阅读说明：本技术 大功率波导隔离器 (High-power waveguide isolator ) 是由 何桂林 廖纪林 于 2021-07-28 设计创作，主要内容包括：本发明涉及隔离器技术领域,公开了大功率波导隔离器,包括上腔体和上腔体下端设置的下腔体,上腔体和上腔体内腔壁分别设置有铁氧体,上腔体和下腔体一侧开设有输出口,其相对另一侧开设有输入口,上腔体和下腔体内部设置有水负载,水负载包括上腔体外表面一侧设置有进出水嘴,上腔体和下腔体内腔之间设置有石英玻璃管,下腔体外表面一侧设置有第一水嘴安装座,其下腔体外表面另一侧设置有第二水嘴安装座,当微波从输入口输入时,由于磁回路激发的铁氧体的旋磁特性,微波只能从输出口输出,从输出口外反射进入隔离的微波,会绕行到水负载处,被水吸收,从而不会从输入口输出,实现输入到输出单向传输的功能。(The invention relates to the technical field of isolators, and discloses a high-power waveguide isolator which comprises an upper cavity and a lower cavity arranged at the lower end of the upper cavity, wherein ferrites are respectively arranged on the inner cavity walls of the upper cavity and the upper cavity, one side of the upper cavity and one side of the lower cavity are provided with an output port, the other side of the upper cavity and the other side of the lower cavity are provided with input ports, water loads are arranged inside the upper cavity and the lower cavity, each water load comprises a water inlet nozzle and a water outlet nozzle arranged on one side of the outer surface of the upper cavity, a quartz glass tube is arranged between the inner cavities of the upper cavity and the lower cavity, a first water nozzle mounting seat is arranged on one side of the outer surface of the lower cavity, and a second water nozzle mounting seat is arranged on the other side of the outer surface of the lower cavity, when microwaves are input from the input ports, the microwaves can only be output from the output ports due to the gyromagnetic characteristic of the ferrites excited by a magnetic circuit, the microwaves reflected from the output ports enter the isolated microwaves, can bypass to the water loads and are absorbed by the water, so that the microwaves can not be output from the input ports, the function of unidirectional transmission from input to output is realized.)

1. High-power waveguide isolator, including last cavity (1) and lower cavity (2) that last cavity (1) lower extreme set up, its characterized in that: the inner cavity walls of the upper cavity (1) and the upper cavity (2) are respectively provided with a ferrite (20), one side of the upper cavity (1) and the lower cavity (2) is provided with an output port (22), the other side of the upper cavity (1) and the lower cavity (2) is provided with an input port (23), and water loads (11) are arranged in the upper cavity (1) and the lower cavity (2);

the water load (11) comprises an upper cavity (1), wherein a water inlet and outlet nozzle (15) is arranged on one side of the outer surface of the upper cavity, and a quartz glass tube (21) is arranged between the inner cavities of the upper cavity (1) and the lower cavity (2).

2. The high power waveguide isolator of claim 1, wherein: go up cavity (1) and lower cavity (2) surface and be provided with water route apron (3), water route apron (3) upper end both sides are provided with first water pipe seat (5), and below water route apron (3) surface both sides are provided with second water pipe seat (6), and first water pipe seat (5) and second water pipe seat (6) inner chamber are provided with sealing washer (10), and first water pipe seat (5) and second water pipe seat (6) one side are provided with interior card and directly connect (16).

3. The high power waveguide isolator of claim 2, wherein: a first water nozzle mounting seat (7) is arranged on one side of the outer surface of the lower cavity (2), a second water nozzle mounting seat (8) is arranged on the other side of the outer surface of the lower cavity (2), a steel pipe (9) is arranged on one side of the upper end of the first water nozzle mounting seat (7), the tail end of the steel pipe (9) is connected with an inner clamping through joint (16), and a plug (17) is arranged on one side of the second water nozzle mounting seat (8).

