CN202434460U - Environmental-friendly CT (Computed Tomography) metal X-ray tube - Google Patents
Environmental-friendly CT (Computed Tomography) metal X-ray tube Download PDFInfo
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- CN202434460U CN202434460U CN2011205389516U CN201120538951U CN202434460U CN 202434460 U CN202434460 U CN 202434460U CN 2011205389516 U CN2011205389516 U CN 2011205389516U CN 201120538951 U CN201120538951 U CN 201120538951U CN 202434460 U CN202434460 U CN 202434460U
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 title claims abstract description 19
- 238000002591 computed tomography Methods 0.000 title abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 45
- 229910000833 kovar Inorganic materials 0.000 claims abstract description 15
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 9
- 239000011733 molybdenum Substances 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 7
- 229910000691 Re alloy Inorganic materials 0.000 claims description 7
- DECCZIUVGMLHKQ-UHFFFAOYSA-N rhenium tungsten Chemical compound [W].[Re] DECCZIUVGMLHKQ-UHFFFAOYSA-N 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 238000005219 brazing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 16
- 238000010894 electron beam technology Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 208000003351 Melanosis Diseases 0.000 description 1
- 235000012364 Peperomia pellucida Nutrition 0.000 description 1
- 240000007711 Peperomia pellucida Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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Abstract
The utility model relates to an environmental-friendly CT (Computed Tomography) metal X-ray tube, which comprises an anode, a cathode and a glass shell, wherein the anode and the cathode are respectively located on both sides in the glass shell. The anode comprises a target disc, a rotor, a bearing and an anode Kovar ring, the centre of the target disc is fixed at the top end of the rotor and fixed by a molybdenum nut. One end of the anode Kovar ring is connected with the bearing in the rotor, and the other end of the anode Kovar ring is connected with the glass shell. The cathode comprises a lamp filament, a cathode head, a cathode ring, a cathode cap, a cathode drum, a cathode Kovar and a getter. The target disc is a single convex disc and the target surface has an inclined angle. According to the utility model, the conventional product structure is subjected to revolutionary improvement, so that performance stability of the CT X line tube is improved and the service life is prolonged. The environmental-friendly CT metal X-ray tube can effectively prevent radiation of scattered rays from harming a human body when transmitting rays, and is green and environmental-friendly. Owing to a specific internal thread mouth fixing structure and a Kovar structure of the anode, the CT X line tube can be assorted to any manufacturers and any sleeve types, and compatibility of the CT X line tube is unique.
Description
Technical field
The utility model relates to the X line imaging field in the modern medicine iconography, is specifically related to a kind of environment-friendly type CT metal X spool, belongs to International Classification of Patents A61B technical field.
Background technology
X line computation body layer imaging device (X-Ray computed tomography; X-CT), being called for short CT equipment, is the once great revolution of X line in medical application; It makes the application of X line get into digitlization, layer radiography epoch, has developed into a kind of main diagnostic imaging equipment.CT X spool is the final element that CT equipment produces the X line, is the signal source of CT equipment, and its basic role is that electric energy is converted into X line ability, and CT equipment is realized people's volume imaging through measuring the X line that sees through human body.
Make a general survey of in the prior art, the CT X spool that uses on all CT equipment of China at present is all from import, and domestic autonomous CT X spool manufacturing technology does not still have.The weak point of importing technology has following several respects: vacuum degree is bad, and useful life is short; The rotarting anode fault; Scattered rays is many; Image has pseudo-shadow; And human body there is radiation hazradial bundle; Supporting interchangeability is poor, poor compatibility.
