CN115985739A - Zero-lag super heat conductor heat dissipation structure for anode of x-ray tube - Google Patents
Zero-lag super heat conductor heat dissipation structure for anode of x-ray tube Download PDFInfo
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- CN115985739A CN115985739A CN202310279112.4A CN202310279112A CN115985739A CN 115985739 A CN115985739 A CN 115985739A CN 202310279112 A CN202310279112 A CN 202310279112A CN 115985739 A CN115985739 A CN 115985739A
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Abstract
The invention relates to the technical field of an x-ray tube, and discloses a zero-lag super-heat conductor heat dissipation structure for an anode of an x-ray tube, which comprises an oil tank, wherein a fixed support is fixedly connected in the oil tank, an x-ray tube main body is fixedly connected on the fixed support, and one end of the x-ray tube main body is fixedly connected with a super-conductor heat dissipation mechanism.
Description
Technical Field
The invention relates to the technical field of x-ray tubes, in particular to a zero-lag superconductive heat body heat dissipation structure for an anode of an x-ray tube.
Background
When the electron beam runs at high speed and impacts the anode target, more than ninety percent of the kinetic energy of the electrons is converted into heat energy, which is intuitively shown that the temperature of the surface of the anode target is increased sharply. If the x-ray tube is not cooled sufficiently, two consequences can occur: 1. the material of the anode target sublimes, the heat dissipation of the x-ray tube is poor, and the material of the anode target directly changes from solid to gas, thereby reducing the purity of the vacuum in the tube. When the purity is not high enough, the x-ray tube cannot withstand the high voltage difference between the anode and the cathode, so that a short circuit or an electric arc is generated, the material of the anode target continues to sublimate, the vacuum purity is continuously reduced, and finally the x-ray tube cannot work. 2. Destructive ion release. When the load of the anode target exceeds the pressure point that the target material of the anode can withstand, destructive ions are released, and these ions are directed to the tungsten filament and corrode the filament, causing damage to the filament or causing an open circuit.
Therefore, poor heat dissipation of the x-ray tube is the most common cause of x-ray tube failure. The heat dissipation of the existing x-ray tube mainly adopts the forms of oil cooling, air cooling and the like, the heat dissipation way is mainly to connect a target surface through an anode head, the heat generated by the target surface is conducted to external cooling circulation, the anode head adopts a solid structure made of oxygen-free copper materials, although the solid structure is a good heat conductor, the heat dissipation still has heat conduction hysteresis and heat conduction non-uniform temperature property in the starting process, based on the description, the inventor adopts a super-heat conductor omega-shaped channel heat pipe structure to replace the existing anode head, so that the heat transmission thermal resistance and the heat transmission hysteresis are greatly reduced, and the service life of the anode is greatly prolonged.
Disclosure of Invention
The invention aims to provide a zero-lag super heat conductor heat dissipation structure for an anode of an x-ray tube, which has the advantages of performing zero-lag quick heat conduction on heat generated by the anode of the x-ray tube, reducing the influence of the anode on the service life caused by the quick temperature increase due to the heat conduction lag, greatly prolonging the service life of the x-ray tube and the like.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a zero lag super heat conductor heat radiation structure for x-ray tube positive pole, includes the oil tank, its characterized in that, fixedly connected with fixed bolster in the oil tank, fixedly connected with x-ray tube main part on the fixed bolster, the one end fixedly connected with superconductor heat dissipation mechanism of x-ray tube main part, one side fixedly connected with external cooling circulation device of oil tank.
As a further scheme of the invention: the X-ray tube main part includes the glass bulb, the one end fixedly connected with cathode assembly of glass bulb, interior cavity has been seted up in the glass bulb, the other end fixedly connected with anode head of glass bulb, one side fixedly connected with target surface of anode head, the outer fixed surface of anode head is connected with the positive pole cover, the one end of anode head is connected with superconductor heat dissipation mechanism.
As a further scheme of the invention: the superconductor heat dissipation mechanism includes the cooling tube, the cavity groove with cooling tube fixed connection is seted up to the one end of positive pole head, the omega-shaped groove has been seted up in the cooling tube, the omega-shaped inslot is filled with the cooling working medium, the first terminal surface of one end fixedly connected with of cooling tube, the other end fixedly connected with second terminal surface of cooling tube, the one end that the cooling tube is close to first terminal surface is the evaporating end, the one end that the cooling tube leaned on the second terminal surface is the condensation end, the external fixed surface of condensation end has cup jointed annular fin.
