Aluminum-based boron carbide nuclear waste storage tank

Abstract

The utility model relates to the technical field of nuclear waste management, and discloses an aluminum-based boron carbide nuclear waste storage tank which comprises a front shock absorber, the bottom of the front shock absorber is fixedly connected with a front supporting seat, holes are formed in the two sides of the bottom of the front supporting seat, and auxiliary assemblies are arranged in the holes. The structural strength of the storage tank is enhanced by arranging the auxiliary assemblies, the reinforcing supporting rods and the auxiliary transverse rods, ground moisture can be effectively prevented from entering the surface of the storage tank through laying of the moisture-proof plates, and therefore the outer surface of the tank body is protected against erosion influence of moisture; and since the enriched boron has a larger neutron absorption cross section, the enriched boron can absorb neutrons more effectively than natural boron, so that the radiation level of a nuclear material can be reduced more efficiently, the tungsten-nickel-iron alloy has higher radiation resistance and is not easy to be damaged by radiation, the long-term stability of the shielding layer can be maintained, and the service life of the shielding layer is prolonged. And the performance reduction of the shielding layer caused by radiation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear waste management, in particular to an aluminum-based boron carbide nuclear waste storage tank. Background Art

[0002] As the nuclear fuel in the reactor is consumed more and more, nuclear fuel fission can no longer maintain the power generation capacity of the nuclear power plant. The unburned nuclear fuel that is replaced is called spent fuel. Since spent fuel contains a large amount of radioactive elements and has strong radioactivity, it must be properly handled.

[0003] The existing nuclear waste storage tanks are not ideal for shielding high-activity nuclear waste, and because they contain lead layers, if they are not handled properly, they will cause serious environmental pollution and have adverse effects on human health. At the same time, when storing large-sized tanks, the overall stability is also very important. To ensure that they have sufficient structural support strength, the outer surface of the tank needs to be protected from moisture erosion and moisture damage. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an aluminum-based boron carbide nuclear waste storage tank.

[0005] The utility model is implemented by the following technical scheme: an aluminum-based boron carbide nuclear waste storage tank, comprising a front shock absorber, the bottom of the front shock absorber is fixedly connected to a front support seat, holes are opened on both sides of the bottom of the front support seat, auxiliary components are arranged inside the holes, and a first sealing cover is arranged on one side of the front shock absorber;

[0006] The auxiliary component includes a reinforcing support rod, which is inserted into the inside of the hole, and an auxiliary cross bar is fixedly connected to the surface of the reinforcing support rod. Grooves are provided at both ends of the reinforcing support rod, and positioning pins are provided inside the grooves. Extension blocks are fixedly connected to both sides of the bottom of the front support seat, and the bottom of the positioning pin is inserted into the surface of the extension block. A moisture-proof plate is provided on the upper surface of the auxiliary cross bar, and the surface of the moisture-proof plate is made of stainless steel.

[0007] Through the above technical solution, the reinforcing support rods can be inserted into the holes to increase the lateral support strength and improve the stability of the entire storage tank. The auxiliary cross bars increase the longitudinal support strength and further strengthen the structural strength of the storage tank. The design of the grooves and locating pins allows the positions of the reinforcing support rods and the auxiliary cross bars to be accurately adjusted and fixed, thereby improving the flexibility and accuracy of assembly. The laying of moisture-proof boards can effectively prevent ground moisture from entering the surface of the storage tank, thereby protecting the outer surface of the tank body from moisture erosion, avoiding the problem of moisture damage to the outer surface of the tank body, and extending the service life of the storage tank. Moreover, since its surface material is stainless steel, it has excellent corrosion resistance and can maintain stability in harsh environments.

[0008] As a further improvement of the above solution, one side of the first sealing cover is fixedly connected to an outer cover, and the surface of the outer cover is fixedly connected to the tank body.

[0009] Through the above technical solution, the combination of the first sealing cover and the outer cover can form a double sealing effect, which helps to better isolate the external environment, reduce the risk of leakage, and improve overall safety.

[0010] As a further improvement of the above solution, a rear shock absorber is fixedly connected to one end of the tank body, and a hanging basket is provided on one side of the inner wall of the tank body.

