Radiation-proof shielding cover for dismounting built-in radioactive source

Abstract

An anti-radiation shielding cover used for dismounting a built-in radioactive source relates to an anti-radiation shielding cover which is characterized in that a half clamp body A and a half clamp body B are oppositely arranged, a rotating ring A (7) and a rotating ring B (17) are rotationally connected to a rotating shaft (8) respectively to enable the half clamp body A and the half clamp body B to form an X-shaped structure, and a jaw formed by a clamp head A (2) and a clamp head B (4) is located above a through seam (1) in the center of the top of a cover body (3); an elastic locking structure is arranged between the end part of the handle A (9) and the end part of the handle B (10); the through seam penetrating through the top is formed in one side of the cover body, the tong head is arranged above the through seam located in the center of the top of the cover body, the cover body is connected to the outer portion of the reinforcing steel bar in a sleeved mode through the through seam, the cover body covers the opening portion of the source pipe, the reinforcing steel bar is clamped through the tong head, a radioactive source is effectively covered when a steel cable is disassembled, and the radioactive source can be effectively prevented from being damaged. And an operator is prevented from being hurt by radiation.

Description

Technical Field

[0001] The utility model relates to an anti-radiation shielding cover, in particular to an anti-radiation shielding cover used for disassembling a built-in radioactive source. Background Art

[0002] When measuring the internal density of the reactor of the ebullated bed residue oil hydrocracking unit, it is necessary to place the radioactive source from the bottom opening of the lead tank set above the ebullated bed residue oil hydrocracking unit by placing a rope to hang the steel cable with multiple radioactive sources into the ebullated bed residue oil hydrocracking unit. A steel cable with a total length of 23 meters is hung with 11 radioactive sources. The steel cable is divided into 10 sections and has a total of 9 threaded joints. The steel cable is suspended in a stainless steel source tube with a diameter of DN50 in the ebullated bed residue oil hydrocracking unit. The radioactive source needs to be frequently collected and released according to actual use needs. When collecting the radioactive source, the steel cable needs to be disassembled and extracted from the ebullated bed residue oil hydrocracking unit section by section, and then the radioactive source is collected into 4 source tanks. Because the operator is close to the radioactive source when disassembling the steel cable, his hands are easily damaged by radiation, and there is no anti-falling measure during the disassembly of the steel cable, which can easily cause the radioactive source to fall into the ebullated bed residue oil hydrocracking unit. Utility Model Content

[0003] In order to overcome the deficiencies in the background technology, the utility model discloses a radiation shielding cover for disassembling a built-in radioactive source, by providing a through seam running through the top on one side of the cover body, and providing a clamp head above the through seam located at the center of the top of the cover body, the cover body is sleeved on the outside of the steel bar through the through seam, and the cover body is covered on the source pipe mouth, and the steel bar is clamped by the clamp head, thereby achieving the purpose of effectively covering the radioactive source when dismantling the steel cable to prevent the operator from being harmed by radiation.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A radiation shielding cover for disassembling a built-in radioactive source comprises a cover body, a half clamp body A and a half clamp body B. A through-slit penetrating the bottom of a side wall of one side of the cover body is provided at the center of the top of the cover body, and a rotating shaft is provided on the other side of the top of the cover body opposite to the through-slit. The half clamp body A comprises a rotating ring A, a clamp head A is provided on one side of the rotating ring A, and a handle A is provided on the other side of the rotating ring A. The half clamp body B comprises a rotating ring B, a clamp head B is provided on one side of the rotating ring B, and a handle B is provided on the other side of the rotating ring B. The half clamp body A comprises a rotating ring A, a clamp head B is provided on one side of the rotating ring B, and a handle B is provided on the other side of the rotating ring B. It is arranged opposite to the half-plier body B, and the swivel A and the swivel B are respectively rotatably connected on the rotating shaft to make the half-plier body A and the half-plier body B form an X-shaped structure. The jaws formed by the pliers head A and the pliers head B are located above the through seam at the center of the top of the cover body. An arc-shaped through groove A is provided on the pliers head A on the opposite sides of the pliers head A and the pliers head B located above the center of the top of the cover body, and an arc-shaped through groove B is provided on the pliers head B at a position opposite to the arc-shaped through groove A. An elastic locking structure is provided between the end of the handle A and the end of the handle B.

[0006] The radiation shielding cover used for disassembling the built-in radioactive source has an elastic locking structure including a notch and a spring, one end of the spring is hingedly connected to the end of the handle B, and the notch is arranged at the end of the outer wall of the handle A. After the clamp heads A and B clamp the steel bar, the other end of the spring can be stuck in the notch so that the arcuate through groove A and the arcuate through groove B can elastically and tightly clamp the steel bar.

