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IPC classes for russian patent Detonator pellet (RU 2507186):
Another patents in same IPC classes:
 Intermediate detonator for borehole charges / 2484426
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.
 Safe device for electric initiation of liquid explosives / 2471144
Invention relates to safe devices designed for electric initiation of liquid explosives, both individual and multi-component, such as anticlastic ones. A device comprises a hollow body providing for liquid explosives access inside a body, a resistive element connected to two electrodes in the form of conductors in insulation. One of electrodes is fixed in the body by means of its flattening at one end and when submerged into a liquid explosive is arranged at the bottom, the second electrode is arranged freely, at the same time comprises a unit, arranged inside the body, preventing approach of a resistive element to the inner surface of the body, at least at one side, to the distance below the thickness of the critical layer of liquid explosive detonation. As a unit on a conductor in insulation it is possible to install a bushing or a ball from a non-electroconductive material. And a resistive element may be a section of a conductor from a refractory metal.
 Diagram of controlled detonation logic chain / 2470256
Invention refers to blasting operations, and namely to detonation systems intended for controlled detonation distribution from one or more initiating agents and initiation of several explosive charges or several places of one charge. It can be used in several spheres of blasting engineering to reduce the hazard of preparation of different explosive charges or devices containing them for explosion. The diagram of the controlled detonation logic chain consisting of the main channels on the basis of at least one AND logic element having at least two inputs and one output brought into action at least with one initiating agent connected to inputs of AND logic element also includes one controlled channel branching as per the number of AND logic elements. The controlled channel connects two points of one of the main chain channels led to each AND logic element so that its length is less than length of section of the main channel between those points.
 Methods, devices and systems of electronic time delay / 2439482
Perforation system in a well comprises an electronic unit of time delay, including an input assembly, an electronic circuit of time delay, and an output assembly. The input assembly is activated by external control action, at the same time its element is displaced for activation of the electronic time delay circuit. The electronic circuit of time delay comprises a time delay device connected to a circuit of firing voltage. The electronic time delay circuit counts time delay, and after its completion it increases voltage, until the specified threshold voltage of firing is exceeded. After the threshold voltage of firing is exceeded, the trigger device switch shall be punched to transfer energy to an electric device with an initiating charge for initiation of an additional charge detonator in an output assembly. The additional charge detonator develops output of blasting energies to blast the next element of the explosive substance or propellant, such as a group of cumulative charges in the perforation system in the well.
 Device for initiation of impact-wave pipe and electric detonators with remote actuating element / 2421687
Device for initiation of impact-wave pipe includes housing performed in a form of threaded connection of two parts, foundation and nozzle. At housing foundation there installed is dielectric bush with central contactor necessary for provision of plug-type connection with inner electrode of replaceable discharger that consists of outer electrode in a form of a bush with tip of conical shape. Inside the tip there installed are inner electrode and dielectric isolator with the possibility of generating electric discharge that initiates impact-wave pipe. Dielectric isolator is located between inner and outer electrodes. Inner electrode is performed in a form of a needle and projects in relation to outer electrode tip with formation of spark gap equal to 0.15 mm. Nozzle has a through hole for axial location of impact-wave pipe and replaceable discharger in it from opposite sides, replaceable discharger is fixed along central axis and through the pad, that provides tightness of plug-type connection from penetration of combustion products, it is pressed to housing foundation for provision of contact with replaceable discharger outer electrode.
 Method of handling articles comprising explosive charge, and explosive device / 2415369
Entire charge or its layer is arranged between electrically conducting plates that make electric circuit elements whereto constant potential difference is applied before impact wave affects the charge. Uniform electric field is induced with intensity exceeding breakdown strength of explosive arranged between the plates. On generating detonation wave in explosive charge positive potential is applied to first plate, as seen in direction of wave impact, while in preventing unauthorised blasting, circuit is kept open, or charge sensitivity to detonation pulse is reduced by applying positive potential to opposite plate. Explosive device comprises impact wave generator and capacitor with plates where between main explosive charge or its layer is placed, and whereto constant high-voltage source is connected to break the circuit or to change polarity. Explosive layer thickness between plates is selected to exceed explosive detonation excitation depth on loading explosive by impact wave generator.
