186 results about "Electric ignition" patented technology

The invention discloses an anti-static flexible fracturing rock breaking pipe based on a conductive oxygenating conduit, which comprises a flexible outer sleeve film with two closed ends and filled with an adsorbing material combustion agent, and further comprises the conductive oxygenating conduit penetrating into the flexible outer sleeve film from the top of the flexible outer sleeve film, an excitation wire and an exhaust pipe, the excitation wire is connected with an electric ignition device, and the electric ignition device is positioned in the flexible outer sleeve film and is in contact with the adsorption material combustion agent; the outer wall of the conductive oxygenation conduit is connected with a conductive unit. The invention further discloses a rock breaking method using the anti-static flexible fracturing rock breaking pipe based on the conductive oxygenating guide pipe, the conductive unit is arranged on the conductive oxygenating guide pipe and makes contact with the ground for conduction, static electricity generated in the filling process of liquid oxygen or pressurized high-purity liquid oxygen can be guided out and eliminated, and the anti-static flexible fracturing rock breaking pipe based on the conductive oxygenating guide pipe can be used for breaking rocks. Static electricity generated in the filling process of liquid oxygen or high-purity liquid oxygen with pressure can be conducted away and eliminated more efficiently, timely and continuously, and the risk of safety accidents caused by the static electricity is greatly reduced.

The invention relates to the technical field of energy distribution, and discloses an energy distribution method and device of a hybrid power distribution system and the hybrid power distribution system.The method comprises the steps that the power-on ignition state of a vehicle, the charge states of a 48V storage battery and a 12V storage battery and the power load of a load end are obtained; determining the current hybrid power distribution management strategy as a quiescent current management strategy, a power management strategy or a load level-to-level management strategy according to the power-on ignition state of the vehicle; and based on the current hybrid power distribution management strategy, adjusting the power supply modes of the DCDC, the 48V storage battery and the 12V storage battery to the load end according to the charge state and the power load, and performing hierarchical dynamic management on the load end. According to the invention, a comprehensive power supply strategy of hierarchical energy distribution management, load hierarchical dynamic adjustment and static current management can be established, the power supply mode is accurately and flexibly adjusted, the load is flexibly controlled, and stable power supply is provided for the load, so that the power consumption of the whole vehicle is finely adjusted and reduced, and the optimal utilization of the energy of the whole vehicle is realized.

The utility model discloses a perfluorohexanone fire extinguishing device used in a battery box, which comprises an outer shell and an inner shell arranged in the outer shell, a perfluorohexanone fire extinguishing agent is arranged in the outer shell, a gas generating agent is arranged in the inner shell, one end of the outer shell is provided with a nozzle end cover, the gas generating agent is in contact with an electric ignition head, and the electric ignition head is in contact with the nozzle end cover. The electric ignition head is connected with the output end of the piezoelectric ceramic through a starting line, an impact piece is arranged on one side of the piezoelectric ceramic and connected with one end of a fusible metal rod through a pull rod, a spring is arranged between the impact piece and the end of the inner shell, and the other end of the fusible metal rod is connected with a fixing part on the surface of the battery box. According to the perfluorohexanone fire extinguishing device, the structure that the fusible metal rod, the impact piece, the piezoelectric ceramic and other parts are matched is designed, so that the problem of starting failure caused by the fact that a traditional thermosensitive wire is prone to aging and failure in a complex environment in a battery is effectively solved, and the starting efficiency and the starting success rate of the perfluorohexanone fire extinguishing device are greatly improved.

The invention discloses an ignition powder composition capable of preventing mistaken combustion and a preparation method and application thereof.The ignition powder composition capable of preventing mistaken combustion is prepared from, by weight, 30-75 parts of metal fuel particles, 8-35 parts of copper oxide, 5-25 parts of ammonium phosphate and 3-18 parts of coating agent.The application of the ignition powder composition capable of preventing mistaken combustion comprises the following steps that 1, the ignition powder composition capable of preventing mistaken combustion is prepared from, by weight, 30-75 parts of metal fuel particles, 8-35 parts of copper oxide, 5-25 parts of ammonium phosphate and 3-18 parts of coating agent; and at least one of an electric igniter or a chemical activating agent needs to be matched for use. The coated magnesium powder is used as metal fuel particles, and components such as copper oxide and ammonium phosphate are matched with the coated magnesium powder to jointly perform oxidation-reduction reaction; the pyrophoric powder composition can be ignited only by being matched with an electric igniter or a chemical activating agent, mistaken combustion caused by external factors or improper manual operation is avoided, and the pyrophoric powder composition is particularly suitable for occasions with high safety requirements such as industrial high-temperature welding ignition devices, petroleum drilling engineering or firework delayed ignition devices.

The invention discloses an energy-saving commercial electric stove, and relates to the technical field of kitchen utensils. The cooking stove comprises a stove body, a burning groove is formed in the center of the top of the stove body, a supporting assembly is arranged on the outer side of the burning groove in the top of the stove body, the supporting assembly is used for supporting cookware and is conveniently suitable for cookware of different sizes, and an electric fire assembly is arranged in the burning groove in the top of the stove body and is used for heating the cookware of different sizes. The electric fire assembly is used for achieving electric fire and can adjust distribution of flames, and a gear disc is rotationally connected to the center of the interior of the stove body in a limited mode. According to the cooker, gathering and dispersing adjustment can be conducted on flames according to the sizes of cookware and the requirements for different cooking temperatures, then the combustion efficiency of the flames is improved, the better energy-saving effect is achieved, meanwhile, the supporting blocks can be conveniently and movably adjusted in the mode that the supporting blocks contract inwards or expand outwards, the cooker is suitable for the cookware of different sizes, and the practicability is high. The practicability of the electric stove is improved.

The invention relates to the technical field of ring main unit engineering, in particular to a state evaluation method and system for a gas insulation environment-friendly ring main unit, and the method comprises the steps: obtaining space probe distribution coordinates and gas concentration data in the environment-friendly ring main unit, and generating a leakage gas three-dimensional concentration matrix according to the leakage gas three-dimensional concentration matrix; constructing a gas concentration distribution prediction model matched with the environment-friendly ring main unit, inputting the leakage gas three-dimensional concentration matrix and the geometric parameters of the cabinet body into the gas concentration distribution prediction model, and outputting to obtain predicted gas concentration distribution; generating a gas leakage behavior parameter, and generating an insulation failure probability and an electric ignition risk index; and generating an insulation performance evaluation index, and generating state evaluation of the environment-friendly ring main unit according to the insulation performance evaluation index. According to the method, the gas leakage behavior is accurately simulated, so that the insulation failure probability and the electric ignition risk index are quantified, and the accuracy of state evaluation of the ring main unit is greatly improved.

The utility model discloses a guide cylinder structure adopting a blasting deicing mode, and relates to the technical field of blasting deicing, a detonation filler is arranged in a blasting guide cylinder, an electric ignition structure is provided with an ignition structure corresponding to the detonation filler, and a lower buffer protection pad is installed at the position, corresponding to a blasting assembly, of a lower clamping frame. And a V-shaped groove is formed in the lower buffer protection pad. According to the blasting deicing principle, based on a high-strength blasting guide cylinder, impact force instantly released during combustion of detonation filler serves as source power for vibration deicing of the overhead cable, a lower buffering protection pad serves as a primary protection structure of the overhead cable, and particularly, a V-shaped groove is obtained through optimization and improvement in the lower buffering protection pad; the blasting guide cylinder is used for fully clamping the overhead cable, and the key point is that a staggered clamping position between the blasting guide cylinder and the overhead cable is used for avoiding direct damage to the overhead cable caused by blasting impact force on one hand, facilitating the separation process between the blasting guide cylinder and the overhead cable on the other hand, and particularly improving the deicing efficiency.

The invention provides a torpedo anchor and a using method thereof, and relates to the technical field of anchoring equipment.The torpedo anchor comprises an anchor body, an anchor head, an expandable air bag and an electric control igniter, the anchor body comprises a plurality of sub anchor bodies which are sequentially arranged in a nested mode, and a containing space is formed between top plates of any two mutually-nested sub anchor bodies; the anchor head is fixedly connected with the bottom of the sub anchor body on the innermost layer; an explosive medicament is placed in the inflatable air bag; an inflatable air bag is arranged in the accommodating space; the electric control igniter is used for igniting the medicament; the length of the torpedo anchor penetrating into the stratum is increased through an air bag expansion impact method, then the contact area and friction force of the torpedo anchor and the stratum are increased, the uplift bearing capacity of the torpedo anchor is remarkably improved, all the sub anchor bodies are simple in matching structure and high in stability, complex mechanical structures are not needed, and the cost is low. Therefore, on the premise that the torpedo anchor extends in a bottom layer, the torpedo anchor still has good stability.

The invention provides a high-frequency high-low-voltage composite pulse plasma power supply device, which adopts a composite pulse control mode of high-voltage ignition and low-voltage holding current, and comprises a high-voltage direct-current circuit for providing voltage for enabling a plasma reactor to react; the first all-solid-state switch is used for outputting the high-voltage direct-current circuit in a pulse form to form high-voltage and high-frequency pulse electricity; the first one-way conduction circuit is used for conducting the high-voltage and high-frequency pulse electricity in a one-way mode and blocking current injection of the low-voltage side at the same time; the low-voltage direct-current circuit is used for providing voltage for maintaining arc in the plasma reactor for a period of time; the second all-solid-state switch is used for outputting the low-voltage direct-current circuit in a pulse form to form low-voltage high-frequency pulse electricity; the second one-way conduction circuit is used for conducting the low-voltage high-frequency pulse electricity in a one-way manner and blocking the current injection of the high-voltage side at the same time; and the plasma reactor is used for performing plasma reaction through high-voltage high-frequency pulse electric ignition and low-voltage high-frequency pulse electric maintenance arc state.

The utility model discloses a perfluorohexanone fire extinguishing device with a nozzle shielding floating body, which comprises an outer shell and an inner shell arranged in the outer shell, a perfluorohexanone fire extinguishing agent is arranged in the outer shell, a gas generating agent is arranged in the inner shell, one end of the outer shell is provided with a nozzle end cover, the gas generating agent is contacted with an electric ignition head, and the nozzle shielding floating body is arranged in the nozzle end cover. The electric ignition head is connected with the starting component, and a shielding floating body floating on the liquid level of the perfluorohexanone fire extinguishing agent is arranged in the area close to the nozzle end cover. After the shielding floating body is arranged, the upper side of the nozzle can be shielded, and in the liquid level descending process, gas cannot directly cross the perfluorohexanone fire extinguishing agent to escape from the nozzle, so that the gas can always push the perfluorohexanone fire extinguishing agent to be sprayed out from the nozzle. The process can greatly reduce the liquid residual rate of the perfluorohexanone fire extinguishing agent.

The utility model discloses a piezoelectric igniter and a lighter and an ignition gun using the piezoelectric igniter, and the piezoelectric igniter comprises a shell, an operating piece, an impacting piece and a first elastic piece, the impact piece comprises an impact block which is provided with a mounting hole extending transversely; the limiting transverse pin is movably arranged in the mounting hole and can move in the length direction of the mounting hole; the operating piece is stressed to enable the impact piece to have at least two states. A first elastic piece is arranged on the impact piece, when the impact piece moves downwards, the impact piece possibly slightly swings in the transverse direction, the end of the limiting transverse pin in the length direction possibly rubs against the inner side wall of the containing cavity of the shell, the limiting transverse pin is arranged to be capable of moving in the length direction of the impact block installation hole, and therefore the position of the limiting transverse pin can be finely adjusted; therefore, when a user presses the operation piece, the resistance is small, the hand feeling is light, and the structure is reasonable and practical.

