Modularized spliced magnetic assembly for shaft-like dark substance detection

Abstract

The invention relates to the related technical field of shaft-like dark substance detection, and discloses a modular splicing magnetic assembly for shaft-like dark substance detection, which comprises a handheld detector, a detection magnetic assembly is fixedly installed in the handheld detector, and the detection magnetic assembly internally comprises a steel ring assembly, a heat dissipation ring plate and a permanent magnet assembly; a permanent magnet assembly is installed on the inner side of the steel ring assembly in an embedded mode, and a heat dissipation ring plate is installed between the steel ring assembly and the permanent magnet assembly. A self-repairing agent is arranged in the steel ring assembly, and the heat dissipation ring plate conducts heat dissipation and leading-out on the steel ring assembly and the permanent magnet assembly. According to the invention, the steel ring assembly is installed in the permanent magnet assembly in an embedded manner, so that an inner steel ring-outer permanent magnet coaxial integrated structure is formed. According to the assembling mode, the traditional separated design is changed, and efficient gathering and uniform conduction of a magnetic field are achieved through tight attachment.

Description

Technical Field

[0001] This invention belongs to the technical field of axion-like dark matter detection, and more specifically, relates to a modular splicing magnetic component for axion-like dark matter detection. Background Technology

[0002] As a key candidate for cosmic dark matter, the detection of axion-like dark matter places extremely high demands on the accuracy, stability, and long-term effectiveness of magnetic field detection equipment. Currently, the core component of mainstream axion-like dark matter detection equipment is the magnetic module, but its structural design and functional configuration suffer from numerous technical bottlenecks, severely limiting detection efficiency and result reliability.

[0003] First, in traditional magnetic components, the steel ring and permanent magnet are often assembled separately or simply spliced ​​together, lacking precise coaxial positioning design, resulting in a coaxiality deviation that generally exceeds 0.1mm. This structural defect directly causes severe magnetic field leakage and poor uniformity of distribution, with detection accuracy fluctuations often exceeding ±10%. Furthermore, the magnetic field changes induced by axion-like dark matter are extremely weak, making it difficult for existing equipment to overcome magnetic field interference and achieve accurate capture and identification of target signals. Simultaneously, the separate structure has weak mechanical resistance, easily causing relative displacement due to centrifugal force during high-speed rotation detection, further exacerbating magnetic field distortion and shortening equipment lifespan. Existing heat dissipation structures are mostly external heat sinks or independent fans, loosely attached to core components such as the steel ring and permanent magnet, with limited heat dissipation coverage and obstructed heat conduction paths, leading to heat accumulation inside the components, further deteriorating magnetic field stability and creating a vicious cycle of "high temperature - structural failure - magnetic field distortion."

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a modular splicing magnetic component for the detection of axion-like dark matter, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0005] This invention provides a modular splicing magnetic assembly for axion-like dark matter detection, which overcomes the above-mentioned defects in the prior art.

[0006] The purpose and effectiveness of this invention—a modular splicing magnetic assembly for axion-like dark matter detection—are achieved through the following specific technical means: A modular splicing magnetic assembly for detecting axion-like dark matter includes a handheld detector, in which a detection magnetic assembly is fixedly installed. The detection magnetic assembly includes a steel ring assembly, a heat dissipation ring plate, and a permanent magnet assembly. A permanent magnet component is embedded in the inner side of the steel ring assembly, and a heat dissipation ring plate is installed between the steel ring assembly and the permanent magnet component; The steel ring assembly contains a self-healing agent, and the heat dissipation ring plate dissipates heat from the steel ring assembly and the permanent magnet assembly.

[0007] In a further technical solution, the detection magnetic component includes a magnetic component housing, a first annular shell is fixedly connected to the upper end of the magnetic component housing, an upper rubber block is provided at the upper end of the first annular shell, and a second annular shell is fixedly connected to the lower end of the magnetic component housing, a lower rubber block is fixedly connected to the lower end of the second annular shell.

[0008] In a further technical solution, a coil assembly is provided between the first ring shell and the second ring shell, and a support column is provided between the first ring shell and the second ring shell. The coil assembly includes a coil and a mating central shaft. The coil is disposed between the two sets of support columns. A mating central shaft is provided outside the coil, and a permanent magnet assembly is provided outside the mating central shaft.

[0009] In a further technical solution, a steel ring assembly is embedded and installed on the outside of the permanent magnet assembly, a heat dissipation ring plate is fixedly installed on the outside of the steel ring assembly, and a heat-conducting pipe is embedded between the steel ring assembly and the permanent magnet assembly.

[0010] In a further technical solution, the steel ring assembly includes a steel ring body, the inner side of which is provided with a plurality of sets of grooves, the grooves are provided with a plurality of sets of self-filling liquid installation grooves, the outer side of which is provided with a heat dissipation duct, and a heat dissipation ring plate is fixedly installed inside the heat dissipation duct.

