CN106683958B - The preparation method of composite pipe shell and helix TWT - Google Patents

The preparation method of composite pipe shell and helix TWT Download PDF

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Publication number
CN106683958B
CN106683958B CN201710068273.3A CN201710068273A CN106683958B CN 106683958 B CN106683958 B CN 106683958B CN 201710068273 A CN201710068273 A CN 201710068273A CN 106683958 B CN106683958 B CN 106683958B
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shell
pipe shell
composite pipe
preparation
bar
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CN106683958A (en
Inventor
刘燕文
�田宏
朱虹
孟鸣凤
张明晨
李玉涛
谷兵
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Shandong Microwave Vacuum Technology Co.,Ltd.
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Institute of Electronics of CAS
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/26Sealing together parts of vessels
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/12Vessels; Containers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24Manufacture or joining of vessels, leading-in conductors or bases

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microwave Tubes (AREA)

Abstract

The present invention provides a kind of preparation methods of composite pipe shell, process outer pipe shell bar and interior shell bar, form composite pipe shell prefabricated component, heat composite pipe shell prefabricated component, melt interior shell bar and do not have apertured welding with the formation of outer pipe shell bar inner wall;Composite pipe shell prefabricated component is cut and processed, composite pipe shell is obtained.The present invention uses the method for melting oxygen-free copper bar, welds together with outer pipe shell inner wall, avoids the shortcomings that there are gaps between inside and outside shell;Embedded copper composite pipe shell has reached the heat dissipation performance of fine copper shell, substantially exceeds the heat-sinking capability of pure Monel shell component;It does not need to be electroplated, does not need solder yet, production is simple, it is low in cost, the overall performance of travelling-wave tubes can be improved comprehensively, and there is very high economic value, and the shell that both can be used for preparing helix TWT can be used for the composite collection pole for preparing helix TWT.

