CN105489461A - Multi-cathode, large-anode and rotatable X-ray bulb tube with long service lifetime - Google Patents
Multi-cathode, large-anode and rotatable X-ray bulb tube with long service lifetime Download PDFInfo
- Publication number
- CN105489461A CN105489461A CN201510877884.3A CN201510877884A CN105489461A CN 105489461 A CN105489461 A CN 105489461A CN 201510877884 A CN201510877884 A CN 201510877884A CN 105489461 A CN105489461 A CN 105489461A
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- Prior art keywords
- anode
- ray
- rotatable
- cathode
- tube
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- 239000000956 alloy Substances 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 5
- 238000004846 x-ray emission Methods 0.000 abstract 7
- 238000001816 cooling Methods 0.000 abstract 3
- 238000009413 insulation Methods 0.000 abstract 2
- 230000005855 radiation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000013077 target material Substances 0.000 description 3
- 210000000936 intestine Anatomy 0.000 description 2
- 210000002784 stomach Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
- H01J35/26—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by rotation of the anode or anticathode
Landscapes
- X-Ray Techniques (AREA)
Abstract
The invention relates to a multi-cathode, large-anode and rotatable X-ray bulb tube with long service lifetime. The multi-cathode, large-anode and rotatable X-ray bulb tube with long service lifetime comprises an X-ray emission tube, an insulation cylinder and a lead shielding cylinder in which an X-ray outlet is formed sleeves the X-ray emission tube, the X-ray emission tube can automatically rotate along the longitudinal axis of the X-ray emission tube in the insulation cylinder, a cathode of the X-ray emission tube comprises multiple groups of independent cathode units annularly arranged at equal intervals, an anode of the X-ray emission tube comprises a disc-shaped anode body and an anode body cooling block, and the anode body cooling block is externally connected with a heat sink. When an anode bombard point corresponding to a cathode unit is aging, an operator drives the whole X-ray emission tube to rotate through a rotation mechanism so that a new cathode unit of an annular array rotates to a ray outlet, which is the same as replacing for a new ray tube, and the service lifetime of the ray tube can reach 20 to 30 years. Meanwhile, the multi-cathode, large-anode and rotatable X-ray bulb tube with long service lifetime has the advantages of high cooling and is suitably used for various machine types, the volume of the whole ray tube is smaller, and the weight of the whole ray tube is reduced.
Description
Technical field
The invention belongs to medical treatment and defect-detecting equipment technical field, be specifically related to many negative electrodes, large anode, rotatable, long-life X ray bulb.
Background technology
X-ray tube includes two electrodes: one is the filament for electron emission, and as negative electrode, another is the target for accepting electronics bombardment, as anode.
X-ray tube in the market generally has two kinds of structures, and one is fixed anode formula X-ray tube, and another kind is rotary anode X-ray tube.Fixed anode formula X-ray tube volume is little, power is at below 5KW, some bombardment of the electron stream launched of its cathode filament antianode target all the time, after ray tube has been grown service time, the electron stream focus of anode target surface is not only scared soon, or occur the phenomenon that anode target material Metal Melting is cheated, the efficiency of ray tube reduces greatly, even scraps; The power of rotary anode X-ray tube is at 10KW-between 100KW, the focus that its anode accepts the bombardment of electron stream is not a point, but a circle, it solves the problem in the easy aging molten hole of anode target material metal to a certain extent, but the heat-transfer path of its anode target material metal is oversize, heat not easily spreads out of, and thermal capacity is undesirable.
Summary of the invention
The object of this invention is to provide a kind of many negative electrodes, large anode, rotatable, long-life X ray bulb, easily aging to overcome X-ray tube in prior art, heat dispersion is poor, ineffective problem.
