Anode heat dissipation structure based on an x-ray tube and x-ray tube

Abstract

The utility model provides a kind of anode heat dissipation structure and X ray tube based on X ray tube, it is spaced apart and set in anode module outside division sleeve, division sleeve outside is also spaced apart and provided with protective cover, to form first heat dissipation passage between anode module and division sleeve, second heat dissipation passage is formed between division sleeve and protective cover, second heat dissipation passage and first heat dissipation passage are on the top of division sleeve window communication, first heat dissipation passage can further pass through division sleeve and heat is transferred into second heat dissipation passage, increase the heat export efficiency, can effectively improve heat dissipation efficiency. The utility model provides anode heat dissipation structure based on X ray tube by the setting of inside and outside double-layer heat dissipation passage, can effectively improve the export efficiency of internal heat, improve heat dissipation efficiency, provide convenience for the power promotion of X ray tube.

Description

Technical Field

[0001] This utility model relates to the field of X-ray tube technology, and in particular to an anode heat dissipation structure based on an X-ray tube and an X-ray tube. Background Technology

[0002] During the operation of an X-ray tube, the bombardment of the anode target by cathode electrons generates a large amount of heat, causing the target surface temperature to rise.

[0003] The anode target is usually made of tungsten, which has low thermal conductivity and the heat generated cannot be conducted away quickly. Heat dissipation is usually aided by coating it with oxygen-free copper and a liquid-sealed cover is installed on the outside to allow coolant to be introduced for liquid cooling to ensure heat dissipation efficiency.

[0004] However, compared to liquid-sealed covers that are usually made of metal, although coolant has a stronger heat absorption capacity, its thermal conductivity is low, which is not conducive to the release of heat absorbed by the coolant. Since X-ray tubes usually operate under high pressure and high energy conditions, this increases the generation and accumulation of heat, making the liquid cooling efficiency of existing technologies still insufficient and limiting the power of X-ray tubes. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an anode heat dissipation structure and an X-ray tube based on an X-ray tube, so as to solve the problem that the anode liquid cooling heat dissipation efficiency of the X-ray tube in the prior art is limited, which restricts the power of the X-ray tube.

[0006] This utility model provides an anode heat dissipation structure based on an X-ray tube. The anode module of the X-ray tube includes an anode fixed on an anode flange, a beryllium window and a circumferential target disposed on the anode, and the anode heat dissipation structure includes: A heat dissipation flange is fixedly mounted on the anode flange and sleeved on the outside of the anode module. The bottom end of the heat dissipation flange is sealed and matched with the anode. A partition sleeve is sealed and fixed on the heat dissipation flange. The partition sleeve covers the outside of the anode module and is spaced and matched with the anode module to form a first heat dissipation channel between the partition sleeve and the anode module. A protective cover is sealed and fixed on the heat dissipation flange and covers the outside of the partition sleeve, and is spaced and matched with the partition sleeve to form a second heat dissipation channel between the protective cover and the partition sleeve. The second heat dissipation channel and the first heat dissipation channel communicate with each other through an opening at the top of the partition sleeve. The heat dissipation flange is further provided with a first channel and a second channel, which are respectively connected to the first heat dissipation channel and the second heat dissipation channel, and connected to the outside to transport the heat dissipation medium.

[0007] Optionally, the anode heat dissipation structure further includes: a partition cover, which is disposed on the top of the partition sleeve. The partition cover is a T-shaped structure similar to the morphology of the upper surface of the circumferential target, and a portion of the partition cover extends into the groove structure on the upper surface of the circumferential target. A connecting channel is provided in the center of the partition cover.

[0008] Optionally, a support block is also provided protruding from the top of the partition cover.

[0009] Optionally, the inner bore sidewall of the heat dissipation flange is provided with a multi-stage stepped structure, and the partition sleeve and the protective cover are fixed to the inner bore sidewall of the heat dissipation flange and positioned on the corresponding steps of the multi-stage stepped structure.

[0010] Optionally, the protective cover is threadedly fixed to the heat dissipation flange, and the partition sleeve is pressed against the corresponding step of the multi-stage stepped structure by the partition cover.

