CN109830420A - A kind of annular X-ray emitter of fixed electron gun - Google Patents
A kind of annular X-ray emitter of fixed electron gun Download PDFInfo
- Publication number
- CN109830420A CN109830420A CN201910307910.7A CN201910307910A CN109830420A CN 109830420 A CN109830420 A CN 109830420A CN 201910307910 A CN201910307910 A CN 201910307910A CN 109830420 A CN109830420 A CN 109830420A
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- Prior art keywords
- ring
- electron gun
- ray
- anode
- annular
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- 239000000498 cooling water Substances 0.000 claims abstract description 7
- 238000010894 electron beam technology Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000003574 free electron Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000001883 metal evaporation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/49—Pick-up adapted for an input of electromagnetic radiation other than visible light and having an electric output, e.g. for an input of X-rays, for an input of infrared radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- X-Ray Techniques (AREA)
Abstract
The present invention relates to the invention discloses a kind of annular X-ray emitter of fixed electron gun, the electron gun including multiple settings circumferentially fixed in ring vaccum chamber, the anode scoring ring of fixed setting, and the detector rings being coaxially disposed side by side with anode scoring ring.Setting has the anode target cooling water channel and detector cooling water channel of annular respectively in the ring body of anode scoring ring and detector rings.The fixed metallic target of annular of the invention no longer carries out the rotation of high speed around axle center, so that the stress condition of metallic target be made greatly to improve.The heat that metallic target generates is taken away export by the coolant liquid in the cooling pipe of annular, solves the problems, such as that the overheat of metallic target and thermal capacity are limited, to enable X-ray emitter to continuously send out ray for a long time, so that metallic target is hardly damaged.Since endless metal target no longer rotates, metallic target is hardly damaged, so that the service life of X-ray emitter is greatly improved.
Description
Technical field
The present invention relates to technical field of medical equipment, especially a kind of annular X-ray emitter of fixed electron gun.
Background technique
In medical imaging field, X-ray emitter is the core equipment of X ray image equipment.X-ray emitter generates X
After ray, Radiolucent object, the ray through overdamping is got on detector later, and detector receives X-ray and generates figure
As data.
The basic principle of X-ray emitter is that the electronics that electron gun generates passes through the acceleration of electric field, is beaten later in metallic target
Upper (this metallic target is generally tungsten alloy), makes the free electron of the part of atoms on metallic target to high energy order transition later, subsequent
This high level free electron discharges photon to low energy order transition.This photon is x-ray photon.In above structure, electronics
Rifle and metallic target are encapsulated in a glass container, are vacuum state in container.
Among the above process, about 1 percent conversions of electric energy are fully entered for X-ray, remaining 90 about percent
Nine energy converts for heat.Therefore in order to lasting generation X-ray, metallic target has very big thermal capacity, Huo Zhejin
Belong to the heat generated on target to allow for quickly conducting.Due to one of the electronics constant bombardment metallic target after accelerating
The temperature in the region of very little, this region can be very high, and prolonged bombardment will lead to metal evaporation herein, influences subsequent X and penetrates
The generation of line.In order to solve this problem, metallic target has been designed to discoid and can be rotatable about an axis, and allows electron beam to exist with this
The bombarded point of metallic target becomes toroid.But the problem of thus bringing is that the heat generated on rotating metallic target is difficult to export
(guaranteeing to allow heat that can continue to export while persistently rotation).So the problem of bringing is, X-ray emitter cannot continue to grow
The work of time, meanwhile, in order to guarantee the lasting unwrapping wire of a period of time, the volume of metallic target is bigger, is guaranteed with this bigger
Thermal capacity.The above problem results in that X-ray emitter volume is big, and weight is big, cannot continue unwrapping wire for a long time.Simultaneously because
The shell of vacuum chamber is glass material, easy to break, and metallic target wants long-time high speed rotation when working, and metallic target is easy to damage, into
And result in X-ray emitter and integrally easily damage, service life is very short.
Summary of the invention
For the applicant for the disadvantage in above-mentioned existing production technology, heat, type discharge can quickly be exported by providing one kind
Line, the annular X-ray emitter of fixed electron gun with long service life.
The technical solution adopted in the present invention is as follows:
A kind of annular X-ray emitter of fixed electron gun, including electron gun, anode scoring ring and detector rings, feature
It is: the anode scoring ring fixed setting；The electron gun is multiple, the circumferentially fixed setting in ring vaccum chamber.
It is further characterized by: the electron gun is circumferential in ring vaccum chamber uniformly or non-uniformly to be arranged.
It is further: to be provided with annular cooling water road in the ring body of the anode scoring ring and/or detector rings.
The electron gun is fixed on electron gun support frame.
