CN103995159B - A kind of high power long pulse electron cyclotron heating resonator system fictitious load - Google Patents
A kind of high power long pulse electron cyclotron heating resonator system fictitious load Download PDFInfo
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- CN103995159B CN103995159B CN201310054777.1A CN201310054777A CN103995159B CN 103995159 B CN103995159 B CN 103995159B CN 201310054777 A CN201310054777 A CN 201310054777A CN 103995159 B CN103995159 B CN 103995159B
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- circular cylinder
- hollow circular
- microwave
- fictitious load
- electron cyclotron
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 210000002381 Plasma Anatomy 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229950000845 Politef Drugs 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000001367 Arteries Anatomy 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 210000003462 Veins Anatomy 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
Abstract
The present invention relates to a kind of high power long pulse electron cyclotron heating resonator system fictitious load, it is characterised in that: include hollow circular cylinder；The axial one end of hollow circular cylinder is microwave input port, and the axial other end of hollow circular cylinder is provided with reflecting mirror, and reflecting mirror is to bend towards the convex lens within hollow circular cylinder, is provided with one protruding at convex lens center of surface；Hollow circular cylinder inwall spirals and is wound with internal watercourses, and internal watercourses is connected with the outside water route being arranged on hollow circuit cylinder external body.The radius of curvature of convex lens is 216.3mm, and protruding radius of curvature is 28.75mm, and protruding height is 7.86mm.The present invention can meet high power long pulse Electron Cyclotron Resonance Heating system microwave power measurement requirement, and power capacity is 500kW/3s, and simple in construction.
Description
Technical field
The present invention relates to a kind of high power long pulse electron cyclotron heating resonator system fictitious load, particularly relate to
And one relates to Electron Cyclotron Resonance Heating system output power in plasma heating and measures and demarcate required
The fictitious load that power capacity is 500kW/3s, frequency is 50-170GHz.
Background technology
In controlled nuclear fusion research field, in order to make plasma temperature reach firing temperature, it is necessary to use
Auxiliary heater means, thus realize the nuclear fusion reaction that can control.Electron Cyclotron Resonance Heating (ECRH)
Because of its have that the efficiency of heating surface is high, system flexibly, local heating and the feature such as controllability is strong, used widely
Study in fusion.
In Electron Cyclotron Resonance Heating system, in order to describe electron cyclotron wave plasma more accurately
The effects such as heating and electric current driving, need to measure the microwave power of system and demarcate.HL-2A fills
Put the microwave feature of single set ECRH system be that power is high and pulsewidth length (power 500kW and more than, pulsewidth
3s), cause microwave power directly measures difficulty relatively greatly, needs microwave energy is converted into other form
Energy measures again, and conventional way is that microwave energy is converted into the heat energy of water, then throughput full-boiled process
Measure.Accordingly, it would be desirable to research is born for the vacation of high power long pulse Electron Cyclotron Resonance Heating system
Carry, microwave energy is converted into the heat energy of water.
Fictitious load needs to meet claimed below: (1) power capacity is big, it is possible to meet power 500kW, arteries and veins
Wide 3s microwave power measurement requirement；(2) energy conversion efficiency is high, can be converted into efficiently by microwave energy
The energy of water, to ensure certainty of measurement.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of for Electron Cyclotron Resonance Heating system microwave merit
The requirement that rate is measured and demarcated, it is possible to meet high power long pulse microwave power measurement requirement and energy conversion
Efficiency is high, enables measurement system to measure the fictitious load of microwave power accurately.
For solving above-mentioned technical problem, one high power long pulse electron cyclotron of the present invention heating resonator system
Fictitious load, it is characterised in that: include hollow circular cylinder；The axial one end of hollow circular cylinder is microwave input
Port, the axial other end of hollow circular cylinder is provided with reflecting mirror, and reflecting mirror is for bending towards in hollow circuit cylinder body
The convex lens in portion, is provided with one protruding at convex lens center of surface；Hollow circular cylinder inwall spirals and is wound with internal water
Road, internal watercourses is connected with the outside water route being arranged on hollow circuit cylinder external body.
The radius of curvature of convex lens is 216.3mm, and the radius of curvature of described projection is 28.75mm, protruding height
Degree is 7.86mm.
Hollow circular cylinder axial length is 1517mm, and the overall diameter of described hollow circular cylinder is 276mm.
Internal watercourses is 4 groups, and often group water route is respectively provided with a water inlet and an outlet, described 4
Water inlet is connected with the water inlet pipe in outside water route, described 4 outlets and the outlet pipe in described outside water route
Connect.
The water pipe of internal watercourses is politef water pipe.
The material of hollow circular cylinder is rustless steel.
The present invention can meet high power long pulse Electron Cyclotron Resonance Heating system microwave power measurement and want
Asking, power capacity is 500kW/3s, and simple in construction.
