A new type of low-level radioactive waste liquid temporary storage container

Abstract

The utility model discloses a novel low level radioactive waste liquid temporary storage container, solve the prior art lead material because its biological toxicity and the unfriendly nature to the environment lead to the technical problem of being restricted in the additional shielding device. The utility model discloses a radioactive waste liquid temporary storage tank body, the flexible shielding body for radiation protection is set up for the radiation protection around radioactive waste liquid temporary storage tank body, and the protective shell for fixed is set up around the flexible shielding body, and the flexible shielding body adopts the tungsten rubber that contains. The utility model adopts three layer structure design to the wall of the utility model, and is inside layer radioactive waste liquid temporary storage tank body, middle layer flexible shielding body and outer layer protective shell respectively. The inner layer stores waste liquid, and the middle layer protects radiation, and the outer layer fixes and protects the flexible shielding body, and the utility model product structure design is compact, and the appearance is exquisite, and the space utilization is high, and the working condition environment adaptability is stronger, and convenient transportation.

Description

Technical Field

[0001] This utility model belongs to the field of radiation protection technology, specifically relating to a novel temporary storage container for low- to medium-level radioactive waste liquid. Background Technology

[0002] The nuclear industry generates radioactive waste liquids. Untreated radioactive waste liquids and concentrates must be stored in dedicated containers at fixed locations. During storage, leakage must be prevented to ensure environmental safety. In nuclear industry production, low-to-medium level radioactive waste liquids (radioactivity concentration ≤ 4 × 10⁻⁶) are handled differently. 10 (Bq / L) is generally stored in temporary storage containers.

[0003] The raw materials used to manufacture temporary storage containers for low- and intermediate-level radioactive waste are typically high-strength, corrosion-resistant special alloys or stainless steel to ensure their stability and safety under high pressure, high temperature, and corrosive environments. For radioactive waste exceeding the minimum dose rate limit, external shielding devices are required to improve safety. External shielding devices typically employ an outer lead-containing metal layer or an external lead-containing metal partition; however, lead-containing external shielding structures have the following shortcomings: 1. Lead-containing materials: Lead has biological toxicity and is environmentally unfriendly, so its use is restricted.

[0004] 2. Market orientation: For radiation protection optimization items at nuclear power plant sites, such as hotspot / heat pipe shielding optimization items and shielding optimization items for temporary storage containers for low-to-medium level radioactive waste, lead-free products are increasingly favored by customers.

[0005] 3. External lead-containing metal partitions: This type of split structure lacks aesthetic simplicity, space utilization, adaptability to working conditions, and ease of transport. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a novel temporary storage container for low-to-medium level radioactive waste liquid, thereby solving the technical problem that the use of lead-containing materials in external shielding devices is limited due to their biological toxicity and environmental unfriendliness.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel medium- and low-level radioactive waste liquid temporary storage container includes a radioactive waste liquid temporary storage tank, a flexible shielding body for radiation protection surrounding the outer periphery of the radioactive waste liquid temporary storage tank, and a protective outer shell for fixation surrounding the outer periphery of the flexible shielding body; the flexible shielding body is made of tungsten-containing rubber.

[0008] Furthermore, the radioactive waste storage tank includes two cylindrical arc-shaped plates and two end-cap arc-shaped plates. The two cylindrical arc-shaped plates are joined together to form a tank cylinder, and the two end-cap arc-shaped plates are respectively sealed at both ends of the tank cylinder.

[0009] Furthermore, the outer edges of the arc-shaped plate of the tank cylinder and the arc-shaped plate of the end cap are bent to form connecting wing plates. The two arc-shaped plates of the tank cylinder and the arc-shaped plate of the end cap are connected to each other through the connecting wing plates, and the connecting wing plates are fixedly connected by bolts.

[0010] Furthermore, the flexible shielding body includes several arc-shaped flexible shielding body blocks encapsulated on the outer wall of the arc-shaped plate of the tank, and a head flexible shielding body encapsulated on the outer wall of the arc-shaped plate of the head; the head flexible shielding body includes several head flexible shielding body blocks encapsulated on the outer wall of the arc-shaped plate of the head, and a head end flexible shielding body block encapsulated in the center of the outer wall of the arc-shaped plate of the head.

