468 results about "Outer coil" patented technology

The invention discloses a newly-built structure prestress and duct defect integrated monitoring device and method.The device comprises integrated monitoring sensors pre-buried in a concrete structure, and the integrated monitoring sensors wrap the periphery of a prestressed tendon in a sleeve mode and are arranged in an array mode in the length direction of the prestressed tendon; the functions of an electromagnetic elastic absolute stress sensor and a magnetostrictive ultrasonic guided wave transducer can be realized at the same time; an outer-layer coil in the sensor can serve as a magnet exciting coil of an electromagnetic elastic absolute stress sensor and a bias magnetizing coil of a magnetostrictive ultrasonic guided wave transducer at the same time, a magnetoelectric conversion element is used for collecting magnetic characteristic signals of a to-be-tested prestressed tendon, and an inner-layer coil is used for exciting and receiving ultrasonic guided waves. Reflection and transmission signals between different sensors can be compared, and damage positioning and quantification are achieved. The device can simultaneously measure information such as various damages and stresses in the component, and has the characteristics of convenience in operation, long-term monitoring, high monitoring precision and the like.

One variation of a system for an electric motor includes a set of coil assemblies defining: an inner radial facet, an outer radial facet, a first axial facet, and a second axial facet opposite the first axial facet. Additionally, each coil assembly in the set of coil assemblies includes a receiving member arranged at the outer radial facet of the coil assembly. Furthermore, the system includes a rotor comprising a set of magnetic elements: encompassing the inner radial facet, the outer radial facet, the first axial facet, and the second axial facet of the set of coil assemblies; and defining a radial magnetic tunnel. The system also includes a housing: engaging the receiving member of each coil assembly, in the set of coil assemblies to couple the housing to the set of coil assemblies; and includes a shaft coupled to the set of magnetic elements.

A power reception device includes: a housing including a first surface facing in a first direction, a second surface facing in a second direction opposite to the first direction, and a side surface surrounding a space between the first surface and the second surface; a coil antenna wound in a circle; a shielding sheet disposed over the coil antenna; and a first magnet and a second magnet adjacent to an outermost coil of the coil antenna and disposed to be spaced apart from the outermost coil. The first magnet is disposed so that a portion of magnetism induced by the first magnet is formed in the first direction. The second magnet is disposed so that a portion of the magnetism induced by the second magnet is formed in a third direction that is an outside direction from a center of the coil antenna.

The present invention provides a spiral sleeve heat exchanger, which relates to the technical field of heat exchangers and includes an outer tube, an inner tube, a positioning tube, an arc-shaped side plate, and a heat insulation assembly. The inner tube is located inside the outer tube, and the inner tube and the outer tube form a sleeve heat exchanger structure. One end of the positioning tube penetrates through the outer tube and is fixedly welded to the outer wall of the inner tube, and the positioning tube is fixedly welded to the outer tube. In the present invention, by adopting spiral inner and outer tubes, when the metal temperature difference between the inner and outer coils is large, the inner and outer coils will produce deformations of different sizes. Since there is a large gap between the inner and outer coils, their deformations will not be restricted by each other; and the spiral coil has greater elasticity than a straight tube, which can eliminate most of the temperature difference stress, avoid the use of expansion joints, and thus reduce costs and leakage risks.

Described herein are fractional-slot-winding motors and electric vehicles using such fractional-slot-winding motors. In some examples, a fractional-slot-winding motor comprises a stator, a bus-bar assembly, and a plurality of coil units. The stator comprises a plurality of stator slots (e.g., 63 slots) extending through the core and radially offset relative to each other. Each dual-leg coil unit extends through two different stator slots and is electrically coupled to two other coil units on the coil-interconnection side of the rotor. Each single-leg coil unit extends through one coil slot and is electrically coupled to one other coil unit on the coil-interconnection side. At least some single-leg coil units can be coupled to a bus-bar assembly. Furthermore, the ends of the coil unit can have radial offsets relative to protruding portions, e.g., closer to the motor primary axis at the coil-interconnection side and further away on the opposite side.

