CN112804805A - Microwave transmitting antenna of electron cyclotron resonance heating system - Google Patents
Microwave transmitting antenna of electron cyclotron resonance heating system Download PDFInfo
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- CN112804805A CN112804805A CN201911106611.3A CN201911106611A CN112804805A CN 112804805 A CN112804805 A CN 112804805A CN 201911106611 A CN201911106611 A CN 201911106611A CN 112804805 A CN112804805 A CN 112804805A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims description 16
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- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/02—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma
- H05H1/16—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma using externally-applied electric and magnetic fields
- H05H1/18—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma using externally-applied electric and magnetic fields wherein the fields oscillate at very high frequency, e.g. in the microwave range, e.g. using cyclotron resonance
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H13/00—Magnetic resonance accelerators; Cyclotrons
- H05H13/005—Cyclotrons
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Abstract
The invention discloses a microwave transmitting antenna of an electron cyclotron resonance heating system, relates to the technical field of plasma heating, and solves the problems that in the prior art, when the transmitting antenna of the electron cyclotron resonance heating system adjusts the microwave injection angle, the adjusting response speed is low, and the accuracy is low. The microwave transmitting antenna of the electron cyclotron resonance heating system comprises a shell, wherein a waveguide tube, a focusing mirror and a plane mirror are arranged in the shell, the first end of the waveguide tube is fixedly connected with the shell, and the second end of the waveguide tube is positioned in the shell; the focusing mirror is rotatably connected with the shell, is arranged opposite to the second end of the waveguide tube and is used for focusing and reflecting the microwaves injected by the waveguide tube; the mirror surface of the plane mirror is opposite to the mirror surface of the focusing mirror and is used for reflecting the microwaves focused and reflected by the focusing mirror, and the plane mirror is rotatably connected with the shell; the microwave transmitting antenna of the electron cyclotron resonance heating system further comprises a driving assembly, and the driving assembly is used for driving the focusing mirror and/or driving the plane mirror to rotate.
Description
Technical Field
The invention relates to the technical field of plasma heating, in particular to a microwave transmitting antenna of an electron cyclotron resonance heating system.
Background
The electron cyclotron resonance heating system comprises a microwave source, a microwave transmitting antenna and a plasma vacuum area to be heated, wherein one side of the microwave transmitting antenna is connected with the plasma vacuum area, and the other side of the microwave transmitting antenna is connected with the microwave source. The microwave generated by the microwave source is injected into a plasma vacuum area to be heated in a certain direction and at a certain angle after being processed by the microwave transmitting antenna, and is coupled with the plasma, so that the plasma is heated. The structure and the working performance of the microwave transmitting antenna of the electron cyclotron resonance heating system directly determine the heating effect of the electron cyclotron resonance heating system.
Generally, a microwave transmitting antenna includes a housing forming a vacuum sealed cavity in which a waveguide, a focusing mirror, and a plane mirror are disposed. And one side of the vacuum sealing cavity is provided with an interface communicated with the waveguide tube, and microwaves generated by the microwave wave source are sent into the waveguide tube through the interface, then pass through the waveguide tube, are reflected by the focusing mirror and the plane mirror and are injected into a space area where the plasma is located at a certain angle. In the prior art, in order to adjust the angle of microwave injection into a plasma vacuum region to be heated, a plane mirror is rotatably connected with a shell, and the microwave injection angle is adjusted by manually adjusting and controlling the plane mirror.
However, in the prior art, the mode of adjusting the microwave injection angle by manually operating the leveling mirror is slow in adjustment response speed and low in adjustment precision, and is not beneficial to development and implementation of related scientific research experiments.
Disclosure of Invention
The embodiment of the invention provides a microwave transmitting antenna of an electron cyclotron resonance heating system, and solves the problems that in the prior art, when the transmitting antenna of the electron cyclotron resonance heating system adjusts the microwave injection angle, the adjusting response speed is low, and the accuracy is low.
