60 results about "Axial field" patented technology

A system has an axial field rotary energy device with an axis, a printed circuit board (PCB) stator and a rotor with a rotor shaft and rotor disks having respective permanent magnets (PM). The rotor rotates about the axis relative to the PCB stator. A variable frequency drive (VFD) has VFD components coupled to the axial field rotary energy device. A device enclosure contains the axial field rotary energy device. A VFD enclosure contains the VFD, and the device and VFD enclosures are axially aligned and coupled to each other. A cooling system is integrated within the device and VFD enclosures and cools the axial field rotary energy device and the VFD. The cooling system has a cooling fan located axially outboard of the device and VFD enclosures. The cooling fan circulates an air flow radially and axially relative to the device and VFD enclosures.

A system has an axial field rotary energy device with a housing, an axis and a rotor with a shaft, bearings, rotor disks and permanent magnets. A printed circuit board (PCB) stator is between the rotor disks to define an air gap on each side thereof. A variable frequency drive (VFD) assembly has a VFD housing and first pads coupled to inductors to facilitate heat removal from the inductors. A concave cradle is coupled to a ferromagnetic core and has a same contour as an outer surface of the ferromagnetic core. A second pad is coupled to a rectifier module. A third pad is coupled to switching devices and has pins to align the switching devices with the third pad. Standoffs are coupled to the VFD housing to support a first printed circuit board assembly (PCBA). A second PCBA is mounted to a shield plate above the first PCBA.

The invention belongs to the field of insulator detection, and particularly relates to a porcelain insulator degradation detection method based on a photoelectric field sensing technology, which comprises the following steps: carrying out analogue simulation on a 35kV-500kV line porcelain insulator string through COMSOL, and establishing models by analogue simulation including a non-degradation model and a degradation model; the live detection of the porcelain insulator string is realized, firstly, the porcelain insulator string is simulated under two conditions of non-degradation and degradation, field intensity change reference thresholds of a high section, a middle section and a low section of the porcelain insulator string are confirmed, and during detection, a broadband electric field sensor based on a Pockels electro-optical effect is used for detecting the field intensity change reference thresholds of the high section, the middle section and the low section of the porcelain insulator string. Each insulator, between the high-voltage end and the low-voltage end, of the to-be-detected porcelain insulator string in the axial direction is detected, the detected field intensity data generates an axial field intensity distribution curve through the pre-simulated reference curvature, the fault position is visually displayed and the fault piece is confirmed in a curve comparison mode, and the detection accuracy is improved in a segmented comparison mode.

An axial field rotary energy device or system includes an axis, a PCB stator and rotors having respective permanent magnets. The rotors rotate about the axis relative to the PCB stator. A variable frequency drive (VFD) having VFD components are coupled to the axial field rotary energy device. An enclosure contains the axial field rotary energy device and the VFD, such that the axial field rotary device and the VFD are integrated together within the enclosure. In addition, a cooling system is integrated with the enclosure to cool the axial field rotary energy device and the VFD.

A system can include an axial field rotary energy device with an axis of rotation and a rotor coaxial with the axis and having a shaft, bearings, rotor disks that are coaxial and permanent magnets on each rotor disk. A printed circuit board (PCB) stator is located between the rotor disks to define an air gap on each side of the PCB stator. An enclosure has two enclosure sections with an inspection port. Bearing caps and bearings are mounted to the rotor. A variable frequency drive (VFD) assembly is coupled to the axial field rotary energy device. The VFD has a flexible conduit that extends between the VFD housing and the axial field rotary energy device. The flexible conduit can adapt to different sizes of axial field rotary energy devices.

The application discloses a kind of stator assembly and axial magnetic field motor, the stator assembly includes stator shell, stator core, coil, pole shoe and stator cover plate, stator core, coil and pole shoe are arranged in the space formed by stator shell and stator cover plate;Coil is arranged in the opening slot of stator core;Pole shoe is fixed on stator cover plate, when stator cover plate and stator shell butt joint, pole shoe can be arranged at the slot opening of opening slot.The stator core in the application has opening slot, which facilitates the installation of the coil, at the same time, the pole shoe is fixed on the stator cover plate, when the stator cover plate and the stator shell butt joint, the pole shoe corresponding to the slot opening of the opening slot can reduce the tooth harmonic of the motor, reduce the iron loss of the motor, improve the efficiency of the motor, and reduce the torque ripple of the motor. Since the pole shoe is carried on the stator cover plate, during assembly, after directly butt jointing the stator cover plate and the stator shell, the pole shoe can be matched with the opening slot, thereby improving the production efficiency of the motor.

