31results about How to "Improve magnetic utilization" patented technology

The invention discloses a flat linear vibration motor. The flat linear vibration motor comprises a shell internally equipped with accommodating space, a vibration unit accommodated in the accommodating space and suspended in the shell, and a sliding pair arranged between the vibration unit and the shell; the vibration motor further comprises an annular drive coil which is annularly arranged on the periphery of the vibration unit and used for driving the vibration unit to circularly vibrate along the vibration direction, and the driving coil drives the vibration unit to circularly vibrate along the vibration direction of the vibration unit after being electrified. The flat linear vibration motor is characterized in that restoring force is provided by repulsive force relatively generated by the same poles of the magnetic steel, the vibration unit is positioned by the sliding pair, and the drive coil is configured into a ring shape and annularly arranged on the periphery of the magnetic steel to improve the magnetic utilization rate, so that performance and service life of the motor cannot be affected when spring parts of a traditional motor are ineffective and fatigue, and the performance of the vibration motor is effectively increased.

The invention discloses an electromagnetic heating roller used for a corrugating machine, an application of the electromagnetic heating roller and a corrugating machine electromagnetic heating method, and belongs to the technical field of electromagnetic heating. The electromagnetic heating roller comprises a roller body and an electromagnetic heater. The electromagnetic heater is used for heating the roller body. The roller body is provided with a cavity for encapsulating heat-conducting liquid. The electromagnetic heater can heat the heat-conducting liquid through the roller body, so that steam is produced in the cavity of the roller body. The electromagnetic heater comprises a plurality of U-shaped magnets and an electromagnetic wire. The multiple U-shaped magnets are arranged on a straight line side by side in the axis direction of the roller body. The electromagnetic wire is wound at the two ends of the U-shaped magnets in a single-loop wire winding mode to form a coil. Corrugated paper can be uniformly heated through the electromagnetic heating roller, moisture balance of the corrugated paper in the whole width direction is ensured, and the product quality is improved.

The invention discloses a magnetic latching relay of a directly-operated type magnetic circuit structure. The magnetic latching relay comprises a magnetic circuit part, a contacting part and a pushing part. The magnetic circuit part comprises a coil, an iron core, an inner yoke, an outer yoke, two permanent magnets and two pole pieces. The inner yoke and the outer yoke are of an opening-shaped structure respectively. The iron core is arranged in the coil. The coil is arranged in the inner yoke in a sleeved mode. The outer yoke is arranged outside the inner yoke in a sleeved mode. The two pole pieces are arranged between the inner yoke and the outer yoke respectively. Movable gaps are arranged between the pole pieces, the inner yoke and the outer yoke. The two ends of the iron core penetrate out of the inner yoke respectively and are fixed with the corresponding pole pieces. The two permanent magnets are symmetrically arranged between the inner yoke and the outer yoke with the iron core as an axis respectively. The two faces of each permanent magnet are attached with the inner yoke and the outer yoke respectively. According to the magnetic latching relay, large driving power can be formed during relay coil electrifying, large retention force can be formed during relay coil outage, the magnetic latching relay has the advantages that magnetic disturbance resisting capacity is enhanced, product size is reduced, and cost is lowered.

The invention relates to the technical field of relays, in particular to a solenoid straight-through type relay, which comprises a base, and a magnetic circuit component, a contact component and a pushing card which are arranged on the base, wherein the magnetic circuit component controls contact or separation of the contacts of the contact component through the pushing card, the magnetic circuit component comprises a coil holder and an iron core, the coil holder is provided with a through hole in the contact and separation direction of the contacts for one end of the pushing card to enter, a coil is wound outside the coil holder to form a magnetic control loop, the iron core and the pushing card are connected to form an iron core component, theiron core componentcan linearly move in the coil holder, the iron core component is matched with the coil holder through hole to form a circumferential anti-rotation structure, the iron core is sheet-shaped, and one side of the iron core in the thickness direction and one side of the pushing card are provided with at least one connecting position, so that the side surface of the iron core is matched with the side surface of the pushing card, and the iron core drives the pushing card to move back and forth. According to the invention, the iron core is low in machining difficulty, the assembling process of the iron core and the pushing card is simpler, more convenient and faster, and the stability of linear motion of the whole formed iron core component in the coil holder is guaranteed.