In order to achieve the above object, an embodiment of the present invention provides a microwave transmitting antenna of an electron cyclotron resonance heating system, which includes a housing, wherein a side wall of the housing is provided with an opening for communicating with a microwave source; the shell is internally provided with a waveguide tube, a focusing mirror and a plane mirror. The waveguide tube is used for transmitting microwaves generated by a microwave wave source, the first end of the waveguide tube is fixedly connected with the opening, and the second end of the waveguide tube is positioned in the shell; the focusing mirror is used for focusing and reflecting the microwaves output by the waveguide tube, is rotatably connected with the shell and is arranged opposite to the second end of the waveguide tube; the plane mirror is used for reflecting the microwave reflected by the focusing mirror, the plane mirror is rotatably connected with the shell, and the mirror surface of the plane mirror is opposite to the mirror surface of the focusing mirror. The microwave transmitting antenna of the electron cyclotron resonance heating system further comprises a driving assembly, and the driving assembly is used for driving the focusing mirror and/or driving the plane mirror to rotate.
The microwave transmitting antenna of the electron cyclotron resonance heating system comprises a shell, wherein an opening used for being communicated with a microwave wave source is formed in the side wall of the shell; a waveguide tube, a focusing mirror and a plane mirror are arranged in the shell, the first end of the waveguide tube is fixedly connected with the opening, the second end of the waveguide tube is positioned in the shell, and the focusing mirror is arranged opposite to the second end of the waveguide tube; the mirror surface of the plane mirror is opposite to the mirror surface of the focusing mirror. The device also comprises a driving assembly, wherein the driving assembly is used for driving the focusing mirror and/or driving the plane mirror to rotate. When the electron cyclotron resonance heating system works, microwaves generated by a microwave wave source enter the first end of the waveguide tube through the opening and are emitted from the second end, the emitted microwaves impact the mirror surface of the focusing mirror opposite to the second end, the microwaves are emitted to the plane mirror after being reflected and focused by the focusing mirror, and then the microwaves are injected into a vacuum area, needing to be heated, of the plasma at a certain angle after being reflected by the plane mirror. The focusing mirror and the plane mirror are both rotationally connected with the shell, and the driving assembly adjusts the included angle between the focusing mirror and the waveguide tube; or adjusting the included angle between the focusing mirror and the plane mirror; or simultaneously adjusting the included angle between the focusing mirror and the waveguide tube and the included angle between the focusing mirror and the plane mirror, and adjusting the incident angle when the microwave is injected into the vacuum area to be heated of the plasma. Compared with the prior art, the method for adjusting the incident angle by manually adjusting the plane mirror is adopted; according to the microwave transmitting antenna of the electron cyclotron resonance heating system, due to the fact that the driving assembly is additionally arranged, the incident angle can be automatically controlled and adjusted through the driving assembly, and the operation is simple and convenient; the speed of the electrical adjustment is faster, which can speed up the operation of the electron cyclotron resonance heating system in response to the change of the first incidence angle. Moreover, in the prior art, only the plane mirror can be controlled and adjusted. In the embodiment of the invention, the focusing mirror and the plane mirror are both rotationally connected with the shell and can be subjected to angle adjustment through the driving assembly, and the adjustment range and the adjustment precision of the incident angle of the microwave entering the vacuum area to be heated are higher.
Drawings
Fig. 1 is a schematic perspective view of a microwave transmitting antenna according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a microwave transmitting antenna according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a driving assembly of a microwave transmitting antenna according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a connection manner between a driving motor of a microwave transmitting antenna and a bellows according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a bellows of the microwave transmitting antenna according to the embodiment of the present invention.
Reference numerals
1-a shell; 11-opening; 12-a viewing window; 13-shackle removal; 14-a lug through hole; 15-sealing the flange; 2-a waveguide; 21-a first end; 22-a second end; 3-a focusing mirror; 31-a first shaft; 4-a plane mirror; 41-a second rotating shaft; 5-a drive assembly; 51-a drive motor; 511-cannula; 512-threaded rod; 52-a transmission structure; 521-a push rod; 522-connecting rod; 53-bellows; 531-vacuum sealing the flange; 532-a straight tube section; 533-ripple section; 534-connecting section; 6-an adapter; 61-a sleeve; 611-scale line; 7-a first scaffold; 8-second support.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For convenience of description, in the present application, the "vacuum region where the plasma needs to be heated" is simply referred to as "plasma distribution region"; an incidence angle when microwaves are injected into a vacuum area needing to be heated by plasma is simply called as a first incidence angle; the microwave transmitting antenna of the electron cyclotron resonance heating system is simply referred to as a microwave transmitting antenna.
