70 results about "Conductor Coil" patented technology

The invention provides a test method and device for a motor active short-circuit relay, and a storage medium. The method includes the steps: performing the zero speed detection of a motor after a motor controller completes a low-voltage power-on operation, wherein when the motor controller is powered down, a first relay and a second relay are both switched on; controlling the second relay to be turned on if the motor passes the zero speed detection, and injecting a first excitation signal at the control ends of a first phase winding and a third phase winding through the motor controller; performing injection detection of the first excitation signal to determine whether the first excitation signal is successfully injected or not; controlling the first relay to be turned on if the first excitation signal is successfully injected, and obtaining a voltage across two ends of the first relay; and judging whether the power-on test of the first relay is successful or not according to the voltage across two ends of the first relay. The method can realize the turn-on test of the short-circuit relay, and ensures the reliability of the active short-circuit function of the vehicle motor duringdriving.

The invention relates to a cooling structure for an ultraprecise linear motor and belongs to the technical field of linear motors. The cooling structure solves the problem of proneness to heat exchange with environment caused by high side temperature of two-side surface-mounted cooling structures of existing linear motors. The cooling structure comprises a winding supporting portion, a winding and a heat conductive portion, wherein the winding is fixed on the surface of the winding supporting portion, the heat conductive portion is arranged on the surface on the outer side and fixedly connected with the winding supporting portion, the heat conductive portion is a copper foil ring which fits the outer profile of the winding and is sleeved and fixed on the surface on the outer side of the winding, or the heat conductive portion is a copper foil heat conductive ring formed by arraying multiple copper foil sections in a dispersed manner, the copper coil heat conductive ring fits the outer profile of the winding, and each copper coil section is fixed on the surface on the outer side of the winding. The cooling structure for the ultraprecise linear motor is suitable for cooling of linear motors.

The invention discloses a half-open type thrust magnetic levitation bearing. The bearing comprises a first magnetic ring, a second magnetic ring and a third magnetic ring, wherein the first magnetic ring, the second magnetic ring and the third magnetic ring are arranged in annular and laminating manners so as to form an annular magnetic pole; the magnetic pole of each of the magnetic rings is different from that of the adjacent magnetic ring; a first winding and a second winding of the annular magnetic pole are wound according to a predetermined half-open way, the lower part of the middle magnetic pole is recessed inwards so as to generate a winding space which meets predetermined conditions; and the magnetic pole arranged at the upper end extends, and thus, a complete circle of magnetic pole is formed after splicing. Based on the bearing, continuity and consistency of magnetic field strength of the magnetic poles of the half-opened axial thrust bearing can be basically reserved, and the half-open type thrust magnetic levitation bearing can be applied to high-speed rotation machines; and moreover, a more flexible mounting way can be obtained, particularly to large-size rotation machines.

The invention provides a preparation method of an inductor and the inductor, and the preparation method comprises the following steps: (1) mixing a magnetic powder raw material with a glue solution, sequentially carrying out granulation and pressing to obtain a magnetic core, and carrying out primary curing on the magnetic core; (2) winding a conductor coil, soaking the conductor coil into an insulating liquid for insulating treatment to form an insulating layer, and then filling the conductor coil into the magnetic core; and (3) magnetic slurry is injected into the magnetic core in the step (2), secondary curing is carried out, and an inductor blank is obtained. The coil can be prevented from being deformed, and the parasitic capacitance of the inductor is greatly reduced through insulation protection treatment.

The invention discloses a nuclear fusion armored spiral tube superconducting magnet winding and mold falling system and a use method, and relates to the field of research and development of superconducting coils for nuclear fusion. Before mold falling, the armored conductor coil is supported by the supporting seat, the outer limiting column and the inner limiting block. During initial die falling, the coil rotates along with the rotary platform and falls into the groove. Along with increase of the die falling depth, the number of layers of the outer limiting columns is increased, the roller chain drives the supporting seat to descend, the number of the inner limiting blocks is correspondingly increased, and next-step die falling is completed. After die falling is completed, the coil clamp clamps the coil, the roller chain rotates reversely, the supporting seat ascends, and the inner limiting part and the outer limiting part are gradually withdrawn. According to the system, automatic mounting and dismounting of inner limiting are achieved through the chain wheel module, the outer limiting column technology is combined, the die falling size is accurately controlled, and manual operation inconvenience is reduced. Meanwhile, through upward movement of the longitudinal movement mechanism, the capital construction requirement for the pit is reduced, so that the production efficiency is improved, the personnel safety is guaranteed, and the platform building cost and period are reduced.

