A device for receiving and converting electromagnetic energy impulse

 

(57) Abstract:

The device is intended for use in high-power pulsed source of electromagnetic energy, based on the effect of the magnetic cumulation of energy, as well as in the coordination of such sources to the load. In the device elements in the magnetic flux compression generator and transformer are made and are as follows. Primary and secondary winding of the transformer and the conductors are coaxially aligned above the elements of the generator. The primary winding is located between the outer secondary and conductors, which in turn is made in the form of a set of insulated conductors located along the axis of the primary winding of the transformer. The invention provides increased efficiency and reduced size. 1 C.p. f-crystals, 1 Il.

The invention relates to the field of high-power pulsed source of electromagnetic energy, based on the effect of the accumulation of magnetic energy. Magnetic flux compression generators (MCG) promising as sources of powerful pulses of electromagnetic energy. With the direct inclusion of the load in the circuit ΜG its effective operation is possible only when nalozeni the imposition of a step-up transformer in this case the load connected to the secondary winding, and UG - primary.

A device for receiving and converting electromagnetic energy impulse (Bukharov C. F. and others "magnetic flux compression generators, transformer output energy", J. "Journal of applied mechanics and technical physics," J. Appl No. 1, 1982, pages 4-10, Fig. 2). The device is made in two separate blocks (block MCG and transformer node) connected with ensuring a reliable contact. The ICG consists of a Central conductor with an explosive charge (CC) and the spiral conductor. Transformer site consists of four cylindrical transformer 32-winding secondary winding located inside the primary coil. MCG is attached to the transformer unit through two current-carrying square plates (conductors) separated by an insulator, each side of which is connected transformer wound cable. The initial energy from the capacitor Bank is fed to the spiral and the center conductor from the input end of the IAG and the load connected to the secondary winding of the transformer.

This device has a large size due to the transformer that connects to o is transformatora and diameter of the helical outer conductor UG (~9:1). This limits the use of the known device, where the dimensions are essential.

Closest to the claimed is a device for receiving and converting electromagnetic energy impulse (A. I. Pavlovsky, etc. "Cascade system with a small generator UG" paper presented at the VI International conference on the generation of megagauss magnetic fields and related experiments", USA, Albuquerque, 92,, collection of papers of part II, page 631, Fig. 1). The device comprises a magnetic flux compression generator, comprising a coaxial Central conductor with an explosive charge and a spiral conductor, a transformer including primary and secondary windings and conductors. One end of the primary winding of the transformer is connected at the output end of the IAG with the Central conductor and the second end of the via conductors - spiral conductor UG.

Transformer site as well as analogue, is a continuation of the overall design and is located behind the generator is a separate unit. The primary and secondary windings are made coaxial. The primary winding is located on the secondary winding. The transformer referred from MKG to not less than an amount equal to Z=0.2 to D, where D is the diameter of penetrator at the transformer site. Conductors are made in two parts. The first part is the length, which includes the transformer from the generator. The second part is located above the primary winding. I.e., the transformer is designed so that the outside is the second part of the conductors, the primary winding under it, and the secondary winding on the inner dielectric frame.

The disadvantages of the prototype are also enlarged the size of the device due to the lengthening of the overall design and the reduction in the output power due to parasitic inductance and losses of the magnetic flux transferred from the primary circuit into the secondary winding.

This invention solved the problem of obtaining a powerful pulse of electromagnetic energy and the negotiation parameters of the generator with the load parameters.

The technical result for the solution of this task was to reduce the size and increase energy output.

This technical result is achieved by the fact that in comparison with the known device for receiving and converting the pulse of electromagnetic energy containing magnetic flux compression generator, comprising a coaxial center conductor with the explosive charge and the spiral is th winding is connected at the output end of the IAG with the Central conductor, and the second via conductors spiral conductor, what is new is the fact that winding of the transformer and the conductors are coaxially aligned above the spiral conductor of the generator on the dielectric frame. The primary winding is located between the outer secondary winding and a current conducting wire, made in the form of a set of insulated conductors located along the axis of the primary winding. The direction of winding of the turns of the primary coil coincides with the direction of winding of the spiral conductor. In addition, the dielectric frame is made cavity, the open part facing the input end of the generator.

When the location of the primary and secondary windings of the transformer and conductors coaxially aligned above the spiral conductor of the generator and the coincidence of the directions of winding of the turns of the primary winding and spiral conductor during the expansion of the Central tube under the action of the products of detonation of the explosive charge is the inductance of the primary winding is reduced. This leads to the increase of the ratio L10/L1Kwhere L10and L1Krespectively the start and end of the inductance circuit g, which in turn allows you to increase the input energy and the coefficient seleniums magnetic field of the transformer site. In this case, the braking of the Central conductor ΜG occurs in a magnetic field with a magnitude of tension greater than the value of the field strength of the spiral conductor. This leads to an increase of the selection of the kinetic energy of the center conductor in the magnetic field energy in the load. Execution of conductors in the form of a set of insulated conductors located along the axis of the primary winding of the transformer, does not hinder the penetration of the magnetic field from the primary winding to the secondary, does not affect the mutual induction between the primary winding and spiral guide UG and increases the output energy by reducing the length of the conductors and its inductance. This embodiment of the transformer windings and conductors and the location of these items on part (30% or more) the length of the generator and on a common axis substantially reduces the size of the device as a whole. The presence of a cavity made in the dielectric frame, allows you to save the transformer node from the failure of the shock wave in the scattering center conductor at least time work ΜG due to the fact that the pressure of the shock wave in the air is much weaker than the material of the frame.

The drawing shows tawlae which contains the magnetic flux compression generator, including coaxial center conductor 1 with a charge of 2 explosives and spiral conductor 3. The transformer includes primary 4 and secondary winding 5, and the conductors 6. One end of the primary winding 4 is connected to the output end of the generator with the Central conductor 1 and the second end of the via conductors 6 spiral conductor 3. The windings 4 and 5 of the transformer and the conductors 6 are coaxially aligned above the spiral conductor of the generator on the dielectric frame 7. The primary winding 4 is located between the outer secondary winding 5 and the conductors 6. The conductors 6 are made in the form of a set of insulated conductors located along the axis of the primary winding 4 of the transformer. In the dielectric frame 7 is made of the cavity 8, the open part facing the input end of the generator. In addition, the source 9 of the initial energy is connected from the input end of the generator. The system is connected from the input end of the generator. The initiation system 10 is located on the explosive charge 2 from the input end of the generator. The load 11 is connected to the secondary winding 5 of the transformer.

In the specific example the primary winding is made by one isolated wine diameter 466 mm The secondary winding has 25 turns, wound with insulated wire with a diameter of 20 mm, and is located directly on the primary winding. Conductors consists of 64 conductors, such as that used for winding the primary winding placed in the slots of the dielectric frame made along an axis forming on the diameter of 420 mm, the ends of the conductors are derived from the output end face and connected to the spiral conductor MCG. The dielectric frame is made from Styrofoam and epoxy compound. The cavity may be formed in the form of an annular groove and completed to a depth of ~250 mm as the primary source of energy for MCG used the capacitor Bank or other UG. System initiation is made in the form of the cap of the detonator located on the explosive charge from the input end of the generator. The center conductor ΜG made in the form of a pipe filled with EXPLOSIVES. The spiral conductor is coaxially aligned with the Central conductor. The elements of the transformer usually take ~45 - 65% of the length of the generator, and the ratio of the radii of the secondary winding of the transformer and the outer helical conductor MCG can vary from 1.8 to 2.5. The total length of the structure in the example to the TCI - 500 mm and an inner diameter of the spiral conductor 240 mm

Does the proposed device as follows. After powering current from the source 9 of the initial energy in the circuit ΜG creates a magnetic flux. After response initiation system 10 and the explosive charge 2 when the desired current value, the Central conductor 1 by action of the products of the explosion scatters in the form of a cone and is connected with a spiral conductor 3. From this moment begins the process of magnetic cumulation. Next, when the claimed running and the location of the transformer magnetic field spirals superimposed magnetic field of transformer site and braking of the Central conductor ΜG occurs in a magnetic field with a magnitude of tension greater than the value of the field strength of the spiral conductor. This leads to an increase of the selection of the kinetic energy of the center conductor in the magnetic field energy in the load.

Thus, compared with the prototype in the inventive device it is possible to reduce dimensions of 1.5 times and increase output energy by 15%.

1. Device for receiving and converting the pulse of electromagnetic energy containing the magnetic flux compression gnic, a transformer comprising primary and secondary windings and conductors, and one end of the primary winding is connected to the output end of the generator with the Central conductor and the second via conductors - spiral conductor, characterized in that the winding of the transformer and the conductors is located coaxially above the spiral conductor of the generator on the dielectric frame, the primary winding is located between the outer secondary winding and a current conducting wire, made in the form of a set of insulated conductors located along the axis of the primary winding, the winding direction of coils which coincides with the direction of winding of the spiral conductor.

2. The device under item 1, characterized in that the dielectric frame is made cavity, the open part facing the input end of the generator.

 

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