CN117790267A - Paraffin phase-change temperature-controlled X-ray tube - Google Patents
Paraffin phase-change temperature-controlled X-ray tube Download PDFInfo
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- CN117790267A CN117790267A CN202410207260.XA CN202410207260A CN117790267A CN 117790267 A CN117790267 A CN 117790267A CN 202410207260 A CN202410207260 A CN 202410207260A CN 117790267 A CN117790267 A CN 117790267A
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- ray tube
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- 239000012188 paraffin wax Substances 0.000 title claims abstract description 121
- 230000017525 heat dissipation Effects 0.000 claims abstract description 63
- 230000007704 transition Effects 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims description 27
- 239000007769 metal material Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 229910010293 ceramic material Inorganic materials 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 abstract description 3
- 239000012071 phase Substances 0.000 description 27
- 230000008859 change Effects 0.000 description 17
- 238000001816 cooling Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 12
- 230000004308 accommodation Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 229940057995 liquid paraffin Drugs 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000012782 phase change material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- X-Ray Techniques (AREA)
Abstract
The invention provides an X-ray tube with paraffin phase transition temperature control, which relates to the technical field of discharge tubes or discharge lamps, and comprises a tube shell; the heat dissipation device is arranged outside the bulb shell; the cathode is arranged in the bulb shell; an anode target, the front surface of which is arranged opposite to the cathode; and the paraffin module is arranged in the bulb shell, one end of the paraffin module is connected with the back surface of the anode target, and the other end of the paraffin module is connected with the inner wall of the bulb shell. According to the invention, the paraffin module arranged inside the bulb shell and the heat dissipation device arranged outside the bulb shell are utilized to dissipate heat of the X-ray bulb at the same time, so that dual heat dissipation is realized, and the use frequency of the X-ray bulb is improved.
Description
Technical Field
The invention relates to the technical field of discharge tubes or discharge lamps, in particular to a paraffin phase-change temperature-controlled X-ray bulb tube.
Background
An X-ray tube is a core component of an X-ray product as a source of radiation for an X-ray imaging system. When the high-energy electrons emitted by the filament end reach the anode target, only 1% of the generated energy is converted into useful X-rays, and the rest 99% of the generated energy is converted into heat, so that a large amount of heat can be generated when the bulb tube works, if the bulb tube does not timely dissipate heat, the anode target can stop working due to overheating, and meanwhile, the service life of the anode target can be shortened.
The main heat dissipation modes in the current market are divided into radiation heat dissipation, air cooling heat dissipation, water cooling heat dissipation and rotary anode target heat dissipation. The radiation heat dissipation is a mode of transmitting heat to the shell through insulating oil in the bulb tube and dissipating the heat to air, and the radiation heat dissipation rate is slower, so that the long-time use requirement of a customer cannot be met; the air cooling heat dissipation is to take away the heat of the bulb tube by means of the rapid convection generated by an external fan, the heat dissipation rate is high, but the whole set of air cooling control system is required to be added outside the bulb tube, the cost is high, and the space requirement is high; the water cooling heat dissipation is to drive water to flow from a high-heat area to a low-heat area and then drive water to flow back to the high-heat area, so that the water cooling heat dissipation is to take away heat, is a main heat dissipation mode of the high-power bulb tube, is not suitable for the low-power bulb tube, and has higher cost; in order to improve the heat dissipation efficiency and increase the service life of the anode target, and simultaneously reduce the cost and the space occupation rate, technicians put forward a method for dissipating heat of the rotary anode target, but the rotary anode target needs bearing support, the bearing bears higher temperature, the service life requirement of the bearing is higher, and the risk of mechanical failure exists in the rotation process from motor driving to the anode target, once the problem occurs, the whole bulb needs to be replaced again.
Therefore, how to provide an X-ray tube heat dissipation method capable of reducing cost, space occupation and improving heat dissipation reliability of the anode target is a problem to be solved.
Disclosure of Invention
The application provides an X-ray tube with paraffin phase change temperature control, which solves the problems that a rotary anode has higher dependence on a bearing and is easy to cause mechanical failure in the related technology.
Therefore, a first object of the present invention is to provide an X-ray tube with paraffin phase transition temperature control.
