CN116544087A - Medical X-ray tube system - Google Patents
Medical X-ray tube system Download PDFInfo
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- CN116544087A CN116544087A CN202310522680.2A CN202310522680A CN116544087A CN 116544087 A CN116544087 A CN 116544087A CN 202310522680 A CN202310522680 A CN 202310522680A CN 116544087 A CN116544087 A CN 116544087A
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- 230000001681 protective effect Effects 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 238000010894 electron beam technology Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims 1
- 230000006872 improvement Effects 0.000 description 14
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000003466 welding Methods 0.000 description 8
- 230000005855 radiation Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 239000000306 component Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000002784 hot electron Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000005461 Bremsstrahlung Effects 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/112—Non-rotating anodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/06—Cathodes
- H01J35/064—Details of the emitter, e.g. material or structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/12—Cooling non-rotary anodes
- H01J35/13—Active cooling, e.g. fluid flow, heat pipes
Abstract
The invention discloses a medical X-ray tube system, which comprises a protective shell, an X-ray tube core and a heat exchange system, wherein the X-ray tube core comprises a tube shell, a cathode assembly and an anode assembly, a vacuum sealing cavity is formed in the tube shell, the cathode assembly is provided with an emitting piece which is arranged in the vacuum sealing cavity, the anode assembly is provided with a target disc which is arranged in the vacuum sealing cavity, and a first ray window is arranged on the tube shell; the heat exchange system is respectively connected with the oil inlet A and the oil outlet A of the protective shell to form a passage for the circulation flow of insulating oil; in particular, the emitting part can rotate relative to the tube shell, and the target disc is fixed relative to the tube shell; at least one of the oil inlet A and the oil outlet A of the protective shell is provided with a spraying piece which can cause turbulent flow of the flowing insulating oil. The medical X-ray tube system can timely conduct out heat, improves the heat conduction rate, reduces the heat damage to the bearing assembly, thereby improving the reliability and quality of the X-ray tube core during operation and prolonging the service life of the X-ray tube core.
Description
Technical Field
The invention relates to the technical field of medical X-ray tubes, in particular to a medical X-ray tube system with good reliability and heat dissipation.
Background
As is known, a medical X-ray tube system comprises a protective housing, an X-ray tube core, a heat exchange system and an electrical connection system, wherein the X-ray tube core is a core component and mainly comprises a vacuum tube shell, a cathode assembly and an anode assembly, wherein the cathode assembly comprises a filament and the like, and the anode assembly comprises a target plate and the like. And the working principle of the X-ray tube core is as follows: the external power supply supplies power to the filament, the filament generates a hot electron beam after being electrified, the hot electron beam impacts the target disc at a high speed under the action of a high-voltage electric field, and X rays are generated through bremsstrahlung and emitted from a window on the vacuum tube shell, so that imaging is realized.
From the above, the X-ray tube core is capable of converting electrical energy into X-rays. But this energy conversion efficiency is low because a substantial portion of the energy is converted to heat. Thus, to ensure the service life and operational reliability of the target disk, and thus of the entire X-ray tube core, it is common today to design the filament stationary, the target disk rotatable, i.e.: the filament is fixedly arranged in the vacuum tube shell, and the target disc is rotationally arranged in the vacuum tube shell through a bearing assembly. The design mode can realize that the position points of the electron beam bombarded on the target disc are not unique, and can be presented as an annular track, so that heat can be dispersed, and the X-ray tube core can support the use requirement of higher power.
