156 results about "Arc energy" patented technology

The invention discloses an accurate zero crossing point control method for a built-in relay of a large-current electric energy meter, which relates to the technical field of power electronics and intelligent metering and comprises the following steps of: receiving a power grid voltage digital signal, determining a voltage zero crossing point by comparing symbol changes of adjacent sampling values, establishing a phase corresponding relation between voltage and current, and calculating a current phase corresponding relation; generating current zero crossing point prediction data; when a relay switching instruction is received, the specific moment of the next current zero crossing point is calculated, and the control signal sending moment is determined; a relay driving control signal is sent, the actual action completion moment of the relay is collected, the deviation from the expected zero crossing moment is calculated, and the mechanical action delay time parameter of the relay is corrected. By predicting the current zero-crossing time and considering the mechanical action delay characteristic of the relay, accurate switching of the built-in relay at the actual current zero-crossing point is achieved, meanwhile, the self-adaptive adjusting capacity is achieved, the arc energy during large-current switching is reduced, the service life of the relay is prolonged, and the reliability of the electric energy meter is improved.

A method and system for predicting an effective remaining electrical life of a high-voltage circuit breaker. A circuit breaker electrical life test is carried out and associated data sets of single arcing times and single arcing energy are constructed; a degree of wear of a contact is replaced with accumulated arcing energy to characterize whether a circuit breaker fails; and function fitting is used to construct the relationship between the single arcing energy and the single arcing times; and on this basis, the method for predicting an effective remaining electrical life of a high-voltage circuit breaker is formed. Therefore, the rapid and accurate prediction of a remaining service life of a circuit breaker can be realized only by measuring simple data, thereby providing guarantee for the reliable operation of a power grid.

The invention relates to the technical field of electrical fault positioning, in particular to an urban rail train relay state online monitoring method and system. The specific implementation process comprises the following steps: collecting coil current, contact voltage, load current and environment vibration signals by using an electrical sensor group; when the coil current is subjected to step change, intercepting an electromechanical characteristic data set; arc energy and contact resistance fluctuation characteristics are calculated, correlation analysis is carried out in combination with environment vibration signals, and passive fluctuation and active fluctuation are distinguished; and establishing a multi-factor health degree evaluation model, dynamically adjusting the arc energy and the weight coefficient of the contact resistance according to the magnitude of the load current and the vibration intensity, monitoring the health state of the relay in real time, and predicting the residual life. Through multi-dimensional data synchronous acquisition and vibration decoupling, the interference of mechanical vibration on electrical performance monitoring is effectively eliminated, the problem that a dynamic working condition cannot be reproduced in an off-line test is improved, and the accuracy of relay state evaluation and service life prediction is remarkably improved.

The invention relates to a modular intelligent power distribution cabinet safety management method based on the Internet of Things, particularly discloses a modular intelligent power distribution cabinet safety management method based on the Internet of Things, and aims to solve the problems that a traditional power distribution cabinet monitoring system is poor in expansibility, weak in fault recognition capability and rigid in protection strategy. The method comprises the following steps: deploying a modularized sensing unit with a standardized interface to realize plug and play; multi-dimensional data of current, voltage, temperature and arc light are synchronously acquired at a high sampling rate; data are fused on the edge side through Kalman filtering, and key features such as harmonic distortion rate, voltage sag depth, temperature gradient change rate and electric arc energy accumulation value are extracted; performing dynamic risk assessment by using a five-layer deep belief network model, and triggering early warning when the high risk probability exceeds a threshold value; adaptively adjusting an overcurrent protection constant value, opening delay and isolation logic according to an evaluation result; and the edge-cloud coevolution is realized by continuously optimizing the model and the strategy through cloud reinforcement learning.

