76results about "Ammunition fuzes" patented technology

The application discloses a kind of plasma high-pressure ignition device, it is related to electronic detonator initiation technology adjacent area, to solve the technical problem of low ignition power, energy leakage is serious, low airtightness of traditional ignition device, provide a kind of energy concentration, airtightness strong plasma high-pressure directional ignition device.The core structure includes high-pressure ignition module, semiconductor bridge, fuse, test hole, sealing wrapping layer and integrated metal tube shell.The igniter adopts integrated structure design, and high-pressure ignition module, semiconductor bridge and explosion-proof protection module are integrated;By using high-temperature resistant sealant to fill the gap between the metal tube shell, a pressure environment above 0.5MPa is achieved to prevent leakage;The device can be widely used in gas turbine, aerospace thruster, oil drilling equipment and other high-pressure scene ignition system, with reliable sealing, stable structure, easy assembly.

Connection of detonation tube and lightweight instantaneous fuse for a residue- free explosive system of non-electric detonator that consists of the tube (2), in longitudinal opening of which at least one cylindrical seal (3, 3', 4) having inner longitudinal opening arranged on one side of the connection (1) to insert the detonation tube (5) and on the other side of the connection (1) to insert the lightweight instantaneous fuse (6) is attached irremovably. The inserted ends of the detonation tube (5) and the lightweight instantaneous fuse (6) are attached in the seal (3, 3', 4) also irremovably.

An EFI or LEEFI that provides enhanced detonation energy sufficient to directly detonate a main charge to improve the reliability and ease the qualification of an explosive firing train. This is accomplished by forming the EFI’s output charge from an explosive material typically used as a booster explosive (e.g., PBXN-5, CH-6 and Composition A5) rather than a primary explosive and making the diameter of the output charge greater than the diameter of the barrel thus increasing the total mass of the output charge. For use in military grade munitions, the EFI’s casing is formed with one or more vent holes radially adjacent the output charge.

This invention discloses a cup-type bridge wire ignition resistor and its manufacturing process. The cup-type bridge wire ignition resistor includes a bridge wire substrate, a cover plate pressed and fixed onto the bridge wire substrate, and pads disposed on the outer periphery of both ends of the cover plate and the bridge wire substrate. A bridge wire is welded and fixed to the inner side of the bridge wire substrate. The cover plate has a cup hole corresponding to the bridge wire position to avoid the bridge wire. The bridge wire is electrically connected to the pads. This invention forms a cup-type bridge wire ignition resistor by setting a cup structure, which is more than 80% smaller in volume than other traditional types of bridge wires. Furthermore, the bridge wire is placed inside the cup, preventing easy damage. This invention uses a cup to fill the ignition agent, and the agent is enclosed inside the cup, making the ignition head less prone to breakage, thus improving shock resistance, safety, and reliability.

An ammunition cartridge casing is provided having a primer body and a casing body. The primer body has an inner primer portion and an outer primer portion configured to nest in conformance with an outer surface of the inner primer portion. The outer surface of the inner primer portion provides a circumferential trench having a radially outwardly extending circumferential wall portion contiguous with an axially extending circumferential wall portion. The casing body has a distal end portion and a proximal end portion. The proximal end portion of the casing body is interposed between the inner primer portion and the outer primer portion within the trench having an interlocked axially extending circumferential portion and an interlocked radially outwardly extending disc portion of the casing body entrapped between the inner primer portion and the outer primer portion. A method is also provided.

The application discloses a kind of electronic detonator sealing test tubes under the condition of temperature and pressure coupling and sealing performance detection test method, its method includes the following steps: a certain amount of chemical reagent is loaded in empty tube shell, to ensure that the gas production after thermal decomposition reaches target pressure by internal pressure;Power positive line, negative line and signal line are welded on PCB board, then loaded into empty tube shell, injection plug card is blocked to empty tube shell, to obtain test tube;Power positive line and negative line are connected with power supply, and signal line and negative line are connected with signal amplifier and oscilloscope;Test tube is placed in high-low temperature chamber, heated to decomposition temperature, observe the internal pressure change of test tube, keep high temperature until target pressure is reached;Lower to preset low temperature, record pressure change curve and analyze.The application considers the influence of environmental temperature change on the sealing performance of electronic detonator, realizes real-time quantitative analysis of sealing performance, effectively improves the test efficiency of electronic detonator sealing performance detection.

