An integrated traveling wave tube

Abstract

The present invention relates to the field of traveling wave tubes, and in particular to an integrated traveling wave tube, comprising an electron gun and a collector, and a tube shell connecting the electron gun and the collector, the traveling wave tube also comprising two sections of spiral wires and at least three clamping rods, after the two spiral wires are coaxially close together, each clamping rod is arranged at intervals around the circumference of the spiral wires, and each clamping rod clamps the two spiral wires to form an internal component, the tube shell can be thermally expanded and deformed, so that the internal cavity of the tube shell can be placed between the internal components after the tube shell is thermally expanded, and after the tube shell is cooled and shrunk, the tube shell presses the clamping rods against the spiral wires. The present invention can form an internal component by clamping and assembling the two sections of spiral wires through a plurality of clamping rods, and due to the limitation of the clamping rods, it is conducive to controlling the coaxiality of the two sections of spiral wires, and the two sections of spiral wires are assembled together on the outside of the tube shell, which can facilitate the control of the relative angle and relative position of the two sections of spiral wires, and avoid the position deviation of the spiral wires at both ends caused by the need to reconnect the tube shells at both ends in the prior art.

Description

Technical Field

[0001] The invention relates to the field of traveling wave tubes, and in particular to an integrated traveling wave tube. Background Art

[0002] The traveling wave tube is a widely used microwave power amplifier device, which is widely used in radar, microwave remote sensing and other fields. The traveling wave tube usually includes an emitter, a tube shell and a collector. A spiral wire is arranged inside the tube shell to amplify the radio frequency signal. The installation accuracy of the spiral wire inside the tube shell is the key to the working stability of the traveling wave tube. At present, when assembling the existing traveling wave tube, the tube shell and the spiral wire are divided into two-section structures, and the spiral wire and the clamping rod are respectively installed in the two tube shells, and then the two sections of the tube shell are welded. In this way, it is difficult to control the relative position accuracy of the two sections of the spiral wire when the two sections of the tube shell are assembled again. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an integrated traveling wave tube, which can form an internal component by clamping and combining two sections of spiral wires through multiple clamping rods. Due to the limitation of the clamping rods, it is beneficial to control the coaxiality of the two sections of spiral wires. Moreover, the two sections of spiral wires are assembled together on the outside of the tube shell, which can facilitate the control of the relative angle and relative position of the two sections of spiral wires, avoiding the position deviation of the two ends of the spiral wire caused by the need to reconnect the two ends of the tube shell in the prior art.

[0004] In order to solve the above problems, the present invention provides an integrated traveling wave tube, comprising an electron gun and a collector, and a tube shell connecting the electron gun and the collector, wherein the tube shell is a composite tube shell, and the traveling wave tube also includes two sections of spiral wires and at least three clamping rods. After the two spiral wires are coaxially close together, each of the clamping rods is arranged at intervals around the circumference of the spiral wire, and each of the clamping rods clamps the two spiral wires to form an internal component. The tube shell can be thermally expanded and deformed so that after the tube shell is thermally expanded, the internal component can be placed in the inner cavity of the tube shell. After the tube shell is cooled and contracted, the tube shell presses the clamping rods against the spiral wire.

[0005] Furthermore, the difference between the outer diameter of the built-in component and the inner diameter of the tube shell is greater than or equal to 0.05 mm and less than or equal to 0.2 mm.

[0006] Furthermore, three clamping rods are provided.

[0007] Furthermore, the tube shell is an integrated tube shell.

[0008] Furthermore, the tube shell includes two sections of sub-tube shells, and the two sections of the sub-tube shells are welded.

[0009] Furthermore, a positioning piece is provided between each of the clamping rods to separate the two spiral lines, and the spiral line abuts against the positioning piece.

[0010] Furthermore, the positioning member is a protrusion integrally formed on the clamping rod.

[0011] Furthermore, the positioning member is a limiting cylinder clamped between the clamping rods.

[0012] Furthermore, the clamping rod is formed with a positioning notch, and the limiting cylinder is formed with a positioning protrusion inserted into the positioning notch.

