CN102003922B - Capacity loaded magnetic flux compression generator with stator coil operating sectionally - Google Patents
Capacity loaded magnetic flux compression generator with stator coil operating sectionally Download PDFInfo
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- CN102003922B CN102003922B CN 201010511869 CN201010511869A CN102003922B CN 102003922 B CN102003922 B CN 102003922B CN 201010511869 CN201010511869 CN 201010511869 CN 201010511869 A CN201010511869 A CN 201010511869A CN 102003922 B CN102003922 B CN 102003922B
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Abstract
The invention discloses a capacity loaded magnetic flux compression generator with a stator coil operating sectionally, belonging to the fields of high-power pulse power sources and magnetic compression. By utilizing the capacity loaded magnetic flux compression generator of the invention, the problem of lower frequency range of signal spectral range generated by the existing capacity loaded helical magnetic flux compression generator is solved. The capacity loaded magnetic flux compression generator of the invention comprises the stator coil, an armature and a capacitive load, wherein the armature is a cylinder; the stator coil is divided into n numbered coils, and the n numbered coils of the stator coil are helical; the armature is arranged in an inner cavity formed by the n numbered coils, all the coils have the same coaxial line with the armature; from the initial end of the armature, in terms of every two adjacent coils, the tail end of the front coil and the head end of the rear coil are positioned on the same cross section of the armature; the tail ends of all the coils are connected with one end of the capacitive load; and the tail end of the armature is connected with the other end of the capacitive load. The invention is suitable for magnetic flux compression generators.
Description
Technical field
The present invention relates to a kind of capacitive load explosive magnetic compression generator of stator coil fragmentary works, belong to high power pulsed source and magnetic compression field.
Background technology
Explosive magnetic compression generator is a kind of impulse type that late 1950s begins to grow up, the energy supply system of inductor, has that volume is little, energy storage density is high, a series of advantages such as deformable design and low cost of manufacture.As pulse power supply, explosive magnetic compression generator is an energy amplifying device, and itself also needs Power supply.One, it has two cover energy resource systems.Wherein Initial energy source provides initial magnetic flux, as seed source, is formed with magnetic flux distribution to be compressed; High explosive then provides power consumption for it, and the chemical energy that explosive charge discharges drives the metal sleeve turgor movement, overcomes the magnetic field force work done, initial magnetic flux is compressed forms to amplify, thereby produce very strong magnetic field.As single, can the open-air pulse power supply that uses, explosive magnetic compression generator one of the most significant advantage be exactly compact, be convenient for carrying.
The solenoid type explosive magnetic compression generator because simple in structure, have very large initial inductance, can capture more initial magnetic flux and be widely used.The solenoid type explosive magnetic compression generator mainly disconnects the pass by armature, explosive, stator coil, sled and the high polymer insulating barrier forms, its basic functional principle is: utilize first the capacitor group to the loop discharge of generator and load formation, inject seed current, in generator, generate an electromagnetic field, then ignite powder charge, drive armature and expand, when armature touch the sled that is installed in the generator front end 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 capacitive load explosive magnetic compression generator is to consist of at the basis of solenoid type explosive magnetic compression generator additional one little electric capacity.Because the adding of capacitor makes the electric pulse of generation have oscillating characteristic, thereby can cover wider frequency range.If the electromagnetic pulse that the capacitive load explosive magnetic compression generator is produced radiate by broad-band antenna, then its on Military Application with significant.The advantage of its compact conformation can be so that electromagnetic pulse weapon be fit to widely carrying platform.
The carrier frequency of the solenoid type explosive magnetic compression generator take electric capacity as load is by the dynamic inductance L (t) of stator coil and load capacitance C is common determines, in order to guarantee certain energy and power, and satisfy the requirement of other parameter, not optional too little of the value of the initial inductance L of stator coil (0) and capacitor C, therefore although can adopt two ends detonates or the mode compressed pulse widths of Explosive initiated axially, improve the high fdrequency component in the signal spectrum, but the signal spectrum scope is still very limited, and for example the signal energy of Explosive initiated axially mode mainly concentrates in the frequency band of 5-30MHz.For the solenoid type explosive magnetic compression generator that is more conducive to take electric capacity as load carries out energy emission, need the signal spectrum scope of its generation to reach a higher frequency range.
Summary of the invention
The objective of the invention is the lower problem of frequency range for the signal spectrum scope that solves existing capacitive load solenoid type explosive magnetic compression generator generation, a kind of capacitive load explosive magnetic compression generator of stator coil fragmentary works is provided.