The pyrotechnic igniter simulator (1) has a detection element (5) that is able to detect at least one ignition pulse, a microcontroller (6) that is able to determine characteristics of the ignition pulse detected by the detection element (5) and to control an impedance block (7) depending on these characteristics, the microcontroller (6) being able to be configured remotely, and the impedance block (7) being able to be simulated at one of two different impedance values depending on these characteristics, one of the impedance values, referred to as the high value, simulating activation of the igniter in response to the detected ignition pulse, and the other impedance value, referred to as the low value, simulating non-activation of the igniter in response to the detected ignition pulse, the resulting simulator (1) being autonomous and especially proficient.

The application discloses a kind of high impact load under spring mass system dynamic response polarized optical measurement system and method, belong to optical measurement technical field, for analog launch load and service load etc. High impact load working condition of spring mass system, by constructing birefringent interference color feature unit on the surface of the base and mass block of spring mass system, using polarization dark field to filter background stray light, cooperate with high-speed camera, so that mass block presents as high-contrast color spot, through HSV color segmentation and relative displacement calculation based on motion coordinate system, the non-contact, clear and continuous measurement of millisecond transient displacement response of mass block is realized.The application effectively fills the experimental measurement blank of high overload dynamics, eliminates the interference of the increased mass caused by the introduction of sensor in contact measurement, and provides high-fidelity visual data support for the dynamic response research of spring mass system in high dynamic environment.

The utility model relates to electronic detonator technical field especially can be used to wireless electronic detonator medicine head detection's anti - sympathetic detonation device. A kind of anti - sympathetic detonation device for wireless electronic detonator medicine head detection includes: shell, multiple through holes are arranged on it, multiple the through hole is along the wireless electronic detonator medicine head arrangement setting;The through hole with the through hole between arrangement is provided with partition device, so that the shell cover is set in a row of wireless electronic detonator medicine head, the position of the wireless electronic detonator medicine head with through hole corresponds, the wireless electronic detonator medicine head with the wireless electronic detonator medicine head is separated by partition device. Through the above structure, the wireless electronic detonator medicine head arranged in a row is covered at the same time, adjacent wireless electronic detonator medicine head can also be separated, avoid one wireless electronic detonator medicine head sympathetic detonation, influence adjacent wireless electronic detonator medicine head.

This invention discloses a self-short-circuit plug-in type high-temperature resistant electric detonator for oil and gas wells, relating to the field of cable-driven perforation in oil and gas wells. The invention includes a detonator body and a socket. The detonator body includes a metal shell, within which, from the rear end to the opening, a basic detonator, an ignition head, a control component, and a short-circuit connector are sequentially installed. The ignition head is electrically connected to and ignited by the control component and the basic detonator. The short-circuit connector includes a bayonet plug, within which are interconnected copper needles and conductive spring plates. The copper needles and conductive spring plates extend from both ends of the bayonet plug. The end of the conductive spring plate has an arched portion, the outer side of which contacts the metal shell. The socket includes a connector, which has interconnected conductive structures and a metal cage. The conductive structures extend from one end of the connector. This detonator can reliably achieve self-short-circuiting, exhibiting excellent operational safety and stability, and possesses good industrial applicability and market promotion value.

A propellant mechanism for launching a projectile comprises a propellant with a detonation point at which said propellant is initially detonated which is at one end in a forward direction closest to said projectile, such that the detonation proceeds through the propellant in a backwards direction away from the projectile. A reflecting surface is provided away from said projectile for reflecting the detonation into the forward direction towards the projectile.