 Detonation splitter in impact-wave tubes (iwt) / 2396509
Detonation splitter in IWT consists of casing, insert and cover. Proposed splitter does not comprise special ignition charge. Sealing steeped insert seals n-th amount of IWT over their side surface and constricts their sift at certain distance from the case inner surface. Insert is made from rubber mixes that feature average oil-and-petrol resistance and n holes. Outer thread smooth-bottom cover features either semi-spherical or paraboloidal shape. Case and cover can be made from plastics and comprise jointing thread.
 Device for electric blasting / 2360214
Device for electric blasting comprises blasting circuit, power supply source, switch, voltage converter and capacitor-accumulator, inductance coil, the first and second electronic switchboards, unit for power supply source control, detector of capacitor-accumulator charge voltage, detector of inductance coil current, microcontroller with analog-digital converter and indication unit. Capacitor-accumulator is serially connected to the first electronic switchboard, blasting circuit, inductance coil and detector of inductance coil current, creating circuit, and parallel to detector of capacitor-accumulator charge voltage and voltage converter. Power supply source via switch, the second electronic switchboard is connected to inductance coil, blasting circuit and unit of power supply source control. Microcontroller is connected to unit for control of power supply source, unit of indication, voltage converter, the first and second electronic switchboards, detector of capacitor-accumulator charge voltage and detector of inductance coil current. Device indication unit is equipped with three light diodes.
 System of "sid" borehole charge initiation / 2354926
System for "SID" borehole charge initiation may be used in mining industry and in construction for increased reliability and efficiency of explosive substances (ES) borehole charges initiation with low shock-wave sensitivity. System represents body of polymer material consisting of two compartments, ES is located in upper compartment, and stick-detonator - in lower compartment, being equipped with pipeline of initiation system communications (ISC) and handle for transportation and lowering of body in well that differs by the fact that ISC are placed and fixed between external doubled vertical ribs of body rigidity or inside separate pipe of smaller diametre, which is located aside of body along its length, or inside body in through compartment made in the form of two plates connected at an angle to each other and adjacent to internal surface of body. Body is made of circular section pipe with cover closing lower compartment equipped with spring-loading elements for fixation of ICS and pressing of detonator sticks to upper compartment of body. Length of separate pipe with smaller diametre installed outside body is more than body length due to ends of pipe that project at the top and bottom, with length of 2-4 pipe diametre, at that lower end of pipe is cut at the angle of 25-45 degrees to vertical line from external side of pipe, at that there are cuts (slots) at pipe ends at the distance of 1-2 cm from pipe ends, with length of at least four, and width of at least one and a half of diametre of used wave guides or detonating cords, at that lower cut (slot) is located from the side of body and is installed in single plane with central axes of pipe and body, and upper cut is located at the angle of 90 degrees to lower cut or inside cumulative cavity installed in body vertically along its side surface and directed outside. Upper part of body is made in the form of cumulative funnel. Body handle is made in the form of cross, or in the form of pyramid carcass or in the form of trapezoid. ES located in upper part of body has speed of detonation that is higher than detonation speed of borehole charge ES, but lower than detonation speed of detonator sticks located in lower compartment of body.
 / 2335732
 Airborne reconnaissance system ammunition / 2506532
Invention refers to systems providing individual groups of foot soldiers with necessary real-time information, and namely to ammunition of an air reconnaissance system. Ammunition of the air reconnaissance system includes a housing and propellant charge. A remote bottom initiation device is arranged in the housing. Charge is activated from the initiation device and destructs the ammunition housing at the required altitude. A container is adjacent to propellant charge. The container includes a housing, a retransmission station with an antenna, a power supply unit and a parachute. Photo or video recording equipment is arranged in the housing. The retransmission station with the antenna transmits equipment operation results to a ground control panel. The power supply unit supplies electric current to the photo or video recording equipment and retransmission station. The parachute is attached to the container and laid in the cavity of the head part of the ammunition housing. When in initial position, the power supply unit is electrically connected to the photo or video recording equipment and the retransmission station. The power supply unit is made in the form of a pyrotechnic current source installed with an end face of its pyrotechnic equipment to propellant charge. Photo or video recording equipment is arranged at opposite end face of the container housing with a lens towards the parachute. A clamp is arranged between the parachute and the container, and its ends are located along the container and enclose it on diametrically opposite sides.
