204 results about "Amorphous metal transformer" patented technology

The invention discloses an amorphous alloy transformer core, which comprises a rectangular core frame body formed by laminating amorphous alloy strips. An inner side of the amorphous alloy strip on the innermost layer is provided with an inner silicon-steel sheet, and an outer side of the amorphous alloy strip on the outermost layer is provided with an outer silicon-steel sheet. Grid fiber materials are adhered on the end face of the core frame body which is provided with lamination seams of the amorphous alloy strips through insulating glue. The width of the grid fiber materials is greater than the lamination thickness of the amorphous alloy strips, the inner silicon-steel sheet and the outer silicon-steel sheet, and the edges of the grid fiber materials are adhered to the inner silicon-steel sheet and the outer silicon-steel sheet. The invention also discloses a manufacturing method for the amorphous alloy transformer core. By adhering the grid fiber materials, the adhesive strength of a coating is increased; the crack of the coating is prevented; the shed of the amorphous core is prevented; and the safe operation of a transformer is guaranteed.

A non-encapsulated-winding stereo wound-core dry-type amorphous alloy transformer. The core of the transformer has a stereo structure. Three lower yokes are placed on a base of a lower clamp, and an upper clamp and the lower clamp are connected with each other by several press screws. Low-voltage windings include a foil-wound or wire-wound cylindrical structure, while its high-voltage windings are wound with oxygen-free copper wires wrapped in an insulate paper and processed through vacuum pressure impregnation. Upper and lower padding blocks support and compress the high-voltage and low-voltage windings, so that the product is formed in a rigid stereo frame structure.

The invention relates to an electromagnetic design method of an amorphous alloy transformer, which designs electromagnetic parameters of the amorphous alloy transformer by utilizing a circulating traversing method, and provides a calculation method of transformer iron core parameters, no-load loss and load loss considering the characteristics of an amorphous alloy material, effectively inhibits the local magnetic saturation and reduces the loss of the transformer; moreover the search space can be reduced, the search speed can be increased, and the reliability of the design scheme can be improved. Meanwhile, since the electromagnetic design of the amorphous alloy iron core power distribution transformer involves fewer variables, the calculation requirement of the circulating traversing method can be satisfied by utilizing the existing computer, and the cost for optimizing the computer system can be reduced.

The invention provides a structure for fastening an amorphous alloy transformer body. A low-voltage coil (1) and a high-voltage coil (2) in a phase winding of the transformer body are distributed in a staggered manner; a clamp plate (3) is arranged on the outer side of the end part of the phase winding of the transformer body; one or a plurality of phase windings are sleeved on a core limb (5); the phase windings are fastened by a binding tape (4); and the upper parts and the lower parts of the coils in the phase windings are embedded in the grooves of a lower fixture (6) and an upper fixture (7) respectively. The method for assembling the transformer body comprises the following steps: winding the low-voltage coil (1) and the high-voltage coil (2) respectively; assembling the coils into a single phase winding; tightly pressing the phase windings inwards by the clamp plate (3); binding up the phase windings and the clamp plate (3) by the binding tape (4); sleeving the bound phase windings on the core limb (5); mounting the phase windings together with the core limb (5) on the upper fixture (7) and the lower fixture (6); and plugging cushion blocks between the clamp plate (3) and the walls of the upper fixture (7) and the lower fixture (6).

A body of a shell type amorphous alloy transformer comprises an amorphous alloy shell type iron core (1) and rectangular coils which are alternatively arranged, and a U-shaped epoxy resin insulating clamp (3) is arranged outside an iron yoke (31) of the amorphous alloy shell type iron core (1). Square type frameworks (5) are respectively arranged on the upper portion and the lower portion of the iron core (5) outside each phase winding (2), and the phase winding is clamped by the square type frameworks (5) through an insulating plate (6). An intermediate section of box body and a lower section of box body in a transformer with an oil box or a gas box can stretch the square type framework (5) of each phase winding through a breast beam and box walls, thereby facilitating the short-circuit force of the phase winding to transfer to the square type framework (5) and the oil box walls. A coil support plate (4) which is formed by insulating elements is arranged on the inner side of the phase winding (2), which can lead the crosswise force of a coil not to press the amorphous alloy shell type iron core (1) when the coil is in short-circuit. The intermediate section of box body and the lower section of box body are used to position the iron core through the U-shape clamp (3). A dry transformer is used to fix the iron core (1) through an upper location press plate and a lower location press plate (27).