4. The high power waveguide isolator of claim 1, wherein: the upper end of the upper cavity (1) is provided with magnetic steel (19), magnetic steel pressing blocks (4) are arranged on the outer surface of the magnetic steel (19), and the magnetic steel pressing blocks (4) are divided into three groups.

5. The high power waveguide isolator of claim 1, wherein: and a forward and reverse coupling part is arranged at the upper end of the upper cavity (1), and the forward and reverse coupling part is an N-K connector (18).

6. The high power waveguide isolator of claim 1, wherein: the upper cavity (1) and the lower cavity (2) are connected through a screw rod (14), and a nut (13) is connected to the outer surface of the screw rod (14) in a threaded mode.

7. The high power waveguide isolator of claim 6, wherein: the upper end surface of the nut (13) is provided with limiting holes (12), and the limiting holes (12) are uniformly distributed in an inwards concave cylindrical structure at equal intervals.

8. The high power waveguide isolator of claim 7, wherein: go up cavity (1) upper end one side and seted up flexible groove (24), flexible groove (24) inner chamber is provided with telescopic link (25), and reset spring (26) have been cup jointed to telescopic link (25) position in flexible groove (24) inner chamber one end surface, and telescopic link (25) one end is provided with dog (27), and its telescopic link (25) are U-shaped column structure, and the end is pegged graft in spacing hole (12) inner chamber.

9. The high power waveguide isolator of claim 8, wherein: a first magnetic block (251) is arranged at the lower end of an inner cavity of the telescopic rod (25), a clamping groove (255) is formed in the bottom surface of the nut (13), a moving groove (252) is formed in the inner cavity of the upper cavity (1), a telescopic clamping block (253) is arranged in the inner cavity of the moving groove (252), a second magnetic block (254) is arranged in the inner cavity of the upper end of the telescopic clamping block (253), the magnetism of the second magnetic block (254) is attracted to the magnetism of the first magnetic block (251), the height of the first magnetic block (251) arranged in the inner cavity of the tail end of the telescopic rod (25) is matched with the depth of the inner cavity of the limiting hole (12), and the telescopic rod (25) is a component made of stainless steel materials;

the clamping grooves (255) are of an inclined triangular structure and are distributed in an annular end-to-end connection mode, and the tops of the telescopic clamping blocks (253) are also of an inclined triangular structure.

10. The high power waveguide isolator of claim 1, wherein: the diameter of the ferrite (20) is 38-48mm, and the thickness is 1.5-4 mm.

Technical Field

The invention relates to the technical field of isolators, in particular to a high-power waveguide isolator.

Background

The isolator is a microwave passive device, the device is provided with two ports, and microwaves incident into the isolator are deflected at a certain angle by utilizing the gyromagnetic effect generated by a ferrite material under the action of an external direct-current magnetic field and are output from an output port, but are not output from a load port, so that the unidirectional transmission of microwave signals is realized. Isolators, also known as signal isolators, are important components of microwave systems.

However, in the present isolator, when in use, the microwave enters from the input port, is transmitted in the right direction and then is output from the output port, but the microwave inside some isolators enters and outputs, the microwave therein is output in the reverse direction, so that the microwave enters from the input port and then is output from the input port again.

The problems described above are addressed. To this end, high power waveguide isolators have been proposed.

Disclosure of Invention

The invention aims to provide a high-power waveguide isolator, when microwave is input from an input port, the microwave can only be output from the output port due to the gyromagnetic property of ferrite excited by a magnetic loop, the microwave reflected from the output port and entering the isolated microwave can bypass to a water load and be absorbed by water, so that the microwave cannot be output from the input port, and the function of unidirectional transmission from input to output is realized, thereby solving the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the high-power waveguide isolator comprises an upper cavity and a lower cavity arranged at the lower end of the upper cavity, wherein ferrites are respectively arranged on the inner cavity walls of the upper cavity and the upper cavity, an output port is formed in one side of the upper cavity and the lower cavity, an input port is formed in the other side of the upper cavity and the lower cavity, and water loads are arranged in the upper cavity and the lower cavity;

the water load comprises an upper cavity body, wherein a water inlet and outlet nozzle is arranged on one side of the outer surface of the upper cavity body, and a quartz glass tube is arranged between the upper cavity body and an inner cavity of the lower cavity body.

