RU2679768C1 - Device for developing electrical energy in artillery shell - Google Patents

Abstract

FIELD: military equipment.SUBSTANCE: invention relates to self-contained artillery shells, providing power to their various systems. Annular permanent magnet with radial magnetization, associated by the forces of mutual attraction with a ferromagnetic washer, fixed at the end of the guide rod of non-magnetic anti-friction alloy, has the ability under the action of inertial forces to overcome the force of attraction to the ferromagnetic washer and move along the guide rod to the cup core armor type of ferrite, fixed at the base of the guide rod and containing an inductance coil. As a result, a voltage is generated in the inductor for charging the capacitor of the projectile's power supply source. Axes of symmetry of the parts coincide with the longitudinal axis of the projectile. Constructive simplicity of the device allows you to create for artillery shells power sources with small size, low weight and low cost.EFFECT: ensuring security during long-term storage of the projectile, increasing the amount of energy produced by the device and its high reliability.1 cl, 1 dwg

Description

FIELD OF TECHNOLOGY

The present invention relates to stand-alone devices of artillery shells, providing power to their various systems.

BACKGROUND

The development and application of various types of guided artillery shells and shells with electric fuses is associated with the need for the availability of power sources in them. Such power sources must withstand storage for many years, and then provide the projectile equipment with electricity when exposed to large inertia forces arising from a shot or when a flying projectile encounters an obstacle.

To solve this problem, chemical energy sources are widely used. As such sources, lithium batteries are often used. The creation of such batteries with guaranteed sufficiently long shelf life, especially at low temperatures, is an important, not yet solved task of modern instrumentation. The disadvantages of such systems also include a decrease in the safety and reliability of shells containing ready-to-use current sources.

In accordance with the patent of the Russian Federation No. 232,461, batteries are used, for activation of which a liquid electrolyte is stored in them during a shot, stored separately in glass ampoules. Such a rather complicated and expensive device cannot always be placed in shells, especially in shells of medium and small caliber.

Electric generators driven by a free flow of air are also used. Such an expensive technical solution can only be used on large-caliber shells.

Known RF patent No. 2121177 for "Pulsed magnetoelectric generator", in which an inductor is located inside an annular magnet with longitudinal magnetization. A magnet with a coil is covered by a ferromagnetic anchor. An anchor under the influence of inertial forces has the ability to free itself from the mount and move away from the magnet with the coil, as a result of which an electric pulse is generated in the coil. The disadvantages of the design and the materials used determine the low efficiency of the generator when generating a short voltage pulse in time, and also do not exclude the possibility of destruction of the device at high values of inertia.

Known RF patent No. 2535313 for "Programmable projectile", which provides a link to patent CH586384, adopted in this application as a known prototype. In this patent, a soft iron driving belt and an annular permanent magnet are linearly accelerated by a shot being displaced relative to the induction coil in the direction of the projectile axis, which creates a voltage in the coil that charges the capacitor. An important useful property of constructing a system according to the indicated method is the absence of a power source in the projectile before firing. This ensures the absolute safety of the projectile during its storage and transportation. According to this publication, to prevent the destruction of the device due to longitudinal inertial influences, lateral accelerations and rotation of the projectile, structural measures are needed that increase the price of the device, require more space in the projectile and make it heavier.

Thus, in the technical field there is a need for a simpler and more economical source of electrical energy in artillery shells.

SUMMARY OF THE INVENTION

The problem to which the invention is directed is to create a device for generating electrical energy in a projectile free from these drawbacks.

The proposed device contains an inductor and an annular permanent magnet that is able to move relative to the inductor along the axis of the projectile under the action of inertia coils, and in addition, it contains a base with a guiding rod made of bronze, a cup of an armored type core made of ferrite, in which an inductor associated with the base of the guide rod, a ferromagnetic washer mounted on the end of the guide rod, and an annular permanent magnet with radial magnetization connected by imnogo attraction to the ferromagnetic washer, wherein the magnet is removed along the guide rod at a distance from the core plates and is able under the influence of inertial forces to overcome the force of attraction to the ferromagnetic washer and cup to move the core along the guide rod.

In this case, a magnetic field with a rapidly increasing amplitude appears in the core, and a corresponding voltage appears on the coil. The axis of symmetry of the parts of the device coincide with the longitudinal axis of the projectile.

The claimed device can be used both to generate electrical energy at the time of the shot, and to generate electrical energy at the moment of the meeting of the projectile with an obstacle. In these situations, the directions of the inertia forces interacting with the device are opposite to each other. This circumstance should be taken into account when installing the device in shells.

The technical result of the invention is to ensure safety during long-term storage of the projectile, an increase in the amount of generated energy and high reliability of the device. The structural simplicity of the product allows you to create power supplies with small dimensions, low weight and low cost. The specified technical result is ensured by constructive measures and the use of appropriate materials.

BRIEF DESCRIPTION OF THE DRAWING

The drawing shows a structural diagram of the proposed device.

DETAILED DESCRIPTION OF THE INVENTION

The invention is illustrated by the structural diagram shown in the drawing.

According to the claimed invention, on a guide rod 1, connected with its base to the shell of the projectile, a cup of an armored type ferrite core 2 is fixedly mounted, containing an inductor 3, and at some distance from the cup there is an annular magnet with radial magnetization 4, connected by magnetic forces with ferromagnetic washer 5, mounted on the end of the guide rod 1.

Under the action of inertial forces significantly exceeding the forces of mutual attraction of the ring magnet 4 to the ferromagnetic washer 5, the ring magnet 4 moves in the direction indicated by the arrows along the guide rod 1 to the core cup 2 with the inductor 3. In this case, a magnetic field arises in the core with increasing amplitude, and the corresponding voltage is generated in the coil.

Due to the high speed of this process, the voltage that appears in the coil is a short pulse lasting about 10 ^-4 seconds. To efficiently convert the energy of such a magnetic field into electrical voltage on a coil, a core of an armored magnetic core made of ferrite is used. In this case, it becomes possible to use a frameless inductor, which helps to reduce the size of the device. In the center of the cup there is an opening for the passage of the guide rod.

The base with a cylindrical guide rod is made of bronze - a non-magnetic anti-friction alloy with good anti-seize properties. The diameter of the hole of the annular magnet exceeds the diameter of the guide rod, forming gaps between these parts. When a ring magnet with radial magnetization moves along the guide rod with high speed, ring currents arise, the magnetic field of which, interacting with the magnetic field of the magnet, helps to center the magnet relative to the guide rod. The measures taken ensure reliable operation of the device.

The ring magnet has radial magnetization and, when interacting with the core cup, provides an effective change in the magnetic field in the core and the generation of the corresponding voltage in the inductor.

The ferromagnetic washer mounted on the end face of the guide rod, due to the forces of mutual attraction with the ring magnet, ensures its reliable fixation in the initial position in the conditions of storage and transportation of the projectile, as well as the absence of its movement to the shot.

A cover fixed to the end of the guide rod protects the device from foreign particles entering it.

After the generation of a voltage pulse on the inductor and the charge of the capacitor of the projectile power source, the device cannot be ruled out as a result of the magnet’s impact on the core cup. Since the device has previously completed its task, the noted phenomenon does not matter.

The axis of symmetry of the parts of the device coincide with each other and coincide with the longitudinal axis of symmetry of the projectile, which helps to reduce the impact on the operation of the device of the accelerations that occur when the projectile rotates.

The applicant appends the claims, which reflects the essential features of the invention.

Claims (1)

A device for generating electric energy in an artillery shell containing an inductance coil and an annular permanent magnet located in the shell, moving under the action of inertial forces relative to the coil along the axis of the projectile, which creates a voltage in the coil that charges the capacitor, characterized in that it contains a base with a guide rod made of bronze, a cup of an armored type core made of ferrite, in which an inductor connected to the base of the guide rod is placed, ferromagnet the final washer mounted on the end of the guide rod and the annular permanent magnet with radial magnetization, connected by forces of mutual attraction with the ferromagnetic washer, while the magnet is removed along the guide rod at a certain distance from the core cup and is able to overcome the forces of attraction to the ferromagnetic under the action of inertial forces the washer and move to the core cup along the guide rod, and the axis of symmetry of the device parts coincide with the longitudinal axis of the projectile.

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