16 results about "Flux lines" patented technology

A device for implementing a non-reciprocal bandpass filter is provided. The device includes a plurality of capacitively-coupled shunt resonators. Each capacitively-coupled shunt resonators includes a plurality of superconducting quantum interference devices (SQUIDs) connected to each other, a flux line inductively coupled to the plurality of SQUIDs, and a capacitor connected in parallel to the plurality of SQUIDs.

The present application relates to a kind of stator profiled mixed lamination structure and motor thereof, including by the first stator sheet of multiple pieces Axially laminated and formed radial lamination group, the radial lamination group is annular, the radial lamination group includes multiple stator teeth and the stator yoke at the tail of the stator tooth, further including by the second stator sheet of multiple pieces Radially laminated and formed axial lamination group, the middle part of the stator yoke is provided with slot, the axial lamination group is inserted into the slot, the second stator sheet is perpendicular to the first stator sheet, the axial lamination group is formed in radial along the limit of the magnetic flux line from circumferential to radial Staircase shape.The axial lamination group is formed in radial along the limit of the magnetic flux line from circumferential to radial in the present application Staircase shape, modulates the magnetic force line distribution of leakage magnetic region, to enhance the salient pole effect of stator, enlarge the weak magnetic region of motor and promote the highest speed.

An ultrasonic probe, including an ultrasonic transducer; a metal inner housing that is thermally connected to the ultrasonic transducer; and a magnetic flux line generator disposed at a position at least partially surrounded by the inner housing and having a first pole and a second pole, wherein the inner housing comprises a magnetic flux line-passing structure that allows passage of magnetic flux lines from the first pole back to the second pole.

The invention relates to a stator special-shaped hybrid lamination structure and a motor thereof, the stator special-shaped hybrid lamination structure comprises a radial lamination group formed by axially laminating a plurality of first stator steel sheets, the radial lamination group is annular, and the radial lamination group comprises a plurality of stator teeth and stator yokes located at the tails of the stator teeth; the axial lamination group is formed by laminating a plurality of second stator steel sheets along the radial direction, a slot is formed in the middle of the stator yoke, the axial lamination group is inserted into the slot, the second stator steel sheets are perpendicular to the first stator steel sheets, and the second stator steel sheets are perpendicular to the first stator steel sheets. And the axial lamination group turns along the boundary of the magnetic flux line from the circumferential direction to the radial direction to form a step shape. The axial lamination group turns along the boundary of the magnetic flux line from the circumferential direction to the radial direction to form a step shape, and the magnetic line distribution of the magnetic leakage area is modulated, so that the stator salient pole effect is enhanced, the weak magnetic area of the motor is expanded, and the maximum rotating speed is increased.

The application discloses a kind of background field wide-range adjustable ultra-low field nuclear magnetic resonance measuring device, and a kind of background field wide-range adjustable ultra-low field nuclear magnetic resonance measuring method is also disclosed, the present application adopts flat solenoid to realize high background magnetic field requirement and ultra-low ambient magnetic field, flat solenoid can also accommodate more coil and obtain more turns, realize more extensive background field adjustable range;Flat solenoid both ends are stretched outside magnetic shielding module, which can ensure that the magnetic flux line at the end of flat solenoid is connected outside the shielding area, eliminating the problem of background field inhomogeneity generated by ordinary solenoid coil;The present application can eliminate the interference of ambient magnetic field by passive magnetic shielding and active magnetic field compensation, first, the ambient magnetic field is shielded by multiple electromagnetic shielding cylinders, and then the magnetic field opposite to the ambient magnetic field is generated by the shim coil to actively compensate the magnetic field, to offset the interference of ambient magnetic field;The shim coil can also improve the uniformity of the central magnetic field.

This utility model relates to the field of electrical engineering technology and discloses a zero-flux current transformer, including a housing, an insulating bushing, a base, and a transformer body. The transformer body is vertically mounted inside the housing, and a primary conductor is installed inside to carry high-voltage direct current. A zero-flux coil is installed at the upper end of the transformer body to sense the magnetic field generated by the current in the primary conductor and output a secondary current. The zero-flux coil is located inside a shield and grounded to improve measurement accuracy and stability. The transformer is filled with SF6 gas for electrical insulation, and a silicone rubber coating is provided on the outside of the zero-flux coil as a buffer layer to protect the coil from the influence of internal gas pressure. The transformer body is connected in series in a DC circuit system through the primary conductor, and the secondary current is introduced into the zero-flux electronic module via a cable to output a secondary signal. This utility model improves the measurement accuracy and stability of the current transformer, enhances safety and reliability, and is suitable for high-voltage direct current environments.

