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 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 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 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.

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.