The invention discloses an external coiling device of a constant tension machine. According to the technical scheme, the winding device comprises a winding support assembly, wherein the winding support assembly comprises a first winding support and a second winding support which are oppositely arranged; the two ends of the cloth roller are connected with a driving rotating shaft and a supporting rotating shaft through detachable structures respectively, and the driving rotating shaft and the supporting rotating shaft are oppositely arranged on the first winding support and the second winding support respectively; the driving mechanism drives the cloth roller to rotate through a driving rotating shaft; the tension roller is used for receiving the cloth input from the weaving machine and conveying the cloth to the cloth roller; and the tension detection mechanism detects the tension value of the tension roller in real time through a tension sensor. According to the scheme provided by the utility model, large-package, constant-tension and efficient and synchronous winding operation with a weaving machine can be realized.

The invention relates to the technical field of transformers, in particular to an energy-saving and environment-friendly dry-type transformer which comprises a base, an inner-layer coil, an outer-layer coil, a supporting frame, a spacer, a cooling part and a first fan, the inner-layer coil is arranged on the base, the outer-layer coil is arranged outside the inner-layer coil, and the supporting frame is used for supporting the inner-layer coil and the outer-layer coil. The spacer is provided with an air outlet hole, the spacer is arranged between the inner-layer coil and the outer-layer coil and divides an upper cooling cavity and a lower cooling cavity, the first fan is arranged on the base, so that airflow enters the air outlet hole from the lower cooling cavity at the bottom, and the cooling part is communicated with the air outlet hole and the upper cooling cavity. Therefore, airflow is promoted to enter from the lower cooling cavity at the bottom and is guided to the cooling cavity above through the air outlet holes in the spacer. Therefore, the heat can be quickly absorbed by the medium in the cooling cavity, and then the heat of the upper coil is dissipated through the upper cooling cavity, so that the purpose of high-efficiency cooling is achieved.

The invention relates to the technical field of radio frequency coils, and particularly discloses a device for improving the magnetic field intensity of a partial region of a radio frequency coil, and the device comprises an outer coil which serves as a main magnetic field generation element and is used for generating a basic magnetic field in the internal space of the device; the plurality of metal small rings are uniformly and coaxially distributed in the internal space of the outer side coil in an annular array mode, and each metal small ring has one or two of the following freedom degree adjusting modes at the same time so as to adapt to scanning samples of different sizes: radial stretching: each metal small ring can be independently subjected to stretching adjustment along the radial direction of the metal small ring; and axial rotation: each metal small ring can independently rotate around the tail end of the metal small ring. The method has high adaptability to scanning samples of different sizes and shapes, can achieve the remarkable enhancement of a magnetic field in a specific area, and effectively improves the radio frequency excitation efficiency and the receiving signal-to-noise ratio.

The utility model discloses an axial magnetic flux motor adopting a printed winding, which comprises a stator, the stator comprises a printed circuit board and a plurality of stator cores, the printed circuit board is formed by combining a plurality of PCB windings, a mounting hole is arranged in the middle of each PCB winding, the stator cores are mounted in the mounting holes, the stator cores are formed by winding magnetic conductive amorphous materials, and the printed circuit board and the stator cores are arranged in the mounting holes. After the stator core is arranged in the center of the coil, the equivalent air gap is the physical air gap, the magnetic resistance is small, the power density is high, materials can be greatly saved, the power density is improved, the stator core made of the magnetic conductive amorphous material greatly simplifies the processing and manufacturing process of the motor, and the stator core is greatly helpful for batch production of the motor. In addition, the coil does not face the alternating magnetic field of the air gap in the main magnetic circuit, the eddy current on the coil is inhibited, the efficiency is ensured, the stator core is formed by winding the amorphous material, the amorphous material can meet the high-frequency occasion, the iron loss at high speed and high frequency is very small, and the high-speed efficiency of the motor can be well ensured.

The invention discloses a vibration energy collecting device which comprises a mandrel, a first magnetic part, a second magnetic part, a coil and a third magnetic part, the first magnetic part and the second magnetic part are arranged at the two ends of the mandrel respectively, and at least part of the first magnetic part and at least part of the second magnetic part are both located outside the peripheral face of the mandrel; the coil surrounds the mandrel and is arranged between the first magnetic piece and the second magnetic piece; a third magnetic part is arranged between the first magnetic part and the second magnetic part, the third magnetic part and the first magnetic part repel each other, the third magnetic part and the second magnetic part repel each other, and the third magnetic part is arranged on the peripheral face of the mandrel in a sliding and sleeving mode. The vibration energy collecting device can collect vibration energy for power generation and is applied to the technical field of vibration energy recovery.

