Magnet structure and assembly method of stable isotope electromagnetic separator

Abstract

This invention discloses a magnet structure and assembly method for a stable isotope electromagnetic separator. The magnet structure includes an upper yoke and a lower yoke, with a first column and a second column positioned between them, the second column being parallel to the first column. Both the first and second columns include multiple magnetic poles arranged from top to bottom, with coils positioned outside each magnetic pole. Multiple adjacent magnetic poles form multiple magnet air regions, which are used to house multiple separation chambers. The magnetic field generated by the magnet structure causes the magnetic field directions of each separation chamber within the first and second columns to be opposite, while maintaining the same magnetic induction intensity within each separation chamber. The magnetic field generated by the magnet structure of this invention is distributed in a ring, fully considering the magnetic field symmetry of a multi-chamber structure, making full use of the magnetic field, and resulting in a low-energy-consumption, lightweight, and small-footprint electromagnetic separator.

Description

Technical Field

[0001] This invention belongs to the field of isotope electromagnetic separator technology, and specifically relates to the magnet structure of a stable isotope electromagnetic separator and its assembly method. Background Technology

[0002] Stable isotopes are substances, and their separation, preparation, and application have developed into a technology—stable isotope separation and application technology—a key discipline in my country. The applications of stable isotopes have covered all aspects of human activity, including national defense, nuclear power engineering, basic science, medicine, biology, earth science, agriculture, ecology, and new materials production, among many other fields. They are also closely related to my country's strategic needs in high-tech fields such as space navigation, quantum sensing, nuclear batteries, and nuclear medicine diagnosis and treatment. In these fields, high-abundance stable isotopes play a crucial role, either directly as core materials or as essential precursors. Obtaining high-abundance stable isotopes requires the support of isotope separation equipment and methods.

[0003] Among various methods for separating stable isotopes, electromagnetic separation can separate almost all isotopes. The main advantages of isotope electromagnetic separation are: good versatility, applicable to the separation of isotopes of almost all multi-nucleon elements; high flexibility, allowing for changes in the separation target within days; high separation coefficient, with single-stage separation reaching hundreds or more; low feed retention, handling mg-level substances; and short equilibration time, allowing for the collection and concentration of isotope products to begin within hours of startup. Isotope electromagnetic separation is well-suited to the needs for high abundance, variety, and small quantities of stable isotopes, making it the only feasible method for obtaining multiple isotopes such as Rb, K, Gd, Ca, Cu, Sb, Er, and Yb.

[0004] In existing technologies, as seen in the report "Successful Development of EMIS-170 Isotope Electromagnetic Separator" (Annual Report of China Institute of Atomic Energy, 2017-08-31, Issue), existing isotope electromagnetic separators are single-chamber structures, with their magnet structures and magnetic field shapes as follows: Figure 1 As shown, the magnetic yoke is an integral enclosed structure, with the vacuum chamber, magnetic poles, and coils all located inside the yoke. This magnet structure is difficult to install, has a large lifting weight, requires specialized lifting tools, and has high installation costs.

[0005] exist Figure 1 The structural extension of the one-cavity four-chamber structure, such as Figure 2 As shown, Figure 2 The magnet structure includes eight magnetic poles and eight coils. It uses a lot of magnet material, resulting in a heavy overall structure, unstable center of gravity, and high requirements for the on-site installation foundation. Figure 2As can be seen from the four annular second magnetic field lines in the four separation chambers, there is a problem with magnetic field interference. Furthermore, because each separation chamber has its own coil and magnetic poles, the overall magnet structure has high energy consumption and low magnetic field utilization.

[0006] In the existing technology, the magnet structure in "CN109772167A-Cooling System for Isotope Electromagnetic Separator" uses air-cooled coils with solid wires. Cooling is achieved by external air supply, which results in a large amount of wire, poor cooling effect, and high noise. Summary of the Invention

[0007] To address the above problems, this invention provides a magnet structure for a stable isotope electromagnetic separator and its assembly method.

[0008] A magnet structure for a stable isotope electromagnetic separator includes an upper yoke and a lower yoke, with a first column and a second column disposed between the upper and lower yokes, the second column being parallel to the first column; wherein the first column and the second column each include multiple magnetic poles arranged from top to bottom, and coils are disposed outside the multiple magnetic poles, with multiple adjacent magnetic poles forming multiple magnet air regions, the multiple magnet air regions being used to house multiple separation chambers; the magnetic field generated by the magnet structure causes the magnetic field directions of each separation chamber in the first column and the second column to be opposite, and the magnetic induction intensity in each separation chamber to be the same.