However, existing medical X-ray tube systems have some drawbacks during application, such as: (1) because the target disk is built into the vacuum envelope, this requires that the bearing assembly only use a dry lubricated ball bearing (typically, the ball surface will be plated with a lubricious lead or silver coating). However, the heat generated by the target disc can raise the temperature of the whole bearing assembly through heat conduction and heat radiation, which may cause melting of a coating on the ball bearing and jamming of the bearing, so that the target disc is caused to rotate, jam or unable to rotate, and the heat generated by the anode assembly cannot be led out timely, which seriously affects the service life and the working reliability of the X-ray tube core. (2) Insulating oil (typically high voltage transformer oil) in a heat exchange system is used to exchange (cool) and insulate the X-ray tube core during operation. Based on the existing protective shell structure, the flowing state of the insulating oil in the oil inlet and the oil outlet of the protective shell is approximate to laminar flow (see the state shown in fig. 7), so that the flow velocity of the insulating oil is maximum on the central line of the oil inlet and the oil outlet and gradually decreases along the radial directions of the oil inlet and the oil outlet, and when the wall of the oil inlet and the oil outlet is reached, the flow velocity of the insulating oil is very small and almost zero due to the viscosity of the insulating oil, so that the heat exchange efficiency between the insulating oil and the oil inlet and the oil outlet is poor, the heat dissipation efficiency of the whole medical X-ray tube system is affected, and the service life and the working reliability of a product are further affected.
In view of this, the present invention has been made.
Disclosure of Invention
In order to overcome the defects, the invention provides a medical X-ray tube system which can timely lead out heat, greatly improve the heat conduction rate and effectively reduce the heat damage to a bearing assembly, thereby greatly improving the reliability and quality of the X-ray tube core during operation and prolonging the service life of the X-ray tube core.
The technical scheme adopted by the invention for solving the technical problems is as follows: a medical X-ray tube system, comprising a protective shell, an X-ray tube core and a heat exchange system, wherein the X-ray tube core is arranged in the protective shell, the X-ray tube core comprises a tube shell, a cathode component and an anode component, a vacuum sealing cavity is formed in the tube shell, the cathode component is provided with an emitting piece arranged in the vacuum sealing cavity, the emitting piece can generate an electron beam after being electrified, the anode component is provided with a target disc arranged in the vacuum sealing cavity, the target disc can receive the electron beam emitted by the emitting piece to generate X-rays, and a first ray window for X-ray emission is further arranged on the tube shell; the heat exchange system is respectively connected with the oil inlet A and the oil outlet A of the protective shell to form a passage for the circulation flow of insulating oil; the emitting piece can rotate relative to the tube shell, and the target disc is fixed relative to the tube shell; at least one of the oil inlet A and the oil outlet A of the protective shell is provided with a spraying piece which can cause turbulent flow of the flowing insulating oil.
As a further improvement of the invention, the cathode assembly is further provided with a cathode seat, a connecting support and a driving piece, wherein the cathode seat and the connecting support are both arranged in the vacuum sealing cavity, the cathode seat is used for bearing the emitting piece, the connecting support is respectively connected with the cathode seat and the driving piece, and the driving piece can also drive the connecting support and the cathode seat to rotate together.
As a further improvement of the invention, the driving piece is provided with a rotor, a stator coil and a supporting rotating assembly, wherein the rotor is arranged in the vacuum sealing cavity and is rotationally connected to the inner wall of the tube shell through the supporting rotating assembly; the stator coil is fixedly arranged outside the tube shell, and meanwhile, the stator coil is also arranged outside the rotor in a surrounding manner; one end of the connecting support is fixedly connected with the rotor, and the other end of the connecting support is fixedly connected with the cathode seat.
As a further improvement of the invention, the supporting and rotating assembly is provided with a bearing seat, a bearing and a rotating shaft, wherein the bearing seat is also arranged in the vacuum sealing cavity and is fixedly connected to the inner wall of the tube shell; one end of the rotating shaft is rotatably arranged in the bearing seat through the bearing;
the rotor is a hollow structure body with one side open, the rotor is sleeved outside the bearing seat part, and meanwhile, the rotor is fixedly connected with the other end of the rotating shaft.
As a further development of the invention, the emitter element is fixedly arranged on the side of the cathode holder facing away from the connecting carrier.
