Heat dissipation structure for double-bulb tube radiation source oil tank, radiation source oil tank and heat dissipation method

Abstract

The invention provides a heat dissipation structure for a double-bulb tube radiation source oil tank, a radiation source oil tank and a heat dissipation method, and relates to the technical field of medical imaging equipment heat dissipation, the heat dissipation structure comprises an oil tank body and a heat dissipation component, and the heat dissipation component is arranged on the outer surface of the oil tank body and used for forming a continuous heat transfer path. Heat generated in the oil tank main body is led out to the external environment; the heat dissipation component and the oil tank body are connected through an integrally-formed or detachable connecting component. The heat dissipation component comprises a plurality of fin structures extending outwards from at least one outer surface of the oil tank body. By means of the integrated or detachable heat dissipation fins, the integrated heat dissipation fins have the rapid heat dissipation effect and are high in integration degree, the detachable heat dissipation fins have the rapid heat dissipation effect and are convenient to produce, the oil tank can operate efficiently for a long time, and the service life of the whole oil tank body is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat dissipation of medical imaging equipment, in particular to a heat dissipation structure for a double-tube X-ray source oil tank, an X-ray source oil tank and a heat dissipation method. BACKGROUND

[0002] The double-tube integrated X-ray source is widely used in the fields of medical imaging and industrial detection, but a large amount of heat is generated when the two tubes work simultaneously or alternately. If the heat cannot be dissipated in time, the temperature of the insulation oil in the oil tank will continue to rise, which not only accelerates the aging of the oil and reduces the insulation performance, but also may damage the core components such as the tube and the transformer due to overheating, seriously affecting the service life of the equipment and the stability of imaging.

[0003] The existing heat dissipation methods for the X-ray source oil tank mainly rely on natural convection of the oil tank shell or simply add heat dissipation fins on the surface of the shell. The former has limited heat dissipation capacity and cannot meet the heat dissipation requirements of the double-tube high-power operation, and the latter can improve the heat dissipation area, but the connection between the heat dissipation fins and the oil tank body is mostly by gluing or welding, which has the problems of large thermal resistance, low connection reliability, easy to fall off or oxidize after long-term use, and cannot adapt to the more complex heat distribution characteristics of the double-tube oil tank. SUMMARY

[0004] To solve the above technical problems, the present application provides a heat dissipation structure for a double-tube X-ray source oil tank, an X-ray source oil tank and a heat dissipation method, which optimizes the structure design, connection method and distribution rule of the heat dissipation components, realizes efficient heat dissipation, reliable connection and precise adaptation of heat distribution, and at the same time considers the production convenience and maintenance flexibility.

[0005] According to one aspect of the present invention, a heat dissipation structure for a dual-tube X-ray source oil tank includes: an oil tank body, the oil tank body being a sealed structure including a housing and a cover plate, the housing being a rectangular cavity structure with one open end, a wall thickness of 8-12 mm, and an internal receiving cavity, wherein two X-ray tube mounting positions and corresponding transformer mounting positions are preset within the receiving cavity; the cover plate is detachably fixed to the open end of the housing body by bolts, and an oil-resistant sealing ring is provided between the two; a heat dissipation component, the heat dissipation component being a plurality of finned structures extending outward from the outer surface of the housing body, including a first fin and a second fin, the first fin being provided with Multiple fins are symmetrically arranged on the left and right outer surfaces of the housing. Multiple second fins are arranged on the front outer surface of the housing. The fin structure is fixed to the main body of the tank by integral molding or detachable connection. The thermally conductive enhancement structure is a thermally conductive silicone grease applied to the interface between the fin structure and the housing, and the thermal conductivity of the thermally conductive silicone grease is ≥1.5W / (m·K). The limiting and fixing structure includes multiple limiting posts set on the sidewalls of the first and second fins, and multiple limiting holes opened on the surface of the housing, and the limiting posts and limiting holes are clearance-fitted.

[0006] According to at least one embodiment of the present invention, the heat dissipation structure for the oil tank of a dual-tube X-ray source has the following characteristics: the height of the first fin is 30-50 mm and the thickness is 2-4 mm; the height of the second fin is 25-45 mm and the thickness is 2-3 mm.

[0007] According to at least one embodiment of the present invention, the heat dissipation structure for the oil tank of a dual-tube X-ray source has the cross-sectional shape of the first fin and the second fin being rectangular, trapezoidal, wavy, or needle-shaped.

