Water-cooling supporting device for boron neutron capture therapy solid-state lithium target

Abstract

The invention relates to the technical field of solid-state lithium target water cooling, in particular to a water-cooling supporting device for a boron neutron capture therapy solid-state lithium target. According to the technical scheme, the water cooling device comprises a water cooling base providing support, an inclination angle supporting support is installed on the top of the water cooling base, the section of the inclination angle supporting support is of a right triangle structure, a structural material is installed on the bevel edge of the inclination angle supporting support, and a cooling assembly is arranged on the structural material; a heat sink material is fixedly installed on the side, away from the dip angle supporting support, of the structural material, and cooling channel ribs are evenly arranged on one side of the heat sink material. The whole structure is compact, the heat removal problem of the accelerator neutron source BNCT solid-state lithium target can be simply, conveniently and efficiently solved, continuous, safe and stable operation of a neutron source system is guaranteed, the requirement for high-flux neutron yield is met, and the problems that the solid-state lithium target is short in service life due to lithium film evaporation, melting and the like and the target structure is unstable due to heating can be effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of water cooling of solid lithium targets, and in particular to a water cooling support device for boron neutron capture therapy solid lithium targets. Background Art

[0002] Boron neutron capture therapy (BNCT) is an innovative cancer treatment method based on the reaction between neutrons and boron nuclei. It has received widespread attention and in-depth research worldwide in recent years. The core principle of BNCT is to generate high-energy neutrons through a neutron source to target and destroy tumor cells while minimizing damage to surrounding normal tissues. As a key component of BNCT technology, the performance of the accelerator neutron source directly determines the neutron yield and the efficiency of treatment. However, accelerator neutron sources face a series of technical challenges in practical applications, especially the problem of heat load generated by the target material after being bombarded by high-energy particle beams.

[0003] In order to achieve the dose requirement of several Gy / min during BNCT treatment, the target needs to operate stably and continuously under the bombardment of high-intensity beam. This strong plasma bombardment will form significant heat energy accumulation on the target surface, causing the local temperature of the target to rise rapidly. If the heat cannot be effectively removed, it may cause the target to melt, fall off or degrade in performance, ultimately affecting the stability of neutron yield and the safe operation of the equipment.

[0004] At present, commonly used target materials include lithium (Li) and beryllium (Be). Under the same proton beam energy conditions, lithium targets can provide higher neutron yields due to their larger reaction cross-section. However, the low melting point of lithium (less than 180°C) makes it easy to fail under high heat flux conditions, and although beryllium targets have a higher melting point, their high cost and complex processing technology limit their widespread application. Therefore, the target material design needs to be further optimized to achieve higher heat load tolerance and more stable performance.

[0005] In addition, to ensure the long-term stable operation of the BNCT accelerator neutron source, the target design must consider many factors, including good thermal conductivity, efficient heat removal mechanism, and adaptability to the proton beam distribution. Existing solid target materials have limited application capabilities under high heat flux conditions. Therefore, designing a solid target material that can withstand high heat loads and meet neutron yield requirements has become a key technical research direction.

[0006] In summary, the present application proposes a water-cooled support device for a solid lithium target in boron neutron capture therapy. Summary of the invention

[0007] The purpose of the present invention is to address the problem in the background technology that the application capability of existing solid target materials under high heat flux density conditions is limited, and to propose a water-cooled support device for boron neutron capture therapy solid lithium targets.

[0008] The technical solution of the present invention is as follows: a water-cooled support device for a solid lithium target for boron neutron capture therapy, comprising a water-cooled base for providing support, a tilted support bracket is installed on the top of the water-cooled base, the cross section of the tilted support bracket is a right-angled triangle structure, a structural material is installed on the hypotenuse of the tilted support bracket, and a cooling component is arranged on the structural material;

[0009] A heat sink material is fixedly mounted on one side of the structural material away from the tilt support bracket, cooling channel ribs are evenly arranged on one side of the heat sink material, and a solid lithium film is arranged in an inclined manner on the other side of the heat sink material.

[0010] Optionally, the cooling assembly includes a water inlet installed on the top side of the structural material, and a water outlet installed on the bottom side of the structural material.

[0011] Optionally, a cooling channel is provided on the heat sink material, the cooling channel is communicated with a water inlet and a water outlet, and the water outlet is connected to a water cooling base.