Preferably, the outer surfaces of the upper cavity and the lower cavity are provided with water channel cover plates, two sides of the upper end of each water channel cover plate are provided with first water pipe seats, two sides of the outer surface of the lower water channel cover plate are provided with second water pipe seats, inner cavities of the first water pipe seats and the second water pipe seats are provided with sealing rings, and one sides of the first water pipe seats and one sides of the second water pipe seats are provided with inner-clamping through connectors.

Preferably, a first water nozzle mounting seat is arranged on one side of the outer surface of the lower cavity, a second water nozzle mounting seat is arranged on the other side of the outer surface of the lower cavity, a steel pipe is arranged on one side of the upper end of the first water nozzle mounting seat, the tail end of the steel pipe is connected with the inner clamping through joint, and a plug is arranged on one side of the second water nozzle mounting seat.

Preferably, the upper end of the upper cavity body is provided with magnetic steel, magnetic steel pressing blocks are arranged on the outer surface of the magnetic steel, and the number of the magnetic steel pressing blocks is three.

Preferably, the upper end of the upper cavity body is provided with a forward and reverse coupling component, and the forward and reverse coupling component is an N-K connector.

Preferably, the upper cavity and the lower cavity are connected through a screw, and a nut is connected to the outer surface of the screw in a threaded manner.

Preferably, the surface of the upper end of the nut is provided with limiting holes, and the limiting holes are uniformly distributed in a concave cylindrical structure at equal intervals.

Preferably, flexible groove has been seted up to last cavity upper end one side, and flexible inslot cavity is provided with the telescopic link, and the telescopic link is located flexible inslot cavity one end surface and has cup jointed reset spring, and telescopic link one end is provided with the dog, and its telescopic link is U-shaped structure, and the end is pegged graft in spacing hole inner chamber.

Preferably, a first magnetic block is arranged at the lower end of an inner cavity of the telescopic rod, a clamping groove is formed in the bottom surface of the nut, a moving groove is formed in the inner cavity of the upper cavity, a telescopic clamping block is arranged in the inner cavity of the moving groove, a second magnetic block is arranged in the inner cavity of the upper end of the telescopic clamping block, the magnetism of the second magnetic block is attracted to that of the first magnetic block, the height of the first magnetic block arranged in the inner cavity of the tail end of the telescopic rod is matched with the depth of the inner cavity of the limiting hole, and the telescopic rod is a component made of stainless steel materials;

the clamping groove is of an inclined triangular structure, the annular clamping grooves are distributed in an end-to-end connection mode, and the top of the telescopic clamping block is also of an inclined triangular structure.

Preferably, the ferrite has a diameter of 38-48mm and a thickness of 1.5-4 mm.

Compared with the prior art, the invention has the following beneficial effects:

1. when microwave is input from the input port, the high-power waveguide isolator can only output from the output port due to the gyromagnetic property of ferrite excited by the magnetic loop, and the microwave reflected from the output port and entering the isolator can bypass to the water load and be absorbed by water, so that the microwave cannot be output from the input port, and the function of unidirectional transmission from input to output is realized.

2. According to the high-power waveguide isolator, when the isolation height of the upper cavity and the lower cavity needs to be adjusted, the nut and the screw can be adjusted, so that the tolerance on the ferrite parameter size, the quartz glass tube parameter size and the processing is higher.

3. According to the high-power waveguide isolator, due to the design of the shape and the size of the ferrite, the heat generated by the ferrite can be guided into the cavity and is quickly taken away by water flow, the heat concentration is reduced, and the stress cracking damage is avoided.