[0008] According to at least one embodiment of the present invention, the heat dissipation structure for a dual-tube X-ray source tank has a fin structure whose distribution density on the outer surface of the tank is positively correlated with the heat load intensity of the corresponding internal region: the spacing between adjacent fins is 10-15 mm in the outer surface region corresponding to the X-ray tube mounting position and the transformer mounting position; and the spacing between adjacent fins is 20-25 mm in other low heat load regions.

[0009] According to at least one embodiment of the present invention, the heat dissipation structure for the oil tank of a dual-tube X-ray source is wherein the integrated molding connection method is that the tank body and the fin structure are integrally manufactured by die casting, extrusion or integral machining process, with no splicing gap between the two and a thermal resistance ≤0.02K / W; the detachable connection method is realized by connecting components, the connecting components including connecting pieces disposed at the edges of the first fin and the second fin, and bolts threaded through the surface of the connecting pieces, and the surface of the tank body is provided with threaded holes adapted to the bolts.

[0010] According to at least one embodiment of the present invention, the heat dissipation structure for the oil tank of a dual-tube X-ray source has a connecting plate thickness of 3-5 mm, and each connecting plate has two bolt holes; the bolts are of M6-M8 specifications.

[0011] According to at least one embodiment of the present invention, the heat dissipation structure for the oil tank of a dual-tube X-ray source has a diameter of 6-8 mm and a length of 10-15 mm, and is fitted with the limiting hole with an H7 / h6 clearance; the limiting post is made of the same thermally conductive material as the fin structure.

[0012] According to at least one embodiment of the present invention, a heat dissipation structure for a dual-tube X-ray source oil tank is provided, wherein the tank body is made of aluminum alloy or stainless steel, and the thermal grease is of high temperature resistance.

[0013] According to another aspect of the present invention, a dual-tube X-ray source oil tank includes the heat dissipation structure for a dual-tube X-ray source oil tank as described in any of the above embodiments, and further includes an adapter plate. The adapter plate is fixedly installed on the outer surface of the cover plate and is made of high-strength plastic or metal sheet with excellent insulation properties. It integrates standardized interfaces such as a high-voltage power socket, a low-voltage control signal connector, an oil circuit circulation quick connector, and a grounding terminal to realize centralized docking between the internal components of the oil tank and the external system, simplifying the installation and maintenance process.

[0014] According to another aspect of the present invention, a heat dissipation method for a dual-tube X-ray source oil tank, applied to the aforementioned dual-tube X-ray source oil tank, includes the following steps: S10: Tank pretreatment and component installation. Clean and inspect the tank to remove debris and oil stains to ensure it is free of defects. Install the double-tube assembly and transformer assembly to the preset installation positions and secure them with positioning pins and shock-absorbing pads. Connect the cables and insulate them to prevent high-voltage leakage. Inject filtered 25# transformer oil to ensure all components are completely submerged. Finally, seal and assemble the tank. S20: Heat dissipation component assembly. Depending on production requirements, either integrated molding or detachable assembly methods can be selected. The integrated molding method uses die casting and extrusion processes to make the housing and fin structure into one piece, and subsequent processing ensures that the heat dissipation surface is clean. The detachable assembly method includes steps such as pre-treatment of heat dissipation components, application of thermal grease, positioning and installation, and bolt tightening to ensure that the fin structure and housing fit tightly. S30: Heat conduction and dissipation. The heat generated by the dual-tube assembly is transferred sequentially through the tube shell, insulating oil, and housing to the finned structure. The insulating oil accelerates heat transfer through natural convection or forced air cooling, and the finned structure dissipates the heat to the external environment through convection heat exchange. At the same time, the temperature of the insulating oil is monitored in real time to ensure that the temperature is stable within a safe range. S40: Heat distribution adaptation and heat dissipation. It detects the heat load distribution on the outer surface of the tank and achieves dynamic temperature balance through a differentiated fin structure, keeping the overall temperature difference inside the tank within 10℃. Regular cleaning and maintenance of the heat dissipation components ensure long-term heat dissipation efficiency.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. Through multi-dimensional fin structure and differentiated distribution density design, the heat dissipation area is greatly expanded while accurately adapting to the non-uniform heat distribution of the dual-ball tube oil tank, ensuring sufficient heat dissipation in high heat load areas, and effectively solving the problems of insufficient heat dissipation capacity and poor heat distribution adaptability of traditional heat dissipation methods. 2. Two connection methods are provided: one-piece molding and detachable. The one-piece molding method has extremely low thermal resistance and reliable structure, making it suitable for mass production; the detachable method has low processing difficulty and convenient maintenance, making it suitable for small-batch production or upgrades, balancing heat dissipation efficiency and production and maintenance flexibility. 3. By combining thermal grease with the limiting and fixing structure, the contact thermal resistance is significantly reduced and the thermal conductivity is improved. At the same time, it ensures that the fin structure is accurately positioned and stably connected, avoiding loosening or falling off after long-term use. 4. The overall structure is compact and highly integrated. It achieves centralized connection with external systems through the adapter plate, simplifying the installation and maintenance process and providing a reliable guarantee for the long-term stable operation of the dual-tube X-ray source equipment. Attached Figure Description