This invention provides an amorphous transformer for electric power supply, using a magnetic core formed of an amorphous alloy material, which, as compared with the conventional amorphous alloy material, has a lower annealing temperature and a higher level of magnetic properties. The amorphous transformer for electric power supply is provided with a magnetic core of a thin band of an amorphous alloy and a winding wire. The iron core has been annealed under such conditions that the iron core center part temperature during annealing after iron core molding is 300 to 340° C. and the holding time is not less than 0.5 hr. Further, for the iron core, the magnetic field intensity during annealing after the iron core molding is not less than 800 A/m.

The invention belongs to the technical field of amorphous alloy iron core manufacturing, and particularly relates to a supporting bar favorable for dissipating heat of an oil-immersing amorphous alloy transformer. Temperature rising of the transformer is reduced through optimizing the oil-immersing amorphous alloy transformer. The supporting bar comprises supporting bar bodies, glue applying straps are connected to the lower surfaces of the supporting bar bodies, and the number of the glue applying straps is more than one. The thickness of the supporting bar bodies in an oil channel of the transformer is increased, the area of the oil channel can be increased, the supporting strength of the supporting bar bodies is improved, a breakdown voltage is increased, and the heat dissipating effect of the transformer is improved. The two narrow-piece glue applying straps are adopted to paste a fence-type structure of the supporting bar bodies, not only is full contact between oil and copper wires facilitated and thus is the temperature rising of the transformer reduced, but also machining difficulty of the transformer is favorable for being reduced, the transformer can be machined faster and more conveniently, and the temperature of the transformer is lowered. Thus, the remarkable advantages that the heat dissipating coefficient is improved and the temperature rising of the transformer is reduced are achieved, and the supporting bar is simple and reasonable in structure, obvious in effect and favorable for being widely promoted and applied.

The invention discloses a framework structure of an amorphous alloy transformer. The framework structure of the amorphous alloy transformer is a hollow barrel, the section shape of an inner cavity of a framework matches with the section shapes of iron core columns used for sleeving each phase of coils, each iron core column is formed by splicing of a plurality of iron core column units which have the same shape and the same dimensions, and the inner cavity of the framework is partitioned into a plurality of space units through partitions according to the number and the shape of the iron core column units, so that each of the iron core column units can be inserted in one of the space units of the framework correspondingly. Each iron core column cannot be subjected to mutual friction and extrusion to produce stress, so that no-load loss is reduced. Additionally, rigid strength of the framework is enhanced, so that resistance to electromotive force produced by the coils can be strengthened when the transformer is short-circuited unexpectedly, increasing of the no-load loss caused by extra-stress of iron cores is prevented, and time for assembling a transformer body is greatly shortened by the preprocessed framework.

The invention discloses an method of assembling an amorphous alloy transformer, which comprises placing an upper fastening plate and an upper compression plate; vertically placing iron core frames, opening the iron core frame and placing an iron core insulator inside; covering coils on an iron core column with the coil outlet being faced downward; placing a lower iron yoke insulator in a way that the rabbet thereof is aligned to an iron core window; fixing supporting plates, in the same number as the coils, inside the coils, closing the iron core, taking out the fragments in time; placing iron core disks, in multi-stage mode, on the lower iron yoke insulator, closing the iron core, adhering with adhesive tape, connecting grounded disks to connect iron core frames and sealing the joint seams with epoxide resin; placing an insulator and a lower compress plate; turning the transformer body and drying the body; and assembling lead lines to obtain an amorphous alloy transformer. The invention can eliminate the potential danger that the iron core chips fall into the coils during the operation of the transformer, and reduce the noise and loss of the transformer.

