Electric detonating system
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
The invention relates to the field of blasting, in particular to electrical devices designed for simultaneous initiation of several explosive substance or multiple points in a single charge.
Most similar in essential characteristics is a parallel-serial electrical explosive network (centuries Matveichuk, B. N., Churilov, Blasting: a Training manual. - Moscow: Academic project, 2002. - 384 C.) containing parallel connected to the power supply chain of series-connected electric detonators.
The disadvantage of this device is the lack of protection from accidental contact with electricity from the outside to the electrodes of electric detonators during the period of preparation for the explosion, if the network is grounded intentionally or accidentally (Gruevski M. M. Handbook of electrical blasting explosive charge. Ed. 2nd, Rev. and ext. M: Rendezvous-AM - 2000. - 448 C.). Protective isolation of both electrodes of the detonators is not always possible within a fairly short period of time. It is not excluded accidental electricity to any of the electrodes of electric detonators so that electric current will flow in parallel electric detonators of the same chain. If the chain two detonator, the current will be distributed between n the mi spread around evenly and the amount of current, flowing through each detonator chain will be approximately half of the current supply. At a certain threshold current values can occur premature explosion of both electric detonators and the explosion of the charges (charge).
A known electric detonators or explosives coaxial configuration, with internal and external electrodes (patent RF №2104467; IPC F42B 3/12, publ. in bull. No. 4 from 10.02.1998,, RF patent №2179699; IPC F42B 3/12, F42C 19/12, publ. in bull. №5 dated 20.02.2002 year). The external electrode is simultaneously the capacity for explosives, so they detonators have smaller dimensions and high manufacturability.
The task, which is aimed by the invention, consists in the development of technical measures to reduce the risk and protect electrical explosive network with two installed electric detonators coaxial configuration in each of the parallel chains from a premature explosion of electric detonators accidental release electricity from outside on any of the open current carrying parts of the network, for example, to open the electrode of any of the detonator, if the network is intentionally or accidentally grounded.
The technical result is to increase the safe use of electrical explosive network.
This technology is static result is achieved by in electric blast network containing chain electric detonators, each of which consists of two series-connected electric detonators, what's new is that each detonator includes external and internal electrodes, each chain electric detonators their internal electrodes are interconnected and isolated, and the external electrodes of the first electric detonators each chain are combined and the first output for connection to a power source, the external electrodes of the second electric detonators each chain are combined and a second output for connection to a power source, and first and second leads for connection to a power source shunted by.
To isolate the detonator can be applied cartridge comprising a conductive casing and the inner electrode, while the conductive Chuck body is electrically connected with the external electrode of the electric detonator, and the internal electrode with the inner electrode of the electric detonator.
Connection and external isolation of the internal electrodes of electric detonators each chain allows you to provide multiple decrease the amount of current flowing through the electric detonators chain accidental release electricity at one of the open electrodes of the network, significantly reducing ve is aatest premature explosion of electric detonators and charges (charge), which leads to safer use.
Repeated reduction in the magnitude of the current is due to the fact that a large part of electricity, accidentally falling on open leads for connection of the power source or the exposed electrodes of the electric detonators, flows to the ground through a shunt area of the conductor chain, parallel plot with electric detonators. This is because the ratio of the values of the currents flowing through the section of chain with electric detonators and parallel shunt portion of the chain is inversely proportional to the ratio of the electrical resistances of the circuit of these sites. The greater the resistance of the section of chain with electric detonators compared with the resistance of the shunt plot in it, the less current will flow through the electric detonators. Usually the resistance of electric detonators higher resistance supply conductors. Therefore, the resistance of the plot with electric detonators will be several times higher than the resistance of the shunt site. Thus, significantly increases the permissible value of the random current flowing from the outside of the chain of the electric detonators, not causing an explosion. Electric blast network is more secure to use.
The electrical connection of the conductive body and the outer electrode is electrocatheter carry out pin locking device which additionally blocks the detonator in the cartridge to prevent access to the inner electrode of the electric detonator.
The use of electric detonators coaxial configuration, i.e. including external and internal electrodes, is not new in itself, but in combination with other essential features is new and allows to achieve the stated technical result.
In Fig.1 shows an embodiment of the circuit of explosive network of Fig.2 is a diagram of the design of the cartridge with a detonator and pin locking device.
Electric blast network (Fig.1) contains three parallel chains of electric detonators. All chain electric detonators are made identical.
Each chain electric detonators (Fig.1) contains the first 1 and second 2 electric detonators, insulators 3, 4, the conductors 5, 6, 7.
The first 1 and second 2 electric detonators contain explosive 8, 9, the external electrodes 10, 11 and the internal electrodes 12, 13.
