CN204482142U - Electrocurtain accelerator and repellel - Google Patents
Electrocurtain accelerator and repellel Download PDFInfo
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- CN204482142U CN204482142U CN201520186594.XU CN201520186594U CN204482142U CN 204482142 U CN204482142 U CN 204482142U CN 201520186594 U CN201520186594 U CN 201520186594U CN 204482142 U CN204482142 U CN 204482142U
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- repellel
- negative electrode
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Abstract
The utility model proposes a kind of electrocurtain accelerator and repellel, relate to irradiation field.Wherein electrocurtain accelerator of the present utility model comprises negative electrode and repellel, and reflection is very relative to the convex curved surface of cathode direction.Such device, repellel is except producing photoelectrons slow field, by the electronics of cathode emission towards outside the direction acceleration of grid, also produce the electric field perpendicular to repellel axis and cathode connection direction, electronics can be drifted about after certain distance on the direction being parallel to grid and reach grid again, thus reach the object of the overlay area increasing single filament cathode electron emission, reduce the number of negative electrode in electrocurtain accelerator.
Description
Technical field
The utility model relates to irradiation field, particularly a kind of electrocurtain accelerator, repellel.
Background technology
Electrocurtain accelerator is a kind of high-pressure type accelerator, does not have accelerating tube and scanning means, has that volume is little, neat appearance and a simple feature of structure.Being widely used of electrocurtain accelerator, is mainly used in desalinization, functional membrane preparation, the high-end product coating solidification such as building and ornament materials and audiotape, gas cleaning, and waste water treatment, thin type rubber and latex rubber radiation vulanization and medical material such as to prepare at the field.
The main body of current electrocurtain accelerator is stainless steel column type cylinder, and as vacuum chamber, its structure as shown in Figure 1.There is filament in the middle of vacuum chamber, be in negative high voltage state, exhale electronics.Electronics is accelerated by high pressure, forms electron curtain.Have titanium window on the downside of vacuum chamber, high energy electron line is mapped to by shining on material through titanium window.In the cross section of Fig. 1,1 is repellel, and 2 is negative electrode, and 3 is grid, and negative electrode is between repellel and grid, and grid 3 has the positive potential relative to negative electrode 2.Repellel 1, also known as suspension pole, is the negative potential electrode formed by the electronics of reception negative electrode 2 filament emission.Be photoelectrons slow field near repellel 1, negative electrode 2 launched and accelerates towards the direction of grid 3 after the photoelectrons slow of repellel motion, namely increase the utilance of negative electrode 2 electron emission.4 is anode, produces Accelerating electron field between grid 3 and anode 4, accelerates the motion of electronics anode.5 is titanium window, and the electronics arriving anode 4 launches electrocurtain accelerator through titanium window 5.
Wherein, the shape of repellel 1 as shown in figures 2 and 3.In Fig. 2 and Fig. 3,2 is negative electrode, and produce electronics, in Fig. 2,21 is arcs of recesses repellel, and such structure reduces the thermal radiation loss of negative electrode, reduce the heating power of filament, but its cathode electronics utilization ratio is low.In Fig. 3,31 is flat reflective pole, and it can push most of electronics of cathode emission to grid.
Utility model content
An object of the present utility model is to propose a kind of repellel structure improving cathode electronics overlay area.
According to an aspect of the present utility model, propose a kind of electrocurtain accelerator, comprise negative electrode and repellel, reflection is very relative to the convex curved surface of cathode direction.
Further, also comprise: grid, be positioned at the direction of electronics motion after repellel accelerates, and perpendicular to the line of repellel central shaft and negative electrode; Titanium window, is positioned at the side of grid away from negative electrode, and is parallel to grid.
Further, reflect very tantalum material to make.
Further, very cylindrical shape is reflected.
Further, repellel radius is 5 ~ 10 times of cathode filament radius.
Further, the cross section of repellel is circle, semicircle, ellipse, half elliptic, major arc or minor arc.
Further, the cross section curvature of repellel obtains according to the diameter of negative electrode, negative electrode and gate pitch, negative electrode and repellel spacing and/or neighboring reflection die opening.
Further, repellel length and cathode filament similar length.
Further, repellel length is 8 ~ 15cm.
Such device, repellel is except producing photoelectrons slow field, outside accelerating towards the direction of grid after the photoelectrons slow that cathode emission is moved towards repellel, also produce the electric field perpendicular to repellel axis and cathode connection direction, electronics can be drifted about after certain distance on the direction being parallel to grid and reach grid again.Thus reach the object of the overlay area increasing single cathode filament electron emission, the number of negative electrode in electrocurtain accelerator can be reduced.
According to another aspect of the present utility model, propose a kind of repellel, for electrocurtain accelerator, reflection is very relative to the convex curved surface of the cathode direction in electrocurtain accelerator.
Such repellel can make the electronics of cathode emission perpendicular to certain distance that repellel axis and cathode connection direction drift about, thus increases the overlay area of single filament cathode electron emission, reduces the number of negative electrode in electrocurtain accelerator.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic perspective view of a kind of electrocurtain accelerator structure in prior art.
