High power microwave vacuum tube cathode and filament connectors

Abstract

The present invention belongs to the field of plasma heating, and is specifically a high-power microwave vacuum tube cathode and filament connector, comprising a base support structure at the bottom, a wire cover arranged at the upper end of the base support structure, a cathode connector arranged at the upper end of the wire cover, and a filament connector arranged inside the cathode connector, and a support spring is arranged between the bottom of the cathode connector and the base support structure; an insulating sleeve is arranged at the bottom of the outer side of the filament connector. The device can ensure the connection between the high-power microwave vacuum tube and the high-voltage line, ensure good high-voltage electrical contact, and is easy to disassemble and assemble. The structural design of the cathode and filament connector eliminates the influence of this error, ensuring that the cathode and filament interface of the high-power microwave vacuum tube are accurately docked with the connector and have good electrical contact.

Description

Technical Field

[0001] The invention belongs to the field of plasma heating, and in particular relates to a cathode and filament connector of a high-power microwave vacuum tube of a low-noise heating device. Background Art

[0002] High-power microwave vacuum tube is a high-power microwave wave source with an output power of megawatts, a cathode high voltage of tens of kilovolts, a filament power of hundreds of kilowatts, and a tube weight of tons. In the low-noise heating system of a fusion device, a foreign 500kW high-power microwave vacuum tube is used. The installation and commissioning of the vacuum tube are carried out domestically. In order to facilitate the installation and commissioning of the high-power microwave tube, the high-voltage wire cannot be directly welded to the cathode and filament interface of the vacuum tube. Therefore, a connector needs to be designed to complete the connection between the high-power microwave vacuum tube and the high-voltage wire to ensure good high-voltage electrical contact and easy disassembly and assembly of the tube.

[0003] Since the weight of the high-power microwave vacuum tube reaches tons, it can only be installed by crane. In order to ensure safety, the cathode and filament connectors must be fixed in the tube holder of the high-power microwave tube and firmly connected to the cathode and filament high-voltage wires. When the high-power microwave vacuum tube is installed on the tube holder, the cathode and filament interface of the vacuum tube must be docked with the cathode and filament connector, so as to complete the connection between the vacuum tube and the cathode and filament high-voltage wires.

[0004] During the installation process, the horizontal position of the microwave tube is adjusted by the trolley to align the cathode and filament interface with the horizontal position of the cathode and filament connector. Due to the minimum step size of the trolley, it is difficult to align completely, and there is generally an error of about 0.2 cm. Therefore, the design of the cathode and filament connector must be able to eliminate this error, so that when the trolley vertically places the microwave tube on the tube holder, the cathode and filament interface of the microwave tube can be accurately connected with the connector. This connector plays a key role in the installation and power supply of high-power microwave vacuum tubes. Summary of the invention

[0005] The object of the present invention is to provide a high-power microwave vacuum tube cathode and filament connector, which has a simple structure, is easy to install and has reliable electrical contact.

[0006] The technical solution of the present invention is as follows:

[0007] A high-power microwave vacuum tube cathode and filament connector comprises a base support structure at the bottom, a wire cover arranged at the upper end of the base support structure, a cathode connector arranged at the upper end of the wire cover and a filament connector arranged inside the cathode connector, and a support spring is arranged between the bottom of the cathode connector and the base support structure; an insulating sleeve is arranged at the outer bottom of the filament connector.

[0008] The cathode connector is a cylindrical structure with a certain wall thickness, the inner bottom is a stepped structure, and a boss is processed at the lower end of the outer wall of the cylinder. A terminal head is installed at the bottom of the cathode connector.

[0009] The lower end of the side wall of the cathode connector is processed with a threaded hole, and the corresponding position of the wire cover is provided with a fixing hole, and the cathode connector and the wire cover are fixed by the fixing hole, the threaded hole and the screw.

[0010] A plurality of spring sheets extending outwards are evenly arranged around the outer edge of the cylinder at the upper end of the cathode connector.

[0011] The filament connector comprises two parts, one part is a cylinder with a certain wall thickness at the top, and the other part is a cylindrical structure at the bottom, and the outer diameter of the cylinder is smaller than the outer diameter of the cylinder.

[0012] A plurality of spring sheets extending outwards are evenly arranged around the outer edge of the top of the filament connector.

[0013] The insulating sleeve is in a stepped shape, and its shape matches the stepped structure of the bottom of the cathode connector.

[0014] The insulating sleeve is made of polytetrafluoroethylene material.

[0015] The base support structure comprises a base and a spring seat fixed on the base, the spring seat is cylindrical, and the spring seat is located outside the support spring.

[0016] One end of the support spring is welded to the upper surface of the base of the base support structure, and the other end is welded to the bottom of the cathode connection structure.

