CN209675233U - Suspension heating electronic source component - Google Patents
Suspension heating electronic source component Download PDFInfo
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- CN209675233U CN209675233U CN201920377241.6U CN201920377241U CN209675233U CN 209675233 U CN209675233 U CN 209675233U CN 201920377241 U CN201920377241 U CN 201920377241U CN 209675233 U CN209675233 U CN 209675233U
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- emitter
- heat shielding
- heater strip
- cathode tube
- suspension
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Abstract
Pole is held in suspension heating electronic source component, including cathode tube, emitter, heat shielding top, heat shielding cylinder, multilayer heat shielding, heat shielding support, suspension heater strip, heater strip support ceramics, cathode top and touching.Cathode tube extruding is mounted in heat shielding support, emitter is between cathode tube and heat shielding top, heat shielding top center is equipped with round hole, multilayer heat shielding is stacked between heat shielding cylinder and suspension heater strip, cathode tube outlet side is connect with emitter, heater strip support ceramics, which squeeze, to be mounted in cathode tube, and suspension heater strip one end is welded on heat shielding top, the other end is withstood on heater strip support ceramics.The utility model structure is simple, and process parameter control is convenient, suspension heater strip is directly suspended in outside emitter, the heat of generation directly acts on emitter surface, avoids the thermal loss in cathode tube and solder, improves heating efficiency；So that cathode top is not directly contacted with emitter, reduces cathode top temperature, effectively extend the expected service life of electronics source component.
Description
Technical field
The utility model relates to vacuum electronic field, especially a kind of suspension heating electronic source component is suitable for space
Electric thruster, ion source and electron source of other gas discharge devices etc..
Background technique
Electronics source component is travelling-wave tubes and gas discharge hollow cathode, plasma discharge device core component, transmitting
Electric current is several amperes to tens amperes, has wider working range.
The axial section of existing hollow cathode heating component is as shown in figure 8, include cathode tube 11, emitter 12, absolutely
Pole 17 is held in edge ceramic skeleton 13, heater strip 14, multilayer heat shielding 15, cathode top 16 and touching.Emitter 12 is fixedly installed in cathode tube
On 11 inner wall, insulating ceramics skeleton 13 is fixedly installed on the outer wall of cathode tube 11, and heater strip 14 is wrapped in insulating ceramics bone
The outer surface of frame 3, multilayer heat shielding 15 are set to the periphery of heater strip 14, and cathode top 16 is fixedly mounted on the end of cathode tube 11,
Touching is held pole 17 and is oppositely arranged with cathode top 16.The outer wall of cathode tube 11 and the inner wall of insulating ceramics skeleton 13 and cathode tube 11 it is interior
It is welded and fixed respectively using high-temperature solder between wall and the outer wall of emitter 12.In the course of work, 16 temperature of cathode top with
12 temperature close of emitter is passed through xenon from 11 end of cathode tube, and the temperature of emitter 12 is maintained using the bombardment of xenon ion, so that
Emitter 12 passes through the continual external launching electronics of aperture on cathode top 16.
However the heat that above-mentioned existing electronics source component heating has the following deficiencies: that (1), heater strip 14 issue passes through absolutely
Solder, cathode tube 11, cathode tube 11 and emitter 12 between edge ceramic skeleton 13, cathode tube 11 and insulating ceramics skeleton 13 it
Between solder pass to emitter 12 again, heat is big by the transmitting loss amount of multilayered structure, and cathode tube 11 is mostly metal material,
Thermal conductivity is high, and along 11 direction of cathode tube, there are a large amount of heat loss when multilayer heat shielding 15 works, so that the heating of electronics source component is imitated
Rate is difficult to be promoted.(2), the material that insulating ceramics skeleton 13 uses has toxicity, it is difficult to add for beryllium oxide in the production process
Work.(3), overall structure is multilayer, and is respectively necessary for carrying out welding or coiling, and structure process is relative complex, needs to carry out repeatedly
Sintering, parameter need strict control, and production efficiency is low.(4), the work in the case where high temperature is up to 1500~1800 DEG C for a long time of cathode tube 11
Make, 16 sputtering etching rate of cathode top is caused to increase, it is easy to oxidize to cause to fail, so that short service life.