The internal electrodes 12, 13 electric detonators 1, 2 are connected by a conductor 5 and closed by the insulators 3, 4. External electrodes 10 of the first electric detonators 1 of each chain are connected with the conductors 6 and are the first 14 output for connection to a power source (shown in Fig.1 is not shown). The external electrodes 11 of the second electrodein the tori 2 of each chain are connected with the conductors 7 and are 15 second output for connection to a power source (shown in Fig.1 is not shown). The first 14 and second 15 conclusions bridged between a shunt 16 until the connection with the power source and bringing electric blast network is ready to explode.
The second conclusion 15 the grounded conductor 17. All conductors are made isolated.
Possible options random electricity shows zigzag arrows 18, 19 and 20.
As insulators 3, 4 is used cartridges (Fig.2), each of which contains a conductive housing 21, the inner electrode 22, an insulating sleeve 23, the contact locking mechanism 24.
Pin locking device 24 is made in the form of a collet electrode and mounted in the conductive housing 21. Elastic lamellae collet electrode 24 in contact with the external electrode is installed in the Chuck of the electric detonator 25 and abuts the structural element 26 made on the outer surface of the detonator in the form of grooves, groove (grooves) or protrusions (protrusions). This prevents the removal of a detonator of the cartridge. The connection of the cartridge with other network elements is carried out by conductors 27.
Electric blast network works as follows.
For the period prior to connection to the power source (Fig.1 not shown) and bringing electric blast network is ready to explode findings 15 and 16 connected to the I power source is bridged between a shunt 16. Therefore, in case of accidental contact with electricity, 18, 19, 20 from the outside on one of the outdoor live parts of electrical explosive network, for example, to the conclusions of 15 and 16, or to the electrodes 10 or 11 one of the electric detonators 1, 2 one of the chains, a large part of the electricity will flow through the conductor 17 to the ground bypassing the electric detonators.
After you install the cartridge (Fig.2) the detonator 25 protection of the internal electrode of the electric detonator and the internal electrode 22 of the cartridge from access and the occasional electricity guaranteed locked in locking collet electrode 24.
To protect other live parts of electrical explosive network from accidental contact with electricity from the outside also apply locking device. For example, the electrodes 10 and 11 with the shunt 16 can be placed in the connector (USSR author's certificate No. 938342; IPC H01R 17/00, publ. in bull. No. 23 of 23.06.1982,), whose input is protected by a flap locking type.
1. Electric blast network containing chain electric detonators, each of which consists of two series-connected electric detonators, characterized in that each electric detonator includes external and internal electrodes, each chain electric detonators their internal electrodes are interconnected and isolated, and the external electrodes of the first electrode is of Natarov each chain are combined and the first output for connection to a power source, external electrodes of the second electric detonators each chain are combined and a second output for connection to a power source, and first and second leads for connection to a power source shunted by.
2. Electric blast network p. 1, wherein each detonator has additionally introduced in the cartridge comprising a conductive casing and the inner electrode, while the conductive Chuck body is electrically connected with the external electrode of the electric detonator, and the internal electrode with the inner electrode of the electric detonator.
3. Electric blast network p. 2, characterized in that the conductive Chuck body contains contact locking mechanism.
FIELD: weapons and ammunition.
SUBSTANCE: invention relates to the field of armaments. The bursting-type ammunition comprises a housing with explosive, a nose fuse, comprising a housing, which comprises the sensor of generating the command to disrupt, the power source, the electronic unit, the detonator, the fuse safety and arming mechanism, comprising a safety valve, a transfer charge, an electric detonator, in the housing of which an explosive charge is mounted, as well as an initiator coupled to the electronic unit. The explosive charge of the electric detonator consists of two samples: outlet, made from secondary high density explosive, and initiating sample, made of explosive diperchlorate (5 nitrotetrasolato)pentaamincobalt (III), conjugated with the initiator, which is used as a semiconductor element energy conversion element. Height of the initiating sample along the longitudinal axis of the charge is made following the condition of providing transition of the initiating sample combustion in the detonation when triggering of the semiconductor energy conversion element.
EFFECT: invention provides high reliability of combat operational and improved safety in the service operation.
FIELD: weapons and ammunition.
SUBSTANCE: invention relates to the field of armaments, in particular to fuses for missile projectiles, mainly of valley fire systems. The fuse for missile projectiles comprises an inertial contactor, a power supply, a sensor of generation of command for demolition, the electronic unit, the detonator, the fuse safety and arming mechanism comprising a safety valve, an electric detonator, in the housing of which the explosive charge and the initiator are mounted, connected to the electronic unit. The explosive charge comprises two samples: outlet, made of secondary high density explosive, and the initiating sample made of explosive diperchlorate (5-nitrotetrasolato)pentaamincobalt (III), connected with the initiator, which is used as a semiconductor energy conversion element. Height of the initiating sample along the longitudinal axis of the charge is made following the condition of providing the transition of combustion of the initiating sample into the detonation when triggering of the semiconductor energy conversion element.
