171 results about "Pyrotechnics" patented technology

The embodiment of the invention discloses a tubular column string. The tubular column string at least comprises a coiled tubing connector, a mechanical releasing tool, a centering device, a collar locator, a sand blasting perforation sliding sleeve, a hydraulic setting tool and a bridge plug. The sand blasting perforation sliding sleeve, the hydraulic setting tool and the bridge plug are sequentially connected in series in the direction from one end to the other end of the coiled tubing connector of the tubular column string, and the coiled tubing connector is used for being connected with coiled tubing. The whole operation of bridge plug tripping and setting can be completed through coiled tubing equipment, so that less equipment is used in construction, working procedures are few, and manual work is less; pyrotechnics equipment can be avoided, safety performance is high, the coiled tubing equipment is high in adaptability to well conditions, and large-discharge-capacity staged fracturing of a casing horizontal well can be achieved due to the full bore after the bridge plug is removed through drilling. The invention further discloses a bridge plug setting and sand blasting perforation combining method.

Enhanced airbag modules and associated methods are provided. An airbag module according to the invention may have a cushion with a venting portion. During normal vehicle operation, the venting portion may be closed so that inflation gas is not permitted to flow through the venting portion. A pyrotechnic may be ignited to open the venting portion when venting is desired. The pyrotechnic may be directly attached to the venting portion to burn through or mechanically rupture the venting portion, thereby forming an exit port. Alternatively, the venting portion may have a flap that can be detached from the housing by ignition of a pyrotechnic to permit venting through an exit port of the housing. The pyrotechnic may then be disposed within a fastener designed to fracture upon ignition of the pyrotechnic to release the flap from attachment to the housing. The pyrotechnic may, for example, be an initiator or rapid deflagration cord (RDC). The cushion may thus be more stiffly inflated for a high velocity collision, or less stiffly inflated in the case of a lower impact velocity or an out-of-position occupant.

A method and apparatus for retro-fitting an explosive setting tool to a non-explosive setting tool is provided to eliminate the use of pyrotechnics when setting auxiliary tools. An explosive setting tool is retro-fitted by removing the pyrotechnic elements of the tool and replacing them with a conversion assembly including a hydraulic pump, thus converting the explosive tool into a non-explosive tool. The hydraulic pump provides the energy necessary to set the auxiliary tool. Once the auxiliary tool has been set, the non-explosive setting tool can be brought to the surface and reset using a resetting tool.

An apparatus for simulating an explosive is disclosed. The apparatus includes a container including a powder for simulating an explosive plume, wherein the container bursts when gas is introduced into the container. The apparatus further includes a canister including pressurized gas, the canister coupled with the container so as to expel gas into the container when the canister is breached. The apparatus further includes a pyrotechnic coupled with the canister so as to breach the canister and produce an audible noise when the pyrotechnic is activated. In one alternative the apparatus includes a mechanical or electrical trigger that activates the pyrotechnic.

An airbag module has a rigid cushion with an integrated inflator. The cushion has a rear cushion panel and the inflator may have a front inflator plate attached to the rear cushion panel. A rear inflator plate is optionally provided and may be positioned within the cushion or outside the cushion. A pyrotechnic may be disposed within the space between the front inflator plate and the rear cushion panel and / or the rear inflator plate. An initiator may be seated in the rear inflator plate and / or the rear cushion panel to initiate combustion of the pyrotechnic. Instead of the front inflator plate, the inflator may have an expanse of tape that secures the pyrotechnic and / or the initiator to the interior of the cushion. The pyrotechnic may be sealed by the tape or by a foil pouch. The initiator may be secured by the tape or by a rear inflator plate.

The invention discloses a completely-integrated impact piece ignitor and a preparation method thereof, which belong to the technical filed of initiators and pyrotechnics. On the basis of a micro electronic mechanical system (MEMS) processing technology, the assembly can be finished in the process of processing a bridge foil, a flying plate, an accelerating chamber and a reflection plate, thus thepreparation method is beneficial to improving the assembly precision of devices. In addition, the completely-integrated impact piece ignitor has the characteristic of parallel processing of an integrated circuit, is convenient to produce in large batch and reduces the manufacturing cost, and is beneficial to improving the consistency and the reliability of the process; and meanwhile, by using themetal bridge foil, the completely-integrated impact piece ignitor has short igniting time and can be widely applied to ignition of a plurality of novel high and safe initiators and pyrotechnics.