Description

The preparation method of composite pipe shell and helix TWT
Technical field
The present invention relates to space travelling wave tube technology more particularly to a kind of preparation sides of composite pipe shell and helix TWT Method.
Background technique
Helix TWT has many advantages, such as broadband, high-gain and high power, is important microwave frequency power amplification Device is widely used in satellite communication system now.Slow-wave component is the key components of helix TWT, and effect is Realize the energy exchange between moving electron and high frequency field, its performance superiority and inferiority directly decides homogeneous tube level.Slow-wave component Heat dissipation performance be not only determine travelling-wave tubes average output power principal element, and directly affect travelling-wave tubes job stability with An important factor for reliability.With the rapid development of modern science and technology, there is an urgent need to the helix TWT of higher performance, research and The heat dissipation performance for improving slow-wave component is just particularly important.
As shown in Figure 1, helix TWT is made of electron gun 1, slow-wave component 2, collector 4.As shown in Fig. 2, spiral Line slow-wave structure is usually made of helix 6, supporting rod 7 and shell 5, and electron beam 3 is exchanged with microwave signal in slow-wave component 2 Energy.Helix is made of wire coiling, as a elongated spring, it is necessary to it be clamped and be fixed with mode appropriate In in travelling-wave tubes, the usual Ceramics material of supporting rod, to prevent electromagnetic wave outside from radiating, it is also necessary to there is the metal of coaxial placement Shield shell.Found in the development process of helix TWT, realize high-power output key be success design With produce good thermally-conductive interface.Interface between helix and supporting rod and supporting rod and Can is limitation traveling wave The key of pipe heat-sinking capability.The selection of Can needs to consider whether material has enough mechanical strengths, nonmagnetic, good Heat conductivity and elevated temperature strength.The materials such as Monel, oxygen-free copper, stainless steel are usually selected to make shell.Monel and not The steel that becomes rusty has high-intensitive, high ductility, high solderability and excellent anti-corrosion capability.Copper product has conductive and thermally conductive energy well Power easily causes shell deformation but its mechanical strength is not high.Important component of the machine components as helix TWT, Its technique, gradually improving for material will generate extreme influence to the further development of helix TWT.Single metal material There is excellent performance in one aspect, and haves the defects that not overcoming on the other hand, thus to update more preferably material The requirement of material is particularly strong.Composite material is grown rapidly in recent years as a not only long but also brand-new subject, and Each different field has been more and more widely used.
Existing composite pipe shell is to draw outer pipe shell woollen with hot spinning mode using Monel or stainless steel material.It adopts With oxygenless copper material, interior shell woollen is drawn with hot spinning mode, shell woollen outer surface in gained is silver-plated.Interior shell is pre- Product is put into outer pipe shell in the form of slide fit, and then composite pipe shell prefabricated component is put into hydrogen furnace or vacuum drying oven and is heated to appropriate temperature Degree, so that silver of the plating in oxygen-free copper on shell woollen forms yellow gold with the copper in interior shell woollen, and prior to anaerobic Copper fusing, so that outer pipe shell and interior shell woollen are welded as solder.The composite pipe shell by welding has been obtained to this Prefabricated component.Outer pipe shell and interior shell woollen, such as the welding of laser welding, electronics note and hydrogen arc weldering can also be welded with method for distinguishing Deng.Composite pipe shell prefabricated component finally is processed with wire cutting method, is cut out on shell in it specific needed for travelling-wave tubes such as fin Structure, to be finally obtained composite pipe shell.
But it uses and is consolidated outer pipe shell and interior shell using the methods of soldering, laser welding, the welding of electronics note and hydrogen arc weldering When being connected together, gap is certainly existed between inside and outside shell, to reduce the heat-sinking capability of composite pipe shell.
Summary of the invention
(1) technical problems to be solved
In order to solve the above problems existing in the present technology, the present invention provides a kind of composite pipe shell and helix TWTs Preparation method.
(2) technical solution
The present invention provides a kind of preparation methods of composite pipe shell, the preparation suitable for helix TWT shell, comprising:
Step S1: processing outer pipe shell bar;
Step S2: shell bar in processing;
Step S3: composite pipe shell prefabricated component is formed;
Step S4: heating the composite pipe shell prefabricated component, melts interior shell bar and is formed with outer pipe shell bar inner wall Do not have apertured welding;
Step S5: cutting composite pipe shell prefabricated component;
Step S6: processing composite pipe shell prefabricated component obtains composite pipe shell.
The present invention also provides a kind of preparation method of helix TWT, shell therein is by above-mentioned preparation method system It is standby.
(3) beneficial effect
It can be seen from the above technical proposal that the preparation method of composite pipe shell and helix TWT of the invention have with It is lower the utility model has the advantages that
(1) using the method for melting oxygen-free copper bar, weld together with outer pipe shell inner wall, rather than use and be brazed, Outer pipe shell and interior shell are fixed together by the methods of laser welding, the welding of electronics note and hydrogen arc weldering, avoid several sides below The shortcomings that there are gaps between inside and outside shell caused by method.
(2) heat dissipation performance that copper composite pipe shell has reached fine copper shell is embedded, pure Monel shell component is substantially exceeded Heat-sinking capability.
(3) it is different from existing composite pipe shell preparation method, does not need to be electroplated, does not also need solder, production is simple, at This is cheap, can improve the overall performance of travelling-wave tubes comprehensively, has very high economic value.
(4) composite pipe shell preparation method of the invention both can be used for preparing the shell of helix TWT, can also use In the composite collection pole for preparing helix TWT.
Detailed description of the invention
Fig. 1 is existing helix TWT structural schematic diagram;
Fig. 2 is existing common shell structure schematic diagram;
Fig. 3 is the composite pipe shell preparation method flow chart of the embodiment of the present invention;
