiment of the present invention, the movable buckle 51 includes an integrally formed pressing portion 511 and a clamping portion 512, and a through hole 5121 is provided on the clamping portion 512; the fixed buckle 52 is provided with a clamping hole 521, and an elastic locking tongue 5211 is provided on the inner wall of the clamping hole 521; the movable buckle 51 and the fixed buckle 52 are locked or opened through the through hole 5121 and the elastic locking tongue 5211.

[0051] Specifically, the manipulator presses down the pressing portion, causing the clamping portion to lift. When the manipulator releases the pressing portion, the clamping portion falls into the clamping hole of the fixed buckle under the action of gravity. The elastic locking tongue first moves backward under the action of the clamping portion, and then slides into the through hole under the action of elasticity. The clamping portion is locked in the clamping hole, locking the movable buckle and the fixed buckle, and realizing the fixed connection of the first movable cover and the second movable cover. This prevents problems such as the waste bag being dumped and torn when the first movable cover and the second movable cover are opened during use.

[0052] Here, a movable buckle connecting member 32 can be provided on the first movable cover for fixing the movable buckle 51, and a fixed buckle connecting member 42 can be provided on the second movable cover 4 for connecting with the fixed buckle 52.

[0053] As Figure 7 shown, the fixing ring 6 is provided with a groove 61, and the top of the barrel-shaped main body 2 is embedded in the groove 61.

[0054] Specifically, the inner and outer diameters of the fixing ring are the same as the inner and outer diameters of the top of the main body. The fixing ring can be sleeved on the top of the main body through the groove, and the top of the main body is embedded in the groove, realizing the fixation of the opening of the waste bag.

[0055] It should be noted that in Figure 1 , the fixing ring 6 presses on the radioactive waste bag 7, and the opening of the radioactive waste bag 7 extends from the top of the barrel-shaped main body 2 to the outside of the barrel-shaped main body 2.

[0056] As Figure 1 shown, one end of the radioactive waste bag 7 is fixed between the top of the barrel-shaped main body 2 and the fixing ring 6, and the other end of the radioactive waste bag 7 is located inside the barrel-shaped main body 2.

[0057] Specifically, the length of the radioactive waste bag can be greater than the height of the barrel-shaped main body to ensure that the waste bag can be sleeved on the barrel-shaped main body. The material of the waste bag is LLDPE (linear low-density polyethylene) with excellent toughness and strong tear resistance. The structure is designed as a high-thickness double-layer structure, which can withstand the impact of sharp objects such as broken beakers in the hot cell and prevent the contamination of the interior and bottom of the hot cell caused by waste leakage. The opening of the waste bag is provided with a drawstring and a draw cord made of elastic material for tightening / opening the bag mouth. By placing one end of the radioactive waste bag at the bottom of the barrel-shaped main body (or the bottom of the hot cell) and fixing the other end between the top of the barrel-shaped main body and the fixing ring, the purpose of fixing the radioactive waste bag in the storage device is achieved, which is convenient for putting in radioactive waste and prevents the opening of the radioactive waste bag from slipping into the interior of the barrel-shaped main body, improving the reliability during use.

[0058] As Figure 8 shown, in an alternative embodiment of the present invention, the storage device further includes an expansion block 8, and the expansion block 8 is located inside the radioactive waste bag 7.

[0059] Specifically, after the radioactive waste bag is fixed inside the barrel-shaped main body, the internal volume of the waste bag is expanded by using the expansion block to improve the space utilization rate of the waste bag. In a specific embodiment, the expansion block can be a disposable item transported together with the radioactive waste bag, or the expansion block can be taken out for the next expansion after the internal volume of the waste bag is expanded.

[0060] As Figure 8 shown, in an alternative embodiment of the present invention, the expansion block 8 includes a piston 81 and a push rod 82, and the push rod 82 is arranged on the piston 81.

[0061] Specifically, the diameter of the piston is kept consistent with the inner diameter of the barrel-shaped main body to ensure that the piston can be inserted into the barrel-shaped main body along the inner wall of the barrel-shaped main body to fully expand the radioactive waste bag. In addition, through the push rod arranged on the piston, it is convenient for the manipulator to grasp the push rod to place and remove the piston, improving the work efficiency.

