2275results about "Electric component structural association" patented technology

The invention discloses a transformer equipment oil leakage monitoring method and system based on image recognition, relates to the technical field of image processing, and effectively eliminates static background interference by constructing a standardized image sequence S (t), performing gray gradient analysis and pixel feature extraction, recognizing candidate oil spot areas and constructing a disturbance active score Sx. The edge structure and the morphological stability coefficient of the dynamic oil stain suspected area are further extracted, and the credible level quantitative judgment of the dynamic oil stain suspected area is realized by integrating the characteristic indexes and the morphological stability coefficient, so that the dynamic identification capability and the anti-interference capability are realized; the oil leakage identification accuracy and the system automation risk response capability in a complex environment are improved, false alarm and missing alarm are effectively avoided, and the operation safety of equipment is guaranteed.

The invention discloses an acquisition and processing system and method for dry data of a transformer, and relates to the technical field of data processing. Comprising the following steps: step 1, multi-source data real-time acquisition and edge preprocessing; 2, constructing a drying end point prediction model; 3, constructing a composite objective function, and solving the composite objective function by adopting a multi-objective evolutionary algorithm; 4, performing real-time correction and feedback; according to the method, key parameters in the drying treatment process are monitored in real time, an accurate drying end point prediction model is automatically constructed, heating and air exhaust curves are dynamically optimized according to the real-time working condition and the production strategy, and traditional manual blind judgment and static presetting are replaced; and meanwhile, the operation energy consumption is remarkably reduced, the optimal balance of the energy consumption and the production efficiency is realized through a multi-objective evolutionary algorithm and an online Kalman filtering correction closed loop mechanism, the drying quality and the equipment safety are improved, the energy cost is greatly saved, and the dual requirements of modern intelligent manufacturing for flexibility, energy conservation and consumption reduction are met.

The invention discloses a high-safety station explosion-proof transformer and a using method, and relates to the technical field of transformers. The explosion-proof transformer comprises a transformer body arranged in an explosion-proof shell, a plurality of cooling fins are arranged on the side portion of the transformer body, the explosion-proof transformer further comprises a pressure relief unit, the pressure relief unit comprises a plurality of pressure relief boxes arranged in the explosion-proof shell, and a pressure relief assembly is arranged in each pressure relief box; a pressure monitoring sensor for monitoring and releasing the internal pressure of the transformer main body is arranged in the pressure relief assembly, and an adjusting assembly and a heat dissipation assembly are arranged on each pressure relief box. The transformer has the advantages that multi-point pressure monitoring can be carried out on the interior of the transformer body, whether high voltage occurs in the transformer body or not is monitored in real time, targeted pressure relief and explosion prevention can be carried out on a high-voltage part after the high voltage is monitored, the heat dissipation range and the heat dissipation efficiency can be improved in a targeted mode according to the pressure relief condition, and the heat dissipation efficiency is improved. Synchronous explosion-proof treatment of the inside and the outside is realized, and the explosion-proof safety is higher.

According to the intelligent fire extinguishing system for the transformer, internal and external data of the transformer are collected in real time through a sensor module, the collected data are preprocessed through a data processing and model module, and a large model architecture based on Transform and a multi-head self-attention mechanism are adopted; the current temperature state and the future temperature change trend of the transformer are predicted in real time, risk assessment and anomaly detection are carried out, multi-stage temperature threshold values are set in the system, real-time data processing and model optimization are achieved through an edge computing and cloud computing cooperation module, the response speed and prediction accuracy of the system are improved, and the system reliability is improved. The infrared monitoring module monitors the temperature change and the fire condition outside the transformer in real time and accurately detects a fire or an abnormal high-temperature area, and when the fire is detected or a dangerous-level temperature early warning is received, the fire extinguishing module starts the non-pressure-storage fire extinguisher, sprays a fire extinguishing agent and rapidly extinguishes a fire, so that the safety and reliability of the transformer are enhanced, and the safety of the transformer is improved. And the operation cost is reduced, and the application prospect is wide.

