CN206921782U - The spherical lower heat shielding of velocity modulation tube electron gun - Google Patents
The spherical lower heat shielding of velocity modulation tube electron gun Download PDFInfo
- Publication number
- CN206921782U CN206921782U CN201720682972.2U CN201720682972U CN206921782U CN 206921782 U CN206921782 U CN 206921782U CN 201720682972 U CN201720682972 U CN 201720682972U CN 206921782 U CN206921782 U CN 206921782U
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- Prior art keywords
- reversely
- cylinder
- hollow circuit
- heat shielding
- reverse
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- 230000007704 transition Effects 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 229910001257 Nb alloy Inorganic materials 0.000 description 2
- WMTSAHAFZXEJBV-UHFFFAOYSA-N [Ba].[W] Chemical compound [Ba].[W] WMTSAHAFZXEJBV-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- RHDUVDHGVHBHCL-UHFFFAOYSA-N niobium tantalum Chemical compound [Nb].[Ta] RHDUVDHGVHBHCL-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 230000018199 S phase Effects 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
The utility model discloses a kind of spherical lower heat shielding of velocity modulation tube electron gun, including part and the part of reversely extending of forward extending, the part of forward extending includes forward hollow circuit cylinder cylinder and is connected to the forward base element of the forward hollow circuit cylinder cylinder end face, and the forward base element includes forward spherical part and several forward teeth；The part of reversely extending includes reverse hollow circuit cylinder cylinder and is connected to the reverse top piece of the reversely hollow circuit cylinder cylinder end face, and the reversely top piece includes reverse spherical part and several reverse teeth；The spherical lower heat shielding of velocity modulation tube electron gun of the present utility model is the lower heat shielding of sectional forming, repeatedly complicated stamping drawdown method need not be used during processing, save and cover mould of extending more, only need simple extend mould and spot welding mould, scrapping for part will not be caused in process, and the heat shielding effects of heat shielding can be improved when being used as heat shielding.
Description
Technical field
It the utility model is related to high-power klystron technical field, and in particular to a kind of spherical lower heat of velocity modulation tube electron gun
Screen.
Background technology
Electron gun is the key component of klystron, because velocity modulation tube cathode operating temperature is higher, for ordinary oxide
Negative electrode is at 850 DEG C, and barium-tungsten dispense cathode operating temperature is at 1050 DEG C；In addition, cathode activation temperature requirement is higher, oxide-coated cathode is
1050 DEG C, and barium-tungsten dispense cathode is up to 1250 DEG C.The shell of klystron is probably at 100 DEG C or so, and therefore, the insulation of electron gun just shows
Obtain increasingly important.
The insulation of material, material specification and design shape to electron gun used in parts of electronic gun is crucial factor.
Part material used in electron gun, typically requires high temperature resistant, and conventional material is tungsten, molybdenum and its alloy, tantalum, tantalum-niobium alloy,
Stainless steel etc..And molybdenum or molybdenum alloy are typically all used against cathode portion, in order to reduce heat transfer, material requirements is very thin, typically
In 0.05~0.20mm.In the design close to cathode portion, in addition to emission of cathode face, it is required for heating to shield, i.e., along negative electrode
The face of cylinder is equipped with side heat shielding, and lower heat shielding is housed in bottom.
In order to reduce heat radiation and heat transfer, typically there are multilayer side heat shielding and lower heat shielding.Side heat shielding part shape is main
Exactly to be extended part using cylinder-shaped thin wall, lower heat shielding shape mainly uses the hemispherical or planar structure similar to heater bottom surface,
Lower heat shielding typically by heat shielding the belt of spot welding be fixed on lateral support cylinder, and the material of heat shielding is using molybdenum ribbon, no
Become rusty steel band, tantalum-niobium alloy band etc..
Heat shielding part is mainly processed using stamping drawdown method under conventional electron gun.Metal parts is extended, especially
It is the stamping drawdown for Mo, because material ductility itself is poor, material is again thin, is easily broken off damaging during extending
It is bad, cause part yields poor, high processing costs, and also even if manufacturing, the size of part also is difficult to ensure.This main table
Now, part has horn mouth, i.e. concentric reducer；Different-diameter part transition position easily produce fold, part thickness it is inconsistent, zero
Part Local Cracking etc..Even so, generally require to take ancillary method, advance one piece of thin-walled of spot welding such as on material to be processed
Metal, and the time length of mould testing, die trial cost is high, therefore whole part manufacturing cost is high, trial-production cycle length.
