Device suitable for isotope separation and sealing structure thereof

Abstract

The invention discloses a device suitable for isotope separation and a sealing structure thereof, and relates to the field of isotope separation.The device comprises a supporting table and an ion acceleration pipeline fixedly installed at the top end of the supporting table, one end of the ion acceleration pipeline is communicated with an ion source, and the outer side of the ion acceleration pipeline is sleeved with a spiral cooling pipe in the length direction; one end of the spiral cooling pipe is connected with a pump body, the pump body is connected with a heat exchange pipe, and a cooling circulation system composed of the spiral cooling pipe, the pump body, the heat exchange pipe and the cooling water tank can rapidly take away heat generated during operation of the ion acceleration pipeline, the heat dissipation efficiency is higher, and when the first moving seat and the second moving seat move in the length direction of the spiral cooling pipe, the heat dissipation efficiency is higher. Wind power generated by the fan is evenly blown to the ion acceleration pipeline and the spiral cooling pipe through the exhaust port, auxiliary cooling of the ion acceleration pipeline is achieved, and meanwhile it can be prevented that condensate water is generated on the surface of the spiral cooling pipe due to too low temperature.

Description

Technical Field

[0001] This invention relates to the field of isotope separation, and in particular to a device suitable for isotope separation and its sealing structure. Background Technology

[0002] Isotope separation refers to the process of separating different isotopes of the same element. These isotopes have the same atomic number but different numbers of neutrons, and therefore different atomic weights. The principle of isotope separation is mainly based on the subtle differences in the physical and chemical properties of isotopes, including mass, boiling point, diffusion coefficient, and reactivity. By utilizing these differences in properties, isotopes can be separated by various methods.

[0003] For example, the patent entitled "A Circulating Cooling Device for Isotope Separation" (patent application number: CN202510090991.5) discloses that during the rotation of several wedge-shaped top blocks driven by an active bevel gear and a first driven bevel gear, they come into contact with the top of the wedge-shaped push block. The inclined sides of the two abut against each other, forcing the wedge-shaped top blocks to slide in the coolant return chamber, thereby driving the coolant to circulate in the U-shaped heat exchange tube and cooling the tail end of the U-shaped heat exchange tube through the heat exchanger. However, the piston stroke is limited, and it can only push a part of the coolant to move. It cannot flow all the coolant to the heat exchanger for cooling. Moreover, the structure is complicated and the use is relatively inconvenient.

[0004] Therefore, it is necessary to propose a device and its sealing structure suitable for isotope separation to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a device and its sealing structure suitable for isotope separation, so as to solve the problems that the piston stroke is limited, can only push a part of the coolant to move, cannot flow all the coolant to the heat exchanger for cooling, and has a complex structure and is inconvenient to use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device suitable for carbon-isotope separation, comprising a support platform and an ion acceleration pipe fixedly installed on the top of the support platform, one end of the ion acceleration pipe being connected to an ion source, and a spiral cooling pipe being sleeved on the outer side of the ion acceleration pipe along its length.

[0007] One end of the spiral cooling pipe is connected to a pump body, and the pump body is connected to a heat exchange pipe. One end of the heat exchange pipe is connected to the other end of the spiral cooling pipe to form a cooling circulation channel, and coolant is provided in the cooling circulation channel.

[0008] The heat exchange tube is installed inside a cooling water tank containing cooling water;

[0009] The ion acceleration pipeline has a first movable seat and a second movable seat that are respectively moved along the length direction on both sides. The first movable seat and the second movable seat have air supply exhaust ports on opposite sides. The top of the first movable seat and the second movable seat are both fixed with fans.

[0010] Preferably, the top of the support platform is fixed with two electric slide rails, which are respectively arranged on both sides of the ion acceleration pipeline, and the first moving seat and the second moving seat are respectively slidably engaged on the corresponding electric slide rails.

[0011] Both the first and second movable seats have cavities inside. The first and second movable seats have arc-shaped grooves on opposite sides. The arc-shaped grooves correspond to the outer side of the spiral cooling pipe. The exhaust port is opened on the arc-shaped grooves, and the air outlet of the fan is connected to the cavity. The cavity and the exhaust port are connected.

[0012] Preferably, both the first movable seat and the second movable seat are fixedly connected to an electromagnet.

