Steel drum for radioactive waste disposal

Abstract

The utility model discloses a steel drum for radioactive waste disposal, which comprises a lead plate outer barrel, a lead plate barrel cover capable of being fixedly connected with the lead plate outer barrel is assembled at the top end of the lead plate outer barrel, a metal inner container is placed in an inner cavity of the lead plate outer barrel, the metal inner container is a cylindrical barrel body with an opening in the top, and the metal inner container is made of stainless steel. An interlayer is reserved between the circumference of the outer wall of the metal inner container and an inner cavity of the lead plate outer cylinder, and an elastic buffering part is arranged in an inner cavity of the interlayer. The elastic buffering part comprises a plurality of mounting grooves, and the mounting grooves are formed in the circumference of the outer wall of the metal inner container at equal intervals. According to the steel drum for radioactive waste disposal, in actual use, sealed storage of radioactive waste can be achieved, meanwhile, good protection performance can be provided, and radiation leakage caused by equipment breakage can be effectively buffered when the steel drum is impacted by external force or subjected to large torsion in the transfer process.

Description

Technical Field

[0001] The utility model relates to the technical field of radioactive waste storage equipment, in particular to a steel barrel used for radioactive waste disposal. Background Art

[0002] Radioactive waste refers to materials that contain or are contaminated with radionuclides, whose concentration or specific activity is greater than the clean clearance level specified by the national regulatory authorities and are not expected to be used again. It can be divided into gaseous waste, liquid waste and solid waste according to its form. Before radioactive waste is effectively treated, it needs to be stored in containers of specific materials, such as lead barrels. The lead barrels currently used are usually composed of an inner cylinder and an outer cylinder, wherein the inner cylinder is usually made of stainless steel, and the outer cylinder is made of lead plates of rated thickness. The outer wall may be wrapped with a layer of stainless steel to prevent damage to the lead plates, and the sealing can effectively block the leakage of nuclear radiation. However, the storage cylinders currently used do not have impact resistance. If they are impacted during transportation, the outer cylinder and the inner cylinder are directly subjected to the force and cannot be effectively buffered, and are prone to rupture, thereby causing additional radiation leakage. Based on the above problems, a steel barrel for radioactive waste disposal is proposed. Utility Model Content

[0003] The utility model aims to provide a steel barrel for radioactive waste disposal, so as to solve the problem in the above background technology that the storage barrel currently used has no impact resistance and is prone to rupture due to lack of effective buffering when impacted.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a steel drum for radioactive waste disposal, comprising: a lead outer cylinder, the top end of which is equipped with a lead barrel cover that can be fixedly connected to it, a metal liner placed in the inner cavity of the lead outer cylinder, wherein the metal liner is a cylindrical cylinder with an open top, an interlayer is left between the outer wall circumference of the metal liner and the inner cavity of the lead outer cylinder, and an elastic buffer portion is arranged in the inner cavity of the interlayer.

[0005] The elastic buffer part includes: a mounting groove, wherein the mounting grooves are multiple and are equidistantly arranged on the circumference of the outer wall of the metal inner liner, and an airbag is fixedly installed in the inner cavity of the mounting groove, wherein the airbag is a sac-like structure made of an airtight flexible material, and after the inner cavity of the airbag is filled with gas, its outer wall can contact with the inner wall of the lead plate outer cylinder, and can undergo elastic deformation to resist external force impact after being impacted.

[0006] Preferably, a torsion buffer portion is provided at the bottom end of the metal liner.

[0007] Preferably, the torsion buffer portion includes: a slide groove, wherein the number of the slide grooves is several and they are equidistantly opened at the bottom end of the inner cavity of the lead plate outer cylinder, and a plurality of sliders are equidistantly installed at the bottom end of the metal inner liner, and the plurality of sliders are slidably embedded in the inner cavities of the plurality of slide grooves, and an elastic element is installed between the outer wall of the slider and the inner wall of the slide groove.

[0008] Preferably, the elastic element is a spring.

[0009] Preferably, when the spring is in a natural state, the slider is located in the middle of the inner cavity of the slide groove.

[0010] Preferably, the top circumference of the inner wall of the lead plate outer cylinder is provided with an internal thread, and the bottom circumference of the outer wall of the lead plate barrel cover is provided with an external thread, and the external thread can be threadedly connected with the internal thread.

[0011] Preferably, a clamping groove is provided on the circumference of the top end of the outer wall of the lead plate outer cylinder, and a clamping strip is provided on the circumference of the bottom end of the outer wall of the lead plate barrel cover, and the clamping strip is embedded in the inner cavity of the clamping groove.

[0012] Preferably, a through hole is formed on the outer wall of the lead plate barrel cover, and a lead plate sealing block is screwed into the inner cavity of the through hole.

