326 results about "Outer coil" patented technology

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 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.

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.

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 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.

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 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 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.

The present invention provides a stator and an electric motor. The stator (12) has a plurality of coils (24). The plurality of coils (24) includes a plurality of outer coils (24X) provided on the root side of the teeth (22) and a plurality of inner coils (24Y) provided on the front end side of the teeth (22). The plurality of outer coils (24X) and the plurality of inner coils (24Y) are alternately arranged along the circumferential direction of the stator core (20). The coil windings of the plurality of outer coils (24X) are in a non-fixed state, and the coil windings of the plurality of inner coils (24Y) are in a fixed state.

The utility model discloses an outer half-tube heat exchanger reaction kettle, which comprises a reaction kettle assembly, an outer half-tube heat exchanger and an outer half-tube heat exchanger, a movable assembly, the movable assembly comprises a driving motor connected to one side of the top end of the reaction kettle body, a rotating shaft connected to an output shaft of the driving motor, a driving gear connected to the top end of the rotating shaft, and a driven gear meshed with the outer end of the driving gear; the supporting rod is connected to the interior of the driven gear; and the supporting disc is connected to the top end of the supporting rod. According to the utility model, the movable assembly is arranged, so that the problems that the outer coil pipe is easily damaged when the outer coil pipe collides with the outside due to the fact that the outer coil pipe is directly exposed to the outside when the existing outer half-pipe heat exchanger reaction kettle is used, a medium in the outer coil pipe flows out, the heat exchange effect cannot be achieved, and the service life of the outer half-pipe heat exchanger reaction kettle is prolonged are solved. And the problem of loss of the medium is solved.

The invention provides a working mode reconfigurable power division chip circuit structure and a working method thereof. The circuit structure comprises an input port tap, two output port taps, a three-wire coupling spiral coil, a grounding pole and two control switches. One input port tap is connected with a middle coil of the three-wire coupling spiral coil to serve as an incident signal input port; the two output port taps are connected with two ends of an outer side coil of the three-wire coupling spiral coil to serve as output signal output ports; the two ends of the grounding pole are connected between the tail ends of the middle coils of the three-wire coupling spiral coils through the control switches respectively. The two control switches are used for switching the working mode of the working mode reconfigurable power division chip circuit structure. According to the power divider, the connection state of the three-wire coupling spiral coil and the grounding pole is changed by switching the on-off state of the control switch, switching of two working modes of power division and balun is achieved in the same compact circuit structure, and efficient utilization of the chip size is achieved.

The invention belongs to the technical field of motors, and particularly relates to a stator assembly with a surrounding winding structure, a manufacturing method and a motor. The stator assembly with the surrounding type winding structure comprises a stator iron core and a winding, a plurality of inner grooves are uniformly formed in the inner side face of the stator core in the circumferential direction, a plurality of outer grooves are uniformly formed in the outer side face of the stator core in the circumferential direction, and the inner grooves and the outer grooves are in one-to-one correspondence in the radial direction to form a group of winding grooves; a plurality of coils in the winding are wound in the inner groove and the outer groove in a surrounding mode, at least one circle of coil is arranged in any one winding groove, the inner circle of the coil is located in the inner groove in the axial direction, the outer circle of the coil is located in the outer groove in the axial direction, and the two ends, connected with the inner circle and the outer circle, of the coil are located on the two axial end faces of the stator iron core respectively. By optimizing the shape and layout of the winding, reducing the height of the winding, improving the utilization rate of the stator core and improving the heat dissipation performance, the size of the motor is remarkably reduced under the condition that the same power output is ensured.

The embodiment of the invention provides a low-power-consumption self-suction thermocouple electromagnetic valve, a control system and an intelligent stove, and relates to the field of stoves. Comprising a shell, a valve seat, a sealing gasket, a movable iron core and a static iron core, the valve seat is fixedly connected to the bottom of the shell, and the sealing gasket is arranged above the shell; the lower end of the movable iron core movably penetrates into the shell, and the upper end of the movable iron core is connected with the sealing gasket and sleeved with a spring. The spring is propped between the sealing gasket and the shell; the static iron core is fixed in the shell and located below the movable iron core. An inner coil is wound outside the static iron core; an outer coil is wound on the inner wall of the shell and corresponds to the outer sides of the movable iron core and the static iron core, and a preset distance is formed between the outer coil and the inner coil. According to the invention, extremely low power consumption and automatic firepower adjustment of flameout safety protection of the whole system of the intelligent stove can be realized, and the requirements of safety and low power consumption are fully compatible.