[0011] In a further technical solution, the permanent magnet component includes several sets of arc-shaped permanent magnets, with protrusions on the outer side of each set of arc-shaped permanent magnets, and a heat dissipation component mounting groove in the middle of each arc-shaped permanent magnet, the heat dissipation component mounting groove communicating with the heat dissipation duct.

[0012] A further technical solution is provided, wherein the heat dissipation ring plate includes an annular vertical plate, a first annular plate is fixedly connected to the lower end of the annular vertical plate, a second annular plate is fixedly connected to the upper end of the annular vertical plate, a plurality of heat dissipation grooves are arrayed on the surface of the annular vertical plate, and a plurality of rectangular slots are provided on the surfaces of the second annular plate and the first annular plate.

[0013] A further technical solution involves a self-healing gel inside the self-repairing fluid mounting groove. The self-healing gel material comprises 70-85% (composed of 10-28% styrene-butadiene-styrene block copolymer, 40-60% alkane with 12 carbon atoms, and 2-12% castor oil), providing thermoplasticity and a self-healing base; 5-25% iron oxide powder (particle size 3-300nm), adapted to the magnetic field of the magnetic ring to assist in triggering repair without interfering with the detection magnetic field; 1-10% graphene powder (particle size 500-900nm), improving thermal conductivity and accelerating heat transfer; and 1-10% steel fiber / carbon fiber (diameter 50-100nm, length 0.3-1mm), enhancing the gel's shear resistance and adapting to mechanical stress during rotation.

[0014] A further technical solution is that the heat pipe is made of non-magnetic PPS or PEEK engineering plastic, with a wall thickness of 1-1.5mm, and the inner wall is provided with 4 axial flow guide ribs and 5 sets of annular turbulence protrusions, and the two ends are tapered transition structures; the pipe is filled with ≥99.7% anhydrous ethanol as the heat dissipation fluid, and 1%-3% of 50-200nm high-purity magnetic iron powder is added, along with 0.1%-0.3% polyethylene glycol dispersant.

[0015] A further technical solution includes a handheld grip, with a detection head fixedly connected to the upper end of the handheld grip. An indicator light and a switch button are provided at the connection between the detection head and the handheld grip. The detection head has an internal cavity, and a detection magnetic component is fixedly installed inside the cavity. A detection probe is provided on the outer side of the detection end of the detection magnetic component, and the detection probe is fixedly connected to the detection head housing. A grip groove is provided on the outer side of the handheld grip, and a screw cap is threaded to the other end of the handheld grip. A battery cavity is provided inside the handheld grip, and a battery can be installed inside the cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a modular splicing magnetic assembly for axion-like dark matter detection. A steel ring assembly is embedded within a permanent magnet assembly, forming a coaxial integrated structure of "inner steel ring - outer permanent magnet." This assembly method changes the traditional separate design, achieving efficient magnetic field concentration and uniform conduction through close fitting, avoiding magnetic field leakage, providing a stable ring-shaped detection magnetic field foundation for axion-like dark matter detection, and simultaneously improving the overall structural strength of the assembly to withstand centrifugal force impacts during high-speed rotation.

[0017] This invention discloses a modular splicing magnetic assembly for axion-like dark matter detection. The assembly features corresponding grooves on the outer sides of a steel ring assembly and a permanent magnet assembly, precisely embedding a heat dissipation ring plate into these grooves to form an integrated heat dissipation structure. This design allows the heat dissipation ring plate to simultaneously adhere to both the steel ring assembly and the permanent magnet assembly, solving the problems of poor fit and incomplete heat dissipation coverage inherent in traditional heat dissipation components. Through airflow disturbance during assembly rotation, the heat generated by both assemblies is rapidly dissipated, providing a stable temperature environment for subsequent self-healing functions and heat pipe cooling.

[0018] This invention discloses a modular splicing magnetic assembly for axion-like dark matter detection. A self-repairing gel is stored in a self-filling liquid mounting groove inside a steel ring assembly, while a heat-conducting pipe is embedded between the steel ring assembly and the permanent magnet assembly, forming a functional closed loop of "self-repair + dual heat dissipation". The array-like distribution of the self-repairing liquid mounting groove ensures rapid gel filling of the assembly gaps, while the heat-conducting pipe further enhances the cooling effect through turbulent heat dissipation. Together, these two features solve the problem of assembly adhesion failure caused by high temperatures, achieving a dual guarantee of "structural self-repair + efficient heat dissipation". Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the 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 only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall first appearance structure of the present invention; Figure 2 This is a schematic diagram of the overall second appearance structure of the present invention; Figure 3 This is a schematic diagram of the overall appearance structure of the detection magnetic component in this invention; Figure 4 This is a schematic side view of the overall structure of the detection magnetic component in this invention; Figure 5 This is a schematic diagram of the overall first explosion structure of the detection magnetic component in this invention; Figure 6 This is a schematic diagram of the overall second explosion structure of the detection magnetic component in this invention; Figure 7 This is a schematic diagram of the overall exploded side view of the detection magnetic assembly in this invention; Figure 8 This is a schematic diagram of the external structure of the heat dissipation ring plate in this invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A; Figure 10 This is a schematic diagram of the external structure of the permanent magnet component in this invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram at point B; Figure 12 This is a schematic diagram of the overall appearance structure of the steel ring assembly in this invention; Figure 13 For the present invention Figure 12 A magnified structural diagram at point C.

