CN209418459U - Ion averager electron source - Google Patents
Ion averager electron source Download PDFInfo
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- CN209418459U CN209418459U CN201821695272.8U CN201821695272U CN209418459U CN 209418459 U CN209418459 U CN 209418459U CN 201821695272 U CN201821695272 U CN 201821695272U CN 209418459 U CN209418459 U CN 209418459U
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- anode
- insulating ceramics
- ion
- electron source
- hollow cathode
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Abstract
The utility model discloses a kind of ion averager electron sources, it include: hollow cathode, anode, anode pedestal and the anode-supported cylinder successively welded together from top to bottom, the first insulating ceramics, cathode support cylinder, the second insulating ceramics, heated filament lead wire and fixinig plate, hollow cathode is fixed on cathode support cylinder, anode is fixed on anode-supported cylinder by anode pedestal, and anode is located at the surface of hollow cathode, and the bottom of fixinig plate is additionally provided with capping；The first protection screen is provided on the outside of first insulating ceramics, the second insulating ceramics is provided with the second protection screen, heated filament lead wire is provided between the first insulating ceramics and the second insulating ceramics.The ion averager electron source overcomes ion engine sustained firing in the prior art to go out positive ion beam, electronics with negative electrical charge can be left in them, it seriously hinders cation to continue to be discharged, or even the cation of discharge can be attracted again back, ion engine will be unable to the problem of working normally.
Description
Technical field
The utility model relates to vacuum electron device fields, and in particular, to a kind of ion averager electron source.
Background technique
After Deep Space 1 in 1998 launches, space travel enters the new era of ion propulsion.Ion engine
The most important condition of operating is exactly to manufacture ionized gas.The electron beam that sleeve cathode issues is launched into through magnetized ionisation chamber, and fills
Gas atom collision in room, makes atom be ionized into monovalence cation.It, can be by ion acceleration and from tail portion by accelerating field
Discharge forms ion beam, thus generates thrust.
But ion engine sustained firing goes out positive ion beam, can be left in them the electronics with negative electrical charge, this is just formed
Powerful negative electric field in engine seriously hinders cation and continues to be discharged, if electron accumulation is enough, or even can will arrange
Cation out attracts back again, and ion engine will be unable to work normally.
Therefore it provides a kind of can both neutralize ion beam in use, the ion that engine excessively charges is in turn avoided
Averager electron source is the utility model urgent need to resolve problem.
Utility model content
In view of the above technical problems, the purpose of the utility model is to overcome ion engine sustained firings in the prior art to go out
Electronics with negative electrical charge can be left in them by positive ion beam, and which forms negative electric fields powerful in engine, seriously hinder
Cation continues to be discharged, and if electron accumulation is enough, or even can attract again the cation of discharge back, and ion engine will
It is excessive in turn avoid engine so that ion beam can both be neutralized in use by providing one kind for the problem of can not work normally
The ion averager electron source of electrification.
To achieve the goals above, the utility model provides a kind of ion averager electron source, the ion averager
Electron source include: hollow cathode, anode, anode pedestal and the anode-supported cylinder successively welded together from top to bottom, first absolutely
Edge ceramics, cathode support cylinder, the second insulating ceramics, heated filament lead wire and fixinig plate, the hollow cathode are fixed on the yin
On the support tube of pole, the anode is fixed on the anode-supported cylinder by the anode pedestal, and the anode is positioned at described
The surface of hollow cathode, and the bottom of the fixinig plate is additionally provided with capping；It is provided on the outside of first insulating ceramics
First protection screen, second insulating ceramics are provided with the second protection screen, and first insulating ceramics and second insulation are made pottery
Heated filament lead wire is provided between porcelain.
Preferably, the diameter of the surface of emission of the hollow cathode is 6mm-8mm；The hollow diameters of the hollow cathode are
1mm-3mm。
Preferably, the diameter of the surface of emission of the hollow cathode is 7mm；The hollow diameters of the hollow cathode are 2mm.
Preferably, the distance between the hollow cathode and the anode are 0.4mm-0.6mm.
Preferably, fixation hole is additionally provided on the fixinig plate, the aperture of the fixation hole is 3mm-4mm.