In view of the above, the technical solution of the first aspect of the present invention provides an X-ray tube with paraffin phase transition temperature control, including a tube housing; the heat dissipation device is arranged outside the bulb shell; the cathode is arranged in the bulb shell; an anode target, the front surface of which is arranged opposite to the cathode; and the paraffin module is arranged in the bulb shell, one end of the paraffin module is connected with the back surface of the anode target, and the other end of the paraffin module is connected with the inner wall of the bulb shell.
According to the paraffin phase temperature control X-ray tube, the bulb tube comprises a bulb tube shell, a heat radiating device, a cathode, an anode target and a paraffin module, wherein the heat radiating device is arranged outside the bulb tube shell, the cathode, the anode target and the paraffin module are arranged inside the bulb tube shell, and the front faces of the cathode and the anode target are oppositely arranged so as to ensure that electron beams emitted by the cathode can bombard the anode target, and X-rays are generated on the anode target. One end of the paraffin module is connected with the back surface of the anode target, and the other end of the paraffin module is connected with the inner wall of the bulb shell. That is, when the X-ray tube works, the paraffin module can absorb heat on the anode target, and the paraffin is converted from a solid state to a liquid state, so that the heat of the anode target is reduced, namely, the heat of the anode target is absorbed by utilizing the phase change latent heat of the paraffin module, and meanwhile, the paraffin module is connected with the inner wall of the tube shell, so that the heat can be transferred to the outside of the X-ray tube through the inner wall. In addition, the heat dissipation device arranged outside the bulb shell not only can dissipate heat of the whole X-ray bulb when the X-ray bulb works, but also is beneficial to the conversion of paraffin from liquid state to solid state. Therefore, the application utilizes the paraffin module arranged inside the bulb shell and the heat radiating device arranged outside the bulb shell to radiate the X-ray bulb simultaneously, so that dual heat radiation is realized, the use frequency of the X-ray bulb is further improved on the basis of accelerating the heat radiating efficiency, in addition, the application solves the problems that the dependence of the rotating anode on the bearing is higher and mechanical faults occur easily in the related art, compared with the heat radiating mode in the related art, the heat radiating mode of the application does not need to be provided with other electric parts or structural parts, such as a motor and a bearing, the production cost can be greatly reduced, and meanwhile, the heat radiating mode can also reduce the occupied space of the X-ray bulb, thereby being beneficial to miniaturization of the device.
It is understood that the latent heat of phase change of paraffin refers to the amount of heat absorbed by paraffin when it is converted from a solid state to a liquid state or the amount of heat released by paraffin when it is converted from a liquid state to a solid state over a range of temperatures. Meanwhile, the heat dissipation device can rapidly dissipate the heat of the paraffin when the X-ray tube stops working, and can play a role in heat dissipation when the X-ray tube works, so that the service life of the X-ray tube is prolonged.
In some embodiments, optionally, a portion of the paraffin module wraps around the back side of the anode target.
In the technical scheme, the back of the anode target is wrapped by one part of the paraffin module, the contact area between the paraffin module and the anode target is larger, the heat transfer efficiency is improved, namely, the heat on the anode target is easier to transfer to the paraffin module, so that the paraffin module is subjected to phase change, the heat dissipation efficiency of the anode target can be improved, and the service life of the X-ray tube can be prolonged.
In some embodiments, optionally, the X-ray tube further comprises: the partition piece and three side walls of the bulb shell enclose an accommodating space, and the paraffin module is arranged in the accommodating space; wherein, be provided with the opening on the partition piece, the back of positive pole target stretches into the inside of accommodation space through the opening, and the back of positive pole target contacts with paraffin module.
In this technical scheme, X-ray tube still includes the wall spare, and the accommodation space is established with three lateral walls of bulb casing to the wall spare, and then can set up paraffin module inside accommodation space. Simultaneously, still be provided with the opening on the partition piece, the back of positive pole target can stretch into accommodation space's inside through the opening, has further ensured that positive pole target can contact with paraffin module. In addition, the paraffin module in the accommodating space is in contact with the three side walls of the bulb shell, so that the contact area between the paraffin module and the bulb shell is increased, and the heat of the paraffin module can be dissipated to the outside of the bulb shell more rapidly.
In some embodiments, optionally, the partition is integrally formed with the bulb housing.