[0011] Optionally, a first sealing ring is provided between the partition sleeve and the contact side wall of the heat dissipation flange.

[0012] Optionally, an extension structure is provided above the threaded area of ​​the protective cover, and a second sealing ring is provided between the extension structure and the corresponding step surface of the multi-stage step structure.

[0013] Optionally, a third sealing ring is provided between the mating surfaces of the heat dissipation flange and the anode flange.

[0014] Optionally, the mating surfaces of the heat dissipation flange and the anode flange are fitted together by a mating platform and a mating groove, wherein the depth of the mating groove is less than the height of the mating platform, the mating groove fits snugly against the side wall of the mating platform, and the third sealing ring is disposed between the mating surfaces of the mating groove and the mating platform.

[0015] Another aspect of this invention provides an X-ray tube, including the aforementioned anode heat dissipation structure based on an X-ray tube.

[0016] The X-ray tube-based anode heat dissipation structure provided by this invention features spacer sleeves spaced outside the anode module, with protective covers also spaced outside the spacer sleeves. This forms a first heat dissipation channel between the anode module and the spacer sleeves, and a second heat dissipation channel between the spacer sleeves and the protective covers. The second and first heat dissipation channels are connected by an opening at the top of the spacer sleeves. The first heat dissipation channel can further transfer heat to the second heat dissipation channel through the spacer sleeves, increasing heat dissipation efficiency and effectively improving heat dissipation efficiency. This X-ray tube-based anode heat dissipation structure, with its double-layered heat dissipation channels, improves the efficiency of internal heat dissipation, facilitating power increases for the X-ray tube. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of the anode heat dissipation structure in an embodiment of this utility model; Figure 2 This is a schematic diagram of the external structure of the anode heat dissipation structure in an embodiment of this utility model; Figure 3 This is a schematic diagram showing the arrangement of the first channel of the anode heat dissipation structure in an embodiment of the present invention; Figure 4 This is a schematic diagram showing the arrangement of the second channel of the anode heat dissipation structure in an embodiment of the present invention; Figure 5 This is a schematic diagram of the partition cover of the anode heat dissipation structure in an embodiment of this utility model.

[0018] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Compared to liquid-sealed covers, which are typically made of metal, coolants, while having a stronger heat absorption capacity, have a lower thermal conductivity, which is not conducive to the release of heat absorbed by the coolant. X-ray tubes typically operate under high pressure and high energy conditions, which increases heat generation and accumulation, making the current liquid cooling technology still insufficient in terms of heat dissipation efficiency and limiting the power of the X-ray tube.

[0023] To address the issue of insufficient heat dissipation efficiency in existing liquid cooling technologies, this invention provides an anode heat dissipation structure based on an X-ray tube. Separating sleeves are spaced outside the anode module, and protective covers are also spaced outside the separating sleeves, thus forming a first heat dissipation channel between the anode module and the separating sleeves, and a second heat dissipation channel between the separating sleeves and the protective covers. The second and first heat dissipation channels are connected by an opening at the top of the separating sleeves. The first heat dissipation channel can further transfer heat to the second heat dissipation channel through the separating sleeves, increasing heat dissipation efficiency and effectively improving heat dissipation efficiency.

[0024] Specifically, please refer to Figure 1 and Figure 2 The diagram shows the main structure of the anode heat dissipation structure in this embodiment. The corresponding X-ray tube anode module includes an anode 11 fixed on the anode flange 10, a beryllium window 12 and a circumferential target 13 disposed on the anode 11. The anode 11 is made of oxygen-free copper and can be used for guiding the electron beam. The beryllium window 12 is arranged between the anode 11 and the circumferential target 13, and the lightweight beryllium material facilitates the emission of X-rays excited by the circumferential target 13. The beryllium window 12 is also sealed to the anode 11 and the circumferential target 13 to provide a vacuum-sealed environment. The anode module is generally fixed by brazing.

[0025] The anode heat dissipation structure mainly includes a heat dissipation flange 210, a partition sleeve 220, and a protective cover 230. The heat dissipation flange 210 is fixed on the anode flange 10 by screws and is sleeved on the outside of the anode module. The bottom end of the heat dissipation flange 210 is sealed and matched with the anode 11.

