244 results about "Electrification" patented technology

The utility model discloses a soft start system based on excitation current reduction, which is characterized in that a time relay mainly controls the switching of a live wire between a power resistor and an alternating current contactor, the power resistor magnetizes a transformer at the moment of electrification, and the alternating current contactor is connected into a circuit by the time relay after the magnetization is completed; and after the power resistor is short-circuited, the circuit is cut out, so that the purpose of suppressing the excitation inrush current is finally achieved, the excitation effect caused by voltage abrupt change at the power-on moment of the isolation transformer can be avoided, and the excitation abrupt change of the isolation transformer during power-on is effectively reduced.

The invention relates to an electrified railway traction power supply system which is low in investment, is smooth for obtaining a current and is convenient to maintain. Rail webs outside two steel rails of a rail are respectively provided with one insulating strip; then a power supply strip is respectively arranged outside each insulating strip; each vibration inductive switch is connected in series with a sound inductive switch and a light-operated inductive switch; one ends of the connected switches are connected to the power supply strips at one sides; the other ends of the connected switches are connected with feed lines; the power supply strips at the other sides are connected with return wires. Power receiving frames at a headstock side and a tailstock side of a train are in contact with the power supply strips; when the train passes through a zone, the vibration inductive switches are closed, the sound inductive switches are closed, the light-operated inductive switches are closed, the power supply strips in the zone supply power, the power receiving frames of the train obtain a current and the train runs; when the train runs into a next power supply zone, the next power supply section is powered on, and power supply is stopped in the power supply zone. The aims of low investment, smoothness for obtaining the current and convenience for maintenance are fulfilled.

The method is applied to the fields of train regenerative braking energy utilization, stray current and rail potential treatment and the like in electrified rail transit, especially urban rail transit. The invention provides a direct-current traction power supply system capable of reducing the energy storage capacity of a super capacitor of urban rail transit, which is combined with a super capacitor energy storage device of the urban rail transit and supplies power to a power electronic device for treating stray current and rail potential by utilizing regenerative braking energy of a train. The super-capacitor energy storage device has the following advantages that on one hand, the energy storage capacity of the super-capacitor bank in the super-capacitor energy storage device between train braking and traction can be reduced, and the utilization efficiency of regenerative braking energy stored by the super-capacitor bank is improved; on the other hand, the problems of stray current, rail potential and the like in the system can be solved from the source, and the power supply distance of a traction substation is remarkably increased. Therefore, the direct-current traction power supply system is of great significance to green and safe operation of urban rail transit.

An electrified vehicle includes a chassis having a longitudinal length of at least 20 feet and an energy storage system. The energy storage system includes an enclosure coupled to the chassis, a battery pack positioned within the enclosure, a power distribution system positioned within the enclosure, a first wiring harness positioned entirely internal to the enclosure where the first wiring harness electrically couples the battery pack to the power distribution system, and a second wiring harness. A first portion of the second wiring harness is positioned internal to the enclosure and a second portion of the second wiring harness is positioned external to the enclosure. A maximum external length of any cable of the second wiring harness external to the enclosure is less than 25% of the longitudinal length.

The utility model relates to vacuum sealing machine technical field discloses a kind of heating wire protection device and vacuum sealing machine of vacuum sealing machine, device includes: ac interface end, microswitch, lid detection circuit, drive circuit, heating wire and control module.Microswitch is set on the lid of vacuum chamber, lid detection circuit is connected with microswitch, lid detection circuit is connected with control module;Drive circuit is connected with the output end of control module, and drive circuit is connected with ac interface end and heating wire respectively;Lid detection circuit exports open lid signal when determining the lid opening of vacuum chamber;Control module receives open lid signal, exports cut-off signal;Drive circuit receives cut-off signal, disconnects ac interface end and heating wire.Can avoid the risk of heating wire bare electrification, solve heating wire electrification problem;And based on the heating wire of alternating current power supply work, improve heating speed, improve sealing efficiency, greatly reduce equipment cost, reduce power loss and heat generation.

The utility model discloses a special-shaped wiring terminal strip of prevent mistaken plug, the utility model relates to electrical connection equipment technical field. This special-shaped wiring terminal strip of prevent mistaken plug contains the mounting base, the mounting base top is provided with the wiring post, the wiring post rear end is provided with a plurality of wiring interfaces, the wiring interface front is provided with the electrification column, the wiring interface is provided with the wiring connector inside, through set trapezoid slot, cambered surface slot, cross locating rib etc. Structure, can better cope with high density wiring and quick plug -pull demand, carry out positioning and limit to the plug from multiple dimensions, reduce mistaken plug risk greatly, improved the reliability of prevent mistaken plug, and can through electrification column and contact assembly with insulating layer, when wiring, will not default electrification, avoided the safety accident that causes because mistaken electrification in the wiring process, the safety in the operation process was enhanced significantly.