Disclosed is an electromechanical actuator comprising an electric motor, a coupling element and a monostable clutch (23a). The clutch (23a) comprises a central shaft (43), a mobile member (44) and a coil (45), which generates a magnetic field when this coil is powered, so as to cause the member (44) to move relative to the shaft (43). The shaft (43) comprises a core (46), a ring gear (47) and a ring (52), arranged between the core (46) and the ring gear (47). The core (46) and the ring gear (47) are in contact with the member (44) only in a second position, so as to rotate the shaft (43) as a result of grip. Furthermore, the supply to the coil (45) is implemented continuously, only while the member (44) is moving between a first position and the second position, and while the member (44) is being held in the second position.

The application provides a dust-free heat dissipation micro motor, and belongs to the technical field of micro motors.The dust-free heat dissipation micro motor comprises a shell, an opening is arranged on one side of the shell, and a rotor component is rotatable in the interior of the shell.The rotor component is composed of an even number of winding parts, the even number of winding parts are all fixed on a rotating disc, a heat exchange chamber is arranged in the interior of the winding part, two heat exchange pipelines penetrating through the rotating disc are arranged on the heat exchange chamber, air can enter the interior of the heat exchange chamber from one of the heat exchange pipelines and be discharged from the other heat exchange pipeline when the rotating disc rotates, air can enter the interior of the heat exchange chamber from one of the heat exchange pipelines when the rotating disc rotates, the pressure in the interior of the heat exchange chamber is increased, the air in the interior of the heat exchange chamber is extruded from the other heat exchange pipeline, so that the heat exchange purpose is achieved, and in addition, the coil is wound on the winding part, so that the heat generated by the coil can be cooled, and the service life of the coil is improved.

The utility model relates to an instant water heater heating body with an energy storage function. The instant water heater heating body is characterized by comprising a heating pipe, an inner coil pipe, a heat conduction inner container, a water outlet pipe, a heat conduction layer, an outer disc, a water inlet pipe, a connecting pipe, a shell and a heat preservation layer. The inner coil pipe is coiled on the outer side of the heating pipe; a water outlet of the inner coil pipe is communicated with the water outlet pipe; the heat conduction layer wraps the outer side of the heat conduction inner container, the outer coil pipe is arranged in the heat conduction layer and is coiled on the outer side of the inner coil pipe, a gap between the heat conduction inner container and the outer coil pipe is filled with the heat conduction layer, and a water outlet of the outer coil pipe is communicated with a water inlet of the inner coil pipe through a connecting pipe; the thermal insulation layer wraps the outer side of the heat conduction layer, and the shell wraps the outer side of the thermal insulation layer. The instant water heater has the advantages that under the condition that the power of the instant water heater is limited, in winter or in cold weather, the water yield of hot water is enough, the temperature reaches a set value of a user, the heating pipe does not directly heat water, the pipe explosion phenomenon caused by incrustation is avoided, the service life is long, and the after-sales maintenance cost is low.

The utility model discloses a Hall thruster ceramic channel heat dissipation structure, and relates to the field of Hall thruster heat dissipation. The problem that the temperature of the ceramic wall face of a discharge channel of an existing Hall thruster is too high is solved. The device comprises a ceramic discharge channel, an annular heat pipe, an inner magnetic pole, a bottom plate, an inner magnetic screen, an outer magnetic pole, an outer coil frame and an outer magnetic screen. The heat pipe is installed between the ceramic channel and the inner magnetic screen, one end of the heat pipe is directly contacted with the wall surface of the ceramic channel, and the other end is directly contacted with the bottom plate. According to the utility model, the temperature of the ceramic wall surface is conducted to the bottom plate by using the principle of phase change in the heat pipe, and then the bottom plate directly radiates and transfers the heat to space, thereby achieving the purpose of reducing the temperature of the ceramic wall surface.