In the technical scheme, the partition piece and the bulb shell are of an integrated structure, namely, when the bulb shell is manufactured, the partition piece is directly formed in the bulb shell, and after the bulb shell is manufactured, the partition piece can be welded in the bulb shell, so that an accommodating space is formed. That is, the partition member may be a part of the bulb housing, or may be a part that is subsequently fixedly welded to the inside of the bulb housing, and the integrated partition member and bulb housing can improve the stability of the accommodation space.
In some embodiments, optionally, the paraffin module further comprises: the container is arranged in the bulb shell; wherein, be provided with paraffin in the container, the surface of container is equipped with the opening, and the back of positive pole target stretches into the inside of container through the opening, and the back of positive pole target contacts with paraffin module.
In the technical scheme, the paraffin module further comprises a container, paraffin is arranged in the container, the paraffin module is arranged in the container, an opening is formed in the surface of the container, the back face of the anode target stretches into the container through the opening, and the back face of the anode target is in contact with the paraffin module, so that the contact area of the anode target and the paraffin module is ensured, and the heat dissipation efficiency of the anode target is improved.
In some embodiments, optionally, the X-ray tube further comprises: the expansion device is arranged in the bulb shell and is used for reducing extrusion of the X-ray bulb; the high-voltage transformer is arranged in the bulb shell and used for stabilizing voltage and current; and the filament transformer is arranged in the bulb shell and is used for converting voltage and current.
In this technical scheme, X-ray tube still includes collapsible ware, high voltage transformer and filament transformer, and collapsible ware, high voltage transformer and filament transformer all set up in the inside of bulb casing, and wherein, collapsible ware can reduce self volume after insulating oil thermal expansion to prevent that the inside pressure of X-ray tube from being too big, and then avoid the problem that the X-ray tube takes place to burst. The high voltage transformer is used to stabilize the voltage and current to ensure that the particles produce X-rays after striking the anode target. The filament transformer is used for converting voltage and current, so that the normal operation of the X-ray tube is maintained, and meanwhile, the filament transformer also has the functions of overload protection, short-circuit protection and the like, and the stability and the safety of the X-ray tube are improved.
In some embodiments, optionally, the heat dissipating device includes: one or more of a heat pipe heat sink, an air cooled heat sink and a water cooled heat sink.
In this technical solution, the heat dissipating device includes one or more of a heat pipe heat dissipating device, an air-cooled heat dissipating device, and a water-cooled heat dissipating device. The heat pipe heat dissipating device transfers heat by utilizing the phase change process of the working fluid in the heat pipe, when one end of the heat pipe is heated, the working fluid evaporates into gas, pressure difference is formed in the pipe, and the working fluid is pushed to flow to the other end. When the working fluid cools at the cold end, the gas condenses to a liquid, releasing latent heat and transferring heat to the cold end. The air cooling heat dissipation device is characterized in that a fan is arranged, and heat is conducted from a heating object to the surrounding environment in a natural convection or forced convection mode. The water cooling device is used for conducting heat from a heating object to the surrounding environment through liquid circulation. The X-ray tube heat dissipation device can be particularly used for selecting different types of heat dissipation devices according to actual conditions, and can also be used for simultaneously selecting various heat dissipation devices to dissipate heat of the X-ray tube, so that the selection diversity of users is improved.
In some embodiments, optionally, the heat sink is connected to an outer wall of the bulb housing.
In this technical scheme, heat abstractor is connected with the outer wall of bulb casing. That is, the heat dissipating device is connected to the outer wall of the bulb casing, and heat can be quickly conducted to the heat dissipating device through the bulb casing in such a contact connection manner, so that the heat dissipating efficiency of the X-ray bulb is improved.
In some embodiments, optionally, the material of the bulb housing includes a metal material and a ceramic material.
In this technical scheme, the material of bulb casing includes metal material and ceramic material, specifically can select the bulb casing of different materials according to actual need, selects the bulb casing of metal material to need set up more insulating oil to prevent that the bulb casing is electrified, improve the security. The bulb shell made of ceramic can utilize the characteristic of insulation of ceramic, and a large amount of insulating oil is not required to be arranged, so that the cost is reduced.
In some embodiments, optionally, the material of the bulb shell and the anode target is the same, and the bulb shell and the anode target are integrally formed.