In order to solve the high-frequency hardening problem of a magnetorheological damper in the prior art, the variable-stiffness decoupling type magnetorheological damper comprises an end cover, screws, a cylinder cover, a cylinder body, a piston rod, a piston assembly, an inner coil and an outer coil, the end cover, the cylinder cover and the cylinder body are fixed through the screws, the cylinder cover and the cylinder body form a closed cavity, and the cavity is filled with magnetorheological fluid; one end of the piston rod sequentially penetrates through the cylinder cover, the piston assembly and the bottom of the cylinder body, the inner side of the piston assembly is fixedly connected with the outer side of the piston rod, a gap is reserved between the outer side of the piston assembly and the inner wall of the cylinder body to form a damping channel, and the inner coil and the outer coil are wound on the piston assembly. According to the variable-stiffness decoupling type magnetorheological damper, by adding the magnetorheological elastomer, variable-stiffness connection of the piston assembly and the piston rod of the magnetorheological damper is achieved, high-frequency dynamic decoupling of the magnetorheological damper is achieved, and the high-frequency application range of the magnetorheological damper is expanded. The invention belongs to the field of satellite platform vibration control.

To suppress uneven heating in an induction heating cooker formed by winding a conductor around a substrate.SOLUTION: An induction heating cooker includes an insulating multi-layer substrate, an inner coil formed by winding a conductor across two layers of the substrate, an outer coil formed by winding a conductor across two layers of the substrate and formed outside the outermost circumference of the inner coil, and a power supply substrate to which the inner coil and outer coil are independently connected.SELECTED DRAWING: Figure 15

The car coupler comprises a movable shaft assembly and a fixed shaft assembly, the movable shaft assembly comprises a car coupler fixing base and a movable shaft, a two-stage spring damping system is arranged in the movable shaft assembly, and the two-stage spring damping system comprises a spring outer coil and a spring inner coil which are coaxially connected in a sleeved mode. The spring inner roll is embedded in the inner side of the spring outer roll, a top sleeve is arranged at the tail end of the spring inner roll, one end of the spring inner roll is connected with the spring seat, and the other end of the spring inner roll abuts against the top sleeve; the fixing shaft assembly comprises a cotter pin, a knuckle bearing supporting seat and a fixing shaft, the cotter pin penetrates through one end of the knuckle bearing supporting seat, and the knuckle bearing supporting seat is connected with one end of the fixing shaft through the cotter pin. The scheme has the characteristic of three-dimensional shock absorption, and full-degree-of-freedom buffer shock absorption in the axial direction, the radial direction and the rotating direction is realized by arranging the spring outer roll, the spring inner roll, the rubber pad and the knuckle bearing; the scheme also has intelligent grading response, and is safer through double-spring cooperation.

A sensor driving device can include an image sensor substrate including a fixed portion, a moving portion movable with respect to the fixed portion, and a connection portion connecting the fixed portion and the moving portion, a coil moving substrate disposed on the image sensor substrate to be movable with the moving portion of the image sensor substrate, and a coil unit disposed on the coil moving substrate. Also, the coil unit includes a plurality of coils each disposed in a plurality of first corner portions of the coil moving substrate, and the connection portion includes a plurality of bent portions that overlap each of the plurality of coils in an optical axis direction and are bent in different horizontal directions.

The high-pressure-resistant sensor comprises a shell, the shell comprises a body and a cover, a cavity is formed in the body, an opening is formed in one end in the length direction of the body, and the cover is detachably arranged at the opening to seal the shell; the sensing unit is contained in the cavity and comprises a double-coil vibration head module and a signal enhancement module, the double-coil vibration head module comprises a supporting framework, a magnetic tank and a coil assembly, the coil assembly is arranged on the supporting framework and comprises an inner coil and an outer coil which are coaxially arranged, and the diameter of the outer coil is larger than that of the inner coil; the axial directions of the inner coil and the outer coil are consistent with the length direction of the body; the signal enhancement module is coaxially arranged on the periphery of the double-coil vibration head module. According to the invention, the signal penetration capability is stronger, and a thicker metal shell can be penetrated; in addition, the magnetic tank and the coil assembly are wrapped by a strip-shaped amorphous nanocrystalline material with high magnetic permeability, so that the penetrating power of signals is effectively enhanced.

