RU201446U1 - DEVICE FOR INITIATING DETONATING EXTENDED CHARGES - Google Patents

Abstract

The utility model relates to the field of testing and measuring technology, namely to the field of explosives, as well as the development of tools and systems for onboard explosive (pyro-) automation, and can be used at objects of rocket-space, aviation, oil, special technology, socio-economic , scientific and military purposes, where instant remote separation of structural elements and (or) the activation of units (actuators) is required. The device for initiating detonating elongated charges contains a highly stable detonating cord 1, a radial limit switch 2, detonating elongated charge 3 and a detonation initiator 4 (electric detonator). Depending on the problem to be solved, for example, for the use of several charges from one initiator, the device can use the end stop 5 and (or) the separator 6. carried out along the lateral surface of the detonating elongated charge or from the end surface of the detonating elongated charge along its axis. 3 C.p. cl, 4 dwg

Description

The utility model relates to the field of explosives, as well as the development of means and systems for onboard explosive (pyro-) automation and can be used at objects of rocket-space, aviation, oil, special equipment for socio-economic, scientific and military purposes, where instant remote control is required. separation of structural elements and (or) the use of nodes (executive elements).

Known technical solution described in the patent of the Russian Federation No. 2463544, IPC F42B 3/08 publ. 10.10.2012, entitled "Linear separation device on an extended shaped charge" containing an extended shaped charge of a blasting explosive, a charging chamber, a cut-off barrier, an overhead trap for intercepting the remains of a shaped charge, racks for attaching an extended shaped charge, wave-carrying and debris trapping elements. From the rear side of the elongated shaped charge, an electric cable is passed through a through hole in the rack, which is in contact with the shell of this charge from its rear side, so that the symmetry axes of the electric cable and the elongated shaped charge mutually intersect, and an element of the attachment point is placed in the cavity of the trap parachute system and / or inflatable device in transport position.

The disadvantages of this technical solution are as follows:

- a decrease in the reliability of cutting the elements located in the cavity of the behind-the-barrier trap and the electric cable located on the rear side of the linear shaped charge, or an increase in the mass of the explosive in the shaped charge;

- complication of the layout of the separated structural elements to ensure their predetermined location near the shaped charge.

The closest and selected as a prototype of the initiation device is a technical solution called "Fuse for an extended shaped charge (KRASNOV-ZAPAL) and a method for initiating a charge with a longitudinal shaped charge", described in RF patent No. 2 481 546, IPC F42B 3/087, publ. 05/10/2011, having an input and output of an initiating pulse, including a high-velocity explosive with a high detonation velocity and conductors of the initiating pulse.

The disadvantages of this technical solution include the bulkiness of the device, which limits the possibility of its use in closed volumes of the carrier, as well as:

- a significant increase in the total mass of explosives, when using the specified fuse, which increases the side effect of the explosion on surrounding objects and the need for additional protective measures;

- when using several fuses, the need to use several electric detonators and their simultaneous detonation;

- low resistance of this fuse to external influences, such as high overloads (~ 1000 g) and vibration.

The task of the proposed technical solution is to improve the quality, reliability and stability of the DUZ or other executive elements, as well as to reduce the total number of initiation means on board the carrier.

The technical result consists in the fact that it was possible to avoid the occurrence of a lateral drift of the shaped charge jet from asymmetric collapse of the shaped recess and to increase the cutting (breakdown) ability of the charge in the initial section and beyond. The small dimensions of the detonating limit switch and the highly stable detonating cord, as well as the flexibility of the latter, made it possible to use them in conditions of severe limitation of the overall dimensions of products and to use from one electric detonator (initiator) simultaneously up to 5 actuators, such as DUZ, UKZ, etc.

The task is achieved by the fact that in the device for initiating detonating elongated charges, which has an input and output of an initiating pulse, including a high-speed explosive with a high detonation velocity and conductors of an initiating pulse, the conductors of an initiating pulse are made in the form of a detonating cord installed in a detonating tip located at the end detonating extended charge.

In addition, in the device for initiating detonating elongated charges, for the purpose of the convenience of the arrangement of the device in a confined space, when the conductor of the initiating pulse is installed into the detonating end switch from the end, the detonating end switch is made end.

In addition, in the device for initiating detonating elongated charges, for the purpose of the convenience of the arrangement of the device in a confined space, when the conductor of the initiating pulse is installed into the detonating limit switch from the (lateral) radial surface, the detonating limit switch is made radial.

In addition, in the device for initiating detonating elongated charges, in order to reduce the side effect on the surrounding structural elements, increase the reliability of operation and expand the operating range, the initiating pulse conductors are made in the form of a highly stable detonating cord.

The analysis of the prior art carried out by the applicant, including a search for patent and scientific and technical sources of information and the identification of sources containing information about analogues of the claimed utility model, made it possible to establish that the applicant did not find an analogue characterized by features identical to all essential features of the claimed utility model, and the definition from the list of identified analogs of the prototype, as the closest analogue in terms of a set of features, made it possible to identify a set of distinctive features significant in relation to the technical result perceived by the applicant in the claimed object, set out in the utility model formula.

Consequently, the declared utility model meets the requirement of “novelty” under the current legislation.

FIG. 1 shows the external view of the device when one detonating extended charge (DUZ) is activated;

FIG. 2 shows the appearance of the radial limit switch;

FIG. 3 shows the appearance of the end end piece;

FIG. 4 shows the external view of the separator with installed highly stable detonating cords.

The following positions are indicated in the drawings:

1 - highly stable detonating cord;

2 - radial limit switch;

3 - detonating extended charge (DUZ);

4 - detonation initiator (electric detonator).

5 - end end piece.

6 - separator.

The device for initiating detonating elongated charges contains (see Fig. 1) a highly stable detonating cord 1, a radial limit switch 2, detonating elongated charge 3 and a detonation initiator 4 (electric detonator). Depending on the problem to be solved, for example, for the use of several charges from one initiator, the end limit switch 5 and (or) the separator 6 can be used in the device.

The principle of operation of the proposed device is as follows. After applying an electric pulse to the electric detonator 4 (Fig. 1), the latter is triggered and initiates a detonation wave in the highly stable detonating cord 1 (Fig. 1). The detonation wave is transmitted through a highly stable detonating cord 1 to a radial limit switch 2 (Fig. 1) located at the end of the DUZ charge 3 (Fig. 1). The radial limit switch 2 serves as an amplifier for the detonation wave (initiating pulse) and ensures the initiation of the DUS along its axis. DUZ with a profiled cumulative notch is directed to the cut obstacle, when it is triggered, the obstacle is cut.

Depending on the conditions of use and the need to activate one or another element of explosive (pyro-) automation (actuator), both radial 2 and end 5 limit switches, shown in Fig. 2 and FIG. 3 respectively. Terminals 2 and 5 consist of a sealed metal body connected to a highly stable detonating cord 1. The highly stable detonating cord 1 is a flexible linear charge consisting of an explosive core, on which organic shells of protective and strengthening varnish are sequentially applied. On top of the reinforcing varnish, a braid of polymer threads is applied. Due to this structure, the highly stable detonating cord 1 has a stable and high detonation velocity and is flexible and has high physical and chemical stability.

The highly stable detonating cord 1 can be initiated from the end or through the side surface.

Highly stable detonating cord 1 and end switches 2 and 5 have compact dimensions, when initiated, they have a small side effect on surrounding objects, are able to withstand high overloads up to 1000 g and higher, are resistant to radiation, temperature differences from minus 60 to plus 60 ° C, action deep vacuum and other external influences.

To transfer the detonation wave from one initiator (electric detonator) to several actuating elements, a separator 6, shown in FIG. 4. Sections of a highly stable detonating cord 1 are fixed in the separator body 6. Initiation is carried out from the end of the separator 6.

Experimental studies and gas-dynamic calculations have confirmed the technical feasibility of the claimed device. Tests have been carried out, which have shown the high efficiency of the device of extended detonating charges.

For the declared utility model in the form as it is characterized in the utility model formula, the possibility of its implementation and the ability to ensure the achievement of the specified technical result have been confirmed. Consequently, the claimed utility model meets the “industrial applicability” condition.

Claims (4)

1. A device for initiating detonating elongated charges, which has an input and output of an initiating pulse, which includes a high-speed explosive with a high detonation velocity and conductors of an initiating pulse, characterized in that the conductors of the initiating pulse are made in the form of a detonating cord installed in a detonating limit switch located at the end of the detonating extended charge. 2. The device for initiating detonating elongated charges according to claim 1, characterized in that the detonating limit switch is end-end. 3. The device for initiating detonating elongated charges according to claim 1, characterized in that the detonating limit switch is radial. 4. The device for initiating detonating elongated charges according to claim 1, characterized in that the conductors of the initiating pulse are made in the form of a highly stable detonating cord.

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