This invention provides a method and system for assessing the electrification potential of heavy-duty vehicles based on remote monitoring data. It utilizes trajectory time intervals, speed changes, and stopping behavior to segment the journey; and calculates fuel consumption, average speed, and NO based on data collected by high-precision sensors. x Emissions, as a crucial parameter for assessing electrification potential, are used to preserve the heterogeneity of cargo weight, driving behavior, and route selection across different freight tasks within the algorithm. A method is proposed to integrate multiple economic factors, including purchase costs, battery swapping infrastructure construction and operation expenses, fuel savings, carbon trading revenue, nitrogen oxide emission reduction subsidies, and detour time costs, into a unified measurement system. A four-dimensional state space—vehicle-time-route-battery—is established, leveraging a high-speed road network geographic information system to maximize the optimization potential of battery swapping detours while satisfying time window constraints. The model is transformed into a mixed-integer programming solution by using binary route selection variables and integer variables, providing strong support for electrification replacement.

The invention relates to a method and system for generating steam and electricity, comprising a first electrical heat production system (20) and a second heat and electricity production system (30) comprising: (a) a heat exchanger (32) connected to a water-supplied conduit (2), (b) a thermodynamic machine (33) producing hot gases circulating inside the heat exchanger (32) to transfer heat to the water circulating in the exchanger, (c) a thermal storage system (34) coupled to the circuit (330) of the thermodynamic machine (33), (d) a heating device (340) for the thermal storage system, and (e) an electrical generator (36) driven by a turbine of the thermodynamic machine. The heat required for the thermodynamic machine to operate and produce hot gases is supplied by the thermal storage system during its discharge phase. Figure 1.

This invention relates to a power generation device and method based on gas-liquid two-phase flow, comprising: a liquid container, a gas flow inlet, a liquid inlet, a dividing chamber, a reaction chamber, and a conductive electrode; the gas flow inlet is connected to the gas flow inlet of the dividing chamber; the liquid inlet has one end sealed to the liquid inlet of the dividing chamber and the other end connected to the solution to be reacted in the liquid container; in the dividing chamber, the gas flow entering through the gas flow inlet divides and atomizes the solution to be reacted entering through the liquid inlet, forming a gas-liquid two-phase flow; the reaction chamber is connected to the gas-liquid outlet of the dividing chamber, and the gas-liquid two-phase flow enters the reaction chamber through the gas-liquid outlet; in the reaction chamber, the gas-liquid two-phase flow undergoes a frictional electrification reaction with the inner wall of the reaction chamber, forming a charged electric-liquid two-phase flow; the conductive electrode is disposed at the outlet of the reaction chamber and is used to acquire the charge in the charged electric-liquid two-phase flow.

The invention discloses an electrified flexible source load adjustable potential evaluation method considering cold load characteristics, and particularly relates to the technical field of electric power system evaluation and control, and the method comprises the steps: S1, obtaining the environment and equipment parameters of a cold load monomer, S2, constructing an electric-thermal coupling refined model considering a comfort level elastic interval, and S3, constructing an electric-thermal coupling refined model considering a comfort level elastic interval; the method comprises the steps of S1, obtaining a plurality of monomers, S3, calculating the adjustable potential of the monomers and generating a constraint envelope line representing the dynamic attenuation characteristics of the monomers, S4, obtaining a regional cluster potential evaluation result through aggregation according to the spatial dimension and the time scale, and S5, uploading the result to a power grid dispatching system for security defense and intelligent dispatching of a power grid of 750 kilovolts and above. According to the method, accurate quantification and dynamic representation of the adjustable potential of the cooling load are realized, the blank of cognition of a large power grid on the distributed cooling load is filled, and the flexible resource utilization level and the operation safety of the power grid are remarkably improved.