[0062] In an alternative embodiment of the present invention, the piston 81 is placed at the bottom of the barrel-shaped main body 2 and contacts the cylindrical bottom 1.

[0063] Specifically, the piston is placed at the bottom of the radioactive waste bag (the bottom of the radioactive waste bag contacts the bottom of the hot cell or the bottom of the barrel-shaped main body) to achieve full expansion of the radioactive waste bag. In order to achieve full expansion of the radioactive waste bag, the shape of the piston is set to be the same as the shape of the barrel-shaped main body. For example, if the barrel-shaped main body is cylindrical, the piston is also cylindrical, and the diameter of the piston is kept consistent with the inner diameter of the barrel-shaped main body to ensure that the piston can be inserted into the barrel-shaped main body along the inner wall of the barrel-shaped main body to achieve the purpose of fully expanding the radioactive waste bag.

[0064] In an alternative embodiment of the present invention, the materials of the cylindrical bottom 1 and the barrel-shaped body 2 are both polytetrafluoroethylene.

[0065] Specifically, polytetrafluoroethylene is resistant to acid and alkali corrosion. Using polytetrafluoroethylene for the base and the main body can improve the overall lifespan of the storage device.

[0066] As Figures 1 to 8 shown, a specific embodiment of the storage device for radioactive waste in a hot cell proposed in the embodiment of the present invention includes:

[0067] A barrel-shaped body 2 is arranged on the cylindrical bottom 1. A first movable cover 3 and a second movable cover 4 are connected to the barrel-shaped body 2 by hinges, and the first movable cover 3 and the second movable cover 4 are locked or opened by a connecting member 5. Place the storage device in the hot cell. The operating manipulator presses the pressing part 511 of the movable buckle 51 on the first movable cover 3, causing the clamping part 512 to lift. The operating manipulator releases the pressing part 511, causing the clamping part 512 to fall and embed into the clamping hole 521 of the fixed buckle 52 on the second movable cover 4. The elastic locking tongues 5211 on the left and right sides inside the clamping hole 521 are triggered and accurately inserted into the through hole 5121 of the clamping part. The movable buckle 51 is fixed in the clamping hole 521 of the fixed buckle 52, realizing the locking of the first movable cover 3 and the second movable cover 4. Then, place the bottom of the radioactive waste bag 7 into the bottom of the barrel-shaped body 2 (when the cylindrical bottom 1 and the barrel-shaped body 2 are hollow structures, the bottom of the radioactive waste bag 7 contacts the hot cell). The opening of the radioactive waste bag 7 is fixed between the groove of the barrel-shaped body 2 and the fixed ring 6 to prevent slipping. After fixing the radioactive waste bag 7, the operating manipulator grasps the push rod 82 and presses the expansion block 8 into the barrel-shaped body 2 from top to bottom. The piston 81 pushes the bottom of the radioactive waste bag 7 to expand along the inner wall of the barrel-shaped body 2 towards the bottom, improving the space utilization rate of the waste bag. The operating manipulator places the radioactive waste generated during the analysis process in the radioactive waste bag 7. After the waste is filled to be flush with the upper part of the barrel-shaped body 2, it is processed.

[0068] The operating manipulator moves the fixed ring 6 away from the top of the barrel-shaped body 2, pulls up the edge of the radioactive waste bag 7, presses the pressing part 511 of the movable buckle 51 downwards, causing the pressing part 511 to lift from the clamping hole 521 of the fixed buckle 52, releasing the locking of the movable buckle 51 and the fixed buckle 52. The first movable cover 3 and the second movable cover 4 are separated and opened 180° to both sides respectively. Tighten the bag mouth of the radioactive waste bag 7 and pull the radioactive waste bag 7 out from the openings of the first movable cover 3 and the second movable cover 4, transfer it to the radioactive waste transfer port, and load it into the inner barrel of the horizontal sealed transfer device to complete the subsequent waste discharge operation.