The invention discloses a universal contact type electronic detonator for an oil and gas well and a blasting method, and relates to the technical field of mine blasting. The electronic detonator comprises a sealing pressure-bearing piece, an electronic control assembly, an electric ignition head, a basic detonator and an outer shell, the sealing pressure-bearing piece comprises a central contact, a grounding shell, a conductive disc and an insulation injection molding body, the central contact, the grounding shell and the conductive disc form three conductor paths which are insulated from one another, and the insulation injection molding body simultaneously forms an isolation interface between the inside and the outside of the detonator. The conductive disc is provided with an insulating bayonet groove, and the opening part of the outer shell is fixed at the insulating bayonet groove, so that the outer shell is not electrically connected with any conductor path. Through integrated design of the three conductors, electric insulation, pressure-bearing isolation, control detection and modular assembly, shell penetrating leads and multiple sealing interfaces can be reduced, the pressure resistance, insulation reliability, assembly consistency and online detection capacity are improved, and the device is suitable for oil and gas well cable clustering perforation, multi-stage selective emission and underground reliable detonation scenes.

In an ignition unit for a propellant charge (8), comprising an elongated ignition transfer charge (2) made of propellant powder, through which a free ignition channel (5) runs in its longitudinal direction, and a combustible support tube (3) that surrounds the ignition transfer charge (2) perpendicular to the free ignition channel (5), the ignition transfer charge (2) is formed from a first material which has a glass transition point below -40°C in an observed temperature range of -51°C to +71°C, and the support tube (3) is formed from a second material which does not have a glass transition point below +72°C.

A projectile and launcher include coil of wire and a control board, an energy storage means and a timing circuit for delaying separation of the projectile. The launcher permits adjustment the launch velocity of the barrel for achieving a particular level of charge of the projectile as it is inductively charged by a magnetic field. The control board may include sensors such as barometric, proximity, acoustic, infrared and the like. The initiation of the payload release can be as a result of inputs from such sensors in addition to low voltage or particular energy programming which may occur prior to launch. The launcher may also include a range finding means that can detect a distance to target.

The invention relates to a contact body (1) of a gun barrel breech with several contact needles (2, 3, 4), with an axially movable guide body (5) for receiving the several contact needles (2, 3, 4), wherein the contact needles (2, 3, 4) are arranged axially movable on the guide body (5), wherein the guide body (5) can be arranged or is arranged axially movable within a receptacle of the breech wedge. The wedge lock can be designed to be stable and at the same time a safe programming of the ammunition is ensured by the fact that the contact body (1) carries three contact needles (2, 3, 4).

This utility model proposes an electronic detonator assembly control system, including a housing, an injection hole, and a mounting bracket. An electric telescopic rod is mounted on the mounting bracket, and a T-shaped rod is mounted on the output end of the electric telescopic rod. A sleeve is fitted over the T-shaped rod. A sealing cover is fixedly mounted at the bottom of the mounting bracket. A partition divides the original injection hole into two parts. A measured amount of waterproof adhesive is injected using an injection head. The waterproof adhesive enters the waterproof cavity from one side, while the other side ensures air escapes. This makes the injection process more stable and efficient, while also preventing gas residue inside and reducing the defect rate. Furthermore, the partition is made of stainless steel with a smooth surface that does not adhere to the waterproof adhesive, allowing for repeated operation over a long period.

This invention provides a method for detecting abnormal ignition performance of electronic detonators. It can effectively analyze the ignition performance of electronic detonators, thereby screening for ignition anomalies and ensuring product qualification rate. The method includes the following steps: S1. After receiving an initiation signal, the ignition current data of the ignition circuit in the control module of the electronic detonator under test is collected, and a current discharge curve is obtained from the ignition current data; S2. Based on the current discharge curve, discharge parameters are obtained, and the cause of the ignition anomaly in the control module of the electronic detonator under test is determined by judging whether the discharge parameters meet the set requirements; wherein, the discharge parameters include, but are not limited to, peak ignition current, current discharge time, internal resistance of the ignition circuit, and ignition energy.

