206results about "Transformers/inductances corrosion protection" patented technology

A power distribution monitoring system is provided that can include a number of features. The system can include a plurality of power line sensing devices configured to attach to individual conductors on a power grid distribution network. In some embodiments, the power line sensors can include a split-core transformer. In some embodiments, a power line sensing device is disposed on each conductor of a three-phase network. The sensing devices can be configured to measure and monitor, among other things, current and electric-field on the conductors. Methods of installing, sealing, and protecting the split-core transformers of the power line sensors are also discussed.

A three-phase dry distribution transformer adapted for mounting outdoors on a pad or to a utility pole. The distribution transformer includes one or more winding assemblies mounted to a ferromagnetic core. Each winding assembly includes a low voltage winding and a high voltage winding. In each winding assembly, an encasement comprised of an insulating resin encapsulates the low voltage and high voltage windings. The encasement includes a body and a pair of high voltage bushings and a pair of low voltage bushing.

In a three phase transformer core, amorphous metal strips are wound into rings that are combined into frames and assembled to define cores with leg cross sections that have more than 4 sides to facilitate winding transformer windings onto the legs using winding tubes. The amorphous metal layers are secured relative to one another and the core made more rigid using resin, silicon steel layers included in the amorphous metal core, or by using strapping or tying devices.

A pressure compensator is configured to compensate for volume variations of an insulation medium of a subsea installation. The pressure compensator includes a first bellows chamber having walls and a first bellows part. The first bellows chamber is in flow connection with an insulation medium chamber of the subsea installation, and the walls of the first bellows chamber are configured to separate the insulating medium from surroundings. The first bellows chamber is surrounded by a second bellows chamber having walls and a second bellows part. The second bellows chamber is configured to form a closed intermediate space around the first bellows chamber. The walls of the second bellows chamber are configured to separate at least the bellows parts of the first bellows chamber from the surrounding sea water. The second bellows chamber is further filled with an intermediate medium.

Provided is a contactless electric power feeding system that allows a plurality of devices to be recharged at the same time. A feeding device includes a primary feeding coil and each receiving device includes a secondary receiving coil. Each coil forms a resonance circuit jointly with a capacitor, and the two resonance circuits are electro-magnetically coupled with each other to from a transmission circuit unit. A first impedance of an input end of the transmission circuit unit is matched with a second impedance of an output end of the transmission circuit unit by using a coupling efficient between the primary feeding coil and the secondary receiving coil, and the output impedance of a power supply unit for supplying electric power to the primary feeding coil is smaller than the first impedance.

A magnetic component for a magnetically actuated fuel injection device is formed of a corrosion resistant soft magnetic alloy consisting essentially of, in weight percent, 9%<Co<20%, 6%<Cr<15%, 0%≦S≦0.5%, 0%≦Mn≦4.5%, 0%≦Al≦2.5%, 0%≦V≦2.0%, 0%≦Ti≦2.0%, 0%≦Mo≦2.0%, 0%≦Si≦3.5%, 0%≦C<0.05%, 0%≦P<0.1%, 0%≦N<0.5%, 0%≦O<0.05%, 0%≦B<0.01%, and the balance being essentially iron and having at least one of Al, V, Ti and Mo.

A reactor 1α includes a coil 2 formed by winding a wire 2w, a magnetic core 3 that is disposed inside and outside of the coil 2 and forms a closed magnetic circuit, and a case 4 that has an opening portion and a bottom surface 40 that opposes the opening portion and that houses an assembly 10 of the coil 2 and the magnetic core 3. At least the opening portion of the case 4 side of the magnetic core 3 is formed of a molded solid body that contains magnetic powder and resin. A surface layer 5, which prevents the magnetic powder from rusting, is provided on a surface of the magnetic core 3 on the opening portion of the case 4 side. The surface layer 5 has a resin portion formed of resin similar to the resin contained in the magnetic core 3. The resin portion is formed so as to be continuous with the resin contained in the magnetic core 3 without an interface formed therebetween.