The invention provides a drift tube linear accelerator on-line frequency compensation method, which comprises the following steps: firstly, constructing an initial cavity three-dimensional simulation model, judging the flatness of an axial field through calculation, and adjusting the angle of an eccentric sheet if the flatness does not reach the standard; calculating the stability of the electric field, and adjusting the length of the coupling rod if the electric field does not reach the standard; the field flatness is judged again after stability tuning, and the angle of the eccentric piece is adjusted if the field flatness does not reach the standard; a tuning block is added according to an opening of the cavity, wherein the tuning block comprises a new pickup port tuner, and a vacuum pump mesh, a fixed tuner and a rod coupler are improved; after a tuning block is added, frequency, axial field flatness and stability calculation is carried out, if the three indexes all meet requirements, compensation is ended, and otherwise, it is considered that compensation cannot be carried out; according to the method, a frequency compensation scheme can be simulated and determined, so that the field flatness and stability meet the operation requirements, and a cold test system is prevented from being rebuilt in a tunnel for field adjustment.

The application provides an axial magnetic field motor stator, a cooling structure and a manufacturing method thereof. The cooling structure comprises a stator shell, the stator shell comprises an upper metal plate, an intermediate partition plate and a lower metal plate which are spliced along an axial direction, a plurality of core mounting holes are arranged on the stator shell in a circumferential direction, each core mounting hole penetrates the upper metal plate, the intermediate partition plate and the lower metal plate in sequence, a yokeless core is mounted in the core mounting hole and exposes two ends on both sides of the stator shell, a coil is sleeved on the yokeless core, the coil is sleeved on both ends of the yokeless core which are exposed on both sides of the stator shell, an upper flow channel is arranged on a splicing surface of the upper metal plate and the intermediate partition plate, a lower flow channel is arranged on a splicing surface of the lower metal plate and the intermediate partition plate, and an intermediate hole is arranged on the intermediate partition plate and communicates the upper flow channel and the lower flow channel. The method does not occupy the circumferential space of the coil, improves the coil slot fill rate, simultaneously reduces the forming difficulty and realizes the manufacturability.

The application discloses a PET system correction method and device, a storage medium and computer equipment, relates to the medical image technical field, and mainly can reduce the efficiency correction cost of the PET system detector, and simultaneously reduces the efficiency correction difficulty of the PET system detector. The method comprises the following steps: acquiring single photon counting values collected by each detector in a PET system, wherein the single photon counting value is the number of single photons generated by a radioactive source phantom and collected by each detector in the process that the radioactive source phantom moves along the axial direction of the PET system, and the length of the radioactive source phantom is less than the axial field of view length of the PET system; calculating efficiency correction coefficients of each detector based on the single photon counting values collected by each detector; and determining efficiency correction coefficients of corresponding original coincidence event data of the PET system according to the efficiency correction coefficients of each detector, wherein the efficiency correction coefficients of the original coincidence event data are used for correcting the detection efficiency of the PET system.

The application provides an axial magnetic field motor stator, a cooling structure and a manufacturing method thereof. The cooling structure comprises a stator shell, the stator shell comprises an upper metal plate, an intermediate partition plate and a lower metal plate which are spliced along an axial direction, a plurality of core mounting holes are arranged on the stator shell in a circumferential direction, each core mounting hole penetrates the upper metal plate, the intermediate partition plate and the lower metal plate in sequence, a yokeless core is mounted in the core mounting hole and exposes two ends on both sides of the stator shell, a coil is sleeved on the yokeless core, the yokeless core exposes two ends on both sides of the stator shell, and the coil is sleeved on the two ends, an upper flow channel is arranged on a splicing surface of the upper metal plate and the intermediate partition plate, a lower flow channel is arranged on a splicing surface of the lower metal plate and the intermediate partition plate, and an intermediate hole is arranged on the intermediate partition plate and communicates the upper flow channel and the lower flow channel. The coil circumferential space is not occupied, the coil slot filling rate is improved, the forming difficulty is reduced, and the manufacturability is realized.

