CN100426444C - Composite casing of travelling-wave tube - Google Patents
Composite casing of travelling-wave tube Download PDFInfo
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- CN100426444C CN100426444C CNB2004100308911A CN200410030891A CN100426444C CN 100426444 C CN100426444 C CN 100426444C CN B2004100308911 A CNB2004100308911 A CN B2004100308911A CN 200410030891 A CN200410030891 A CN 200410030891A CN 100426444 C CN100426444 C CN 100426444C
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- woolen cloth
- interior
- pipe shell
- tube shell
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Abstract
The present invention relates to the technical field of electronic vacuum tubes, which is a composite tube shell of a traveling-wave tube. The composite tube shell comprises an outer tube shell and an inner tube shell, wherein both of the outer tube shell and the inner tube shell are tubular, and the lengths of the outer tube shell and the inner tube shell are same; the inner diameter of the outer tube shell is adapted to the outer diameter of the inner tube shell, the inner tube shell is sheathed in the inner cavity of the outer tube shell, and the inner wall surface of the outer tube shell is fixed to the periphery surface of the inner tube shell. Being different from the existing composite tube shell, the present invention has the advantages of simple manufacture and low cost, and the overall performance of the traveling-wave tube can be enhanced totally.
Description
Technical field
The present invention relates to electronic vacuum Manifold technology field, is a kind of NEW TYPE OF COMPOSITE shell that is used for travelling wave tube.
Background technology
Travelling wave tube is the wide band large power, electrically vacuum device of a kind of high power, is widely used in fields such as radar, navigation, electronic jamming and satellite communication, and effect is generation or amplifies high-power microwave or millimeter wave.Shell is the container of travelling wave tube interaction region, is the framework of TWT slow wave structure, and its performance directly influences the efficient of travelling wave tube mutual effect, and the overall performance of travelling wave tube is had direct material impact.
Travelling wave tube is a kind of electron tube, and shell at first must have vacuum leakproofness preferably; Secondly must have certain mechanical strength, in making and using, can modification not damage making it; Must have electric conductivity preferably in addition, so that the loss of microwave in the shell or millimeter wave is low as far as possible.But, no matter use which kind of material, to the often mutual contradiction of the above-mentioned requirements of shell, be difficult to satisfy all requirements.In order to guarantee that shell has enough mechanical strengths, traditional common shell uses materials such as Monel, magnetism-free stainless steel.But these material conductances are lower, and the microwave that transmits in the shell with these made, the high-frequency loss of millimeter wave are higher.Because the electric conductivity of oxygen-free copper is very good, people also attempt making the travelling wave tube shell with oxygen-free copper, facts have proved, can make the power of travelling wave tube adopt the travelling wave tube of Monel shell high by 20%.Yet, the mechanical strength of the oxygen-free copper of domestic production is not enough, add that travelling wave tube needs multiple tracks Technologies for Heating Processing such as exhaust bake-out in process of production, the further softening transform of oxygen-free copper, therefore, except the laboratory is studied,, in practical travelling wave tube, do not adopt the oxygen-free copper shell if do not take other measure.
In order to make the copper product with excellent conductive capability have enough mechanical strengths, people have invented disperse copper, and this material has added alundum (Al (Al in copper matrix
2O
3) granule, the intensity of the disperse copper of formation increases, and electric conductivity descends also seldom.People also considered with disperse copper production tube shell of traveling wave tube, but the disperse copper of domestic production can't guarantee vacuum-tightness.In addition, use the example of molybdenum-copper in addition abroad, but its electric conductivity also there is bigger decline with the oxygen-free copper ratio as the travelling wave tube shell.
Existing a kind of composite pipe shell is invented for the intensity that improves periodic focusing magnetic field, and its structure as shown in Figure 1.The pole shoe that label 1 expression among the figure is made of soft magnetic material, and label 2 is the annulus with no magnetic made.Label 3 indicates it and is contained in the outer magnet steel of travelling wave tube, and a plurality of pole shoes and a plurality of annulus weld with structure shown in Figure 1, have formed the composite pipe shell with vacuum-tightness.This shell is a kind of improvement on the common shell travelling wave tube basis.In common shell travelling wave tube, pole shoe 1 and common shell 4 combine with the structure of Fig. 2, and common here shell 4 itself has vacuum-tightness, and it and pole shoe 1 not necessarily will weld.No matter under composite pipe shell situation shown in Figure 1 still was common shell situation shown in Figure 2, the magnetic field that magnet steel 3 is produced all imported to shell inside by pole shoe 1, focused on thereby electronics wherein annotated.But under situation shown in Figure 1, because pole shoe 1 inside has not had the bubble-tight common shell 4 of assurance, the situation that the endoporus of pole shoe 1 can be made more shown in Figure 2ly is little.Therefore, be to have same overall dimension and be under the situation with a kind of permanent magnetic material at magnet steel 3, magnetic field in shell shown in Figure 1 than situation shown in Figure 2 under magnetic field height in the shell, focus on thereby can annotate, and then obtain more powerful travelling wave tube the electronics of bigger electric current.Comprehensively above-mentioned, the main purpose of this composite pipe shell is to improve the focusing power of the focusing system of being made up of pole shoe 1 and magnet steel 3.