In this technical scheme, generally, the material of positive pole target is the metal material, and when the metal material of bulb casing and the metal material of positive pole target the same, can fix the positive pole target setting on the bulb casing, like selecting the welded mode to fix the positive pole target, can improve the job stabilization nature of positive pole target like this, avoid the fixed potential problem that produces of not firm of positive pole target, also can produce X-ray more steadily simultaneously, improve the reliability of X-ray bulb.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a Dan Laxiang temperature-controlled X-ray tube according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a Dan Laxiang temperature-controlled X-ray tube according to an embodiment of the present invention.
Wherein, the correspondence between the reference numerals and the component names in fig. 1 and 2 is:
the device comprises a 1X-ray bulb tube, a 10 bulb tube shell, a 11 cathode, a 12 anode target, a 13 paraffin module, a 131 container, a 14 partition piece, a 15 accommodating space, a 16 expansion-contraction device, a 17 high-voltage transformer, a 18 filament transformer and a 20 heat radiating device.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. 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.
An embodiment of the first aspect of the present invention provides an X-ray tube 1 with paraffin phase transition temperature control, as shown in fig. 1 and 2, the X-ray tube 1 includes a tube housing 10; a heat sink 20, the heat sink 20 being disposed outside the bulb housing 10; a cathode 11 disposed inside the bulb housing 10; an anode target 12, the front surface of the anode target 12 being disposed opposite to the cathode 11; and the paraffin module 13 is arranged in the bulb shell 10, one end of the paraffin module 13 is connected with the back surface of the anode target 12, and the other end of the paraffin module is connected with the inner wall of the bulb shell 10.
According to the paraffin phase temperature control X-ray bulb tube 1, which comprises a bulb tube shell 10, a heat dissipation device 20, a cathode 11, an anode target 12 and a paraffin module 13, wherein the heat dissipation device 20 is arranged outside the bulb tube shell 10, the cathode 11, the anode target 12 and the paraffin module 13 are arranged inside the bulb tube shell 10, and the front sides of the cathode 11 and the anode target 12 are oppositely arranged so as to ensure that electron beams emitted by the cathode 11 can bombard the anode target 12, and X-rays are generated on the anode target 12. One end of the paraffin block 13 is connected to the back surface of the anode target 12, and the other end is connected to the inner wall of the bulb housing 10. That is, when the X-ray tube 1 is operated, the paraffin module 13 may absorb heat on the anode target 12, and the paraffin is converted from a solid state to a liquid state, thereby reducing the heat of the anode target 12, that is, absorbing the heat of the anode target 12 by using the latent heat of phase change of the paraffin module 13, while the paraffin module 13 is connected to the inner wall of the tube housing 10, and can transfer the heat to the outside of the X-ray tube 1 through the inner wall. In addition, the heat dissipation device 20 arranged outside the bulb housing 10 can dissipate heat of the whole X-ray bulb 1 when the X-ray bulb 1 works, and is beneficial to the conversion of paraffin from liquid state to solid state. Therefore, it is seen that the paraffin module 13 arranged inside the bulb shell 10 and the heat dissipation device 20 arranged outside the bulb shell 10 are utilized to dissipate heat of the X-ray bulb 1, dual heat dissipation is achieved, the use frequency of the X-ray bulb 1 is further improved on the basis of accelerating heat dissipation efficiency, in addition, the problem that the rotating anode has higher dependence on the bearing and mechanical faults easily occur in the related art is solved, compared with the heat dissipation mode in the related art, other electric parts or structural parts such as a motor and a bearing are not required to be arranged in the heat dissipation mode of the X-ray bulb, production cost can be greatly reduced, meanwhile, the occupation space of the X-ray bulb can be reduced by the heat dissipation mode, and the device miniaturization is facilitated.
It is understood that the latent heat of phase change of paraffin refers to the amount of heat absorbed by paraffin when it is converted from a solid state to a liquid state or the amount of heat released by paraffin when it is converted from a liquid state to a solid state over a range of temperatures. Meanwhile, the heat dissipation device 20 can rapidly dissipate the heat of the paraffin when the X-ray tube 1 stops working, and can play a role in heat dissipation when the X-ray tube 1 works, so that the service life of the X-ray tube 1 is prolonged.