The invention discloses a load-variable ultra-large-capacity dry-type transformer, and relates to the technical field of dry-type transformers, the load-variable ultra-large-capacity dry-type transformer comprises three groups of main iron core columns and three groups of auxiliary iron core columns, the section of each main iron core column is in a stepped shape, and three layers of amorphous alloy belts are laminated in each main iron core column; the thickness of the middle layer of the three layers of amorphous alloy belts is set to be 1.2-1.5 times that of the two side layers, and independent lap joint pieces are arranged at the joints of the lamination sets in the auxiliary iron core column. The stepped sections of the three groups of main iron core columns are combined with the magnet yokes with thin tops and thick bottoms, so that the magnetic flux density is uniformly distributed, the capacity of a single column is improved, the problems that the capacity of a single traditional dry-type transformer is limited and the whole transformer needs to be replaced during capacity expansion are solved, the occupied area is reduced through modular splicing, the capacity of a single group of iron core columns is increased, and the no-load loss is reduced.

The invention discloses a transformer explosion-proof protection device suitable for an extreme environment, and belongs to the field of oil-immersed transformers, the transformer explosion-proof protection device comprises a mounting rack, the upper surface of the mounting rack is fixedly connected with a transformer body, and the front side and the rear side of the upper surface of the transformer body are provided with a second binding post and a first binding post respectively; the front side and the rear side of the transformer body are fixedly connected with cooling fins. When the pressure in the transformer body reaches a certain threshold value, the piston pushes the sealing cover to move upwards, the sealing cover is arranged, the situation that the activated carbon plate is exposed in the natural environment for a long time, a large amount of dust and impurities are attached to the surface of the activated carbon plate, and consequently the activated carbon plate is blocked is avoided, and meanwhile the activated carbon is prevented from losing efficacy due to excessive dust adsorption; the efficiency of absorbing hydrogen and methane is reduced, purification and absorption are carried out through the activated carbon plate, hydrogen and methane in the gas are absorbed, pollution-free emission is carried out, and the influence of hydrogen and methane on the surrounding environment is avoided.

A magnetic component and a switch power supply device are disclosed. The magnetic component includes a magnetic core and at least three windings, the magnetic core including at least three winding columns, at least one side columns, a first cover plate and a second cover plate opposite to each other, wherein the at least three winding columns are sequentially arranged in adjacent, the first cover plate and the second cover plate are respectively at upper parts or lower parts of the at least three winding columns and the at least one side column to form a closed magnetic flux loop; the at least three windings are wound on the at least three winding columns, respectively; wherein magnetic flux direction of the middle winding column in adjacent three winding columns is opposite to magnetic fluxes direction of the other two winding columns in adjacent three winding columns.

The invention relates to the technical field of transformers, in particular to a high-safety transformer which comprises a transformer body and a monitoring mechanism, and the monitoring mechanism comprises a processor, a base, a control core, a driving wheel and a visual assembly. The base is provided with a containing cavity, an input flow channel and an output flow channel, the input flow channel and the output flow channel extend to the containing cavity, and the other ends of the input flow channel and the output flow channel communicate with an oil tank. A filtering assembly is arranged in the output flow channel, and the visual assembly is embedded in the inner wall of the output flow channel. The control core is rotationally matched with the containing cavity and provided with a radial through hole, and a control rod is arranged in the radial through hole in a sliding fit mode. The driving wheel is rotatably matched with the base. One end of the control rod is eccentrically hinged to the driving wheel. The visual component is used for acquiring image data of the surface of the filter component, and the processor is used for evaluating the impurity content in the insulating oil according to the impurity quality of the surface of the filter component. According to the utility model, the automatic monitoring of the insulating oil can be realized in the operation process, prompts can be given out in time, and the safety supervision strength is effectively improved.