[0011] Through the above technical solution, shock absorbers are set at the front and back to protect the tank from damage when it is impacted, thus ensuring the safety of nuclear waste.

[0012] As a further improvement of the above solution, a guide sleeve is arranged inside the tank body.

[0013] Through the above technical solution, when using lifting equipment to put the nuclear waste container into or take it out of the tank body, the guide sleeve can guide it to move in and out smoothly to avoid colliding with the inner wall of the tank body and causing damage.

[0014] As a further improvement of the above solution, the inner wall of the tank body is provided with a stainless steel neutron shielding layer cladding from the outside to the inside, including an enriched boron fluorine rubber neutron shielding layer and a tungsten nickel iron alloy shielding layer.

[0015] Through the above technical scheme, a neutron shielding layer containing enriched boron fluorine rubber, wherein enriched boron is used instead of the current natural boron, and the enriched boron has a larger neutron absorption cross section by selectively containing a higher proportion of isotopes, and thus absorbs neutrons more effectively than natural boron, thereby more efficiently reducing the radiation level of nuclear materials, and a tungsten-nickel-iron alloy shielding layer is used instead of the current lead shielding layer, and the density of the tungsten-nickel-iron alloy is higher than that of lead, which makes it have a larger mass in the same volume, thereby being able to provide a better shielding effect, especially for the shielding of gamma rays, and the tungsten-nickel-iron alloy has a higher radiation resistance and is not easily damaged by radiation, which can maintain the long-term stability of the shielding layer and avoid the degradation of the shielding layer performance due to radiation.

[0016] As a further improvement of the above solution, a second sealing cover is clamped on the other side of the inner wall of the tank.

[0017] Through the above technical solution, when the first sealing cover is damaged or fails, the second sealing cover can be used as a backup to provide additional safety protection and reduce the risk of nuclear waste leakage.

[0018] As a further improvement of the above solution, the bottom of the rear shock absorber is fixedly connected to a rear support seat, and round holes matching the holes are opened on both sides of the bottom of the rear support seat, and the other end of the reinforcement support rod is inserted into the inside of the round hole.

[0019] Through the above technical solution, the reinforcement support rod is inserted into the circular hole at the bottom of the rear support seat, which enhances the overall rigidity and bearing capacity of the structure and makes the device more sturdy.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The utility model strengthens the structural strength of the storage tank by arranging auxiliary components, reinforcing support rods and auxiliary cross bars. The laying of moisture-proof boards can effectively prevent ground moisture from entering the surface of the storage tank, thereby protecting the outer surface of the tank body from the erosion of water. In addition, since enriched boron has a larger neutron absorption cross-section, it absorbs neutrons more effectively than natural boron, thereby more efficiently reducing the radiation level of nuclear materials. Tungsten-nickel-iron alloy has a high radiation resistance and is not easily damaged by radiation, which can maintain the long-term stability of the shielding layer and avoid the degradation of the shielding layer performance due to radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a structural schematic diagram of the utility model hanging basket;

[0024] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the second sealing cover of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the auxiliary component of the utility model.

[0027] Description of main symbols:

[0028] 1. Front shock absorber; 2. Front support seat; 3. Auxiliary components; 301. Reinforcement support rod; 302. Auxiliary cross bar; 303. Positioning pin; 304. Extension block; 305. Moisture-proof plate; 4. First sealing cover; 5. Outer cover; 6. Tank body; 7. Rear shock absorber; 8. Hanging basket; 9. Guide sleeve; 10. Stainless steel neutron shielding layer cladding; 11. Neutron shielding layer containing enriched boron fluorine rubber; 12. Tungsten nickel iron alloy shielding layer; 13. Second sealing cover; 14. Rear support seat. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. Example

[0030] Please combine Figure 1-5 , an aluminum-based boron carbide nuclear waste storage tank of this embodiment includes a front shock absorber 1, a front support seat 2 is fixedly connected to the bottom of the front shock absorber 1, holes are opened on both sides of the bottom of the front support seat 2, auxiliary components 3 are arranged inside the holes, and a first sealing cover 4 is arranged on one side of the front shock absorber 1;

