Radioactive waste transfer trolley for nuclear power station

Abstract

The invention discloses a radioactive waste transfer trolley for a nuclear power station. The radioactive waste transfer trolley comprises a trolley body, a trolley body supporting assembly and a guide rail assembly. The vehicle body is of a hinge-free structure and comprises a vehicle body, a first opening and closing part and a second opening and closing part, the vehicle body, the first opening and closing part and the second opening and closing part jointly form a hollow rectangular structure and are tightly connected in a 45-degree meshing mode, sealing gaps are effectively reduced, meanwhile, a heat preservation layer is additionally arranged outside, and the shielding effect is improved. The vehicle body supporting assembly adopts a triangular bearing support and is fixed in a welding mode, and the structural stability is improved. A first advancing wheel and a second advancing wheel are arranged at the bottom to optimize the moving supporting performance of the vehicle body. The guide rail assembly comprises a first guide rail and a second guide rail, the first guide rail is provided with a limiting groove, and the first opening and closing part and the second opening and closing part can stably slide along the guide wheels to achieve accurate opening and closing. Shielding and transferring of radioactive wet waste are treated through hinge-free connection, leakage is greatly reduced, and meanwhile waste shielding treatment of the transfer trolley in a limited space is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of radiation protection applications, and particularly to a radioactive waste transfer vehicle for nuclear power plants. Background Art

[0002] As a high energy density and efficient energy form, nuclear energy plays an important role in optimizing the global energy structure and reducing carbon emissions. However, the utilization of nuclear energy also brings potential safety hazards, especially in the treatment and management of radioactive waste. How to minimize the impact of radioactive pollution on the environment and practitioners while promoting the development of nuclear energy technology has become an important research topic in the current nuclear industry.

[0003] Radioactive wet waste is liquid waste containing radionuclides generated during nuclear fuel production, reactor operation, and reprocessing. This type of waste is complex in variety and form, and is usually classified as low-level or medium-level radioactive waste. In the prior art, common treatment methods for radioactive wet waste include dilution or concentration followed by solidification treatment to reduce its activity and environmental impact. However, before treatment, these wastes need to be safely transported and collected to ensure the controllability and safety of the entire disposal process.

[0004] Existing radioactive waste transfer equipment still has many deficiencies in terms of sealing performance, stability, and operation convenience. For example, the sealing structure is prone to gaps, resulting in a risk of radiation leakage; the stability during the transfer process is insufficient, affecting operation safety; and some equipment is complex to operate, increasing the exposure risk of staff. Therefore, in order to minimize the leakage of radioactive waste, especially radioactive wet waste, and secondary radiation damage to technicians and the on-site environment during the transfer process, a new type of radioactive waste shielding transfer device is urgently needed to improve the safety, stability, and operation convenience of the transfer.

[0005] In view of the above problems, the present invention is specifically proposed. Summary of the Invention

[0006] The present invention discloses a radioactive waste transfer vehicle for nuclear power plants, aiming to solve the technical problems existing in the prior art.

[0007] The present invention provides a radioactive waste transfer vehicle for nuclear power plants, comprising: a vehicle body, a vehicle body support assembly, and a guide rail assembly;

[0008] The vehicle body includes a vehicle body main body, a first opening and closing part, and a second opening and closing part. The vehicle body main body, the first opening and closing part, and the second opening and closing part together form a hollow rectangular structure. The vehicle body main body is connected to the first opening and closing part and the second opening and closing part respectively without hinges, and the first opening and closing part and the second opening and closing part are opened or closed by moving.

[0009] The vehicle body support assembly is arranged below the vehicle body, and includes a load-bearing bracket, a third opening and closing portion, a fourth opening and closing portion, and at least two second forward wheels. The load-bearing bracket is triangular in shape. The third opening and closing portion and the fourth opening and closing portion are respectively fixed to the first opening and closing portion and the second opening and closing portion by welding. The second forward wheels are universal wheels, which are respectively arranged below the third opening and closing portion and the fourth opening and closing portion to provide support for the movement of the first opening and closing portion and the second opening and closing portion.