[0013] Preferably, a side plate is fixed on the side of the first movable seat away from the second movable seat, and an agitating filter plate is fixed at the bottom of the side plate. The agitating filter plate extends into the cooling water tank, and when the first movable seat moves, the agitating filter plate moves along the length of the cooling water tank.

[0014] Preferably, the agitated filter plate has a through groove, through which the heat exchange tube slides.

[0015] Preferably, the other end of the ion acceleration pipeline is connected to a curved path pipeline, and the curved path pipeline is connected to an ion collector away from the ion acceleration pipeline.

[0016] A support is provided between the ion acceleration pipeline and the curved path pipeline, and the support is fixed to the top of the support platform.

[0017] Preferably, a temperature sensor is installed inside the cooling water tank.

[0018] Preferably, both sides of the arc-shaped groove of the first movable seat and the second movable seat are fixed with an extension protection plate, the extension protection plate is set as a semi-circle, and an absorbent pad is provided on the inner side of the extension protection plate.

[0019] Preferably, a detector is provided on one side of the ion collector, the detector is fixed on a support platform, and a base is fixedly connected to the bottom of the support platform.

[0020] The present invention also discloses a sealing structure suitable for carbon-isotope separation, including a sealing flange, which is disposed at the connection between the ion acceleration pipeline and the curved path pipeline and the ion source.

[0021] The technical effects and advantages of this invention are as follows:

[0022] 1. The cooling circulation system, consisting of spiral cooling pipes, pump body, heat exchange pipes, and cooling water tank, can quickly remove the heat generated during the operation of the ion acceleration pipe, resulting in higher heat dissipation efficiency.

[0023] 2. When the first and second movable seats move along the length of the spiral cooling pipe, the air force generated by the fan blows evenly onto the ion acceleration pipe and the spiral cooling pipe through the exhaust port, thereby achieving auxiliary cooling of the ion acceleration pipe and preventing condensation from forming on the surface of the spiral cooling pipe due to excessively low temperature. Since the two arc-shaped grooves surround the spiral cooling pipe, each position of the spiral cooling pipe and the ion acceleration pipe can play a cooling role.

[0024] 3. The extended protective plate is designed as a semi-circle, and a water-absorbing pad is installed on the inner side of the extended protective plate. It can effectively absorb moisture in the air and any condensation that may be generated, preventing moisture from entering the device and affecting the operation of the components. At the same time, it can prevent the airflow from being output outward and causing the airflow to dissipate. It can also wipe away any condensation that may be generated on the outside of the spiral cooling pipe.

[0025] 4. When the first moving seat moves, it drives the agitator filter plate to move. The agitator filter plate will disturb the water source inside the cooling water tank, causing the cooling water to move violently, breaking the static stratification of the cooling water, and allowing the cooling water in different areas of the water tank to mix fully, avoiding local cooling water temperature from being too high, thereby enhancing the heat exchange effect between the heat exchange tube and the cooling water.

[0026] 5. The first and second moving seats, driven by electric slide rails, can precisely control the position of the electromagnet and form or turn off the magnetic field in different areas according to the actual separation requirements, making the operation flexible and convenient.

[0027] 6. The vacuum environment design inside the ion acceleration pipeline, the setting of multiple acceleration electrodes, and the stable magnetic field formed by the electromagnets in the device jointly ensure the accuracy of ion transmission. The vacuum environment reduces the collision between ions and air molecules, the multiple acceleration electrodes realize the gradual and stable acceleration of ions, and the magnetic field generated by the electromagnets can effectively constrain the ion movement path, prevent ions from deviating from the expected trajectory, and ensure that carbon isotopes of different masses can accurately enter the curved path pipeline for separation. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the device for isotope separation according to the present invention from one perspective.

[0029] Figure 2 For the present invention Figure 1 Enlarged diagram of point A in the middle.

[0030] Figure 3This is a schematic diagram from another perspective of the apparatus of the present invention applicable to isotope separation.

[0031] Figure 4 This is a schematic diagram of the internal structure of the first movable seat of the present invention.

