80 results about "Electromagnetic pulse" patented technology

The application discloses an alloy vacuum self-consumption electric arc smelting magnetic pulse grain refining device, which comprises a vacuum self-consumption electric arc furnace body and a copper crucible, a metal molten pool is arranged in the copper crucible, a plurality of non-contact magnetic pulse coils are wound on the outer wall of the copper crucibble, and a water-cooling interlayer is arranged between the vacuum self-consumption electric arc furnace body and the copper crucible; a screw rod is arranged between the vacuum self-consumption electric arc furnace body and the copper crucible, and the screw rod is connected with a motor. The application further discloses a method for alloy vacuum self-consumption electric arc smelting magnetic pulse grain refining, cooling water is introduced into the water-cooling interlayer, a power supply of the vacuum self-consumption electric arc furnace is turned on for smelting, a pulse power supply is turned on when the height of the metal molten pool formed at the bottom of the copper crucible reaches 50 mm, and the plurality of non-contact magnetic pulse coils are uniformly moved upwards until the process is finished. The metal molten pool is directionally treated by electromagnetic pulse in a moving mode, the columnar crystal-equiaxed crystal transition is realized in the alloy ingot preparation process, the grain is refined, and segregation is reduced, so that the overall organization of the large-size long ingot is refined.

This invention discloses a high-performance electromagnetic pulse (EMP) welding process for tubular components, comprising the following steps: configuring a corresponding intermediate layer and drive tube according to the welding process requirements of the target weldment; sequentially assembling the inner tube, intermediate layer, and outer tube; sequentially assembling the drive tube, magnet collector, and electromagnetic generating coil; setting the charging voltage and energy storage level of the pulse capacitor; charging the pulse capacitor bank in the charging circuit to a preset voltage; rapidly discharging the high-voltage electrical energy stored in the capacitor bank to the electromagnetic generating coil to generate a transient strong magnetic field; a huge Lorentz force is induced inside the drive tube, propelling the outer tube to violently impact inward at extremely high speed. This invention can achieve high-performance electromagnetic pulse welding of multi-property material combinations and multi-size tubular components; through the design of the magnet collector and drive unit, it achieves electromagnetic pulse welding of low-conductivity, small-gap tubular components; and innovatively proposes the concept of an intermediate layer, thereby realizing the welding of dissimilar or high-performance, difficult-to-join metals.

The utility model belongs to the mixing machine exhaust technical field, concretely relates to a kind of integrated pulse cleaning and dust recycling mixing machine exhaust system, comprising: cylinder, cylinder lower end is provided with air inlet, pre-separation cover, finned heating tube group and filter core are sequentially arranged in cylinder from bottom to top, cylinder is provided with the setting and is provided with blowing pipe, blowing pipe one end is towards filter core, blowing pipe other end is communicated with compressed air storage tank, and electromagnetic pulse valve is provided on blowing pipe.The system uses multiple sensors to cooperate, inlet / outlet humidity sensor real-time monitoring, PLC dynamic adjustment dust removal frequency, forms closed-loop control, can effectively separate particulate matter and small molecule substance in gas.

The application relates to the technical field of meat processing, in particular to a vacuum circulation pickling method for meat. The method comprises the following steps: submerging meat pieces to be pickled in pickling liquid added with 0.1% hematin iron; first, applying a transient high-voltage electromagnetic pulse to precisely perforate the cell membrane of the meat; then, applying an alternating vortex magnetic field with a specific frequency; utilizing the high-frequency micro-vibration of the hematin iron in the magnetic field to generate a magnetohydrodynamic effect, expand the micro-pore channel and pump the pickling material molecules into the cell interior; finally, combining vacuum circulation alternating treatment to further press the pickling material into the tissue gap. The added hematin iron significantly enhances the promotion effect of the magnetic field on the pickling material delivery, and the pickling time is shortened to 30 minutes or less. It is proved through measurement that the pickling liquid absorption rate of the process is high, the penetration reaches the geometric center of the meat pieces, and the integrity and water holding capacity of the meat structure are perfectly preserved.

This invention discloses a method, apparatus, device, and medium for calculating electromagnetic waves in a geo-ionospheric waveguide. It obtains the pulse operating frequency set and medium parameter set of electromagnetic waves in a layered geo-ionospheric waveguide model. The electromagnetic waves consist of multiple electromagnetic waves to be calculated in different frequency bands. Based on the pulse operating frequency and medium parameter set of each electromagnetic wave to be calculated, a target calculation method for the receiving electric field is determined from multiple preset electric field calculation methods. The target transmission coefficient is determined based on the transmitting electric field at the emission point of each electromagnetic wave to be calculated, the layered geo-ionospheric waveguide model, and the target calculation method for the receiving electric field. The time-domain waveform of the electromagnetic waves is calculated based on the target transmission coefficients of multiple electromagnetic waves to be calculated and a preset electromagnetic pulse frequency domain calculation formula. In this way, the most suitable target calculation method for the receiving electric field is determined based on the pulse operating frequency set and medium parameter set of the electromagnetic waves to be calculated in different frequency bands, enabling accurate and rapid calculation of electromagnetic waves in a layered geo-ionospheric waveguide.

The utility model discloses a kind of electric leakage detection early warning ground nails, comprising: metal rod and detector on the metal rod, the detector includes shell, pulse sensor, main control unit, detection switch and alarm, the shell is insulating shell and is connected with the metal rod, the detection switch is equipped on the shell, the shell inside encapsulation has the pulse sensor, main control unit and alarm, wherein, the pulse sensor is connected with the metal rod, the detection switch, alarm and pulse sensor are connected with the main control unit. The device can be inserted in the ground at the side of street lamp, power distribution cabinet and other equipment needing to detect whether leakage, when these equipment appears leakage, electromagnetic pulse generated by alternating current can be detected by pulse sensor, after pulse sensor transmits signal to main control unit, main control unit can control alarm to alarm, can directly remind passing personnel to pay attention to leakage danger.

This invention discloses a low-frequency electromagnetic energy selective surface structure in the field of electromagnetic protection technology. The structure comprises a double-layer energy selective surface, including a first surface layer and a second surface layer, which are correspondingly arranged. Both the first and second surface layers are composed of a periodic metal structure loaded with PIN diodes. This invention utilizes the impedance change characteristics of PIN diodes under strong and weak fields. Under strong electromagnetic pulses, the diodes automatically conduct to form a low-impedance shielding mesh, achieving protection performance close to that of a metal shield. Under normal communication conditions with weak fields, the diodes are cut off, exhibiting high capacitive reactance. Combined with the structural resonance of the ring-cross unit, efficient wave transmission is achieved in the L / S band.

This invention discloses an electromagnetic pulse welding coil for welding tubular metals. The electromagnetic pulse welding coil is arranged circumferentially along a driving tube. The driving tube can obtain Lorentz force through electromagnetic induction of the electromagnetic pulse welding coil, providing the impact velocity for welding. The electromagnetic pulse welding coil is composed of several circumferentially connected "convex"-shaped structures. The "convex"-shaped structures are arranged with an inward rotation of 90°, and the wide end at the outer end has a notch. One side of the notch is connected to the other side of the notch of the adjacent "convex"-shaped structure through a connecting block, thereby connecting all the "convex"-shaped structures into a whole, forming a ring structure around the driving tube. This invention has the advantages of significantly improving the electromagnetic energy utilization efficiency, increasing electromagnetic energy, and being applicable to electromagnetic pulse welding of difficult-to-deform metals.

The utility model discloses an automatic early warning optical cable junction box belongs to optical cable junction box technical field, solved the optical cable junction box when using in dry windy sand environment, the box body and the wind rubs the static charge and is difficult to dissipate, and the discharge produces the EMP coupling into the in -house optical fiber patch cord, passes through the connector discharge burnout far -end or user end optical module, causes the light equipment port offline, inserts new module and is damaged again, the problem of fault concealment is difficult to trace back, causes module repeated damage, service interruption. Including box body and setting in the static discharge remote monitoring and suppression circuit in the box body, the static discharge remote monitoring and suppression circuit includes multiband electromagnetic pulse detection module, difference formula ground current monitoring module. The utility model discloses through real -time monitoring the electromagnetic pulse and ground current change around the box body, analyzes and judges static discharge event, and synchronous starting remote alarm signal transmission and initiative charge discharge mechanism, realizes the overall protection and intelligent inhibition to static harm.