A pressure compensator is configured to compensate for volume variations of an insulation medium of a subsea installation. The pressure compensator includes a first bellows chamber having walls and a first bellows part. The first bellows chamber is in flow connection with an insulation medium chamber of the subsea installation, and the walls of the first bellows chamber are configured to separate the insulating medium from surroundings. The first bellows chamber is surrounded by a second bellows chamber having walls and a second bellows part. The second bellows chamber is configured to form a closed intermediate space around the first bellows chamber. The walls of the second bellows chamber are configured to separate at least the bellows parts of the first bellows chamber from the surrounding sea water. The second bellows chamber is further filled with an intermediate medium.

The invention discloses a power electrical transformer with long service life and particularly relates to the field of transformers. The transformer comprises an oil tank, a heat dissipation plate group, a top cover and mounting angle steel, wherein the heat dissipation plate group is fixedly arranged on an outer wall of the oil tank and communicates with the oil tank, the top cover is arranged atthe top of the oil tank and an edge is fixedly connected with the oil tank through screws, the mounting angle steel is arranged at the bottom of the oil tank, a driving box is fixedly arranged between the oil tank and the mounting angle steel, a rust-proof cleaning assembly is arranged in each heat dissipation plate group, and a lifting mechanism is fixedly arranged at the top of the driving boxcorresponding to the position between every two adjacent heat dissipation plate groups. According to the transformer, the rust-proof cleaning assembly is arranged in each heat dissipation plate group,a rust-proof cleaning system is used in cooperation with the lifting mechanism, the heat dissipation plates can be cleaned at ordinary times, when the rust-proof layers on the outer walls of the oiltank and the heat dissipation plates are about to be damaged, rust-proof oil is sprayed to the outer walls of the oil tank and the heat dissipation plates, the whole rust-proof cleaning system can prevent a cooling system from being damaged, and the service life of the whole transformer is prolonged.

The invention relates to the technical field of coatings, in particular to a graphene heat dissipation anticorrosive coating and a preparation method and application thereof. The graphene heat dissipation anticorrosive coating is prepared from, by mass, 40-55 parts of resin, 8-11 parts of a curing agent, 25-28 parts of a diluent, 1-20 parts of zinc powder, 2-5 parts of graphene, 2-5 parts of boronnitride and 4-10 parts of aluminum oxide. By utilizing the heat dissipation function of the graphene coating, the temperature of a transformer radiator is effectively lowered, and the heat dissipation and cooling effects are obvious. Physical shielding and conductivity of graphene are utilized to improve the corrosion resistance of the coating.

The invention discloses a neodymium-iron-boron magnet surface composite corrosion-resistant coating and a preparation method thereof. The composite corrosion-resistant coating sequentially comprises acold spraying aluminum coating, an aluminum oxide passivation layer obtained through surface passivation treatment and a hole sealing ceramic paint layer from the surface of a neodymium-iron-boron magnet to the outside. The preparation method comprises the following steps of: (1) surface treatment of a neodymium-iron-boron substrate; (2) treatment of aluminum powder; (3) cold spraying of an aluminum coating; (4) passivation treatment to obtain an aluminum oxide passivation layer; and (5) hole sealing treatment to obtain a hole sealing ceramic paint layer. The prepared neodymium-iron-boron magnet surface composite corrosion-resistant coating has excellent local corrosion resistance, the corrosion-resistant coating is formed by well combining with the neodymium-iron-boron magnet, the defects that a pure aluminum coating is low in strength and hardness and micropores exist in the surface are overcome, and the service life of the corrosion-resistant coating is prolonged when the corrosion-resistant coating is used as a sintered neodymium-iron-boron magnetic material surface corrosion-resistant process.

The invention discloses an offshore corrosion-resistant, explosion-proof and corrosion-resistant junction box transformer in the technical field of transformer box bodies. The bottom surface of a boxbody is fixedly connected with a supporting block; I-shaped mounting blocks are fixedly arranged on the left side and the right side of the supporting block; a connecting part is fixedly arranged at one end of each I-shaped positioning block; symmetrical ventilation openings are formed in the side wall of the box body; a dustproof net is hinged in the ventilation opening; one end of a fixed rack is fixedly connected with the side wall of a sealing plate on one side; a driving gear is connected with the output end of a motor set through a transmission shaft; a driving mechanism is arranged on apipeline; the top of the internal cavity of the box body and the top of the outside of the box body are respectively provided with a flame sensor and a rainfall sensor. The box transformer has the advantages that the installation is convenient, different heat dissipation openings are opened according to weather, and humid air is prevented from entering the inner cavity of the box body; meanwhile,the function of immediately solving the problem that an electric device is on fire is achieved, the safety is high, and the use effect is good.

This invention of one method with respect to material selection and forming to solve aging of one inductor's iron core comprises materials such as iron powder, insulating compound, thinner, adhesive, and lubricant at least for mixing, agitating, and heating according to weight percentages of materials selected where a layer of protection film formed on surfaces of insulated powder particles by adhesives makes particles sustain the glass transition temperature of 600 Celsius degrees or so and one inductor with an aging-resistant feature is generated with a mixture held inside one mold cavity for a die-casting process via the powder metallurgy technique and then high-temperature sintering.

The invention discloses a high-stability corrosion-resistant long-life communication transformer and a manufacturing method thereof. The communication transformer comprises a framework, a winding, a magnetic core, a shielding cover and a packing material, and is characterized in that the framework is an alumina-based porous foam ceramic framework with a porosity of 20-30%; the winding adopts a purple copper wire with epoxy polyester insulating paint; the magnetic core is a molybdenum pomo magnetic core which is shaped like a Chinese character 'ri'; a self-circulation insulating heat transfer filler is filled in gaps between the shielding cover and other parts, and the self-circulation insulating heat transfer filler is a mixture of alumina-based porous foam ceramic and rosin; the shieldingcover is made of titanium-containing low-carbon steel with activated and passivated surface and is packaged in a totally-enclosed structure. The communication transformer has the advantages of smallloss, high conversion efficiency, good electromagnetic shielding property, good insulation property, corrosion resistance, oxidation resistance and long service life.

The invention discloses an energy-saving transformer with a high-stability wall-mounted assembly, and belongs to the technical field of transformers. The energy-saving transformer comprises a transformer body, heat dissipation mechanisms are arranged on the upper and lower side surfaces of the transformer body, and driving mechanisms are arranged on the left and right side surfaces of the transformer body; and the upper end and the lower end of the driving mechanism are fixedly connected with the opposite faces of the two heat dissipation mechanisms correspondingly. According to the transformer, by arranging the heat dissipation mechanisms, when a pressing plate moves to be close to the transformer body, air bags can be extruded, air in the air bags can be sprayed out through a plurality of nozzles, the nozzles blow cold air into the transformer body, and the air bags on the upper side and the lower side can spray air at the same time; and at the moment, air blown into the transformer body can form convection, heat is adsorbed and extruded mutually, finally, hot air is evenly sprayed out through a plurality of heat dissipation holes in the left side and the right side of the transformer body, and the heat dissipation effect on the interior of the transformer body is achieved.

The invention discloses an intelligent temperature control type three-phase resin insulation dry-type transformer which comprises an isolation box and a fixing frame. A fixing base is installed on the bottom wall of the inner side of the isolation box through bolts, a lower clamping plate is installed at the top of the fixing base through bolts, and a transformer body is installed at the top of the lower clamping plate through a cushion block; and fixing shells are installed on the inner walls of the two sides of the isolation box through bolts, temperature and humidity displays are installed on the outer walls of the two sides of the isolation box, and a wire arranging pipe is installed on the inner wall of one side of the isolation box in a penetrating mode. According to the invention, the fixing shells are installed, air is conveyed through the vent holes in the fixing shells, moisture in the air is absorbed by a moisture-proof agent in the fixing shells, and therefore the humidity in the isolation box is reduced, and due to the fact that the moisture-proof agent is embedded in the fixing shells, a worker can easily take out the moisture-proof agent from the interior of each fixing shell to complete replacement of the moisture-proof agent; and worker operation is facilitated.

The invention discloses a distribution transformer with an iron core replacement function. The distribution transformer comprises a shell, a mounting plate, a mounting bases, a motor, a connecting base, a transmission gear, a driving gear, a screw, movable blocks, supporting rods, a movable groove, an iron core base, a fixing frame, limiting plates, limiting holes, fixing plates, heat dissipationplates, an iron core, a damp-proof box, locking bolts, dust removal nets, air inlet pipes, side plates, sliding grooves, sliding blocks, threaded holes, adjusting holes, connecting plates, adjusting bolts, semiconductor chilling plates, heat dissipation fans, a filter net, an activated carbon adsorption net, breathable sponge, movable pipes, fixed pipes and pressing plates. The distribution transformer is reasonable in structure. The motor drives the driving gear to rotate, the driving gear drives the transmission gear in meshed connection therewith to rotate, the transmission gear drives thescrew to rotate in the fixing frame, the screw drives the two movable blocks in threaded connection therewith to get close to each other, the movable blocks drive the limiting plates to slide along the movable grooves, and the two limiting plates clamp and fix the iron core base. The device is convenient to install, disassemble and maintain.

