A liquid isotope separation quadrupole assembly and system

Abstract

The application provides a liquid isotope separation quadrupole rod assembly and system, which comprises at least four piezoelectric ceramic sheets; the piezoelectric ceramic sheets are provided with convex surfaces, the four piezoelectric ceramic sheets are arranged in a square shape in a circumferential direction, so that the convex surfaces of the piezoelectric ceramic sheets face the inner side, and a region formed by the piezoelectric ceramic sheets together encloses a separation zone of a liquid solution; the positive electrode pin of each piezoelectric ceramic sheet is connected to an ultrasonic field lead wire and an electric field lead wire at the same time, and the negative electrode pin of each piezoelectric ceramic sheet is connected to the ultrasonic field lead wire; an ultrasonic alternating voltage is applied to the piezoelectric ceramic sheets through the ultrasonic field lead wire to form an ultrasonic field in the separation zone; a complex alternating current and direct current voltage is applied to the piezoelectric ceramic sheets through the electric field lead wire to form a quadrupole electric field in the separation zone, and the ultrasonic field and the quadrupole electric field are synchronously coupled to the liquid solution in the separation zone to separate isotopes in the liquid solution. The piezoelectric ceramic sheets are simultaneously applied with the electric field and the ultrasonic field, the ion migration rate in the solution is improved, and the isotope separation efficiency is effectively enhanced.

Description

Technical Field

[0001] This application belongs to the field of isotope separation technology, specifically relating to a liquid isotope separation quadrupole assembly and system. Background Technology

[0002] Isotope separation refers to the technique of enriching or purifying different isotopes in a mixture using physical or chemical methods. This technology plays a crucial role in many fields such as nuclear energy, medicine, and materials science. Liquid-phase quadrupole isotope separation technology is based on the principle of the Matthew equation. Four quadrupoles are arranged in a square in a solution. High-frequency alternating current and direct current are applied to two pairs of poles respectively, forming a dynamic hyperbolic electric field. Under the action of the electric field, ions with specific mass-to-charge ratios are separated from the solution.

[0003] CN115591403A discloses a liquid-phase electric quadrupole device for isotope separation, which relies on an electric field to drive ions in the solution to complete isotope separation. However, the ion migration rate is low in the solution environment, resulting in poor separation efficiency. For high-charge ions, a high DC voltage needs to be applied, but the voltage rise can easily cause a large amount of heat in the solution, disrupting the experimental conditions. At the same time, the high voltage can cause electrode electrolysis, making it difficult for this device to achieve stable separation of high-charge ions. CN115683808A discloses a liquid-phase ultrasonic quadrupole device for elemental separation, which uses an ultrasonic field to drive particle separation instead of an electric field. This can improve the particle migration speed and avoid the problems of high-voltage heat and electrode electrolysis. However, this structure is less effective for separating high-charge ions, and the ultrasound needs to penetrate the outer support before acting on the solution, resulting in significant energy loss and greatly reducing the actual ion separation efficiency.

[0004] Therefore, neither single electric field nor single sound field modes in related technologies can simultaneously achieve the separation efficiency of ions in solution, nor the separation of all elements and isotopes. Summary of the Invention

[0005] Therefore, the purpose of this application is to provide a liquid isotope separation quadrupole assembly and system, which at least solves one of the technical problems mentioned in the background art.

[0006] To address the aforementioned issues, this application provides a liquid isotope separation quadrupole assembly, comprising at least four piezoelectric ceramic plates, an ultrasonic field conductor, and an electric field conductor. The piezoelectric ceramic sheet has a convex surface, and four piezoelectric ceramic sheets are arranged in a square along the circumference so that the convex surfaces of the piezoelectric ceramic sheets face inward, and the area enclosed by them together forms a separation zone for the liquid phase solution. The positive terminal of each piezoelectric ceramic sheet is connected to both the ultrasonic field conductor and the electric field conductor; the negative terminal of each piezoelectric ceramic sheet is connected to the ultrasonic field conductor. An ultrasonic AC voltage is applied to the piezoelectric ceramic sheet through the ultrasonic field conductor to form an ultrasonic field in the separation region; an AC / DC composite voltage is applied to the piezoelectric ceramic sheet through the electric field conductor to form a quadrupole electric field in the separation region. The ultrasonic field and the quadrupole electric field are synchronously coupled to act on the liquid solution in the separation region to separate isotopes in the liquid solution.