The utility model belongs to the technical field of welding, and relates to a swing structure and a wire bonder, the swing structure comprises a rotating shaft, a swing body, a driving assembly and a monitoring assembly; the swinging body can swing around the rotating shaft under the action of the driving assembly, and an arc-shaped mounting surface is arranged on the tail end surface of the swinging body; the monitoring assembly comprises a grating ruler which is attached to the mounting surface; the driving assembly comprises a coil, the coil is fixed to the swing body, and a heat dissipation gap is formed between the coil and the mounting face. The tail end face of the swing body is provided with the arc-shaped mounting face, the grating ruler is fixed to the mounting face, parts do not need to be additionally arranged for placing the grating ruler, the structural design of the swing body can be simplified, and the motion inertia of the swing body is reduced; besides, a heat dissipation gap is formed between the coil and the mounting surface, so that enough space is formed around the coil and the grating ruler for air circulation, heat dissipation of the coil and the grating ruler is facilitated, and the situation that the measurement precision is affected due to the fact that scales of the grating ruler are changed due to high temperature is prevented.

The invention relates to the technical field of reaction kettles, in particular to an outer coil half-pipe type heating stainless steel reaction kettle which comprises a shell unit and a release unit, the shell unit comprises a kettle body, a top cover, a stirring mechanism and an outer coil pipe, the outer coil pipe is spirally wound on the outer surface of the kettle body, and the release unit comprises an air inlet pipe fixedly connected to the bottom end of the outer coil pipe. The top end of the outer coil pipe is fixedly connected with an exhaust pipe. Compared with the prior art, the release unit is arranged, steam enters the air inlet pipe and then drives the air flow blades to rotate, the vertical rod is driven to eccentrically rotate, a shifting block at the top of the release unit shifts a short rod, a center rod and fan plates annularly distributed on the outer surface of the center rod intermittently rotate, gaps are formed between the fan plates and the exhaust pipe when the fan plates rotate to discharge the steam, and the steam is prevented from flowing out when the fan plates are static; therefore, the residence time of the steam in the outer coil pipe is prolonged, indirect discharge of the steam is realized, the residence time of the steam in the outer coil pipe is prolonged, and the heat exchange efficiency of the steam and the kettle body is improved.

A stator for an electric axial flux machine includes a support structure with two support discs having star extensions, a rotor shaft bearing, and coil units each arranged between two pairs of star extensions following one another in the circumferential direction and are thereby fixed in the circumferential direction. Respective end portions of each laminated core of the coil units project beyond the support structure in the axial direction. Radially external fixing ends of the star extensions project radially outwards beyond the coil units. The coil units are clamped radially in the direction of the rotor shaft bearing by a clamping ring. A stator outer shell is arranged between the support discs and radially surrounds the coil units in the circumferential direction, the stator outer shell being attached to the fixing ends of the star extensions for conjoint rotation.

An electric machine configured to transmit electrical power (e.g., by conversion between electrical power and mechanical power) includes a slot in which a coil is disposed. The slots may be stator slots having a trapezoidal cross-sectional shape. The coil may have a plurality of turns, the cross-section of which also includes a trapezoidal shape. The turns may be stacked on each other in a radial direction between a proximal end and a distal end of the stator slot, each turn of the coil having a different cross-sectional area and a different radial height relative to an adjacent turn of the coil. Additionally and / or alternatively, each turn of the coil has a reduced radial height relative to a turn of the coil located radially outside of each turn of the coil except for the turns of the coil located at the distal end of the stator slot.

The bending structural body comprises: an inner cylinder that is formed from a first inner coil part and a first outer coil part, and in which wound parts corresponding to the first inner coil part are respectively fitted to pitches between adjacent wound parts of the first outer coil part; an outer cylinder that covers at least some of the outer circumference of the inner cylinder with a space therebetween, that is formed from a second inner coil part and a second outer coil part, and in which wound parts corresponding to the second inner coil part are respectively fitted to pitches between adjacent wound parts of the second outer coil part; and drive wires and guide wires that are guided and axially inserted into the space between the inner cylinder and the outer cylinder.