Accompanying drawing explanation
Fig. 1 is a kind of high power long pulse electron cyclotron heating resonator system fictitious load provided by the present invention
Schematic diagram.
Fig. 2 is the schematic diagram of convex lens.
In figure: 1 is microwave input port, 2 is hollow circular cylinder, and 3 is outside water route, and 4 is internal water
Road, 5 is reflecting mirror.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
The structure of fictitious load is as it is shown in figure 1, include hollow circular cylinder 2；Hollow circular cylinder 2 axial one
Hold and be connected, as microwave input port 1 with transmission system wave guiding elements.Wave guiding elements and microwave input port
Mouth 1 realizes seamless link by custom-designed changeover portion.The axial other end of hollow circular cylinder 2 passes through
Screw is fixed with reflecting mirror 5；Hollow circular cylinder 2 inwall spirals and is wound with internal watercourses 4, internal watercourses 4
It is connected with the outside water route 3 being arranged on outside hollow circular cylinder 2.
Microwave input port 1 is by the wave guiding elements corrugated waveguide of the changeover portion of particular design with transmission system
It is connected, thus accepts the microwave from the output of Electron Cyclotron Resonance Heating system wave source device gyrotron, and then
Carry out microwave power measurement；Hollow circular cylinder ensure that the microwave propagation at free space, cylindrical chi
Very little can ensure that microwave before traveling to reflecting mirror not with cylinder contact internal walls；Water route is divided into internal water
Road 4 and outside water route 3, internal watercourses 4 is wrapped in whole cylinder inwall to ensure filling of microwave energy
Subsystem and prevent microwave leakage, outside water route 3 is as the input and output side of water, it is ensured that energy is timely
It is taken away by the water；Reflecting mirror 5 can make microwave beam dissipate, thus reduces Microwave Power Density, sends out simultaneously
The microwave dissipated will propagate to fictitious load inwall, and energy is wrapped in the water pipe of inwall and absorbs, and is converted into water
Heat energy.
In fictitious load design process, the curved design of size and reflecting mirror for determining fictitious load, need to divide
Analysis microwave is in the propagation characteristic of free space.In this example, gyrotron output microwave frequency is 68GHz, leads
Ripple element is corrugated waveguide, and microwave transmission mode in corrugated waveguide is hybrid guided mode HE11Mould.HEllMould exists
The propagation of free space can represent with the propagation of approximation Gaussian mode.Wherein, abscissa Z is microwave
The direction of propagation (axially), r is radial direction, space certain point (Z, r) the intensity color of place's microwave
Represent.At Z=0, microwave power concentrates near the r=0 of center substantially, along with the increase of Z, microwave merit
Rate gradually dissipates.During design fictitious load, need the transmission characteristic according to microwave, by design
Reasonably cylinder length and radius ensure microwave before arriving reflecting mirror not with cylinder contact internal walls, with
Time reflecting mirror curved surface need to be designed according to power distribution and the phase characteristic etc. of microwave at reflecting mirror.
In this example, hollow circular cylinder axial length is 1517mm, and the overall diameter of hollow circular cylinder is 276mm.
Reflecting mirror is the critical component in fictitious load, is designed to convex lens form, it is ensured that can after microwave reflection
Diffuse in whole fictitious load inner space.The structure of reflecting mirror is as in figure 2 it is shown, whole curved surface is essentially
Parabola, and it is internal to bend towards hollow circular cylinder 2, has a projection, parabola and projection at center of surface
The characteristic such as parameter such as intensity and phase place of the parameter Main Basis microwave such as curvature and radius of curvature is designed.
Reflecting mirror uses the processing of duralumin material, and the lossy microwave caused by reflecting mirror can be made the least, thus
Ensure certainty of measurement.In this example, the radius of curvature of convex lens is 216.3mm, and protruding radius of curvature is
28.75mm, protruding height is 7.86mm.
The agent structure hollow circular cylinder 2 of fictitious load is made up of rustless steel, and fictitious load indoor design has four
Independent water route, is made up of the politef water pipe being wrapped in fictitious load inwall, can well absorb
Microwave power, it is ensured that certainty of measurement, water pipe size and discharge can ensure that microwave merit through design simultaneously
While rate is completely absorbed, the temperature rise of water is unlikely to too high；Outside water route 3 is made up of rustless steel, and water exists
Water inlet one is divided into four, is flowed out after water outlet is combined into a road by internal watercourses 4；Fictitious load
Size is through specialized designs and calculating, it is ensured that microwave Free propagation in fictitious load.
The alignment procedure of fictitious load is described below.