The application relates to the technical field of protective devices, and discloses a device for safely protecting the electrification of copper bar end heads, which comprises a copper bar end head, a protection mechanism arranged on the copper bar end head, the protection mechanism comprising an outer left protection shell and an outer right protection shell, flexible protection sleeves connected to the inner walls of the outer left protection shell and the outer right protection shell, inner arc-shaped accommodating cavities formed in the flexible protection sleeves, and the inner arc-shaped accommodating cavities being shaped to accommodate the copper bar end heads. The device for safely protecting the electrification of copper bar end heads is provided with the protection mechanism, external physical protection is provided by the hard materials of the outer left protection shell and the outer right protection shell, the inner arc-shaped accommodating cavities and the sealed hollow cavity structure of the flexible protection sleeves are combined to realize the flexible adhesion and sealing of the copper bar end heads, the flexible supporting columns disperse the inflation pressure along the radial direction to avoid local deformation, a double-protection system is formed, and the structural stability is improved.

The utility model discloses a constructional engineering template fixing device, relates to fixing device technical field, including: base plate, fixed plate, electrifying box, the bottom of electrifying box is equipped with the clamping pole, the output end of clamping pole is equipped with the clamping plate, the outer wall of electrifying box is equipped with the electric wire, the outer wall of fixed plate is equipped with the electric slide rail, the electric slide rail is equipped with the electric slide rail, and the electric slide rail is equipped with the clamping pole. A linkage rod is installed at the output end of the electric sliding rail, and a limiting plate is installed on the outer wall of the linkage rod. By installing the fixing mechanism, the formwork is placed on one side of the fixing plate, the two sets of clamping plates are attached to the top and the bottom of the formwork, the position of the formwork is fixed, meanwhile, the two sets of limiting plates are made to move to the two sides of the formwork, the two sides of the formwork are limited, and therefore the formworks of different sizes can be conveniently fixed; bolt installation is not needed, and installation convenience is improved.

The application relates to the field of cracking, and discloses a high-electrification-rate cracking method, which comprises the following steps: a gasification stage, in which raw materials and steam are preheated and mixed to generate cracking materials; a cracking stage, in which combustion-supporting agents are electrically heated, fuel gas is combusted, and the cracking materials output from the gasification stage are cracked into final products; and a quenching stage, in which the final products generated in the cracking stage are cooled. By using an electric heater and optimizing a process flow, the fuel gas consumption is maximally reduced, and the carbon dioxide emission is reduced without changing the existing process flow.

The invention relates to the technical field of artificial intelligence, in particular to a hybrid parameter freezing method and related equipment for power generation equipment data, and the method comprises the steps: obtaining a pre-trained basic large model and an associated functional layer; power plant professional fields are divided according to gas turbines, electricity, chemical water and the like, independent adaptive modules are created for all the fields, and the associated functional layer is connected through preset interfaces; obtaining a data set of power generation equipment in each field, training a corresponding adaptation module and an associated functional layer, and meanwhile, freezing basic large model parameters and adaptation modules not in the field to obtain expert models in each field; and inputting real-time power generation equipment data into the basic large model, and loading the expert model in the corresponding professional field to execute a data analysis task. Through field adaptation and parameter freezing design, the analysis pertinence and accuracy of the model for data in each professional field of the power plant are improved, and the method is adaptive to the multi-scene equipment data analysis requirements.

The utility model discloses an outdoor modularized vacuum circuit breaker for an electrified railway, which comprises a box body, a transmission module, a monitoring and control unit, an insulating module, an insulating pull rod and a solid-sealed polar pole, wherein the transmission module and the monitoring and control unit are arranged in the box body; the insulating module is arranged at the top of the box body; the monitoring unit is used for monitoring the running state of each component in real time; the transmission module comprises a transmission assembly and an opening assembly and a closing assembly which are respectively connected with the transmission assembly, the transmission assembly drives the opening assembly to execute opening operation and drives the closing assembly to execute closing operation, and the main control board of the monitoring and control unit is in communication connection with a driving part of the transmission assembly. The device is reliable in structure, adopts modular design, can be quickly disassembled, assembled and maintained, reduces the operation and maintenance cost, is high in reliability, and adapts to outdoor severe environments and frequent operation; moreover, the circuit breaker is good in vibration resistance and sealing performance, guarantees long-term stable operation, integrates monitoring and remote control, and remarkably improves the equipment performance and the operation and maintenance efficiency.