The capacitive load explosive magnetic compression generator of stator coil fragmentary works of the present invention, it comprises stator coil, armature and capacitive load,
Described armature is cylinder, stator coil is divided into n section coil, the n section coil of stator coil all is spiral form, armature is arranged in the formed internal cavities of described n section coil, and every section coil all with the armature coaxial line, from the top of armature every adjacent the last period coil end and the head end of rear one section coil be positioned on the same cross section of armature, the terminal of every section coil all links to each other with an end of described capacitive load, the end of armature links to each other with the other end of described capacitive load.
Advantage of the present invention is: the present invention is by carrying out segment design to stator coil, the inductance of the RLC oscillation circuit that is comprised of respectively each section stator coil, armature and capacitive load is reduced, it is under the prerequisite of the energy, power and other parameter request that guarantee generator, make the carrier frequency of described generator obtain increasing, and then the frequency range of signal spectrum scope is improved, the synchronous signal frequency also is improved, and the energy that described generator is produced is easier to radiation.This design does not affect other index of generator.
The present invention can not increase the physical dimension of generator, for large-sized radio frequency explosive magnetic compression generator, aspect raising signal frequency and signal bandwidth, obviously is better than two ends detonation mode and Explosive initiated axially mode.
Performance indications of the present invention: if the inductance of generator is divided into the n section, carrier frequency is improved
Doubly.
Description of drawings
Fig. 1 is structural representation of the present invention;
(0-t when Fig. 2 is the work of first paragraph stator coil
1) constantly RLC equivalent circuit;
(t when Fig. 3 is the work of second segment stator coil
1-t
2) constantly RLC equivalent circuit;
(t when Fig. 4 is the work of n section stator coil
N-1-t
n) constantly RLC equivalent circuit.
The specific embodiment
The specific embodiment one: below in conjunction with Fig. 1 to Fig. 4 present embodiment is described, the capacitive load explosive magnetic compression generator of the described stator coil fragmentary works of present embodiment, it comprises stator coil 1, armature 2 and capacitive load 3,
Described armature 2 is cylinder, stator coil 1 is divided into n section coil, the n section coil of stator coil 1 all is spiral form, armature 2 is arranged in the formed internal cavities of described n section coil, and every section coil all with armature 2 coaxial lines, from the top of armature 2 every adjacent the last period coil end and the head end of rear one section coil be positioned on the same cross section of armature 2, the terminal of every section coil all links to each other with an end of described capacitive load 3, and the end of armature 2 links to each other with the other end of described capacitive load 3.
The top of described armature 2 is initiation ends.
Operation principle:
Behind explosive initiation, the top of armature 2 begins to expand, and the head end that plays first paragraph stator coil 1 when the top by armature 2 is with after the armature 2 of expansion contacts, and first paragraph stator coil 1, armature 2 and capacitive load 3 have formed a RLC loop, as shown in Figure 2, and L among the figure
1(t) be first paragraph stator coil 1 corresponding inductance, R
1(t) be the resistance in this RLC loop, C is capacitive load 3.L
1(t) along with the operation of device is more and more less, so the frequency of oscillation in this loop is more and more higher.If initial current I
1(0)=I
0, according to the magnetic flux law of conservation, if the loss in the loop is less, I then
1(t) increasing;
When 1 operation of first paragraph stator coil is complete, when namely armature 2 contacts with the end of first paragraph stator coil 1, establish this constantly t=t
1, I
1(t)=I
1(t
1), because the top of second segment stator coil 1 and the end of first paragraph stator coil 1 are positioned on the same cross section, shown in dotted line among Fig. 1, so the armature 2 that expand this moment contacts with the top of second segment stator coil 1, formed again a RLC loop by second segment stator coil 1, armature 2 and capacitive load 3, as shown in Figure 3, L
2(t) be second segment stator coil 1 corresponding inductance, R
2(t) be the resistance in this RLC loop, C is capacitive load 3.This moment I
2(t
1)=I
1(t
1), L
2(t) along with the operation of device is more and more less, so the frequency of oscillation in this loop is more and more higher.According to the magnetic flux law of conservation, if the loss in the loop is less, I then
2(t) increasing;
The rest may be inferred, and when the top of n section stator coil 1 contacted with armature 2, formed RLC loop as shown in Figure 4.If the loss of device in the whole service process is all less, then initial current I
0Constantly be exaggerated, namely the chemical energy of explosive converted to electromagnetic energy.Because the inductance of whole generator is fragmentary works, so the initial inductance in each section work loop is the 1/n of generator total inductance only, thereby carrier frequency has been improved
Doubly.
As long as the end of present embodiment adjacent in theory the last period of stator coil 1 and the head end of rear one section stator coil 1 are positioned on the armature 2 same cross sections, consider the build-up tolerance of described explosive magnetic compression generator, and the inhomogeneities of explosive, described the last period, the head end of stator coil 1 end and rear one section stator coil 1 should be as far as possible close.
