CN206907734U - X-ray tube - Google Patents
X-ray tube Download PDFInfo
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- CN206907734U CN206907734U CN201720791076.XU CN201720791076U CN206907734U CN 206907734 U CN206907734 U CN 206907734U CN 201720791076 U CN201720791076 U CN 201720791076U CN 206907734 U CN206907734 U CN 206907734U
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Abstract
The utility model discloses a kind of X-ray tube, including housing, negative electrode, anode and at least two fixing devices.Negative electrode is located in housing and draws electronic beam current from multiple positions.Anode has strip, is aligned in housing and with negative electrode to produce Multi-Beam X-Ray from multiple target spots.Fixing device is arranged on housing, and at least two different positions of the length direction in the anode are connected with anode so that the distance between multiple positions of the generation electronic beam current of negative electrode and multiple target spots of anode keep uniform.X-ray tube can discharge stress when producing larger linear expansion due to temperature rise during the anode working of strip, maintain the spacing between negative electrode and anode uniform.
Description
Technical field
Embodiment of the present utility model is related to a kind of X-ray tube, more particularly, it relates to which one kind can produce X from multiple target spots
The X-ray tube of ray.
Background technology
Ray has a wide range of applications in fields such as industrial nondestructive testing, safety inspection, medical diagnosis and treatments.Produce X
The device of ray is referred to as x-ray source, generally includes the servicing units such as X-ray tube, power supply and control system, cooling and shielding.X is penetrated
Spool mainly includes housing and installed in housing inner cathode and anode.Negative electrode produce electronic beam current, electronic beam current by negative electrode with
High voltage electric field between anode accelerates, and hits anode target surface, produces X ray.Anode needs to load tens kilovolts to hundreds of thousand
The high voltage of volt, and need to keep extraordinary electric insulation with the housing of ray tube (being usually ground potential), due to anode lengths
With quality very little, therefore it is supported usually using single insulating fixing structure (such as glass column) opposing rays tube shell.
In the course of work, anode receives beam bombardment, can produce substantial amounts of heat, the temperature meeting acute variation of anode, usual temperature rise
For hundreds of degrees Celsius, the thermal expansion effects of anode can make its size change.Due to traditional anode dimension very little, it is usually
Grade, therefore influence of the change in size of thermal expansion to structure can generally also be ignored.Powerful X-ray tube is using rotation
The structure of anode, i.e. anode are disc, can be rotated at a high speed along the fixing axle at center, electronic beam current bangs from a fixed position
The edge of anode disc is hit, anode disc receives the bombardment of electron amount by rotating the different zones of disk in turn, real
Existing thermal power is disperseed.This anode is fixed again by the single fixed position of axis.
It has developed a kind of Mutiple Targets (focus) X-ray tube (or distributed X-ray source), including housing, be arranged on shell
Multiple negative electrodes and anode in body, anode are provided with multiple target spots, to produce X ray from multiple diverse locations.This distributed X ray
Source from multiple different positions under slave mode due to that with multiple negative electrodes and multiple target spots, can produce X ray.
Utility model content
Embodiment technical problem to be solved of the present utility model is, there is provided a kind of X-ray tube, in strip anode
When producing larger linear expansion due to temperature rise in the course of work, stress can be discharged, is maintained between negative electrode and anode
Spacing is uniform.
According to the embodiment of one side of the present utility model, there is provided a kind of X-ray tube, including housing, negative electrode, anode and
At least two fixing devices.Negative electrode is located in housing and is configured to draw electronic beam current from multiple positions.Anode has length
Bar shaped, in housing and it is configured to be aligned with negative electrode to produce Multi-Beam X-Ray from multiple target spots.Fixing device is installed
On the housing, and it is configured to connect at least two different positions of the length direction of the anode and the anode
Connect so that the distance between multiple positions of the generation electronic beam current of the negative electrode and multiple target spots of the anode keep equal
It is even.
According to a kind of X-ray tube of embodiment of the present utility model, at least one in fixing device is configured to allow for
The anode moves at least one link position of at least one fixing device and housing relative to the housing.
According to a kind of X-ray tube of embodiment of the present utility model, at least one fixing device is configured to allow for described
Anode moves only on the length direction relative to the housing.
According to a kind of X-ray tube of embodiment of the present utility model, each fixing device includes：Main part, installation
On the housing；And first joint portion, it is arranged on the main part.The second joint portion, institute are provided with the anode
State the first joint portion to be movably coupled together with the second joint portion, to allow anode phase only on the length direction
Moved for the housing.