The invention discloses an automatic monitoring system for a transformer oil tank, which includes an oil storage tank and a backup oil tank, the backup oil tank is connected to the oil storage tank through an oil supply pipe, and an oil outlet of the backup oil tank is also provided There is a solenoid valve, and at least one liquid level detector is respectively arranged in the inner cavity of the oil conservator and the oil reserve tank, and also includes a controller, a timing module, and an alarm module, and the solenoid valve, liquid level detector, and alarm module are all Connected with the controller, the invention solves the problems in the prior art that people cannot find out in time when the internal oil leaks due to poor sealing or cracks in the oil conservator.

The invention provides an oil tank sealing device for a large transformer. The oil tank sealing device comprises a box body, a box cover, a nut, a bolt, a plug board, a sealing sleeve, a boss, a sealing ring and a frame, wherein the sealing ring is disposed on the upper side surface of the box body; the frame is welded to the upper end of the outer surface of the box body; the boss is fixed to theedge of the upper side surface of the frame; the upper end of the boss extends into the sealing sleeve; the box cover and the middle portion of the rear side surface of the frame are provided with slots; the front parts of the upper and lower ends of the plug board are installed in the slots; more than two round holes 1 are disposed on the rear end of the upper side surface of the box cover; round holes 2 are disposed on the plug board directly below the round holes 1 and the upper side surface of the frame; the lower end of the bolt runs through the round hole 1 and the round hole 2 and extends to the lower side of the frame; and the nut is in threaded engagement with the lower end of the bolt. Such design improves the sealing effect of the oil tank sealing device. The oil tank sealing device provides double seal so as to achieve a good sealing effect and good protection, thereby having a long service life.

The invention discloses a mounting-facilitating transformer, which comprises a base, wherein multiple mounting holes are symmetrically formed in the base; four mounting slots are uniformly formed in the lower surface of the base; two grooves are symmetrically formed in the inner wall of each mounting slot; four first cavities and four second cavities are symmetrically formed in the base; a motor is arranged in each second cavity; a limiting rod is arranged in each groove; a fixed block is arranged on two limiting rods; supporting frames are arranged on the fixed blocks; the supporting frames are connected with rolling wheels in a rotatable manner; the fixed blocks are in threaded connection with two threaded rods. The mounting-facilitating transformer disclosed by the invention is simple in structure and convenient to use; by the arrangement of the rolling wheels, the transformer can move conveniently; furthermore, the rolling wheels can be collected into the mounting slots, so as to not affect the mounting of the transformer; meanwhile, by the arrangement of a vibration absorption device, damage to the transformer due to vibration generated in a moving process is reduced; by the arrangement of multiple different springs, the vibration absorption effect is guaranteed; the service life is prolonged; the transformer is worthy of being popularized.

The invention provides an anti-aging epoxy resin box-type transformer. The transformer includes a box body and a transformer shell arranged in the box body; the box body and the transformer shell areboth made of a metal plate. An anti-aging coating layer, an electromagnetic shielding layer and a finish paint layer are sequentially arranged from inside to outside. The coating layer is prepared from 10-20 parts of butanol, 40-60 parts of zinc oxide-novolac epoxy resin, 20-30 parts of micro glass sheet, 20-30 parts of modified zinc oxide, 10-25 parts of polytetrafluoroethylene, 8-15 parts of polyurethane resin, 3-5 parts of polyvinyl acetate and 1-5 parts of other auxiliary agents. According to the invention, the anti-aging coating layer, the electromagnetic shielding layer and the finish paint layer are coated on the basis of the metal plate, three-layer protection is achieved, epoxy resin is modified to obtain zinc oxide-novolac epoxy resin, a micro glass sheet is introduced to preventrainwater, salt and the like from entering, modified zinc oxide and polytetrafluoroethylene are introduced to improve the corrosion resistance, coating degradation caused by ultraviolet rays can alsobe inhibited, and the aging resistance and corrosion resistance of the transformer are improved.