[0016] Fig. 1 This is a front view according to an embodiment of the present invention; Fig. 2 This is a side view according to an embodiment of the present invention; Fig. 3 This is a top view according to an embodiment of the present invention; Fig. 4 This is a structural diagram showing the connection between the connecting component and the fuel tank body according to an embodiment of the present invention; Fig. 5 This is a partially disassembled structural diagram of the connecting component and the fuel tank body according to an embodiment of the present invention; Fig. 6 This is a structural diagram of the connecting component according to an embodiment of the present invention.

[0017] In the picture: 10. Box body; 20. First fin; 30. Second fin; 40. Connecting piece; 50. Bolts; 60. Limiting post; 70. Adapter board; 80. Limiting post. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. The technical solution of this invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Unless otherwise stated, the exemplary embodiments / exemplifications shown are to be understood as providing exemplary features of various details that provide ways in which the technical concept of the invention can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / exemplifications may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concept of the invention.

[0021] In the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0022] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, a mechanical connection, etc., and may or may not have intermediate components.

[0023] For descriptive purposes, the present invention may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0024] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0025] According to one embodiment of the present invention, a heat dissipation structure for an oil tank of a dual-tube X-ray source is provided, which is suitable for dual-tube integrated X-ray source equipment. Through efficient heat dissipation design and reliable connection method, the heat inside the oil tank is quickly discharged, ensuring long-term stable operation of the equipment.

[0026] like Figs. 1 to 3As shown, the heat dissipation structure for the oil tank of a dual-tube X-ray source includes a tank body. The tank body, serving as the core mounting and sealing carrier, is made of high-strength metal materials such as aluminum alloy and stainless steel, possessing good mechanical strength, thermal conductivity, and corrosion resistance. The tank body includes a housing 10 and a cover plate 60. The housing 10 is a rectangular cavity structure with one open end, with a wall thickness of 8-12mm. Its interior forms a receiving cavity, within which are pre-set two X-ray tube mounting positions and corresponding transformer mounting positions, respectively used to fix the two X-ray tubes and their associated high-voltage transformer and filament transformer, achieving integrated installation of the dual-tube assembly. The cover plate 60 is detachably fixed to the open end of the housing 10 by bolts. An oil-resistant sealing ring is provided between the two, forming a sealed receiving cavity to prevent leakage of the internal insulating oil and to isolate moisture, dust, and other impurities from the external environment.

[0027] The outer surface of the housing 10 is provided with heat dissipation components, which are multiple outwardly extending fin structures, including first fins 20 and second fins 30. Multiple first fins 20 are evenly arranged along the height direction of the housing 10, symmetrically positioned on the left and right outer surfaces of the housing 10, with a height of 30-50 mm and a thickness of 2-4 mm. The spacing between adjacent fins is designed according to the heat load. Multiple second fins 30 are evenly arranged along the width direction of the housing 10, positioned on the front outer surface of the housing 10, corresponding to the ray emission direction, with a height of 25-45 mm and a thickness of 2-3 mm. The first fins 20 and second fins 30 together form a multi-dimensional heat dissipation array, significantly increasing the contact area between the tank body and the air by 5-8 times compared to a finless structure, providing a structural basis for rapid heat dissipation.