The application discloses a rock mass blasting vibration control method based on precise delay of digital electronic detonator, which comprises the following steps: S1, detecting the geological characteristics of the rock mass in the blasting area, establishing a blasting seismic wave propagation analysis model and analyzing the propagation law thereof; S2, according to the blasting seismic wave propagation law, optimizing the design of the blasting hole network layout and combining the characteristics of the digital electronic detonator to design the precise delay time between the holes and the rows; S3, according to the hole network layout and the precise delay time, building an initiation network based on the digital electronic detonator; S4, carrying out field trial blasting, and monitoring the blasting vibration parameters and the rock mass crushing effect in real time. The application controls the whole blasting process in six steps, accurately controls the blasting vibration, reduces the cumulative damage of the slope, takes into account the blasting effect and construction safety, is suitable for various complex rock masses, and has a wide application prospect.

The present disclosure relates to a cartridge (100) comprising a casing (110) arranged to house a propellant (120), a propellant ignition system (101) and at least part of a projectile (180); the propellant (120) arranged to, upon ignition, generate gas and heat in the casing (110), thereby applying force to the projectile (180); the propellant ignition system (101) comprising a rapid deflagration cord (140), RDC, wherein the RDC (140) extends through the propellant (120) and is arranged to, upon ignition, undergo deflagration and inject high temperature particles and / or gas into the propellant (120), thereby igniting at least part of the propellant (120) around the RDC (140); and the projectile (180) arranged to be launched from the cartridge (100) upon ignition of the propellant (120).

The present invention relates to a method for manufacturing a base piece for receiving a primer for a multi-part cartridge case, in which an extraction groove for engagement by a firearm ejector is formed before a receptacle for a case jacket of the multi-part cartridge case for receiving a projectile is formed, particularly by forming. The present invention also relates to a tool arrangement for manufacturing a base piece, a base piece, and a cartridge case.

This invention relates to the field of electronic detonator inspection, addressing the problem of high false detection rates in systems operating under high safety thresholds. Specifically, it is an electronic detonator assembly quality inspection system based on industrial vision technology. This invention constructs a multi-level verification process involving initial acquisition, preliminary judgment, secondary acquisition, and arbitration judgment. Without lowering the safety threshold, it effectively offsets transient environmental interference that may be encountered during a single acquisition, significantly reducing the false detection rate caused by occasional image quality issues. Furthermore, it can statistically analyze the final judgment, calculating not only the overall pass rate but also intelligently identifying the time and speed regions of defective product concentration by analyzing the qualified detonator sequence. This facilitates rapid location of equipment anomalies and process parameter imbalances. Finally, the system continuously optimizes its model as the data from the above processes accumulates, improving the system's intelligence level and long-term stability.

The application discloses a full-automatic electronic detonator production line, which comprises a conveying belt and a conveying carrier driven by the conveying belt, and further comprises an automatic wire winding and moving device, a wire end shaping device, a stripping and wire shaping device, a wire twisting device, an injection molding device, an inner sheath stripping device, a riveting device, a laser welding device, a base pipe loading bayonet device and a detonator packaging assembly which are sequentially arranged along one side of the conveying belt; a junction box lower cover assembling device and a junction box upper cover assembling device are sequentially arranged on the other side of the conveying belt, and the junction box lower cover assembling device and the junction box upper cover assembling device are both located between the stripping and wire shaping device and the detonator packaging assembly. The full-automatic electronic detonator production line can realize full-automatic production and packaging of electronic detonators, does not need manual assistance in the whole process, is beneficial to improving production efficiency and ensuring personal safety of workers.