 Method of producing oriented-grain shaped lining / 2502038
Shaped lining blank is subjected to rotary drawing, gaging and annealing. Said rotary drawing of shaped lining is from constant- and variable-depth blank at varying direction of blank rotation in one pass several times. Ling gaging is made at solid mould. Heat treatment of shaped lining is performed under conditions of low-temperature annealing.
 Method of creation of directed explosion / 2498199
Method of creation of directed explosion comprises burst of initial sources and creation of a shock wave. As initial sources an explosive is used, formed as spirals with varying pitch and the winding radius. The spirals are located in the space as a fan, forming a circular straight cone in which the apex angle Θ is connected to the speeds of blast wave Vbw and shock wave Vsw with the ratio: Θ=arssos (Vbw/Vsw), followed by blasting of the cone from the apex.
 Device for explosive squeezing of materials / 2497581
Invention relates to explosive processing and can be used for compaction of powders, production of new materials with unique properties at high pressures. Proposed device comprises cylindrical charge of explosive wherein block of material to be squeezed is arranged axially. Metallic liner is arranged with clearance on outer side surface and furnished with sheet propellant and end face detonation plating. Similar detonation plating is added to charge second end face. Said metallic liner allows phase rate of detonation excitation along cylindrical charge side surface U=(1.3…1.6)D, where D is charge detonation rate.
 Method to generate jet stream and shaped charge of perforator for its realisation / 2495360
Method and device relate to perforation of well casing pipes for production of well, gas, water, and may be used in jet perforators that improve hydrodynamic connection of a bed and a well, and providing for increased well yield. A shaped charge comprises a body, inside of which there is an explosive cartridge. The cartridge gas a charge hollow coated with lining. Inside the lining there is an insert fixed with a layer of plastic material. The density of the plastic material layer is 0.8-2.4 g/cm3. The product of density by thickness of the plastic material layer is less than the thickness of the wall insert. The ratio of insert top thickness to the diameter of the lining base is from 0.1 to 0.3. The ratio of insert height to lining height is from 0.5 to 0.8. The explosive cartridge is exploded. Detonation products press the shaped lining, then the plastic material is pressed and heated. The impact wave energy is reduced. The speed of shaped lining pressing is reduced. The impact wave from collision of the insert and the lining is sent from the zone of collision along the lining material. Large amount of the lining and insert participates in generation of the jet stream. The jet stream is shaped.
 Devices and methods for well bore perforation / 2495234
Method of subsurface perforation lies in delivery of shaped charge to the well; this charge consists of a case, explosive material in the case and coating that surrounds explosive material in the above specified case; it has a top part which profile is thicker than profile of any other part of the coating, at that coating and its top part are made of powder material and density of the material in the top part is bigger than density of material in adjoining part of the coating while porosity in the top part is less than porosity of material in adjoining part of the coating; thereafter shape charge is detonated.
 Method and device for creating jet streams with elimination of hollow charge spin / 2491497
Jet recess represents a truncated cone surface coated with auxiliary facing of material with density exceeding that of explosive charge. Said facing is compressed and thrown by the charge detonation products onto outer surface. Jet facing is made of copper or its alloys, or refined iron. Jet stream generator consists in that auxiliary facing is connected by its one end closer to initiator with extra body. OD of extra facing vertex makes 0.26D and base diameter does not exceed 0.8D. Extra body diameter is not smaller than extra facing vertex OD at the joint point. Extra facing feature half-span internal angle β of 8 - 10 degrees and external angle β1 of 8 - 13 degrees. Jet facing OD does not exceed 0.25D. Note here that internal angle of half-span β2 makes 0 - 10 degrees, while external angle β3 makes 0 - 12 degrees where D is jet charge OD. Extra facing base is conjugated with perforated diaphragm OD. Perforated diaphragm ID is conjugated with facing OD on the base side.
 Method of making detonating cord / 2491267
Invention relates to production of detonating cords. Proposed method comprises forming the core of preset configuration of explosive, applying protective shell thereon by drawing, expanding to produce detonating cord with a zone of flat area with rectangular cross-section. Said protective coating may be made of aluminium. Simultaneously the system including aluminium shell and plastic explosive are drawn.