The structure of import CT X spool is made up of anode, negative electrode and glass shell three parts.Anode is made up of target disc, rotating shaft, rotor, bearing.Target disc adopts big and thick molybdenum base of diameter or the single convex disk of graphite-based, and there is certain angle of inclination on the surface, and center fixation is in rotating shaft, and the other end of rotating shaft links to each other with rotor.During rotor rotation, target disc rotates thereupon.The effect of target surface is the beam bombardment that bears high-speed motion, produces the X line, is called exposure.During exposure, only less than 1% electron beam can convert into the X line can, about 99% electronics is from the target surface reflection and discharge, this part electronics is called secondary electron.It does harm rather than good, and can produce non-focus X line at random, makes imaging pseudo-shadow occur.And human body there is radiation hazradial bundle.One end of rotor links to each other with rotating shaft, and the other end links to each other with glass bulb.And outside the pass-out pipe, use with pipe box is fixing.Because size is fixed, be man-to-man relation so it can only use with the pipe box that matches.Can not match with other any producers, any pipe box model.Bearing is processed by heat-resisting alloy steel, can be high temperature resistant, be loaded on rotor internal cavity.Rotating speed is generally 8500r/min-10000r/min, plays the effect of high speed rotating.Because the problems such as moving equilibrium, bearing wear and heat conduction of rotor can cause faults such as rotarting anode locking.Negative electrode is made up of filament, cathode taps, cathode sheath.Its effect is emitting electrons and electron beam is focused on, makes the electron beam of bombardment on target surface have certain size, shape.Its effect of filament is an emitting electrons.Filament is installed in the cathode taps, adorns cathode sheath outward, and outside the pass-out pipe.Glass shell is used for fixing, and supports yin, yang the two poles of the earth and the vacuum degree that keeps in the pipe.Because of glass shell different with the expansion of metal coefficient at yin, yang the two poles of the earth, so when electron bombard anode target surface, the X line that produced can make that temperature raises in the pipe with heat energy, and causes binding site glass crack or cracked, causes glass bulb to leak gas.Cause vacuum degree bad.
Summary of the invention
The purpose of the utility model is to remedy the blank of domestic prior art, overcomes the many weak points that exist in the foreign technology, and a kind of environment-friendly type CT metal X spool is provided.
The purpose of the utility model realizes through following technical scheme.
A kind of environment-friendly type CT metal X spool; Be made up of anode, negative electrode and glass shell three parts, anode and negative electrode lay respectively at the both sides in the glass bulb, and anode comprises by target disc, rotor, bearing, anode kovar ring; The target disc center fixation is fixed by the molybdenum nut on the top of rotor.One end of anode kovar ring is connected with the interior bearing of rotor, and the other end is connected with glass bulb, the external anode set bolt in rotor rear end; Described negative electrode comprises that filament, cathode taps, cathode loop, cathode cap, cathode tube, negative electrode can cut down, and cathode taps is positioned at the eccentric position of glass bulb, and the cathode taps rear portion is fixed with cathode loop; The cathode taps front portion is fixed with cathode cap; The cathode tube that is attached thereto is positioned at the glass bulb centre, and its rear end envelope has the end cathode ring, and cathode taps and cathode tube are fixed on the pallet; The end that negative electrode can cut down is fixed in cathode tube, the other end and glass bulb welding.Be fixed with getter through impact style in the cathode tube.
Target disc is single convex disk, and target surface has the inclination angle.Target disc adopts diameter and the bigger compound target disc of molybdenum base tungsten-rhenium alloy of thickness, or the compound target disc of graphite-based tungsten-rhenium alloy.
The rotating speed of rotor is at 8,500 rev/mins to 10,000 rev/mins.Rotor is processed by oxygen-free copper.The inner chamber of rotor is through screw and bearing fixing, and the mode that bearing insert bottom and anode can cut down through vacuum brazing welds together; An inner thread mouth is left in the bottom of bearing insert, leads to outside the pipe, is fixing usefulness between CT metal X spool and the pipe box; This inner thread mouth can external disposable type the anode fixed screw.
Glass shell can be divided into A, B, three districts of C, is positioned at the A district of CTX spool mid portion, is made by copper alloy or oxygenless copper material, lays respectively at the B district and the C district of both sides, A district, is to adopt the glass that fusing point is high, dielectric strength is big, the coefficient of expansion is little to process; B district glass bulb one end and negative electrode can cut down welding, the tungsten-copper alloy welding in the other end and A district, the A district other end and the welding of C district glass bulb one end, the C district other end and the welding of anode kovar ring.
The utility model has carried out revolutionary improvement to the product structure in existing this area, has following beneficial effect:
But negative electrode adopt can cut down structure and add the getter gas clean-up,, make that CT X spool stability improves, prolong useful life.