[0022] Explanation of reference numerals in the attached figures: 1. Handheld detector; 11. Handheld handle; 12. Indicator light; 13. Switch button; 14. Detection head; 15. Detection probe; 16. Grip groove; 17. Screw cap; 2. Detection of magnetic components; 21. Upper rubber block; 22. First ring shell; 23. Magnetic component outer shell; 24. Second ring shell; 25. Lower rubber block; 26. Support column; 3. Steel ring assembly; 31. Steel ring body; 32. Groove; 33. Self-sealing liquid installation groove; 34. Heat dissipation air duct; 4. Heat pipe; 5. Heat dissipation ring plate; 51. First annular plate; 52. Annular vertical plate; 53. Second annular plate; 54. Rectangular slot; 55. Heat dissipation groove plate; 6. Permanent magnet assembly; 61. Arc-shaped permanent magnet; 62. Protrusion; 63. Heat dissipation assembly mounting slot; 7. Coil assembly; 71. Coil; 72. Abutting central shaft. Detailed Implementation

[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0024] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] As attached Figure 1 To be continued Figure 13 As shown: This invention provides a modular splicing magnetic assembly for axion-like dark matter detection, including a handheld detector 1, in which a detection magnetic assembly 2 is fixedly installed. The detection magnetic assembly 2 includes a steel ring assembly 3, a heat dissipation ring plate 5, and a permanent magnet assembly 6. By integrating the core detection components into the detection magnetic assembly 2, functional modular integration is achieved, which simplifies the assembly process, facilitates subsequent targeted maintenance, reduces interference between components, and improves the stability of magnetic field detection. A permanent magnet component 6 is embedded inside the steel ring assembly 3, and a heat dissipation ring plate 5 is installed between the steel ring assembly 3 and the permanent magnet component 6. This embedded assembly structure ensures the coaxiality of the steel ring assembly 3 and the permanent magnet component 6, guarantees the continuity and uniformity of magnetic field conduction, and avoids magnetic field distortion caused by assembly deviation. The central installation of the heat dissipation ring plate 5 can contact both the steel ring assembly 3 and the permanent magnet component 6 at the same time, realizing bidirectional synchronous heat dissipation and more comprehensive heat dissipation coverage. The steel ring assembly 3 is equipped with a self-healing gel, which can quickly and automatically fill and repair gaps caused by high temperature, vibration and other factors between components, avoiding magnetic field leakage or uneven distribution caused by gaps, ensuring the stability and accuracy of magnetic field detection, and restoring equipment performance without manual intervention; the heat dissipation ring plate 5 dissipates heat from the steel ring assembly 3 and the permanent magnet assembly 6, which can promptly remove the heat generated when the components rotate, effectively reducing the operating temperature of the components, avoiding multiple interferences of high temperature on the magnetism of the permanent magnet, the stability of the bonding structure and the detection accuracy, and extending the service life of the components.

[0027] Preferred options are shown in the appendix. Figure 3The detection magnetic component 2 includes a magnetic component housing 23. A first annular shell 22 is fixedly connected to the upper end of the magnetic component housing 23. An upper rubber block 21 is provided at the upper end of the first annular shell 22. A second annular shell 24 is fixedly connected to the lower end of the magnetic component housing 23. A lower rubber block 25 is fixedly connected to the lower end of the second annular shell 24. The fixed connection structure between the magnetic component housing 23 and the first annular shell 22 and the second annular shell 24 constitutes a rigid protective frame for the detection magnetic component 2, which can effectively resist external impacts and protect internal precision components. The upper rubber block 21 and the lower rubber block 25 are made of elastic material, which can buffer the radial and axial vibrations generated when the component rotates at high speed, reduce the fatigue damage of mechanical stress to the internal structure of the magnetic component, and at the same time, their sealing characteristics can prevent dust and moisture from entering the component, avoid component corrosion or short circuit, and further extend the service life of the component.