EFFECT: invention provides high reliability of combat use and improved safety in the service operation.
2 cl, 4 dwg
SUBSTANCE: electrical detonator has a casing containing an explosive charge in the form of weighed portions: an output charge made of a high-density secondary explosive and a triggering charge made of low-density deflagration explosive with an explosive jumper mounted on a plate with current leads. The trigger is the form of a semiconductor energy-converting device with stabilitrons.
EFFECT: improved performance, specifically efficiency, reliability and triggering speed of the electrical detonator, safer triggering of the electrical detonator from a static electric discharge.
2 cl, 2 dwg
FIELD: electrical engineering.
SUBSTANCE: independent energy-containing power source of an electronic fuse for small-calibre ammunition rounds is made as a voltaic battery comprising of a spring-actuated glass bulb filled with electrolyte, place inside a permeable bushing adjoining to the coaxial block of bipolar plate electrodes. At that the block is placed between negative and positive electrodes equipped with terminals. Moreover the bulb is capable of longitudinal displacement in respect to a firing pin at the case bottom and closed with a cap-type housing which is fixed by a flange inside the case and is rested on flat end of the bushing and block of electrodes. In permeable bushing there are reach-through holes in axial alignment with gaps between electrodes in the block of electrodes; longitudinal vanes are distributed alongside the inner perimeter. At that bipolar electrodes have ducts and reach-through holes in the permeable bushing are made alternatively in the shape of longitudinal slots at the height of the block of electrodes.
EFFECT: operating speed of the current source at multiple reduction of the warm-up period for electrolytic battery due to forced circulation of electrolyte inside the perforated bushing with its distributed delivery to the voltaic battery.
2 cl, 2 dwg
SUBSTANCE: method to manufacture electromechanical initiators includes formation of bridges simultaneously with electrodes on a substrate by application of a conducting coating, connection of a substrate with a dielectric film, and then with a dielectric plate, formation of holes in a plate, which correspond to location of bridges on the substrate, formation of electric contacts of initiators and subsequent separation of a produced joint into separate initiators or groups of initiators. Formation of holes in a dielectric plate and formation of electric contacts of initiators is carried out until a plate, a film and a substrate are connected. Formation of electric contacts of an initiator is carried out by cutting slots in a film and in a dielectric plate. The dielectric film is a polyimide film with a double-sided fluoroplastic coating. Coating thickness is 4-5 times less than the film thickness. Connection of the film, substrate and plate with holes is carried out by means of thermocompression welding. Connection of the substrate with the dielectric film is carried out under the pressure of (0.3±0.05) kgf/cm2, and with the dielectric plate - under pressure of (0.03±0.005) kgf/cm2.
EFFECT: higher manufacturability of initiators making.
4 cl, 1 dwg
SUBSTANCE: electric detonator includes sleeve 1 with insert 2 installed in it; the above insert contains an explosive charge made in the form of outlet charge 3 of secondary explosive of high density, intermediate charge 4 of deflagration explosive of low density and initiating charge 5 of deflagration explosive of high density, which is interconnected with explosive bridge 7 installed on sealing strip 6 with current terminals 8 and safety charge 10 arranged between outlet end of sleeve 1 and outlet charge 3 of explosive charge from smokeless gunpowder, with height of safety charge along the axis, which is determined by the following formula: n=(1.4…1.8)H, where H - thickness of sleeve housing.
EFFECT: higher safety of electric detonator in emergency situations.
2 cl, 1 dwg, 1 tbl
SUBSTANCE: detonating cap comprises a vessel, which holds an igniter, a primary explosive and a secondary explosive arranged so that the igniter ignites the primary explosive, from which in its turn the secondary explosive detonates, an electronic timer of primary explosive ignition delay and an explosion initiation facility connected to the mentioned facility of primary explosive ignition delay. The explosion initiation facility comprises a shock wave tube, one end of which is fixed in the inlet part of the vessel, and a cylindrical sleeve installed coaxially with the shock wave tube, and forwarded to its side with an inlet into its cavity. In the cylindrical sleeve cavity there is a magnetic anchor capable of displacement along the axis of the specified cylindrical sleeve. At the outer side the cylindrical sleeve is embraced with an inductance coil.
EFFECT: higher accuracy of actuation and extended storage life of a cap.
10 cl, 5 dwg
FIELD: blasting operations.
