8 results about "Axial current" patented technology

The present invention discloses a highly conductive split ring of an omnidirectional elastic member. The highly conductive split ring of an omnidirectional elastic member according to the present invention solves the problem of corrosion of peripheral components caused by axial current in high-speed electric motors, which directly affects the operating stability of bearings mounted on the main shaft, thereby affecting the stability of the electric motor under conditions of high rotational speed, high power, and high torque. It also overcomes the state-of-the-art technical challenge of limiting the output of the electric motor, which belongs to the problem of axial current that needs to be resolved quickly, otherwise it may cause a potential safety hazard. The multiple fan-shaped lip edges used in the present invention not only ensure good electrical contact and sufficient contact area with the main shaft, but also move synchronously with the radial or axial movement of the main shaft, demonstrating excellent performance in following the main shaft operation and ensuring good instantaneous electrical contact between the conductive silicone adhesive and the main shaft. [Solution] The split ring comprises an outer frame, a support ring, and a conductive assembly, and the conductive assembly includes a conductive ring, multiple lip edges, a conductive silicone adhesive after it has solidified from a liquid state, and a conductive elastic member that is integrally attached to the conductive silicone adhesive.

This invention discloses a method, system, and storage medium for calculating the self-torque of a bitter coil, relating to the field of water-cooled magnet technology. The method includes obtaining the basic parameters of each coil in a water-cooled magnet; dividing the conductors in the upper or lower half of the coil into several annular grids; determining the coordinates of the grid center points based on the basic parameters; calculating the total radial magnetic field component at each grid center point; using the integral of the current density distribution of each grid over the single-turn cross-sectional area of ​​the coil, which equals the target current flowing through the coil, to solve for the current density distribution at each grid location; calculating the helix angle sine of the current helix path within the grid based on the helix path plane of the grid; calculating the axial current density component of each grid based on the current density distribution at each grid location and the corresponding helix angle sine; and calculating the electromagnetic torque of the coil when the target current flows through it based on the total radial magnetic field component and the axial current density component of each grid.

The invention discloses a burnt rock aquifer grouting diffusion monitoring method based on transient electromagnetism, and relates to the technical field of diffusion monitoring, and the method comprises the steps: generating normalization signals of a columnar alteration pipeline and a grouting area based on an original transient electromagnetic induction curve of a target monitoring area; performing axisymmetric interference elimination on the normalized signal by using the axial spacing of the spiral receiving coils to obtain the axial differential gradient of the grouting area; performing axial current saturation and decoupling on the axial differential gradient based on the saturation current of the columnar alteration pipeline to obtain a saturation compensation signal; converting the saturation compensation signal into a ring halo contrast index, and carrying out matrix processing on the ring halo contrast index to obtain a two-dimensional matrix; and performing threshold discrimination on the first-order time derivative of each row in the two-dimensional matrix to obtain a slurry front edge arrival time, and performing spatial interpolation on the slurry front edge arrival time to obtain a front edge isochronous plane of the target monitoring area. The accuracy of grouting identification can be improved.

The present application relates to a kind of high-speed moving conductive object magnetic rotation method and device, utilize space cross magnetic field or multi-angle cross magnetic field, axial current is induced on the surface of conductive object, axial current is acted on by magnetic field force in cross magnetic field, and torque is generated to conductive object, so as to rotate along its own axis to conductive object.Cruciform cross magnetic field can be with magnetic field or electric field, high-speed moving conductive object can be single material or composite material, can be all conductor or partially have conductivity.The present application has the characteristics of high adaptability, long life, fast rotation and safe and reliable.

The application discloses a Bitter coil self-torque calculation method and system and a storage medium, relates to the technical field of water-cooled magnets, and comprises the following steps: acquiring basic parameters of each coil of a water-cooled magnet, dividing conductors in the upper half coil or the lower half coil of the coil into a plurality of annular grids, and determining grid center point coordinates based on the basic parameters; calculating total radial magnetic field components of each grid center point; utilizing integral results of current density distribution of each grid on a single-turn cross-sectional area of the coil being equal to a target current passing through the coil to solve current density distribution at positions of each grid; calculating a helical angle sine value of a helical path of a current in the grid according to a helical path plane of the grid; calculating axial current density components of each grid according to the current density distribution at the positions of each grid and the corresponding helical angle sine value; and calculating electromagnetic torque when the target current passes through the coil according to the total radial magnetic field components and the axial current density components of each grid.

Provided is a mounting structure of a shaft ground ring of a motor in which a second contact part of the ground ring is inserted into a hole positioned in a rotating shaft, thus making the ground ring be in contact with an inner circumferential surface of the rotating shaft to transfer an axial current occurring in a rotor to a motor housing.

In order to improve the energy efficiency, the rotating speed and the power-to-weight ratio of the motor, according to the magnetic point theory, a magnetic point resonates with a variable electromagnetic field in a three-dimensional space defined by a closed electromagnetic field lead coil, a whole magnetic rotor is sleeved with a rectangular axial lead frame winding, and the magnetic point and the variable electromagnetic field are connected through an electronic commutator, so that the energy efficiency, the rotating speed and the power-to-weight ratio of the motor are improved. The magnetic point motor does circumferential resonance motion and is continuously unchanged in the rotation direction, so that brushless, coreless, large torsion, high rotation speed and high energy efficiency are realized. Comprising a radial magnetic rotor, a machine shell, an axial lead frame and a bearing, the machine shell is a fixing piece for supporting the axial lead frame and the radial magnetic rotor, the radial magnet is sleeved with the axial lead frame, the radial magnet relatively rotates in the axial lead frame, and current is controlled by a motor controller to generate current. The current switch of the axial lead frame changes along with the rotation of the magnetic field to a certain position, and the axial current direction corresponding to the magnetic field direction of the radial magnet is always kept unchanged.

The application discloses a kind of power grid to buried pipe network's electromagnetic interference calculation method, comprising the following steps: conductor is divided into a conductor microsection, conductor microsection outer surface two end potential difference is equal to the potential difference of conductor microsection inside, according to this continuity feature equation group is established, according to leakage current the potential difference of conductor microsection outer surface two ends is solved, the impedance of conductor microsection itself and the product of axial current are then solved the potential difference of conductor microsection inside two ends;According to Kirchhoff's law, the relationship between axial current and leakage current on each conductor microsection is obtained, a set of linear algebraic equations is established, and the leakage current distribution on the conductor is obtained by solving the linear algebraic equations.The results of the application are used to evaluate the influence of electromagnetic interference on buried pipe network, so as to control the risk in advance and realize the harmonious coexistence of power grid and oil and gas pipeline network.