[0032] In the diagram: 1. Support platform; 2. Ion source; 3. Ion acceleration pipeline; 4. Support device; 5. Curved path pipeline; 6. Ion collector; 7. Detector; 8. Spiral cooling pipe; 9. Pump body; 10. Heat exchange pipe; 11. Electric slide rail; 12. First moving seat; 13. Second moving seat; 14. Fan; 15. Side plate; 16. Agitating filter plate; 17. Through groove; 18. Arc groove; 19. Extension protection plate; 20. Base; 21. Cavity; 22. Exhaust port; 23. Electromagnet; 24. Cooling water tank. Detailed Implementation

[0033] This invention provides, for example Figures 1-4 The device shown is suitable for isotope separation, and can be used for the separation of carbon-13 isotopes. It includes a support platform 1 and an ion acceleration pipe 3 fixedly installed on the top of the support platform 1. A base 20 is fixedly connected to the bottom of the support platform 1. The base 20 is made of high-strength alloy material and has anti-slip and wear-resistant rubber pads attached to the bottom. This not only provides a stable support foundation for the entire device, but also prevents the device from shifting due to vibration during operation.

[0034] One end of the ion acceleration pipe 3 is connected to the ion source 2, and the other end is connected to the curved path pipe 5. The curved path pipe 5, away from the ion acceleration pipe 3, is connected to the ion collector 6. The ion source 2, ion acceleration pipe 3, curved path pipe 5, and ion collector 6 are sequentially connected to form a complete ion transport and separation channel. The ion source 2, as the ion generation source, employs advanced radio frequency discharge technology to stably generate a high-purity carbon ion beam. The intensity and stability of the ion beam can be precisely controlled by adjusting the radio frequency power. The two ends of the ion acceleration pipe 3 are connected to the ion source 2 and the curved path pipe 5, respectively. Its interior is designed with a vacuum environment, and the inner wall of the pipe undergoes special polishing and is coated with an anti-oxidation coating. This minimizes collision losses during ion transport, ensuring ion transport efficiency, and prevents oxidation of the inner wall from affecting ion purity. To further enhance the ion acceleration effect, multiple sets of accelerating electrodes are also installed inside the ion acceleration pipe 3. By applying voltages of different gradients, the ions are gradually accelerated, ensuring that they gain sufficient kinetic energy to enter the subsequent separation stage.

[0035] The ion collector 6 has a detachable collection chamber made of corrosion-resistant material, which facilitates the subsequent collection and extraction of the separated carbon-13 isotopes.

[0036] A detector 7 is installed on one side of the ion collector 6. The detector 7 is fixed on the support stage 1 and adopts high-precision mass spectrometry detection technology. It can detect the separated ions in real time, accurately analyze the purity and yield of carbon-13 isotopes, and transmit the detection data to the control system in real time, so that the operators can adjust the device operating parameters in a timely manner to ensure the separation effect.

[0037] A spiral cooling tube 8 is sleeved on the outside of the ion acceleration pipe 3 along its length. The spiral cooling tube 8 is made of copper alloy with high thermal conductivity.

[0038] One end of the spiral cooling pipe 8 is connected to a pump body 9, and the pump body 9 is connected to a heat exchange pipe 10. One end of the heat exchange pipe 10 is connected to the other end of the spiral cooling pipe 8, forming a cooling circulation channel. Coolant is placed inside the cooling circulation channel. The pump body 9 is a high-performance, corrosion-resistant centrifugal pump with stable delivery pressure and flow rate, which can provide sufficient power to the coolant in the cooling circulation channel and ensure smooth circulation of the coolant in the pipe. The heat exchange pipe 10 is also made of copper alloy and is placed inside a cooling water tank 24 containing cooling water.

[0039] The cooling circulation system, consisting of the spiral cooling pipe 8, pump body 9, heat exchange pipe 10, and cooling water tank 24, can quickly remove the heat generated by the ion acceleration pipe 3 during operation. The tight fit design between the spiral cooling pipe 8 and the ion acceleration pipe 3, and the serpentine structure of the heat exchange pipe 10, significantly improve the heat exchange efficiency.

[0040] The ion acceleration pipeline 3 has a first movable seat 12 and a second movable seat 13 that are respectively moved along the length direction on both sides. The first movable seat 12 and the second movable seat 13 have air supply exhaust ports 22 on opposite sides. The top of the first movable seat 12 and the second movable seat 13 are both fixed with fans 14.

[0041] Two electric slide rails 11 are fixed at the top of the support platform 1. The two electric slide rails 11 are respectively set on both sides of the ion acceleration pipe 3. The first moving seat 12 and the second moving seat 13 are respectively slidably engaged on the corresponding electric slide rails 11. The electric slide rails 11 adopt a high-precision linear guide structure and are equipped with servo motor drive. They have the characteristics of accurate positioning and smooth operation, and can accurately control the moving position and speed of the first moving seat 12 and the second moving seat 13.

