CN108766861A - A kind of anode assemblies for X ray CT pipe - Google Patents
A kind of anode assemblies for X ray CT pipe Download PDFInfo
- Publication number
- CN108766861A CN108766861A CN201810853061.0A CN201810853061A CN108766861A CN 108766861 A CN108766861 A CN 108766861A CN 201810853061 A CN201810853061 A CN 201810853061A CN 108766861 A CN108766861 A CN 108766861A
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- CN
- China
- Prior art keywords
- ray
- shell
- pipe
- anode
- anode assemblies
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000712 assembly Effects 0.000 title claims abstract description 28
- 238000000429 assembly Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 22
- 239000002826 coolant Substances 0.000 claims description 21
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- VQYHBXLHGKQYOY-UHFFFAOYSA-N aluminum oxygen(2-) titanium(4+) Chemical compound [O-2].[Al+3].[Ti+4] VQYHBXLHGKQYOY-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 3
- 239000013556 antirust agent Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 239000003755 preservative agent Substances 0.000 claims description 3
- 230000002335 preservative effect Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 19
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000002591 computed tomography Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000003351 Melanosis Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
- H01J35/105—Cooling of rotating anodes, e.g. heat emitting layers or structures
- H01J35/106—Active cooling, e.g. fluid flow, heat pipes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/16—Vessels; Containers; Shields associated therewith
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- X-Ray Techniques (AREA)
Abstract
The present invention provides a kind of anode assemblies for X ray CT pipe, belong to the field of medical instrument technology.The anode assemblies for X ray CT pipe include anode disc and the shell that is sleeved on anode disc, and multiple annular grooves are provided on anode disc, and shell has annulus identical with annular groove quantity.Mutually agreed with annular groove by annulus, is effectively increased swept area, improves heat-radiation heat-dissipating efficiency.Further, water base cooling circuit is individually used in the bottom of shell, is coexisted with existing oil cooling loop, to realize higher radiating efficiency.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly to a kind of anode assemblies for X ray CT pipe.
Background technology
CT（Computed Tomography）That is X ray computer tomography is doctor indispensable in modern medical service
Learn diagnostic means.The core devices of CT system are X ray CT pipes.X ray CT pipe is inspired by carrying out heating to cathode filament
Thermoelectron, and under accelerating field effect between a cathode and an anode, high-speed impact to target surface, to generate X-ray.This part
Energy only occupies the 1% of gross energy, and the energy of residue about 99% is completely converted into thermal energy.Therefore, by electronic impact on target disc
It heats up quickly at position.Usual anode disc carries out high speed rotation in vacuum envelope, and heat can be distributed to entire target in this way
Disk is to avoid hot-spot.Under high vacuum hot conditions, the heat on target disc is mainly by radiant heat transfer to vacuum tube
Shell, the circulating cooling liquid by flowing through vacuum envelope are taken away.When CT pipes work, target disc bulk temperature is more than 1200 DEG C, target disc focus
Track temperature is more than 2000 DEG C, and temperature is more than 2600 DEG C at target disc focal spot；Its anode bearing mainly uses silver or lead dry lubrication axis
It holds, the limit of working temperature of bearing ball corresponds to 450 DEG C and 350 DEG C respectively, therefore the thermal management of CT pipes is most important.If
Heat dissipation not in time, can cause target disc hot-spot at focal spot that metal target surface is caused to evaporate, and then tube core is caused to be struck sparks；Or it makes
At the ball overheat in ball bearing, keep the damage of its coating stuck so as to cause bearing, two kinds of phenomenons all directly result in the event of CT pipes
Barrier.
Fig. 1 shows that in the prior art the target disc of common CT pipes designs and the schematic diagram of the type of cooling.Target disc is by metallic target
Face and graphite are welded to form, and electron beam hits the heat that metal target surface generates and is transmitted on graphite, and is radiated on vacuum envelope.
The coolant liquid of CT pipe cooling systems flows the heat absorbed on vacuum envelope in tube core periphery, then passes through the oil pump of cooling component
Pressures cycle comes out, and finally carries out heat exchange cooling with surrounding air.But due to the radiating surface of graphite target disc and vacuum envelope
Product is limited, and radiation efficiency is low.Therefore, the tube core overall heat dissipation efficiency of common CT pipes is relatively low, on the one hand adds in the large power long time
When load, target disc or ball overheat are easily caused, causes the phenomenon that tube core is struck sparks or bearing is stuck, to influence the service life of CT pipes；Separately
On the one hand cause to need a large amount of stand-by period between CT complete machine twice sweeps, affect the working efficiency of machine system.