[0011] Furthermore, the joints between the arc-shaped flexible shielding block, the end cap flexible shielding block, and the end cap flexible shielding block are joined using a beveled angle connection.

[0012] Furthermore, the tank is equipped with a liquid inlet and a vent.

[0013] Furthermore, the protective housing is provided with a protective housing inlet corresponding to the liquid inlet, and the protective housing inlet is provided with a cover plate; the protective housing is provided with a protective housing exhaust pipe connected to the exhaust port.

[0014] Furthermore, it also includes a support base on the protective shell, and a reinforcing plate is installed between the protective shell and the support base.

[0015] Furthermore, the protective casing is equipped with lifting lugs and a ladder, and the protective casing is made of S304 stainless steel.

[0016] Furthermore, the temporary storage tank for radioactive waste liquid is made of S304 stainless steel.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This utility model features a simple structure, scientific and reasonable design, and convenient use. The container for temporary storage of low-to-medium level radioactive waste employs a three-layer structure. The innermost layer, made of S304 stainless steel, forms the main body of the container and provides storage for low-to-medium level radioactive waste. The middle layer, made of tungsten-containing rubber, serves as a flexible shielding body, providing radiation protection and achieving lead-free radiation protection. Its thickness can be adjusted during manufacturing according to performance requirements. The seams of the flexible shielding body utilize a beveled joint structure to effectively prevent radiation leakage. The outermost layer, also made of S304 stainless steel, forms a protective shell, providing fixation and protection for the flexible shielding body. This utility model boasts a compact design, elegant appearance, high space utilization, strong adaptability to various working environments, and convenient transportation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the radioactive waste liquid temporary storage tank of this utility model.

[0020] Figure 3 This is a schematic diagram of the flexible shielding body of this utility model.

[0021] Figure 4 This is a schematic diagram of the arc-shaped flexible shielding block of this utility model.

[0022] Figure 5 This is a schematic diagram of the flexible shielding block for the end cap of this utility model.

[0023] Figure 6 This is a schematic diagram of the flexible shielding block at the end of the end cap of this utility model.

[0024] Figure 7 This is a schematic diagram of the sealing plate of this utility model.

[0025] Figure 8 This is a schematic diagram of the sealing strip on the arc-shaped plate of the tank cylinder or the arc-shaped plate of the end cap of this utility model.

[0026] Figure 9 This is a schematic diagram of the groove embedded in the arc-shaped plate of the tank cylinder or the arc-shaped plate of the end cap of this utility model.

[0027] Figure 10 This is a cross-sectional view of the sealing strip of this utility model.

[0028] The names corresponding to the reference numerals in the attached figures are as follows: 1-Temporary storage tank for radioactive waste liquid; 2-Flexible shield; 3-Protective shell; 4-Support base; 5-Reinforcing plate; 6-Sealing strip; 7-Insertion groove; 11-Arched plate of the tank cylinder; 12-Arched plate of the end cap; 13-Tank cylinder; 14-Connecting wing plate; 15-Liquid inlet; 16-Exhaust port; 21-Arched flexible shield block; 22-Flexible shield block of the end cap; 23-Flexible shield block at the end of the end cap; 31-Lifting lug; 32-Ladder; 33-Liquid inlet of the protective shell; 34-Cover plate; 35-Exhaust pipe of the protective shell; 36-Plug; 61-Insertion; 62-Sealing body. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] The tungsten-containing rubber described in this utility model is existing technology. The tungsten-containing rubber described in the embodiments of this invention is a flexible material for radiation-resistant, lead-free radiation shielding, as described in CN111849175 A.

[0031] Example 1.

[0032] like Figures 1-10 As shown, this utility model provides a novel medium- and low-level radioactive waste liquid temporary storage container, including a radioactive waste liquid temporary storage tank 1, a flexible shield 2 for radiation protection arranged around the outer periphery of the radioactive waste liquid temporary storage tank 1, and a protective shell 3 for fixing arranged around the outer periphery of the flexible shield 2; the flexible shield 2 is made of tungsten-containing rubber.

