66results about "Blasting cartridges" patented technology

The utility model discloses a directional energy releasing type segmented carbon dioxide fracturing device relates to carbon dioxide fracturing device technical field, the utility model discloses a pipe body, directional energy releasing component and buffer protection subassembly are connected to the fixed bottom of pipe body with the exhaust grid pipe, and the both sides between pipe body inner chamber are fixed with the energy releasing board of connecting. The utility model discloses a directional energy releasing component, utilizes the directional intercommunication structure of adjusting pipe and exhaust hood, and the meshing limit function of cooperation locking mechanism makes high pressure carbon dioxide gas by adjusting pipe's air inlet opening introduction, along exhaust hood's preset direction concentrated injection subsequently, forms controllable energy release path, and effectively solved the energy dispersion problem that traditional device energy releasing direction is incontrollable, and the meshing locking structure of positioning gear ring and fixed gear ring can accurate fixed to the rotation angle of adjusting pipe, and the pointer mark of combination turntable realizes the quick adjustment and stable positioning of exhaust hood orientation.

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 utility model discloses a high-pressure gas segmented blasting generating device, relating to the field of blasting engineering technology. The utility model includes a liquid storage cylinder, a plug on one side of the liquid storage cylinder, a controller on one side of the plug, an excitation tube on one side of the controller, a positioning component on one side of the surface of the liquid storage cylinder, and an expansion tube at the end of the liquid storage cylinder away from the plug. The positioning component includes a slot formed on the surface of the liquid storage cylinder. This utility model can adapt to blasting holes of different sizes. When the blasting hole is large, the mounting sleeve can be moved to insert the clamping plate into the slot on the surface of the liquid storage cylinder. Then, the device is inserted into the blasting hole, and the threaded tube is rotated. It rotates on the screw surface and moves axially, driving the abutting arc plates to move, so that the two abutting arc plates respectively abut against the inner wall of the blasting hole, thereby firmly fixing the blasting generating device inside the blasting hole.

A gas generator includes a cup where a gas generating agent is accommodated and a holder. The holder includes a first recessed portion and an annular groove provided in an end surface on a side facing the cup, a second recessed portion provided in an end surface on an opposite side, and a partition between the first and second recessed portions. A bottom surface of the first recessed portion includes a first and second bottom surface located on a side of the second recessed portion. The gas generator satisfies A<B<C, where A represents a distance from the second bottom surface to a bottom surface of the second recessed portion, B represents a distance from the first bottom surface to the bottom surface of the second recessed portion, and C represents a distance from the bottom surface of the second recessed portion to the annular groove.

The invention relates to a detonating device for initiating an explosive material, comprising: - a cathode (2); - means (4) for concentrating an incoming electron beam (5) generated by the cathode and for generating an outgoing electron beam (20) having a current density greater than the current density of the incoming electron beam; - means (14) for accelerating the outgoing electron flow. Figure 1

A stereoscopic arch ignitor resistor and manufacturing method thereof are provided. The stereoscopic arch ignitor resistor includes a substrate, an alloy layer, a combustible material accommodating portion, and a lateral conductive layer. The alloy layer is disposed on a first surface of the substrate. The alloy layer includes an arch lead, a first connecting portion, and a second connecting portion. The combustible material accommodating portion is positioned between the arched lead and the substrate. The arch lead defines a volume of combustible material of the combustible material accommodating portion. The lateral conductive layer is disposed on the alloy layer. The lateral conductive layer abuts against a side surface of the substrate. The stereoscopic arch-type ignition resistance element is configured to reduce ignition distance and / or increase contact area with combustible material.

To provide an electric ignition tool for firework which inhibits flame from extending far behind the ignition tool upon ignition of the electric ignition tool, and has an improved inflammation character with respect to an explosive device for inflammation and a blasting-off explosive.SOLUTION: An electric ignition tool for firework is fixed on an inflammation explosive device for ignition or fixed directly on a blasting-off explosive, so as to be used for igniting the firework, and comprises: an igniter holding cylindrical body made from a resin material or a rubber material; igniter in a powder or particle state; and a plug with a bridge circuit, which plugs the igniter holding cylindrical body to transmit ignition energy, and through which a lead wire is disposed. Therein: the igniter holding cylindrical body is fixed on the plug with the electric circuit such that the electric circuit and the igniter contact closely, the igniter holding cylindrical body has a structure being bottomed with a vicinity of a bottom plate part and / or a peripheral side wall part being caused to explode by an ignition power; the igniter is a composition including metal oxide, a single metal reductant agent, and boron.SELECTED DRAWING: Figure 2

