9061results about "Transformers/inductances cooling" patented technology

The invention discloses a cooling cooperative control method, and the method comprises the steps: obtaining a temperature parameter, a load state parameter and a cooling system parameter of a transformer, and forming a parameter set; constructing a gating circulation unit model, and predicting thermal load distribution of each region of the transformer by adopting the parameter set through the gating circulation unit model; and performing real-time distribution on cooling resources by adopting a dynamic region distribution algorithm. According to the cooling cooperative control method, temperature and load changes of all areas of the transformer are predicted in real time through a gating circulation unit model; intelligent distribution of cooling resources is achieved through a dynamic area distribution algorithm, the cooling cooperative control method can dynamically adjust the flow speed of a cooling medium and the rotating speed of a fan according to real-time temperature and load changes, it is ensured that all areas of a transformer obtain appropriate cooling resources, and extra cooling is preferentially provided for areas with the temperature abnormally increased; and a cooling strategy is optimized through multiple iterations in combination with historical operation data, so that the response speed and accuracy of the cooling system are remarkably improved.

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 a dispersed transformer cooling system and method, and relates to the technical field of transformers, integration supporting rods are mounted on the inner side of a transformer integration box through fixing bolts, a treatment transformer box is welded to the top ends of the two integration supporting rods, a hollow supporting rod is clamped to the inner side of the treatment transformer box, and a transformer core is mounted at the top end of the hollow supporting rod; the device effectively solves the problems that in the prior art, due to the fact that oil cannot circulate, heat is concentrated at the position of a transformer core, the internal temperature cannot be homogenized, only external air cooling treatment is conducted, the heat removal efficiency is poor, meanwhile, oil overflow and oil liquid level control are utilized, and the heat removal efficiency is poor. And the heat exchange area is increased, and the influence of oil on the operation environment and the operation stability is avoided, so that the heat exchange area is increased, the heat exchange speed is increased, the overall temperature is balanced, and stable operation treatment of the transformer is realized.

The invention discloses a cooling system, method and device of a wind generating set, and relates to the technical field of wind power generation. The cooling system comprises a cooling loop, the cooling loop comprises a cooling pump station, a cooling medium, a connecting assembly and a plurality of cooling branches connected in parallel, the connecting assembly communicates between the cooling pump station and the cooling branches, the cooling pump station drives the cooling medium to circularly flow in the cooling loop, and each cooling branch comprises N heat exchange assemblies connected in series, n is an integer greater than or equal to 2; wherein the outlet of the cooling pump station is respectively connected with the inlet of each cooling branch, and the inlet of the cooling pump station is respectively connected with the outlet of each cooling branch. In other words, when the cooling system is designed, the heat exchange assemblies are connected in series, so that the number of parts can be reduced, the cost is reduced, and the economical efficiency is improved.

The invention belongs to the technical field of power robots. The transformer automatic flexible butt joint oil taking system comprises an oil taking box and an oil taking robot, the oil taking robot comprises an oil taking robot chassis, an automatic butt joint device and an oil sample extracting device, and the automatic butt joint device and the oil sample extracting device are installed on the oil taking robot chassis; the oil taking tank comprises a flexible butt joint oil taking opening fixed to an oil taking tank body, a fixed rod and a movable rod assembly, the automatic butt joint device comprises a guiding butt joint mechanism and a flexible butt joint oil taking mechanism, and the guiding butt joint mechanism is used for being matched with the fixed rod and the movable rod assembly for guiding butt joint. The flexible butt joint oil taking mechanism is used for being in flexible butt joint with the flexible butt joint oil taking opening. Manual operation is replaced through automatic cooperation of the oil taking robot and the oil taking tank, the automatic docking device is applied, the operation process is optimized, the operation and maintenance efficiency and safety of the electric power system are improved, and the risk of manual operation is reduced.