Technical scheme of the present invention is:
Many negative electrodes, large anode, rotatable, long-life X ray bulb, comprise X ray transmitting tube, the outer sheathed insulating cylinder of X ray transmitting tube, the outer sheathed lead screen cylinder of insulating cylinder, described insulating cylinder and lead screen cylinder have X ray outlet, insulating cylinder inwall epimere and hypomere arrange flexible fastening block and runing rest respectively, and X ray transmitting tube is longitudinally arranged between flexible fastening block and runing rest; X ray transmitting tube lower end connects can make X ray transmitting tube along the rotating mechanism of its longitudinal axis rotation;
Described X ray transmitting tube comprises vacuum body and in vacuum body, arranges anode and negative electrode; Described negative electrode is arranged at one end of vacuum body inside, many groups that comprise that ring-type at equal intervals arranges independently cathode electrode units; Outside many groups cathode electrode unit, focusing arrangement is set;
Described anode is arranged at the other end of vacuum body inside, the anode bodies radiating block comprising anode bodies and be connected with anode bodies lower surface, and anode bodies radiating block is connected by the fin of trip bolt with vacuum body outside, the rotating mechanism described in fin connects.
Cathode electrode unit comprises cathode filament and heater lead, and the cathode filament of many group cathode electrode units is by filament disk annular release array, and the heater lead of many group cathode filaments is drawn vacuum body and is separated by the outlet board outside vacuum body fixing;
Anode bodies is the plate-like metal body that there is inclination upper surface, and anode bodies inclines face with to organize cathode electrode unit just right more; Described anode bodies to be embedded in anode bodies radiating block and to be fixed by trip bolt and anode bodies radiating block.
Described vacuum body comprises glass bulb and is connected at the bottom of alloy, connects at the bottom of alloy and is arranged at glass bulb lower end, connects upper and lower end face at the bottom of alloy and is sticked with anode bodies radiating block and fin respectively; Connect at the bottom of alloy, anode bodies radiating block, fin connected by trip bolt.
The lower surface of described fin is curved tooth cylindrical gear structure; Described rotating mechanism comprises swingle, and one end of swingle is through insulating cylinder and lead screen cylinder and arrange knob, and the other end of swingle arranges the curved tooth cylindrical gear with the lower surface curved tooth cylindrical gear respective outer side edges of fin.
Described flexible fastening block arranges 3 pieces, and 3 pieces of flexible fastening blocks at equal intervals ring-type are arranged at insulating cylinder epimere inwall; Described runing rest is arranged on insulating cylinder hypomere inwall, and fin is arranged in runing rest, and on fin and runing rest contact-making surface, correspondence arranges ball grooves, arranges ball in ball grooves.
Described anode bodies radiating block is that oxygen-free copper is fast.
Described focusing arrangement is single focus, and the number of cathode electrode unit is 8-16.
Described focusing arrangement is bifocus, and the number of cathode electrode unit is 4-8.
Identical with the thermal coefficient of expansion of glass bulb at the bottom of described connection alloy.
Beneficial effect of the present invention:
1. relative to prior art, X ray transmitting tube of the present invention can rotate, when the anode bombarded point that cathode electrode unit is corresponding occurs aging, operating personnel drive overall X ray transmitting tube to rotate by rotating mechanism, the new cathode electrode unit of annular array and anode bodies is allowed to rotate to radiation exit place, be equivalent to have changed a new ray tube, ray tube can reach 20-30 useful life;
2., relative to prior art, the setting of anode bodies radiating block of the present invention and fin, strengthens thermal convection, accelerates heat exchange, improves the radiating rate of ray tube entirety;
3., relative to prior art, the smaller volume of the whole ray tube of the present invention, weight saving, can be used in the multiple occasions such as C-arm, G arm, O-arm, bedside machine, stomach and intestine machine, DR machine.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the cathode filament distribution schematic diagram in the embodiment of the present invention 1;
Fig. 3 is the cathode filament distribution schematic diagram in the embodiment of the present invention 2;
In figure, 1-insulating cylinder, 2-lead screen cylinder, 3-X radiation exit, 4-flexible fastening block, 5-runing rest, 6-focusing arrangement, 7-anode bodies, 8-anode bodies radiating block, 9-fin, 10-cathode filament, 11-heater lead, 12-filament disk, 13-outlet board, 14-glass bulb, 15-connects at the bottom of alloy, 16-swingle, 17-ball.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is further detailed.
