42 results about "Magnetic insulation" patented technology

In various embodiments of the invention, a cooled nuclear magnetic resonance (NMR) probe can utilize a sliding band capacitor which can be moved relative to a parent coil inner conductance tapered skirt to adjust the frequency of the parent coil to allow the parent coil to detect the resonance of at least two nuclei without requiring leads between the parent coil and a lock coil. In this manner a cooled NMR probe can be provided without the disadvantages of prior art cooled NMR probes. In an embodiment of the invention, the sliding band capacitor comprises a diamagnetic insulator with a first volume magnetic susceptibility, at least one paramagnetic metal with a second volume magnetic susceptibility and at least one diamagnetic metal with a third volume magnetic susceptibility, where the sum of the first volume magnetic susceptibility, the second volume magnetic susceptibility and the third volume magnetic susceptibility is approximately zero.

The invention relates to a magnetic attraction insulation shield capable of being installed without power cut, which comprises a shell, the shell comprises a left shell and a right shell, the top end of the left shell is connected with the top end of the right shell, the upper parts of the left shell and the right shell are respectively provided with a connecting buckle, the connecting buckles are fixed on the surface of the left shell or the right shell, a connecting rope is also arranged above the shell, and the connecting rope is connected with the left shell and the right shell. One end of the connecting rope is connected with the connecting buckle on the surface of the left shell, the other end of the connecting rope is connected to the connecting buckle on the surface of the right shell, and the shells, the connecting buckles and the connecting rope are all made of insulating materials. The magnetic attraction insulation shield installed in an electrified mode is convenient and easy to install and high in efficiency.

A device with adjustable exchange bias based on a low-dimensional antiferromagnetic / ferromagnetic insulator heterojunction. A device with adjustable exchange bias based on a low-dimensional antiferromagnetic / ferromagnetic insulator heterojunction. (1) A heterojunction is formed by covering an antiferromagnetic topological insulator with a low-dimensional ferromagnetic insulator; there are two configurations of the heterojunction, namely, the ferromagnetic insulator completely covering the antiferromagnetic topological insulator and the ferromagnetic insulator semi-covering the antiferromagnetic topological insulator; (2) A non-magnetic insulating protective layer is covered above the heterojunction; (3) In the heterojunction, an obvious exchange bias effect can be observed; (4) By changing the coverage range of the ferromagnetic insulator, the sign of the exchange bias can be regulated; (5) The material system used for the device is van der Waals layered materials; by changing the coverage range of the ferromagnetic insulator, the sign of the exchange bias can be regulated; below the Curie temperature and Néel temperature of the magnetic material, the anomalous Hall effect can be measured by using low temperature and magnetic field for magnetotransport measurement.

The invention discloses a method for improving corrosion resistance of a pure aluminum surface in a NaCl solution, and relates to the technical field of high-current pulsed ion beams, an experiment is carried out on a TEMP-6 type HIPIB device, and a polymer anode unipolar pulse mode external magnetic insulation ion diode is adopted to generate 70% C and 30% H ion beams for an irradiation experiment; the ion beam parameters are as follows: the acceleration voltage is 300kV, the pulse width is 70-80ns, the beam density is 100A / cm < 2 >, the irradiation frequency is five times, and the background vacuum degree of a vacuum chamber during irradiation is 10 <-3 > Pa.

The utility model provides a magnetizing device. The magnetizing device comprises an insulator, a plurality of magnetic conductive iron cores and a plurality of coils, the insulator is cylindrical; the magnetic conductive iron cores are arranged on the insulator in a sleeving mode and distributed in the first direction. A containing cavity is formed between every two adjacent magnetic conductive iron cores. A product to be magnetized is sleeved on the magnetic conductive iron core; the first direction is the axis direction of the insulator; a group of coils are arranged in each accommodating cavity; the winding directions of two adjacent groups of coils are opposite, and a non-magnetic insulating material is filled between the coils and the magnetic iron core. In the application, each group of coils form a reverse magnetic field, magnetic lines of force form a radial magnetic field along the circumferential radial direction through each layer of magnetic conductive iron cores, and are arranged along the axial direction, so that a plurality of radial radiation rings with alternating N-S poles are formed at one time, and the number of radial radiation magnetic poles is equal to the number of layers of magnetic conductive iron cores. The magnetizing device not only can magnetize a plurality of to-be-magnetized products at the same time, but also is not limited by the length size of the to-be-magnetized products, and the magnetizing efficiency of the to-be-magnetized products is improved.