The invention provides an amorphous alloy oil-immersed transformer employing micro-perforated panels. The amorphous alloy oil-immersed transformer comprises a specially designed transformer oil tank, the micro-perforated panels, a hollow cavity, shock pads and a high-voltage bushing, a low-voltage bushing and a high-voltage tap switch, wherein the specially designed micro-perforated panels are arranged in the oil tank; the hollow cavity is used for serving as an acoustic impedance; one shock pad is arranged between a transformer body and the tank bottom; the other shock pad is arranged between a hanger plate and a clamp; transformer oil is used as an insulating and cooling medium; the high-voltage bushing, the low-voltage bushing and the high-voltage tap switch are arranged on a tank cover; and a sound absorber comprises one or more micro-perforated panels and the single hollow cavity or a plurality of hollow cavities. The micro-perforated panels form a helmholtz resonant cavity after being installed on the inner side wall of the amorphous alloy oil-immersed transformer oil tank, can absorb energy of vibration caused by iron core magnetostriction and coil vibration caused by electrodynamic force, and finally reduce the noise. Due to the adoption of an amorphous alloy iron core, the amorphous alloy oil-immersed transformer can save more energy than a traditional transformer; the oil tank provided with the micro-perforated panels can absorb vibration of the maximum amplitude corresponding to the iron core vibration frequency; and the noise of the micro-perforated panels is reduced.

The invention relates to an adjustable type amorphous alloy transformer winding die and a manufacturing and use method. The adjustable type amorphous alloy transformer winding die comprises an adjustable low-voltage winding die, a high-voltage support die and shaping wood square blocks, and is characterized in that the adjustable low-voltage winding die structure consists of a panel, a cushion block and a fixing plate; two parallel support plates are vertically arranged in the middle part of the wide side of the panel, a positive thread rod and a reverse thread rod penetrate through the two parallel support plates, two assemblies are vertically buckled, each support plate is adjusted onto a cushion block step with the coil size by the positive thread rod and the reverse thread rod, and is tightened by a nut, and then the adjustable low-voltage winding die is formed; the support die for winding a high-voltage line adopts a wood framework, and has the same shape as an inner cavity of a coil; during shaping, the building block type wood square blocks are arranged, and are filled into an inner cavity space of the low-voltage winding die. The adjustable type amorphous alloy transformer winding die has the advantages that the adjustable low-voltage winding die can be alternatively used with the high-voltage support die and the shaping wood square blocks, the die is immediately removed after the winding, and the winding die in a warehouse is not needed; a foil winding machine only needs to be equipped with five to six winding dies for standby, and the requirement of large-batch production of full series of products can be met; the cost is reduced, and the production efficiency is improved.

The invention relates to an amorphous alloy transformer with a three-dimensional antitorque clamp and an iron core parallel independent distribution structure. The amorphous alloy transformer comprises two pulling plates and an iron core group, and is characterized by also comprising an upper frame clamp component and a lower frame clamp component, wherein a side clamp component is connected between the upper end clamp component and the lower end clamp component; the tops of the pulling plates are connected with the inner side surface of an upper clamp component in the upper frame clamp component; the bottoms of the pulling plates are connected with the inner side surface of a lower clamp component in the lower frame clamp component; and a clearance is formed between the two pulling plates. The amorphous alloy transformer has the advantages that the structure is simple, the stressed state of the iron core in a product is greatly improved, the stressed distribution of the iron core is perfected, the no-load loss of the amorphous alloy transformer is relatively and greatly reduced, and the stability of an energy0saving index is greatly improved. At the same time, the high requirement on an assembling process in a product manufacturing process is reduced, so that the management of product manufacture can be reduced, and the yield of the product is improved to a relatively large extent.

An oil immersed stereo wound-core amorphous alloy transformer, comprising an iron core, a high-low voltage winding, leads and a tank. The core comprises three single frames made of amorphous alloy strips by winding and are identical in structure, and the single frames have a rectangular shape; the vertical sides of every two adjacent frames fit together fixedly to form a core pillar, and the horizontal sides of the single frame form iron yokes; the cross sections of the core pillars have an approximately circular or polygonal shape; the transformer further comprises a clamp, comprising a quasi-triangular upper and lower clamp, and posts, the lower clamp is provide with three food pads; the iron yokes in the lower portion of the iron core are located on the foot pads, and the high-low voltage winding is wound on the core pillars;

The invention discloses an amorphous alloy transformer core forming template and forming device which are used for manufacturing an iron core. The iron core comprises a window. The forming template comprises a substrate and a limiting strip, wherein the transverse length of the substrate is equal to the width of the window, the limiting strip is longitudinally arranged on the substrate, and a gap is formed between the limiting strip and the longitudinal edge of the substrate. By the adoption of the template, the weight of the template can be reduced, the material utilization rate is improved, multiple templates can be used for splicing to form templates of various sizes temporarily, the template purchase cost can be reduced correspondingly, and operation is easy and convenient, so that the size of the template is changed, the template can be used for iron cores of any sizes, the material purchase cost is saved, meanwhile, the production schedule can be accelerated, and production efficiency can be improved.