An embodiment of the present invention provides a microwave transmitting antenna, as shown in fig. 1 and 2, including a housing 1, a side wall of the housing 1 being provided with an opening 11 for communicating with a microwave source; the waveguide 2, the focusing mirror 3 and the plane mirror 4 are arranged in the shell 1. The waveguide tube 2 is used for transmitting microwave generated by a microwave wave source, a first end 21 of the waveguide tube 2 is fixedly connected with the opening 11, and a second end 22 is positioned in the shell 1; the focusing mirror 3 is used for focusing and reflecting the microwaves injected by the waveguide 2, and the focusing mirror 3 is rotatably connected with the shell 1 and is arranged opposite to the second end 22 of the waveguide 2; the plane mirror 4 is used for reflecting the microwave reflected by the focusing mirror 3, the plane mirror 4 is rotatably connected with the shell 1, and the mirror surface of the plane mirror 4 is opposite to the mirror surface of the focusing mirror 3. The microwave transmitting antenna further comprises a driving assembly 5, and the driving assembly 5 is used for driving the focusing mirror 3 and/or driving the plane mirror 4 to rotate.
The microwave transmitting antenna provided by the embodiment of the invention, as shown in fig. 1 and fig. 2, comprises a housing 1, wherein the side wall of the housing 1 is provided with an opening 11 for communicating with a microwave wave source; the shell 1 is internally provided with a waveguide tube 2, a focusing mirror 3 and a plane mirror 4. A first end 21 of the waveguide 2 is fixedly connected with the opening 11, a second end 22 is positioned in the shell 1, and the focusing mirror 3 is arranged opposite to the second end 22 of the waveguide 2; the mirror surface of the plane mirror 3 is arranged opposite to the mirror surface of the focusing mirror 4. The microwave transmitting antenna also comprises a driving assembly 5, and the driving assembly 5 is used for driving the focusing mirror 3 to rotate and/or driving the plane mirror 4 to rotate. When the electron cyclotron resonance heating system works, microwaves generated by a microwave wave source enter the first end 21 of the waveguide tube 2 through the opening 11 and are emitted from the second end 22, the emitted microwaves impinge on the mirror surface 31 of the focusing mirror 3 opposite to the second end 22, are reflected and focused by the focusing mirror 3, are emitted to the plane mirror 4, are reflected by the plane mirror and are injected into a plasma distribution area at a certain angle. The focusing mirror 3 and the plane mirror 4 are both rotationally connected with the shell 1, and the driving component 5 adjusts the included angle between the focusing mirror and the 3 waveguide tube 2; or adjusting the included angle between the focusing mirror 3 and the plane mirror 4; or simultaneously adjusting the included angle between the focusing mirror 3 and the waveguide tube 2 and the included angle between the focusing mirror 3 and the plane mirror 4, and adjusting the first incident angle. Compared with the prior art, the first incident angle is adjusted by manually adjusting the plane mirror. According to the microwave transmitting antenna provided by the embodiment of the invention, the driving assembly 5 is additionally arranged, so that the first incident angle can be automatically controlled and adjusted through the driving assembly 5, and the operation is simple and convenient; and the speed of the electric adjustment is faster, so that the speed of the electron cyclotron resonance heating system responding to the change of the first incident angle can be increased. Furthermore, in the prior art, only the adjusting plane mirror can be controlled to adjust the first incident angle. In the embodiment of the invention, the focusing mirror 3 and the plane mirror 4 are both rotatably connected with the shell 1 and can be subjected to angle adjustment through the driving assembly 5, so that the adjustment range and the adjustment precision of the first incident angle are higher. It should be understood that the rotational connection of the focusing mirror 3 and the plane mirror 4 to the housing 1 means: both the focusing mirror 3 and the plane mirror 4 can be rotated relative to the housing 1.
It should be noted that, in order to ensure the sealing performance of the cavity enclosed by the housing 1, as shown in fig. 2, a sealing flange 15 is provided on the outer side wall of the opening 11, and the microwave transmission line is hermetically connected with the waveguide 2 through the sealing flange 15; the microwave transmitting antenna and the plasma distribution area are fixedly connected through a connecting loop flange, and a vacuum sealing cavity is enclosed in the shell 1. The microwave is output by a wave source, transmitted to the communication position of the microwave transmission line and the waveguide tube through the transmission line, injected into the vacuum sealing cavity along the waveguide tube 2, then sequentially passes through the focusing mirror 3 and the plane mirror 4, and finally injected into a plasma distribution area at a certain angle for plasma heating.