[0010] The guide rail assembly includes two first guide rails and two second guide rails, the two first guide rails are respectively arranged on both sides above the vehicle body, and the two second guide rails are arranged on two sides below the vehicle body support assembly, the first guide rails and the second guide rails are located in the same plane and are arranged in parallel; the first guide rail includes a limiting groove and a plurality of second guide wheels, the limiting groove is in the shape of a long hole, and the first opening and closing part and the second opening and closing part are respectively moved along the limiting groove by the plurality of second guide wheels; the length of the second guide rail is equal to the length of the limiting groove to provide the same movable distance as the limiting groove.

[0011] As a preferred technical solution, the first opening and closing part, the second opening and closing part and the vehicle body are connected without hinges in a 45° bite manner.

[0012] As a preferred technical solution, the first opening and closing portion and the second opening and closing portion are opened or closed by rotating to both sides.

[0013] As a preferred technical solution, the load-bearing bracket is welded to the vehicle body as one body.

[0014] As a preferred technical solution, positioning parts with long strip structures are respectively provided on both sides of the load-bearing bracket, and a plurality of evenly distributed first guide wheels are provided in the positioning parts.

[0015] As a preferred technical solution, the vehicle body support assembly also includes a plurality of first forward wheels, and the plurality of first forward wheels are arranged at the bottom of the load-bearing bracket.

[0016] As a preferred technical solution, a first universal ball wheel and a second universal ball wheel are provided inside the second guide rail, and the first universal ball wheel and the second universal ball wheel are arranged at both ends of the second guide rail.

[0017] As a preferred technical solution, the ball wheel surface of the first universal ball wheel contacts the lower bottom surface of the second guide rail; the ball wheel surface of the second universal ball wheel contacts the upper top surface of the second guide rail.

[0018] As a preferred technical solution, the vehicle body further includes a heat-insulating layer, which is respectively arranged on the outer surfaces of the vehicle body, the first opening and closing portion, and the second opening and closing portion.

[0019] As a preferred technical solution, handles are respectively provided on the outer surfaces of the first opening and closing portion and the second opening and closing portion.

[0020] The technical solution adopted by the present invention can achieve at least one of the following beneficial effects:

[0021] 1. The present invention adopts a first opening and closing part and a second opening and closing part without a hinge structure, and realizes a tight connection through a 45° biting method. At the same time, a heat preservation layer is arranged on the outer surface of the vehicle body. This design effectively reduces the sealing gaps that may be caused by traditional hinge connections, reduces the risk of radioactive waste leakage, improves the shielding effect and saves the use space, thereby effectively avoiding the secondary radiation damage caused by radioactive wet waste to technicians and the on-site environment.

[0022] 2. The vehicle body support assembly of the present invention adopts a triangular load-bearing bracket and is fixed to the vehicle body main body by welding, enhancing the stability of the overall structure. In addition, a plurality of first forward wheels are arranged at the bottom of the support assembly, and a first universal ball wheel and a second universal ball wheel are arranged inside the second guide rail, so that the vehicle body has better stability and controllability during the transfer process, thereby improving the safety and reliability of transportation.

[0023] 3. The present invention sets a first guide rail and a second guide rail, and designs a limit groove on the first guide rail, so that the first opening and closing part and the second opening and closing part can move smoothly along the guide wheels. In addition, the first universal ball wheel and the second universal ball wheel are respectively in contact with the upper and lower surfaces of the second guide rail, further optimizing the moving accuracy and smoothness of the vehicle body. Combined with the external handle design, it enables technicians to operate more conveniently and improves the loading and unloading efficiency of radioactive waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments. These drawings form a part of the present invention, and the schematic embodiments of the present invention and their explanations explain the present invention without unduly limiting the present invention. In the drawings:

[0025] Figure 1 is a schematic structural diagram of a radioactive waste transfer vehicle for a nuclear power plant according to the present invention;

[0026] Figure 2 is a schematic structural diagram of the vehicle body of the present invention;

[0027] Figure 3 is a schematic structural diagram of the vehicle body support assembly of the present invention;

[0028] Figure 4 is of the present invention Figure 1 enlarged structural diagram of A therein;

[0029] Figure 5 is a side view structural diagram of the first guide rail of the present invention

[0030] Figure 6Schematic side view structure of the second guide rail of the present invention.