[0009] Furthermore, the first column includes an upper left magnetic pole, a middle left magnetic pole, and a lower left magnetic pole; the second column includes an upper right magnetic pole, a middle right magnetic pole, and a lower right magnetic pole; a first coil is disposed outside the upper left magnetic pole, a second coil is disposed outside the upper right magnetic pole, a third coil is disposed outside the middle left magnetic pole, a fourth coil is disposed outside the middle right magnetic pole, a fifth coil is disposed outside the lower left magnetic pole, and a sixth coil is disposed outside the lower right magnetic pole.

[0010] Furthermore, the magnet structure also includes: a left yoke support and a right yoke support;

[0011] The right yoke support and the left yoke support are both parallel to the first column and the second column, and the two ends of the right yoke support and the left yoke support are fixedly connected to the upper yoke and the lower yoke, respectively.

[0012] Furthermore, both the upper and lower magnetic yokes include multiple spliced ​​magnetic yoke laminations; and each of the multiple magnetic poles includes multiple spliced ​​magnetic pole laminations.

[0013] Furthermore, the coils are water-cooled coils, and the wires of the water-cooled coils are copper wires.

[0014] Furthermore, the upper magnetic yoke, the lower magnetic yoke, and the plurality of magnetic poles are all cuboid structures.

[0015] The present invention also provides a method for assembling the magnet structure of a stable isotope electromagnetic separator, comprising:

[0016] The lower yoke is assembled using a second yoke lamination.

[0017] The first column is assembled on the upper left side of the lower magnetic yoke;

[0018] A second column is assembled on the upper right side of the lower magnetic yoke;

[0019] Above the first and second pillars, a magnetic yoke is assembled using a first magnetic yoke lamination.

[0020] Furthermore, the first column is assembled on the upper left side of the lower magnetic yoke as follows:

[0021] The installation of the lower left magnetic pole and the fifth coil on the upper left side of the lower magnetic yoke is as follows: the first lower left magnetic pole lamination is installed on the upper left side of the lower magnetic yoke, with the installation direction of the first lower left magnetic pole lamination perpendicular to the installation direction of the second magnetic yoke lamination. The second to N lower left magnetic pole laminations are installed sequentially from left to right. All lower left magnetic pole laminations are welded together as one piece, and the fifth coil is installed on the outside of the lower left magnetic pole.

[0022] Install the lower left separation chamber above the lower left magnetic pole;

[0023] The installation of the left middle magnetic pole and the third coil above the lower left separation chamber is specifically as follows: the first left middle magnetic pole lamination of the left middle magnetic pole is installed above the lower left separation chamber, and the installation direction of the first left middle magnetic pole lamination is parallel to that of the first lower left magnetic pole lamination; the second to N left middle magnetic pole laminations of the left middle magnetic pole are installed sequentially from left to right, all left middle magnetic pole laminations are welded together, and the third coil is installed on the outside of the left middle magnetic pole;

[0024] Install the upper left separation chamber above the middle left magnetic pole;

[0025] The installation of the upper left magnetic pole and the first coil above the upper left separation chamber is specifically as follows: the first upper left magnetic pole lamination of the upper left magnetic pole is installed above the upper left separation chamber. The installation direction of the first upper left magnetic pole lamination is parallel to that of the first middle left magnetic pole lamination. The second to N upper left magnetic pole laminations of the middle left magnetic pole are installed sequentially from left to right. All upper left magnetic pole laminations are welded together as one piece. The first coil is installed on the outside of the upper left magnetic pole.

[0026] Furthermore, a second column is assembled on the upper right side of the lower magnetic yoke as follows:

[0027] The installation of the lower right magnetic pole and the sixth coil on the upper right side of the lower magnetic yoke is as follows: the first lower right magnetic pole lamination is installed on the upper right side of the lower magnetic yoke. The installation direction of the first lower right magnetic pole lamination is perpendicular to the installation direction of the second magnetic yoke lamination. The second to N lower right magnetic pole laminations are installed sequentially from right to left. All lower right magnetic pole laminations are welded together. The sixth coil is installed on the outside of the lower right magnetic pole.

[0028] Install the lower right separation chamber above the lower right magnetic pole;

[0029] The installation of the right middle magnetic pole and the fourth coil above the lower right separation chamber is as follows: the first right middle magnetic pole lamination is installed above the lower right separation chamber. The installation direction of the first right middle magnetic pole lamination is parallel to that of the first lower right magnetic pole lamination. The second to N right middle magnetic pole laminations are installed sequentially from right to left. All right middle magnetic pole laminations are welded together. The fourth coil is installed on the outside of the right middle magnetic pole.