In the microwave transmitting antenna according to the embodiment of the present invention, as shown in fig. 3, the driving assembly 5 includes a driving motor 51 and a transmission structure 52. There are three ways to adjust the first incident angle, which are: the focusing lens 3 is adjusted independently; the plane mirrors 4 are adjusted independently; both the focusing mirror 3 and the plane mirror 4 are adjusted. In order to facilitate the driving motors 51 to control the rotation angles of the focusing mirrors 3 individually and to control the rotation angles of the plane mirrors 4 individually, in the embodiment of the present invention, the number of the driving motors 51 is two, and one of the focusing mirrors 3 rotates. The other driving motor 51 is used for driving the plane mirror 4 to rotate. Compared with the prior art, the first incident angle can be adjusted only by adjusting the plane mirror. The embodiment of the invention has more modes of adjusting the first incident angle and higher precision. The included angle between the focusing mirror 3 and the waveguide tube 2 and the included angle between the focusing mirror 3 and the plane mirror 4 are more in combination mode, and the adjusting range of the first incident angle is larger. The transmission structure 52 is used for connecting the driving motor 51 and the focusing mirror 3, and the driving motor 51 and the plane mirror 4, so that the kinetic energy generated by the driving motor 51 can be transmitted to the focusing mirror 3 and the plane mirror 4, and the focusing mirror 3 or the plane mirror 4 can rotate correspondingly.
It should be noted that only one driving motor 51 may be provided, and in this case, a switching structure needs to be provided, and the driving motor 51 may drive the focusing mirror 3 to rotate alone, or drive the plane mirror 4 to rotate alone, or drive the focusing mirror 3 and the plane mirror 4 to rotate simultaneously with the help of the switching structure. However, on the one hand, the addition of the switching structure makes the structure of the driving unit 5 complicated, which is not convenient for practical use. On the other hand, when one driving motor 51 simultaneously drives the focusing mirror 3 and the plane mirror 4 to rotate, the rotation control difficulty of the focusing mirror 3 and the plane mirror 4 is large; when the focusing mirror 3 and the plane mirror 4 need to be driven to rotate, only one of the two mirrors can be driven first, and the other mirror can be driven. Therefore, in the embodiment of the present invention, two driving motors 51 are used to respectively drive the focusing mirror 3 and the plane mirror 4 to rotate.
In the embodiment of the invention, when the first incident angle is adjusted, the focusing mirror 3 and the plane mirror 4 rotate in a reciprocating small angle within a certain angle range, the focusing mirror 3 and the plane mirror 4 have limit positions in the reciprocating rotation process, and the maximum rotation amplitude of the focusing mirror 3 and the plane mirror 4 is very small; in addition, in order to improve the adjustment accuracy of the first incident angle, when the focusing mirror 3 or the plane mirror 4 is adjusted, the rotation angle of the focusing mirror 3 or the plane mirror 4 is required to be small each time. Therefore, the transmission structure 52 is required to have a function of reducing the rotation angle of the driving motor 51, for example: the driving motor 51 rotates for several turns, and the transmission structure only drives the focusing mirror 3 or the plane mirror 4 to rotate for a small angle.