A design method for a double-layer, double-plane self-shielded coil significantly reduces magnetic field crosstalk and shielding barrel coupling effects, improving magnetic field stability and space utilization. It is suitable for coil design and integration applications in high-precision magnetic field control systems. A target field model is established based on the target magnetic field distribution, and magnetic flux constraints ensure that the external magnetic field of the coil approaches zero, thus achieving self-shielding characteristics. Subsequently, a stream function discretization method is used to obtain the coil winding path, and a mapping relationship and current scaling factor between the inner and outer coil layers are established to ensure that the double-layer coil effectively cancels out the external magnetic field while generating the target magnetic field. To further optimize magnetic field uniformity and energy distribution, this invention introduces a tornado optimization algorithm for global optimization of the coil distribution, thereby obtaining a coil structure with high uniformity and high attenuation performance. Finally, finite element simulation is performed on the coil shape to analyze whether its uniformity and attenuation meet the design requirements.

To provide an oil-immersed transformer with a simple structure that can suppress deformation. [Solution] The oil-filled transformer 1 according to the embodiment comprises a plurality of coils 2 composed of inner coils 12a and outer coils 12b arranged concentrically, an iron core 3 having legs 13 on which the coils 2 are mounted, an upper fitting 4 provided on the upper end side of the iron core 3, a lower fitting 5 provided on the lower end side of the iron core 3, and an inner circumferential support member 6 provided on the inner circumferential side of the coil 2 with its upper end supported by the upper fitting 4 and its lower end supported by the lower fitting 5, and which supports the coil 2 from the inner circumferential side and suppresses deformation by distributing and transmitting the mechanical force generated in the coil 2 to the upper fitting 4 and the lower fitting 5, wherein the upper end of the inner circumferential support member 6 is fixed to the upper fitting 4 in a range below the upper horizontal line (L10), and the lower end is fixed to the lower fitting 5 in a range above the lower horizontal line (L11).

Embodiments of the present disclosure provide a loudspeaker including a magnetic circuit assembly and a coil assembly. At least a portion of the coil assembly is provided in a magnetic gap formed by the magnetic circuit assembly, and the coil assembly is electrified to drive a vibrating member to vibrate to produce sound. The coil assembly includes a coil support and a coil. The coil support has an extended end extending toward the magnetic gap, and the extended end has a first step structure. The coil includes an outer coil and an inner coil. The outer coil and the inner coil form a second step structure in a direction close to the coil support. The first step structure and the second step structure are fitted to each other so that the coil is fixedly mounted on the coil support.

The utility model relates to the technical field of reaction kettles, in particular to an efficient curing agent reaction kettle. According to the technical scheme, the reaction kettle is characterized by comprising a shell, a reaction kettle body is included, a stirring system is arranged on the reaction kettle body, an outer coil pipe is arranged on the outer side of the reaction kettle body, a heat source inlet is formed in the bottom end of the outer coil pipe, a heat source outlet is formed in one side of the outer layer of the outer coil pipe, and supporting angle steel is arranged on one side of the inner wall of the reaction kettle body; connecting angle steel is arranged at the end of the supporting angle steel in the direction parallel to the reaction kettle body, one end of the connecting angle steel is arranged on the reaction kettle body, an inner coil pipe is arranged on the connecting angle steel, an inlet is connected to the upper end of the inner coil pipe, an outlet is formed in the lower end of the inner coil pipe, and a plurality of temperature control mechanisms are further arranged on the connecting angle steel. The utility model provides an efficient curing agent reaction kettle, in order to realize uniform temperature of reaction materials in the reaction kettle and improve the operation efficiency and quality, the efficient curing agent reaction kettle can ensure the heating efficiency and uniform temperature of the reaction materials according to the temperature requirement of a production process, and is beneficial to proceeding of chemical reaction; and in addition, the structure is simple and compact, and the operation is convenient.

According to the high-sensitivity array type abrasive particle detection device, an excitation module is composed of an inner excitation coil, an outer excitation coil and an excitation source, the inner excitation coil and the outer excitation coil are wound in the same direction, and synchronous current is applied to the inner excitation coil and the outer excitation coil, so that a zero-magnetic-flux detection area is constructed between the inner excitation coil and the outer excitation coil; the detection module is a detection array composed of a plurality of induction coils, each induction coil is located in a zero magnetic flux area, when no to-be-detected object passes through the detection area, the induction voltage of the induction coils is zero, and when the to-be-detected object passes through the detection area, the magnetization and eddy current effect of the metal abrasive particles breaks the magnetic field balance, which is represented as the voltage change of the induction coils; the detection channel is located in an inner hole of the induction coil and used for ensuring that the to-be-detected oil sample passes through the detection area. The detection device provided by the invention can realize high-precision rapid detection of the metal abrasive particles in the oil, and is of great significance to fault diagnosis of rotating and reciprocating machinery.