The invention discloses a voltage circuit breaker AC open circuit control method and device, and relates to the technical field of open circuit control, and the method comprises the following steps: obtaining a target waveform sequence of a target AC circuit, and obtaining a fundamental component and a higher harmonic component through frequency domain decomposition, so as to extract current waveform features; constructing a zero-crossing prediction model based on current waveform characteristics, dynamically correcting the prediction model in combination with higher harmonic components and load asymmetry characteristics, and generating a preliminary breaking moment candidate interval; determining a final on-off moment by combining the instantaneous power direction reversal point and an arc maintenance energy threshold value; and triggering the circuit breaker to act at the final breaking moment, and dynamically adjusting the contact separation speed based on the residual arc energy until the arc energy is attenuated to a safety value. According to the method, the zero-crossing prediction model is constructed by extracting the current waveform characteristics, the contact separation strategy is dynamically corrected, and the problems of arc extension and equipment damage of a traditional circuit breaker under the condition of harmonic distortion or sudden disturbance are solved.

The invention provides a multi-factor influence static contact ablation loss and degradation evaluation method, which comprises the following steps: acquiring environmental condition parameters according to arc energy transfer distribution, fusing the environmental condition parameters into a simulation process, and determining a material loss initial rate; if the initial material loss rate exceeds a preset threshold value, analyzing the influence of arcing time on energy transfer through a neural network model, and judging an evaporation splashing proportion; carrying out data fusion on a material melting mechanism by adopting the evaporation splashing proportion to obtain an ablation depth quantized value; obtaining a nonlinear feature adjustment coefficient under the influence of multiple factors through the ablation depth quantized value, and determining a contact fault risk level; according to the contact fault risk level, iteratively optimizing the environmental condition variable by adopting finite element simulation to obtain a material loss accumulation curve; and if the material loss accumulation curve displays an acceleration trend, predicting the residual arcing time bearing capacity through a neural network, and judging the end point of life.

The invention relates to the technical field of life prediction, in particular to a high-voltage switch cabinet contact life management system based on digital twinning, which comprises a thermal behavior acquisition module, a conductive state construction module, a thermal loss dynamic evaluation module, a thermal disturbance response regulation and control module and a life mapping driving module. According to the method, temperature difference and time interval in an on-off period are collected, thermal stress change is calculated in combination with current density, thermal characteristics of materials are correlated, thermal behaviors of a contact are dynamically reflected, a conductive path boundary is reconstructed based on contact area and pressure offset, a through-flow state is accurately described, and heat accumulation and arc energy input are extracted. The method comprises the steps of analyzing a temperature trend under thermal diffusion lag, constructing a heat loss evolution curve, adjusting thermal conductivity distribution through a ratio of temperature rise to mass migration rate, improving local adaptability of thermal disturbance response, generating a life attenuation layer in combination with equivalent thermal mechanical load and fatigue tolerance, and enhancing dynamic nature and precision of evaluation. And accurate judgment and management of the degradation area are realized.

The invention relates to the technical field of electrical safety, and particularly discloses an arc fault protection method based on a circuit breaker intelligent algorithm, which comprises the following steps: S1, collecting a line current signal in real time, eliminating harmonic interference of a frequency converter from an original signal through an anti-aliasing filter, and converting the original signal into a digital signal; s2, processing the current signal by adopting a three-stage cascade wavelet analysis module, and outputting a dynamic peak-to-average ratio to S4; s3, detecting current disturbance based on a double-slide-rail window, outputting a disturbance positioning mark and a time-frequency feature to S4, judging a disturbance event, and positioning a starting point; s4, receiving the dynamic peak-to-average ratio of the S2 and the disturbance positioning mark and the time-frequency characteristics of the S3, performing path processing according to a characteristic analysis result, and adopting a direct interruption method and an electromagnetic radiation-current frequency domain cross validation method; s5, constructing an electric arc energy accumulation prediction model; according to the invention, the problems of weak arc leak detection, electromagnetic interference maloperation and delay are solved.

The invention discloses an outdoor high-voltage alternating-current drop-out fuse, and relates to the technical field of fuses. The breaking auxiliary mechanism is connected in series in a circuit of the lower wiring terminal and the fusion tube assembly, when a short-circuit fault occurs, the coil generates a strong magnetic field due to instant passing of ultra-large current, the elastic force of the second spring can be overcome to push the iron core to move, and the arc-shaped push plate is driven to quickly push the fusion tube assembly to move away from the insulator; compared with a breaking mode of a traditional drop-out fuse which only depends on gravity drop of a fuse tube after a fuse wire is fused, the mode has the advantages that the breaking process is actively accelerated, the separation time of the upper contact and the conductive pressing plate is greatly shortened, the duration of an electric arc is shortened, and through the arrangement of the spacing adjusting assembly, the electric arc can be rapidly separated from the conductive pressing plate. Each section of small arc is further lengthened, arc energy is greatly weakened, segmented and lengthened progressive arc extinguishing is achieved, and the arc extinguishing speed is far better than that of a traditional design of a fixed-interval arc extinguishing plate.