[0030] Install the upper right separation chamber above the middle right magnetic pole;

[0031] The installation of the upper right magnetic pole and the second coil above the upper right separation chamber is specifically as follows: the first upper right magnetic pole lamination is installed above the upper right separation chamber, and the installation direction of the first upper right magnetic pole lamination is parallel to that of the first middle right magnetic pole lamination. The second to N upper right magnetic pole laminations are installed sequentially from right to left. All upper right magnetic pole laminations are welded together as one piece. The third coil is installed on the outside of the upper right magnetic pole.

[0032] Furthermore, the magnet structure assembly method also includes the following steps:

[0033] The right yoke support and the left yoke support are fixedly connected to the upper yoke and the lower yoke, respectively. The right yoke support and the left yoke support are both parallel to the first column and the second column.

[0034] The present invention also provides a stable isotope electromagnetic separator, comprising:

[0035] The magnet structure, each separation chamber of the magnet structure is equipped with an ion source, a receiver, and a beam diagnostic element;

[0036] The stable isotope electromagnetic separator also includes a vacuum system, a water cooling system, a pneumatic system, a power supply and electrical system, and a control system.

[0037] The beneficial effects of the present invention are as follows: The magnetic field generated by the magnet structure of the present invention is distributed in a ring, so that the magnetic field directions of each separation chamber on both sides of the first column and the second column are opposite, and the magnetic induction intensity in each separation chamber is the same; The magnet structure of the present invention fully considers the magnetic field symmetry of the multi-chamber structure, makes full use of the magnetic field, and makes the electromagnetic separator have low energy consumption, light weight and small footprint.

[0038] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A schematic diagram of a single-chamber structure of a stable isotope electromagnetic separator according to the prior art is shown.

[0041] Figure 2 A schematic diagram of a four-chamber structure of a stable isotope electromagnetic separator according to the prior art is shown.

[0042] Figure 3 A schematic diagram of the magnet structure of a stable isotope electromagnetic separator according to an embodiment of the present invention is shown;

[0043] Figure 4 A schematic diagram of the internal support structure of the magnet structure of a stable isotope electromagnetic separator according to an embodiment of the present invention is shown.

[0044] Figure 5 A schematic diagram of the structure of the first coil according to an embodiment of the present invention is shown;

[0045] Figure 6 A schematic diagram of the upper magnetic yoke stack structure according to an embodiment of the present invention is shown;

[0046] Figure 7 A schematic diagram of the upper left magnetic pole stack structure according to an embodiment of the present invention is shown;

[0047] Figure 8 A schematic diagram of a stable isotope electromagnetic separator according to an embodiment of the present invention is shown.

[0048] In the diagram: 101. Overall magnetic yoke; 102. Upper air-cooled coil; 103. Upper magnetic pole; 104. Vacuum chamber; 105. Lower magnetic pole; 106. Lower air-cooled coil; 107. First magnetic line of force; 108. Second magnetic line of force; 1. Magnet structure; 2. Upper magnetic yoke; 3. Lower magnetic yoke; 4. Upper left magnetic pole; 5. Upper left separation chamber; 6. Middle left magnetic pole; 7. Lower left separation chamber; 8. Lower left magnetic pole; 9. Upper right magnetic pole; 10. Upper right separation chamber; 11. Middle right magnetic pole; 12. 13. Lower right separation chamber; 14. Lower right magnetic pole; 15. First coil; 16. Second coil; 17. Third coil; 18. Fourth coil; 19. Fifth coil; 20. Sixth coil; 21. Left yoke support; 22. Right yoke support; 23. Upper left magnetic pole support; 24. Middle left magnetic pole support; 25. Upper right magnetic pole support; 26. Middle right magnetic pole support; 27. Ion source; 28. Vacuum extraction port; 29. ​​Receiver; 20. Beam diagnostic element; 21. Third magnetic field line. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] This invention addresses the problems of low production efficiency and incomplete utilization of magnetic fields in existing single-chamber isotope electromagnetic separators, proposing a multi-chamber stable isotope electromagnetic separator. The magnet structure 1 of this multi-chamber stable isotope electromagnetic separator fully considers the magnetic field symmetry of the multi-chamber structure, making full use of the magnetic field, and resulting in a lightweight and compact electromagnetic separator.

[0051] It should be noted that the multi-chamber isotope electromagnetic separator of this invention is not simply a single-chamber isotope electromagnetic separator with multiple separation chambers. Rather, it takes into account the shape and symmetry of the magnetic field distribution to ensure a simple and reasonable layout of the various components of the electromagnetic separator, facilitating installation and maintenance. Furthermore, this invention eliminates the two magnetic yokes on both sides of the single-chamber electromagnetic separator, minimizing weight and floor space requirements.

[0052] Please see Figure 3 , Figure 3 A schematic diagram of the magnet structure of a stable isotope electromagnetic separator according to an embodiment of the present invention is shown.