[0031] Explanation of reference numerals:

[0032] 1. Vehicle body; 11. Vehicle body main body; 12. First opening and closing part; 13. Second opening and closing part; 14. Handle; 15. Vehicle body top assembly; 151. First top; 152. Second top; 153. Third top; 16. Heat preservation layer; 2. Vehicle body support assembly; 21. Load-bearing bracket; 22. Third opening and closing part; 23. Fourth opening and closing part; 24. Positioning part; 25. First forward wheel; 26. Connecting part; 27. First guide wheel; 28. Second forward wheel; 3. Guide rail assembly; 31. First guide rail; 311. Limit groove; 312. Second guide wheel; 32. Second guide rail; 321. First universal ball wheel; 322. Second universal ball wheel. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. In the description of the present invention, it should be noted that the term "or" is generally used in the sense of including "and / or", unless otherwise clearly specified in the content.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a magnetic connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0035] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0036] To solve the problems existing in the prior art, an embodiment of the present invention provides a radioactive waste transfer vehicle for a nuclear power plant, as Figures 1-5As shown, a barrel structure for transporting radioactive waste, especially a radioactive wet waste barrel, includes a vehicle body 1, a vehicle body support assembly 2, and a guide rail assembly 3. The vehicle body 1, as the main structure, is used to carry and transport radioactive waste to ensure the safety and stability during the transportation process. The vehicle body support assembly 2 is mainly used to support and fix the vehicle body 1 to keep it balanced during the transfer process and enhance the strength and durability of the overall structure. The guide rail assembly 3 is used for the moving path of the components of the vehicle body 1.

[0037] As Figure 1 and Figure 2 As shown, the vehicle body 1 includes a vehicle body main body 11, a first opening and closing part 12, a second opening and closing part 13, and a vehicle body top assembly 15. The vehicle body top assembly 15 includes a first top 151, a second top 152, and a third top 153. The first top 151 is arranged on and connected to the top of the vehicle body main body 11. The second top 152 and the third top 153 are respectively arranged on the tops of the first opening and closing part 12 and the second opening and closing part 13 and are respectively connected to them. Preferably, the vehicle body main body 11, the first opening and closing part 12, the second opening and closing part 13, and the vehicle body top assembly 15 are all made of stainless steel material, and a shielding material layer (not marked in the figure) is arranged on their outer sides. The shielding material layer is set as a cavity to fill with lead alloy, polyethylene, or other high-density protective materials, which is used to effectively shield radioactive radiation, prevent radiation leakage, ensure the safety protection of the surrounding environment and operators during the transportation process, and improve the safety and reliability of radioactive waste transfer. Preferably, the vehicle body main body 11, the first opening and closing part 12, and the second opening and closing part 13 together form a rectangular structure, and the center of the rectangular structure is a cylindrical hollow structure to improve the positioning and placement of the waste barrel during the post-treatment stage of the transfer vehicle. To meet the transfer requirements of the radioactive waste barrel and improve space utilization, the vehicle body main body 11 is respectively connected to the first opening and closing part 12 and the second opening and closing part 13 without hinges. Further preferably, the connection parts between the vehicle body main body 11 and the first opening and closing part 12 and the second opening and closing part 13 adopt a 45° bite method to avoid the existence of longitudinal through seams and improve the shielding function for radioactive waste. Further preferably, the first opening and closing part 12 and the second opening and closing part 13 can be rotated and opened to both sides.