[0007] Optionally, two piezoelectric ceramic sheets arranged opposite each other constitute an electrode unit, and four piezoelectric ceramic sheets are divided into two independent groups of electrode units; A combined AC and DC voltage is applied to the two sets of electrode units through the electric field conductor. The DC voltage amplitudes of the two sets of electrode units are equal, but their polarities are opposite. The AC voltage amplitudes of the two sets of electrode units are equal, but their phases are opposite. An ultrasonic AC voltage is applied to the two sets of electrode units via the ultrasonic field conductor. The amplitudes of the ultrasonic AC voltages on the two sets of electrode units are different, but the phases are the same.

[0008] Optionally, the piezoelectric ceramic sheet is a long, arc-shaped sheet structure.

[0009] Optionally, the piezoelectric ceramic sheet also has a concave surface opposite to the convex surface, and electrode layers are respectively arranged on the concave surface and the convex surface, with different polarities of the electrode layers on the concave surface and the convex surface; a positive electrode pin and a negative electrode pin are respectively arranged at both ends along the length direction of a single piezoelectric ceramic sheet, the positive electrode pin is connected to the positive electrode layer, and the negative electrode pin is connected to the negative electrode layer.

[0010] Optionally, the piezoelectric ceramic sheet is coated with an insulating coating.

[0011] Optionally, the insulating coating is an inorganic coating or a polymer coating with high insulation and resistance to electrolyte.

[0012] Optionally, the electric field conductor and the ultrasonic field conductor are both embedded inside the insulating coating, so that the connection nodes of the electric field conductor and the ultrasonic field conductor with the piezoelectric ceramic sheet are sealed and wrapped in the insulating coating.

[0013] Optionally, the four piezoelectric ceramic sheets are identical in size and shape.

[0014] Optionally, the quadrupole assembly further includes a support fixing member, which is detachably connected to the four piezoelectric ceramic sheets and is used to define the relative positions of the four piezoelectric ceramic sheets.

[0015] A second aspect of this application provides a liquid isotope separation quadrupole system, including the liquid isotope separation quadrupole assembly described in any one of the above-mentioned methods and a signal generating device; the signal generating device includes an electric field voltage output circuit and an ultrasonic field voltage output circuit, the ultrasonic field voltage output circuit being used to connect the ultrasonic field conductor and to apply an AC voltage to the piezoelectric ceramic sheet to form an ultrasonic field; the electric field voltage output circuit being used to connect the electric field conductor and to apply an AC / DC composite voltage to the piezoelectric ceramic sheet to form a quadrupole electric field.

[0016] By employing the above technical solution, the present invention has at least the following beneficial effects: This application provides a quadrupole assembly and system for liquid isotope separation, employing a dual-field coupling of a quadrupole electric field and an ultrasonic field. It is suitable for the separation of all elements and isotopes, with a wide range of applications. A piezoelectric ceramic sheet coated with an insulating layer serves as the pole. The quadrupole electric field provides a stable driving force for ion migration, while the ultrasonic field significantly reduces the resistance of the liquid medium to ion migration. This dual action greatly enhances the ion migration rate within the solution, effectively strengthening isotope separation efficiency. Simultaneously, the ultrasonic field helps reduce the operating voltage of the quadrupole electric field, resulting in a small temperature rise in the solution under high load conditions. Furthermore, the entire outer surface of the piezoelectric ceramic sheet is coated with an insulating layer, preventing electrolytic reactions when the pole is immersed in the solution, ensuring excellent reaction system stability. Overall, this system shows excellent application prospects in the field of isotope separation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a liquid isotope separation quadrupole assembly according to an embodiment of this application; Figure 2 This is a schematic diagram of a single piezoelectric ceramic sheet according to an embodiment of this application.