According to a kind of X-ray tube of embodiment of the present utility model, one in first joint portion and the second joint portion
Individual to be included in the sliding groove extended on the length direction, another in first joint portion and the second joint portion includes quilt
The slide assemblies for being maintained in the sliding groove and being slided along the length direction.
According to a kind of X-ray tube of embodiment of the present utility model, the sliding groove includes：From first joint portion and
The opening portion that the surface of one in second joint portion caves inward and the lateral concave shape of side wall from the opening portion into
Constriction.The slide assemblies include：The linking arm being inserted into the opening portion；And with the linking arm vertical connection simultaneously
Restrained portion in the constriction so that the slide assemblies can be in the sliding groove only in the length side
Upward sliding simultaneously prevents the slide assemblies from departing from the sliding groove.
According to a kind of X-ray tube of embodiment of the present utility model, the sliding groove is formed on the anode, the cunning
Dynamic component is fixed on the main part.
According to a kind of X-ray tube of embodiment of the present utility model, the main part is provided with through hole, the through hole
It is interior anode connector to be installed or for making the protection pipe of cable or cooling medium pass through the through hole.
According to a kind of X-ray tube of embodiment of the present utility model, the housing has elongated hexahedron substantially
Shape, and the hexahedron includes：Extend in the longitudinal direction and provided with the first of the Windows for being used to draw the X ray
Side surface, second side surface relative with first side surface, upper surface, lower surface and two end surfaces.The fixation
Device includes being connected to two device for fixing end part at the anode both ends, and one in two device for fixing end part is configured to
The anode is allowed to be moved in the link position of one fixing device and housing relative to the housing.
According to a kind of X-ray tube of embodiment of the present utility model, the fixing device also includes being arranged on described in two
Between device for fixing end part and at least one intermediate retainer on an upper is set.
According to a kind of X-ray tube of embodiment of the present utility model, two device for fixing end part are separately mounted to institute
State on upper surface and be located at respectively near two ends of the housing.
According to a kind of X-ray tube of embodiment of the present utility model, the housing has elongated hexahedron substantially
Shape, and the hexahedron includes in the longitudinal direction extending and provided with the first of the Windows for being used to draw the X ray
Side surface and upper surface.The negative electrode includes multiple sub- negative electrodes being sequentially arranged, and the anode includes multiple length being sequentially arranged
The sub- anode of bar shaped, every sub- anode are configured to be aligned with respective sub- negative electrode.The fixing device is arranged on the upper table
On face, and a fixing device is provided with each sub- anode so that the generation electronic beam current of the sub- negative electrode
The distance between multiple target spots of multiple positions and the sub- anode keep uniform.
According to a kind of X-ray tube of embodiment of the present utility model, the overall length-width ratio of the anode of the strip is more than
10, the length-width ratio of each sub- anode is less than 10, and preferential is no more than 5.
According to the X-ray tube of above-mentioned working Examples of the present utility model, by setting fixing device, in the sun of strip
When producing larger linear expansion due to temperature rise in the course of work of pole, stress can be discharged, is maintained between negative electrode and anode
Spacing it is uniform, so as to realize that anode accurately reliably positions.
Brief description of the drawings
It is of the present utility model these and/or other aspect and advantage from description of preferred embodiments below in conjunction with the accompanying drawings
It will be apparent and be readily appreciated that, wherein：
Fig. 1 is according to a kind of schematic perspective view of the X-ray tube of exemplary embodiment of the present utility model；
Fig. 2 is the combination side of the first joint portion and the second joint portion according to a kind of exemplary embodiment of the present utility model
The schematic perspective view of formula；
Fig. 3 A-3E are the first joint portion and the second joint portion according to further exemplary embodiment of the present utility model
Combination schematic cross-section；
Fig. 4 A-4C are illustrated according to the three-dimensional of fixing device of different shapes of exemplary embodiment of the present utility model
Figure；
Fig. 5 A-5G are the different positions for showing to be arranged on housing according to the fixing device of exemplary embodiment of the present utility model
The schematic diagram put；And
Fig. 6 is section according to the anode of another exemplary embodiment of the present utility model and the mounting means of fixing device
Face schematic diagram.
Description of reference numerals
1：Housing；
11：First side surface；
12：Second side surface；
13：Upper surface；
14：Lower surface；
15、16：End surfaces；
2：Negative electrode；
2’：Sub- negative electrode；
3：Anode；
3’：Sub- anode；
31：Second joint portion；
32：Sliding groove；
321、323：Opening portion；
322、324：Constriction；
4：Windows；
5：Cathode connector；
6：Anode connector；
7、76：Fixing device；
71：Main part；
72：First joint portion；
73、74；Device for fixing end part；
75：Intermediate retainer；
711：Through hole；
721：Linking arm；
723：First arm；
724：Second arm；
722、725、726：Restrained portion；
E：Electronic beam current；
H1, h2, h3：The distance between anode and negative electrode.
