RU2175109C1 - Gear for localization of effect of explosive mechanisms with additional protection of lower circuit - Google Patents

Abstract

FIELD: rendering explosion- risky objects harmless. SUBSTANCE: gear for localization of effect of explosive mechanisms has one or more vessels made of elastic material and filled with dispersing agent with formation of space open from lower side. Localized explosive mechanism placed on bearing surface is put into this space. Flat ring made of material that does not form dangerous fragments after explosion is located inside space on bearing surface and has width equal to 5.0-30.0% of diameter of space and is attached over entire perimeter of contact to lower part of gear contacting bearing surface. EFFECT: effective protection of people and structures against high-explosive, thermal and fragmentation effect after operation of explosive mechanisms. 1 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 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 obstacle insurmountable 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 42 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 destructive 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 V 39/00, F 42 V 33/00, published on 01/20/99. The device comprises one or more containers with a shell made of an elastic material filled with a non-combustible liquid (dispersant) to form a cavity open from the lower side, and a handle for delivery and installation. An anti-splinter screen 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 compression, dispersion, and expansion of liquid droplets.

 The disadvantage of the prototype is that the lower part of the device and the anti-fragmentation screen is raised due to the pressure caused by the explosion, and between the device and the supporting surface can penetrate excess pressure and fragments that fly apart after the explosion in directions close to horizontal (creeping fragments).

 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 creeping fragments between it and the supporting surface.

 This goal is achieved by the fact that a flat ring made of a material that does not create dangerous fragments during the explosion, which is located inside the cavity on the supporting surface and has a width of 5 ... 30, is attached to the lower part of the device in contact with the supporting surface along the entire perimeter of contact % of the diameter of the cavity. The ring is located inside the cavity on the supporting surface so that the overpressure acting perpendicular to the surface at each point has an effect P directed downward on this element located on the supporting surface. Thus, the ring is pressed against the supporting surface, and it prevents the lifting of the device and the penetration of the shock wave (gauge pressure), as well as fragments, between the present device and the supporting surface. The effect of P is greater, the greater the width of the ring, therefore, this width should not be less than 5% of the diameter of the cavity. Too large a ring width leads to the fact that the ring when installing the localization device touches the explosive mechanism, which can lead to its operation, therefore, the ring width is impractical to perform more than 30% of the diameter of the cavity.

 The design of the device for localizing the effects of explosive mechanisms 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 is the handle; 2 - an explosive device placed in a suitcase (a suspicious item), 3 - a working cavity of the device, 4 - a container of elastic material (rubber), 5 - dispersant, 6 - a fragmentation shielding screen made of Kevlar fabric, 7 - a flat ring made of material , which does not create dangerous fragments (rubber) during the explosion, 8 - supporting surface.

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

 The device for localizing the effects of explosive mechanisms using the handle 1 is installed on the detected suspicious object 2 so that the cavity 3 made in the lower part of the device completely separates 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 shell 4, dispersant 5 and the anti-splinter screen 6, while the flat ring 7 prevents the device from being lifted, which prevents the penetration of the shock wave and creeping fragments between the device and the supporting surface.

 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 (1)

 A device for localizing the effects of explosive mechanisms, containing one or more containers filled with a dispersant, made of elastic material with the formation of a cavity open on the lower side, into which a localized explosive mechanism located on the supporting surface is placed, characterized in that to the lower part of the device in contact with the supporting the surface, around the entire perimeter of the contact, a flat ring is mounted made of a material that does not create dangerous fragments during the explosion, which is located in utri cavity on the support surface and has a width of 5 - 30% of the cavity diameter.