152 results about "Magnet device" patented technology

The invention discloses an internally-inserted water-cooled magnet device for a high-field hybrid magnet. The internally-inserted water-cooled magnet device comprises a container assembly and a magnet coil assembly arranged in the container assembly. The container assembly comprises an upper barrel assembly, a container end cover, a hydraulic machine assembly, a center pipe assembly, an inner supporting assembly, a middle barrel assembly, a lower barrel assembly and an electric connecting assembly. The hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

The invention discloses a high-field water-cooling magnet device which comprises a container assembly and a magnet coil assembly, and the magnet coil assembly is located in the container assembly and communicated with the container assembly. The container assembly comprises a hydraulic machine assembly, and the hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

The invention provides a magnet device and a magnetron sputtering cathode, and relates to the technical field of magnetron sputtering. At least one first magnet is additionally arranged on the surface of a partial area in a curve area of an inner magnet and / or an outer magnet or replaced by at least one second magnet with higher residual magnetic field intensity, or at least one third magnet is additionally arranged between the curve area of the inner magnet and the curve area of the outer magnet; the horizontal magnetic field distribution of the curve area is alternated by strong and weak, so that the magnetic field distribution of the curve area is effectively improved, the diagonal effect is weakened or eliminated, the utilization rate of the target material is remarkably improved, the production cost is reduced, the implementation mode is more flexible, and the cost is lower.

The composite force field magnetic separation column comprises a separation cone frustum, the separation cone frustum is of a hollow structure, and a magnet device and a rotating shaft are arranged in the separation cone frustum; the magnet device is cylindrical and is arranged between the sorting cone frustum and the rotating shaft, and the rotating shaft is movably connected with the magnet device; a sorting screw is wound on the outer side of the sorting cone frustum, a blade of the sorting screw is fixedly connected with the rotating shaft, and the sorting screw can rotate relative to the sorting cone frustum; the bottom of the rotating shaft is connected with the transmission device and used for driving the sorting screw to rotate. The bottom of the sorting spiral is close to the feeding belt, and materials on the feeding belt are conveyed upwards through rotation of the sorting spiral. And an air blowing device is arranged on one side of the separation screw, so that non-magnetic materials or weakly magnetic materials on the separation cone frustum or the separation screw are blown away from the separation screw, fall to a tailing falling area and are taken away from a working area through a tailing belt, and magnetic concentrate products at the uppermost end of the separation screw are conveyed to a concentrate product area through a concentrate belt.

The invention discloses a novel water-cooled magnet coil end electromagnetic force control structure which comprises a coil A, a coil B, a coil C, a coil D, a coil E and a coil F. The coil A, the coil B, the coil C, the coil D, the coil E and the coil F are sequentially connected in series in a sleeving mode in the radial direction. The F coil comprises an F magnet coil, an F coil end plate, an F fixing rod, an F transition electric connecting ring, an F lower insulation supporting anti-rotation cylinder and a reinforcing rod. The coil assembly has the advantages that through the arrangement of the sectional insulating cylinder assembly, the insulating effect is achieved, the coil A is positioned instead of a fixing rod, the stability of the two ends of the F magnet coil is enhanced, the problems of movement and dislocation near an end plate during operation of the F coil are solved, and the service life of the F coil is prolonged. And the F transition electric connecting ring is prevented from being damaged under the condition of sudden power failure during operation of the mixed interpolation water-cooling magnet device.

The invention belongs to the technical field of synchrotron radiation light sources, and discloses a serial impact magnet device which comprises a shell assembly, a positive pulse electrode, a negative pulse electrode and a strip magnet. The shell assembly comprises a shell body and a side end cover which are detachably connected, and a magnetic core space is formed between the shell body and the side end cover. The positive pulse electrodes extend into the magnetic core space and are arranged at intervals. The negative pulse electrodes extend into the magnetic core space and are arranged opposite to the positive pulse electrodes, and the multiple negative pulse electrodes are arranged at intervals. The strip magnets are arranged in the magnetic core space, the strip magnets are connected between every two adjacent positive pulse electrodes, the strip magnets are connected between every two adjacent negative pulse electrodes, and the two strip magnets are spaced from each other to form a magnetic field space. The electron beam current can be transmitted in the magnetic field space. The tandem impact magnet device can improve the compact degree and the vacuum degree, facilitates the assembly of an internal structure, and can meet the injection requirements of electron beams of a synchrotron radiation light source.