The invention discloses an amorphous alloy transformer with a buffer protection function, and relates to the technical field of transformers, a plurality of protection springs are installed at the bottom end of the inner side of an outer fixing integration box at equal intervals, an inner fixing treatment box is fixed to the top ends of the protection springs, and a top sealing fixing plate is fixed to the top end of the inner fixing treatment box; the fixed dampers are symmetrically installed at the bottom end of the inner side of the outer fixed integration box, and the elastic rubber blocks are installed at the top ends of the fixed dampers. The problems that in the prior art, due to factors such as magnetic field changes, electromagnetic force imbalance and uneven cooling speeds of silicon steel sheets and windings, equipment generates large-amplitude vibration and noise are effectively solved; according to the invention, the equipment is prevented from generating resonance reaction due to the influence of vibration and noise, so that the protection treatment of transformer parts is realized, the damage speed of the parts is reduced, the circulating cooling and the three-section linkage cooling are matched, the temperature of the transformer during continuous operation is effectively reduced, and the service life of the transformer during operation is prolonged.

The invention relates to the technical field of transformers, in particular to a transformer with a high-temperature early warning device, which comprises a base and a transformer body fixedly mounted on the base, and further comprises a temperature control system, and the temperature control system is used for monitoring the temperature of the transformer body and dynamically analyzing the transformer body. A plurality of sets of cooling fins are fixedly connected to the outer portion of the transformer body, and a plurality of sets of mounting frames are fixedly connected to the base. In the invention, aiming at the defect of incomplete monitoring of a traditional temperature sensor, the temperature control system can realize comprehensive temperature monitoring and dynamic operation analysis of the transformer body, accurately capture internal complex temperature field distribution, and avoid the problem of insulation aging acceleration caused by local high-temperature leak detection; compared with an existing single threshold value control mode, intelligent early warning is achieved through a dynamic analysis technology, a control strategy can be adjusted according to real-time temperature changes, and the limitation that a traditional method lacks state perception is overcome.

The invention discloses a low-loss double-reverse-star rectifier transformer for a hydrogen production system, and relates to the technical field of double-reverse-star rectifier transformers, the low-loss double-reverse-star rectifier transformer comprises a box body, cooling fins, a coil, a connector lug, a supporting box and a cooling module, the cooling fins are installed on the outer wall of the box body, the coil is installed on the inner wall of the box body, the connector lug penetrates through the top of the box body, and the supporting box is arranged in the box body. One end of the connector lug is connected with the outer wall of the coil, and a supporting box is installed on the outer wall of the box body. The oil pump is started to suck transformer oil in the box body into the continuous bow-shaped pipe, at the moment, the first fan is started to generate wind power to blow to the surface of the continuous bow-shaped pipe, so that the transformer oil in the continuous bow-shaped pipe is cooled, and the cooled transformer oil enters the box body again through the discharge head; at the moment, a first motor rotates to drive a first beating head to rotate, the first beating head rotates to drive a T-shaped frame to move, the T-shaped frame moves to drive a first spring to move, and the first spring moves to enable the T-shaped frame to drive a ram to move.

The invention belongs to the technical field of transformer heat dissipation control, and particularly discloses a transformer operation intelligent heat dissipation control system, which comprises a heat dissipation equipment layout module, a temperature monitoring module, a hot spot identification module, a hot spot diffusion analysis module, an airflow control module and an execution feedback module which are sequentially coupled and connected, an infrared thermal imaging sensor array and a fan group are arranged in a transformer according to heat source distribution, surface temperature distribution is collected in real time through the infrared thermal imaging sensor array, and a hot spot area and the diffusion direction of the hot spot area are recognized; and upstream, midstream and downstream fans are selected, and a directional relay cooling airflow chain is constructed through time sequence difference pulse and rotating speed hierarchical control, so that prospective intervention on a current hot spot and a potential diffusion path is realized, heat dissipation control has local accurate regulation and control capability with dynamic evolution characteristics, and the fan energy consumption is reduced while the heat dissipation efficiency is improved.

The invention provides a self-monitoring transformer, and belongs to the technical field of transformers. Wherein the piston is arranged on the first reference pipe, and the piston rod penetrates through the sealing plate. The filter plate is arranged in the first reference pipe. The piston rod is provided with a conveying flow channel, and the area between the piston and the filter plate is communicated with the conveying flow channel. A first one-way assembly is arranged in the conveying flow channel. A second one-way assembly is arranged at the end, away from the sealing plate, of the first reference pipe. The plug rod is driven by the driving assembly in a reciprocating mode. The visual assembly is arranged in the first reference tube. The processor is used for judging the health degree of the insulating oil in the transformer body according to the image data acquired by the visual assembly. The transformer insulating oil monitoring system can continuously and autonomously monitor the actual condition of the transformer insulating oil, avoids the defects of manual monitoring, and effectively improves the operation safety of the transformer.

