CN115985739B - Zero-hysteresis superconducting heat body heat radiation structure for anode of x-ray tube - Google Patents
Zero-hysteresis superconducting heat body heat radiation structure for anode of x-ray tube Download PDFInfo
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- CN115985739B CN115985739B CN202310279112.4A CN202310279112A CN115985739B CN 115985739 B CN115985739 B CN 115985739B CN 202310279112 A CN202310279112 A CN 202310279112A CN 115985739 B CN115985739 B CN 115985739B
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Abstract
The invention relates to the technical field of x-ray tubes, and discloses a zero-lag superconducting heat body radiating 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, one end of the x-ray tube main body is fixedly connected with the superconducting heat body radiating structure.
Description
Technical Field
The invention relates to the technical field of x-ray tubes, in particular to a zero-lag superconducting heat body radiating structure for an anode of an x-ray tube.
Background
When the electron beam is impacted on the anode target in high-speed operation, more than ninety percent of electron kinetic energy is converted into heat energy, which visually shows that the temperature of the anode target surface is increased sharply. If the x-ray tube is cooled insufficiently, two consequences can occur: 1. sublimation of the material that is the anode target, poor heat dissipation by the x-ray tube, results in the material of the anode target being directly changed from a solid to a gas, thereby reducing the purity of the vacuum within 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 short circuit or electric arc is generated, the material of the anode target is further sublimated, the vacuum purity is continuously reduced, and finally the x-ray tube cannot work. 2. Destructive ion release. When the load on the anode target exceeds the pressure point that the anode target material can withstand, damaging ions are released, which are directed to the tungsten filament and erode the filament, causing damage to the filament or causing a break in the filament.
Poor heat dissipation of the x-ray tube is therefore the most common cause of failure of the x-ray tube. The existing x-ray tube mainly adopts the forms of oil cooling, air cooling and the like, the heat dissipation path is mainly that the anode head is connected with the target surface to conduct the heat generated by the target surface to the external cooling circulation, the anode head adopts a solid structure made of oxygen-free copper material, but the heat dissipation still has heat conduction hysteresis and heat conduction uneven temperature in the starting process, and based on the description, the inventor adopts the heat pipe structure of the omega-shaped groove of the superconducting body to replace the existing anode head to greatly reduce the heat transmission thermal resistance and heat transmission hysteresis, and greatly prolongs the service life of the anode.
Disclosure of Invention
The invention aims to provide a zero-lag superconducting heat body radiating structure for an anode of an X-ray tube, which has the advantages of being capable of conducting heat generated by the anode of the X-ray tube rapidly with zero lag, reducing the service life influence of the anode caused by rapid temperature increase due to heat conduction lag, greatly improving the service life of the X-ray tube and the like.
The aim of the invention can be achieved by the following technical scheme:
the zero-hysteresis superconducting heat body radiating structure for the anode of the X-ray tube comprises an oil tank and is characterized in that a fixing support is fixedly connected in the oil tank, an X-ray tube main body is fixedly connected to the fixing support, one end of the X-ray tube main body is fixedly connected with the superconducting heat body radiating structure, and one side of the oil tank is fixedly connected with an external cooling circulation device.
As a further scheme of the invention: the X-ray tube main body comprises a glass shell, one end of the glass shell is fixedly connected with a cathode assembly, an internal cavity is formed in the glass shell, the other end of the glass shell is fixedly connected with an anode head, one side of the anode head is fixedly connected with a target surface, the outer surface of the anode head is fixedly connected with an anode cover, and one end of the anode head is connected with a superconductive heat body radiating structure.
As a further scheme of the invention: the superconductive body heat radiation structure includes the cooling tube, the cavity groove with cooling tube fixed connection is seted up to the one end of positive pole head, omega shape groove has been seted up in the cooling tube, omega shape inslot is filled with cooling 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 evaporation end, the one end that the cooling tube leaned on the second terminal surface is the condensation end, the outer 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 50%, 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 is fixedly connected in the heat dissipation box, an oil cooling plate fixedly connected with the heat dissipation box is fixedly connected with one end of the liquid inlet pipeline, a heat dissipation cavity is formed in the oil cooling plate, a plurality of cooling fins are fixedly connected with one side of the oil cooling plate, an oil return pipe connected with the heat dissipation cavity is fixedly connected with one side of the oil cooling plate, an oil pump fixedly connected with the heat dissipation box is connected with one end of the oil return pipe, a liquid return pipeline fixedly connected with the oil tank is connected with the output end of the oil pump, and two cooling fans are fixedly connected in the heat dissipation box.