[0031] The auxiliary component 3 includes a reinforcing support rod 301, which is inserted into the inside of the hole. The surface of the reinforcing support rod 301 is fixedly connected with an auxiliary cross bar 302. Grooves are provided at both ends of the reinforcing support rod 301. Positioning pins 303 are provided inside the grooves. Extension blocks 304 are fixedly connected to both sides of the bottom of the front support seat 2. The bottom of the positioning pin 303 is inserted into the surface of the extension block 304. A moisture-proof plate 305 is provided on the upper surface of the auxiliary cross bar 302. The surface of the moisture-proof plate 305 is made of stainless steel. The reinforcing support rod 301 can increase the lateral support strength and improve the stability of the entire storage tank by being inserted into the hole. The auxiliary cross bar 302 increases the longitudinal support strength and further strengthens the structural strength of the storage tank. The design of the groove and the positioning pin 303 allows the positions of the reinforcing support rod 301 and the auxiliary cross bar 302 to be accurately adjusted and fixed, improving the flexibility and accuracy of assembly. The laying of the moisture-proof board 305 can effectively prevent ground moisture from entering the surface of the storage tank, thereby protecting the outer surface of the tank body 6 from moisture erosion, avoiding the problem of moisture damage on the outer surface of the tank body 6, and extending the service life of the storage tank. Moreover, since its surface material is stainless steel, it has good corrosion resistance and can maintain stability in harsh environments.

[0032] One side of the first sealing cover 4 is fixedly connected to an outer cover 5, and the surface of the outer cover 5 is fixedly connected to a tank body 6. The combination of the first sealing cover 4 and the outer cover 5 can form a double sealing effect, which helps to better isolate the external environment, reduce the risk of leakage, and improve overall safety.

[0033] One end of the tank body 6 is fixedly connected to a rear shock absorber 7, a hanging basket 8 is arranged on one side of the inner wall of the tank body 6, and shock absorbers are arranged at the front and rear to protect the tank body 6 from damage when impacted, thereby ensuring the safety of nuclear waste.

[0034] A guide sleeve 9 is provided inside the tank body 6. When a lifting device is used to put a nuclear waste container into or take it out of the tank body 6, the guide sleeve 9 can guide it to enter and exit smoothly to avoid collision with the inner wall of the tank body 6 and cause damage.

[0035] The inner wall of the tank body 6 is provided with a stainless steel neutron shielding layer cladding 10, an enriched boron fluorine rubber neutron shielding layer 11, and a tungsten-nickel-iron alloy shielding layer 12 in sequence from the outside to the inside. The enriched boron fluorine rubber neutron shielding layer 11 is enriched boron, which replaces the current natural boron. The enriched boron has a larger neutron absorption cross-section by selectively containing a higher proportion of isotopes, so it absorbs neutrons more effectively than natural boron, thereby more efficiently reducing the radiation level of nuclear materials. The tungsten-nickel-iron alloy shielding layer 12 replaces the current lead shielding layer. The density of tungsten-nickel-iron alloy is higher than that of lead, which makes it have a larger mass in the same volume, thereby providing better shielding effect, especially for the shielding of gamma rays. Tungsten-nickel-iron alloy has a higher radiation resistance and is not easily damaged by radiation, which can maintain the long-term stability of the shielding layer and avoid the degradation of the shielding layer performance due to radiation.

[0036] A second sealing cover 13 is clamped on the other side of the inner wall of the tank body 6. In the event that the first sealing cover 4 is damaged or fails, the second sealing cover 13 can serve as a backup to provide additional safety protection and reduce the risk of nuclear waste leakage.

[0037] The bottom of the rear shock absorber 7 is fixedly connected to the rear support seat 14. Round holes matching the holes are provided on both sides of the bottom of the rear support seat 14. The other end of the reinforcement support rod 301 is inserted into the inside of the round hole. The reinforcement support rod 301 is inserted into the round hole at the bottom of the rear support seat 14, which enhances the overall rigidity and load-bearing capacity of the structure and makes the device more sturdy.

