CN202940210U - Heat shield with multi-slot structure - Google Patents
Heat shield with multi-slot structure Download PDFInfo
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- CN202940210U CN202940210U CN 201220468315 CN201220468315U CN202940210U CN 202940210 U CN202940210 U CN 202940210U CN 201220468315 CN201220468315 CN 201220468315 CN 201220468315 U CN201220468315 U CN 201220468315U CN 202940210 U CN202940210 U CN 202940210U
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- torus
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Abstract
The utility model relates to a heat shield with a multi-slot structure, which comprises a first circular ring body, a cone-shaped body and a second circular ring body, wherein the diameter of the first circular ring body is greater than that of the second circular ring body, the lower end of the cone-shaped body is connected with the first circular ring body, the upper end of the cone-shaped body is connected with the second circular ring body, the periphery of the outer wall of the first circular ring body is provided with multiple layers of horizontal slots uniformly, and the end part of the second circular ring body is provided with vertical slots uniformly. The heat shield with the multi-slot structure provided by the utility model has good heat insulation effect, the time is shortened by 0.5 minute when the temperature of a negative electrode reaches 1050 DEG C under the same filament power consumption, and the heat shield is assembled and welded with the negative electrode easily.
Description
Technical field
The utility model relates to a kind of microwave electron tube field of belonging to, especially a kind of multi-groove structure formula heat shielding.
Background technology
Travelling wave tube is the microwave vacuum electronic device, utilizes electromagnetic field to control electron beam section's motion within it, makes electron beam produce, accelerate, move, so that reach the purpose that signal amplifies.Wherein negative electrode produces electron beam, forms certain cross sectional shape, size, and radio frequency system completes the exchange of energy, causes signal to be amplified.The negative electrode that produces electron beam is often hot cathode, and material is generally tungsten, and need to be heated to certain temperature could electron emission.The electron beam current value that travelling wave tube uses is large, and the target emissivities are had relatively high expectations, and needs anticathode working temperature that certain control is arranged, and can work greater than certain temperature.
Electron gun generally is comprised of electrodes such as negative electrode, anode and focusing electrodes, and these electrodes are fixed in the electron gun shell.Negative electrode working temperature General Requirements generally adopts filamentray structure to heat to negative electrode higher than 1050 ℃.Metallic support is adopted in connection between negative electrode and shell, can the energy of filament heating be dissipated, like this for make negative electrode obtain required working temperature can cause filament to add heat power consumption excessive, therefore need to be incubated in negative electrode periphery design heat shielding, reduce the power consumption of filament.Heat shielding mainly plays insulation effect, generally adopts individual layer or double-deck heat shielding to be placed on the periphery of negative electrode, and still heat insulation effect is bad like this, causes the power consumption of filament excessive.So multiple negative electrode heat shielding fixed form or multiple negative electrode heat shielding form have just occurred.
Here a kind of multi-groove structure formula heat shielding of main employing, make it be easy to be fixed on negative electrode, has simultaneously good heat insulation effect.
The utility model content
For the deficiency that exists on prior art, the utility model provides a kind of multi-groove structure formula heat shielding, is easy to heat shielding and negative electrode are fixed, and this heat shielding has good heat insulation effect simultaneously.
To achieve these goals, the utility model is to realize by the following technical solutions: a kind of multi-groove type structural formula heat shielding, comprise the first torus 1, bullet 2 and the second torus 3, the diameter of the first torus 1 is greater than the diameter of the second torus 3, the lower end of bullet 2 is connected with the first torus 1, the upper end of bullet 2 is connected with the second torus 3, and the surrounding of the outer wall of described the first torus 1 evenly is provided with the multilayer translot, and the end of the second torus 3 evenly is provided with vertical slot 6.Be easy to heat shielding and negative electrode are assembled and welded.
According to the technical solution of the utility model, the surrounding of the outer wall of the first torus 1 evenly is provided with two-layer translot, increases like this distance of heat conduction at axial direction, reduces the loss of heat, and then improves the heat insulation effect of negative electrode.Stagger mutually in the position that is respectively the first translot 4 and the second translot 5, the first translots 4 and the second translot 5, the second translot 5 is below the first translot 4.
According to the technical solution of the utility model, the external diameter of the first torus 1 is 8-9mm, and the external diameter of the second torus 3 is 7-8mm.Here the first toric overall diameter is 8.5mm, and the second toric diameter is 7.8mm,
According to the technical solution of the utility model, the well width of the first translot 4 and the second translot 5 is 0.2-0.4mm, and the centre deviation angle of the first translot 4 and the second translot 5 is at 40-50 °, and the separation of the first translot 4 and the second translot 5 is 0.8-1.8mm.
According to the technical solution of the utility model, vertical slot 6 quantity are 12, and the end of vertical slot 6 is hatch frame.
According to the technical solution of the utility model, vertical slot 6 groove widths are 0.5-0.6mm, vertical slot 6 groove depths position 1-1.5mm on cone.
According to the technical solution of the utility model, the tapering of bullet 2 is 90 °.
According to the technical solution of the utility model, the first torus 1, bullet 2 and the second torus 3 integrated settings.Use the negative electrode of this heat shielding structure, high insulating effect can make negative electrode shorten 0.5 minute under identical filament power consumption and reach at 1050 ℃ more than temperature; The filament power consumption is little, can filament wattage reduce 1W when the working temperature that reaches 1050 ℃.
The beneficial effects of the utility model are to reduce the power consumption of filament, filament power-dissipation-reduced 1W when cathode temperature reaches 1050 ℃; The heat shielding high insulating effect shortens 0.5 minute when cathode temperature reaches 1050 ℃ under identical filament power consumption; Be easy to and negative electrode assembling and welding.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is structural representation of the present utility model;
Fig. 2 is ground floor translot schematic cross-section of the present utility model;
Fig. 3 is second layer translot schematic cross-section of the present utility model;
Fig. 4 is vertical slot schematic cross-section of the present utility model;
Fig. 5 is of the present utility model and negative electrode assembling schematic diagram.