Embodiment
Throughout the specification, similar reference represents similar part.
Below will be by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
In the description, same or analogous drawing reference numeral indicates same or analogous part.It is following referring to the drawings to the utility model
The explanation of embodiment is intended to explain overall utility model design of the present utility model, and is not construed as to this reality
Limited with new one kind.
In addition, in the following detailed description, for ease of explaining, many concrete details are elaborated to provide to present disclosure
The comprehensive understanding of embodiment.It should be apparent, however, that one or more embodiments can also in the case of these no details
It is carried out.In other cases, known construction and device is diagrammatically embodied to simplify accompanying drawing.
Conceived according to the utility model of the utility model generally, a kind of X-ray tube includes：Housing；Negative electrode, the negative electrode
In housing and it is configured to draw electronic beam current from multiple positions；Anode, the anode are located in housing, have strip
Shape, and be configured to be aligned with negative electrode to produce Multi-Beam X-Ray from multiple target spots；And at least two fixing devices, installation
On the housing, and it is configured to connect at least two different positions of the length direction of the anode and the anode
Connect so that the distance between multiple positions of the generation electronic beam current of the negative electrode and multiple target spots of the anode keep equal
It is even.
Fig. 1 is according to a kind of schematic perspective view of the X-ray tube of exemplary embodiment of the present utility model.
As shown in figure 1, housing 1, multiple negative electrodes are included according to a kind of X-ray tube of exemplary embodiment of the present utility model
2nd, anode 3 and multiple fixing devices 7.High vacuum is formed in housing 1, high vacuum seal environment is provided for negative electrode and anode.Negative electrode 2
In housing 1 and it is configured to draw electronic beam current E from multiple positions.Anode 3 have strip, in housing 1 simultaneously
And it is configured to be aligned with negative electrode 2 to produce Multi-Beam X-Ray from multiple target spots.Specifically, the electronic beam current drawn by negative electrode 2
E is accelerated by the high voltage electric field between negative electrode and anode and obtains energy, hits multiple target spots (or focus) on anode,
So as to produce Multi-Beam X-Ray X.X ray is drawn out to outside ray tube by the Windows 4 being arranged on housing 1 and applied.Extremely
Few two fixing devices 7 are arranged on housing 1, and are configured at least two different positions of the length direction of anode 3
It is connected with the anode 3 so that the distance between multiple positions of the generation electronic beam current of negative electrode 2 and multiple target spots of anode are protected
Hold uniformly.
According to the X-ray tube of the utility model embodiment, negative electrode 2 includes multiple cathode electrode units, can be from each negative electrode list
Member produces electronic beam current E respectively.Anode has string configuration, and X ray is produced from multiple target spots (focus) of anode 3, multiple
Target spot is arranged as straight line.The lineal measure or length-width ratio of whole anode 3 depend on the number for being used to produce the target spot of X ray
Amount and the density degree of target spot arrangement.For example, it can be reached according to the target spot quantity of the X-ray tube of the utility model embodiment hundreds of
Individual, the length of anode can reach several centimetres even up to a hundred centimetres.Anode 3 is applied in the high voltage that opposing cathode 2 is positive potential,
Usually tens kilovolts to hundreds of kilovolts, thus anode 3 can establish high voltage electric field between negative electrode 2 and anode 3.From negative electrode
Electronic beam current is acted on by high voltage electric field caused by unit, is accelerated backward anode movement, obtains high-energy and finally hits
Anode, produce X ray and launch, its impingement position is referred to as anode focus or target spot.Anode receive electron beam Hong
After hitting, temperature rise will cause to produce thermal expansion in length direction.By setting fixing device, make it in strip anode work
When producing larger linear expansion due to temperature rise during work, stress can be discharged, between maintaining between negative electrode and anode
Away from uniform, so as to realize that anode accurately reliably positions.
Electronic beam current caused by negative electrode only will not just lose because of being collided with air molecule under vacuum conditions, cloudy
High voltage electric field between pole and anode also only will not just puncture sparking under high vacuum environment.Cathode connector 5 and anode connect
Connect device 6 to be arranged on X ray tube shell, on the one hand guide to the electric connecting point of negative electrode and anode outside X ray tube shell；Separately
On the one hand the high vacuum seal characteristic of housing is also kept, i.e., can not destroy the high vacuum seal requirement of housing script.