As a further improvement of the invention, the anode assembly is also provided with a support column, the support column is arranged in the vacuum sealing cavity, one end of the support column is fixedly connected with the target disc, and the other end of the support column is respectively and fixedly connected with the tube shell and the protective shell in a sealing way.
As a further improvement of the invention, the spraying pieces are respectively arranged at the oil inlet A and the oil outlet A of the protective shell.
As a further improvement of the invention, the spray piece is provided with a body with an arc surface structure and a plurality of spray holes arranged on the body;
the two bodies are respectively and fixedly arranged at the oil inlet A and the oil outlet A of the protective shell, and simultaneously the arc-shaped protruding directions of the two bodies are respectively consistent with the flowing direction of insulating oil flowing through the bodies.
As a further improvement of the invention, a second ray window for X-rays to be emitted is also arranged on the protective shell, and the second ray window is aligned with the first ray window.
As a further improvement of the invention, the heat exchange system is provided with an oil pipe, a filter, an oil pump and a heat exchanger, wherein an oil inlet B and an oil outlet B of the oil pipe are respectively and correspondingly connected and communicated with an oil outlet A and an oil inlet A of the protective shell in a sealing way, the filter, the oil pump and the heat exchanger are sequentially connected to the oil pipe at intervals, the filter is also close to the oil inlet B of the oil pipe, and the heat exchanger is also close to the oil outlet B of the oil pipe.
The beneficial effects of the invention are as follows: compared with the prior art, 1) the invention improves the structure of the X-ray tube core by: the emitting element is designed to be rotatable and the target disk is designed to be stationary. The structural improvement is based on the effects that the position points of the electron beam bombardment on the target disk are not unique and the heat dispersion can be realized, and the heat damage to the bearing assembly is greatly reduced, so that the reliability and the quality of the X-ray tube core during the work can be greatly improved, and the service life of the X-ray tube core is prolonged; in addition, by means of the structural improvement of the X-ray tube core, the contact area between the target disc and the support column can be increased, so that the heat conduction rate is greatly improved, heat generated during the operation of the X-ray tube core can be timely led out, the reliability and the quality of the X-ray tube core during the operation are further improved, and the service life of the X-ray tube core is prolonged. 2) According to the invention, the injection piece capable of enabling the flowing insulating oil to generate turbulence is arranged at the oil inlet A and/or the oil outlet A of the protective shell, so that the heat exchange efficiency between the insulating oil and the protective shell can be well improved, heat generated during the operation of the X-ray tube core can be timely led out, the reliability and quality of the X-ray tube core during the operation can be improved, and the service life of the X-ray tube core can be prolonged. 3) The medical X-ray tube system has the advantages of simple, reasonable and novel structure improvement, easy processing and manufacturing, low manufacturing cost and contribution to popularization and implementation.
Drawings
FIG. 1 is a schematic view of a medical X-ray tube system according to the present invention;
FIG. 2 is an enlarged schematic view of the X-ray tube core shown in FIG. 1;
FIG. 3 is an enlarged schematic view of the cathode assembly shown in FIG. 2;
FIG. 4 is an enlarged schematic view of the portion A shown in FIG. 1;
FIG. 5 is an enlarged schematic view of the portion B shown in FIG. 1;
FIG. 6 is a schematic illustration of a liquid in a turbulent state;
fig. 7 is a schematic view of a liquid in a laminar flow state.