The utility model belongs to the technical field of circuit protection, and particularly relates to an anti-overload structure of micro-integrated equipment, which comprises an overload protector body, a reset rod and connecting contact pieces, the reset rod is movably inserted into an inner cavity of the overload protector body, the connecting contact pieces are arranged at the bottom of the overload protector body and are symmetrically arranged, and the reset rod is movably inserted into the inner cavity of the overload protector body. The overload protector comprises an overload protector body, an overload detection iron sheet is arranged on the surface of the overload protector body, a resistance heating wire is movably arranged on the surface of the overload protector body, the two ends of the resistance heating wire are connected with mounting seats, mounting grooves are formed in the positions, located at the two ends of the overload detection iron sheet, of the surface of the overload protector body, and the mounting seats are fixed in the mounting grooves through countersunk bolts. According to the overload protector, the resistance heating wire is installed on one side of the overload detection iron sheet, the resistance heating wire generates heat after being electrified, the heat is transmitted to the overload detection iron sheet to enable the overload detection iron sheet to deform, and therefore overload detection can be actively carried out on the overload protector to detect whether the function of the overload protector is normal or not.

The utility model belongs to the technical field of vulcanizing machines, and particularly relates to a plate vulcanizing machine heating device which comprises a box body, a baffle plate is fixedly arranged on the upper surface of the box body, a soaking plate is fixedly arranged on the inner side of the baffle plate, a heating plate is movably connected below the soaking plate, a heating wire is movably arranged below the heating plate, and the heating wire is arranged below the box body. A liquid inlet pipe is arranged on the front side of the vapor chamber, and a liquid outlet pipe is arranged on the other side of the vapor chamber. Heat is generated after the heating wire is electrified, the heating plate is heated, the heat is evenly diffused to the vulcanizing machine through the soaking plate, hot spots are eliminated, it is ensured that a vulcanizing mold or a sizing material is evenly heated, the product quality is improved, heat is evenly distributed through heat conduction oil, local overheating is avoided, and it is ensured that the flat vulcanizing machine is evenly heated; and through the heat dissipation barrel and the heat dissipation fins, frequent starting and stopping of the heating wire can be reduced, and the service life of parts is prolonged.

The utility model relates to the technical field of spine external support, and discloses novel environment-friendly wastewater heavy metal removal equipment, which comprises an equipment main body, the equipment main body comprises a removal module, the removal module is arranged on a bottom plate, the removal module comprises a removal barrel, the removal barrel is movably arranged at the top end of the bottom plate, and the removal barrel is arranged on the bottom plate. The removal barrel is used for filling and temporarily storing wastewater to be treated; the driving gear is fixedly mounted on the outer surface of the removing barrel, and the driving gear is used for directly driving the removing barrel to perform rotary centrifugation; the motor is fixedly installed on one side of the top end of the bottom plate, a driving wheel at the top end of the motor is connected with the driving gear in an engaged mode, and the motor is used for directly providing power needed by high-speed rotation and centrifugation for the driving gear; by arranging the removal module, the removal barrel adsorbs heavy metal particles in the wastewater to the surface of the barrel wall, an electrostatic adsorption net generates static electricity after being electrified, and the electrostatic adsorption net has particle adsorbability, so that the heavy metal particles are adsorbed and removed.

Provided is an electrification device equipped with a plasma actuator, wherein the plasma actuator: comprises a dielectric body, a first electrode provided on a first surface of the dielectric body, and a second electrode disposed across the dielectric body from the first electrode; by applying alternating-current voltage between the first electrode and the second electrode, generates an induced flow along an exposed portion not covered with the first electrode of the first surface of the dielectric body from an edge portion of the first electrode; and is disposed such that the induced flow is directly supplied to the surface of the body to be electrified, and applies direct-current voltage between the first electrode and the body to be electrified.

The invention discloses a hybrid power well cementation electric control system architecture, which is mounted on a well cementation truck / pry, and comprises a power input module and three parallel power supply accesses: one engine is connected with a generator, and the generator is connected to a direct current bus through a first controllable rectifier; the two power batteries are connected to a direct-current bus through a direct-current feed unit; the third external power grid is connected to the direct current bus through the alternating current feed unit and the second controllable rectifier in sequence; the power output module comprises a DC / AC driver and a DC / DC power supply which are powered by a DC bus, and the DC / AC driver respectively drives a main drive motor and an auxiliary drive motor; and the control module comprises a PLC control system powered by a DC / DC power supply and an EMS management system in communication connection with each component, and the EMS management system regulates and controls the electric energy output proportion of the three power supply paths in real time. Compared with existing diesel-driven well cementation equipment, the diesel-driven well cementation equipment is high in integration level, high in equipment efficiency and high in electric / automatic degree.