The invention discloses a building facade hollowing rapid detection system and method based on computer vision. The detection system comprises a magnetic thermal insulation layer, an unmanned aerial vehicle-mounted electromagnetic detection module, a visual heat map module and a computer vision module. The detection method comprises the steps of magnetic induction intensity detection, magnetic induction intensity data processing, visual analysis, computer visual identification and model self-optimization. A magnetic tracing medium is introduced into a building facade heat preservation layer and is matched with a high-sensitivity magneto-dependent sensor to collect magnetic induction intensity data in real time, and magnetic induction intensity changes caused by tiny hollowing can be accurately captured; key parameters such as the position, the area and the void degree of the hollowing are automatically extracted from the visual heat map by adopting the convolutional neural network model, so that the defect that only qualitative judgment or macroscopic positioning can be realized in a traditional method is overcome, and an accurate quantitative basis is provided for hollowing defect evaluation.

The present disclosure relates to magnetic devices such as magnetic transistors and magnetic memories that are regulated by magnetic spin transfer torque. According to one embodiment, a magnetic device based on magnetic spin transfer torque can include a first spin Hall effect layer, a first ferromagnetic insulating layer formed on the first spin Hall effect layer, an anti-ferromagnetic insulating layer formed on the first ferromagnetic insulating layer, a second ferromagnetic insulating layer formed on the anti-ferromagnetic insulating layer, and a second spin Hall effect layer formed on the second ferromagnetic insulating layer.

The utility model discloses a label production printing device which comprises a base, a vertical plate is fixed to the outer wall of the top of the base, a first driving motor is fixed to the outer wall of one side of the vertical plate, the output end of the first driving motor is connected with a first conveying roller through a coupler, and an elastic piece is installed on the outer wall of the top of the base and comprises an installation shell and a sliding rod. The mounting shell is fixed to the outer wall of the top of the base, the sliding rods are movably connected to the inner wall of a through hole formed in the top of the mounting shell, permanent magnets are fixed to the bottoms of the sliding rods, electromagnets are fixed to the inner wall of the bottom of the mounting shell, magnetic insulation springs are fixed between the tops of the electromagnets and the bottoms of the permanent magnets, and supporting roller pieces are mounted at the tops of the two sliding rods. Through the elastic force of the magnetic insulation spring in the elastic piece and the repulsive force generated by electrification of the electromagnet, the supporting roller piece and the first conveying roller are tightly attached, the friction force between the supporting roller piece and the first conveying roller is improved, the stability and reliability of conveying of printed label paper are ensured, and the problem of label paper accumulation is effectively avoided.

The application provides a multi-terminal alternating permanent magnet one-way driving device and a control method, and belongs to the technical field of permanent magnet driving. The device comprises an A terminal and a B terminal, and rotors, intermittent stators, magnetic insulation layers, electromagnetic clutches and one-way rotation mechanisms are arranged at the two terminals respectively. The magnetic insulation layers selectively block or conduct the magnetic flux path, and the dynamic coupling and decoupling of the electromagnetic clutches are combined to realize the alternating working mode of the double rotors. The control system corrects the phase difference of the rotors in real time through a phase compensator and a Hall sensor, and ensures continuous power output. The application solves the problems of low magnetic energy conversion efficiency, discontinuous motion and dead point of the existing permanent magnet driving device, has the advantages of high efficiency, energy saving, stable output, modular expansion and the like, and is suitable for new energy vehicles, industrial transmission and grid-connected and off-grid power generation scenes.

The invention discloses an air-cooled permanent magnet motor using a heat pipe to enhance heat dissipation, and relates to the technical field of permanent magnet motors, the air-cooled permanent magnet motor comprises a motor outer shell, and a noise reduction heat dissipation assembly is arranged on the outer side of the right end of the motor outer shell. The problems that air cooling heat dissipation mainly utilizes a fan system to cool a casing, an end cover and other external parts, heat in a motor base cannot be directly and rapidly transferred to the environment, internal temperature accumulation is easily caused, limitation of insulating paint, insulating paper, air and other low-heat-conductivity materials in the motor exists, and key heating parts in the motor are not prone to heat dissipation are solved. In the prior art, heat generated by an end winding and a middle iron core cannot be quickly transmitted to a cooling shell, so that a large amount of heat is accumulated in key parts of the motor, a local high-temperature area is formed, and adverse consequences of magnetic steel excitation loss, insulation aging and the like are caused, and meanwhile, a fan is adopted for cooling, so that a large amount of noise is generated in a long-time use state, and the service life of the motor is prolonged. And the quietness of the use environment is influenced.

The application discloses a magnet shielding cabin for reducing power consumption and cost of a magnetohydrodynamic propeller. The application comprises a cabin body and magnet grooves and electrode grooves arranged on the cabin body, a fluid channel is arranged in the cabin body and penetrates through both ends of the cabin body, the magnet grooves and the electrode grooves are alternately and spacedly arranged and are arranged around the cabin wall of the cabin body, the magnet grooves are used for placing magnet elements, and the electrode grooves are used for placing electrodes, and a magnetic insulation layer is arranged on the side surface of the magnet groove.

A differential and common mode magnetic ring filter comprises a base, a magnetic core, a soft magnetic insulation partition plate, a coil and PINs. The soft magnetic insulation partition plate is arranged in the center of the base, meanwhile, the magnetic core is located in the center of the soft magnetic insulation partition plate, and the coil is wound around the magnetic core. A magnetic partition plate is arranged in the center of the soft magnetic insulation partition plate and is used for insulation; pINs are arranged at the four corners of the bottom of the soft magnetic insulation partition plate. According to the differential-mode and common-mode magnetic ring filter, the electromagnetic partition plate is designed in the magnetic core, the insulation performance of the partition plate is ensured, and the filter can pass a high-voltage test, so that the differential-mode inductance value is improved, and the effect is better when an EMI (Electro-Magnetic Interference) test is carried out.

A rotor for a permanently energized electrical machine includes at least two rotor poles arranged next to one another in the circumferential direction; a rotor iron core; and a permanent magnet assembly embedded in the rotor iron core for generating a magnetic air-gap flux density, the assembly having at least one permanent magnet per rotor pole and the permanent magnet being divided into at least two permanent magnet parts. A crosspiece is arranged between the at least two permanent magnet parts of a permanent magnet the crosspiece separates two hollow spaces for receiving the permanent magnet parts, has magnetically conductive support sections for increasing a mechanical stiffness of the rotor iron core and for discharging external magnetic fluxes in the event of an active short circuit introduced into the electrical machine, and has magnetically insulating flux-blocking sections for reducing magnetic leakage fluxes.

The invention provides a magnetic tunnel junction. The magnetic tunnel junction comprises a reference layer, a barrier layer and a free layer which are arranged in sequence, wherein the reference layer and the free layer are formed by staggered magnets, the included angle between the first crystal orientation of the staggered magnets and the tunneling direction is a first acute angle, and the reference layer and the free layer have local non-zero spin polarization in transverse momentum distribution obtained after integration in the inverted space momentum direction of the first crystal orientation. The average spin polarization on the transverse momentum distribution is zero; the barrier layer is made of a non-magnetic insulating material, the included angle between the second crystal orientation of the non-magnetic insulating material and the tunneling direction is a second acute angle, and the non-magnetic insulating material of the second crystal orientation and the staggered magnets of the first crystal orientation achieve lattice matching. According to the magnetic tunnel junction and the magnetic storage unit provided by the invention, the relatively high tunneling magnetoresistance effect of the staggered magnets under the specific crystal orientation can be utilized to ensure that the manufactured magnetic tunnel junction has a relatively large read window, and meanwhile, the characteristic that the magnetic tunnel junction does not express net magnetic moment to the outside can be utilized to avoid interference of an external magnetic field.