[0038] As Figure 1 and Figure 3As shown, the vehicle body support assembly 2 is disposed below the vehicle body main body 11 and includes a load-bearing bracket 21, a third opening / closing part 22, a fourth opening / closing part 23, at least two first forward wheels 25, and at least two second forward wheels 28. Among them, the load-bearing bracket 21 is integrally welded to the vehicle body main body 11 by welding to provide structural support and ensure the stability and load-bearing capacity of the vehicle body; the third opening / closing part 22 and the fourth opening / closing part 23 are respectively fixed to the first opening / closing part 12 and the second opening / closing part 13 by welding to ensure the firmness and sealing of the opening / closing part. Preferably, the load-bearing bracket 21, as the main load-bearing part of the transporter, has a triangular structure to enhance the overall stability and load-bearing capacity, effectively disperse the stress generated during transportation, improve the adaptability of the transporter in complex environments, and ensure the safety and reliability of radioactive waste barrel transportation. Long strip-shaped positioning parts 24 are respectively arranged on both sides of the load-bearing bracket 21, and a plurality of first guide wheels 27 evenly distributed are arranged in the positioning parts 24 for positioning the transporter in a narrow space and post-treatment of radioactive waste. A plurality of first forward wheels 25 and a plurality of second forward wheels 28 are arranged at the bottom of the load-bearing bracket 21 to support and stabilize the movement of the transporter and make it run smoothly during transportation. Among them, the first forward wheels 25 are arranged below one side of the load-bearing bracket 21 far from the third opening / closing part 22 and the fourth opening / closing part 23 for the advancement of the transporter. Preferably, the number of the second forward wheels 28 is two, which are respectively arranged below the third opening / closing part 22 and the fourth opening / closing part 23. Preferably, the second forward wheels 28 are universal wheels, which can be steered while the transporter is advancing. The third opening / closing part 22 and the fourth opening / closing part 23 can respectively rotate to both sides driven by the first opening / closing part 12 and the second opening / closing part 13 to provide moving support when the first opening / closing part 12 and the second opening / closing part 13 rotate and open to both sides.

[0039] As Figure 1 , 3As shown in FIGS. 4 and 5, the guide rail assembly 3 includes two first guide rails 31 and two second guide rails 32. The two first guide rails 31 are both disposed above the vehicle body 1 and are respectively located above the sides where the vehicle body main body 11 is connected to the first opening and closing part 12 and the vehicle body main body 11 is connected to the second opening and closing part 13. The two second guide rails 32 are disposed on both sides below the vehicle body support assembly 2 and are arranged opposite to the two first guide rails 31. The first guide rails 31 and the second guide rails 32 are arranged in the same plane and are parallel to each other. The first guide rail 31 includes a limit groove 311 and a plurality of second guide wheels 312. The limit groove 311 is in the shape of a long hole and provides a distance range for the first opening and closing part 12 and the second opening and closing part 13 to move along the traveling direction of the vehicle body, so that the first opening and closing part 12 and the second opening and closing part 13 can slide along the first guide rail 31. The plurality of second guide wheels 312 are disposed inside the first guide rail 31 and cooperate with the limit groove 311 to prevent the first opening and closing part 12 and the second opening and closing part 13 from tilting when sliding along the first guide rail 31. Preferably, the plurality of second guide wheels 312 are respectively connected to the first opening and closing part 12 and the second opening and closing part 13 by welding, and there is a gap between the second guide wheels 312 and the top of the limit groove 311. The fixed shafts of the second guide wheels 312 near both ends of the limit groove 311 extend out of the surface of the limit groove 311. The above design can avoid dry friction between the first guide rail 31 and the first opening and closing part 12 and the second opening and closing part 13 on the one hand, and avoid derailment when the first opening and closing part 12 and the second opening and closing part 13 slide to the end of the first guide rail 31 on the other hand. Further preferably, the number of the second guide wheels 312 is 3-7. Further preferably, the length of the second guide rail 32 is equal to the length of the limit groove 311, so that when the first opening and closing part 12 and the second opening and closing part 13 are opened and closed, the first guide rail 31 and the second guide rail 32 provide the same moving distance. When the first opening and closing part 12 and the second opening and closing part 13 are opened, they first move away from the vehicle body main body 11 along the first guide rail 31 and then rotate and open to both sides. When the first opening and closing part 12 and the second opening and closing part 13 are closed, they are rotated and closed first and then move along the first guide rail 31 until they contact the vehicle body main body 11. As Figure 5As shown, a first universal ball wheel 321 and a second universal ball wheel 322 are disposed inside the second guide rail 32. The first universal ball wheel 321 and the second universal ball wheel 322 are respectively disposed at two ends of the second guide rail 32 and are disposed opposite to each other to achieve the sliding and steering support function of the first opening and closing part 12 and the second opening and closing part 13 in the second guide rail 32. Preferably, the upper end of the first universal ball wheel 321 is fixed below the third opening and closing part 23 and the fourth opening and closing part 24, and the ball wheel surface of the first universal ball wheel 321 contacts the bottom surface of the second guide rail 32 to realize the function of the third opening and closing part 23 and the fourth opening and closing part 24 sliding and rotating in the second guide rail 32; the second universal ball wheel 322 is fixed to the end of the second guide rail 32, and the ball wheel surface contacts the upper top surface of the second guide rail 32. On the one hand, it can effectively support the vehicle body 1, and on the other hand, it can serve as the end limit of the first opening and closing part 12 and the second opening and closing part 13, thereby avoiding derailment of the first opening and closing part 12 and the second opening and closing part 13 after sliding to the end of the second guide rail 32.

