Steel box for radioactive waste disposal

Abstract

The utility model discloses a steel box for radioactive waste disposal, which comprises a box body, the top end of the box body is hinged with a sealing cover, the bottom end of the inner cavity of the box body is provided with a placing seat, the top end of the placing seat is provided with four slideways along the circumferential direction, the inner cavities of the slideways are embedded with movable seats in a sliding manner, and the movable seats are arranged on the bottom end of the box body. Vertical plates are mounted at the top end of the moving seat, four pushing mechanisms are assembled in the inner cavity of the box body in the circumferential direction, and the four vertical plates can be pushed inwards when the placing seat descends; and the pushing mechanism comprises a mounting block, the mounting block is fixedly mounted on the inner wall of the box body, and a second rotating rod is rotationally mounted on the outer wall of the mounting block. According to the steel box for radioactive waste disposal, in actual use, radiation waste placed in the steel box can be intensively positioned and tightened, automatic tightening can be achieved in the placing process, operation by workers is not needed, fine adjustment can be conducted according to the actual size of a radiation waste package, the universality of equipment is improved, and operation is easy and convenient.

Description

Technical Field

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

[0002] Radioactive waste is a substance that contains or is contaminated by radionuclides, whose concentration or specific activity is greater than the clean clearance level specified by the national regulatory authorities and is 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 packaged and stored in containers of specific materials, such as lead barrels, waste steel boxes, etc. The radioactive waste steel boxes currently used are supported by lead plates attached to a metal shell. The lead plates can isolate radiation, but the existing steel boxes do not have the ability to locate radioactive waste. When the size of the radioactive waste placed therein is different from the size of the inner liner, the radioactive waste is prone to shaking during transportation. If the shaking is severe and the packaged radioactive waste is scattered, it is easy to contaminate the container steel box and make it unusable. If the lead plate of the steel box is damaged, radiation leakage is easy. Based on the above problems, a steel box for radioactive waste disposal is proposed. Utility Model Content

[0003] The utility model aims to provide a steel box for radioactive waste disposal, so as to solve the problem that the existing steel box mentioned in the background technology does not have the positioning ability of radioactive waste and the material packages of inappropriate size will shake after being placed in it.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel box for radioactive waste disposal, comprising: a box body, a sealing cover hinged on the top of the box body, a placement seat equipped at the bottom end of the inner cavity of the box body, four slides opened along the circumferential direction at the top of the placement seat, a moving seat slidably embedded in the inner cavity of the slide, a vertical plate installed on the top of the moving seat, and four pushing mechanisms equipped along the circumferential direction of the inner cavity of the box body, which can push the four vertical plates inward when the placement seat descends.

[0005] The pushing mechanism includes: a mounting block, which is fixedly mounted on the inner wall of the box body, a second rotating rod is rotatably mounted on the outer wall of the mounting block, and two free ends of the second rotating rod are respectively inclined toward the direction of the placement seat, one end of the first rotating rod is rotatably mounted on the bottom end of the second rotating rod, and the other end of the first rotating rod is rotatably mounted on the bottom end of the placement seat, and the top end of the second rotating rod corresponds to the position of the vertical plate.

[0006] Preferably, a sliding groove is provided on the outer wall of the vertical plate, a sliding ball is installed on the top end of the second rotating rod, and the sliding ball is slidably embedded in the inner cavity of the sliding groove.

[0007] Preferably, one end of a spring is installed at the bottom end of the placement seat, and the other end of the spring is installed at the bottom end of the inner cavity of the box body.

[0008] Preferably, a clamping arm is movably mounted on the top of the movable seat, and the clamping arm is located on the inner side of the vertical plate.

[0009] Preferably, a blind groove is provided at the top of the movable seat, one end of a lead screw is rotatably mounted on the inner wall of the blind groove, and the other end of the lead screw passes through the outer wall of the movable seat, a knob is installed on one end of the lead screw passing through the outer wall of the movable seat, a movable block is screwed on the lead screw, and the top of the movable block is fixedly connected to the bottom end of the clamping arm.

