A water-cooled support device for a solid lithium target in boron neutron capture therapy

Abstract

The present application relates to solid-state lithium target water cooling technical field, especially to a kind of water-cooling support device for boron neutron capture therapy solid-state lithium target.Its technical scheme includes providing support water-cooled base, the top of water-cooled base is equipped with angle of inclination support bracket, the cross section of angle of inclination support bracket is right triangle structure setting, the hypotenuse of angle of inclination support bracket is equipped with structural material, cooling assembly is arranged on the structural material;The side of structural material away from angle of inclination support bracket is fixedly installed with heat sink material, one side of heat sink material is uniformly provided with cooling channel rib strip.The whole structure of the present application is compact, can simply, conveniently and efficiently solve the heat removal problem of accelerator neutron source BNCT solid-state lithium target, guarantee the continuous safe and stable operation of neutron source system, meet the demand of high-flux neutron yield, effectively solve the short life of lithium film evaporation, melting and other problems and the unstable problem of target structure due to heat.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid-state lithium target water cooling, in particular to a water-cooled support device for a solid-state lithium target in boron neutron capture therapy. BACKGROUND

[0002] Boron neutron capture therapy (BNCT) is an innovative cancer treatment method based on the reaction of neutrons with boron nuclei. In recent years, it has received extensive attention and in-depth research worldwide. The core principle of BNCT is to generate high-energy neutrons through a neutron source, targeting the destruction of 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 the treatment. However, the accelerator neutron source faces a series of technical challenges in practical applications, particularly the problem of thermal load generated by the target material after being bombarded by high-energy particle beams.

[0003] During the BNCT treatment process, in order to achieve a dose requirement of several Gy / min, the target material needs to operate stably under the bombardment of high-intensity beams. This strong plasma bombardment can cause significant thermal energy accumulation on the target surface, leading to a rapid increase in the local temperature of the target material. If the heat cannot be effectively removed, it may cause the target material to melt, fall off, or degrade in performance, ultimately affecting the stability of neutron yield and the safe operation of the equipment.

[0004] Currently, 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℃) makes it prone to failure under high heat flux conditions, while beryllium targets have a higher melting point, but their high cost and complex processing techniques limit their widespread application. Therefore, further optimization of target material design is needed to achieve higher thermal load bearing capacity and more stable performance.

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

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

[0007] The application aims at the problem of limited application ability of existing solid target under high heat flux density in the background art, and provides a water-cooled support device for a solid lithium target of boron neutron capture therapy.

[0008] The technical scheme of the application is a water-cooled support device for a solid lithium target of boron neutron capture therapy, comprising a water-cooled base for providing support, an inclined support bracket is mounted on the top of the water-cooled base, the cross section of the inclined support bracket is provided in a right triangle structure, a structural material is mounted on the hypotenuse of the inclined support bracket, and a cooling assembly is arranged on the structural material.

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

[0010] Optionally, the cooling assembly comprises a water inlet mounted on one side of the top of the structural material, and a water outlet is mounted on one side of the bottom of the structural material.

[0011] Optionally, a cooling channel is arranged on the heat sink material, the cooling channel is in communication with the water inlet and the water outlet, and the water outlet is connected with the water-cooled 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-cooled base is a cavity structure, a plurality of water-cooled ribs are arranged in the water-cooled base, and heat dissipation channels are arranged between the plurality of water-cooled ribs.

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

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

[0016] The application has a compact overall structure, and can simply, conveniently and efficiently solve the problem of heat removal of the solid lithium target of the accelerator neutron source BNCT, guarantee the continuous safe and stable operation of the neutron source system, meet the demand of high-flux neutron yield, and effectively solve the problems of short service life and unstable target structure caused by heating of the solid lithium target. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic view of a water-cooled support device for a solid lithium target of boron neutron capture therapy;

[0018] Figure 2Structure diagram of heat sink material and cooling channel rib;

[0019] Figure 3 Structure diagram of water-cooled base from top.

[0020] Figures: 1, solid-state lithium film; 2, heat sink material; 3, cooling channel rib; 4, structural material; 5, water inlet; 6, water outlet; 7, inclined angle support bracket; 8, water-cooled base. DETAILED DESCRIPTION

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

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

[0023] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

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

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

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Embodiment

[0028] As Figures 1 to 3 shown, the present application proposes a water-cooled support device for boron neutron capture therapy solid lithium target, which comprises a water-cooled base 8 for providing support, the water-cooled base 8 is a cavity structure, a plurality of water-cooled ribs are arranged inside the water-cooled base 8, and heat dissipation channels are formed between the plurality of water-cooled ribs for accelerating heat removal of the water-cooled base 8.

