Marine polygonal fold line type reactor cabin corner shielding structure and ship

Abstract

The invention provides a multilateral fold line type reactor cabin corner shielding structure for a ship and the ship, which are arranged in a frame type grillwork of an arc corner of a reactor cabin and comprise a filling material, a shielding material A, fixed steel bars, a shielding material B, a shielding material C, angle steel and a cladding steel plate. In the frame type structure of the circular arc corner of the reactor cabin, the shielding structures are laid outwards layer by layer in a manner of clinging to the wall of the reactor cabin; filling materials filled in a special shape are arranged in the shielding inner layer, and the arc-shaped shielding structure in the frame-type structure is optimized into a multi-section broken line type shielding structure; and the fixing strip steel is used for welding and fixing after the shielding material A is laid, and the unoccupied part of the layer is filled and leveled up with the shielding material B. According to the technical scheme, the problems of shielding integrity and light weight of the reactor cabin corner part in a nuclear power ship and a nuclear power floating platform can be solved, leakage of reactor radiation to the peripheral area is weakened to the maximum extent, and the radiation safety of personnel and equipment in the peripheral area is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear radiation protection, and in particular relates to a marine multilateral zigzag-line type bunker corner shielding structure and a ship. Background Art

[0002] At present, nuclear-powered ships and nuclear-powered floating platforms usually adopt a large-sized square reactor compartment structure. To avoid stress concentration, the corners of the reactor compartment generally adopt an arc-shaped structure. In order to reduce the radiation effect of neutrons, gamma rays and other radioactive rays in the reactor compartment on personnel in adjacent compartments, a reactor compartment shield is set in the reactor compartment structure.

[0003] Therefore, how to provide a marine multilateral zigzag reactor compartment corner shielding structure and a ship that can solve the shielding integrity and lightweight problems of the reactor compartment corners in nuclear-powered ships and nuclear-powered floating platforms, minimize the leakage of reactor radiation to the surrounding areas, and ensure the radiation safety of personnel and equipment in the surrounding areas has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The embodiment of the present invention provides a marine multilateral zigzag reactor compartment corner shielding structure and a ship, which can solve the shielding integrity and lightweight problems of the reactor compartment corners in nuclear-powered ships and nuclear-powered floating platforms, minimize the leakage of reactor radiation to the surrounding areas, and ensure the radiation safety of personnel and equipment in the surrounding areas.

[0005] In one embodiment of the present invention, a ship-based multilateral zigzag reactor compartment corner shielding structure is provided, which is arranged in a frame-type grid at the arc-shaped corner of the reactor compartment. The shielding structure is a multi-segment zigzag shielding structure, including: filling material 1, shielding material A2, fixed steel bars 3, shielding material B4, shielding material C5, angle steel 6 and covering steel plate 7.

[0006] In the frame structure of the arc-shaped corner of the reactor compartment, the shielding structure is laid outward layer by layer, close to the compartment wall; a special-shaped filling material 1 is arranged in the inner layer of the shielding to optimize the arc-shaped shielding structure in the frame structure into a multi-segment zigzag shielding structure; a fixed steel bar 2 is used for welding and fixing the shielding material A1 after the laying is completed, wherein the remaining part of this layer is filled with the shielding material B3.

[0007] Angle steel 6 is used for welding and fixing after the shielding material C5 is laid; cladding steel plate 7 is laid on the outside of the reactor compartment structure and is used for installing the grid seal to protect the internal shielding material of the reactor compartment structure;

[0008] In the shielding structure, from inside to outside, there are shielding material A2, shielding material B4 and shielding material C5.

[0009] Furthermore, the innermost layer of the polygonal zigzag type cabin corner shielding structure is a special-shaped filling material 1 comprising at least lead, iron or filled shielding putty, and the surface of the filling material 1 is flat after filling. On this basis, shielding material A2, shielding material B4 and shielding material C5 are laid outward layer by layer to form a polygonal zigzag type corner shielding structure assembled in layers.