[0028] Preferred options are shown in the appendix. Figure 5 and appendix Figure 7 A coil assembly 7 is disposed between the first annular shell 22 and the second annular shell 24, and a support column 26 is disposed between the first annular shell 22 and the second annular shell 24. The coil assembly 7 includes a coil 71 and abutting central shaft 72. The coil 71 is disposed between the two sets of support columns 26, and abutting central shaft 72 is disposed outside the coil 71. A permanent magnet assembly 6 is disposed outside the abutting central shaft 72. The support columns 26 adopt a symmetrical distribution design to provide stable radial support for the coil assembly 7, preventing the coil 71 from shifting or deforming due to centrifugal force when the assembly rotates, and ensuring that the magnetic field generated by the coil 71 is uniform and stable. The close fit design between the abutting central shaft 72 and the permanent magnet assembly 6 can directly transmit the electromagnetic driving force to the permanent magnet assembly 6, resulting in a faster driving response and a significant improvement in the uniformity of magnetic field rotation, thereby enhancing the sensitivity of dark matter detection and enabling even weak magnetic field changes to be accurately captured.

[0029] Preferred options are shown in the appendix. Figure 5 and appendix Figure 7 A steel ring assembly 3 is embedded on the outside of the permanent magnet component 6. A heat dissipation ring plate 5 is fixedly installed on the outside of the steel ring assembly 3. A heat conduction pipe 4 is embedded between the steel ring assembly 3 and the permanent magnet component 6. The embedded assembly of the permanent magnet component 6 and the steel ring assembly 3 can enhance the magnetic field concentration effect and reduce magnetic field energy loss. The heat dissipation ring plate 5 on the outside of the steel ring assembly 3 can directly dissipate the heat on the surface of the steel ring assembly 3 to the external environment, while the heat conduction pipe 4 embedded between the two can quickly conduct the conductive heat of the component contact surface, forming a dual heat dissipation structure of "conductive heat dissipation + radiative heat dissipation". The heat dissipation efficiency is improved by more than 40% compared with the traditional single heat dissipation method, effectively controlling the component operating temperature within a safe range below 80℃ and avoiding magnetic decay caused by high temperature.

[0030] Preferred options are shown in the appendix. Figure 12 and appendix Figure 13The steel ring assembly 3 includes a steel ring body 31. The inner side of the steel ring body 31 has an array of grooves 32, and each groove 32 contains a set of self-sealing liquid mounting slots 33. The outer side of the steel ring body 31 has heat dissipation ducts 34, and a heat dissipation ring plate 5 is fixedly installed inside the heat dissipation ducts 34. As the core supporting component, the steel ring body 31's annular structure ensures a circular distribution of the magnetic field. The array of grooves 32 on the inner side can precisely position the permanent magnet assembly 6, improving assembly accuracy. The array design of the self-sealing liquid mounting slots 33 ensures that the self-healing gel is evenly distributed on the inner side of the steel ring body 31, allowing for rapid and complete filling of gaps regardless of their location, avoiding repair blind spots. The matching installation of the heat dissipation ducts 34 on the outer side of the steel ring body 31 with the heat dissipation ring plate 5 creates a directional airflow channel when the assembly rotates, enhancing airflow disturbance, accelerating heat dissipation, and further improving heat dissipation efficiency. Preferably, refer to the attached diagram. Figure 10 and appendix Figure 11 The permanent magnet assembly 6 includes several sets of arc-shaped permanent magnets 61. Each set of arc-shaped permanent magnets 61 has a protrusion 62 on its outer side, and a heat dissipation component mounting groove 63 in the middle of each arc-shaped permanent magnet 61. The heat dissipation component mounting groove 63 communicates with the heat dissipation duct 34. The splicing design of the arc-shaped permanent magnets 61 not only facilitates the replacement of individual permanent magnets and reduces maintenance costs, but also allows for flexible adaptation to different magnetic field strength requirements by adjusting the number or specifications of the arc-shaped permanent magnets 61. The protrusion 62 can be embedded into the groove 32 of the steel ring assembly 3, forming a mechanical interlocking structure, enhancing the assembly stability with the steel ring assembly 3, and preventing relative displacement during high-speed rotation. The through-type design of the heat dissipation component mounting groove 63 and the heat dissipation duct 34 forms a through-type heat dissipation channel, allowing the heat generated inside the permanent magnet assembly 6 to be quickly dissipated through the channel, avoiding uneven magnetic properties caused by localized heat accumulation and ensuring the accuracy of magnetic field detection.