[0013] The beneficial effect of the present invention is that the present invention provides an integrated traveling wave tube, which can form an internal component by clamping and combining two sections of spiral wires through multiple clamping rods. Due to the limitation of the clamping rods, it is beneficial to control the coaxiality of the two sections of spiral wires. Moreover, the two sections of spiral wires are assembled together on the outside of the tube shell, which can facilitate the control of the relative angle and relative position of the two sections of spiral wires, avoiding the position deviation of the two ends of the spiral wire caused by the need to reconnect the two ends of the tube shell in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0015] Figure 1 It is a schematic side cross-sectional structure diagram of an embodiment of the present invention.

[0016] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at A in the illustrated embodiment.

[0017] Figure 3 for Figure 1 Schematic diagram of the side cross-sectional structure.

[0018] Figure 4 This is a schematic diagram of the structure of another embodiment of the present application at a position between two spiral lines.

[0019] Among them: 1. tube shell; 2. internal parts; 201. spiral line; 202. clamping rod; 3. protrusion; 4. limit cylinder; 5. positioning notch. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0021] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0022] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0025] In the present invention, if Figure 1-4 As shown in the figure, an integrated traveling wave tube is provided, comprising an electron gun and a collector, and a tube shell 1 connecting the electron gun and the collector, wherein the tube shell 1 is a composite tube shell 1, and the traveling wave tube also comprises two sections of spiral wires 201 and at least three clamping rods 202. After the two spiral wires 201 are coaxially brought together, each of the clamping rods 202 is arranged at intervals around the circumference of the spiral wires 201, and each of the clamping rods 202 clamps the two spiral wires 201 to form an internal component 2. The tube shell 1 can be thermally expanded and deformed, so that after the tube shell 1 is thermally expanded, the internal component can be placed in the inner cavity of the tube shell 1. After the tube shell 1 is cooled and contracted, the tube shell 1 presses the clamping rods 202 against the spiral wires 201.

[0026] When assembling the traveling wave tube of the present invention, two sections of spiral wires 201 can be clamped and assembled by multiple clamping rods 202 to form an internal component 2. In this process, due to the limitation of the clamping rods 202, it is beneficial to control the coaxiality of the two sections of spiral wires 201. Moreover, the two sections of spiral wires 201 are assembled together on the outside of the tube shell 1, which can facilitate the control of the relative angle and relative position of the two sections of spiral wires 201, thereby avoiding the position deviation of the spiral wires 201 at both ends caused by the need to reconnect the tube shells 1 at both ends in the prior art. Since the positions of the spiral wires at both ends can be accurately controlled, the isolation between the input spiral wire 201 and the output spiral wire 201 can be improved after the tube shell 1 is assembled, thereby greatly improving the working stability of the traveling wave tube. In addition, during assembly, it is urgent to assemble the spiral wire 201 and the clamping rod 202 in sequence, which simplifies the assembly process of the spiral wire 201 and the clamping rod 202. During assembly, it is only necessary to heat the tube shell 1 so that the internal component 2 is placed in the tube shell 1 after the tube shell 1 is thermally expanded, thereby greatly simplifying the assembly process.

[0027] A further optimization of the present invention is that the difference between the outer diameter of the built-in component 2 and the inner diameter of the tube shell 1 is greater than or equal to 0.05 mm and less than or equal to 0.2 mm. With such a setting, the tube shell 1 can have a better fixing effect when fixing the built-in component 2.

[0028] exist Figure 1 In the illustrated embodiment, more specifically, three clamping rods 202 are provided.

[0029] Preferably, the structure of the tube shell 1 is an integrated tube shell 1. The use of a whole-section tube shell 1 can maintain the integrity of the tube shell 1, and it is easy to ensure the matching accuracy between the tube shell 1 and the spiral line 201, and it is easy to make the tube shell 1 have a high coaxial accuracy with the spiral line, so that the center of the magnetic component of the tube shell and the center of the spiral line have a high coaxiality, and it is also easy to process the tube shell 1.

[0030] Alternatively, in an alternative embodiment, the tube shell 1 includes two sections of sub-tube shells 1, and the two sections of the sub-tube shells 1 are welded. When the two sections of sub-tube shells 1 are used, the two ends of the built-in component 2 can be respectively installed in the two-end sub-tube shells 1 during assembly, and the two sections of sub-tube shells 1 are close to each other and welded. In this way, the input electrodes and output electrodes on the two sections of the sub-tube shells can be adjusted and aligned with the spiral lines at the corresponding positions.

[0031] In order to further ensure the assembly accuracy of the present invention, a positioning piece is provided between each of the clamping rods 202 to separate the two spirals 201, and the spirals 201 abut against the positioning piece. By providing the positioning piece on the clamping rods 202, the spirals 201 can be positioned by the positioning piece when assembling the spirals 201, thereby reducing the difficulty of assembling and positioning the spirals 201, and improving the positioning accuracy of the spirals 201.

[0032] Regarding the structure of the positioning member, in a preferred embodiment, as Figure 1 As shown, the positioning member is a protrusion 3 integrally formed on the clamping rod 202. In this way, when processing the clamping rod 202, the positioning member can be conveniently processed, and the position accuracy of the positioning member can be easily ensured.

[0033] Alternatively, the positioning member may also be Figure 4 In the embodiment shown, the positioning member is a limiting cylinder 4 clamped between the clamping rods 202. As shown in the figure, by providing the positioning cylinder, when the spiral line 201 is positioned, there is no requirement for the relative position of the positioning cylinder and the spiral line 201 in the circumferential direction, which reduces the precision requirement for the installation and assembly of the positioning member in the circumferential direction.

[0034] Regarding the installation of the limiting cylinder 4, in the illustrated embodiment, more specifically, the clamping rod 202 is formed with a positioning notch 5, and the limiting cylinder 4 is formed with a positioning protrusion inserted into the positioning notch 5. As shown in the figure, in the illustrated embodiment, the side of the limiting cylinder 4 is formed with a positioning protrusion, so that the limiting cylinder 4 can be made to have a certain thickness, and the exposure of the limiting cylinder 4 in the inner cross section of the spiral line 201 can be reduced.

[0035] Of course, in an alternative embodiment, the positioning protrusion may also be directly set as a protrusion protruding from the surface side of the limiting cylinder 4.

[0036] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0037] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An integrated traveling wave tube, comprising an electron gun and a collector, and a tube shell connecting the electron gun and the collector, characterized in that: The tube shell is a composite tube shell, the traveling wave tube further comprises two sections of spiral wires and at least three clamping rods, after the two spiral wires are coaxially close together, the clamping rods are arranged at intervals around the circumference of the spiral wires, and the clamping rods clamp the two spiral wires to form an internal component, the tube shell can be thermally expanded and deformed, so that the internal component can be placed in the inner cavity of the tube shell after the tube shell is thermally expanded, and after the tube shell is cooled and contracted, the tube shell presses the clamping rods against the spiral wires; The tube shell is an integrated tube shell, or the tube shell includes two sections of sub-tube shells, and the two sections of the sub-tube shells are welded; A positioning piece is provided between each of the clamping rods to separate the two spiral lines, and the spiral line abuts against the positioning piece.

2. The integrated traveling wave tube according to claim 1, characterized in that: The difference between the outer diameter of the built-in component and the inner diameter of the tube shell is greater than or equal to 0.05 mm and less than or equal to 0.2 mm.

3. The integrated traveling wave tube according to claim 1, characterized in that: The clamping rods are provided with three.

4. The integrated traveling wave tube according to claim 1, characterized in that: The positioning member is a protrusion integrally formed on the clamping rod.

5. The integrated traveling wave tube according to claim 1, characterized in that: The positioning member is a limiting cylinder clamped between the clamping rods.

6. The integrated traveling wave tube according to claim 5, characterized in that: The clamping rod is formed with a positioning notch, and the limiting cylinder is formed with a positioning protrusion inserted into the positioning notch.

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