[0026] The partition sleeve 220 is sealed and fixed on the heat dissipation flange 210. The partition sleeve 210 covers the anode module and is spaced and matched with the anode module to form a first heat dissipation channel 201 between the partition sleeve 210 and the anode module.

[0027] The protective cover 230 is sealed and fixed on the heat dissipation flange 210 and covers the outside of the partition sleeve 220, and is spaced and matched with the partition sleeve 220 to form a second heat dissipation channel 202 between the protective cover 230 and the partition sleeve 220. The second heat dissipation channel 202 and the first heat dissipation channel 201 are connected by an opening at the top of the partition sleeve 220.

[0028] The heat dissipation flange 210 is also provided with a first channel 203 and a second channel 204. The first channel 203 and the second channel 204 are respectively connected to the first heat dissipation channel 201 and the second heat dissipation channel 202, and are connected to the outside to transport the heat dissipation medium.

[0029] like Figure 2 and Figure 3 As shown, the first channel 203 and the second channel 204 are staggered in the circumferential direction, and the second heat dissipation channel 202 is arranged outside the first heat dissipation channel 201. Correspondingly, the second channel 204 is arranged at an angle, and the first channel 203 is arranged horizontally.

[0030] The arrangement of the first channel 203, the second channel 204, and the input / output can be flexibly adjusted.

[0031] For example, in one instance, the second channel 204 is the input channel and the first channel 203 is the output channel. The heat dissipation medium enters the second heat dissipation channel 202 through the second channel 204 and exchanges heat with the circumferential target 13 first through the top, and then exchanges heat with the beryllium window 12 and the anode 11 through the first heat dissipation channel 201.

[0032] Compared to the heat transfer within the heat dissipation medium, the heat absorbed by the heat dissipation medium in the first heat dissipation channel 201 can be conducted to the partition sleeve 220 more quickly. The outside of the partition sleeve 220 is the second heat dissipation channel 202, through which the heat in the first heat dissipation channel 201 can be further transferred to the heat dissipation medium in the second heat dissipation channel 202, thereby improving the heat dissipation efficiency.

[0033] The heat in the first heat dissipation channel 201 is transferred to the heat dissipation medium in the second heat dissipation channel 202. Although this increases the temperature of the heat dissipation medium input to the circumferential target 13, the input temperature can be kept lower than the temperature of the circumferential target 13 by controlling the flow rate and volume of the heat dissipation medium according to the specific heat dissipation requirements, thus ensuring the heat dissipation effect.

[0034] In another example, the first channel 203 is an input channel and the second channel 204 is an output channel. The heat dissipation medium is input through the first heat dissipation channel 201 and output through the second heat dissipation channel 202. The heat absorbed in the first heat dissipation channel 201 is further transferred to the second heat dissipation channel 202 and discharged directly through the second heat dissipation channel 202.

[0035] Compared to the commonly used solution in the prior art of increasing the width of the heat dissipation channel to increase the flow rate of the heat dissipation medium, in the case of the same total width of the heat dissipation channel, the first heat dissipation channel 201 and the second heat dissipation channel 202 of this application are connected by a partition sleeve 220. The heat dissipation medium in the heat dissipation channel can more easily diffuse to the outer heat dissipation medium, improve the heat absorption efficiency of the heat dissipation medium, and thus improve the final heat dissipation efficiency.

[0036] To improve the heat dissipation efficiency of the circumferential target 13, in this embodiment, the anode heat dissipation structure further includes a partition cover 240 covering the top of the partition sleeve 220. The partition cover 240 is a T-shaped structure with a similar morphology to the upper surface of the circumferential target 13, and a portion of the partition cover 240 extends into the groove structure on the upper surface of the circumferential target 13. A connecting channel is provided in the center of the partition cover 240. Through the arrangement of the partition cover 240, it can be ensured that the heat dissipation medium can effectively flow over the outer surface of the circumferential target 13, thus ensuring heat dissipation efficiency.