[0053] This invention provides a magnet structure for a stable isotope electromagnetic separator, comprising: an upper magnetic yoke 2 and a lower magnetic yoke 3, with a first column and a second column disposed between the upper magnetic yoke 2 and the lower magnetic yoke 3, the second column being parallel to the first column; wherein, both the first column and the second column include multiple magnetic poles arranged from top to bottom, and coils are disposed on the outer side of each of the multiple magnetic poles, the multiple adjacent magnetic poles forming multiple magnet air regions, the multiple magnet air regions being used to house multiple separation chambers.

[0054] pass Figure 3 The third magnetic field line 99 in the figure can determine that the magnetic field generated by the magnet structure 1 in the embodiment of the present invention is distributed in a ring, so that the magnetic field directions of each separation chamber on both sides of the first column and the second column are opposite, and the magnetic induction intensity in each separation chamber is the same.

[0055] Specifically, the upper left magnetic pole 4, upper left separation chamber 5, middle left magnetic pole 6, lower left separation chamber 7, and lower left magnetic pole 8 are sequentially adjacent to each other, forming the first column; the upper right magnetic pole 9, upper right separation chamber 10, middle right magnetic pole 11, lower right separation chamber 12, and lower right magnetic pole 13 are sequentially adjacent to each other, forming the second column. The second column is parallel to the first column, and both ends of the first and second columns are tightly fitted with the upper magnetic yoke 2 and the lower magnetic yoke 3, respectively.

[0056] Furthermore, magnetic air regions are formed between adjacent magnetic poles, specifically: the first magnetic air region is between the upper left magnetic pole 4 and the middle left magnetic pole 6; the second magnetic air region is between the upper right magnetic pole 9 and the middle right magnetic pole 11; the third magnetic air region is between the middle left magnetic pole 6 and the lower left magnetic pole 8; and the fourth magnetic air region is between the middle right magnetic pole 11 and the lower right magnetic pole 13. The first magnetic air region is equipped with an upper left separation chamber 5, the second magnetic air region with an upper right separation chamber 10, the third magnetic air region with a lower left separation chamber 7, and the fourth magnetic air region with a lower right separation chamber 12, thus constituting a stable isotope electromagnetic separator with four chambers in one device.

[0057] Specifically, a first coil 14 is arranged outside the upper left magnetic pole 4, a second coil 17 is arranged outside the upper right magnetic pole 9, a third coil 15 is arranged outside the middle left magnetic pole 6, a fourth coil 18 is arranged outside the middle right magnetic pole 11, a fifth coil 16 is arranged outside the lower left magnetic pole 8, and a sixth coil 19 is arranged outside the lower right magnetic pole 13.

[0058] The magnet structure 1 of this invention has six magnetic poles and six coils, which significantly reduces the amount of magnet material used and the weight of magnet structure 1, requiring only [amount missing]. Figure 2 60% of the weight.

[0059] In the magnet structure 1 of this invention, the middle magnetic pole is shared by both the upper and lower poles, forming the magnetic field required in the upper separation chamber with the upper magnetic pole and the magnetic field required in the lower separation chamber with the lower magnetic pole, thus significantly reducing the energy consumption of the magnet structure 1. The power consumption is [missing information]. Figure 2 The magnet structure accounts for 75%, greatly reducing costs.

[0060] The magnet structure 1 of this invention reduces the size of the upper yoke 2 and the lower yoke 3 in the horizontal direction, and reduces the size of the upper yoke 2, the lower yoke 3 and the multiple magnetic poles in the vertical direction, so that the external dimensions of this invention meet the usage requirements while requiring a small site area.

[0061] The upper left separation chamber 5, lower left separation chamber 7, upper right separation chamber 10, and lower right separation chamber 12 serve as part of the support structure for the first and second columns. Specifically, the lower magnetic yoke 3 fixes and supports the lower left magnetic pole 8, the lower left magnetic pole 8 fixes and supports the lower left separation chamber 7, the lower left separation chamber 7 fixes and supports the middle left magnetic pole 6, the middle left magnetic pole 6 fixes and supports the upper left separation chamber 5, the upper left separation chamber 5 fixes and supports the upper left magnetic pole 4, and the upper left magnetic pole 4 fixes and supports the upper magnetic yoke 2. The lower magnetic yoke 3 fixes and supports the lower right magnetic pole 13, the lower right magnetic pole 13 fixes and supports the lower right separation chamber 12, the lower right separation chamber 12 fixes and supports the middle right magnetic pole 11, the middle right magnetic pole 11 fixes and supports the upper right separation chamber 10, the upper right separation chamber 10 fixes and supports the upper right magnetic pole 9, and the upper right magnetic pole 9 fixes and supports the upper magnetic yoke 2.

