Marine casting molding reactor cabin corner shielding structure and ship

Abstract

The invention provides a marine cast-molded reactor cabin corner shielding structure and a ship, the marine cast-molded reactor cabin corner shielding structure is arranged in a frame type structure of an arc corner of a reactor cabin, and the shielding structure is an integrated cast-molded structure and comprises a shielding body, a template, a covering steel plate, a casting hole and a vent hole. The template is an arc-shaped steel plate and is connected to a reactor cabin structure of the reactor cabin, a pouring hole and a vent hole are reserved in the template, and a space defined by the template and the reactor cabin structure is a pouring area filled with a shielding material; the shielding body is a cured material of a shielding material, and the shielding material is injected into a space defined by the template and the stacking cabin structure through the pouring hole and the vent hole; the covering steel plate is welded and fixed to the outer side of the stacking cabin structure and used for sealing the shielding grids and protecting the shielding materials in the shielding grids. According to the technical scheme, the shielding body can be lightened as much as possible while the shielding integrity of the ship reactor cabin is guaranteed, and production and installation of shielding materials are facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear radiation protection, and in particular relates to a marine cast-molded 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 cast-molded bunker corner shielding structure and a ship that can ensure the integrity of the marine bunker shielding while making the shielding body as lightweight as possible and facilitating the production and installation of shielding materials 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 cast-molded bunker corner shielding structure and a ship, which can ensure the integrity of the marine bunker shielding while making the shielding body as lightweight as possible, thereby facilitating the production and installation of shielding materials.

[0005] In one embodiment of the present invention, a marine cast-molded reactor compartment corner shielding structure is provided, which is arranged in a frame structure at the arc-shaped corner of the reactor compartment. The shielding structure is an integrated cast-molded structure, including: a shielding body 1, a template 2, a covering steel plate 3, a casting hole 4 and a vent hole 5.

[0006] The template 2 is an arc-shaped steel plate connected to the reactor compartment structure. The template 2 is reserved with a pouring hole 4 and a vent hole 5. The space enclosed by the template 2 and the reactor compartment structure is a pouring area filled with shielding material.

[0007] The shielding body 1 is a solidified product of the shielding material, and the shielding material is injected into the space enclosed by the template 2 and the stack structure through the pouring hole 4 and the vent hole 5;

[0008] The cladding steel plate 3 is welded and fixed to the outside of the stack structure to seal the shielding grid and protect the shielding material inside.

[0009] Furthermore, the template 2 is formed by welding a group of block templates, and the template 2 is welded to the reactor compartment structure of the reactor compartment.

[0010] Furthermore, the template 2 is welded to the reactor compartment structure, including:

[0011] The template 2 is welded to the stack structure at 500 mm according to the designed position, and the gap between the template 2 and the stack structure is filled or welded to ensure that the space enclosed by the template and the stack structure is leak-proof.

[0012] Furthermore, the casting area filled with the shielding material is ensured to prevent leakage of the shielding material by at least caulking and welding.

[0013] Furthermore, the shielding material is shielding putty, which is pressurized and injected into the casting area through the casting hole 4 and the vent hole 5, and the casting hole 4 and the vent hole 5 are sealed after the casting area is filled.

[0014] In yet another embodiment of the present invention, a ship is provided, the ship comprising a marine cast-molded stack corner shielding structure as described in any one of the above items.

[0015] The beneficial effects brought by the present invention are as follows:

[0016] It can be seen from the above scheme that the embodiment of the present invention provides a marine cast-molded reactor compartment corner shielding structure and a ship, which are arranged in a frame structure at the arc-shaped corner of the reactor compartment, and the shielding structure is an integrated cast-molded structure, including: a shielding body, a template, a covering steel plate, a casting hole and a vent. The template is an arc-shaped steel plate, which is connected to the reactor compartment structure of the reactor compartment. The template reserves casting holes and vents, and the space enclosed by the template and the reactor compartment structure is a casting area for filling shielding material; the shielding body is a solidified product of the shielding material, and the shielding material is injected into the space enclosed by the template and the reactor compartment structure through the casting holes and vents; the covering steel plate is welded and fixed to the outside of the reactor compartment structure, and is used to seal the shielding grid and protect the shielding material inside. The technical scheme of the present invention can make the shielding body as lightweight as possible while ensuring the integrity of the marine reactor compartment shielding, so as to facilitate the production and installation of the shielding material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A horizontal cross-sectional schematic diagram showing a marine cast-molded bunker corner shielding structure according to an embodiment of the present invention;

[0018] Figure 2 A schematic longitudinal section diagram showing a marine cast-molded bunker corner shielding structure according to an embodiment of the present invention;

[0019] In the figure, 1 is a shielding body, 2 is a template, 3 is a covering steel plate, 4 is a pouring hole, and 5 is a vent hole. DETAILED DESCRIPTION

[0020] 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.

[0021] In order to solve the problems of shielding integrity, lightweight, production and installation of arc-shaped corners of reactor compartments in nuclear-powered ships and nuclear-powered floating platforms, an embodiment of the present invention proposes a marine cast-molded reactor compartment corner shielding structure.

[0022] like Figure 1 and Figure 2 As shown, Figure 1 A schematic horizontal cross-sectional view of a marine cast-molded bunker corner shielding structure according to an embodiment of the present invention; Figure 2 A schematic longitudinal section diagram of a marine cast-molded stack corner shielding structure according to an embodiment of the present invention is shown.

[0023] In the figure, a marine cast-molded reactor compartment corner shielding structure is arranged in a frame structure at the arc-shaped corner of the reactor compartment. The shielding structure is an integral cast-molded structure, including: a shielding body 1, a template 2, a covering steel plate 3, a casting hole 4 and a vent hole 5.

[0024] The template 2 is an arc-shaped steel plate connected to the reactor compartment structure. The template 2 is reserved with a pouring hole 4 and a vent hole 5. The space enclosed by the template 2 and the reactor compartment structure is a pouring area filled with shielding material.

[0025] The shielding body 1 is a solidified product of the shielding material, and the shielding material is injected into the space enclosed by the template 2 and the stack structure through the pouring hole 4 and the vent hole 5;

[0026] The cladding steel plate 3 is welded and fixed to the outside of the stack structure to seal the shielding grid and protect the shielding material inside.

[0027] In the embodiment of the present invention, the template 2 is formed by welding a group of block templates, and the template 2 is welded to the reactor compartment structure of the reactor compartment.

[0028] In the embodiment of the present invention, the template 2 is welded to the reactor compartment structure of the reactor compartment, and includes:

[0029] The template 2 is welded to the stack structure at 500 mm according to the designed position, and the gap between the template 2 and the stack structure is filled or welded to ensure that the space enclosed by the template and the stack structure is leak-proof.

[0030] In one embodiment of the present invention, the casting area filled with the shielding material is ensured to prevent leakage of the shielding material by at least caulking and welding.

[0031] In one embodiment of the present invention, the shielding material is shielding putty, which is pressurized and injected into the casting area through the casting hole 4 and the vent hole 5, and the casting hole 4 and the vent hole 5 are sealed after the casting area is filled.

[0032] In the embodiment of the present invention, the template 2 is an arc-shaped steel plate, which can be welded together from multiple pieces and welded to the stack structure. The space enclosed by the template 2 and the stack structure is the shielding putty pouring area, and this space should be ensured to be leak-proof through caulking, welding and other measures.

[0033] The shielding body 1 is a solidified product of the shielding putty, which is injected into the space enclosed by the template and the stack structure through the pouring hole 4 and the vent hole 5. The integrity of the putty pouring and the absence of air cavities and cracks should be ensured.

[0034] Among them, the cladding steel plate is welded and fixed to the outside of the cabin structure to seal the shielding grid and protect the internal shielding material.