Fig. 4 a to Fig. 4 f is composite pipe shell structural schematic diagram corresponding with composite pipe shell preparation method each stage;
Fig. 5 is the composite pipe shell structural schematic diagram prepared by the composite pipe shell preparation method of the embodiment of the present invention;
Fig. 6 is to compare figure using the experiment of the heat dissipation performance of different shells.
[symbol description]
1- electron gun;2- slow-wave component;3- electron beam;4- collector;5- shell;6- helix;7- supporting rod;8- outer tube Shell;Shell in 9-;10- fin.
Specific embodiment
The composite pipe shell preparation method of helix TWT of the invention, composite pipe shell include outer pipe shell and interior shell, root It should be compatible and this premise that complement one another according to the performance requirement of composite material and the group element material of composition composite material, By testing repeatedly, interior envelope material is oxygen-free copper, and outer pipe shell material is Monel or magnetism-free stainless steel, is allowed to both maintain illiteracy Like this or the intensity of magnetism-free stainless steel, and the excellent heat conductivity performance with copper.By the way that oxygen-free copper is melted, with outer pipe shell inner wall into Row seamless welding realizes the connection of the Monel or magnetism-free stainless steel and the oxygen-free copper of interior shell of outer pipe shell.
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference Attached drawing, the present invention is described in more detail.
Referring to Fig. 3, first embodiment of the invention provides a kind of preparation method of composite pipe shell, the composite pipe shell prepared Shell as helix TWT, comprising:
Step S1: processing outer pipe shell bar.
Specifically, tubbiness shell as shown in fig. 4 a is made in outer pipe shell bar vehicle with lathe, and is cleaned.Outer pipe shell Select Monel or the high metal tube material of magnetism-free stainless steel equal strength.
Step S2: shell bar in processing.
Wherein, interior shell bar is cut into the length to match with the tubbiness shell of step S1, as shown in Figure 4 b, interior shell stick Expect that outer diameter is less than the internal diameter of outer pipe shell bar, and is cleaned.The high metal bar materials of thermal conductivities such as interior shell selection oxygen-free copper.
Step S3: composite pipe shell prefabricated component is formed.
Interior shell bar shown in Fig. 4 b is put into the tubbiness shell of outer pipe shell shown in Fig. 4 a, is formed as illustrated in fig. 4 c Composite pipe shell prefabricated component.
Step S4: welding composite pipe shell prefabricated component.
Above-mentioned composite pipe shell prefabricated component is put into the temperature that oxygen-free copper fusing is heated in hydrogen furnace or vacuum drying oven, so that anaerobic The fusing of copper rod material does not simultaneously have apertured welding with the formation of outer pipe shell bar inner wall, as shown in figure 4d.Wherein, vacuum drying oven vacuum degree exists 1×10-2Pa to 1 × 10-3Between pa, the dew point of hydrogen of hydrogen furnace is lower than -70 DEG C, and heating temperature should be at 1100 DEG C -1150 DEG C.
Step S5: cutting composite pipe shell prefabricated component.
The composite pipe shell prefabricated component that step S4 is obtained is cut into required length with lathe, obtains multiple tube shown in Fig. 4 e Shell prefabricated component.
Step S6: processing composite pipe shell prefabricated component obtains composite pipe shell.
The composite pipe shell prefabricated component shown in wire cutting method manuscript 4e, cuts out the helixes such as fin in it on shell Specific structure needed for travelling-wave tubes, as shown in fig. 4f, to be finally obtained composite pipe shell as shown in Figure 5.
The composite pipe shell that the above method is prepared is as shown in Figure 5.8 be outer pipe shell in figure, and 9 be interior shell, and 10 be fin, 6 It is supporting rod for helix, 7.Outer pipe shell 8 and interior shell 9 are all tubulose, and 8 internal diameter of outer pipe shell is consistent with interior 9 outer diameter of shell, inner tube In outer pipe shell inner cavity, 8 inner wall of outer pipe shell is closely welded together valve jacket with interior 9 outer peripheral surface of shell.In made of the present invention Embedding copper composite pipe shell has reached the heat dissipation performance of fine copper shell, substantially exceeds the heat-sinking capability of pure Monel shell component, such as Fig. 6 It is shown.
The present invention uses the method for welding together the fusing of oxygen-free copper bar with outer pipe shell inner wall, rather than uses pricker Outer pipe shell and interior shell are fixed together by the methods of weldering, laser welding, the welding of electronics note and hydrogen arc weldering, avoid these types side The shortcomings that there are gaps between inside and outside shell caused by method, the invention is simple and feasible, at low cost, substantially increases helix traveling wave The heat dissipation performance of pipe, and then the service life of device is substantially prolonged, great economic benefit is generated, there is very high economic value.
The shell that the composite pipe shell that the above method is prepared can be used as helix TWT uses, and can also be used as spiral The composite collection pole of line travelling-wave tubes uses, i.e., above-mentioned preparation method is applicable not only to the preparation of helix TWT shell, equally Preparation suitable for helix TWT composite collection pole.
Second embodiment of the invention provides a kind of preparation method of helix TWT, shell therein and/or collection Pole is prepared by the preparation method of first embodiment, and slow-wave component and electron gun, collector including the shell are assembled into spiral Line travelling-wave tubes.
So far, attached drawing is had been combined the present embodiment is described in detail.According to above description, those skilled in the art There should be clear understanding to the preparation method of composite pipe shell and helix TWT of the invention.
It should be noted that in attached drawing or specification text, the implementation for not being painted or describing is affiliated technology Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, the above-mentioned definition to each element and not only limiting Various specific structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can carry out simply more it Change or replaces, such as:
(1) direction term mentioned in embodiment, such as "upper", "lower", "front", "rear", "left", "right" etc. are only ginsengs The direction for examining attached drawing, the protection scope being not intended to limit the invention;
(2) above-described embodiment can be based on the considerations of design and reliability, and the collocation that is mixed with each other uses or and other embodiments Mix and match uses, i.e., the technical characteristic in different embodiments can freely form more embodiments.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention Within the scope of shield.