The present application discloses a hybrid magnetic circuit superconducting induction heating device, which includes: a magnetic core, a superconducting coil arranged around the magnetic core, and a plurality of parallel iron yokes distributed around the circumferential direction of the magnetic core. The upper end is provided with an upper magnetic plate, and the lower end of the magnetic core is provided with a lower magnetic plate; the superconducting coil is connected to an external power supply through a current lead so that the superconducting coil can carry a current, thereby generating a magnetic field; the upper end surface of each iron yoke / There is a first air gap for placing the workpiece to be heated between the lower end surface and the side wall of the upper magnetic permeable plate / lower magnetic permeable plate; after the workpiece to be heated is placed in the first air gap, the permeable core converts the superconducting coil to The magnetic field is conducted to multiple parallel iron yokes to form multiple series-parallel hybrid magnetic circuits. The device provided by the application can simultaneously heat multiple workpieces to be heated, and increase the heating efficiency of the workpieces to be heated, and the hybrid magnetic circuit enables the device to have a better adjustment function corresponding to the heating process and power.

The disclosure provides a high-acceleration, high-stability high-temperature superconducting maglev vehicle system, including a train system and a track system. The train system includes a car body, a brush arranged on the car body, a low-temperature refrigeration container arranged at the bottom of the car body, Multiple rows of high-temperature superconducting coils and a refrigeration system for cooling multiple rows of high-temperature superconducting coils arranged in a low-temperature refrigeration container; the track system includes a track body, multiple rows of power coils, and multiple rows of suspension guide coils; traveling perpendicular to the car body In the direction of , the multi-row high-temperature superconducting coils, multi-row power coils and multi-row suspension steering coils are all symmetrical to the central axis of the car body, and the power coils and high-temperature superconducting coils are arranged alternately with each other, and the multi-row suspension steering coils are distributed in multiple Columns on both sides of the HTS coils. The disclosed superconducting maglev train system with the above structure can effectively improve the utilization rate of the magnetic field and the power density of the motor, and the train can have higher stability under ultra-high-speed operation.

The invention discloses a hybrid magnetic circuit superconducting induction heating device based on a split iron core. The device comprises a magnetic conductive iron core, a superconducting coil arranged around the magnetic conductive iron core and a plurality of parallel iron yokes circumferentially distributed around the magnetic conductive iron core. The magnetic conductive iron core is composed of a plurality of sub iron cores formed by longitudinally cutting a columnar iron core; an upper concentrating flux plate is correspondingly arranged at an upper end of each sub iron core, and a lower concentrating flux plate is correspondingly arranged at a lower end of each sub iron core; the number of the iron yokes is equal to that of the sub iron cores, each iron yoke corresponds to one sub iron core, a first air gap is formed between an upper end face / lower end face of each iron yoke and a side wall of the upper concentrating flux plate of the upper end or a lower concentrating flux plate of the lower end of the corresponding sub iron core, and the first air gaps are used for containing workpieces to be machined. A to-be-heated workpiece can rotate under the action of external force to generate induced current to heat the to-be-machined workpiece. The hybrid magnetic circuit superconducting induction heating device based on the split type iron core is provided with the independent anti-interference magnetic circuit, and therefore, the better heating adjusting characteristic is achieved.

The present disclosure provides a high-thrust high-temperature superconducting linear motor, which includes a mover part and a stator part, and the mover part includes a low-temperature refrigeration container, multiple rows of high-temperature superconducting coils arranged in the low-temperature refrigeration container, and a plurality of rows of high-temperature superconducting coils for cooling multiple rows of high-temperature superconducting coils. Refrigeration system of superconducting coils; the stator part includes a track body, multiple rows of power coils and multiple rows of suspension guide coils; in the direction perpendicular to the travel of the mover part, multiple rows of high temperature superconducting coils, multiple rows of power coils and multiple rows of suspension The guide coils are symmetrical to the central axis of the mover part, there is a row of power coils between two adjacent rows of high-temperature superconducting coils, and a row of high-temperature superconducting coils between two adjacent rows of power coils, and multiple rows of suspension guides The coils are distributed on both sides of multiple columns of high temperature superconducting coils. The maglev train using the superconducting linear motor of the present disclosure can improve the utilization rate of the magnetic field, obtain greater thrust and stability, and enable the train to have a higher running speed.

The invention relates to the field of magnetic materials, in particular to an instrument composite magnet with magnetic temperature compensation. The instrument composite magnet with the magnetic temperature compensation solves the problems that a magnet and a magnet temperature compensation material in the prior art are processed respectively and then are assembled, are time-wasting and labor-wasting and have high costs, the two processes adopt a binding agent, a permanent magnet system cannot keep stable along with temperature changes, and the application range is limited to a certain extent in particular in certain high temperature fields. The invention also solves the problem that the stability cannot be kept along with the temperature changes and the like, and provides the instrumentcomposite magnet with the magnetic temperature compensation, particularly a composite magnet of which the magnetism supply part is made of a sintered alnico material. The instrument composite magnet with the magnetic temperature compensation is prepared by the following steps of: preparing magnet powder and magnetic temperature compensation powder respectively; pressing and forming the powder; sintering the powder; performing heating treatment on the powder; and performing grinding fine machining on the powder.