SUBSTANCE: explosive cartridge consists of housing (case without bottom) in which electric ignition assembly, lead charge and small-size detonating primer are arranged. Detonating primer and lead charge includes explosive charge enclosed in the cover in the form of a cap. Ratio of linear density of detonating primer cover head (product of head material density by its thickness) to linear density of explosive charge of lead charge (product of charge density by its height) is within 0.3 to 0.6. There is a gap between detonating primer and lead charge. One or more holes interconnecting the gap to environment are made in housing wall in the gap area. Heads of covers of detonating primer and lead charge, which face each other, are made from metal or alloy having low value (less than 20·106 kg/m2·s) of acoustic stiffness (product of density by sound velocity), e.g. aluminium. Thickness of detonating primer cover head is 0.4-0.6 mm.
EFFECT: improving cartridge operation reliability.
SUBSTANCE: electric spark igniter comprises a body, a dielectric block with inbuilt electric inputs, an igniting composition, an incandescence bridge fixed to electric inputs. Electric inputs are arranged in the form of thin metal tapes, plane of which is parallel to a vector of force that occurs when the igniting composition is pressed, and the incandescence bridge of nickel silver is fixed to a flat part of electric inputs by method of contact bonding process and is in volume of the igniting composition.
EFFECT: reduced time of the igniting composition usage, increased operation reliability, safety in production and operation.
8 cl, 1 dwg
SUBSTANCE: electrical igniter (EI) with protection against static electricity discharges refers to electrical initiation facilities and can be used in pyrocartridge structure development intended for using for instance in opening, separation, disengagement, etc. systems. EI includes body where small socket with electric terminals and resistance bridge, header with igniting charge and main charge are installed. The igniting charge is made of compound based on organic high explosive agent and zirconium powder and is separated from main charge by metal cap. In this structure, relative density of igniting charge is less than 0.65 and the main charge is made of high explosive agent not sensitive to static electricity discharge.
EFFECT: simplification of device structure.
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 operations.
SUBSTANCE: initiation system comprises a detonator, a detonating distributor with receiving points and wiring channels, an explosive charge, mounting elements. Between the distributor and the mounting elements there is a barrier with grooves and a thickness of 1-10 mm. Between the barrier and the charge there is a gas gap of 0.1-10 mm.
EFFECT: invention enables to carry out the evenly distributed blasting along the length of the charge.
5 cl, 1 dwg
FIELD: weapons and ammunition.
SUBSTANCE: contact-sector charge of a sheet explosive includes a detonator, an initiation system and an explosive charge. The latter is made in the form of sections with breakdown into sectors with a gap between them. Initiation system is made in the form of explosive strips of equal length and minimum width.
EFFECT: invention allows performing stable detonation at formation of non-interacting detonation waves at simultaneous multipoint discrete initiation.
SUBSTANCE: invention relates to field of high-accuracy systems of detonation, detonators with electronic delay and can be applied in composition of non-electric systems of detonation, systems of initiation based on shock-wave tubes (SWT), in initiation of detonation systems for carrying out blasting operations in mining industry, soldering, mass salute pyrotechnics, MES and others. Highly accurate detonator with electronic delay for SWT consists of case closed from one side, from other side connected to chock-wave tube, circuit of time delay, condenser, igniter and electromagnetic generator, placed between outlet of shock-wave tube and inlet of time delay circuit. Generator includes cover, frame, permanent magnet and coils, coiled on frame.
EFFECT: invention is directed at obtaining inexpensive, reliable, hermetic, safe under influence of shocks and vibration, unreceptive to electromagnetic noises, programmed detonator of digital delay, which is activated by wave-conductor impulses.
6 cl, 7 dwg
FIELD: weapons and ammunition.
SUBSTANCE: method to increase explosive yield consists in the fact that an ammunition with a casing is heated to a temperature below the temperature of explosive decomposition. In one version of realisation a device for realisation of the method to increase explosive yield represents a replaceable ring or rings of a projectile. In another version the master ring has an obturator in the form of a skirt turned backwards. In another version the device represents projectiles, mines and missiles of two dimension types of external diameter. In another version it represents a gun on a single recoil device with two barrels of different calibres. In another version it represents heat insulation of a charge or an ammunition. In another version it represents a bath with a substance having temperature below the temperature of explosive decomposition. In another version it represents a source of radio waves of microwave range. In the mass of the explosive there is a finely dispersed electroconducting substance evenly distributed, for instance, aluminium powder or cut coal fibre.
EFFECT: improved brisant and fragmentation action of an ammunition.
SUBSTANCE: intermediate detonator for borehole charges comprises a dome-shaped fixator, which retains and protects a case with installed initiation facilities, an explosive and a cover. The fixator design has openings for shock-wave tubes of detonator caps and stops for a charging hose, which makes it possible to perform mechanised charging of a well with automatic feed of the hose, and side elastic stops on the fixator, making it possible to easily align the direction of displacement of the intermediate detonator when redirecting into the well and preventing its reverse movement.
EFFECT: creation of a cheap, reliable, tight, safe, convenient intermediate detonator for well charges fixed in a well with the help of a structure element, which is driven by a pulse from a detonator cap.
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.