4. According to the high-power waveguide isolator, when the isolation height is adjusted by the nut and the screw rod, the telescopic rod in the U-shaped structure can be pulled upwards, so that the tail end of the telescopic rod can be inserted into the inner cavity of the limiting hole formed in the surface of the upper end of the nut, the lower pressure is provided by the reset spring sleeved on the outer surface of the telescopic rod, and the telescopic rod can be pressed on the upper end of the nut in an auxiliary mode downwards to achieve a certain fixing effect.

5. According to the high-power waveguide isolator provided by the invention, when the telescopic rod is pressed down and inserted into the inner cavity of the limiting hole for pressing down and fixing, the magnetism of the first magnetic block is attracted with the magnetism of the second magnetic block arranged at the upper end of the inner cavity of the telescopic fixture block, so that the telescopic fixture block extends out of the inner cavity of the moving groove, and the upper end of the telescopic fixture block can be clamped in the clamping groove, so that the telescopic fixture block can prevent the nut from reversely rotating and loosening after the nut is fixed, and the isolation height is prevented from changing.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the upper chamber of the present invention;

FIG. 3 is a side view schematic of the upper and lower chambers of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

fig. 5 is a schematic front view of the upper and lower chambers of the present invention.

Fig. 6 is a schematic view of the nut structure of the present invention.

Reference numerals:

1. an upper cavity; 2. a lower cavity; 3. a waterway cover plate; 4. magnetic steel pressing blocks; 5. a first water pipe seat; 6. a second water pipe seat; 7. a first water nozzle mounting seat; 8. a second water nozzle mounting seat; 9. a steel pipe; 10. a seal ring; 11. water loading; 12. a limiting hole; 13. a nut; 14. a screw; 15. a water outlet nozzle; 16. an inner clamp straight joint; 18. an N-K linker; 17. a plug; 19. magnetic steel; 20. a ferrite; 21. a quartz glass tube; 22. an output port; 23. an input port; 24. a telescopic groove; 25. a telescopic rod; 251. a first magnetic block; 252. a moving groove; 253. a telescopic clamping block; 254. a second magnetic block; 255. a card slot; 26. a return spring; 27. and a stop block.

Detailed Description

The technical solution will be fully described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-2 and 5, the model of the high power waveguide isolator used in this embodiment is BJ26, the waveguide isolator includes an upper cavity 1 and a lower cavity 2 disposed at the lower end of the upper cavity 1, the upper cavity 1 and the lower cavity 2 form the isolator, the inner cavity walls of the upper cavity 1 and the upper cavity 2 are respectively provided with ferrites 20, one side of the upper cavity 1 and the lower cavity 2 is provided with an output port 22, the other side thereof is provided with an input port 23, a water load 11 is disposed inside the upper cavity 1 and the lower cavity 2, the water load 11 includes a water inlet and outlet nozzle 15 disposed at one side of the outer surface of the upper cavity 1, a quartz glass tube 21 is disposed between the inner cavities of the upper cavity 1 and the lower cavity 2, when microwaves are input from the input port 23, due to the gyromagnetic property of the ferrites 20 excited by the magnetic circuit, the microwaves can only be output from the output port 22, the microwaves are reflected from the output port 22 to enter the isolated microwaves, the water flows around the water load 11 and is absorbed by the water, so that the water is not output from the input port 23, and the function of unidirectional transmission from the input to the output is realized.

It should be noted that, the diameter of the ferrite 20 is 38-48mm, the thickness is 1.5-4mm, and the shape and size of the ferrite 20 are designed to facilitate the heat generated by the ferrite to be conducted to the cavity and to be quickly taken away by water flow, so that the heat concentration is reduced, and the stress cracking damage is avoided.