Invention content
The purpose of the present invention is to provide a kind of anode assemblies for X ray CT pipe, to solve existing anode assemblies
Heat radiation energy force difference, the problem of influencing CT pipe service lifes.
In order to solve the above technical problems, the present invention provides a kind of anode assemblies for X ray CT pipe, including anode disc
With the shell being sleeved on the anode disc, multiple annular grooves are provided on the anode disc, the shell has and annular groove
The identical annulus of quantity.
Optionally, the annular groove agrees with one by one with the annulus.
Optionally, the anode disc and the shell keep identical current potential.
Optionally, semi-circular shape access there are two being set in the bottom of the shell, is used in combination cover plate for sealing to connect.
Optionally, the bottom of the shell is opened there are two being open, for flowing in and out coolant liquid.
Optionally, the shell and anode disc are grounded simultaneously.
Optionally, the coolant liquid is water base coolant liquid, and composition includes ethylene glycol, deionized water, preservative and antirust
Agent.
Optionally, the material of annulus is molybdenum, surface plasma spray aluminum oxide titanium in the shell.
Optionally, the titanium aluminum oxide is AT13 or AT40.
Optionally, the material of annulus is stainless steel in the shell, and annealing in hydrogen atmosphere Darkening process is done on surface.
It provides a kind of anode assemblies for X ray CT pipe in the present invention, including anode disc and is sleeved on anode target
Shell on disk, multiple annular grooves are provided on anode disc, and shell has annulus identical with annular groove quantity.By annulus and
Annular groove mutually agrees with, and is effectively increased swept area, improves heat-radiation heat-dissipating efficiency.Make CT pipes that can carry longer continuous scanning
Time, corresponding entire CT machines can stream time it is longer；In addition delay components aging, extend the service life of CT pipes,
Repair and renewal cost are saved, there is high commercial value.
Description of the drawings
Fig. 1 is that the target disc design of common CT pipes in the prior art and coolant liquid flow to schematic diagram；
Fig. 2 is that the anode assemblies and coolant liquid for X ray CT pipe that embodiment one provides flow to schematic diagram；
Fig. 3 is the structural schematic diagram of anode disc；
Fig. 4 is the structural schematic diagram of shell；
Fig. 5 be shell bottom in annular access schematic diagram；
Fig. 6 is the schematic cross-section of shell；
Fig. 7 is that coolant liquid flows to schematic diagram in embodiment two.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments to a kind of anode assemblies for X ray CT pipe proposed by the present invention make into
One step is described in detail.According to following explanation and claims, advantages and features of the invention will become apparent from.It should be noted that
Attached drawing is all made of very simplified form and uses non-accurate ratio, only to convenient, lucidly aid illustration is of the invention
The purpose of embodiment.
Embodiment one
The present embodiment one provides a kind of anode assemblies for X ray CT pipe, as shown in Figure 2.It is described for X ray CT pipe
Anode assemblies include anode disc 1 and the shell 2 that is sleeved on the anode disc 1.It is the anode disc 1 as shown in Figure 3
Structural schematic diagram, specifically, being provided with multiple annular grooves 11 on the anode disc 1；The shell 2 has and 11 quantity of annular groove
Identical annulus 21, as shown in Figure 4.Further, the annular groove 11 agrees with one by one with the annulus 21, therefore annulus 21
In the presence of the rotation for having no effect on anode disc 1.The preferred quantity of annular groove 11 and annulus 21 is 4 in the present embodiment one,
The quantity of annular groove 11 and annulus 21 can be selected according to actual conditions.
The anode disc 1 and the shell 2 are grounded simultaneously, even if in the spacing of the annular groove 11 and the annulus 21
In the case of from very little, spark phenomenon will not be generated.Specifically, the material of the annulus 21 is molybdenum, surface plasma spray
Titanium aluminum oxide is applied, the titanium aluminum oxide can be AT13 or AT40, and heat emissivity coefficient is made to be increased to 0.8 ~ 0.9 from existing 0.2,
To receive more heats from anode disc 1；Alternatively, the material of the annulus 21 is stainless steel, annealing in hydrogen atmosphere melanism is done on surface
Processing, can be increased to 0.75 ~ 0.85 by heat emissivity coefficient.By the combination of annular groove 11 and annulus 21 in the present embodiment one,
Increase heat dissipation area of the anode disc 1 relative to shell 2, to improve 1 heat radiation of anode disc to shell 2 heat,
Finally improve radiating efficiency.