There are many types of transmission 52, such as gear drives, chain drives, belt drives, etc., each with its own advantages and disadvantages. However, in the embodiment of the present invention, the transmission mechanism 52 needs to convert the rotation of the output shaft of the driving motor 51 into the rotation of the focusing mirror 3 or the plane mirror 4. Therefore, in the embodiment of the present invention, as shown in fig. 3, the transmission mechanism 52 includes a push rod 521 and a connecting rod 522. The number of the push rods 521 and the connecting rods 522 is two, one of the push rods 521 and one of the connecting rods 522 are used for connecting the driving motor 51 and the focusing mirror 3, at this time, one end of the push rod 521 is connected with the driving motor 51, the other end of the push rod 521 is rotatably connected with one end of the connecting rod 522, and the other end of the connecting rod 522 is rotatably connected with the back of the focusing mirror 3. The other push rod 521 and the other push rod 522 are used for connecting the driving motor 51 and the plane mirror 4, poetry, one end of the push rod 521 is connected with the driving motor 51, the other end of the push rod 521 is rotatably connected with one end of the connecting rod 522, and the other end of the connecting rod 522 is rotatably connected with the back of the plane mirror 4. The driving motor 51 can drive the push rod 521 to reciprocate along the extending direction of the push rod 521, in the process, one end of the connecting rod 522 connected with the push rod 521 makes a linear motion along the extending direction of the push rod 521, and one end connected with the focusing mirror 3 drives the focusing mirror 3 or the plane mirror 4 to rotate. The extending direction of the push rod 521 is perpendicular to the rotation axis of the focusing mirror 3 or the plane mirror 4 in a different plane, that is, the rotating axes of the push rod 521 and the focusing mirror 3 or the plane mirror 4 are located on different planes, and the extending directions of the push rod 521 and the plane mirror 4 are perpendicular to each other. If the rotation axis of the push rod 521 and the focus lens 3 is not perpendicular, or the rotation axis of the push rod 521 and the focus lens 3 are located in the same plane, the amount of thrust required when the push rod 521 pushes the focus lens 3 to rotate will be increased.
In general, to facilitate maintenance and replacement and reduce installation difficulty, the driving motor 51 is located outside the housing 1, and the push rod 521 passes through the housing 1 and is connected to the driving motor 51. However, when the electron cyclotron resonance heating system is used, a vacuum sealing environment is required to be ensured in the shell of the microwave transmitting antenna. In order to ensure the sealing performance of the inner space of the housing 1, as shown in fig. 5, the driving assembly 5 further includes a bellows 53 sleeved on the outside of the push rod 521, one end of the bellows 53 is connected to the housing 1 in a sealing manner, and the other end is closed. The part of the push rod 521 extending out of the housing 1 is completely covered by the bellows, and the housing 1 and the bellows 53 form a sealed space together. One end of the push rod 521 close to the driving motor 51 is fixedly connected with the inner wall of the closed end of the corrugated pipe 53, and the driving motor 51 is fixedly connected with the outer side wall of the closed end of the push rod 521. The driving motor 51 is connected and fixed through a corrugated pipe 53. In order to enable the driving motor 51 to drive the push rod 521 inside the bellows 53 to move, the bellows 53 can be deformed in a telescopic manner along the extending direction of the bellows 53. When the driving motor 51 applies a force to the bellows 53 along the axial direction of the bellows 53, the bellows 53 is stretched or compressed, and the inner push rod 521 is driven to displace along the axial direction of the bellows 53.
The corrugated pipe 53 of the embodiment of the present invention sequentially includes a vacuum sealing flange 531, a straight pipe section 532, a corrugated section 533 and a connecting section 534 from one end of the corrugated pipe 53 hermetically connected to the housing 1 to the closed end along the extending direction of the corrugated pipe, and the corrugated pipe 53 is hermetically connected to the housing 1 through the vacuum sealing flange 531; the straight pipe section 532 is only used for covering the push rod 521, and the length of the straight pipe section 532 is determined according to the length of the push rod 521 extending out of the shell 1; the bellows 533 is a flexible bellows, and when the bellows 533 receives an axial force, it can be stretched or compressed to change the overall length of the bellows 53, so as to drive the push rod 521 inside to generate a displacement of the same magnitude; the connecting section 534 is used for connecting with the push rod 521 inside the bellows 53 and the driving motor 51 outside, one end of the connecting section 534 is hermetically connected with the corrugated section 533, and the other end comprises a bottom plate perpendicular to the connecting section 534, and the bottom plate closes the end of the connecting section 534. One end of the push rod 521 close to the driving motor 51 is fixedly connected with one side of the bottom plate close to the corrugated section 533; one end of the driving motor 51 for pushing the push rod 521 to move is fixedly connected with one end of the bottom plate far away from the corrugated segment 533.