Referring to fig. 2, the inner cavities of an upper cavity 1 and a lower cavity 2 are provided with a water channel, the water channel is composed of an upper cavity 1, a lower cavity 2, a water channel cover plate 3, a first water nozzle mounting seat 7, a second water nozzle mounting seat 8, a first water pipe seat 5 and a second water pipe seat 6, one side of the outer surface of the lower cavity 2 is provided with the first water nozzle mounting seat 7, the other side of the outer surface of the lower cavity 2 is provided with the second water nozzle mounting seat 8, one side of the upper end of the first water nozzle mounting seat 7 is provided with a steel pipe 9, the tail end of the steel pipe 9 is connected with an inner clamping through joint 16, one side of the second water nozzle mounting seat 8 is provided with a plug 17, the outer surfaces of the upper cavity 1 and the lower cavity 2 are provided with the water channel cover plate 3, two sides of the upper end of the water channel cover plate 3 are provided with the first water pipe seats 5, two sides of the outer surface of the lower water channel cover plate 3 are provided with the second water pipe seats 6, the inner cavities of the first water pipe seats 5 and the second water pipe seats 6 are provided with sealing rings 10, the leakage phenomenon is prevented through the sealing performance of the sealing ring 10, an inner clamping through joint 16 is arranged on one side of the first water pipe seat 5 and one side of the second water pipe seat 6, a red copper pipe and the inner clamping through joint 16 are in hard connection in a waterway, so that the water leakage phenomenon of the red copper pipe and the inner clamping through joint 16 in the use process is avoided, the surfaces of the red copper pipe and the inner clamping through joint 16 are in a nickel plating mode, the oxidation corrosion is prevented, the magnetic steel 19 is arranged at the upper end of the upper cavity 1, the outer surface of the magnetic steel 19 is provided with magnetic steel pressing blocks 4, the magnetic steel pressing blocks 4 are three groups, the upper end of the upper cavity 1 is provided with a forward and reverse coupling component, the forward and reverse coupling component is an N-K joint 18, the forward and reverse coupling component is integrated into the isolator, the forward and reverse power of the isolator can be detected more conveniently, and a user can build a system conveniently.

Referring to fig. 2-3, upper cavity 1 and lower cavity 2 are connected through screw rod 14, and screw rod 14 surface threaded connection has nut 13, and when upper cavity 1 and lower cavity 2 isolation height need be transferred, nut 13 can be rotated, makes nut 13 carry out lift adjustment along screw rod 14's direction, and nut 13 also conveniently adjusts with the screw thread fit of screw rod 14 to the fault-tolerance to ferrite 20 parameter size, quartz glass tube 21's parameter size and processing is higher.

Referring to fig. 4-6, the upper end surface of the nut 13 is provided with a limiting hole 12, the limiting holes 12 are uniformly distributed in a concave cylindrical structure at equal intervals, so that after the isolation height of the nut 13 is adjusted, the limiting holes 12 are uniformly distributed at the upper end of the nut 13, so that the telescopic rod 25 can be elastically pressed down and fixed at an angle, one side of the upper end of the upper cavity 1 is provided with a telescopic groove 24, an inner cavity of the telescopic groove 24 is provided with a telescopic rod 25, the outer surface of the telescopic rod 25 at one end of the inner cavity of the telescopic groove 24 is sleeved with a return spring 26, one end of the telescopic rod 25 is provided with a stop 27, the telescopic rod 25 is in a U-shaped structure, one end of the telescopic rod 25 in the U-shaped structure can be better inserted and fixed when the limiting hole 12 is pressed down, the tail end of the telescopic rod 25 is inserted and fixed in the inner cavity of the limiting hole 12, when the isolation height adjustment of the nut 13 and the screw 14 is completed, the telescopic rod 25 in the U-shaped structure can be pulled upwards, subsequently, the telescopic rod 25 is rotated, so that the tail end of the telescopic rod 25 can be aligned to the limiting hole 12, the tail end of the telescopic rod 25 can be inserted into an inner cavity of the limiting hole 12 formed in the upper end surface of the nut 13, and the reset spring 26 sleeved on the outer surface of the telescopic rod 25 provides downward pressure, so that the telescopic rod 25 can be downwards pressed on the upper end of the nut 13 in an auxiliary mode to achieve a certain fixing effect.