The invention belongs to the technical field of aerospace structural part welding and manufacturing, and particularly relates to a laser-electric arc hybrid welding method for a high-strength aluminum alloy cabin section. According to the method, a high stress concentration area and a deformation risk area are identified through pre-welding modeling and heat-force coupling simulation, then the laser and electric arc energy ratio is dynamically matched based on a heat input cooperation coefficient eta, and the welding speed and the laser defocusing amount are regulated and controlled in real time in combination with a weld joint forming stability index sigma calculated through a pre-trained LSTM model. And performing fusion depth compensation on the special area through the dynamic arc compensation factor phi, and finally optimizing the performance of the joint through postweld heat treatment. The method can adaptively cope with complex working conditions such as plate thickness fluctuation and track curvature change, defects such as air holes and hot cracks are effectively restrained, the internal defect rate of a welding seam is lower than 0.5%, the tensile strength of a welding joint reaches 90% or above of that of a base material, the method is adaptive to 2-series and 7-series high-strength aluminum alloy and complex welding seam tracks, and the welding quality is improved. And the harsh requirements of high reliability and long service life of aerospace structural parts are met.

The invention discloses a fault detection method and system based on lightning protection device performance data, and relates to the technical field of fault detection, and the method comprises the steps: capturing the airflow velocity and airflow pressure deviation of a multi-crack outlet of a lightning protection device under the impact of a high lightning current in real time, and collecting the arc length data of an outlet point of the lightning protection device, and the temperature and instantaneous arc resistance of the thermocouple induction arc column are calculated. According to the method, the normalized airflow energy density and arc energy density features are combined into the joint feature sequence, so that the coupling relationship between the airflow performance and the arc discharge behavior of the lightning protection device can be captured, and the global detection state of slow evolution and instantaneous mutation of the equipment fault is realized; the lightning stroke threat intensity can be independently reflected by defining the dynamic risk index, lightning stroke threat propagation and topological network characteristics are combined in combination with lightning protection device performance detection data, and therefore transmission effect modeling of the lightning stroke dynamic risk is achieved.

The application discloses an arc-extinguishing chamber assembly, which comprises a piston rod, a cylinder body and a piston seat. The outer circumferential surface of the piston rod, the inner wall of the cylinder body and the end surface of the piston seat form a compression cavity. The outer circumferential wall of the piston rod and the inner wall of the piston seat form an expansion cavity which is communicated with a nozzle. The piston seat is provided with a compression hole which is communicated between the expansion cavity and the compression cavity. The compression hole is provided with a one-way compression valve which allows gas to flow from the compression cavity to the expansion cavity. The piston rod is provided with a piston inner cavity which is communicated with the internal gap of a movable arc contact. The side wall of the piston rod is provided with a compensation hole which is communicated between the piston inner cavity and the expansion cavity. The compensation hole is provided with a compensation valve which allows gas to flow from the piston inner cavity to the expansion cavity. The arc-extinguishing chamber assembly can utilize the arc energy generated by the arc contact assembly, so that the operation of the movable mechanism of the circuit breaker is more convenient and labor-saving, and the breaking operation effect of the circuit breaker is optimized. The application further discloses a circuit breaker using the arc-extinguishing chamber assembly.

This invention relates to the field of pipe welding, and particularly to a method and system for the construction of thermal pipe butt joints. The method includes the following steps: pre-setting a stepped bevel at the pipe joint to be butt joint, featuring a smooth transition between a large-angle transition section and a narrow-gap welding section, with micro-grooves on the surface; fixing the pipe joint using a pipe butt joint device; dynamically calibrating the support force using a pressure sensor and control terminal to ensure the pipe joint alignment deviation is within a standard range; and performing welding using DC positive polarity TIG welding, pulsed TIG welding, or hot-wire TIG welding. The system includes a pipe butt joint device and a welding device. This solution optimizes arc energy distribution through a double-step bevel, enhances fusion through micro-grooves, improves butt joint accuracy through dynamic calibration, controls thermal deformation, and optimizes weld quality through CNC welding. It can reduce defect rates, decrease filler metal usage, increase deposition efficiency, improve first-pass yield, shorten the cycle time, and reduce costs.