As a further scheme of the invention: the top of the oil tank is provided with a projection window.
The invention has the beneficial effects that:
the heat generated by the anode during the working of the main body of the X-ray tube is rapidly radiated into the insulating oil in the oil tank in a zero-lag way through the heat radiation structure of the superconducting heat body, and then the heat is circularly radiated through the external cooling circulation device, so that the heat conductivity coefficient of the equivalent heat absorption equivalent of phase change of working medium reaches 360-460 kw/(m DEG C) which is nearly thousands times that of oxygen-free copper, and the insulating oil is circularly cooled through the external cooling circulation device 5, thereby greatly reducing the heat conduction hysteresis, reducing the service life influence of the anode caused by the rapid temperature increase caused by the heat conduction hysteresis, and greatly improving the service life of the X-ray tube.
By adopting the heat dissipation structure of the superconducting heat body, the capillary force of the micro omega-shaped groove is utilized, and the heat with smaller sectional area can be remotely transmitted without external force circulation, and meanwhile, the heat dissipation structure has the advantages of good temperature uniformity, light weight and the like.
Drawings
The invention is further described below 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 exterior structure of the x-ray tube body and the superconductive body heat dissipating structure of the present invention;
FIG. 4 is a perspective cross-sectional view of the internal structure of the x-ray tube body and the superconductive heat dissipating structure of the present invention;
fig. 5 is an enlarged view of a of fig. 4 according to the present invention.
In the figure: 1. an oil tank; 2. a fixed bracket; 3. an x-ray tube body; 4. a superconducting heat body heat dissipation structure; 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 heat radiating pipe; 13. a cavity groove; 14. omega-shaped grooves; 15. a first end face; 16. a second end face; 17. an evaporation end; 18. a condensing end; 19. annular ribs; 20. a heat radiation box; 21. a liquid inlet pipeline; 22. an oil cooling plate; 23. a heat sink; 24. an oil return pipe; 25. an oil pump; 26. a liquid return pipeline; 27. a heat radiation fan; 28. and projecting a window.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, the invention discloses a zero-lag superconductive heat body radiating structure for an anode of an x-ray tube, which comprises an oil tank 1, wherein a fixed support 2 is fixedly connected in the oil tank 1, an x-ray tube main body 3 is fixedly connected to the fixed support 2, one end of the x-ray tube main body 3 is fixedly connected with a superconductive heat body radiating structure 4, one side of the oil tank 1 is fixedly connected with an external cooling circulation device 5, the x-ray tube main body 3 is fixedly arranged on the fixed support 2, insulating oil is then injected into the oil tank 1, when the x-ray tube main body 3 works, heat generated by the x-ray tube main body 3 is quickly introduced into the insulating oil in the oil tank 1 through the superconductive heat radiating structure 4, and then the insulating oil cools the temperature of the cooling oil through the external cooling circulation device 5, so that zero-lag quick radiating of the heat generated by the x-ray tube is realized, the damage of the heat to the x-ray tube main body 3 is greatly reduced, and the service life of the x-ray tube is prolonged.
The X-ray tube main body 3 comprises a glass bulb 6, one end fixedly connected with cathode assembly 7 of glass bulb 6, interior 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 surface 10 of anode head 9, the surface fixedly connected with anode cover 11 of anode head 9, the one end of anode head 9 is connected with superconductive heat body heat radiation structure 4, launches the electron to target surface 10 on the anode head 9 through cathode assembly 7, prevents the electron through the anode cover 11 simultaneously and sputters away, carries out quick heat dissipation in the insulating oil in the quick conveyer belt oil tank 1 of heat that electron striking target surface 10 produced through superconductive heat radiation structure 4 afterwards.
