JPH07296736A - Porous microwave tube and its manufacture - Google Patents

Abstract

PURPOSE:To provide such a porous microwave tube and its manufacture the size error of a porous resonator can be reduced and the manufacture cost can be also reduced. CONSTITUTION:A porous microwave tube is so formed that outer cylinders 3, 6 constituting an outer wall of a porous resonator 9 are vertically divided into two beforehand and a resonator diaphragm 4 is surrounded thereby so as to be integrally and airtightly contacted. Characteristics of its manufacture are that the diaphragm 4 formed by combining a plurality of inside cylinders 5 together is mounted on one of the two-divided parts beforehand and the other of the two-divided parts is combined together and after that respective parts to be contacted are airtightly contacted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-cavity microwave tube and a method for manufacturing the same.

[0002]

2. Description of the Related Art A conventional multi-cavity klystron is shown in FIG.
As shown in FIG. 1, the disks 1, 2, and 14 with the drift tubes 11, 12, and 13 are axially stacked and manufactured. Further, each component constitutes a water circuit 15 for cooling the drift tube and the cavity resonator 9 with water.

[0003]

Since the conventional multi-cavity type microwave tube is manufactured by stacking the parts in the axial direction, a manufacturing error of the parts in the axial direction is added to cause a large error. There is a disadvantage that the size of the cavity resonator and the distance between the cavity resonators become large. Also,
There is a problem that the cutting cost of each part is complicated and the manufacturing cost becomes high.

The present invention eliminates such inconvenience,
It is an object of the present invention to provide a multi-cavity microwave tube and a method for manufacturing the same, which can reduce the manufacturing cost while reducing the error in the dimensions of the cavity resonator and the distance between them.

[0005]

According to the present invention, an outer cylindrical body forming an outer wall of a cavity resonator is vertically divided into two parts, which surround a resonator partition wall and are hermetically bonded together. It is a cavity type microwave tube. In addition, the manufacturing method is characterized in that a partition wall in which a plurality of inner cylinders are combined is attached to one of the outer cylinders that have been divided into two in advance, and the other of the divided outer cylinders is combined together, and then each The point is to join the parts to be joined airtightly.

[0006]

According to the present invention, since each part has a simple shape, it is possible to reduce a dimensional error in a semi-finished product.
Therefore, the dimensions of the cavity resonator can be configured with high accuracy.
Further, the parts can be easily manufactured, the assembling time can be reduced, and the manufacturing cost can be reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment in which the present invention is applied to a multicavity klystron will be described below with reference to the drawings. 1 and 2
In the embodiment shown in Fig. 3, the outer half cylinder 3 made of copper, which is an outer wall of the cavity resonator prepared in advance as a component divided in two in the axial direction, is used.
Slit 3 for fitting the partition wall of the cavity resonator at the predetermined position
a is formed and a plurality of copper partition walls 4 to which a copper inner cylinder 5 serving as a drift tube is coupled is attached to each slit 3a, and the other outer half cylinder 6 is covered, and each contact portion 10 is covered. Airtight brazing or welding. The space defined by the partition walls 4 and 4 becomes the cavity resonators 9 and 9.

The outer half cylinders 3 and 6 are provided with vertical holes 7 and horizontal holes 8, which form a water circuit for water cooling of the cavity resonator 9 and the drift tube 5. The present invention can also be applied to a cavity-coupled traveling wave tube or the like, in which case a coupling hole is formed in each partition surface.

[0009]

As described above, according to the present invention,
It is possible to reduce the error in the size of the cavity resonator and the mutual distance between the resonators, and to reduce the manufacturing cost. If necessary, the water circuit can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a main part of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state during the assembling.

FIG. 3 is a vertical cross-sectional view showing a cavity portion of a conventional multi-cavity klystron.

[Explanation of symbols]

 9 ... Cavity resonator 3, 6 ... Outer cylinder 5 ... Inner cylinder 4 ... Partition

Claims (2)

[Claims] 1. A plurality of partition walls are provided at predetermined intervals inside an outer cylindrical body that is an outer wall of a cavity resonator, and an inner cylindrical body that extends in an axial direction and serves as a drift tube is joined to a central hole of each partition wall. In the multi-cavity microwave tube configured as described above, the outer cylindrical body is vertically divided into two and surrounds the partition wall so as to be hermetically bonded together and also to the partition wall. Cavity type microwave tube. 2. An outer cylinder which is an outer wall of a cavity resonator is divided into two parts in advance, a partition wall formed by combining a plurality of inner cylinders is attached to one of the two divided parts, and the other two divided parts are attached. A method of manufacturing a multi-cavity microwave tube, which comprises combining the above combined structures together, and then hermetically bonding respective portions to be bonded.