In the embodiment of the present invention, as shown in fig. 2 and 3, since the focusing mirror 3 and the flat mirror 4 are disposed in parallel and opposed to each other, the back surface of the focusing mirror 3 faces upward to the left, and the back surface of the flat mirror 4 faces downward to the right. In order to reduce the volume of the microwave transmitting antenna and save space, two driving motors 51 are usually installed on the same side of the housing 1, and two push rods 521 are arranged in parallel with each other. As shown in fig. 3, when the push rod 521 for connecting the driving motor 51 and the focusing mirror 3 is closer to the rotation axis of the focusing mirror 3, in order to enable the link 522 to smoothly drive the focusing mirror 3 to rotate, the link 522 is arranged in a bent manner, and one end of the link 522 close to the focusing mirror 3 is bent toward the rotation axis of the focusing mirror 3.
In order to convert the rotation of the driving motor 51 into the linear motion of the pushing rod 521, optionally, as shown in fig. 4, a sleeve 511 and a threaded rod 512 are provided between the driving motor 51 and the pushing rod 521, and the inner wall of the sleeve 511 is provided with a thread matching the threaded rod 512. An output shaft of the driving motor 51 is fixedly connected with one end of the sleeve 511; the threaded rod 512 is sleeved in the sleeve 511 and is connected with the sleeve 511 through internal threads; one end of the threaded rod 512 far away from the driving motor 51 is fixedly connected with one end of the corrugated pipe 53 close to the driving motor 51. When the driving motor 51 rotates to drive the sleeve 511 to rotate, the threaded rod 512 rotates relative to the sleeve 511 under the action of the threads, and generates displacement along the axial direction during the rotation. The driving motor 51 may be connected to the bellows 53 in other manners, such as a rack and pinion structure, a gear worm structure, etc., as long as the rotation of the output shaft of the driving motor 51 can be converted into the movement of the push rod 521 along the axial direction thereof.
In order to facilitate the movement of the microwave transmitting antenna, the driving motor 51 is fixedly connected with the outer side wall of the housing 1, and because the driving motor 51 is located at a position far away from the housing 1, an adaptor 6 is arranged between the housing 1 and the driving motor 51, one end of the adaptor 6 is fixedly connected with the outer side wall of the housing 1, and the other end of the adaptor is fixedly connected with the driving motor 51.
The range of the rotation angle of the focusing mirror 3 and the plane mirror 4 is positively correlated with the displacement range of the push rod 521, the larger the displacement range of the push rod 521 is, the larger the range of the rotation angle of the focusing mirror 3 and the plane mirror 4 is, and the telescopic amount of the bellows 53 determines the displacement range of the push rod 521. In order to ensure that the focusing mirror 3 and the plane mirror 4 can rotate within a certain range, in the embodiment of the present invention, the maximum expansion amount of the corrugated section 533 is greater than or equal to 30 mm.
In the present application, the range of the rotation angle of the focusing mirror 3 is 25 ° to 55 °, and the range of the rotation angle of the plane mirror 4 is 20 ° to 40 °. As shown in fig. 3, the rotation angle of the focusing mirror 3 is: the plane of the focusing mirror 3 forms an included angle with the extending direction of the waveguide tube 2; the rotation angle of the plane mirror 4 is: the plane of the plane mirror 4 forms an angle with the extending direction of the waveguide 2.
In the embodiment of the present invention, the adaptor 6 includes a sleeve 61 sleeved outside the bellows 53, a position on the sleeve 61 corresponding to the bellows 533 is provided with a scale mark 611, and correspondingly, the bellows 533 is provided with a mark corresponding to the scale mark 611 for indicating a position of the push rod, and each position of the mark corresponding to the scale mark 611 can indicate a position of one bellows 53, when the driving motor 51 drives the bellows 53 to move, according to a difference between the two positions, a movement stroke of the bellows 53 can be calculated, that is, a movement stroke of the push rod 521 is calculated, and according to the movement stroke of the push rod 521, a rotation angle of the focusing mirror 3 or the plane mirror 4 can be calculated, so as to visually observe and record research data.
In the debugging stage, the rotation angle of the focusing mirror 3 or the plane mirror 4 corresponding to the expansion amount of different bellows 53 can be recorded, the corresponding relation between the displacement of the push rod 521 and the rotation angle of the focusing mirror 3 or the plane mirror 4 is determined, the push rod is mounted on the sleeve 61, corresponding scale lines 611 are drawn, each scale line 611 corresponds to the position of one push rod 521, and the movement stroke of the push rod 521 is obtained; and the rotation angle of the focusing mirror 3 or the plane mirror 4 can be calculated according to the movement stroke of the push rod 521, so that research data can be visually observed and recorded.