[0033] This utility model features a simple structure, scientific and reasonable design, and convenient use. The container for temporary storage of low-to-medium level radioactive waste employs a three-layer structure. The innermost layer, made of S304 stainless steel, forms the main body of the container and provides storage for low-to-medium level radioactive waste. The middle layer, made of tungsten-containing rubber, serves as a flexible shielding body, providing radiation protection and achieving lead-free radiation protection. Its thickness can be adjusted during manufacturing according to performance requirements. The seams of the flexible shielding body utilize a beveled joint structure to effectively prevent radiation leakage. The outermost layer, also made of S304 stainless steel, forms a protective shell, providing fixation and protection for the flexible shielding body. This utility model boasts a compact design, elegant appearance, high space utilization, strong adaptability to various working environments, and convenient transportation.

[0034] The tungsten-containing rubber used in this invention is an existing rubber product that can shield against low- to medium-level radioactive waste liquid radiation.

[0035] Example 2.

[0036] like Figures 1-10 As shown, this utility model provides a novel medium- and low-level radioactive waste liquid temporary storage container, including a radioactive waste liquid temporary storage tank 1, a flexible shield 2 for radiation protection arranged around the outer periphery of the radioactive waste liquid temporary storage tank 1, and a protective shell 3 for fixing arranged around the outer periphery of the flexible shield 2; the flexible shield 2 is made of tungsten-containing rubber.

[0037] The radioactive waste storage tank 1 includes two cylindrical arc plates 11 and two end-cap arc plates 12. The two cylindrical arc plates 11 are joined together to form a tank 13, and the two end-cap arc plates 12 are respectively sealed at both ends of the tank 13.

[0038] Based on Example 1, this embodiment 2 provides a more preferred structure for the radioactive waste storage tank 1. Specifically, the radioactive waste storage tank 1 includes two cylindrical arc-shaped plates 11 and two end-cap arc-shaped plates 12. The two cylindrical arc-shaped plates 11 are joined together to form a tank cylinder 13, and the two end-cap arc-shaped plates 12 are respectively sealed at both ends of the tank cylinder 13. The structure is simple and easy to manufacture.

[0039] Example 3.

[0040] like Figures 1-10 As shown, this utility model provides a novel medium- and low-level radioactive waste liquid temporary storage container, including a radioactive waste liquid temporary storage tank 1, a flexible shield 2 for radiation protection arranged around the outer periphery of the radioactive waste liquid temporary storage tank 1, and a protective shell 3 for fixing arranged around the outer periphery of the flexible shield 2; the flexible shield 2 is made of tungsten-containing rubber.

[0041] The radioactive waste storage tank 1 includes two cylindrical arc plates 11 and two end-cap arc plates 12. The two cylindrical arc plates 11 are joined together to form a tank 13, and the two end-cap arc plates 12 are respectively sealed at both ends of the tank 13.

[0042] The outer edges of the tubular arc plate 11 and the outer edges of the end cap arc plate 12 are bent to form connecting wing plates 14. The two tubular arc plates 11 and the tubular arc plate 11 and the end cap arc plate 12 are connected to each other through the connecting wing plates 14, and the connected wing plates 14 are fixedly connected by bolts.

[0043] Based on Example 2, this embodiment 3 provides a more preferred structure for the radioactive waste storage tank 1. Specifically, the outer edges of the arc-shaped plate 11 of the tank cylinder and the outer edges of the arc-shaped plate 12 of the end cap are bent to form connecting wing plates 14. The two arc-shaped plates 11 of the tank cylinder and the arc-shaped plate 11 of the tank cylinder and the arc-shaped plate 12 of the end cap are connected to each other through the connecting wing plates 14. The connecting wing plates 14 are fixedly connected by bolts.

[0044] To ensure the sealing performance of the radioactive waste storage tank 1, sealing strips 6 are sealed between the two arc-shaped plates 11 of the tank cylinder and between the arc-shaped plate 11 of the tank cylinder and the arc-shaped plate 12 of the end cap. Specifically, an insert groove 7 is provided between the two arc-shaped plates 11 of the tank cylinder and between the arc-shaped plate 11 of the tank cylinder and the arc-shaped plate 12 of the end cap. The insert groove is a dovetail groove. The sealing strip includes an insert 61 that is adapted to the dovetail groove and a sealing body 62 integrally formed with the insert. The insert is installed in the insert groove, and the sealing body is sealed and fitted to the adjacent arc-shaped plate 11 of the tank cylinder or the arc-shaped plate 12 of the end cap.

