FIELD: demolition works.
SUBSTANCE: initiation device contains a metal housing with two coaxial blind channels divided by indestructible barrier. In one channel the pyrotechnical high-calorific preheating charge, and in another one - a pyrotechnical priming charge is located. The preheating and primer charges are made from pyrotechnical compositions forming solid slags after burning.
EFFECT: improvement of device reliability at inertial actions.
3 cl, 1 dwg
The invention relates to the field of pyrotechnics and can be used in the construction of the igniter device for initiating combustion of various substances in the sealed volume, in particular due to inertia effects in the process of operation of the device.
The known device for initiating combustion in a sealed volume, based on the introduction in pressurized closed volume of inputs of the bridge filament (Auxiliary systems of rocket and space technology. - M.: Mir, 1970, p. 100-102) for sealing the volume after initiation due to melting of the wall of the firing channel (U.S. Patent No. 3713392, CL F42B 3/10, 1973), on the crumpling of the insert overlapping the through holes (U.S. Patent No. 3789764, CL F42B 3/10, 1974), on the transmission of the initiating impulse of the shock wave through a sealing wall (French Patent No. 2569265, CL F42B 3/10, 1986; FRG Patent No. 3629371, CL F42C 9/10, 1987; RF Patent №2210722, CL F42B 3/10, publ. 20.08.2003).
The introduction of the inputs of the bridge filament in a closed volume is technologically complicated construction. The lack of overlap of the through holes is the low reliability seal after activation. The disadvantages of the transmission of the initiating impulse of the shock wave generated in the sealing barrier of the charge BB, include the use of explosives, which increases �claim to safety in the manufacture and operation of the igniters.
The closest technical solution is a device for iniciirovanie (Patent RF №2408834, CL F42B 3/10, publ. 10.01.2009). In this arrangement, two coaxial channel separated by a barrier. In one channel is warming the battery and the other of the igniter charge. The igniter charge is divided into two elements, which is set between the transmitting charge from malahitovaja pyrotechnic composition that forms during combustion of the solid products of combustion. This device has small dimensions and mass characteristics and the time of transmission of the initiating impulse of less than 100 MS, provides a reliable seal after activation of the device and secure in the manufacture and operate.
A disadvantage of the known device is complicated, the manufacturing technology of the device, when the equipment is used in different pyrotechnic compositions for warming, the igniter and the transfer charge. In addition, the use of three different compositions in the device reduces the reliability of his work.
The problem solved by the present invention is to improve the reliability of the device, especially when inertial effects and simplify the technology of manufacturing the device.
When using the invention achieves the following technical result:
- improving the reliability of the mouth�STS, including inertial effects;
- simplify the technology of manufacturing the device;
- maintaining seal after actuation of the device.
For solving the mentioned problem and achieve the technical result is proposed a device consisting of a arranged in the housing two coaxial channels separated by a barrier, one of which is a warming charge, and the other of the igniter charge, which according to the invention a warming and igniting the charges made of pyrotechnic composition that forms during combustion of solid waste products.
Warming and igniter charges can be made of a pyrotechnic composition or pyrotechnic compositions.
The inventive device is intended for initiating a pyrotechnic charge, the combustion of which can form liquid high-temperature combustion products. When exposed to an obstacle, especially when the inertial loads of the liquid products of combustion are subjected to additional heat, which reduces the strength characteristics of the obstacles and can lead to depressurization of the device. The use of the igniter charge of pyrotechnic composition that forms during combustion of solid combustion products, allows you to block access to indestructible preg�Ada liquid high temperature combustion products to ignite the charge and eliminate thermal shock, leading to the formation in the indestructible barrier of microcracks. This saves the efficiency of the device due to inertia effects. The use of warming up charge of pyrotechnic composition that forms during combustion of the solid products of combustion, increases the reliability of the proposed device due to the contact of the solid products of combustion with an obstacle due to inertia effects. The use of two pyrotechnic compositions, of which warm-up and igniter charges (withdrawal from the transmitting charge), increases the reliability of the claimed device, simplifies the technology of manufacturing and testing. In the case of performing warm-up and igniter charges from one pyrotechnic composition even more increases the reliability of the device and reduce the cost of its manufacture.