[0038] The implementation principle of an aluminum-based boron carbide nuclear waste storage tank in the embodiment of the present application is as follows: the reinforcing support rod 301 can increase the lateral support strength and improve the stability of the entire storage tank by being inserted into the hole, and the auxiliary cross bar 302 increases the longitudinal support strength, further strengthening the structural strength of the storage tank. The design of the groove and the positioning pin 303 allows the positions of the reinforcing support rod 301 and the auxiliary cross bar 302 to be accurately adjusted and fixed, thereby improving the flexibility and accuracy of assembly. The laying of the moisture-proof plate 305 can effectively prevent ground moisture from entering the surface of the storage tank, thereby protecting the outer surface of the tank body 6 from moisture erosion, avoiding the problem of moisture damage to the outer surface of the tank body 6, and extending the service life of the storage tank. Moreover, since its surface material is stainless steel, it has very good It has good corrosion resistance and can maintain stability in harsh environments. It contains an enriched boron-fluororubber neutron shielding layer 11, which is enriched boron instead of the current natural boron. Enriched boron selectively contains a higher proportion of isotopes, and has a larger neutron absorption cross-section. Therefore, it absorbs neutrons more effectively than natural boron, thereby more efficiently reducing the radiation level of nuclear materials. The tungsten-nickel-iron alloy shielding layer 12 replaces the current lead shielding layer. The density of tungsten-nickel-iron alloy is higher than that of lead, which makes it have a larger mass in the same volume, thereby providing better shielding effect, especially for gamma ray shielding. Tungsten-nickel-iron alloy has a high radiation resistance and is not easily damaged by radiation, which can maintain the long-term stability of the shielding layer and avoid the degradation of the shielding layer performance due to radiation.

[0039] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An aluminum-based boron carbide nuclear waste storage tank, characterized in that: It comprises a front shock absorber (1), the bottom of the front shock absorber (1) is fixedly connected to a front support seat (2), both sides of the bottom of the front support seat (2) are provided with holes, the inside of the holes are provided with auxiliary components (3), and one side of the front shock absorber (1) is provided with a first sealing cover (4); The auxiliary component (3) comprises a reinforcing support rod (301), the reinforcing support rod (301) being inserted into the inside of the hole, the surface of the reinforcing support rod (301) being fixedly connected to an auxiliary cross bar (302), both ends of the reinforcing support rod (301) being provided with grooves, the inside of the grooves being provided with positioning pins (303), both sides of the bottom of the front support seat (2) being fixedly connected to extension blocks (304), the bottom of the positioning pin (303) being inserted into the surface of the extension block (304), and the upper surface of the auxiliary cross bar (302) being provided with a moisture-proof plate (305), the surface of the moisture-proof plate (305) being made of stainless steel.

2. The aluminum-based boron carbide nuclear waste storage tank according to claim 1, characterized in that: An outer cover (5) is fixedly connected to one side of the first sealing cover (4), and a tank body (6) is fixedly connected to the surface of the outer cover (5).

3. The aluminum-based boron carbide nuclear waste storage tank according to claim 2, characterized in that: One end of the tank body (6) is fixedly connected to a rear shock absorber (7), and a hanging basket (8) is provided on one side of the inner wall of the tank body (6).

4. The aluminum-based boron carbide nuclear waste storage tank according to claim 2, characterized in that: A guide sleeve (9) is arranged inside the tank body (6).

5. The aluminum-based boron carbide nuclear waste storage tank according to claim 2, characterized in that: The inner wall of the tank body (6) is provided with a stainless steel neutron shielding layer cladding (10), an enriched boron fluorine rubber neutron shielding layer (11), and a tungsten nickel iron alloy shielding layer (12) in sequence from the outside to the inside.

6. The aluminum-based boron carbide nuclear waste storage tank according to claim 2, characterized in that: A second sealing cover (13) is clamped on the other side of the inner wall of the tank body (6).

7. The aluminum-based boron carbide nuclear waste storage tank according to claim 3, characterized in that: The bottom of the rear shock absorber (7) is fixedly connected to a rear support seat (14), and circular holes matching the holes are provided on both sides of the bottom of the rear support seat (14), and the other end of the reinforcing support rod (301) is inserted into the inside of the circular hole.

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