Claims (8)

1. a kind of preparation method of composite pipe shell, the preparation suitable for helix TWT shell characterized by comprising
Step S1: processing outer pipe shell bar;
Step S2: shell bar in processing;
Step S3: composite pipe shell prefabricated component is formed;
Step S4: heating the composite pipe shell prefabricated component, and so that interior shell bar is melted and is formed with outer pipe shell bar inner wall does not have The welding in gap;The step specifically includes: the composite pipe shell prefabricated component being put into hydrogen furnace or vacuum drying oven and is heated to oxygen-free copper The temperature of fusing, so that interior shell bar melts and do not have apertured welding with the formation of outer pipe shell bar inner wall;
Step S5: cutting composite pipe shell prefabricated component;
Step S6: processing composite pipe shell prefabricated component obtains composite pipe shell,
Wherein, the outer pipe shell bar is Monel or non-magnetic rustproof Steel material, and said inner tube shell bar is oxygenless copper material.
2. preparation method as described in claim 1, which is characterized in that heating temperature is 1100 DEG C -1150 DEG C;Vacuum drying oven it is true Reciprocal of duty cycle is 1 × 10-2Pa to 1 × 10-3Between pa, the dew point of hydrogen of hydrogen furnace is lower than -70 DEG C.
3. preparation method as described in claim 1, which is characterized in that the step S1 includes: with lathe by outer pipe shell bar Vehicle is made tubbiness shell and is cleaned.
4. preparation method as claimed in claim 3, which is characterized in that the step S2 include: by interior shell bar be cut into The length that tubbiness shell matches, interior shell bar outer diameter are less than the internal diameter of outer pipe shell bar, and are cleaned.
5. preparation method as described in claim 1, which is characterized in that the step S3 includes: that interior shell bar is put into outside In shell bar, composite pipe shell prefabricated component is formed;The step S5 includes: that composite pipe shell prefabricated component is cut into required length with lathe Degree.
6. preparation method as described in claim 1, which is characterized in that the step S6 includes: multiple with wire cutting method processing Shell prefabricated component is closed, cuts out fin on shell in it.
7. preparation method as described in claim 1, which is characterized in that the composite pipe shell is the shell of helix TWT.
8. a kind of preparation method of helix TWT, which is characterized in that shell therein is by system any in claim 1 to 7 Preparation Method preparation.
CN201710068273.3A 2017-02-07 2017-02-07 The preparation method of composite pipe shell and helix TWT Active CN106683958B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1571096A (en) * 2003-07-21 2005-01-26 中国科学院电子学研究所 Combined extrusion method using transition cellpacking to realize helical slow-wave structure
CN1681070A (en) * 2004-04-09 2005-10-12 中国科学院电子学研究所 Composite casing of travelling-wave tube
CN104485270A (en) * 2014-11-10 2015-04-01 安徽华东光电技术研究所 Manufacturing process of slow wave system for helix travelling wave tube
CN106271428A (en) * 2016-08-31 2017-01-04 安徽华东光电技术研究所 Method for processing composite slow wave tube shell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1571096A (en) * 2003-07-21 2005-01-26 中国科学院电子学研究所 Combined extrusion method using transition cellpacking to realize helical slow-wave structure
CN1681070A (en) * 2004-04-09 2005-10-12 中国科学院电子学研究所 Composite casing of travelling-wave tube
CN104485270A (en) * 2014-11-10 2015-04-01 安徽华东光电技术研究所 Manufacturing process of slow wave system for helix travelling wave tube
CN106271428A (en) * 2016-08-31 2017-01-04 安徽华东光电技术研究所 Method for processing composite slow wave tube shell

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Effective date of registration: 20210305

Address after: 250101 Room 101, 1st floor, building 15, No.9, Kuangyuan Road, Gongye North Road, Wangsheren street, Licheng District, Jinan City, Shandong Province

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