In order to facilitate remote control or automatically control the movement of the driving motor 51, thereby controlling the rotation angle of the focusing mirror 3 or the plane mirror 4 and adjusting the first incident angle; the microwave transmitting antenna of the embodiment of the invention also comprises an instruction input unit and a control unit, wherein the instruction input unit is used for receiving an operation instruction of a user and transmitting the operation instruction to the control unit; then the control unit controls the driving component 5 to work according to the operation instruction, and simultaneously drives the relevant structural component connected with the driving component 5 to move, and finally adjusts the angle of the first incident angle. Alternatively, the control unit may comprise a PLC program.
In order to facilitate the fixation of the focusing mirror 3 and the plane mirror 4, the microwave transmitting antenna according to the embodiment of the present invention, as shown in fig. 1, further includes a first support 7 and a second support 8. First support 7 is used for supporting fixedly focus mirror 3, and first support 7 is located between casing 1 and focus mirror 3, and the one end of first support 7 is connected fixedly with the inner wall of casing 1, focus mirror 3 through first pivot 31 with first support 7 rotates to be connected. The second support 8 is used for supporting and fixing the plane mirror 4, the second support 8 is located between the shell 1 and the plane mirror 4, one end of the second support 8 is fixedly connected with the shell, and the plane mirror 4 is rotatably connected with the second support 8 through a second rotating shaft 41. The extending direction of the first rotating shaft 31 is the same as the extending direction of the second rotating shaft 41 in the opposite direction, so that the focusing mirror 3 and the plane mirror 4 are always arranged oppositely in the rotating process of the focusing mirror 3 and the plane mirror 4, and microwaves reflected and focused by the focusing mirror 3 can be irradiated onto the plane mirror 4.
Optionally, as shown in fig. 1, the first bracket 7 includes two support columns perpendicular to the housing 1, and a positioning structure and a connecting structure are disposed between the support columns and the housing 1. During installation, the supporting column and the shell 1 are positioned through the positioning structure, and the relative position between the supporting column and the shell 1 is determined; the positioning structure may be a pin and a positioning hole located at the corresponding position of the support column and the housing 1. After positioning, the supporting column is fixed on the housing 1 through a connecting structure, which may be a screw. The second bracket 8 has a similar structure to the first bracket 7, and the second bracket 8 also includes two support columns perpendicular to the housing 1, and the detailed structure thereof is not repeated here.
In order to observe the rotation of the focusing mirror 3 and the plane mirror 4 inside the housing 1, an observation window 12 is further provided in the housing 1. The top of the housing 1 is provided with a shackle 13 for lifting. Lifting lug through holes 14 for adjusting levelness are formed in two sides of the shell 1, and in the process of debugging the microwave transmitting antenna, the horizontal position of the microwave transmitting antenna is adjusted by adjusting screws on two sides of a microwave transmitting antenna support, so that the top planes of the focusing mirror 3 and the plane mirror 4 are in the horizontal state.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. An electron cyclotron resonance heating system microwave transmitting antenna, comprising:
the microwave oven comprises a shell, wherein the side wall of the shell is provided with an opening used for being communicated with a microwave source;
the waveguide tube is used for transmitting microwaves generated by a microwave wave source, the first end of the waveguide tube is fixedly connected with the opening, and the second end of the waveguide tube is positioned in the shell;
the focusing mirror is used for focusing and reflecting the microwaves output by the waveguide tube, is rotatably connected with the shell and is arranged opposite to the second end of the waveguide tube;
the plane mirror is used for reflecting the microwaves reflected by the focusing mirror, is rotatably connected with the shell and is arranged opposite to the mirror surface of the focusing mirror;
the driving assembly is used for driving the focusing mirror and/or the plane mirror to rotate.
2. The electron cyclotron resonance heating system microwave transmission antenna of claim 1, wherein the drive assembly comprises:
the number of the driving motors is two, one driving motor is used for driving the focusing mirror to rotate, and the other driving motor is used for driving the plane mirror to rotate;
the transmission structure is used for connecting the driving motor with the focusing mirror, and the driving motor with the plane mirror.
