Transportation container for radioactive waste barrel

Abstract

The invention discloses a transport container for a radioactive waste barrel, the transport container comprises a top cover, a barrel body and a base, the barrel body is mounted above the base, the top cover is mounted above the barrel body, the top cover is used for sealing the barrel body, and the radioactive waste barrel is placed in the barrel body. The top cover comprises a cover body and a lifting part above the cover body, the lifting part is used for lifting the top cover, and a plurality of long slotted holes are formed in the cover body; the barrel body comprises a barrel body, a barrel body flange plate, a positioning rib plate, a wrap angle and a plurality of lifting lugs, the barrel body flange plate is fixed at the top end of the barrel body, the barrel body flange plate and the cover body are connected at any angle through a long slotted hole by using a bolt, the positioning rib plate is arranged at the lower end of the inner side wall of the barrel body, the wrap angle is arranged on the outer side of the barrel body flange plate, and the lifting lugs are fixed on the outer side of the barrel body; the base comprises a base plate and a plurality of forklift grooves, and the forklift grooves are fixed below the base plate. The transportation container is safe, stable, easy to load and transport, shockproof and capable of being integrally transferred.

Description

Technical Field

[0001] The invention relates to the technical field of radioactive article transport equipment, and in particular to a transport container for radioactive waste barrels. Background Art

[0002] Nuclear power plants generate a large amount of low-level radioactive waste during their daily operations. In order to protect the public from excessive doses and to protect the human living environment, these radioactive wastes need to be safely disposed of. According to the national standard GB 11928-1989 "Regulations on the Temporary Storage of Low- and Intermediate-Level Radioactive Solid Wastes", the temporary storage time of wastes should not exceed 5 years. A large amount of low-level radioactive wastes need to be transported from nuclear power plants to waste disposal plants.

[0003] There are a large number of 400L radioactive waste steel drums with outer surface radiation levels of 2-30mSv / h in various nuclear power bases. The radiation level on the outer surface of these steel drums does not meet the requirements of the national standard GB11806-2019 "Safety Regulations for the Transportation of Radioactive Materials" and cannot be transported directly. Therefore, it is crucial to design low-level radioactive waste transport containers that comply with regulations and standards.

[0004] The existing patent CN111916244A discloses a shielding steel box, which includes a steel box of a rectangular structure, the steel box is detachably connected to a box cover, a shielding box for loading a solid waste barrel is arranged in the steel box, a top cover is detachably connected to the shielding box, the shielding box and the top cover are both metals with stable properties, and a pressing piece is arranged in the steel box to keep the relative position between the shielding box and the steel box stable. The present invention has the effect of improving the shielding of the existing radioactive solid waste transportation steel box.

[0005] The existing patent CN115662671A discloses an assembled nuclear waste treatment device, which is in the shape of a hollow cylindrical barrel and includes a seating portion, a connecting portion and a covering portion which are detachably connected in sequence from bottom to top. The seating portion includes a base and a first connecting section arranged on the base, and a plurality of grooves are evenly arranged on the outer periphery of the base. The connecting portion includes a second connecting section which can be sealably sleeved on the outside of the first connecting section, and grooves are correspondingly arranged on the outer periphery of the second connecting section. The covering portion includes a third connecting section, and a sealable top cover and an exhaust hole are provided on the top of the third connecting section, and a retractable fixing belt is provided in the groove. In this scheme, the overall structural design of the cylindrical barrel-shaped treatment device is maintained to meet the needs of storing waste barrels which are also cylindrical barrel-shaped.

[0006] At present, most steel boxes with shielding layers are used to transport 400L waste barrels, and the shielding layer adopts an embedded welded shielding box. This steel box is relatively low in height, has a weak shielding capacity on the top cover, and is not very applicable. During the nuclear power loading operation, the top cover cannot be closed. Because the door of the waste storage of some nuclear power plants is small and the transportation tools cannot enter, each waste package needs to be transferred to the operation warehouse in turn. The operation is time-consuming and cumbersome, and the exposure dose of the staff is large. In addition, this type of steel box has some problems in the review of the regulatory department. The steel box has not been tested before leaving the factory, and there are no fixed safeguard measures. It has been required to redesign and test for special problems. It has defects such as scientific testing, no effective fixing measures, no in-plant transfer capacity, and no function to prevent accident damage. Summary of the invention

[0007] Based on the above technical problems, the present invention proposes a transport container for radioactive waste barrels, which solves the problems in the prior art of lack of high-dose low-level radioactive waste barrel transport containers, high radiation risk in the transportation of radioactive waste barrels, complex operation, and weak accident tolerance.