Diagram of the device for initiating shown in Fig.1.
In the housing 1 (Fig.1) arranged in series on the same axis channel 2 under warming charge 3, which forms during combustion of the solid products of combustion, an indestructible barrier 4 and channel 5 under the igniter charge 6, also forming during combustion of solid products of combustion. Thus indestructible barrier 4 may be of any shape (cylindrical, truncated-conical and hemispherical). Solid Pro�UKTI combustion formed during the combustion of the igniter charge 6, provide inertial impact protection barriers 4 against the penetration of liquid products of combustion generated in the combustion ignites this unit charges.
The device operates as follows. When applying an initiating pulse to warming charge 3 he is burned and the combustion products due to the contact with the barrier 4 is heated it to the temperature of ignition of the igniter charge 6, causing it to combust, thus ensuring the transmission of the firing pulse through an indestructible barrier 4. During the combustion of the igniter charge 6 are formed of solid combustion products that protect an indestructible barrier inertial effects of the liquid products of combustion generated in the combustion ignites this unit charges.
An example of a specific implementation may be the device in which the channel 2 under warming charge 3 curb warming pyrotechnic composition based on KClO4, Mo and B with a density of 4.4 g/cm3height of 4 mm. Deaf cylindrical channel 5 under the igniter charge 6 curb the same pyrotechnic composition based on KClO4, Mo and B with a density of 5.8 g/cm3, height of 10 mm (the density of the igniter charge was increased to reduce temperature e�on ignition). The thickness of indestructible steel barrier 4 is 1.5 mm.
In the second example of embodiment of the device in the channel 2 under warming charge 3 was also curb warming pyrotechnic composition based on KClO4, Mo and B with a density of 4.4 g/cm3height of 4 mm. Into the hollow cylindrical channel 5 under the igniter charge 6 was equipped with a pyrotechnic composition based on KClO4, Mo and MoS2with a density of 6.5 g/cm3, height of 10 mm. Thickness indestructible steel barrier 4 was also 1.5 mm.
In both examples, used pyrotechnic compositions to form solid products of combustion.
The tests were conducted under the influence of inertial overloads. The igniter charge 6 is ignited pyrotechnic composition based on CuO and Al, having liquid products of combustion to visually check the effectiveness of the protection obstacles combustion products vosplamenenie charge 6.
The efficiency of this device two specific accomplishments inertial effects (over 10 g) in the direction away from the igniter charge 6 to the barrier 4 is confirmed experimentally. In experiments it was found that in the channel 5 of the igniter charge 6 there is no combustion of the pyrotechnic composition based on CuO and Al. It is possible to avoid thermal shock on the indestructible barrier with 4 sides� channel 5, leading to the formation of microcracks in the barrier 4 and its overheating, which significantly reduces the strength characteristics of the device and may cause depressurization.
The use of the proposed device provides for the initiation compared with the known devices the following advantages:
- improving the reliability of the device when the inertial effects;
- simplify the technology of manufacturing the device;
- maintaining seal after actuation of the device.
1. The device for initiating, comprising a metal housing with two coaxial blind channels separated by an indestructible barrier in one channel is a pyrotechnic high-calorie warming charge, and the other pyrotechnic igniter charge, characterized in that warming and igniting the charges made of pyrotechnic compositions that form during combustion of solid waste products.
2. The device according to claim 1, characterized in that warming and igniting the charges is made of a pyrotechnic composition.
3. The device according to claim 1, characterized in that warming and igniting the charges made of different pyrotechnic compositions.
FIELD: blasting operations.
SUBSTANCE: invention relates to the field of explosion engineering, containing discrete detonation wave generator (DDWG), and can be used in development of military ammunition, explosive devices for use in economic activities (engineering charges, mining operations, machine engineering, etc.) and scientific -research activities. In the explosive device containing the main explosive charge, DDWG in the form of a matrix of inert material with a network of channels and openings with a general receiving area filled with explosive and coated with a shell, the initiation source, initiating a general receiving area, DDWG comprises a layer of explosive at the side of the main charge. The shell made of heat resistant material comprises through openings covering the groups of openings in the matrix, and drainage channels connecting the openings located in a zone of pressing of DDWG by the elements of housing with a cavity of the structure having connection with the external environment. At that the following conditions are fulfilled: Q<6 g, Q/Sc<2.7 g/mm2, wherein Q is explosive weight in the matrix, attributable to one opening in the shell, Q/Sc is cross-sectional area of the drainage channel. The shell of the explosive device is made of foam-polycarbonate having density of 0.7-0.8 g/cm3.