The superconductive body heat radiation structure 4 includes cooling tube 12, cavity groove 13 with cooling tube 12 fixed connection has been seted up to the one end of positive pole head 9, omega shape groove 14 has been seted up in the cooling tube 12, omega shape groove 14 intussuseption is filled with cooling medium, the first terminal surface 15 of one end fixedly connected with of cooling tube 12, the other end fixedly connected with second terminal surface 16 of cooling tube 12, the one end that cooling tube 12 is close to first terminal surface 15 is evaporation end 17, the one end that cooling tube 12 leaned on second terminal surface 16 is condensation end 18, the fixed ring rib 19 that has cup jointed of the surface of condensation end 18, through the cooperation of first terminal surface 15 and second terminal surface 16, sealed the both ends of cooling tube 12, prevent that the working medium in the cooling tube 12 from leaking, because evaporation end 17 is close to target surface 10, the last heat conducting through evaporation end 17, the working medium gasification steam transports to condensation end 18 through omega shape groove 14, the ring rib 19 increase with the cooling area of insulating oil afterwards, make the steam be in condensation end 18 the thermal conductivity of capillary effect that the capillary effect is greatly reduced under the capillary effect of heat transfer coefficient of heat conduction is greatly reduced by 360 degrees centigrade, thereby the thermal hysteresis factor is realized, the thermal conduction coefficient is greatly reduced by the realization of long-time, and the thermal hysteresis factor is greatly reduced because the capillary effect is greatly reduced under the capillary effect of heat conduction coefficient is greatly under the capillary effect of the temperature of heat conduction of the heat radiation coefficient is greatly reduced, thereby the heat transfer coefficient is greatly reduced by the thermal conduction coefficient is achieved under the temperature of the thermal conduction coefficient of the temperature of the heat transfer coefficient is greatly under the temperature of the capillary effect of the temperature coefficient of the temperature of the capillary 4.
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 identical to 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 preheated and thermally expanded anode head 9, and is naturally cooled. The radiating pipe 12 is tightly connected with the anode head 9 to form a whole.
The external cooling circulation device 5 comprises a heat dissipation box 20 fixedly connected with the oil tank 1, a liquid inlet pipeline 21 fixedly connected with the oil tank 1 is fixedly connected in the heat dissipation box 20, an oil cooling plate 22 fixedly connected with the heat dissipation box 20 is fixedly connected at one end of the liquid inlet pipeline 21, a heat dissipation cavity is arranged in the oil cooling plate 22, a plurality of heat dissipation fins 23 are fixedly connected at one side of the oil cooling plate 22, an oil return pipe 24 connected with the heat dissipation cavity is fixedly connected at one side of the oil cooling plate 22, an oil pump 25 fixedly connected with the heat dissipation box 20 is fixedly connected at one end of the oil return pipe 24, a liquid return pipeline 26 fixedly connected with the oil tank 1 is fixedly connected at the output end of the oil pump 25, two radiator fans 27 are fixedly connected in the radiator tank 20, insulating oil in a radiator tank 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 oil cooling plate 22 sucks the insulating oil in the oil tank 1 into the radiator tank in the oil cooling plate 22 through the liquid inlet pipeline 21, then the insulating oil in the radiator tank is cooled through the radiator fins 23, and meanwhile, the radiator fans 27 blow and radiate the radiator fins 23, so that heat of the insulating oil after heat absorption in the oil tank 1 is quickly dissipated into the atmosphere, and then the insulating oil pump 25 after heat radiation is introduced into the oil tank 1 through the oil pump 25 and the oil return pipeline 26, so that circulating heat radiation of the insulating oil after heat radiation in the oil tank 1 is realized.
The top of the tank 1 is provided with a projection window 28.
The working principle of the invention is as follows: through with x-ray tube main part 3 fixed mounting on fixed bolster 2, later to the injection insulating oil in the oil tank 1, when x-ray tube main part 3 carries out the during operation, through cathode assembly 7 to the target surface 10 on the positive pole head 9 transmit electrons, prevent the electron to splash away through the positive pole cover 11 simultaneously, produce heat simultaneously on the target, because evaporation end 17 is close to target surface 10, later carry out heat conduction through evaporation end 17 with the heat on the target surface 10, the working medium absorbs heat gasification steam transports to condensation end 18 through omega-shaped groove 14, later annular fin 19 of condensation end 18 increases the cooling area with insulating oil, make steam in condensation end 18 liquefaction, because omega-shaped groove 14 capillary action under the evaporation end 17, consequently, long-range quick heat transfer under the less cross-section can be realized without external force effect, realize utilizing the nearly thousand times of working medium endothermic equivalent coefficient of heat conductivity to reach 360 ~ 460 kw/(m..C.), the cycle cooling of insulating oil through outer cooling circulation device 5, thereby realized thermal conduction hysteresis quality greatly reduced, the positive pole has reduced the positive pole temperature and has improved the heat transmission life-span that the capillary effect is long-span is long-time because the capillary effect that the capillary heat has greatly increased at the time of the capillary thermal mass is long-span, the capillary effect is long-term thermal efficiency is long-lived at the time has the capillary effect because the capillary effect is long service life is long-span is long-time required.