[0031] Preferred options are shown in the appendix. Figure 8 and appendix Figure 9 The heat dissipation ring plate 5 includes an annular vertical plate 52. A first annular plate 51 is fixedly connected to the lower end of the annular vertical plate 52, and a second annular plate 53 is fixedly connected to the upper end of the annular vertical plate 52. A plurality of heat dissipation slots 55 are arrayed on the surface of the annular vertical plate 52, and a plurality of rectangular slots 54 are provided on the surfaces of the second annular plate 53 and the first annular plate 51. The three-dimensional frame structure formed by the annular vertical plate 52, the first annular plate 51, and the second annular plate 53 significantly enhances the structural strength of the heat dissipation ring plate 5, enabling it to withstand the centrifugal force during high-speed rotation, while providing a larger surface area for heat dissipation. The array design of the heat dissipation slots 55 can cut the airflow when the component rotates, generating strong airflow disturbance, breaking the thermal boundary layer, accelerating heat exchange, increasing the heat dissipation area by 60% compared to traditional planar heat dissipation plates, and significantly improving heat dissipation efficiency. The rectangular slots 54 further optimize the airflow path, allowing cold air to quickly enter the heat dissipation area and hot air to be discharged in time, forming efficient convection heat dissipation, while reducing the overall weight of the heat dissipation ring plate 5 and reducing energy consumption when the component rotates.

[0032] Preferred options are shown in the appendix. Figure 12 and appendix Figure 13 The self-repairing liquid installation tank 33 is equipped with a self-healing gel. The self-healing gel material consists of 70-85% styrene-butadiene-styrene block copolymer (10-28%), 40-60% alkane with 12 carbon atoms, and 2-12% castor oil, providing thermoplasticity and a self-healing base; 5-25% iron oxide powder (3-300nm particle size), which is compatible with magnetic ring magnetic field-assisted triggering of repair and does not interfere with the detection magnetic field; 1-10% graphene powder (500-900nm particle size), which improves thermal conductivity and accelerates heat transfer; and 1-10% steel fiber / carbon fiber (50-100nm diameter, 0.3-1mm length), which enhances the gel's shear resistance and is compatible with mechanical stress during rotation. This composite self-healing gel possesses both excellent flowability and stability. When acrylic structural adhesive fails and gaps appear in components due to high temperatures of 120℃, the iron oxide powder, aided by a magnetic ring, can quickly guide the gel to flow into the gaps, with a filling response time of ≤3s, achieving rapid gap sealing. After filling, the gel can quickly solidify under mechanical pressure and molecular forces, restoring the structural integrity between components and ensuring magnetic field detection accuracy fluctuations of ≤±2%. The addition of graphene powder increases the thermal conductivity of the gel to more than 3 times that of traditional gels, enabling rapid heat transfer in conjunction with a heat dissipation structure and preventing gel failure due to heat accumulation. Steel fibers / carbon fibers significantly enhance the shear strength and tensile strength of the gel, allowing it to withstand the mechanical stress during high-speed component rotation. The self-healing gel can be repeatedly repaired ≥10 times, eliminating the need for frequent replacements and significantly reducing maintenance costs and equipment downtime.

[0033] Preferred options are shown in the appendix. Figure 5The heat pipe 4 is made of non-magnetic PPS or PEEK engineering plastic with a wall thickness of 1-1.5mm. The inner wall is equipped with 4 axial flow guide ribs and 5 sets of annular turbulence protrusions, and the two ends are tapered transition structures. The pipe is filled with ≥99.7% anhydrous ethanol as the heat dissipation fluid, and 1%-3% of 50-200nm high-purity magnetic iron powder is added, along with 0.1%-0.3% polyethylene glycol dispersant. The non-magnetic PPS or PEEK engineering plastic material avoids interference from the heat pipe 4 with the detection magnetic field, ensuring the accuracy of magnetic field detection. The 1-1.5mm pipe wall thickness reduces heat transfer resistance while ensuring structural strength. The axial flow guide ribs and annular turbulence protrusions on the inner wall guide the flow of heat dissipation fluid and enhance fluid turbulence. The conical transition structure reduces fluid flow resistance and prevents fluid from stagnating at the pipe end. The anhydrous ethanol inside the pipe has a low boiling point of 78.4℃ and good thermal conductivity, which can quickly absorb the heat generated by the component and vaporize and transfer it. Under the traction of the magnetic ring magnetic field, the magnetic iron powder moves at high speed with the component rotation, forming strong stirring of the heat dissipation fluid, breaking laminar flow and forming turbulent flow, reducing the thickness of the thermal boundary layer, and improving the heat exchange efficiency by more than 35%, effectively avoiding local heat accumulation around the magnetic ring. The polyethylene glycol dispersant ensures that the magnetic iron powder is uniformly dispersed in the heat dissipation fluid, avoiding agglomeration and forming thermally conductive blind zones, and ensuring the stability of the heat dissipation effect.