EFFECT: increase in fire and explosion safety of explosive devices with DDWG due to removal of gaseous decomposition products of explosives beyond DDWG.
2 cl, 1 dwg
FIELD: blasting operations.
SUBSTANCE: invention relates to detonating cords and can be used for accurate in time transfer of detonation to the explosive charges in devices of spherical implosion of explosion. The detonating tube comprises a shell and a charge of high explosive, at that the shell consists of two layers, namely the inner thin-walled layer of a polymer with a melting temperature higher than the melting temperature of the outer thick-walled layer. On the inner surface of the outer layer there are longitudinal, along the axis of the tube of the rib, inclined at an angle to the radius of the tube and the thickness of the ribs less than the wall thickness of the inner layer of the shell. There is vacuum between the layers.
EFFECT: solution provides transmission of detonation from the primary detonator to the secondary detonator, without causing predetonation of the explosive.
FIELD: weapons and ammunition.
SUBSTANCE: invention relates to detonation systems intended for shaping of an explosion wave of the specified shape in an explosive charge or an explosive compound (EC) of decreased sensitivity. A detonation logic device for shaping of an explosion shape includes a housing, in which the primary explosive charge and a matrix from inert material with a network of channels and holes filled with an explosive are arranged. The network of channels has an initiation point; between the matrix and the primary explosive charge there introduced is the second matrix from inert material with a network of channels and holes filled with an explosive, which has its initiation point on one side and initiation channels on the opposite side. Configuration of the network of channels of the second matrix is similar to that of the network of channels of the first matrix and offset relative to it so that a projection of each end point of the network of channels of the first matrix does not coincide with projections of channels of the second matrix. In the first matrix there is a through hole filled with an explosive for use of the initiation point of the second matrix; the second matrix contains through holes filled with an explosive, which coincide with holes from the end points of the network of channels of the first matrix so that the corresponding end points of networks of channels of both matrixes are connected in pairs with initiation channels.
EFFECT: improving actuation reliability.
FIELD: weapons and ammunition.
SUBSTANCE: explosive device includes a housing with a cover plate, in which the primary charge of an explosive is arranged, an initiating system including an inlet connector and a cartridge, which are connected via an energy transfer circuit, and a detonator installed in the cartridge. The detonator is arranged so that its detonation outlet is directed to the side that is opposite to the primary charge of the explosive and connected to it with a detonation channel arranged in a removable protective housing. The cover plate has a through hole in which an inlet connector locked with a plug is installed. The protective housing can be fixed in the primary charge of the explosive or on the cover plate. The primary charge of the explosive can be of a multilayered type, and its outer layer is made in the form of a matrix from inert material with a network of channels and holes filled with an explosive. The detonation channel can be branched. The cartridge with the detonator is arranged on the primary charge of the explosive or in the matrix from inert material with a network of channels and holes filled with the explosive.
EFFECT: increasing assembly safety of an explosive device after installation of a detonator onto a charge prior to installation of a special protective element or a cover plate of the housing.
7 cl, 3 dwg
SUBSTANCE: electric detonating system comprises circuits of electric detonators, each of them consisting of two in series electric detonators and distinguished by the fact that each electric detonator includes external electrode and internal electrode, at that in each circuit of electric detonators their inner electrodes are interconnected and insulated while external electrodes of the first electric detonators in each circuit are jointed and form the first input for connection to power supply source, external electrodes of the second electric detonators in each circuit are jointed and form the second input for connection to power supply source, at that the first and second outputs for connection to power supply source are shunted.
EFFECT: improving safety of use.
3 cl, 2 dwg
FIELD: blasting operations.