This utility model discloses a polypropylene extrusion molding device, relating to the field of plastic molding technology. The polypropylene extrusion molding device includes a polypropylene extrusion unit with a feed inlet. A first motor is fixedly connected to one end of the polypropylene extrusion unit, and a support frame is fixedly connected to the bottom of the polypropylene extrusion unit. When it is necessary to change to a different specification mold, the current to the magnetic conductor coil is cut off, causing the magnetic conductor to lose its magnetism and the magnetic attraction between it and the permanent magnet inside the mold to dissipate. At this time, the old mold can be directly removed. After replacing it with a new specification mold, the new mold is placed against the sealing plate and aligned with the extrusion hole. The magnetic conductor coil is then energized, causing it to regain its magnetism and re-establish magnetic attraction with the permanent magnet inside the new mold. The entire process requires no additional mechanical fixing structure; mold replacement can be quickly completed simply by switching the current on and off, significantly improving the device's adaptability to different product specifications.

The application discloses a voltage-limited overvoltage protection component with a recoverable electromagnetic drive tripping mechanism, which is composed of a voltage-limited overvoltage protector and an electromagnetic drive tripping mechanism. In a normal state, the normally closed contact of the electromagnetic drive tripping mechanism is in a closed state, which does not affect the normal working state of the voltage-limited overvoltage protector and the protection state under a normal intensity overvoltage. When an overvoltage occurs, a pulse current flowing through the voltage-limited pressure-sensitive resistor induces a current in the upper metal disc of the electromagnetic drive tripping mechanism, which is opposite to the direction of the spiral conductor coil of the lower electromagnetic drive disc, so that the upper metal disc of the lower electromagnetic drive mechanism induces an electromagnetic repulsive force with the lower electromagnetic drive disc, thereby causing the normally closed contact of the electromagnetic drive tripping mechanism to break, effectively inhibiting the continuous effect of a subsequent power frequency or direct current arc on the voltage-limited protector, prolonging the service life of the voltage-limited overvoltage protection component, and effectively realizing the safe use coefficient and prolonging the service life of the voltage-limited overvoltage protection component.

The utility model relates to the technical field of loudspeakers, and discloses a planar diaphragm loudspeaker, which comprises a cylindrical shell, an upper cover and a lower cover are clamped at two ends of the shell, an upper magnet is fixed at one end close to the upper cover, and a second support is fixed at one end close to the lower cover. According to the plane vibrating diaphragm loudspeaker, conversion from audio signals to sound waves is achieved through interaction of a magnetic field and current, meanwhile, high-quality output of sound is ensured through design optimization, the upper magnet and the lower magnet are fixed through the fixing rod, and therefore the plane vibrating diaphragm loudspeaker has the advantages of being simple in structure and convenient to use. The stability of the magnetic field is ensured, and the reliability of the loudspeaker is further improved.

A laminated coil component includes a laminated body including insulating layers laminated in a length direction and a coil, and first and second external electrodes each electrically connected to the coil. The coil includes coil conductors each laminated together with the insulating layer in the length direction and electrically connected to each other. A lamination direction of the laminated body and a coil axis direction of the coil are parallel to a first main surface which is a mounting surface of the laminated body. The laminated body satisfies B_W≤200 μm, B_L≤400 μm, and 200 μm≤B_T, or B_T≤200 μm, B_L≤400 μm, and 200 μm≤B_W where dimensions of the laminated body in the width, height and length directions are defined as B_W, B_T, and B_L, respectively, and an inner diameter area of the coil is 7500 μm2 or more.

To provide a multilayer coil component that can improve a Q value.SOLUTION: A multilayer coil component includes an element body 2, a coil 3 disposed within the element body 2, and external electrodes 41 and 42 disposed on the surface of the element body 2. The coil 3 includes a plurality of coil conductors 30, each having a thickness and a path length. The external electrodes 41 and 42 are electrically connected to the coil 3. The plurality of coil conductors 30 include coil conductors 31, 34, and 37 and coil conductors 33 and 35. The coil conductors 33 and 35 have a path length longer than the path lengths of the coil conductors 31, 34, and 37, and have a thickness greater than the thicknesses of the coil conductors 31, 34, and 37.SELECTED DRAWING: Figure 2

A magnetorheological damper, wherein the damper comprises a housing that is at least partially filed with a magnetorheological fluid, and a magnetorheological valve disposed within the housing. The valve includes a magnetically permeable core having at least one coil reservoir formed therein, and at least one conductor coil, wherein each conductor coil is disposed around a portion of the core within a respective one of the coil reservoir(s). The valve additionally includes a fluid flow path adjacent the conductor coil(s). The fluid flow path is structured and operable to allow the magnetorheological fluid to flow adjacent the conductor coil(s). The valve further includes at least one coil cover, wherein each coil cover is disposed over a respective one of the coil(s) such that the respective coil is protected from exposure to magnetorheological fluid flowing through the fluid flow path.