[0007] The radiation shielding cover used for disassembling the built-in radioactive source is provided with a through hole at the end of the handle B, a hook is provided at one end of the spring, the hook and the through hole are hingedly connected, and a ring body is provided at the other end of the spring. After the clamp heads A and B clamp the steel bar, the ring body can be stuck in the notch so that the arc-shaped through groove A and the arc-shaped through groove B elastically and tightly clamp the steel bar.

[0008] The radiation shielding cover used for disassembling the built-in radioactive source has handles A and B covered with handle covers.

[0009] The radiation shielding cover used for disassembling the built-in radioactive source, handle A and handle B are respectively arc-shaped structures.

[0010] The radiation shielding cover used for disassembling the built-in radioactive source is provided with anti-slip grooves in both the arc-shaped through groove A and the arc-shaped through groove B.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0012] The radiation shielding cover for disassembling a built-in radioactive source disclosed in the present invention has a through seam penetrating the top on one side of the cover body, and a clamp head is provided above the through seam located at the center of the top of the cover body, the cover body is sleeved on the outside of the steel bar through the through seam, and the cover body is covered on the source pipe mouth, and the steel bar is clamped by the clamp head, so that the radiation source is effectively covered when the steel cable is disassembled, and the operator is prevented from being harmed by radiation. The utility model has the characteristics of simple structure, easy operation, high safety, practicality and compactness, and solves the problem that personnel cannot perform the disassembly operation of the radioactive source steel cable at close range. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the half clamp body A of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the half clamp body B of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the cover body of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the spring of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the utility model when in use.

[0019] In the figure: 1, through seam; 2, pliers head A; 3, cover body; 4, pliers head B; 5, arc-shaped through slot A; 6, arc-shaped through slot B; 7, swivel A; 8, rotating shaft; 9, handle A; 10, handle B; 11, handle cover; 12, notch; 13, perforation; 14, hook; 15, spring; 16, ring body; 17, swivel B; 18, steel bar. DETAILED DESCRIPTION

[0020] The present invention can be explained in more detail through the following embodiments. The present invention is not limited to the following embodiments. The purpose of disclosing the present invention is to protect all changes and improvements within the scope of the present invention.

[0021] Combined with Figures 1 to 5The radiation shielding cover for disassembling the built-in radioactive source described in the invention comprises a cover body 3, a half clamp body A and a half clamp body B. A through slit 1 penetrating through the bottom of the side wall of one side of the cover body 3 is provided at the center position of the top of the cover body 3. A rotating shaft 8 is provided on the other side of the top of the cover body 3 opposite to the through slit 1. The half clamp body A comprises a rotating ring A7, a clamp head A2 is provided on one side of the rotating ring A7, and a handle A9 is provided on the other side of the rotating ring A7. The half clamp body B comprises a rotating ring B17, a clamp head B4 is provided on one side of the rotating ring B17, and a handle A9 is provided on the other side of the rotating ring A handle B10 is provided on the other side of B17, and the half pliers A and the half pliers B are arranged opposite to each other. The swivel A7 and the swivel B17 are respectively rotatably connected to the rotating shaft 8 so that the half pliers A and the half pliers B form an X-shaped structure. The jaws formed by the pliers heads A2 and the pliers heads B4 are located above the through-slit 1 at the center position of the top of the cover body 3. An arc-shaped through groove A5 is provided on the pliers head A2 on the opposite side of the pliers head A2 and the pliers head B4 located above the center position of the top of the cover body 3, and an arc-shaped through groove A5 is provided on the pliers head B4 at the opposite side of the arc-shaped through groove A5. The arc-shaped through groove B6 is provided with anti-slip grooves in the arc-shaped through groove A5 and the arc-shaped through groove B6. An elastic locking structure is provided between the end of the handle A9 and the end of the handle B10. The elastic locking structure includes a notch 12 and a spring 15. One end of the spring 15 is hingedly connected to the end of the handle B10. The notch 12 is provided at the end of the outer wall of the handle A9. After the clamp head A2 and the clamp head B4 clamp the steel bar 18, the other end of the spring 15 can be stuck in the notch 12 so that the arc-shaped through groove A5 and the arc-shaped through groove B6 are against the steel bar. 18 is elastically and tightly clamped, a through hole 13 is provided at the end of the handle B10, a hook 14 is provided at one end of the spring 15, the hook 14 and the through hole 13 are hingedly connected, and a ring body 16 is provided at the other end of the spring 15. After the pliers A2 and the pliers B4 clamp the steel bar 18, the ring body 16 can be stuck in the notch 12 so that the arc-shaped through groove A5 and the arc-shaped through groove B6 can elastically and tightly clamp the steel bar 18, and the handle A9 and the handle B10 are both covered with a handle cover 11, and the handle A9 and the handle B10 are respectively arc-shaped structures.