[0028] The cross-sectional shape of the fin structure can be selected according to actual heat dissipation requirements and airflow environment, such as rectangular, trapezoidal, wavy, or needle-shaped: Rectangular cross-section fins have high strength, are easy to process, and can provide a stable heat dissipation area; trapezoidal cross-section fins can guide airflow smoothly, reduce airflow resistance by 20%-30% compared to rectangular cross-sections, and improve natural convection efficiency; wavy cross-section fins can enhance airflow turbulence, disrupt the boundary layer on the fin surface, and improve the convective heat transfer coefficient by 15%-25% compared to rectangular cross-sections; needle-shaped cross-section fins maximize the surface area to volume ratio with a discrete columnar structure, with a specific surface area ≥600m² / m³, suitable for scenarios where airflow can penetrate in multiple directions. Regardless of the cross-sectional shape used, the fin structure maintains a good thermally conductive connection with the tank body, ensuring that heat can be quickly conducted from the tank body to the fin tips.

[0029] To accommodate the non-uniform heat distribution characteristics inside the dual-tube oil tank, the fin structure on the outer surface of the tank 10 employs a differentiated design, meaning the distribution density is positively correlated with the heat load intensity of the corresponding internal region. Since the heat inside the tank primarily originates from the two tubes and their associated transformer assembly, accounting for ≥80% of the heat load, the outer surface regions of the tank 10 corresponding to these high-heat-load components, such as the sides corresponding to the tube mounting positions and the frontal regions corresponding to the transformer mounting positions, exhibit a higher fin structure distribution density and smaller spacing between adjacent fins, for example, 10-15mm, to enhance heat dissipation capacity in these areas. Conversely, other low-heat-load regions on the outer surface of the tank 10, accounting for <20% of the heat load, have a relatively lower fin structure distribution density and larger spacing between adjacent fins, for example, 20-25mm. This approach satisfies basic heat dissipation requirements while avoiding heat dissipation redundancy, achieving a balance between heat dissipation efficiency and material cost.

[0030] The fin structure provides two connection methods with the fuel tank body to adapt to different production scenarios and maintenance needs: One method is the integrated molding connection, where the fin structure and the tank body 10 are integrally manufactured through die casting, extrusion, or integral machining. This connection method eliminates the seams between the fin structure and the tank body, resulting in extremely low thermal resistance (≤0.02K / W). Heat can be directly conducted from the tank body to the fin structure, achieving extremely high heat dissipation efficiency. Simultaneously, the integrated structure possesses excellent mechanical strength and connection reliability, preventing fin detachment or delamination issues during long-term use. This method is suitable for mass production scenarios and can reduce unit costs through large-scale processing.

[0031] The second method is a detachable connection, which uses specialized connecting components to fix the fin structure to the main body of the fuel tank.

[0032] like Figs. 4 to 6 As shown. The connecting components include connecting plates 40 and bolts 50. The connecting plates 40 are sheet-like structures with a thickness of 3-5mm, and are fixedly disposed at both ends of the first fin 20 and the second fin 30. Each connecting plate 40 has two bolt holes. The outer surface of the housing 10 has corresponding screw holes 110 adapted to the bolts 50. During installation, the mounting surface of the fin structure is first fitted against the outer surface of the housing 10, aligning the bolt holes on the connecting plates 40 with the screw holes 110 on the housing 10. Then, the bolts 50 are passed through the bolt holes and screwed into the screw holes 110 and tightened to complete the fixing of the fin structure. This detachable connection method reduces the processing difficulty, eliminates the need for complex integrated molding molds, and is suitable for small-batch production or upgrading existing equipment. It also facilitates the individual replacement of damaged fin structures during subsequent maintenance, reducing maintenance costs.