[0035] The technical solution of the present invention is a marine cast-molded reactor compartment corner shielding structure, which is arranged in a frame structure at the arc-shaped corner of the reactor compartment and is cast in one piece by pre-setting a template. The outstanding advantages are: simple structure, light weight and convenient construction.

[0036] In one embodiment of the present invention, a cast-molded reactor compartment corner shielding structure is arranged in a frame structure of a reactor compartment arc-shaped corner, and is cast-molded in one piece by pre-setting a template. The shielding structure 5 is composed of a shielding body 1, a template 2, a cladding steel plate 3, a casting hole 4, and a vent hole 5.

[0037] The following takes the shielding body with a thickness of 500 mm as an example to illustrate the specific implementation process of the present invention:

[0038] Taking into account the structure of the cabin and the thickness of the shield, an arc-shaped steel template is made. The template can be cut into multiple pieces, and pouring holes and exhaust holes are reserved on the template.

[0039] After the construction conditions are met, weld the template to the bunker structure at 500mm from the designed position. The gaps need to be filled or welded to ensure that the space enclosed by the template and the bunker structure is leak-proof.

[0040] The shielding putty pouring pipe is pulled to connect the pouring hole and the exhaust hole, and the shielding putty is injected under pressure to ensure that the shielding putty is filled with no cavity. After the shielding putty is filled, the opening is blocked and it is cured and formed by natural reaction.

[0041] The cladding steel plates are welded and fixed on the outside of the cabin structure to seal the shielding grid and protect the internal shielding materials.

[0042] In yet another embodiment of the present invention, a ship is provided, the ship comprising a marine cast-molded stack corner shielding structure as described in any one of the above items.

[0043] In an embodiment of the present invention, a marine cast-molded reactor compartment corner shielding structure is arranged in a frame structure of a reactor compartment arc corner, and is cast in one piece by pre-setting a template. The technical solution of the present invention is a marine cast-molded reactor compartment corner shielding structure, which has a simple structure, light weight, and convenient construction.

[0044] 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 cast-molded reactor compartment corner shielding structure, arranged in a frame structure at a circular arc corner of a reactor compartment, characterized in that: The shielding structure is an integral casting structure, comprising: a shielding body (1), a template (2), a cladding steel plate (3), a casting hole (4) and a vent hole (5); The template (2) is an arc-shaped steel plate connected to the reactor compartment structure. The template (2) reserves the pouring holes (4) and the vent holes (5). The space enclosed by the template (2) and the reactor compartment structure is a pouring area for filling shielding material. The shielding body (1) is a solidified product of the shielding material, and the shielding material is injected into the space enclosed by the template (2) and the stack structure through the pouring hole (4) and the vent hole (5); The cladding steel plate (3) is welded and fixed to the outside of the stack structure, and is used to seal the shielding grid and protect the shielding material inside it.

2. A marine casting-molded bunker corner shielding structure according to claim 1, characterized in that: The template (2) is formed by welding a group of block templates, and the template (2) is welded to the reactor compartment structure of the reactor compartment.

3. A marine casting-molded bunker corner shielding structure according to claim 1, characterized in that: The template (2) is welded to the reactor compartment structure of the reactor compartment, and comprises: The template (2) is welded to the stack structure at a position 500 mm from the design position, and the gap between the template (2) and the stack structure is filled or welded to ensure that the space enclosed by the template and the stack structure is leak-proof.

4. A marine casting-molded bunker corner shielding structure according to claim 1, characterized in that: The casting area filled with the shielding material is ensured to prevent leakage of the shielding material by at least caulking and welding.

5. The marine casting-molded bunker corner shielding structure according to claim 1 is characterized in that: The shielding material is shielding putty, which is pressurized and injected into the casting area through the casting hole (4) and the vent hole (5), and the casting hole (4) and the vent hole (5) are sealed after the casting area is filled.

6. A ship, characterized in that: The ship comprises a marine cast-molded bunker corner shielding structure as described in any one of claims 1 to 5.

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