[0010] Preferably, the shape of the moving block is adapted to the shape of the inner cavity of the blind groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the steel box for radioactive waste disposal places the packaged radioactive waste on the top of the placement seat to make it descend under the action of gravity, and then the first rotating rod and the second rotating rod rotate. At this time, the top of the second rotating rod pushes the vertical plate inward, and each vertical plate clamps the radioactive waste package in the center. When adjustment is needed, the moving block drives the clamping arm to move inward and outward by rotating the lead screw. In actual use, the radioactive waste placed therein can be centrally positioned and tightened, and it can be automatically tightened during the placement process without the need for staff to operate. It can also be fine-tuned according to the actual size of the radioactive waste package, thereby improving the versatility of the equipment and facilitating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the placement seat of the utility model.

[0014] Figure 3 This is the front view of the first rotating rod of the utility model

[0015] Figure 4 It is a front cross-sectional view of the mobile seat of the utility model.

[0016] In the figure: 1, box body, 2, sealing cover, 3, placement seat, 4, slide, 5, moving seat, 6, vertical plate, 7, clamping arm, 8, limiting groove, 9, screw, 10, knob, 11, moving block, 12, first rotating rod, 13, second rotating rod, 14, mounting block, 15, sliding ball, 16, sliding groove, 17, spring. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-4 The utility model provides a technical solution of a steel box for radioactive waste disposal: a steel box for radioactive waste disposal, comprising: a box body 1, a sealing cover 2 is hinged on the top of the box body 1, the box body 1 and the sealing cover 2 are both made of stainless steel shells, lined with lead plates, and have a good radiation isolation effect, a placement seat 3 is assembled at the bottom of the inner cavity of the box body 1, four slideways 4 are opened along the circumferential direction at the top of the placement seat 3, a moving seat 5 is slidably embedded in the inner cavity of the slideway 4, a vertical plate 6 is installed on the top of the moving seat 5, a clamping arm 7 is movably installed on the top of the moving seat 5, and the clamping arm 7 is located on the inner side of the vertical plate 6, wherein the outer wall of the clamping arm 7 is made of rubber material, which can avoid damaging the packaged radioactive waste.

[0019] In addition, a blind groove is provided at the top of the movable seat 5, and one end of a lead screw 9 is rotatably installed on the inner wall of the blind groove, and the other end of the lead screw 9 passes through the outer wall of the movable seat 5, and a knob 10 is installed on one end of the lead screw 9 passing through the outer wall of the movable seat 5, and a movable block 11 is screwed on the lead screw 9, and the top of the movable block 11 is fixedly connected to the bottom end of the clamping arm 7. Turning the knob 10 can rotate the lead screw 9, and then the movable block 11 drives the clamping arm 7 to move, wherein the shape of the movable block 11 is adapted to the shape of the inner cavity of the blind groove, which can prevent the movable block 11 from rotating.

[0020] The inner cavity of the box body 1 is equipped with four pushing mechanisms along the circumference, which can push the four vertical plates 6 inward when the placement seat 3 descends, wherein one end of the spring 17 is installed at the bottom end of the placement seat 3, and the other end of the spring 17 is installed at the bottom end of the inner cavity of the box body 1. When the placement seat 3 descends, the spring 17 can be compressed. When the external force disappears, the placement seat 3 can be raised and reset by utilizing the elastic force of the spring 17 itself.

[0021] The pushing mechanism includes: a mounting block 14, which is fixedly mounted on the inner wall of the box body 1, and a second rotating rod 13 is rotatably mounted on the outer wall of the mounting block 14, and the two free ends of the second rotating rod 13 are respectively inclined in the direction of the placement seat 3, and one end of the first rotating rod 12 is rotatably mounted on the bottom end of the second rotating rod 13, and the other end of the first rotating rod 12 is rotatably mounted on the bottom end of the placement seat 3, and the top end of the second rotating rod 13 corresponds to the position of the vertical plate 6. When the placement seat 3 moves downward, the first rotating rod 12 and the second rotating rod 13 can be driven to rotate, so that the top end of the second rotating rod 13 pushes the vertical plate 6 to move inward, and a sliding groove 16 is opened on the outer wall of the vertical plate 6. A sliding ball 15 is installed on the top end of the second rotating rod 13, and the sliding ball 15 can rotate up and down, and the sliding ball 15 is slidably embedded in the inner cavity of the sliding groove 16, so as to facilitate displacement compensation during the descent of the placement seat 3.