In addition, paraffin wax has a relatively low phase transition temperature, typically around 100 ℃, while metal has a relatively high phase transition temperature, such as copper, which has good thermal conductivity, and a melting point, typically around 1083 ℃. That is, although the heat conductivity of the metal is relatively good, the phase transition temperature is relatively high, the metal can be changed to absorb heat on the anode target 12 only when the temperature of the anode target 12 is higher than 1000 ℃, and the heat is further dissipated according to the heat conducting property of the metal when the temperature of the anode target 12 is lower than 1000 ℃, so that the metal material is used as the phase transition latent heat material, and the heat of the anode target 12 can only be absorbed by utilizing the phase transition of the metal material at high temperature. In the present application, paraffin is used as the phase change material, and the phase change temperature is relatively low, so that the heat of the anode target 12 can be absorbed by utilizing the phase change of the paraffin even when the temperature of the anode target 12 is low. Therefore, the paraffin is adopted as the phase change material, and compared with the metal which is adopted as the phase change material, the phase change material can also be utilized to absorb the heat of the anode target 12 when the working time of the X-ray tube 1 is shorter, so that the X-ray tube 1 working in a short time has a remarkable heat dissipation effect.
In some embodiments, optionally, a portion of paraffin module 13 wraps around the back of anode target 12.
In this embodiment, a portion of the paraffin module 13 wraps the back surface of the anode target 12, so that the contact area between the paraffin module 13 and the anode target 12 is larger, which is beneficial to heat transfer efficiency, that is, heat on the anode target 12 is more easily transferred to the paraffin module 13, so that the paraffin module 13 changes phase, and meanwhile, the heat dissipation efficiency of the anode target 12 can be improved, and the service life of the X-ray tube 1 can be prolonged.
In some embodiments, optionally, as shown in fig. 1, the X-ray tube 1 further comprises: the partition piece 14, the partition piece 14 and three side walls of the bulb shell 10 enclose an accommodating space 15, and the paraffin module 13 is arranged in the accommodating space 15; wherein, be provided with the opening on the partition piece 14, the back of anode target 12 stretches into the inside of accommodation space 15 through the opening, and the back of anode target 12 contacts with paraffin module 13.
In this embodiment, the X-ray tube 1 further includes a partition member 14, and the partition member 14 encloses an accommodating space 15 with three side walls of the tube housing 10, so that the paraffin module 13 can be disposed inside the accommodating space 15. At the same time, the partition 14 is further provided with an opening, through which the back surface of the anode target 12 can be inserted into the accommodating space 15, further ensuring that the anode target 12 can be in contact with the paraffin module 13. In addition, the paraffin module 13 in the accommodating space 15 contacts with three side walls of the bulb housing 10, so that the contact area of the paraffin module 13 and the bulb housing 10 is increased, and the heat of the paraffin module 13 can be rapidly dissipated to the outside of the bulb housing 10.
In some embodiments, the partition 14 is optionally integrally formed with the bulb housing 10.
In this embodiment, the partition member 14 and the bulb housing 10 are integrally formed, that is, the partition member 14 is directly formed inside the bulb housing 10 when the bulb housing 10 is manufactured, or the partition member 14 may be welded inside the bulb housing 10 after the bulb housing 10 is manufactured, so as to form the accommodating space 15. That is, the partition 14 may be a part of the bulb housing 10, or may be a part that is subsequently fixedly welded to the inside of the bulb housing 10, and the integrated partition 14 and bulb housing 10 can improve the stability of the receiving space 15.
In some embodiments, optionally, as shown in fig. 2, the paraffin module 13 further comprises: a container 131 provided inside the bulb housing 10; wherein, the container 131 is provided with paraffin, the surface of the container 131 is provided with an opening, the back surface of the anode target 12 extends into the container 131 through the opening, and the back surface of the anode target 12 is contacted with the paraffin module 13.
In this embodiment, the paraffin module 13 further includes a container 131, the container 131 is disposed inside the bulb housing 10, paraffin is disposed in the container 131, an opening is disposed on a surface of the container 131, a back surface of the anode target 12 extends into the container 131 through the opening, and the back surface of the anode target 12 contacts the paraffin module 13, thereby ensuring a contact area between the anode target 12 and the paraffin module 13 and improving heat dissipation efficiency of the anode target 12.