The following description is made with reference to the accompanying drawings:
1. a protective housing; 10. a case main body; 11. an oil inlet A; 12. an oil outlet A;
2. an X-ray tube core; 20. a tube shell; 21. a cathode assembly; 210. a transmitting member; 211. a cathode base; 212. a connecting bracket; 213. a rotor; 214. a stator coil; 215. a bearing seat; 216. a bearing; 217. a rotating shaft; 22. an anode assembly; 220. a target plate; 221. a support column; 3. a heat exchange system; 30. an oil pipe; 31. a filter; 32. an oil pump; 33. a heat exchanger; 4. a spray member; 40. a body; 41. and an injection hole.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples:
referring to fig. 1 to 5, the present invention provides a medical X-ray tube system, including a protective housing 1, an X-ray tube core 2 and a heat exchange system 3, wherein the X-ray tube core 2 is disposed in the protective housing 1, the X-ray tube core 2 includes a tube housing 20, a cathode assembly 21 and an anode assembly 22, a vacuum sealing cavity is formed in the tube housing 20, the cathode assembly 21 has an emitter 210 disposed in the vacuum sealing cavity, the emitter 210 can generate an electron beam after being energized, the anode assembly 22 has a target plate 220 disposed in the vacuum sealing cavity, the target plate 220 is disposed opposite to the emitter 210 and can receive the electron beam emitted by the emitter 210 to generate X-rays, and a first radiation window for X-rays is further disposed on the tube housing 20; the heat exchange system 3 is respectively connected with the oil inlet A and the oil outlet A of the protective shell 1 to form a passage for the circulation flow of insulating oil; in particular, the launching member 210 is rotatable relative to the envelope 20, and the target plate 220 is positionally fixed relative to the envelope 20; at least one of the oil inlet a and the oil outlet a of the protective housing 1 is provided with a spray member 4 capable of causing turbulence of the flowing insulating oil.
Compared with the prior art, the medical X-ray tube system provided by the invention has the following advantages: (1) the invention improves the structure of the X-ray tube core: the emitting element is designed to be rotatable and the target disk is designed to be stationary. The structural improvement greatly reduces the heat damage to the bearing assembly on the basis of realizing the effects that the position points of the electron beam bombardment on the target disc are not unique and the heat can be dispersed (which means that the heat energy generated by the target disc is transmitted to the cathode assembly through heat radiation during operation, but the heat damage to the bearing assembly caused by the heat transmitted in the past has very low heat radiation efficiency), thereby greatly improving the reliability and the quality of the X-ray tube core during operation and prolonging the service life of the X-ray tube core; in addition, by means of the structural improvement of the X-ray tube core, the contact area between the target disc and the supporting column can be increased (in the existing structure, the point contact between the rotating shaft fixedly connected with the target disc and the ball bearing of the bearing assembly is equivalent, the heat conduction efficiency is low), so that the heat conduction rate is greatly improved, heat generated during the operation of the X-ray tube core can be timely led out, the reliability and the quality during the operation of the X-ray tube core are further improved, and the service life of the X-ray tube core is prolonged. (2) According to the invention, the injection piece (the turbulence state is shown in the figure 6) capable of enabling the flowing insulating oil to generate turbulence is arranged at the oil inlet A and/or the oil outlet A of the protective shell, so that the heat exchange efficiency between the insulating oil and the protective shell can be well improved, heat generated during the operation of the X-ray tube core can be timely led out, the reliability and the quality of the X-ray tube core during the operation are improved, and the service life of the X-ray tube core is prolonged.
The specific structure of the medical X-ray tube system according to the present invention will be described in detail below.
First, the structure of the X-ray tube core 2 will be described in detail.
With continued reference to fig. 2 and 3, in the X-ray tube core 2, the structure for enabling the emitter 210 to rotate relative to the tube housing 20 is as follows: the cathode assembly 21 further comprises a cathode base 211, a connecting support 212 and a driving member, wherein the cathode base 211 and the connecting support 212 are both arranged in the vacuum sealing cavity, the cathode base 211 is used for receiving the emitting member 210, the connecting support 212 is respectively connected with the cathode base 211 and the driving member, and the driving member can also drive the connecting support 212 and the cathode base 211 to rotate together.