3. The electron cyclotron resonance heating system microwave transmission antenna of claim 2, wherein the transmission structure comprises:
the extension direction of the push rod is perpendicular to the different surface of the rotation axis of the focusing mirror or the plane mirror, one end of the push rod is connected with the driving motor, and the driving motor drives the push rod to move along the extension direction of the push rod;
and one end of the connecting rod is rotatably connected with one end of the push rod, which is far away from the driving motor, and the other end of the connecting rod is rotatably connected with the back surface of the focusing mirror or the plane mirror.
4. The ECR heating system microwave transmitting antenna of claim 3, wherein the driving motor is located outside the housing, the push rod is connected to the driving motor through the housing, the driving assembly further comprises:
the corrugated pipe is sleeved on the outer side of the push rod, one end of the corrugated pipe is hermetically connected with the shell, the other end of the corrugated pipe is closed, one end of the push rod, close to the driving motor, is fixedly connected with the inner side wall of the closed end of the corrugated pipe, and the driving motor is fixedly connected with the outer side wall of the closed end of the corrugated pipe; wherein the bellows is telescopically movable in an extension direction of the bellows.
5. The ECR heating system microwave transmitting antenna of claim 4, wherein the bellows comprises, in order from one end sealingly connected to the housing to a closed end along its extension:
the vacuum sealing flange is used for being connected with the shell in a sealing mode;
the straight pipe section is used for coating the push rod;
a bellows section that can be stretched and compressed in an extending direction of the bellows;
and the connecting section is used for connecting the push rod with the driving motor, and one end of the connecting section close to the driving motor is sealed.
6. The ECR heating system microwave transmitting antenna of claim 5, wherein the maximum amount of expansion and contraction of the bellows is equal to or greater than 30 mm.
7. The microwave transmitting antenna of claim 4, wherein the driving motor is fixedly connected to an outer sidewall of the housing, an adaptor is disposed between the housing and the driving motor, one end of the adaptor is fixedly connected to the outer sidewall of the housing, and the other end of the adaptor is fixedly connected to the driving motor.
8. The microwave transmitting antenna of claim 7, wherein the adaptor comprises a sleeve sleeved outside the corrugated tube, and a viewing port and a scale mark are arranged at a position of the sleeve corresponding to the corrugated section, and the scale mark is used for displaying the position of the push rod.
9. The electron cyclotron resonance heating system microwave transmission antenna of claim 1, further comprising:
the first support is used for supporting and fixing the focusing mirror, one end of the first support is fixedly connected with the inner wall of the shell, and the focusing mirror is rotatably connected with the first support through a first rotating shaft;
the second support is used for supporting and fixing the plane mirror, one end of the second support is fixedly connected with the inner wall of the shell, and the plane mirror is rotatably connected with the second support through a second rotating shaft; and is
The extending direction of the first rotating shaft is parallel to the extending direction of the second rotating shaft.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911106611.3A CN112804805A (en) | 2019-11-13 | 2019-11-13 | Microwave transmitting antenna of electron cyclotron resonance heating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911106611.3A CN112804805A (en) | 2019-11-13 | 2019-11-13 | Microwave transmitting antenna of electron cyclotron resonance heating system |
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| JPH09112873A (en) * | 1995-10-11 | 1997-05-02 | Mitsubishi Electric Corp | Microwave melting apparatus |
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| CN108093550A (en) * | 2016-11-21 | 2018-05-29 | 核工业西南物理研究院 | A kind of new quick rotation high power electronic cyclotron wave transmitting antenna |
| CN207537089U (en) * | 2017-11-07 | 2018-06-26 | 成都航睿科精密机械有限公司 | Pusher with bellows |
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| JPH09112873A (en) * | 1995-10-11 | 1997-05-02 | Mitsubishi Electric Corp | Microwave melting apparatus |
| US20050087556A1 (en) * | 2002-12-02 | 2005-04-28 | Cesare Signorini | Metering device for syrups and other fluids |
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| CN108093550A (en) * | 2016-11-21 | 2018-05-29 | 核工业西南物理研究院 | A kind of new quick rotation high power electronic cyclotron wave transmitting antenna |
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Application publication date: 20210514 |