The lower end of the inner cavity of the telescopic rod 25 is provided with a first magnetic block 251, the bottom surface of the nut 13 is provided with a clamping groove 255, the inner cavity of the upper cavity 1 is provided with a moving groove 252, the inner cavity of the moving groove 252 is provided with a telescopic clamping block 253, the inner cavity of the upper end of the telescopic clamping block 253 is provided with a second magnetic block 254, the magnetism of the second magnetic block 254 is attracted to the magnetism of the first magnetic block 251, the height of the first magnetic block 251 arranged in the inner cavity at the tail end of the telescopic rod 25 is matched with the depth of the inner cavity of the limiting hole 12, the telescopic rod 25 is a component made of stainless steel materials, after the telescopic rod 25 is inserted into the limiting hole 12, the magnetism of the first magnetic block 251 is attracted to the magnetism of the second magnetic block 254, and therefore the telescopic clamping block 253 can move telescopically;

draw-in groove 255 is slope form triangular structure, cyclic annular end to end distributes, flexible fixture block 253 top is slope form triangular structure equally, push down to peg graft in spacing hole 12 inner chamber when pushing down fixedly when the telescopic link 25, the magnetism of first magnetic path 251 and the second magnetic path 254 magnetism that flexible fixture block 253 inner chamber upper end set up attract mutually, thereby make flexible fixture block 253 stretch out from the shifting chute 252 inner chamber, flexible fixture block 253 upper end can joint in draw-in groove 255, make flexible fixture block 253 upper end slope form structure and draw-in groove 255 cooperation back, play fixed effect to nut 13, thereby make nut 13 in fixed back, flexible fixture block 253 can prevent that nut 13 antiport from appearing not hard up, prevent to keep apart the height and appear changing.

The isolator parts are integrally milled by using a numerical control machine and then connected by using a screw assembling mode, so that the smoothness, the flatness and the attractiveness of the isolator are guaranteed.

The working principle is as follows: when microwave is input from the input port 23, due to the gyromagnetic characteristic of the ferrite 20 excited by the magnetic loop, the microwave can only be output from the output port 22, the microwave reflected and entering the isolated microwave from the output port 22 can bypass to the water load 11 and be absorbed by water, so that the microwave can not be output from the input port 23, and the function of unidirectional transmission from input to output is realized, when the isolation height of the upper cavity 1 and the lower cavity 2 needs to be adjusted, the nut 13 and the screw 14 can be adjusted, so that the parameter size of the ferrite 20, the parameter size of the quartz glass tube 21 and the fault tolerance of processing are higher, the design of the shape and the size of the ferrite 20 is more beneficial to leading the heat generated by the ferrite into the cavity and is quickly taken away by water flow, the heat concentration is reduced, the stress cracking damage is avoided, when the isolation height adjustment of the nut 13 and the screw 14 is completed, the expansion rod 25 in a U-shaped structure can be pulled upwards, thereby make the terminal spacing hole 12 inner chamber of seting up in nut 13 upper end surface of can pegging graft of telescopic link 25, reset spring 26 through the outer surface bell and spigot joint of telescopic link 25 provides the overdraft, thereby make telescopic link 25 can assist downwards to press in nut 13 upper end, play certain fixed effect, when telescopic link 25 pushes down to peg graft and pushes down in spacing hole 12 inner chamber fixedly, the magnetism of first magnetic path 251 and the second magnetic path 254 magnetism that telescopic fixture block 253 inner chamber upper end set up attract each other, thereby make telescopic fixture block 253 stretch out from the shifting chute 252 inner chamber, telescopic fixture block 253 upper end can joint in draw-in groove 255, thereby make nut 13 in fixed back, telescopic fixture block 253 can prevent that nut 13 antiport from appearing becoming flexible, prevent to keep apart the high change that appears, fixed effect is good.

It should be noted that although the embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.