The oil pump 25 and the oil return pipe 24 are used for sucking the insulating oil in the heat dissipation groove in the oil cooling plate 22 into the oil pump 25, meanwhile, the oil cooling plate 22 is used for sucking the insulating oil in the oil tank 1 into the heat dissipation groove in the oil cooling plate 22 through the liquid inlet pipeline 21, then the insulating oil in the heat dissipation groove is cooled through the heat dissipation fins 23, and meanwhile, the heat dissipation fan 27 is used for blowing and dissipating the heat of the insulating oil after heat absorption in the oil tank 1 into the atmosphere, and then the insulating oil pump 25 after heat dissipation is used for pumping the insulating oil into the oil tank 1 through the oil pump 25 and the oil return pipeline 26, so that the circulation heat dissipation of the insulating oil after heat dissipation in the oil tank 1 is realized.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (3)
1. The zero-hysteresis superconducting heat body radiating structure for the anode of the X-ray tube comprises an oil tank (1) and is characterized in that a fixing support (2) is fixedly connected in the oil tank (1), an X-ray tube main body (3) is fixedly connected to the fixing support (2), one end of the X-ray tube main body (3) is fixedly connected with a superconducting heat body radiating structure (4), one side of the oil tank (1) is fixedly connected with an external cooling circulation device (5), the X-ray tube main body (3) comprises a glass shell (6), one end of the glass shell (6) is fixedly connected with a cathode assembly (7), an inner cavity (8) is formed in the glass shell (6), the other end of the glass shell (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), one end of the anode head (9) is connected with the superconducting heat radiating structure (4), the anode structure (4) comprises a tube (12), one end of the anode head (9) is fixedly connected with a superconducting heat body radiating groove (14) in the cooling groove (14) and one end of the superconducting heat body (12) is filled with a cooling groove (14), the cooling device is characterized in that one end of the cooling tube (12) is fixedly connected with a first end face (15), the other end of the cooling tube (12) is fixedly connected with a second end face (16), one end, close to the first end face (15), of the cooling tube (12) is an evaporation end (17), one end, close to the second end face (16), of the cooling tube (12) is a condensation end (18), annular ribs (19) are fixedly sleeved on the outer surface of the condensation end (18), the cooling working medium is potassium or sodium, the filling rate is 50%, the cooling tube (12) is made of oxygen-free copper, and the inner diameter of the cavity groove (13) is consistent with the outer diameter of the cooling tube (12).
2. The zero-hysteresis superconducting heat body radiating structure for an anode of an x-ray tube according to claim 1, wherein the external cooling circulation device (5) comprises a radiating box (20) fixedly connected with an oil tank (1), a liquid inlet pipeline (21) fixedly connected with the oil tank (1) is fixedly connected in the radiating box (20), an oil cooling plate (22) fixedly connected with the radiating box (20) is fixedly connected with one end of the liquid inlet pipeline (21), a radiating cavity is formed in the oil cooling plate (22), a plurality of radiating fins (23) are fixedly connected to one side of the oil cooling plate (22), an oil return pipe (24) connected with the radiating cavity is fixedly connected to one side of the oil return pipe (22), an oil pump (25) fixedly connected with the radiating box (20) is fixedly connected to one end of the oil return pipe (24), an oil return pipeline (26) fixedly connected with the oil tank (1) is fixedly connected with the output end of the oil pump (25), and two radiating fans (27) are fixedly connected in the box (20).
3. A zero-lag superconductor heat sink structure for an anode of an x-ray tube according to claim 1, wherein the top of the oil tank (1) is provided with a projection window (28).
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN115985739B true CN115985739B (en) | 2023-06-02 |
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| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7382863B2 (en) * | 2005-10-31 | 2008-06-03 | General Electric Company | Anode cooling system for an X-ray tube |
| US7494249B2 (en) * | 2006-07-05 | 2009-02-24 | Jaffe Limited | Multiple-set heat-dissipating structure for LED lamp |
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2023
- 2023-03-22 CN CN202310279112.4A patent/CN115985739B/en active Active
Patent Citations (7)
| 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 |
| 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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