481 results about "Spiral coil" patented technology

The invention relates to the technical field of electromagnetic coils, in particular to a laminated special-shaped plane spiral coil winding. The laminated special-shaped planar spiral coil winding is composed of at least two coil layers, and each coil layer is composed of a single special-shaped planar spiral coil. The inner ring part of the special-shaped plane spiral coil is a concentric plane spiral coil, and the outer ring part of the special-shaped plane spiral coil is a tooth-shaped spiral coil extending along the outer periphery of the concentric plane spiral coil; all phases of the coil winding are different in layer, the electrified magnetic field center of each coil layer deviates from the geometric center, and the projection of the magnetic field center of each phase in the plane of the coil winding is in central symmetry distribution. The invention innovatively provides a laminated special-shaped planar spiral coil winding, and provides a squirrel-cage equivalent rotor on the basis of the laminated special-shaped planar spiral coil winding, so as to provide competitive choices for reducing copper loss and improving heat dissipation, magnetic conductivity, structural strength and economic cost of an axial flux motor winding.

The invention discloses a three-dimensional integrated packaging structure and a packaging process thereof. The three-dimensional integrated packaging structure comprises a flip or normal chip with a functional surface and an opposite back surface; the rewiring layer and the chip are vertically stacked and electrically connected with each other; electrically leading the rewiring layer out of the packaging structure; the stacking direction of the inductor and the chip is parallel to the thickness direction of the chip, the inductor and the chip, the rewiring layer and the lead-out structure are physically isolated through an insulating medium layer, the inductor is of a spiral, multi-ring layer overlapping or sectional winding structure, the inductor comprises a magnetic core, a spiral coil surrounding the surface of the magnetic core is formed through etching and electroplating processes, and the lead-out structure is arranged on the surface of the spiral coil. The spiral coil comprises a circuit A, a circuit B and a circuit C, and the magnetic core and the spiral coil are encapsulated by the insulating medium layer. The inductor and the chip are stacked in an inverted or normal mode, the three-dimensional structure saves space, reduces parasitic inductance, resistance and the like, signal transmission is stable, electromagnetic interference is small, and the three-dimensional structure is suitable for the chip packaging field of miniaturization, high integration and the like.

The invention relates to the technical field of electromagnetic coils, in particular to a laminated planar spiral coil winding. The laminated planar spiral coil winding is formed by laminating at least two layers of planar spiral coils, the spiral center fitting line formed by each turn of wire is linear, the planar spiral coils occupy the whole winding plane, the strong magnetic center deviates from the geometric center of the planar spiral coils, and the phases of the winding are different in layer. The invention aims to provide competitive choices for the axial flux motor winding, such as high copper full rate, low copper loss, large air gap, easy heat dissipation and low production cost.

The invention discloses stranding equipment for wire and cable production and manufacturing and a use method thereof, and relates to the technical field of cable production. The movable abutting plate is provided with a spherical surface used for limiting the twisting position of the outer stranded wire. According to the stranding equipment for wire and cable production and manufacturing, outer stranded wires are extruded in the stranded wire conveying direction through the movable abutting plates, so that the lead angles of the outer stranded wires are reduced, in the winding process of multiple strands of outer stranded wires, each strand of outer stranded wires is subjected to forward thrust of a spherical surface when being wound for one circle, and the outer stranded wires are not prone to falling off when being wound. When the friction force is too small, the thrust is transmitted forwards by the rear circle, so that the front spiral circle slightly moves forwards under the thrust force, the distance that the outer stranded wire slides backwards relative to the inner stranded wire due to too small friction force is compensated, and the strand scattering problem caused by relative sliding is reduced. And the inner and outer stranded wires are blown through the air supply unit, so that dust on the sheath is reduced, and the friction force between the inner stranded wire and the outer stranded wire is prevented from being reduced.

Spiral inductors, magnetic field sensors incorporating the spiral inductors, and methods of using the magnetic field sensors are provided. The spiral inductors include an electrically conductive spiral coil and a nitrogen vacancy (NV) diamond substrate. A thin barrier layer of a dielectric material separates the spiral coil from the surface of the NV diamond substrate and an overlayer of dielectric material is disposed over the spiral nanocoil. The integration of the spiral coil with an NV substrate in this manner creates a highly enhanced magnetic transduction and produces a simple, high-performance way to control and read out electromagnetic signals. Because the spiral inductors enable electromagnetic-to-optical signal conversion, they can be used as sensors for environmental or biomedical applications and spin-based computation.