[0037] To ensure reliable isolation between the protective cover 230 and the partition sleeve 220 at the top, and to ensure reliable communication between the first heat dissipation channel 201 and the second heat dissipation channel 202, in this embodiment, as follows: Figure 5 As shown, a support block 241 protrudes from the top of the partition cover 240, which can effectively separate the protective cover 230 from the partition sleeve 220. In this embodiment, four support blocks 241 are provided and are evenly spaced along the circumference. On the one hand, this ensures the reliability of the heat dissipation channel connection, and on the other hand, it guides the heat dissipation medium to ensure the smooth flow of the heat dissipation medium in the cylindrical heat dissipation channel.

[0038] To facilitate the installation of the separating sleeve 220 and the protective cover 230 to the heat dissipation flange 210, in this embodiment, the inner bore sidewall of the heat dissipation flange 210 is provided with a multi-level stepped structure. The separating sleeve 220 and the protective cover 230 are fixed to the inner bore sidewall of the heat dissipation flange 210 and positioned on the corresponding steps of the multi-level stepped structure.

[0039] For ease of installation, in this embodiment, the protective cover 230 is threadedly fixed to the heat dissipation flange 210, and the partition sleeve 220 is pressed onto the corresponding step of the multi-step structure by the partition cover 240, making the operation convenient and effective.

[0040] In accordance with sealing requirements, in this embodiment, a first sealing ring 221 is provided between the contact sidewall of the partition sleeve 220 and the heat dissipation flange 210. The first sealing ring 221 is clamped between the contact sidewall of the partition sleeve 220 and the heat dissipation flange 210, and the pre-tightening stress of the first sealing ring 221 can also improve the fixing reliability between the partition sleeve 220 and the heat dissipation flange 210.

[0041] An extended structure is provided above the threaded area of ​​the protective cover 230. A second sealing ring 231 is provided between the corresponding step surfaces of the extended structure and the multi-stage stepped structure. The second sealing ring 231 can be protected within the space enclosed by the extended structure and the heat dissipation flange 210, avoiding interference from external contamination to the seal, ensuring the reliability of the seal, and the length of the sealing line can be extended by using the threaded connection area to improve the sealing effect.

[0042] To achieve a seal between the heat dissipation flange 210 and the anode flange 10 and ensure the sealing effect of the first heat dissipation channel 201, in this embodiment, a third sealing ring 211 is provided between the mating surfaces of the heat dissipation flange 210 and the anode flange 10. When the heat dissipation flange 210 and the anode flange 10 are tightened together by screws, the third sealing ring 211 can be tightened to achieve a seal between the heat dissipation flange 210 and the anode flange 10.

[0043] To further enhance the sealing effect, in this embodiment, the mating surfaces of the heat dissipation flange 210 and the anode flange 10 are fitted together via a mating platform and a mating groove. The depth of the mating groove is less than the height of the mating platform, and the sidewalls of the mating groove and the mating platform fit snugly together. A third sealing ring 211 is disposed between the mating surfaces of the mating groove and the mating platform. The depth of the mating groove being less than the height of the mating platform ensures a good fit between the mating surfaces of the mating platform and the mating groove, thereby ensuring that the third sealing ring 211 can be compressed and sealed. The sidewalls of the mating platform and the mating groove can extend the sealing line length, improving the sealing effect. The mating platform and the mating groove are coaxially matched, facilitating the assurance of coaxiality.

[0044] The heat dissipation flange 210, partition sleeve 220, protective cover 230, and partition cap 240 can be made of metals such as aluminum or aluminum alloy. The heat dissipation medium can be water, or insulating liquid media such as fluorinated liquid or natural ester insulating liquid. Depending on the insulation requirements, an insulating coating such as a nano-ceramic coating or a graphene composite coating can also be applied to the outside of the anode module. The insulation requirements have no essential impact on the heat dissipation architecture of this application. The specific insulation scheme can be selected according to actual needs, and this application does not impose any special limitations on it. Furthermore, the insulation scheme has no essential impact on the heat dissipation effect of this application; that is, the essential implementation effect of this utility model is not limited by the insulation scheme.

[0045] This invention also provides an X-ray tube, including the above-mentioned anode heat dissipation structure based on the X-ray tube, which can effectively improve the heat dissipation efficiency of the anode module and facilitate the power increase of the X-ray tube.