As shown in Fig. 2, being existing oil cooling loop schematic diagram.This oil cooling loop is since anode bottom 3, successively
The shell at the shell and target disc at rotor is flowed through, cathode is reached（As shown by the arrows in Figure 2）, followed subsequently into cooling fin completion
Ring.This cooling circuit uses insulating oil coolant liquid due to flowing through rotor driving coil 4.Further, the present embodiment one
In in addition the bottom of the shell 2 individually use cooling circuit.The cooling circuit is buckled by the bottom and cover board 5 of the shell 2
It closes and is formed.Semi-circular shape access there are two being set in the bottom of the shell 2, as shown in figure 5, for the coolant liquid that circulates.It please refers to
The bottom of Fig. 4, the shell 2 are opened there are two being open, and respectively are used to flow into the entrance 22 of coolant liquid and going out for outflow coolant liquid
Mouth 23.As shown in figure 5, coolant liquid enters from entrance 22, advance according to semicircle endless path from outside to inside, after reaching interior annular,
According still further to advancing from inside to outside in the other half circular path, finally another cooling fin is flowed out to from outlet 23.The coolant liquid
For water base coolant liquid, composition includes ethylene glycol, deionized water, preservative and antirust agent.The cooling effect ratio of water base coolant liquid
Insulating oil is more preferable, to realize higher radiating efficiency.In the present embodiment one, the anode disc 1 and the shell 2 are simultaneously
Ground connection, it is ensured that take the safety in water cooling circuit in the bottom of the shell 2.As shown in fig. 6, the bottom of the shell 2 and
The cover board 5 is in outer ring（Such as the position A in Fig. 6）And inner ring（Such as the position B in Fig. 6）Junction can take argon arc welding or
The modes such as soldering are connected and sealed, it is ensured that the seal of water-cooling loop makes it keep apart with external wound oil cooling circuit.
Embodiment two
The present embodiment two provides a kind of anode assemblies for X ray CT pipe.Difference lies in the anodes with embodiment one
Target disc 1 and the shell 2 keep identical current potential, total wound oil cooling circuit to be divided into two.
In the present embodiment two, under the pressure of oil pump, insulating oil coolant liquid reaches anode bottom 3, and here one point be
Two, wherein one followed by the shell at rotor, the shell at rotor at driving coil 4 and target disc reaches cathode（Such as Fig. 7
In solid arrow shown in）, in addition one lead to the shell 2 bottom（As shown in the dotted arrow in Fig. 7）.Such as Fig. 4 institutes
Show, the outlet of the entrance 22 for respectively being used to flow into coolant liquid there are two being open and outflow coolant liquid is opened in the bottom of the shell 2
23.As shown in figure 5, insulating oil coolant liquid enters from entrance 22, advance according to semicircle endless path from outside to inside, reaches interior annular
Afterwards, according still further to advancing from inside to outside in the other half circular path, finally from 23 outflow of outlet, converge later with first access,
Radiator is entered, oil cooling loop is completed.In the present embodiment two, the bottom of the shell 2 and the cover board 5 are in outer ring
（Such as the position A in Fig. 6）And inner ring（Such as the position B in Fig. 6）Junction argon arc welding, Laser Welding can be taken to get ready or spiral shell
The modes such as nail are attached.
CT pipes use the anode assemblies of the present invention, can carry the longer continuous scanning time, corresponding entire CT machines
Can stream time it is longer；In addition delay components aging, extend the service life of CT pipes, save repair and replacement cost
With with high commercial value.At ensuring metal target disc and graphite temperature at weld no more than 1200 DEG C, ball bearing
Under the premise of ball temperature is no more than 450 DEG C, it can be obtained by emulation, the highest of traditional structure CT tube assemblies continuously loads power about
Only 6kW；After taking the high-performance heat dissipation anode assemblies that the present embodiment one provides, the highest of CT tube assemblies continuously loads power can
Reach 9kW or so, compared to improving about 50%.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (10)
1. a kind of anode assemblies for X ray CT pipe, including anode disc and the shell being sleeved on the anode disc, spy
Sign is, multiple annular grooves are provided on the anode disc, and the shell has annulus identical with annular groove quantity.