The invention relates to the field of transformers, in particular to an oil-immersed transformer with an intelligent temperature control system. An inner cavity of the transformer is divided into an infiltration cavity wrapping the outer side of an iron core winding, an upper outflow cavity and a lower outflow cavity through a pair of partition plates, and the upper outflow cavity and the lower outflow cavity are located on the two sides of the infiltration cavity; insulating oil is injected from the middle of the infiltration cavity and flows out from the upper outflow cavity and the lower outflow cavity, then mixing heat exchange of the insulating oil is carried out in the mixing barrel, a traditional natural flowing path formed by temperature difference of the insulating oil is replaced, and the insulating oil can reach the state that heat is evenly distributed more quickly; the problem of local overheating of the iron core winding caused by slow heat exchange due to natural flowing of the insulating oil is solved, meanwhile, the insulating oil fully flows in the infiltration cavity and fully flows and is in contact with the surface of the iron core winding through the confluence disc arranged on the partition plate, the spray pipe provided with a pair of spray holes and the flow guide column, and the heat dissipation efficiency is further improved.

The invention belongs to the technical field of power system control, and discloses an intelligent adjusting system and method for a transformer. The method comprises the following steps: inputting transformer operation data and weather data collected in real time into a pre-trained load prediction model to obtain predicted load data; inputting the acquired physical parameters and operation data and preset calibration parameters into a pre-constructed digital twinborn model to obtain a cooling capacity index; calculating the total heat source power of the copper loss and the iron loss according to the predicted load data and the electrical parameters of the transformer collected in real time, and dynamically quantifying the balance state of the total heat source power and the cooling capacity index through a matching degree evaluation function in combination with the cooling capacity index to obtain a matching degree evaluation index; and the problem of dynamic unbalance between the heat dissipation capability of the transformer and the load demand in an extreme environment is systematically solved.

The invention discloses a safety fault detection device for an oil-immersed transformer, and relates to the technical field of oil-immersed transformer temperature detection, the safety fault detection device comprises a detection mechanism, the detection mechanism is arranged on a cover plate of a transformer body oil tank, and the detection end of the detection mechanism extends into the transformer body oil tank and is immersed in oil; a cooling mechanism is further arranged on one side of the transformer body, the cooling mechanism is set to be in a closed state in a normal state, and when the detection mechanism detects that the oil temperature of the transformer body is too high and reaches the upper limit temperature, the cooling mechanism is started. The invention aims to solve the problem that the detection performance of a sensor is easily affected by high temperature for a long time when the sensor is immersed in oil for a long time and the like when the oil temperature of a transformer is detected in the prior art. The device has the advantages that the oil temperature is pre-detected through the detection mechanism, then the oil temperature is further accurately detected through the temperature sensor, and the situation that the detection performance of the sensor is affected by high temperature for a long time is avoided.

The invention discloses a dry-type transformer. The dry-type transformer comprises a transformer body, a housing, a bottom plate and a fan, wherein the transformer body is formed by a plurality of groups of encapsulated windings in an array mode, a supporting rod is arranged at the bottom of the transformer body and allow the encapsulated windings in each group to connect with each other, the supporting rod is arranged in a crossed mode, and first threaded holes penetrate the supporting rod; the transformer body is integrally arranged in the cavity of the housing, and the bottom of the transformer body is fixedly positioned with the bottom plate, and meanwhile, the transformer body is arranged in the housing through the fan, the whole device achieves dispelling the heat in the transformerbody, and the graphite material of housing side is protruding simultaneously, and the heat from the housing is diffused quickly, and the protrusion of the array distribution can reduce the air great dust entering the inner wall of the housing through air vents.

The invention relates to the technical field of transformers and discloses a high-frequency small planar transformer which comprises a transformer body, the transformer body comprises a lower magnetic core, an upper magnetic core is installed at the top end of the lower magnetic core, and a base plate, a cooling mechanism and a distance adjusting mechanism are arranged on the inner side of the upper magnetic core and the inner side of the lower magnetic core correspondingly. The cooling mechanism is arranged on the transformer body, more excellent heat dissipation and installation functions are achieved, a movable frame and a pull block are driven to move through reset of a first spring, an insertion block is clamped into a positioning groove to form an inverted-L-shaped layout, an upper magnetic core is transversely and longitudinally limited, and the upper magnetic core can be conveniently and rapidly installed. And meanwhile, the substrate is in contact with the cavity network, the internal high-performance fluorinated liquid absorbs heat and is changed from a liquid state to a gas state, enters the condenser through the conveying pipe after phase change, is cooled by the cooling fins to be in a liquid state and then circulates back to the cavity network through the water pump and the conveying pipe, local overheating is avoided, and the heat dissipation efficiency is improved.