The invention relates to a slot wedge (142) for a rotor (116) in an electric machine (102), comprising a wedge body (148) and a cover element (150), wherein the wedge body (148) extends between a radially inner end (162) and a radially outer end (158) in such a way that a tapering portion (160) is formed which extends from the radially outer end (158) to the radially inner end (162); the cover element (150) is provided on the radially outer end (158) of the wedge body (148); and the wedge body (148) is made of a first material, and the cover element (150) is made of a second material which has a lower degree of rigidity than the first material. The invention also relates to a rotor (116), to an electric machine (102), and to an at least partly electrified vehicle (100).

The invention discloses a partial discharge risk assessment method based on a voltage waveform correction coefficient, and relates to the technical field of electrified traffic, and the method mainly comprises the steps: carrying out the fitting of PDIV measurement values obtained in different testing environments under the excitation of the same waveform voltage and the cumulative failure probability based on Weibull distribution, obtaining a PDIV calculation value under any cumulative failure probability; respectively calculating a square wave voltage excitation PDIV calculation value and a power frequency sine wave voltage excitation PDIV calculation value corresponding to the target cumulative failure probability in each group of test environments; respectively constructing fitting functions of a square wave voltage excitation PDIV calculation value and a power frequency sine wave voltage excitation PDIV calculation value with respect to environmental parameters; and acquiring a voltage waveform correction coefficient according to the ratio of the fitting function, and substituting into a preset risk judgment model to output an evaluation result. According to the method, the PDIV value of the real square wave working condition can be accurately deduced only through conventional power frequency sine wave measurement.

A smelting method of ultra-low nitrogen steel comprises the following steps: (1) pretreatment of molten iron: carrying out deep desulfurization on the molten iron by adopting a KR method until S is less than or equal to 0.0020 wt% and S in a steel ladle after tapping is less than or equal to 0.0012 wt%; (2) converter smelting, wherein Ar gas bottom blowing stirring is adopted in the whole process; (3) LF refining is conducted, the bottom blowing gas flow at the initial stage of refining is smaller than or equal to 3.0 Nl / (min.t steel), and the electrode electrifying power is smaller than or equal to 70 kW / t steel; the bottom blowing gas flow is smaller than or equal to 7.0 Nl / (min.t steel) in the later stage of electrification, and the electrification power is smaller than or equal to 130 kW / t steel; 4-10 kg of active lime is added to each ton of steel, and the content of CaO in ladle top slag is controlled to be 50-55 wt% after LF refining is finished; and (4) RH refining: starting a vacuum pump of an RH refining furnace for exhausting, before the pressure in a vacuum chamber is reduced to 1kPa, controlling the flow of circulating gas to be 6-8N1 / (min.t steel), reducing the pressure in the vacuum chamber to be less than or equal to 1kPa, and increasing the flow of the circulating gas to be 10-12N1 / (min.t steel). According to the method, on the premise that the sulfur content of the molten steel is smaller than 20 ppm and the smelting cost is not increased, the ultralow-nitrogen and ultralow-sulfur product with the nitrogen content smaller than 30 ppm can be obtained.

The utility model relates to the technical field of water level measurement, and discloses a water level probe, a measuring device and electrical equipment. The water level probe comprises a probe body, a water containing gap is formed between a resistance piece and a conductive piece, and water in the resistance piece, the conductive piece and the water containing gap can form a slide rheostat structure; the shell sleeves the periphery of the probe body; and the shell is made of a waterproof, moisture-permeable and insulating material. The shell on the periphery of the probe body is made of waterproof, moisture-permeable and insulating materials, the water levels inside and outside the shell are always kept consistent, and the effective resistance value of a slide rheostat structure formed by water in the resistor piece, the conductive piece and the water containing gap can change along with the water levels; the purpose of continuously monitoring the water level is achieved; and the shell is made of a waterproof, moisture-permeable and insulating material, so that water in the water level probe and water outside the water level probe cannot form a continuous path, the whole water body is prevented from being electrified, and the measurement safety is improved.

The utility model discloses an LTD driving system, a pulse power device and a steep pulse ablation instrument, which are applied to the technical field of steep pulse ablation and are used for solving the problems of unstable steep pulse high-voltage output amplitude and large rising edge and falling edge time deviation of the pulse power device in the prior art. Comprising the following steps of: synchronously generating a pulse magnetic field in a magnetic core when primary coils of the transformers of all stages are synchronously electrified in a pulse manner through a standardized coil winding mode and unified relative position arrangement of the transformers in the LTD driving system, and finally, synchronously inducing pulse voltage in secondary coils of the transformers of all stages; and therefore, the amplitude of the steep pulse after the pulse voltage induced by each stage of transformer is superposed is stable, and the time deviation of a rising edge and a falling edge is small.