The invention discloses a folding screen and electronic equipment, and relates to the technical field of electronics, the folding screen comprises two screen bodies, and the two screen bodies can rotate relative to each other to enable the folding screen to be in a cover opening state or a cover closing state; a first magnet device is installed in one screen body, a second magnet device is installed in the other screen body, the first magnet device comprises a first magnet and a reset structure, and the first magnet is rotatably installed in the corresponding screen body; the second magnet device comprises a second magnet; under the condition that the folding screen is in a cover closing state, the second magnet and the first magnet attract each other, so that the magnetic pole distribution direction of the first magnet is changed from the first direction to the second direction; when the folding screen is in the uncovering state, the reset structure drives the first magnet to rotate, so that the magnetic pole distribution direction of the first magnet is changed from the second direction to the first direction, and the magnetic force of the screen body surface where the first magnet is located is reduced. The risk that the screen is extruded by ferromagnetic foreign matter can be eliminated, and color bright spots or black balls are prevented from appearing on the screen.

The invention belongs to the technical field of hydrogen production, and particularly relates to a hydrogen production electrode automatic transfer clamp which comprises a rack, a flange plate is fixedly connected to the top of the rack, sliding mechanisms are installed on the four sides of the outer wall of the rack, and suction clamping mechanisms are connected to the sliding mechanisms and used for sucking and clamping electrodes. The six electric permanent magnetic devices are uniformly mounted at the bottom of the rack and are used for adsorbing the electrodes so as to improve the stability of the electrodes; and the eight leveling mechanisms are uniformly distributed on the upper side of the rack. Through cooperation of the sucking and clamping mechanism and the electric permanent magnetic device, the problems of separate grabbing of stacked electrodes and stable grabbing of a single electrode are successfully solved, automation of hydrogen production electrode transfer is achieved, traditional manual operation is replaced, instability of manual operation is avoided, and the production efficiency is remarkably improved.

The invention relates to the technical field of superconducting cables, and aims to provide a magnesium boride superconducting cable for a magnet device and a preparation method of the magnesium boride superconducting cable for the magnet device. Two magnesium boride superconducting single wires and an annealed copper wire are twisted together to form a first-stage cable, a second-stage cable is formed by compositely twisting four first-stage cables, and a third-stage cable is formed by compositely twisting four second-stage cables; and after the three-stage cable is twisted, a layer of 316L stainless steel strip is overlapped and lapped to reinforce protection so as to enhance the electromagnetic force resistance and stable operation capability of the cable, and a layer of high-temperature-resistant glass tape is overlapped and lapped on the outermost layer to serve as an insulating layer. The magnesium boride superconducting cable produced by adopting the structure and the method is used for winding a magnet coil, the cable is straight and free of undesirable phenomena such as bending and snakelike in the winding process, the wound coil is poured with epoxy resin, the voltage endurance capacity of the coil after pouring and curing reaches 15 kv or above, the coil is in a superconducting state at the temperature of 39 K, the high critical current density is achieved, and the coil can be used for manufacturing the magnet coil. And a relatively high magnetic field is generated, and the application prospect is wide.