The present invention relates to a non-pyrotechnic, self-illuminating projectile useful for marking, target illumination, or targeting adjustment which produces chemiluminescent light upon impact with an object. Because the production of light is delayed until impact, the projectile is not visualized until impact and the intensity of light upon impact is greater than light produced by projectiles that provide intermixing of light generating chemicals during flight.

The invention discloses an automatic pyrotechnic composition charging system. Through reasonable layout of the procedures of the pyrotechnic composition charging process according to the characteristics of automation and mechanization, and in combination with the manufacturing practice of initiators and pyrotechnics, the design method of the automatic pyrotechnic composition charging system is explored out, the utility system composition with sound functions is planned, a series of single procedure equipment and test method and equipment suitable for automatic pyrotechnic composition charging process are developed, and the single procedure mechanical equipment is assembled to form an automatic flow production line. The burdensome manual work is replaced by automatic production, so as to greatly improve the safety and efficiency of fireworks production, and highly promote the updating and upgrading of the traditional fireworks industry.

Techniques and methods of formation of ordered mixtures of particles by “clustering”. Clustering comprises local “structuring” consisting of a large “host” and smaller “guest” particles by various techniques. Small amounts of polymer are coated onto solid particles by various means. In one embodiment, an ordered mixture is created wherein the material that is of lesser quantity is of small particle size (the “B” particles) and the “A” particles are of larger size. The “B” particles are then coated onto a single A particle. By creating this ordered structure, each composite particle has the proper or stoichiometric amount of all ingredients. This dry composite material produced is appropriately used in various applications such as pharmaceutical formulations in the form of tablets, capsules, oral suspensions, inhalant, parenteral formulations and the like; energetics manufacture such as but not limited to explosives, propellants and pyrotechnics; agricultural products including but not limited to fertilizers, herbicides and pesticides; nutritional supplements and the like.

An automatic detection device for pyrotechnics, the invention relates to a detection device for resistance and insulation state of pyrotechnics. In order to solve the problem of a large amount of manual point-by-point detection tasks. for detection. It includes single-chip microcomputer, A / D conversion circuit, signal conditioning circuit, channel switching circuit, drive circuit, constant current source, display circuit and multi-channel signal gating circuit. The circuit is connected to each signal output end of the multi-channel signal gating circuit, and each signal input end of the multi-channel signal gating circuit is connected to each signal output end of the detected circuit one by one, and each signal input end of the detected circuit is one by one. One is connected to the signal output end of each channel of the channel switching circuit, the signal input end of each channel of the channel switching circuit is connected to the signal output end of the constant current source, and the controlled end of the channel switching circuit is connected to the On the drive signal output terminal of the single chip microcomputer.

Barrel assemblies (1) each include a plurality of projectiles (11) arranged in-line within barrel (12) and associated with discrete selectively ignitable propellant charges (13) for propelling projectiles (11) through the muzzle of barrel (12). Projectiles (11) are arranged with one another and barrel (12) so as to prevent rearward travel of an ignited propellant charge to the trailing propellant charge. The matter or objects contained within holding body (17) may include explosive charges for scismic exploration, fire retardants, fire extinguishing means, pyrotechnics, herbicide, insecticide, fertilizer or seeds. Methods of delivering loaded projectiles (11) for civilian purposes are claimed.

The invention provides a forest pyrotechnic detection method based on 3D convolution neural network, which comprises the following steps: establishing a preliminary forest pyrotechnic image sample data set; the structure of neural network based on 3D convolution is designed, and the time-depth parameters of convolution and pooling operation are introduced; performing training and optimization on 3D Convolution neural Network with the data set; the video to be processed is motion detected in blocks, and the suspected smoke area is judged. Using the optimized 3D convolution neural network modelto perform forward computation, the classification result of the suspected smoke region is obtained. The invention is based on 3D convolutional neural network, through 3D convolutional kernel slidingon time axis to combine spatial features of continuous frames, mining spatio-temporal features of continuous sub-images, ensuring high detection rate and reducing false positives caused by a large number of single-frame images, thereby greatly improving identification accuracy and possessing better robustness and generalization ability.