2.A district's material adopts tungsten-copper alloy or oxygen-free copper, can effectively absorb secondary electron and shielding ray at random.At the radiation channel place of X ray, add the composite material of last layer circle or strip.Its effect is when seeing through effective rays, effectively stops the harm of scattered rays radiation to human body, reaches the purpose of environmental protection.
3. anode adopts one design bearing and special lubricated can improve dynamic balancing, makes rotating speed reach 8,500 rev/mins to 10,000 rev/mins.And rotor is difficult for locking.
4. the unique inner thread mouth fixed structure of anode and can cut down structure, make environment-friendly metal CT X spool can supporting any producer, any pipe box model, its compatibility is unique.
Description of drawings
Fig. 1 is the overall structure sketch map of the utility model;
Fig. 2 is the sketch map of shell subregion;
Fig. 3 is the anode construction sketch map.
Among the figure: 1 anode set bolt, 2 anode kovar rings, 3 glass bulbs, 4 rotors, 5 target discs, 6 molybdenum nuts; 7 cathode loops, 8 graphite, 9 cathode taps, 10 cathode caps, 11 cathode tubes, 12 end cathode rings; 13 pallets, 14 bearings, 15 common ports, 16 lead-in wires, 17 negative electrodes can cut down, 18 vacuum nozzles.
Embodiment
Referring to above-mentioned each accompanying drawing---Fig. 1, Fig. 2, Fig. 3, environment-friendly metal CT X spool is made up of anode, negative electrode and shell three parts.Anode comprises that target disc 5, rotor 4, bearing, anode can cut down parts such as 2; Its effect is to attract electronics and accelerated electron, and makes the electron bombard anode target surface of high-speed motion, receives sharply to stop to produce the X line; While conducts the heat that produces or radiate, and also absorbs secondary electron and ray at random.
The top of rotor 4 links to each other with target disc 5; Inner chamber is fixing through screw and bearing 14; The lining of bearing is fixing through jump ring and bearing 14; The bottom of bearing insert and anode kovar ring 2 weld together through the mode of vacuum brazing.An inner thread mouth is left in the bottom of bearing insert, leads to outside the pipe, is fixedly usefulness of CT X spool and pipe box.Inner thread mouth can external any anode fixed screw and any domestic and international producer, any pipe box model be complementary.Reach compatible purpose thus.
Anode kovar ring 2 is alloy circles of being processed by teleoseal, and an end is welded on bottom, the other end and the glass welding of rotor assembly through the mode of vacuum brazing.It is close with the glass swelling coefficient to cut down the material coefficient of expansion, so structure can be protected glass crack that glass bulb causes because of variations in temperature or cracked, to reach the purpose of gas clean-up.
Negative electrode by filament, cathode taps, cathode loop, cathode cap, cathode tube, negative electrode can cut down, getter etc. forms, its effect is emitting electrons and electron beam is focused on, makes the electron beam of bombardment on target surface have certain shape and size (actual focal spot).Filament is processed by tungsten, is shaped as solenoid shape.Pass through high-temperature shaping; Its effect is an emitting electrons.Because tungsten at high temperature has certain electron emissivity, fusing point is higher, and its ductility is convenient to wire drawing well and is shaped, and the anti-property of opening is not yielding under the highfield fortunately.After the filament energising, temperature rises gradually, after uniform temperature, begins emitting electrons.For given filament within the specific limits, filament voltage is high more, and filament temperature is also high more, and then the quantity of emitting electrons is just big more.In general, the filament burning time is long more, and working temperature is high more, and its evaporation is fast more, and burn-out life is short more.
Cathode taps 9, cathode cap 10, cathode tube 11, cathode loop 7 all are to be processed by nickel, and its effect is that the filament electrons emitted is focused on.Filament is fixed through molybdenum rod, in the straight skewed slot of the circular arc that is processed in the cathode taps of packing into then 9, can be reached the purpose of focusing.Again cathode loop 7 is fixed on cathode taps 9 lower ends through screw; Cathode cap 10 is fixed on the upper end of cathode taps 9 through screw.At last with the cathode taps that assembles 9, with cathode tube 11 pallet 13 internal fixation of packing into.