[0062] Please see Figure 3 and Figure 4 , Figure 4 A schematic diagram of the internal support structure of the magnet structure of a stable isotope electromagnetic separator according to an embodiment of the present invention is shown.

[0063] The further magnet structure 1 also includes: a left yoke support 20, a left upper magnetic pole support 22, a left middle magnetic pole support 23, a right yoke support 21, a right upper magnetic pole support 24, and a right middle magnetic pole support 25. The right yoke support 21 and the left yoke support 20 are both parallel to the first and second pillars, and their ends are fixedly connected to the upper yoke 2 and the lower yoke 3, respectively, to support the upper yoke 2 and the lower yoke 3. The right yoke support 21 and the left yoke support 20 are cuboids.

[0064] The upper right magnetic pole support 24 is located in the upper right separation chamber 10, and the upper and lower ends of the upper right magnetic pole support 24 are fixedly connected to the upper right magnetic pole 9 and the middle right magnetic pole 11, respectively; the middle right magnetic pole support 25 is located in the lower right separation chamber 12, and the upper and lower ends of the middle right magnetic pole support 25 are fixedly connected to the middle right magnetic pole 11 and the lower right magnetic pole 13, respectively; the upper left magnetic pole support 22 is located in the upper left separation chamber 5, and the upper and lower ends of the upper left magnetic pole support 22 are fixedly connected to the upper left magnetic pole 4 and the middle left magnetic pole 6, respectively; the middle left magnetic pole support 23 is located in the lower left separation chamber 7, and the upper and lower ends of the middle left magnetic pole support 23 are fixedly connected to the middle left magnetic pole 6 and the lower left magnetic pole 8, respectively.

[0065] For example, the upper magnetic yoke 2 and the lower magnetic yoke 3 are both cuboids with a length of 5000-7000 mm, a width of 3000-5000 mm, and a height of 600-1000 mm, and their materials are electromagnetic pure iron DT4 or low carbon steel Q235 or 20#; multiple magnetic poles (including upper left magnetic pole 4, middle left magnetic pole 6, lower left magnetic pole 8, upper right magnetic pole 9, middle right magnetic pole 11, and lower right magnetic pole 13) are all cuboids with a length of 3000-5000 mm, a width of 1500-3000 mm, and a height of 250-500 mm, and their materials are electromagnetic pure iron DT4 or low carbon steel Q235 or 20#.

[0066] Please see Figure 5 , Figure 5 A schematic diagram of the structure of a first coil according to an embodiment of the present invention is shown.

[0067] For example, multiple coils (including the first coil 14, the second coil 15, the third coil 16, the fourth coil 17, the fifth coil 18, and the sixth coil 19) are rectangular hollow rings. The middle of the rectangular hollow ring is a cuboid space. The outer length X1 of the rectangular hollow ring is 3000-5000 mm, the outer width Y1 is 1500-3000 mm, and the height is 150-400 mm. The length X2 of the cuboid space is 2500-4500 mm, and the width Y2 is 1000-2500 mm. The cuboid space has the same height as the rectangular hollow ring.

[0068] Furthermore, multiple coils (including the first coil 14, the second coil 15, the third coil 16, the fourth coil 17, the fifth coil 18, and the sixth coil 19) are water-cooled coils with outer square and inner round copper wires made of TU1 material. They are cooled by circulating deionized water from the inside, resulting in a small wire consumption, good cooling effect, and no noise.

[0069] For example, the separation chamber is rectangular in shape, with a length of 3000–6000 mm, a width of 1500–3000 mm, and a height of 500–800 mm, and is made of aluminum alloy, stainless steel, or copper. A vacuum environment is formed inside the separation chamber, with a vacuum degree better than 1×10⁻³ Pa.

[0070] Please see Figure 6 and Figure 7 , Figure 6 A schematic diagram of the upper magnetic yoke stack structure according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of the upper left magnetic pole stack structure according to an embodiment of the present invention is shown.

[0071] Furthermore, both the upper yoke 2 and the lower yoke 3 include multiple spliced ​​yoke laminations; and each of the multiple magnetic poles includes multiple spliced ​​magnetic pole laminations.