[0045] Example 4.

[0046] like Figures 1-10 As shown, this utility model provides a novel medium- and low-level radioactive waste liquid temporary storage container, including a radioactive waste liquid temporary storage tank 1, a flexible shield 2 for radiation protection arranged around the outer periphery of the radioactive waste liquid temporary storage tank 1, and a protective shell 3 for fixing arranged around the outer periphery of the flexible shield 2; the flexible shield 2 is made of tungsten-containing rubber.

[0047] The radioactive waste storage tank 1 includes two cylindrical arc plates 11 and two end-cap arc plates 12. The two cylindrical arc plates 11 are joined together to form a tank 13, and the two end-cap arc plates 12 are respectively sealed at both ends of the tank 13.

[0048] The flexible shield 2 includes several arc-shaped flexible shield blocks 21 encapsulated on the outer wall of the arc-shaped plate 11 of the tank, and a head flexible shield encapsulated on the outer wall of the arc-shaped plate 12 of the head; the head flexible shield includes several head flexible shield blocks 22 encapsulated on the outer wall of the arc-shaped plate 12 of the head, and a head end flexible shield block 23 encapsulated at the center of the outer wall of the arc-shaped plate 12 of the head. The arc-shaped flexible shield blocks 21, the head flexible shield blocks 22, and the head end flexible shield blocks 23 are joined together at a bevel angle.

[0049] Based on Example 2, this embodiment 4 presents a more preferred structure for the flexible shield 2. The flexible shield 2 has a simple structure and is easy to manufacture. It is made of tungsten-containing rubber material, providing radiation protection and achieving lead-free radiation protection. The thickness can be adjusted during manufacturing according to the required protection performance. The seams of the flexible shield use a beveled joint structure, which effectively prevents radiation leakage.

[0050] Example 5.

[0051] like Figures 1-10 As shown, this utility model provides a novel medium- and low-level radioactive waste liquid temporary storage container, including a radioactive waste liquid temporary storage tank 1, a flexible shield 2 for radiation protection arranged around the outer periphery of the radioactive waste liquid temporary storage tank 1, and a protective shell 3 for fixing arranged around the outer periphery of the flexible shield 2; the flexible shield 2 is made of tungsten-containing rubber.

[0052] The radioactive waste storage tank 1 includes two cylindrical arc plates 11 and two end-cap arc plates 12. The two cylindrical arc plates 11 are joined together to form a tank 13, and the two end-cap arc plates 12 are respectively sealed at both ends of the tank 13.

[0053] The tank 13 is provided with a liquid inlet 15 and a vent 16.

[0054] Based on Example 2, this embodiment 5 provides a more preferred structure for the radioactive waste storage tank 1, specifically: the tank cylinder 13 is provided with an inlet 15 and an exhaust port 16. The inlet 15 facilitates the filling of low-to-medium level radioactive waste into the radioactive waste storage tank 1, and the exhaust port 16 facilitates the venting of air from the radioactive waste storage tank 1. The exhaust port 16 includes at least Ø20, Ø32, Ø50, and Ø80 exhaust ports, with two of each of the Ø20, Ø50, and Ø80 exhaust ports, and the six exhaust ports are arranged in a straight line at the top of the tank cylinder 13. There are four Ø32 exhaust ports, two of which are distributed on each of the end cap arc plates 12.

[0055] Example 6.

[0056] like Figures 1-10 As shown, this utility model provides a novel medium- and low-level radioactive waste liquid temporary storage container, including a radioactive waste liquid temporary storage tank 1, a flexible shield 2 for radiation protection arranged around the outer periphery of the radioactive waste liquid temporary storage tank 1, and a protective shell 3 for fixing arranged around the outer periphery of the flexible shield 2; the flexible shield 2 is made of tungsten-containing rubber.