[0017] The remarkable effects of the present invention are as follows:

[0018] This device can ensure the connection between the high-power microwave vacuum tube and the high-voltage line, ensure good high-voltage electrical contact, and be easy to disassemble and assemble. In addition, during the process of hoisting the trolley, when the trolley has a minimum step error and it is difficult to fully align, the structural design of the cathode and filament connector eliminates the influence of this error, ensuring that the cathode and filament interface of the high-power microwave vacuum tube are accurately docked with the connector and have good electrical contact.

[0019] The support spring is designed to fine-tune the vertical and horizontal positions of the cathode and filament connection structure through stretching and horizontal swinging, eliminating the alignment error between the high-power microwave vacuum tube interface and the connector caused by the minimum step diameter of the vehicle;

[0020] The spring sheet of the filament connector completes the good electrical contact between the filament connection structure and the high-power microwave vacuum tube filament interface. At the same time, the filament high-voltage wire is fixed through the terminal head at the bottom of the filament connection structure, thereby completing the connection between the filament high-voltage wire and the cathode filament interface of the high-power microwave vacuum tube, so that the vacuum tube filament interface and the connector are in full electrical contact. At the same time, the deformation of the spring better eliminates the influence of position changes.

[0021] The spring sheet of the cathode connector completes good electrical contact between the cathode connection structure and the cathode interface of the high-power microwave vacuum tube. At the same time, the cathode high-voltage wire is fixed through the terminal head at the bottom of the cathode connection structure, thereby completing the connection between the cathode high-voltage wire and the cathode interface of the high-power microwave vacuum tube, so that the cathode interface of the vacuum tube and the connector are in full electrical contact. At the same time, the deformation of the spring better eliminates the influence of position changes.

[0022] The wire cover is used to prevent the cathode power supply wire and the filament power supply wire from contacting other wires and other materials on the high-power microwave vacuum tube socket at the connector connection.

[0023] The base support structure has a spring cover to limit the horizontal deformation of the spring within a reasonable range, thereby avoiding the problem that the high-power microwave vacuum tube cannot be connected to the connector due to excessive horizontal deformation of the spring when the high-power microwave vacuum tube is hoisted by the trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the cathode and filament connector of a high-power microwave vacuum tube;

[0025] Figure 2a is a schematic diagram of the cathode connector;

[0026] Figure 2b for Figure 2a Top view;

[0027] Figure 3a This is a schematic diagram of the filament connector;

[0028] Figure 3b for Figure 3a Top view;

[0029] Figure 4a This is a schematic diagram of the base support structure;

[0030] Figure 4b for Figure 4a Top view;

[0031] Figure 5 This is a schematic diagram of the wire cover hole;

[0032] In the figure: 1. Filament connector; 2. Cathode connector; 3. Support spring; 4. Wire cover; 5. Base support structure; 6. Threaded hole; 7. Terminal head; 8. Spring sheet; 9. Insulating sleeve; 10. Fixing hole; 11. Threading hole; 501. Base; 502. Spring seat. DETAILED DESCRIPTION

[0033] The present invention will be further described below through the accompanying drawings and specific implementation methods.

[0034] like Figure 1 As shown, the high-power microwave vacuum tube cathode and filament connector includes a base support structure 5 at the bottom, a wire cover 4 installed on the upper end of the base support structure 5, a cathode connector 2 installed on the upper end of the wire cover 4 and a filament connector 1 installed inside the cathode connector 2, and a support spring 3 is installed between the bottom of the cathode connector 2 and the base support structure 5.

[0035] like Figure 2a and Figure 2b As shown, the cathode connector 2 is a cylindrical structure with a certain wall thickness, the inner bottom is processed into a stepped structure with a gradually decreasing inner diameter, and a boss is processed at the lower end of the outer wall of the cylinder. A terminal 7 is installed at the bottom of the cathode connector 2, a threaded hole 6 is processed at the lower end of the side wall, and a plurality of spring sheets 8 extending outward are evenly installed around the outer edge of the cylinder at the upper end of the cathode connector 2.

[0036] The cathode connector 2 is mounted on the upper end of the wire cover 4 through the boss, and the cathode connector 6 and the wire cover 4 are fixedly connected through the threaded hole 6 by means of screws or the like.

[0037] The function of the spring sheet 8 is to achieve good electrical contact between the cathode of the high-power microwave vacuum tube and the cathode connector. When the device is docked with the cathode interface of the vacuum tube, the spring sheet is deformed and compressed to achieve full electrical contact between the cathode interface of the vacuum tube and the connector.

[0038] The terminal head 7 is a nut which can fix the cathode high voltage power supply line to the connector.