The specific embodiment two: below in conjunction with Fig. 1 present embodiment is described, present embodiment is for to the further specifying of embodiment one, and described every section stator coil 1 is constant pitch, and the pitch of adjacent segment stator coil 1 is geometric progression and increases progressively from the top of armature 2.Other composition and annexation are identical with embodiment one.
Because the loss that the Joule heat of resistance causes is very serious, especially more obvious in the latter stage of capacitive load explosive magnetic compression generator operation, because electric current at this moment and current density are all very large.And adopt stator coil 1 winding method of varying pitch partly to address this problem.It can maintain on the constant acceptable maximum current density by increase the cross-sectional area of correspondent section stator coil 1 at the end of described generator, avoids increasing a large amount of Joule heats that cause owing to current density is unrestricted and loses.
The pitch that realizes adjacent segment stator coil 1 is that geometric progression increases progressively can be in the following ways, for example first paragraph stator coil 1 uses 1 wire coiling, second segment stator coil 1 uses the parallel coiling of 2 wires, use successively the more parallel adjacent back segment stator coil 1 of coiling of the wires such as 4,8, can reduce to a certain extent the current density that flows through every wire like this.And varying pitch stator coil 1 also has the advantage that reduces terminal approach effect.
Claims (2)
1. the capacitive load explosive magnetic compression generator of a stator coil fragmentary works, it comprises stator coil (1), armature (2) and capacitive load (3), it is characterized in that:
Described armature (2) is cylinder, stator coil (1) is divided into n section coil, the n section coil of stator coil (1) all is spiral form, armature (2) is arranged in the formed internal cavities of described n section coil, and every section coil all with armature (2) coaxial line, from the top of armature (2) every adjacent the last period coil end and the head end of rear one section coil be positioned on the same cross section of armature (2), the terminal of every section coil all links to each other with an end of described capacitive load (3), and the end of armature (2) links to each other with the other end of described capacitive load (3);
The top of described armature (2) is initiation ends.
2. the capacitive load explosive magnetic compression generator of stator coil fragmentary works according to claim 1, it is characterized in that: described each section stator coil (1) is for constant pitch, and the pitch of adjacent segment stator coil (1) is geometric progression and increases progressively from the top of armature (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010511869 CN102003922B (en) | 2010-10-19 | 2010-10-19 | Capacity loaded magnetic flux compression generator with stator coil operating sectionally |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010511869 CN102003922B (en) | 2010-10-19 | 2010-10-19 | Capacity loaded magnetic flux compression generator with stator coil operating sectionally |
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| Publication Number | Publication Date |
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| CN102003922A CN102003922A (en) | 2011-04-06 |
| CN102003922B true CN102003922B (en) | 2013-03-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104157956B (en) * | 2014-08-18 | 2016-08-24 | 哈尔滨工业大学 | Radio frequency explosive magnetic compression generator miniaturization conformal antenna |
| CN110439559B (en) * | 2019-07-20 | 2021-01-15 | 江门市新会区泰盛石场有限公司 | Onboard splitting machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059839A (en) * | 1975-06-09 | 1991-10-22 | Unites States Of America As Represented By The Secretary Of The Navy | Explosive magnetic field compression generator transformer power supply for high resistive loads |
| CN101793485A (en) * | 2010-01-15 | 2010-08-04 | 北京理工大学 | Armature-free explosive magnetic compression generator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010035690A1 (en) * | 1997-12-01 | 2001-11-01 | Kato Keith G. | Magneto-cumulative generator performance by using variable bitter coil-type stator windings |
| US7690288B2 (en) * | 2005-06-09 | 2010-04-06 | Lockheed Martin Corporation | Explosive-driven electric pulse generator and method of making same |
| JP2007325457A (en) * | 2006-06-02 | 2007-12-13 | Asahi Kasei Chemicals Corp | Magnetic-concentration-type explosive generator |
-
2010
- 2010-10-19 CN CN 201010511869 patent/CN102003922B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059839A (en) * | 1975-06-09 | 1991-10-22 | Unites States Of America As Represented By The Secretary Of The Navy | Explosive magnetic field compression generator transformer power supply for high resistive loads |
| CN101793485A (en) * | 2010-01-15 | 2010-08-04 | 北京理工大学 | Armature-free explosive magnetic compression generator |
Non-Patent Citations (5)
| Title |
|---|
| JP特开2007-325457A 2007.12.13 |
| 张发强等.螺旋型爆炸磁通量压缩发生器输出电流仿真分析.《火工品》.2008,(第3期),第28—31页. |
| 苏建河等.螺线型爆磁压缩发生器工程计算.《火工品》.2005,(第1期),第9—12页. |
| 螺旋型爆炸磁通量压缩发生器输出电流仿真分析;张发强等;《火工品》;20080630(第3期);第28—31页 * |
| 螺线型爆磁压缩发生器工程计算;苏建河等;《火工品》;20050228(第1期);第9—12页 * |
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