[0013] Preferably, a handle is installed on the top of the lead plate barrel cover.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the steel barrel used for radioactive waste disposal realizes the sealing of the inner cavity of the lead outer cylinder by rotating the lead barrel cover so that the external thread and the internal thread are screwed together, and the gas bag filled with gas can fit with the inner wall of the lead outer cylinder, so that the lead barrel cover can be stably placed in the inner cavity of the lead outer cylinder, and when impacted by external force, the air bag is deformed and the others are compressed, and the expansion force obtained by gas compression is used to buffer the external force to prevent the metal liner from being subjected to a large impact force, and when torsion occurs, the elastic force or tensile force obtained by spring deformation is used to buffer the torsion. In actual use, the radioactive waste can be sealed and preserved, and good protection performance can be provided at the same time. When impacted by external force or large torsion occurs during transportation, it can be effectively buffered to prevent radiation leakage caused by equipment rupture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] Figure 2 It is a bottom view of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the main view of the utility model.

[0018] Figure 4It is a schematic diagram of the structure of the metal liner of the utility model.

[0019] Figure 5 It is a top view of the slideway of the utility model.

[0020] In the figure: 1. lead plate outer cylinder, 2. lead plate barrel cover, 3. metal liner, 4. interlayer, 5. mounting groove, 6. air bag, 7. slider, 8. slide groove, 9. spring, 10. internal thread, 11. external thread, 12. slot, 13. clamping strip, 14. through hole, 15. lead plate sealing block, 16. handle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides a technical solution for a steel drum for radioactive waste disposal: a steel drum for radioactive waste disposal, comprising: a lead plate outer cylinder 1, a lead plate barrel cover 2 which can be fixedly connected to the lead plate barrel cover 2 is mounted on the top of the lead plate outer cylinder 1, a handle 16 is mounted on the top of the lead plate barrel cover 2, so that the user can pull the lead plate barrel cover 2 to lift or place it, an internal thread 10 is arranged on the circumference of the top of the inner wall of the lead plate outer cylinder 1, an external thread 11 is arranged on the circumference of the bottom of the outer wall of the lead plate barrel cover 2, the external thread 11 can be screwed with the internal thread 10, and the fixed connection between the lead plate outer cylinder 1 and the lead plate barrel cover 2 can be achieved after the external thread 11 and the internal thread 10 are screwed together, wherein a through hole 14 is opened on the outer wall of the lead plate barrel cover 2, a lead plate sealing block 15 is screwed in the inner cavity of the through hole 14, and the through hole 14 can be opened or sealed by rotating the lead plate sealing block 15, and the through hole 14 can be used as a temporary access opening or observation opening, so that the user can perform temporary operation conveniently.

[0023] A metal liner 3 is placed in the inner cavity of the lead plate outer cylinder 1, wherein the metal liner 3 is a cylindrical cylinder with an opening at the top, and an interlayer 4 is left between the outer wall circumference of the metal liner 3 and the inner cavity of the lead plate outer cylinder 1. An elastic buffer part is arranged in the inner cavity of the interlayer 4. When the lead plate outer cylinder 1 is impacted by external force, the metal liner 3 will shake. The elastic buffer part can effectively buffer the external force to prevent the metal liner 3 from breaking due to excessive force.

[0024] Among them, the elastic buffer part includes: mounting grooves 5, the number of mounting grooves 5 is several, and they are equidistantly arranged on the outer wall circumference of the metal inner liner 3. The inner cavity of the mounting groove 5 is fixedly installed with an airbag 6, wherein the airbag 6 is a sac-like structure made of airtight flexible materials such as nylon polyamide, polyester and polypropylene. After the inner cavity of the airbag 6 is filled with gas, its outer wall can swell, so that it contacts the inner wall of the lead plate outer tube 1. When impacted, the swollen airbag 6 can undergo elastic deformation, so that the gas is compressed, and the expansion force of the gas drives the airbag 6 to swell to the initial state, and then it can resist external force impact.

[0025] As a preferred embodiment, further, a torsion buffer portion is provided at the bottom end of the metal inner liner 3; the torsion buffer portion includes: a slide groove 8, wherein the number of the slide grooves 8 is several and they are equidistantly arranged at the bottom end of the inner cavity of the lead plate outer cylinder 1, and a plurality of sliders 7 are equidistantly installed at the bottom end of the metal inner liner 3, and the plurality of sliders 7 are slidably embedded in the inner cavities of the plurality of slide grooves 8, and a spring 9 is installed between the outer wall of the slider 7 and the inner wall of the slide groove 8, and the spring 9 is a coil spring, which produces elastic deformation when stretched or squeezed, and returns to its initial state after the external force is removed, and when the metal inner liner 3 is twisted by an external force, the slider 7 rotates in the inner cavity of the slide groove 8, thereby stretching or squeezing the spring 9, and the slider 7 is driven to reset by the tension or elastic force generated by the elastic deformation of the spring 9, thereby counteracting the external force causing the torsion, wherein, when the spring 9 is in a natural state, the slider 7 is located in the middle of the inner cavity of the slide groove 8, to ensure that the slider 7 has enough space for forward or reverse rotation.

[0026] The spring 9 can be replaced by elastic elements such as elastic plastics, elastic steel strips, etc.

[0027] As a preferred solution, further, a card slot 12 is opened on the circumference of the top end of the outer wall of the lead plate outer cylinder 1, and a card strip 13 is arranged on the circumference of the bottom end of the outer wall of the lead plate barrel cover 2, and the card strip 13 is embedded in the inner cavity of the card slot 12, and the cooperation of the two is utilized to improve the sealing degree.