Summary of the invention
In order to overcome above-mentioned difficulties, the present invention proposes a kind of NEW TYPE OF COMPOSITE shell that is used for travelling wave tube, it is different from existing composite pipe shell, it makes simple, and is with low cost, can improve the overall performance of travelling wave tube comprehensively.
For achieving the above object, technical solution of the present invention provides a kind of composite pipe shell that is used for travelling wave tube, it comprises: outer pipe shell and interior shell, outer pipe shell and interior shell all are tubulose, the two length is identical, outer pipe shell internal diameter and interior shell external diameter are suitable, and interior shell is placed in the outer pipe shell inner chamber, and outer pipe shell internal face and interior shell outer peripheral face are affixed.
Described composite pipe shell, the tolerance≤0.02mm of its described outer pipe shell internal diameter and interior shell external diameter.
Described composite pipe shell, its described outer pipe shell are by Monel, magnetism-free stainless steel made.
Described composite pipe shell, shell was by the oxygenless copper material manufacturing in it was described.
Described composite pipe shell, the inner wall of tube shell face was provided with fin in it was described.
A kind of composite pipe shell manufacture method that is used for travelling wave tube, it comprises:
(a) draw the outer pipe shell woolen cloth with the hot spinning mode, woolen cloth is cut into Len req, and clean;
(b) draw interior shell woolen cloth with the hot spinning mode, woolen cloth is cut into the length adaptive with outer pipe shell, clean, silver-plated at the woollen outer peripheral face of interior shell;
(c) the interior shell prefabricated component that (b) step is obtained is put into the outer pipe shell inner core that (a) step obtains with the sliding form of joining, and obtains the composite pipe shell prefabricated component;
(d) the composite pipe shell prefabricated component is put into the hydrogen stove or vacuum furnace heats, make to electroplate the copper formation yellow gold in the silver on the shell woolen cloth and interior shell woolen cloth in oxygen-free copper, and prior to the oxygen-free copper fusing, as scolder outer pipe shell and interior shell woolen cloth are welded, get finished product.
Described composite pipe shell manufacture method, it cuts out fin with wire cutting method on interior inner wall of tube shell after (c) step.
Described composite pipe shell manufacture method, it is in (d) step, or employing laser welding, the welding of electronics notes and argon arc welding are fixed together outer pipe shell and interior shell.
Description of drawings
The existing composite pipe shell structural representation of Fig. 1;
The existing common tube shell structure of Fig. 2 schematic diagram;
Fig. 3 the present invention is used for the composite pipe shell structural representation of travelling wave tube;
Fig. 4 the present invention is used for the composite pipe shell process flow diagram of travelling wave tube.
Embodiment
The NEW TYPE OF COMPOSITE shell that the present invention is used for travelling wave tube as shown in Figure 3.Number in the figure 31 is an outer pipe shell, and label 32 is interior shell.Outer pipe shell 31 all is a tubulose with interior shell 32, and the two length is identical, and outer pipe shell 31 internal diameters and interior shell 32 external diameters are suitable, and interior shell 32 is placed in outer pipe shell 31 inner chambers, and outer pipe shell 31 internal faces and interior shell 32 outer peripheral faces are affixed.Outer pipe shell 31 not only has enough mechanical strengths by made such as Monel, magnetism-free stainless steels, and has guaranteed vacuum-tightness.Interior shell 32 is by the oxygen-free copper manufacturing with excellent conductive capability, and interior shell 32 can cut out various shapes with line, such as having fin 32a on the interior shell 32.In addition, outer pipe shell 31 and interior pipe 32 will weld in appropriate mode.
Figure 3 shows that the present invention is used for the manufacturing process of the NEW TYPE OF COMPOSITE shell of travelling wave tube, in a preferred embodiment, this technology comprises the steps:
1. adopt the Monel material, draw the outer pipe shell woolen cloth with the hot spinning mode, interior external diameter tolerance all requires in 0.02mm.Gained outer pipe shell woolen cloth is cut into appropriate length with lathe, and cleans, obtain the outer pipe shell shown in Fig. 4 a.
2. the employing oxygenless copper material draws interior shell woolen cloth with the hot spinning mode, requires the external diameter tolerance in 0.02mm, and id tolerance is not done requirement.Shell woolen cloth in the gained is cut into appropriate length with lathe, and then cleans, silver-plated, obtain interior shell prefabricated component shown in Fig. 4 b.
3. the interior shell prefabricated component shown in Fig. 4 b is joined form with cunning and put into the outer pipe shell shown in Fig. 4 a, form the composite pipe shell prefabricated component shown in Fig. 4 c without welding.
4. above-mentioned composite pipe shell prefabricated component without welding is put into the hydrogen stove or vacuum furnace is heated to appropriate temperature, make to electroplate the copper formation yellow gold in the silver on the shell woolen cloth and interior shell woolen cloth in oxygen-free copper, and prior to the oxygen-free copper fusing, thereby outer pipe shell and interior shell woolen cloth are welded as scolder.Obtained the composite pipe shell prefabricated component of process welding to this.