[0008] To achieve the above object, the present invention proposes a transport container for radioactive waste barrels. The technical solution is as follows:

[0009] A transport container for radioactive waste barrels, comprising a barrel body and a top cover above the barrel body, wherein the barrel body comprises a barrel body, a barrel body flange, a positioning rib plate and a wrap angle, the barrel body flange is fixed to the top end of the barrel body, the wrap angle is fixed to the outside of the barrel body flange, the positioning rib plate is fixed to the inner side wall of the barrel, and the top cover and the barrel body are connected via the barrel body flange.

[0010] Furthermore, the barrel includes a plurality of wrap angles.

[0011] Furthermore, the multiple wrap angles are fixed at equal intervals on the outer side of the cylinder flange.

[0012] Furthermore, the corner wrap is an arc-shaped square tube.

[0013] Furthermore, the positioning rib is fixed to the lower end of the inner wall of the cylinder.

[0014] Furthermore, the positioning rib plate is an annular plate or a plurality of arc-shaped plates, and the top end of the positioning rib plate is an inclined surface.

[0015] Furthermore, the top cover includes a cover body and a lifting component above the cover body, and the edge of the lower surface of the cover body is a sloped step structure.

[0016] Furthermore, the cover body is provided with a plurality of slots, the slots are used to connect the cover body with the flange of the cylinder body, and the slots are arc-shaped long slots.

[0017] Furthermore, the lifting component includes a ring plate and a top plate, the top plate is fixed to the upper surface of the cover body, and the ring plate is sleeved and fixed to the outer side of the top plate;

[0018] A clamping groove is provided at the lower end of the inner side wall of the ring plate, and an annular edge is provided at the upper end of the inner side wall of the ring plate;

[0019] A plurality of semicircular through holes are arranged at the lower end of the side wall of the ring plate near the upper surface of the top plate.

[0020] Furthermore, the upper surface edge of the cylinder flange is a bevel step structure.

[0021] Furthermore, it also includes a base, which includes a base plate and a plurality of forklift grooves, and the forklift grooves are fixed below the base plate.

[0022] Furthermore, the barrel body also includes a plurality of lifting ears, which are fixed to the outer side wall of the barrel body and correspond to between two adjacent wrap angles.

[0023] Furthermore, the lifting lug is a plate type lifting lug.

[0024] Based on the above technical solution, the present invention has at least the following beneficial effects:

[0025] 1. The present invention proposes a transport container for radioactive waste barrels, in which the barrel flange and the top cover are connected and cooperated to form a containment structure. The barrel is the main shielding layer, and a positioning rib plate is arranged inside the barrel to fix the waste barrel. The transport container is safe and stable, and the loading and transportation operations are simple.

[0026] 2. The present invention proposes a transport container for radioactive waste barrels, wherein the top cover is provided with a long hole groove, which can be connected and matched with the barrel body at any angle, and a lifting component is provided above the top cover to facilitate the lifting of the top cover.

[0027] 3. The present invention proposes a transport container for radioactive waste barrels, wherein the barrel body is provided with wrapping corners and lifting ears. The wrapping corners can effectively prevent the barrel body from being deformed due to falling, and the lifting ears can realize the overall lifting and transfer of the transport container.

[0028] 4. The transport container for radioactive waste barrels proposed by the present invention has a forklift slot designed at the bottom to facilitate the overall transfer of the transport container. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 A schematic structural diagram of a transport container for radioactive waste barrels is proposed for the present invention;

[0031] Figure 2 A schematic structural diagram of a transport container for radioactive waste barrels is proposed for the present invention;

[0032] Figure 3 A vertical cross-sectional schematic diagram of a transport container for radioactive waste barrels is proposed for the present invention.

[0033] Figure numerals: 10-top cover, 11-cover body, 12-ring plate, 13-top plate, 14-long slot hole, 20-cylinder body, 21-cylinder body, 22-cylinder body flange, 23-positioning rib plate, 24-angle wrap, 25-lifting ear, 30-base, 31-base plate, 32-forklift slot. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] The present invention is further described in detail below in conjunction with specific embodiments. These embodiments should not be construed as limiting the scope of protection claimed by the present invention.

