CN110278649A - The polynary battle array rf wave heating antenna of low radio frequency sheath, high flexibility - Google Patents
The polynary battle array rf wave heating antenna of low radio frequency sheath, high flexibility Download PDFInfo
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- CN110278649A CN110278649A CN201910432381.3A CN201910432381A CN110278649A CN 110278649 A CN110278649 A CN 110278649A CN 201910432381 A CN201910432381 A CN 201910432381A CN 110278649 A CN110278649 A CN 110278649A
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- antenna
- faraday shield
- radio frequency
- current strap
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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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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
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- Spectroscopy & Molecular Physics (AREA)
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Abstract
The invention discloses a kind of low radio frequency sheaths, the polynary battle array rf wave heating antenna of high flexibility, one end of outer conductor is fixedly connected with antenna mounting cabinet back by flange, the front of antenna mounting cabinet is fixedly connected with the back side of Faraday shield cavity, current strap is located at Faraday shield inside cavities, one end of current strap is fixed on Faraday shield cavity inner wall, and inner conductor sequentially passes through outer conductor, antenna mounting cabinet and Faraday shield cavity and the other end of current strap connects.The present invention mainly rotates ion involution heating antenna along tokamak device magnetic field circumferential direction field component, reduces antenna ends radio frequency sheath potential, reduces impurity and generates.Comb teeth-shaped joint-cutting is opened up on Faraday shield partition, the field component for exciting magnetosonic wave is allowed to pass through unaffected, and the insulating ceramics of high dielectric constant is designed between Faraday shield as limiter, plasma and current strap is avoided to form access, mutual coupling between current strap is reduced, coupled power is improved.
Description
Technical field
The present invention relates to magnetic confinement nuclear fusion plasma heating technical field more particularly to a kind of low radio frequency sheaths, Gao Ling
The polynary battle array rf wave heating antenna of activity.
Background technique
Icr Heating (ICRH) is one of very effective auxiliary heating means in tokamak device, can be straight
Connect the ion of effectively heating plasma.For lower hybrid wave and Electron Cyclotron Resonance Heating, due to ion involution
The working frequency of frequency range is lower, and the coupling efficiency issues for improving antenna seem very prominent.From tokamak plasma pair
The absorbent properties of rf wave can be seen thatk // Lesser spectral component bilateral absorption efficiency is very low, it will be carried out back and forth in a device
Multiple reflections, it will form coaxial mode in plasma surface, this will lead to significantly improving for plasma boundary temperature,
But the plasma of aerial accessories and antenna element interaction aggravate simultaneously, and impurity concentration improves, especially antenna ends radio frequency
The high position of potential, impurity concentration is higher, and radiation loss is reinforced, and coupling performance is also poor, final to cause heating effect decline.Separately
Outside, existing magnetic confinement nuclear fusion device in the world at present, due to the demand in space, antenna mount brings very big difficulty, such as
What is neatly compatible with assembly demand, and can consider the promotion of coupled power, is a generally existing difficulty of current home and abroad
Point.Therefore, only Antenna Design is reasonable, promotes the spectrum of exciting current and plasma to match rf wave absorption spectra, antenna
It is low nearby to generate impurity, the reinforcement of antenna coupled power finally just has high heating efficiency.
Summary of the invention
The object of the invention is to remedy the disadvantages of known techniques, provides a kind of low radio frequency sheath, the polynary battle array of high flexibility
Rf wave heating antenna.
The present invention is achieved by the following technical solutions:
A kind of low radio frequency sheath, the polynary battle array rf wave heating antenna of high flexibility, include unit array antenna, the unit battle array day
Line includes antenna mounting cabinet, Faraday shield cavity, current strap, inner conductor and outer conductor, one end of the outer conductor
It is fixedly connected with antenna mounting cabinet back by flange, the front of antenna mounting cabinet and the back side of Faraday shield cavity are solid
Fixed connection, the current strap are located at Faraday shield inside cavities, and one end of current strap is fixed in Faraday shield cavity
On wall, the inner conductor sequentially passes through the other end of outer conductor, antenna mounting cabinet and Faraday shield cavity and current strap
Connection, inner conductor and outer conductor tail portion are fixedly connected with vacuum feed port respectively.