[0040] Through the above structural design, based on the modular design of the vehicle body 1, the vehicle body support assembly 2 and the guide rail assembly 3, the safety and stability of the radioactive waste transportation process are ensured. The vehicle body 1 is made of stainless steel, and a shielding material layer is provided on its outer side, which has an effective radiation shielding function, and the vehicle body 11 is connected with the first opening and closing part 12 and the second opening and closing part 13 by a hingeless 45° bite connection method. The first opening and closing part 12 and the second opening and closing part 13 can be opened and closed, thereby improving the structural sealing and preventing radiation leakage. The vehicle body support assembly 2 adopts a triangular load-bearing bracket 21 to enhance the overall stability, and combines the first forward wheel 25, the second forward wheel 28 and the first guide wheel 27 to adapt to complex transportation environments. The guide rail assembly 3 realizes the smooth sliding of the vehicle body opening and closing part through the first guide rail 31, the second guide rail 32 and the limit groove 311 and the second guide wheel 312, and provides steering support through two universal ball wheels 321 and 322 to improve the convenience of operation. This design optimizes the positioning and storage of radioactive waste barrels, improves space utilization and transportation safety, and has good practical value and promotion prospects.

[0041] In some preferred embodiments, Figure 1 As shown, the vehicle body is also provided with two handles 14, which are respectively arranged on the outer surfaces of the first opening and closing part 12 and the second opening and closing part 13, for conveniently controlling the opening and closing of the first opening and closing part 12 and the second opening and closing part 13, thereby facilitating the loading and removal of the radioactive wet waste barrels carrying radioactive waste.

[0042] In some preferred embodiments, Figure 2As shown, the vehicle body further includes a thermal insulation layer 16. The outer surfaces of the vehicle body main body 1, the first opening and closing part 12, and the second opening and closing part 13 are all provided with the thermal insulation layer 16, which is used to reduce heat exchange and maintain the internal temperature stability, thereby improving the adaptability of the transporter under different environmental conditions, ensuring effective thermal insulation protection for radioactive waste during transportation, reducing the influence of the external environment on the waste temperature, and improving the safety of transportation. Preferably, the thermal insulation layer 16 is filled with aluminosilicate wool, which can effectively prevent the influence of the radioactive waste barrel on external devices and the environment during the post-treatment process.

[0043] In some preferred embodiments, such as Figure 3 As shown, the vehicle body support assembly 2 further includes a connecting part 26, which is used to connect the vehicle body 1 and the vehicle body support assembly 2 and provide support for the vehicle body 1.