The invention relates to the technical field of transformers, and discloses a high-stability transformer which comprises a base support, an iron core and a winding, clamping plate assemblies are fixedly installed on the front side and the rear side of the iron core, the lower ends of the clamping plate assemblies are fixedly connected with the base support, an iron core column of the iron core is sleeved with the winding, and a resonance choking mechanism is installed on the iron core. The resonance choking mechanism comprises an upper pressing plate, a lower pressing plate, an inhaul cable and a balancing weight. According to the high-stability transformer, the resonance choking mechanism, the upper pressing plate and the lower pressing plate are arranged on the iron core to serve as boundary supports of the iron core, so that vibration of the iron core is reduced, the vibration of the iron core is transmitted to the inhaul cable and the balancing weight, the balancing weight generates vibration in the direction opposite to that of the iron core, vibration energy of the iron core is counteracted according to the law of conservation of energy, and the stability of the transformer is improved. The natural vibration frequency of the iron core is prevented from being close to the magnetostrictive vibration frequency of the silicon steel sheet, resonance is avoided, the noise of the transformer is reduced, and the transformer runs more stably.

A coil assembly for wireless electrical power transmission includes a plurality of external connecting terminals, a power feeding coil, a resonant capacitor electrically connecting with the power feeding coil, and busbars each of which electrically connects between the external connecting terminals.

The invention relates to an indoor transformer with an automatic fire extinguishing system, the transformer comprises a bearing frame, a fixing plate, a rotating shaft, a non-stored pressure type buffer fire extinguisher, a connecting pipe, a top frame spraying device and the like, through the design of the non-stored pressure type buffer fire extinguisher, a fire extinguishing agent can be quickly sprayed; in addition, the system is provided with a secondary suction pipe, unused dry powder can be recycled, the resource utilization rate is increased, the operation cost is reduced, the system is further provided with a standby fire extinguisher, when the main fire extinguisher cannot completely extinguish the fire, the standby system is automatically started, and the fire extinguishing efficiency is improved. A non-stored pressure type buffer fire extinguisher is adopted, when a fire occurs, an external power source is not needed, after a gas generator is triggered through a UPS power source, a fire extinguishing agent can be rapidly released, and fire extinguishing dry powder is sprayed to a fire source area through a connecting pipe and a spraying device.

The invention provides an automatic gear shifting device and method for a transformer tap switch. The gear shifting device comprises a rack and a lifting mechanism arranged in the middle of the rack, a rotating mechanism is arranged at the lifting end of the lifting mechanism, and a mechanical arm used for clamping the tap switch is arranged at the rotating end of the rotating mechanism; the side edge of the rack is also provided with a visual acquisition and analysis module which is used for acquiring gear image information of the tap switch, analyzing gear shifting execution information and transmitting the gear shifting execution information to the rotating mechanism; the rotating mechanism rotates the tap switch to a corresponding gear based on the gear shifting execution information; the operation risk of personnel can be reduced, the gear shifting efficiency is improved, and the power failure duration of the distribution transformer is effectively shortened.

The invention discloses a transformer with an electric leakage automatic power-off protection function, and relates to the field of transformer power-off protection, and the transformer comprises a main shell, cooling fins are arranged on the two sides of the outer surface of the main shell, a top cover abuts against the top of the main shell, an L-shaped folded plate is fixedly arranged at the bottom of the top cover, and a first inclined plate is arranged on the surface of one side of the L-shaped folded plate; a second inclined plate is arranged on the side, away from the L-shaped folded plate, of the first inclined plate, a transmission plate is arranged at the end, away from the first inclined plate, of the second inclined plate, and conical plates used for jacking the top cover are arranged at the end, away from the first inclined plate, of the transmission plate and the end, away from the first inclined plate, of the L-shaped folded plate. A temperature sensor is arranged at the position, between the second inclined plate and the first inclined plate, of the top of the top cover, and a warning lamp is arranged on one side of the temperature sensor. The low-voltage outlet and the high-voltage outlet are switched on and switched off, a warning lamp is matched to give an alarm, personnel can conveniently repair the transformer, meanwhile, the conical plate is driven to support the top cover, high temperature in the transformer is released, explosion is prevented, and the safety coefficient is increased.