This invention relates to the field of aluminum coil transportation technology, and more particularly to an aluminum coil transportation device, comprising: a transport component including a vehicle body, a box mounted on the vehicle body, a receiving cavity within the box, a first partition and a second partition respectively mounted on the inner wall of the box, a shelf between the first and second partitions, and a placement plate within the box; a trigger component including an extension plate, a receiving groove on the inner wall of the extension plate, a movable plate movably mounted within the receiving groove, and a movable column below the movable plate; and an adjustment component, which, by setting up a box for storing aluminum coils and layering placement plates within the box, allows the aluminum coils to be placed separately to avoid collisions and friction, and can be transported using the vehicle body after being properly stored.

An embodiment provides a conductive wire comprising a conductive base material having a linear shape, and an insulating coating film covering the base material. At least a part of a portion of the insulating film on the outer surface thereof is composed of a nanostructure region composed of nanofibers or nanoparticles.

The present disclosure provides a coil component including a magnetic substrate and a conductor disposed inside the magnetic substrate or on a surface of the magnetic substrate. The coil component further includes an external electrode disposed on a surface of the magnetic base. The external electrode includes a base electrode having a bonding portion bonded to the conductor end portion. The joint portion expands to the same range as the conductor end portion. The area ratio of the (111) crystal plane in the bonding portion is smaller than the area ratio of the other crystal planes in the bonding portion.

The invention relates to an inductance device and electronic equipment. The inductance device comprises a main body which comprises a plurality of dielectric layers which are mutually stacked; and at least one first inner electrode layer, wherein the at least one first inner electrode layer is arranged on the corresponding dielectric layer. The first inner electrode layer comprises a coil and a connecting conductor, the coil is arranged on one surface, in the thickness direction, of the corresponding dielectric layer, the coil is coiled into a spiral structure, the coil comprises a circumferential extension section and an avoiding coil section, and the avoiding coil section and the connecting conductor are adjacent and arranged at intervals; the avoiding coil section is positioned between the connecting conductor and the center of the spiral structure of the coil; at least part of the first inner edge face, facing the radial inner side of the coil, of the avoiding coil section and the second inner edge face, facing the radial inner side of the coil, of the connecting conductor have the contour shape matched with each other. According to the inductance device and the electronic equipment, the inductance value and the quality factor of the inductance device can be improved.

This laminated coil component is provided with an element body, a coil disposed in the element body, an external electrode disposed on the surface of the element body, and a connection conductor disposed in the element body. The coil includes a plurality of coil conductors arranged in one direction. The external electrode is adjacent to the coil in a direction orthogonal to the one direction. The connection conductor electrically connects the coil and the external electrode to each other. The plurality of coil conductors includes an endmost coil conductor including an end of the coil and physically connected to the connection conductor. The connection conductor has a thickness greater than a thickness of a portion of the coil having the smallest thickness.

The invention relates to the technical field of transformers, in particular to a structure for improving the insulation performance of the end of an axial split coil, which comprises a wire and an insulation paperboard arranged on the outer side surface of the wire, and a cushion block is arranged at the top of the insulation paperboard. A structure formed by the insulating cardboard and the cushion block is connected with the other group of the insulating cardboard and the cushion block in a longitudinal end-to-end mode, and a supporting strip is arranged at one end of the cushion block and located on the inner side diameter of a coil of the wire; according to the invention, the insulating cardboard wraps the three surfaces of the wire, the upper and lower surfaces of the insulating cardboard are bonded with the corresponding cushion blocks, and the slotted end parts of the corresponding cushion blocks are clamped into the clamping grooves of the supporting strips, so that the purposes of shortening the supporting strips, keeping away from the angle rings of the transformer body and preventing the insulation from being damaged are achieved, and the fault tolerance is increased; the reject ratio increased due to errors in manual and production manufacturing processes is reduced, the production difficulty is reduced, and the insulation performance is further improved.