Fig. 2 is the partial schematic diagram of a kind of electrocurtain accelerator in prior art.
Fig. 3 is the partial schematic diagram of another kind of electrocurtain accelerator in prior art.
Fig. 4 is the schematic diagram of first embodiment of electrocurtain accelerator of the present utility model.
Fig. 5 is the operation principle schematic diagram of electrocurtain accelerator of the present utility model.
Fig. 6 is the schematic diagram of second embodiment of electrocurtain accelerator of the present utility model.
Fig. 7 is the schematic diagram of the 3rd embodiment of electrocurtain accelerator of the present utility model.
Fig. 8 is the schematic diagram of the 4th embodiment of electrocurtain accelerator of the present utility model.
Fig. 9 is the schematic diagram of the 5th embodiment of electrocurtain accelerator of the present utility model.
Figure 10 is the schematic diagram of the 6th embodiment of electrocurtain accelerator of the present utility model.
Embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
The schematic diagram of an embodiment of electrocurtain accelerator of the present utility model as shown in Figure 4, Fig. 4 is the cross section of electrocurtain accelerator, wherein 2 is negative electrode, negative electrode 2 can be negative high voltage filament, for dispersing electronics, 41 is repellel, and repellel 41 is the curved surfaces to cathode direction projection, produce photoelectrons slow field, repulsive interaction is risen to electronics.
Be the electric field component that the electric field of the repellel 41 of convex has downward and horizontal both direction to cathode direction in Fig. 4, to the effect that electronics has downwards and accelerates to level.Such repellel is except producing photoelectrons slow field, outside accelerating towards the direction of grid after the photoelectrons slow that cathode emission is moved towards repellel, also produce the electric field perpendicular to repellel axis and cathode connection direction, electronics can be drifted about after certain distance in the horizontal direction and reach grid again, thus reach the object of the overlay area increasing single filament cathode electron emission, the number of negative electrode in electrocurtain accelerator can be reduced.
Electrocurtain accelerator, except repellel and negative electrode, also has grid and titanium window, and as shown in fig. 1, grid 3 can have the positive potential relative to negative electrode, is attracted to greatest extent by the electronics of cathode emission, and grid 3 plays the effect of uniform electronic.Can the electric current of control cathode 2 electron emission by the voltage adjusting grid 3.Titanium window 5 is positioned at the side of grid away from negative electrode, and and is parallel to grid.Between titanium window 5 and grid 3, there is high voltage electric field, electronics after grid 3 under the effect of high voltage electric field to titanium window 5 accelerated motion.By such device, electronics sends from negative electrode, through accelerating and diffusion, launching, realize electron accelerator function from titanium window.
Fig. 5 is the schematic diagram of the operation principle of electrocurtain accelerator.51 is camber reflection pole, very routine with cylindrical shape camber reflection in figure.2 is negative electrode, and 301 is first grid (control gate), and 302 is second grid (dhield grid), and 5 is titanium window.Negative electrode 2 one way or another electron emission, the movement locus of electronics as indicated with 6.Towards grid motion electronics under the repulsive interaction of repellel 1 and the sucking action of grid, to the direction accelerated motion of grid 301,302, towards repellel launch electronics slow down under the repulsive interaction of repellel 1, subsequently towards the direction accelerated motion of grid.Because the camber reflection pole 1 outstanding towards negative electrode 2 has perpendicular to grid and the electric field component of both direction being parallel to grid, therefore, electronics can move in the direction being parallel to grid after certain distance and arrive grid again, thus effectively increases the area coverage of the electronics of single cathode emission.In electrocurtain accelerator, often adopt the mode that multiple cathode parallel is arranged, namely multiple cathode filament is parallel to grid distribution, by increasing the area coverage of the electronics of single cathode emission, the distance between negative electrode can be increased, thus reduce the demand of cathode filament.
In one embodiment, reflect very tantalum material to make.Such materials conductive performance is good, and plasticity is strong, and fusing point is high, is beneficial to production application.
The schematic diagram of an embodiment of electrocurtain accelerator of the present utility model as shown in Figure 6.61 is repellel, and repellel 61 is cylindrical shape.Columnar repellel processing, location simply, and are beneficial to fixing, can be fixed, thus be conducive to production application by the mode of fixing hole reserved on cylinder axis.
In one embodiment, the cross section radius of repellel obtains according to the diameter of negative electrode, negative electrode and gate pitch, negative electrode and repellel spacing and/or neighboring reflection die opening, and such device can optimize the overlay area of electronics and the degree of acceleration.In one embodiment, the cross section radius of cylinder can be adjusted by the mode of analogue simulation, make electronics overlay area reach best.
In one embodiment, the radius of repellel is 5 ~ 10 times of filament radius.Such structure can ensure the demand that the direction of an electric field of repellel meets electronics and moves upward in the side being parallel to grid.