It preferably, is laser welding between the anode and the anode pedestal；The hollow cathode and the cathode branch
Supportting also is laser welding between cylinder.
It preferably, is spot welding between first protection screen and first insulating ceramics；Second protection screen with
It is also spot welding between second insulating ceramics.
Preferably, the capping and described state between fixinig plate are also spot welding.
According to the above technical scheme, when in use, hollow cathode can for ion averager electron source provided by the utility model
The corrosion banged to cathode emitter is returned to weaken ion, extends the service life of cathode emitter；Protection screen 1 and protection screen 2 can be every
From pollutant that may be present in ionisation chamber, it is prevented to be attached on insulating ceramics 1, caused between electron gun electrodes under insulation performance
Drop, can be applied in ion propeller.The ion averager electron source of the utility model overcomes ion in the prior art to draw
It holds up sustained firing and goes out positive ion beam, the electronics with negative electrical charge can be left in them, which forms negative electricity powerful in engine
, it seriously hinders cation and continues to be discharged, if electron accumulation is enough, or even the cation of discharge can be attracted back again
Come, ion engine will be unable to the problem of working normally.
Other feature and advantage of the utility model will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of ion averager electron source that provides in a kind of preferred embodiment of the utility model
Figure.
Description of symbols
1 hollow cathode, 2 anode
3 anode pedestal, 4 anode-supported cylinder
5 first insulating ceramics, 6 cathode support cylinder
7 second insulating ceramics, 8 heated filament lead wire
The capping of 9 fixinig plates 10
11 first protection screen, 12 second protection screen
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
In the present invention, in the absence of explanation to the contrary, the side that " upper and lower, inside and outside " etc. is included in the term
Position word only represent orientation of the term under normal service condition, or be those skilled in the art understand that be commonly called as, without that should regard
For the limitation to the term.
As shown in Figure 1, the utility model provides a kind of ion averager electron source, the ion averager electron source packet
It includes: hollow cathode 1, anode 2, anode pedestal 3 and the insulation pottery of anode-supported cylinder 4, first successively welded together from top to bottom
Porcelain 5, cathode support cylinder 6, the second insulating ceramics 7, heated filament lead wire 8 and fixinig plate 9, the hollow cathode 1 are fixed on described
On cathode support cylinder 6, the anode 2 is fixed on the anode-supported cylinder 4 by the anode pedestal 3, and 2, the anode
In the surface of the hollow cathode 1, and the bottom of the fixinig plate 9 is additionally provided with capping 10；First insulating ceramics 5
Outside is provided with the first protection screen 11, and second insulating ceramics 7 is provided with the second protection screen 12, first insulating ceramics 5
Heated filament lead wire 8 is provided between second insulating ceramics 7.
According to the above technical scheme, when in use, hollow cathode 1 can for ion averager electron source provided by the utility model
The corrosion banged to cathode emitter is returned to weaken ion, extends the service life of cathode emitter；Protection screen 111 and protection screen 212 can
Pollutant that may be present in ionisation chamber is isolated, it is prevented to be attached on insulating ceramics 15, causes to insulate between electron gun electrodes
Performance decline, can be applied in ion propeller.The ion averager electron source of the utility model overcomes in the prior art
Ion engine sustained firing goes out positive ion beam, can be left in them the electronics with negative electrical charge, which forms powerful in engine
Negative electric field, seriously hinder cation and continue to be discharged, if electron accumulation is enough, or even can by the cation of discharge again
Attraction is returned, and ion engine will be unable to the problem of working normally.
In a kind of preferred embodiment of the utility model, the diameter of the surface of emission of the hollow cathode 1 is 6mm-
8mm；The hollow diameters of the hollow cathode 1 are 1mm-3mm.
In a kind of preferred embodiment of the utility model, the diameter of the surface of emission of the hollow cathode 1 is 7mm；
The hollow diameters of the hollow cathode 1 are 2mm.
In a kind of preferred embodiment of the utility model, the distance between the hollow cathode 1 and the anode 2
For 0.4mm-0.6mm.