Further preferably, the structure for enabling the driving member to drive the connection bracket 212 and the cathode base 211 to rotate together is as follows: with continued reference to fig. 2 and 3, the driving member has a rotor 213, a stator coil 214, and a support rotating assembly, wherein the rotor 213 is disposed in the vacuum sealed cavity and is rotatably connected to the inner wall of the housing 20 through the support rotating assembly; the stator coil 214 is fixedly arranged outside the tube shell 20, meanwhile, the stator coil 214 is also arranged outside the rotor 213 in a surrounding manner, and the stator coil 214 is also electrically connected to three alternating current output ends of the three-phase frequency converter; one end of the connecting bracket 212 is fixedly connected with the rotor 213 (for example, a connection manner such as welding or integral connection may be adopted), and the other end of the connecting bracket 212 is fixedly connected with the cathode base 211 (for example, a connection manner such as welding or integral connection may be adopted).
Still further preferably, the rotor is rotatably connected to the inner wall of the housing 20 by the support rotating assembly, and has a structure that: with continued reference to fig. 2 and 3, the supporting and rotating assembly has a bearing seat 215, a bearing 216 and a rotating shaft 217, where the bearing seat 215 is also disposed in the vacuum sealing cavity and is fixedly connected to the inner wall of the tube shell 20 (the fixed connection mode may be any one of welding and fastening, riveting with rivets and screwing with screws); one end of the rotating shaft 217 is rotatably mounted in the bearing seat 215 through the bearing 216; the rotor 213 is a hollow structure with one open side, the rotor 213 is sleeved outside the bearing seat 215, and at the same time, the rotor 213 is fixedly connected with the other end of the rotating shaft 217 (the fixed connection mode may be any one of welding, riveting with rivets and screwing with screws).
The stator coil 214 is fixedly arranged outside the tube housing 20, and has the following structure: the coil support around which the stator coil 214 is wound is fixedly connected to the outer wall of the housing 20.
In addition, in the structure of the cathode assembly 21, the material of the emitter 210 may preferably be any one of tungsten, doped tungsten and tungsten alloy, and the shape of the emitter 210 may preferably be any one of spiral coil, flat plate type and D shape; in particular, the emitter 210 may preferably be a spiral coil-shaped filament structure made of tungsten material. The emitter 210 is fixedly disposed on a side of the cathode base 211 facing away from the connection bracket 212, and the fixing manner may be any one of welding, riveting and screw connection.
Continuing to refer to fig. 2, in the X-ray tube core 2, the structure for fixing the position of the target disc 220 relative to the tube shell 20 is as follows: the anode assembly 22 further has a support column 221, the support column 221 is disposed in the vacuum sealing cavity, one end of the support column 221 is fixedly connected with one side of the target disc 220, which faces away from the emitter 210, and the other end of the support column 221 is respectively and fixedly connected with the tube shell 20 and the protective housing 1 in a sealing manner by a fastener (the fastener may be a rivet or a screw). Of course, besides the fastening piece connection, a fixed connection mode such as welding can be adopted.
In addition, as shown in fig. 2, based on the vertical placement state of the X-ray tube core 2, the vacuum sealing cavity may be divided into three chambers, namely an upper chamber, a middle chamber and a lower chamber, which are sequentially communicated; wherein the connection bracket 212, the cathode holder 211, the emitter 210 and the target plate 220 are all disposed in the middle chamber; the bearing seat 215 and the bearing 216 are both arranged in the upper chamber, and the rotating shaft 217 and the rotor 213 are both arranged in the upper chamber and the middle chamber in a penetrating way; the support columns 221 are disposed through the middle chamber and the lower chamber.
Next, the structures of the protective case 1 and the spouting member 4 will be described in detail.
Continuing to refer to fig. 1, the protective housing 1 includes a housing main body 10, and an oil inlet a11 and an oil outlet a12 respectively fixedly connected to the housing main body 10, where the fixed connection mode may be an integral processing forming mode or a welding and fixing mode. A second radiation window for X-rays to be emitted is provided on the case main body 10 of the protective case 1, and the second radiation window is aligned with the first radiation window.