[0012] Optionally, the heat sink material is chromium zirconium copper, the size of the heat sink material is 430mm×100mm×10mm, and the size of the cooling channel is 388mm×12mm×6mm.

[0013] Optionally, the water-cooling base is a cavity structure, a plurality of water-cooling ribs are arranged in the water-cooling base, and heat dissipation channels are arranged between the plurality of water-cooling ribs.

[0014] Optionally, the heat sink material and the structural material are connected by brazing.

[0015] Compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0016] The overall structure of the present invention is compact, and can simply, conveniently and efficiently solve the problem of heat removal of the solid-state lithium target of the accelerator neutron source BNCT, ensure the continuous safe and stable operation of the neutron source system, meet the demand for high-flux neutron yield, and effectively solve the problems of short life of the solid-state lithium target such as lithium film evaporation and melting and the instability of the target structure due to heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a water-cooled support device for a solid lithium target in boron neutron capture therapy;

[0018] Figure 2It is a schematic diagram of the structure of the heat sink material and the cooling channel ribs;

[0019] Figure 3 This is a schematic diagram of the top view of the water cooling base.

[0020] Figure numerals: 1. solid lithium membrane; 2. heat sink material; 3. cooling channel ribs; 4. structural material; 5. water inlet; 6. water outlet; 7. tilt support bracket; 8. water cooling base. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0023] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example

[0028] like Figures 1 to 3 As shown, the present invention proposes a water-cooling support device for boron neutron capture therapy of solid lithium targets, including a water-cooling base 8 for providing support. The water-cooling base 8 is a cavity structure. A plurality of water-cooling ribs are arranged inside the water-cooling base 8. Heat dissipation channels are formed between the plurality of water-cooling ribs to accelerate heat removal from the water-cooling base 8.

[0029] like Figure 1 and Figure 3 As shown, a tilt support bracket 7 is installed on the top of the water-cooled base 8, and the cross section of the tilt support bracket 7 is a right-angled triangle structure. A structural material 4 is installed on the hypotenuse of the tilt support bracket 7, and a cooling component is arranged on the structural material 4; the cooling component includes a water inlet 5 installed on one side of the top of the structural material 4, and a water outlet 6 is installed on one side of the bottom of the structural material 4. A cooling channel is arranged on the heat sink material 2, and the cooling channel is connected with the water inlet 5 and the water outlet 6. The water outlet 6 is connected to the water-cooled base 8. The coolant enters the cooling channel in the structural material 4 from the water inlet 5, and is discharged from the water outlet 6 to the water-cooled base 8. Water is cooled through the heat dissipation through-holes and water-cooled ribs.

[0030] like Figure 2 As shown, the device constructs a multi-level cooling structure, from the heat sink material 2 and its cooling channel ribs 3, to the cooling channels in the structural material 4, and then to the water-cooling ribs and heat dissipation channels of the water-cooling base 8, which can quickly and efficiently transfer and dissipate the heat generated by the solid lithium film 1, avoiding heat accumulation and causing the target material temperature to be too high, effectively solving the problem of evaporation and melting of the lithium film due to excessive temperature, and ensuring the service life of the target material.

[0031] Through the efficient heat removal mechanism, it is ensured that the neutron source system can continue to operate safely and stably under the continuous bombardment of the proton beam. The stable operating state can ensure the stability of the neutron yield, provide a stable neutron source for boron neutron capture therapy, and improve the treatment effect and reliability; the adjustable angle design of the tilt support bracket 7 increases the irradiation area of ​​the proton beam on the surface of the solid lithium film 1 and reduces the heat flux density. This not only helps to increase the neutron yield and meet the needs of high-flux neutron yield, but also allows the solid lithium film 1 to be heated more evenly, enhances the stability of the target structure, and avoids instability of the target structure due to local overheating.

[0032] The heat sink material 2 is chromium zirconium copper, the size of the heat sink material 2 is 430mm×100mm×10mm, the size of the cooling channel is 388mm×12mm×6mm, and cooling channel ribs 3 are evenly arranged on one side of the heat sink material 2. The other side of the heat sink material 2 is provided with an inclined solid lithium film 1. The heat sink material 2 is fixedly installed on the side of the structural material 4 away from the inclination support bracket 7. The inclination support bracket 7 provides a stable inclination angle for the heat sink material 2 and the structural material 4, and is connected by bolts. The adjustment of the angle can increase the irradiation area of ​​the beam on the surface of the solid lithium film 1 and reduce the heat flux density.