[0018] The reference numerals in the attached figures are as follows: 1. Piezoelectric ceramic sheet; 101. Piezoelectric ceramic sheet No. 1; 102. Piezoelectric ceramic sheet No. 2; 103. Piezoelectric ceramic sheet No. 3; 104. Piezoelectric ceramic sheet No. 4; 2. Separation zone. Detailed Implementation

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] See also Figure 1 and Figure 2 As shown, according to a first aspect of the embodiments of this application, a liquid isotope separation quadrupole assembly is provided, including at least four piezoelectric ceramic plates 1, an ultrasonic field conductor, and an electric field conductor; The piezoelectric ceramic sheet 1 has a convex surface. Four piezoelectric ceramic sheets 1 are arranged in a square along the circumference so that the convex surface of the piezoelectric ceramic sheet 1 faces inward and the area enclosed by them together forms the separation zone 2 of the liquid phase solution. The positive pin of each piezoelectric ceramic sheet 1 is connected to both an ultrasonic field conductor and an electric field conductor, and the negative pin of each piezoelectric ceramic sheet 1 is connected to an ultrasonic field conductor. An ultrasonic AC voltage is applied to the piezoelectric ceramic sheet 1 through the ultrasonic field conductor to form an ultrasonic field in the separation zone 2. A combined AC and DC voltage is applied to the piezoelectric ceramic sheet 1 through the electric field conductor to form a quadrupole electric field in the separation zone 2. The ultrasonic field and the quadrupole electric field are synchronously coupled and act on the liquid solution in the separation zone 2 to separate the isotopes in the liquid solution.

[0024] This system employs a dual-field coupling mechanism of a quadrupole electric field and an ultrasonic field, making it suitable for the separation of all elements and isotopes, with a wide range of applications. Using a piezoelectric ceramic sheet 1 coated with an insulating layer as the electrode, the quadrupole electric field provides a stable driving force for ion migration, while the ultrasonic field significantly reduces the resistance of the liquid medium to ion migration. This dual action greatly enhances the ion migration rate within the solution, effectively strengthening isotope separation efficiency. Simultaneously, the ultrasonic field helps reduce the operating voltage of the quadrupole electric field, resulting in a small temperature rise in the solution under high load conditions. Furthermore, the entire outer surface of the piezoelectric ceramic sheet 1 is coated with an insulating layer, preventing electrolytic reactions when the electrode is immersed in the solution, ensuring excellent stability of the reaction system. Overall, this system shows excellent application prospects in the field of isotope separation.

[0025] Among them, the piezoelectric ceramic sheet 1 has an arc-shaped convex surface. The four piezoelectric ceramic sheets 1 are evenly distributed around the circumference according to the four vertices of a square, and the axes of the four piezoelectric ceramic sheets 1 are parallel to each other. The arc-shaped convex surfaces of all the piezoelectric ceramic sheets 1 face the center. There is a fitting gap between adjacent piezoelectric ceramic sheets 1. The four piezoelectric ceramic sheets 1 together form a columnar hollow space. This columnar hollow space is the separation zone 2, which allows the liquid phase solution to stay and completes the separation of elements and isotopes.

[0026] In this configuration, the positive electrode pin of each piezoelectric ceramic sheet 1 is simultaneously connected to both an ultrasonic field conductor and an electric field conductor, and the negative electrode pin of each piezoelectric ceramic sheet 1 is connected to an ultrasonic field conductor; the ultrasonic field conductor includes an ultrasonic field positive electrode conductor and an ultrasonic field negative electrode conductor, and the electric field conductor is an electric field positive electrode conductor; each piezoelectric ceramic sheet 1 includes a positive electrode pin and a negative electrode pin, the positive electrode pin of each piezoelectric ceramic sheet 1 is simultaneously connected to both an ultrasonic field positive electrode conductor and an electric field positive electrode conductor, and the negative electrode pin of each piezoelectric ceramic sheet 1 is connected to an ultrasonic field negative electrode conductor.