Summary of the invention
A kind of suspension heating electronic source group is provided the purpose of the utility model is to overcome the above-mentioned insufficient of the prior art
Part directly heats emitter using suspension heater strip, solves that heating efficiency is low, and structure is complicated, and electronics source component makes
With the problem that the service life is short.
The technical solution of the utility model is: suspension heating electronic source component, including cathode tube, emitter, heat shielding top,
Pole is held in heat shielding cylinder, multilayer heat shielding, heat shielding support, suspension heater strip, heater strip support ceramics, cathode top and touching.
The center of the cathode tube is equipped with xenon through-hole, and outlet side is equipped with emitter positioning hole.
The center on the heat shielding top is equipped with round hole, and end face is equipped with suspension heater strip positioning hole and emitter is fixed
Position mounting hole, is equipped with annular convex platform on the bottom end face of emitter positioning hole.
The center of the heat shielding support is equipped with cathode tube positioning hole, and the end face of one end is positioned equipped with emitter
Mounting hole, emitter porcelain positioning hole bottom end face are equipped with the ring-shaped step hole matched with cathode tube outlet side.
Cathode tube is mounted in the cathode tube positioning hole of heat shielding support by squeezing, and heater strip support ceramics are by squeezing
Pressure is mounted on the outer wall of cathode tube outlet side emitter positioning hole.
Heat shielding top and heat shielding support are respectively and fixedly installed to the both ends of heat shielding cylinder, and emitter is mounted in heat shielding cylinder, emits
One end of body is withstood on the bottom end face in the emitter positioning hole on heat shielding top, emitter positioning hole bottom end face
On annular convex platform be embedded into the annular groove of emitter end face, the other end of emitter withstands in cathode tube emitter positioning peace
It fills on the bottom end face in hole.
Suspension heater strip is sleeved on emitter external cylindrical surface, and one end withstands on the positioning peace of the suspension heater strip on heat shielding top
It on the bottom end face for filling hole, and is connect by welding with the bottom end face of suspension heater strip positioning hole, the other end is withstood on
On annular groove bottom end face on heater strip support ceramics.
Multilayer heat shielding is stacked between the inner wall and suspension heater strip of heat shielding cylinder, and passes through suspension heater strip positioning peace
Fill the outer wall in hole and the outer wall support positioning of emitter positioning hole.
The cathode top is arranged with respect to heat shielding top, which is provided with horn-like aperture.
The setting of pole opposing cathode top is held in the touching, which is provided with circular hole.
The further technical solution of the utility model is: the heater strip support ceramics use aluminum oxide ceramic.
The utility model has a characteristic that compared with prior art
1), suspension heater strip by being directly suspended in outside emitter, removing in existing structure and adding by the utility model
The weldering between solder and cathode tube and emitter between the opposite cathode tube structure of heated filament, cathode tube and insulating ceramics skeleton
Material, under the heat-blocking action of suspension heater strip external multi-layer heat shielding, directly acts on transmitting for the heat that suspension heater strip generates
Body surface face avoids the thermal loss in cathode tube and solder, improves heating efficiency.
2), the utility model by the cathode tube structure opposite with suspension heater strip in removal existing structure, cathode tube and
The solder three-decker between solder and cathode tube and emitter between insulating ceramics skeleton, structure is relatively easy, avoids
Using multiple sintering process, production and processing efficiency is improved.