1. The name of the design product: fireworks electric ignition main controller. 2. The use of the design product: fireworks electric ignition main controller. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

This invention discloses a coaxial rotor artillery-launched fireworks drone system, comprising an onboard shell, a drone, and a foldable fireworks guiding and launching system. The onboard shell mainly includes a projectile body, a tail, and a wind cap. The projectile body and tail are connected by a fixing mechanism, which includes a shell ejection mechanism that can eject and separate the shell upon receiving a separation signal. The drone and the foldable fireworks guiding and launching system are arranged in a folded state and placed inside the projectile body. The drone consists of a foldable nose and a fuselage. The foldable fireworks guiding and launching system consists of a guideable fireworks launching device and an airborne fireworks launching frame. The airborne fireworks launching frame includes a fireworks launching tube and a foldable cross connecting rod. The fireworks launching tube is connected to the drone through the foldable cross connecting rod and contains fireworks projectiles and propellant. The drone carries the fireworks into the air, which are remotely controlled and ignited and launched using electric ignition.

The application belongs to the technical field of electric initiation, and particularly relates to an electric ignition device with a redundant ignition structure. The electric ignition device comprises an electrode plug body made of ceramic material, two cylindrical charge chambers which are independent and symmetrical about the axis of the electrode plug body are arranged on the electrode plug body, the two charge chambers are separated by ceramic, the charge chambers can completely wrap the charge in the ceramic of the electrode plug body and are only open at the top, each charge chamber is provided with a pin, a metallized layer on the bottom surface of the electrode plug body is in conduction with each group of pins, a thermistor NTC is arranged between the two metallized layers, and an electrostatic discharge tip air gap is arranged between the metallized layer and the outer circle of the electrode plug body. Under high-voltage electrostatic, the discharge position between the bridge circuit of the electric ignition device and the metal shell is converted to the bottom surface of the electrode plug. The application improves the ignition reliability, solves the problem of electrostatic ignition between the independent charge chambers, and can be adapted to various electric primers with a diameter not less than 8.7 mm and a height not less than 10.7 mm.

The utility model discloses a lighter similar to a diesel engine, which comprises a protective shell, decorating parts are arranged on the front surface, the rear surface and the right surface of the protective shell, a bearing is fixedly connected to the surface of the decorating part on the rear surface of the protective shell, a gyro wheel is rotatably connected to the surface of the bearing, and a fire outlet pipe is fixedly connected to the left surface of the protective shell. A fire behavior limiting cover and a shell sealing cover are arranged at the upper end of the fire outlet pipe and the upper end of the protective shell correspondingly, a button is arranged on the surface of the shell sealing cover, a fuel storage box and an electric igniter are arranged in the protective shell, a valve is arranged on the right surface of the fuel storage box, and a right-angle guide pipe is arranged in the valve. The output end of the electric igniter and the surface of the right-angle guide pipe are provided with a power line and a rubber sleeve correspondingly, and the upper surface of the valve is rotationally connected with a winding rod. By means of the structure, the compactness of internal components of the lighter is improved, and a user can conveniently replace a power line of a fire outlet area.

A preparation method of a clean aluminum-vanadium alloy based on external electric ignition comprises the following steps that vanadium pentoxide, vanadium trioxide, metal aluminum and ammonium fluoride are mixed, ultrasonic treatment is conducted, and then vacuum treatment is conducted; and adding the obtained mixture into a preheated reactor, electrifying and igniting for reaction, and performing aging treatment after the reaction is completed, so as to obtain an aluminum-vanadium alloy product. According to the aluminum-vanadium alloy, the mass percentage of V is larger than or equal to 80%; the sum of the mass percentages of C, Si, Fe, P, S, B, O, N, H and unavoidable impurities is smaller than or equal to 0.2%.

The utility model relates to the technical field of side electrode spark plugs, in particular to a semi-edge surface multi-side electrode spark plug which comprises a threaded sleeve seat, a central electrode is arranged in the center of the top of the threaded sleeve seat, one side of the top of the threaded sleeve seat is fixedly connected with an arc-shaped side cover, and the top end of the arc-shaped side cover is fixedly connected with an arc-shaped top cover. The top end of the inner wall of the arc-shaped side cover is fixedly connected with an installation arc seat, and the bottom of the installation arc seat is provided with an arc-shaped multi-side electrode. According to the semi-edge surface multi-side electrode ignition device, the threaded sleeve seat, the central electrode, the arc-shaped side cover, the arc-shaped top cover, the mounting arc seat, the arc-shaped multi-side electrode, the screw cap and the electrifying sleeve seat are arranged, so that the semi-edge surface multi-side electrode ignition operation can be more accurately and stably performed by equipment; a worker firstly carries out fixed installation operation on the whole equipment needing to be used through a threaded sleeve seat, so that a central electrode at one end, an arc-shaped side cover and an arc-shaped top cover are screwed and installed at an electric ignition position of an engine.