The invention provides a magnetic flux wrench which comprises an outer shell, a circuit board, a sleeve, a first magnetic sheet, a second magnetic sheet and a magnetic flux coil. The circuit board is arranged in the outer shell; the sleeve comprises a sleeve body, one end of the sleeve is electrically connected with the circuit board, and the other end of the sleeve is partially exposed out of the outer shell. The first magnetic sheet has different positive and negative poles and sleeves the peripheral surface of the sleeve body; the second magnetic sheet has different positive and negative poles and sleeves the peripheral surface of the first magnetic sheet; the magnetic flux coil is arranged between the first magnetic sheet and the second magnetic sheet and controlled by the circuit board, and the magnetic flux coil can drive the first magnetic sheet to rotate relative to the second magnetic sheet after being electrified so as to drive the sleeve body to rotate forwards or backwards. According to the invention, a user can construct in a narrow or compact extreme environment, and the device has the advantages of light weight, miniaturization and convenience in operation, is suitable for construction of electronic elements in precise electronic products, and has the advantages of time saving, labor saving and labor and time cost saving during operation.

The utility model relates to the technical field of electric appliance engineering, and provides a 35kV cage-type structure high-throughput line arrester, which comprises a plurality of first through holes distributed at intervals along the axis direction of an insulating cylinder, the two end plugging blocks are arranged at the two ends of the insulating cylinder respectively, and the two end plugging blocks and the insulating cylinder form a cage type space. The resistor piece is arranged in the cage type space, the two ends of the resistor piece are electrically connected with the two end plug blocks respectively, a gap is formed between the resistor piece and the inner wall of the insulating cylinder, and the gap and the first through hole are filled with silicon rubber. According to the technical scheme, the problem of poor voltage release performance of the lightning arrester in the prior art is solved.

Solenoid valve (900) comprising a valve body (1) in which pneumatic connections and a valve seat are obtained, the latter alternately putting in fluidic communication at least two of said pneumatic connections, and a driving assembly operatively connected to the valve body (1). The driving assembly comprises a coil (20) for generating a magnetic field, identifying a central seat coaxial with a coil axis. Moreover, the driving assembly comprises a movable core (22), arranged coaxially to the coil (20) and axially translatable between a first closing position of the valve seat and a second opening position of the valve seat, and a fixed core (24), also arranged coaxially to the coil (20). The driving assembly further comprises an armature made of ferromagnetic material and magnetically coupled to the coil (20) so as to close the lines of force of the magnetic field generated by the coil (20). The armature comprises a head portion (260) extending in a direction substantially transverse to the coil axis, a side portion (262) extending in a direction substantially parallel to the coil axis, and a base portion (264) extending in a direction substantially transverse to the coil axis opposite to the head portion (260), wherein an axial through opening is obtained in the base portion (264), in which the movable core (22) is partially housed and sliding. The driving assembly comprises a polar expansion (266) surrounding the movable core (22) so as to increase the interface surface between the movable core (22) and the flux lines of the magnetic field, wherein the polar expansion (266) is made in one piece in a single body with the base portion (264) of the armature.

A vibration generating device includes: a stationary body; a movable body housed in the stationary body; a guide member configured to guide the movable body so that the movable body is reciprocally movable in the stationary body along a left-and-right direction; a magnetic flux-generating member fixed to the movable body and configured to generate a magnetic flux along an up-and-down direction; a coil fixed to the stationary body to cross the magnetic flux and includes electrically conductive wires extending along a front-and-back direction and being juxtaposed along the left-and-right direction; and a magnetic member fixed to the stationary body and disposed at an outer side of the coil. The magnetic member is disposed to generate an attractive force to attract the movable body located at a position off a center of a movable range of the movable body, to the center of the movable range of the movable body.