[0034] Preferred options are shown in the appendix. Figure 1 To be continued Figure 2 The handheld detector 1 includes a handheld handle 11, with a detection head 14 fixedly connected to the upper end of the handheld handle 11. An indicator light 12 and a switch button 13 are provided at the connection between the detection head 14 and the handheld handle 11. The detection head 14 has a cavity inside, and a detection magnetic component 2 is fixedly installed inside the cavity. A detection probe 15 is provided on the outer side of the detection end of the detection magnetic component 2. The detection probe 15 is fixedly connected to the housing of the detection head 14. A grip groove 16 is provided on the outer side of the handheld handle 11. A screw cap 17 is threadedly connected to the other end of the handheld handle 11. A battery cavity is provided inside the handheld handle 11, and a battery can be installed in the cavity. The grip groove 16 on the outer side of the handgrip 11 is ergonomically designed to fit the contours of the fingers, increasing friction during gripping and preventing hand fatigue or device slippage during prolonged operation, thus improving comfort and operational safety. The cavity structure of the detection head 14 provides a closed installation space for the magnetic detection component 2, reducing external electromagnetic interference and ensuring the accuracy of magnetic field detection. The detection probe 15 uses a rigid fixed connection, which can accurately fit the detection surface, reducing detection distance deviation and ensuring the accuracy of magnetic field signal collection. The indicator light 12 provides real-time feedback of different colors according to changes in the magnetic field, allowing operators to quickly judge the detection results without having to look at complex data, improving detection efficiency. The threaded cap 17 facilitates quick opening of the battery cavity for battery replacement without the need for special tools, improving the flexibility of equipment use and battery life.

[0035] Specific usage of this invention: When using this device, first unscrew the threaded cap 17 at the end of the handgrip 11, insert the adapter battery into the internal battery cavity, and tighten the cap 17 to complete the power supply preparation. Then, align the detection head 14 of this device with the designated area of ​​the substance to be detected, ensuring that the detection probe 15 is in contact with the detection surface to ensure that the magnetic field signal is collected without deviation. Next, press the switch button 13 at the connection between the detection head 14 and the handgrip 11, and adjust the device's operating parameters such as magnetic field strength and detection sensitivity using the knob integrated into the button to start the detection magnetic component 2 and put it into working condition.

[0036] After the equipment is started, the coil assembly 7 inside the detection magnetic component 2 is energized. The electromagnetic force generated by the coil 71 drives the opposing central axis 72 to rotate at high speed. The opposing central axis 72 drives the outer permanent magnet assembly 6 to rotate synchronously through the contact transmission, thereby pulling the steel ring assembly 3, the heat conduction pipe 4 embedded between them, and the heat dissipation ring plate 5 on the outside of the steel ring assembly 3 to form an integrated rotational motion, constructing a stable annular detection magnetic field. At this time, the rebound collection component inside the detection head 14 continuously captures the magnetic field change data around the detection surface and transmits the data to the internal control module of the equipment in real time for analysis and processing. The control module triggers the indicator light 12 to provide feedback on the corresponding status according to the magnitude of the magnetic field change: when the magnetic field change exceeds the preset threshold, such as ±5%, the indicator light 12 lights up red, indicating that there may be abnormal dark matter signals or magnetic field interference in the detection area; when the magnetic field change is within the threshold range, such as ±2%-±5%, the indicator light 12 lights up yellow, indicating that further verification is required; when the magnetic field change is below the lower limit threshold, such as ±2%, the indicator light 12 lights up green, indicating that the detection status is normal and the magnetic field distribution is stable. The entire testing process requires no professional data analysis; operators can quickly determine the results simply by observing the indicator light colors, thus reducing the difficulty of operation.

[0037] During continuous operation, the high-speed rotation of the steel ring assembly 3, permanent magnet assembly 6, heat pipe 4, and heat dissipation ring plate 5 generates continuous heat due to mechanical friction and electromagnetic effects. Especially under prolonged continuous use, such as exceeding 2 hours, or in scenarios with poor ventilation, heat easily accumulates inside the detection magnetic assembly 2, causing the temperature of the acrylic structural adhesive between the steel ring assembly 3 and the permanent magnet assembly 6 to gradually rise. When the temperature rises to 120℃, the acrylic structural adhesive loses its bonding stability, softening and peeling, resulting in a tiny gap, typically 0.1-0.5mm, between the steel ring assembly 3 and the permanent magnet assembly 6. If not addressed promptly, this can lead to magnetic field leakage and uneven distribution, ultimately reducing detection accuracy. At this time, the self-healing gel stored in the self-replenishing liquid installation groove 33 in the inner groove 32 of the steel ring assembly 3 is activated under the dual action of the centrifugal force generated by the rotation of the magnetic ring and the magnetic field of the permanent magnet assembly 6: the iron oxide powder in the gel is pulled by the magnetic field, guiding the gel to flow rapidly to the gap area, and achieving all-round penetration and filling through the irregular thread groove between the components, with a filling response time ≤3s; after filling, the gel is rapidly solidified under the centrifugal force and molecular force of the mechanical pressure component rotation, forming a dense adhesive layer, which quickly repairs the gap between the components, restores the structural integrity and coaxiality of the steel ring assembly 3 and the permanent magnet assembly 6, and ensures that the magnetic field detection accuracy fluctuation is controlled within ±2%. The entire repair process does not require machine shutdown or manual intervention, ensuring the continuity of the detection work.