[0036] Example

[0037] In order to solve the problems in the prior art of lack of high-dose low-level radioactive waste barrel transport containers and high radiation risk, complex operation and weak accident tolerance in the transportation of radioactive waste barrels, the present invention proposes a transport container for radioactive waste barrels.

[0038] To achieve the above-mentioned purpose, the present invention provides a transport container for radioactive waste barrels, which is used to load and transport radioactive waste barrels. Figure 1-3 The figure shows the structure of the transport container. Figure 1 As shown, the transport container includes a top cover 10, a barrel 20 and a base 30. The barrel 20 is installed above the base 30. The top cover 10 is installed above the barrel 20 to seal the barrel 2. The barrel 2 is a hollow cylindrical barrel used to place radioactive waste barrels.

[0039] For details, see Figure 1 and Figure 2As shown, the top cover 10 includes a cover body 11 and a lifting component above the cover body 11, and the lifting component includes a ring plate 12 and a top plate 13. Among them, the cover body 11 is a circular flat plate, and the top plate 13 is also a circular flat plate. The diameter of the top plate 13 is smaller than the diameter of the cover body 11. The ring plate 12 is an annular plate, and the thickness of the ring plate 12 is greater than the thickness of the top plate 13. The top plate 13 is fixed to the middle position above the cover body 11. The ring plate 12 is sleeved and fixed on the outside of the top plate 13. The ring plate 12 and the top plate 13 constitute the lifting component of the top cover 10, which is convenient for lifting the top cover 10. A card groove is provided at the lower end of the inner side wall of the ring plate 12, so that the ring plate 12 can be fixedly engaged with the outer side of the top plate 13. An annular edge is provided at the inner upper end of the ring plate 12, which is convenient for lifting by lifting tools. A plurality of semicircular through holes are provided on the side wall of the ring plate 12 close to the upper surface of the top plate 13 to prevent water accumulation in the middle of the lifting component. A plurality of long slot holes 14 are provided near the edge of the cover body 11, through which the top cover 10 and the barrel body 20 can be connected at any angle using M30 bolts.

[0040] Optionally, the edge of the bottom surface of the cover body 11 is designed as an inclined step to facilitate the assembly of the top cover 10 and the barrel body 20.

[0041] For details, see Figure 2 and Figure 3 As shown, the barrel 2 includes a barrel 21, a barrel flange 22, a positioning rib 23, a corner 24 and a lifting lug 25. The barrel 21 is the main shielding layer. The barrel 21 is cylindrical, with a cavity inside and an open top. The side walls and the bottom have a certain thickness and strength to maintain the shape and stability of the barrel 21. The top of the barrel 21 is a barrel flange 22, and a threaded hole is provided on the barrel flange 22 for installing the top cover 10. The positioning rib 23 is arranged at the lower end of the inner wall of the barrel 21 and is welded and fixed to the side wall of the barrel 21. The positioning rib 23 plays a role in fixing the waste barrel to prevent the waste barrel from shaking during transportation. At the same time, the top of the positioning rib 23 is set as an inclined surface to facilitate the loading of the radioactive waste barrel. A plurality of corners 24 are fixed to the outside of the barrel flange 22, and the upper end thereof is higher than the barrel flange 22, which can effectively prevent the shielding layer of the barrel 21 from deformation when falling. A plurality of lifting ears 25 are fixed to the outer wall of the cylinder 21 to realize the overall transfer of the transport container. Meanwhile, the position of the lifting ears 25 corresponds to the interval between two adjacent wrap angles 24 , so that the steel rope for lifting the lifting ears will not be affected by the wrap angles 24 .

[0042] Optionally, the top edge of the cylinder flange 22 is provided with an inclined step adapted to the cover body 11 .

[0043] Optionally, the positioning rib plate 23 is an annular plate or a plurality of arc-shaped plates.

[0044] Optionally, a plurality of corner wraps 24 may be fixed at equal intervals on the outside of the cylinder flange 22, and the corner wraps 24 are arc-shaped square tubes.