[0010] Furthermore, the shielding material A2 is one or more of heavy material including at least lead, tungsten and iron.

[0011] Furthermore, the shielding material B4 includes at least one of polyethylene, heat-resistant resin-based materials and lightweight materials with certain heat insulation properties.

[0012] Furthermore, the shielding material C5 includes at least one or more of polyethylene, boron-containing polyethylene, lead-boron polyethylene and heat-resistant resin-based materials.

[0013] Furthermore, the shielding material A2 is divided into 5 layers, including: 3 layers with a thickness of 20 mm and 2 layers with a thickness of 15 mm; the shielding material B4 is 1 layer with a thickness of 10 mm; the shielding material C5 is divided into 12 layers, including: 10 layers with a thickness of 25 mm and 2 layers with a thickness of 15 mm.

[0014] Furthermore, in shielding material A2, shielding material B4 and shielding material C5, each layer is divided into 15 block structures; among them, in the height direction, each block is 300 mm, and a total of 5 blocks; in the width direction, it is divided into 4 blocks, equally divided according to the angle.

[0015] Furthermore, in the shielding material A2, the shielding material B4 and the shielding material C5, each of the split block structures does not exceed 500mm*500mm, and the thickness of each layer is one of 10mm, 15mm, 20mm and 25mm.

[0016] In yet another embodiment of the present invention, a ship is provided, the ship comprising a multi-sided zigzag-line stack corner shielding structure for a ship as described in any one of the above items.

[0017] The beneficial effects brought by the present invention are as follows:

[0018] It can be seen from the above scheme that the embodiment of the present invention provides a marine multilateral zigzag reactor compartment corner shielding structure and a ship, which are arranged in the frame-type grid at the arc-shaped corner of the reactor compartment, and the shielding structure is a multi-segment zigzag shielding structure, including: filling material, shielding material A, fixed steel bars, shielding material B, shielding material C, angle steel and cladding steel plate. In the frame-type structure at the arc-shaped corner of the reactor compartment, the shielding structure is laid outward layer by layer close to the reactor compartment bulkhead; a special-shaped filling material is arranged in the inner layer of the shielding to optimize the arc-shaped shielding structure in the frame-type structure into a multi-segment zigzag shielding structure; the fixed steel bars are used for welding and fixing after the shielding material A is laid, and the remaining part of this layer is filled with shielding material B. The technical scheme of the present invention can solve the problems of shielding integrity and lightweight at the corners of the reactor compartment in nuclear-powered ships and nuclear-powered floating platforms, minimize the leakage of reactor radiation to the surrounding area, and ensure the radiation safety of personnel and equipment in the surrounding area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram showing a typical arrangement of a multi-sided zigzag-line stack corner shielding structure for a ship according to an embodiment of the present invention;

[0020] Figure 2 A schematic cross-sectional structure diagram of a multi-sided zigzag-line type bunker corner shielding structure for a ship according to an embodiment of the present invention;

[0021] Figure 3 A schematic diagram showing a single-layer component structure of a multi-sided zigzag-line stack corner shielding structure for a ship according to an embodiment of the present invention;

[0022] In the figure, 1 is the filling material, 2 is the shielding material A, 3 is the fixing bar steel, 4 is the shielding material B, 5 is the shielding material C, 6 is the angle steel, and 7 is the covering steel plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figures 1 to 3 As shown, Figure 1 A schematic diagram showing a typical arrangement of a multi-sided zigzag-line stack corner shielding structure for a ship according to an embodiment of the present invention; Figure 2 A schematic cross-sectional structure diagram of a multi-sided zigzag-line type bunker corner shielding structure for a ship according to an embodiment of the present invention; Figure 3A schematic diagram of a single-layer component structure of a multi-sided zigzag-line stack corner shielding structure for a ship according to an embodiment of the present invention is shown.

