阅读说明：本技术 一种一体式行波管 (Integral type travelling wave tube ) 是由 耿复 高志强 马天军 张欣玲 王书峰 褚立人 于 2020-12-31 设计创作，主要内容包括：本发明涉及行波管领域,特别涉及一种一体式行波管,包括电子枪和收集极、连接所述电子枪、收集极的管壳,行波管还包括两段螺旋线、至少三个夹持杆,两螺旋线同轴靠拢后,各夹持杆绕螺旋线的周向间隔设置,且各夹持杆夹持两螺旋线后形成内置件,管壳能够热胀变形,以使得管壳热胀后内置之间能够放入管壳的内腔,管壳冷却收缩后,管壳将夹持杆抵紧螺旋线。本发明可以通过多个夹持杆将两段螺旋线夹持组合后形成内置件,由于夹持杆的限制,有利于控制两段螺旋线的同轴度,而且,在管壳外侧将两段螺旋线组装到一起,可以便于控制两段螺旋线的相对角度和相对位置,避免了现有技术中因为需要再次连接两端管壳导致的两端螺旋线位置偏差。(The invention relates to the field of travelling wave tubes, in particular to an integrated travelling wave tube which comprises an electron gun, a collector and a tube shell connected with the electron gun and the collector, and further comprises two sections of spiral lines and at least three clamping rods, wherein after the two spiral lines are coaxially close, the clamping rods are arranged at intervals around the circumferential direction of the spiral lines, the clamping rods clamp the two spiral lines to form a built-in part, the tube shell can thermally expand and deform, so that the built-in part of the tube shell can be placed into an inner cavity of the tube shell after the tube shell is thermally expanded, and after the tube shell is cooled and contracted, the clamping rods are abutted against the spiral lines by the tube shell. The invention can clamp and combine two sections of spiral lines through a plurality of clamping rods to form the built-in part, is favorable for controlling the coaxiality of the two sections of spiral lines due to the limitation of the clamping rods, and can be convenient for controlling the relative angle and the relative position of the two sections of spiral lines by assembling the two sections of spiral lines together outside the pipe shell, thereby avoiding the position deviation of the two spiral lines caused by connecting the pipe shells at the two ends again in the prior art.)

1. The utility model provides an integral type travelling wave tube, includes electron gun and collector, connection the tube of electron gun, collector, its characterized in that, the tube is compound tube, travelling wave tube still includes two sections helices, at least three supporting rod, two the coaxial back of drawing close of helix, each the supporting rod winds the circumference interval of helix sets up, and each the supporting rod centre gripping is two form built-in behind the helix, the tube can the thermal expansion warp, so that after the tube thermal expansion can put into between the built-in the inner chamber of tube, after the tube cooling shrinkage, the tube will the supporting rod supports tightly the helix.

2. The one-piece traveling-wave tube according to claim 1, wherein the difference between the outer diameter of the insert and the inner diameter of the tube housing is 0.05mm or more and 0.2mm or less.

3. The one-piece traveling-wave tube according to claim 1, wherein the number of the clamping rods is three.

4. A unitary traveling wave tube according to claim 1, wherein said tube housing is a unitary tube housing.

5. An integral traveling wave tube according to claim 1, wherein the tube shell comprises two sub-tube shells, and the two sub-tube shells are welded.

6. An integral traveling wave tube according to claim 1, wherein a positioning member is provided between each of the clamping rods for separating the two helical wires, and the helical wires are abutted against the positioning member.

7. The one-piece traveling-wave tube according to claim 6, wherein the positioning member is a protrusion integrally formed on the clamping rod.

8. The integral traveling wave tube according to claim 6, wherein the positioning member is a limiting cylinder clamped between the clamping rods.

9. The one-piece traveling-wave tube according to claim 8, wherein the clamping rod is formed with a positioning slit, and the restraining barrel is formed with a positioning protrusion inserted into the positioning slit.

Technical Field

The invention relates to the field of traveling wave tubes, in particular to an integrated traveling wave tube.