[0028] The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0029] When in use, the radioactive waste is packed and placed in the inner cavity of the metal liner 3, and the airbag 6 is filled with gas so that its outer wall fits with the inner wall of the lead outer cylinder 1. Then the lead barrel cover 2 is placed on the top of the lead outer cylinder 1 and rotated so that the internal thread 10 and the external thread 11 are screwed together, thereby achieving the sealing of the lead outer cylinder 1 and the lead barrel cover 2. At this time, the clamping strip 13 is embedded in the inner cavity of the clamping groove 12 to further ensure the sealing effect. At this time, the radioactive waste is effectively sealed and preserved. If it is necessary to temporarily take or observe the waste, the lead sealing block 15 can be rotated to move it out of the inner cavity of the through hole 14, otherwise it can be sealed;

[0030] When the lead plate outer cylinder 1 is impacted, the metal liner 3 will slide under the action of external force, and the airbag 6 will be squeezed and deformed, and the gas therein will be compressed, and the expansion force will be obtained to drive the airbag 6 to recover, and the force will be used to resist the force caused by the external impact, so as to buffer. When torsion occurs, the metal liner 3 will rotate relative to the lead plate outer cylinder 1, and the slider 7 will slide in the inner cavity of the slide groove 8 following the rotation of the metal liner 3, and at the same time compress or stretch the spring 9, and then use the elastic force or tension generated by the deformation of the spring 9 to buffer;

[0031] In actual use, it can not only effectively seal radioactive waste, but also ensure stability during transportation. When impacted by external forces, it can effectively buffer and prevent the container carrying radioactive waste from rupturing, thereby preventing accidental leakage of radiation.

[0032] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "center position", "other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly specified and limited, the terms "snapping", "plugging", "welding", "installation", "setting", "interference fit", "screw connection", "pin connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel drum for radioactive waste disposal, characterized in that: include: A lead plate outer cylinder (1), the top end of the lead plate outer cylinder (1) being equipped with a lead plate barrel cover (2) that can be fixedly connected thereto, a metal inner liner (3) being placed in the inner cavity of the lead plate outer cylinder (1), wherein the metal inner liner (3) is a cylindrical body with an open top, an interlayer (4) is left between the outer wall circumference of the metal inner liner (3) and the inner cavity of the lead plate outer cylinder (1), and an elastic buffer portion is provided in the inner cavity of the interlayer (4); The elastic buffer portion comprises: a plurality of mounting grooves (5), each of which is equidistantly arranged on the circumference of the outer wall of the metal inner liner (3); an airbag (6) is fixedly installed in the inner cavity of the mounting groove (5); the airbag (6) is a bag-like structure made of an airtight flexible material; after the inner cavity of the airbag (6) is filled with gas, its outer wall can contact the inner wall of the lead plate outer cylinder (1), and can undergo elastic deformation to resist external force impact after being impacted.

2. A steel drum for radioactive waste disposal according to claim 1, characterized in that: A torsion buffer portion is provided at the bottom end of the metal liner (3).

3. A steel drum for radioactive waste disposal according to claim 2, characterized in that: The torsion buffer portion comprises: a slide groove (8), wherein the number of the slide grooves (8) is equidistantly arranged at the bottom end of the inner cavity of the lead plate outer cylinder (1), a plurality of sliders (7) are equidistantly installed at the bottom end of the metal inner liner (3), and the plurality of sliders (7) are slidably embedded in the inner cavities of the plurality of slide grooves (8), and an elastic element is installed between the outer wall of the slider (7) and the inner wall of the slide groove (8).

4. A steel drum for radioactive waste disposal according to claim 3, characterized in that: The elastic element is a spring (9).

5. A steel drum for radioactive waste disposal according to claim 4, characterized in that: When the spring (9) is in a natural state, the slider (7) is located in the middle of the inner cavity of the slide groove (8).

6. A steel drum for radioactive waste disposal according to any one of claims 1 to 5, characterized in that: The top circumference of the inner wall of the lead plate outer cylinder (1) is provided with an internal thread (10), and the bottom circumference of the outer wall of the lead plate barrel cover (2) is provided with an external thread (11), and the external thread (11) can be threadedly connected with the internal thread (10).

7. A steel drum for radioactive waste disposal according to any one of claims 1 to 5, characterized in that: A clamping groove (12) is provided on the circumference of the top end of the outer wall of the lead plate outer cylinder (1), and a clamping strip (13) is provided on the circumference of the bottom end of the outer wall of the lead plate barrel cover (2), and the clamping strip (13) is embedded in the inner cavity of the clamping groove (12).

8. A steel drum for radioactive waste disposal according to any one of claims 1 to 5, characterized in that: The outer wall of the lead plate barrel cover (2) is provided with a through hole (14), and the inner cavity of the through hole (14) is screwed with a lead plate sealing block (15).

9. A steel drum for radioactive waste disposal according to any one of claims 1 to 5, characterized in that: A handle (16) is installed on the top end of the lead plate barrel cover (2).

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