[0027] An ultrasonic field conductor applies an ultrasonic AC voltage to the piezoelectric ceramic plate 1 to form an ultrasonic field within the separation zone 2. Under the influence of this ultrasonic field, the migration rate of ions in the liquid solution of the separation zone 2 is increased, thereby improving the separation efficiency. An electric field conductor applies a combined AC and DC voltage to the piezoelectric ceramic plate 1 to form a quadrupole electric field within the separation zone 2. This provides the power for the separation of ions with specific mass-to-charge ratios in the liquid solution, and also has a good separation effect on high-charge ions. The ultrasonic field and the quadrupole electric field are synchronously coupled and act on the liquid solution of the separation zone 2 to separate isotopes in the liquid solution. The ultrasonic field can effectively reduce the force required for ion migration. Therefore, when the quadrupole electric field and the ultrasonic field act on the solution simultaneously, the voltage required for the quadrupole electric field to separate isotopes is reduced, allowing for the separation of high-mass-number ions at a lower voltage. The electrode heating is lower at lower voltages, and for the separation of the same element or isotope, this system can effectively reduce the heating of the solution. Although the piezoelectric ceramic plate 1 is located inside the device, the ultrasonic field can directly act on the liquid solution, significantly reducing the loss of ultrasonic energy.

[0028] Specifically, in this embodiment, there are four piezoelectric ceramic sheets 1, namely, piezoelectric ceramic sheet 101, piezoelectric ceramic sheet 102, piezoelectric ceramic sheet 103, and piezoelectric ceramic sheet 104.

[0029] In some embodiments, two piezoelectric ceramic sheets 1 arranged opposite each other constitute an electrode unit, and four piezoelectric ceramic sheets 1 are divided into two independent groups of electrode units; an AC / DC composite voltage is applied to the two groups of electrode units through an electric field conductor, the DC voltage amplitudes of the two groups of electrode units are equal and the polarities are opposite; the AC voltage amplitudes of the two groups of electrode units are equal and the phases are opposite; an ultrasonic AC voltage is applied to the two groups of electrode units through an ultrasonic field conductor, the ultrasonic AC voltage amplitudes of the two groups of electrode units are unequal and the phases are the same.

[0030] In this system, two diagonally opposite piezoelectric ceramic plates 1 form a complete electrode unit. Four piezoelectric ceramic plates 1 are paired diagonally to form two sets of non-conductive and independently controlled electrode units. AC and DC composite voltage signals are transmitted to the two sets of independent electrode units through electric field wires. A pair of piezoelectric ceramic plates 1 is used to repel ions and bind them to the center by using DC voltages of equal amplitude and opposite polarity. The other pair of piezoelectric ceramic plates 1 is used to attract ions and push them away from the stable region for filtering. Alternating voltages of equal amplitude and opposite phase are superimposed on the DC voltage and switched rapidly to apply a perturbation force to the ions, causing ions that are about to leave the stable region to be pushed back to the stable region. Under the combined effect of the two, a regular, stable, and non-polarized quadrupole driving electric field is formed in the separation region 2, which precisely widens the ion migration speed difference according to the ion mass-charge ratio difference, and realizes the stratified separation of different isotopes.

[0031] An ultrasonic AC voltage is delivered to two independent electrode units via an ultrasonic field conductor. The alternating phase of the ultrasonic AC voltage applied to the two electrode units is exactly the same, which enables the mechanical expansion and contraction vibration rhythm of the four piezoelectric ceramic plates 1 to be synchronized and unified. The superposition of the inwardly radiated ultrasonic waveforms can act on the entire separation zone 2 without vibration cancellation or ultrasonic blind zone, and the entire liquid solution can be subjected to ultrasonic disturbance. The amplitude of the ultrasonic voltage is set to be unequal, and the vibration deformation amplitude of the two sets of diagonal piezoelectric ceramic plates 1 is finely adjusted to correct the ultrasonic field density distribution in the separation zone 2, so that the coupling effect of the electric field and the ultrasonic field is matched and balanced at all points in the separation zone 2.

[0032] In some embodiments, the piezoelectric ceramic sheet 1 is an elongated arc-shaped sheet structure. The arc-shaped piezoelectric ceramic sheet 1 has no sharp edges, and the four-electrode electric field is uniformly distributed without distortion. At the same time, it can concentrate and radiate ultrasonic waves inward, reducing ultrasonic energy loss, and simultaneously stabilizing and reducing the migration resistance of ions in the liquid phase.