Embodiment 1:
Many negative electrodes as depicted in figs. 1 and 2, large anode, rotatable, long-life X ray bulb, comprise X ray transmitting tube, the outer sheathed insulating cylinder 1 of X ray transmitting tube, the outer sheathed lead screen cylinder 2 of insulating cylinder 1, insulating cylinder 1 and lead screen cylinder 2 have X ray outlet 3, insulating cylinder 1 inwall epimere and hypomere arrange flexible fastening block 4 and runing rest 5 respectively, and X ray transmitting tube is longitudinally arranged between flexible fastening block 4 and runing rest 5; X ray transmitting tube lower end connects can make X ray transmitting tube along the rotating mechanism of its longitudinal axis rotation;
X ray transmitting tube comprises vacuum body and in vacuum body, arranges anode and negative electrode; Negative electrode is arranged at one end of vacuum body inside, many groups that comprise that ring-type at equal intervals arranges independently cathode electrode units; Focusing arrangement 6 is set outside many groups cathode electrode unit; Cathode electrode unit comprises cathode filament 10 and heater lead 11, and the cathode filament logical 10 of many group cathode electrode units crosses filament disk 12 annular release array, and the heater lead 11 of many group cathode filaments 10 is drawn vacuum body and is separated by the outlet board 13 outside vacuum body fixing;
Anode is arranged at the other end of vacuum body inside, and the anode bodies radiating block 8 comprising anode bodies 7 and be connected with anode bodies 7 lower surface, anode bodies radiating block 8 is connected with the fin 9 of vacuum body outside by trip bolt, and fin 9 connects described rotating mechanism.Anode bodies radiating block 8 is that solid oxygen-free copper is fast, and oxygen-free copper has good heat-conductive characteristic soon, and anode bodies 7 has the plate-like metal body of 15 degree of inclinationes for upper surface, and anode bodies 7 inclines face with that to organize cathode electrode unit just right is more; Anode bodies 7 to be embedded in anode bodies radiating block 8 and to be fixed by trip bolt and anode bodies radiating block 8.
Vacuum body comprises glass bulb 14 and to be connected at the bottom of alloy 15, to connect at the bottom of alloy 15 and is arranged at glass bulb 14 lower end, and to connect at the bottom of alloy 15 identical with the thermal coefficient of expansion of glass bulb 14, at the bottom of connection alloy, 15 upper and lower end faces are sticked with anode bodies radiating block 8 and fin 9 respectively; To connect at the bottom of alloy 15, anode bodies radiating block 8, fin 9 connected by trip bolt.
The lower surface of fin 9 is that curved tooth cylindrical gear structure rotating mechanism comprises swingle 16, one end of swingle 16 is through insulating cylinder 1 and lead screen cylinder 2 and arrange knob, and the other end of swingle 16 arranges the curved tooth cylindrical gear with the lower surface curved tooth cylindrical gear respective outer side edges of fin.Flexible fastening block 4 arranges 3 pieces, and 3 pieces of flexible fastening blocks 4 at equal intervals ring-type are arranged at insulating cylinder 1 epimere inwall; Described runing rest 5 is arranged on insulating cylinder 1 hypomere inwall, and fin 9 is arranged in runing rest 5, and on fin 9 and runing rest 5 contact-making surface, correspondence arranges ball grooves, arranges ball 17 in ball grooves.
In the present embodiment, focusing arrangement 6 is single focus, and the number of cathode electrode unit is 8, and its design parameter is as follows:
Maximum voltage: 150KV;
Maximum current: 200MA;
Limit power: 20kW(100KV, 100MA, 0.1S);
Focus: φ 1.5mm;
Anode thermal capacity: 1000W.
When the anode bombardment focus that cathode electrode unit is corresponding occurs aging, operating personnel are by the knob driven rotary mechanism outside lead screen cylinder 2, the curved tooth cylindrical gear of rotating mechanism drives X ray transmitting tube entirety to rotate along its central shaft, during rotation, 3 pieces of flexible fastening blocks 4 of insulating cylinder 1 upper end play centering and stabilization, the ball arranged between the runing rest 5 of insulating cylinder 1 lower end and the fin 9 of transmitting tube allow rotate more nimble, when new cathode electrode unit and the int anode bodies part of correspondence rotate to radiation exit place, be equivalent to have changed a new ray tube,
Embodiment 2:
As shown in Figure 3, as different from Example 1, the present embodiment focusing arrangement 6 is bifocus, and the number of cathode electrode unit is 8, and its design parameter is as follows:
Maximum voltage: 130KV;
Maximum current: 100MA;
Limit power: 10kW(100KV, 100MA, 0.1S);
Focus: φ 0.3 ~ 0.6mm;
Anode thermal capacity: 1000W.