This invention discloses an anti-cruise missile interception system, relating to the field of national defense and military technology. The anti-cruise missile interception system includes a blocking net, a towing device, and a high-voltage power supply. The blocking net is attached to the towing device and electrically connected to the high-voltage power supply. The blocking net is woven from chemical fiber or carbon fiber filaments and mounted on a tower or strip-shaped balloon. The high-voltage power supply employs a high-voltage arc radiation device or a high-voltage electromagnetic pulse device. The immense energy released by the high-voltage power supply can disrupt the guidance and control systems of cruise missiles, causing them to deviate from their targets or even triggering an explosion. This invention has significant advantages such as rapid response, high energy, large interception range, automatic interception, ability to counter continuous cruise missile attacks, low cost, and ease of manufacturing. Through dense, carpet-like deployment, it can effectively intercept enemy cruise missiles and loitering munitions, protecting important military bases and targets.

This invention discloses a time-division multiplexing system for power generation and controllable space electromagnetic pulse radiation based on a conductive tether, belonging to the field of aerospace electric tether technology. The invention uses a single retractable conductive tether as the core carrier and adopts a time-division multiplexing topology. A fully integrated radiation-resistant solid-state switch array within the cabin achieves physical-level electrical isolation and nanosecond-level disconnect-before-make switching between power generation and pulse radiation modes. The controllable space electromagnetic pulse radiation is actively excited high-energy pulse radiation, with high-energy nanosecond-level electromagnetic pulses actively injected through a pulse emission module, significantly increasing radiation power and possessing practical value for electromagnetic passivation of space debris. In power generation mode, the tether and space plasma form a closed loop to cut the geomagnetic field and generate electricity. In pulse radiation mode, the tether acts as an end-fed directional long-line antenna radiating electromagnetic pulses. Active sheath control stabilizes the sheath potential and suppresses losses. Radio frequency isolation achieves electrical decoupling between the cabin section and the radiation section, and the mode switching timing does not depend on the plasma's millisecond-level relaxation response, avoiding the risks of mutual exclusion and self-interference. This invention resolves the fundamental conflict between single-strand conductive tether power generation and pulsed radiation. It exhibits strong dynamic stability and meets electromagnetic compatibility standards. The core components are based on on-orbit verification technologies such as TSS-1R, PMG, and T-Rex, making it highly feasible for engineering applications. It can be applied to aerospace scenarios such as satellite on-orbit operation and maintenance and space debris management.

The application discloses a compact controllable high-voltage ultra-short electromagnetic pulse generating device, which comprises a Marx main circuit and a pulse waveform shaping circuit, the Marx main circuit and the pulse waveform shaping circuit are both separately provided with sealed metal containers, the two metal containers are filled with insulating gas, a charging power supply connector for connecting a charging power supply is arranged on the metal container of the Marx main circuit, a discharge connector is further arranged on the metal container of the pulse waveform shaping circuit, a conductive structure is arranged between the two metal containers, and the Marx main circuit and the pulse waveform shaping circuit are connected through the conductive structure; a trigger signal connector for connecting a trigger device is further arranged on the metal container of the Marx main circuit, and the trigger device is used for triggering a controllable spark gap switch, so that the discharge voltage superposition effect and the output voltage amplitude can be improved, and the loss caused by the asynchronization of discharge switches can be reduced.

This invention discloses an electromagnetic pulse treatment device and method for zoned customized reinforcement of metal welded joints, belonging to the technical field of post-weld modification treatment of metal welded joints. It includes an upper mold, a lower mold, welded sheet metal, an insulating baffle, a magnet collector, a fixing device, a discharge coil, and a pulse discharge circuit. The heat-affected zones on both sides of the welded sheet metal are first subjected to transient pulse current treatment near the weld seam by induced eddy currents. The weld seam is then subjected to a high-energy pulsed strong magnetic field collected by the magnet collector. Furthermore, due to the contraction effect of the induced eddy currents and the diffusion effect of the pulsed strong magnetic field, both the weld seam and the heat-affected zone are further affected by the current and magnetic field during the attenuation of the electromagnetic energy field. This invention induces intense Joule heating, shock waves, and electromagnetic energy effects at the interface of heterogeneous joints through high-energy electromagnetic pulses, thereby instantly achieving the precipitation of nano-reinforcing phases and eliminating defects. It possesses advantages such as high flexibility, high efficiency, high performance, and high reliability.

A HEMP enclosure includes a recessed coaxial connector interface. The connector interface is located at the bottom of a metallic tube in the chassis wall that functions as a waveguide below cutoff (WBC). The WBC attenuates the electromagnetic pulse threat signal to a benign level when the transmitter enclosure is not inserted for testing. Internal to the chassis, the connector interface includes an omni-directional antenna. A transmitter enclosure includes a wand to plug the transmitter into the connected interface. The transmitter generates an RF signal at a desired frequency range that is then transmitted via a coaxial cable in the wand to the antenna in the chassis.

This utility model discloses an offline baghouse dust collector for lime kiln gas, belonging to the field of environmental engineering. It includes a dust collector housing with a dust hopper at the bottom. Several electromagnetic pulse valves are fixedly connected to the left side of the housing, and an air storage tank is fixedly connected below each valve. A rotary valve is fixedly connected to the bottom of the dust hopper, and a screw conveyor is fixedly connected to the bottom of the rotary valve. This utility model utilizes electromagnetic pulse valves, an air storage tank, and dust collector bags on the side of the dust collector housing, and a rotary valve and screw conveyor on the dust hopper. Filtration is achieved through the cooperation of the dust collector bags and the air storage tank. Furthermore, the electromagnetic pulse valves allow for cleaning of the dust collector bags, and the rotary valve and screw conveyor discharge the dislodged dust. The dust collector is divided into multiple chambers; during cleaning, only the inlet valve of one chamber is closed, while the other chambers continue operating, ensuring continuous operation.

This application provides a method for collaborative analysis of the status of a pole-mounted circuit breaker with primary and secondary fusion, comprising: identifying the symmetry type of the arc-extinguishing current waveform by analyzing the arc duration and pulse direction information data in the initial acquisition dataset, wherein the symmetry type of the arc-extinguishing current waveform includes an asymmetry type; if the arc-extinguishing current waveform is of an asymmetry type, then analyzing the alternation law of positive and negative transient electromagnetic pulses through pulse direction information data to evaluate the polarity neutralization state of the residual charge; by fusing the polarity neutralization state of the residual charge with the cumulative wear depth of the contacts, using a random forest algorithm to predict whether there is abnormal drift of the zero position of the integral baseline, obtaining the prediction result of abnormal drift of the zero position of the integral baseline; if the adjusted discrimination threshold exceeds the preset allowable range, then jointly analyzing the cumulative wear depth and the arc duration of the circuit breaker to identify the actual wear pattern of the contacts.

This invention discloses a high-efficiency MVR decomposition and evaporation system for sodium bicarbonate production, replacing a wet decomposition tower. The system includes a buffer tank for receiving saline wastewater from a raw material tank; a preheater for receiving the saline wastewater from the buffer tank and initially raising its temperature; a heating chamber for receiving the preheated saline wastewater from the preheater; an evaporation chamber for flash evaporation of the heated brine to obtain a concentrated solution; a carbonization tower for receiving the concentrated solution from the evaporation chamber and CO2 gas supplied from another inlet for a carbonization reaction; an online monitoring module for real-time monitoring of scaling trends in the evaporation chamber; and a high-frequency electromagnetic pulse device for periodically flushing the evaporation chamber with high-frequency pulse waves, thereby periodically disturbing the solution to inhibit crystal growth. This high-efficiency decomposition and evaporation system offers advantages such as low energy consumption, environmental friendliness, small footprint, and high safety and reliability. It provides an alternative to the wet decomposition tower necessary in sodium bicarbonate production, reduces evaporation water volume, and offers a new technological approach.

The application discloses a geological disaster risk area multi-point deformation monitoring system and an implementation method, relates to the technical field of geological disaster monitoring, and comprises a sensor node layer, a communication network, an edge gateway layer and a center platform layer. The sensor node is integrated with a UWB electromagnetic pulse beacon ranging module and a multi-source sensing unit, ms-level network clock synchronization is realized by using a TCXO temperature compensation crystal oscillator, and through matching filtering, wavelet denoising and a multi-path suppression algorithm, the ranging precision of ±1-2 cm can be realized in a complex environment. The method adopts adaptive dual-mode sampling, multi-source data deep fusion and periodic factor graph optimization, and outputs three-dimensional deformation data with displacement precision better than ±3 mm; in combination with threshold value and trend double determination, three-level blue-orange-red early warning is realized, and the alarm delay is less than or equal to 10 s. The system has full-dimensional low-power and wide-temperature-range design, and the node endurance is more than 12 months, and the system can be deployed at high density, effectively solves the defects of low precision, high power consumption and poor adaptability of traditional monitoring technology, and is suitable for long-term real-time monitoring and early warning of disasters such as landslides, collapses and settlements.

This invention relates to the field of laser cutting technology and discloses a laser cutting device for paper product processing. The device includes a cutting table with two sets of hydraulic cylinders symmetrically installed inside. A hydraulic lifting column is movably mounted on the upper surface of the cutting table from inside each hydraulic cylinder. A paper pressing seat is mounted on the upper end of the hydraulic lifting column. An X-axis drive assembly is mounted above the cutting table, and a Y-axis drive assembly is movably mounted inside the X-axis drive assembly. A laser cutter is mounted at the bottom of the Y-axis drive assembly, and a focusing cutting head is mounted at the lower end of the laser cutter. This invention utilizes a traveling gear that meshes along a ring-shaped limiting step, causing the tracking seat to move in a circular motion on a ring track. This precisely adjusts the injection direction of the flame retardant below, opens the electromagnetic pulse valve, and allows compressed gas from the carbon dioxide compression tank to be ejected at high speed from the flame-retardant injection pipe, covering the combustion area with carbon dioxide gas and achieving an automatic flame-retardant effect.

Disclosed are methods and systems for suppressing extreme voltage surges due to transient electromagnetic energy disturbance such as a detonation of a nuclear weapon at high altitude generating an EMP (HEMP) comprising E1, E2, and E3 component pulses. Surge protection assemblies form a surge protection device (SPD) mounted directly on AC and DC power line conductors with embedded overcurrent protection. The inline mounted SPD eliminates connecting wire leads, propagation time delay response, and voltage drops due to wire inductance, providing accurate clamping level responses. The protecting assemblies are selected and coordinated to achieve a predefined response to react at protection threshold voltage levels and with current capacity to mitigate complex components of HEMP. The tertiary protection assembly disconnects an electrical load after a prolonged overvoltage is present associated with a Geomagnetic disturbance and reconnects the electrical load when an overvoltage condition is not present.

The application discloses an electromagnetic pulse generating unit of a yacht forced stopping system, comprising a basket, a low-voltage control module, a medium-voltage energy storage module, a high-voltage output module and a cooling module. The basket comprises a chassis and a hanger, the low-voltage control module, the medium-voltage energy storage module and the high-voltage output module are all tower type boxes, are arranged along the circumferential side of the chassis, and the cooling module is arranged in the middle of the chassis. The low-voltage control module stabilizes voltage and reduces noise for external power supply, the medium-voltage energy storage module converts alternating current into direct current and modulates output pulse direct current, and the high-voltage output module further boosts voltage to output high-voltage pulses meeting field intensity requirements. The application has compact layout and high integration degree, can significantly reduce the volume and weight of the device, and improves the system mobility and working stability.

This invention discloses an intelligent detection system and method for underground karst hazards based on the electroseismic effect. It employs an electromagnetic emission module to transmit a single electromagnetic pulse signal to the detection area, and an electromagnetic acquisition module to receive the electromagnetic pulse signal and feed it back to an electromagnetic acquisition base station. Simultaneously, a seismic acquisition module receives seismic wave signals and feeds them back to a seismic acquisition base station. The intelligent control host synchronizes with both base stations, enabling simultaneous acquisition of two types of data with only a single electromagnetic pulse excitation, eliminating the need for additional excitation equipment. This ensures data acquisition under the same spatiotemporal conditions, providing accurate data support for subsequent non-destructive, efficient, and high-precision identification of urban underground hazards. During data processing, a self-constructed model is used to determine the presence of anomalies, eliminating the need for manual intervention and achieving good accuracy, thus providing real-time data support for urban safety management.

