CN104202903B - Flat metal film loading device - Google Patents
Flat metal film loading device Download PDFInfo
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- CN104202903B CN104202903B CN201410457940.3A CN201410457940A CN104202903B CN 104202903 B CN104202903 B CN 104202903B CN 201410457940 A CN201410457940 A CN 201410457940A CN 104202903 B CN104202903 B CN 104202903B
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- load
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- metal film
- reflux
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Abstract
The invention provides a flat metal film loading device which comprises a load, a load cathode and a load anode. The load is a flat metal film in a straightened state with one end electrically connected with the load cathode while the other end electrically connected with the load anode; the loading device further comprises a reflux unit located between the load cathode and the load anode, the reflux unit comprises a reflux column base and two reflux columns, the reflux columns are symmetrically arranged on two sides of the flat metal film, the distance between the reflux columns and the flat metal film is adjustable, one ends of the reflux columns are in electric contact with the load anode while the other ends of the same are electrically with the reflux column base, and the reflux column base is electrically connected with the load cathode. The development situation of instability existing on two sides of a load flat under stress can be researched, and relevant research results can be applied to analysis of development situation of instability of a MagLIF sleeve target under the action of a steady magnetic field.
Description
Technical field
The present invention relates to the load device or load experiment device of pulsed power accelerator, and in particular to one kind is for studying
The load design of Z pinch process unstability development.
Background technology
Z constrictions (Z-Pinch) refer to that the poloidal magnetic field plasma produced by the pulse current in Z-direction is carried out radially
Compression.Used as a kind of efficient x-ray source, Z constrictions are in inertial confinement fusion, high-energy-density physics and laboratory celestial body thing
The aspects such as reason are used widely.In traditional Z constrictions experiment, generally use wire array load and tested.As existed at present
The Z constrictions experiment carried out on " Qiangguang-I " accelerator, is exactly using plane and cylindricality filament array load.In high light I accelerators
After the electric current in memory cell is entreated through pulse compression unit, pulse-forming line, form a peak value and be more than 1MA, half is a width of
The current impulse of 100ns magnitudes, is put in the load in vacuum chamber, and wire is supported under high current effect,
Experience the phase transition process from solid-state to plasma rapidly, produced plasma is under poloidal magnetic field effect to load centre
Implosion, produces X-ray (Fig. 1).Z constriction experiments are carried out with this kind of load, X-ray conversion efficiency and radiant power are higher.But from
The situation of photograph sees that produced constriction post has larger unstability.This is the plasma due in pinch process
Body is to the instable influence of magnetohydrodynamics suffered by the accumulation process of axle center so that plasma sheath structure deforms
The result even destroyed.
In recent years, U.S. Holy Land Asia laboratory proposed a kind of referred to as magnetization sleeve target inertial confinement fusion
(MagLIF) new technology, this technology is intended to realize that high-gain is lighted a fire under 26MA driving currents that pertinent literature shows, restricts this
One of most important factor of the technology of kind development is the unstability development of sleeve target.
In recent years, be engaged in the scientific research personnel of Z constrictions research using in monofilament, double-deck even load structural research pinch process not
The physical process of stabilization sexual development, with the adverse effect for overcoming it to bring, but correlative study achievement is difficult to apply to analysis
MagLIF sleeves target instable state of development in the case where steady magnetic field effect is caused.
The content of the invention
The present invention provides a kind of outer quick-fried type planar metal film load, can be used for studying MA magnitude (high light I) Z constrictions
In experiment, when load Impact direction is identical with unstability developing direction, the unstability evolution of load.
Technical solution of the invention is：
Planar metal film load device, including load, load negative electrode and loading anode, it is characterized in that：It is described
It is planar metal film to load, the planar metal film be in straight condition, one end with load negative electrode electrically connect, the other end with bear
Carry anode electrical connection；
The load device also includes the reflux being located between load negative electrode and loading anode, the reflux bag
Include reflux column base and two reflux columns, described two reflux columns be symmetricly set on the both sides of planar metal film and with plane gold
Category the distance between film is adjustable, and one end and the loading anode of the reflux column make electrical contact with, the other end of the reflux column with return
Fluidization tower base is electrically connected, and the reflux column base is electrically connected with load negative electrode.
Above-mentioned loading anode includes positive plate and clamping device, and the positive plate is electrically connected with reflux column, the clamping
Device is fixed on positive plate, and the center of the positive plate offers through hole, and one end of the planar metal film is by logical
Hole is fixedly connected with clamping device.
Above-mentioned clamping device includes fixed seat, two semicolumns, two folders axle clip and shell fragments, the material of the fixed seat
Expect to be non-metal insulating material, described two semicolumns interlock to form folder axle, the folder axle is installed in fixed seat and two ends are stretched
Go out fixed seat；
The folder axle clip includes body and is arranged on rotating shaft vertical with body on body, and two folder axle clips lead to
The both sides that rotating shaft is installed on fixed seat are crossed, the central shaft of the installation site less than folder axle of the rotating shaft is also opened up on the body
There is the groove towards folder axle opening, the groove is the deep-slotted chip breaker centered on rotating shaft, radial dimension and the folder of the deep-slotted chip breaker
Axially it is adapted to, when clip is rotated, the deep-slotted chip breaker can wrap the folder axle for stretching out fixed seat；
The shell fragment is arranged on fixed seat edge and is stretched out towards positive plate through hole direction, and the planar metal film is by through hole
After passing along shell fragment enter fixed seat in folder axle by folder axis clamping.
Above-mentioned load negative electrode includes cathode substructure, negative electrode jaws and fixed cover；
The negative electrode jaws includes two half-conicals being interlocked, and described two half-conicals are arranged on cathode substructure, institute
Stating the inner surface of fixed cover includes circular conical surface and the face of cylinder being connected with the big end of circular conical surface, and the fixed cover is small from negative electrode jaws
End is inserted in, two half-conicals of the circular conical surface portion compresses negative electrode jaws of fixed cover during being inserted in, the cylinder face of fixed cover
Divide and be threadedly coupled with cathode substructure；
The bellmouth being adapted with lead to the hole site on positive plate and size, the negative electrode are provided with the reflux column base
Jaws stretches into one end of clamping plane metallic film in bellmouth, and the negative electrode jaws coordinates with bellmouth circular conical surface.
Above-mentioned cathode substructure and negative electrode jaws are two discrete devices.
Packing ring is additionally provided between above-mentioned cathode substructure and negative electrode jaws.
Above-mentioned planar metal film is aluminium film or tungsten film, and its width is that scope is 0.2-1.5cm, and length is 8-10cm, thick
Degree is less than 50 μm.
Compared with prior art, advantage is the present invention：
1st, planar metal film load, as a critical component in Z pinch instability research experiments, is that it can
When there is stress to study load plane both sides, instable development.Correlative study result can apply to analysis
MagLIF sleeves target unstability development in the case where steady magnetic field effect is caused.
2nd, at positive plate of the present invention clamping device unique design so that the present invention can meet due to pressure difference make negative electrode to
When anode is moved, it is ensured that the desired physical considerations that thin film planar is straight, under a high vacuum (10-2Pa), whole load plane uniform force,
Be not distorted deformation.
3rd, present invention load negative electrode and reflux column base are coordinated using circular conical surface so that the present invention can be flat to load thin film
Face direction is finely adjusted, and it is kept the depth of parallelism high with probe laser direction；The device load is in " Qiangguang-I " accelerator
On when carrying out Z pinch instability research experiments, the difference of load two sides unstability development when by different power can be observed
It is different.
4th, mechanical structure of the present invention is simple, easy for installation, stable and reliable in work, field stripping is quick, meets requirement of experiment.
Brief description of the drawings
Fig. 1 is high light I structures and Z constrictions experiment schematic diagram；
Fig. 2 planar metals film loads assembling structure schematic diagram；
Fig. 3 is loading anode, reflux column structural representation；
Fig. 4 is double semicolumn folder axle fixing structure and shell fragment mounting structure schematic diagram；
Fig. 5 is the view after double semicolumn folder axle fixing structures and shell fragment fastening；
Fig. 6 is to remove the clamping structure figure after folder axle clip；
Fig. 7 loads negative electrode and film jaws schematic diagram；
Reference is：1- Linear transformer drivers (LTD), 2- centers energy-storage units, 3- pulse compressions line, 4- pulses
Form line, 5- loads, 6- vacuum chambers, 51- clamping devices, 52- shell fragments, 53-planar metal film, 54- positive plates, 55- time
Fluidization tower, 56- reflux columns base, 57- coils trim ring, 58- loads negative electrode, 511- fixed seats, 512- folders axle, 513- folder axles are fixed
Button, 581- cathode substructures, 582- packing rings, 583- fixed covers, 584- negative electrode jaws.
Specific embodiment
Preferred embodiment of the invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 show high light I structures and Z constrictions experiment schematic diagram, including the Linear transformer driver being sequentially connected
(LTD), central energy-storage units 2, pulse compression line 3, pulse-forming line 4 and load 5, wherein load 5 can be used the present invention to be carried
The planar metal film support structures of confession, similar with traditional Z constrictions experimental technique, discharge-induced explosion experiment is needed in vacuum environment
Carry out, with reduce electric discharge instantaneous air puncture to explode quality influence.
Planar metal film of the present invention is made up of metal materials such as aluminium, tungsten, and its width is that scope is 0.2-1.5cm, effectively
Length 2cm, physical length is generally required more than 10cm to ensure the effective connection with negative electrode jaws, anode fixed structure, thickness
Generally less than 50 μm, there are 20 μm, 30 μm and 50 μm equal-specifications.
As Figure 2-3, planar metal film load device of the invention, its basic structure include load, load negative electrode,
Loading anode and reflux, it is planar metal film 53 to load, and planar metal film is in straight condition, one end and load negative electrode
Electrical connection, the other end is electrically connected with loading anode；Reflux is located between load negative electrode and loading anode, including reflux column bottom
Seat 56 and two reflux columns 55, two reflux columns are symmetricly set on the both sides of planar metal film and between planar metal film
Distance it is adjustable, one end of reflux column is made electrical contact with loading anode, and the other end of reflux column is electrically connected with reflux column base, backflow
Post base is electrically connected with load negative electrode 58.
Based on the improvement to above basic scheme, the present invention is in order to solve during vacuum drawn due between anode and cathode
Distance shrink caused by thin film planar be difficult to the problem for keeping.For this loading anode end is designed as one kind by two semicolumns
The folder axle fixing structure of composition and the elastic piece structure for preventing load plane from deforming, it is specific as follows：
As shown in Figure 2, Figure 4 shows, loading anode of the present invention include positive plate 54 and clamping device 51, the inner side of positive plate with return
Fluidization tower is electrically connected, and clamping device is fixed on the outside of positive plate, and the center of positive plate offers through hole, planar metal film
One end with load negative electrode electrically connect after between two reflux columns by again by after through hole by gripping means grips.Clamping device
Including 511, two semicolumns of fixed seat, two folders axle clip and shell fragments 52, two semicolumns interlock to form a folder axle 512
It is installed in fixed seat and fixed seat is stretched out at two ends, folder axle clip includes body and is arranged on vertical with body on body turning
Axle, two folder axle clips 513 are installed on the both sides of fixed seat, the center of the installation site less than folder axle of rotating shaft by rotating shaft
Axle, is further opened with the groove towards folder axle opening on body, groove is the deep-slotted chip breaker centered on rotating shaft, the radial ruler of deep-slotted chip breaker
Very little to be axially adapted to folder, when clip is rotated, the deep-slotted chip breaker can wrap the folder axle for stretching out fixed seat, and shell fragment is arranged on
Fixed seat edge and stretched out towards positive plate through hole direction, planar metal film enters in fixed seat after having through hole to pass along shell fragment
Folder axle is by folder axis clamping.Folder axle fixing structure can ensure that the reliability loaded under the conditions of without very strong external force is fixed, shell fragment knot
Structure is used to ensure that thin film planar to keep straight, non-warping deformation when negative and positive die opening changes, while ensureing planar metal film
Contacted with hole side when by positive plate through hole.Compared with traditional sash weight fixed form, this structure can ensure film
In the case that plane is straight, arbitrarily change its direction, meet laboratory diagnosis demand.
The material of the fixed seat of further clamping device of the present invention is non-metal insulating material, its advantage be flow through it is flat
The electric current of face metallic film can be divided equally on by positive plate and be flowed through by the reflux column of both sides, it is to avoid clamping device fixed seat
Shunting.
It is main to be diagnosed using means such as laser microprobe and framing cameras in experiment, it is the diagnostic result for having obtained, it is thin
Membrane plane direction after loading negative electrode and the fixation of accelerator minus plate, need to be still needed to load plane parallel to the direction of probe laser
Direction is finely adjusted (less than 1 °) and is required with meeting diagnosis.In design, load plane side is realized using rotatable pole jaws of turning out cloudy
To fine setting, fixed cover 583 is tightened after fine setting, you can locked rotary freedom.The present invention is in order to solve planar metal film side
To control problem, so designed during load negative electrode of the invention：
As shown in Fig. 2, Fig. 5, present invention load negative electrode includes cathode substructure 581, negative electrode jaws 854 and fixed cover 583, cloudy
Pole jaws includes two half-conicals being interlocked, and two half-conicals are arranged on cathode substructure, and the inner surface of fixed cover includes circle
The conical surface and the face of cylinder being connected with the big end of circular conical surface, fixed cover are inserted in from the small end of negative electrode jaws, fixed cover during being inserted in
Two half-conicals of circular conical surface portion compresses negative electrode jaws, the cylindrical surface portion of fixed cover is threadedly coupled with cathode substructure, backflow
The bellmouth relative with through hole on positive plate is provided with post base, negative electrode jaws stretches into clamping plane metal foil in bellmouth hole
Film, negative electrode jaws coordinates with bellmouth circular conical surface.
Further, in order to solve negative electrode clamp structure ablation problem.To ensure there is good electrical contact with film, while
Control thin film planar is straight, and the negative electrode jaws for clamping paillon foil should have certain flatness.After one wheel experiment, negative electrode jaws quilt
Ablation, no longer meets and requires, negative electrode jaws is loaded for this and is designed as separable structure with cathode substructure, is only needed more after experiment every time
Negative electrode jaws is changed, it is both cost-effective, the flatness of negative electrode jaws can be ensured again.
In addition, packing ring 583 is additionally provided between cathode substructure of the invention and negative electrode jaws, by adjusting washer (disk) thickness pair
The horizontal level for loading negative electrode is finely adjusted.
Principle of the invention is：
Planar metal film one end is clamped by negative electrode jaws, and the other end passes through the hole slot reserved on positive plate, by two
Semicolumn folder axle clamp is lived, and two semicolumn folder axles synthesize a cylinder, are positioned in the groove reserved in fixed seat, rotate the circle
Post will be loaded and tensed, while shell fragment is bent, tighten the folder axle clip of both sides can folder axle fix, even if load negative electrode with
Loading anode has the slight relative movement can also to keep the straight of film in the horizontal direction.Reflux column has two panels, is not
Rust steel cuboid, is directly connected with reflux column base, and reflux column base is fixed by snap on accelerator positive plate.Accelerate
When device discharges, in load in electric current and reflux column the sense of current conversely, according to Faraday's electromagnetic induction law, load will be subject to time
" repulsion " of electric current in fluidization tower, repulsion size and load plane and the distance dependent of reflux column inner surface, can be by regulation two
Individual reflux column loads stress with the distance controlling of load, and plane of vision metallic film is supported under different stress conditions, unstable
The development of property.
Claims (4)
1. planar metal film load device, including load, load negative electrode and loading anode, it is characterised in that：The load is
Planar metal film, the planar metal film is in straight condition, and one end electrically connects with negative electrode is loaded, the other end and loading anode
Electrical connection；
The load device also includes the reflux being located between load negative electrode and loading anode, and the reflux includes back
Fluidization tower base and two reflux columns, described two reflux columns are symmetricly set on both sides of planar metal film and thin with planar metal
The distance between film is adjustable, and one end and the loading anode of the reflux column make electrical contact with, the other end and reflux column of the reflux column
Base is electrically connected, and the reflux column base is electrically connected with load negative electrode；
The loading anode includes positive plate and clamping device, and the positive plate is electrically connected with reflux column, the clamping device
Be fixed on positive plate, the center of the positive plate offers through hole, one end of the planar metal film by through hole with
Clamping device is fixedly connected；
The clamping device includes fixed seat, two semicolumns, two folders axle clip and shell fragments, and the material of the fixed seat is
Non-metal insulating material, described two semicolumns are interlocked to form folder axle, and the folder axle is installed in fixed seat and two ends stretch out solid
Reservation；
The folder axle clip includes body and is arranged on rotating shaft vertical with body on body, and two folder axle clips are by turning
Axle is installed on the both sides of fixed seat, and the central shaft of the installation site less than folder axle of the rotating shaft is further opened with court on the body
To the groove of folder axle opening, the groove is the deep-slotted chip breaker centered on rotating shaft, and the radial dimension of the deep-slotted chip breaker is with folder axially
Adaptation, when clip is rotated, the deep-slotted chip breaker can wrap the folder axle for stretching out fixed seat；
The shell fragment is arranged on fixed seat edge and is stretched out towards positive plate through hole direction, and the planar metal film is passed by through hole
Afterwards along shell fragment enter fixed seat in folder axle by folder axis clamping；
The load negative electrode includes cathode substructure, negative electrode jaws and fixed cover,
The negative electrode jaws includes two half-conicals being interlocked, and described two half-conicals are arranged on cathode substructure, described solid
The inner surface of fixed set includes circular conical surface and the face of cylinder being connected with the big end of circular conical surface, small end set of the fixed cover from negative electrode jaws
Enter, two half-conicals of the circular conical surface portion compresses negative electrode jaws of fixed cover during being inserted in, the cylindrical surface portion of fixed cover with
Cathode substructure is threadedly coupled,
The bellmouth being adapted with lead to the hole site on positive plate and size, the negative electrode jaws are provided with the reflux column base
One end of clamping plane metallic film in bellmouth is stretched into, the negative electrode jaws coordinates with bellmouth circular conical surface.
2. planar metal film load device according to claim 1, it is characterised in that：The cathode substructure is pressed from both sides with negative electrode
Mouth is two discrete devices.
3. planar metal film load device according to claim 2, it is characterised in that：The cathode substructure is pressed from both sides with negative electrode
Packing ring is additionally provided between mouthful.
4. planar metal film load device according to claim 3, it is characterised in that：The planar metal film is aluminium
Film or tungsten film, its width range are 0.5-1.5cm, and length is 8-10cm, and thickness is less than 50 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457940.3A CN104202903B (en) | 2014-09-10 | 2014-09-10 | Flat metal film loading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457940.3A CN104202903B (en) | 2014-09-10 | 2014-09-10 | Flat metal film loading device |
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| CN104202903A CN104202903A (en) | 2014-12-10 |
| CN104202903B true CN104202903B (en) | 2017-05-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161142B (en) * | 2015-09-25 | 2017-05-10 | 中国工程物理研究院核物理与化学研究所 | Fine tuning device for torispherical wire array load preparation |
| CN105979690B (en) * | 2016-06-20 | 2018-02-09 | 西北核技术研究所 | Z pinch load structures with positive polarity radial electric field |
| CN110379524B (en) * | 2019-08-15 | 2024-02-09 | 中国工程物理研究院流体物理研究所 | Z pinch driven fusion ignition target and fusion energy target load and conveying system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2648959B1 (en) * | 1989-06-23 | 1995-03-24 | Duclos Environnement | EARTHING POLE |
| JPH09170549A (en) * | 1995-12-19 | 1997-06-30 | Ishikawajima Harima Heavy Ind Co Ltd | Dc arc thruster |
| CN1158908C (en) * | 2001-09-13 | 2004-07-21 | 中国工程物理研究院激光聚变研究中心 | Adaptive 2-hoop fibre array load and its preparing process |
| US6908023B2 (en) * | 2002-03-06 | 2005-06-21 | Torque-Traction Technologies, Inc. | Apparatus for securing a yoke to a tube using magnetic pulse welding techniques |
| EP1886194A2 (en) * | 2005-05-14 | 2008-02-13 | Gideon Levingston | Balance spring, regulated balance wheel assembly and methods of manufacture thereof |
| CN101868112B (en) * | 2010-04-30 | 2012-10-24 | 西北核技术研究所 | Parallel wire-array Z-pinch load |
| CN102103965B (en) * | 2011-01-17 | 2012-08-22 | 西北核技术研究所 | X-ray pinch diode provided with centering structure |
| CN102737854A (en) * | 2011-04-07 | 2012-10-17 | 周旺龙 | Fixing groove for fixing core cladding in aluminum case of capacitor |
| CN202998636U (en) * | 2012-12-25 | 2013-06-12 | 中国工程物理研究院激光聚变研究中心 | Pinch wire array load correcting device |
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