The invention discloses an insulating fireproof dry-type transformer and a using method thereof.The insulating fireproof dry-type transformer comprises a bottom plate, a transformer body is fixedly arranged in the middle of the upper end of the bottom plate, a connecting cable is fixedly arranged on the outer side of the transformer body, and an isolating mechanism used for blocking and preventing fire is arranged between the bottom plate and the transformer body; and a fire extinguishing mechanism for quickly extinguishing the transformer body is arranged at the lower end of the bottom plate. The dry-type transformer is good in use effect, an isolation protection mechanism is additionally arranged for the dry-type transformer, when the dry-type transformer is normally used, the dry-type transformer is exposed outside and can naturally dissipate heat, normal use is guaranteed, and once any form of fire occurs, an external fire disaster or a fire disaster of the transformer can be rapidly isolated through the device.

The utility model relates to the technical field of power transformers, in particular to an energy-saving on-load voltage regulation oil-immersed power transformer which comprises a bottom plate, a transformer body, cooling fins and bolts, the transformer body is arranged at the upper end of the bottom plate, the cooling fins are arranged on the side edge of the transformer body at equal intervals, the bottom plate is connected with the bolts in a threaded mode, and the bolts are connected with the transformer body in a threaded mode. Temperature sensing mechanisms are symmetrically arranged on the side edges of the transformer body, heat dissipation mechanisms are symmetrically arranged at the upper end of the bottom plate, and an oil quantity detection mechanism is arranged at the upper end of the transformer body; an oil quantity detection mechanism is arranged, in the using process, when the oil quantity in the transformer body is insufficient, a floating block descends according to the oil level at the same time, and in the descending process of the floating block, when a sliding rod drives a balancing weight to make contact with a second switch, an alarm is given out through the second switch to remind an operator that the oil quantity in the transformer body is insufficient.

The invention provides a method for suppressing internal misfire caused by turn-to-turn short circuit of a dry-type air-core reactor, and belongs to the technical field of dry-type air-core reactors. A turn-to-turn short circuit fault detection device combining differential protection and infrared thermal image detection is established to form a three-dimensional turn-to-turn short circuit feature vector, a four-dimensional internal misfire minimum ignition vector is obtained, and a fire development prediction model is established based on an Arrhenius equation. A double-layer game model for minimizing the upper-layer fire loss and minimizing the lower-layer fire extinguishing cost is constructed to optimize five-dimensional suppression vector parameters, and coordinated actions of suppression equipment such as power-off protection, forced ventilation, temperature suppression and inert gas release are controlled in real time through a suppression vector parameter adjustment function. The technical problem of fire suppression measure starting lag or excessive response caused by difficulty in accurately predicting the opportunity and degree of development of the turn-to-turn short circuit fault of the dry-type air-core reactor into the internal fire disaster is solved.

The invention relates to a current transformer with an open circuit protection function and a protection method thereof, and belongs to the technical field of transformers, the current transformer comprises a transformer body and a protection box arranged at the front end of the transformer body, and the protection box comprises an indication mechanism used for indicating an open circuit fault of the transformer body; the box body is fixedly connected with the mutual inductor body, and a wire outlet groove is formed in the box body and used for secondary wiring; the binding posts are arranged in the box body and are connected with the secondary coil of the mutual inductor body; the protection mechanism is arranged on one side of the binding post; and the alarm mechanism is connected with the protection mechanism and is used for sending open-circuit fault alarm information. According to the device, the binding posts are short-circuited quickly through the protection mechanism, abnormal operation of the transformer caused by open circuit is prevented, continuous operation of a system is ensured, and the reliability and stability of the current transformer are improved.

