Marine right-angle edge covering type reactor cabin corner shielding structure and ship

Abstract

The invention provides a marine right-angle edge-covered reactor cabin corner shielding structure and a ship, the shielding structure is arranged in a frame-type grillwork of a reactor cabin, the shielding structure is a square structure which is formed by layered and partitioned layer-by-layer splicing, and the shielding structure comprises a shielding body, a thin steel plate, angle steel and a cladding steel plate. The shielding structure is tightly attached to the wall of a reactor cabin and laid outwards layer by layer, and the shielding body sequentially comprises a first shielding material, a second shielding material, a third shielding material and a fourth shielding material from inside to outside. The outer side of the shielding body is coated and fixed with a thin steel plate, and is welded and fixed with a group of angle steel; a covering steel plate is laid on the outer side of the reactor cabin structure and used for sealing the installation grids and protecting shielding materials in the reactor cabin. According to the technical scheme, the problems of shielding integrity and light weight of the arc-shaped corner part of the reactor cabin 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 ship-used right-angled hemmed-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. In order to reduce the radiation impact 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 ship-borne right-angled-edge reactor compartment corner shielding structure and 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 ship-based right-angled-edge-type reactor compartment corner shielding structure and a ship, which can solve the problems of shielding integrity and lightweight at the arc-shaped 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.

[0005] In one embodiment of the present invention, a ship-borne right-angled hemmed reactor compartment corner shielding structure is provided, which is arranged in a frame-type grid of a reactor compartment. The shielding structure is a square structure assembled layer by layer, and includes: a shielding body 1, a thin steel plate 2, an angle steel 3 and a covering steel plate 4.

[0006] The shielding structure is laid outward layer by layer close to the ship compartment bulkhead, and the shielding body 1, from inside to outside, comprises: a first shielding material, a second shielding material, a third shielding material and a fourth shielding material in sequence; each of the first shielding material, the second shielding material, the third shielding material and the fourth shielding material is divided into a structure including at least two layers, each layer having two blocks, and the number of layers and blocks of each layer is determined according to the total size of the shielding body 1;

[0007] A thin steel plate 2 is coated and fixed on the outside of the shielding body 1, and a group of angle steels 3 are welded and fixed; at the same time, a covering steel plate 4 is laid on the outside of the cabin structure for installing the grid seal to protect the shielding material inside the cabin.

[0008] Furthermore, the shielding body 1 includes one or more of lead, tungsten, iron polyethylene, boron-containing polyethylene, lead-boron polyethylene, heat-resistant resin-based material and boron aluminum.

[0009] Furthermore, the shielding body 1 is a layered and block-type plate structure assembled layer by layer, and the outer shielding material of the shielding body 1 surrounds and fixes the inner material in an "L" shape.

[0010] Furthermore, the first shielding material is lead with a thickness of 90 mm; the second shielding material is polyethylene with a thickness of 100 mm; the third shielding material is boron-containing polyethylene with a thickness of 110 mm; the fourth shielding material is lead-boron polyethylene with a thickness of 130 mm; the length of the installation grid is 1500 mm and the width is 1500 mm.

[0011] Furthermore, the lead layer is divided into 5 layers, 3 layers with a thickness of 20 mm and 2 layers with a thickness of 15 mm; the polyethylene is divided into 5 layers, each layer is 20 mm thick; the boron-containing polyethylene is divided into 6 layers, 4 layers with a thickness of 20 mm and 2 layers with a thickness of 15 mm; the lead-boron polyethylene is divided into 7 layers, 5 layers with a thickness of 20 mm and 2 layers with a thickness of 15 mm.

[0012] Furthermore, the polyethylene sheet is installed layer by layer on the upper part and the outer side of the lead shielding material, and then the polyethylene sheet is installed layer by layer on the side, and the polyethylene shielding material surrounds and fixes the lead shielding material in an "L" shape;

[0013] Install the upper boron-containing polyethylene shielding sheet layer by layer on the upper part and the outer side of the polyethylene shielding material, and then install the side boron-containing polyethylene shielding sheet layer by layer, and the boron-containing polyethylene shielding material surrounds and fixes the polyethylene shielding material in an "L" shape;

[0014] The upper lead-boron polyethylene shielding plate is installed layer by layer on the upper part and the outer side of the boron-containing polyethylene shielding material, and then the side lead-boron polyethylene shielding plate is installed layer by layer. The lead-boron polyethylene shielding material is in an "L" shape to surround and fix the boron-containing polyethylene shielding material.

[0015] Furthermore, the thickness of the thin steel plate 2 is 5 mm, and angle steels 3 are evenly welded and arranged on the outer side of the thin steel plate 2 .