[0033] In some embodiments, the piezoelectric ceramic sheet 1 is further provided with a concave surface opposite to the convex surface, and electrode layers are respectively arranged on the concave surface and the convex surface, with different polarities of the electrode layers on the concave surface and the convex surface; a positive electrode pin and a negative electrode pin are respectively provided at both ends along the length direction of a single piezoelectric ceramic sheet 1, the positive electrode pin is electrically connected to the positive electrode layer, and the negative electrode pin is electrically connected to the negative electrode layer.

[0034] In this design, electrode layers are arranged on the concave and convex surfaces respectively. The polarities of the electrode layers on the concave and convex surfaces are different. If the concave surface is the positive electrode layer, then the convex surface is the negative electrode layer; if the concave surface is the negative electrode layer, then the convex surface is the positive electrode layer, thus making the polarities of the electrode layers on the concave and convex surfaces different.

[0035] In this design, each piezoelectric ceramic sheet 1 has a positive electrode pin and a negative electrode pin at both ends along its length. The positive electrode pin is electrically connected to the positive electrode layer, and the negative electrode pin is electrically connected to the negative electrode layer. The positive electrode pin and the negative electrode pin are located at different ends of the piezoelectric ceramic sheet 1. The positive electrode pin is soldered to the positive electrode layer, and the negative electrode pin is soldered to the negative electrode layer. The ultrasonic field positive electrode wire and the electric field positive electrode wire are connected to the positive electrode pin of the piezoelectric ceramic sheet 1, and the ultrasonic field negative electrode wire is connected to the negative electrode pin of the piezoelectric ceramic sheet 1.

[0036] In some embodiments, the piezoelectric ceramic sheet 1 is coated with an insulating coating.

[0037] Among them, the outer surface of the piezoelectric ceramic sheet 1 is covered with an insulating coating, which isolates the electrode layer from direct contact with the liquid solution. When the power is applied, the electrode potential cannot be conducted to the liquid medium, thus avoiding electrolytic reaction in the liquid and ensuring stable and continuous operation of the component under liquid immersion conditions.

[0038] Specifically, the insulating coating is an inorganic or polymeric coating that is resistant to electrolytes and has high insulation properties.

[0039] In some embodiments, the electric field conductors and ultrasonic field conductors are embedded inside the insulating coating so that the connection nodes between the electric field conductors and ultrasonic field conductors and the piezoelectric ceramic sheet 1 are sealed and wrapped inside the insulating coating.

[0040] The electric field conductors and ultrasonic field conductors are completely hidden inside the insulating coating, so that the connection nodes between the electric field conductors and ultrasonic field conductors and the piezoelectric ceramic sheet 1 are sealed, preventing the liquid phase solution from contacting the connection nodes, avoiding wire breakage and poor contact failures, and extending the service life of the component.

[0041] In some embodiments, the four piezoelectric ceramic sheets 1 are identical in size and shape.

[0042] The four piezoelectric ceramic plates 1 are identical in size and shape, and are arranged symmetrically around the center of the separation region 2. The electrode areas and spatial distances of the two sets of electrode units are completely equal.

[0043] In some embodiments, the quadrupole assembly further includes a support fixture detachably connected to the four piezoelectric ceramic plates 1 for defining the relative positions of the four piezoelectric ceramic plates 1.

[0044] In this embodiment, the support fixing member is ring-shaped and sleeved on the outside of the four piezoelectric ceramic plates 1, and is detachably connected to them, used to limit the relative position of the four piezoelectric ceramic plates 1. The positioning holes on the support fixing member are used to fix the four piezoelectric ceramic plates 1, constrain the displacement of the piezoelectric ceramic plates 1, and maintain the square enclosed shape under long-term vibration conditions, ensuring that the symmetrical spatial shape of the quadrupole electric field and ultrasonic field does not deform or shift.

[0045] A second aspect of this application provides a liquid isotope separation quadrupole system, including any of the above-described liquid isotope separation quadrupole components and a signal generating device; the signal generating device includes an electric field voltage output circuit and an ultrasonic field voltage output circuit, the ultrasonic field voltage output circuit being used to connect to an ultrasonic field wire and to apply an AC voltage to the piezoelectric ceramic sheet 1; the electric field voltage output circuit being used to connect to an electric field wire and to apply an AC / DC composite voltage to the piezoelectric ceramic sheet 1.