The content of the invention
A kind of deficiency of the purpose of this utility model aiming at above-mentioned technology, there is provided the velocity modulation tube electron gun of sectional forming
Spherical lower heat shielding, the heat shielding effects of heat shielding can also be improved when being used as heat shielding.
To achieve the above object, the spherical lower heat shielding of velocity modulation tube electron gun designed by the utility model, including forward draw
Stretch part and part of reversely extending, the part of forward extending include forward hollow circuit cylinder cylinder and be connected to the forward hollow circle
The forward base element of column casing end face, the forward base element include the forward ball of opening forward hollow circuit cylinder cylinder described in
Crown part and several be distributed uniformly and circumferentially by forward transition arc at the forward spherical part edge
Forward tooth, and forward the outer peripheral edge of tooth and the forward hollow circuit cylinder cylinder fits described in several；
The part of reversely extending includes reverse hollow circuit cylinder cylinder and is connected to the anti-of the reversely hollow circuit cylinder cylinder end face
To top piece, if the reversely top piece include opening backwards to the reversely reverse spherical part of hollow circuit cylinder cylinder and
Dry is distributed uniformly and circumferentially the reverse tooth at the reversely spherical part edge by reverse transition circular arc, and some
The outer peripheral edge of the individual reversely tooth and the reversely hollow circuit cylinder cylinder fits；
Wherein, the internal diameter of the forward hollow circuit cylinder cylinder is identical with the internal diameter of the reversely hollow circuit cylinder cylinder.
Further, forward the axisymmetrical of tooth and the forward hollow circuit cylinder cylinder is distributed described in several.
Further, the axisymmetrical of several reversely teeth and the reversely hollow circuit cylinder cylinder is distributed.
Further, the thickness of the forward hollow circuit cylinder cylinder, the thickness of the forward spherical part, the forward tooth
Thickness and the forward transition arc thickness all same.
Further, the reversely thickness of hollow circuit cylinder cylinder, thickness, the reverse tooth of the reversely spherical part
Thickness and the reverse transition circular arc thickness all same.
Compared with prior art, the utility model has advantages below：Velocity modulation tube electron gun of the present utility model is spherical
Lower heat shielding is the lower heat shielding of sectional forming, and repeatedly complicated stamping drawdown method need not be used during processing, saves more sets and extends
Mould, it is only necessary to simple extend mould and spot welding mould, scrapping for part will not be caused in process；It is more to avoid thin-walled parts
Secondary stamping drawdown, the difficulty of processing of parts of electronic gun is significantly reduced, shorten the trial-production cycle, reduce manufacturing cost, and
Improve the yield rate of part.
Brief description of the drawings
Fig. 1 is the design of part schematic diagram of forward extending of the spherical lower heat shielding of the utility model velocity modulation tube electron gun；
Fig. 2 is the design of part schematic diagram of reversely extending of the spherical lower heat shielding of the utility model velocity modulation tube electron gun.
Each part numbers are as follows in figure：
Forward extend part 10, forward hollow circuit cylinder cylinder 11, forward base element 12, forward tooth 13, forward transition arc
14th, forward spherical part 15；
Reverse extend part 20, reverse hollow circuit cylinder cylinder 21, reverse base element 22, reverse tooth 23, reverse transition circular arc
24th, reverse spherical part 25.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The spherical lower heat shielding of velocity modulation tube electron gun of the present utility model, including forward extend and part 10 and reversely extend zero
Part 20.As shown in figure 1, part 10 of forward extending includes forward hollow circuit cylinder cylinder 11 and is connected to the forward end face of hollow circuit cylinder cylinder 11
Forward base element 12, forward base element 12 include forward spherical part 15 of the opening towards forward hollow circuit cylinder cylinder 11
And several are distributed uniformly and circumferentially in forward tooth 13 at the forward spherical edge of part 15 by forward transition arc 14,
Wherein, several forward fit outer peripheral edge of the tooth 13 all with forward hollow circuit cylinder cylinder 11, and all forward teeth 13 with forward
The axisymmetrical of hollow circuit cylinder cylinder 11 is distributed, and forward the number of tooth 13 is 6~16, preferably 8 in the present embodiment；
As shown in Fig. 2 part 20 of reversely extending includes reverse hollow circuit cylinder cylinder 21 and is connected to reverse hollow circuit cylinder cylinder 21
The reverse top piece 22 of end face, reverse top piece 22 include opening backwards to reverse spherical the zero of reverse hollow circuit cylinder cylinder 21
Part 25 and several be distributed uniformly and circumferentially by reverse transition circular arc 24 in the reverse of the reverse spherical edge of part 25
Tooth 23, wherein, several outer peripheral edges of reverse tooth 23 all with reverse hollow circuit cylinder cylinder 21 fit, and it is all reversely tooth 23 with
The axisymmetrical of reverse hollow circuit cylinder cylinder 21 is distributed, and reversely the number of tooth 23 is 6~16, preferably 8 in the present embodiment；
In addition, forward the internal diameter of hollow circuit cylinder cylinder 11 is identical with the internal diameter of reverse hollow circuit cylinder cylinder 21, forward hollow circuit cylinder
The thickness of cylinder 11, the forward thickness of spherical part 15, the forward thickness of tooth 13 and forward thickness three's phase of transition arc 14
Together, the thickness of reverse hollow circuit cylinder cylinder 21, the reversely thickness of spherical part 25, the thickness of reverse tooth 23 and reverse transition circular arc
24 thickness also all same, the also, forward thickness of hollow circuit cylinder cylinder 11 can be identical with the thickness of reverse hollow circuit cylinder cylinder 21
Also can be different, selected according to being actually needed.