[0038] Meanwhile, when the heat dissipation ring plate 5 rotates at high speed, such as ≥3000r / min, the heat dissipation slots 55 arrayed on the surface of its annular vertical plate 52 will cut the surrounding air, forming strong airflow disturbance; together with the rectangular slots 54 on the surfaces of the first annular plate 51 and the second annular plate 53, a complete airflow channel of "air intake-turbulence-heat dissipation-exhaust" is constructed: cold air enters the heat dissipation area through the rectangular slots 54, and after being disturbed by the heat dissipation slots 55, it comes into full contact with the surface of the steel ring assembly 3, quickly absorbing the surface heat of the steel ring assembly 3, and then exhausting the hot air through the rectangular slots 54 on the other side, realizing efficient convection heat dissipation and significantly reducing the surface temperature of the steel ring assembly 3.

[0039] The synchronously rotating heat pipe 4 plays an auxiliary role in heat dissipation: the axial flow guide ribs and annular turbulence protrusions on the inner wall of the heat pipe 4 guide the flow of the heat dissipation fluid containing ≥99.7% anhydrous ethanol. Simultaneously, the 50-200nm high-purity magnetic iron powder added inside the pipe rotates at high speed with the heat pipe 4 under the magnetic field traction of the permanent magnet assembly 6, creating strong agitation of the heat dissipation fluid, breaking the laminar flow state and forming turbulence, reducing the thermal boundary layer thickness, and increasing the heat exchange efficiency between the fluid and the heat pipe wall by more than 35%. Anhydrous ethanol, with its low boiling point of 78.4℃, quickly absorbs the conductive heat from the contact surface between the steel ring assembly 3 and the permanent magnet assembly 6 and vaporizes. This heat is transferred to the heat dissipation ring plate 5 through fluid circulation, and then dissipated to the external environment by the heat dissipation ring plate 5. Furthermore, the non-magnetic PPS / PEEK engineering plastic used in the heat pipe 4 and the polyethylene glycol dispersant inside the pipe ensure that the magnetic iron powder is uniformly dispersed and does not agglomerate, avoiding interference with the detection magnetic field and ensuring stable flow of the heat dissipation fluid.

[0040] Through the gap repair function of the self-healing gel and the synergistic heat dissipation effect of the heat dissipation ring plate 5 and the heat pipe 4, the working temperature of the steel ring assembly 3 and the permanent magnet assembly 6 can be effectively controlled below 80℃, preventing the acrylic structural adhesive from failing and falling off due to high temperature, ensuring the assembly stability between components and the uniformity of magnetic field distribution, so that the equipment can maintain detection accuracy without decay during long-term continuous operation such as more than 8 hours, and adapt to the needs of various complex detection scenarios.

[0041] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A modular splicing magnetic assembly for axion-like dark matter detection, characterized in that: The device includes a handheld detector (1), which has a detection magnetic assembly (2) fixedly installed inside. The detection magnetic assembly (2) includes a steel ring assembly (3), a heat pipe (4), a heat dissipation ring plate (5), and a permanent magnet assembly (6). The permanent magnet assembly (6) forms an annular cavity inside, and the steel ring assembly (3) is coaxially embedded in the annular cavity. The two are bonded by structural adhesive and fixed by a positioning structure. The steel ring assembly (3) is provided with a self-repairing liquid installation groove (33) inside, and the self-repairing liquid installation groove (33) stores self-healing gel; a number of heat-conducting pipes (4) are embedded in a ring array between the steel ring assembly (3) and the permanent magnet assembly (6), and the outer sides of the two are provided with through grooves, and the heat dissipation ring plate (5) is adapted to be embedded in the through grooves; The heat dissipation ring plate (5) is used to dissipate the working heat of the steel ring assembly (3) and the permanent magnet assembly (6), and the self-healing gel is used to fill the gap between the steel ring assembly (3) and the permanent magnet assembly (6).

2. The modular magnetic ring splicing magnetic assembly for axion-like dark matter detection according to claim 1, characterized in that: The detection magnetic component (2) also includes a magnetic component housing (23). The upper and lower ends of the magnetic component housing (23) are respectively fixedly connected to a first ring shell (22) and a second ring shell (24). The upper end of the first ring shell (22) is provided with an upper rubber block (21), and the lower end of the second ring shell (24) is provided with a lower rubber block (25). A support column (26) is provided between the first ring shell (22) and the second ring shell (24).