[0046] The electric field voltage output circuit includes a first electric field voltage output circuit and a second electric field voltage output circuit. The first electric field voltage output circuit is connected to the positive pin of one set of electrode units through an electric field positive electrode wire, and the second electric field voltage output circuit is connected to the positive pin of another set of electrode units through an electric field positive electrode wire. It is used to apply AC or DC voltage to the electrode units to form a quadrupole electric field. The ultrasonic field voltage output circuit includes a first ultrasonic field voltage output circuit and a second ultrasonic field voltage output circuit. The first ultrasonic field voltage output circuit is connected to the positive and negative pins of one set of electrode units through ultrasonic field positive and ultrasonic field negative wires, respectively. The second ultrasonic field voltage output circuit is connected to the positive and negative pins of another set of electrode units through ultrasonic field positive and ultrasonic field negative wires, and is used to apply ultrasonic AC voltage to the electrode units to form an ultrasonic field.

[0047] The piezoelectric ceramic sheet 1 has dual functions of electric field and ultrasonic field. A single piezoelectric ceramic sheet 1 can simultaneously receive voltage signals from both the electric field voltage output circuit and the ultrasonic field voltage output circuit. The resonant frequencies of the four piezoelectric ceramic sheets 1 are kept consistent, and the frequency of the AC voltage output by the ultrasonic field voltage output circuit matches the inherent resonant frequency of the piezoelectric ceramic sheet 1.

[0048] The signal generator can independently adjust the DC voltage amplitude, AC voltage amplitude, and frequency of the electric field voltage output circuit to change the field strength and distribution of the quadrupole electric field. Simultaneously, the signal generator can independently adjust the amplitude and frequency of the AC voltage output from the ultrasonic field voltage output circuit to change the intensity and frequency of the ultrasonic field.

[0049] In the coupled operation of a quadrupole electric field and an ultrasonic field, the ultrasonic field reduces ion migration resistance, enabling the system to separate high-mass-number and high-charge ions even at voltages lower than those operating under a pure quadrupole electric field. The piezoelectric ceramic plate 1 is embedded in the sidewall of the separation zone 2, allowing ultrasonic waves to radiate directly into the liquid solution without an intermediate propagation medium, thus reducing ultrasonic energy loss. Under low-voltage operating conditions, the heat generated by the piezoelectric ceramic plate 1 decreases, and the temperature rise rate of the liquid solution in the separation zone 2 is lower than when using only a quadrupole electric field for separation.

[0050] Specific implementation process: When the same quadrupole electric field AC / DC composite signal is applied to the first piezoelectric ceramic sheet 101 and the third piezoelectric ceramic sheet 103, and another identical quadrupole electric field AC / DC composite signal is applied to the second piezoelectric ceramic sheet 102 and the fourth piezoelectric ceramic sheet 104, a quadrupole electric field will be generated in the separation region 2 formed by the four piezoelectric ceramic sheets 1. When the same ultrasonic AC signal is applied to the first piezoelectric ceramic sheet 101 and the third piezoelectric ceramic sheet 103, and another ultrasonic AC signal is applied to the second piezoelectric ceramic sheet 102 and the fourth piezoelectric ceramic sheet 104, an ultrasonic field will be generated in the separation region 2 formed by the four piezoelectric ceramic sheets 1. The liquid phase solution to be separated is introduced into the quadrupole system. After the liquid level rises to the preset position, the inflow and outflow rates are kept in balance so that the solution passes through the separation zone 2 at a uniform speed. Ions in the solution migrate rapidly under the coupling effect of the quadrupole electric field and the ultrasonic field. Ions with a specific mass-to-charge ratio gather at the center of the separation zone 2, while other ions move to the outer area of ​​the separation zone 2. The solutions in the center and outer areas are collected separately, thus achieving the separation of isotopes in the liquid phase.

