Helix traveling wave tube magnetic focusing system assembly method
An assembly method and technology of traveling wave tubes, applied in the manufacture of electrode systems, manufacture of discharge tubes/lamps, electrical components, etc., can solve problems such as increase in transverse magnetic field value, change in axial magnetic field value, and periodic inhomogeneity of the magnetic system , to achieve the effects of reduced transverse magnetic field, good consistency, and increased electron pass rate
Inactive Publication Date: 2011-06-22
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is that, in view of problems such as the inhomogeneity of the magnetic system period, the change of the axial magnetic field value and the increase of the transverse magnetic field value in the existing assembly technology, it is necessary to innovate an assembly method to reduce the Influence of small magnetic system assembly on the above problems
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[0015] Reference figure 1 , Represents a schematic diagram of the opposite sex plug. ΦD1 and φD3 represent the inner diameter and outer diameter of the heterosexual plug, respectively, and ΦD2 represents the initial diameter of the tapered slope. Reference figure 2 , Represents the schematic diagram of the notched copper sheet. In the figure, L2 is the notch width.
[0016] The feature of the present invention is to use several groups of heterosexual plugs with different sizes (the heterosexual plugs are in a circular ring shape, and the taper changes from the inner ring to the outer ring. The ring is equally divided into two halves, such as figure 1 (Shown), when there are 5-6 magnetic rings left in the assembly of the magnetic system, insert the plug piece into the pole shoe to replace the unassembled magnetic ring, replace the corresponding plug piece according to the tightness of the whole system, and install the plug piece The size determines the difference between the le...
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The invention relates to a helix traveling wave tube magnetic focusing system assembly method which belongs to the field of microwave vacuum electronic devices. Along the direction of a helix traveling wave tube axis, magnetic rings and pole pieces are periodically and alternatively lined into a focusing system length; semi-circular heterogeneous patches corresponding to the size of the magnetic rings serve as transitional patches; the heterogeneous patches are inserted between the pole pieces in parallel with the direction of the spacing between the magnetic rings to replace unassembled magnetic disks; and the corresponding heterogeneous patches are replaced according to the tightness of the whole set of system, the number of required copper sheets or the total thickness of the ground magnetic disks are calculated, and the copper sheets with gaps are put between the assembled magnetic rings and the pole pieces. After a magnetic system is assembled through the method, the internal electronic through rate of the devices is improved.
Description
Technical field [0001] The invention belongs to the field of microwave vacuum electronic devices, and particularly relates to a method for adjusting and assembling a magnetic focusing system of a spiral traveling wave tube. Background technique [0002] The magnetic focusing system of the spiral traveling wave tube is composed of a certain number of pole shoes, connecting sleeves and magnetic ring which are sleeved outside the casing of the traveling wave tube. The pole shoe is sleeved outside the traveling wave tube shell; the connecting sleeve is used as a part supporting the magnetic ring to ensure the concentricity between the outer diameter of the tube shell and the inner diameter of the magnetic ring. It can be sleeved on the tube shell or divided into two halves Then assemble with the magnetic ring. The magnetic ring is first divided into two halves and installed between two adjacent pole shoes after the exhaust process. The thickness of the pole piece and the magnetic r...
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IPC IPC(8): H01J9/00
Inventor 吴华夏贺兆昌张文丙朱刚李宾宾邵海根
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE