CN101793485B - Armature-free explosive magnetic compression generator - Google Patents
Armature-free explosive magnetic compression generator Download PDFInfo
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- CN101793485B CN101793485B CN 201010001178 CN201010001178A CN101793485B CN 101793485 B CN101793485 B CN 101793485B CN 201010001178 CN201010001178 CN 201010001178 CN 201010001178 A CN201010001178 A CN 201010001178A CN 101793485 B CN101793485 B CN 101793485B
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Abstract
The invention provides a detonation product conductive solenoid explosive magnetic compression generator, which belongs to the fields of high-power pulse power supplies and magnetic compression. The explosive magnetic compression generator comprises a stator coil, a metal conductive bar and a load; a detonation substance is filled inside the explosive magnetic compression generator; the metal conductive bar is fixedly embedded in the middle of the detonation substance; the explosive magnetic compression generator detonates the detonation substance, the detonation product has conductivity, and the stator coil, the load, the metal conductive bar and the detonation product form a new current loop so as to capture magnetic flux; and because of the magnetic field freezing effect, the electrical inductance is reduced and the current of the new loop is increased along with the detonation so as to form high-current pulse at the load end.
Description
Technical field
The invention belongs to high power pulsed source and magnetic compression field, be specifically related to a kind of detonation product conducting type solenoid type explosive magnetic compression generator.
Background technology
Explosive magnetic compression generator (MFCG) is a kind of current impulse device according to the design of magnetic field freezing effect.It utilizes the chemical energy of explosive to drive the loop distortion, compression magnetic field work done, and loop inductance reduces, electric current increases and make, and finally makes chemical energy change electromagnetic energy into.Thereby the power supply etc. that explosive magnetic compression generator can be used as the power supply of electromagnetic launcher, plasma focusing, high power electromagnetic radiation, laser instrument, generation high-intensity magnetic field and produces the high current charged particle beam as the excitation diode.And because its single uses, mainly be in the high energy ELECTROMAGNETIC WEAPON, to be used as high-power pulse source.Generator can have the various types such as dish-type, template, stripe shape, helical type, wherein helical type explosive magnetic compression generator is simple in structure, and has very large initial inductance, thereby can capture more initial magnetic flux and can obtain electric current and the energy multiplication factor larger than other MFCG, thereby have a wide range of applications.
Because explosive magnetic compression generator is a kind of high power pulsed source, can within the time of microsecond magnitude, export hundreds of kilo-amperes to the large pulse current of tens of megamperes.So far all furtherd investigate by countries in the world since the forties in 20th century.Being most widely used of solenoid type explosive magnetic compression generator wherein, it is mainly disconnected by armature, explosive loading, stator coil, sled closes and the high polymer insulating barrier forms.Its basic principle is: utilize first the capacitor group to the loop discharge of generator and load formation, inject seed current, generate an electromagnetic field in generator.Ignite powder charge, drive armature and expand, when armature touch be installed in the generator front end must prize disconnect close after short circuit power down container group, generator and load consist of independent loop.The armature of tapered expansion is pushed ahead, and by the outer field stator coil of circle short circuit, compresses simultaneously magnetic field, and the part chemical energy of explosive is transformed into electromagnetic energy, finally amplifies the pulse current of decades of times or hundreds of times in load output.
The shortcoming of traditional single stage solenoid type generator is that the output of unit volume self-energy is low.Because the diameter of armature and stator coil is than the restriction that is subject to armature limit of expansion radius, thereby the potentiality that improve initial inductance are limited, and jumping circle and armature and stator coil short dot loose contact reason etc. cause flux loss easily, have therefore also affected electric current and the energy multiplication factor of generator.
Summary of the invention
The object of the invention is to solve a difficult problem that exists in the above-mentioned prior art, a kind of detonation product conducting type solenoid type explosive magnetic compression generator is provided, eliminate the restriction of traditional generator armature limit of expansion radius, improve initial inductance, obtain larger electric current and energy multiplication factor.
The present invention is achieved by the following technical solutions:
Armature-free explosive magnetic compression generator, described explosive magnetic compression generator are solenoid type, and adopt the detonation product electrically conducting manner, and it comprises external power supply; Described explosive magnetic compression generator also comprises stator coil, metal conductive bar and load;
Described explosive magnetic compression generator inside is provided with the detonation storehouse, is filled with detonation substance in described detonation storehouse; Described metal conductive bar fixedly is embedded in the middle of the described detonation substance;
Described explosive magnetic compression generator because detonation product has electric conductivity, forms new current loop at described stator coil-load-metal conductive bar-detonation product, thereby captures magnetic flux by igniting detonation substance; Because the magnetic field freezing effect, along with the carrying out of detonation, inductance reduces, and new loop current increases, and forms high-current pulse at load end.
The present invention is in order to overcome problems of the prior art, and described detonation substance adopts aluminum composition.Concrete described detonation substance is for containing the aluminium trinitrotoluene or containing aluminium B explosive.Be TNT/Al or TNT/RDX/Al.
The present invention improves on the basis of prior art structure, describedly is arranged with described stator coil outside the detonation storehouse; Described stator coil one end is connected with metal conductive bar by described load; The described stator coil other end be connected external power supply and connect;
One end is outside equipped with primacord in described detonation storehouse; Length setting and the initial circuit of primacord of the present invention are adaptive time delay, and it is constantly consistent that ignition time and described stator coil short circuit initial time and capacitor discharge reach maximum current.If capacitor begins to discharge into electric current and reaches the maximum required time and be spaced apart t
c, also being from capacitor and beginning to discharge into the primacord ignition charge until short circuit stator coil required time interval, other establishes, and primacord begins ignition charge until short circuit stator coil required time is spaced apart t
e, then to begin to discharge into the time interval that primacord begins ignition charge be t to capacitor
s=t
c-t
e, the length of used primacord is L=Dt therebetween
s=D (t
c-t
e).
Described metal conductive bar material is copper rod;
At described external power supply, stator coil forms the loop between load and metal conductive bar.
The present invention is socketed with sleeve, and is filled with thermosetting resin between sleeve and stator coil for structure being played effect fixing and insulation outside described stator coil.
Described sleeve material is polymethyl methacrylate (PMMA), and described thermosetting resin is epoxy resin.
The present invention also arranges outside described sleeve and is socketed with shell; Be provided with the aluminium end plug at two ends, described detonation storehouse.Detonation substance has high conductivity described in the present invention, and its conductance surpasses 10
6Ω
-1M
-1
Described external power supply adopts capacitor, and its capacitance is 10～50 μ F; The coiling of described stator coil merogenesis, total inductance are 0.2～1.0mH.The object of the invention is by aluminum composition, and the high conductivity detonation product replaces the method in armature compression magnetic field, has eliminated the restriction of traditional generator armature limit of expansion radius, is conducive to improve initial inductance, obtains larger electric current and energy multiplication factor.
Employing aluminum composition and center copper rod replace armature and its inboard explosive of traditional generator among the present invention, form the loop of stator coil, detonation products, copper rod, wire and load in the generator running.Utilize detonation products to have the characteristics compression magnetic field of high conductivity.
The cylindrical casting of packing in traditional generator stator coil inboard fills aluminum composition, and at the central axis of explosive the conduction copper rod is installed.Stator coil adopts epoxy resin to fix and insulate installation controlled fragment outside epoxy resin.After aluminum composition detonates, when it runs into the stator coil of imbedding in the high polymer, destroy the insulated hull of high polymer layer and stator coil.Because the aluminum composition detonation product has high conductivity, therefore can as the armature of traditional generator, by circle short circuit stator coil, and then make " load-wire-copper rod-aluminum composition detonation product-stator coil " this loop conducting, magnetic field is compressed by detonation products, and electric current is exaggerated.
Compared with prior art, the invention has the beneficial effects as follows: (1) utilizes the aluminum composition detonation product to replace armature compression magnetic field, has eliminated the break impact of radius of the armature limit, is conducive to the increase of stator coil radius, and the initial inductance of generator is improved; (2) under equal volume, load output current magnifying power has improved more than 15%; (3) jump circle and armature and the loose contact of stator coil short dot etc. and cause that easily the problem of flux loss has obtained effectively avoiding.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail:
Fig. 1 is detonation product conducting type solenoid type explosive magnetic compression generator structural representation of the present invention.
Fig. 2 is detonation product conducting type solenoid type explosive magnetic compression generator running schematic diagram of the present invention.
Fig. 3 is detonation product conducting type solenoid type explosive magnetic compression generator Contrast on effect of the present invention: load output current comparison diagram.
Among Fig. 1: 1. external power supply; 2. aluminum composition; 3. stator coil; 4. epoxy resin; 5. lucite sleeve; 6. shell; 7. load; 8. copper rod; 9. aluminium end plug; 10. primacord;
Fig. 2: 11. aluminum composition detonation wave fronts; 12. aluminum composition detonation product.
The specific embodiment
As shown in Figure 1, a kind of detonation product conducting type solenoid type explosive magnetic compression generator comprises stator coil 3, in described stator coil 3 inboards aluminum composition 2 is housed; Central axis at described aluminum composition is equipped with conduction copper rod 8.
Described aluminum composition 2 is cylindrical, and casting is contained in the inboard of described stator coil 3.
Described stator coil 3 adopts epoxy resin 4 fixing and insulation.
Described generator also comprises and connects external power source 1, shell 6 in described epoxy resin 4 outsides and cover lucite sleeve 5 is arranged; Primacord hole 10 is used for connecting primacord; Sleeve 5 both sides end faces are installed aluminium end plug 9, are used for reducing the impact of detonation process rarefaction wave, and prevent that detonation process peripheral oxygen from entering generator, reduce its electrical conductivity with aluminum composition 2 reactions, affect the magnetic field compression effectiveness.
Figure 2 shows that running of the present invention, be specially the loop discharge that is at first consisted of to stator coil 3, load 7, conduction copper rod 8 by external power source 1, electric current produces magnetic field at stator coil 3, load 7, conduction copper rod in the 8 formed spaces, sets up initial magnetic flux.Then utilize primacord 10 aluminum composition 2 that detonates, as shown in Figure 2, explosive detonation wave surface 11 forward (to the right) advances, high conductivity detonation product 12 conducting stator coils 3 and conduction copper rod 8, external power source is fallen in short circuit, length by primacord 10 can the control lag time, and it is constantly consistent that the initial time that makes the short circuit stator coil and external capacitor discharge reach maximum current.The loop Trapped field that stator coil 3, load 7, conduction copper rod 8 and detonation products 12 etc. form, and the initial current in the loop is the capacitor discharge maximum current.Along with the detonation of aluminum composition 2 is pushed ahead, the inductance of stator coil 3 constantly reduces, because the magnetic flux conservation principle, magnetic flux is constant, and the inductance in loop reduces, and then the electric current in the loop increases, thereby realizes the amplification of electric current.After the generator operation was finished, load can obtain amplifying decades of times to the electric current of hundred times.
The present invention is according to the program of numerical calculation of writing, this armature-free explosive magnetic compression generator has been carried out numerical computations, wherein explosive adopts TNT80/Al20, its explosion velocity is 6761m/s, copper rod diameter 10mm, segmentation varying pitch single-stage helical type explosive magnetic compression generator traditional in other relevant parameter and the prior art is basic identical, and structure is similar, and cumulative volume is also identical.Calculate the time dependent curve of its load output current shown in curve among Fig. 32.And the load output current result of the helical type explosive magnetic compression generator that curve 1 draws for the calculation of parameter of utilizing prior art.As can be seen from Figure 3, the maximum output current of traditional single stage helical type explosive magnetic compression generator is about 246kA, and the maximum output current of detonation product conducting type solenoid type explosive magnetic compression generator is about 285kA, improves about 16%.Wherein, documents [1] Chen Dongqun, Cao Shengguang, Liu Yonggui, etc. column type solenoid explosive magnetic compression generator experimental study [J]. electrician's electric energy new technology, 2002,21 (3): 49-52.
Technique scheme is one embodiment of the present invention, for those skilled in the art, on the basis that the invention discloses application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned specific embodiment of the present invention, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (12)
1. armature-free explosive magnetic compression generator, described explosive magnetic compression generator is solenoid type, and adopts the detonation product electrically conducting manner, it comprises external power supply; It is characterized in that described explosive magnetic compression generator also comprises stator coil, metal conductive bar and load;
Described explosive magnetic compression generator inside is provided with the detonation storehouse, is filled with detonation substance in described detonation storehouse; Described metal conductive bar fixedly is embedded in the middle of the described detonation substance;
Described explosive magnetic compression generator because detonation product has electric conductivity, form new current loop between described stator coil-load-metal conductive bar-detonation product, and magnetic flux is captured in the generation loop by igniting detonation substance; Because the magnetic field freezing effect, along with the carrying out of detonation, inductance reduces, and new loop current increases, and forms high-current pulse at load end.
2. armature-free explosive magnetic compression generator according to claim 1 is characterized in that,
Described detonation substance is aluminum composition.
3. armature-free explosive magnetic compression generator according to claim 1 and 2 is characterized in that,
Described detonation substance is for containing the aluminium trinitrotoluene or containing aluminium B explosive.
4. armature-free explosive magnetic compression generator according to claim 1 and 2 is characterized in that,
Outside described detonation storehouse, be arranged with described stator coil; Described stator coil one end is connected with metal conductive bar by described load; The described stator coil other end be connected external power supply and connect;
One end is outside equipped with primacord in described detonation storehouse; Described metal conductive bar material is copper rod;
At described external power supply, stator coil forms the loop between load and metal conductive bar.
5. armature-free explosive magnetic compression generator according to claim 1 is characterized in that,
Outside described stator coil, be socketed with sleeve, and between sleeve and stator coil, be filled with thermosetting resin.
6. armature-free explosive magnetic compression generator according to claim 4 is characterized in that,
Outside described stator coil, be socketed with sleeve, and between sleeve and stator coil, be filled with thermosetting resin.
7. according to claim 5 or 6 described armature-free explosive magnetic compression generators, it is characterized in that,
Described sleeve material is polymethyl methacrylate (PMMA), and described thermosetting resin is epoxy resin.
8. according to claim 5 or 6 described armature-free explosive magnetic compression generators, it is characterized in that,
Outside described sleeve, also arrange and be socketed with shell; Be provided with the aluminium end plug at two ends, described detonation storehouse.
9. armature-free explosive magnetic compression generator according to claim 4 is characterized in that,
The time delay in the loop that forms between the length setting of described primacord and the external power supply-stator coil-load-metal conductive bar is adaptive, and it is constantly consistent that ignition time and described stator coil short circuit initial time and the discharge of described external power supply reach maximum current.
10. armature-free explosive magnetic compression generator according to claim 1 and 2 is characterized in that,
Described detonation product has high conductivity, and its conductance surpasses 10
6Ω
-1M
-1
11. armature-free explosive magnetic compression generator according to claim 3 is characterized in that,
Described detonation product has high conductivity, and its conductance surpasses 10
6Ω
-1M
-1
12. armature-free explosive magnetic compression generator according to claim 1 is characterized in that,
Described external power supply adopts capacitor, and its capacitance is 10～50 μ F; The coiling of described stator coil merogenesis, total inductance are 0.2～1.0mH.
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| CN 201010001178 CN101793485B (en) | 2010-01-15 | 2010-01-15 | Armature-free explosive magnetic compression generator |
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|---|---|---|---|
| CN 201010001178 CN101793485B (en) | 2010-01-15 | 2010-01-15 | Armature-free explosive magnetic compression generator |
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| CN101793485B true CN101793485B (en) | 2013-04-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103715944A (en) * | 2013-11-27 | 2014-04-09 | 北京机械设备研究所 | Magnetic flux compression generator employing vacuum insulation |
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| CN102003922B (en) * | 2010-10-19 | 2013-03-27 | 哈尔滨工业大学 | Capacity loaded magnetic flux compression generator with stator coil operating sectionally |
| CN102879285B (en) * | 2012-10-22 | 2014-06-11 | 中国工程物理研究院流体物理研究所 | Device for realizing strong magnetic pressure oblique wave loading in solid materials |
| RU2548021C2 (en) * | 2013-07-26 | 2015-04-10 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Explosion-magnetic system generating powerful energy impulse |
| CN106816255B (en) * | 2017-03-29 | 2018-06-29 | 中国工程物理研究院流体物理研究所 | A kind of integrated driving coil and packaging technology for electromagnetic drive compressed magnetic flux |
| RU2700694C1 (en) * | 2018-11-12 | 2019-09-19 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Method and unit for disconnection of disc-type explosive magnetic generator from spiral explosive magnetic generator |
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