[0029] As Figure 1 and Figure 3 shown, the top of the water-cooled base 8 is mounted with an inclined angle support bracket 7, the cross section of the inclined angle support bracket 7 is arranged in a right triangle structure, the hypotenuse of the inclined angle support bracket 7 is mounted with a structural material 4, and a cooling assembly is arranged on the structural material 4; the cooling assembly comprises a water inlet 5 mounted on one side of the top of the structural material 4, and a water outlet 6 mounted on one side of the bottom of the structural material 4. The heat sink material 2 is provided with a cooling channel, the cooling channel is in communication with the water inlet 5 and the water outlet 6, the water outlet 6 is connected with the water-cooled base 8, and the cooling liquid enters the cooling channel in the structural material 4 from the water inlet 5 and is discharged from the water outlet 6 into the water-cooled base 8. The water is cooled through the heat dissipation through holes and the water-cooled ribs.

[0030] As Figure 2 shown, the present device constructs a multi-level cooling structure, from the heat sink material 2 and its cooling channel ribs 3, to the cooling channel in the structural material 4, to the water-cooled ribs and heat dissipation channels of the water-cooled base 8, which can quickly and efficiently transfer and dissipate the heat generated by the solid lithium film 1, avoid the accumulation of heat to cause the temperature of the target material to be too high, effectively solve the problem of evaporation and melting of lithium film due to high temperature, and ensure 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 operation 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 inclined 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 improve the neutron yield and meet the demand for high-flux neutron yield, but also makes the solid lithium film 1 heat more evenly, enhances the stability of the target structure, and avoids instability of the target structure caused by local overheating.

[0032] The heat sink material 2 is chromium zirconium copper, the size of the heat sink material 2 is 430mmx100mmx10mm, the size of the cooling channel is 388mmx12mmx6mm, the heat sink material 2 is uniformly provided with cooling channel ribs 3 on one side, the other side of the heat sink material 2 is provided with a solid lithium film 1 arranged obliquely, and the heat sink material 2 is fixedly installed on the side away from the inclined support bracket 7 of the structural material 4. The inclined support bracket 7 provides a stable inclined angle for the heat sink material 2 and the structural material 4, and is connected by bolts, and 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 selects chromium zirconium copper, which has good heat conduction performance and can quickly absorb and conduct heat, improving the heat dissipation efficiency. The heat sink material 2 and the structural material 4 are connected by brazing, which makes them tightly combined, ensuring efficient heat transfer between the materials, while the connection is firm, enhancing the structural stability of the entire device.

[0034] Working principle: in the process of boron neutron capture therapy (BNCT), 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 the solid lithium film 1 is bombarded, causing the target temperature to rise rapidly. At this time, the cooling assembly begins to work. The cooling liquid flows into the water inlet 5, which is installed on one side of the top of the structural material 4, and enters the cooling channel in the structural material 4 in communication with the heat sink material 2. The heat sink material 2 is chromium zirconium copper, one side of which is uniformly provided with cooling channel ribs 3, which increases the heat dissipation area and can more efficiently absorb the heat generated by the solid lithium film 1 and transfer the heat to the cooling liquid. The cooling liquid carrying heat flows out of the water outlet 6, which is installed on one side of the bottom of the structural material 4, and the outflowing cooling liquid enters the water-cooled base 8. The water-cooled base 8 is a hollow structure with multiple water-cooled ribs inside, forming a heat dissipation channel between the water-cooled ribs. The cooling liquid flows in the heat dissipation channel of the water-cooled base 8, and the heat is dissipated through the water-cooled ribs to cool the cooling liquid, which can be recycled. In addition, the inclined support bracket 7 is in the form of a right triangle, with the hypotenuse mounting the structural material 4 and the heat sink material 2 and other components, and the angle can be adjusted. By changing the angle, the irradiation area of the proton beam on the surface of the solid lithium film 1 can be increased, and the heat distribution can be more uniform, reducing the heat flux density.

[0035] In this embodiment, the overall device structure is compact, the components are reasonably arranged, and the space occupied is small. In a limited space, multiple functions such as support, cooling, and irradiation adjustment are achieved, 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 a few optional embodiments of the present application, and based on the technical solutions of the present application and the related inspiration 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, The utility model relates to a water-cooled support for supporting a large-sized display screen, which comprises: a water-cooled base (8) provided with an inclined support bracket (7) at the top thereof, the cross section of the inclined support bracket (7) being in the shape of a right-angled triangle, a structural material (4) being mounted on the hypotenuse of the inclined support bracket (7), and a cooling assembly being arranged on the structural material (4); a heat sink material (2) being fixedly mounted on the side of the structural material (4) away from the inclined support bracket (7), a plurality of cooling channel ribs (3) being uniformly arranged on one side of the heat sink material (2), and a solid lithium film (1) being arranged on the other side of the heat sink material (2) in an inclined manner; a cooling channel being arranged on the heat sink material (2) and being in communication with a water inlet (5) and a water outlet (6), the water outlet (6) being connected to the water-cooled base (8); the water-cooled base (8) being in a hollow structure, a plurality of water-cooled ribs being arranged in the water-cooled base (8), and a heat dissipation channel being arranged between the water-cooled ribs.

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

3. A water-cooled support device for a solid lithium target used in boron neutron capture therapy according to claim 1, characterized in that, the heat sink material (2) being made of chromium-zirconium-copper, the size of the heat sink material (2) being 430mm x 100mm x 10mm, and the size of the cooling channel being 388mm x 12mm x 6mm.

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

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