The electron gun support frame is located in vacuum (-tight) housing ring, and the vacuum (-tight) housing ring and anode scoring ring cooperatively form the annular
Vacuum chamber.
There is ray window ring, the outgoing of ray window ring described in X-ray transparent on the vacuum (-tight) housing ring inner wall.
The X-ray of outgoing forms X-ray covering of the fan；Multiple X-ray covering of the fans cover the entire detector rings
Search coverage.
The ring vaccum chamber, anode scoring ring and detector rings are coaxially disposed side by side.
The electron beam of the electron gun transmitting, to directive anode scoring ring, is penetrated along the anode target annulate shaft after X ray excited
To the search coverage of the detector rings opposite with incoming position.
Preferred: the electron gun is 6.
Beneficial effects of the present invention are as follows:
(1) solve the problems, such as that metallic target is easily damaged.Metallic target used in the present invention is the fixed metallic target of annular,
Since metallic target no longer carries out the rotation of high speed around axle center, so that the stress condition of metallic target be made greatly to improve.
(2) solve the problems, such as that X-ray emitter metallic target is not easy quickly to export heat.Annular used in the present invention
The cooling pipe of annular is built-in in metallic target, cooling pipe is connected with extraneous radiator, the coolant liquid in cooling pipe
The heat that metallic target generates is taken away, and heat is dissipated in environment by extraneous radiator.Heat is generated on metallic target
It is rapidly exported, so that metallic target is hardly damaged.
(3) solve the problems, such as that X-ray emitter can not continue unwrapping wire for a long time.The present invention is due to having used annular
Fixation metallic target, the coolant liquid in metallic target can rapidly export the heat that metallic target generates, and solve metallic target
Overheat and the limited problem of thermal capacity, so that X-ray emitter be enable to continuously send out ray for a long time.
(4) solve the problems, such as that the X-ray emitter service life is short.Endless metal target of the invention no longer rotates, and metallic target is not
It is easy to damage, so that the service life of X-ray emitter is greatly improved.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is half sectional view of the present invention.
Fig. 3 is main view (full sectional view) of the invention.
Wherein: 1, electron gun；2, anode scoring ring；3, detector rings；4, electron gun support frame；5, vacuum (-tight) housing ring；6, X-ray
Covering of the fan；7, ray window ring；21 ,-anode target cooling water channel；31, detector cooling water channel.
Specific embodiment
Specific embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in Figure 1, Figure 2 and Figure 3, a kind of annular X-ray emitter of fixed electron gun, including it is multiple in ring vaccum
The electron gun 1 of circumferentially fixed setting in chamber, the anode scoring ring 2 and detector rings 3 of fixed setting.Ring vaccum chamber, anode scoring ring
2 and detector rings 3 be coaxially disposed side by side.The anode target that annular is respectively arranged in the ring body of anode scoring ring 2 and detector rings 3 is cold
But water channel 21 and detector cooling water channel 31.
Electron gun 1 is fixed on electron gun support frame 4.Electron gun support frame 4 is located in vacuum (-tight) housing ring 5, vacuum (-tight) housing
Ring 5 and anode scoring ring 2 cooperatively form ring vaccum chamber.The electron beam that electron gun 1 emits is along the axial directive anode of anode scoring ring 2
Scoring ring 2, the search coverage of the X ray excited rear directive detector rings 3 opposite with incoming position.Have on 5 inner wall of vacuum (-tight) housing ring
Ray window ring 7, X-ray transparent ray window ring 7 are emitted.The X-ray of outgoing forms X-ray covering of the fan 6；Multiple X-ray covering of the fans 6 cover
The search coverage of entire detector rings 3.
Preferred: the electron gun 1 is 6, is evenly arranged on electron gun support frame 4.
Metallic target used in the present invention is endless metal target, there is the cooling pipe of annular in endless metal target.Cooling tube
Coolant liquid in road takes away rapidly the heat that metallic target generates.Electron gun is fixed on electron gun fixed frame, and electron gun is fixed
Frame is fixed on the circumferencial direction in the inside of X-ray emitter shell, multiple electron guns and its fixed frame along endless metal target
Arrangement.The stress condition of metallic target is set greatly to improve, so that metallic target is hardly damaged.X-ray emitter shell is by endless metal
Target, electron gun fixed frame, electron gun wrap up, and in the outlet of X-ray, there is an X-ray window, X-ray window is fixed on X-ray
On the shell of generator.Above-mentioned multiple X electron guns successively time division emission electronics, to make on metal ring target successively timesharing not
X-ray is generated on same position.To prevent metal evaporation caused by constant bombardment metallic target the same area.
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right
It is required that within protection scope of the present invention, any type of modification can be made.