The invention discloses a novel transformer with an automatic fire detection function and a using method. The novel transformer comprises a box body, wherein a coil is arranged in an inner cavity of the box body, a refrigeration box is fixedly connected to the right side of the box body, an exhaust fan is fixedly connected to the top of an inner cavity of the refrigeration box, and the surface ofthe coil is sleeved with a cooling bent pipe. The transformer has the advantages of an automatic heat dissipation function, good heat dissipation effect, an automatic fire extinguishing function, prevention of fire spreading and convenient installation, solves the problems that an existing transformer is single in function, does not have the automatic heat dissipation function, is prone to spontaneous combustion in a high-temperature environment and does not have the functions of fire detection and automatic fire extinguishing, operators need to rescue themselves after a fire occurs, optimal fire extinguishing time is missed, spreading of the fire is easily caused, the position of a mounting plate cannot be adjusted, the transformer needs to be moved by the mounting personnel for adjustment, and the mounting of the transformer is inconvenient.

The invention discloses a rural power grid distribution transformer. The rural power grid distribution transformer structurally comprises a case, a heat dissipation panel, a bottom plate and an installation rod, the bottom of the case is connected to the upper surface of the bottom plate in a welded mode, the heat dissipation panel is fixedly embedded in the outer surface of the case, and the bottom of the bottom plate is connected with the installation rod through bolts. The transformer has the beneficial effects that swing blocks in through holes in positioning rods temporarily store fallingrainwater, the positioning rods and a cooling fin are driven by the gravity of the rainwater to move downwards, the rainwater can flow downwards conveniently, the situation that the cooling fin rustdue to the fact that the rainwater remains on the cooling fin is avoided, a drainage plate is stressed to move downwards along with a supporting plate in the pressing process of the cooling fin, the drainage plate shakes up and down under the elastic force of the rubber spring, the cooling fin shakes up and down to shake rainwater down to the surface of the drainage plate, meanwhile, an air bag isextruded to blow air into a through pipe, and the air is blown into the air blowing hole to enable a baffle to be opened to blow the rainwater on the drainage plate, so rainwater drainage is accelerated, and rusting of the heat dissipation panel caused by rainwater remaining in the heat dissipation panel is avoided.

The invention discloses a thermodynamic snow accumulation prevention type outdoor transformer, belongs to the field of transformers, and particularly relates to the thermodynamic snow accumulation prevention type outdoor transformer. An expansion snow melting column in a rod-type closed chain is heated to expand by utilizing heat generated during operation of a transformer body, and under the sizelimitation of non-equidistant chutes, the whole rod-type closed chain is driven to rotate in a loop; on one hand, the expansion snow melting column expanded after being heated moves to the outside tosweep and melt ice and snow at the upper end of a protective shell, and on the other hand, the expansion snow melting column restored to the original state after being shrunk in the outside moves tothe interiors of the non-equidistant chutes to be expanded again after being heated; and therefore, continuous circulating movement of the whole rod-type closed chain is achieved, ice and snow at theupper end of the protective shell are circularly removed and melted in the loop moving process, the situation that the upper end of the protective shell is covered with snow and ice is greatly reduced, and normal use of the transformer body is effectively guaranteed.

The invention relates to the technical field of transformers, and in particular to a transformer based on non-Newtonian fluid cooling. The transformer comprises a shell, a transformer assembly, transformer oil, an aluminum shell, a heat conduction plate set, a circulating pipeline, a fixing frame, cooling fins, a liquid inlet pipe, a liquid return pipe, a sealing assembly, a buffer spring, a fixing frame, a top plate, a wiring end, a lightning rod and a base frame. The transformer assembly is fixedly installed inside the outer shell, a gap between the outer shell and the transformer assembly is filled with the transformer oil, the aluminum shell is arranged outside the outer shell in a sleeving mode, the heat conduction plate set is fixedly installed on the outer surface of the outer shell, and the circulating pipeline is fixedly installed on the heat conduction plate set. According to the transformer, the purpose of quickly cooling the transformer is achieved, the heat dissipation effect on running heat of the transformer can be improved, it is guaranteed that the transformer is always within the temperature range suitable for running, the phenomenon that the transformer is burntdown due to heat accumulation is avoided, and the service life of the transformer is prolonged.