The present invention substantially increases the useful life of X-ray tube, and its useful life can reach 20-30; Meanwhile, anode dimension of the present invention increases strengthens heat radiation, and the smaller volume of whole ray tube, weight saving, can be widely used in various type, as C-arm, G arm, O-arm, bedside machine, stomach and intestine machine, DR machine etc.
Content of the present invention is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading specification of the present invention to any equivalence that technical solution of the present invention is taked, is claim of the present invention and contains.
Claims (9)
1. negative electrode more than, large anode, rotatable, long-life X ray bulb, comprise X ray transmitting tube, the outer sheathed insulating cylinder (1) of X ray transmitting tube, insulating cylinder (1) is sheathed lead screen cylinder (2) outward, described insulating cylinder (1) and lead screen cylinder (2) have X ray outlet (3), it is characterized in that:
Insulating cylinder (1) inwall epimere and hypomere arrange flexible fastening block (4) and runing rest (5) respectively, and X ray transmitting tube is longitudinally arranged between flexible fastening block (4) and runing rest (5); X ray transmitting tube lower end connects can make X ray transmitting tube along the rotating mechanism of its longitudinal axis rotation;
Described X ray transmitting tube comprises vacuum body and in vacuum body, arranges anode and negative electrode; Described negative electrode is arranged at one end of vacuum body inside, many groups that comprise that ring-type at equal intervals arranges independently cathode electrode units; Focusing arrangement (6) is set outside many groups cathode electrode unit;
Described anode is arranged at the other end of vacuum body inside, the anode bodies radiating block (8) comprising anode bodies (7) and be connected with anode bodies (7) lower surface, anode bodies radiating block (8) is connected with the fin (9) of vacuum body outside by trip bolt, the rotating mechanism described in fin (9) connects.
2. many negative electrodes according to claim 1, large anode, rotatable, long-life X ray bulb, is characterized in that:
Cathode electrode unit comprises cathode filament (10) and heater lead (11), the cathode filament logical (10) of many groups cathode electrode unit crosses filament disk (12) annular release array, and heater lead (11) the extraction vacuum body organizing cathode filament (10) is separated fixing more by the outlet board (13) outside vacuum body;
Anode bodies (7) has the plate-like metal body of inclination for upper surface, and anode bodies (7) inclines face with to organize cathode electrode unit just right more; Described anode bodies (7) to be embedded in anode bodies radiating block (8) and to be fixed by trip bolt and anode bodies radiating block (8).
3. many negative electrodes according to claim 1 and 2, large anode, rotatable, long-life X ray bulb, is characterized in that:
Described vacuum body comprises glass bulb (14) and is connected (15) at the bottom of alloy, connects (15) at the bottom of alloy and is arranged at glass bulb (14) lower end, connects (15) upper and lower end face at the bottom of alloy and is sticked with anode bodies radiating block (8) and fin (9) respectively; Connect (15), anode bodies radiating block (8), fin (9) at the bottom of alloy to be connected by trip bolt.
4. many negative electrodes according to claim 3, large anode, rotatable, long-life X ray bulb, is characterized in that:
The lower surface of described fin (9) is curved tooth cylindrical gear structure; Described rotating mechanism comprises swingle (16), one end of swingle (16) is through insulating cylinder (1) and lead screen cylinder (2) and arrange knob, and the other end of swingle (16) is arranged and the curved tooth cylindrical gear of lower surface curved tooth cylindrical gear respective outer side edges of fin (9).
5. many negative electrodes according to claim 4, large anode, rotatable, long-life X ray bulb, is characterized in that:
Described flexible fastening block (4) arranges 3 pieces, and 3 pieces of flexible fastening blocks (4) at equal intervals ring-type are arranged at insulating cylinder (1) epimere inwall; Described runing rest (5) is arranged on insulating cylinder (1) hypomere inwall, and fin (9) is arranged in runing rest (5), and on fin (9) and runing rest (5) contact-making surface, correspondence arranges ball grooves, arranges ball (17) in ball grooves.