In one embodiment, at least one in fixing device 7 is configured to allow for anode 3 at least one fixed dress
Put and moved with least one link position of housing 1 relative to housing 1.Further, at least one fixing device 7 is configured to
Anode 3 is allowed only to be moved on the length direction of anode 3 relative to housing 1.
The anode of the utility model embodiment is strip, for example, the length-width ratio of anode is typically larger than 10, it is even up to long
Wide ratio is tens.If also anode is fixed on housing 1 in a point using a fixing device, with the fixing point apart
Remote position, position error enlarge-effect can be produced, realize that precise positioning has very big difficulty, or even if first installation is fixed
Level is true, is still difficult to the long-time accurate positioning for ensureing position farther out.For example, the anchor point during transport and use
A small amount of deformation also can be because of error enlarge-effect so that anode position changes or position inaccurate.The change of anode position is fixed
Position is inaccurate, can be negatively affected to the Electric Field Distribution between negative electrode, anode so that the quality of the X ray of final products is special
Property (including the focus size of X ray, shape, position and X-ray intensity etc.) does not meet initial design objective.
According to the X-ray tube of the utility model embodiment, during the anode working of strip, electronics caused by negative electrode
Line is accelerated by high voltage electric field and obtains energy after bombarding anode, and the kinetic energy of electronic beam current more than 99% is converted into heat energy,
Therefore temperature meeting acute variation, typical temperature change turn to hundreds of degrees Celsius to anode at work.Such as the tungsten for length for 1m
Made of material for anode, even if only 200 degree of temperature change, its thermal expansion can also reach about 0.9 millimeter.If anode and
Two fixing points between fixing device can then produce great thermal expansion stress, damage sun all using the connection being completely fixed
Pole or the fixing device of anode.Therefore, in embodiment of the present utility model, for connecting the fixed dress of strip anode
Put, an only point is connected using fixed form in the longitudinal direction, and another point is connected using manner.So, temperature is worked as
When degree rise produces larger linear expansion, due to fixing device 7 be configured to allow for anode 3 only in the longitudinal direction relative to
Housing 1 moves, and can so discharge thermal expansion stress, maintains the spacing between negative electrode and anode uniform so that the X of final products
The mass property (including the focus size of X ray, shape, position and X-ray intensity etc.) of ray has stability.
Fig. 2 is the combination side of the first joint portion and the second joint portion according to a kind of exemplary embodiment of the present utility model
The schematic perspective view of formula.As illustrated in fig. 1 and 2, each fixing device includes the main part 71 being arranged on housing 1 and set
The first joint portion 72 on main part 71.The second joint portion 31, the first joint portion 72 and the second joint portion are provided with anode 3
31 are movably coupled together, to allow anode 3 only to be moved in the longitudinal direction relative to housing 1.
More specifically, referring to Fig. 1 and 2, three-dimensional coordinate orientation, the length side of anode 3 can be carried out to the anode 3 of strip
To being Y-axis for X-axis, width, short transverse is Z axis.Being flexibly connected by by setting between fixing device 7 and anode 3
The first joint portion 72 and the moving connecting mechanism for the second joint portion 31 composition being arranged on anode 3 on the securing means is real
Existing, this moving connecting mechanism allows anode 3 only to be moved in the X-axis direction relative to housing 1.One-way movable bindiny mechanism includes
Matrix fixed structure (sliding groove) and formula bascule (slide assemblies).
In one embodiment, the second joint portion 31 is included in the slip extended on the length direction (X-direction) of anode 3
Groove 32, the slide assemblies of the first joint portion 72 are maintained at the slide assemblies slided in sliding groove 32 and along its length.More
Body, sliding groove 32 include opening portion 321 and constriction 322, opening portion 321 from the surface of one in the second joint portion 31 to
Sunken inside, the lateral concave shape of side wall of the constriction 322 from opening portion 321 into.Slide assemblies include linking arm 721 and restrained portion
722, linking arm 721 is inserted into opening portion 321；Restrained portion 722 and the vertical connection of linking arm 721 are simultaneously arranged on constriction
In 322 so that slide assemblies only can in the longitudinal direction slide in sliding groove 32 and prevent slide assemblies from departing from sliding groove
32.That is, the restrained portion 722 in slide assemblies is disposed substantially perpendicularly to linking arm protrusion, can so allow
Slide assemblies can only move on the length direction (X-direction) of anode 3, and limit slippage component moves in Y-axis and Z-direction
It is dynamic.It is appreciated that sliding groove 32 and slide assemblies have shape complimentary to one another, slide assemblies are arranged in sliding groove.