The utility model relates to a neutral point positive and negative regulation system for an ultrahigh-voltage full-range voltage regulation intermediate transformer, which comprises an upper voltage regulation coil, a lower voltage regulation coil and a switch body, the switch body comprises a regulation connecting line, a regulation moving contact and two regulation switches, the regulation connecting line is connected with the tail end of a high-voltage coil group on a corresponding core column of the transformer, and the regulation moving contact is connected with the two regulation switches. Meanwhile, the two ends of the adjusting connecting wire are connected with the adjusting switches on the corresponding sides respectively, the upper voltage adjusting coil and the lower voltage adjusting coil control positive and negative gear switching through the adjusting switches on the corresponding sides respectively, a plurality of upper voltage adjusting static contacts are arranged on the upper voltage adjusting coil, and a plurality of lower voltage adjusting static contacts are arranged on the lower voltage adjusting coil. And one end of the adjusting moving contact is in contact with the corresponding upper voltage regulation static contact, and the other end of the adjusting moving contact is in contact with the corresponding lower voltage regulation static contact. According to the utility model, 33-shift output voltage is provided under each input voltage, and 66-shift different voltage output can be further realized in cooperation with series-parallel connection conversion adjustment of the high-voltage coil group.

The utility model relates to the technical field of transformer parts, and provides a transformer high-voltage lightning arrester mounting support which comprises a supporting transverse plate, a bearing vertical plate, a mounting frame plate, an adjusting unit and a limiting unit. One end of the supporting transverse plate is hinged with the bearing vertical plate, and the other end is fixed with the mounting frame plate; the adjusting unit is arranged above the supporting transverse plate, one end of the adjusting unit is hinged to the bearing vertical plate, the other end of the adjusting unit is fixed to the mounting frame plate, and the adjusting unit is provided with a sliding assembly used for driving the bearing vertical plate to be close to or away from the mounting frame plate; a limiting unit is installed at the upper end of the bearing vertical plate and comprises a supporting disc and a clamping assembly arranged on the supporting disc. The supporting disc is used for supporting a base of the lightning arrester, and the clamping assembly is clamped on the side wall of the base of the lightning arrester. The lightning arrester is fixed in a clamping mode, rapid installation of the lightning arrester is achieved, and the installation and disassembly efficiency of the lightning arrester is improved.

The embodiment of the invention provides a vibration-sensing automatic power-off device for a large transformer. The vibration-sensing automatic power-off device comprises a shell, the extending end of the first conducting rod is fixed to the shell and extends into the shell, and the other end of the first conducting rod is located outside the shell and connected with the transformer. The leading-in end of the second conducting rod is led into the shell; the plurality of locking mechanisms are arranged on the inner wall of the shell; the acceleration monitoring unit is installed on the shell and used for monitoring the acceleration of the device and generating a corresponding monitoring signal. In a normal state, the second conducting rod is clamped by the locking mechanism, so that the first conducting rod and the second conducting rod are conducted; when an earthquake occurs, the central control unit triggers the circuit breaker to be disconnected, the locking mechanism relieves clamping of the second conducting rod, and dual protection of electrical isolation and mechanical breaking is formed. And after the earthquake, the locking mechanism automatically resets and recovers conduction. The automatic power-off device has the full-process response capability of earthquake real-time sensing and quick response disconnection and reset, effectively prevents potential safety hazards such as short circuit and fire caused by an earthquake, and improves the survivability of power equipment in a strong earthquake environment.

An encapsulated IC includes a package substrate including first and second metal levels on first and second sides, respectively, the second side being opposite the first side, and a transformer laterally between the first and second metal levels, the transformer including a primary winding and a secondary winding, the primary winding including outer primary coil portions with first and second primary side terminals and an inner primary coil portion, and the secondary winding including outer secondary coil portions with first and second secondary terminals and an inner secondary coil portion. The encapsulated IC includes first and second die on the first and second sides, respectively.second side; first metal posts coupled between the first die and respective overlapping portions of the first metal level, the primary terminals, and the inner primary coil portion; and second metal posts coupled between the second die and respective overlapping portions of the second metal level, the secondary terminals, and the inner secondary coil portion.