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 utility model discloses a high security liquid oxygen blasting device, including a plurality of liquid oxygen explosion pipe, each liquid oxygen explosion pipe all is installed with branch line, a plurality of branch line common installation has main line, the end of main line is installed with two plug -in post, one side of two plug -in post common is equipped with detonator, the top of detonator is installed with protective cover, be equipped with limiting mechanism on the protective cover, be equipped with four adjusting mechanism on the protective cover, the outer wall fixed connection of detonator has two C type handle that is symmetrically set, install rotary button on detonator, be equipped with two insertion slot on detonator, two plug -in post all cooperate with insertion slot. The utility model discloses through the setting of protective cover and its limiting mechanism, can reliably isolate sundries, greatly promote operation security, the adjusting mechanism on protective cover can adjust support leg height flexibly, make control equipment also can keep level on the uneven ground, be convenient for staff operation.

The utility model discloses a continuous charge structure based on blasting technique, including precharge device, the utility model discloses a precharge device has been set up, through the explosive roll filling is put into the inside of blasting cylinder main part, finally, the blasting cable is led out from the outlet, and the use blasting cylinder main part can assemble the explosive roll in advance and then insert into the blast hole, avoid the scattered explosive roll and get stuck somewhere inside the blast hole, ensure that the explosive roll is filled in place in the blast hole once, improve the charge operation efficiency, through setting up the compacting structure in the inside of upper cylinder section, after the explosive roll and blasting cylinder main part are filled, hold the handle and rotate the screw base into the inside of upper cylinder section and with internal thread rotation joint, the pressing plate passes through the upper cylinder section and inserts into the inside of extension section and carries out the explosive roll that is tightly packed and is filled, avoid the explosive roll and move in the blasting cylinder main part, and the explosive roll is not detonated in the specified position in the blast hole.

An assembly (1) with at least one electrical feedthrough (2) comprises a body (10) with an opening (12) through which an electrical conductor (16) is held in electrical insulation from the body by a fixing material (14) which closes the opening. The surface of the conductor not covered by the material is wholly provided with a first coating (20), the surface of the conductor covered by the material is free of the first coating; the surface of the body not covered by the material is free of the first coating, optionally provided with a second coating different from the first coating. Alternatively, the surface of the body not covered by the material is wholly provided with the first coating, the surface of the body covered by the material is free of the first coating; the surface of the conductor not covered by the material is free of the first coating, optionally provided with a second coating (30) different from the first coating. The first coating has one or more layers, at least the outermost layer being a layer of electroless deposition of the first coating material.

This invention discloses a liquid oxygen-nitrogen composite phase change rock-fracture device and method for use in cold-climate mines, relating to the field of mining and blasting engineering technology. It includes a first storage tube with a partition plate installed on its inner wall, and an energy storage tube located on one side of the partition plate on the inner wall of the first storage tube. This liquid oxygen-nitrogen composite phase change rock-fracture device and method for cold-climate mines effectively blocks heat conduction from the external cold environment to the energy storage tube by filling the hollow area with vacuum insulation material or maintaining a vacuum state, significantly reducing the evaporation loss of the liquid oxygen-nitrogen mixture. Simultaneously, by inserting one end of the input pipe into the bottom of the absorbent, and cooperating with the shut-off valve on the exhaust pipe, the mixture is allowed to permeate upwards from the bottom of the absorbent and completely expel air from the energy storage tube. This achieves the effect of maintaining the mixture in a liquid state for a long time in cold-climate environments, with no air residue after injection, and a stable and reliable phase change reaction.

The utility model relates to the technical field of rock fracturing device, especially to a hole liquid filling fracturing device of convenient combination support, including plastic soft belt, liquid absorption filler filled in the inboard of plastic soft belt, liquid inlet pipe installed in the middle part of plastic soft belt, exhaust pipe fixed on the right side of plastic soft belt upper end and with plastic soft belt inside intercommunication and electronic match head installed on the left side of plastic soft belt upper end and the ignition head part extends to the inboard of liquid absorption filler, the outside of plastic soft belt is provided with adjustable type support mechanism for the tool convenient support fixed of different outer diameter plastic soft belt exemption. The utility model can be applicable to the tool free adjustment support fixed operation of different outer diameter liquid filling fracturing device, effectively reduces the stress shaking, deviation, falling or difficult installation and so on of support structure after installation, thereby improves the convenience, stability and applicability of liquid filling fracturing device support protection.