[0033] To further improve the installation stability and thermal conductivity of the detachable finned structure, this invention also includes a thermally enhanced structure and a limiting and fixing structure. The thermally enhanced structure is a thermally conductive silicone grease applied to the mounting surface of the finned structure. This grease has excellent thermal conductivity and flowability; a high-temperature resistant product with a thermal conductivity ≥1.5 W / (m·K) is selected. During installation, it can fill the tiny gaps and uneven areas between the finned structure and the outer surface of the housing 10 under pressure, replacing the air in the gaps. Air has a thermal conductivity of only 0.023 W / (m·K), which is extremely low, significantly reducing contact thermal resistance by 60%-70% compared to when there is no thermally conductive silicone grease, allowing heat to be transferred more smoothly from the tank body to the finned structure. The limiting and fixing structure includes multiple limiting posts 80 disposed on the sidewalls of the first fin 20 and the second fin 30, and multiple limiting holes 120 opened on the outer surface of the housing 10. The limiting posts 80 have a diameter of 6-8 mm and a length of 10-15 mm, and are fitted with the limiting holes 120 with an H7 / h6 clearance fit. During installation, the limiting posts 80 are first inserted into the corresponding limiting holes 120 to achieve rapid positioning of the fin structure, ensuring that the bolt holes on the connecting piece 40 are precisely aligned with the bolt holes 110 of the housing 10, simplifying the installation operation; at the same time, the limiting posts 80 can limit the circumferential rotation and axial sway of the fin structure after installation, improving connection stability; in addition, the limiting posts 80 are made of the same thermally conductive material as the fin structure, such as aluminum alloy, which can assist in heat conduction and further improve the heat dissipation effect.

[0034] like Figs. 1 to 3 As shown, this invention also discloses a dual-tube X-ray source oil tank, including the aforementioned heat dissipation structure. An adapter plate 70 is fixedly installed on the outer surface of the cover plate 60. The adapter plate 70 is made of high-strength plastic or metal sheet with excellent insulation properties and integrates various standardized interfaces, including a high-voltage power socket, a low-voltage control signal connector, an oil circulation quick connector, and a grounding terminal. All outgoing components inside the oil tank, such as the transformer power line, the X-ray tube control line, and the sensor signal line, are centrally connected to the corresponding terminals on the inner side of the adapter plate 70. Then, through the standardized interfaces on the outer side of the adapter plate 70, it quickly and reliably connects to the external system's high-voltage generator cabinet, equipment control system, and cooling circulation unit. This integrated interface design simplifies the connection process between the oil tank and the external system, reduces the number of interfaces, lowers the risk of insulating oil leakage, and facilitates equipment installation, commissioning, and maintenance.

[0035] This invention also discloses a heat dissipation method for a dual-tube X-ray source oil tank, based on the aforementioned dual-tube X-ray source oil tank, specifically including the following detailed steps: S10: Fuel Tank Pretreatment and Component Installation S101: Cleaning and inspection of the main body of the fuel tank. Use high-pressure airflow (pressure 0.3-0.5MPa) to blow the inside of the tank body 10 to remove residual metal shavings, dust and other debris. Then wipe the inner wall and mounting surface of the tank body 10 with anhydrous ethanol to ensure that the surface is free of oil and water stains. After drying, check that there are no defects such as deformation or cracks inside the tank body 10, and that the screw holes 110 and limit holes 120 are not blocked. S102: Internal component positioning and installation: Hoist the two X-ray tubes to the X-ray tube mounting positions inside the housing 10, and fix them with positioning pins and bolts to ensure that the X-ray emission direction of the X-ray tubes is consistent with the preset direction, with a positioning accuracy error ≤ ±0.5mm; Install the high-voltage transformer and filament transformer to the corresponding transformer mounting positions, and fix them with shock-absorbing pads and bolts. The shock-absorbing pads are 5-8mm thick and are used to absorb vibrations during equipment operation to prevent components from loosening. S103: Cable connection and insulation treatment. According to the preset wiring plan, connect the ball tube to the transformer cable joint. Wrap the cable connection with insulating tape with ≥3 layers to ensure high voltage insulation performance. Avoid direct friction between the cable and the inner wall of the enclosure during the wiring process. Install insulating sheaths at the contact points. S104: Insulating oil injection. 25# transformer oil is selected as the insulating medium. Before injection, the insulating oil is filtered (filtration accuracy ≤5μm) to remove impurities and moisture. Insulating oil is injected into the tank 10 at a rate of ≤5L / min. During injection, internal air is discharged through the exhaust valve at the top of the tank 10 to prevent air bubbles from affecting thermal conductivity and insulation performance. After injection, the insulating oil level is 10-15mm higher than the highest point of the internal components to ensure all components are completely submerged. S105: For the sealed assembly of the oil tank, the oil-resistant sealing ring is embedded into the sealing groove at the open end of the housing 10 to ensure that the sealing ring is not twisted or damaged; the cover plate 60 is placed on the housing 10, and the fixing bolts are tightened in a symmetrical cross sequence. The bolt tightening torque is controlled at 8-12 N·m to ensure that the cover plate 60 and the housing 10 are sealed and fit tightly without leakage of insulating oil.