In one embodiment, the sliding groove 32 of the second joint portion 31 is formed on anode, and the slide assemblies are fixed on
On the main part 71 of fixing device 7.In a kind of alternate embodiment, slide assemblies are arranged on anode 3, the shape of sliding groove 32
Into on the main part 71 of fixing device 7.
In the embodiment shown in Figure 2, the cross section of the slide assemblies of the joint portion 72 of sliding groove 32 and first all has big
CauseShape.
Fig. 3 A-3E are the first joint portion and the second joint portion according to further exemplary embodiment of the present utility model
Combination schematic cross-section.
In the embodiment as shown in fig. 3 a, in section view, the sliding groove of the second joint portion 31 has " L " shape substantially
And the opening portion 323 including the side walls collapse from the second joint portion 31 and the ending vertical from the opening portion are in opening portion 323
The constriction 324 of extension, the slide assemblies of the first joint portion 72 include the first arm being resisted against in the side wall of the second joint portion 31
723rd, the second arm 724 for being inserted into perpendicular to first arm in the opening portion 323 and hung down from the end of the second arm 724
The restrained portion 725 directly extended in opening portion 323.
In the embodiment shown in figure 3b, in section view, the sliding groove of the second joint portion 31 and the first joint portion 72
Slide assemblies all there is " mountain " shape substantially.
In the embodiment shown in Fig. 3 C, in section view, the sliding groove of the second joint portion 31 and the first joint portion 72
Slide assemblies all there is " L " shape substantially.
In the embodiment shown in Fig. 3 D, in section view, the constriction and first of the sliding groove of the second joint portion 31
The restrained portion 726 of the slide assemblies of joint portion 72 all has semicircle substantially.
In the embodiment shown in Fig. 3 E, in section view, the sliding groove of the second joint portion 31 and the first joint portion 72
Slide assemblies all there is " ├ " shape substantially.
Fig. 4 A-4C are illustrated according to the three-dimensional of fixing device of different shapes of exemplary embodiment of the present utility model
Figure.
As shown in figs. 4 a-4 c, in one embodiment, the main part 71 is provided with through hole, in the through hole 711
Anode connector 6 is installed or for making the protection pipe of cable or cooling medium pass through the through hole 711.For example,
In a kind of embodiment, the protection of cable or cable for electrically connecting the electronic device in housing (including negative electrode and anode etc.)
Pipe or arrangements of electric connection may be mounted in through hole 711；In another embodiment, for conveying the protection of cooling medium
Pipe connects through through hole 711, and with forming the through hole in Anodic, to be cooled down to anode.
In the embodiment shown in Fig. 4 A, fixing device 7 mainly by be adapted to vacuum environment electrically insulating material form, such as by
The insulating materials such as ceramics, glass, quartz are made.The exterior contour of main part 71 has cuboid substantially；Shown in Fig. 4 B
Embodiment in, the exterior contour of main part 71 has substantial cylindrical；In the embodiment shown in Fig. 4 C, outside main part 71
Contouring has ripple substantially tubular.Protection pipe for conveying cooling medium is installed in through hole 711 or anode connects
In the case of connecing device 6, the main part 71 with bellows form can increase outer surface length, not only expand and external environment condition
Contact area, and improve the electric insulating effect of fixing device.Because anode 3 is typically applied to opposing cathode 2 tens thousand
The high pressure to hundreds of kilovolts is lied prostrate, anode 3 is with respect to X ray tube shell 1 and similar high voltage, therefore fixing device 7 needs
Extraordinary electrical insulation characteristics.In general, on the one hand electric insulating effect depends on the dielectric parameter of material in itself, i.e., in material
The resistance characteristic (i.e. bulk resistor) in portion；On the other hand the material surface between two different voltage sites is additionally depended on apart from (i.e.
Surface resistance), as surface of the anode along fixing device reaches the influence of the distance of housing.The fixed dress of the utility model embodiment
Put in addition to specific material selects, the also length requirement of surface distance, such as the length of fixing device is usually tens mm
To cm more than ten.
Fig. 5 A-5G are the different positions for showing to be arranged on housing according to the fixing device of exemplary embodiment of the present utility model
The schematic diagram put.