Multiple unit array antennas are set side by side, are mounted on limiter between every two adjacent unit array antenna,
The upper and lower side of the Faraday shield cavity of every two adjacent unit array antenna is fixedly connected, each limiter with its two sides
The upper and lower side of Faraday shield cavity be fixedly connected, multiple unit array antennas form polynary array antenna after being fixedly connected.According to
Each fusion facility heating power and requirements of installation space, the number of selecting unit array antenna.
The Faraday shield cavity and current strap is rotated each along tokamak device magnetic field circumferential direction field component
It is connected and fixed after identical angle.
The limiter is using arc panel made of high-dielectric-constant ceramics insulating materials, and limiter is along radial height
Faraday shield cavity front end face 5mm out.
The Faraday shield cavity and the barricade on front side of it are bolted to connection, in each Faraday shield
The two sides of cavity open up several comb teeth-shaped joint-cuttings.
Current strap uses one end feed-in, and one end is fixedly connected.Each unit array antenna Faraday shield and antenna mounting case
Body is attached, and between every two unit array antenna and two sides are required to installation limiter, between unit array antenna by it is upper,
Lower both ends fixation forms polynary array antenna.
Current strap rotates by a certain angle according to tokamak device magnetic field circumferential direction field component, and one end is fixed on antenna branch
It is grounded on support cabinet, one end is connect with transmission line inner conductor carries out rf wave feed-in.
According to identical direction, identical angle is rotated for Faraday shield and current strap, then with antenna mounting case
Body is fixed, and Faraday shield cavity two sides along pole to opening up comb teeth shape joint-cutting.
Limiter needs to be higher by Faraday shield along radial direction after fixing using high-dielectric-constant ceramics insulating materials
Front end face 5mm.
Each unit array antenna is mainly by Faraday shield, current strap, antenna mounting cabinet, limiter and transmission line group
At.
Transmission line inner conductor one end and current strap are attached fixation, and other end is attached with vacuum feed port；It leads outside
Body one end is attached with antenna mounting box flange, and the other end is connected and fixed with vacuum feed port outer conductor.
The invention has the advantages that the present invention is mainly to ion involution heating antenna along tokamak device magnetic field toroidal field
Component rotation, reduces antenna ends radio frequency sheath potential, reduces impurity and generates, opens up in Faraday shield cavity along circumferential two sides
Comb teeth shape joint-cutting, improve antenna rf field couple along circumferential plasma, allow excitation magnetosonic wave field component not by
Ground is influenced to pass through；In addition, the insulating ceramics for designing high dielectric constant between Faraday shield avoids plasma as limiter
Body and current strap form access, reduce mutual coupling between current strap, improve coupled power.It is set between polynary array antenna using modularization
Meter, convenient for being selected according to each rating of set and space requirement, greatly improves flexible design degree.Each faraday screen
It covers and carries out modularized design with current strap, antenna can flexibly be mounted and dismounted according to window shape and size.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is invention unit array antenna sectional view.
Fig. 3 is internal and external conductor and vacuum feed port Assembly linking graph.
Fig. 4 is main view of the present invention.
Specific embodiment
As shown in Figure 2,3, the polynary battle array rf wave heating antenna of a kind of low radio frequency sheath, high flexibility includes unit battle array day
Line, the unit array antenna include antenna mounting cabinet 1, Faraday shield cavity 5, current strap 3, inner conductor 4 and lead outside
One end of body 2, the outer conductor 2 is fixedly connected with 1 back of antenna mounting cabinet by flange, and antenna mounting cabinet 1 is just
Face is fixedly connected with the back side of Faraday shield cavity 5, and the current strap 3 is located at 5 inside of Faraday shield cavity, current strap
3 one end is fixed on 5 inner wall of Faraday shield cavity, and the inner conductor 4 sequentially passes through outer conductor 2, antenna mounting cabinet 1
It is connect with Faraday shield cavity 5 with the other end of current strap 3, inner conductor 4 and 2 tail portion of outer conductor are solid with vacuum feed port 7 respectively
Fixed connection.
As shown in Fig. 1,4, multiple unit array antennas are set side by side, are pacified between every two adjacent unit array antenna
Equipped with limiter 6, the upper and lower side of the Faraday shield cavity 5 of every two adjacent unit array antenna is fixedly connected, each limit
Device 6 processed is fixedly connected with the upper and lower side of the Faraday shield cavity 5 of its two sides, and multiple unit array antennas are formed after being fixedly connected
Polynary array antenna.According to each fusion facility heating power and requirements of installation space, the number of selecting unit array antenna.