Repellel, except the cylindrical shape shown in Fig. 6, can also be other curve form.Fig. 4 and Fig. 6 to Figure 10 is repellel and the cross section schematic diagram of negative electrode in several embodiments of electrocurtain accelerator.
In Fig. 4, the cross section of repellel 41 is ellipse arc, and this ellipse arc can be major arc, minor arc, semiellipse arc.Such arc can produce perpendicular to grid and the electric field component being parallel to grid both direction, thus while electronics can be made to accelerate to grid direction, to the direction diffusion being parallel to grid.
In Fig. 7, the cross section of repellel 71 is oval.The repellel structure of elliptical cylinder-shape can by regulating the ratio of major axis and minor axis, and adjustment field parallel is in the intensity of the component of grid, thus the diffusion of adjustment electronics.
In Fig. 8, the cross section of repellel 81 is semi arch, and in Fig. 9, the cross section of repellel 91 is excellent circular arc, and in Figure 10, the cross section of repellel 101 is bad circular arc.Such repellel structure all can produce perpendicular to grid and the electric field component being parallel to grid both direction, thus while electronics can be made to accelerate to grid direction, to the direction diffusion being parallel to grid.
In one embodiment, the curvature of camber reflection pole obtains according to the diameter of negative electrode, negative electrode and gate pitch, negative electrode and repellel spacing and/or neighboring reflection die opening, and such device can optimize the overlay area of electronics and the degree of acceleration.In one embodiment, the curvature of curved surface can be adjusted by the mode of analogue simulation, make electronics overlay area reach best.
In one embodiment, the length of repellel and the similar length of cathode filament, such structure can ensure the high usage of cathode electronics and repellel.
In one embodiment, the length of repellel is 8 ~ 15 centimetres, and such length while guarantee electrocurtain accelerator effect, by the weight of equipment, size Control in preset range, can facilitate the use of electrocurtain accelerator.
The schematic diagram of several embodiments of repellel of the present utility model is as shown in Fig. 4 and Fig. 6 to Figure 10, cathode construction is coordinated to use, such repellel can make the electronics of cathode emission perpendicular to certain distance that repellel axis and cathode connection direction drift about, thus increase the overlay area of single filament cathode electron emission, the number of negative electrode in electrocurtain accelerator can be reduced.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (10)
1. an electrocurtain accelerator, comprises negative electrode and repellel, it is characterized in that: described reflection is very relative to the convex curved surface of cathode direction.
2. electrocurtain accelerator according to claim 1, is characterized in that, also comprises:
Grid, is positioned at the direction of described electronics motion after described repellel accelerates, and perpendicular to the line of described repellel central shaft and described negative electrode;
Titanium window, is positioned at the side of described grid away from described negative electrode, and is parallel to described grid.
3. electrocurtain accelerator according to claim 1, is characterized in that, described reflection very tantalum material is made.
4. electrocurtain accelerator according to claim 1, is characterized in that, described reflection very cylindrical shape.
5. electrocurtain accelerator according to claim 4, is characterized in that, described repellel radius is 5 ~ 10 times of described cathode filament radius.
6. electrocurtain accelerator according to claim 1, is characterized in that, the cross section of described repellel is circle, semicircle, ellipse, half elliptic, major arc or minor arc.
7. according to the arbitrary described electrocurtain accelerator of claim 1 ~ 6, it is characterized in that, the cross section curvature of described repellel obtains according to the diameter of described negative electrode, described negative electrode and described gate pitch, described negative electrode and described repellel spacing and/or neighboring reflection die opening.
8., according to the arbitrary described electrocurtain accelerator of claim 1 ~ 6, it is characterized in that, described repellel length and described cathode filament similar length.
9., according to the arbitrary described electrocurtain accelerator of claim 1 ~ 6, it is characterized in that, described repellel length is 8 ~ 15cm.
10. a repellel, for electrocurtain accelerator, is characterized in that, described reflection is very relative to the convex curved surface of the cathode direction in described electrocurtain accelerator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520186594.XU CN204482142U (en) | 2015-03-30 | 2015-03-30 | Electrocurtain accelerator and repellel |
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| CN201520186594.XU CN204482142U (en) | 2015-03-30 | 2015-03-30 | Electrocurtain accelerator and repellel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735898A (en) * | 2015-03-30 | 2015-06-24 | 同方威视技术股份有限公司 | Electron curtain accelerator, reflection electrode and electron acceleration method |
| CN113571393A (en) * | 2021-06-04 | 2021-10-29 | 宁波中物光电杀菌技术有限公司 | Electron beam-out device for electron gun |
-
2015
- 2015-03-30 CN CN201520186594.XU patent/CN204482142U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735898A (en) * | 2015-03-30 | 2015-06-24 | 同方威视技术股份有限公司 | Electron curtain accelerator, reflection electrode and electron acceleration method |
| CN113571393A (en) * | 2021-06-04 | 2021-10-29 | 宁波中物光电杀菌技术有限公司 | Electron beam-out device for electron gun |
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