In a kind of preferred embodiment of the utility model, fixation hole is additionally provided on the fixinig plate 9, it is described solid
The aperture for determining hole is 3mm-4mm, and the aperture, which facilitates, is mounted on electron gun in ion propeller.
It is laser between the anode 2 and the anode pedestal 3 in a kind of preferred embodiment of the utility model
Welding；It is also laser welding between the hollow cathode 1 and the cathode support cylinder 6.
In a kind of preferred embodiment of the utility model, first protection screen 11 and first insulating ceramics
It is spot welding between 5；It is also spot welding between second protection screen 12 and second insulating ceramics 7.
It is also point between the capping 10 and the fixinig plate 9 in a kind of preferred embodiment of the utility model
Welding.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
Detail in above embodiment can be to the skill of the utility model in the range of the technology design of the utility model
Art scheme carries out a variety of simple variants, these simple variants belong to the protection scope of the utility model.
It is further to note that specific technical features described in the above specific embodiments, in not lance
It in the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the utility model is to each
No further explanation will be given for the possible combination of kind.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed
The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.
Claims (8)
1. a kind of ion averager electron source, which is characterized in that the ion averager electron source includes: hollow cathode (1), sun
Pole (2), anode pedestal (3) and the anode-supported cylinder (4) successively welded together from top to bottom, the first insulating ceramics (5), cathode
Support tube (6), the second insulating ceramics (7), heated filament lead wire (8) and fixinig plate (9), the hollow cathode (1) are fixed on institute
It states on cathode support cylinder (6), the anode (2) is fixed on the anode-supported cylinder (4) by the anode pedestal (3), and
The anode (2) is located at the surface of the hollow cathode (1), and the bottom of the fixinig plate (9) is additionally provided with capping (10)；
It is provided with the first protection screen (11) on the outside of first insulating ceramics (5), second insulating ceramics (7) is provided with the second guarantor
Shield screen (12), is provided with heated filament lead wire (8) between first insulating ceramics (5) and second insulating ceramics (7).
2. ion averager electron source according to claim 1, which is characterized in that the surface of emission of the hollow cathode (1)
Diameter be 6mm-8mm；The hollow diameters of the hollow cathode (1) are 1mm-3mm.
3. ion averager electron source according to claim 2, which is characterized in that the surface of emission of the hollow cathode (1)
Diameter be 7mm；The hollow diameters of the hollow cathode (1) are 2mm.
4. ion averager electron source according to claim 3, which is characterized in that the hollow cathode (1) and the sun
The distance between pole (2) is 0.4mm-0.6mm.
5. ion averager electron source according to claim 1, which is characterized in that be additionally provided on the fixinig plate (9)
Fixation hole, the aperture of the fixation hole are 3mm-4mm.
6. ion averager electron source according to claim 1, which is characterized in that the anode (2) and the anode bottom
It is laser welding between seat (3)；It is also laser welding between the hollow cathode (1) and the cathode support cylinder (6).
7. ion averager electron source according to claim 1, which is characterized in that first protection screen (11) and described
It is spot welding between first insulating ceramics (5)；It is also point between second protection screen (12) and second insulating ceramics (7)
Welding.
8. ion averager electron source according to claim 7, which is characterized in that the capping (10) and the fixinig plate
It (9) is also spot welding between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821695272.8U CN209418459U (en) | 2018-10-18 | 2018-10-18 | Ion averager electron source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821695272.8U CN209418459U (en) | 2018-10-18 | 2018-10-18 | Ion averager electron source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209418459U true CN209418459U (en) | 2019-09-20 |
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ID=67931648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821695272.8U Active CN209418459U (en) | 2018-10-18 | 2018-10-18 | Ion averager electron source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209418459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750252A (en) * | 2023-01-03 | 2023-03-07 | 国科大杭州高等研究院 | Working medium-free cathode and Hall thruster and space equipment comprising same |
-
2018
- 2018-10-18 CN CN201821695272.8U patent/CN209418459U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750252A (en) * | 2023-01-03 | 2023-03-07 | 国科大杭州高等研究院 | Working medium-free cathode and Hall thruster and space equipment comprising same |
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