The present invention provides an assembly (200) for locating an antenna (101) of a wireless initiation device (102), the assembly including a charge arm (121) and a charge hose (116), wherein the charge arm (121) is configured to insert a positioning device (100) into a borehole (106) and guide the charge hose (116) into the borehole (106) with an explosive charge. The charge hose (116) is conveyed by the positioning device (100) and provides an explosive charge (123) into the borehole (106), and then, after the explosive charge is provided into the borehole (106), the charge hose (116) is withdrawn away from the borehole (106) through an elongated tube (107) of the positioning device (100). Additionally, the assembly positions the positioning device (100) within the opening (124) of the borehole (106) and advantageously positions or guides the antenna (101) toward the launcher (113) substantially away from the rock face of the borehole. Advantageously, the assembly performs all these steps in one and the same back-and-forth movement of the propellant arm (121) or the propellant hose (116).

The utility model discloses a kind of dismounting and connecting device for waterborne electronic detonator driver and waterborne electronic detonator initiation control system belong to pyrotechnics initiation control technical field.The bottom of waterborne electronic detonator driver is equipped with stop bump for installation by stop limit, stop bump is protruded to outside relative to the bottom of waterborne electronic detonator driver, and the dismounting and connecting device for waterborne electronic detonator driver includes: support structure, support structure is equipped with support portion for supporting the bottom of waterborne electronic detonator driver;Locking limiting mechanism, installed on support structure, locking limiting mechanism can lock stop bump on support structure, and locking limiting mechanism can limit the bottom of waterborne electronic detonator driver supported by support portion on support portion.The utility model is convenient for the dismounting and connecting device for waterborne electronic detonator driver to dismount waterborne electronic detonator driver.

The application relates to the technical field of emulsion explosive, in particular to a mixed loading emulsion explosive vehicle loading auxiliary device, which comprises a loading pipe, an emulsion explosive separation component and a medicine injection pipe. The bottom of the loading pipe is provided with a sealing cover, and a limiting groove is arranged on the inner side wall of the loading pipe. The mixed loading emulsion explosive vehicle loading auxiliary device is composed of the loading pipe, the emulsion explosive separation component and the medicine injection pipe. The limiting groove is arranged on the inner side wall of the loading pipe, and the emulsion explosive separation component is composed of a limiting ring, a separation film, a connecting rope and a pulling rope. The separation film separates the emulsion explosive in the loading pipe, so that the substances in the emulsion explosive are not excessively stratified during foaming, the substances can be better distributed, and the final detonation effect of the emulsion explosive is effectively ensured.

The utility model discloses a kind of explosion foils for in-line initiator, belong to pyrotechnics technical field, including ceramic substrate (1), metal bridge foil (2) and pin (6), the metal bridge foil (2) is set in the front of ceramic substrate (1), the ceramic substrate (1) and two pins (6) are welded on the back of ceramic substrate (1) by soldering tin (5), two through holes are provided in the position corresponding to the welding of two pins (6) of the ceramic substrate (1), metal powder (3) is filled in the through hole, metal plating (4) is further provided between the soldering tin (5) and ceramic substrate (1);The explosion foil of the utility model is relative to prior art, volume reduces more than 40%, manufacturing cost reduces more than 60%.

The utility model discloses an electronic detonator water networking detonation control system belongs to the pyrotechnics detonation control technical field. Electronic detonator water networking detonation control system includes: waterborne load float, for floating and placing on the water surface, waterborne electronic detonator driver, installs waterborne load float, is equipped with the bus connector for being used for with control bus connection on waterborne electronic detonator driver, control bus, is equipped with at least a pair, at least a pair control bus is connected on bus connector, and at least a pair control bus is away from the one end of bus connector and is put into underwater, electronic detonator, is equipped with multiple, and multiple electronic detonator is connected on the one end of at least a pair control bus away from bus connector and is put into underwater, electronic detonator initiator, electronic detonator initiator and waterborne electronic detonator driver communication connection. The utility model discloses an electronic detonator water networking detonation control system is favorable to improving the reliability and stability of underwater blasting operation.

This invention relates to the field of coal mining technology, and particularly to a coal mine roof cutting and pressure relief device and its assembly method. The device includes a top pipe, a middle pipe, and a bottom pipe arranged sequentially from top to bottom. The bottom of the top pipe is connected to the top of the middle pipe via a top pipe bottom transition cap, and the bottom of the middle pipe is connected to the top of the bottom pipe via a middle pipe bottom transition cap. The top of the top pipe is provided with a top pipe cap, and a first detonation mechanism is installed inside the top pipe. The top of the middle pipe is provided with a middle pipe cap, and a second detonation mechanism is installed inside the middle pipe, electrically connected to the first detonation mechanism. The top of the bottom pipe is provided with a bottom pipe cap, and a bottom pipe bottom cap is provided at the bottom of the bottom pipe, a third detonation mechanism is installed inside the bottom pipe, electrically connected to the second detonation mechanism. All three pipes contain explosives.