Background

The traveling wave tube is a microwave power amplifier which is widely applied, and is widely applied to the fields of radars, microwave remote sensing and the like. The traveling wave tube comprises an emitter, a tube shell and a collector, and a spiral line is arranged in the tube shell to amplify radio frequency signals. Wherein the installation accuracy of helix in the tube shell is traveling wave tube job stabilization's key place, and at present, current traveling wave tube is when the equipment, equally divide into two segmentation structures with tube shell and helix, packs helix and supporting rod into respectively in two tube shells, welds two sections tube shells again. By adopting the mode, the relative position precision of the two spiral lines is not easy to control when the two tube shells are assembled again.

Disclosure of Invention

In order to solve the technical problems, the invention provides an integrated traveling wave tube, which can clamp and combine two sections of spiral lines through a plurality of clamping rods to form an internal part, is favorable for controlling the coaxiality of the two sections of spiral lines due to the limitation of the clamping rods, and can be convenient for controlling the relative angles and the relative positions of the two sections of spiral lines by assembling the two sections of spiral lines together outside a tube shell, thereby avoiding the position deviation of the two spiral lines caused by connecting the tube shells at the two ends again in the prior art.

In order to solve the problems, the invention provides an integrated traveling wave tube which comprises an electron gun, a collector and a tube shell connected with the electron gun and the collector, wherein the tube shell is a composite tube shell, the traveling wave tube further comprises two spiral lines and at least three clamping rods, after the two spiral lines are coaxially close, the clamping rods are arranged at intervals around the circumferential direction of the spiral lines, the clamping rods clamp the two spiral lines to form a built-in part, the tube shell can thermally expand and deform, so that an inner cavity of the tube shell can be placed between the built-in parts after the tube shell is thermally expanded, and after the tube shell is cooled and contracted, the clamping rods abut against the spiral lines.

Further, the difference between the outer diameter of the built-in part and the inner diameter of the pipe shell is more than or equal to 0.05mm and less than or equal to 0.2 mm.

Furthermore, the number of the clamping rods is three.

Further, the pipe shell is an integrated pipe shell.

Furthermore, the tube shell comprises two sub-tube shells, and the two sub-tube shells are welded.

Furthermore, a positioning piece for separating the two spiral lines is arranged between the clamping rods, and the spiral lines are abutted to the positioning piece.

Further, the positioning member is a protrusion integrally formed on the clamping rod.

Furthermore, the positioning piece is a limiting cylinder clamped between the clamping rods.

Furthermore, a positioning opening is formed on the clamping rod, and a positioning bulge inserted into the positioning opening is formed on the limiting cylinder.

The integral traveling wave tube has the advantages that the two spiral lines can be clamped and combined through the clamping rods to form the built-in part, the coaxiality of the two spiral lines can be controlled due to the limitation of the clamping rods, the two spiral lines are assembled together outside the tube shell, the relative angle and the relative position of the two spiral lines can be controlled conveniently, and the position deviation of the spiral lines at two ends caused by the fact that the tube shells at two ends need to be connected again in the prior art is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic side sectional structure diagram according to an embodiment of the present invention.

Fig. 2 is a partially enlarged schematic structural view of a portion a in the embodiment shown in fig. 1.

Fig. 3 is a side sectional structural view of fig. 1.

Fig. 4 is a schematic structural view of another embodiment of the present application at a location between two spiral lines.

Wherein: 1. a pipe shell; 2. a built-in part; 201. a helical line; 202. a clamping rod; 3. a protrusion; 4. a limiting cylinder; 5. and (6) positioning the notch.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected to each other by the intermediate structure but connected to each other by the connecting structure to form a whole. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the invention, as shown in fig. 1-4, an integrated traveling wave tube is provided, which includes an electron gun, 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, the traveling wave tube further includes two spiral lines 201 and at least three clamping rods 202, after the two spiral lines 201 are coaxially closed, the clamping rods 202 are arranged at intervals around the circumference of the spiral line 201, and the clamping rods 202 clamp the two spiral lines 201 to form a built-in part 2, the tube shell 1 can be thermally expanded and deformed, so that after the tube shell 1 is thermally expanded, the built-in part can be placed into an inner cavity of the tube shell 1, and after the tube shell 1 is cooled and contracted, the clamping rods 202 are abutted against the spiral lines 201 by the tube shell 1.