In some embodiments, optionally, a vacuum channel is provided between the cathode 11 and the anode target 12, and in the bulb housing 10, a portion other than the vacuum channel and the paraffin module is filled with insulating oil, that is, the inner portion of the bulb housing 10 is divided into a vacuum portion, an insulating oil portion and a paraffin module portion, the vacuum channel is capable of allowing particles to be emitted from the cathode 11 to the anode target 12, and the insulating oil and the paraffin module 13 cooperate with each other, the paraffin module 13 absorbs heat of the anode target 12 by utilizing its own phase change, the insulating oil and the liquid paraffin are not fused with each other due to different densities, and the liquid paraffin can be sealed at the opening of the container 131 or the partition 14 by using the insulating oil, thereby preventing the paraffin from flowing outside the container 131 or outside the containing space 15 in a liquid state. Through setting up container 131 or enclosing out accommodation space 15 to and adopt insulating oil to seal the opening, can guarantee that liquid paraffin is in container 131 or accommodation space 15, improve the stability in use of X-ray tube 1.
Generally, the density of the solid paraffin is 0.9g/cm 3 The density of the liquid paraffin is lower than that of the solid paraffin, and the density of the insulating oil selected in the scheme is higher than that of the solid paraffin and is generally 0.93g/cm 3 The arrangement direction of the X-ray tube 1 can be set so that the insulating oil is positioned below the paraffin in the vertical direction. By means of density, container 131 or partition 14, the liquid paraffin is simultaneously restricted from flowing intoOutside the container 131 or outside the accommodation space 15.
Of course, the container 131 or the partition 14 may be omitted, and the sealing may be performed by using paraffin alone, but the direction in which the X-ray tube 1 is placed needs to be set so that the insulating oil is located below the paraffin in the vertical direction.
In some embodiments, optionally, as shown in fig. 1 and 2, the X-ray tube 1 further comprises: a collapsible device 16, which is arranged in the bulb shell 10 and is used for reducing the extrusion of the X-ray bulb 1; a high voltage transformer 17 provided inside the bulb housing 10 for stabilizing voltage and current; a filament transformer 18 is provided inside the bulb envelope 10 for converting voltage and current.
In this embodiment, the X-ray tube 1 further includes a collapsible device 16, a high voltage transformer 17 and a filament transformer 18, where the collapsible device 16, the high voltage transformer 17 and the filament transformer 18 are all disposed inside the tube housing 10, and the collapsible device 16 can reduce its volume after the insulating oil is expanded by heating, so as to prevent the pressure inside the X-ray tube 1 from being too high, and further avoid the problem of burst of the X-ray tube 1. The high voltage transformer 17 is used to stabilize the voltage and current to ensure that the particles generate X-rays after striking the anode target 12. The filament transformer 18 is used for converting voltage and current, so that the normal operation of the X-ray tube 1 is maintained, meanwhile, the filament transformer 18 also has the functions of overload protection, short-circuit protection and the like, and the stability and the safety of the X-ray tube 1 are improved.
In some embodiments, optionally, the heat sink 20 comprises: one or more of a heat pipe heat sink, an air cooled heat sink and a water cooled heat sink.
In this embodiment, the heat sink 20 comprises one or more of a heat pipe heat sink, an air cooled heat sink, and a water cooled heat sink. The heat pipe heat dissipating device transfers heat by utilizing the phase change process of the working fluid in the heat pipe, when one end of the heat pipe is heated, the working fluid evaporates into gas, pressure difference is formed in the pipe, and the working fluid is pushed to flow to the other end. When the working fluid cools at the cold end, the gas condenses to a liquid, releasing latent heat and transferring heat to the cold end. The air cooling heat dissipation device is characterized in that a fan is arranged, and heat is conducted from a heating object to the surrounding environment in a natural convection or forced convection mode. The water cooling device is used for conducting heat from a heating object to the surrounding environment through liquid circulation. Specifically, different types of heat dissipation devices can be selected according to actual conditions, and a plurality of heat dissipation devices can be selected to dissipate heat of the X-ray tube 1 at the same time, so that the selection diversity of users is improved.