Disclosed are an arc extinction magnetic circuit having misaligned magnetic steel and a direct-current relay thereof. The arc extinction magnetic circuit comprises a contact portion. The contact portion comprises two stationary contacts respectively for providing current inflow and outflow and a movable contact spring. Two ends of the movable contact spring respectively cooperate with the two stationary contacts. Each of the outer sides of the two ends in the length direction of the movable contact spring is respectively provided with a piece of first magnetic steel. Each of the outer sides of the two ends in the width direction of the movable contact spring is respectively provided with a piece of second magnetic steel, and the two pieces of second magnetic steel are misaligned. The two pieces of first magnetic steel face each other with opposite poles, and the two pieces of second magnetic steel also face each other with opposite poles. In the present invention, two pieces of magnetic steel in the middle in the length direction of the movable contact spring are misaligned, the distance between the two adjacent pieces of magnetic steel is reduced, the strength of a magnetic field between the two adjacent pieces of magnetic steel is then enhanced, thereby greatly enhancing the strength of an arc extinction magnetic field and the strength of the magnetic field which provides ampere force for the movable spring, and substantially increasing the magnetic utilization rate of the magnetic steel.

The invention discloses a magnetic conductive pad for a magnetic template. The magnetic conductive pad for the magnetic template comprises a magnetic conductive body matched with the magnetic templatein the longitudinal length direction, and the transverse section of the magnetic conductive body is shaped like a Chinese character 'tu'; the portions, corresponding to all resin layers of the magnetic template, of the magnetic conductive body are provided with through holes in the transverse direction, the through holes vertically penetrate through the magnetic conductive body, the two sides ofthe through holes are provided with hole walls, a non-magnetic conductive material is poured into the through holes, and a non-magnetic conductive body is formed after the non-magnetic conductive material is completely hardened; and the outer surface of the non-magnetic conductive body is flush with the outer surface of the magnetic conductive body, the non-magnetic conductive body and the magnetic conductive body are integrated to form the magnetic conductive pad, the narrow upper surface of the magnetic conductive pad serves as a workpiece installing surface, the wide low surface of the magnetic conductive pad serves as a magnetic template contact surface, and the magnetic conductive portions of the magnetic conductive pad correspond to magnetic poles of the magnetic template. The magnetic conductive pad for the magnetic template has the advantages that guide rail machining is convenient when the magnetic conductive pad is used, and the magnetic template can be well protected by themagnetic conductive pad.

The application discloses a superconducting induction heating device for simultaneous heating of multiple workpieces, comprising: a magnetically conductive core, a superconducting coil surrounding the magnetically conductive core, and an iron yoke. Wherein, the magnetic conducting core is a cylindrical iron core, and the upper end of the magnetic conducting core is provided with an upper magnetic conducting plate, and the lower end of the magnetic conducting core is provided with a lower magnetic conducting plate; current, and then generate a magnetic field; each iron yoke is connected to the upper magnetic plate and the lower magnetic plate, and each iron yoke is provided with an air gap, and the air gap is used to place the workpiece to be heated; when the workpiece to be heated is placed in the air gap Finally, the permeable core conducts the magnetic field generated by the superconducting coil to multiple iron yokes connected in parallel to form multiple magnetic circuits mixed in series and parallel. The device provided by the application can simultaneously heat multiple workpieces to be heated, and increase the heating efficiency of the workpieces to be heated, and the hybrid magnetic circuit enables the device to have a better adjustment function corresponding to the heating process and power.

The present invention discloses a taper magnetic bearing switch reluctance motor and a control method thereof. The motor is formed by one switch reluctance motor and two taper magnetic bearings; a taper stator is formed by 4 E-shaped structures, the central tooth of each E-shaped structure is winded with a vertical suspension winding, is winded at, each of other two teeth are respectively winded with an axial direction suspension winding, the vertical suspension windings and the axial direction suspension windings are connected in series to form a set of the axial direction suspension winding; an armature winding crosses the two taper stators and a reluctance motor stator to form 3-phase armature winding; rotation control is the same as a traditional switch reluctance motor control mode, and bias flux is generated for suspension; and five suspension forces are associated with the 3-phase armature winding current, current of 4 vertical suspension windings and current of 2 vertical suspension windings; the two vertical suspension windings can optimize the bias flux to allow the generated bias flux to be equal when the 3-phase armature winding performs individual excitation so as to solve the problem that the vertical suspension force output is unbalance. The motor system is high in integration degree and high in current utilization rate and realizes decoupling between the torque and the suspension force.