In summary, the spherical lower heat shielding of velocity modulation tube electron gun of the present utility model is the lower heat shielding of sectional forming, is processed
When need not use repeatedly complicated stamping drawdown method, save more sets and extend mould, it is only necessary to simple extend mould and spot welding mould,
Scrapping for part will not be caused in process；Avoid thin-walled parts Multi-step forming to extend, significantly reduce electron gun
The difficulty of processing of part, shorten the trial-production cycle, reduce manufacturing cost, and improve the yield rate of part.
Claims (5)
1. a kind of spherical lower heat shielding of velocity modulation tube electron gun, including forward extend part and part of reversely extending, it is characterised in that：
The part of forward extending includes forward hollow circuit cylinder cylinder and is connected to forward bottom zero of the forward hollow circuit cylinder cylinder end face
Part, the forward base element include opening towards described in forward the forward spherical part of hollow circuit cylinder cylinder and several pass through
Forward transition arc is distributed uniformly and circumferentially the forward tooth at the forward spherical part edge, and several are described suitable
Fitted to the outer peripheral edge of tooth and the forward hollow circuit cylinder cylinder；
The part of reversely extending includes reverse hollow circuit cylinder cylinder and is connected to the reverse top of the reversely hollow circuit cylinder cylinder end face
Portion's part, the reversely top piece include opening backwards to the reversely reverse spherical part of hollow circuit cylinder cylinder and several
Reverse tooth at the reversely spherical part edge, and several institutes are distributed uniformly and circumferentially by reverse transition circular arc
The outer peripheral edge for stating reverse tooth and the reversely hollow circuit cylinder cylinder fits；
Wherein, the internal diameter of the forward hollow circuit cylinder cylinder is identical with the internal diameter of the reversely hollow circuit cylinder cylinder.
2. the spherical lower heat shielding of velocity modulation tube electron gun according to claim 1, it is characterised in that：Described in several forward tooth with
The axisymmetrical distribution of the forward hollow circuit cylinder cylinder.
3. the spherical lower heat shielding of velocity modulation tube electron gun according to claim 1, it is characterised in that：Several it is described reversely teeth with
The axisymmetrical distribution of the reversely hollow circuit cylinder cylinder.
4. according to the spherical lower heat shielding of the velocity modulation tube electron gun of claim 1 or 2 or 3, it is characterised in that：It is described forward hollow
The thickness of cylindrical drum, the thickness of the forward spherical part, the thickness of the thickness of the forward tooth and the forward transition arc
Spend all same.
5. according to the spherical lower heat shielding of the velocity modulation tube electron gun of claim 1 or 2 or 3, it is characterised in that：It is described reversely hollow
The thickness of cylindrical drum, the reversely thickness of spherical part, the reversely thickness of tooth and the thickness of the reverse transition circular arc
Spend all same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720682972.2U CN206921782U (en) | 2017-06-13 | 2017-06-13 | The spherical lower heat shielding of velocity modulation tube electron gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720682972.2U CN206921782U (en) | 2017-06-13 | 2017-06-13 | The spherical lower heat shielding of velocity modulation tube electron gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206921782U true CN206921782U (en) | 2018-01-23 |
Family
ID=61315246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720682972.2U Expired - Fee Related CN206921782U (en) | 2017-06-13 | 2017-06-13 | The spherical lower heat shielding of velocity modulation tube electron gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206921782U (en) |
-
2017
- 2017-06-13 CN CN201720682972.2U patent/CN206921782U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 |