The present invention discloses a method for preparing high-performance composite magnetic powder, which belongs to the field of magnetic material technology. The preparation method comprises: firstly preparing Sm2Fe 17 The invention relates to a method for preparing a magnetic particle and nitriding it to obtain a samarium iron nitrogen particle magnet; and during the high-energy ball milling process of metal Sm and metal Co, a mixture of the samarium iron nitrogen particle magnet and gasoline is sprayed into a mixed powder of metal Sm and metal Co in a spray manner, so that Sm and Co react chemically to achieve the synthesis of a hard magnetic phase Sm-Co phase, simplifying the preparation process, eliminating the smelting process, and avoiding the volatilization of Sm; finally, the magnetic mixed powder is subjected to a primary and secondary laser fast sintering nitriding and tempering heat treatment in a nitrogen atmosphere to finally obtain a high-performance composite magnetic powder. The method of the present invention has a simple process, is easy to form, reduces costs, and is conducive to the application of high-performance magnets in more permanent magnet devices.

The utility model relates to a dot matrix scanning type focused ultrasound beauty instrument which comprises a shell, a main control board, a swing arm, a magnet device and a focused ultrasound transducer installed at the follow-up end of the swing arm are arranged in the shell. A rotary mounting part is arranged in the middle of the swinging arm, one side of the rotary mounting part is a driving end, and the other side is a follow-up end; the driving end is provided with a coil claw, and a driving coil is installed in the coil claw. The follow-up end extends outwards to form a mounting seat, and a focused ultrasonic transducer is mounted on the mounting seat; the magnet device comprises a base and a shielding cover; a bottom driving magnet is fixed on the inner side of the base, a top driving magnet is fixed on the inner side of the shielding cover, the bottom driving magnet and the top driving magnet are arranged at an interval, and a part of the driving coil is located in a channel between the bottom driving magnet and the top driving magnet; and the rotary mounting part of the swinging arm is rotationally connected with the base of the magnet device. According to the utility model, pulse output and accurate positioning scanning of focused ultrasound are realized, and the use effect is improved.

The invention relates to a device (100) comprising a magnetorheological transmission device (1) having two rotating parts (2, 3) which can be moved relative to each other. A working gap (4) having a magnetorheological medium (5) is formed between the rotating parts (2, 3). An electrical coil arrangement (6) is used to generate a controllable magnetic field in the working gap (4). The additional brake (7) is used to brake the rotational ability of the rotating members (2, 3) when the magnetic field of the coil mechanism (6) disappears. The additional brake (7) comprises a magnet device (17) extending in the circumferential direction of the working gap (4), which magnet device comprises at least one magnet unit (27) having at least one permanent magnet (37) extending only over a part of the circumference.

The present disclosure relates to bitter plate-based magnet devices and a reactor apparatus using same. The reactor apparatus may comprise the magnet devices. The magnet device may comprise: an upper lead plate; a plurality of conductor plates; a plurality of insulator plates; and a lower lead plate. The magnet device can be formed to have a central hole. The conductor plates and the insulator plates can be stacked such that each insulator plate is disposed between two conductor plates. Each conductor plate can be formed to have a radial slot, and each insulator plate can be formed to have a radial slot that is wider in width in the circumferential direction than the radial slot of the conductor plate. According to the present disclosure, a bitter plate-based reactor apparatus is implemented such that high current density can be achieved and a miniaturized reactor can be fabricated.

The present application relates to the technical field of induction heating, and discloses a magnet device for induction heating. The device comprises: coils, wherein the number of the coils is at least four and is an even number, the at least four coils are evenly divided into two groups, and the two groups of coils are symmetrically arranged around an axis; and a driving unit arranged on the symmetry axis of the coils, the driving unit being used for driving a metal material to be heated to rotate. According to the present application, an even number of coils are combined to form an annular coil device, so that a larger and more uniform magnetic field can be generated in the center, facilitating the improvement of the eddy current heating effect.

The application provides a magnet device and a magnetron sputtering cathode with reduced edge magnetic leakage, and relates to the technical field of magnetron sputtering. By adjusting the total residual magnetism ratio of the inner magnet and the outer magnet, the magnetic field distribution is improved, the edge magnetic leakage is reduced, the target material utilization is improved, the chamber pollution and the equipment maintenance frequency are reduced, and finally the use cost is reduced.