As a further scheme of the invention: the cooling working medium is potassium or sodium, the filling rate is% and the radiating pipe is made of oxygen-free copper.
As a further scheme of the invention: the inner diameter of the cavity groove is consistent with the outer diameter of the radiating pipe.
As a further scheme of the invention: the external cooling circulation device comprises a heat dissipation box fixedly connected with an oil tank, a liquid inlet pipeline fixedly connected with the oil tank and arranged in the heat dissipation box, an oil cooling plate fixedly connected with one end of the liquid inlet pipeline and fixedly connected with the heat dissipation box, a heat dissipation cavity is formed in the oil cooling plate, a plurality of cooling fins fixedly connected with one side of the oil cooling plate, an oil return pipe fixedly connected with one side of the oil cooling plate and connected with the heat dissipation cavity, an oil pump fixedly connected with one end of the oil return pipe and fixedly connected with the heat dissipation box, an output end fixedly connected with the liquid return pipeline fixedly connected with the oil tank and connected with the oil tank, and two cooling fans fixedly connected with the heat dissipation box.
As a further scheme of the invention: and a projection window is arranged at the top of the oil tank.
The invention has the beneficial effects that:
(1) The heat generated by the anode when the X-ray tube body works is quickly radiated into the insulating oil in the oil tank in a zero lag way through the superconductor radiating mechanism, then the heat-absorbed insulating oil is circularly radiated through the external cooling circulating device, the fact that the equivalent heat conduction coefficient of the heat absorption of the working medium phase change reaches 360-460 kw/(m DEG C) which is nearly thousand times of that of oxygen-free copper is achieved, and then the external cooling circulating device 5 is used for circularly cooling the insulating oil, so that the heat conduction lag is greatly reduced, the influence of the service life of the anode caused by the quick temperature increase caused by the heat conduction lag is reduced, and the service life of the X-ray tube is greatly prolonged.
By adopting the superconductor heat dissipation mechanism, the capillary force of the micro-omega-shaped groove is utilized, so that the long-distance transmission of heat with a small sectional area can be realized without external force circulation, and the superconductor heat dissipation mechanism has the advantages of good temperature uniformity, light weight and the like.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a perspective view of the external structure of the present invention;
FIG. 2 is a perspective view of the internal structure of the present invention;
FIG. 3 is a perspective view of the external structure of the x-ray tube body and superconductor heat dissipation mechanism of the present invention;
figure 4 is a perspective cross-sectional view of the internal structure of the x-ray tube body and superconductor heat dissipation mechanism of the present invention;
fig. 5 is an enlarged view of a in fig. 4 of the present invention.
In the figure: 1. an oil tank; 2. a fixed bracket; 3. an x-ray tube body; 4. a superconductor heat dissipation mechanism; 5. an external cooling circulation device; 6. a glass envelope; 7. a cathode assembly; 8. an internal cavity; 9. an anode head; 10. a target surface; 11. an anode cover; 12. a radiating pipe; 13. a cavity groove; 14. an omega-shaped slot; 15. a first end face; 16. a second end face; 17. an evaporation end; 18. a condensing end; 19. an annular rib; 20. a heat dissipation box; 21. a liquid inlet pipeline; 22. an oil-cooled plate; 23. a heat sink; 24. an oil return pipe; 25. an oil pump; 26. a return line; 27. a heat radiation fan; 28. and projecting the window.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention is a zero-lag super-conductive heat sink structure for an anode of an x-ray tube, including an oil tank 1, a fixing bracket 2 fixedly connected to the oil tank 1, an x-ray tube main body 3 fixedly connected to the fixing bracket 2, a super-conductor heat sink mechanism 4 fixedly connected to one end of the x-ray tube main body 3, and an external cooling circulation device 5 fixedly connected to one side of the oil tank 1, wherein the x-ray tube main body 3 is fixedly mounted on the fixing bracket 2, and then insulating oil is injected into the oil tank 1, when the x-ray tube main body 3 operates, the heat generated by the x-ray tube main body 3 is rapidly introduced into the insulating oil in the oil tank 1 through the super-conductor heat sink mechanism 4, and then the insulating oil transmits the temperature of the cooling oil to the atmosphere through the external cooling circulation device 5 to cool the cooling oil, thereby achieving zero-lag rapid heat dissipation of the heat generated by the x-ray tube, greatly reducing damage of the x-ray tube main body 3 by the heat, and prolonging the service life of the x-ray tube.