[0016] In yet another embodiment of the present invention, there is provided a ship, the ship comprising a ship-use right-angled hemmed-type stack corner shielding structure 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 ship-used right-angled hemmed reactor compartment corner shielding structure and a ship, which are arranged in the frame-type grid of the reactor compartment. The shielding structure is a square structure assembled layer by layer, including: a shielding body, a thin steel plate, an angle steel and a covering steel plate. The shielding structure is laid outward layer by layer in close proximity to the reactor compartment bulkhead. The shielding body includes: a first shielding material, a second shielding material, a third shielding material and a fourth shielding material from the inside to the outside; a thin steel plate is coated and fixed on the outside of the shielding body, and a group of angle steels are welded and fixed; a covering steel plate is laid on the outside of the reactor compartment structure for installing the grid seal to protect the shielding material inside the reactor compartment. The technical scheme of the present invention can solve the problems of shielding integrity and lightweight at the arc-shaped 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 right-angled hemmed-type stack corner shielding structure for a ship according to an embodiment of the present invention;

[0020] In the figure, 1 is a shielding body, 2 is a thin steel plate, 3 is an angle steel, and 4 is a covering steel plate. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1 As shown, Figure 1 A schematic diagram showing a typical arrangement of a ship's right-angled-edge-type stack corner shielding structure according to an embodiment of the present invention.

[0023] In the figure, a ship-used right-angled hemmed reactor compartment corner shielding structure is arranged in a frame-type grid of a reactor compartment. The shielding structure is a square structure assembled layer by layer, and includes: a shielding body 1, a thin steel plate 2, an angle steel 3 and a covering steel plate 4.

[0024] The shielding structure is laid outward layer by layer close to the ship compartment bulkhead, and the shielding body 1, from inside to outside, comprises: a first shielding material, a second shielding material, a third shielding material and a fourth shielding material in sequence; each of the first shielding material, the second shielding material, the third shielding material and the fourth shielding material is divided into a structure including at least two layers, each layer having two blocks, and the number of layers and blocks of each layer is determined according to the total size of the shielding body 1;

[0025] A thin steel plate 2 is coated and fixed on the outside of the shielding body 1, and a group of angle steels 3 are welded and fixed; at the same time, a covering steel plate 4 is laid on the outside of the cabin structure for installing the grid seal to protect the shielding material inside the cabin.

[0026] In the embodiment of the present invention, a ship-used right-angled hemming-type reactor compartment corner shielding structure is arranged in the frame-type grid of the reactor compartment, in the form of a square structure assembled layer by layer, and fixed by welding with steel plates, angle steels, etc. The technical solution of the present invention has a simple structure, light weight, convenient assembly, and can be disassembled and maintained. It can be continuous and consistent with the shielding of other reactor compartments, ensure the closure and integrity of the shielding structure, minimize the leakage of reactor radiation to the surrounding area, and ensure the radiation safety of personnel and equipment in the surrounding area.

[0027] In one embodiment of the present invention, the shielding body 1 includes one or more of lead, tungsten, iron polyethylene, boron-containing polyethylene, lead-boron polyethylene, heat-resistant resin-based material and boron aluminum.

[0028] It can be understood that in other implementations of the present invention, the constituent materials of the shielding body 1 can be further adjusted according to specific needs, and no specific restrictions are imposed herein.

[0029] In one embodiment of the present invention, the shielding body 1 is a layered and block-type plate structure assembled layer by layer, and the outer shielding material of the shielding body 1 surrounds and fixes the inner material in an "L" shape.

[0030] In one embodiment of the present invention, the first shielding material is lead with a thickness of 90 mm; the second shielding material is polyethylene with a thickness of 100 mm; the third shielding material is boron-containing polyethylene with a thickness of 110 mm; the fourth shielding material is lead-boron polyethylene with a thickness of 130 mm; the length of the installation grid is 1500 mm and the width is 1500 mm.

[0031] In one embodiment of the present invention, the lead layer is divided into 5 layers, 3 layers with a thickness of 20 mm and 2 layers with a thickness of 15 mm; the polyethylene is divided into 5 layers, each layer is 20 mm thick; the boron-containing polyethylene is divided into 6 layers, 4 layers with a thickness of 20 mm and 2 layers with a thickness of 15 mm; the lead-boron polyethylene is divided into 7 layers, 5 layers with a thickness of 20 mm and 2 layers with a thickness of 15 mm.