[0072] In this invention, the magnetic yoke (including the upper magnetic yoke 2 and the lower magnetic yoke 3) and multiple magnetic poles (including the upper left magnetic pole 4, the middle left magnetic pole 6, the lower left magnetic pole 8, the upper right magnetic pole 9, the middle right magnetic pole 11, and the lower right magnetic pole 13) all adopt a laminated structure. In this invention, the magnetic yoke, magnetic poles, and separation chamber are all cuboids. The laminates are obtained by cutting the magnetic yoke or magnetic pole into cuboid-shaped thin sheets along the length or width direction. In this invention, the magnetic yoke and magnetic poles can be constructed by tightly fitting the corresponding laminates one by one. The laminated structure of the magnetic yoke and multiple magnetic poles results in a small lifting weight (less than 7 tons), eliminates the need for specialized lifting tools, and is economical. By controlling the size and weight of each laminate, the assembly of the magnets for the stable isotope electromagnetic separator can be completed under conditions of limited space and crane weight.

[0073] This invention also provides a method for assembling a magnet structure for a stable isotope electromagnetic separator, comprising the following steps:

[0074] S1. Assemble the lower magnetic yoke 3 using the second magnetic yoke stack, specifically including:

[0075] S11. On one side of the first second magnetic yoke stack, install the second to Nth second magnetic yoke stacks sequentially from front to back.

[0076] S12. Weld N pieces of the second magnetic yoke stack into one piece to obtain the lower magnetic yoke 3.

[0077] S2. Assemble the first column on the upper left side of the lower magnetic yoke 3, specifically including:

[0078] S21. Install the lower left magnetic pole 8 and the fifth coil 16 on the upper left side of the lower magnetic yoke 3.

[0079] S211. Install the first lower left magnetic pole piece of the lower left magnetic pole 8 on the upper left side of the lower magnetic yoke 3. The installation direction of the first lower left magnetic pole piece is perpendicular to the installation direction of the second magnetic yoke piece.

[0080] S212. Install the second to the Nth lower left magnetic pole stack from left to right.

[0081] S213. Weld all the lower left magnetic pole pieces together as one piece.

[0082] S214. Install the fifth coil 16 outside the lower left magnetic pole 8.

[0083] S22. Install the lower left separation chamber 7 above the lower left magnetic pole 8.

[0084] S23. Install the left middle magnetic pole 6 and the third coil 15 above the lower left separation chamber 7.

[0085] S231. The first left-middle magnetic pole lamination of the left-middle magnetic pole 6 is installed above the lower left separation chamber 7. The installation direction of the first left-middle magnetic pole lamination is parallel to that of the first lower left magnetic pole lamination.

[0086] S232. Install the second to the Nth left-center magnetic pole stack from left to right.

[0087] S233, weld all the left and middle magnetic pole laminations together as one piece.

[0088] S234. Install a third coil 15 outside the left middle magnetic pole 6.

[0089] S24. Install the upper left separation chamber 5 above the middle left magnetic pole 6.

[0090] S25. Install the upper left magnetic pole 4 and the first coil 14 above the upper left separation chamber 5.

[0091] S251. The first upper left magnetic pole lamination of the upper left magnetic pole 4 is installed above the upper left separation chamber 5. The installation direction of the first upper left magnetic pole lamination is parallel to that of the first middle left magnetic pole lamination.

[0092] S252. Install the second to the Nth stack of upper left magnetic pole pieces 4 from left to right.

[0093] S253. Weld all the upper left magnetic pole pieces together as one piece.

[0094] S254. Install the first coil 14 outside the upper left magnetic pole 4.

[0095] S3. Assembling the second column on the upper right side of the lower magnetic yoke 3 specifically includes:

[0096] S31. Install the lower right magnetic pole 13 and the sixth coil 19 on the upper right side of the lower magnetic yoke 3.

[0097] S311. Install the first right lower magnetic pole lamination of the lower magnetic pole 13 on the upper right side of the lower magnetic yoke 3. The installation direction of the first right lower magnetic pole lamination is perpendicular to the installation direction of the second magnetic yoke lamination.

[0098] S312. Install the second to the Nth right lower magnetic pole laminations of the right lower magnetic pole 13 from right to left.

[0099] S313. Weld all the lower right magnetic pole pieces together as one piece.

[0100] S314. Install the sixth coil 19 outside the lower right magnetic pole 13.

[0101] S32. Install the lower right separation chamber 12 above the lower right magnetic pole 13.

[0102] S33. Install the right middle magnetic pole 11 and the fourth coil 18 above the lower right separation chamber 12.

[0103] S331. The first right middle magnetic pole lamination of the right middle magnetic pole 11 is installed above the right lower separation chamber 12. The installation direction of the first right middle magnetic pole lamination is parallel to that of the first right lower magnetic pole lamination.

[0104] S332. Install the second to the Nth right center magnetic pole stack from right to left.

[0105] S333, weld all the right and middle magnetic pole laminations together as one piece.

[0106] S334. Install the fourth coil 18 outside the right middle magnetic pole 11.

[0107] S34. Install the upper right separation chamber 10 above the middle right magnetic pole 11.