A method and system for automatically and reliably controlling equipment for outputting sound and, potentially, lighting, pyrotechnics and other effects in live entertainment productions based upon the real-time physical location of one or more specific performers within a performance area in either an absolute sense or relative to a controlled article of equipment. The system includes a radio frequency identification subsystem and an equipment control subsystem.

A water-resistant cartridge includes a pyrotechnic that when ignited launches water from a disrupter cannon to disable and / or destroy an explosive device. The cartridge includes a seal that seals between an outer surface of the cartridge and an inner surface of the barrel to limit water that escapes from the barrel rearward of the seal and cartridge. Prior to launching the water, the water in the barrel surrounds the cartridge forward of the seal. As the pyrotechnic burns and provides an expansive force on the sides of the cartridge, the water between the sides of the cartridge and the inner surface of the barrel resists the expansive force to help retain the shape of the cartridge, so that it may be more easily removed from the barrel after firing. The force provided by the pyrotechnic blows a cover of the cartridge off to provide the force directly to the water to launch the water.

A new type of pyrotechnic cup is disclosed. The pyrotechnic cup is designed such that it may be used as part of an airbag initiator. In some embodiments, the cup comprises a cylindrical portion and a dome that is attached to a first end of the cylindrical portion. A cruciform is also added to the cup. The cruciform is positioned at the apex of the dome. In some embodiments, the cruciform comprises one or more petals. Other embodiments may be designed in which deployment of the initiator causes gas to be directed out of the pyrotechnic cup via the apex of the dome.

A remote pyrotechnic ignition system includes a power supply for producing an electrical current in a transmitting induction coil to induce an electrical current in a receiving induction coil for igniting a pyrotechnic device. Thus, a wireless ignition communication section allows pyrotechnic mortars to be reused and substantially reduces set-up time by eliminating the wiring of fireworks normally required for a pyrotechnic production. Optionally, a capacitor is charged by the power source via a charging circuit and discharged via a firing circuit to produce the electric current in the transmitting coil in a pulse. The capacitor provides a two-stage firing safety feature. An electronic control device such as a circuit board may be mounted on the pyrotechnic device for controlling ignition of the pyrotechnic device and is especially useful in controlling ignition sequencing and overall ignition timing of a lift charge and burst charge of the pyrotechnic device.

A low-impact and high-bearing-capacity pyrotechnics release bolt comprises an inner barrel (3) and the like. One end of the inner barrel (3) penetrates through a cellular component (4) installed at the bottom of an external separation body. The other end of the inner barrel (3) is cylindrical and installed in an outer barrel (8). A slide rod (6) is installed inside the cylindrical end of the inner barrel (3). One end of the slide rod (6) is fixedly connected with the side wall of the inner barrel (3) through a shear pin (5) which is radially inserted into the slide rod (6). Wedges (7) penetrate through the side wall of the inner barrel (3) to be inserted into the inner wall of the outer barrel (8) and are located between the slide rod (6) and the outer barrel (8). A piston (9) is installed in the outer barrel (8). An explosive shell (14) is installed in the end, not connected with the inner barrel (3), of the outer barrel (8). An explosive stop plate (12) is installed in the end port, connected with the outer barrel (8), of the explosive shell (14). An explosive box (11) is installed in the explosive shell (14). Igniters (15) are installed on the explosive shell (14). The low-impact and high-bearing-capacity pyrotechnics release bolt has the characteristics of high bearing capacity and low impact; and meanwhile, no pollution or redundant matter is generated in the working process.