[0044] The working principle of this transporter is as follows: During the treatment of radioactive waste, especially during the treatment of radioactive wet waste, the first opening and closing part 12 and the second opening and closing part 13 are slid along the tracks of the first guide rail 31 and the second guide rail 32 through the handle 14. When the first opening and closing part 12 and the second opening and closing part 13 slide to the second universal ball 322, the first opening and closing part 12 and the second opening and closing part 13 are rotated and opened to both sides by using the handle 14. At this time, the barrel containing radioactive waste is loaded into the hollow structure of the vehicle body 1, and then the first opening and closing part 12 and the second opening and closing part 13 are rotated and closed towards each other, and slide along the tracks of the first guide rail 31 and the second guide rail 32 to be connected to the vehicle body main body 11.

[0045] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the claims of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A radioactive waste transfer vehicle for nuclear power plants, characterized in that, Including: A vehicle body, a vehicle body support assembly, and a guide rail assembly; The vehicle body includes a vehicle body main body, a first opening / closing part, and a second opening / closing part. The vehicle body main body, the first opening / closing part, and the second opening / closing part together form a hollow rectangular structure. The vehicle body main body is connected to the first opening / closing part and the second opening / closing part respectively without hinges. The first opening / closing part and the second opening / closing part are opened or closed by moving; The vehicle body support assembly is arranged below the vehicle body and includes a load-bearing bracket, a third opening / closing part, a fourth opening / closing part, and at least two second forward wheels. The load-bearing bracket is triangular. The third opening / closing part and the fourth opening / closing part are fixed to the first opening / closing part and the second opening / closing part respectively by welding. The second forward wheels are universal wheels and are respectively arranged below the third opening / closing part and the fourth opening / closing part to provide support for the movement of the first opening / closing part and the second opening / closing part; The guide rail assembly includes two first guide rails and two second guide rails. The two first guide rails are respectively arranged on both sides above the vehicle body. The two second guide rails are arranged below the vehicle body support assembly. The first guide rails and the second guide rails are located in the same plane and are arranged in parallel. The first guide rail includes a limiting groove and a plurality of second guide wheels. The limiting groove is in the shape of a long hole. The first opening / closing part and the second opening / closing part respectively move along the limiting groove through the plurality of second guide wheels. The length of the second guide rail is equal to the length of the limiting groove to provide the same movable distance as the limiting groove.

2. The radioactive waste transfer vehicle according to claim 1, wherein The first opening / closing part and the second opening / closing part are connected to the vehicle body main body without hinges in a 45° biting manner.

3. The radioactive waste transporter according to claim 1, wherein, The first opening / closing part and the second opening / closing part are opened or closed by rotating to both sides.

4. The radioactive waste transporter according to claim 1, characterized in that, The load-bearing bracket is welded to the vehicle body main body as a whole.

5. The radioactive waste transporter according to claim 4, characterized in that, Long strip-shaped positioning parts are respectively arranged on both sides of the load-bearing bracket, and a plurality of first guide wheels evenly distributed are arranged inside the positioning parts.

6. The radioactive waste transfer vehicle according to claim 1, characterized in that, The vehicle body support assembly further includes a plurality of first forward wheels, and the plurality of first forward wheels are arranged at the bottom of the load-bearing bracket.

7. The radioactive waste transporter according to claim 1, wherein The inside of the second guide rail is provided with a first universal ball wheel and a second universal ball wheel, and the first universal ball wheel and the second universal ball wheel are arranged at both ends of the second guide rail.

8. The radioactive waste transporter according to claim 7, wherein, The ball surface of the first universal ball wheel is in contact with the bottom surface below the second guide rail; the ball surface of the second universal ball wheel is in contact with the top surface above the second guide rail.

9. The radioactive waste transporter according to any one of claims 1-8, characterized in that, The vehicle body further includes a heat preservation layer, which is respectively arranged on the outer surfaces of the vehicle body main body, the first opening / closing part, and the second opening / closing part.

10. The radioactive waste transporter according to claim 9, characterized in that, Handles are respectively arranged on the outer surfaces of the first opening / closing part and the second opening / closing part.

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