Off-line magnetocumulative generator

FIELD: conversion of explosive material chemical energy into electrical energy using magnetocumulative or explosion-magnetic generators for magnetic cumulation of energy.

SUBSTANCE: proposed magnetocumulative generator that depends for its operation on compression of magnetic flux and is designed for use in experimental physics as off-line pulsed energy supply, as well as in studying properties of materials exposed to super-intensive magnetic fields, in experiments with plasma chambers, acceleration of liners, and the like has permanent-magnet system. Spiral magnetocumulative generator is coaxially mounted inside system. Magnetocumulative generator has magnetic flux compression cavity. This cavity is confined by external coaxial spiral conductor and internal explosive-charge conductor, as well as by initiation system. The latter is disposed on one of butt-ends. Permanent-magnet system is assembled of at least one radially magnetized external magnet and axially magnetized internal magnet provided with axial hole. External magnet is disposed on external surface of magnetocumulative generator spiral conductor. Internal magnet is mounted at butt-end of spiral conductor on initiation system side, like poles of external and internal magnets facing magnetic flux compression cavity.

EFFECT: reduced leakage fluxes beyond magnetic-flux compression loop, enhanced initial energy in compression loop of spiral magnetocumulative generator.

2 cl, 2 dwg

 

The invention relates to the conversion of chemical energy explosives (he) in electromagnetic, magnetic flux compression (MCG) or explosive magnetic (VMG) generators based on the compression of the magnetic flux.

The device can be used in experimental physics as a stand-alone pulse energy source, and also in the field of research of properties of substances when exposed to high magnetic fields, in experiments with plasma cells, dispersal liners and other

In the famous MCG tool to create the initial magnetic field can be battery or capacitor system of permanent magnets. Last generators belong to the so-called Autonomous UG. Known Autonomous UG authors Bajana, Wegelin "explosive magnetic power source, A.S. No. 1551214, CL IPC N 02 N 11/00, published in BI No. 13 (part II), 2000, the Device comprises a cylindrical conductor with the explosive charge and the permanent magnets, the gap between which is placed a conductive bus. On the input side of the source bus and the conductor are connected. On the output side of the source bus connected between themselves and with one output for the load, and the second output is connected with a conductor. The number of permanent magnets is equal to the number of tires, and made magnets in the form of prisms, combined in pairs one of the side faces. Once omanye pole prisms facing each other.

The disadvantage of this device is similar is the low gain energy. Limitations associated with low primary inductance busbar MCG.

Closest to the claimed is Autonomous magnetic flux compression generator Abbruscato "Device on the basis of permanent magnets to create the initial current in the spiral VMG", Pribory I Tekhnika eksperimenta "Instruments and experimental techniques", No. 4, 1995, str-145, 1. Autonomous ΜG includes a system of permanent magnets coaxially located inside the spiral system ΜG containing the cavity of the compression of the magnetic flux, limited coaxial outer spiral conductor and an inner conductor with an explosive charge and an initiation system, located at one end. System of permanent magnets in the prototype is made in the form of segments of rings with radial magnetization and parallelepipeds with axial magnetization of samarium-cobalt alloy. The disadvantage ΜG prototype is a small value of the initial magnetic flux (˜1,3 EBM), which corresponds to the initial energy in the circuit of 0.07 j. Limitations associated with significant flows scattering outside contour of the compression that occurs when placing the magnet with axial magnetization on top of the spiral conductor.

This invention solves the problem of the development of spirinolactone MCG with qualitatively improved parameters.

The technical result for the solution of this problem was the decline in flows scattering outside contour compression and, as a consequence, the increase of the initial energy in the circuit compression spiral MCG.

This technical result is achieved by the fact that in comparison with the known Autonomous ΜG, containing a system of permanent magnets coaxially located inside the spiral system ΜG containing the cavity of the compression of the magnetic flux, limited coaxial outer spiral conductor and an inner conductor with an explosive charge and an initiation system, located at one end, what is new is that the system of permanent magnets made in the form of at least one external magnet with radial magnetization, located on the outer surface of the spiral conductor of the IAG and the inner magnet with axial magnetization and an axial hole for detonation of the explosive charge located at end of the spiral conductor system of initiation, with like poles of the external and internal magnets facing the cavity of the compression of the magnetic flux. On the outer side of the permanent magnet is a magnetic core.

When the above-mentioned orientation of the poles of the external and internal magnets all the magnetic flux passes through the cavity of the compression generator. In the prototype is a large part of the magnetic flux, about 70%, is located outside the cavity of the compression on the outside of the magnet with longitudinal magnetization.

Accommodation in the prototype external magnets in the form of parallelepipeds with axial magnetization on top of the spiral conductor leads to the distribution of the magnetic flux partially in the cavity of the compression and partially outside the cavity of the compression. The presence of the magnetic circuit outside the outer magnets will lead to further reduction of the flow in the cavity of the compression. In the inventive generator external magnet has a radial magnetization, the magnetic flux is almost entirely in the cavity of the compression. The inner magnet with axial magnetization increases longitudinal component of the magnetic flux. The presence of the magnetic circuit on the outer side of the permanent magnets optionally concentrating the flow in the cavity of the compression and enhances the achievement of the technical result.

1 shows the inventive Autonomous magnetic flux compression generator.

Figure 2 shows a section a-a figure 1.

Declare Autonomous ΜG includes a system of permanent magnets coaxially located inside the spiral system ΜG containing cavity 1 compression of the magnetic flux, limited coaxial outer helical conductor 2 and the inner conductor 3 with the explosive charge 4, and an initiation system 5, on th is th at one end.

System of permanent magnets made in the form of at least one external magnet 6 with radial magnetization, located on the outer surface of the coiled conductor 2 ΜG and internal magnet 7 with an axial bore and an axial magnetization, located at the end of the spiral conductor 2 from the initiation system 5, with like poles of the external and internal magnets facing the cavity of the compression of the magnetic flux. The magnetic core 8 is located on the outer side of the permanent magnets.

In addition, Autonomous UG contains the load 9 connected to the spiral conductor and the inner conductor on the side opposite the initiation system 5, the dielectric insert 10 and 11 for fixing the magnets and the frame 12 for fixing and insulation spiral conductor MCG.

System of permanent magnets can be made in the form of at least one cylindrical external magnet with radial magnetization and the internal annular magnet with axial magnetization.

In the proposed example of a specific implementation of the Autonomous UG system of permanent magnets made of four flat oxidability magnets with dimensions of 84×64×24 mm and an annular magnet outer diameter 52 mm, an inner diameter of 22 mm, a thickness of 21 mm Diameter spiral INR is asectional MCG - 50 mm, length of 200 mm, the Magnetic core is made of sheet magnetic material, for example steel 10, 1.5 mm thick, so that covers a system of permanent magnets on the outside and has an axial hole for detonation of the explosive charge.

In both versions of magnetic systems in the cavity of the compression is created equal distribution of the magnetic flux.

The unit permanent magnets with magnetic core is a standalone device and is collected separately from the spiral UG, it is also possible to control the initial settings prior to the experiment.

Works offline ΜG as follows. In the free space of the unit permanent magnets installed curb the explosive charge helical MCG. After setting means of initiation and detonation of the explosive charge inner conductor under the action of the products of the explosion starts to expand, taking the form of a cone. Immediately after the start of motion of the conductor circuit of the generator is closed and the magnetic flux covered the turns of the spiral, fully used in the compression process. At this point of contact of the cone of the conductor moves in a spiral coils, resulting inductance of the circuit and its effective area is reduced. The magnetic field is increases and is displaced to the load 9. As displacement and compression ratio, the magician is itogo flow amplification of the induced current and magnetic field energy.

Manufactured and tested a prototype of the inventive Autonomous UG. The initial energy of the magnetic field of permanent magnets of 0.3 j was increased to 35 joules. Thus, in comparison with the prototype, where the initial energy of the magnetic field was 0.07 j, in the inventive Autonomous UG initial energy was 0.3 j, i.e. more than four times. Depending on the choice of the type spiral ΜG gain energy declared Autonomous MCG can also be increased four times.

1. Autonomous magnetic flux compression generator, including a system of permanent magnets coaxially located within the system of helical magnetic flux compression generator, containing the cavity of the compression of the magnetic flux, limited coaxial outer spiral conductor and an inner conductor with an explosive charge and an initiation system, located at one end, characterized in that the system of permanent magnets made in the form of at least one external magnet with radial magnetization, located on the outer surface of the spiral conductor in the magnetic flux compression generator, and the internal magnet with an axial bore and an axial magnetization, located at the end of the spiral conductor system of initiation, with like poles externally the defense and internal magnets facing the cavity of the compression of the magnetic flux.

2. Autonomous magnetic flux compression generator according to claim 1, characterized in that on the outer side of the permanent magnet is a magnetic core.



 

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