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.

The utility model discloses a pipe coiling device, which belongs to the technical field of pipe coiling, is used for spiral pipe coiling of steel pipes, and comprises a support frame, a linear motion mechanism, a rotary motion mechanism, a limiting mechanism, a central shaft sleeve and a locking mechanism, one end of the steel pipe is connected with one end of the central shaft sleeve through a limiting mechanism and is locked through a locking mechanism; the linear motion mechanism and the rotary motion mechanism are used for driving the center shaft sleeve to do linear motion and rotate around the center shaft at the same time, and spiral pipe coiling of the steel pipe is achieved. The pipe coiling device can effectively solve the problems that in the prior art, a spiral pipe machined by a traditional pipe coiling machine is large in coaxiality deviation, and the strict requirement of high-precision equipment for pipe precision is difficult to meet; the steel pipe is easy to pop up accidentally in the machining process, and serious potential safety hazards are caused to operators and peripheral equipment.

The invention discloses an immersed rotating packed bed combined coil device and method for reactive extraction, and the combined coil device comprises a shell, a liquid inlet, a sealing assembly, a liquid premixing pipe, a packing assembly, a heat exchange jacket, a liquid emptying port, a liquid outlet and a spiral coil assembly; according to the device, a reactor cavity is completely filled with liquid, so that an immersed reaction environment is formed; and a strong shearing effect is generated by utilizing the supergravity silk screen filler, so that rapid heterogeneous mixing is realized, and the reaction selectivity is improved. Meanwhile, a supergravity reaction area and a coil flow area are combined into a whole, the spiral coil can repeatedly change the flow direction and form vortex to realize continuous flow of the material and maintain the dispersion state of liquid drops, and the retention time of the material is flexibly regulated and controlled by adjusting the length of the coil, so that the reaction conversion rate is remarkably improved.

The invention discloses a horizontal continuous nitration pipeline reactor and a manufacturing method of a refrigerant circulation assembly thereof, and belongs to the technical field of chemical pipeline reactors. The reactor mainly comprises a barrel assembly, a stirring assembly and a refrigerant circulating assembly, and has the advantages of high heat exchange capacity, large unit heat transfer area, high safety and the like. The manufacturing method of the refrigerant circulation assembly is characterized in that a special accessory concentric opposite feeding mechanism is adopted, the mechanism is provided with a bolt chuck and a nut chuck which are coaxial and can move synchronously, and an inner long beam clamping jaw and an outer long beam clamping jaw which can move in the radial direction are arranged on the bolt chuck and the nut chuck respectively. The concentric and opposite accessory feeding mechanism can accurately position components such as angle steel, U-shaped bolts, gaskets and the like and automatically achieve efficient fastening with the spiral coil pipe. According to the method, the technical bottleneck caused by the limited assembly space of the refrigerant circulation assembly is fundamentally solved, efficient and accurate automatic assembly is achieved, and the method has important engineering application value and popularization significance in the technical field of nitrification pipeline reactors.

The invention provides a vertical differential inductor structure and a preparation method thereof, the structure comprises two inductor units, and each inductor unit comprises at least one vertical spiral coil, a first connecting end and a second connecting end. According to the vertical spiral coil, the area of a single-layer inductor is reduced through a metal layer stacking forming mode. The first connecting ends of the two inductor units are connected to the first tap or the two second taps respectively, and the second connecting ends of the two inductor units are connected to the two second taps or the first tap respectively. The two inductor units are symmetrical relative to the vertical plane where the first tap is located to form the differential inductor structure, the quality factor and the anti-interference capacity of the inductor structure are improved, and the inductor structure has a high Q value while the occupied chip area is reduced.

The present invention discloses a fully wireless ocular surface pressure monitoring system based on a multi-frequency phase-shift decoupling self-calibration algorithm, relating to the technical field of intelligent ophthalmic detection. The system comprises a wearable three-layer contact lens, wherein the outer layer is embedded with a capacitive eyelid pressure sensor and a first spiral coil, and the inner layer is embedded with a piezoresistive intraocular pressure sensor and a second spiral coil, which are respectively tuned to different center frequencies to modulate pressure changes into radio frequency signals. Externally powered receiving glasses or eye masks comprise a multi-frequency transmitting coil, a rectifier circuit and a receiving coil, which supply energy to the sensing structure in the contact lens and sense and obtain a composite signal formed by spatial superposition, which is transmitted to a processing circuit and then sent to a mobile computing terminal. The terminal performs multi-frequency decoupling, sparse matrix separation and temporal self-calibration processing to generate calibration curves of eyelid pressure and intraocular pressure, thereby realizing real-time perception of dual parameters in the eyes-closed state. The system has the advantages of compact structure, high signal separation accuracy and high degree of wirelessness.