The invention discloses a permanent magnet packaging plane magnetic insulation oscillator and an electromagnetic wave generation method, and solves the problem of low efficiency of an existing magnetic insulation line oscillator. The permanent magnet packaging plane magnetic insulation oscillator specifically comprises an anode rectangular cylinder, a cylindrical permanent magnet arranged on the periphery of the anode rectangular cylinder, a plane cathode arranged in the anode rectangular cylinder, a non-uniform diffuse wave structure and a stepped load; the pulse driving source is arranged outside the cylindrical permanent magnet; the two ends of the anode rectangular cylinder are open, and the anode rectangular cylinder is electrically connected with the anode of the pulse driving source; the planar cathode and the stepped load are sequentially arranged in the rectangular anode cylinder in the z-axis direction, and a microwave energy extraction gap is formed between the planar cathode and the stepped load; the planar cathode is suspended in the middle of the anode rectangular cylinder and is electrically connected with the cathode of the pulse driving source; the two side faces of the stepped load in the x direction are connected with the corresponding inner walls of the anode rectangular cylinder. The non-uniform diffuse wave structure is arranged above the planar cathode and the stepped load; the permanent magnets are used for providing guide magnetic fields for electromagnetic waves.

An inductor component includes an element body, a coil in the element body, and a non-magnetic insulation layer covering at least part of the coil. The element body includes first and second magnetic layers laminated in order in a first direction. The coil includes a small-turn inductor wiring of 0.5 or less turns extending along a plane orthogonal to the first direction between the first and second magnetic layers. In a first cross-section orthogonal to an extending direction of the small-turn inductor wiring, the small-turn inductor wiring has a top surface facing in the first direction, a bottom surface facing in a second direction opposite from the first direction, a first side surface facing in a third direction orthogonal to the first direction, and a second side surface facing in a fourth direction opposite from the third direction.

The invention discloses a magnetic conductive insulating rod for an induction coil of an intermediate frequency furnace in the technical field of induction materials of the intermediate frequency furnace. The magnetic conductive insulating rod comprises 77-86.5 wt% of nickel zinc ferrite magnetic powder; 10 to 15 wt% of fumed silica powder; 1 to 5 wt% of mica fine powder; 0.001 to 0.005 wt% of a modified glass fiber; 0.5 to 3 wt% of polyimide; the magnetic conductive insulating rod for the intermediate frequency furnace induction coil is high in mechanical strength, has magnetic conductivity, can improve the overall magnetic induction efficiency of the induction coil, and has a certain energy-saving effect.

The invention relates to the field of brushless motors, and discloses a brushless motor based on a composite magnetic circuit and multi-channel cooling and a manufacturing method thereof.The brushless motor comprises a shell, the inner wall of the shell is fixedly connected with a heat dissipation shell, the inner wall of the shell is provided with a composite magnetic circuit structure, the inner wall of the composite magnetic circuit structure is connected with a winding, and the winding is arranged in the shell. A first rotating shaft is arranged on the inner wall of the winding, the outer wall of the first rotating shaft is rotationally connected to the interior of the heat dissipation shell, a main heat dissipation wheel is fixedly connected to the outer wall of the first rotating shaft, a first circular gear is fixedly connected to the outer wall of the first rotating shaft, a heat conduction mechanism is arranged at the tooth end of the first circular gear, and a heat dissipation mechanism is arranged on the outer wall of the shell. The problems of demagnetization, insulation material aging and the like caused by long-term high temperature of the composite magnetic circuit structure are relieved through heat dissipation in the heat conduction mechanism, heat dissipation is conducted from the outside through the heat dissipation mechanism, a multi-path heat dissipation channel is formed, cooling liquid is promoted to evenly flow through all areas of the shell, local heat accumulation is avoided, and the overall heat dissipation efficiency is improved.

To provide permanent magnet brake capable of being released manually.SOLUTION: A permanent magnet brake comprises a magnet housing (2) and an armature plate (3) cooperating with the magnet housing. The magnet housing (2) houses a permanent magnet (6) and an energizable coil (7). The magnet housing (2) has two housing components (9, 10) each providing one magnetic pole. One of the two housing components (9, 10) has two housing component portions (11, 12), and a separation portion (13) that at least partially magnetically isolates the two housing component portions (11, 12) from each other. The magnet housing is provided with a magnetic flux bridge (14) cooperating with the two housing component portions (11, 12). The magnetic flux bridge is formed movably, and can move from an in-use position to an out-of-use position and vice versa. The magnetic flux bridge (14) bridges the separation portion (13) in the in-use position.SELECTED DRAWING: Figure 1

The invention relates to the technical field of fault detection, in particular to a rail overhead line system fault detection device. According to the technical scheme, the sag detection assembly comprises a supporting plate, the inner wall of the supporting plate is in sliding connection with two symmetrically-arranged deviation sliding blocks, a friction deviation plate is connected between the two deviation sliding blocks in an up-down sliding mode, and a bimetallic coil spring is fixedly installed in the supporting plate. The bimetal coil spring is affected by the environment temperature, so that the bimetal coil spring expands with heat and contracts with cold, the bimetal coil spring adjusts the position of a magnetic insulation block through a shifting piece so as to adjust the magnetic attraction area of a magnet to an iron block, the extension length of a hydraulic telescopic rod is changed, the height of a friction offset plate is adjusted, and the friction offset plate can be adjusted at different temperatures. The drooping degrees of normal contact network wires are different, the detection height is adjusted according to the environment temperature, and misjudgment caused by the temperature influence on the drooping degree detection result is avoided.

The utility model relates to an electronic product support which comprises a supporting piece, a connecting piece and a connecting layer, the connecting piece is connected to the supporting piece through the connecting layer, and the supporting piece is connected with an electronic product or an electronic product protective shell through the connecting piece. When the electronic product is wirelessly charged, the supporting piece is positioned between the electronic product and the wireless charger; the supporting piece comprises a magnetic insulation main body and a magnetic piece arranged on the magnetic insulation main body, and the wireless charger is adsorbed on the magnetic insulation main body through the magnetic piece; the magnetic insulation main body comprises a connecting piece installation part, and the connecting piece is connected to the connecting piece installation part through a connecting layer. According to the electronic product support, the wireless charger can be attracted through the magnetic piece on the supporting piece, the requirement that a user plays while charging is met, and electronic equipment can be normally used during wireless charging; meanwhile, during wireless charging, when the magnetic insulation body is subjected to the magnetic force effect of a magnetic field, the original magnetic field cannot be affected, and the influence of the supporting piece on wireless charging transmission can be effectively reduced.

A stator includes a core and a molded midsection arranged to define a plurality of slots. The stator also includes a plurality of conductors wound within the slots. Portions of the midsection immediately adjacent to the slots include magnetic insulator embedded therein. The magnetic insulator is electrically insulating and has ferrimagnetic ordering. The stator further includes a plurality of non-magnetic wedges disposed between the conductors and an inner diameter surface of the stator.

The application provides a multi-path LTD parallel device for generating pulse large current, and aims at solving the technical problems of low energy transmission efficiency of the existing pulse large current generating device, incapability of driving high-voltage insulation stack of more than two layers by single-layer uniform distribution LTD pulse source, complex transition and conversion structure of coaxial output line and insulation stack, and inconvenient maintenance, etc. The multi-path LTD parallel device adopts impedance-matched coaxial output line and horizontal three-plate transmission line to realize multi-path electric pulse transmission, and deionized water insulation is adopted for the LTD secondary transmission line, the coaxial output line and the horizontal three-plate transmission line; through the staggered arrangement of the horizontal three-plate transmission line in the central gathering pool, the multi-layer high-voltage insulation stack of double-layer or four-layer structure can be driven under the condition of single-layer circumferential radial layout of the LTD pulse source; and then the pulse large current is transmitted and gathered to the physical load through the disc cone vacuum magnetic insulation transmission line on the vacuum side of the multi-layer high-voltage insulation stack.

The utility model discloses a novel non-magnetic concrete pumping complete device which comprises a pump pipe used for conveying concrete, a vehicle body, a concrete tank body and a discharging frame, the concrete tank body and the discharging frame are installed on the vehicle body, a pump pipe magnetic insulation coating is arranged on the inner side surface of the pump pipe, and stirring blades are installed in the concrete tank body. The inner side surface of the concrete tank body and the inner side surfaces of the stirring blades are provided with tank body magnetic insulation coatings, and the inner side surface of the discharging frame is provided with a discharging frame magnetic insulation coating. Concrete is separated from the inner wall of the concrete tank body and the body of the stirring blade through the tank body magnetic insulation coating, direct contact between the concrete and the inner wall of the concrete tank body and the stirring blade is prevented, the coating is compact and high in bonding strength, and the situation that scrap iron on the inner wall falls off and is doped into non-magnetic concrete in the stirring process is avoided; therefore, the problem that the magnetic index does not reach the standard due to impurity doping in the mixing process of the magnetic concrete is solved, and the product quality of the concrete is improved.

The invention discloses a negative polarity coaxial diode and a strong pulse ion beam generation method, and solves the problems that the ion beam generation efficiency of an existing ion beam diode is low, and the generation requirement of a high-energy and large-current strong pulse ion beam is difficult to meet, and the negative polarity coaxial diode specifically comprises a diode anode unit, a diode cathode unit and an ion beam forward transmission unit; the diode anode unit is used for being connected with a magnetic insulation transmission line outer cylinder of an external pulse power device; the diode cathode unit is arranged in the diode anode unit and is used for being connected with a magnetic insulation transmission line inner cylinder of an external pulse power device; and the ion beam forward transmission unit is arranged in the diode cathode unit and is electrically connected with the diode cathode unit.

An inductor component includes an element body, a coil in the element body, and a non-magnetic insulation layer covering at least part of the coil. The element body includes first and second magnetic layers laminated in order in a first direction. The coil includes a small-turn inductor wiring of 0.5 or less turns extending along a plane orthogonal to the first direction between the first and second magnetic layers. In a first cross-section orthogonal to an extending direction of the small-turn inductor wiring, the small-turn inductor wiring has a top surface facing in the first direction, a bottom surface facing in a second direction opposite from the first direction, a first side surface facing in a third direction orthogonal to the first direction, and a second side surface facing in a fourth direction opposite from the third direction.

The invention relates to the field of sensor processing, in particular to a sensor magnetic insulation package, a magnetic jig, a soft magnetic take-up and pay-off device and an assembly technology.The temperature sensor adopts ceramic magnetic insulation package and is formed through high-temperature sintering, so that ceramic has the performance of a magnet, and the mechanical strength and good insulation strength of original ceramic are kept; the production requirements are further met; a magnetic field is used as micro driving force and applied to full-automatic production of precise and fine electronic raw devices, a soft magnetic collecting and releasing device is additionally arranged on a mechanical arm, and the purposes of automatic correction guiding, automatic material clamping, automatic material releasing, automatic packaging and automatic positioning are achieved through mutual cooperation with magnetic field acting force among a jig and magnetic insulation packaging. The poor quality caused by uncontrollable factors of a traditional sensor production process is reduced, the production process is simplified, and automatic assembly of magnetic insulation packaging and sensor shell pouring sealant filling is achieved.

The application relates to a magnetic shielding dynamic degaussing simulation analysis method, an optimization method and a medium, wherein the simulation analysis method comprises the following steps: constructing a three-dimensional finite element model of a magnetic shielding structure, an internal air domain and an external infinite air domain; applying a magnetic insulation boundary condition to the outer surface of the external infinite air domain, and applying a constant geomagnetic bias field as a global static background field; applying a periodic alternating and exponentially decaying degaussing excitation to the magnetic shielding structure; under the degaussing excitation, based on a dynamic magnetization model, a multi-cycle step iteration and transient separation solving strategy is adopted to solve the dynamic evolution process of the magnetization intensity of the magnetic shielding material; after the degaussing excitation ends, the residual magnetization intensity distribution of the magnetic shielding material is determined, and the residual magnetic field distribution of the internal air domain is obtained based on the residual magnetization intensity distribution, so that the prediction accuracy and efficiency of the residual magnetic field are improved.

Optoelectronic transducers that convert a femtosecond (fs)-timescale laser pulse into an a.c. electrical current pulse with an extremely high frequency and a high quality factor (Q) are provided. Both the frequency and amplitude of the a.c. electrical current pulse can be dynamically tuned by the application of a varying bias magnetic field. The optoelectronic transducers are based on a trilayered freestanding membrane that functions as both an acoustic cavity and a magnon cavity. The freestanding membrane includes an electrical conductor layer, a magnetic insulator layer, and a dielectric layer arranged in a vertical stack.