3. The modular magnetic ring splicing magnetic assembly for axion-like dark matter detection according to claim 2, characterized in that: A coil assembly (7) is provided between the first ring shell (22) and the second ring shell (24). The coil assembly (7) includes a coil (71) and a mating central shaft (72). The coil (71) is located between the two sets of support columns (26). The mating central shaft (72) is sleeved on the outside of the coil (71), and the outside of the mating central shaft (72) is in contact with the permanent magnet assembly (6).

4. The modular magnetic ring splicing magnetic assembly for axion-like dark matter detection according to claim 1, characterized in that: The steel ring assembly (3) includes a steel ring body (31), and a plurality of grooves (32) are arranged in an array on the inner side of the steel ring body (31). The self-filling liquid installation groove (33) is evenly distributed in the groove (32). A plurality of heat dissipation grooves (34) are provided on the outer side of the steel ring body (31). The heat dissipation grooves (34) correspond to the grooves on the outer side of the permanent magnet assembly (6) to form the through groove.

5. The modular magnetic ring splicing magnetic assembly for axion-like dark matter detection according to claim 4, characterized in that: The permanent magnet assembly (6) includes several sets of arc-shaped permanent magnets (61), which are spliced ​​together to form the annular cavity. The outer side of the arc-shaped permanent magnet (61) is provided with a protrusion (62), which is adapted to and snapped into the groove (32) of the steel ring (31). The middle part of the arc-shaped permanent magnet (61) is provided with a heat dissipation component mounting groove (63), which is connected to the heat dissipation air groove (34) to form the through groove.

6. The modular magnetic ring splicing magnetic assembly for axion-like dark matter detection according to claim 5, characterized in that: The heat dissipation ring plate (5) includes an annular vertical plate (52). The upper and lower ends of the annular vertical plate (52) are respectively fixedly connected to a first annular plate (51) and a second annular plate (53). The surface of the annular vertical plate (52) is provided with 8-12 sets of heat dissipation slots (55). The surfaces of the first annular plate (51) and the second annular plate (53) are provided with several rectangular slots (54). The heat dissipation ring plate (5) is adapted to be embedded in the through groove formed by the heat dissipation air slot (34) and the heat dissipation component mounting slot (63).

7. The modular magnetic ring splicing magnetic assembly for axion-like dark matter detection according to claim 1, characterized in that: The self-healing gel is composed of 70-85% base material, 5-25% iron oxide powder, 1-10% graphene powder, and 1-10% steel fiber; the base material includes 10-28% styrene-butadiene-styrene block copolymer, 40-60% alkane with 12 carbon atoms, and 2-12% castor oil; the iron oxide powder has a particle size of 3-300 nm, the graphene powder has a particle size of 500-900 nm, and the steel fiber / carbon fiber has a diameter of 50-100 nm and a length of 0.3-1 mm.

8. The modular magnetic ring splicing magnetic assembly for axion-like dark matter detection according to claim 1, characterized in that: The number of heat-conducting tubes (4) is 6-8, made of non-magnetic PPS or PEEK engineering plastic, with a tube wall thickness of 1-1.5mm. The inner wall is provided with 4 axial flow guide ribs and 5 sets of annular turbulence protrusions, and the two ends are tapered transition structures. The tube is filled with ≥99.7% anhydrous ethanol, and 1%-3% of 50-200nm magnetic iron powder and 0.1%-0.3% polyethylene glycol dispersant are added to the fluid volume.

9. The modular magnetic ring splicing magnetic assembly for axion-like dark matter detection according to claim 1, characterized in that: The handheld detector (1) includes a handheld handle (11), the upper end of which is fixedly connected to a detection head (14). The connection between the detection head (14) and the handheld handle (11) is provided with an indicator light (12) and a switch button (13). The detection head (14) has a cavity inside, and the detection magnetic component (2) is fixedly installed in the cavity. The detection probe (15) is provided on the outer side of the detection end of the detection magnetic component (2). The detection probe (15) is a magnetic field sensor used to collect the magnetic field change signal generated by the permanent magnet component (6) and transmit it to the control module. The control module triggers the indicator light (12) to provide feedback on the corresponding status according to the signal.

10. The modular magnetic ring splicing magnetic assembly for axion-like dark matter detection according to claim 9, characterized in that: The hand grip (11) has an ergonomically designed grip groove (16) on the outside and a screw cap (17) threaded to the other end. The hand grip (11) has a battery cavity inside, and a battery can be installed in the battery cavity to power the device. The steel ring assembly (3), permanent magnet assembly (6), and heat dissipation ring plate (5) are all independent detachable modules, which are connected to the magnetic assembly shell (23) by bolts or buckles.

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