In particular, as shown in fig. 1, the spray members 4 are respectively disposed at the oil inlet a11 and the oil outlet a12 of the protective housing 1. As shown in fig. 4 and fig. 5, the two spraying members 4 each have a body 40 with a cambered surface structure and a plurality of spraying holes 41 formed on the body 40, the two bodies 40 are respectively and fixedly arranged at the positions of the oil inlet a11 and the oil outlet a12 of the protective housing 1, and meanwhile, the cambered protruding directions of the two bodies 40 are respectively consistent with the flowing direction of the insulating oil flowing through the bodies.
Further preferably, one of the bodies 40 is fixedly covered on the inner side of the oil inlet a11 of the protective housing 1 (see fig. 4), and the other body 40 is fixedly arranged in the oil outlet a12 of the protective housing 1 (see fig. 5); and the fixing mode can be an integral processing forming mode or a welding fixing mode.
By providing the spouting member 4 at the oil inlet a and the oil outlet a of the protective housing 1, respectively, turbulence is generated in the insulating oil flowing therethrough (turbulence state can be seen from fig. 6); by means of the generated turbulence, on one hand, the flowing speed and the flowing kinetic energy of the insulating oil can be well improved, and in addition, the whole of the spraying piece is in a cambered surface shape, so that a plurality of insulating oil streams can be sprayed and quickly flow towards the inner wall of the protective shell 1, and the heat exchange efficiency between the insulating oil and the inner wall of the protective shell 1 is improved; on the other hand, the heat exchange efficiency among the insulating oil particles can be improved. Of course, in addition to the injection member 4 being provided at the oil inlet a and the oil outlet a of the protective housing 1, the injection member 4 may be provided in the oil pipe 30 of the heat exchange system 3, specifically as follows: the injector 4 may be provided at the oil outlet B of the oil pipe 30 to further increase the flow velocity and flow kinetic energy of the insulating oil into the protective housing 1.
Further preferably, the injection hole 41 is a circular hole; the sections of the oil inlet A11 and the oil outlet A12 of the protective housing 1 are circular, and the body 40 is divided into three areas along the radial direction of the oil inlet A or the oil outlet A, namely an inner area, a middle area and an outer area; and the hole diameter of the injection hole 41 located on the inner region is smaller than the hole diameter of the injection hole 41 located on the middle region, and the hole diameter of the injection hole 41 located on the outer region is larger than the hole diameter of the injection hole 41 located on the middle region. The pore size is set in accordance with the viscosity and flow rate of the insulating oil, and in general, the flow rate of the liquid is greatest on the center line of the tube and gradually decreases in the radial direction of the tube.
Of course, instead of using a circular hole, the injection hole 41 may also use a kidney-shaped hole, a spiral-shaped hole, or other shapes.
Next, the structure of the heat exchange system 3 will be described in detail.
With continued reference to fig. 1, fig. 4 and fig. 5, the heat exchange system 3 has an oil pipe 30, a filter 31, an oil pump 32 and a heat exchanger 33, where an oil inlet B and an oil outlet B of the oil pipe 30 are respectively and hermetically connected and communicated with an oil outlet a12 and an oil inlet a11 of the protecting housing 1, that is: the oil inlet B of the oil pipe 30 is in sealing connection and communication with the oil outlet A12 of the protective shell 1, and the oil outlet B of the oil pipe 30 is in sealing connection and communication with the oil inlet A11 of the protective shell 1; the filter 31, the oil pump 32 and the heat exchanger 33 are sequentially connected to the oil pipe 30 at intervals, the filter 31 is also close to the oil inlet B of the oil pipe 30 (i.e. close to the oil outlet a12 of the protecting housing 1), the heat exchanger 33 is also close to the oil outlet B of the oil pipe 30 (i.e. close to the oil inlet a11 of the protecting housing 1), and the oil pump 32 is connected between the clean oil outlet of the filter 31 and the oil inlet of the heat exchanger 33.