In one embodiment, as shown in Fig. 5 A-5G, housing 1 has elongated hexahedral shape substantially, and six faces
Body includes：Extend in the longitudinal direction and the first side surface 11 provided with the Windows 4 for being used to draw X ray, with described the
The second relative side surface 12 of one side surface 11, upper surface 13, lower surface 14 and two end surfaces 15 and 16.Fixing device 7
On housing 1, fixing device 7 includes two device for fixing end part 73 and 74 installed in anode both ends, and two ends are consolidated
Determine one in device 73 and 74 and be configured to allow for the anode 3 in one device for fixing end part 73 or 74 and housing 1
Link position moved relative to housing 1.In example is further carried out, fixing device is also fixed including being arranged on two ends
Between device 73 and 74 and it is arranged at least one intermediate retainer 75 on upper surface 13.Usually, fixing device is in sun
The centre position of pole is attached using fixed form, solid and reliable to realize registration.Anode both ends articulating device
Make the spacing between negative electrode and anode uniform, but anode can carry out appropriate stretch along its length.
In the embodiment shown in Fig. 5 A, device for fixing end part 73 and 74 is all arranged on the upper surface 13 of housing 1 and position
Near two ends of housing, and device for fixing end part 73 and 74 is connected to the both ends of anode 3.Dress is fixed in two ends
Put one in 73 and 74 and be configured to allow for the anode 3 in the company of one device for fixing end part 73 or 74 and housing 1
Position is connect to move relative to housing 1.For example, the device for fixing end part 73 positioned at left side is connected using fixed form with anode 3
Connect, the fixing device 74 positioned at right side is attached using manner with anode 3, and the inside of device for fixing end part 74, which has, to be realized
The protection of anode connector 6, cable or cable that peripheral control unit electrically connects with the electronic device (including anode) in housing
Pipe.In a kind of alternate embodiment, the inside of device for fixing end part 73 and 74 is provided with the protection pipe for cooling medium.Herein
In embodiment, being connected to the device for fixing end part 73 and 74 at the both ends of anode can make the spacing between negative electrode 2 and anode 3 equal
Even, line expansion is not produced because heated by anode 3 is influenceed, and maintains anode consistent with distance of the negative electrode at both ends, i.e. h1=
h2。
In a kind of alternate embodiment, the connected mode of two device for fixing end part 73 and 74 and anode 3 is work
Dynamic connection.The both ends of anode 3 are connected with fixing device 73 and 74 using manner, and anode can be achieved in the course of the work in temperature
During degree rise centered on middle fixing point, to linear expansion caused by both ends.Active connection place is used at the both ends of anode
Stress can be discharged by manner, maintain the stabilization of structure, ensure the relative distance of anode both ends and negative electrode not by anode
The influence of length linear expansion so that the distance between anode and negative electrode apparent surface are uniform.
In the embodiment shown in Fig. 5 B, intermediate retainer 75 is arranged on the upper surface 13 of housing 1；Two ends are consolidated
Determine device 73 and 74 to be separately mounted on two end surfaces 15 and 16 of housing 1 and be connected to the both ends of anode 3.Two ends
One in fixing device 73 and 74 is configured to allow for the anode 3 in one device for fixing end part 73 or 74 and housing
1 link position moves relative to housing 1.For example, the device for fixing end part 73 positioned at left side is entered using fixed form with anode 3
Row connection, the fixing device 74 positioned at right side are attached using manner with anode 3, and the inside of intermediate retainer 75 has
Realize anode connector 6, cable that peripheral control unit electrically connects with the electronic device (including anode) in housing or cable
Protection pipe.In a kind of alternate embodiment, the inside of device for fixing end part 73 and 74, which is provided with, to be used to convey cooling medium
Protection pipe.In this embodiment, being connected to the device for fixing end part 73 and 74 at anode both ends can make between negative electrode 2 and anode 3
Spacing it is uniform, line expansion is not produced because heated by anode 3 is influenceed, and maintains anode and negative electrode in the distance one at both ends
Cause, i.e. h1=h2.In a kind of alternate embodiment, two device for fixing end part 73 and 74 are equal with the connected mode of anode 3
To be flexibly connected.
In the embodiment shown in Fig. 5 C, intermediate retainer 75 is arranged on the upper surface 13 of housing 1；Two ends are consolidated
Determine device to be separately mounted on upper surface and be located near an end of housing 1 and another end of the housing
On end surfaces.For example, a device for fixing end part 73 is arranged on upper surface 13 and near an end of housing 1, separately
On the end surfaces 15 for another end that one device for fixing end part 74 is arranged on housing 1.
In the embodiment shown in Fig. 5 D, a device for fixing end part 73 in two device for fixing end part is arranged on upper table
On face 13 and near an end of housing, another is arranged on the end surfaces 16 of another end of housing 1.Two
One in device for fixing end part 73 and 74 be configured to allow for the anode 3 one device for fixing end part 73 or 74 with
The link position of housing 1 moves relative to housing 1.Have positioned at the inside of device for fixing end part 73 in left side and realize peripheral control unit
The protection pipe of the anode connector 6, cable or the cable that are electrically connected with the electronic device (including anode) in housing.