6. many negative electrodes according to claim 5, large anode, rotatable, long-life X ray bulb, is characterized in that:
Described anode bodies radiating block (8) for oxygen-free copper fast.
7. many negative electrodes according to claim 6, large anode, rotatable, long-life X ray bulb, is characterized in that:
Described focusing arrangement (6) is single focus, and the number of cathode electrode unit is 8-16.
8. many negative electrodes according to claim 7, large anode, rotatable, long-life X ray bulb, is characterized in that:
Described focusing arrangement (6) is bifocus, and the number of cathode electrode unit is 4-8.
9. many negative electrodes according to claim 8, large anode, rotatable, long-life X ray bulb, is characterized in that: at the bottom of described connection alloy, (15) are identical with the thermal coefficient of expansion of glass bulb (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877884.3A CN105489461B (en) | 2015-12-04 | 2015-12-04 | Many rotatable X-ray bulbs of negative electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877884.3A CN105489461B (en) | 2015-12-04 | 2015-12-04 | Many rotatable X-ray bulbs of negative electrode |
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| Publication Number | Publication Date |
|---|---|
| CN105489461A true CN105489461A (en) | 2016-04-13 |
| CN105489461B CN105489461B (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877884.3A Active CN105489461B (en) | 2015-12-04 | 2015-12-04 | Many rotatable X-ray bulbs of negative electrode |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146058A (en) * | 2020-01-16 | 2020-05-12 | 麦默真空技术无锡有限公司 | Magnetic fluid sealed multi-arm cathode X-ray tube |
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|---|---|---|---|---|
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| CN2749049Y (en) * | 2004-10-26 | 2005-12-28 | 王建军 | Strong type rotary anode X-ray tube |
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| US8897420B1 (en) * | 2012-02-07 | 2014-11-25 | General Electric Company | Anti-fretting coating for rotor attachment joint and method of making same |
| CN205194652U (en) * | 2015-12-04 | 2016-04-27 | 魏理贵 | Many negative poles, big positive pole, rotatable, long -life X ray bulb |
-
2015
- 2015-12-04 CN CN201510877884.3A patent/CN105489461B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE868638C (en) * | 1941-05-29 | 1953-02-26 | Siemens Reiniger Werke Ag | Rotary anode tube for material analysis |
| US4281269A (en) * | 1977-04-27 | 1981-07-28 | Ledley Robert S | Microfocus X-ray tube |
| CN85102523A (en) * | 1985-04-10 | 1986-02-10 | 北京市理化分析测试中心 | X-ray generator |
| CN2030759U (en) * | 1988-03-21 | 1989-01-11 | 刘春华 | Rotary anode x-ray tubes with a radiator |
| CN2749049Y (en) * | 2004-10-26 | 2005-12-28 | 王建军 | Strong type rotary anode X-ray tube |
| CN101553896A (en) * | 2006-12-04 | 2009-10-07 | 株式会社东芝 | Rotary anode type x ray tube |
| CN201666885U (en) * | 2010-01-08 | 2010-12-08 | 纳优科技（北京）有限公司 | Multi-target target disc device for polarized secondary target X-ray fluorescence spectrometer |
| US8897420B1 (en) * | 2012-02-07 | 2014-11-25 | General Electric Company | Anti-fretting coating for rotor attachment joint and method of making same |
| WO2013185826A1 (en) * | 2012-06-14 | 2013-12-19 | Siemens Aktiengesellschaft | X-ray source, use thereof and method for producing x-rays |
| CN103594308A (en) * | 2013-11-25 | 2014-02-19 | 丹东华日理学电气股份有限公司 | Double-lamp filament X-ray tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111146058A (en) * | 2020-01-16 | 2020-05-12 | 麦默真空技术无锡有限公司 | Magnetic fluid sealed multi-arm cathode X-ray tube |
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| Publication number | Publication date |
|---|---|
| CN105489461B (en) | 2017-09-29 |
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