[0042] Both the first movable seat 12 and the second movable seat 13 have cavities 21 inside. An arc-shaped groove 18 is formed on the opposite side of the first movable seat 12 and the second movable seat 13, corresponding to the outer side of the spiral cooling pipe 8. An exhaust port 22 is formed on the arc-shaped groove 18, and the air outlet of the fan 14 is connected to the cavity 21, and the cavity 21 is connected to the exhaust port 22. The curvature of the arc-shaped groove 18 matches the outer diameter of the spiral cooling pipe 8, ensuring that the first movable seat 12 and the second movable seat 13 will not collide with the spiral cooling pipe 8 during movement, and also providing some protection for the spiral cooling pipe 8.

[0043] When the fan 14 is started, outside air enters the cavity 21 after being filtered, and is then blown evenly onto the ion acceleration pipe 3 and the spiral cooling pipe 8 through the exhaust port 22, thereby providing auxiliary cooling for the ion acceleration pipe 3 and preventing condensation from forming on the surface of the spiral cooling pipe 8 due to excessively low temperature.

[0044] Electromagnets 23 are fixedly connected inside both the first movable seat 12 and the second movable seat 13. When the electromagnets 23 on both sides of the ion acceleration pipe 3 are energized, they generate magnetic force and form a magnetic field. When ions are accelerated in the ion acceleration pipe 3 and enter the magnetic field region, according to the Lorentz force law, the ions will be subjected to a force perpendicular to the direction of their velocity and the direction of the magnetic field. This force will cause the ion's motion path to bend, thereby constraining the ions and preventing them from deviating from the expected trajectory, ensuring that the ions can accurately enter the ion bending path pipe 5. At the same time, the first movable seat 12 and the second movable seat 13 can be moved to drive the electromagnets 23 on both sides to generate a magnetic field at different positions, such as the position of the ion acceleration pipe 3 near the bending path pipe 5. When moved to other positions, the electromagnets 23 can be de-energized to avoid unnecessary magnetic field interference with the ion movement in other areas of the ion acceleration pipe 3.

[0045] A side plate 15 is fixed to the side of the first movable seat 12 away from the second movable seat 13. An agitating filter plate 16 is fixed to the bottom of the side plate 15. The agitating filter plate 16 extends into the cooling water tank 24. When the first movable seat 12 moves, the agitating filter plate 16 moves along the length of the cooling water tank 24. When the agitating filter plate 16 moves along the length of the cooling water tank 24, it can filter out any impurities that may exist in the cooling water in the cooling water tank 24, preventing impurities from covering the heat exchange tube 10 and affecting heat exchange.

[0046] The agitated filter plate 16 has a through groove 17 through which the heat exchange tube 10 slides. During its movement, the agitated filter plate 16 disturbs the water inside the cooling water tank 24, causing vigorous movement of the cooling water and breaking up the static stratification. This allows the cooling water in different areas of the tank to mix thoroughly, preventing localized overheating and enhancing the heat exchange effect between the heat exchange tube 10 and the cooling water, thus ensuring the cooling efficiency of the cooling circulation channel. Simultaneously, the through groove 17, slightly larger than the outer diameter of the heat exchange tube 10, ensures that the agitated filter plate 16 does not jam against the heat exchange tube 10 during movement, guaranteeing smooth agitation.

[0047] A support 4 is provided between the ion acceleration pipe 3 and the curved path pipe 5, and the support 4 is fixed to the top of the support platform 1.

[0048] A temperature sensor is installed inside the cooling water tank 24.

[0049] Both sides of the arc-shaped groove 18 of the first movable seat 12 and the second movable seat 13 are fixed with extended protective plates 19. The extended protective plates 19 are semi-circular, and water-absorbing pads are provided on the inner side of the extended protective plates 19. They can effectively absorb moisture in the air and any condensation that may be generated, preventing moisture from entering the device and affecting the operation of the components. At the same time, they can prevent the airflow from being output outward and causing the airflow to dissipate. They can also wipe away any condensation that may be generated on the outside of the spiral cooling pipe 8.