[0108] S45. Install the upper right magnetic pole 9 and the second coil 17 above the upper right separation chamber 10.

[0109] S451. The first upper right magnetic pole lamination of the upper right magnetic pole 9 is installed above the upper right separation chamber 10. The installation direction of the first upper right magnetic pole lamination is parallel to that of the first middle right magnetic pole lamination.

[0110] S452. Install the second to the Nth stack of upper right magnetic poles 9 sequentially from right to left.

[0111] S453. Weld all the upper right magnetic pole laminations together as one piece.

[0112] S454. Install a second coil 17 outside the upper right magnetic pole 9.

[0113] S4. The magnetic yoke 2 is assembled on top of the first and second pillars using the first magnetic yoke laminations, specifically including:

[0114] S41. The first yoke lamination of the first yoke 2 is installed above the upper left magnetic pole 4 and the upper right magnetic pole 9. The installation direction of the first yoke lamination is parallel to the installation direction of the first yoke lamination.

[0115] S42. Install the second to the Nth first magnetic yoke stack in sequence from front to back.

[0116] S43. Weld all the first yoke laminations of the upper yoke 2 into one piece.

[0117] The magnet structure 1 of the present invention has a simple structure and can make full use of the magnetic field; it is lightweight and has low requirements for the installation foundation. The assembly method of the magnet structure 1 of the present invention can complete the assembly of the stable isotope electromagnetic separator magnet under the conditions of limited site space and crane weight, that is, the user can use the existing factory building for installation without the need to build a new factory building.

[0118] In practice, six coils with the same structure (coil 14, coil 15, coil 16, coil 17, coil 18, and coil 19) are energized simultaneously. The current in each coil is the same in magnitude and direction to ensure that the magnetic field in all separation chambers of the stable isotope electromagnetic separator is the same. This allows the same type of stable isotope to be separated in four separation chambers, making the stable isotope yield four times that of one separator per chamber. In other words, the production efficiency of stable isotope electromagnetic separation can be increased by four times.

[0119] The electromagnetic isotope separator mainly consists of a main magnet yoke, main magnet poles, main magnet coil, separation chamber, ion source 26 and receiver 28, and beam diagnostic element 29. Its auxiliary systems include a vacuum system, water cooling system, power supply electrical system, and control system.

[0120] Please see Figure 8 , Figure 8 A schematic diagram of a stable isotope electromagnetic separator according to an embodiment of the present invention is shown.

[0121] The present invention provides a stable isotope electromagnetic separator, including the above-mentioned magnet structure 1. Each separation chamber in the magnet structure 1 is provided with an ion source 26 and a receiver 28. Each separation chamber is also provided with a vacuum evacuation port 27 and a beam diagnostic element 29.

[0122] In this embodiment, the use of a single device with four chambers can significantly improve the production efficiency of stable isotropic electromagnetic separation.

[0123] Using a single device with four chambers can increase the production efficiency of stable isotopic electromagnetic separation by 4 times.

[0124] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnet structure for a stable isotope electromagnetic separator, characterized in that, include: An upper magnetic yoke and a lower magnetic yoke, wherein a first column and a second column are disposed between the upper magnetic yoke and the lower magnetic yoke, and the second column is parallel to the first column; The first column and the second column each include multiple magnetic poles arranged from top to bottom. Coils are arranged on the outside of the multiple magnetic poles. Multiple adjacent magnetic poles form multiple magnetic air regions, which are used to house multiple separation chambers. The magnetic field generated by the magnetic structure makes the magnetic field direction of each separation chamber in the first column and the second column opposite, and the magnetic induction intensity in each separation chamber is the same. The first column includes an upper left magnetic pole, a middle left magnetic pole, and a lower left magnetic pole; the second column includes an upper right magnetic pole, a middle right magnetic pole, and a lower right magnetic pole; a first coil is arranged outside the upper left magnetic pole, a second coil is arranged outside the upper right magnetic pole, a third coil is arranged outside the middle left magnetic pole, a fourth coil is arranged outside the middle right magnetic pole, a fifth coil is arranged outside the lower left magnetic pole, and a sixth coil is arranged outside the lower right magnetic pole. It also includes: left yoke support and right yoke support; The right yoke support and the left yoke support are both parallel to the first column and the second column, and the two ends of the right yoke support and the left yoke support are respectively fixedly connected to the upper yoke and the lower yoke. Both the upper and lower magnetic yokes include multiple spliced ​​magnetic yoke laminations; each of the multiple magnetic poles includes multiple spliced ​​magnetic pole laminations.

2. The magnet structure of the stable isotope electromagnetic separator according to claim 1, characterized in that, The coils are water-cooled coils, and the wires of the water-cooled coils are copper wires.