SUBSTANCE: explosive device comprises a main charge of the explosive agent, a matrix of inert material with a network of channels and holes filled with the explosive agent, the housing elements, the source of initiation, the initiating common receiving section. Above the matrix from the side of the channel the collector is mounted, repeating the shape of the matrix surface, made in the form of a mesh heat-resistant material that provides an outflow of thermal decomposition products of the explosive agent through the structural gaps of the device housing to the external environment. The matrix of inert material has through holes not filled with explosive agent.
EFFECT: increase in fire- and explosion safety.
FIELD: blasting operations.
SUBSTANCE: formation device of blast wave in an explosive charge relates to blasting operations. The device includes the primary explosive charge and a matrix with detonation interconnections. The matrix represents channels filled with an explosive and having a common inlet section; sections located along the matrix surface and end sections located at an angle to the matrix surface. Sections located along the matrix surface have a cross section in the form of an isosceles trapezoid, the smaller base of which is directed to the side of the main explosive charge. Trapezoid inner angle α between the larger base and the lateral side is chosen based on the following: arctg l/t ≤ α ≤ arctg l/tcr, where l - distance between the channels located along the matrix surface and end sections; t - matrix thickness; tcr - critical thickness of explosive channels.
EFFECT: achieving improvement of stable activation of detonation interconnection elements.
FIELD: blasting operations.
SUBSTANCE: in the first embodiment of the detonation triode, consisting of the detonation channel with two inputs and the partition adjacent to it, separating the channel from the triggered explosive charge, the partition is a separator made in the form of stick of the explosive composition of less sensitivity than the explosive composition of the channel, with dimensions insufficient to trigger the stick at unilateral passage of the detonation along the channel within the size of the stick. In the second embodiment of the detonation triode, consisting of the detonation channel with two inputs and the partition adjacent to it separating the channel from the triggered explosive charge, the partition is a separator made in the form of a package of perpendicular to the axis of the channel alternating plates of the explosive composition and of the inert material. The thickness of each plate of the explosive composition is insufficient to trigger it at unilateral passage of the detonation along the channel, and the thickness of each inert plate is sufficient to trigger detonation in adjacent plates of the explosive composition in collision in front of its end of the detonation waves coming from the inputs of the channel.
EFFECT: increase in reliability, reduction of time of transmission of detonation, increase in accuracy of the calculation of time of the detonation triode through the use of a single detonation physico-chemical process.
4 cl, 2 dwg
FIELD: information technology.
SUBSTANCE: method includes forming an element from an explosive on the dielectric base of an electrical circuit which opens access to the data medium, which is equipped with a system of elements for electrical control of access to the data medium. When the control system is triggered, said element made of an explosive is detonated. The element made of an explosive is formed as a nanolayer of an explosive, placed inside a microcumulative charge, which is electrically connected to a bridge electric detonator, also formed on the base of the electrical circuit. The material of the element made of an explosive used is a secondary explosive composition, e.g. TEN, which is obtained using a thermal-vacuum method by spraying on a profiled aluminium substrate made on a dielectric base.
EFFECT: providing reliable prevention of access to a data medium through emergency destruction of memory chips while preserving integrity of the electronic unit containing the data medium owing to low explosion power of the explosive.
FIELD: blasting operations.
SUBSTANCE: explosive device comprises the main explosive charge, the detonation wave generator in the form of a matrix of inert material with a network of channels and openings with the common receiving part, filled explosive charges and coated, the source of initiation initiating the common receiving part. The matrix of the detonation wave generator is made of open-porous heat-resistant material having the property of sorption of explosive charge melt and free removal of gaseous products of decomposition of explosive charges. The matrix of detonation wave generator can be made of open-porous technical carbon material with nanopores, or of open-porous alumina with the porosity of 20 to 50%. The matrix material comprises explosive reagent chemically active reactive with respect to the melt and/or gaseous products of decomposition of explosive charge capable of reducing the rate of decomposition of explosive charges and its thermal effect.
EFFECT: increase in fire and explosion safety of explosive devices with detonation wave generator; preventing unwanted distribution of melt of explosive charges beyond the explosive device; providing thermal decomposition of explosive charges without acceleration, resulting in a flash, with reduction of the gaseous products of decomposition beyond the detonation wave generator.