The invention relates to the technical field of power transformers, and discloses a power transformer with an overheating protection function, which comprises a transformer body, the front part of the transformer body is provided with a protection device, the left side of the transformer body is provided with a knocking device, and the left side of the transformer body is provided with a dust pressing device; the protection device comprises a second motor, a second threaded rod, an L-shaped plate, a switch, a fixing block, a trapezoidal guide block and a mounting block, the second motor is fixedly connected to the top of the transformer body, the second threaded rod is fixedly connected to the output end of the second motor, and the L-shaped plate is in threaded connection to the circumferential surface of the second threaded rod. The installation block is fixedly connected to the front portion of the transformer body, the switch is installed on the front portion of the installation block, and the fixing block is fixedly connected to the left side of the L-shaped plate. When the transformer is overheated, the switch can be automatically turned off when an electric signal is received, and power-off protection is automatically conducted when the power transformer is overheated.

The invention provides a mechanical flux-adjusting stator separation type transformer. The mechanical flux-adjusting stator separation type transformer comprises a first stator assembly, a second stator assembly, a first rotor and a second rotor, a first air gap is formed between the first rotor and the first stator assembly; a second air gap is formed between the second rotor and the second stator assembly. The first stator assembly comprises a plurality of U-shaped iron cores and a plurality of permanent magnets which are respectively arranged in gaps among the U-shaped iron cores; the second stator assembly comprises a plurality of stator teeth which are in one-to-one correspondence with the U-shaped iron cores or the permanent magnets. When the central lines of the U-shaped iron cores and the central lines of the stator teeth are in one-to-one correspondence and coincide, the permanent magnet generates two first permanent magnet linkages. When the center lines of the permanent magnets and the stator teeth are in one-to-one correspondence and coincide, the permanent magnets generate a first permanent magnet flux linkage and a second permanent magnet flux linkage. The invention provides a mechanical magnetic adjustment stator separation type transformer, and aims to solve the problem that an iron core magnetic field of a traditional motor-transformer integrated product cannot be adjusted in the prior art.

The invention discloses a fireproof and explosion-proof safety type transformer, and relates to the technical field of transformers, one side of the top end of an embedded fixing box is connected with an outer row fixing pipe in a penetrating manner, the top end of the inner side of the outer row fixing pipe is fixedly provided with a pressing spring, and the bottom end of the pressing spring is fixedly provided with an I-shaped clamping frame; a clamping sealing ring is fixed to the position, corresponding to the I-shaped clamping frame, of the inner side of the outer exhaust fixing pipe, a plurality of exhaust fixing holes are formed in the outer side end of the outer exhaust fixing pipe at equal intervals, and isolation double-layer sleeves are symmetrically welded to the top end of the inner side of the embedded fixing box. The situation that the environment is polluted due to the fact that transformer oil overflows when hot steam is exhausted is avoided, meanwhile, resources are recycled, resource waste is reduced, the transformer oil is supplemented in real time, stability of internal protection is guaranteed, meanwhile, an internal fire extinguishing component is used for directly conducting fire extinguishing treatment on the interior, and the environment is protected. And the condition of high-pressure deflagration and explosion caused by internal fire is avoided.

The embodiments of the present disclosure provide a synchronous rectifier module, comprising: a transformer provided with a plurality of secondary windings, a first circuit board and a second circuit board disposed on opposite sides of the transformer, and a first connecting piece electrically connected to the first circuit board and a second connecting piece electrically connected to the second circuit board; the first connecting piece and the second connecting piece comprise current sharing portions connected to the first circuit board and the second circuit board respectively, and inductor portions which penetrate an inductance core side by side to form an output inductor, resistance values of the current sharing portions of the first connecting piece and the second connecting piece being equal or a resistance difference value therebetween being within a preset range. The present disclosure can quickly, accurately and conveniently improve the efficiency and the heat dissipation of the synchronous rectifier module, and achieve a better current sharing effect of the connecting pieces by adjusting the resistance value numerical range of the two connecting pieces.