In some embodiments, optionally, a heat sink 20 is connected to the outer wall of the bulb housing 10.
In this embodiment, the heat sink 20 is connected to the outer wall of the bulb housing 10. That is, the heat sink 20 is connected to the outer wall of the bulb housing 10, and heat can be rapidly conducted into the heat sink 20 through the bulb housing 10 by this contact connection, thereby improving the heat dissipation efficiency of the X-ray bulb 1.
In some embodiments, the materials of the bulb housing 10 optionally include metal materials and ceramic materials.
In this embodiment, the materials of the bulb casing 10 include metal materials and ceramic materials, and the bulb casing 10 with different materials can be specifically selected according to actual needs, and more insulating oil needs to be arranged in the bulb casing 10 with the metal materials, so that the bulb casing 10 is prevented from being electrified, and the safety is improved. The bulb shell 10 made of ceramic material can utilize the characteristic of insulation of ceramic, and does not need to arrange a large amount of insulating oil, thereby reducing cost.
In some embodiments, the bulb housing 10 is optionally the same material as the anode target 12, and the bulb housing 10 is integrally formed with the anode target 12.
In this embodiment, the anode target 12 is generally made of metal, and when the metal material of the bulb casing 10 is the same as that of the anode target 12, the anode target 12 can be fixedly disposed on the bulb casing 10, for example, by selectively welding the anode target 12, so that the working stability of the anode target 12 can be improved, the potential problem caused by the unstable fixation of the anode target 12 can be avoided, meanwhile, the X-ray can be generated more stably, and the reliability of the X-ray bulb 1 can be improved.
Therefore, the invention skillfully utilizes the characteristic of the phase change latent heat of the paraffin, adds the paraffin module 13 near the anode target 12, and achieves the heat dissipation effect by the characteristic that the paraffin is changed from solid to liquid and absorbs heat during the phase change. The paraffin module 13 is combined with the heat dissipation device 20 arranged outside the bulb shell 10, so that heat dissipation can be performed when the bulb shell 10 works, and phase change heat released by paraffin can be absorbed more quickly when the bulb shell 10 is intermittent. The heat dissipation device 20 is not limited to a specific heat dissipation manner, and can be replaced according to specific usage situations, including but not limited to heat dissipation by a heat pipe, heat dissipation by water cooling, and heat dissipation by a common heat dissipation fin, so that the rest gap of the X-ray tube 1 is shortened, and the usage frequency of the X-ray tube 1 is greatly increased. That is, the present application sets up a high-efficient reliable and low-cost cooling system near the anode target 12, and the heat dissipation device 20 can be selected according to the frequency of use of the X-ray tube 1, so as to meet various demands of customers.
Compared with the conventional common radiation heat dissipation, air cooling heat dissipation, water cooling heat dissipation and rotary anode target heat dissipation, the invention has the following remarkable advantages and effects:
the inherent physical characteristic of large paraffin phase transition latent heat is utilized to radiate the heat of the X-ray tube 1, a power device is not required to be additionally arranged, and the design difficulty of the whole device is greatly reduced.
The paraffin is used as a latent heat energy storage material, and the solid-liquid phase change process has the advantages of small volume change, good thermal stability, no supercooling phenomenon, low price and the like, so that the space occupied by a heat dissipation system is greatly reduced, and meanwhile, the production cost is also reduced.
The heat dissipation device 20 not only can actively dissipate heat when the X-ray tube 1 works, but also can release the energy absorbed by paraffin phase change into the air more quickly when the X-ray tube 1 stops working, thereby greatly improving the use frequency of the X-ray tube 1.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An X-ray tube with paraffin phase transition temperature control, comprising:
a bulb shell;
the heat dissipation device is arranged outside the bulb shell;
a cathode arranged in the bulb shell;
an anode target, the front face of which is arranged opposite to the cathode;
and the paraffin module is arranged in the bulb shell, one end of the paraffin module is connected with the back surface of the anode target, and the other end of the paraffin module is connected with the inner wall of the bulb shell.
2. The Dan Laxiang temperature-controlled X-ray tube of claim 1, wherein a portion of the paraffin module wraps around the back of the anode target.
