RU2171553C1 - Pulse blast source of light - Google Patents

Abstract

FIELD: light sources used for recording of fast processes including blast experiments. SUBSTANCE: pulse blast source of light presents explosive charge with initiation unit and includes vessels with oxygen and aluminum powder. EFFECT: prolonged duration of light burst with intensity sufficient to record fast processes. 1 dwg

Description

 The invention relates to the field of pulsed explosive light sources and can be used to register fast-moving processes, including in explosive experiments.

 Known "Pulse photo-lighting quartz lamps" type IFP.

 IFPs are a gas-discharge source of powerful short-term light flashes of repeated action.

 These lamps are made in the form of a quartz spiral with the main electrodes welded at its ends, which are equipped with leads for connecting the lamp to the electrical circuit.

 The lamp closest to the invention is the IFP-40,000 lamp.

The main technical characteristics of IFP-40,000:
- dimensions of the lamp 24 x 1230 (mm ² x mm ³ );
- dimensions of the luminous part 16 x 1000 (mm ² );
- flash energy 40,000 J
- operating voltage 5.5 kV;
- power 1333 W;
- flash frequency 0.5 Hz;
- coverage 140,000 k.s;
- flash duration 1500 μs;
- service life of 5 thousand flashes;
- water cooling.

 (A. S. Dubovik "Photographic registration of fast processes" Moscow, "Science", 1984).

 Known photo-lighting quartz lamps do not allow to obtain the required flash duration, and complicated maintenance (energy sources and cooling) make the use of IFPs in explosive experiments expensive and problematic.

Closest to the largest number of matching features is the solution described in
M. Held., "The Orthogonal Synchro-Streak Technique as a Diagnostic Tool, Particularly for Shaped Charge Jets"., Propellants, Explosives, Pyrotechnics v. 11, 1986,
the so-called "Argon bomb", based on the phenomenon of inert gas emission during the passage of a shock wave through them.

 This solution is chosen as a prototype.

 A pulsed explosive light source consists of an explosive charge (BB) with an initiating device and a container with an inert gas (argon). The duration of a light flash is determined by the propagation time of the shock wave through the capacitance.

 In practice, the duration of the light flash of the Argon bomb does not exceed a few tenths of a millisecond.

 Known pulsed explosive source does not allow to register fast processes lasting more than 1.5 ms.

 The technical task is to develop a pulsed light source lasting up to 10 ms.

 The technical result consists in increasing the duration of the light flash at an intensity sufficient to register the investigated processes on film.

 The technical result is achieved in that in a known pulsed explosive light source containing an explosive charge with an initiating device, a container with gas. Between the tank with gas and the explosive charge placed a tank with a combustible substance. Aluminum powder was chosen as the combustible substance, and oxygen was used as the gas, while the explosive charge was installed close to the container with the combustible substance.

 The burning of aluminum powder in oxygen, initiated by the products of the explosion of an explosive charge, allowed an increase in the duration of the light flash.

 The presence of distinctive features from the prototype suggests that the proposed technical solution meets the criteria of the invention of "Novelty."

 The inventive device meets the criterion of "Inventive step", since the search process did not reveal sources of fame, which would describe the technical result achieved by the proposed device.

The drawing shows a General view of the device pulsed explosive light source, where:
1 - initiating device,
2 - explosive charge,
3 - container with aluminum powder,
4 - capacity with oxygen.

The device operates as follows:
When the explosive charge is activated by the initiating device, explosive explosion products are formed, which ignite the aluminum powder, while throwing it into the environment with oxygen placed in the tank. The combustion of powder in oxygen is a light source, a duration sufficient to register fast-moving processes on film.

 In support of the criterion of "industrial applicability", we can consider an example of a specific implementation of the device.

 TNT TNT blocks were used as the explosive charge; a standard electric detonator was used in the initiation system.

 Aluminum powder corresponded to GOST 5494-75. Oxygen from the cylinder through the gearbox is pumped into a plastic bag to atmospheric pressure.

 The inventive pulsed explosive light source was tested in experiments on recording parameters of cumulative jets and damaging fragments. The duration and intensity of the pulsed explosive light source made it possible to register the required parameters.

Claims (1)

 A pulsed explosive light source containing an explosive charge with an initiating device, a gas container, characterized in that a container with a combustible substance is placed between the gas container and the explosive charge, and aluminum powder is selected as the combustible substance, and the gas used is gas oxygen, and the explosive charge is installed close to the tank with a combustible substance.