An electronic device has a substrate, a signal wiring and a heat radiating wiring. The substrate has one surface and the other surface opposite to the one surface. The signal wiring is formed on an insulating layer of the substrate. The heat radiating wiring is formed on the insulating layer and thermally connected to the signal wiring on a same plane as the signal wiring.

The invention relates to the technical field of dustproof protection, and discloses an electronic transformer dustproof protection mechanism and a protection mechanism, the inner wall of the protection mechanism is fixedly provided with a dustproof assembly, and the inner wall of the protection mechanism is provided with an air suction assembly. The cooling fan is started to suck external air flow into the flow guide frame, the flowing speed of sand and dust in the air flow is reduced through the inclined panel, the motor is started to drive the rotating frame to rotate, the flowing speed of the air flow is reduced, the sand and dust with large air flow are settled, the sand and dust are pushed to fall into the arc-shaped dust discharging block in cooperation with frequent stretching-out of the inclined face ring, and the sand and dust are discharged through the arc-shaped dust discharging block. And finally, fine dust moving along with the air flow is filtered through a filter screen, the air flow dissipates heat of the electronic transformer, the air flow after heat dissipation flows out of an exhaust plate, through the application of the structure, the dust and the cooling air flow can be fully separated, and the dust is effectively prevented from directly making contact with the electronic transformer and polluting the electronic transformer.

The invention discloses a cooling method and device based on local heat source distribution in a transformer and electronic equipment, and relates to the field of electrical engineering. The method comprises the following steps: acquiring temperature data at a plurality of preset positions in the transformer; based on the temperature data, a three-dimensional temperature field model reflecting distribution characteristics of a heat source in the transformer is established, and the three-dimensional temperature field model comprises temperature distribution and heat conduction characteristic parameters in the transformer; calculating a space coordinate and a thermal power parameter of a local heat source in the transformer by using the three-dimensional temperature field model; according to the space coordinates and the thermal power parameters, a target cooling area of the transformer cooling system and corresponding cooling strength parameters are determined, and the cooling strength parameters comprise the flow, the flow velocity and the temperature of a cooling medium; and the working state of the transformer cooling system is controlled according to the cooling intensity parameter, so that the transformer cooling system cools the target cooling area. By implementing the technical scheme provided by the invention, the cooling effect is improved.

The invention relates to the technical field of direct-current transformers, in particular to a direct-current transformer for a power distribution network, which comprises an iron core, a coil and insulating oil, an insulating assembly is arranged between the coil and the iron core, and the insulating assembly comprises an insulating paperboard, an insulating cushion block, an insulating contour semi-ring and a semi-ring groove, the insulating paper board is of a structure with a round inner wall and an octagonal outer wall. Through the unique design of the insulating paperboards, the insulating partition strips and the insulating partition blocks, the longitudinal oil ducts and the transverse oil ducts are effectively reserved, the oil flow path of the transformer is optimized, the cooling efficiency is improved, and stable operation of the transformer is ensured; through the bisection splicing structure of the insulating cardboard and the overturning action of the insulating parting strip, the quick clamping assembly of the insulating cardboard and the iron core is realized, the time for adapting the winding on site is saved, the tightness and uniformity of the winding are improved, and the reliability and safety of the transformer are enhanced.

The self-cooled transformer comprises a base, a first heat dissipation mechanism and a second heat dissipation mechanism, a power transformation box is arranged at the upper end of the base, insulating oil is filled in the power transformation box, mounting frames are arranged at the upper ends of the front side and the rear side of the power transformation box, and connecting bottom pipes are arranged at the lower ends of the front side and the rear side of the power transformation box; the first heat dissipation mechanism comprises rotating joints, coil pipes and heat dissipation plates, the rotating joints are arranged in the middles of the opposite inner side faces of the vertically adjacent mounting frames and the connecting bottom pipe, the coil pipes are arranged between the rotating ends of the two vertically adjacent rotating joints, and the heat dissipation plates are arranged on the outer surface of a whole formed by the four coil pipes; the self-cooled transformer is provided with the two sets of heat dissipation mechanisms, air cooling and water cooling are achieved while internal circulation heat dissipation is achieved, the heat dissipation efficiency is improved, the heat dissipation devices can be automatically started step by step according to the equipment temperature, and energy waste is effectively avoided.