A method and apparatus for retro-fitting an explosive setting tool to a non-explosive setting tool is provided to eliminate the use of pyrotechnics when setting auxiliary tools. An explosive setting tool is retro-fitted by removing the pyrotechnic elements of the tool and replacing them with a conversion assembly including a hydraulic pump, thus converting the explosive tool into a non-explosive tool. The hydraulic pump provides the energy necessary to set the auxiliary tool. Once the auxiliary tool has been set, the non-explosive setting tool can be brought to the surface and reset using a resetting tool.

The invention relates to a forest fire prevention pyrotechnics identification method and system, and the method comprises the following steps of acquiring thermal imaging image information and visiblelight image information of the forest; preprocessing and extracting features of the visible light image information and thermal imaging images, determining and feeding back the visible light image information as daytime image information or night image information; determining whether there is a high temperature area according to the thermal imaging image information, determining whether the temperature of the high temperature area continuously rises; determining whether there is smoke in the cruise area according to the visible light image information, marking a suspected smoke area; comparing the suspected smoke area with a pre-stored smoke feature point library to determine whether it is a pyrotechnic area; performing static image recognition and alarming on the high temperature regionwhere the temperature continuously rises and / or the cruise region where the pyrotechnic region exists. The method provided by the invention performs all-weather cruise identification on forest fireworks, timely reports the fireworks area found, has high recognition accuracy and timely alarm, and greatly reduces losses caused by forest fires.

Thermal batteries using molten nitrate electrolytes offer significantly higher cell voltages and marked improvements in energy and power densities over present thermal batteries. However, a major problem is gas-evolution reactions involving the molten nitrate electrolytes. This gassing problem has blocked the advantages offered by thermal batteries using molten nitrates. The solution to this problem is the use of chloride-free molten nitrate electrolytes. Most important is the avoidance of potassium perchlorate (KClO4) or any other chlorine-containing substances that can decompose to produce chloride ions in any thermal battery component. The Fe+KClO4 pyrotechnic used to activate thermal batteries is a key example. The decomposition of such substances into chloride ions (Cl−) results in passivating-film breakdown and gas-producing reactions with the molten nitrate electrolyte. These reactions largely involve the lithium-component of the anode used in thermal batteries such as Li—Fe (LAN), Li—Si, and Li—Al. The introduction of chloride ions into the nitrate melt via the pyrotechnic materials produces a rapid breakdown of the protective oxide film on lithium-based anodes and leads to gas-producing reactions.

Enhanced airbag modules and associated methods are provided. An airbag module according to the invention may have a cushion with an inflatable protection zone and a flexible venting tube coupled to the inflatable protection zone. A closure mechanism may be used to compress the flexible venting tube against an anchoring member, such as a housing of the airbag module or a vehicle feature, until venting through the flexible venting tube is needed. The closure mechanism may then be actuated, for example, by igniting a pyrotechnic within a specially designed bolt of the closure mechanism. The bolt may, for example, have a bore with a pyrotechnic initiator molded-in-place within the bore. The bolt may fracture to open the closure mechanism, thereby permitting inflation gas to flow out of the inflatable protection zone via the flexible venting tube.

A small satellite propulsion system using a gaseous oxidizer and a gaseous fuel as primary propellants with a liquid as a film coolant for the inner surface of the rocket motor. The gaseous fuel is also used as a pressurant for the coolant and as a cold gas propellant for attitude control system (hereinafter “ACS”) thrusters. The oxidizer, fuel, and coolant tanks, as well as most valves and plumbing, are integrated into a single core unit along with the rocket motor, rocket motor plumbing, and safety valves. Attitude control thrusters may be remotely located with plumbing to the fuel tank. The core unit is four inches high and less than four inches deep and wide. The small satellite propulsion system uses no pyrotechnics and no hazardous toxic materials.

Apparatus for performing mechanical tests on structures, in particular on energy absorber elements in the field of railways, wherein a pyrotechnics launcher comprising a launch tube slidably receiving a thrust rod is disposed at one end of a segment of rail track, said pyrotechnics launcher being supported in its central portion by a support element and being prevented from moving backwards by a buffer stop element disposed behind the pyrotechnics launcher, said support element and said buffer stop element including fixing means making it possible to hold said pyrotechnics launcher at various heights relative to the rails of the rail track.