Negative electrode can cut down 17 and processed by teleoseal, and an end and negative electrode are fixed, the other end and glass welding.It is close with the glass swelling coefficient to cut down the material coefficient of expansion, so structure can be protected glass crack that glass bulb causes because of variations in temperature or cracked, to reach the purpose of gas clean-up, tube voltage.
Getter is fixed in the cathode tube through the mode of punching press.The secondary electron energy strikes more greatly on the glass bulb inwall, makes the rising of glass bulb temperature and emits vacuum degree in the gas reduction pipe.This moment, the effect of getter was to absorb the gas that CT X spool excites down in working order, and gas in the CT X spool is reduced to the minimum gas clean-up of coming, and made CT X spool performance more stable.
Shell: its effect is to be used for supporting yin, yang the two poles of the earth and the vacuum degree that keeps in the pipe.The A district adopts tungsten-copper alloy or oxygenless copper material, is positioned at CT X spool mid portion, and its effect can effectively shield scattered rays and absorb secondary electron, avoids scattered rays to the radiation hazradial bundle that human body causes, and reaches the purpose of environmental protection.The aligned focus place has the opening of a circle or strip, adopts composite material, so that effectively the X line passes through smoothly.B district and C district adopt the glass that fusing point is high, dielectric strength is big, the coefficient of expansion is little to process.B district glass bulb one end and negative electrode can cut down welding; The tungsten-copper alloy welding in the other end and A district; The A district other end and the welding of C district glass bulb one end, the C district other end and 2 welding of anode kovar ring, employing can be cut down the structure welding; Be close with the glass swelling coefficient, can avoid causing glass crack, joint portion or cracked because of variations in temperature because can cut down material.Reach the protection glass bulb, the purpose of gas clean-up.
The characteristics of the utility model environment-friendly metal CT X spool are that shell A district adopts tungsten copper alloy and composite material, and shielding scattered rays and the effect that absorbs secondary electron are arranged.At the radiation channel place of X ray, add the composite material of last layer circle or strip.Its effect is when seeing through effective rays, effectively stops the harm of scattered rays radiation to human body, reaches the purpose of environmental protection.Anode portion adopts anode head copper body bottom to leave an inner thread mouth, leads to the outer structure of pipe, is fixedly usefulness of CT X spool and pipe box.Inner thread mouth can external any anode fixed screw and any domestic and international producer, any pipe box model be complementary.Reach the purpose of supporting interchangeability thus.
Claims (6)
1. environment-friendly type CT metal X spool; Form by anode, negative electrode and glass shell three parts; Anode and negative electrode lay respectively at the both sides in the glass bulb; It is characterized in that: described anode comprises that by target disc, rotor, bearing, anode kovar ring, the target disc center fixation is fixed by the molybdenum nut on the top of rotor; One end of anode kovar ring is connected with the interior bearing of rotor, and the other end is connected with glass bulb, the external anode set bolt in rotor rear end; Described negative electrode comprises that filament, cathode taps, cathode loop, cathode cap, cathode tube, negative electrode can cut down, and cathode taps is positioned at the eccentric position of glass bulb, and it is bad that the cathode taps rear portion is fixed with negative electrode; The cathode taps front portion is fixed with cathode cap; The cathode tube that is attached thereto is positioned at the glass bulb centre, and its rear end envelope has the end cathode ring, and cathode taps and cathode tube are fixed on the pallet; The end that negative electrode can cut down is fixed in cathode tube, the other end and glass bulb welding; At the cathode tube internal fixation getter is arranged through impact style; Described target disc is single convex disk, and target surface has the inclination angle.
2. environment-friendly type CT metal X spool according to claim 1 is characterized in that: described target disc adopts diameter and the bigger compound target disc of molybdenum base tungsten-rhenium alloy of thickness, or the compound target disc of graphite-based tungsten-rhenium alloy.
3. environment-friendly type CT metal X spool according to claim 1 is characterized in that: described rotor, its rotating speed is at 8,500 rev/mins to 10,000 rev/mins.
4. environment-friendly type CT metal X spool according to claim 1, it is characterized in that: described rotor is processed by oxygen-free copper.