The present invention discloses a design method for a small-size shielding electromagnetic metamaterial for the KHz band, which relates to the field of metamaterial design technology, including: constructing a double-layer end-to-end spiral coil electromagnetic metamaterial primitive model, simulating the model to obtain inductance parameters and resistance parameters, determining the external lumped capacitance parameters and quality factor; judging whether near-zero permeability may occur; simulating the latest model to obtain a solution for the primitive resonant frequency, and comparing the solution with the resonant frequency required by the design; calculating the model geometric factor; calculating the curve of the complex permeability of the electromagnetic metamaterial; determining the point where the permeability is zero and selecting one's own target near-zero interval; simulating the designed model to observe the shielding effect. The present invention is easy to operate, improves the efficiency and repeatability of the design and manufacturing process, realizes the small size of the metamaterial, can meet the electromagnetic shielding requirements of low frequency bands and high efficiency, and has high practicality and market value.

The invention discloses an anti-offset wireless charging system magnetic coupling mechanism and an optimization design method. A transmitting end of the magnetic coupling mechanism adopts a coil of a bipolar reverse high anti-offset structure, and a receiving end adopts a circular plane spiral coil to reduce the weight of a vehicle-mounted end energy pickup mechanism; the transmitting end bipolar reverse high-anti-offset structure is formed by winding uninterrupted litz wires, an outer ring coil and an inner ring coil are located on the same plane and concentric, and the manufacturing directions are opposite, so that the bipolar reverse characteristic is formed. The transmitting end bipolar reverse high anti-offset structure coil also adopts an anti-offset particle swarm optimization design method considering receiving end plane movement mutual inductance smoothness and coil wire length, and under the condition of considering the transmitting end coil wire length, the magnetic field coupling uniformity in the 360-degree plane movement process of the receiving end is improved. The magnetic coupling mechanism provided by the invention has good anti-offset performance, and still has stable magnetic field coupling characteristics in a large-range moving process of a receiving end.

The utility model provides a multi-channel composite variable-frequency scale ion resonance facility which comprises a shell, a spiral cable, a water inlet straight pipe, a middle spiral coil pipe, a water outlet straight pipe, a flow regulating valve, a composite variable-frequency signal generator and a power supply, and the shell is a cylinder and is made of 316 austenitic stainless steel or 304 austenitic stainless steel; the spiral cable is spirally wound and mounted on the surface of the shell; the water inlet straight pipe, the middle spiral coil pipe and the water outlet straight pipe are made of magnetisable materials; the composite frequency conversion signal generator generates composite electromagnetic frequency conversion signals and is connected between the power source and the spiral cable, and circulating water passes through the multi-channel composite frequency conversion scale ion resonance facility and generates resonance under the action of the composite frequency conversion signal generator. The original saturated calcium and magnesium ion combination and even precipitation state is converted into the calcium and magnesium ion unsaturated state with high fluid solubility, and conditions are provided for subsequent access to a water inlet of heat exchange equipment, equipment maintenance cost reduction and heat exchange efficiency improvement.

The invention relates to the technical field of spiral-wound membrane elements, in particular to a method for increasing the effective membrane area of a spiral-wound membrane element, a storage medium and equipment. The method comprises the following steps: respectively determining an Archimedes spiral expression r1 of an upper page and an Archimedes spiral expression r1'of a lower page in each folded diaphragm; respectively determining an arc length expression L1 corresponding to the r1 and an arc length expression L1'corresponding to the r1 '; determining the dislocation value L0 of the upper page and the lower page of each folding diaphragm according to the difference value of L1 and L1 '; and determining a dislocation value delta L of every two adjacent folding membranes at the folding end. A computer program instruction is stored in the storage medium; the apparatus includes at least one processor, at least one memory, and computer program instructions stored in the memory, the method being implemented when the computer program instructions are executed by the processor. According to the invention, the diaphragm can be fully utilized.