X-ray tube main part 3 includes glass bulb 6, the one end fixedly connected with cathode assembly 7 of glass bulb 6, inside cavity 8 has been seted up in the glass bulb 6, the other end fixedly connected with anode head 9 of glass bulb 6, one side fixedly connected with target face 10 of anode head 9, the external fixed surface of anode head 9 is connected with anode cap 11, the one end of anode head 9 is connected with superconductor heat dissipation mechanism 4, and through cathode assembly 7 to the target face 10 transmission electron on the anode head 9, prevent through anode cap 11 simultaneously that the electron from sputtering away, carry out quick heat dissipation in the insulating oil in the heat fast conveyor belt oil tank 1 that the electron striking target face 10 produced through superconductor heat dissipation mechanism 4 afterwards.
The superconductor heat dissipation mechanism 4 comprises a heat dissipation pipe 12, a cavity groove 13 fixedly connected with the heat dissipation pipe 12 is arranged at one end of an anode head 9, an omega-shaped groove 14 is formed in the heat dissipation pipe 12, a cooling working medium is filled in the omega-shaped groove 14, a first end face 15 of one end of the heat dissipation pipe 12 is fixedly connected with a second end face 16 of the other end of the heat dissipation pipe 12, one end of the heat dissipation pipe 12, which is close to the first end face 15, is an evaporation end 17, one end of the heat dissipation pipe 12, which is close to the second end face 16, is a condensation end 18, an annular rib 19 is fixedly sleeved on the outer surface of the condensation end 18, two ends of the heat dissipation pipe 12 are sealed through the matching of the first end face 15 and the second end face 16, the working medium in the heat dissipation pipe 12 is prevented from leaking, and the evaporation end 17 is close to a target surface 10, then, heat is conducted on the target surface 10 through the evaporation end 17, the working medium absorbs heat and gasified steam is conveyed to the condensation end 18 through the omega-shaped groove 14, then the cooling area of insulating oil is increased through the annular fins 19 of the condensation end 18, the steam is liquefied at the condensation end 18, and the steam returns to the evaporation end 17 under the capillary action of the omega-shaped groove 14, so that long-distance and rapid heat transfer under a small cross section area can be realized without external force action, and the effect that the equivalent heat conduction coefficient of the working medium phase change heat absorption reaches 360-460 kw/(m DEG C) which is nearly thousand times of that of oxygen-free copper is realized, so that the heat conduction hysteresis is greatly reduced, the service life influence of the anode caused by rapid temperature increase due to the heat conduction hysteresis is reduced, and the service life of the x-ray tube is greatly prolonged.
The cooling working medium is potassium or sodium, the filling rate is 50%, and the radiating pipe 12 is made of oxygen-free copper.
The inner diameter of the cavity groove 13 is the same as the outer diameter of the radiating pipe 12, and when the radiating pipe 12 is installed, the radiating pipe 12 is inserted into the cavity groove 13 inside the anode head 9 which is preheated and thermally expanded, and is naturally cooled. So that the radiating pipe 12 is tightly connected with the anode head 9 to form a whole.
The external cooling circulation device 5 includes the heat dissipation case 20 with 1 fixed connection of oil tank, fixedly connected with and 1 fixed connection's of oil tank liquid inlet pipeline 21 in the heat dissipation case 20, the one end fixedly connected with of liquid inlet pipeline 21 and the oil cooling board 22 of heat dissipation case 20 fixed connection, the heat dissipation chamber has been seted up in the oil cooling board 22, a plurality of fin 23 of one side fixedly connected with of oil cooling board 22, the oil return pipe 24 that one side fixedly connected with of oil cooling board 22 is connected with the heat dissipation chamber, the one end fixedly connected with and the oil pump 25 of heat dissipation case 20 fixed connection of oil return pipe 24, the output fixedly connected with of oil pump 25 and the liquid return pipe 26 of 1 fixed connection of oil tank, two radiator fan 27 of fixedly connected with in the heat dissipation case 20, through oil pump 25 and oil return pipe 24 with the oil pump 25 in the oil cooling board 22 in the insulating oil tank inhale oil pump 25, simultaneously oil cooling board 22 inhales the radiating tank in the insulating oil in the oil tank 1 through liquid inlet pipeline 21 in the radiating tank 22 in the insulating oil pump 25 inhales the radiating tank, thereby the insulating oil pump 27 cools off the radiating oil in the radiating oil tank after the heat through the radiating oil pump 23 and the heat dissipation oil tank is carried out the heat dissipation through the heat dissipation in the heat dissipation oil tank after 1 fast cycle oil tank that the heat absorption is carried out through the heat dissipation oil pump 26, thereby the heat dissipation oil tank after the heat dissipation oil pump 25 is carried out in the oil tank, the oil tank after the heat dissipation oil pump 25 is carried out, the heat dissipation oil pump 23.