In the embodiment shown in Fig. 5 E, intermediate retainer 75 is arranged on the upper surface 13 of housing 1；Two ends are consolidated
Determine device 73 and 74 to be separately mounted on the second side surface 12.The inside of intermediate retainer 75, which has, realizes peripheral control unit and shell
The protection pipe of anode connector 6, cable or cable that internal electronic device (including anode) electrically connects.
In the embodiment shown in Fig. 5 F, intermediate retainer 75 is arranged on the upper surface 13 of housing 1, and dress is fixed in end
Put 73 to be arranged on second side surface 12 and near an end of housing 1, device for fixing end part 74 is arranged on shell
On the end surfaces 16 of another end of body 1.
In the embodiment shown in Fig. 5 G, intermediate retainer 75 is arranged on the upper surface 13 of housing 1, and dress is fixed in end
Put 73 to be arranged on upper surface 13 and near an end of housing 1, device for fixing end part 74 is arranged on second surface 12
Go up and be located near the other end of housing 1.
Fig. 6 is section according to the anode of another exemplary embodiment of the present utility model and the mounting means of fixing device
Face schematic diagram.
As shown in fig. 6, in one embodiment, housing 1 has elongated hexahedral shape substantially, and six face
Body includes in the longitudinal direction extending and provided with the first side surface and upper surface of the Windows for being used to draw the X ray
13；Negative electrode includes multiple sub- negative electrodes 2 ' being sequentially arranged；Anode includes the sub- anode 3 ' of multiple strips being sequentially arranged, each
Sub- anode 3 ' is configured to be aligned with respective sub- negative electrode 2 '；Fixing device 76 is arranged on the upper surface 13 of housing 1, Mei Gegu
Determine the housing 1 of one end connection X-ray tube of device 76, other end connexon anode 3 '.Also, it is provided with every sub- anode 3 '
One fixing device 76, each fixing device 76 are to be fixedly connected with the connected mode of respective sub- anode 3 ' so that sub- negative electrode 2 '
The distance between multiple target spots of multiple positions and sub- anode 3 ' of generation electronic beam current h1, h2, h3 ... hn keep uniform.
In this way it can be ensured that every sub- registration of anode 3 ', solid and reliable.Positioned at the fixing device of the approximately mid way between of housing 1
76 inside have the anode connector 6 realized peripheral control unit and electrically connected with the electronic device (including anode) in housing, cable
Or the protection pipe of cable.
According to the X-ray tube of above-described embodiment, strip anode is joined end to end arrangement by the sub- anode 3 ' of two and the above
Form, each sub- anode 3 ' is fixed by a fixing device 76.Pass through electric connection line (such as metal between each sub- anode
Wire) realize electrical connection.The overall length-width ratio of the anode 3 of strip is more than 10；The length-width ratio of each sub- anode 3 ' is excellent less than 10
First is no more than 5；Each sub- anode 3 ' is arranged as a straight line with strip cathode parallel.
According to the X-ray tube of above-mentioned working Examples of the present utility model, by setting fixing device, in the sun of strip
When producing larger linear expansion due to temperature rise in the course of work of pole, stress can be discharged, is maintained between negative electrode and anode
Spacing it is uniform, so as to realize that anode accurately reliably positions.
Although for the purpose illustrated according to being presently considered to be most realistic and preferred embodiment to this reality
It is described in detail with new.It will be understood to those skilled in the art that embodiment described above is all exemplary,
And those skilled in the art can make improvements, the structure described in various embodiments in not recurring structure or
Independent assortment can be carried out in the case of conflict in terms of principle, so as on the basis for solving technical problem of the present utility model
On, realize more kinds of X-ray tubes.
After preferred embodiment of the present utility model is described in detail, those skilled in the art can be clear
Solution, various change can be carried out in the case where not departing from the protection domain of appended claims and spirit with changing, and the utility model is also
It is not only restricted to the embodiment of examples cited embodiment in specification.
Claims (13)
- A kind of 1. X-ray tube, it is characterised in that including：Housing；Negative electrode, the negative electrode are located in housing and are configured to draw electronic beam current from multiple positions；Anode, the anode has strip, in housing and is configured to be aligned with negative electrode to produce from multiple target spots Multi-Beam X-Ray；AndAt least two fixing devices, installation on the housing, and be configured to the anode length direction at least two Individual different position is connected with the anode so that multiple positions of the generation electronic beam current of the negative electrode are more with the anode The distance between individual target spot keeps uniform.