This invention relates to the field of superconducting motor technology, and in particular to a low-loss superconducting motor and its design method. The low-loss superconducting motor includes a vacuum chamber, a stator assembly, and a mover assembly. The stator assembly includes a stator support frame with a planar top structure and a superconducting coil disposed on the planar structure. A protective cover is disposed above the superconducting coil, and a radiative heat shield is disposed on the protective cover. The mover assembly is disposed between the protective cover and the radiative heat shield. The mover assembly includes a frame-shaped mover support frame and a constant conductor coil. The temperature of the constant conductor coil is controlled by controlling the emissivity of the radiative heat shield, and the surface emissivity of the protective cover is used to cool the constant conductor coil. The invention also discloses a design method based on a low-loss superconducting motor. The air gap between the stator assembly and the mover assembly is small, which facilitates the achievement of a high magnetic field, reduces the Joule loss of the constant conductor coil, eliminates the need for air or water cooling pipes, and facilitates temperature control.

A multilayer coil component includes an element body, a coil disposed in the element body, an external electrode disposed on a surface of the element body, and a connection conductor disposed in the element body. The coil includes a plurality of coil conductors arranged along a direction. The external electrode is adjacent to the coil 3 in a direction orthogonal to the direction D1. The connection conductor electrically connects the coil and the external electrode. The plurality of coil conductors includes an endmost coil conductor including an end of the coil and physically connected to the connection conductor. The connection conductor has a thickness larger than a thickness of a portion having the thickness smallest in the coil.

The application discloses a transformer adopting a composite conductor coil and a connecting method of the composite conductor, and relates to the technical field of transformers, in particular to a transformer adopting a composite conductor coil, which comprises a core column and a coil wound on the core column, wherein the coil comprises, from top to bottom, an upper coil, a middle coil electrically connected with the upper coil and a lower coil electrically connected with the middle coil; the upper coil and the lower coil are formed by winding a first conductor; the middle coil is formed by winding a second conductor; the first conductor is a composite conductor comprising a plurality of sub-conductors; the second conductor is a composite conductor comprising a plurality of sub-conductors; and the number of the sub-conductors of the first conductor is greater than that of the second conductor. The application adopts multiple composite conductors at the two ends of the coil and two composite conductors at the middle part of the coil, so that the problem of increased eddy current loss and temperature rise caused by the magnetic field bending of the coil end can be solved, and the production cost is controlled.

The invention discloses coating equipment. The coating equipment comprises a process pipe, a base, a carrier and a coil. The base is arranged in the process pipe and is a conductor. The carrier is placed on the base and used for bearing a substrate, and the carrier is a conductor. The coil is wound around the periphery of the process pipe. Wherein the coil is used for introducing alternating current to generate an alternating magnetic field, and the base is used for generating eddy current under the action of the alternating magnetic field so as to heat the substrate. In this way, the heating efficiency of the coating equipment can be improved.

A coil structure for a stator of an electric motor having a rotor configured to rotate about an axis. The coil structure comprises a conductor configured to provide a coil; the coil comprising one or more turns of wire around a magnetic core of the stator to induce a magnetic flux in the magnetic core when in use. The conductor comprises one or more first portions comprising a plurality of sub-conductors in parallel with each other; and one or more second portions coupled in series with the one or more first portions. Each of the one or more second portions comprises a single sub-conductor or a smaller number of sub-conductors in parallel; and at least one coil comprises one of the one or more first portions and one of the one or more second portions. The transition between the first and second portions occurs at both axial outer ends of the magnetic core. The invention provides optimal use of the copper area in order to provide as low resistance as possible over the entire operating frequency range of the machine and provides a method of manufacturing electric motors and transformers that are effective over a wide frequency range.

Provided is a coupling inductor with which it is possible to adjust coupling coefficients of a plurality of coils provided in an element body. The present disclosure relates to a coupling inductor 1A-1D in which a first coil C1 and a second coil C2 that are arranged in an element body 10 and face each other in the stacking direction are magnetically coupled with each other, wherein: the element body 10 is provided with a magnetic layer ML containing first magnetic particles MP1, a plurality of coil conductors CD1, CD2 constituting the first coil C1 and the second coil C2, a first through conductor TH1 that electrically connects one end of the first coil C1 with a first external electrode 21 and extends in the stacking direction, a second through conductor TH2 that electrically connects the other end of the first coil C1 with a second external electrode 22 and extends in the stacking direction, a third through conductor TH3 that electrically connects one end of the second coil C2 with a third external electrode 23 and extends in the stacking direction, and a fourth through conductor TH4 that electrically connects the other end of the second coil C2 with a fourth external electrode 24 and extends in the stacking direction; and a coupling adjustment member 30 that adjusts the coupling coefficient between the coils is provided to at least part of the periphery of the first to fourth through conductors TH1-TH4.