[0057] The radioactive waste storage tank 1 includes two cylindrical arc plates 11 and two end-cap arc plates 12. The two cylindrical arc plates 11 are joined together to form a tank 13, and the two end-cap arc plates 12 are respectively sealed at both ends of the tank 13.

[0058] The tank 13 is provided with a liquid inlet 15 and a vent 16.

[0059] The protective housing 3 is provided with a protective housing inlet 33 corresponding to the liquid inlet 15, and a cover plate 34 is provided on the protective housing inlet 33; the protective housing 3 is provided with a protective housing exhaust pipe 35 connected to the exhaust port 16.

[0060] Based on Embodiment 5, this embodiment 6 provides a more preferred structure for the protective housing 3, specifically: the protective housing 3 has a protective housing inlet 33 corresponding to the liquid inlet 15, and a cover plate 34 is provided on the protective housing inlet 33; the protective housing 3 has a protective housing exhaust pipe 35 connected to the exhaust port 16. The cover plate 34 can effectively seal the liquid inlet 15. The inner wall of the cover plate 34 is provided with a plug 36 made of tungsten rubber, and when the cover plate 34 is installed on the protective housing inlet 33, the plug 36 is sealed inside the liquid inlet 15. The protective housing exhaust pipe 35 includes at least three layers, namely an inner layer of S304 stainless steel, a middle layer of tungsten rubber shielding, and an outer layer of S304 stainless steel. The inner diameter of the protective housing exhaust pipe 35 is consistent with the diameter of the exhaust port 16.

[0061] Example 7.

[0062] like Figures 1-10 As shown, this utility model provides a novel medium- and low-level radioactive waste liquid temporary storage container, including a radioactive waste liquid temporary storage tank 1, a flexible shield 2 for radiation protection arranged around the outer periphery of the radioactive waste liquid temporary storage tank 1, and a protective shell 3 for fixing arranged around the outer periphery of the flexible shield 2; the flexible shield 2 is made of tungsten-containing rubber.

[0063] It also includes a support base 4 on the protective shell 3, and a reinforcing plate 5 is installed between the protective shell 3 and the support base 4.

[0064] Support base 4 facilitates the placement of temporary storage containers for low- to medium-level radioactive waste liquids and is highly adaptable to working conditions and environments.

[0065] Example 8.

[0066] like Figures 1-10 As shown, this utility model provides a novel medium- and low-level radioactive waste liquid temporary storage container, including a radioactive waste liquid temporary storage tank 1, a flexible shield 2 for radiation protection arranged around the outer periphery of the radioactive waste liquid temporary storage tank 1, and a protective shell 3 for fixing arranged around the outer periphery of the flexible shield 2; the flexible shield 2 is made of tungsten-containing rubber.

[0067] The protective outer shell 3 is equipped with lifting lugs 31 and a ladder 32, and the protective outer shell 3 is made of S304 stainless steel. The radioactive waste liquid temporary storage tank 1 is made of S304 stainless steel.

[0068] The ladder 32 is easy to use, and the lifting lug 31 facilitates transportation. The protective shell 3 is made of common and readily available materials.

[0069] This utility model features a simple structure, scientific and reasonable design, and convenient use. The container for temporary storage of low-to-medium level radioactive waste employs a three-layer structure. The innermost layer, made of S304 stainless steel, forms the main body of the container and provides storage for low-to-medium level radioactive waste. The middle layer, made of tungsten-containing rubber, serves as a flexible shielding body, providing radiation protection and achieving lead-free radiation protection. Its thickness can be adjusted during manufacturing according to performance requirements. The seams of the flexible shielding body utilize a beveled joint structure to effectively prevent radiation leakage. The outermost layer, also made of S304 stainless steel, forms a protective shell, providing fixation and protection for the flexible shielding body. This utility model boasts a compact design, elegant appearance, high space utilization, strong adaptability to various working environments, and convenient transportation.

[0070] This utility model's low-to-medium level radioactive waste liquid temporary storage container consists of three parts: the container body, the radiation protection functional layer, and the stainless steel shell. Product specifications can be customized according to customer needs.