The present application relates to the technical field of data processing, in particular to a dynamic identification and detection system of electromagnetic pulse attack based on spectrum analysis; the digital sequence is segmented according to the variation trend, the energy mutation degree value is obtained according to the data difference feature and fluctuation feature of the signal segment, the feature difference value is obtained according to the energy mutation degree value and data difference feature of two signal segments under the same category, the comprehensive difference value of the signal segment is obtained according to the time interval feature and feature difference value of the signal segment, the frequency richness is obtained according to the number feature and comprehensive difference value of the signal segment in the preset sliding window, the comprehensive energy mutation degree is obtained according to the energy mutation degree value of the signal segment in the preset sliding window, and the relative proportion coefficient is obtained according to the frequency richness and comprehensive energy mutation degree.The adaptive window length is obtained according to the relative proportion coefficient, the electromagnetic pulse signal in the adaptive window length is subjected to STFT processing, and the accuracy of dynamic identification is improved.

This invention discloses a grounding system for suppressing transient electromagnetic interference from laser target firing, belonging to the field of electromagnetic compatibility grounding technology. It aims to solve the problem of efficient discharge of broadband, high-intensity electromagnetic pulses generated by high-pulse laser target firing. The system includes an inner equipotential ring, an outer annular grounding surface, symmetrical connection components, and an external grounding network. The inner equipotential ring is located inside the target cavity and is electrically connected to the cavity wall through multiple overlapping points to equalize the transient potential within the cavity. The outer annular grounding surface surrounds the target cavity and is electrically connected to the inner equipotential ring through at least four symmetrically distributed conductive connectors. The outer annular grounding surface is connected to multiple points of vertically arranged grounding electrodes in a ring array via multiple connecting flat steel bars to achieve electromagnetic pulse current discharge. This invention can effectively suppress ground potential rise and secondary electromagnetic interference, improving the operational stability and measurement accuracy of high-pulse laser devices.

The utility model provides a kind of mine ash removal device, it relates to mine dust removal technical field, including: casing, air inlet, air outlet, air cylinder, cyclone dust collector, support frame, hopper and electromagnetic pulse valve;The inside of casing is provided with filter dust board and filter dust bag;Electromagnetic pulse valve is set to the left side outside casing, and air pocket is fixedly connected on the lower side, and left side is fixedly connected with spout pipe.Filter dust board and filter dust bag, can carry out efficient filtration to working area dust, ensure optimum filtration effect, fixed plate right end is provided with rotary groove, rotary groove is provided with snap ring inside, snap ring can rotate, can realize filter dust bag rotation, avoid partial stress to cause filter dust bag cleaning uneven, spout pipe is provided with baffle, baffle can be moved according to the position of filter dust board and filter dust bag, design is more reasonable, can be targeted automatic flushing, reduce the risk of blockage, prolong equipment service life.

The application belongs to the technical field of medical apparatus and specifically discloses an electromagnetic pulse type shock wave balloon and a vascular interventional treatment instrument, the electromagnetic pulse type shock wave balloon comprises a medical balloon and a medical catheter, a micro disc type coil is arranged in the medical balloon, a conductive wire is arranged in the medical catheter, the conductive wire is connected with the micro disc type coil, and a metal patch is arranged on the inner wall or the outer wall of the medical balloon and corresponds to the micro disc type coil; the micro disc type coil is connected with an external power supply through the conductive wire, the external power supply provides pulse current to flow through the micro disc type coil, an alternating magnetic field is excited, the metal patch generates an eddy current in the magnetic field, the eddy current generates a repulsive force in the magnetic field, the metal patch is pushed to move, the metal patch drives the balloon wall surface to expand and contract, and an outward radiation of a shock wave is formed. The electromagnetic pulse type shock wave balloon is convenient to manufacture, low in cost, longer in service life and stable in shock wave energy, and is a novel shock wave balloon for vascular calcification treatment.