3. The Dan Laxiang temperature-controlled X-ray tube of claim 1, further comprising:
the paraffin module is arranged in the accommodating space;
the partition piece is provided with an opening, the back surface of the anode target stretches into the accommodating space through the opening, and the back surface of the anode target is in contact with the paraffin module.
4. A paraffin phase-change temperature-controlled X-ray tube according to claim 3, wherein the partition is integrally formed with the tube housing.
5. The Dan Laxiang temperature-controlled X-ray tube of claim 1, wherein the paraffin module further comprises:
the container is arranged in the bulb shell;
the paraffin is arranged in the container, an opening is formed in the surface of the container, the back surface of the anode target stretches into the container through the opening, and the back surface of the anode target is in contact with the paraffin module.
6. The Dan Laxiang temperature-controlled X-ray tube of claim 1, further comprising:
the expansion device is arranged in the bulb shell and used for reducing extrusion of the X-ray bulb;
the high-voltage transformer is arranged in the bulb shell and used for stabilizing voltage and current;
and the filament transformer is arranged in the bulb shell and is used for converting voltage and current.
7. The Dan Laxiang temperature-controlled X-ray tube according to any one of claims 1 to 6, wherein the heat sink comprises:
one or more of a heat pipe heat sink, an air cooled heat sink and a water cooled heat sink.
8. The Dan Laxiang temperature-controlled X-ray tube according to any one of claims 1 to 6, wherein the heat sink is connected to an outer wall of the tube housing.
9. The Dan Laxiang temperature-controlled X-ray tube of claim 1, wherein the tube housing comprises a metal material and a ceramic material.
10. The Dan Laxiang temperature-controlled X-ray tube of claim 1, wherein the tube housing is the same material as the anode target, and the tube housing is integrally formed with the anode target.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410207260.XA CN117790267B (en) | 2024-02-26 | 2024-02-26 | Paraffin phase-change temperature-controlled X-ray tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410207260.XA CN117790267B (en) | 2024-02-26 | 2024-02-26 | Paraffin phase-change temperature-controlled X-ray tube |
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| CN117790267A true CN117790267A (en) | 2024-03-29 |
| CN117790267B CN117790267B (en) | 2024-05-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10064341A1 (en) * | 2000-12-21 | 2002-07-04 | Siemens Ag | X-ray tube has rotatable vacuum housing and anode connected to vacuum housing, whereby anode has latent heat storage device with thermally conductive connection to anode |
| WO2013014123A1 (en) * | 2011-07-27 | 2013-01-31 | Siemens Aktiengesellschaft | X-ray tube and method for the production thereof |
| DE102011082685A1 (en) * | 2011-09-14 | 2013-03-14 | Siemens Aktiengesellschaft | Anode device, useful for X-ray tube, comprises anode body comprising focal spot range, receiving device that is attached at anode body in area adjacent to focal spot range, and latent heat storage element arranged in receiving device |
| CN103997839A (en) * | 2014-06-06 | 2014-08-20 | 同方威视技术股份有限公司 | Collimation modulating X-ray generator |
| CN112641454A (en) * | 2020-12-28 | 2021-04-13 | 西姆高新技术（江苏）有限公司 | Bulb tube assembly and X-ray machine |
-
2024
- 2024-02-26 CN CN202410207260.XA patent/CN117790267B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10064341A1 (en) * | 2000-12-21 | 2002-07-04 | Siemens Ag | X-ray tube has rotatable vacuum housing and anode connected to vacuum housing, whereby anode has latent heat storage device with thermally conductive connection to anode |
| WO2013014123A1 (en) * | 2011-07-27 | 2013-01-31 | Siemens Aktiengesellschaft | X-ray tube and method for the production thereof |
| DE102011082685A1 (en) * | 2011-09-14 | 2013-03-14 | Siemens Aktiengesellschaft | Anode device, useful for X-ray tube, comprises anode body comprising focal spot range, receiving device that is attached at anode body in area adjacent to focal spot range, and latent heat storage element arranged in receiving device |
| CN103997839A (en) * | 2014-06-06 | 2014-08-20 | 同方威视技术股份有限公司 | Collimation modulating X-ray generator |
| CN112641454A (en) * | 2020-12-28 | 2021-04-13 | 西姆高新技术（江苏）有限公司 | Bulb tube assembly and X-ray machine |
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| CN117790267B (en) | 2024-05-14 |
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