RU194598U1 - Ignition initiator - Google Patents

Abstract

The utility model relates to non-electric means of initiation, converting the initial mechanical impulse into a fire force or exciting explosive transformation, which can be used to initiate explosive devices, ammunition or pyrotechnic products for various purposes, that is, any means involving authorized undermining or ignition. When using the utility model, the following technical results are achieved: universality; stable work; reliability of the system as a whole; compactness of the device; security; high shelf life; tightness. The technical result is achieved by means of initiating ignition, characterized in that it contains a housing in which a through axial channel is made with the possibility of receiving a mechanical impulse of impact-shock type, the axial channel has walls, in the axial channel there is an ignition composition that is deposited on the walls of the through channel characterized in that the axial channel is made tapering. 6 c.p. f-ly, 2 ill.

Description

The utility model relates to non-electric means of initiation, converting the initial mechanical impulse into a fire force or exciting explosive transformation, which can be used to initiate explosive devices, ammunition, shells or pyrotechnic products for various purposes, that is, any means involving authorized blasting or ignition.

Means of initiation are devices and devices operating from simple initial impulses to excite the explosive transformation (ignition or detonation) of gunpowder or explosives (PF Bubnov, IP Sukhov Initiation means, Moscow, OBORONGIZ, 1945, p. 4 )

The traditional means of initiation intended to ignite or excite detonation of explosives are igniter capsules used in capsule sleeves or shock ignition tubes, tube igniter capsules, exhaust tubes, detonator capsules. These funds are triggered by a mechanical, such as shock, puncture or grater pulse. Devices consisting of an incendiary capsule igniter and a shock device are called mechanical igniters, and including a capsule igniter and a grater device - grater ignitors.

The term "igniter" in the materials of this application is intended to mean any device that performs the function of ignition in pyrotechnic or explosive devices.

In shock igniters, an igniter capsule or a detonator capsule is conventionally used as an initiating element. As a rule, capsules are placed in close proximity to the charge of an explosive or pyrotechnic substance [1] or at a certain distance from the charge (through an axial fire-transfer channel) [2, 3].

In grate type fuses, grate igniter caps are used, in which the start is carried out by moving a special part (grater) in the ignition composition [4, 5] or in the grate ignition unit with a stop retarder due to pulling out the cord [6].

Practice shows that fuses with grater capsules most often use a composition with red phosphorus, according to which, significant efforts and metal elements are not required in the design of the igniter. Red phosphorus fuses are not reliable, overly sensitive, hygroscopic and unsafe. Due to their low sensitivity, fused ignitors that do not contain phosphorus compounds require the use of metal actuation units and considerable efforts during initiation. Such fuses have a limited storage life due to the hygroscopicity of the compositions used and the corrosion of metal elements.

The implementation of the means of initiation individually, depending on their purpose. Even in the designs of igniters of the same type, the main functional elements may vary and not be interchangeable.

The closest analogue of the claimed utility model is a means of initiating ignition, comprising a housing in which a through axial channel with walls is made. In this case, an igniter composition is located in the axial channel, which is deposited on the walls of the through channel [7].

The task to which the present utility model is directed is to obtain a safe, reliably functioning and compact initiator suitable for initiating a wide range of explosive and pyrotechnic means.

When using the utility model, the following technical result is achieved: the compactness of the device and the reliability of the system as a whole while ensuring universality.

The technical result is achieved by means of initiating ignition, characterized in that it contains a housing in which a through axial channel is made with the possibility of receiving a mechanical impulse of impact-shock type, the axial channel has walls, in the axial channel there is an ignition composition that is deposited on the walls of the through channel characterized in that the axial channel is made tapering.

In some embodiments, the inner surface of the channel walls is smooth or rough; a flange is made along the perimeter of the upper opening of the channel; in the means of initiation, a through slot is made; from the side receiving the initial impulse, the initiation means is sealed; initiation means is made of a polymeric material.

In FIG. 1 shows types of ignition initiation means in section and in plan view.

Figure 2 presents the image of the upper part of the hand grenade in section, in which the means for initiating ignition is installed.

The initiation means 1 has a through axial tapering channel 2, on the walls of which near the inlet there is an igniter composition 3. A flange is made around the perimeter of the upper opening of the channel 4. A through-hole is made through the initiation means 5. The initiation means is sealed from the side receiving the initial impulse by a sealing membrane 6. On the shoulder 4 is located the capsule 7.

The ignition initiator operates as follows.

The initiating means is installed in an explosive device or pyrotechnic product or it is first connected to a charging flask, and then the resulting structure is placed in a device or product. The subsequent implementation is disclosed by the example of a shock device, for example, for a hand grenade (see Fig. 2), containing a housing 8, in which the initiating mechanism 9 is arranged coaxially, the shock-and-grab action, including the striker and the hammer, the means of initiation 1. The grenade contains a stop 10, holding the spring 11 until the moment of use and connected with the safety bracket 12. Temporary immobility of the bracket and stopper is provided by a cotter pin and ring (not shown).

To activate, the safety bracket 12 is pressed tightly against the housing 8 and the cotter pin is pulled out by the ring, releasing the stopper 10 and providing free movement for the bracket 12. When lifting the bracket 12 upward, the stopper 10 leaves the hole in the housing. In the absence of a retaining element, the spring 11 unclenches, giving movement to the percussion mechanism 9 along the housing 8 towards the initiating means 1. Moving, the striker destroys (breaks through) the sealing membrane 6 and enters the ignition channel 2 of the initiating means. At the time of the strike, the striker has a direct impact-grater effect on the igniter composition 3 and forms a force of fire, which, passing through the igniter through channel, ignites.

When using the igniter capsule 7, the striker strikes the capsule, which ignites the initiated charge with a beam of fire.

The execution of the axial channel 2 tapering allows you to increase the contact area of the striker with the igniter composition 3 deposited on the walls of the through channel. This design allows to increase the reliability of operation and the compactness of the means of initiation, which makes it possible to unify the means of initiation for working with various explosive and pyrotechnic devices and igniter compositions.

In the case of using the initiating means in accordance with the utility model, it does not take much effort to create an initial (shock or grater) impulse. However, such an effect is sufficient to cause strong near-wall friction, which forms stable combustion.

The utility model provides high functional reliability, accuracy, has compactness and simplicity. The production of the proposed product is as technologically and safely as possible.

The reliability of the means of initiation is associated with the guaranteed receipt of an igniter pulse in any conditions of its application. Its versatility makes it possible to use in initiators and devices a wide range of various action principles and power characteristics. Depending on the initiation method and the composition used, using the claimed means, it is equally effective to initiate combustion (for example, a powder or pyrotechnic charge), smoldering (for example a smoke generating device), an explosion (for example an explosive or pyrotechnic device). The proposed means of initiation is simple and economical in production and does not require special skills when handling it.

Sources of information:

1 - RU 111908 U1, F42B8 / 26, 12/27/2011;

2 - RU 101539 U1, F42C19 / 08, 01.20.2011;

3 - RU 2473868 C2, F42C14 / 02, 01/27/2013;

4 - US 3194161 A, F42B8 / 26, 1965;

5 - DE 1081354 V, F42B8 / 26, 1960;

6 - GB 904348 A, F42C15 / 32, 08/29/1962.

7 - “Ignition charge”. Encyclopedic Dictionary F.A. Brockhouse and others. St. Petersburg. Brockhouse-Efron Publishing House. 1890-1907.

Claims (7)

1. Means of initiation of ignition, characterized in that it comprises a housing in which a through axial channel is made with the possibility of receiving a mechanical impulse of shock-and-grater type, the axial channel has walls, an igniter composition is located in the axial channel, which is deposited on the walls of the through channel, characterized the fact that the axial channel is made tapering. 2. The initiation tool according to claim 1, characterized in that the inner surface of the channel walls is made smooth. 3. The means of initiation according to claim 1, characterized in that the inner surface of the walls of the channel is made rough. 4. The initiation tool according to claim 1, characterized in that a flange is made along the perimeter of the upper opening of the channel. 5. The initiation tool according to claim 1, characterized in that it has a through slot. 6. The means of initiation according to claim 1, characterized in that from the side receiving the initial impulse, it is sealed. 7. The initiation tool according to claim 1, characterized in that it is made of a polymeric material.

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