The invention relates to the technical field of metal pipe bending forming manufacturing, in particular to a die for bending forming of multiple rows of spiral coil pipes and a forming regulation and control method, and aims to solve the problems that in an existing spiral coil pipe bending technology, the shape cannot be flexibly changed due to die limitation and shape errors are caused by springback. Comprising a rotating center shaft with a protruding structure, a rolling wheel with a space reserved inside, a gasket with a space reserved inside, a circular baffle used for limiting movement of the rolling wheel and the gasket, and a bolt used for fixing the baffle and the rotating shaft. The base circle and the screw pitch of the coil pipe in the target shape are repeatedly iterated through finite element simulation and based on the trained springback value prediction model, and finally the corrected bent base circle and the screw pitch which reduce the influence of the springback value can be obtained, so that it is ensured that the shape of the spiral coil pipe is consistent with the predicted shape, and the machining quality is guaranteed.

This atom trap device 10 for trapping atoms comprises an atom trap unit 16 on which an atomic gas beam is incident. The atom trap unit 16 includes a plurality of optical elements that form a laser light group 18, and a magnetic field generation unit 22. The magnetic field generation unit 22 is provided with at least two spiral coils and, if necessary, a tapered solenoid coil, and optimizes a magnetic field in a guide direction. The spiral coils are configured so that the tip becomes thinner and the winding density becomes sparse as the atoms advance in the direction in which the atoms are guided. The spiral coils are arranged so as to face each other so that an interval therebetween becomes narrower as the atoms advance in the direction in which the atoms are guided. The tapered solenoid coil generates a magnetic field that optimizes the guiding of the atoms and the laser cooling during the guiding by adjusting the component in the direction in which the atoms of the magnetic field generated by the spiral coils are guided. The atom trap unit 16 may also include a baseball coil instead of the spiral coils and the tapered solenoid coil.

The flow sensor comprises a first fan blade, an inductance coil and a conversion circuit, the inductance coil comprises a wire coil, the end faces of the two axial ends of the wire coil are a first side face and a second side face correspondingly, the first side face is constructed into a spiral coil, the wire coil is arranged on the radial side of the first fan blade, and the second side face is constructed into a spiral coil; the first side face corresponds to the first fan blades at intervals, and the first fan blades are used for rotating relative to the wire coil under the driving of fluid, so that the first fan blades and the wire coil dynamically and alternately get close to and get away from each other, and the inductance value of the inductance coil is changed; the conversion circuit is electrically connected with the inductance coil and is configured to convert the change of the inductance value of the inductance coil into a circuit frequency. According to the flow sensor, the principle that the inductance value of the inductance coil is changed due to the fact that the first blade (the magnetic core part) gets close to or away from the inductance coil is utilized for flow detection, a conversion circuit can be simplified, and the circuit design cost can be reduced.

The utility model relates to a waste heat recovery device for waste water after fabric dyeing treatment, the waste heat recovery device comprises a barrel body, a heat exchange pipe and a cleaning assembly, the heat exchange pipe is a spiral coil pipe and is located in the barrel body, the cleaning assembly comprises a cleaning ring, a brush and a driving part, the cleaning ring is arranged on the heat exchange pipe in a sleeving manner, and the brush is located in the barrel body. The brush is arranged on the cleaning ring and used for brushing the outer side wall of the heat exchange pipe, and the driving part is used for driving the cleaning ring to move in a reciprocating mode in the spiral direction of the heat exchange pipe. The heat exchanger has the effect of reducing impurities in waste water adhered to the outer side wall of the exchanger so as to prolong the service life of the heat exchange pipe.

The present invention discloses a thrombus-clearing nanorobot, and the technical scheme thereof mainly includes a spindle-shaped robot body; a threaded spiral coil is arranged at the end of the robot body; an elastic connecting rod is arranged in the spiral coil; the two ends of the connecting rod are respectively connected to the robot body and a magnetic ball; the robot body is made of magnetic material; the line between the robot body and the magnetic ball is the central axis, the robot body above the central axis is the N pole and the magnetic ball is the S pole, the robot body below the central axis is the S pole and the magnetic ball is the N pole, and the spiral coil is a double spiral coil; a connecting ring is arranged at the end of the robot body; the end face of the connecting ring is fixedly connected to the spiral coil; the connecting rod is made of metal tantalum; the cross section of the spiral coil is flat; the present invention has the beneficial effects of clearing thrombus, being convenient to use and easy to recover.