[0033] It is worth noting that the heat sink material 2 and the structural material 4 are connected by brazing. Among them, the heat sink material 2 is made of chromium zirconium copper, which has good thermal conductivity, can quickly absorb and conduct heat, and improve heat dissipation efficiency. The heat sink material 2 and the structural material 4 are connected by brazing. This connection method makes the two tightly combined, ensuring that heat can be efficiently transferred between the materials, and at the same time the connection is firm, which enhances the structural stability of the entire device.

[0034] Working principle: During the boron neutron capture therapy (BNCT) process, the proton beam generated by the accelerator bombards the solid lithium film 1 on the device. Due to the high energy of the proton beam, a large amount of heat is generated when bombarding the solid lithium film 1, causing the temperature of the target material to rise rapidly. At this time, the cooling component begins to work. The coolant flows in from the water inlet 5, which is installed on the top side of the structural material 4, and the coolant enters the cooling channel in the structural material 4 that is connected to the heat sink material 2. The heat sink material 2 is chromium zirconium copper, and cooling channel ribs 3 are evenly arranged on one side of it, which increases the heat dissipation area, can more efficiently absorb the heat generated by the solid lithium film 1, and transfer the heat to the coolant. The coolant flows out from the water outlet 6 with heat, and the water outlet 6 is installed on the bottom side of the structural material 4. The outflowing coolant enters the water-cooled base 8. The water-cooled base 8 is a cavity structure, and a plurality of water-cooled ribs are arranged inside, and a heat dissipation channel is formed between the water-cooled ribs. The coolant flows in the heat dissipation channel of the water-cooled base 8, and the heat is dissipated through the water-cooled ribs to achieve cooling of the coolant, and the cooled coolant can be recycled. In addition, the tilt support bracket 7 is a right-angled triangle structure, and its hypotenuse is installed with components such as structural material 4 and heat sink material 2, and the angle can be adjusted. By changing the angle, the irradiation area of ​​the proton beam on the surface of the solid lithium membrane 1 can be increased, so that the heat is more evenly distributed and the heat flux density is reduced.

[0035] In this embodiment, the overall device has a compact structure, reasonable layout of components, and small space occupation. It realizes multiple functions such as support, cooling, and irradiation adjustment in a limited space, which is convenient for installation and use in actual BNCT equipment, and improves the integration and practicality of the equipment.

[0036] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A water-cooled support device for a solid lithium target for boron neutron capture therapy, characterized in that: include: A water-cooling base (8) is provided for support, wherein a tilting support bracket (7) is installed on the top of the water-cooling base (8), the cross section of the tilting support bracket (7) is a right-angled triangle structure, a structural material (4) is installed on the hypotenuse of the tilting support bracket (7), and a cooling component is arranged on the structural material (4); A heat sink material (2) is fixedly mounted on one side of the structural material (4) away from the tilt support bracket (7); cooling channel ribs (3) are evenly arranged on one side of the heat sink material (2); and a solid lithium membrane (1) is arranged in an inclined manner on the other side of the heat sink material (2).

2. The water-cooling support device for a solid lithium target for boron neutron capture therapy according to claim 1, characterized in that: The cooling assembly comprises a water inlet (5) installed on the top side of the structural material (4), and a water outlet (6) installed on the bottom side of the structural material (4).

3. The water-cooling support device for a solid lithium target for boron neutron capture therapy according to claim 1, characterized in that: The heat sink material (2) is provided with a cooling channel, the cooling channel is communicated with a water inlet (5) and a water outlet (6), and the water outlet (6) is connected to a water cooling base (8).

4. The water-cooling support device for a solid lithium target for boron neutron capture therapy according to claim 3, characterized in that: The heat sink material (2) is chromium zirconium copper, the size of the heat sink material (2) is 430mm×100mm×10mm, and the size of the cooling channel is 388mm×12mm×6mm.

5. The water-cooling support device for a solid lithium target for boron neutron capture therapy according to claim 1, characterized in that: The water-cooling base (8) is a hollow structure, a plurality of water-cooling ribs are arranged in the water-cooling base (8), and heat dissipation channels are arranged between the plurality of water-cooling ribs.

6. The water-cooling support device for a solid lithium target for boron neutron capture therapy according to claim 1, characterized in that: The heat sink material (2) and the structural material (4) are connected by brazing.

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