Description: (1) at the time of production assembly of the medical X-ray tube system, insulating oil is injected into the oil pipe 30; (2) the filter 31 is used for filtering the insulating oil, ensuring the purity of the oil entering the protective housing 1, and further avoiding the defects of breakdown of the X-ray tube core caused by impure oil, reduced pressure resistance of the insulating oil and the like, so as to prolong the service life of the X-ray tube core. In addition, the filter 31 is detachably and fixedly connected with the oil pipe 30 through a quick-release member (such as a quick-release buckle), so that daily cleaning, maintenance and repair are facilitated. (3) The heat exchanger 33 is used for cooling the insulating oil.
In summary, on one hand, the medical X-ray tube system can timely lead out heat, greatly improve the heat conduction rate, and effectively reduce the heat damage to the bearing assembly, thereby greatly improving the reliability and quality of the X-ray tube core during operation and prolonging the service life of the X-ray tube core; on the other hand, the medical X-ray tube system has the advantages of simple, reasonable and novel structure improvement, easy processing and manufacturing, low manufacturing cost and contribution to popularization and implementation.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The foregoing description is only of a preferred embodiment of the invention, which can be practiced in many other ways than as described herein, so that the invention is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention without departing from the technical solution of the present invention still falls within the scope of the technical solution of the present invention.
Claims (10)
1. A medical X-ray tube system comprising a protective housing (1), an X-ray tube core (2) and a heat exchange system (3), wherein the X-ray tube core (2) is arranged in the protective housing (1), the X-ray tube core (2) comprises a tube shell (20), a cathode assembly (21) and an anode assembly (22), a vacuum sealing cavity is formed in the tube shell (20), the cathode assembly (21) is provided with an emitting piece (210) arranged in the vacuum sealing cavity, the emitting piece (210) can generate an electron beam after being electrified, the anode assembly (22) is provided with a target disc (220) arranged in the vacuum sealing cavity, the target disc (220) can receive the electron beam emitted by the emitting piece (210) so as to generate X-rays, and a first ray window for the X-rays to emit is further arranged on the tube shell (20); the heat exchange system (3) is respectively connected with the oil inlet A and the oil outlet A of the protective shell (1) to form a passage for the circulation flow of insulating oil; the method is characterized in that: the launching element (210) can rotate relative to the envelope (20), and the target disk (220) is fixed in position relative to the envelope (20); at least one of the oil inlet A and the oil outlet A of the protective shell (1) is provided with a spraying piece (4) which can cause turbulent flow of the flowing insulating oil.
2. The medical X-ray tube system according to claim 1, wherein: the cathode assembly (21) is further provided with a cathode seat (211), a connecting support (212) and a driving piece, the cathode seat (211) and the connecting support (212) are both arranged in the vacuum sealing cavity, the cathode seat (211) is used for bearing the emitting piece (210), the connecting support (212) is respectively connected with the cathode seat (211) and the driving piece, and the driving piece can also drive the connecting support (212) and the cathode seat (211) to rotate together.
3. The medical X-ray tube system according to claim 2, wherein: the driving piece is provided with a rotor (213), a stator coil (214) and a supporting rotating assembly, wherein the rotor (213) is arranged in the vacuum sealing cavity and is rotationally connected to the inner wall of the tube shell (20) through the supporting rotating assembly; the stator coil (214) is fixedly arranged outside the tube shell (20), and meanwhile, the stator coil (214) is also arranged outside the rotor (213) in a surrounding manner;
one end of the connecting bracket (212) is fixedly connected with the rotor (213), and the other end of the connecting bracket (212) is fixedly connected with the cathode base (211).