A switchable coil includes a first coil including a first outer coil and a first inner coil, the first inner coil and the first outer coil forming a first crossing-region, a second coil including a second outer coil and a second inner coil, the second inner coil and the second outer coil forming a second crossing-region, and the second crossing-region being inside the first inner coil viewed in a first direction, and a switch connected to a region facing the second crossing-region in the second inner coil.

A flexural structure, in which a multi-structured flexible body is capable of displacing from an extended state to a flexed state, includes: an outer coil spring, constituting the multi-structured flexible body; an inner coil spring, provided inside the outer coil spring and having a wire overlap a wire of the outer coil spring in a coil radial direction to constitute the multi-structured flexible body; a one-side receiving member, receiving one side of the multi-structured flexible body; and an other-side receiving member, receiving an other side of the multi-structured flexible body. A close-contact state between wires of the inner and outer coil springs and is set in accordance with a spacing between the one-side receiving member and the other-side receiving member.

A bending operation mechanism comprises: an elastically bendable driving part; an elastically bendable driven part that is provided separate from the driving part; and a linking part that connects the driving part and the driven part, and tensions and bends the driven part in accordance with bending of the driving part. The driving part and the driven part each comprise an inner coil part and an outer coil part that are bendable with respect to the axial direction, and wound parts corresponding to the inner coil part are respectively fitted to pitches between adjacent wound parts of the outer coil part.

The invention relates to an inductance type absolute position encoder and a motor. The encoder comprises an excitation module, an inductance module, a detection module, an analog-to-digital conversion module and an absolute position calculation unit. The inductance module comprises a stator and a rotor, the rotor comprises inner and outer base coils, and the stator comprises an excitation coil and inner and outer induction coils; the inner group of induction coils and the outer group of induction coils of the inner induction coil and the outer induction coil are respectively composed of three induction coils with the phase difference of 120 degrees; and the absolute position calculation unit is used for carrying out dimension reduction processing on the input digital signals through matrix transformation so as to eliminate errors and output absolute position information. According to the invention, the three-coil internal and external combination mode with the phase difference of 120 degrees is adopted, and the coupling influence of the internal and external coils is eliminated through matrix transformation, so that absolute position information with higher precision and resolution can be obtained through electromagnetic induction.

The invention provides a multi-degree-of-freedom active electromagnetic vibration isolator and a vibration isolation system, an end cover assembly of the vibration isolator comprises a central iron core wound with a central coil and a top plate, the central iron core is arranged on the top plate, a horizontal electromagnetic force assembly comprises a plurality of armatures wound with outer coils and first height adjusting cushion blocks, the armatures are arranged on a base through the first height adjusting cushion blocks, and the armatures are arranged on the base through the first height adjusting cushion blocks. All the armatures are arranged around the central axis of the end cover assembly, the included angle between every two adjacent armatures is 90 degrees, and the end faces of the armatures all face the central axis of the end cover assembly. The vertical electromagnetic force assembly comprises a plurality of magnetic conduction pieces and second height adjusting cushion blocks, permanent magnets are embedded in the inner sides of the magnetic conduction pieces, the magnetic conduction pieces are arranged on the base through the second height adjusting cushion blocks, all the magnetic conduction pieces are arranged around the center axis of the end cover assembly, and the included angle between every two adjacent magnetic conduction pieces is 90 degrees. The active vibration isolation force is adjusted by means of control currents in all coils in the electromagnetic assembly, vibration generated by large power equipment can be effectively restrained, and the multi-degree-of-freedom vibration isolation device is suitable for a multi-degree-of-freedom vibration isolation system with different requirements for the vibration isolation effect.

The embodiments of the present application disclose a drive assembly, a vehicle, and a control method, which relate to the field of vehicle technology and can solve the problem of being large in size and not being able to meet the high power density requirements of the vehicle. The drive assembly includes a motor and a clutch transmission group. The motor includes a stator with inner and outer coils, a rotatable outer rotor arranged on the outside of the stator, and a first inner rotor and a second inner rotor rotatable on the inside of the stator, and the first inner rotor and the second inner rotor are independently arranged. The clutch transmission group includes a first input end, a second input end, and a first output end and a second output end. The outer rotor and the first inner rotor are both transmission-connected to the first input end. The outer rotor and the second inner rotor are both transmission-connected to the second input end. The first input end and the first output end are transmission-coupled, and the second input end and the second output end are transmission-coupled. The first output end is used for transmission connection to the left wheel, and the second output end is used for transmission connection to the right wheel.