Fictitious load, as the vitals of microwave power measurement, needs to ensure the wave vector side of microwave in use
To the dead in line with fictitious load, to ensure the accuracy of microwave power measurement, need the most before the use
Fictitious load is collimated.Mainly include following step: (1) is by fictitious load and transmission system
Wave guiding elements is attached by the changeover portion of particular design, takes off reflecting mirror simultaneously, by the heat of same size
Quick paper substitutes；(2) parameter of regulation gyrotron makes to export the microwave of about 150kW/10ms, observation heat
The distribution situation of quick paper microwave, finds out the central point of power distribution；(3) if central point is at the axle of fictitious load
On line, then alignment procedure completes.Otherwise then need the position of the position adjustment fictitious load according to central point,
Repeat process above until having collimated.
Claims (1)
1. a high power long pulse electron cyclotron heating resonator system fictitious load, it is characterised in that: in including
Hollow cylinder；The axial one end of described hollow circular cylinder is microwave input port, and described hollow circular cylinder is axial
The other end be provided with reflecting mirror, described reflecting mirror is to bend towards the convex lens within hollow circular cylinder, described convex lens
One it is provided with protruding at center of surface；Described hollow circular cylinder inwall spirals and is wound with internal watercourses, described inside
Water route is connected with the outside water route being arranged on hollow circuit cylinder external body；
The radius of curvature of described convex lens is 216.3mm, and the radius of curvature of described projection is 28.75mm, protruding
It is highly 7.86mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310054777.1A CN103995159B (en) | 2013-02-20 | A kind of high power long pulse electron cyclotron heating resonator system fictitious load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310054777.1A CN103995159B (en) | 2013-02-20 | A kind of high power long pulse electron cyclotron heating resonator system fictitious load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103995159A CN103995159A (en) | 2014-08-20 |
| CN103995159B true CN103995159B (en) | 2016-11-30 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB598198A (en) * | 1944-06-17 | 1948-02-12 | Sperry Gyroscope Co Inc | Improvements in and relating to micro-wave wattmeters |
| US5186540A (en) * | 1991-12-30 | 1993-02-16 | Raytheon Company | Power measurement calorimeter |
| CN101126780A (en) * | 2007-10-12 | 2008-02-20 | 核工业西南物理研究院 | M-w grade microwave power instrumentation system based on calorimetric method |
| CN101281221A (en) * | 2008-05-12 | 2008-10-08 | 中国科学院等离子体物理研究所 | High-power microwave water load |
| CN101566650A (en) * | 2008-04-21 | 2009-10-28 | 东莞市光华实业有限公司 | Heat loss self-compensating terminal type water load microwave high power meter |
| CN101726659A (en) * | 2008-10-28 | 2010-06-09 | 西安恒达微波技术开发公司 | Microwave high power testboard |
| CN102411074A (en) * | 2011-08-03 | 2012-04-11 | 广东威特真空电子制造有限公司 | High power waveguide impedance transformer |
| CN102435837A (en) * | 2011-09-22 | 2012-05-02 | 东南大学 | Online detector for micro electro mechanical system (MEMS) coupling degree-reconfigurable microwave power and preparation method thereof |
| CN202275112U (en) * | 2011-10-28 | 2012-06-13 | 电子科技大学 | Mixer for measuring microwave power |
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB598198A (en) * | 1944-06-17 | 1948-02-12 | Sperry Gyroscope Co Inc | Improvements in and relating to micro-wave wattmeters |
| US5186540A (en) * | 1991-12-30 | 1993-02-16 | Raytheon Company | Power measurement calorimeter |
| CN101126780A (en) * | 2007-10-12 | 2008-02-20 | 核工业西南物理研究院 | M-w grade microwave power instrumentation system based on calorimetric method |
| CN101566650A (en) * | 2008-04-21 | 2009-10-28 | 东莞市光华实业有限公司 | Heat loss self-compensating terminal type water load microwave high power meter |
| CN101281221A (en) * | 2008-05-12 | 2008-10-08 | 中国科学院等离子体物理研究所 | High-power microwave water load |
| CN101726659A (en) * | 2008-10-28 | 2010-06-09 | 西安恒达微波技术开发公司 | Microwave high power testboard |
| CN102411074A (en) * | 2011-08-03 | 2012-04-11 | 广东威特真空电子制造有限公司 | High power waveguide impedance transformer |
| CN102435837A (en) * | 2011-09-22 | 2012-05-02 | 东南大学 | Online detector for micro electro mechanical system (MEMS) coupling degree-reconfigurable microwave power and preparation method thereof |
| CN202275112U (en) * | 2011-10-28 | 2012-06-13 | 电子科技大学 | Mixer for measuring microwave power |
Non-Patent Citations (2)
| Title |
|---|
| ECR离子源中的微波功率在线测量;周长庚等;《强激光与粒子束》;20050930;第17卷(第9期);第1394-1398页 * |
| HL-2A 装置 ECRH 系统的微波功率测量;陆志鸿等;《核聚变与等离子体物理》;20080331;第28卷(第1期);第54-59页 * |
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