The invention discloses a water-cooling heat dissipation device for cooling environment-friendly materials, and belongs to the field of water-cooling heat dissipation devices.The water-cooling heat dissipation device comprises a mixing barrel and a water tank, a cooling-water machine is installed on the water tank, a stirring rod and a plurality of spiral coils are arranged in the mixing barrel and the water tank respectively, and the top ends and the bottom ends of the spiral coils are communicated with a water conveying pipe and a water return pipe respectively; the other end of the water conveying pipe is communicated and connected with the water inlet end of the cooling-water machine, a water outlet main pipe is arranged at the water outlet end of the cooling-water machine, a plurality of water outlet branch pipes are arranged on the water outlet main pipe in a split-flow mode, and the water outlet branch pipes and the water return pipes are communicated and connected with an elastic water pipe through flange plates respectively; each jacket is provided with a cold water bag and an elastic connecting sleeve, the elastic connecting sleeves among the jackets are detachably connected, and the cold water bags in the jackets are respectively communicated and connected with the elastic water pipe.

The finned coil pipe type gas boiler comprises a boiler body, finned heat exchange pipes and a combustor, the boiler body comprises a combustion barrel, a heat exchange barrel and a connecting barrel, and the finned heat exchange pipes are arranged in the combustion barrel and the heat exchange barrel correspondingly; the fin type heat exchange pipe is a single-circle or multi-circle fin type coil pipe; the fin type coil pipe comprises a spiral coil pipe and a fin plate fixed on the spiral coil pipe; and a combustion rod of the combustor extends into the combustion barrel. The finned coil type gas boiler can effectively improve the heat conversion efficiency, reduce the equipment size and facilitate installation and transportation.

The utility model discloses an electromagnetic induction structure which comprises a magnet assembly and a spiral coil and is characterized in that the magnet assembly is coaxially arranged outside or inside the spiral coil to provide a radial single-polarity magnetic field for the spiral coil, the magnetic induction line of the magnetic field is perpendicular to a coil wire, and the magnet assembly and the spiral coil move relatively. A radial single-pole magnetic ring for radiation magnetization or a common magnet with the same polarity facing the coil and arranged annularly is adopted as a magnet assembly to provide a radial single-polarity magnetic field for the spiral coil, and when the electromagnetic induction structure is applied to a generator, electric energy output is larger than that of a voice coil motor; when being applied to a motor, the motor can do linear / arc / circular motion, and the stroke is longer than that of a voice coil motor while the output power is ensured.

The invention provides a biodegradable color master batch and a production line air cooling device thereof, and belongs to the field of air cooling devices.The biodegradable color master batch production line air cooling device is composed of a cooling box, a U-shaped support, a cooling mechanism, an air cooling mechanism, a shaking mechanism and a conveying mechanism. Due to the special structure of the spiral conveyor, the biodegradable color master batches can be continuously turned over in the conveying process, so that the contact between the biodegradable color master batches and cold air is improved, cooling is accelerated, the fan blades are driven to rotate through rotation of the mounting shaft, wind can be generated when the fan blades rotate, the wind generated by the fan blades can flow upwards, and the cooling effect is improved. Cold liquid flows in the spiral coil pipe, so that air becomes cold air after being in contact with the spiral coil pipe, the cold air can penetrate through the screening drum to enter the screening drum to be in contact with the biodegradable color master batch, and meanwhile, the cold air flowing upwards can penetrate through the exhaust hole A;

The disclosed technology includes a magnetic location sensor which may comprise first and second spiral coils that can be disposed on a planar substrate. The first and second spiral coils may be disposed about respective first and second center axes, wherein each of the first and second coils can be configured to generate a voltage when subjected to a magnetic field. The magnetic location sensor may also comprise a high-magnetic-permeability planar member that can be disposed near one of the first and second spiral coils. The high-magnetic-permeability planar member can be disposed on the magnetic location sensor such that if the planar substrate is wrapped around a cylindrical substrate, the high-magnetic-permeability planar member may be disposed on an intersection of the first and second center axes.