[0039] like Figure 3a and Figure 3bAs shown, the filament connector 1 includes two parts, one part is a cylinder with a certain wall thickness at the top, and the other part is a cylindrical structure at the bottom, and the outer diameter of the cylinder is smaller than the outer diameter of the cylinder. A number of spring sheets 8 extending outward are evenly installed around the outer edge of the top of the upper cylinder. When the vacuum tube filament interface is docked with the filament connection structure, the spring sheet 8 is deformed and compressed, so that the vacuum tube filament interface and the connector are in full electrical contact. An insulating sleeve 9 is tightly installed on the outside of the cylindrical structure and the outside of the bottom of the cylinder. The insulating sleeve 9 is stepped, and its shape is consistent with the stepped structure at the bottom of the above-mentioned cathode connector 2. A terminal head 7 is also installed at the bottom of the filament connector 1 for connecting the filament high-voltage power supply line.

[0040] The insulating sleeve 9 is made of polytetrafluoroethylene material and is used for high voltage isolation between the filament voltage and the cathode voltage.

[0041] As shown in FIG4 , the base support structure 5 includes a base 501 and a spring seat 502 fixed on the base 501. The spring seat 502 is cylindrical, and a screw hole is processed on the base 501. The base 501 is fixedly mounted on the tube seat by screws. The spring cover 502 is located outside the support spring 3, and plays a role in limiting the support spring 3, so as to avoid the problem that the high-power microwave vacuum tube cannot be connected to the connector due to excessive deformation of the support spring level 3 when the high-power microwave vacuum tube is hoisted by the trolley.

[0042] like Figure 5 The wire cover 4 is provided with a fixing hole 10 and a threading hole 11. The fixing hole 10 corresponds to the threaded hole 6 of the cathode connector 2 and is used to fix the cathode connector 2 and the wire cover 4. The threading hole 11 is used to introduce the cathode power supply wire and the filament power supply wire.

[0043] The support spring 3 can be connected by welding. One end is welded to the upper surface of the base 501 of the base support structure 5, and the other end is welded to the bottom of the cathode connection structure 2. The support spring 3 can be stretched in the vertical direction and swing and deform at the same time, which can eliminate the alignment error caused by excessive step diameter when the aerial vehicle hoistes the high-power microwave vacuum tube.

Claims

1. A high-power microwave vacuum tube cathode and filament connector, characterized in that: The invention comprises a base support structure (5) at the bottom, a wire cover (4) arranged at the upper end of the base support structure (5), a cathode connector (2) arranged at the upper end of the wire cover (4), and a filament connector (1) arranged inside the cathode connector (2), and a support spring (3) is arranged between the bottom of the cathode connector (2) and the base support structure (5); an insulating sleeve (9) is arranged at the outer bottom of the filament connector (1); The cathode connector (2) is a cylindrical structure with a certain wall thickness, the inner bottom is a stepped structure, and a boss is processed at the lower end of the outer wall of the cylinder. A terminal head (7) is installed at the bottom of the cathode connector (2); The filament connector (1) comprises two parts, one part is a cylinder with a certain wall thickness at the top, and the other part is a cylindrical structure at the bottom, and the outer diameter of the cylinder is smaller than the outer diameter of the cylinder.

2. The high power microwave vacuum tube cathode and filament connector according to claim 1, characterized in that: The cathode connector (2) has a threaded hole (6) processed at the lower end of the side wall, and the wire cover (4) has a fixing hole at a corresponding position. The cathode connector (2) and the wire cover (4) are fixed by the fixing hole, the threaded hole (6) and the screw.

3. The high power microwave vacuum tube cathode and filament connector according to claim 2, characterized in that: A plurality of spring sheets (8) extending outwards are evenly arranged around the outer edge of the cylinder at the upper end of the cathode connector (2).

4. The high power microwave vacuum tube cathode and filament connector according to claim 3, characterized in that: A plurality of spring sheets (8) extending outwards are evenly arranged around the outer edge of the top of the filament connector (1).

5. The high power microwave vacuum tube cathode and filament connector according to claim 1, characterized in that: The insulating sleeve (9) is stepped, and its shape matches the stepped structure of the bottom of the cathode connector (2).

6. The high power microwave vacuum tube cathode and filament connector according to claim 5, characterized in that: The insulating sleeve (9) is made of polytetrafluoroethylene material.

7. The high power microwave vacuum tube cathode and filament connector according to claim 1, characterized in that: The base support structure (5) comprises a base (501) and a spring seat (502) fixed on the base (501); the spring seat (502) is cylindrical; and the spring seat (502) is located outside the support spring (3).

8. The high power microwave vacuum tube cathode and filament connector according to claim 1, characterized in that: One end of the support spring (3) is welded to the upper surface of the base (501) of the base support structure (5), and the other end is welded to the bottom of the cathode connector (2).

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