[0045] Optionally, the lifting lug 21 may be located at the upper end of the outer wall of the cylinder 21, that is, below the cylinder flange 22, so that the stability is higher during lifting.

[0046] Specifically, as shown in FIG. 2 , the base 3 includes a base plate 31 and a plurality of forklift slots 32 . The base plate 31 and the bottom of the cylinder 21 are welded and connected. The plurality of forklift slots 32 are fixed below the base plate 31 for the overall transfer of the transport container.

[0047] Optionally, the base plate 31 is a rectangular plate to facilitate the installation of forklift slots 32 . There are four forklift slots 32 , which are respectively fixed under the four corners of the base plate 31 .

[0048] The loading process of the above-mentioned radioactive waste barrel transport container is as follows: first, transfer the transport container to the designated location through the lifting ears on the outside of the barrel or the forklift slot at the bottom; remove the lead seals of the bolts adjacent to the top cover and remove the bolts of the top cover; use a special lifting device to remove the top cover through the lifting parts; use a special lifting device to lift the radioactive waste barrel into the barrel; use a special lifting device to cover the top cover through the lifting parts; install the top cover connecting bolts. The unloading method is similar to the loading method.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0051] It should be noted that, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

Claims

1. A transport container for radioactive waste barrels, characterized in that: The invention comprises a barrel (20) and a top cover (10) above the barrel (20); the barrel (20) comprises a barrel (21), a barrel flange (22), a positioning rib (23) and a wrap angle (24); the barrel flange (22) is fixed to the top of the barrel (21); the positioning rib (23) is fixed to the inner wall of the barrel (21); the positioning rib (24) is fixed to the outer side of the barrel flange (22); the top cover (10) and the barrel (20) are connected via the barrel flange (22).

2. The transport container for radioactive waste barrels according to claim 1, characterized in that: The barrel (20) comprises a plurality of wrap angles (24).

3. The transport container for radioactive waste barrels according to claim 2, characterized in that: The plurality of wrap angles (24) are fixed at equal intervals on the outer side of the cylinder flange (22).

4. The transport container for radioactive waste barrels according to claim 3, characterized in that: The wrap angle (24) is an arc-shaped square tube.

5. The transport container for radioactive waste barrels according to claim 1, characterized in that: The positioning rib plate (23) is fixed to the lower end of the inner wall of the cylinder (21).

6. The transport container for radioactive waste barrels according to claim 5, characterized in that: The positioning rib plate (23) is an annular plate or a plurality of arc-shaped plates, and the top end of the positioning rib plate (23) is an inclined surface.

7. The transport container for radioactive waste barrels according to claim 1, characterized in that: The top cover (10) comprises a cover body (11) and a lifting component above the cover body (11); the edge of the lower surface of the cover body (11) is a sloped step structure.

8. The transport container for radioactive waste barrels according to claim 7, characterized in that: The cover body (11) is provided with a plurality of slot holes, the slot holes are used to connect the cover body (11) with the cylinder flange (22), and the slot holes are arc-shaped long slot holes.

9. The transport container for radioactive waste barrels according to claim 7, characterized in that: The lifting component comprises a ring plate (12) and a top plate (13), wherein the top plate (13) is fixed to the upper surface of the cover body (11), and the ring plate (12) is sleeved and fixed to the outer side of the top plate (13); A slot is provided at the lower end of the inner side wall of the ring plate (12), and an annular edge is provided at the upper end of the inner side wall of the ring plate (12); A plurality of semicircular through holes are arranged at the lower end of the side wall of the ring plate (12) close to the upper surface of the top plate (13).

10. The transport container for radioactive waste barrels according to claim 7, characterized in that: The upper surface edge of the cylinder flange (22) is a sloped step structure.

11. The transport container for radioactive waste barrels according to claim 1, characterized in that: The invention also comprises a base (30), wherein the base (30) comprises a base plate (31) and a plurality of forklift slots (32), wherein the forklift slots (32) are fixed below the base plate (31).

12. The transport container for radioactive waste barrels according to claim 2, characterized in that: The barrel (20) further comprises a plurality of lifting ears (25), wherein the lifting ears (25) are fixed to the outer side wall of the barrel (21) and are located between two adjacent wrap angles (24).

13. The transport container for radioactive waste barrels according to claim 12, characterized in that: The lifting lug (25) is a plate-type lifting lug.

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