According to the back-to-back multiple excitation hybrid generator based on homodromous electromagnetic pole coupling, the electric excitation part and the permanent magnet power generation parts are arranged back to back, and the permanent magnet power generation parts are symmetrically arranged at the two ends of the electric excitation part, so that the structures of the electric excitation part and the permanent magnet power generation parts and the overall layout of the electric excitation part and the permanent magnet power generation parts are optimized; the magnetic efficiency and the magnetic utilization rate of electric excitation are improved, and the characteristics of high power density and excellent electric output characteristic are realized; and meanwhile, in cooperation with related power electronic means, the system cost can be greatly reduced, the overall efficiency is improved, the system is more suitable for being applied to related occasions such as aerospace, and the applicability of the structure is improved.

The invention discloses a rotor iron core for a brushless electric machine and belongs to the field of fans.The rotor iron core solves the problem that in the prior art, the magnetic flux leakage phenomenon of a rotor of an electric machine is serious.The rotor iron core for the brushless electric machine comprises a rotor body, the rotor body comprises a magnetism insulating bracket provided with a shaft hole, the periphery of the magnetism insulating bracket is provided with a plurality of iron cores at intervals, and a mounting groove for mounting a corresponding magnet is formed between every two adjacent iron cores.

The application discloses a superconducting induction heating device for simultaneously heating multiple workpieces based on a split iron core, which includes a permeable core, a superconducting coil surrounding the permeable core, and an iron yoke. Wherein, the magnetically permeable core is composed of a plurality of divided iron cores cut longitudinally from the cylindrical iron core; the upper end of each divided iron core is correspondingly provided with an upper magnetically conductive plate, and the lower end of each divided iron core is correspondingly provided with a lower guide plate. Magnetic plates; the number of iron yokes is the same as the number of sub-iron cores, the upper end face / lower end face of each iron yoke is connected with the upper / lower magnetic permeable plate of the corresponding sub-iron core, and each iron yoke is provided with a gas The air gap is used to place the workpiece to be heated; the workpiece to be heated can be rotated under the action of an external force to generate an induced current to heat the workpiece to be processed. The device provided by the present application can simultaneously heat multiple workpieces to be heated and increase the heating efficiency of the workpieces to be heated. The split iron core in the device constructs an independent magnetic circuit so that the device has more stable heating adjustment characteristics.

The application discloses a hybrid magnetic circuit superconducting induction heating device based on a split iron core, which includes a permeable core, a superconducting coil arranged around the permeable core, and a plurality of parallel iron yokes distributed circumferentially around the permeable core , the magnetically permeable core is composed of a plurality of sub-cores cut along the longitudinal direction of the cylindrical iron core; The number of iron yokes is equal to the number of divided iron cores, each iron yoke corresponds to a divided iron core, and the upper end surface / lower end surface of each iron yoke is connected to the upper magnetic conductive plate at the upper end of the corresponding divided iron core / lower end of the lower end There is a first air gap between the side walls of the magnetic conductive plate, and the first air gap is used to place the workpiece to be processed; the workpiece to be heated can rotate under the action of an external force to generate an induced current to heat the workpiece to be processed. The hybrid magnetic circuit superconducting induction heating device based on the split iron core provided by the present application has an independent anti-interference magnetic circuit and thus has better heating regulation characteristics.

The invention provides an armature assembly and a 1 / 2 crystal cover magnetic latching relay with the armature assembly. The armature assembly comprises two armatures, two pieces of magnetic steel, twopressing shaft pieces and a connecting shaft, wherein the two armatures are arranged in a front-back symmetrical mode, the two pieces of magnetic steel are arranged between the two armatures and distributed in a left-right spaced mode, and the two pole faces of the magnetic steel are tightly attached to the surfaces of the two armatures respectively; the two pressing shaft pieces are arranged onthe upper sides and the lower sides of the armatures respectively and fixedly connected with the two armatures; and the connecting shaft is arranged between the two pieces of magnetic steel, and the two ends of the connecting shaft penetrate through the two pressing shaft pieces respectively. The armature assembly forms a bridge-type double-armature structure and comprises two working air gaps, sothat the initial suction force of a magnetic circuit system of the relay is effectively improved, and the relay has good dynamic characteristics. Meanwhile, the structure has good symmetry, and the environmental resistance of the relay is effectively improved; and the problem that the retention force of the relay is asymmetric in self-holding and resetting states is solved, and the relay correction efficiency is effectively improved.