The application provides an axial magnetic field motor and a stator cooling structure. The stator cooling structure comprises an outer ring oil gap of an iron core, an inner ring oil path, a plurality of inter-winding inward oil paths, a spray ring oil outlet, a plurality of inter-winding outward oil paths, a plurality of spray holes, a shell inlet, and a shell outlet. The outer ring oil gap of the iron core is located on a radial outer side of the inner ring oil path. The outer ring oil gap of the iron core and the inner ring oil path are connected. The spray ring oil outlet is located on a radial outer side of the inner ring oil path. The spray ring oil outlet and the inner ring oil path are connected. The spray ring oil outlet and the outer ring oil gap of the iron core are arranged in a circumferential direction. The spray ring oil path is located on a radial outer side of the outer ring oil gap of the iron core. The spray ring oil path and the outer ring oil gap of the iron core are connected through the plurality of spray holes. The spray ring oil path and the spray ring oil outlet are arranged in the circumferential direction. The shell inlet is connected to the spray ring oil path. The shell outlet is connected to the spray ring oil outlet. The flow direction of the cooling medium can cover all the iron core windings and can completely surround the outer periphery of each iron core winding. Space is reasonably utilized and the cooling capacity is effectively improved.

An axial field rotational energy device comprising: a rotor (33) comprising a rotation axis (35) and a magnet (37); a stator (141) that is coaxial to the rotor (33), wherein the stator (141) comprises a one-piece printed circuit board (PCB) (145) having a plurality of PCB layers (47), the PCB layers (47) forming layer pairs (57), the two PCB layers (47) of each layer pair (57) being electrically coupled to each other via vias (155, 159), and wherein the PCB layers (47) are spaced apart in the axial direction, each PCB layer (47) comprising a corresponding plurality of coplanar coils (149), each coil (149) having only two terminals (51, 53) for electrical connections, each coil (149) on a given PCB layer (47) being continuous and uninterrupted between its only two terminals (51, 53), each coil (149) on a given PCB layer (47) being completely unconnected overlaps other coils (149) on the given PCB layer (47), wherein two directly adjacent coils (149) of a given PCB layer (47) are not directly connected, but the adjacent coils (149) of each pair of adjacent coils (149) on the given PCB layer (47) are coupled to each other by a coil (149) on a PCB layer (47), such that a current flowing through a given coil (149) on a given PCB layer (47) flows through a coil (149) on another PCB layer (47) before flowing through an adjacent coil (149) on the given PCB layer (47), wherein a current which flows spirally around a first coil (149) on a given PCB layer (47) also flows spirally around a second coil (149) adjacent to the first coil (149), wherein each coil (149) has a first terminal (51) at an outer edge of the coil (149) and a second terminal (53) in the center of the coil (149), wherein a first via (55.1) couples the second terminal (53) of a first coil (49.11) of a first PCB layer (47.1) of a layer pair (57.1) with a second terminal (53) of a second coil (49.21) of a second PCB layer (47.2) of the layer pair (57.1), and wherein a second via (55.2) couples the first terminal (51) of the second coil (49.21) of the second PCB layer (47.2) of the layer pair (57.1) with a first terminal (51) of a coil (49.12) of the first PCB layer (47.1) adjacent to the first coil.

An integral motor pump (IMP) or integral motor turbine (IMT) includes an axial field permanent magnet synchronous motor (PMSM) having a stator that is sealed by a disk-shaped non-conducting stator cover axially interposed between the stator and PMSM impeller, such that eddy currents are not generated in the stator cover by the rotating permanent magnets of the impeller. The stator cover can be annular, and can be fixed directly to the stator housing, or pressed against the stator housing by brackets. The seal can be formed by an adhesive, and / or by at least one gasket. Either the stator cover or the brackets can include flanges extending axially proximate the stator housing, and attached to the stator housing by any combination of an interference fit, an adhesive, set screws, or a protrusion extending into an indentation. In embodiments, the bracket flanges are welded to the stator housing.