The invention belongs to the technical field of pyrotechnics, and relates to the improvement on digital electronic detonators and detonating mode thereof, in particular to a control system of wireless remote field programmable digital electronic detonators. The control system comprises wireless remote field programmable digital electronic detonators (100) and a wireless detonating device (200) which can compose a wireless two way communication network (400) with a plurality of wireless remote field programmable digital electronic detonators (100) from 100.1 to 100.n, therefore, the wireless detonating device (200) and the wireless remote field programmable digital electronic detonators (100) complete the tasks of field programming and detonating of the digital electronic detonators. The invention solves the defect that a large number of detonators can not be connected with wire communication simultaneously when controlling remote detonating, thus eliminating the unreliable factors caused by numerous wire communication connection points as well as the interference easily caused on the long side traverse, reducing the communication cost when conducting long distance multi-node filed programming on the detonators, and effectively controlling the unlawful application of the detonators.

Thermal batteries using molten nitrate electrolytes offer significantly higher cell voltages and marked improvements in energy and power densities over present thermal batteries. However, a major problem is gas-evolution reactions involving the molten nitrate electrolytes. This gassing problem has blocked the advantages offered by thermal batteries using molten nitrates. The solution to this gassing problem is to eliminate the chloride ion contaminates. The most important step in reducing chloride contamination is the avoidance of potassium perchlorate (KClO4) or any other chlorine-containing substances that can decompose to produce chloride ions in any thermal battery component. The Fe+KClO4 pyrotechnic used to activate thermal batteries is a key example. The decomposition of such substances into chloride ions (Cl—) results in passivating-film breakdown and gas-producing reactions with the molten nitrate electrolyte. These reactions largely involve the lithium-component of the anode used in thermal batteries such as Li—Fe (LAN), Li—Si, and Li—Al. The introduction of chloride ions into the nitrate melt via the pyrotechnic materials produces a rapid breakdown of the protective oxide film on lithium-based anodes and leads to gas-producing reactions.

The invention relates to cartridged ammunition, particularly blank ammunition, having a cartridge shell (3) and a projectile (2) placed therein. A propellant chamber (4) accommodating a pyrotechnic of a propellant charge (5) is disposed in the cartridge shell, such charge being ignitable by an ignition device (13) also containing pyrotechnic material that generates propellant gases that act on the base (8) of the projectile and propel the shot out of the cartridge shell. In order to prevent the pyrotechnic charges of the propellant charge and / or the ignition device from self-igniting at high ambient temperatures, particularly in a fire, thus tearing apart the cartridge shell and projectile and being flung away, an inert, meltable material is mixed into the pyrotechnic charges of the propellant charge and / or the ignition device. This material has a melting temperature that is lower than the self-ignition temperature of the pyrotechnic charge with the lowest ignition temperature and, upon melting, phlegmatises the pyrotechnic charges of the propellant charge and / or the ignition device.

The present invention relates to a dry process for the manufacture of pyrotechnic objects from at least one reducing charge selected from guanidine derivatives, metal hydrides, alkali metal hydrides and alkaline earth metal hydrides, and at least one oxidizing charge selected from alkali metal nitrates, alkaline earth metal nitrates and basic metal nitrates, at least one of said reducing and oxidizing charges having the property of flowing under stress. Said process makes it possible to obtain pellets and small tablets directly by compaction / compression, to obtain granules, usable as such, by compaction and then granulation, and to obtain compressed objects by compaction, granulation and then compression. The high-performance pyrotechnic objects obtained constitute a further subject of the invention.

This invention relates to a fireworks used lemon flashing stars and production methods. It use pyrotechnics agent to produce. The crude drug of this lemon flashing stars is in powder form, composited by the potassium perchlorate 16-20, magnalium power18-22, chloridate rubber6-15, nitrate barium35-40, cryolite 8-10, resin 5-10 (according to the weight). The steps of produce lemon flashing stars are: select raw material, mixing, and then dilute by appropriate amount of alcohol, modeling, and dry. The stars have good chemical stability, hygroscopicity small, harmless to the human body.