[0069] The storage device for radioactive waste in a hot chamber proposed in an embodiment of the present invention forms a side opening by arranging two movable covers on the side of a barrel-shaped main body. After the waste bag is full, there is no need to operate a manipulator to lift the waste bag from the top, and the waste bag can be pulled out from the side, which is convenient for personnel to operate while preventing damage to the manipulator; the cylindrical bottom, the barrel-shaped main body, and the two movable covers of the storage device are all made of polytetrafluoroethylene, and the interior of the cylindrical bottom and the barrel-shaped main body are penetrated from top to bottom, the overall weight is light, and it is easy to move. If the waste bag is broken and causes the interior of the storage device and the hot chamber at the bottom to be contaminated, the storage device can be moved for decontamination operation.

[0070] The storage device for radioactive waste in a hot room provided in an embodiment of the present invention prevents dirt caused by dumping of waste bags by placing waste bags in the storage device, thereby ensuring that the hot room is clean and tidy. This is conducive to optimizing the layout of hot room positions, facilitating personnel operations, and reducing unnecessary decontamination work.

[0071] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A storage device for radioactive waste in a hot cell, characterized in that, Comprising: A cylindrical bottom (1); A barrel-shaped body (2) provided on the cylindrical bottom (1) and fixedly connected to the cylindrical bottom (1), the barrel-shaped body (2) having an inner cavity for accommodating a waste bag of radioactive waste; the inner cavity of the cylindrical bottom (1) communicates with the inner cavity of the barrel-shaped body (2); A first movable cover (3) provided on the outer side of the barrel body of the barrel-shaped body (2) and detachably connected to the barrel-shaped body (2); A second movable cover (4) provided on the outer side of the barrel body of the barrel-shaped body (2) and detachably connected to the barrel-shaped body (2), the first movable cover (3) and the second movable cover (4) are oppositely arranged and locked or opened by a connecting member (5); A fixing ring (6) detachably connected to the barrel-shaped body (2), the fixing ring (6) is located at the top of the barrel-shaped body (2).

2. The storage device for radioactive waste in a hot cell according to claim 1, characterized in that, The outer diameter of the cross-section of the cylindrical bottom (1) is greater than the outer diameter of the cross-section of the barrel-shaped body (2), and the inner diameter of the cross-section of the cylindrical bottom (1) is the same as the inner diameter of the cross-section of the barrel-shaped body (2).

3. The storage device for radioactive waste in a hot cell according to claim 1, characterized in that, The connecting member (5) includes a movable buckle (51) provided on the first movable cover (3) and a fixed buckle (52) provided on the second movable cover (4), and the movable buckle (51) is snap-connected to the fixed buckle (52).

4. The storage device for radioactive waste in a hot cell according to claim 3, characterized in that, The movable buckle (51) includes a pressed part (511) and a snap part (512) integrally formed, and a through hole (5121) is provided on the snap part (512); the fixed buckle (52) is provided with a snap hole (521), and an elastic locking tongue (5211) is provided on the inner wall of the snap hole (521); the movable buckle (51) and the fixed buckle (52) are locked or opened through the through hole (5121) and the elastic locking tongue (5211).

5. The storage device for radioactive waste in a hot cell according to claim 1, characterized in that, The fixing ring (6) is provided with a groove (61), and the top of the barrel-shaped body (2) is embedded in the groove (61).

6. The storage device for radioactive waste in a hot cell according to claim 1, characterized in that, One end of a radioactive waste bag (7) is fixed between the top of the barrel-shaped body (2) and the fixing ring (6), and the other end of the radioactive waste bag (7) is located inside the barrel-shaped body (2).

7. The storage device for radioactive waste in a hot cell according to claim 6, characterized in that, It further includes an expansion block (8), and the expansion block (8) is located inside the radioactive waste bag (7).

8. The storage device for radioactive waste in a hot cell according to claim 7, characterized in that, The expansion block (8) includes a piston (81) and a push rod (82), and the push rod (82) is arranged on the piston (81).

9. The storage device for radioactive waste in a hot cell according to claim 8, characterized in that, The piston (81) is placed at the bottom of the barrel-shaped body (2) and contacts the cylindrical bottom (1).

10. The storage device for radioactive waste in a hot cell according to claim 1, characterized in that, The materials of the cylindrical bottom (1) and the barrel-shaped body (2) are both polytetrafluoroethylene.

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