The invention discloses a high-power miniature electronic transformer, and relates to the technical field of miniature transformers, the high-power miniature electronic transformer comprises a main body, the main body comprises a lower magnetic core, the top end and the inner side of the lower magnetic core are respectively provided with an upper magnetic core and a base, one side of the outer surface of the base is provided with pins and an adjusting mechanism, and the outer surface of each pin is provided with a heat dissipation mechanism. Fixing mechanisms are arranged on the surfaces of the upper magnetic core and the lower magnetic core, more excellent compatibility and space utilization rate are achieved, a threaded rod is taken down through a rotating handle, then a clamping block is driven to move by moving a connecting rod, and then a reset spring is driven by the clamping block to stretch out and draw back on the inner side of a containing groove. Then the number of the pins can be reduced or increased according to the size of the space, adjustment of the distance between the pins is completed, then the clamping blocks drive the multiple sets of pins to move synchronously through resetting of the reset springs, and the pins of different sizes can be replaced according to needs to adapt to different placement spaces.

The invention relates to the technical field of transformers, in particular to a marine transformer with an anti-impact structure, which comprises a transformer main body, a base and a buffer box, and is characterized in that the transformer main body is horizontally limited and mounted on the base through a movable frame, and a buffer spring is arranged between the transformer main body and the base and is used for absorbing fine vibration during ship navigation; the buffer box is flexibly connected to the top of the transformer body through the supporting spring to adjust the oil quantity of the transformer body; a dynamic locking mechanism composed of a floating frame and a movable ball is arranged in the base, the movable ball supports the floating frame so that the transformer body can freely buffer vibration, and when a ship inclines greatly, the movable ball deviates so that the floating frame can move downwards. An oil fluctuation protection structure composed of an arc panel and a movable rod is arranged on the inner wall of the buffer box, when oil shakes violently, the movable rod is pushed to move outwards, and a lever type supporting rod is linked to make a bottom rubber wheel abut against the ground to form lateral supporting; the purpose of improving the marine impact resistance of the oil-immersed transformer is achieved.

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.

The invention relates to the technical field of transformers, in particular to an anti-interference phase-shifting rectification dry-type high-capacity transformer which comprises a cooling channel, an air inlet system, an air outlet system and a compression system. The cooling channel is arranged between the high-voltage coil and the low-voltage coil; the air inlet system is connected with the mounting frame, and when the air inlet system works, low-temperature gas outside the anti-interference shell is sucked in, forms rotational flow and is fed into the cooling channel; the air outlet system is connected with the top of the anti-interference shell, and the compression system is connected with the air outlet system; low-temperature air is extracted from the outside and fed into the space between the high-voltage coil and the low-voltage coil in a rotational flow mode, dead-corner-free heat dissipation is guaranteed, the heat dissipation efficiency can be improved by changing the included angle between the low-temperature air and the horizontal plane during rotational flow along with heat change, heat is recycled for refrigeration, and the heat dissipation efficiency is further improved; the problem that due to heat accumulation in the anti-interference shell, air blown into the position between the high-voltage coil and the low-voltage coil by the draught fan is hot air and is not evenly distributed is solved.

The invention relates to the field of transformers, and discloses a dry-type power transformer and a using method.The dry-type power transformer comprises a supporting base, a protection box is installed on the top of the supporting base, openings are formed in the two sides of the protection box, the protection box is hinged to a box door through hinges, and through openings are formed in the two side walls of the protection box; a first dustproof mechanism and a second dustproof mechanism are installed at the positions of the through openings respectively, a supporting seat is fixedly installed at the top of the supporting base, a transformer body is fixedly installed on the supporting seat, two symmetrical supporting columns are arranged at the top of the supporting base, and a moving mechanism is installed at the top ends of the supporting columns. The first dustproof mechanism and the second dustproof mechanism are arranged on the two sides of the protection box, and a first dustproof net and a second dustproof net in the first dustproof mechanism and the second dustproof mechanism can be replaced conveniently, so that the use flexibility of the equipment is improved.

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 utility model provides a transformer-based heat dissipation shell, which relates to the technical field of transformer shells and comprises a shell, a shell cover is mounted on the upper surface of the shell, a mounting hole is formed in the surface of the shell cover in a penetrating manner, a heat dissipation fan is mounted in the mounting hole, and a plurality of heat dissipation fins are arranged on the surfaces of the two sides of the shell at equal intervals. The screw rod is driven to rotate through the output end of the servo motor, meanwhile, the screw rod is made to move in the middle of the screw rod in a threaded sleeve mode, meanwhile, the screw rod can move as a guide plate, the dust screen is arranged between the inner walls of the observation openings, and the dust screen is arranged between the inner walls of the observation openings. When the guide plate moves, the guide plate drives the connecting rod and the moving plate to move at the same time, and meanwhile, the scraping plate and the brush are attached to the surfaces of the heat dissipation fins and the dustproof net to slide, so that dust on the surfaces of the heat dissipation fins and the dustproof net is cleaned, and the heat dissipation efficiency is improved.

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.

The utility model discloses a transformer with high heat dissipation performance, and relates to the technical field of transformers. The transformer comprises a transformer body, heat dissipation fins are fixedly arranged on the side wall of the transformer body, a bottom plate is fixedly arranged on one side of the bottom of the transformer body, and a cooling box is installed on the upper surface of the bottom plate. Cooling water flows from the first cooling water pipe, heat on the heat dissipation fins can be taken away, the temperature of the heat dissipation fins can be reduced, the cooled heat dissipation fins can conveniently and efficiently absorb heat to the transformer body to cool the transformer body, the cooling water flows into the second cooling water pipe, and the heat dissipation effect of the transformer body is improved. At the moment, the heated cooling water flows in the second cooling water pipe, and the cooling water in the second cooling water pipe is cooled by the fan, so that the temperature of the cooling water absorbing heat is reduced, heat on the cooling fins can be better cooled during water circulation, and the cooled cooling fins can more effectively cool the transformer body.

The invention provides an air-cooling and water-cooling integrated dry-type transformer, and relates to the field of transformers. The air-cooling and water-cooling integrated dry-type transformer comprises a transformer body, an annular gap is reserved between a primary winding insulating layer and a secondary winding insulating layer of the transformer body, a cooling pipeline is installed in the annular gap, a liquid inlet channel and a liquid outlet channel are arranged in the cooling pipeline, and the section of the cooling pipeline is in an 8 shape; according to the air-cooling and water-cooling integrated dry-type transformer, air cooling and water cooling are cooperatively used for heat dissipation, the heat dissipation efficiency is improved, the 8-shaped cooling pipeline is arranged, cooling liquid circularly absorbs heat of the winding through the liquid inlet channel and the liquid outlet channel, the spiral design increases the contact area and duration, the air cooling channel conducts double air cooling on the surface of the winding and the surface of the cooling liquid pipeline through the air spraying holes, and the cooling efficiency is improved. And the splayed structure of the gas spraying holes promotes gas-liquid heat exchange, the synergistic effect of assisting water cooling with air cooling and promoting air cooling with water cooling is formed, and the heat dissipation efficiency is greatly improved.

The utility model relates to the technical field of heat dissipation of dry-type transformers, and discloses a moisture-proof heat dissipation device of a dry-type transformer, which comprises an isolation shell and a dry-type transformer body bolted in the isolation shell, and further comprises a vertical rod bolted on one side of an inner cavity of the isolation shell, and a mounting frame is connected to the surface of the vertical rod in a sliding manner; through cooperation of the isolation shell, the supporting plate and the power mechanism, the transverse rod can transversely move in a reciprocating mode, through arrangement of the linkage mechanism, the installation frame can ascend and descend on the surface of the vertical rod, a draught fan can evenly dissipate heat of different areas of the dry-type transformer body, and through arrangement of a filter screen and sponge, the heat dissipation effect of the dry-type transformer body is improved. Through the arrangement of the air inlet mechanism, air in the air inlet pipeline can be filtered and subjected to moisture absorption treatment, through the arrangement of the auxiliary mechanism, sponge can be squeezed for drainage, a filter screen can also be cleaned, the air filtering effect is improved, and the situation that a large amount of humid air enters the transformer and is blown to the transformer is avoided.