7 cl, 4 dwg
FIELD: blasting operation.
SUBSTANCE: in the method for electric bursting of n extended explosive charge along the line of its layout conversion of the electric energy partially to the thermal and kinetic energy is realized with the aid of two parallel wires connected to a high-voltage source so that one end of the first wire would serve as a positive terminal, and the opposite end of the second wire would serve as a negative terminal of two wires moving toward each other producing eventually a shock-wave initiation of the primary charge of explosive material along the line of their layout providing a good synchronism of formation of the detonation front in an extended explosive charge.
EFFECT: reduced time difference down to 1µs of blasting of an extended explosive charge at lengths within 0.1 to 0.5 m.
SUBSTANCE: an initiating compound (5) for excitation of detonation of the main charge (2) is located in the detonator (1). The initiating compound contains the inflammable initiating charge (9,10), which at inflammation gives off gaseous combustion products, with the aid of which detonation of the main charge is excited. The initiating compound contains a compression agent (7), which is displaced under the action of the mentioned gaseous combustion products in the direction to the main charge for its compression. The invention also concerns the method for inflammation of the compressed main charge in the detonator, at which the main charge is additionally compressed to an increased density during the inflammation phase. Besides, the invention concerns the detonator provided with the main charge, which has an increased density at the instant of detonation.
EFFECT: enhanced shock wave of the detonator.
16 cl, 9 dwg
SUBSTANCE: invention relates to filling-mediated manufacture of explosives and comprises filling casing with solid phase: trotyl in the form of scales, granules, and uneven pieces, evacuation of casing, and pouring molted trotyl, melt and/or solid phase being supplemented by pentaerythritol tetranitrate in amounts within the range of its natural solubility in trotyl.
EFFECT: achieved reliable susceptibility of trotyl charges without considerable increase in sensitivity to mechanical action.
FIELD: discrete transducers on detonation logical elements for remote authorized blast of explosive charges.
SUBSTANCE: the blasting logical circuit has a board with two inputs and one output interconnected by detonating rods forming a longer and shorter branches between the first input and the output with joining-on of the second input to the shorter branch. Actuating elements disturbing the detonation coupling are installed at the joints of the longer and shorter branches and the second input. The detonating rods are positioned on both sides of the board, and through holes are made in the board, the actuating elements disturbing the detonation coupling are made in the form of a receiving charge and an inert obstacle adjoining it and located on the side of the destructed detonating rod for motion under the action of the blast products of the receiving charge, the detonation ducts and the receiving charge are made of precipitated explosive.
EFFECT: reduced dimensional and mass characteristics.
2 cl, 4 dwg, 1 tbl, 1 ex
FIELD: initiation means, in particular, ignition means of pyrotechnical compounds and powders, in pyrotechnical or powder pressure sources used in industry.
SUBSTANCE: the ignition device has two pyrotechnical charges - an initiating and an igniting ones, located in the body coaxially through a partition in which holes are made for transmission of burning. The initiating charge is installed in contact with the partition, and the igniting charge is installed with a clearance to the partition. Both pyrotechnical compounds are thermoresistant and large calorie compounds. The initiating charge is ignited either by heating of the bridge by electric current, or by a fire pulse. The combustion products of the initiating pyrotechnical compound are in the gas phase, and those of the ignition pyrotechnical compound are in the gas and solid phases.
EFFECT: enhanced thermal stability (approx. 300°C), reliability of initiation of the working charge, leak-proofness, simplicity.
FIELD: blast equipment, applicable in blast breakers of pulse current, magnetocumulative generators with an axial initiation and in other devices, where the electric strength of the device for formation of blast wave is required.
SUBSTANCE: the device has an initiation source, explosive charge with branches and the main explosive charge. The charge with branches is made in the form of disks uniformly installed in the axial length of the main charge, alternating with dielectric, the distance between the disks is selected not exceeding value where - time deference of the outlet of the detonation wave to the external surface of the main charge; D - speed of detonation wave of the main charge; - wall thickness of the main charge, the disks from the explosive charge are connected in pairs by rods from explosive charge, which in turn are interconnected by radial and longitudinal cross-pieces from explosive charge and positioned on one side from the charge axis, and a passage with explosive charge connected to the cross-piece and brought out to the initiation source located on the charge end face is positioned on the other side. The quantity of connections of disks alternating with dielectric may be changed depending on the length of the main explosive charge and maintenance of distance S between the disks. The device is made with an adjustable delay of operation.