A magnetic induction furnace configured to heat solid or tubular metal billets, of various lengths and diameters, made of non-ferrous materials. The furnace includes a fixed body in which there is arranged an electric motor having an annular rotor rotatably disposed in a stator. The annular rotor is joined to a rotor body carrying a plurality of permanent magnets arranged so as to define a hollow magnetic cylinderhaving a cavity configured to contain a non-rotating billet to be heated. The permanent magnets of the rotor body comprise main permanent magnets magnetized in the radial direction with respect to such rotor body and auxiliary permanent magnets magnetized in the axial direction. The permanent magnets generate flux lines of a magnetic field directed inwardly, towards an interior of the cavity configured to contain the billet so as to improve the heating thereof.

Base components are placed into recesses of a holder. Each recess includes a flat bottom surface parallel to a horizontal direction. A lid is placed above the holder at a predetermined distance from the bottom surface. A magnetic field with a magnetic flux line intersecting perpendicularly with the bottom surface is caused to act on the base components in the recesses to rotate the base components about their longitudinal axes to have internal electrode layers parallel to the magnetic flux line.

A zero-flux coil on-off detection device disclosed by the present invention comprises an excitation power supply module, a transmitting coil, a receiving coil and a signal processing module, the excitation power supply module is electrically connected with the transmitting coil, and the excitation power supply module is used for providing a stable current for the transmitting coil, so that the transmitting coil generates a magnetic field; the transmitting coil is arranged on one side of the track and is parallel to the zero-flux coil, the signal processing module is electrically connected with the receiving coil, the receiving coil is arranged on the other side of the track and is parallel to the zero-flux coil connected with the transmitting coil side through a hinge line, and the signal processing module is used for detecting whether the transmitting coil and the receiving coil move synchronously or not when the transmitting coil and the receiving coil move synchronously. And receiving the output voltage of the coil. According to the invention, the on-off detection of the zero-flux coil can be realized, and serious consequences caused by the disconnection fault of the zero-flux coil can be effectively prevented.

The invention discloses a novel zero-flux coil and a design method thereof, relates to the technical field of transient electromagnetic exploration, and solves the problem that primary field interference is difficult to eliminate in the prior art. The novel zero-flux coil and the preparation method thereof, the parameter optimization method and the signal acquisition method have the remarkable technical advantages that firstly, almost complete shielding of a primary field is achieved through special structure configuration of the inner and outer double receiving coils and accurate turn ratio calculation; secondly, determining a d = 0 plane configuration through a parameter optimization method, and enabling a longitudinal stability coefficient to be far higher than that of an existing structure; thirdly, signal oscillation caused by asymmetry of factor coil parameters is effectively eliminated through a double-damping method; and finally, through a specific signal acquisition method, secondary field signals are superposed while the primary field is suppressed, and the detection sensitivity is obviously superior to that in the prior art.

The invention provides a square IGBT current distribution evaluation method and system based on a surface-mounted magnetic flux coil. The method comprises the steps that a plurality of surface-mounted magnetic flux coils are tightly attached to the surface of a shell of a square IGBT device, so that a coupling alternating magnetic field is generated between the surface-mounted magnetic flux coils and the square IGBT device, and the surface-mounted magnetic flux coils output induced voltage; measuring the induced voltage of each surface-mounted magnetic flux coil, and calculating a real-time mutual inductance value between each surface-mounted magnetic flux coil and the internal current of the square IGBT according to the induced voltage; based on the variable quantity of the real-time mutual inductance value, offset vectors corresponding to the surface-mounted magnetic flux coils are calculated, and the offset vectors are used for representing the spatial position change of the current concentration point relative to the normal direction of the surface-mounted magnetic flux coils; and superposing the offset vectors corresponding to the surface-mounted magnetic flux coils to obtain a composite vector, and evaluating the current distribution state in the square IGBT according to the composite vector.

A non-linear superconducting quantum circuit having a first mode and a second mode is disclosed, wherein the first and second modes have respective resonant frequencies. The circuit is configured such that the resonant frequency of the second mode is substantially 2N times the resonant frequency of the first mode when a predetermined current of a constant intensity is applied to the circuit. The circuit intrinsically performs a resonant 2N-to-1 photon exchange between the first and second modes, with N being a positive integer, and thus improving the circuit. When this circuit receives a predetermined current and when the second mode is driven appropriately, the circuit can stabilize a cat-qubit. In a symmetrical version of this circuit, a flux line has been developed to allow RF coupling to the second mode and not to the first mode, allowing the stabilization to be turned off and quantum measurements to be performed.