An axial field rotary energy device can include a housing and a rotor rotatably coupled to the housing. The rotor can have an axis of rotation and magnets. A stator assembly can be coupled to the hous

The present disclosure relates to a system for imaging. The system may include a supporting assembly and a detector assembly. The supporting assembly may include a detection region to accommodate a subject. The detector assembly may surround the detection region. The detector assembly may be configured to detect radiation rays emitted from the subject located within the detection region. The detector assembly may include a plurality of detector rings. Each detector ring may include a scintillator array and a plurality of photosensors. The plurality of detector rings may be arranged on the supporting assembly in an axial direction of the supporting assembly to form an axial field of view (FOV) having a length no less than 0.75 meters.

The application discloses an axial magnetic field motor and a cooling flow channel structure thereof. The cooling flow channel structure is used for the axial magnetic field motor, the axial magnetic field motor comprises a shell and a stator core arranged in the shell, the cooling flow channel structure is surrounded by the shell and the stator core of the axial magnetic field motor, an installation surface of the shell for installing the stator core is provided with an open slot, the stator core is provided with an inlet and an outlet communicated with the open slot, so that the cooling liquid can enter and exit the cooling flow channel; the stator core is sealingly connected with the shell to cover the open slot and form the cooling flow channel structure; the cooling flow channel structure is surrounded by the stator core and the shell, only the open slot needs to be arranged on the shell, therefore, a forming sand core does not need to be manufactured and used in the process of producing and manufacturing the shell, and the shell can be directly formed by pouring in a mold, so that the production process of the motor shell can be simplified, the production cost is reduced, the production efficiency is improved, the consistency of the shell produced in each batch can be ensured, and the yield is improved.

The present application relates to axial magnetic field motor, especially to a kind of axial magnetic field motor rotor structure, including rotor core;Several permanent magnets, several The permanent magnets are circumferentially spaced on the rotor core;Several pole shoe cores, pole shoe core includes surface layer body, inner edge body and outer edge body, inner edge body is connected to the radial inner side of surface layer body, outer edge body is connected to the radial outer side of surface layer body, and inner edge body and outer edge body are fixed on the rotor core;Each permanent magnet is respectively positioned and fixed on the rotor core by a pole shoe core, and the surface layer body is at least partially covered on the upper surface of the permanent magnet, so that the permanent magnet can be firmly between the rotor core and the pole shoe core, while improving the accuracy of the permanent magnet installation, ensuring the reliability and stability of motor operation.

An axial field rotary energy device can include a rotor comprising an axis of rotation and a magnet. In addition, a stator can be coaxial with the rotor. The stator can include a plurality of stator segments that are coupled together about the axis. Each stator segment can include a printed circuit board (PCB) having a PCB layer comprising a coil. Each stator segment also can include only one electrical phase. The stator itself can include one or more electrical phases.

An axial field rotary energy device 100 comprises rotors 110 having an axis of rotation (Fig.2, 120), each rotor comprises a magnet 130. A stator assembly 201 is located axially between the rotors and

An integral motor pump (IMP) or integral motor turbine (IMT) includes an axial field permanent magnet synchronous motor (PMSM) having a stator that is sealed by a disk-shaped non-conducting stator cover axially interposed between the stator and PMSM impeller, such that eddy currents are not generated in the stator cover by the rotating permanent magnets of the impeller. The stator cover can be annular, and can be fixed directly to the stator housing, or pressed against the stator housing by brackets. The seal can be formed by an adhesive, and / or by at least one gasket. Either the stator cover or the brackets can include flanges extending axially proximate the stator housing, and attached to the stator housing by any combination of an interference fit, an adhesive, set screws, or a protrusion extending into an indentation. In embodiments, the bracket flanges are welded to the stator housing.