The invention relates to a control method during heating starting of an air source heat pump, which comprises a heat pump unit, an environment temperature sensor, a water inlet temperature sensor and an outer coil pipe temperature sensor, and the control method comprises the following steps: in an acquisition stage, the heat pump unit acquires downtime t1 and sets a downtime judgment value t1; the environment temperature sensor collects the environment temperature T1, and the heat pump unit sets an environment temperature judgment value T1; the water inlet temperature sensor collects the water inlet temperature T2, and the heat pump unit sets a water inlet temperature judgment value T2; an outer coil pipe temperature sensor collects an outer coil pipe temperature T3, and a heat pump unit sets an outer coil pipe temperature judgment value T3; the heat pump unit records defrosting operation time t2 and sets a defrosting time judgment value t2; the control stage is divided into six steps. The method has the advantages that defrosting operation is performed firstly after the unit is started for heating, lubricating oil deposited on the evaporation side is quickly sucked back to the compressor, and reliable operation of oil return is ensured when the compressor is started.

The invention discloses a coil excitation Hall thruster magnetic circuit structure suitable for a krypton working medium, relates to the technical field of aerospace technology and plasma propulsion, and solves the problems of low ionization efficiency and insufficient characteristic length of an existing Hall thruster after krypton is used. A magnetic conductive inner core is arranged at one end of a bottom plate, and a magnetic conductive cover is arranged at the other end; an inner magnetic pole is arranged at the upper end of the magnetic conductive inner core; an inner coil is arranged between the inner magnetic pole and the bottom plate and corresponds to the outer side of the magnetic conductive inner core; an outer coil is arranged between the outer magnetic pole and the bottom plate and corresponds to the inner side of the magnetic conductive cover; a ceramic channel is arranged between the inner coil and the outer coil; the bottom plate comprises an inner bottom plate and an outer bottom plate, the inner bottom plate and the outer bottom plate are coaxially arranged, and a bottom plate gap is formed between the inner bottom plate and the outer bottom plate. The characteristic length of a magnetic field in a discharge channel can be remarkably prolonged, the krypton ionization efficiency is improved, and meanwhile the structure of the thruster is simplified.

The invention discloses a CS outer coil superconducting conductor forming machine, and relates to the technical field of four-side extrusion forming machines, the forming machine comprises a forming machine main body, two sides of the forming machine main body are respectively provided with a feed port and a discharge port, and a primary pressing device, a secondary pressing device and a shaping device are sequentially arranged in the forming machine main body along the direction from the feed port to the discharge port; the cross section of a circular conductor is gradually transited to an approximately elliptical cross section by using two groups of three-roller centering pressing mechanisms, and then the cross section of the circular conductor is reduced into a square conductor cross section through the matching of four second pressing roller assemblies and four shaping rollers, so that the conductor cannot be damaged in the whole pressing process, and meanwhile, the production efficiency is improved. According to the conductor forming machine, more uniformity in the pressing process can be ensured, so that the production cost is reduced, the production efficiency is improved, meanwhile, the overall compactness of the conductor forming machine can be realized through the close fit among the primary pressing device, the secondary pressing device and the shaping device, and meanwhile, the close fit among all structures can be ensured.

The present invention discloses a CS outer coil superconducting conductor forming machine, which relates to the technical field of four-sided extrusion forming machines, comprising: a forming machine main body, wherein a feed port and a discharge port are respectively provided on both sides of the forming machine main body, and a primary pressing device, a secondary pressing device and a shaping device are sequentially arranged in the forming machine main body along the direction from the feed port to the discharge port; two sets of three-roller centering pressing mechanisms are used to gradually transition the circular conductor cross-section to an approximately elliptical cross-section, and then the diameter is reduced to a square conductor cross-section through the cooperation of four second pressing roller assemblies and four shaping rollers, so that the conductor will not be damaged during the overall pressing process, and at the same time, it can be ensured that the pressing process is more uniform, thereby reducing production costs and improving production efficiency. At the same time, the close cooperation between the primary pressing device, the secondary pressing device and the shaping device can also achieve the overall tightness of the conductor forming machine, and can also ensure that the various structures can cooperate closely.