[0036] S20: Heat dissipation component assembly Choose between integrated molding or detachable heat dissipation component assembly methods based on production needs and usage scenarios: Method 1: Assembly of integrated molded heat dissipation components S201a: Mold design and manufacturing. Based on the size and distribution density of the fin structure and the shape of the box 10, design the die casting mold. The surface roughness of the mold cavity Ra≤0.8μm ensures that the fin surface is smooth after molding. S202a: Integrated molding process, heating 6061 aluminum alloy ingots to a molten state of 650-700℃, injecting them into a die-casting mold, holding pressure for 10-15 seconds, cooling to room temperature, opening the mold and taking out the molded part; S203a: Subsequent processing: remove the gating gates and burrs from the molded parts, sand the surface of the fins with sandpaper to remove the oxide layer, and ensure that the heat dissipation surface is clean and free of impurities; perform precision machining on the mounting surface of the housing 10, screw holes 110, and other parts to ensure assembly accuracy.

[0037] Method 2: Assembly of detachable heat dissipation components S201b: Pre-treatment of heat dissipation components: Check that the surfaces of the first fin 20 and the second fin 30 are free from defects such as deformation, cracks, and oxide scale; check that the bolt holes of the connecting piece 40 are free from burrs; check that the limiting post 80 is free from bending; wipe the mounting surface of the fins and the corresponding mounting area of ​​the housing 10 with anhydrous ethanol, and let them dry before use. S202b: Apply thermal grease. Use high-temperature resistant thermal grease with a thermal conductivity ≥1.5W / (m・K). Apply it evenly to the fin mounting surface using a scraper. The coating thickness is 0.1-0.3mm. Ensure that the coating area is fully covered, without bubbles or omissions. S203b: Positioning installation: Align the fin structure with the preset installation area of ​​the housing 10, so that the limiting post 80 and the limiting hole 120 are precisely aligned, and slowly insert the limiting post 80 until it fits the installation surface. At this time, the coaxiality error between the bolt hole on the connecting piece 40 and the screw hole 110 of the housing 10 is ≤ ±0.2mm. S204b: Bolt tightening. Tighten M6-M8 bolts 50 in a symmetrical, cross-tightening sequence. The initial tightening torque is 4-6 N·m. After all bolts are initially tightened, increase the torque to 8-10 N·m in sequence to ensure that the fin mounting surface is in close contact with the outer surface of the housing 10 and that the thermal grease is evenly filled in the contact gap.

[0038] S30: Heat conduction and dissipation S301: Heat release from the heat source. When the dual-tube assembly is working, electrons bombard the anode target surface to generate heat. The target surface temperature rises rapidly and the heat is transferred to the tube shell through heat conduction. The heat transfer rate is positively correlated with the thermal conductivity of the tube shell material (copper alloy). S302: Insulating oil heat transfer. The heat from the outer shell of the tube is transferred to the surrounding insulating oil, causing the local temperature of the insulating oil to rise, forming a density difference, which in turn generates natural convection. The convection velocity is 0.05-0.1m / s. The high-temperature insulating oil transfers heat to the inner wall of the enclosure 10. If the equipment is equipped with a forced air cooling system, an external fan can generate airflow, with the airflow velocity controlled at 2-3m / s, to accelerate the convective heat transfer of the insulating oil. S303: Heat conduction of the enclosure. After the inner wall of the enclosure 10 receives heat, it transfers the heat to the outer wall of the enclosure 10 through heat conduction. Since the enclosure 10 is made of 6063 aluminum alloy with a thermal conductivity of ≥200W / (m・K), there is no significant temperature decay in the conduction of heat within the enclosure wall. S304: Finned heat dissipation, heat from the outer wall of the housing 10 is transferred to the finned structure: In the integrated molding structure, heat is directly conducted from the housing 10 to the root of the fins, and then diffuses towards the end along the height of the fins, with a thermal resistance ≤0.02K / W; In the detachable structure, heat is transferred to the fins through thermal grease, with a thermal resistance ≤0.05K / W; The fins exchange heat with the air through convection. Under natural convection, the heat transfer coefficient is 10-15W / (m²・K), and under forced air cooling, the heat transfer coefficient increases to 30-40W / (m²・K), and the heat is finally dissipated to the external environment; S305: Heat dissipation status monitoring. The temperature of the insulating oil is monitored in real time by a temperature sensor installed inside the enclosure 10. The temperature sensor has a measurement accuracy of ±0.5℃. When the temperature exceeds 55℃, the forced air cooling system can be activated or the working power of the X-ray tube can be adjusted to ensure that the temperature is stable within a safe range.

