170 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.

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 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 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 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.

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.

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.