Axial field rotational energy device comprising: a rotor (33) comprising a rotational axis (35) and a magnet (37); and a stator (141) which is coaxial to the rotor (33), wherein the stator (141) comprises a plurality of stator segments (142) which are coupled to each other around the axis, wherein each stator segment (142) comprises a printed circuit board, PCB, (145) with a plurality of PCB layers (47), wherein the PCB layers (47) form at least two layer pairs (57). wherein the two PCB layers (47) of each layer pair (57) are electrically coupled to each other via vias (155, 159) and wherein each PCB layer (47) comprises a plurality of coils (149) that are coplanar and angularly spaced from each other with respect to the axis of rotation (35), wherein each coil (149) is wound from a section-by-section continuous conductor and is concentric in a single plane from an outermost coil section to a concentric innermost coil section, wherein the coils (149) in adjacent PCB layers (47) are oriented circumferentially relative to the axis to define symmetrical stacks of coils (149) in the axial direction, and each stator segment (142) comprises only one electrical phase, wherein each coil (149) has a first terminal (51) at the outer edge of the coil (149) and a second terminal (53) in the center of the coil (149), wherein a first via (55.1) couples the second terminal (53) of a first coil (49.11) of the plurality of coils (149) of a first PCB layer (47.1) of a layer pair (57.1) with a second terminal (53) of a second coil (49.21) of the plurality of coils (149) of a second PCB layer (47.2) adjacent to the first coil of the layer pair (57.1) and wherein a second via (55.2) couples the first terminal (51) of the second coil (49.21) of the plurality of coils (149) of the second PCB layer (47.2) of the layer pair (57.1) with a first terminal (51) of a further coil (49.12) adjacent to the first coil of the plurality of coils (149) of the first PCB layer (47.1) of the layer pair (57.1).

The present disclosure relates to a device that can image magnetic particles through a Field Free Line (FFL) formed in a single direction. The single side magnetic particle imaging device according to an embodiment of the present disclosure includes: a pair of selection coils arranged in parallel in an x-axial direction and configured to create a y-axial Field Free Line (FFL) in a Field of View (FOV); a driver coil disposed under the pair of selection coils and configured to move the FFL in a z-axial direction by generating a magnetic field; An excitation coil disposed over the pair of selection coils and configured to excite magnetic fields in the FOV by generating a magnetic field in the FOV; and a pair of receiver coils arranged in parallel in a y-axial direction over the excitation coil and configured to receive signals generated by the magnetic particles, respectively.

A system has an axial field rotary energy device with an axis, a printed circuit board (PCB) stator and a rotor with a rotor shaft and rotor disks having respective permanent magnets (PM). The rotor rotates about the axis relative to the PCB stator. A variable frequency drive (VFD) has VFD components coupled to the axial field rotary energy device. A device enclosure contains the axial field rotary energy device. A VFD enclosure contains the VFD, and the device and VFD enclosures are axially aligned and coupled to each other. A cooling system is integrated within the device and VFD enclosures and cools the axial field rotary energy device and the VFD. The cooling system has a cooling fan located axially outboard of the device and VFD enclosures. The cooling fan circulates an air flow radially and axially relative to the device and VFD enclosures.

The application discloses a kind of stator assembly and axial magnetic field motor, the stator assembly includes shell, stator core, coil, pole shoe and stator cover plate, wherein stator core, coil and pole shoe are arranged in the space surrounded by shell and stator cover plate;Coil is arranged in the opening slot of stator core;Pole shoe is fixed on stator cover plate, when stator cover plate and shell butt joint, pole shoe can be arranged at the slot opening of opening slot.The stator core in the application has opening slot, thereby facilitating the installation of coil, at the same time, pole shoe is fixed on stator cover plate, when stator cover plate and shell butt joint, pole shoe and the slot opening of opening slot correspond to each other can reduce the tooth harmonic of motor, reduce the iron loss of motor, improve the efficiency of motor, and reduce the torque ripple of motor.As pole shoe is carried on stator cover plate, in assembly, after directly butt joint stator cover plate and shell, pole shoe can be matched with opening slot, thereby improving the production efficiency of motor.

The invention discloses an axial magnetic field motor and a vehicle, the motor comprises a housing, a motor shaft, a sealing plate, a stator module and a rotor module, and the housing defines an accommodating cavity; the motor shaft rotatably penetrates through the machine shell in the axial direction. The sealing plate is arranged in the accommodating cavity, the sealing plate and the side plates enclose to form a closed stator accommodating cavity, and the sealing plate and the end cover enclose to form a rotor accommodating cavity; the stator module is arranged in the stator containing cavity and comprises a stator assembly, an outer cavity is formed between the periphery of the stator assembly and the side plate, an inner cavity is formed between the inner periphery of the stator assembly and the sealing plate, the stator assembly is fixedly connected with the side plate through a first partition plate, and the first partition plate divides the outer cavity into two sub-cavities. The shell is provided with an oil inlet and an oil outlet which are respectively communicated with the two sub-cavities; the rotor module is rotatably arranged in the rotor accommodating cavity. By means of the mode, the stator is fixed reliably, the motor has a good cooling effect, and the reliability and the NVH performance are both greatly improved.