The utility model discloses a magnet device for positioning a coating workpiece, which comprises a magnetic attraction piece and a protective shell sleeved on the magnetic attraction piece, the protective shell comprises an upper shell and a lower shell which are spliced with each other, and a first part and a second part which are overlapped with each other are arranged at opposite ends of the upper shell and the lower shell. The first part and the second part are connected through the limiting assembly, the protective shell is divided into an upper shell body and a lower shell body which are spliced in order to enable the magnetic attraction piece and the protective shell to be separated more conveniently in a non-use scene, and the opposite ends of the upper shell body and the lower shell body are connected through the first part and the second part in an overlapped mode. And the first part and the second part are connected through the limiting assembly, so that when an operator needs to take out the magnetic attraction piece in the protective shell, the magnetic attraction piece is exposed by separating the first part from the second part, and the operator can conveniently separate the magnetic attraction piece in the protective shell.

The invention relates to a method for producing value documents (1), such as banknotes, checks, credit cards or other payment cards, identity cards or the like. A substrate body (2) having a front side (3) and a rear side (4) is provided, and a printing layer (6) is printed onto the front side (3) of the substrate body (2) using a first ink (5) and a second ink (15). The magnetically orientable pigment is orientated using a magnet device (11), and then the magnetically orientable pigment is fixed by a curing matrix in the orientated state using a curing device (13). At least the first ink (5) is printed in a digital printing process by means of a first print head (7) which releases the first ink (5) in a dot grid in the form of drops such that the printed layer (6) forms a digital printed layer at least with respect to the first ink (5), the first ink (5) and the second ink (15) having two different colors, and the magnetically orientable pigments each comprise a multi-layer composite structure comprising at least a magnetic layer.

The invention relates to a magnet device (11) for a magnetic resonance apparatus (10), the magnet device (11) comprising: a superconducting magnet (12); a discharge system (35); a switch (37) which is designed to interrupt a closed circuit in the superconducting magnet (12) and to transfer electrical energy which has accumulated in the superconducting magnet (12) to the discharge system (35); wherein the discharge system (35) comprises a supercapacitor (30) which is designed to buffer the electrical energy transport from the superconducting magnet (12) to the discharge element in the discharge system (35).

An electromagnet device includes a coil, a pulley, an iron core, a yoke, a movable iron piece, an auxiliary yoke, and a permanent magnet. The coil is wound around the pulley. The iron core is located inside the pulley. The yoke includes a base portion and an extension portion. The base portion extends in a direction intersecting an axial direction of the iron core and is fixed to one end of the iron core. The extension portion is connected to the base portion and arranged laterally relative to the coil. The movable iron piece is rotatably supported by the extension portion of the yoke. The auxiliary yoke is connected to an outer side of the base portion of the yoke. The permanent magnet is positioned on an extension line of the axis of the iron core and is located between the base portion of the yoke and the auxiliary yoke.

The invention relates to the technical field of high-pressure valves, in particular to a low-power-consumption bistable electromagnetic actuator for a valve, which comprises a casing main body for accommodating other parts of the electromagnetic actuator, introducing a control wire and allowing an output component to penetrate out; the stator assembly comprises annular coil devices which are symmetrically arranged in the axial direction and generate armature magnetic flux to control an output component to move transversely, and control wiring to control the time sequence of the armature magnetic flux generated by the coil devices. The middle iron core assembly comprises a permanent magnet device capable of generating permanent magnetic flux, and the permanent magnet device is located in the symmetrical middle of the symmetrically-arranged annular coil device and used for conducting electromagnetic fixing on the output component after transverse movement is finished. The armature assembly is used for driving the output component to retract into or penetrate out of the machine shell body under the action of armature magnetic flux to execute valve switch control action, and the armature assembly is arranged in the stator assembly and penetrates through the middle iron core assembly. According to the invention, a novel composite magnetic circuit under the dual action of a constant magnetic source and an electromagnetic field is constructed, so that bidirectional active switching between steady-state positions is realized.