[0025] In the figure, a ship-based multilateral zigzag reactor compartment corner shielding structure is arranged in a frame-type grid at the arc-shaped corner of the reactor compartment. The shielding structure is a multi-segment zigzag shielding structure, including: filling material 1, shielding material A2, fixed steel bars 3, shielding material B4, shielding material C5, angle steel 6 and covering steel plate 7.

[0026] In the frame structure of the arc-shaped corner of the reactor compartment, the shielding structure is laid outward layer by layer, close to the compartment wall; a special-shaped filling material 1 is arranged in the inner layer of the shielding to optimize the arc-shaped shielding structure in the frame structure into a multi-segment zigzag shielding structure; a fixed steel bar 2 is used for welding and fixing the shielding material A1 after the laying is completed, wherein the remaining part of this layer is filled with the shielding material B3.

[0027] Angle steel 6 is used for welding and fixing after the shielding material C5 is laid; cladding steel plate 7 is laid on the outside of the reactor compartment structure and is used for installing the grid seal to protect the internal shielding material of the reactor compartment structure;

[0028] In the shielding structure, from inside to outside, there are shielding material A2, shielding material B4 and shielding material C5.

[0029] In an embodiment of the present invention, a multi-sided zigzag reactor compartment corner shielding structure for a ship is arranged in a frame-type grid of a reactor compartment, and a special-shaped filling material is arranged in the inner layer of the shielding to adjust the arc-shaped structure to a multi-segment zigzag line, thereby optimizing the arc-shaped shielding structure to a multi-segment zigzag shielding structure. The technical solution of the present invention, the multi-sided zigzag reactor compartment corner shielding structure for a ship has a simple structure, light weight, and greatly reduced production and installation difficulty.

[0030] In another embodiment of the present invention, the innermost layer of the polygonal zigzag type cabin corner shielding structure is a special-shaped filling material 1 comprising at least lead, iron or filled shielding putty. The surface of the filling material 1 is flat after filling. On this basis, shielding material A2, shielding material B4 and shielding material C5 are laid outward layer by layer to form a polygonal zigzag corner shielding structure assembled in layers.

[0031] In another embodiment of the present invention, the shielding material A2 is one or more of heavy material including at least lead, tungsten and iron.

[0032] In another embodiment of the present invention, the shielding material B4 includes at least one of polyethylene, heat-resistant resin-based materials and lightweight materials with certain heat insulation properties.

[0033] In another embodiment of the present invention, the shielding material C5 includes at least one or more of polyethylene, boron-containing polyethylene, lead-boron polyethylene and heat-resistant resin-based materials.

[0034] It is understandable that in other implementations of the present invention, the shielding material A2, the shielding material B4 and the shielding material C5 may also be made of other shielding materials that meet the requirements, and the specific material types are not specifically limited herein.

[0035] In another embodiment of the present invention, the shielding material A2 is divided into 5 layers, including: 3 layers with a thickness of 20 mm and 2 layers with a thickness of 15 mm; the shielding material B4 is 1 layer with a thickness of 10 mm; the shielding material C5 is divided into 12 layers, including: 10 layers with a thickness of 25 mm and 2 layers with a thickness of 15 mm.

[0036] In another embodiment of the present invention, each layer of shielding material A2, shielding material B4 and shielding material C5 is divided into 15 block structures; among them, in the height direction, each block is 300 mm, and a total of 5 blocks; in the width direction, it is divided into 4 blocks, equally divided according to the angle.

[0037] In another embodiment of the present invention, in the shielding material A2, the shielding material B4 and the shielding material C5, each of the split block structures does not exceed 500mm*500mm, and the thickness of each layer is one of 10mm, 15mm, 20mm and 25mm.