An integral motor pump (IMP) or integral motor turbine (IMT) includes an axial field permanent magnet synchronous motor (PMSM) having a stator that is sealed by a disk-shaped non-conducting stator cover axially interposed between the stator and PMSM impeller, such that eddy currents are not generated in the stator cover by the rotating permanent magnets of the impeller. The stator cover can be annular, and can be fixed directly to the stator housing, or pressed against the stator housing by brackets. The seal can be formed by an adhesive, and / or by at least one gasket. Either the stator cover or the brackets can include flanges extending axially proximate the stator housing, and attached to the stator housing by any combination of an interference fit, an adhesive, set screws, or a protrusion extending into an indentation. In embodiments, the bracket flanges are welded to the stator housing.

The invention discloses a detection method for detecting the installation state of equipment. The detection method comprises the following steps: starting the detection equipment, setting a first time window and a first energy window, carrying out external-radiation-source-free scanning for a first preset time, obtaining single event counts and coincidence event counts of all detectors according to data obtained by the external-radiation-source-free scanning, and sending the single event counts and the coincidence event counts to the detection equipment; judging whether the connection state of the corresponding detector is normal or not according to the single event count and the coincidence event count; if the connection states of all the detectors are normal, a radiation source capable of penetrating through the axial view field of the detection equipment is scanned, whether the installation sequence of the detectors is correct or not is determined according to data obtained through scanning, and the detection equipment is composed of all the detectors. According to the invention, the installation sequence of the detectors can be automatically detected, problem points can be directly found out, manual checking one by one is replaced, and the detection efficiency is high.

The application provides an axial magnetic field motor and a stator thereof, wherein the stator comprises a core, the core comprises a yoke part and a plurality of tooth parts which are arranged at intervals in the circumferential direction on the yoke part; a winding, the winding comprises a plurality of coil assemblies and a bridge line circuit board, each tooth part is sleeved with a coil assembly, the bridge line circuit board has a plurality of positioning holes which are arranged at intervals in the circumferential direction, each tooth part is inserted into a positioning hole, so that the coil assembly can be compressed between the bridge line circuit board and the yoke part under the action of the self weight of the core, and the coil assembly is welded on the bridge line circuit board, without additional design of a positioning tool, the assembly process is simplified and the cost is reduced, not only the axial dimension of the stator is reduced, but also the air gap size is ensured, the product quality is greatly improved, and the production efficiency and product qualification rate are improved.

The application relates to a high-torque axial magnetic field motor, belonging to the motor technical field, which comprises a shell, the shell is provided with an upper annular accommodating groove, a lower annular accommodating groove and a plurality of stator mounting channels, the stator mounting channels are communicated with the upper annular accommodating groove and the lower annular accommodating groove, the plurality of stator mounting channels are equidistantly arranged around the central axis of the shell, a liquid cooling channel is arranged in the shell, the liquid cooling channel sequentially passes by the two sides of each stator mounting channel, and the liquid inlet end and the liquid outlet end of the liquid cooling channel are arranged to extend from the shell; a stator body is arranged in each stator mounting channel, the top end and the bottom end of the stator body are provided with windings, the opposite sides of the two groups of windings are attached to the shell, and the liquid cooling channel is located between the two groups of windings; an upper cover is rotationally arranged on the top of the shell, the upper cover is provided with an upper rotor group; a lower cover is rotationally arranged on the bottom of the shell, and the lower cover is provided with a lower rotor group. The application has the effects of improving the light weight of the motor and improving the heat dissipation efficiency of the motor.

The application relates to an axial magnetic field motor, in particular to a rotor disc of an axial magnetic field motor, a manufacturing method and a rotor assembly. The rotor disc comprises a laminated unit, the laminated unit comprises two semi-products with different magnetizing directions, the semi-products comprise a plurality of circumferentially spaced pre-magnetized magnetic steels, the NS poles of the pre-magnetized magnetic steels of each semi-product face the same direction, the plurality of semi-products are overlapped by the pre-magnetized magnetic steels to obtain the laminated unit, and the NS poles of two adjacent pre-magnetized magnetic steels of the laminated unit face opposite directions; and a combination body which combines the two semi-products. The assembly process is reduced, the magnetizing process difficulty is reduced, and the production efficiency is improved.