[0046] The present invention provides an anode heat dissipation structure based on an X-ray tube. The X-ray tube has a partition sleeve spaced outside the anode module, and a protective cover is also spaced outside the partition sleeve. This forms a first heat dissipation channel between the anode module and the partition sleeve, and a second heat dissipation channel between the partition sleeve and the protective cover. The second heat dissipation channel and the first heat dissipation channel are connected by an opening at the top of the partition sleeve. The first heat dissipation channel can further transfer heat to the second heat dissipation channel through the partition sleeve, which increases the heat dissipation efficiency and can effectively improve the heat dissipation efficiency and the performance of the X-ray tube.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The embodiments described above are merely illustrative of several specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of protection of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model patent should be determined by the appended claims.

Claims

1. An anode heat dissipation structure based on an X-ray tube, characterized in that, The anode module of the X-ray tube includes an anode fixed on an anode flange, a beryllium window and a circumferential target disposed on the anode, and the anode heat dissipation structure includes: A heat dissipation flange is fixedly mounted on the anode flange and sleeved on the outside of the anode module. The bottom end of the heat dissipation flange is sealed and matched with the anode. A partition sleeve is sealed and fixed on the heat dissipation flange. The partition sleeve covers the outside of the anode module and is spaced and matched with the anode module to form a first heat dissipation channel between the partition sleeve and the anode module. A protective cover is sealed and fixed on the heat dissipation flange and covers the outside of the partition sleeve, and is spaced and matched with the partition sleeve to form a second heat dissipation channel between the protective cover and the partition sleeve. The second heat dissipation channel and the first heat dissipation channel communicate with each other through an opening at the top of the partition sleeve. The heat dissipation flange is further provided with a first channel and a second channel, which are respectively connected to the first heat dissipation channel and the second heat dissipation channel, and connected to the outside to transport the heat dissipation medium.

2. The anode heat dissipation structure based on an X-ray tube according to claim 1, characterized in that, The anode heat dissipation structure further includes: a partition cover, which is disposed on the top of the partition sleeve. The partition cover is a T-shaped structure similar to the morphology of the upper surface of the circumferential target, and a portion of the partition cover extends into the groove structure on the upper surface of the circumferential target. A connecting channel is provided in the center of the partition cover.

3. The anode heat dissipation structure based on an X-ray tube according to claim 2, characterized in that, The top of the partition cover also features a protruding support block.

4. The anode heat dissipation structure based on an X-ray tube according to claim 3, characterized in that, The inner wall of the heat dissipation flange is provided with a multi-stage stepped structure. The partition sleeve and the protective cover are fixed to the inner wall of the heat dissipation flange and positioned on the corresponding steps of the multi-stage stepped structure.

5. The anode heat dissipation structure based on an X-ray tube according to claim 4, characterized in that, The protective cover is threadedly fixed to the heat dissipation flange, and the partition sleeve is pressed against the corresponding step of the multi-level stepped structure by the partition cover.

6. The anode heat dissipation structure based on an X-ray tube according to claim 5, characterized in that, A first sealing ring is provided between the partition sleeve and the contact side wall of the heat dissipation flange.

7. The anode heat dissipation structure based on an X-ray tube according to claim 5, characterized in that, An extension structure is provided above the threaded area of ​​the protective cover, and a second sealing ring is provided between the extension structure and the corresponding step surface of the multi-level step structure.

8. The anode heat dissipation structure based on an X-ray tube according to claim 1, characterized in that, A third sealing ring is provided between the mating surfaces of the heat dissipation flange and the anode flange.

9. The anode heat dissipation structure based on an X-ray tube according to claim 8, characterized in that, The mating surfaces of the heat dissipation flange and the anode flange are fitted together by a mating platform and a mating groove, and the depth of the mating groove is less than the height of the mating platform. The mating groove fits snugly against the side wall of the mating platform, and the third sealing ring is disposed between the mating surfaces of the mating groove and the mating platform.

10. An X-ray tube, characterized in that, Includes the X-ray tube-based anode heat dissipation structure as described in any one of claims 1 to 9.

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