The invention relates to the technical field of contact materials for high-voltage electrical equipment, and particularly discloses a contact material, a preparation method and a contact state monitoring method. The contact material includes a base material; the surface of the substrate material is combined with a porous HEAs framework, and the porous HEAs framework is provided with through holes perpendicular to the substrate material; the through holes are filled with phase change alloy, and the melting point of the phase change alloy is smaller than or equal to 200 DEG C. An integrated double-layer structure is adopted, a substrate material with excellent static electrical performance is combined with a porous HEAs framework-phase change alloy composite surface layer with dynamic response characteristics and self-adjusting performance, the contact material is endowed with the electric arc energy active dissipation, erosion self-inhibition and surface self-repairing capacity, and through doping modification of rare earth elements, the contact material can be subjected to surface self-repairing, so that the service life of the contact material is prolonged, and the service life of the contact material is prolonged. Consumption monitoring of the contact material in the working state is achieved, and the technical bottleneck that an existing contact material lacks active protection, self-adaptive repairing and state monitoring is solved.

The invention provides a circuit breaker and an uninterruptible power supply. The circuit breaker comprises a first busbar, a second busbar, a main contact and a plurality of arc contacts, the arc contact comprises an arc moving contact and an arc static contact. When the arc moving contact is in contact with the arc static contact, the plurality of arc contacts are connected in series through the conductive piece, the arc contact located at the head end of the plurality of arc contacts connected in series is connected with the first busbar, and the arc contact located at the tail end of the plurality of arc contacts connected in series is connected with the second busbar. When the arc moving contact is in contact with the arc static contact, the multiple arc contacts are connected in series through the conductive pieces, so that the arc contacts can generate multiple sections of series-connected arcs at the breaking moment, the sum of the voltages of the multiple sections of arcs is far higher than the system power supply voltage after the voltages of the multiple sections of arcs are superposed, the arcing duration can be shortened through the high voltage difference, and the fault can be rapidly cut off. Meanwhile, arc energy is dispersed to a plurality of fractures, heat concentration is avoided, and permanent damage to the arc contact and the internal structure of the circuit breaker caused by high-temperature arc ablation can be prevented.

This invention discloses an AC circuit breaker control method and device, relating to the field of circuit breaker control technology. The method includes the following steps: acquiring the target waveform sequence of the target AC circuit and obtaining the fundamental and higher harmonic components through frequency domain decomposition to extract current waveform features; constructing a zero-crossing prediction model based on the current waveform features, and dynamically correcting the prediction model by combining the higher harmonic components and load asymmetry characteristics to generate a candidate interval for the initial breaking time; determining the final breaking time by combining the instantaneous power direction reversal point and the arc sustaining energy threshold; triggering the circuit breaker operation at the final breaking time, and dynamically adjusting the contact separation speed based on the residual arc energy until the arc energy decays to a safe value. This invention solves the problems of arc extension and equipment damage in traditional circuit breakers under harmonic distortion or sudden disturbances by extracting current waveform features to construct a zero-crossing prediction model and dynamically correcting the contact separation strategy.

The invention provides a static contact of an electric switch, which at least comprises a conductive connecting piece, a contact point and a conductive body, the contact point is welded on the conductive body or the conductive connecting piece, the conductive body and the conductive connecting piece are arranged in a split or integrated manner, and the contact point is welded on the conductive body or the conductive connecting piece based on the total volume of the conductive body. The volume ratio of the conductor made of the iron material in the conductor is 30%-100%, or the material of the conductor at least contains more than 30% of the iron material in volume ratio. The invention also provides an electromagnetic release comprising the static contact. The invention relates to a static contact of an electric switch, which is applied to the electric switch, because an electric conductor containing an iron material is arranged in a main loop, part of arc energy is consumed on the iron material when the electric switch is switched off by utilizing the positive temperature coefficient characteristic of the iron material, so that the current limiting coefficient of the electric switch is reduced; the current limiting performance of the electrical switch can be improved.

The utility model discloses an electric appliance switch arc extinguishing system, which belongs to the technical field of electric appliance equipment, and comprises an arc extinguishing grid sheet group and an arc guide piece, the arc extinguishing grid sheet group comprises arc extinguishing grid sheets which are arranged at intervals in the thickness direction, the arc outlet sides of the arc extinguishing grid sheets are arranged at intervals, and arc extinguishing grid sheet gaps are arranged between adjacent arc extinguishing grid sheets; the arc guiding piece comprises inserting structures, the arc inlet sides of the inserting structures are arranged at intervals in the long-short direction, the end faces of the inserting structures are attached to the end faces of the arc extinguishing grid pieces, air guiding openings are formed between the adjacent inserting structures, and the air guiding openings correspond to the gaps of the arc extinguishing grid pieces. According to the utility model, the weak structure of the sideline-to-sideline electric field of the arc-extinguishing grid sheet can be improved into an optimized sideline-to-plane electric field structure, the risk of breakdown short circuit at the tail end of the arc-extinguishing grid sheet is greatly reduced, and meanwhile, high-temperature gas and residual arc energy discharged from the tail end of the arc-extinguishing grid sheet can be effectively isolated from forming arc short circuit at the tail end of the arc-extinguishing grid sheet, so that the service life of the arc-extinguishing grid sheet is prolonged. And the effective utilization rate of the arc extinguishing grid plates is ensured.

The invention discloses a muzzle arc energy and mass center spatio-temporal evolution analysis method and system, and relates to the technical field of muzzle arc analysis, and the method comprises the steps: building an electromagnetic track launch muzzle arc simulation experiment platform, and obtaining a muzzle arc image through a high-speed photographing system; an arc contour image is obtained based on a local adaptive threshold segmentation and morphological gradient extraction algorithm, and the integrity and robustness of arc contour extraction are improved; based on a robust centroid tracking algorithm of multi-connected domain energy fusion and time sequence consistency constraint, a final arc centroid is obtained, and stable positioning and tracking of the arc energy centroid in the full evolution stage are achieved; and quantitatively analyzing the time-domain evolution characteristics of the highlighted area of the muzzle arc and the law of the spatial motion trail of the mass center of the highlighted area based on the muzzle arc images at different muzzle speed. An effective means is provided for quantitative characterization of a bore port arc, and an experimental basis and a theoretical reference are provided for optimization of a bore port structure, anti-ablation design, regulation and control of emission working conditions and the like of an electromagnetic emission system.

The invention provides a low-temperature curing agent material of quartz sand for fuses and a curing process, and relates to the technical field of fuses, the low-temperature curing agent material comprises a functional phase, a hardening agent and a coating phase, the functional phase is a water glass solution prepared by taking at least one of alkali metal silicate as a main component, and the addition amount of the functional phase accounts for 75-92 wt% of the material; the hardening agent is at least one of organic esters; the compactness, compressive strength, toughness and the like of the cured quartz sand filler are improved through different curing agent system designs, different hardening mechanisms, enhancement modes, hydrophilic improvement and other modes, on one hand, expansion of an electric arc channel when a metal melt is broken under high voltage and large current can be reduced, and the post-arc time and electric arc energy are reduced; on the other hand, the erosion effect of moisture and other substances in the environment on the quartz sand filler in the long-term use process of the product can be reduced, and the long-term use reliability of the fuse product is improved.

The invention relates to the technical field of laser material processing, in particular to an attraction type laser and electric arc collaborative welding device. The device comprises a welding platform, a control host, a laser-arc hybrid welding unit with a moving module, a constraint channel unit and an attraction power unit. The restraining channel unit comprises a sealing belt and a sealing retracting and releasing assembly, the sealing retracting and releasing assembly and the laser-arc hybrid welding unit move synchronously, one end of the sealing belt is arranged on the sealing retracting and releasing assembly, and the sealing belt is attached to the butt joint gap between the two workpieces to be welded. The other end of the sealing belt is attached to one end of the butt joint gap and connected with the attraction power unit. By the adoption of the attraction type laser and electric arc collaborative welding device, the problems of low laser and electric arc energy coupling efficiency and poor stability in the laser welding process are solved, and the attraction type laser and electric arc collaborative welding device is suitable for laser welding of metal materials.

The invention discloses a pulse type pantograph net arcing energy detector and a method thereof. The pulse type pantograph net arcing energy detector comprises a measuring circuit, a timing circuit and a frequency division and transmission circuit. The measuring circuit is used for converting a light current signal generated by arcing into a pulse signal of which the frequency is in direct proportion to the size of the light current; the timing circuit is used for starting timing after the pulse signal is interrupted and generating a trigger signal when timing reaches a preset interval threshold value; and the frequency division and transmission circuit is used for receiving the pulse signal output by the measuring circuit and counting, and outputting a count value as arcing energy data when the trigger signal is received. According to the invention, the arcing energy can be detected, another quantifiable index is provided for the arcing intensity, and the characteristics of wide range, low error, quick response and interference resistance are achieved on the measurement effect.

The invention relates to the technical field of quartz crucibles, and discloses a sintering furnace for quartz crucible preparation, the sintering furnace comprises an electric arc furnace provided with electrodes and a detection mechanism, the detection mechanism comprises a dual detection assembly and a rotating assembly, the dual detection assembly comprises a mounting box, and a plurality of fixing pipes are fixedly mounted on the mounting box; the protruding block is installed in the fixing pipe in a sliding mode. The arc-shaped cover is mounted in the mounting box in a sliding manner; before the electric arc furnace is used for preparing the quartz crucible, the electrode moves downwards to enter the mounting box to extrude the convex block in the fixed pipe; if the tip of the electrode is intact, the bump completely retracts into the fixed tube, so that the rotating assembly controls the mounting box to move out of the downward moving path of the electrode; and if the tip of the electrode is incomplete and part of the convex block cannot completely retract, a retention path of the mounting box prompts repair, so that concentration or dispersion of arc energy caused by electrode loss difference is avoided, and the defects of bubbles generated by excessive melting of quartz sand and unmelted particles formed by insufficient melting are reduced.

The application discloses a field-circuit coupling-based molded case circuit breaker arc energy dissipation prediction system and relates to the technical field of circuit breaker arc energy prediction.The system comprises a multi-modal data acquisition module, a cross-modal feature fusion module, a prediction model construction module, a working condition self-adaptive adjustment module and a prediction output module.The application realizes accurate prediction of double-break molded case circuit breaker arc energy dissipation through multi-modal data acquisition and cross-modal feature fusion.Synchronous acquisition of multi-dimensional feature data is realized through arrayed optical fiber electric field sensors, miniature Hall sensor arrays, hyperspectral imaging units, infrared thermographs and other equipment, covering the full-space field of the arc-extinguishing chamber, and through dynamic weight distribution and physical correlation degree calculation, data heterogeneity among modes is eliminated, a fusion feature vector is generated, the representation capability of arc dynamic behavior is improved, the error between the prediction value and the actual dissipated energy is low, and the problem of poor working condition adaptability of traditional models is solved.

The application discloses a kind of SF6 circuit breaker fault prediction method and system considering the effect of breaking arc, collect breaking arc data and SF6 gas decomposition product content after breaking, in the process of operation and after fault, establish circuit breaker historical breaking data set, build cumulative arc energy-SF6 gas decomposition product content relationship model, obtain the SF6 gas decomposition product content corresponding to different breaking times, breaking current;Establish SF6 gas decomposition product content historical operation data set;Build SF6 gas decomposition product content prediction model based on LSTM, obtain the prediction result of SF6 gas decomposition product content;Establish SF6 gas decomposition product content historical fault data set, build SF6 circuit breaker fault diagnosis model;The prediction result of SF6 gas decomposition product is as the input of SF6 circuit breaker fault diagnosis model, obtains fault diagnosis result, realizes the fault prediction of SF6 circuit breaker.