[0032] It is understandable that in other embodiments of the present invention, according to the specific location and design requirements of the ship's right-angled hemming type bunker corner shielding structure, the specific number of layers and thickness of each layer of the first shielding material, the second shielding material, the third shielding material, and the fourth shielding material may be selected according to the specific location. The specific number of layers and thickness selection are not specifically limited here.

[0033] In one embodiment of the present invention, the polyethylene sheet is installed layer by layer on the upper part and the outer side of the lead shielding material, and then the polyethylene sheet is installed layer by layer on the side, and the polyethylene shielding material surrounds and fixes the lead shielding material in an "L" shape;

[0034] Install the upper boron-containing polyethylene shielding sheet layer by layer on the upper part and the outer side of the polyethylene shielding material, and then install the side boron-containing polyethylene shielding sheet layer by layer, and the boron-containing polyethylene shielding material surrounds and fixes the polyethylene shielding material in an "L" shape;

[0035] The upper lead-boron polyethylene shielding plate is installed layer by layer on the upper part and the outer side of the boron-containing polyethylene shielding material, and then the side lead-boron polyethylene shielding plate is installed layer by layer. The lead-boron polyethylene shielding material is in an "L" shape to surround and fix the boron-containing polyethylene shielding material.

[0036] In one embodiment of the present invention, the thickness of the thin steel plate 2 is 5 mm, and angle steels 3 are evenly welded and arranged on the outer side of the thin steel plate 2 .

[0037] In one embodiment of the present invention, the shielding body 1 comprises four shielding materials, which are lead (thickness 90 mm), polyethylene (thickness 100 mm), boron-containing polyethylene (thickness 110 mm), and lead-boron polyethylene (thickness 130 mm) from the inside to the outside. The grid length is 1500 mm and the width is 1500 mm. The specific implementation process of the technical solution of the present invention is described as follows:

[0038] Taking into account 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, lead is divided into 5 layers, 3 layers of 20mm thickness, and 2 layers of 15mm thickness; polyethylene is divided into 5 layers, each layer is 20mm thick; boron-containing polyethylene is divided into 6 layers, 4 layers of 20mm thickness, and 2 layers of 15mm thickness. Lead-boron polyethylene is divided into 7 layers, 5 layers of 20mm thickness, and 2 layers of 15mm thickness. The number of blocks in each layer is determined according to its total size, but it should be ensured that the weight of each piece of material does not exceed 25kg, and the size should not be too large for easy handling.

[0039] In an embodiment of the present invention, the shielding body of the right-angled hemming type bunker corner shielding structure can be composed of one or more of lead, tungsten, polyethylene, boron-containing polyethylene, lead-boron polyethylene, heat-resistant resin-based materials, boron aluminum, etc. The shielding body is assembled layer by layer with layered and block-type plates, and the outer shielding material should surround and fix the inner material in an "L" shape. After the shielding body is assembled, a layer of thin steel plate is coated and fixed on the outside, and the angle steel is welded and fixed to ensure the stability of the shielding body. Finally, a covering steel plate is laid on the outside of the bunker structure to install the grid seal and protect the internal shielding material.

[0040] Among them, in the embodiment of the present invention, a ship-used right-angled hemming type bunker corner shielding structure, the specific installation process includes:

[0041] Install the lead plates close to the bulkhead in sequence, stacking them layer by layer from bottom to top.

[0042] Install polyethylene sheets on the upper part and outside of the lead shield in sequence, with the upper sheet installed layer by layer first, and then the side sheet installed layer by layer. The polyethylene shield should be in an "L" shape to surround and fix the lead shield.

[0043] Install the boron-containing polyethylene sheets on the upper part and the outer side of the polyethylene shield in sequence, in the order of installing the upper sheets layer by layer first, and then installing the side sheets layer by layer. The boron-containing polyethylene shield should be in an "L" shape to surround and fix the polyethylene shield.

[0044] Install lead-boron polyethylene plates on the upper part and the outer side of the boron-containing polyethylene shield in sequence, in the order of installing the upper plates layer by layer first, and then installing the side plates layer by layer. The lead-boron polyethylene shield should be in an "L" shape to surround and fix the boron-containing polyethylene shield.

[0045] A layer of 5mm thick thin steel plate is welded and fixed on the outside of the shielding body, and angle steel is welded and fixed on its outside. The angle steels should be arranged as evenly as possible to ensure the stability of the shielding body.

[0046] The cladding steel plates are welded and fixed on the outside of the cabin structure to protect the internal shielding materials.

[0047] In yet another embodiment of the present invention, there is provided a ship, the ship comprising a ship-use right-angled hemmed-type stack corner shielding structure as described in any one of the above items.