[0050] This invention also discloses a sealing structure suitable for isotope separation, including a sealing flange. The sealing flange is located at the connection between the ion acceleration pipeline 3, the curved path pipeline 5, and the ion source 2. The flange is made of stainless steel, and the sealing surface of the flange is precision ground to ensure surface flatness and smoothness. Multiple layers of sealing gaskets are arranged between the sealing flanges. The sealing gaskets are made of polytetrafluoroethylene material that is resistant to high temperatures and corrosion and has good elasticity. The multi-layer sealing design can effectively improve the sealing performance, prevent the vacuum environment inside the device from being destroyed, and prevent external air from entering and affecting the purity and transmission efficiency of ions.

Claims

1. An apparatus suitable for isotope separation, comprising a support platform (1) and an ion acceleration pipe (3) fixedly installed on the top of the support platform (1), wherein one end of the ion acceleration pipe (3) is connected to an ion source (2), characterized in that: The ion acceleration pipe (3) is fitted with a spiral cooling pipe (8) along its length on the outside; One end of the spiral cooling pipe (8) is connected to a pump body (9), and the pump body (9) is connected to a heat exchange pipe (10). One end of the heat exchange pipe (10) is connected to the other end of the spiral cooling pipe (8) to form a cooling circulation channel. Coolant is provided in the cooling circulation channel. The heat exchange tube (10) is installed inside the cooling water tank (24) containing cooling water; The ion acceleration pipeline (3) has a first movable seat (12) and a second movable seat (13) that are respectively moved along the length direction on both sides. The first movable seat (12) and the second movable seat (13) have air supply exhaust ports (22) on opposite sides. The top of the first movable seat (12) and the second movable seat (13) are fixed with fans (14).

2. The apparatus for isotope separation according to claim 1, characterized in that: The top of the support platform (1) is fixed with two electric slide rails (11). The two electric slide rails (11) are respectively set on both sides of the ion acceleration pipe (3). The first moving seat (12) and the second moving seat (13) are respectively slidably engaged on the corresponding electric slide rails (11). The first movable seat (12) and the second movable seat (13) are both provided with cavities (21). The first movable seat (12) and the second movable seat (13) are provided with arc-shaped grooves (18) on opposite sides. The arc-shaped grooves (18) correspond to the outer side of the spiral cooling pipe (8). The exhaust port (22) is opened on the arc-shaped groove (18), and the air outlet of the fan (14) is connected to the cavity (21). The cavity (21) and the exhaust port (22) are connected.

3. The apparatus for isotope separation according to claim 1, characterized in that: Electromagnets (23) are fixedly connected inside both the first movable seat (12) and the second movable seat (13).

4. The apparatus for isotope separation according to claim 1, characterized in that: A side plate (15) is fixed on the side of the first movable seat (12) away from the second movable seat (13). A stirring filter plate (16) is fixed at the bottom of the side plate (15). The stirring filter plate (16) extends into the cooling water tank (24). When the first movable seat (12) moves, the stirring filter plate (16) moves along the length of the cooling water tank (24).

5. The apparatus for isotope separation according to claim 4, characterized in that: The agitated filter plate (16) has a through groove (17) and the heat exchange tube (10) slides through the through groove (17).

6. The apparatus for isotope separation according to claim 1, characterized in that: The other end of the ion acceleration pipe (3) is connected to a curved path pipe (5), and the curved path pipe (5) is connected to an ion collector (6) away from the ion acceleration pipe (3). A support (4) is provided between the ion acceleration pipe (3) and the curved path pipe (5), and the support (4) is fixed to the top of the support platform (1).

7. The apparatus for isotope separation according to claim 1, characterized in that: A temperature sensor is installed inside the cooling water tank (24).

8. The apparatus for isotope separation according to claim 1, characterized in that: Both sides of the arc groove (18) of the first movable seat (12) and the second movable seat (13) are fixed with extension protection plates (19). The extension protection plates (19) are set as semi-circular, and the inner side of the extension protection plates (19) is provided with a water-absorbing pad.

9. The apparatus for isotope separation according to claim 1, characterized in that: A detector (7) is provided on one side of the ion collector (6), the detector (7) is fixed on the support platform (1), and a base (20) is fixedly connected to the bottom of the support platform (1).

10. A sealing structure suitable for isotope separation, characterized in that: The apparatus for isotope separation as described in any one of claims 1-9 includes a sealing flange disposed at the connection between the ion acceleration pipeline (3) and the curved path pipeline (5) and the ion source (2).

Images