The invention discloses vacuum degassing and automatic oiling equipment for a transformer, and relates to the technical field of transformer oiling. Comprising an oil injection device, the bottom of the oil injection device is provided with an anti-bubble suction part, and the anti-bubble suction part is used for preventing bubbles; a mistaken suction prevention part is mounted on the bubble prevention suction part; the mistaken suction prevention part is used for preventing transformer oil from being sucked mistakenly; a floating lifting adapter is mounted on the oil injection device; a film spacer is mounted on the floating lifting adapter; the film spacer is used for spacing new oil and old oil; the thin film spacer can be matched with the floating lifting adapter, so that new oil and old oil are isolated during oil change, mixing of the new oil and the old oil can be reduced, oil change quality is improved, and waste of the new oil is reduced; the problems that an existing transformer vacuum degassing automatic oiling device can only conduct small-amount oiling generally when a transformer does not stop working, and new and old oil isolation replacement oiling is not convenient to conduct are solved.

The invention provides a self-adaptive distribution transformer for an active power distribution network. The transformer design comprises a transformer shell, and cooling fins are arranged on the periphery of the shell to improve the cooling efficiency. An air guide plate is arranged on one side of each cooling fin and composed of a first inclined plate, a second inclined plate and an arc-shaped turning plate, the first inclined plate and the second inclined plate are arranged in an inclined mode, and therefore air flow is enhanced, and air conduction loss is reduced. Water-cooling assemblies are arranged on the two sides of the transformer, rainwater is collected through a fixed water tank, and water-cooling heat dissipation is achieved through a bottom rainwater conveying assembly. By means of the design, the transformer can automatically adjust the heat dissipation mode according to environment changes, and the safety and energy efficiency of outdoor operation are improved.

The invention discloses an ultra-thin high-energy-storage-density inductor which comprises a shell, a cover plate arranged on the upper portion of the shell, cooling fins fixedly installed in the cover plate, an inductor body arranged in the shell, a shell cover fixedly connected to the bottom of the cover plate and a connecting assembly arranged on one side of the shell. The connecting assembly comprises a dismounting and mounting mechanism arranged on the upper portion of the shell, a heat dissipation mechanism is arranged on the side portion of the shell, a damping mechanism is arranged in the shell, the top of a positioning block is fixedly connected with a cover plate, a clamping rod movably penetrates through a movable groove to be clamped with a clamping groove, one end of a second spring is fixedly connected with a movable block, and the other end of the second spring is fixedly connected with a clamping groove. The outer end of the connecting rod is movably connected with the shell. The problems that a top cover of an existing device is inconvenient to disassemble manually, so that the interior of an inductor is inconvenient to overhaul and locate manually, and subsequent use of the device is affected are solved.

The invention relates to the field of marine transformers, and discloses a marine transformer with a protection mechanism, the marine transformer comprises a transformer oil tank and a mounting seat, the transformer oil tank is arranged above the mounting seat, a movable supporting structure is arranged in the middle of the upper surface of the mounting seat, and the transformer oil tank is arranged on the mounting seat through an external protection structure; a mounting frame is fastened in the middle of the lower inner wall of the transformer oil tank, a winding is mounted on the mounting frame, and oil sliding up and down in the transformer oil tank can be blocked through an internal protection structure when the ship body shakes up and down to drive the oil to slide, so that the upper side face and the lower side face of the transformer oil tank are protected; the problem that the upper side face and the lower side face of the transformer oil tank deform due to impact is reduced, the upper side face and the lower side face of the transformer oil tank can be protected outside the transformer oil tank through the external protection structure and the auxiliary protection structure, and the protection effect is better.