3), the utility model is held by the touching in existing structure is arranged cathode replacement for cathode top between pole and multilayer heat shielding
Cathode roof construction is integrated in cathode top center by aperture, so that cathode top is not directly contacted with emitter, so that the temperature on cathode top
About 300 ~ 400 DEG C are reduced, sputtering of materials corrosion rate is reduced, extends the service life of electronics source component.
It is further described below in conjunction with detailed construction of the drawings and specific embodiments to the utility model.
Detailed description of the invention
Fig. 1 is the axial section structural schematic diagram of the utility model suspension heating electronic source component；
Fig. 2 is the structural schematic diagram of cathode tube；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is the structural schematic diagram on heat shielding top；
Fig. 5 is the B-B cross-sectional view of Fig. 4；
Fig. 6 is the structural schematic diagram of heat shielding support；
Fig. 7 is the C-C cross-sectional view of Fig. 6；
Fig. 8 is the axial section structural schematic diagram of existing hollow cathode heating component.
Specific embodiment
Embodiment, as shown in figs. 1-7, suspension heating electronic source component, including cathode tube 1, emitter 2, heat shielding top 3,
Pole 10 is held in heat shielding cylinder 4, multilayer heat shielding 5, heat shielding support 6, suspension heater strip 7, heater strip support ceramics 8, cathode top 9 and touching.
The center of the cathode tube 1 is equipped with xenon through-hole 1-1, and outlet side is equipped with emitter positioning hole 1-2.
The center on the heat shielding top 3 be equipped with round hole 3-1, end face be equipped with suspension heater strip positioning hole 3-2 and
Emitter positioning hole 3-3 is equipped with annular convex platform 3-4 on the bottom end face of emitter positioning hole 3-3.
The center of the heat shielding support 6 is equipped with cathode tube positioning hole 6-1, and the end face of one end is equipped with emitter
Positioning hole 6-2, emitter porcelain positioning hole 6-2 bottom end face are equipped with the annular matched with 1 outlet side of cathode tube
Stepped hole 6-3.
Cathode tube 1 is mounted in the cathode tube positioning hole 6-1 of heat shielding support 6 by squeezing, heater strip support ceramics 8
It is mounted on the outer wall of 1 outlet side emitter positioning hole 1-2 of cathode tube by squeezing.
Heat shielding top 3 and heat shielding support 6 are respectively and fixedly installed to the both ends of heat shielding cylinder 4, and emitter 2 is mounted in heat shielding cylinder 4,
One end of emitter 2 is withstood on the bottom end face in the emitter positioning hole 3-3 on heat shielding top 3, emitter location and installation
Annular convex platform 3-4 on the 3-3 bottom end face of hole is embedded into the annular groove of 2 end face of emitter, and the other end of emitter 2 withstands on yin
On bottom end face in 1 emitter positioning hole 1-2 of pole pipe.
Suspension heater strip 7 is sleeved on 2 external cylindrical surface of emitter, and it is fixed that one end withstands on the suspension heater strip on heat shielding top 3
On the bottom end face of position mounting hole 3-2, and it is connect by welding with the bottom end face of suspension heater strip positioning hole 3-2,
The other end is withstood on the annular groove bottom end face on heater strip support ceramics 8.
Multilayer heat shielding 5 is stacked between the inner wall and suspension heater strip 7 of heat shielding cylinder 4, and fixed by suspension heater strip
The outer wall support positioning of the outer wall and emitter positioning hole 6-2 of position mounting hole 3-2.
The cathode top 9 is arranged with respect to heat shielding top 3, which is provided with horn-like aperture 9-1, i.e. cathode top 9 and emitter 2
Separation enables to the temperature on cathode top 9 to reduce about 300~400 DEG C in different spaces, therefore reduces 9 material of cathode top
Sputtering etching rate, effectively improve the service life of electronics source component.In addition, the electronics that emitter 2 issues passes through cathode top 9
On horn-like aperture 9-1 project, the horn-like aperture 9-1 have the function of current limliting and extraction electronics.