[0071] This utility model provides a temporary storage container for low- and medium-level radioactive waste liquid. It uses tungsten-containing rubber to shield radiation and can meet the requirements for lead-free production.

[0072] Traditional external lead-containing metal partitions typically include movable or fixed rigid lead-containing screens or partitions (rigid generally refers to inner and outer stainless steel cladding with a pure lead core) and movable or fixed flexible lead-containing screens or partitions (flexible generally refers to a flexible blanket made of lead rubber hung on an external fixed bracket or directly on a hook on the tank). These are separate structures from the storage tank. Compared to external lead-containing metal partitions, this utility model's low-level radioactive waste temporary storage container features an integrated design of storage and shielding functions, a compact structure, an attractive appearance, high space utilization, and strong adaptability to various working environments.

[0073] Finally, it should be noted that the above embodiments are merely preferred embodiments used to illustrate the technical solution of this utility model, and are not intended to limit it, much less limit the patent scope of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but which still solve the same technical problem as this utility model, should be included within the protection scope of this utility model; in addition, the direct or indirect application of the technical solution of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A novel container for the temporary storage of low- to medium-level radioactive waste liquid, characterized in that, It includes a radioactive waste liquid storage tank (1), a flexible shield (2) for radiation protection surrounding the radioactive waste liquid storage tank (1), and a protective shell (3) for fixing surrounding the flexible shield (2); the flexible shield (2) is made of tungsten rubber.

2. The novel medium- and low-level radioactive waste liquid temporary storage container according to claim 1, characterized in that, The radioactive waste storage tank (1) includes two cylindrical arc plates (11) and two end-cap arc plates (12). The two cylindrical arc plates (11) are joined together to form a tank (13), and the two end-cap arc plates (12) are respectively sealed at both ends of the tank (13).

3. A novel temporary storage container for low-to-medium level radioactive waste liquid according to claim 2, characterized in that, The outer edges of the tub arc plate (11) and the outer edges of the end cap arc plate (12) are bent to form connecting wing plates (14). The two tub arc plates (11) and the tub arc plate (11) and the end cap arc plate (12) are connected by connecting wing plates (14), and the connected wing plates (14) are fixedly connected by bolts.

4. A novel temporary storage container for low-to-medium level radioactive waste liquid according to claim 2, characterized in that, The flexible shield (2) includes several arc-shaped flexible shield blocks (21) encapsulated on the outer wall of the arc-shaped plate (11) of the tank, and a head flexible shield encapsulated on the outer wall of the arc-shaped plate (12) of the head; the head flexible shield includes several head flexible shield blocks (22) encapsulated on the outer wall of the arc-shaped plate (12) of the head, and a head end flexible shield block (23) encapsulated in the center of the outer wall of the arc-shaped plate (12) of the head.

5. A novel temporary storage container for low-to-medium level radioactive waste liquid according to claim 4, characterized in that, The curved flexible shielding block (21), the end cap flexible shielding block (22), and the end cap flexible shielding block (23) are joined together by a beveled angle.

6. A novel temporary storage container for low-to-medium level radioactive waste liquid according to claim 2, characterized in that, The tank (13) is provided with a liquid inlet (15) and a vent (16).

7. A novel temporary storage container for low-to-medium level radioactive waste liquid according to claim 6, characterized in that, The protective shell (3) is provided with a protective shell inlet (33) corresponding to the liquid inlet (15), and a cover plate (34) is provided on the protective shell inlet (33); the protective shell (3) is provided with a protective shell exhaust pipe (35) connected to the exhaust port (16).

8. A novel temporary storage container for low-to-medium level radioactive waste liquid according to claim 1, characterized in that, It also includes a support base (4) on the protective shell (3), and a reinforcing plate (5) is installed between the protective shell (3) and the support base (4).

9. A novel temporary storage container for low-to-medium level radioactive waste liquid according to claim 1, characterized in that, The protective shell (3) is equipped with a lifting lug (31) and a ladder (32), and the protective shell (3) is made of S304 stainless steel.

10. A novel temporary storage container for low-to-medium level radioactive waste liquid according to claim 1, characterized in that, The radioactive waste storage tank (1) is made of S304 stainless steel.

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