[0039] S40: Thermal Distribution Adaptive Heat Dissipation S401: Heat load distribution detection. After the main body of the tank is assembled, the temperature distribution on the outer surface of the tank 10 is detected by simulating the working state of the dual PV tubes and using an infrared thermal imager. This determines the high heat load area (temperature ≥ 45℃) and other low heat load areas (temperature < 45℃) corresponding to the PV tube installation position and the transformer installation position. S402: Differentiated heat dissipation adjustment. The fin distribution density in the high heat load area is 10-15mm (distance between adjacent fins), which quickly dissipates a large amount of heat through dense fins and reduces local temperature; the fin distribution density in the low heat load area is 20-25mm, which reduces material consumption while meeting basic heat dissipation requirements. S403: Dynamic temperature balance. When the two tubes work alternately, the high heat load area changes with the switching of the tube working state. Since the fin structure has been designed differently according to the preset heat distribution, it can respond quickly to temperature changes. Through the synergistic effect of the fins in different areas, the overall temperature difference inside the oil tank is controlled within 10℃, ensuring the stability of the insulating oil performance and the core components are not affected by local overheating. S404: Long-term heat dissipation maintenance. Every 3000 hours of operation, clean the fin structure to remove dust, oil and other debris from the surface to avoid affecting heat dissipation efficiency. For detachable fins, check the condition of the thermal grease. If it is dry or cracked, reapply the thermal grease.

[0040] The heat dissipation principle and workflow of this invention are as follows: When the dual-tube assembly is working, the heat generated by the anode target surface is transferred to the insulating oil through heat conduction. The insulating oil transfers the heat to the inner wall of the housing 10 through natural convection. The housing 10 transfers the heat to the finned structure on the outer surface through heat conduction. The finned structure expands the contact area with the air and dissipates the heat to the external environment through natural convection or forced air cooling, forming a complete heat transfer path. Due to the differentiated distribution density design of the finned structure, it can accurately adapt to the non-uniform heat distribution of the dual-tube oil tank, ensuring sufficient heat dissipation in high heat load areas and keeping the overall temperature stable within a safe range. The integrated or detachable connection method meets the needs of different production scenarios, taking into account both heat dissipation efficiency and maintenance flexibility.

[0041] The heat dissipation structure, source oil tank, and heat dissipation method for a dual-tube X-ray source described in this invention expand the heat dissipation area through a multi-dimensional fin structure, adapt to the thermal distribution characteristics of the dual-tube X-ray source through differentiated distribution density, balance heat dissipation efficiency and production and maintenance flexibility through both integrated and detachable connection methods, and improve thermal conductivity and connection stability through thermal grease and limiting structures. This structure offers high heat dissipation efficiency, reliable connection, and strong adaptability, effectively solving problems such as insufficient heat dissipation capacity, poor connection stability, and unsuitable thermal distribution adaptation in existing technologies, providing a reliable guarantee for the long-term stable operation of dual-tube X-ray source equipment.

[0042] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A heat dissipation structure for an oil tank of a dual-tube X-ray source, characterized in that, include: The main body of the oil tank is a sealed structure, including a tank body (10) and a cover plate (60). The tank body (10) is a rectangular cavity structure with one open end and a wall thickness of 8-12mm. It forms an internal cavity, and two pre-set tube mounting positions and corresponding transformer mounting positions are provided in the cavity. The cover plate (60) is detachably fixed to the open end of the tank body (10) by bolts, and an oil-resistant sealing ring is provided between the two. The heat dissipation component is a plurality of fin structures extending outward from the outer surface of the housing (10), including a first fin (20) and a second fin (30). The first fin (20) is provided in a plurality of fins and is symmetrically arranged on the left and right outer surfaces of the housing (10). The second fin (30) is provided in a plurality of fins and is arranged on the front outer surface of the housing (10). The fin structure is fixed to the main body of the oil tank by means of integral molding or detachable connection. The thermally conductive enhanced structure is a thermally conductive silicone grease applied to the contact interface between the fin structure and the housing (10), and the thermal conductivity of the thermally conductive silicone grease is ≥1.5W / (m·K). The limiting and fixing structure includes multiple limiting posts (80) disposed on the sidewalls of the first fin (20) and the second fin (30), and multiple limiting holes (120) opened on the surface of the housing (10), wherein the limiting posts (80) and the limiting holes (120) are clearance-fitted.