3. The magnet structure of the stable isotope electromagnetic separator according to claim 1, characterized in that, The upper yoke, the lower yoke, and the plurality of magnetic poles are all rectangular parallelepiped structures.

4. A method for assembling the magnet structure of a stable isotope electromagnetic separator, characterized in that, The magnet structure according to any one of claims 1-3 comprises: The lower yoke is assembled using a second yoke lamination. The first column is assembled on the upper left side of the lower magnetic yoke; A second column is assembled on the upper right side of the lower magnetic yoke; Above the first and second pillars, a magnetic yoke is assembled using a first magnetic yoke lamination.

5. The method for assembling the magnet structure of the stable isotope electromagnetic separator according to claim 4, characterized in that, The first column is assembled on the upper left side of the lower magnetic yoke as follows: Install the lower left magnetic pole and the fifth coil on the upper left side of the lower magnetic yoke. Specifically, install the first lower left magnetic pole lamination on the upper left side of the lower magnetic yoke. The installation direction of the first lower left magnetic pole lamination is perpendicular to the installation direction of the second magnetic yoke lamination. Install the second to Nth lower left magnetic pole laminations from left to right. Weld all the lower left magnetic pole laminations together. Install the fifth coil on the outside of the lower left magnetic pole. Install the lower left separation chamber above the lower left magnetic pole; The left middle magnetic pole and the third coil are installed above the lower left separation chamber. Specifically, the first left middle magnetic pole lamination is installed above the lower left separation chamber, and the installation direction of the first left middle magnetic pole lamination is parallel to that of the first lower left magnetic pole lamination. The second to Nth left middle magnetic pole laminations are installed sequentially from left to right. All left middle magnetic pole laminations are welded together. The third coil is installed on the outside of the left middle magnetic pole. Install the upper left separation chamber above the middle left magnetic pole; The upper left magnetic pole and the first coil are installed above the upper left separation chamber. Specifically, the first upper left magnetic pole lamination of the upper left magnetic pole is installed above the upper left separation chamber. The installation direction of the first upper left magnetic pole lamination is parallel to that of the first middle left magnetic pole lamination. The second to Nth upper left magnetic pole laminations of the middle left magnetic pole are installed sequentially from left to right. All upper left magnetic pole laminations are welded together. The first coil is installed on the outside of the upper left magnetic pole.

6. The method for assembling the magnet structure of the stable isotope electromagnetic separator according to claim 4, characterized in that, The second column is assembled on the upper right side of the lower magnetic yoke as follows: Install the lower right magnetic pole and the sixth coil on the upper right side of the lower magnetic yoke. Specifically, install the first lower right magnetic pole lamination on the upper right side of the lower magnetic yoke. The installation direction of the first lower right magnetic pole lamination is perpendicular to the installation direction of the second magnetic yoke lamination. Install the second to the Nth lower right magnetic pole laminations from right to left. Weld all the lower right magnetic pole laminations together. Install the sixth coil on the outside of the lower right magnetic pole. Install the lower right separation chamber above the lower right magnetic pole; The right middle magnetic pole and the fourth coil are installed above the lower right separation chamber. Specifically, the first right middle magnetic pole lamination is installed above the lower right separation chamber. The installation direction of the first right middle magnetic pole lamination is parallel to that of the first lower right magnetic pole lamination. The second to Nth right middle magnetic pole laminations are installed sequentially from right to left. All right middle magnetic pole laminations are welded together. The fourth coil is installed on the outside of the right middle magnetic pole. Install the upper right separation chamber above the middle right magnetic pole; The upper right magnetic pole and the second coil are installed above the upper right separation chamber. Specifically, the first upper right magnetic pole lamination is installed above the upper right separation chamber. The installation direction of the first upper right magnetic pole lamination is parallel to that of the first right middle magnetic pole lamination. The second to the Nth upper right magnetic pole laminations are installed sequentially from right to left. All upper right magnetic pole laminations are welded together. The third coil is installed outside the upper right magnetic pole.

7. The method for assembling the magnet structure of the stable isotope electromagnetic separator according to any one of claims 4-6, characterized in that, The magnet structure assembly method also includes the following steps: The right yoke support and the left yoke support are fixedly connected to the upper yoke and the lower yoke, respectively. The right yoke support and the left yoke support are both parallel to the first column and the second column.

8. A stable isotope electromagnetic separator, characterized in that, include: The magnet structure according to any one of claims 1-3, wherein each separation chamber in the magnet structure is provided with an ion source, a receiver, and a beam diagnostic element; The stable isotope electromagnetic separator also includes a vacuum system, a water cooling system, a pneumatic system, a power supply and electrical system, and a control system.

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