5. can weld shell and interior shell woolen cloth among Fig. 3 with method for distinguishing, annotate welding and argon arc welding etc. such as laser welding, electronics.
6. with the composite pipe shell prefabricated component shown in the wire cutting method manuscript 4c, cut out the required ad hoc structures of travelling wave tube such as fin within it on the shell, thereby finally obtained composite pipe shell as shown in Figure 3.
Claims (2)
1. composite pipe shell manufacture method that is used for travelling wave tube is characterized in that comprising:
(a) draw the outer pipe shell woolen cloth with the hot spinning mode, woolen cloth is cut into Len req, and clean; Outer pipe shell is by Monel or magnetism-free stainless steel made;
(b) draw interior shell woolen cloth with the hot spinning mode, woolen cloth is cut into the length adaptive with outer pipe shell, clean, silver-plated at the woollen outer peripheral face of interior shell; Interior shell woolen cloth is a shell woolen cloth in the oxygen-free copper;
(c) the interior shell prefabricated component that (b) step is obtained is put into the outer pipe shell inner core that (a) step obtains with the sliding form of joining, and obtains the composite pipe shell prefabricated component;
(d) the composite pipe shell prefabricated component is put into the hydrogen stove or vacuum furnace heats, make to electroplate the copper formation yellow gold in the silver on the shell woolen cloth and interior shell woolen cloth in oxygen-free copper, and prior to the oxygen-free copper fusing, as scolder outer pipe shell and interior shell woolen cloth are welded, get finished product.
2. composite pipe shell manufacture method as claimed in claim 1 is characterized in that: after (c) step, cut out fin with wire cutting method on interior inner wall of tube shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100308911A CN100426444C (en) | 2004-04-09 | 2004-04-09 | Composite casing of travelling-wave tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100308911A CN100426444C (en) | 2004-04-09 | 2004-04-09 | Composite casing of travelling-wave tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1681070A CN1681070A (en) | 2005-10-12 |
| CN100426444C true CN100426444C (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100308911A Expired - Fee Related CN100426444C (en) | 2004-04-09 | 2004-04-09 | Composite casing of travelling-wave tube |
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| CN (1) | CN100426444C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944466B (en) * | 2010-07-30 | 2012-04-25 | 安徽华东光电技术研究所 | Method for manufacturing elastic tube shell of slow-wave system of traveling wave tube |
| CN101944469B (en) * | 2010-09-06 | 2012-05-30 | 安徽华东光电技术研究所 | Reversed-field permanent-magnet focusing system for multi-beam millimeter wave traveling-wave tubes and manufacturing method thereof |
| CN102990301B (en) * | 2012-11-27 | 2015-04-01 | 南京三乐电子信息产业集团有限公司 | Method for processing composite pipe shell with 120-degree equally divided straight flutes |
| CN106683958B (en) * | 2017-02-07 | 2019-02-15 | 中国科学院电子学研究所 | The preparation method of composite pipe shell and helix TWT |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0100996A1 (en) * | 1982-08-06 | 1984-02-22 | Siemens Aktiengesellschaft | Manufacturing method of a helical delay line for travelling-wave tubes |
| DE3434132A1 (en) * | 1984-09-18 | 1986-03-20 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Travelling-wave tube and a method for its production |
| US4820955A (en) * | 1986-11-26 | 1989-04-11 | Siemens Aktiengesellschaft | Traveling wave tube comprising periodic permanent magnetic focusing system with glass/epoxy retaining means |
| CN2052439U (en) * | 1989-03-07 | 1990-02-07 | 杨六平 | Magnetization treating device for fuel |
| JPH06181035A (en) * | 1991-02-05 | 1994-06-28 | Toshiba Corp | Traveling-wave tube |
| CN1347132A (en) * | 2000-10-08 | 2002-05-01 | 中国科学院电子学研究所 | Full-metallic spiral slow-wave structure |
-
2004
- 2004-04-09 CN CNB2004100308911A patent/CN100426444C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0100996A1 (en) * | 1982-08-06 | 1984-02-22 | Siemens Aktiengesellschaft | Manufacturing method of a helical delay line for travelling-wave tubes |
| DE3434132A1 (en) * | 1984-09-18 | 1986-03-20 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Travelling-wave tube and a method for its production |
| US4820955A (en) * | 1986-11-26 | 1989-04-11 | Siemens Aktiengesellschaft | Traveling wave tube comprising periodic permanent magnetic focusing system with glass/epoxy retaining means |
| CN2052439U (en) * | 1989-03-07 | 1990-02-07 | 杨六平 | Magnetization treating device for fuel |
| JPH06181035A (en) * | 1991-02-05 | 1994-06-28 | Toshiba Corp | Traveling-wave tube |
| CN1347132A (en) * | 2000-10-08 | 2002-05-01 | 中国科学院电子学研究所 | Full-metallic spiral slow-wave structure |
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| Publication number | Publication date |
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| CN1681070A (en) | 2005-10-12 |
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