The top of the fuel tank 1 is provided with a projection window 28.
The working principle of the invention is as follows: by fixedly mounting the x-ray tube body 3 on the fixing bracket 2, injecting insulating oil into the oil tank 1, when the x-ray tube body 3 works, emitting electrons to the target surface 10 on the anode head 9 through the cathode assembly 7, preventing the electrons from sputtering out through the anode cover 11, generating heat on the target, because the evaporation end 17 is close to the target surface 10, then conducting the heat on the target surface 10 through the evaporation end 17, the working medium absorbs heat and gasifies the steam and transports the steam to the condensation end 18 through the omega-shaped groove 14, then the annular rib 19 of the condensation end 18 increases the cooling area with the insulating oil, the steam is liquefied at the condensation end 18, and returns to the evaporation end 17 under the capillary action of the omega-shaped groove 14, therefore, the long-distance and rapid heat transfer under a smaller cross section can be realized without external force, the heat conduction coefficient of equivalent heat absorption of working medium phase change is 360-460 kw/(m DEG C) which is nearly thousand times of that of oxygen-free copper, and then the insulating oil is circularly cooled by the external cooling circulating device 5, so that the heat conduction hysteresis is greatly reduced, the influence of the service life of the anode caused by the rapid temperature increase due to the heat conduction hysteresis is reduced, the service life of the x-ray tube is greatly prolonged, and meanwhile, the superconductor heat dissipation mechanism 4 is adopted to realize the long-distance heat transfer under the smaller cross section by utilizing the capillary force of the micro-omega-shaped groove without external force circulation, and has the advantages of good temperature uniformity, light weight and the like.
Insulating oil in the radiating groove in the oil cooling plate 22 is sucked into the oil pump 25 through the oil pump 25 and the oil return pipe 24, meanwhile, the insulating oil in the oil tank 1 is sucked into the radiating groove in the oil cooling plate 22 through the liquid inlet pipeline 21 by the oil cooling plate 22, then, the insulating oil entering the radiating groove is cooled through the radiating fins 23, and meanwhile, the radiating fan 27 conducts blowing and radiating on the radiating fins 23, so that the heat of the insulating oil after heat absorption in the oil tank 1 is quickly dissipated into the atmospheric environment, then, the insulating oil pump 25 after heat dissipation is introduced into the oil tank 1 through the oil pump 25 and the liquid return pipeline 26, and therefore the heat dissipation of the insulating oil in the oil tank 1 is achieved in a circulating mode.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
1. The utility model provides a zero lag super heat conductor heat radiation structure for x-ray tube positive pole, includes oil tank (1), its characterized in that, fixedly connected with fixed bolster (2) in oil tank (1), fixedly connected with x-ray tube main part (3) on fixed bolster (2), the one end fixedly connected with superconductor heat dissipation mechanism (4) of x-ray tube main part (3), one side fixedly connected with outer cooling circulation device (5) of oil tank (1).
2. The zero-lag super-heat conductor heat dissipation structure for the anode of an x-ray tube according to claim 1, wherein the x-ray tube body (3) comprises a glass bulb (6), one end of the glass bulb (6) is fixedly connected with a cathode component (7), an internal cavity (8) is formed in the glass bulb (6), the other end of the glass bulb (6) is fixedly connected with an anode head (9), one side of the anode head (9) is fixedly connected with a target surface (10), the outer surface of the anode head (9) is fixedly connected with an anode cover (11), and one end of the anode head (9) is connected with a super-conductor heat dissipation mechanism (4).
3. The zero-lag super-conductive heat dissipating structure for the anode of an x-ray tube according to claim 2, wherein the super-conductive heat dissipating mechanism (4) comprises a heat dissipating tube (12), one end of the anode head (9) is provided with a cavity groove (13) fixedly connected with the heat dissipating tube (12), an omega-shaped groove (14) is formed in the heat dissipating tube (12), the omega-shaped groove (14) is filled with a cooling working medium, one end of the heat dissipating tube (12) is fixedly connected with a first end surface (15), the other end of the heat dissipating tube (12) is fixedly connected with a second end surface (16), one end of the heat dissipating tube (12) close to the first end surface (15) is an evaporation end (17), one end of the heat dissipating tube (12) close to the second end surface (16) is a condensation end (18), and an annular rib (19) is fixedly sleeved on the outer surface of the condensation end (18).