2. being used for the anode assemblies of X ray CT pipe as described in claim 1, which is characterized in that the annular groove and the circle
Ring agrees with one by one.
3. being used for the anode assemblies of X ray CT pipe as described in claim 1, which is characterized in that the anode disc and described
Shell keeps identical current potential.
4. being used for the anode assemblies of X ray CT pipe as described in claim 1, which is characterized in that set in the bottom of the shell
There are two semi-circular shape accesses, and cover plate for sealing is used in combination to connect.
5. being used for the anode assemblies of X ray CT pipe as claimed in claim 4, which is characterized in that the bottom of the shell is provided with
Two openings, for flowing in and out coolant liquid.
6. being used for the anode assemblies of X ray CT pipe as claimed in claim 5, which is characterized in that the shell and anode disc
It is grounded simultaneously.
7. being used for the anode assemblies of X ray CT pipe as claimed in claim 5, which is characterized in that the coolant liquid is water base cold
But liquid, composition include ethylene glycol, deionized water, preservative and antirust agent.
8. being used for the anode assemblies of X ray CT pipe as described in claim 1, which is characterized in that the material of annulus in the shell
Matter is molybdenum, surface plasma spray aluminum oxide titanium.
9. being used for the anode assemblies of X ray CT pipe as claimed in claim 8, which is characterized in that the titanium aluminum oxide is AT13
Or AT40.
10. being used for the anode assemblies of X ray CT pipe as described in claim 1, which is characterized in that the material of annulus in the shell
Matter is stainless steel, and annealing in hydrogen atmosphere Darkening process is done on surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810853061.0A CN108766861A (en) | 2018-07-30 | 2018-07-30 | A kind of anode assemblies for X ray CT pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810853061.0A CN108766861A (en) | 2018-07-30 | 2018-07-30 | A kind of anode assemblies for X ray CT pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108766861A true CN108766861A (en) | 2018-11-06 |
Family
ID=63971886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810853061.0A Pending CN108766861A (en) | 2018-07-30 | 2018-07-30 | A kind of anode assemblies for X ray CT pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108766861A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110680364A (en) * | 2019-11-16 | 2020-01-14 | 新乡市特美特热控技术股份有限公司 | Cooling method and cooling system for high-power X-ray tube assembly |
| CN115241030A (en) * | 2022-07-22 | 2022-10-25 | 麦默真空技术无锡有限公司 | CT bulb tube |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013069826A1 (en) * | 2011-11-07 | 2013-05-16 | 주식회사 엑스엘 | Rotating anode x-ray tube structure having improved heat radiation efficiency |
| CN107546089A (en) * | 2016-08-04 | 2018-01-05 | 上海丞铭电子技术有限公司 | A kind of high power x-ray bulb |
| CN207602513U (en) * | 2017-11-29 | 2018-07-10 | 上海钧安医疗科技有限公司 | A kind of novel high-capacity x ray tube radiator structures |
-
2018
- 2018-07-30 CN CN201810853061.0A patent/CN108766861A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013069826A1 (en) * | 2011-11-07 | 2013-05-16 | 주식회사 엑스엘 | Rotating anode x-ray tube structure having improved heat radiation efficiency |
| CN107546089A (en) * | 2016-08-04 | 2018-01-05 | 上海丞铭电子技术有限公司 | A kind of high power x-ray bulb |
| CN207602513U (en) * | 2017-11-29 | 2018-07-10 | 上海钧安医疗科技有限公司 | A kind of novel high-capacity x ray tube radiator structures |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110680364A (en) * | 2019-11-16 | 2020-01-14 | 新乡市特美特热控技术股份有限公司 | Cooling method and cooling system for high-power X-ray tube assembly |
| CN115241030A (en) * | 2022-07-22 | 2022-10-25 | 麦默真空技术无锡有限公司 | CT bulb tube |
| CN115241030B (en) * | 2022-07-22 | 2023-11-17 | 麦默真空技术无锡有限公司 | CT bulb tube |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20181106 |