RU2603114C1 - Protective device for explosive objects isolation - Google Patents

Abstract

FIELD: blasting operations; protective devices.

SUBSTANCE: invention relates to special equipment and can be used for suppression of fragmentation and high-explosive effects in explosions occurring as result of terrorist or criminal acts. Protective device (PD) for explosive objects isolation with rigid hollow walls and cover, is made dismountable in form of square in plan view of four and more rectangular walls in total amount of multiple 4 connected along perimeter by expandable fasteners. Length L_n+1 of each of following external four walls is determined from ratio L_n+1=L_n+2δ, where L_n is length of inner wall relative to defined outer δ is walls thickness. Walls are made hollow and filled with energy dissipating material. As fasteners at each wall one end and side surface are "Velcro" type connections. Fasteners are made in form of plastic clamps.

EFFECT: invention allows improving protective device properties for isolating of high-explosive and fragmentation effects, especially for ED, located near wall or in corner.

3 cl, 8 dwg

Description

Technical field

The invention relates to the field of special equipment and can be used to suppress fragmentation and high-explosive actions of explosions that occur as a result of terrorist or criminal acts.

State of the art

A close technical solution is known for a device for localizing the effects of explosive mechanisms [1], which contains structural elements that are one or more chambers filled with a wave-extinguishing substance, closed along a contour in a horizontal section and forming an open working cavity from below to accommodate an explosive mechanism with the possibility of selective its full or partial isolation from the surrounding space from above by means of one of the structural elements, as well as a shielding device for fragments. At the same time, the above structural elements are made in the form of a set of screen modules and a cover module. The screen modules are located symmetrically relative to the common vertical axis with gaps on the same plane. The lid module is freely mounted on the end or above the end of the smaller module of the screen with the possibility of moving upward under the action of the detonated explosive mechanism, and the working cavity is formed by the inner walls of the smaller module of the screen and on top of the module-lid.

Common features with the proposed device is the presence of rigid hollow walls and lids filled with energy-dissipating material.

The disadvantages of the technical solution [1] include the following:

1. "the structural elements of the device are made in the form of a set of modules-screens and module-covers", which are not interconnected and, therefore, must be installed by an explosive engineer on the detected explosive device (WU) for several approaches to it, which is unacceptable, since the WU can be radio-controlled;

2. It is not possible to install the device on the VU located near the wall or in the corner of the building (room) due to the limiting effect of the side walls, and it is impossible to move the VU (even touch it).

Another well-known technical solution [2] proposes an explosion localizer (LP), which contains one or more containers filled with a dispersant. The containers are divided by internal partitions, impervious to dispersant, into identical segments in the amount of 3-20 pieces. When the WU installed on a vertical surface is localized, the dispersant is evenly distributed over the tank due to the internal partitions dividing it into closed segments. For the convenience of placing the drug on the wall around its perimeter, loops are made through which a cord passes, put on a nail or an object protruding from the wall.

Thus, [2] can be seen as an attempt to develop a device for protection against the consequences of an explosion of a VU not freely located on the ground (floor), as is usually implied.

Common features with the proposed device is the presence of rigid hollow walls and covers filled with energy-dissipating material.

The disadvantages of the technical solution [2] include the following:

1. The LP is a single structure that completely insulates the VU after covering. Consequently, specialists can access the VU for its study and subsequent neutralization is possible only when the localizer is removed from the VU, which makes it useless, since it ceases to fulfill its protective functions.

2. For the same reason, problems arise with the installation of drugs on WU, located near the wall or in the corner.

In the closest technical solution [3], used as a prototype, a device is proposed, which is a transformable section that includes four protective segments connected to each other using vertical ramrod swivel joints. Each protective segment has a C-shaped section and includes a support base and frontal and back layers of elastic-elastic material connected to it and located at a predetermined distance from each other, in each of which there are one or two metal mesh made with a gap relative to one another, made from a wire of circular cross section with cells of certain sizes, moreover, the cells of metal meshes are uniformly offset from each other. The front and back layers of elastic-elastic material along the perimeter of each segment are interconnected, and the cavity between them is filled with cured foam. The device is equipped with a cover provided with an external frame and attached to the protective segments by means of detachable connections via leaf springs, and each protective segment and the cover are equipped with throttling channels evenly distributed over the entire surface.

Common features with the proposed technical solution is the shape of the device in the form of a rectangular parallelepiped with rigid hollow walls and a lid filled with energy-dissipating material.

The disadvantages of the prototype are as follows:

1. metal mesh made of round wire; leaf springs; ramrod swivel joints; rigid and massive support base, etc. - all this can be a source of secondary fragments;

2. due to the significant mass, the device must be installed by an explosive technician on a detected explosive device (WU) for several approaches to it, which is unacceptable, since the WU can be radio-controlled. Even worse, if the device will be installed by several bomb technicians in one go.

Disclosure of invention

The problem of the present invention is to improve the properties of the protective device (memory) for the localization of high-explosive and fragmentation actions, especially for the VU located near the wall or in the corner.

This problem is solved by the fact that in the known technical device in the form of a rectangular parallelepiped with rigid hollow walls and a lid filled with energy-dissipating material, it is made in the form of a square in plan of four or more walls in a total multiple of 4, connected around the perimeter of the fasteners, this side length L _{n + 1 of} each of the subsequent outer four walls is determined from the relation L _{n + 1} = L _n + 2δ, where L _n is the length of the side of the inner wall with respect to the defined outer; δ is the wall thickness.

Walls are possible in which Velcro joints are made on one end and side surface.

A variant of the protective device is possible, in which plastic clamps can be used as fasteners.

List of drawings

FIG. 1 - embodiment of a memory with four walls;

FIG. 2 - side view of the memory;

FIG. 3 - transformation of the memory for covering the VU at the wall;

FIG. 4 - transformation of the memory for covering the VU in the corner;

FIG. 5 - embodiment of a memory with eight walls;

FIG. 6 - transformation of the memory for covering the VU at the wall;

FIG. 7 - transformation of the memory for covering the VU at the wall;

FIG. 8 - transformation of the memory for covering the slave in the corner.

The implementation of the invention

In the drawings, numbers and letters denote:

1-4 - walls of the memory;

5 - WU;

6 - fasteners (plastic clamps);

7 - a cover;

8 - cover handle;

9 - wall of the building (room);

10 - four external walls of the memory;

δ is the wall thickness;

L ₁ , L ₂ - their lengths.

The simplest embodiment of a modular storage device (Fig. 1) is when it has four identical rigid walls 1-4 made of lightweight porous material (for example, polyurethane foam) containing an internal cavity with extinguishing and (or) energy-dissipating material (for example, extinguishing powders or biphasic liquid dispersant). The walls are assembled into a structure, inside of which a covered VU 5 is placed, tightened around the perimeter by fasteners 6 to give rigidity and integrity. From above, the memory is covered with a lid 7 made of the same materials, but having a handle 8 for removing the lid when viewed from the VU 5 by an explosion engineer (Fig. 2, side view). All materials used must satisfy the condition that there is no formation of secondary fragments during the operation of the HE.

When the detected VU 5 is located near one (Fig. 3) or two walls (Fig. 4), then the memory can be disassembled into separate walls 1-4 by simply opening (cutting) the fasteners 6. Then from the walls 1-4 using new the fasteners 6 are assembled in a U-shaped (Fig. 3) or L-shaped (Fig. 4) structure for covering WU 5 against a wall or in a corner, respectively. On top of new designs is placed cover 7.

It is possible to constructively carry out a memory device with a large number of walls, for example, with eight (Fig. 5) or more, for effective suppression of high-explosive action or improvement of anti-fragmentation protection. In this case, the additional walls 10 will be external to the previously used walls 1-4, now considered as internal. Then the length of the side of the outer walls 10, also having a square shape, will be L ₂ = L ₁ + 2δ (Fig. 5). With a further increase in the number of walls (a multiple of 4, i.e. 12), a new external wall will appear with a side L ₃ defined by the dependence L ₃ = L ₂ + 2δ, etc.

Possible variants of the U-shaped and L-shaped forms of the memory with eight walls for covering the VU 5 at the wall and in the corner are shown in FIG. 6-8, and it can be seen that with an increase in the total number of walls of the memory, the number of possible combinations with the allocation and large cover of the most dangerous directions increases (perpendicular to the wall in Fig. 6 or along the wall in Fig. 7).

To speed up the assembly of the charger and its greater strength, one or more Velcro joints can be placed on one of the ends and one side surface of the walls.

It is simple enough to carry out assembly of the structure using plastic clamps 6, as shown in the drawings.

The proposed memory works as follows.

After detecting the VU 5, at a safe distance from it, the person responsible for installing the VU makes an assessment of the VU and its position relative to the nearest walls or objects (visually, by means of optical devices, etc.).

If WU 5 is located freely, i.e. away from walls and objects, the memory is installed on the VU in one go without any alterations.

If VU 5 is located near the wall or in the corner, then the memory can be disassembled into separate walls by opening (cutting) the fasteners 6. Then, using the new fasteners 6, U-shaped or G-shaped structures are assembled from the walls to cover the VU 5 near the wall or in the corner respectively. On top of new designs is placed cover 7.

Information sources:

1. Patent RU 2224976 from 07/30/2002, F42D 5/04.

2. Patent RU 2204802 of 01.22.2001, F42D 5/04, F42B 33/00.

3. Patent RU 2277694 from 11/18/2004, F42D 5/045.

Claims (3)

1. A protective device for the localization of explosive objects with rigid hollow walls and a cover, made collapsible in the form of a square in plan of four or more rectangular walls in a total number of 4, connected around the perimeter by openings, characterized in that the length of the side L _{n + 1 of} each of the subsequent outer four walls is determined from the relation L _{n + 1} = L _n + 2δ, where L _n is the length of the side of the inner wall with respect to the defined outer wall, δ is the wall thickness, and these walls are hollow and filled ergodissipative material. 2. The protective device according to claim 1, characterized in that, as fasteners on one end and the side surface of each wall, hook and loop fasteners are made. 3. The protective device according to claim 1, characterized in that the fasteners are made in the form of plastic clamps.

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