Claims (4)
1. a kind of annular X-ray emitter of fixed electron gun, including electron gun, anode scoring ring and detector rings, feature exist
In: the anode scoring ring fixed setting；The electron gun is multiple, the circumferentially fixed setting in ring vaccum chamber, the electronics
Rifle is circumferential in ring vaccum chamber uniformly or non-uniformly to be arranged；It is provided in the ring body of the anode scoring ring and/or detector rings
Annular cooling water road, the electron gun are fixed on electron gun support frame, and the electron gun support frame is located at vacuum (-tight) housing ring
Interior, the vacuum (-tight) housing ring and anode scoring ring cooperatively form the ring vaccum chamber.
2. a kind of annular X-ray emitter of fixed electron gun as described in claim 1, it is characterised in that: the vacuum (-tight) housing
There is ray window ring, the X-ray of the outgoing of ray window ring described in X-ray transparent, outgoing forms X-ray covering of the fan on ring inner wall；
Multiple X-ray covering of the fans cover the search coverage of the entire detector rings.
3. a kind of annular X-ray emitter of fixed electron gun as described in claim 1, it is characterised in that: the annular is true
Cavity, anode scoring ring and detector rings are coaxially disposed side by side, and the electron beam of electron gun transmitting is along the anode target annulate shaft to penetrating
To anode scoring ring, the search coverage of the X ray excited rear directive detector rings opposite with incoming position.
4. a kind of annular X-ray emitter of fixed electron gun as described in claim 1, it is characterised in that: the electron gun
It is 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018103546364 | 2018-04-19 | ||
| CN201810354636.4A CN108417471A (en) | 2018-04-19 | 2018-04-19 | A kind of annular X-ray emitter of fixed electron gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109830420A true CN109830420A (en) | 2019-05-31 |
| CN109830420B CN109830420B (en) | 2021-07-30 |
Family
ID=63135908
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810354636.4A Pending CN108417471A (en) | 2018-04-19 | 2018-04-19 | A kind of annular X-ray emitter of fixed electron gun |
| CN201910307910.7A Active CN109830420B (en) | 2018-04-19 | 2019-04-17 | Annular X-ray generator for fixing electron gun |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810354636.4A Pending CN108417471A (en) | 2018-04-19 | 2018-04-19 | A kind of annular X-ray emitter of fixed electron gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108417471A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122952A (en) * | 1994-09-28 | 1996-05-22 | 西门子公司 | X-ray tube with ring vaccum case |
| CN1550215A (en) * | 2003-05-19 | 2004-12-01 | Ge医疗系统环球技术有限公司 | Stationary computerized tomography system with small-sized X-ray source assembly |
| US20080063145A1 (en) * | 2006-09-12 | 2008-03-13 | Hamill James J | Apparatus and method for rapidly switching the energy spectrum of diagnostic X-ray beams |
| CN103385732A (en) * | 2013-07-25 | 2013-11-13 | 中国科学院苏州生物医学工程技术研究所 | Static CT (Computed Tomography) scanner |
| CN104362063A (en) * | 2014-12-05 | 2015-02-18 | 中国科学院深圳先进技术研究院 | Integrally-packaged carbon nano-radiation source for computed tomography (CT) imaging system |
| CN106941062A (en) * | 2017-04-20 | 2017-07-11 | 上海宏精医疗器械有限公司 | A kind of negative electrode tilting X-ray apparatus |
-
2018
- 2018-04-19 CN CN201810354636.4A patent/CN108417471A/en active Pending
-
2019
- 2019-04-17 CN CN201910307910.7A patent/CN109830420B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122952A (en) * | 1994-09-28 | 1996-05-22 | 西门子公司 | X-ray tube with ring vaccum case |
| CN1550215A (en) * | 2003-05-19 | 2004-12-01 | Ge医疗系统环球技术有限公司 | Stationary computerized tomography system with small-sized X-ray source assembly |
| US20080063145A1 (en) * | 2006-09-12 | 2008-03-13 | Hamill James J | Apparatus and method for rapidly switching the energy spectrum of diagnostic X-ray beams |
| CN103385732A (en) * | 2013-07-25 | 2013-11-13 | 中国科学院苏州生物医学工程技术研究所 | Static CT (Computed Tomography) scanner |
| CN104362063A (en) * | 2014-12-05 | 2015-02-18 | 中国科学院深圳先进技术研究院 | Integrally-packaged carbon nano-radiation source for computed tomography (CT) imaging system |
| CN106941062A (en) * | 2017-04-20 | 2017-07-11 | 上海宏精医疗器械有限公司 | A kind of negative electrode tilting X-ray apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109830420B (en) | 2021-07-30 |
| CN108417471A (en) | 2018-08-17 |
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