[0048] The embodiment of the present invention provides a ship-used right-angled hemmed reactor compartment corner shielding structure and a ship, which are arranged in a frame-type grid of a reactor compartment. The shielding structure is a square structure assembled layer by layer, including: a shielding body, a thin steel plate, an angle steel and a covering steel plate. The shielding structure is laid outward layer by layer close to the reactor compartment bulkhead. The shielding body includes: a first shielding material, a second shielding material, a third shielding material and a fourth shielding material from the inside to the outside; a thin steel plate is coated and fixed on the outside of the shielding body, and a group of angle steels are welded and fixed; a covering steel plate is laid on the outside of the reactor compartment structure for installing the grid seal to protect the shielding material inside the reactor compartment.

[0049] The technical solution of the present invention can solve the problems of shielding integrity and lightweight at the arc-shaped 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.

[0050] 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 ship-based right-angled-edge reactor compartment corner shielding structure, arranged in a frame-type grid of a reactor compartment, characterized in that: The shielding structure is a square structure assembled layer by layer, comprising: a shielding body (1), a thin steel plate (2), an angle steel (3) and a covering steel plate (4); The shielding structure is laid outward layer by layer in close contact with the ship compartment bulkhead, and the shielding body (1) comprises, from inside to outside, a first shielding material, a second shielding material, a third shielding material and a fourth shielding material in sequence; each of the first shielding material, the second shielding material, the third shielding material and the fourth shielding material is divided into a structure including at least two layers, each layer having two blocks, and the number of layers and blocks of each layer is determined according to the total size of the shielding body (1); A layer of the thin steel plate (2) is coated and fixed on the outer side of the shielding body (1), and a group of angle steels (3) are welded and fixed; at the same time, the covering steel plate (4) is laid on the outer side of the cabin structure to install the grid seal and protect the shielding material inside the cabin.

2. A ship-used right-angled hemming-type bunker corner shielding structure according to claim 1, characterized in that: The shielding body (1) comprises one or more of lead, tungsten, iron polyethylene, boron-containing polyethylene, lead-boron polyethylene, heat-resistant resin-based material and boron aluminum.

3. A shipboard right-angled hemming type bunker corner shielding structure according to claim 2, characterized in that: The shielding body (1) is a layered and block-type plate structure assembled layer by layer, and the outer shielding material of the shielding body (1) surrounds and fixes the inner material in an "L" shape.

4. A shipboard right-angled hemming type bunker corner shielding structure according to claim 2, characterized in that: The first shielding material is lead with a thickness of 90 mm; the second shielding material is polyethylene with a thickness of 100 mm; the third shielding material is boron-containing polyethylene with a thickness of 110 mm; the fourth shielding material is lead-boron polyethylene with a thickness of 130 mm; the length of the installation grid is 1500 mm and the width is 1500 mm.

5. A shipboard right-angled hemming type bunker corner shielding structure according to claim 4, characterized in that: The lead layer is divided into 5 layers, 3 layers with a thickness of 20mm and 2 layers with a thickness of 15mm; the polyethylene is divided into 5 layers, each layer is 20mm thick; the boron-containing polyethylene is divided into 6 layers, 4 layers with a thickness of 20mm and 2 layers with a thickness of 15mm; the lead-boron polyethylene is divided into 7 layers, 5 layers with a thickness of 20mm and 2 layers with a thickness of 15mm.

6. A shipboard right-angled hemming type bunker corner shielding structure according to claim 4, characterized in that: The polyethylene sheets on the upper part and the outer side of the lead shielding material are installed layer by layer first, and then the polyethylene sheets on the side are installed layer by layer, and the polyethylene shielding material surrounds and fixes the lead shielding material in an "L" shape; Install the upper boron-containing polyethylene shielding sheet layer by layer on the upper and outer sides of the polyethylene shielding material, and then install the side boron-containing polyethylene shielding sheet layer by layer, the boron-containing polyethylene shielding material surrounds and fixes the polyethylene shielding material in an "L" shape; The upper lead-boron polyethylene shielding plate is installed layer by layer on the upper part and the outer side of the boron-containing polyethylene shielding material, and then the side lead-boron polyethylene shielding plate is installed layer by layer. The lead-boron polyethylene shielding material is in an "L" shape to surround and fix the boron-containing polyethylene shielding material.

7. A shipboard right-angled hemming type bunker corner shielding structure according to claim 4, characterized in that: The thickness of the thin steel plate (2) is 5 mm, and the angle steel (3) is evenly welded and arranged on the outer side of the thin steel plate (2).

8. A ship, characterized in that: The ship comprises a ship-use right-angled hemmed-type bunker corner shielding structure as described in any one of claims 1 to 7.

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