The utility model discloses a kind of micro high-output capacity's insensitive electric ignition tube, belong to the technical field of pyrotechnics, including shell (1), in the shell (1) from below to above sequentially provided with insulating sheet (8), electrostatic discharge ring (7) and electrode plug (6), the two pins (61) of the electrode plug (6) from the lower end of shell (1) stretch out shell (1) outside, the upper end surface of the electrode plug (6) is provided with bridge wire (5), the bridge wire (5) is communicated with two pins (61), the upper end surface of electrode plug (6) is provided with charge ring (4), in the charge ring (4) is provided with ignition powder (3), in the upper end surface of the ignition powder (3) is provided with cover sheet (2);The utility model makes the insensitive scheme that satisfies in GJB344A-2020 under the size frame as small as possible, simultaneously has enough big output capacity.

The application provides a fixed installation tray and system for electric resistance measurement of an electric igniter, a plurality of parallelly arranged electric igniter installation slots are arranged in the tray body, a plurality of parallelly arranged wire installation slots are arranged in the tray body, and two wire installation slots are arranged corresponding to each electric igniter installation slot; an electric igniter fixing device is arranged in each electric igniter installation slot, and a wire fixing device is arranged in each wire installation slot. The fixed installation tray has a reasonable overall structure, can conveniently and stably fix the electric igniter to be detected, and can clamp and fix the wire of the electric igniter to be detected, so as to meet the requirement of electric resistance measurement of the electric igniter to be detected. The realization of automatic operation and measurement of the electric resistance of the electric igniter to be detected is facilitated, the accident rate is reduced, and the possibility of personal injury of workers is reduced.

The application discloses an environment-friendly bird repelling bomb device with an electromagnetic conductive electric ignition head structure, which is mainly used for bird repelling in an airport flight area. The device comprises a launching shell body (1), an electromagnetic conductive electric ignition head combination unit (2) arranged on the bottom of the inner cavity of the launching shell body, an electric ignition head inner sleeve unit (3), a bird repelling bomb body unit (6), at least one flame jet hole (4) arranged on the center of the top end surface of the electric ignition head inner sleeve unit, and a propellant layer (5) attached to the top end surface of the electric ignition head inner sleeve unit. The launching port end of the launching shell body is sealed by a sealing end cover (7). The bird repelling bomb device with the integrated structure which is combined by the above components is matched with an aviation special bird repelling launcher to realize electromagnetic induction conductive ignition launching. The bird repelling bomb device with the above structure has the advantages of vertical fixed connection between the electric ignition head and the two electrode ends in the center of the electromagnetic induction magnetic plate surface, realization of rapid ignition of the explosive body, no continuous ignition, no residue, environmental protection safety and the like.

The invention relates to the technical field of tunnel construction, and particularly discloses a high-energy gas fracturing device which comprises an electric ignition head, a charging paper bag and a gas producing agent filled in the charging paper bag. One end of the electric igniter is fixed at the bottom center of the charging paper bag, and the other end penetrates through the charging paper bag and extends out; the gas production powder is ignited through the electric ignition head, the gas production powder is combusted to generate high-energy gas, and the restraining body around the powder containing paper bag is fractured; wherein the gas production medicine is prepared from 5-aminotetrazole, FOX12, an oxidizing agent strontium nitrate and a process additive.

The present invention discloses a downhole controllable heat source and a method for repairing oil and gas wells, belonging to the technical field of downhole plugging and repair. To solve the problem of the complex process of the existing oil well casing repair technology, the downhole controllable heat source includes a chemical loading cylinder (101) and an electric ignition component (1). The chemical loading cylinder (101) contains combustion chemicals, and the electric ignition component (1) can ignite the combustion chemicals and make the combustion chemicals continuously burn and release heat. The downhole controllable heat source and the method for repairing oil and gas wells can achieve safe, fast and low-cost well repair operations downhole.

The utility model discloses a multi-insurance timing device which comprises a shell, a cavity is arranged in the shell, a pushing mechanism is arranged in the cavity, a sliding assembly is further arranged in the shell, a sliding way used for sliding of the sliding assembly is arranged in the shell, two channels are arranged in the shell, the cavity and the interior of the sliding way are communicated through the two channels, and the two channels are the first channel and the second channel respectively. An electric actuator which is connected with the pushing mechanism and limits the sliding assembly to move in the sliding way is arranged in the first channel, a detonator is arranged on the sliding assembly, an electric ignition tube which is connected with the pushing mechanism and matched with the detonator is arranged in the second channel, a power source is arranged on the shell, the pushing mechanism is connected with the power source, and a push rod is arranged on the pushing mechanism. An electronic component is arranged on the shell, a limiting piece for limiting the push rod of the pushing mechanism to be electrically communicated with the electronic component is arranged on the shell, and the pushing time of the pushing mechanism is controlled by the clock mechanism. The electric connection of the push rod triggering device is accurately controlled by the clock mechanism, multiple insurance guarantees are arranged, and the operation safety is improved.

The application discloses a gas water heater and a control method thereof, which comprises the following steps: S1, obtaining an ignition command; S2, detecting and storing a flame current initial value I0; S3, discharging and igniting an igniter, opening a gas valve, detecting a flame current value I1 in real time, and obtaining a difference value AI=I1-I0; S4, judging whether the opening time AT is less than a first set time Tset1, if yes, executing step S5, and executing step S6; S5, judging whether the difference value AI is greater than a first current set value Iset1, if yes, outputting a flame signal, judging whether the difference value AI is less than a second current set value Iset2, if yes, outputting no flame signal; S6, judging whether the difference value AI is greater than a third current set value Iset3, if yes, outputting the flame signal, judging whether the difference value AI is less than a fourth current set value Iset4, if yes, outputting no flame signal; wherein, Iset1=Iset2+I 回差1 , Iset3=Iset4+I 回差2 ; Iset3 is greater than Iset1; and Iset4 is greater than Iset2. The application can adapt to the change of environment to judge the presence or absence of the flame signal.

The invention provides a wireless drive control device of a flyer launching system and a test method thereof, and relates to the field of flyer launching system control. In the wireless driving control device, a power supply module supplies alternating current to an emission controller and supplies direct current to a remote controller; the remote controller can be in wireless communication with the emission controller so as to send an emission command to the emission controller, the emission controller transmits the received emission command to the electric igniter, and after the electric igniter receives an emission signal, the automaton is controlled to achieve emission of a flyer by the aircraft cannon. Wired connection shooting can be achieved through the launching controller, the 20-meter distance limitation defect of wired connection and the voltage attenuation problem of limited connection can be eliminated, wireless control shooting is achieved through remote operation (within 5 kilometers) of the far-end controller, on one hand, the safety of operators is improved, and on the other hand, the safety of the operators is improved. And on the other hand, the remote operation capability of the system is improved, and the arrangement performance of the system is optimized.

The utility model discloses an automobile igniter which comprises an igniter body and a conductive ignition wire, the igniter body is provided with an electric tool battery socket, one end of the igniter body is provided with an output interface, the output interface is electrically connected with the conductive ignition wire, and the conductive ignition wire comprises a positive electrode chuck and a negative electrode chuck. The positive electrode chuck and the negative electrode chuck respectively clamp two electrodes of an automobile storage battery, the output interface comprises a polarity positioning hole formed in the igniter body, one end of the polarity positioning hole is square, the other end of the polarity positioning hole is arc-shaped, the conductive ignition wire comprises a plug, and the plug is provided with a shell matched with the polarity positioning hole. According to the electric tool battery, the igniter is matched with the electric tool battery, so that the electric tool battery can output current required by automobile ignition, the igniter converts the electric tool battery and matches electric parameters required by automobile ignition, and application scene diversification and high compatibility of the electric tool battery are realized.

The utility model discloses a solar ignition device, which relates to the technical field of oil and gas drilling equipment and comprises a control pry, an ignition gun, an oil tank and an ignition gas source, the control pry comprises a pry body, a solar cell panel is arranged at the top of the pry body, and a storage battery connected with the solar cell panel is arranged in the pry body. The storage battery is used for supplying power to electrical elements carried on the skid body and the ignition gun; the ignition gun comprises a combustion head and an ejector installed in the protective cylinder, the combustion head is fixedly connected with the protective cylinder, a conducting rod is installed above the protective cylinder, the ignition head connected with the conducting rod extends into the protective cylinder and is located above or in front of a nozzle of the ejector, and the ignition gas source is connected with the ejector of the ignition gun through a gas pipe. The solar ignition device does not need to be externally connected with a power source, is particularly suitable for the working condition where a power source is inconvenient to provide, can control the flame jetting direction during ignition, and is wider in application range and high in ignition success rate.

The utility model relates to a combustion head assembly and a coiled tubing, the combustion head assembly comprises a combustion head, the combustion head is provided with a combustion-supporting channel used for conveying combustion-supporting gas, the combustion head is provided with an oxygen channel used for conveying oxygen, and the combustion head is provided with an electric ignition device; the protective cover comprises a cover body, the cover body is arranged at the end, provided with the electric ignition device, of the combustion head, the cover body is provided with a containing space used for containing the electric ignition device, and the cover body is provided with a first hole communicated with the containing space. The protective cover can prevent the electric ignition device of the combustion head from being damaged by the impact force of the sleeve, the first hole is formed in the cover body, it can be ensured that combustion-supporting gas is released to an underground gasification reaction area through the first hole, meanwhile, the gas can be prevented from being ignited in a sealed environment to cause explosion, and the safety of the combustion process is improved.

The present invention relates to the field of master alloy smelting and discloses a method for improving master alloy yield and reducing gaseous impurities. MgO, CaO, Al2O3, cryolite (Na3AlF6), KCl, and MgCl2 are ground into powder, added with an adhesive, and mixed to form pellets to produce a shielding agent, which is then dried. An ignition agent is prepared using potassium permanganate, aluminum powder, and potassium chlorate in a specific ratio. An oxide, a reducing agent, and a slag-forming agent are uniformly mixed in a specific ratio to prepare a reactant. After the materials are distributed, a reaction is triggered by lower electrical ignition, and the reactant is fully cooled to produce the desired master alloy. The shielding agent isolates the reaction process from air, preventing gaseous impurities from participating in the reaction. This method transforms the conventional off-furnace aluminothermic reduction process into a nearly pure vacuum self-propagating reaction, reducing alloy splashing and achieving an increased alloy yield and a reduced gaseous impurity content.

The invention discloses a closing-up structure of an electric ignition tube. The closing-up structure comprises a shell, an electrode plug, a charging ring, a blanking cap, a cover plate and a charge. The output end of the shell is provided with an annular step, and the blanking cap is embedded in the step and fixedly connected with the step in a radial closing-up mode. The blanking cap is provided with a center through hole, the diameter of the center through hole is smaller than the outer diameter of the charging ring, and the center through hole is used for limiting the charging ring and preventing the charging ring from flying out during ignition. The lower end of the blanking cap is provided with a two-stage step, the cover plate is bonded in the step through high-temperature-resistant glue, and the surface of the cover plate is coated with damp-proof paint. And the cover plate is made of an easy-to-break material with moderate thickness, has a weak bonding structure, and is preferentially broken to realize pressure relief when the combustion pressure reaches a threshold value. A fillet structure is arranged at the contact part of the blanking cap and the shell so as to optimize stress distribution, and a high-temperature-resistant sealant layer is filled in a closing gap, so that the overall sealing performance is enhanced. The invention has the beneficial effects of reliable limiting of the charging ring, safe pressure relief mechanism, reasonable stress distribution and excellent sealing performance.