The setting of 10 opposing cathode top 9 of pole is held in the touching, which is provided with circular hole 10-1.
At the initial stage of ignition applies high-voltage pulse between cathode top 9 and emitter 2, provides for the igniting of electronics source component initial
Energy；In the course of work, xenon (Xe) gas passes through the inlet end of cathode tube 1, out of, outlet side enters emitter 2 cavity, hangs
The floating radiation of heater strip 7 fever directly acts on emitter 2, and the electronics that emitter 2 issues passes through the round hole 3- on heat shielding top 3
1, the circular hole 10-1 that the horn-like aperture 9-1 on cathode top 9 and touching are held on pole 10 is emitted.
Since suspension heater strip 7 and emitter 2 are directly opposite, centre is without other media, thus heat can be acted on directly
In emitter 2, heating efficiency is high；In addition, the heat that suspension heater strip 7 issues is concentrated on heat shielding top 3, heat shielding cylinder by multilayer heat shielding
4, in the region that heat shielding support 6 is formed with reflector 2, reduce distributing for heat, further improve heating efficiency.
Claims (2)
1. suspension heating electronic source component, it is characterized in that: suspension heating electronic source component, including cathode tube, emitter, heat
Pole is held in screen top, the support of heat shielding cylinder, multilayer heat shielding, heat shielding, suspension heater strip, heater strip support ceramics, cathode top and touching；
The center of the cathode tube is equipped with xenon through-hole, and outlet side is equipped with emitter positioning hole；
The center on the heat shielding top is equipped with round hole, and end face is equipped with suspension heater strip positioning hole and emitter positioning peace
Hole is filled, annular convex platform is equipped on the bottom end face of emitter positioning hole；
The center of the heat shielding support is equipped with cathode tube positioning hole, and the end face of one end is equipped with emitter location and installation
Hole, emitter porcelain positioning hole bottom end face are equipped with the ring-shaped step hole matched with cathode tube outlet side；
Cathode tube is mounted in the cathode tube positioning hole of heat shielding support by squeezing, and heater strip support ceramics are by squeezing peace
On the outer wall of cathode tube outlet side emitter positioning hole；
Heat shielding top and heat shielding support are respectively and fixedly installed to the both ends of heat shielding cylinder, and emitter is mounted in heat shielding cylinder, emitter
One end is withstood on the bottom end face in the emitter positioning hole on heat shielding top, on emitter positioning hole bottom end face
Annular convex platform is embedded into the annular groove of emitter end face, and the other end of emitter withstands on emitter positioning hole in cathode tube
On interior bottom end face；
Suspension heater strip is sleeved on emitter external cylindrical surface, and one end withstands on the suspension heater strip positioning hole on heat shielding top
Bottom end face on, and by welding connect with the bottom end face of suspension heater strip positioning hole, the other end withstands on heating
On annular groove bottom end face on silk support ceramics；
Multilayer heat shielding is stacked between the inner wall and suspension heater strip of heat shielding cylinder, and passes through suspension heater strip positioning hole
Outer wall and emitter positioning hole outer wall support positioning；
The cathode top is arranged with respect to heat shielding top, which is provided with horn-like aperture；
The setting of pole opposing cathode top is held in the touching, which is provided with circular hole.
2. suspension heating electronic source component as described in claim 1, it is characterized in that: the heater strip support ceramics use
Aluminum oxide ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920377241.6U CN209675233U (en) | 2019-03-25 | 2019-03-25 | Suspension heating electronic source component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920377241.6U CN209675233U (en) | 2019-03-25 | 2019-03-25 | Suspension heating electronic source component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209675233U true CN209675233U (en) | 2019-11-22 |
Family
ID=68572522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920377241.6U Active CN209675233U (en) | 2019-03-25 | 2019-03-25 | Suspension heating electronic source component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209675233U (en) |
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2019
- 2019-03-25 CN CN201920377241.6U patent/CN209675233U/en active Active
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