A power generation device (1) is provided with: a power generation section (10) having an electret (2) having a first electrification surface (21) and a second electrification surface (22), a first electrode (31) formed on the first electrification surface (21), and a second electrode (32) formed on the second electrification surface (22); and at least one of an electricity storage section (41) and an output section (42) electrically connected to the power generation section (10). The electret (2) is an electret formed by subjecting an electret material containing an inorganic dielectric having a band gap energy of 4 eV or more to polarization treatment. At least one of the first electrode (31) and the second electrode (32) is disposed on at least one of the corresponding first electrification surface (21) and the second electrification surface (22) in a state in which it becomes a part of a current collecting surface (20) exposed.

The present invention relates to an excavator motorization module and an excavator equipped therewith, comprising: a housing that can be attached to the counterweight mount portion of an excavator; an electric motor installed in the housing; a motor-hydraulic pump installed in the housing that generates hydraulic pressure for the operation of a work mechanism using power generated by the electric motor; and an electrification controller that is electrically connected to the main controller of the excavator and controls the operation of the electric motor based on a control signal from the main controller.

The invention relates to a rotary transformer (120) for providing an excitation current for a rotor (118) in an electric machine (102), in particular an externally excited synchronous motor, comprising a transformer stator and a transformer rotor, wherein the transformer stator and the transformer rotor are arranged in an interior (133, 134) of the rotor (118), wherein the transformer stator has a stator magnetic core, wherein the transformer rotor has a rotor magnetic core, wherein the stator magnetic core and / or the rotor magnetic core comprise multiple ring segments (136a-c) distributed in a circumferential direction, wherein elongated gaps (141, 143) are formed between neighbouring ring segments (136a-c), in which one or more coolant channels (142, 144) are arranged, with at least regions extending in an axial direction and for guiding a coolant. The invention also relates to a rotor (118), an electric machine (102) and an at least partially electrified vehicle (100).

Electrification device for an electric dust collector (1000) comprising an electrification module (1100, 3100) for generating ions in flowing air, wherein the electrification module (1100, 3100) comprises: a high-voltage peak (1130, 3130) having at least one discharge peak (1131) configured to emit the ions in a direction opposite to a flow direction of the air; a conductive plate (1120, 3120) arranged around the discharge tip (1131) and configured to generate an electrical potential difference to the discharge tip (1131) of the high voltage peak (1130, 3130); a lower frame (1140, 3140) that mounts the conductive plate (1120, 3120) and the high-voltage peak (1130, 3130); and an upper frame (1100, 3110) coupled to the lower frame (1140, 3140), wherein the upper frame (1100, 3110) covers the conductive plate (1120, 3120) and the high voltage peak (1130, 3130) so that the discharge peak (1131) is exposed to the outside; characterized by the fact that the upper frame (1100, 3110) has an upper outer frame (1111) which provides a lower frame coupling part for coupling with the lower frame (1140, 3140), and an upper inner frame (1112) which is arranged inside the upper outer frame (1111), wherein the lower frame (1140, 3140) provides a coupling hook (1141a) which corresponds to the lower frame coupling part.

The invention discloses a power-off locking eye electricity feedback electromagnetic valve which comprises a mounting base, a pressing cover is arranged on the mounting base, a feedback rod is in linkage with a movable iron core, a triggering structure of a circular truncated cone and a microswitch is matched, electric signals corresponding to the power-on and power-off state of the electromagnetic valve can be accurately output, and real-time feedback of the working state of the electromagnetic valve is achieved. A control system can be directly connected to complete automatic monitoring, manual detection and confirmation are not needed, the labor cost is reduced, the problem of troubleshooting lagging is avoided, the intelligent requirement of modern industrial production is met, the magnetic steel and the movable iron core are matched to achieve the power-off locking function, the locking state of the large valve can be kept without continuous power-on, and the service life of the large valve is prolonged. The electromagnetic valve consumes electric energy only during state switching, the running power consumption of the electromagnetic valve is greatly reduced, the development trend of energy conservation and consumption reduction is met, meanwhile, the problem of element heating caused by long-term electrification of a traditional electromagnetic valve is solved, the overall service life of the electromagnetic valve is effectively prolonged, and the working stability of the electromagnetic valve is effectively improved.