Description of drawings, 1 is the first torus, and 2 is bullet, and 3 is the second torus, and 4 is the first translot, and 5 is the second translot, and 6 is vertical slot, and 7 is negative electrode.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
A kind of multi-groove type structural formula heat shielding as shown in Figure 1 comprises the diameter of the first torus 1, bullet 2 and the second torus 3, the first torus 1 greater than the diameter of the second torus 3, and the tapering of bullet 2 is 90 °.The lower end of bullet 2 is connected with the first torus 1, the upper end of bullet 2 is connected with the second torus 3, the surrounding of the outer wall of described the first torus 1 evenly is provided with the multilayer translot, and the end of the second torus 3 evenly is provided with vertical slot 6, is easy to heat shielding and negative electrode are assembled and welded.
The first torus 1, bullet 2 and the second torus 3 integrated settings, height of the present utility model is 10mm, and heat shielding adopts sheet material spinning to form, and sheet thickness is 0.3mm, after rotary press modelling, the thickness of heat shielding is 0.25-0.28mm, size after the actual rotary press modelling of internal diameter size employing.
The surrounding of the outer wall of the first torus 1 as shown in Figures 2 and 3 evenly is provided with two-layer translot, increases like this distance of heat conduction at axial direction, reduces the loss of heat, and then improves the heat insulation effect of negative electrode.Stagger mutually in the position that is respectively the first translot 4 and the second translot 5, the first translots 4 and the second translot 5, the second translot 5 is below the first translot 4.The external diameter of the first torus 1 is 8-9mm, and the external diameter of the second torus 3 is 7-8mm.
The first toric overall diameter is 8.5mm, the second toric diameter is 7.8mm, the well width of the first translot 4 and the second translot 5 is 0.2-0.4mm, and the centre deviation angle of the first translot 4 and the second translot 5 is at 40-50 °, and the separation of the first translot 4 and the second translot 5 is 0.8-1.8mm.
The utility model first designs vertical slot successively when design heat shielding overall structure; The design translot; Design and negative electrode type of attachment.
As shown in Figure 5, the ring at translot position and negative electrode carries out spot-welded on.Adjusted size when groove shape structure is convenient to assemble is easy to spot welding, can directly judge welding quality simultaneously.
The utility model reduces the power consumption of filament, filament power-dissipation-reduced 1W when cathode temperature reaches 1050 ℃; The heat shielding high insulating effect shortens 0.5 minute when cathode temperature reaches 1050 ℃ under identical filament power consumption; Be easy to and negative electrode assembling and welding.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. multi-groove structure formula heat shielding, it is characterized in that, comprise the first torus (1), bullet (2) and the second torus (3), the diameter of the first torus (1) is greater than the diameter of the second torus (3), the lower end of bullet (2) is connected with the first torus (1), the upper end of bullet (2) is connected with the second torus (3), the surrounding of the outer wall of described the first torus (1) evenly is provided with the multilayer translot, and the end of the second torus (3) evenly is provided with vertical slot (6).
2. a kind of multi-groove structure formula heat shielding according to claim 1, it is characterized in that, the surrounding of the outer wall of described the first torus (1) evenly is provided with two-layer translot, be respectively the first translot (4) and the second translot (5), stagger mutually in the position of the first translot (4) and the second translot (5), the second translot (5) is in the below of the first translot (4).
3. a kind of multi-groove structure formula heat shielding according to claim 1, is characterized in that, the external diameter of described the first torus (1) is 8-9mm, and the external diameter of the second torus (3) is 7-8mm.
4. a kind of multi-groove structure formula heat shielding according to claim 2, it is characterized in that, the well width of described the first translot (4) and the second translot (5) is 0.2-0.4mm, the centre deviation angle of the first translot (4) and the second translot 5 is at 40-50 °, and the separation of described the first translot (4) and the second translot (5) is 0.8-1.8mm.
5. a kind of multi-groove structure formula heat shielding according to claim 1, is characterized in that, described vertical slot (6) quantity is 12, and the end of described vertical slot (6) is hatch frame.
6. a kind of multi-groove structure formula heat shielding according to claim 1 or 5, is characterized in that, described vertical slot (6) groove width is 0.5-0.6mm, vertical slot (6) groove depth position 1-1.5mm on cone.
7. a kind of multi-groove structure formula heat shielding according to claim 1, is characterized in that, the tapering of described bullet (2) is 90 °.
8. a kind of multi-groove structure formula heat shielding according to claim 1, is characterized in that, described the first torus (1), bullet (2) and the integrated setting of the second torus (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468315 CN202940210U (en) | 2012-09-14 | 2012-09-14 | Heat shield with multi-slot structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468315 CN202940210U (en) | 2012-09-14 | 2012-09-14 | Heat shield with multi-slot structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940210U true CN202940210U (en) | 2013-05-15 |
Family
ID=48324435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220468315 Expired - Fee Related CN202940210U (en) | 2012-09-14 | 2012-09-14 | Heat shield with multi-slot structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931328A (en) * | 2019-12-06 | 2020-03-27 | 中国电子科技集团公司第十二研究所 | Cathode heater assembly |
-
2012
- 2012-09-14 CN CN 201220468315 patent/CN202940210U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931328A (en) * | 2019-12-06 | 2020-03-27 | 中国电子科技集团公司第十二研究所 | Cathode heater assembly |
| CN110931328B (en) * | 2019-12-06 | 2022-04-19 | 中国电子科技集团公司第十二研究所 | Cathode heater assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20190914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |