RU2171446C1 - Device for localization of actions of explosive mechanisms with additional protection - Google Patents

Abstract

FIELD: special equipment, applicable for deactivation of dangerously explosive objects. SUBSTANCE: the device suppresses the high-explosive and thermal actions, it has a container of elastic material filled with an incombustible mixture, antifragmentation shield made in the form of a "skirt" of material based on high-modulus fibers. Attached in the lower section of the shield is an additional load in the form of a toroidal chamber filled with incombustible liquid. The above load prevents penetration of the blast wave of fragments between the device for localization of actions of explosive mechanisms and the bearing surface. A cavity is made in the lower section of the container to accommodate the suspicious object and separate it from the surrounding space. The invention does not require any displacement of the dangerously explosive object or any other actions on it, which enhance the probability of explosion. EFFECT: enhanced efficiency of protection of people and structures against high-explosive, thermal and fragmentation action at actuation of explosive devices. 2 cl, 1 dwg

Description

 The invention relates to the field of special equipment and is used in the disposal of explosive objects. The presented device for localizing the effects of explosive devices reduces shrapnel and thermal effects during an explosion, dampens shock and acoustic waves.

 Known devices in the form of cylindrical chambers and containers made of high strength steels and alloys. For example, manufactured by the research and production enterprise "Ecotest", the city of Sarov, Nizhny Novgorod region. These devices are able to withstand high-explosive fragmentation of explosive products when explosive devices are triggered, the power of which does not exceed a given value.

 Also known is a protective device for localizing the explosion (see AS No. 1596925, MKI G 01 N 33/22, publ. 07/10/95), containing a rotational sheath and an inner shell in the form of ring strips of sheet material with a regulated gap.

 An explosive reservoir with an external protective shield is also known (see US Pat. No. 4,833,967, MKI F 42 B 37/00, published June 30, 89).

 A common drawback of these container-type devices is the need for delivery and loading into the container of an explosive device, or an object that may turn out to be. During such delivery, the likelihood of detonation of explosive devices increases and, if this delivery is carried out by people, the risk becomes unreasonably great. Mechanisms for delivering explosive items are complex and expensive. Another disadvantage is that with a bomb charge power exceeding the container's safety margin, its destroyed metal structures will be additional damaging elements. In addition, the metal, being a crystalline substance, conducts acoustic waves well, into which the shock wave is converted after collision with an insurmountable obstacle for it in this case, the wall of the device. Powerful acoustic signals can also be a damaging factor, affecting primarily the hearing organs.

 A device (bomb inhibitor) is known according to US patent N 4836079, MKI F 4 2 B 33/00, C 06 B 21/00, published 06.06.89, containing a flexible container filled with liquid (usually water) and a handle. The disadvantage of this invention is the lack of a layer that provides protection from fragments of the shell of an explosive device and other solid (shot, buckshot, etc.) bodies that start explosive devices to increase their damaging ability.

 As a prototype that does not have the disadvantages of the above analogues, the device for localizing the effects of explosive mechanisms according to the patent of the Russian Federation N 2125232, MKI F 42 B 39/00, F 42 B 33/00, published on 01.20.99, was selected. The device contains one or more containers with a shell made of elastic material filled with a non-combustible liquid, with the formation of a cavity in the lower part, and a handle for delivery and installation. An anti-splinter screen made in the form of a “skirt” of high-modulus fabric is additionally installed along the contour of the peripheral part of the tank. The energy of a shock wave passing through a liquid is spent on the formation of turbulent flows and is extinguished due to surface tension and viscosity. At high-speed loads, for example, when fragments hit, these forces are so great that the resistance of the liquid mass to high-speed loads is comparable to the resistance of solid crystalline bodies. Moreover, the use of a liquid as an obstacle for a shock wave is preferable, since when the localizer of explosive devices is destroyed, the liquid does not become a dangerous damaging element, and the energy of the shock wave is spent on its dispersion.

 The disadvantage of the prototype is that, the presented device prevents the penetration of a shock wave (gauge pressure) between it and the supporting surface to a lesser extent than in other directions and, therefore, has a weak spot that reduces the resistance of the device to the destructive effects of the explosion. This is confirmed by the results of ongoing tests with photography at the time of the explosion. Considering that the lower part of the device and the anti-splinter shield are raised due to the pressure caused by the explosion, fragments flying apart after the explosion in the directions close to horizontal can also penetrate between the device and the supporting surface.

 The aim of the present invention is to eliminate the disadvantages of the prototype, namely: the creation of a device that prevents the penetration of a shock wave (gauge pressure), as well as fragments between it and the supporting surface.

 This goal is achieved by the fact that an additional load is attached to the bottom of the screen, which, when destroyed, does not form damaging elements. This cargo can be made in the form of a toroidal chamber filled with a non-combustible liquid. Such a load prevents the shatterproof screen from being lifted and at the same time itself is an obstacle to the passage of the shock wave and other effects of explosive devices.

 The present device for localizing the effects of explosive devices is illustrated in the drawing, which shows a cross-section of a device for localizing the effects of explosive mechanisms with one working capacity, where: 1 - handle; 2 - an explosive device placed in a suitcase (suspicious item), 3 - the working cavity of the device, 4 - a container of elastic material (rubber), 5 - non-combustible liquid, 6 - anti-shatter screen made of Kevlar fabric, 7 - additional load.

 A device for localizing the effects of explosive devices works as follows.

 The device for localizing the effects of explosive devices using the handle 1 is installed on the detected suspicious object 2 in such a way that the cavity 3 made in the lower part of the device allows to completely separate the detected suspicious object 2 from the surrounding space. In the case of an explosion of an object so covered, the explosion energy and most of the fragments are absorbed by the elastic, elastic shell 4 and non-combustible liquid 5. The remaining part of the fragments is held up by the anti-fragmentation screen 6, while the additional load 7 prevents it from rising and additionally absorbs the energy of the explosion and fragments.

 Thus, the proposed device for localizing the effects of explosive devices provides effective protection of people and structures from high-explosive, thermal and fragmentation when explosive devices are triggered.

 The use of the proposed technical solution does not require additional investment in places of its use.

Claims (2)

 1. A device for localizing the effects of explosive mechanisms, containing one or more containers made of elastic material filled with a non-combustible liquid, an anti-shatter screen made in the form of a "skirt", fixed along the contour of the peripheral part of the tank, characterized in that it is attached to the lower part of the anti-shatter screen additional cargo that does not give splinters in an explosion.  2. The device according to claim 1, characterized in that the additional load is made in the form of an elastic toroidal chamber filled with a non-combustible liquid.