CN202550090U

CN202550090U - High voltage adaptor for traveling wave tube amplifier

Info

Publication number: CN202550090U
Application number: CN 201220074044
Authority: CN
Inventors: 白德鹏; 李红然; 范培云; 刘炳耀; 刘智伟
Original assignee: Xian Institute of Space Radio Technology
Current assignee: Xian Institute of Space Radio Technology
Priority date: 2012-02-29
Filing date: 2012-02-29
Publication date: 2012-11-21
Anticipated expiration: 2022-02-28

Abstract

The utility model relates to a high voltage adaptor for a traveling wave tube amplifier, comprising a front end cap, a wiring cavity, a wiring pipe, a fixed piece, an embedment cavity, a wiring board and a wire clamp, wherein the wiring cavity and the embedment cavity are respectively a non-enclosed cavity structure, the embedment cavity and the wire clamp are fixed inside the wiring cavity, the wiring board is fixed inside the embedment cavity, the wiring board and the embedment cavity are together packaged into one body through epoxy resin, the fixed piece is fixed at the outer side of the wiring cavity, the wiring pipe passes through a through hole on the fixed piece and then extends into the embedment cavity, the high voltage cable of the traveling wave tube is connected with the wiring board, the tail end of the high voltage cable shielding layer is overturned and then wraps the tail end of the wiring pipe, the high voltage wire of a traveling wave tube power supply is connected with the wiring board and fixed with the front end cap through the wire clamp, and the front end cap is invertedly connected on the outer side of the wiring cavity, and the front end cap and the fixed piece together seal the wiring cavity. The high voltage adaptor for a traveling wave tube amplifier has the characteristics of being simple in structure, and good in shielding performance and insulating performance.

Description

A kind of travelling-wave tube amplifier high pressure adapter

Technical field

The utility model belongs to the microwave communication field, relates to a kind of travelling-wave tube amplifier high pressure adapter structure.

Background technology

Travelling-wave tube amplifier (TWTA) is made up of travelling wave tube (TWT), TWT Power (EPC) two parts, and is as shown in Figure 1.Wherein the function of travelling wave tube is to utilize its distinctive slow wave structure, and input microwave signal power is amplified; The function of TWT Power is to convert primary power source into high pressure at different levels that travelling wave tube needs, and guarantees that travelling-wave tube amplifier in time cuts off the power supply guard rows wave duct amplifier apparatus when unusual condition takes place.

The key of TWT and EPC integrating process is the reliable treatments of high pressure adapter.The high pressure adapter is the jointing of TWT high-tension cable and EPC high-voltage conducting wires.Because TWT high-tension cable and EPC generated at connector of high-voltage line voltage are dc high voltage, voltage magnitude does not wait from three, four kilovolts to six, seven kilovolts, and adopts encapsulating method to insulate usually, so the structural design of high pressure adapter must be easy to carry out the embedding processing.In addition, TWT is very responsive to the stability of the high voltage supply that EPC provides, and the TWT high-tension cable has certain-length usually, must carry out anti-electromagnetic interference design and disturb to avoid external device and environment that it is produced.Usually the TWT High-voltage Cable Design has screen, and screen one end is connected with the TWT shell, and the other end then need be handled at high pressure adapter place to guarantee that screen well contacts with the EPC shell, and TWT high-tension cable sketch map is as shown in Figure 2.

At present, the structural design of EPC and TWT high-voltage cable joint adopts high-tension cable screen and the direct-connected mode of EPC casing in the travelling-wave tube amplifier, through screw at EPC casing top.TWT high-tension cable and EPC high-voltage conducting wires directly weld the back insulation processing, do not adopt the embedding chamber.Because TWT high-tension cable and EPC high-voltage conducting wires quantity are more in the space travelling wave tube amplifier, are generally 9-11 to line, directly carrying out the insulation processing advantage after the welding is that volume is little, in light weight, and shortcoming is that process complexity is high, and the quality assurance difficulty is big, trivial operations.Simultaneously; TWT high-tension cable screen and the direct-connected mode of EPC casing require the splice insulation processing that is fixed on of screen to carry out afterwards, because the space is narrow and small, and operation inconvenience; And the screen chip that might produce in the time of trip bolt can't being cleared up after fixing, thereby introduce fifth wheel.

The utility model content

The technology of the utility model is dealt with problems and is: overcome the deficiency of prior art, providing a kind of can provide good earth and be convenient to the travelling wave tube high-tension cable and the travelling-wave tube amplifier high pressure adapter of TWT Power high-voltage conducting wires junction insulation processing for the travelling wave tube high-tension cable.

The technical solution of the utility model is: a kind of travelling-wave tube amplifier high pressure adapter comprises front end housing, wire connection cavity, wire barrel, stator, embedding chamber, terminal block and ply-yarn drill; Wire connection cavity and embedding chamber are unsealed cavity body structure, and embedding chamber and ply-yarn drill are fixed on wire connection cavity inside, and terminal block is fixed on inside, embedding chamber and together is packaged into integral body with the embedding chamber; Stator is fixed on the outside of wire connection cavity, and the through hole that wire barrel passes on the stator gos deep into to the embedding chamber, and the high voltage cable of travelling wave tube passes wire barrel and is connected with terminal block, the end of the high voltage cable shield ends upset back parcel wire barrel of travelling wave tube; The high-voltage conducting wires of TWT Power is connected with terminal block and fixes through ply-yarn drill and front end housing; Front end housing snaps onto the wire connection cavity outside and together wire connection cavity is sealed with stator.