The invention discloses a manufacturing method of a transformer body of an oil immersion type amorphous alloy transformer. The manufacturing method includes the following steps: (1) annealing treatment is carried out on iron cores; (2) the iron cores are pushed to the testing position for testing according to the furnace exiting sequence; (3) coils for forming the transformer body of the transformer draw close; (4) iron core jackets are drawn off after the iron cores are pushed into the testing position; (5) packing is carried out; (6) binding is carried out, wherein the binding belt tension ranges from 1500 N to 2500 N according to different weights of the transformer body; (7) after an amorphous sheet layer on the outmost face is closed, a shock pad is placed on the outer face of the amorphous sheet layer, a silicon steel sheet hasp on the outer layer is tightened, the hasp part is firmly glued through adhesive tape, and the adhesive tape is used for firm gluing if the hasp is damaged; (8) the coils are cleaned; (9) the lap joint position is coated with glass cement; (10) upper clamp insulation is arranged, and an upper clamp is installed in place. By means of the manufacturing method, stable-performance annealing parameters can be guaranteed, the fixing effect is improved through an elastic insulation binding belt, and the sound insulation effect and the sound absorption effect can be improved.

The invention discloses a low-noise amorphous metal transformer. An iron core is made of an amorphous metal 2605HB1M material with high saturation flux density; after the iron core is lapped, the bottom of the iron core is provided with a rubber pad which is 8mm in thickness to reduce noise generated by magnetic-lag contraction; the outer side of the iron core is coated with a layer of nitrile rubber which is 1mm in thickness to hinder a travel path of the noise and reduce the noise; a shock-reducing rubber pad which is 20mm in thickness is arranged at the bottom of an oil tank, a joint of a transformer body hanger plate and a clamp is provided with a rubber pad which is 10mm in thickness, and the noise generated by vibration of the iron core is reduced. The noise is reduced by changing the material of the iron core and arranging the rubber pads to hinder the travel path of the noise and reduce vibration frequency, so that the noise of the amorphous metal transformer can be controlled to be lower than 45dB and the noise is obviously reduced. The iron core is made of the new amorphous metal 2605HB1M material, the noise is reduced and the energy-saving effect is better.

The invention relates to an amorphous alloy transformer body structure with anti-short circuit capability, which is a three-phase four-frame iron core structure, including upper and lower layers of amorphous alloy iron cores and three-phase windings A, B, and C, and also includes windings distributed in A , between phase B windings, between phase B and C windings, and C-type insulating plates outside the A and C phase windings, hard insulating cylinders in the A, B and C three-phase low-voltage windings, and the left and right sides of the body structure The pressing plate and the left and right clamps, the upper and lower pressing plates and the upper and lower clamps on the upper and lower sides of the body structure; the two layers of amorphous alloy cores are separated by the first reinforcing plate and the second reinforcing plate. In the present invention, through the arrangement of upper and lower clips, left and right side clips, hard insulating cylinder, first reinforcing plate, and second reinforcing plate, the winding can withstand sudden short circuit without destructive deformation and reactance exceeding the standard, amorphous alloy The iron core will not be damaged and affected by the deformation and compression of the windings, which reliably improves the short-circuit resistance of the amorphous alloy distribution transformer.

The invention discloses an amorphous alloy strip and a preparation method thereof. The amorphous alloy strip comprises the following components by mass percent: 10-15% of Si, 4-6% of B, 3-5% of C, 2-4% of Nb and the balance Fe. The preparation method of the amorphous alloy strip comprises the following steps: (1) Si, B, C, Nb and Fe at the corresponding mass percent are put into a crucible: (2) an inert gas is input to the crucible from the bottom of the crucible, passes through the interior of the crucible, then reaches the top of the crucible and is output, the internal vacuum degree of the crucible is kept constant, and slow heating is carried out till a mother alloy in the crucible is in a molten state; and (3) under a vacuum condition, the amorphous alloy strip is prepared by adopting a singlestick process. The amorphous alloy strip is mainly applied to an amorphous alloy transformer, the occurring probability of heterogeneous nucleation can be reduced, and a yield of the amorphous alloy strip is raised.