[0022] In the implementation of the radiation shielding cover for disassembling the built-in radioactive source described in the utility model, when in use, the upper end of the steel bar 18 is suspended by a pull rope, and multiple radioactive sources arranged on the multiple sections of interconnected steel bars 18 are located in the source tube. First, the first section of the steel bar 18 with the radioactive source suspended thereon is pulled out into the source tank arranged above the source tube, and the connecting buckle between the first section of the steel bar 18 and the second section of the steel bar 18 is placed in the external space between the lower part of the source tank and the upper part of the source tube, and the attached Figure 6The operator holds the handle A9 with one hand and the handle B10 with the other hand, so that the clamp heads A2 and B4 are in an open state, so that the steel bar 18 below the two sections of the steel bar 18 connecting buckle passes through the through seam 1 located at the center of the top of the cover body 3. The operator pulls the handle A9 and the handle B10 to restrict the steel bar 18 between the arc-shaped through groove A5 and the arc-shaped through groove B6 and the steel bar 18 is slightly fitted with the arc-shaped through groove A5 and the arc-shaped through groove B6. The operator pulls the handle A9 and the handle B10 to slide the cover body 3 downward on the steel bar 18 until the cover body 3 covers the source pipe mouth. The operator holds the handle A9 and the handle B10 with one hand and hinges one end to the handle with the other hand. The other end of the spring 15 at the end of the hand B10 is stretched and the ring body 16 provided on the spring 15 is used to clamp the notch 12 provided on the handle A9, so that the arcuate through groove A5 and the arcuate through groove B6 elastically and tightly clamp the steel bar 18. The operator unscrews the connecting buckle of the steel bar 18 located above the utility model, and stores the first section of the steel bar 18 into the source tank by the pull rope, and then separates the connecting buckle between the pull rope and the first section of the steel bar 18, ties the pull rope, and connects the pull rope and the second section of the steel bar 18 through the connecting buckle. The operator removes the utility model by reversely operating according to the above steps; repeat the above steps to remove multiple sections of steel bars 18 with radioactive sources connected to each other.

[0023] The parts not described in detail in this utility model are prior art.

Claims

1. A radiation shielding cover for disassembling a built-in radioactive source, characterized by: The invention comprises a cover body (3), a half clamp body A and a half clamp body B. A through slit (1) penetrating through the bottom of a side wall of one side of the cover body (3) is provided at the center position of the top of the cover body (3). A rotating shaft (8) is provided on the other side of the top of the cover body (3) opposite to the through slit (1). The half clamp body A comprises a rotating ring A (7). A clamp head A (2) is provided on one side of the rotating ring A (7). A handle A (9) is provided on the other side of the rotating ring A (7). The half clamp body B comprises a rotating ring B (17). A clamp head B (4) is provided on one side of the rotating ring B (17). A handle B (10) is provided on the other side of the rotating ring B (17). The half clamp body A and the half clamp body B are arranged relative to each other. The rotating ring A (7) and the rotating ring B (17) are respectively rotatably connected to the rotating shaft (8) so that the half clamp body A and the half clamp body B form an X-shaped structure. The jaws formed by the clamp head A (2) and the clamp head B (4) are located above the through slit (1) at the center position of the top of the cover body (3). The clamp head A (2) is provided with an arcuate through groove A (5) on the opposite side of the clamp head A (2) and the clamp head B (4) located above the center position of the top of the cover body (3). The clamp head B (4) is provided with an arcuate through groove B (6) at a position opposite to the arcuate through groove A (5). An elastic locking structure is provided between the end of the handle A (9) and the end of the handle B (10).

2. The radiation shielding cover for disassembling a built-in radioactive source according to claim 1 is characterized in that: The elastic locking structure comprises a notch (12) and a spring (15), one end of the spring (15) being hingedly connected to the end of the handle B (10), the notch (12) being arranged at the end of the outer wall of the handle A (9), and the other end of the spring (15) being able to be stuck in the notch (12) after the clamp heads A (2) and B (4) clamp the steel bar (18), so that the arcuate through groove A (5) and the arcuate through groove B (6) can elastically and tightly clamp the steel bar (18).

3. The radiation shielding cover for disassembling a built-in radioactive source according to claim 2 is characterized in that: A through hole (13) is provided at the end of the handle B (10), a hook (14) is provided at one end of the spring (15), the hook (14) and the through hole (13) are hingedly connected, and a ring body (16) is provided at the other end of the spring (15). After the clamp heads A (2) and B (4) clamp the steel bar (18), the ring body (16) can be stuck in the notch (12) so that the arcuate through groove A (5) and the arcuate through groove B (6) can elastically and tightly clamp the steel bar (18).

4. The radiation shielding cover for disassembling a built-in radioactive source according to claim 1 is characterized in that: The handle A (9) and the handle B (10) are both covered with a handle cover (11).

5. The radiation shielding cover for disassembling a built-in radioactive source according to claim 1 is characterized in that: The handle A (9) and the handle B (10) are respectively arc-shaped structures.

6. The radiation shielding cover for disassembling a built-in radioactive source according to claim 1 is characterized in that: Anti-slip grooves are provided in the arc-shaped through groove A (5) and the arc-shaped through groove B (6).

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