[0022] 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.

[0023] When in use, open the sealing cover 2 and place the pre-packaged radioactive waste on the top of the placement seat 3. Under the pressure of the heavy object, the placement seat 3 moves downward and compresses the spring 17. At this time, the first rotating rod 12 and the second rotating rod 13 rotate accordingly, and the top of the second rotating rod 13 moves inward. At the same time, the sliding ball 15 slides in the inner cavity of the sliding groove 16 for displacement compensation, pushing the vertical plate 6 inward. Several vertical plates 6 move inward synchronously to clamp the radioactive waste on the top of the placement seat 3. When fine-tuning is required, the knob 10 is rotated in advance to rotate the screw 9. At this time, the moving block 11 will drive the clamping arm 7 to move, thereby performing fine-tuning. In actual use, it can not only automatically tighten during the placement process, which is convenient for automatically realizing the centering limit of the radioactive waste to avoid shaking, but also can perform adaptive fine-tuning according to needs to improve the overall versatility of the equipment.

[0024] 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.

[0025] 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 box for radioactive waste disposal, characterized in that: include: A box body (1), wherein a sealing cover (2) is hingedly connected to the top of the box body (1), a placement seat (3) is installed at the bottom of the inner cavity of the box body (1), four slideways (4) are opened along the circumferential direction at the top of the placement seat (3), a movable seat (5) is slidably embedded in the inner cavity of the slideway (4), a vertical plate (6) is installed at the top of the movable seat (5), and four pushing mechanisms are installed along the circumferential direction of the inner cavity of the box body (1), which can push the four vertical plates (6) inward when the placement seat (3) descends; The pushing mechanism comprises: a mounting block (14), the mounting block (14) being fixedly mounted on the inner wall of the box body (1), a second rotating rod (13) being rotatably mounted on the outer wall of the mounting block (14), and two free ends of the second rotating rod (13) being respectively inclined in the direction of the placement seat (3), one end of the first rotating rod (12) being rotatably mounted on the bottom end of the second rotating rod (13), and the other end of the first rotating rod (12) being rotatably mounted on the bottom end of the placement seat (3), and the top end of the second rotating rod (13) corresponding to the position of the vertical plate (6).

2. A steel box for radioactive waste disposal according to claim 1, characterized in that: The outer wall of the vertical plate (6) is provided with a sliding groove (16), the top end of the second rotating rod (13) is provided with a sliding ball (15), and the sliding ball (15) is slidably embedded in the inner cavity of the sliding groove (16).

3. A steel box for radioactive waste disposal according to claim 2, characterized in that: One end of a spring (17) is installed at the bottom end of the placement seat (3), and the other end of the spring (17) is installed at the bottom end of the inner cavity of the box body (1).

4. A steel box for radioactive waste disposal according to any one of claims 1 to 3, characterized in that: A clamping arm (7) is movably mounted on the top of the movable seat (5), and the clamping arm (7) is located on the inner side of the vertical plate (6).

5. A steel box for radioactive waste disposal according to claim 4, characterized in that: A blind groove is provided at the top of the movable seat (5), one end of a lead screw (9) is rotatably mounted on the inner wall of the blind groove, and the other end of the lead screw (9) passes through the outer wall of the movable seat (5), a knob (10) is mounted on the end of the lead screw (9) passing through the outer wall of the movable seat (5), a movable block (11) is screwed to the lead screw (9), and the top end of the movable block (11) is fixedly connected to the bottom end of the clamping arm (7).

6. A steel box for radioactive waste disposal according to claim 5, characterized in that: The shape of the moving block (11) is adapted to the shape of the inner cavity of the blind groove.

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