The Faraday shield cavity 5 and current strap 3 is revolved each along tokamak device magnetic field circumferential direction field component
It is connected and fixed after turning identical angle.
The limiter 6 is using arc panel made of high-dielectric-constant ceramics insulating materials, and limiter is along radial direction
It is higher by Faraday shield cavity front end face 5mm.
The Faraday shield cavity 5 and the barricade 8 on front side of it are bolted to connection, in each faraday screen
The two sides for covering cavity 5 open up several comb teeth-shaped joint-cuttings 9.
As shown in Figure 1, totally 4 groups of modules form, and every module mainly includes antenna mounting cabinet 1, outer conductor 2, electric current
Band 3, inner conductor 4, faraday screen shield plate 5, limiter 6, vacuum feed port 7.During the installation process, first antenna mounting cabinet 1
It is fixed in assembly support by tooling, transmission line outer conductor 2 is connect with antenna mounting cabinet by external flanges, current strap 3
It is fixed on antenna mounting cabinet according to the device circumferential direction field component parameter one end that rotates by a certain angle, transmission line inner conductor 4 passes through
2 one end of outer conductor is fixed with 3 other end of current strap, passes through direction identical with current strap, identical angle rotation after fixed
It is connected and fixed after Faraday shield 5 by bolt and antenna mounting cabinet, limit is then fixed on the outside of antenna Faraday shield
Device 6 processed, transmission line inner and outer conductor are attached fixation with the vacuum feed port 7 of tail portion respectively, form a unit battle array day after complete
Line.According to above-mentioned same method, remaining unit array antenna is successively installed, last every two unit array antenna passes through upper and lower
End is fixed, and one piece of limiter 6 is installed between every two unit battle array, eventually forms polynary array antenna.
The present invention indulges field component by rotating certain angle to antenna Faraday shield and current strap according to tokamak circumferential direction
Degree, masks Faraday shield unnecessary field component, reduces radio frequency sheath, reduces impurity and generates；Faraday shield every
Comb teeth-shaped joint-cutting is opened up on plate, allows the field component for exciting magnetosonic wave to pass through unaffected, in each Faraday shield two sides
Design installation high-dielectric-constant ceramics, avoid plasma and current strap from forming this connection circuit, improve coupled power and heating
Efficiency；Each Faraday shield and current strap carry out modularized design, can carry out spirit to antenna according to window shape and size
Installation and removal living.
Claims (5)
1. the polynary battle array rf wave heating antenna of a kind of low radio frequency sheath, high flexibility, it is characterised in that: it include unit array antenna,
The unit array antenna includes antenna mounting cabinet, Faraday shield cavity, current strap, inner conductor and outer conductor, described
One end of outer conductor be fixedly connected with antenna mounting cabinet back by flange, the front of antenna mounting cabinet and faraday screen
The back side for covering cavity is fixedly connected, and the current strap is located at Faraday shield inside cavities, and one end of current strap is fixed on method
Draw on shielding cavity inner wall, the inner conductor sequentially pass through outer conductor, antenna mounting cabinet and Faraday shield cavity with
The other end of current strap connects, and inner conductor and outer conductor tail portion are fixedly connected with vacuum feed port respectively.
2. a kind of low radio frequency sheath according to claim 1, the polynary battle array rf wave heating antenna of high flexibility, feature exist
In: multiple unit array antennas are set side by side, are mounted on limiter between every two adjacent unit array antenna, by every two
The upper and lower side of the Faraday shield cavity of a adjacent unit array antenna is fixedly connected, farad of each limiter with its two sides
The upper and lower side of shielding cavity is fixedly connected, and multiple unit array antennas form polynary array antenna after being fixedly connected.
3. a kind of low radio frequency sheath according to claim 1, the polynary battle array rf wave heating antenna of high flexibility, feature exist
Each along tokamak device magnetic field circumferential direction field component rotate in: the Faraday shield cavity and current strap identical
It is connected and fixed after angle.
4. a kind of low radio frequency sheath according to claim 1, the polynary battle array rf wave heating antenna of high flexibility, feature exist
In: the limiter is using arc panel made of high-dielectric-constant ceramics insulating materials, and limiter is along radially raised method
Draw shielding cavity front end face 5mm.