4. A medical X-ray tube system according to claim 3, characterized in that: the supporting and rotating assembly is provided with a bearing seat (215), a bearing (216) and a rotating shaft (217), wherein the bearing seat (215) is also arranged in the vacuum sealing cavity and is fixedly connected to the inner wall of the tube shell (20); one end of the rotating shaft (217) is rotatably arranged in the bearing seat (215) through the bearing (216);
the rotor (213) is a hollow structure body with one side open, the rotor (213) is sleeved outside the bearing seat (215), and meanwhile, the rotor (213) is fixedly connected with the other end of the rotating shaft (217).
5. The medical X-ray tube system according to claim 2, wherein: the emitting piece (210) is fixedly arranged on one side of the cathode base (211) which faces away from the connecting bracket (212).
6. The medical X-ray tube system according to claim 1, wherein: the anode assembly (22) is further provided with a support column (221), the support column (221) is arranged in the vacuum sealing cavity, one end of the support column (221) is fixedly connected with the target disc (220), and the other end of the support column (221) is respectively and fixedly connected with the tube shell (20) and the protective shell (1) in a sealing mode.
7. The medical X-ray tube system according to claim 1, wherein: the spraying parts (4) are respectively arranged at the oil inlet A and the oil outlet A of the protective shell (1).
8. The medical X-ray tube system according to claim 7, wherein: the spraying piece (4) is provided with a body (40) with an arc surface structure and a plurality of spraying holes (41) arranged on the body (40);
the two bodies (40) are respectively and fixedly arranged at an oil inlet A and an oil outlet A of the protective shell (1), and meanwhile, the arc-shaped protruding directions of the two bodies (40) are respectively consistent with the flowing direction of insulating oil flowing through the bodies.
9. The medical X-ray tube system according to claim 1, wherein: the protective shell (1) is also provided with a second ray window for X-rays to emit, and the second ray window is arranged in alignment with the first ray window.
10. The medical X-ray tube system according to claim 1, wherein: the heat exchange system (3) is provided with an oil pipe (30), a filter (31), an oil pump (32) and a heat exchanger (33), an oil inlet B and an oil outlet B of the oil pipe (30) are respectively and correspondingly connected with an oil outlet A and an oil inlet A of the protective housing (1) in a sealing way and are communicated, the filter (31), the oil pump (32) and the heat exchanger (33) are sequentially connected to the oil pipe (30) at intervals, the filter (31) is also close to the oil inlet B of the oil pipe (30), and the heat exchanger (33) is also close to the oil outlet B of the oil pipe (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310522680.2A CN116544087A (en) | 2023-05-10 | 2023-05-10 | Medical X-ray tube system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310522680.2A CN116544087A (en) | 2023-05-10 | 2023-05-10 | Medical X-ray tube system |
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| Publication Number | Publication Date |
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| CN116544087A true CN116544087A (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310522680.2A Pending CN116544087A (en) | 2023-05-10 | 2023-05-10 | Medical X-ray tube system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117015221A (en) * | 2023-10-07 | 2023-11-07 | 苏州益腾电子科技有限公司 | X-ray tube and X-ray tube system |
| CN117253765A (en) * | 2023-11-09 | 2023-12-19 | 苏州益腾电子科技有限公司 | X-ray tube and CT machine |
-
2023
- 2023-05-10 CN CN202310522680.2A patent/CN116544087A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117015221A (en) * | 2023-10-07 | 2023-11-07 | 苏州益腾电子科技有限公司 | X-ray tube and X-ray tube system |
| CN117015221B (en) * | 2023-10-07 | 2024-01-30 | 苏州益腾电子科技有限公司 | X-ray tube and X-ray tube system |
| CN117253765A (en) * | 2023-11-09 | 2023-12-19 | 苏州益腾电子科技有限公司 | X-ray tube and CT machine |
| CN117253765B (en) * | 2023-11-09 | 2024-01-30 | 苏州益腾电子科技有限公司 | X-ray tube and CT machine |
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