The utility model discloses an improved spiral type coil heater for oil field heating furnace belongs to heating furnace technical field, including heater main part, and the heater main part includes feed header, discharge header and spiral heat exchange pipe, and spiral heat exchange pipe is connected in feed header and discharge header, shockproof subassembly, shockproof subassembly includes first fixed plate, second fixed plate, plug -in spare and fixed bolt, and spiral heat exchange pipe is placed between first fixed plate and second fixed plate, and plug -in spare is inserted in first fixed plate, and fixed bolt is inserted in second fixed plate, and fixed bolt is connected with plug -in spare thread, the utility model discloses, be provided with shockproof subassembly in the material flow process, and spiral heat exchange pipe vibrates with the flow of material along high frequency, and the plug -in board between first fixed plate and second fixed plate strengthens the intensity of spiral heat exchange pipe, and then eliminates the vibration of spiral heat exchange pipe to a certain extent, to prevent the stress fatigue of spiral heat exchange pipe after the vibration of production time.

The invention relates to a high-temperature carbon particle cooling device and system, the device comprises a particle channel and at least one heat exchange channel arranged in the particle channel, and the heat exchange channel is arranged along the axial direction of the particle channel. The heat exchange channel comprises at least one heat exchange coil pipe which is coiled in a spiral shape. When the heat exchange channel comprises a plurality of heat exchange coil pipes, the heat exchange coil pipes are coaxially arranged, the heat exchange coil pipes are connected in parallel or in series or in series-parallel connection in a mixed mode, and the connecting positions of the heat exchange coil pipes are located outside the channel where the high-temperature carbon particles flow. The cooling device recovers waste heat of the high-temperature carbon particles in a high-efficiency and high-grade mode, so that the requirement for other energy sources is reduced, and the comprehensive utilization rate of the energy sources is improved. The joints of the heat exchange coil pipes are all located outside the channels where the particles flow, so that the joints are prevented from being damaged due to direct long-term contact with the high-temperature carbon particles, and the situation of heat exchange medium leakage caused by the quality problem of the joints in the channels where the high-temperature carbon particles flow is avoided.

To provide an apparatus for heating molten steel in a tundish in continuous casting of steel.SOLUTION: In an airtight tundish, a resistance heating element made of graphite is arranged above the molten steel surface so as to closely face the molten steel surface in an inert atmosphere. A spiral coil is formed on the disc-shaped heating element. The temperature of the heating element is raised to about 2000°C by AC energization to radiate and heat the space in the tundish. On the other hand, induction heating and induction stirring occur immediately below the molten steel surface below the coil. The power loss due to the self-inductance contributes to heat generation, and a power efficiency of 90% is obtained. A ceramic coating is applied to the upper surface of the heating element to suppress upward radiation and to improve the durability of the inner wall of the refractory. The trouble that slag and molten steel are stuck to the inner wall is eliminated by suitable upward radiation.SELECTED DRAWING: Figure 1

The utility model discloses a stator coil of a non-contact electromagnetic torque sensor, which relates to the field of non-contact electromagnetic torque sensors, solves the problem that the magnetic field of the existing coil is unstable, and adopts the following scheme: the stator coil comprises a first base layer and a second base layer which are opposite in position, coil penetrating grooves are formed in the first base layer and the second base layer, each coil penetrating groove is composed of three sets of spiral coil grooves in the outer side and two sets of spiral coil grooves in the inner side, and coil penetrating holes located between the spiral coil grooves in the inner side and the outer side of each coil penetrating groove are further formed in the first base layer and the second base layer; according to the stator coil of the non-contact electromagnetic torque sensor, through arrangement of the components on the first base layer and the second base layer, the number of turns of coils on different layers is reduced, and interference between the coils is reduced; and the field intensity anisotropic magnetic field of the coils on the same layer can generate superposition consumption, so that the interference of the anisotropic magnetic field is further reduced, and the uniformity and the stability of the magnetic field are improved.

The utility model provides a water-bath constant-temperature heating device for enzyme, relates to the technical field of heating devices, and solves the technical problems that the temperature is easy to fluctuate due to water replenishing of the conventional water-bath constant-temperature device, and unnecessary energy consumption is increased due to preheating in advance. The water tank is used for providing constant-temperature water, the control center is used for controlling the water level and the water temperature of the water tank, the water bath is also provided with a spiral coil used for uniformly replenishing water and a baffle used for blocking and shunting the replenished water, and the baffle is also rotationally provided with a rotating shaft used for stirring. The material mixing degree and the heat dispersion degree of the system can be rapidly improved through water replenishing of the spiral coil pipe, flow division of the baffles and two-side stirring.