Method to increase explosive yield and device for its realisation /versions/ / 2490586
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.
 Metal-based jet charge lining material / 2489671
Jet charge lining is made of iron-based material and contains a limit mass fraction of admixture elements and alloying elements, %, not more than: carbon - 0.005, manganese - 0.005, silicon - 0.02, sulfur - 0.003, phosphorus - 0.003, chrome - 0.01, nickel - 0.025, copper - 0.01, aluminium - 0.5, oxygen 0.003, nitrogen - 0.005. The lining may have axisymmetric shape or is made in the form of a cone, or a truncated cone, or a part of hemisphere, or an inner jet-forming layer of 2-layer liners. It may be with an isotropic structure or with a structure formed mainly with identical crystallographic direction of crystals with columnar structure arranged along the normal line to the generatrix of the jet lining surface.
 Detonator with electronic delay for shock-wave tube (swt) / 2497797
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.
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FIELD: chemistry.
SUBSTANCE: invention relates to industrial blasting means, namely detonator pellet, intended for initiation of hole charges in drilling and blasting works at mining enterprises. Detonator pellet for industrial blasting consists of charge of explosive substance in plastic shell, provided with canal and one or two sockets and made from injection moulding mixture of trotyl with pentaerythritol tetranitrate (TEN). Mixture contains 45-55% of TEN with specific surface from 1100 to 2400 cm2/g or 56-100 wt % of powder-like pentolite, made on such TEN, of total charge weight. TEN is produced directly in technological process or is obtained by mixing product with specific surface larger than 2400 cm2/g and smaller than 1100 cm2/g, and powder-like pentolite contains from 45 to 55 wt % or from 88 to 92 wt % of TEN, trotyl constituting the remaining part.
EFFECT: invention ensures obtaining charge of higher quality as to homogeneity, more technological in manufacturing and more reliable in exploitation.
2 dwg
The invention relates to the field of industrial explosives. Claimed checker-detonator injection of a mixture of TNT with pentaerythritol by TETRANITRATE (PETN), is designed to initiate borehole charges of industrial explosives (e) when blasting in mining enterprises.
Industrial checkers-detonators (SM) injection of a mixture of TNT with ten (pentolite) are widely used abroad, for example, Swedish checkers PDR-150, PDR-400, PDR-450 technical data firm Nitro-Nobel. AV. Known and domestic pentolite SM, for example, a utility model certificate No. 12236 from 03.06.99, utility model patent # 36506 from 10.11.03, the invention according to the patent of Russian Federation №2177927 from 10.01.02. They all have a through channel and a socket for mounting its means of initiation (detonating cord or the non-electric initiation system - NSI) and is equipped with a cardboard or plastic cover. Some of the domestic SM have an extra slot for placement of the cap overlapping the NSI with the aim of improving the reliability of operation, for example, RF patent for the invention №2389969, RF patent for useful model №52165.
Checkers PDR-150, PDR-400 and PDR-450 can hardly be attributed to direct analogues declare SM, because they differ significantly from domestic constructively. The nest them is actually through with openutm channel, and inside charge between channels is plastic vessel with a bulk heater. They are designed to use very weak means of initiation and of such schemes installation (piping), which do not apply. The complexity of manufacturing such checkers are much higher than domestic.
The closest analogue (prototype) declare SM authors selected SM for useful model №36506, representing a charge of pentolite 50/50 (50% PETN) with socket and channel shrinkable polyvinylchloride (PVC) sheath. (It should be noted here that, given the technological tolerances pentolite is a composition in which the content of the heater may vary from 45 to 55 wt. -%).
The main disadvantage of the prototype, and the other analogues, due to the low sedimentation stability of pentolite, which complicates the manufacturing technology SM and negatively affects their quality. Cooked pentalic requires continuous mixing before pouring it into the mold or casing, and in the molding process SM is a redistribution of ten in height, resulting in the lower part of the charge SM parabolised coil, and the top is depleted them. As a result, the difference in the content of the heating elements on the top and bottom of the charge can reach 10% or more. Increases and the probability of formation of casting defects in the upper part of the charge. Uh what about the leads to, what different parts of the charge can vary greatly in density, solidity, power and sensitivity, especially at larger sizes SM. Consequently, there is a possibility of failure of the actuation SM, and reducing initiating impact on low-sensitivity column of industrial EXPLOSIVES borehole charge.