5. a kind of low radio frequency sheath according to claim 1, the polynary battle array rf wave heating antenna of high flexibility, feature exist
In: the Faraday shield cavity and the barricade on front side of it are bolted to connection, in each Faraday shield cavity
Two sides open up several comb teeth-shaped joint-cuttings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432381.3A CN110278649B (en) | 2019-05-23 | 2019-05-23 | Low-radio-frequency sheath and high-flexibility multi-element array radio-frequency wave heating antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432381.3A CN110278649B (en) | 2019-05-23 | 2019-05-23 | Low-radio-frequency sheath and high-flexibility multi-element array radio-frequency wave heating antenna |
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| CN110278649A true CN110278649A (en) | 2019-09-24 |
| CN110278649B CN110278649B (en) | 2021-05-11 |
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| CN201910432381.3A Active CN110278649B (en) | 2019-05-23 | 2019-05-23 | Low-radio-frequency sheath and high-flexibility multi-element array radio-frequency wave heating antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864355A (en) * | 2020-07-31 | 2020-10-30 | 中国科学院合肥物质科学研究院 | Radio frequency wave resonant heating antenna |
| CN113411943A (en) * | 2021-05-17 | 2021-09-17 | 中国科学院合肥物质科学研究院 | Current compensation device for reducing heating antenna radio frequency sheath |
| CN113612012A (en) * | 2021-07-28 | 2021-11-05 | 中国科学院合肥物质科学研究院 | Movable grid type surface wave ion cyclotron antenna structure |
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| JPS59128797A (en) * | 1983-01-14 | 1984-07-24 | 株式会社日立製作所 | Antenna |
| JPH01209699A (en) * | 1988-02-16 | 1989-08-23 | Japan Atom Energy Res Inst | Antenna for high frequency heating |
| CN102543223A (en) * | 2012-02-15 | 2012-07-04 | 中国科学院等离子体物理研究所 | ICRF (Ion Cyclotron Resonance Frequency) antenna structure with angle-adjustable faraday shield cooling tube |
| CN103943958A (en) * | 2014-04-11 | 2014-07-23 | 中国科学院等离子体物理研究所 | Conjugate antenna structure oriented towards plasma coupling impedance rapid changes |
| CN106373619A (en) * | 2016-08-31 | 2017-02-01 | 中国科学院等离子体物理研究所 | Antenna protection limiter structure |
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2019
- 2019-05-23 CN CN201910432381.3A patent/CN110278649B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59128797A (en) * | 1983-01-14 | 1984-07-24 | 株式会社日立製作所 | Antenna |
| JPH01209699A (en) * | 1988-02-16 | 1989-08-23 | Japan Atom Energy Res Inst | Antenna for high frequency heating |
| CN102543223A (en) * | 2012-02-15 | 2012-07-04 | 中国科学院等离子体物理研究所 | ICRF (Ion Cyclotron Resonance Frequency) antenna structure with angle-adjustable faraday shield cooling tube |
| CN103943958A (en) * | 2014-04-11 | 2014-07-23 | 中国科学院等离子体物理研究所 | Conjugate antenna structure oriented towards plasma coupling impedance rapid changes |
| CN106373619A (en) * | 2016-08-31 | 2017-02-01 | 中国科学院等离子体物理研究所 | Antenna protection limiter structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864355A (en) * | 2020-07-31 | 2020-10-30 | 中国科学院合肥物质科学研究院 | Radio frequency wave resonant heating antenna |
| CN111864355B (en) * | 2020-07-31 | 2021-09-24 | 中国科学院合肥物质科学研究院 | Radio frequency wave resonant heating antenna |
| CN113411943A (en) * | 2021-05-17 | 2021-09-17 | 中国科学院合肥物质科学研究院 | Current compensation device for reducing heating antenna radio frequency sheath |
| CN113612012A (en) * | 2021-07-28 | 2021-11-05 | 中国科学院合肥物质科学研究院 | Movable grid type surface wave ion cyclotron antenna structure |
| CN113612012B (en) * | 2021-07-28 | 2023-09-29 | 中国科学院合肥物质科学研究院 | Movable grid type surface wave ion cyclotron antenna structure |
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| CN110278649B (en) | 2021-05-11 |
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