The invention relates to the technical field of cross application of fuses and data fusion processing technologies, in particular to a data fusion method for intelligent GIF fuses of a patrol ammunition, which is based on data fusion of visible light, infrared, laser ranging and radio multi-dimensional information. Seeker detection and fuze detection are integrated into an intelligent GIF fuze detection integrated device of the patrolling bomb, a seeker detection sensor obtains image information of a target through a visible light sensor, an infrared sensor, a laser range finder and an optical detector, and the laser range finder provides remote accurate distance measurement of the target; the fuze adopts radio detection to provide accurate distance detection; the target image information of the visual channel is deeply fused with the target distance and speed information of the fuze channel, and the target information in a complex battlefield is acquired and sensed in real time, so that the sensing precision and damage efficiency of the patrolling bomb carrying the intelligent GIF fuze to the target are improved.

This invention discloses an electrically fired, high-range, residue-free bird-repelling projectile, relating to the field of bird-repelling projectile technology. The proposed scheme includes: a projectile casing; a high-pressure shield fixed to the bottom of the casing, forming a high-pressure chamber inside the shield, with vent holes on its surface; propellant filling the high-pressure chamber; a pressure-building pad positioned between the propellant and the inner wall of the high-pressure shield for initial pressure establishment; a primer fixed to the bottom of the high-pressure shield; an electric primer installed within the primer, its output portion contacting the propellant; and an acousto-optical device fixed to the upper part of the projectile casing, its bottom, the high-pressure shield, and the projectile casing forming a low-pressure chamber, which is connected to the high-pressure chamber. This high-low pressure firing structure, composed of the high-pressure shield, pressure-building pad, vent holes, and low-pressure chamber, allows the propellant to fully combust and build pressure in the high-pressure chamber before being depressurized through the vent holes to the low-pressure chamber, uniformly propelling the acousto-optical device and improving propellant utilization and vertical range.

The header of an EED is redesigned to increase stiction forces to better hold the main charge throughout deflagration. The header includes a main charge holder, integrally formed or as a discrete component, that has internal structure that is press fit to a complementary outer surface of the main charge. The contact area between the internal structure and the main charge being greater than the contact area between a cylinder that circumscribes the internal structure (the uniform cylindrical shape of a typical EED contact area of π*D*L) to increase stiction forces between the main charge holder and the main charge. For a given diameter and length, the inclusion of the internal structure will reduce the mass of the main charge.

The present application relates to a kind of in-line safety actuator multi-point synchronous initiation system, belong to safety actuator technical field, solve the problem of poor safety, reliability, synchronism and relatively large volume and weight in prior art multi-point synchronous initiation system.The system includes electronic insurance module for according to the control signal of the first and second level insurance that the controller module sends is received, the first and second level insurance is released;Pressure module is used for according to the control signal of the third level insurance that the controller module sends is received, the third level insurance is released, and voltage is applied to each initiation module after the third level insurance is released;Initiation module is used for high voltage charging based on the voltage applied by pressure module, and high voltage charging state signal is fed back to the controller module;Controller module is also used for according to the initiation instruction and high voltage charging state signal received, generates the initiation control signal of each initiation module;Initiation module is also used for according to the initiation control signal received, detonation.

The application provides a protection circuit, system and control method of an electronic detonator system, and the protection circuit comprises a control unit, a protection unit, an energy storage unit and a bridge wire unit, the first end of the bridge wire unit is connected with the first end of the protection unit and the first end of the energy storage unit respectively, the second end of the energy storage unit is grounded, the second end of the protection unit is connected with the first output end of the control unit, the third end of the protection unit is grounded, and the second output end of the control unit is connected with the second end of the bridge wire unit. The protection unit comprises a protection resistor and a protection diode, the first end of the protection resistor serves as the first end of the protection unit, and the second end of the protection resistor serves as the second end of the protection unit. The negative electrode of the protection diode is connected with the first end of the protection resistor or the second end of the protection resistor, the positive electrode of the protection diode is grounded, the resistance value of the protection resistor is 100Ω-1000Ω, and the protection diode is a TVS tube with a working voltage of 24V.