4. A zero-lag super-conductor heat dissipation structure for x-ray tube anode as claimed in claim 3, wherein the cooling medium is potassium or sodium, the filling rate is 50%, and the material of the heat dissipation pipe (12) is oxygen-free copper.
5. A zero-lag super-conducting heat dissipating structure for x-ray tube anode according to claim 3, wherein the inner diameter of the cavity groove (13) is identical to the outer diameter of the heat dissipating pipe (12).
6. The zero-lag super-heat conductor heat dissipation structure for the anode of the x-ray tube according to claim 1, wherein the external cooling circulation device (5) comprises a heat dissipation box (20) fixedly connected with the oil tank (1), the heat dissipation box (20) is internally and fixedly connected with a liquid inlet pipeline (21) fixedly connected with the oil tank (1), one end of the liquid inlet pipeline (21) is fixedly connected with an oil cooling plate (22) fixedly connected with the heat dissipation box (20), a heat dissipation cavity is formed in the oil cooling plate (22), one side of the oil cooling plate (22) is fixedly connected with a plurality of heat dissipation fins (23), one side of the oil cooling plate (22) is fixedly connected with an oil return pipe (24) connected with the heat dissipation cavity, one end of the oil return pipe (24) is fixedly connected with an oil pump (25) fixedly connected with the heat dissipation box (20), an output end of the oil pump (25) is fixedly connected with a liquid return pipe (26) fixedly connected with the oil tank (1), and two heat dissipation fans (27) are fixedly connected with the heat dissipation box (20).
7. A zero-lag super-conductor heat dissipation structure for x-ray tube anodes as claimed in claim 1, characterized in that the top of the fuel tank (1) is provided with a projection window (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310279112.4A CN115985739B (en) | 2023-03-22 | 2023-03-22 | Zero-hysteresis superconducting heat body heat radiation structure for anode of x-ray tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310279112.4A CN115985739B (en) | 2023-03-22 | 2023-03-22 | Zero-hysteresis superconducting heat body heat radiation structure for anode of x-ray tube |
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| Publication Number | Publication Date |
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| CN115985739A true CN115985739A (en) | 2023-04-18 |
| CN115985739B CN115985739B (en) | 2023-06-02 |
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| CN202310279112.4A Active CN115985739B (en) | 2023-03-22 | 2023-03-22 | Zero-hysteresis superconducting heat body heat radiation structure for anode of x-ray tube |
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| US6307916B1 (en) * | 1999-09-14 | 2001-10-23 | General Electric Company | Heat pipe assisted cooling of rotating anode x-ray tubes |
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| US20080007955A1 (en) * | 2006-07-05 | 2008-01-10 | Jia-Hao Li | Multiple-Set Heat-Dissipating Structure For LED Lamp |
| CN101207112A (en) * | 2006-12-19 | 2008-06-25 | 台达电子工业股份有限公司 | Light emitting diode radiating module and applied display apparatus |
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| CN214542114U (en) * | 2021-04-09 | 2021-10-29 | 西门子爱克斯射线真空技术(无锡)有限公司 | X-ray generating device and imaging equipment |
| CN114423135A (en) * | 2021-12-28 | 2022-04-29 | 杭州海康威视数字技术股份有限公司 | Radiation source |
| CN115206755A (en) * | 2021-04-14 | 2022-10-18 | 上海超群检测科技股份有限公司 | X-ray tube with self-shielding function and manufacturing method thereof |
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2023
- 2023-03-22 CN CN202310279112.4A patent/CN115985739B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6307916B1 (en) * | 1999-09-14 | 2001-10-23 | General Electric Company | Heat pipe assisted cooling of rotating anode x-ray tubes |
| EP1363326A2 (en) * | 2002-05-17 | 2003-11-19 | Chin-Kuang Luo | Heat-dissipating module |
| US20070098143A1 (en) * | 2005-10-31 | 2007-05-03 | General Electric Company | Anode cooling system for an X-ray tube |
| US20080007955A1 (en) * | 2006-07-05 | 2008-01-10 | Jia-Hao Li | Multiple-Set Heat-Dissipating Structure For LED Lamp |
| CN101207112A (en) * | 2006-12-19 | 2008-06-25 | 台达电子工业股份有限公司 | Light emitting diode radiating module and applied display apparatus |
| CN203103278U (en) * | 2013-03-08 | 2013-07-31 | 鞍山天开科技有限公司 | Vacuum superconducting heat pipe radiator |
| CN214542114U (en) * | 2021-04-09 | 2021-10-29 | 西门子爱克斯射线真空技术(无锡)有限公司 | X-ray generating device and imaging equipment |
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