2. The heat dissipation structure for the oil tank of a dual-tube X-ray source according to claim 1, characterized in that, The first fin (20) has a height of 30-50 mm and a thickness of 2-4 mm; the second fin (30) has a height of 25-45 mm and a thickness of 2-3 mm.

3. The heat dissipation structure for the oil tank of a dual-tube X-ray source according to claim 1, characterized in that, The cross-sectional shape of the first fin (20) and the second fin (30) is rectangular, trapezoidal, wavy, or needle-shaped.

4. The heat dissipation structure for the oil tank of a dual-tube X-ray source according to claim 1, characterized in that, The distribution density of the fin structure on the outer surface of the housing (10) is positively correlated with the heat load intensity of the corresponding internal area: the distance between adjacent fins is 10-15mm in the outer surface area corresponding to the tube mounting position and the transformer mounting position; and the distance between adjacent fins is 20-25mm in other low heat load areas.

5. The heat dissipation structure for the oil tank of a dual-tube X-ray source according to claim 1, characterized in that, The integrated connection method is that the box (10) and the fin structure are integrally manufactured by die casting, extrusion or integral machining process, with no splicing gap between the two and thermal resistance ≤0.02K / W; the detachable connection method is realized by connecting components, which include connecting pieces (40) set at the edges of the first fin (20) and the second fin (30) and bolts (50) threaded through the surface of the connecting pieces (40), and the surface of the box (10) is provided with screw holes (110) that are compatible with the bolts (50).

6. The heat dissipation structure for the oil tank of a dual-tube X-ray source according to claim 5, characterized in that, The thickness of the connecting piece (40) is 3-5mm, and each connecting piece (40) has two bolt holes; the bolt (50) is of M6-M8 specification.

7. The heat dissipation structure for the oil tank of a dual-tube X-ray source according to claim 1, characterized in that, The limiting post (80) has a diameter of 6-8 mm and a length of 10-15 mm, and is fitted with the limiting hole (120) with an H7 / h6 clearance. The limiting post (80) is made of the same heat-conducting material as the fin structure.

8. The heat dissipation structure for the oil tank of a dual-tube X-ray source according to claim 1, characterized in that, The housing (10) is made of aluminum alloy or stainless steel, and the thermal grease is of high temperature resistance.

9. A dual-tube X-ray source oil tank, characterized in that, The heat dissipation structure for the oil tank of a dual-tube X-ray source, as described in any one of claims 1-8, further includes an adapter plate (70), which is fixedly installed on the outer surface of the cover plate (60) and integrates a high-voltage power socket, a low-voltage control signal connector, an oil circulation quick connector and a grounding terminal.

10. A heat dissipation method for the oil tank of a dual-tube X-ray source, characterized in that, The application of the dual-tube X-ray source oil tank according to claim 9 includes the following steps: S10: Tank pretreatment and component installation, including cleaning and inspecting the tank (10), installing the double-tube assembly and transformer assembly, connecting cables and insulating them, injecting insulating oil, and sealing and assembling the tank. S20: Heat dissipation component assembly. The fin structure can be assembled in an integrated molding or detachable manner. Detachable assembly includes pre-treatment of heat dissipation components, application of thermal grease, positioning and installation, and bolt tightening. S30: Heat conduction and heat dissipation. The heat generated by the double tube assembly is transferred to the finned structure through the tube shell, insulating oil, and box (10) in sequence. The finned structure dissipates the heat to the external environment through convection heat transfer. The temperature of the insulating oil is monitored in real time. S40: Heat distribution adapts to heat dissipation, detects the heat load distribution on the outer surface of the enclosure (10), achieves dynamic temperature balance through differentiated fin structure, and regularly maintains heat dissipation components.

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