The application relates to the field of electric power control and electric vehicles, and discloses a high-reliability active and passive integrated protection device which comprises a first conductor, a first fuse body, a second conductor and a first excitation device which are connected in series; the first fuse body is connected in parallel with a first trigger circuit; in a normal working state of the first fuse body, the first trigger circuit is not conductive with the first excitation device; when the first fuse body is fused, the first fuse body disconnects the circuit, or under the action of arc energy or elastic force, the first trigger circuit can be driven to be conductively connected with a signal receiving end of the first excitation device to send a trigger signal to the first excitation device; and the first excitation device disconnects the first conductor according to the received trigger signal. The first excitation device is used as a backup protection of the first fuse body, and the working reliability of the protection device is improved.

The invention provides a welding power source system and method for achieving high-frequency editable pulse current output, and belongs to the field of welding power sources, the welding power source system comprises a TIG welding gun, an oscilloscope and a gas protection device, the TIG welding gun is connected with a high-frequency waveform editing module, the high-frequency waveform editing module is connected with an inductor and an FPGA control panel, the inductor is connected with a multi-output constant current source, and the multi-output constant current source is connected with the oscilloscope. The oscilloscope is connected with the TIG welding gun through a current clamp, and the gas protection device is connected with the TIG welding gun through a gas pipe. According to the welding power supply system and method for achieving high-frequency editable pulse current output, the high-frequency waveform editing module formed by sampling three paths of switching circuits in parallel can provide more waveform selections and more accurate current output on the premise of maintaining stable combustion of an electric arc; a special switch time sequence is matched with synchronous rectification, so that circuit heating can be reduced, the accuracy of current waveforms is improved, heat input can be accurately controlled, arc energy gradient distribution is optimized, and the welding seam quality is improved.

The application discloses a recoil arc-extinguishing cylinder for a solid-phase gas arc-extinguishing lightning protection device, which comprises a top-closed arc-extinguishing cylinder body; a first through hole and a second through hole are arranged on the top of the arc-extinguishing cylinder body; an arc leading mechanism and a gas generator with built-in arc-extinguishing gas pills are arranged on the first through hole and the second through hole respectively; a recoil tube is arranged in the arc-extinguishing cylinder body; the recoil tube is vertically connected to the inner wall of the top of the arc-extinguishing cylinder body, and the recoil tube and the first through hole are in communication with each other. The recoil tube is combined with the arc-extinguishing cylinder, the recoil effect of the recoil tube is utilized to weaken arc energy and reduce the difficulty of solid-phase gas arc-extinguishing; the gas generator utilizes external energy for arc-extinguishing, the recoil tube utilizes lightning energy for arc-extinguishing, and the internal and external energy double synergistic effect is formed to extinguish higher arc energy.

The utility model relates to the antiaging structure technical field of ceramic temperature controller, and disclose an antiaging structure of ceramic temperature controller, including base, the one side fixed connection of base has the antiaging component, the inside fixed connection of base has the damping seal component, the antiaging component includes the fixed connection in the seal pad of base one side, the inboard fixed connection of seal pad has the connecting block, the one side fixed connection of connecting block has silver alloy, the bottom fixed connection of silver alloy has graphite particle dispersion layer, the damping seal component includes the fixed connection in the damping gel of base inside, the top fixed connection of base has the rubber cover, the surface fixed connection of rubber cover has the spring. The antiaging structure of ceramic temperature controller, through the setting of antiaging component, reduced the water vapor permeation to the corrosion of junction and temperature controller internal structure, reduced the ablation of the junction because of arc energy high, improved the stability of product.

The invention discloses a fault current breaking system and method, and the method comprises the steps: enabling a first branch assembly and a second branch assembly to be connected in parallel, carrying out the time sequence control through a controller based on the fault current, adjusting the air gap space of a magnetic circuit device at a first preset time, and reconstructing and generating a reverse voltage, and controlling a transistor device in the second branch assembly to be switched on and realizing current rising to a first threshold value, simultaneously reducing the current in the first branch assembly to a second threshold value, controlling the mechanical switch to be switched from the opening preparation state to the opening starting state at a second preset time, and controlling the mechanical switch to be switched from the opening preparation state to the opening starting state at a second preset time, according to the invention, the fault current can be rapidly transferred from the first branch assembly to the second branch assembly before the mechanical switch starts to be opened, so that the technical problem of high breaking failure rate caused by over-high arc energy due to breaking time sequence lag is solved.