[0038] In the embodiment of the present invention, the shielding materials are shielding material A, shielding material B, and shielding material C from the inside to the outside. Shielding material A can be one or more heavy materials such as lead, tungsten, and iron. The fixed steel bar is used for welding and fixing after the shielding material A is laid, and the remaining part of this layer is filled with shielding material B. Shielding material B can be a light material with certain thermal insulation properties such as polyethylene and heat-resistant resin-based materials. Shielding material C can be one or more of polyethylene, boron-containing polyethylene, lead-boron polyethylene, heat-resistant resin-based materials, etc. Angle steel is used for welding and fixing after the shielding material C is laid. The cladding steel plate is laid on the outside of the cabin structure to install the grid seal and protect the internal shielding material.

[0039] A marine multilateral zigzag reactor compartment corner shielding structure is arranged in a frame structure at the arc-shaped corner of the reactor compartment. By arranging special-shaped filling materials in the inner layer of the shielding, the arc-shaped structure is adjusted to multiple zigzag lines, and the arc-shaped shielding structure is further optimized to a multi-segment zigzag shielding structure.

[0040] Taking the case where the filling material is lead, the shielding material A is lead (thickness 90 mm), the shielding material B is polyethylene (thickness 10 mm), the shielding material C is polyethylene (thickness 280 mm), the grid height is 1500 mm, and the arc radius of the bulkhead is 1000 mm as an example, the implementation process of the technical solution of the present invention is specifically described:

[0041] Considering the density of the material and the size of the grid, the shielding material is divided into multiple layers, and each layer of material is divided into multiple blocks. Specifically: shielding material A (lead) is divided into 5 layers, 3 layers with a thickness of 20mm, and 2 layers with a thickness of 15mm; shielding material B (polyethylene) is divided into 1 layer with a thickness of 10mm; shielding material C (polyethylene) is divided into 12 layers, 10 layers with a thickness of 25mm, and 2 layers with a thickness of 15mm. Each layer is divided into 15 blocks, of which one is about 300mm in height, and is divided into 5 blocks in total; it is divided into 4 blocks in width, which are equally divided according to the angle. Ensure that the weight of each piece of material does not exceed 25kg. In design and production, special attention should be paid to the matching of the sizes of each shielding material to avoid excessive installation gaps.

[0042] Among them, the installation process of a marine multilateral zigzag type bunker corner shielding structure is as follows:

[0043] Install special-shaped filler material lead to convert the arc-shaped bulkhead into a multi-segment flat surface.

[0044] Install shielding material A (lead) from bottom to top and from left to right. After installing one layer and filling the seams, start installing the next layer until all shielding material A is installed.

[0045] Weld and fix the steel bars, arrange the steel bars evenly, ensure that all shielding material A (lead) is compacted to ensure effective fixation of shielding material A (lead), and fill the remaining part of this layer with shielding material B (polyethylene).

[0046] Install shielding material C (polyethylene). The installation principles and sequence are similar to those of shielding material A (lead).

[0047] Angle steels are welded on the outside of the shielding material C (polyethylene), and the angle steels are evenly arranged to ensure that all shielding materials C (polyethylene) are compacted to ensure effective fixation of the shielding material.

[0048] Steel cladding plates are welded and fixed on the outside of the cabin structure to protect the internal shielding materials.

[0049] In yet another embodiment of the present invention, a ship is provided, the ship comprising a multi-sided zigzag-line stack corner shielding structure for a ship as described in any one of the above items.

[0050] The embodiment of the present invention provides a marine multilateral zigzag reactor compartment corner shielding structure and a ship, which are arranged in a frame-type grid at the arc-shaped corner of the reactor compartment, and the shielding structure is a multi-segment zigzag shielding structure, including: filling material, shielding material A, fixed steel bars, shielding material B, shielding material C, angle steel and cladding steel plate. In the frame-type structure at the arc-shaped corner of the reactor compartment, the shielding structure is laid outward layer by layer close to the reactor compartment bulkhead; a filling material with a special-shaped filling is arranged in the inner layer of the shielding, and the arc-shaped shielding structure in the frame-type structure is optimized into a multi-segment zigzag shielding structure; the fixed steel bars are used for welding and fixing after the shielding material A is laid, and the remaining part of this layer is filled with shielding material B.