The invention provides a nuclear fusion superconducting coil CICC type conductor winding and die falling device. A limiting column is installed in place according to a hole site in a rotary platform, and a first lifting machine and a second lifting machine stretch out and draw back in place according to a preset program; at the beginning of winding, the rotation driving module drives the gear module to drive the rotation platform module to rotate, and the coil is gradually limited between the limiting column and the connecting rod; and after the coil is subjected to die falling and winding, the coil clamp is clamped between the coils, the first lifter and the second lifter are controlled by a program to retract, the limiting columns are dismounted, and the coils can be taken out through a travelling crane. The second polygonal frame can arrange the same driving mechanism on the inner side of a coil with a smaller inner diameter. According to the technical scheme, the multiple sets of lifters capable of stretching out and drawing back in the radial direction are preset on the inner side of the coil, and the limiting columns arranged on the outer ring of the CICC type conductor coil are combined, so that precise control over the mold falling size of the CICC type conductor coil is achieved.

A conductive coil assembly for a magnetic resonance imaging (MRI) system includes a substrate. The conductive coil assembly also includes a first hollow conductor coil. The conductive coil assembly further includes a second hollow conductor coil. The first hollow conductor coil and the second hollow conductor coil are both disposed on the substrate relative to each other in an interleaved spiral pattern. Respective interiors of both the first hollow conductor coil and the second hollow conductor coil are configured to receive and to circulate a coolant to cool the conductive coil assembly.

The invention discloses a preparation method of a continuous metal armored cable, and the method comprises the steps: enabling a wire to automatically penetrate into a magnesium oxide ring, and obtaining a wire coil with the magnesium oxide ring; simultaneously disassembling the obtained steel coil and the wire coil with the magnesium oxide ring, and placing the wire coil with the magnesium oxide ring at the center of the steel belt forming the steel coil; carrying out U forming and O forming treatment on the steel belt, and carrying out straight seam welding on the formed pipe to obtain an armored outer protection pipe; performing deformation drawing treatment and heat treatment on the armored outer protection pipe to obtain a continuous metal armored cable; the wire, the magnesium oxide ring and the steel belt are determined according to a heater connected with a cable and a heating target layer where the heater is located. The production process of the straight slit continuous pipe is wide in application, suitable corrosion-resistant alloy can be selected according to environmental requirements, the high-temperature endurance strength and the corrosion resistance of the armored outer protection pipe are guaranteed, meanwhile, the wires and the insulating magnesium oxide rings are continuously filled while the continuous pipe is formed, and the production efficiency can be greatly improved.

The present invention discloses a planar diaphragm for suppressing nonlinear vibrations, comprising an upper washer and a lower washer, a diaphragm assembly being disposed between the upper and lower washers, a groove being provided on the side of the upper and lower washers close to the diaphragm assembly, and a frequency modulation assembly being disposed inside the two grooves to increase the tension of the diaphragm assembly while ensuring the flatness of the diaphragm assembly; the diaphragm assembly comprising a planar diaphragm, the planar diaphragm comprising an A surface and a B surface disposed opposite each other, and the A surface of the planar diaphragm being disposed correspondingly to the upper washer. By providing the diaphragm assembly, the present invention can reduce the mechanical strength difference of the planar diaphragm in the direction intersecting with the conductor coil through a plurality of uniformly distributed reinforcing ribs of uniform length during use of the planar diaphragm, thereby more evenly dividing the vibration, reducing the nonlinear distortion caused by the nonlinear division of the vibration, and improving the use effect of the planar diaphragm.

A conductive coil assembly for a magnetic resonance imaging (MRI) system includes a substrate. The conductive coil assembly also includes a first hollow conductor coil. The conductive coil assembly further includes a second hollow conductor coil. The first hollow conductor coil and the second hollow conductor coil are both disposed on the substrate relative to each other in an interleaved spiral pattern. Respective interiors of both the first hollow conductor coil and the second hollow conductor coil are configured to receive and to circulate a coolant to cool the conductive coil assembly.