JPH05325800A - Conduction cooling type multistage collector - Google Patents

Abstract

PURPOSE:To simplify the contruction and the assembling process of a conduction cooling type multistage collector used for an electron beam tube such as a traveling wave tube. CONSTITUTION:A first collector electrode 1, a second collector electrode 2 and a third collector electrode 3 are fixed respectively on soldering parts 7 of ring-shaped insulators 4 which are fixed to each other by a laminated soldering part 11 to form a vacuum container as a multistage collector. A sealing board 10 and a lead wire 8 are fixed on the external surface of each soldering part 7 to form each power supply path. One end of the ring-shaped insulator 4 on the side of the first collector electrode 1 is fixed to a delay circuit container 5 through a collector sealing disc 6. The construction and the assembling process are simplified by forming the insulator container by applying laminate soldering fixing process to each of the first, second and third collector electrodes 1, 2 and 3 in form of a ring-shaped insulator 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conduction cooling type multistage collector, and more particularly to a conduction cooling type multistage collector used in an electron beam tube such as a traveling wave tube.

[0002]

2. Description of the Related Art A collector in a traveling wave tube has a role of recovering energy of an electron beam which has finished interacting with a high frequency in a delay circuit. By operating the collector potential lower than the slow-wave circuit potential, the power consumed as heat loss in the collector can be reduced.
The multi-stage collector attempts to increase the efficiency of the traveling wave tube by minimizing this heat loss.

FIG. 2 is a sectional view of an example of a conventional conduction cooling type multi-stage collector.

The conventional conduction cooling type multistage collector has three stages.
It is composed of steps. The first collector electrode 1, the second collector electrode 2, and the third collector electrode 3 are all insulator envelopes 1.
It is fixed to the brazing part 7 of 2. Insulator envelope 12
Are fixed to the delay circuit envelope 5 via the collector sealing plate 6. Further, the first, second, and third collector electrodes 1, 2, and 3 are connected to the sealing plate 10 through the electrode holes 9 by the brazing portion 7, and the lead wire 8 is connected from the sealing plate 10. Is present and serves as a power feeding path to each of the first, second, and third collector electrodes 1, 2, and 3.

[0005]

In the conventional conduction cooling type multi-stage collector described above, the insulator envelope has an integral structure, which makes the structure complicated and difficult to manufacture. Moreover, the number of brazings at the time of assembly is large. The problem is that the process becomes complicated, such as an increase in the number. In particular, the problem becomes more remarkable as the number of stages of the collector electrode increases, and a traveling-wave tube that is required to have high efficiency and high reliability, such as for mounting on a satellite, is a big net for design.

It is an object of the present invention to provide a conduction cooling type multi-stage collector which is simple in structure, simple in assembly, easy to manufacture and highly reliable.

[0007]

SUMMARY OF THE INVENTION The present invention is a conductive enclosure having a plurality of collector electrodes and an insulator envelope that electrically insulates and secures each of the plurality of collector electrodes to form a vacuum envelope. In the cooling type multi-stage collector, the insulator envelope is divided into ring-shaped insulators corresponding to each of the plurality of collector electrodes and laminated and joined to form a vacuum envelope, which corresponds to each ring-shaped insulator. The collector electrode is fixed.

[0008]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a sectional view of an embodiment of the present invention.

As shown in FIG. 1, the first collector electrode 1,
The second collector electrode 2 and the third collector electrode 3 are each fixed to the brazing part 7 of the ring-shaped insulator 4, and each ring-shaped insulator 4 is fixed by the laminated brazing part 11 and is kept outside the vacuum. It becomes an enclosure and forms a multi-stage collector.

The first, second, and third collector electrodes 1, 2, and 3 pass through the electrode holes 9 by the brazing portion 7 and the sealing plate 1 is formed.
0 and the lead wire 8 extends from the sealing plate 10 and serves as a power supply path to the first, second, and third collector electrodes 1, 2, and 3. The end of the ring-shaped insulator 4 on the side of the first collector electrode 1 is fixed to the slow wave circuit envelope 5 via the collector sealing plate 6. In this embodiment, the insulator enclosure 12 of FIG.
By dividing each of the collector electrodes 1, 2, and 3 as a ring-shaped insulator 4 and fixing the layers by brazing, the structure is simplified and manufacturing is facilitated, and the assembly process is also simplified. In particular, the effect is greater as the number of collector electrode steps increases.

[0012]

As described above, the conduction cooling type multi-stage collector according to the present invention has a structure in which an insulator envelope having a conventional integral structure is fixed to each collector electrode as a ring-shaped insulator by brazing. Is simplified, manufacturing is facilitated, and the assembly process is also simplified.
In particular, the effect is great for a traveling-wave tube mounted on a satellite, which has a large number of collector electrodes and requires high reliability.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view of an example of a conventional conduction cooling type multi-stage collector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st collector electrode 2 2nd collector electrode 3 3rd collector electrode 4 Ring insulator 5 Slow wave circuit envelope 6 Collector sealing plate 7 Brazing part 8 Lead wire 9 Electrode hole 10 Sealing plate 11 Laminating brazing Part 12 Insulator envelope

Claims (1)

[Claims] 1. A conduction cooling type multi-stage collector, comprising: a plurality of collector electrodes; and an insulator envelope which electrically insulates and fixes each of the plurality of collector electrodes to form a vacuum envelope. The body envelope is divided into ring-shaped insulators corresponding to each of the plurality of collector electrodes and laminated and bonded to form a vacuum envelope, and the collector electrodes corresponding to the ring-shaped insulators are fixed. Characteristic conduction cooling type multi-stage collector.