When the travelling wave tube is assembled, the two spiral lines 201 can be clamped and combined through the plurality of clamping rods 202 to form the built-in part 2, in the process, due to the limitation of the clamping rods 202, the coaxiality of the two spiral lines 201 can be controlled conveniently, in addition, the two spiral lines 201 are assembled together outside the tube shell 1, the relative angle and the relative position of the two spiral lines 201 can be controlled conveniently, and the position deviation of the two spiral lines 201 caused by the fact that the tube shells 1 at two ends are required to be connected again in the prior art is avoided. Because the position of both ends helix can accurate control, consequently can improve the isolation of input helix 201 and output helix 201 after the equipment of tube 1, and then great improvement travelling wave tube job stabilization nature. In addition, when the assembly, the urgent need with the assembly in proper order helix 201 and clamping rod 202 can, simplified the assembly process of helix 201 and clamping rod 202, when the equipment, only need with the heating of tube 1 for place built-in components 2 in tube 1 after the thermal expansion of tube 1 can, consequently also greatly simplified the process of equipment.

The invention is further optimized in that the difference between the outer diameter of the insert 2 and the inner diameter of the housing 1 is greater than or equal to 0.05mm and less than or equal to 0.2 mm. Through the arrangement, the tube shell 1 can have a good fixing effect when the built-in part 2 is fixed.

In the embodiment shown in fig. 1, more specifically, three clamping rods 202 are provided.

Preferably, regarding the structure of the cartridge 1, the cartridge 1 is an integral cartridge 1. Adopt the shell 1 of whole section formula, can keep the wholeness of shell 1, easily guarantee the cooperation precision between shell 1 and the helix 201, make shell 1 can have higher coaxial precision with the helix easily, and then make the center of the magnetic part of shell and the center of helix have higher axiality, still easily process shell 1.

Alternatively, in an alternative embodiment, the cartridge 1 comprises two sub-cartridges 1, the two sub-cartridges 1 being welded. When two sub-tube shells 1 are adopted, two ends of the built-in part 2 can be respectively installed in the two sub-tube shells 1 during assembly, and the two sub-tube shells 1 are close to each other and are in welded connection. Therefore, the input electrode and the output electrode on the two segments of sub-tube shells can be respectively aligned with the spiral line at the corresponding positions.

In order to further ensure the precision of the invention during assembly, a positioning element for separating the two spiral lines 201 is arranged between the clamping rods 202, and the spiral lines 201 are abutted with the positioning element. Through having set up the setting element at clamping rod 202, can be when assembly helix 201, through setting element assistance-localization real-time helix 201, and then reduce the degree of difficulty when assembling location helix 201, can improve helix 201's positioning accuracy.

With regard to the structure of the positioning member, in a preferred embodiment, as shown in fig. 1, the positioning member is a projection 3 integrally formed with the clamping bar 202. Therefore, when the clamping rod 202 is machined, the positioning piece can be conveniently machined, and the position precision of the positioning piece is easily ensured.

Alternatively, the positioning element may be a limiting cylinder 4 clamped between the clamping rods 202 as shown in the embodiment shown in fig. 4. As shown in the figure, through having set up a location section of thick bamboo for when fixing a position spiral line 201, to a location section of thick bamboo circumference with the relative position of spiral line 201 do not have the requirement, reduced the required precision to the installation equipment of setting element circumference.

For the installation of the limiting cylinder 4, in the illustrated embodiment, more specifically, the clamping rod 202 is formed with a positioning slit 5, and the limiting cylinder 4 is formed with a positioning protrusion inserted into the positioning slit 5. As shown in the figures, in the illustrated embodiment, the side of the limiting cylinder 4 forms a positioning protrusion, so that the exposing of the limiting cylinder 4 in the inner section of the spiral line 201 can be reduced on the basis that the limiting cylinder 4 has a certain thickness.

Of course, for alternative embodiments, the positioning protrusion may be directly configured as a protrusion protruding from the surface side of the limiting cylinder 4.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. 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.