5. environment-friendly type CT metal X spool according to claim 1 is characterized in that: described rotor, and its inner chamber is through screw and bearing fixing, and the mode that the lining bottom of bearing and anode can cut down through vacuum brazing welds together; An inner thread mouth is left in the bottom of bearing insert, leads to outside the pipe, is fixing usefulness between CT metal X spool and the pipe box: the anode fixed screw that this inner thread mouth can external disposable type.
6. environment-friendly type CT metal X spool according to claim 1 is characterized in that: described shell, can be divided into A, B, three districts of c, and be positioned at the A district of CTX spool mid portion, be made by copper credit union or oxygenless copper material; Laying respectively at the B district and the C district of both sides, A district, is to adopt the glass that fusing point is high, dielectric strength is big, the coefficient of expansion is little to process; B district glass bulb one end and negative electrode can cut down welding, the tungsten-copper alloy welding in the other end and A district, the A district other end and the welding of C district glass bulb one end, the C district other end and the welding of anode kovar ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205389516U CN202434460U (en) | 2011-12-21 | 2011-12-21 | Environmental-friendly CT (Computed Tomography) metal X-ray tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205389516U CN202434460U (en) | 2011-12-21 | 2011-12-21 | Environmental-friendly CT (Computed Tomography) metal X-ray tube |
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| CN202434460U true CN202434460U (en) | 2012-09-12 |
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| CN2011205389516U Expired - Fee Related CN202434460U (en) | 2011-12-21 | 2011-12-21 | Environmental-friendly CT (Computed Tomography) metal X-ray tube |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405731A (en) * | 2015-12-04 | 2016-03-16 | 中国电子科技集团公司第十二研究所 | CT bulb tube employing metal-ceramic sealing mode |
| CN107768219A (en) * | 2017-11-29 | 2018-03-06 | 上海钧安医疗科技有限公司 | A kind of novel high-capacity x ray tube radiator structures |
| CN109243948A (en) * | 2018-09-30 | 2019-01-18 | 汕头高新区聚德医疗科技有限公司 | A kind of high stability CT bulb |
| CN109273335A (en) * | 2018-09-30 | 2019-01-25 | 汕头高新区聚德医疗科技有限公司 | A kind of metal and glass sealing process of CT bulb |
-
2011
- 2011-12-21 CN CN2011205389516U patent/CN202434460U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405731A (en) * | 2015-12-04 | 2016-03-16 | 中国电子科技集团公司第十二研究所 | CT bulb tube employing metal-ceramic sealing mode |
| CN105405731B (en) * | 2015-12-04 | 2017-11-03 | 中国电子科技集团公司第十二研究所 | A kind of CT bulbs of use metal to ceramic sealing |
| CN107768219A (en) * | 2017-11-29 | 2018-03-06 | 上海钧安医疗科技有限公司 | A kind of novel high-capacity x ray tube radiator structures |
| CN107768219B (en) * | 2017-11-29 | 2023-10-13 | 上海钧安医疗科技有限公司 | Novel high-capacity x-ray bulb tube heat radiation structure |
| CN109243948A (en) * | 2018-09-30 | 2019-01-18 | 汕头高新区聚德医疗科技有限公司 | A kind of high stability CT bulb |
| CN109273335A (en) * | 2018-09-30 | 2019-01-25 | 汕头高新区聚德医疗科技有限公司 | A kind of metal and glass sealing process of CT bulb |
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| C14 | Grant of patent or utility model | ||
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Owner name: NAGO MEDICAL EQUIPMENT (BEIJING) CO., LTD. Free format text: FORMER OWNER: WANG JIANJUN Effective date: 20140410 |
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Effective date of registration: 20140410 Address after: 100300 Beijing city Shunyi District Lin River Economic Development Zone along the Yan Road No. 53 Patentee after: Solid state medical equipment (Beijing) Co., Ltd. Address before: 100101 Beijing city Dongcheng District dry alley No. 18 Patentee before: Wang Jianjun |
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Effective date of registration: 20170605 Address after: 101300 Beijing city Shunyi District Lin River Economic Development Zone along the Yan Road No. 53 Patentee after: Beijing Nago Technology Co. Ltd. Address before: 100300 Beijing city Shunyi District Lin River Economic Development Zone along the Yan Road No. 53 Patentee before: Solid state medical equipment (Beijing) Co., Ltd. |
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Granted publication date: 20120912 Termination date: 20171221 |
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