Described terminal block is through epoxy resin and the encapsulation of embedding chamber.

The utility model advantage compared with prior art is:

(1) the utility model has adopted the design in embedding chamber, and the terminal block that is used to connect travelling wave tube high-tension cable and EPC high-voltage conducting wires can encapsulate through epoxy resin and embedding chamber, improve the reliability of travelling wave tube high-tension cable and EPC high-voltage conducting wires insulation processing;

(2) the utility model has adopted the design of wire barrel and stator, and the locking and the fixing screen of travelling wave tube high-tension cable for the travelling wave tube high-tension cable provides good ground connection approach, form shielding reliably.

Description of drawings

Fig. 1 is a travelling-wave tube amplifier theory of constitution block diagram;

Fig. 2 is a TWT high voltage cable sketch map;

Fig. 3 is the utility model high pressure adapter cavity external view;

Fig. 4 is the utility model high pressure adapter cavity internal view one;

Fig. 5 is the utility model high pressure adapter cavity internal view two;

Fig. 6 is the utility model high pressure adapter wire connection cavity structure chart;

Fig. 7 is the utility model high pressure adapter wire barrel structure chart;

Fig. 8 is the utility model high pressure adapter embedding cavity configuration figure;

Fig. 9 is the utility model high pressure adapter stator structure chart;

Figure 10 is the utility model high pressure adapter front end housing structure chart.

Embodiment

Like Fig. 3～shown in Figure 5, the utility model EPC and TWT high pressure adapter structure are positioned at the cavity that stretch out EPC front end housing top, and it mainly is made up of front end housing 1, wire connection cavity 2, wire barrel 3, stator 4, embedding chamber 5, terminal block 6 and ply-yarn drill more than 7 parts.Wherein the concrete structure of wire connection cavity 2, wire barrel 3, embedding chamber 5, stator 4, front end housing 1 is respectively like Fig. 6～shown in Figure 10.

Wire connection cavity 2 is unsealed cavity body structure with embedding chamber 5; Embedding chamber 5 is fixed on wire connection cavity 2 inside with ply-yarn drill 7; Terminal block 6 is fixed on 5 inside, embedding chamber and with epoxy resin 5 embeddings of whole embedding chamber is become whole, and four M2.5 * 6 screw are passed through in wire connection cavity 2 bottoms in embedding chamber 5.Stator 4 is fixed on the outside of wire connection cavity 2, and the through hole that wire barrel 3 passes on the stator 4 gos deep into to embedding chamber 5, and the high voltage cable of TWT passes wire barrel 3 and is connected with terminal block 6.The high-voltage conducting wires of EPCOT is connected with terminal block 6.Front end housing 1 snaps onto wire connection cavity 2 outsides and together wire connection cavity 2 is sealed with stator 4.

The high voltage cable of TWT and the high-voltage conducting wires of TWT Power all are welded on the terminal block 6, and the end of the shield ends of the high voltage cable of TWT upset back parcel wire barrel 3 blocks and fastening with two M2.5 * 5 screws with stator 4.The EPC high-voltage conducting wires is fixing with front end housing 1 with ply-yarn drill 7.Two M2.5 of stator 4 usefulness * 5 screws are fastened on wire connection cavity 2 outsides.Cover on front end housing 1 outside at last and with five M2.5 * 6 screw on wire connection cavity 2.

The content of not doing to describe in detail in the utility model specification belongs to those skilled in the art's known technology.

Claims

1. a travelling-wave tube amplifier high pressure adapter is characterized in that comprising: front end housing (1), wire connection cavity (2), wire barrel (3), stator (4), embedding chamber (5), terminal block (6) and ply-yarn drill (7); Wire connection cavity (2) and embedding chamber (5) are unsealed cavity body structure, and embedding chamber (5) and ply-yarn drill (7) are fixed on wire connection cavity (2) inside, and terminal block (6) is fixed on inside, embedding chamber (5) and together is packaged into integral body with embedding chamber (5); Stator (4) is fixed on the outside of wire connection cavity (2); The through hole that wire barrel (3) passes on the stator (4) gos deep into to embedding chamber (5); The high voltage cable of travelling wave tube passes wire barrel (3) and is connected with terminal block (6), the end of the high voltage cable shield ends upset back parcel wire barrel (3) of travelling wave tube; The high-voltage conducting wires of TWT Power is connected with terminal block (6) and is fixing through ply-yarn drill (7) and front end housing (1); Front end housing (1) snaps onto wire connection cavity (2) outside and together wire connection cavity (2) is sealed with stator (4).

2. a kind of travelling-wave tube amplifier high pressure adapter according to claim 1 is characterized in that: described terminal block (6) is through epoxy resin and embedding chamber (5) encapsulation.