An assembly with an electric feedthrough is provided, including a main body having an opening, through which an electric conductor is passed and held with a fixing material. The electric conductor surface not covered by the fixing material has a first coating while the surface covered by the fixing material lacks the first coating. The main body surface uncovered by the fixing material omits the first coating and optionally has a second coating, different from the first coating, or is provided completely with the first coating. The main body surface covered by the fixing material lacks the first coating, and the electric conductor surface uncovered by the fixing material lacks the first coating and is optionally provided with a second coating, different from the first coating. The first coating has one or more layers, and the outermost layer is an electrolessly deposited layer of a first coating material.

This utility model discloses a segmented carbon dioxide gas expansion blasting device, relating to the field of blasting engineering technology. The utility model includes a first liquid storage pipe and a second liquid storage pipe. A controller is installed on one side of the inner cavity of both the first and second liquid storage pipes, and an excitation tube is installed on one side of the controller. A connecting assembly is provided between the first and second liquid storage pipes, and connectors are provided at both ends of both the first and second liquid storage pipes. In use, multiple sets of expansion blasting devices can be transported to the blasting point. By rotating the connecting plate, a locking block is inserted into the inner cavity of the connecting frame, and the locking block is fixed to the connecting frame using fixing bolts, thus completing the connection of the first and second liquid storage pipes. Subsequent connections are made in the same way. This connection method is simple to operate and allows for flexible connection of multiple devices into an expansion blasting device of a specified length according to actual blasting needs.

An assembly (7) for triggering an explosive in a hole (9) to produce an explosive blast in the hole includes (a) an explosion trigger (15, 19) for triggering the explosive in the hole, (b) a detonation unit body (21) that is configured to be located at or proximate an open end of the hole in an initial position of the assembly in the hole and (c) a trigger cord (31) that is connected to the detonation unit body and to the explosion trigger.

A gas generator (1) is provided with a metal-made case main body (10), a retainer assembly (20), and an igniter (40). The retainer assembly (20) has a metal-made retainer portion (20A) that holds the igniter (40), and a resin-made connector portion (20B) that can receive a connector connected to a terminal pin (43) of the igniter (40). The retainer portion (20A) includes a cylindrical first body portion (21) and a ring-shaped protruding portion (22) that protrudes from the first body portion (21), and the connector portion (20B) includes a cylindrical second body portion (24) and a cylindrical portion (25) that is provided so as to extend from the second body portion (24). The cylindrical portion (25) is inserted in the case main body (10) and is externally inserted in the first body portion (21), a gap between the case main body (10) and the first body portion (21) is closed by the case main body (10) being reduced in diameter at a portion corresponding to the cylindrical portion (25), and the case main body (10) and the first body portion (21) being sandwiched and compressed by the reduced-diameter portion of the case main body (10) and the first body portion (21).

A data recorder is in operative communication with a sensor. The data recorder records both data that is internal to the data recorder and external to the data recorder. The data that is external to the data recorder includes a state status of the sensor. The data that is external to the data recorder is merged into a data stream with the data that is internal to the recorder. The data recorder enables the determination of, amongst other things, whether an Electronic Thermal Battery Initiator (ETBI) initiated its firing pin after detecting a valid launch condition of a test projectile within a required time frame. The timing data from the data record assembly can be verified to ensure that the ETBI has properly initiated. The test projectile may be a modular projectile to allow easy modular installation of the data recorder as a modular component of the test projectile.

This utility model discloses a waterborne electronic detonator drive control device and a waterborne electronic detonator initiation control system, belonging to the field of pyrotechnic initiation control technology. The waterborne electronic detonator drive control device includes: a waterborne carrier float for floating on the water surface; and a waterborne electronic detonator driver installed on the waterborne carrier float. The waterborne electronic detonator driver is equipped with a bus connector for connecting to a control bus. When the waterborne carrier float with the waterborne electronic detonator driver is placed on the water surface, the waterborne electronic detonator driver and the bus connector are both exposed above the water surface. In this utility model, the waterborne electronic detonator drive control device can control the waterborne electronic detonator driver via an electronic detonator initiator, and then control the multiple electronic detonators connected to each pair of control busbars, which helps improve the reliability and stability of underwater blasting operations.

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.