EFFECT: provided simultaneous blasting of the main cylindrical charge with initiation in its axis with an enhanced electric strength.
2 cl, 2 dwg
FIELD: methods for sealing of initiation means of various purpose.
SUBSTANCE: the method consists in the use for sealing of initiation means of an expanding low-gas composition, whose condensed combustion products occupy a volume larger than the volume of the source components. Sealing of the initiation means is accomplished by location of the expanding low-gas-composition on the surface to be sealed so that it fills the holes or joints between the surfaces and then it is ignited. At combustion a slag plug is formed in the holes or joints between the surfaces that reliably seals the surface.
EFFECT: enhanced stability of the product output characteristics in pressure and time of operation with provision of its sealing after operation.
2 cl, 1 dwg, 3 tbl, 1 ex
FIELD: blasting operations.
SUBSTANCE: the purpose of the invention is creation of an effective and trusty firing method with a controlled time delay. The substance of the invention consists that at initiation of a surface network a time delay of initiation of explosive charges between the adjoining wells define from the following ratio T<L/V, where T is a time delay, L is a line of the least resistance from the nearest blasted well to the initiated well, V - a breaking wave velocity (it defines a physical-mechanical state of the blasted medium), and initiation of the wells blasting charges is conducted by a system of a non-electric blasting with a null delay, at that for obtaining a converging detonation of the explosive charge the length of waveguides of the system of the non-electric blasting is regulated. For upgrading accuracy of initiation of a surface network it is possible to use electrical detonators with electronic delay (EDED).
EFFECT: the invention ensures an effective and trusty firing method with a controlled time delay.
2 cl, 1 dwg, 1 ex
FIELD: fuses actuated by a preset mechanical force, applicable in development of the design of a detonating device of an impact mechanical fuse.
SUBSTANCE: the detonating device of a mechanical fuse has a body with a primer detonator, lead charge and a detonator made of a high explosive positioned in succession in it, the deformable component of inert material in the form of a disk and installed between the cylindrical striker and the primer detonator, which is linked with the lead charge through the axial duct of the body, the body is realized in the form of a bush and a sleeve fastened by a nut, whose end face surface is positioned above the end face surface of the striker, and radial holes filled with a low-melting alloy are made in the zone of a low-melting alloy are made in the zone of location of the lead charge, for fastening to the mechanical fuse made on the outer surface of the nut are a thread and longitudinal ducts, as well as radial holes in the upper and lower parts of the nut, besides, the cylindrical striker is hermetically fastened in the nut cavity with the aid of a heat-resistant adhesive, and a union nut is used for fixation of the detonator, the primer detonator has dimensions of fractions of heat-resistant high explosive of about 0.2 mm.
EFFECT: enhanced safety of perforator operation in extreme conditions for provision of a reliable transfer of the detonation impulse and guaranteed failure of detonation due to wetting and washing-away of explosive and provision of failure of operation of the mechanical fuse.
FIELD: pyrotechnics, structures of igniters.
SUBSTANCE: ignition and initiating charges made of pyrotechnical compositions are installed in the body in alignment through a partition. The initiating charge is made of a pyrotechnical composition containing no gas, forming solid combustion products in the form of two elements connected by a duct. The cross-section area of the initiating charge element engageable with the partition is commensurable with the cross-section area of the ignition charge. The partition may be made in the form of a plate, both massive and with peripheral holes or slots. The element of the initiating charge engageable with the partition and the connecting duct may be cylinder=shaped with a correlation of dimensions d=(0.1-0.3)*D and d/L=0.2-1.0, where: d - the diameter of the connecting duct; D - the diameter of the initiation charge element engageable with the partition; L - the length of the connecting duct.
EFFECT: the actuation time makes up approx.0.01s; possibility of device cut-off from the environment; possibility of adjustment of the actuation time.
4 cl, 1 dwg