The present invention relates to the technical field of surface strengthening of soft base materials, in particular to a high-density plasma uniform nitriding device and working method for the surface of soft base materials. The device includes 4 arc sources respectively arranged on the left side, right side, front side and rear side in the chamber. A permanent magnet device is arranged behind each of the arc sources. Each arc source is electrically connected to the negative pole of an arc source power supply, and the positive pole of the arc source power supply is grounded; it also includes 4 auxiliary anodes respectively arranged at the four corners in the chamber; an electromagnetic coil is arranged behind each auxiliary anode; each auxiliary anode is electrically connected to the positive pole of an auxiliary anode power supply through an adjustable resistor, and the negative pole of the auxiliary anode power supply is grounded.

A closure arrangement (1) comprises a first closure part (2), which has a first body (20), an engagement device (21), which is arranged on the first body (20), and a first magnet device (22), and also comprises a second closure part (3), which has a second body (30), a locking element (33) and a second magnet device (32). The first closure part (2) and the second closure part (3) can be placed against one another for the purpose of closing the closure arrangement (1) and, in a closed position, are held against one another by the locking element (33) engaging with the engagement device (21). The second closure part (3) has a connecting element (31), which is movably arranged on the second body (30) and on which the locking element (33) is arranged, wherein the connecting element (31) has at least one bearing portion (330), which is mounted on the second body (30) such that, when the first closure part (2) and the second closure part (3) are placed against one another for the purpose of closing the closure arrangement (1), the connecting element (31) can be moved on the second body (30), and the connecting element (31) can additionally be pivoted relative to the second body (30) in order to disengage the locking element (33) from the engagement device (21) for the purpose of opening the closure arrangement (1).

A vacuum pump 10, such as a turbomolecular pump, comprises a rotor 12 in a housing 26 and comprising a rotor shaft 32. A stator 14 in the housing cooperatives with the rotor. A magnet device 16 acts o

An electromagnet device includes a coil, a spool, a first coil terminal, a second coil terminal, and a third coil terminal. The spool includes a body portion around which the coil is wound, and a flange portion. The first coil terminal includes a first tying portion extending from the flange portion in an axial direction of the body portion. The second coil terminal includes a second tying portion extending from the flange portion in the axial direction. The third coil terminal is disposed between the first and second coil terminals and includes a third tying portion including a base end portion and a distal portion extending from the base end portion in a direction approaching the second tying portion. The base end portion is disposed eccentrically relative to an axis of the body end portion in a direction from the second coil terminal toward the first coil terminal.

The invention discloses a blood cell separation magnet device and method, and belongs to the technical field of cell separation. The magnet device comprises a plurality of pole heads which are symmetrically arranged, and runway coils are arranged outside the pole heads; the central axis position of a gap defined by the runway coils is a working area, the working area is a uniform magnetic field capturing area, and magnetized target cells in blood cells are stably separated by using a uniform magnetic field; the width of the working area ranges from 8 mm to 15 mm, and the length of the working area ranges from 200 mm to 500 mm. Through cooperation of the runway coil and the pole head, a linear or planar working area which is small in space body, high in strength, large in gradient and uniform in magnetic field distribution is formed, and compared with an existing point-shaped or small-area high gradient, magnetized cells flowing through a sample in the area can be captured more efficiently and more thoroughly, and the recovery rate and the purity are remarkably improved.

The utility model discloses a magnet device for magnetron sputtering coating, which belongs to the technical field of magnetron sputtering coating, and comprises a back plate, a magnetic bar base and magnetic bars, the magnetic bar base is connected onto the back plate through a plurality of adjusting bolts, the magnetic bar base is provided with three horizontal clamping grooves for correspondingly placing the magnetic bars, the magnetic bars comprise square tubes, and the square tubes are arranged in the clamping grooves. The magnets are arranged in the square tubes, and the magnetic poles of the magnets arranged in the adjacent square tubes face opposite directions. A fixing position is provided through the effect of the back plate, the generated peripheral magnetic field intensity is changed by adjusting the distance between the magnetic rod base and the back plate, the collision ionization effect is changed, the thickness of the film layer is adjusted accordingly, and the production application range is wide; the magnet device adopts the stainless steel square tube to package the magnet, effectively prevents the magnet assembly from being damped and corroded, ensures the position stability of the magnet, avoids the influence of position change on the magnetic field effect, and improves the stability and reliability of the device; and the magnet is convenient to disassemble and assemble and can be reused, so that the production cost is reduced.

A switchable magnet device and system, comprising a housing and a switchable magnet device, the switchable magnet device comprising at least one magnet stack (4) which can be switched between an active position, in which the magnet stack (4) is magnetically functionally connected to a formwork support, preferably to a magnetizable formwork support, preferably by contact with the formwork support, and a release position, in which the magnetically functional connection between the formwork support and the magnet stack (4) is reduced, preferably cancelled. In order to easily lift the magnet device, the magnet device further comprises a fluid-driven energy transmission mechanism (5) which is coupled to the at least one magnet stack (4) to transmit a force to the at least one magnet stack (4) to at least partially transfer the at least one magnet stack (4) from the active position to the release position.

The invention relates to the technical field of hoisting, in particular to an automatic steel rail positioning, sucking and hoisting device which comprises a hoisting beam and a hoisting permanent magnet device, the hoisting permanent magnet device is fixed to the hoisting beam through a connecting pin shaft, four magnetic shafts are arranged in the hoisting permanent magnet device side by side, and an adjustable positioning cone is installed at the bottom of a magnetic area of the hoisting permanent magnet device. According to the automatic steel rail positioning and sucking-lifting device, the lifting permanent magnet is used for sucking and lifting a steel rail, the surface of the steel rail is directly attracted through magnetic force, physical contact is not needed, and the slipping hidden danger is avoided; through quick suction and release, the clamp does not need to be manually adjusted by workers, the suction operation can be completed through remote control, and the manpower demand is reduced; the adjustable positioning cone is installed at the bottom of the magnetic area of the lifting permanent magnet device, steel rails of different specifications can be compatible, and clamp parts do not need to be replaced. And compared with a traditional electromagnet, more energy is saved, and the maintenance cost is lower.

The invention provides a point contact measuring rod adaptive to a water-cooled magnet, and relates to the technical field of low-temperature measurement. The point contact measuring rod adapted to the water-cooled magnet comprises a measuring head provided with a driving assembly, and the driving assembly is used for driving a sample to be measured and / or a probe to move at least in a three-dimensional space. The point contact measuring rod can be matched with a water-cooled magnet device to measure the superconducting energy gap of a superconducting material, the contact position between the tip of the metal probe and a sample can be changed through movement of the driving assembly, measurement of multiple positions of the same sample can be achieved without frequent insertion and extraction of the measuring rod, and the problems that the probe insertion distance is uncontrollable, and the measurement accuracy is high are solved. Tunnel junction control is unstable, and single measurement contact position is single.

Embodiments disclosed in the specification and drawings relate to a superconducting magnet device and a magnetic resonance imaging device. One of the issues to be solved by the embodiment is to efficiently cool a plurality of structures to be cooled while reducing the amount of refrigerant. A superconducting magnet device according to an embodiment includes a superconducting coil, a structure, a refrigerant tank, a heat exchanger, a refrigerator, a solid heat conductor, and a vacuum container. The superconducting coil is composed of a superconducting wire forming a magnetic field. The structure is composed of a superconductor and is electrically connected to the superconducting coil. The refrigerant tank stores a refrigerant. The heat exchanger is exposed to the inside of the refrigerant tank. And the refrigerating machine is used for cooling the refrigerant. The solid heat conductor connects the refrigerant tank with the superconducting coil and the structure directly or indirectly in a heat-conducting manner. The superconducting coil or the structure is configured using at least two structures having different operating temperatures or superconducting characteristics as superconductors.