[0051] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0052] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A liquid isotope separation quadrupole assembly, characterized in that, Includes at least four piezoelectric ceramic sheets (1), ultrasonic field conductors, and electric field conductors; The piezoelectric ceramic sheet (1) has a convex surface. The four piezoelectric ceramic sheets (1) are arranged in a square along the circumference so that the convex surface of the piezoelectric ceramic sheets (1) faces inward and the area enclosed by them together forms the separation zone (2) of the liquid phase solution. The positive pin of each of the piezoelectric ceramic sheets (1) is simultaneously connected to the ultrasonic field wire and the electric field wire; the negative pin of each of the piezoelectric ceramic sheets (1) is connected to the ultrasonic field wire. An ultrasonic AC voltage is applied to the piezoelectric ceramic sheet (1) through the ultrasonic field conductor to form an ultrasonic field in the separation zone (2); an AC / DC composite voltage is applied to the piezoelectric ceramic sheet (1) through the electric field conductor to form a quadrupole electric field in the separation zone (2). The ultrasonic field and the quadrupole electric field are synchronously coupled to the liquid phase solution in the separation zone (2) to separate the isotopes in the liquid phase solution.

2. The liquid isotope separation quadrupole assembly according to claim 1, characterized in that, Two piezoelectric ceramic sheets (1) arranged opposite each other constitute an electrode unit, and four piezoelectric ceramic sheets (1) are divided into two groups of independent electrode units; A combined AC and DC voltage is applied to the two sets of electrode units through the electric field conductor. The DC voltage amplitudes of the two sets of electrode units are equal, but their polarities are opposite. The AC voltage amplitudes of the two sets of electrode units are equal, but their phases are opposite. An ultrasonic AC voltage is applied to the two sets of electrode units via the ultrasonic field conductor. The amplitudes of the ultrasonic AC voltages on the two sets of electrode units are different, but the phases are the same.

3. The liquid isotope separation quadrupole assembly according to claim 1, characterized in that, The piezoelectric ceramic sheet (1) has a long, arc-shaped sheet structure.

4. A liquid isotope separation quadrupole assembly according to claim 3, characterized in that, The piezoelectric ceramic sheet (1) is also provided with a concave surface opposite to the convex surface. Electrode layers are respectively arranged on the concave surface and the convex surface. The polarities of the electrode layers on the concave surface and the convex surface are different. Each piezoelectric ceramic sheet (1) is provided with a positive electrode pin and a negative electrode pin at both ends along its own length direction. The positive electrode pin is connected to the positive electrode layer, and the negative electrode pin is connected to the negative electrode layer.

5. A liquid isotope separation quadrupole assembly according to claim 1, characterized in that, The piezoelectric ceramic sheet (1) is covered with an insulating coating.

6. A liquid isotope separation quadrupole assembly according to claim 5, characterized in that, The insulating coating is an inorganic or polymeric coating that is resistant to electrolytes and has high insulation properties.

7. A liquid isotope separation quadrupole assembly according to claim 5, characterized in that, The electric field conductor and the ultrasonic field conductor are both embedded inside the insulating coating so that the connection nodes of the electric field conductor and the ultrasonic field conductor with the piezoelectric ceramic sheet (1) are sealed and wrapped in the insulating coating.

8. The liquid isotope separation quadrupole assembly according to any one of claims 1 to 7, characterized in that, The four piezoelectric ceramic sheets (1) are identical in size and shape.

9. The liquid isotope separation quadrupole assembly according to claim 8, characterized in that, The quadrupole assembly also includes a support fixing member, which is detachably connected to the four piezoelectric ceramic sheets (1) and is used to define the relative positions of the four piezoelectric ceramic sheets (1).

10. A liquid isotope separation quadrupole system, characterized in that, The invention includes the liquid isotope separation quadrupole assembly and signal generating device as described in any one of claims 1 to 9; the signal generating device includes an electric field voltage output circuit and an ultrasonic field voltage output circuit, the ultrasonic field voltage output circuit being used to connect the ultrasonic field wire and to apply an AC voltage to the piezoelectric ceramic sheet (1) to form an ultrasonic field; the electric field voltage output circuit being used to connect the electric field wire and to apply an AC / DC composite voltage to the piezoelectric ceramic sheet (1) to form a quadrupole electric field.

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