[0051] The technical solution of the present invention can solve the problems of shielding integrity and lightweight at the corners of the reactor compartment in nuclear-powered ships and nuclear-powered floating platforms, minimize the leakage of reactor radiation to the surrounding areas, and ensure the radiation safety of personnel and equipment in the surrounding areas.

[0052] The above are preferred embodiments 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 within the scope of protection of the present invention.

Claims

1. A marine multi-sided zigzag reactor compartment corner shielding structure, arranged in a frame-type grid at a circular arc corner of a reactor compartment, characterized in that: The shielding structure is a multi-section folded-line shielding structure, comprising: a filling material (1), a shielding material A (2), a fixing steel bar (3), a shielding material B (4), a shielding material C (5), an angle steel (6) and a cladding steel plate (7); In the frame structure of the arc-shaped corner of the reactor compartment, the shielding structure is laid outward layer by layer in close contact with the reactor compartment wall; the filling material (1) with a special shape filling is arranged in the inner layer of the shielding to optimize the arc-shaped shielding structure in the frame structure into a multi-segment folded line shielding structure; the fixing steel bar (2) is used for welding and fixing the shielding material A (1) after the shielding material A (1) is laid, wherein the remaining part of this layer is filled with the shielding material B (3); The angle steel (6) is used for welding and fixing the shielding material C (5) after it is laid. The cladding steel plate (7) is laid on the outside of the reactor compartment structure and is used for installing the grid seal to protect the internal shielding material of the reactor compartment structure. In the shielding structure, from inside to outside, there are shielding material A (2), shielding material B (4) and shielding material C (5).

2. A multi-ship side fold line type bunker corner shielding structure according to claim 1, characterized in that: The innermost layer of the polygonal zigzag-line corner shielding structure is a special-shaped filling material (1) comprising at least lead, iron or filled shielding putty. The surface of the filling material (1) is flat after filling. On this basis, the shielding material A (2), the shielding material B (4) and the shielding material C (5) are laid outward layer by layer to form a polygonal zigzag-line corner shielding structure assembled in layers.

3. A multi-sided zigzag-line ship compartment corner shielding structure according to claim 2, characterized in that: The shielding material A (2) is one or more heavy material including at least lead, tungsten and iron.

4. A multi-sided zigzag-line ship compartment corner shielding structure according to claim 2, characterized in that: The shielding material B (4) is at least one of lightweight materials with certain heat insulation properties, including polyethylene and heat-resistant resin-based materials.

5. A multi-sided zigzag-line ship compartment corner shielding structure according to claim 2, characterized in that: The shielding material C (5) includes at least one or more of polyethylene, boron-containing polyethylene, lead-boron polyethylene and heat-resistant resin-based materials.

6. A multi-sided zigzag-line ship compartment corner shielding structure according to claim 2, characterized in that: The shielding material A (2) is divided into 5 layers, including: 3 layers with a thickness of 20 mm and 2 layers with a thickness of 15 mm; the shielding material B (4) is 1 layer with a thickness of 10 mm; the shielding material C (5) is divided into 12 layers, including: 10 layers with a thickness of 25 mm and 2 layers with a thickness of 15 mm.

7. A ship arc-shaped stack corner shielding structure according to claim 6, characterized in that: Each layer of the shielding material A (2), shielding material B (4) and shielding material C (5) is divided into 15 block structures; in the height direction, each block is 300 mm long, and a total of 5 blocks are divided; in the width direction, it is divided into 4 blocks, which are equally divided according to the angle.

8. The arc-shaped ship compartment corner shielding structure according to claim 7, characterized in that: In the shielding material A (2), shielding material B (4) and shielding material C (5), each of the split block structures does not exceed 500mm*500mm, and the thickness of each layer is one of 10mm, 15mm, 20mm and 25mm.

9. A ship, characterized in that: The ship comprises a multi-sided zigzag-line bunker corner shielding structure for ships as described in any one of claims 1 to 8.

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