An object of the invention is the creation of SM charge higher quality and uniformity CENTURIES, more adaptable to manufacture and more reliable in operation.
The technical result according to the claimed solution is achieved by using in the explosive composition of ten specific dispersion (specific surface area) or powdered pentolite made on such PETN, taken in a predetermined ratio.
It is known that the sedimentation stability of the suspension is directly related to the dispersion of the filler (solid phase). The stability of the system TNT-ten (50/50) could be improved by the addition of superfine PETN (with a specific surface area 4000-6000 cm2/g) instead of the regular (with a specific surface area 450-700 cm2/g). However, such a heater can be obtained only by special technology, making the product very expensive, which may affect cost, ETC., and therefore its competitiveness.
Authors who took to research heater with a specific surface area 1100-2400 cm 2/g, which can be obtained in the usual process adjustment mode settings crystallization and therefore practically does not differ from a staff of ten at cost. In parallel, as a variant of increased safety, was studied and the preparation of molded pentolite using powdered pentolite product in which particles of PETN covered with TNT and PETN/TNT may vary within wide limits. Were selected "corded" pentalic 90/10 (88-92% PETN), used for detonating cords, and pentolite 50/50. Ten to powdery pentolite used the same selected dispersion (1100-2400 cm2/g).
In the preparation of molded pentolite 50/50 of powdered pentolite 90/10 to 56% powdered pentolite doblados 44% of TNT. When using 100% powder pentolite 50/50 product simply melted under stirring. It turned out that the molten pentalic identical mixture made from individual components.
The cast pentolite was determined viscosity and sedimentation stability (separation) as two parameters characterizing the manufacturability of the molten mixture.
The results are shown on graph 1. Curve 1 shows the dependence of the deviation of the contents of ten of the nominal value Δ, %) from its specific surface area within 15 minutes of exposure, and curve 2 represents the dependence of viscosity (ν, PZ) of the melt from the specific surface area of the heater.
The analysis of the presented dependences shows that the viscosity of pentolite over the whole range of selected values of the specific surface remains suitable for manual (up to 40 poises), and mechanized fill (up to 25 poises).
Simultaneously, this specific surface and provides sufficient sedimentation stability of pentolite: deviation of the contents of ten of the nominal value for 15 minutes is in the range from a few percent to tenths of a percent in admission to the recipe ±5%. The optimum can be considered the region from 1200 to 2300 cm2/g, where provided as high sedimentation stability, and low viscosity of pentolite. However, research in the context of a specific molding technology checkers, where a significant portion of CENTURIES crystallizes in the first minutes of the fill, and after 5 minutes, the mold is turned over a bottom up and sedimentation changes direction, showed that the explosive charge remains within tolerance when using heating elements with a specific surface area of 1100 cm2/year
It should be noted that ten of the specified interval dispersion (specific surface area) can be obtained by mixing the product of the specific surface of less than 1100 cm /g with the product of the specific surface of more than 2400 cm2/, So that a mixture of 60% of the ten specific surface 2455 cm2/g and 40% of the ten specific surface area of 700 cm2/g yields a product with a specific surface area of 1770 cm2/year
The design of the SM is shown in figure 2, where 1 - HV, 2 - channel, 3 - slot, 4 - shell.
Possible design of the SM with one slot and channel.
Bomb-detonator for industrial explosives, consisting of a charge of explosives in a plastic shell, provided with a channel and one or two nests and made of castable mixtures of TNT with pentaerythritol by TETRANITRATE (PETN), characterized in that the mixture contains 45-55% of heating elements with a specific surface area of from 1100 to 2400 cm2/g or 56-100 wt.% powder pentolite made on such PETN, by weight of the total charge, and the heater made directly in the process or obtained by mixing the product with a specific surface area greater 2400 cm2/g or less 1100 cm2/g and a powder pentalic contains from 45 to 55 wt.% or from 88 to 92 wt.% PETN, TNT - the rest.
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