Magneto-parametric generator

FIELD: electricity.

SUBSTANCE: present invention relates to the physics of magnetism and is meant for investigating the structure of ferromagnetic materials, particularly for providing evidence of "freezing" in the domain pattern of magnetic field lines of permanent magnets, made from ferromagnetic materials. The magneto-parametric generator consists of two magnetically connected thin-walled cylindrical and coaxially located permanent magnets from the analysed ferromagnetic substance, one of which (rotor) is rotated by an electric motor, and the other (stator) is U-shaped. On its magnetic core there is an inductor coil, forming, together with a variable capacitor connected to it, an oscillating circuit, tuned at frequency ω=ΩD/2md, where Ω is frequency of rotation of the cylindrical magnet - rotor with diametre D, m is an integer, the value of which is measured, d is the known cross sectional dimension of the domain in the used ferromagnetic substance. The thickness of the walls of the cylindrical magnets h near magnet gaps is chosen such that it is much less than the diametre D, for example by one or two orders, and in the limit - h=d.

EFFECT: possibility of investigating structure and properties of domains of ferromagnetic materials as a function of their magnetisation and effect of different types of external factors on them, particularly their temperature.

4 dwg

 

The invention relates to the field of physics of magnetism and is designed to study the structure of ferromagnetic materials, in particular for evidence "here RQ" in the domain structure of magnetic field lines of the permanent magnets is made of a ferromagnetic material.

Observations But in 1919 (see Rudyak V.M. the Barkhausen Effect. "Phys", 1970, t, s) showed that under a smooth change of the magnetic field, the magnetization of the ferromagnet changes abruptly due to the different nature of friction domains. The Barkhausen effect is one of the direct evidence of the domain structure of ferromagnetic materials, it allows you to determine the volume of a single domain. For most ferromagnets this amount is equal to 10-6...l0-9cm3(respectively the transverse size of the domain is 0.1...0.01 mm), which indicates that a single domain is composed of vast numbers of atoms or molecules with identically oriented magnetic moments, that is, the domain has many, many orders of magnitude times the mass of individual molecules or atoms of matter. This, in particular, specifies a property of the magnetic viscosity of ferromagnetic materials.

It is believed that the domains of the two permanent magnets of the same magnetic substance magnetically connected so that the magnetic lines of force, ex is included from one of the domains of the permanent magnet, enter the domain of another permanent magnet so that the distance between these two domains pointing their flat and parallel spaced poles is minimal. This fact is confirmed by the fact that when the offset in the plane of the pole of one of the permanent magnets relative to the other occurs lateral force tending to return the position of the magnets in the original equilibrium. This experimental fact is used, in particular, in electric AC motors, in which occurs a rotating magnetic field in the stator, which is fond of the electromagnetic system of the rotor.

The known device containing one stationary cylindrical permanent magnet (stator) and a series of magnetically associated cylindrical magnets substantially smaller diameter (rotor), related to their axes of rotation of the cage, which is rotationally driven, resulting in a cylindrical magnets, the rotor is given a rotary motion about their axes of rotation, and the axis of rotation of the separator [1-3]. In such devices is the twisting of magnetic field lines emanating from the ends of the cylindrical magnets of the rotors and centric corresponding to the last position the ends of the cylindrical magnet of the stator. The authors believe that Paul is was artificially introduced concepts of existence in the vacuum perfectly elastic medium of the so-called Kantorov, representing the quadrupoles of the massless electric and magnetic monopoles of different signs that as a result of such twisting of magnetic field lines occurs gravitational field vector is collinear to the axis of rotation of the separator, and the direction of this vector, depending on the direction of rotation of the separator (clockwise or counterclockwise) or weakens the earth's gravity, or enhances it in relation to the above structure.

The proposed device is the equivalent of the above devices, but contains only two identical magnetically connected and coaxially arranged cylindrical magnet, one of which is stationary (the stator)and the other is rotating (rotor). It is significant that, of course, there is no gravitational field (as, indeed, it does not occur in the above cited devices), because the concept of quantong is not scientifically based and proven. Therefore, the above-mentioned device can not be considered as a prototype of the proposed device, the purpose of which also is entirely different.

The aim of the invention is an experienced proof "here RQ" of magnetic field lines in the domain structure of permanent magnets, allowing you to explore the structure and properties of domains in ferromagnets function is of their magnetization and how they are affected by various external factors, in particular their temperature,

This goal is achieved in the inventive device magnetovariational generator, consisting of two magnetically connected thin-walled cylindrical and coaxially spaced permanent magnets of the investigated ferromagnetic substances, one of which is the rotor is rotationally driven by an electric motor, and the other stator is made in the form of a horseshoe structure, the magnetic circuit is the coil inductance, forming together with attached to it a variable capacitor resonant circuit tuned at the frequency ω=ΩD/2md, where Ω is the frequency of rotation of the cylindrical magnet of the rotor diameter D, and m is some integer, to be measured, d - known transverse size of the domain used in ferromagnetic substance, the wall thickness of the cylindrical magnets h near the magnetic gap is many times smaller than the diameter D, for example one or two orders of magnitude.

The goal is explained by the curvature of the "frozen" in the domains of magnetic field lines during the rotation of the magnet rotor relative to the magnet-stator, in which these lines of force in the gap between the cylindrical magnets are elongated, slightly increasing the magnetic resistance of the closed magnetic circuit, that is, reducing the magnetic induction of the latter, until the PR, unless there is a disruption of the magnetic field lines and their transfer in the initial state the minimum distance between the associated magnetic domains of opposite spaced cylindrical magnets (rotor and stator), corresponding to the length of the magnetic gap. As a result of this disruption of the magnetic induction in the magnetic circuit by klasiskajam increases to its maximum value, which leads to the excitation coil inductance, located on the magnetic circuit of the magnet stator EMF induction in accordance with the law of Faraday. The repetition rate of these klasiskajam magnetic induction detected by the tuning of the oscillatory circuit in resonance and is measured by the frequency counter after the corresponding gain arising in oscillating the oscillation circuit and is compared with the frequency of rotation of the cylindrical magnet of the rotor during operation of the synchronous motor, for example, three-phase excited by a generator with adjustable frequency and inverter single-phase voltage in three-phase. The device is similar to the effect of violin: bow due to friction pulls the string of a violin up until not equal to the friction of the bow on the string and the force of its tension, after which the string is plucked from the bow and restores its original position, so the movement of the bow relative to p is by giving her oscillatory motion and generates a sound corresponding frequency. Thus, the claimed device is a parametric oscillatory system in which paging oscillations in the oscillatory circuit tuned in resonance with the frequency of breakdowns magnetic field lines, is due to the periodic change of the parameter is the magnetic induction in the magnetic circuit of the magnet stator, as well as by changing the relative magnetic permeability of the magnetic circuit as a whole.

The invention is clear from the submitted drawings.

Figure 1 shows the diagram of the inventive device is actually magnetovariational generator blocks and support the experiment. Magnetoelectricity generator consists of the following elements:

1 - thin-walled cylindrical permanent magnet rotor of the investigated ferromagnetic substance, for example, NdFeB;

2 - the magnetic circuit of the rotor of the synchronous motor;

3 - dielectric cylinder connector;

4 - the magnetic circuit of the stator of the synchronous motor;

5 - three-phase stator winding of the motor;

6 is fixedly mounted in the magnet-stator 7 rod of non-magnetic material;

7 - thin (on the ends) of the cylindrical permanent magnet stator is made of the same ferromagnetic substance (as in the magnet-rotor) is u-shaped, coaxially mounted with the magnet rotor 1;

p> 8 - the magnetic circuit of the magnet stator, closing the magnetic circuit of the magnet rotor 1 and the magnet-stator 7;

9 - coil inductance L on the magnetic core 8;

10 - variable capacitor With an oscillatory contour;

11 - reference prism magnetovariational generator.

When working magnetovariational generator used:

12 - low noise amplifier AC input is enabled to the oscillatory LC circuit, tuned to the frequency ω;

13 - e frequency;

14 - master oscillator, tunable Ω;

15 - a Converter single-phase voltage in three-phase with increased capacity.

Figure 2 presents in a linear scan domain structure of permanent magnets of the stator 7 and the rotor 1 with magnetic siloviki lines when stationary magnet rotor (V=0). The length of the magnetic force lines of minimum and equal to the gap between the magnets 1 and 7.

Figure 3 presents a linear scan of the same domain structure during the rotation of the magnet rotor with an angular frequency Ω, which determines the linear speed of the cylindrical wall of the magnet-rotor V=ΩD/2, where D is the diameter of the cylindrical magnet of the rotor 1. Shows the curvature of magnetic field lines (in the form of inclined arrows) before falling to their original state, as in figure 2. Breakdown is indicated at m=5. The transverse size of the RA domain is Yong h.

Figure 4 shows a graph of the time variation of the magnetic induction B(t) in the magnetic circuit (in particular, in the magnetic core 8). As the stretching of magnetic field lines during the rotation of the magnet rotor 1 relative to the stationary magnet-stator 7 increases the magnetic resistance of the magnetic circuit, that is gradually decreased magnetic induction it to the final value Incf(induction disruption). After a breakdown "frozen" in the domains of the magnetic field lines and restore them to their original location (as in figure 2) magnetic induction of klasiskajam increases to the reference level Bmax. The repetition period of disruption "frozen" in the domains of the magnetic field lines are equal, as it is easy to understand the value of 2π/ω, where ω is the angular frequency of the oscillation in the oscillating circuit LC.

Consider the effect of the proposed technical solution.

Mechanical rotation of the magnet rotor 1 relative to the magnet-stator 7 is synchronous, for example, three-phase motor, the stator winding 5 which is powered by a generator 14 with adjustable frequency Ω through the transducer 15 single-phase voltage in three-phase, performing also the function of amplifier power. During the rotation of the magnet rotor 1 is periodic elongation of the magnetic lines of force, "frozen" in the domains in the initial status is Janie, as indicated in figure 2, and before the collapse, as indicated in figure 3. In the magnetic gap between the magnets 1 and 7 the value of b is the maximum elongation of the magnetic lines of force reaches the value L, which is comparable with L≈(b2+m2d2)1/2(in linear approximation). This is equivalent to an apparent increase in the gap between the magnets 1 and 7 in k times, with k≈(b2+m2d2)1/2/b=[1+(md/b)2]1/2and considering that md/b<<1, we get k≈1+(md/b)2/2. Due to the smallness of the differences between the values of k from unity received a very small change of the magnetic induction in the magnetic circuit 8 and thus also very small variation of the magnitude of the relative magnetic permeability of the magnetic circuit as a whole, with the disruption of the magnetic field lines. Therefore, the LC resonant circuit has to be tuned in resonance with the frequency of these failures to increase the amplitude of the EMF induced in the inductor 9. Resulting in the oscillatory circuit of the electrical oscillations are amplified in a low noise amplifier AC 12 with required its broadband and served on electronic frequency counter 13, which measures the angular frequency ω of the occurring vibrations. The generator can be considered as parametric, because, in addition to the EMF induced in the coil 9 according to the law of electromagnetic induction Faraday due to changes in mA the magnetic induction in the magnetic circuit, updated synchronously and the inductance coil 9 due to changes in relative magnetic permeability in the magnetic circuit associated magnets 1 and 7. Parametric pumping also contributes to the oscillations in the oscillatory circuit LC. The resonance of the oscillating circuit occurs at the frequency ω=ΩD/2md=1/(LC)1/2if configured capacitor 10.

The rotation frequency Ω of the magnet rotor 1 is also measured by an electronic frequency counter 13 when connecting master oscillator 14. Therefore, it is possible to determine the value of md as the ratio of the measured frequencies md=ΩD/2ω. If other known methods defined transverse dimension d of the domain of the investigated ferromagnetic substances (for example, using the Barkhausen effect), the number m determines the step md of a jump of the magnetic lines of force in the period of collapse, is equal to m=ΩD/2dω.

Step leap md magnetic field lines is quite small. For example, if m=5...10 and d=0,01...0.1 mm will get md=0,05...1 mm When choosing D=50 mm, the ratio for frequencies Ω/ω=0,002 0,04..., that is, the frequency of the oscillating circuit must exceed the rotational speed of the magnet rotor 1 in 25...500 times depending on the step md. Broadband ΔF low-noise amplifier 12 at the highest rotation speed of the synchronous motor FMAX=100 Rev/sec reaches the value ∆ F=50 kHz. In practice, the value of m can b the th substantially greater than 10, therefore, supply of bandwidth low-noise amplifier 12 should be increased to 200...500 kHz. If the spectral density of the noise σWthis amplifier to choose equal to σW=10-18W/Hz, the RMS noise at the input of the amplifier 12 will be equal to (2...5)·10-16W. For reliable reception of the oscillation frequency ω in an electronic frequency counter 13 should have a signal-to-noise ratio at the input of a low noise amplifier 12 is not less than 10 dB, that is, the power of the useful signal PCon oscillatory LC circuit must be at least PC=(2...5)·10-15W. If the resonant circuit has a resistance REQ=(L/C)1/2Q=10 kω (here Q is the quality factor of the oscillating circuit 100, and (L/C)1/2its impedance is about 100 Ohms), then the amplitude in the oscillation circuit, the oscillation must be at least Um=(PC/REQ)-1/2=(4,5 7,1...)·10-10In that it satises the registration of oscillations even for small values of k, which determines the depth of amplitude modulation χ the magnetic induction B(t), where the amplitude modulation factor

χ=(BMAX-BCP)/2BMAX. For noise reduction should be recommended screening oscillating circuit electromagnetic screen.

You should assume the existence of a number m from SC who grow V=ΩD/2, that may be the subject of special studies. Therefore, in the inventive device applied to the master oscillator 14 with tunable frequency, and the resonant circuit provided with a capacitor with tunable capacitance. In addition, the number m can be determined by various factors - ambient temperature, magnetic induction magnetized ferromagnetic substance, its relative magnetic permeability, etc. that may also be the subject of research. Thus, the claimed technical solution is of interest to physicists dealing with the problems of magnetism and technology of creation of ferromagnetic materials with the required properties.

The proposed device should perform collapsible, so you can test various cylindrical samples of permanent magnets of a ferromagnetic substance. In particular, the folding should be performed magnet-stator 7, so you can collect a cylindrical magnet rotor 1 and the stator magnets 7, which are segments of a cylindrical sample, put on the ends of the magnetic core 8 of the magnet stator 7. When this cylindrical billet of the investigated ferromagnetic substance is cut into three pieces - two for the ends of the magnet stator 7 and one (longer) of the magnet rotor 1. You can also provide for adjustment of the magnetic the x gap b between the magnets, that will allow you to obtain additional information about the behavior of "frozen" in the domains of the magnetic lines of force - dependence of m on the value of clearances b.

It should be stated that the thickness h of the cylindrical permanent magnets must be chosen from the condition h<<D, where D is the average diameter of a cylindrical sample of the magnet. Given end value h, it is necessary to bear in mind the difference of the linear velocity V is from the value of VMIN=Ω(D-h/2)/2 to the value of VMAX=Ω(D+h/2)/2, that is to have a differential speed ΔV=Ωh/2, which will lead to undesirable broadening of spectral lines generated fluctuations and possible to use, instead of the electronic frequency counter, spectrum analyzer. Therefore, to ensure the purity of the experiment should satisfy the condition h<<D, and in the limit it is possible to recommend tapering the ends of the magnet rotor 1 to a value of h=d (it is also possible to taper the ends of the magnets of the stator 7) to obtain single-domain layer at the ends of the magnets.

It should also be pointed out that when the device is assumed that all the magnetic lines of force do "friendly" jump in the same time with some of the domains of the magnet rotor 1 in the other domains of the magnet stator 7 in increments of md. This fact is also subject to experimental verification.

The claimed technical solution meets the criterion of "industrial application is the cost".

Practical models of the inventive device should instruct the enterprises instrumentation for the electrical industry, as well as relevant organizations of the Russian Academy of Sciences.

Literature

1. Leonov B.C. theory of quantized elastic environment, part 2. New sources of energy. - Minsk, 1997, pp.93-104, figure 22, 24.

2. Leonov V.S. Way to create thrust in vacuum and field engine for spacecraft (options). RF patent №2185526, publ. in bull. No. 20 of 20.07.2002.

3. Roshin V.V., Godin S.M. Experimental study of physical effects in a dynamic magnetic system. Technical physics letters, volume 26, No. 24, 2000, p.70-75.

Magnetoelectricity generator, consisting of two magnetically connected thin-walled cylindrical and coaxially spaced permanent magnets of the investigated ferromagnetic substances, one of which is the rotor is rotationally driven by an electric motor, and the other stator is made in the form of a horseshoe structure, the magnetic circuit is the coil inductance, forming together with attached to it a variable capacitor resonant circuit tuned at the frequency ω=ΩD/2md, where Ω is the frequency of rotation of the cylindrical magnet of the rotor diameter D, and m is some integer, to be measured, d is a known transverse size of the domain is used ferromagnetic substance, the wall thickness of the cylindrical magnets h near the magnetic gap is selected many times smaller than the diameter D, for example one or two orders of magnitude.



 

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1 dwg

FIELD: technology for transformation of chemical energy of explosive substance to electromagnetic energy.

SUBSTANCE: autonomous magnetic cumulative generator consists of spiral conductor, current-conductive liner with a charge of substance and initiation system, magnetic stream compression hollow, load and a system of permanent magnets, containing at least one magnet, positioned above spiral conductor with magnetization of parallel surface of spiral conductor, system of permanent magnets contains an additional magnet, positioned above spiral conductor on the side of load with magnetization of perpendicular surface of spiral conductor, while force lines of magnetic field of a system of magnets and in the compression hollow form a closed contour.

EFFECT: decreased dissipation flows beyond limits of magnetic flow compression contour and, as a result, increased starting energy in compression contour of magnetic cumulative generator.

1 cl, 7 dwg

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