- 2. X-ray tube according to claim 1, it is characterised in thatAt least one in the fixing device be configured to allow for the anode at least one fixing device and housing extremely A few link position moves relative to the housing.
- 3. X-ray tube according to claim 2, it is characterised in thatAt least one fixing device is configured to allow for the anode only on the length direction relative to the housing It is mobile.
- 4. according to the X-ray tube described in any one of claim 1-3, it is characterised in thatEach fixing device includes：Main part, installation is on the housing；AndFirst joint portion, it is arranged on the main part；The second joint portion is provided with the anode, first joint portion is movably coupled together with the second joint portion, To allow the anode to be moved only on the length direction relative to the housing.
- 5. X-ray tube according to claim 4, it is characterised in thatOne in first joint portion and the second joint portion is included in the sliding groove extended on the length direction, and described What another in one joint portion and the second joint portion included being maintained in the sliding groove and slided along the length direction Slide assemblies.
- 6. X-ray tube according to claim 5, it is characterised in thatThe sliding groove includes：Opening portion, caved inward from the surface of one in first joint portion and the second joint portion；AndConstriction, the lateral concave shape of side wall from the opening portion into, andThe slide assemblies include：Linking arm, it is inserted into the opening portion；AndRestrained portion, with the linking arm vertical connection and in the constriction so that the slide assemblies can be Only slided in the sliding groove on the length direction and prevent the slide assemblies from departing from the sliding groove.
- 7. X-ray tube according to claim 6, it is characterised in thatThe sliding groove is formed on the anode, and the slide assemblies are fixed on the main part.
- 8. X-ray tube according to claim 4, it is characterised in thatThe main part is provided with through hole, anode connector is installed in the through hole or for making cable or cooling The protection pipe of medium passes through the through hole.
- 9. according to the X-ray tube described in any one of claim 1-3, it is characterised in thatThe housing has elongated hexahedral shape substantially, and the hexahedron includes：Extend in the longitudinal direction simultaneously The first side surface provided with the Windows for drawing the X ray, second side surface relative with first side surface, Upper surface, lower surface and two end surfaces；The fixing device includes being connected to two device for fixing end part at the anode both ends, in two device for fixing end part One is configured to allow for the anode to be moved in the link position of one fixing device and housing relative to the housing.
- 10. X-ray tube according to claim 9, it is characterised in that the fixing device also includes being arranged on described in two Between device for fixing end part and at least one intermediate retainer on an upper is set.
- 11. X-ray tube according to claim 9, it is characterised in that two device for fixing end part are separately mounted to institute State on upper surface and be located at respectively near two ends of the housing.
- 12. according to the X-ray tube described in any one of claim 1-3, it is characterised in thatThe housing has elongated hexahedral shape substantially, and the hexahedron includes in the longitudinal direction extending and setting There are the first side surface and upper surface for drawing the Windows of the X ray；The negative electrode includes multiple sub- negative electrodes being sequentially arranged,The anode includes the sub- anode of multiple strips being sequentially arranged, and every sub- anode is configured to and respective sub- negative electrode Alignment,The fixing device is set on the upper surface, and a fixed dress is provided with each sub- anode Put so that the distance between multiple positions of the generation electronic beam current of the sub- negative electrode and multiple target spots of the sub- anode are kept Uniformly.
- 13. X-ray tube according to claim 12, it is characterised in thatThe overall length-width ratio of the anode of the strip is more than 10, and the length-width ratio of each sub- anode is less than 10, and preferential is no more than 5。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720791076.XU CN206907734U (en) | 2017-06-30 | 2017-06-30 | X-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720791076.XU CN206907734U (en) | 2017-06-30 | 2017-06-30 | X-ray tube |
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| Publication Number | Publication Date |
|---|---|
| CN206907734U true CN206907734U (en) | 2018-01-19 |
Family
ID=61291946
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720791076.XU Active CN206907734U (en) | 2017-06-30 | 2017-06-30 | X-ray tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216138A (en) * | 2017-06-30 | 2019-01-15 | 同方威视技术股份有限公司 | X-ray tube |
| CN110996486A (en) * | 2019-12-11 | 2020-04-10 | 新鸿电子有限公司 | Liquid cooling circulation cooling system and X ray source system |
-
2017
- 2017-06-30 CN CN201720791076.XU patent/CN206907734U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216138A (en) * | 2017-06-30 | 2019-01-15 | 同方威视技术股份有限公司 | X-ray tube |
| CN110996486A (en) * | 2019-12-11 | 2020-04-10 | 新鸿电子有限公司 | Liquid cooling circulation cooling system and X ray source system |
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