224 results about "Magnetic tube" patented technology

An insertion type eddy current flaw detection probe that is capable of more accurately detecting flaws in magnetic tubes is provided. A method for inspecting magnetic tubes for flaws with high accuracy is also provided. A eddy current flaw detection probe comprises a cylindrical yoke (1), a plurality of detection coils (5) disposed around the central portion of the cylindrical yoke in the direction of a cylindrical axis thereof, first and second inner excitation coils (6) disposed on both sides of the plurality of detection coils in the direction of the cylindrical axis, and first and second permanent magnets (3, 4) disposed around the yoke on both sides of the first and second excitation coils in the direction of the cylindrical axis so that the direction of magnetizations thereof are parallel to the radial direction of the yoke and magnetic poles on the cylindrical yoke side thereof are different from each other.

The invention relates to a method for obtaining a nuclear magnetic resonance two-dimensional phase-sensitive J spectrum. The method comprises the following steps: putting a to-be-tested sample into a nuclear magnetic tube and conveying the nuclear magnetic tube loaded with the to-be-tested sample into a detection chamber of a magnetic resonance spectrometer; invoking a conventional one-dimensional hydrogen spectrum pulse sequence to acquire a one-dimensional hydrogen spectrum, obtaining signal peak distribution and spectrum width information, and measuring the non-selective 90-degree radio frequency pulse width; inputting a compiled two-dimensional phase-sensitive J spectrum pulse sequence into the nuclear magnetic resonance spectrometer, opening a chiro pulse weak selection layer gradient combination module and a two-dimensional phase-sensitive J spectrum pulse sequence sampling module of the two-dimensional phase-sensitive J spectrum pulse sequence; setting two-dimensional phase-sensitive J spectrum pulse sequence experiment parameters, inspecting that the experiment parameters are set correctly, and then executing data sampling; after the completion of data sampling, performing corresponding data splicing and two-dimensional Fourier transform to obtain a two-dimensional frequency spectrum containing J coupling information and chemical displacement information; performing two-dimensional phase-sensitive treatment on the obtained two-dimensional frequency spectrum to obtain the two-dimensional phase-sensitive J spectrum.

The invention discloses a method for detecting illegal cooking oil and relates to the method for detecting fat. The method comprises the steps of: sampling, weighing a liquid oil sample to be measured, dissolving the liquid oil sample by a deuterated solvent, transferring the solution to a nuclear magnetic tube, and collecting hydrogen spectrum and carbon spectrum data of the sample through a high-field nuclear magnetic resonance spectrometer; analyzing data, leading out a nuclear magnetic spectrogram, judging normal edible oil and drainage oil by comparison of a specific fingerprint area, and refining the illegal oil just the same as the fingerprint area; distinguishing by concrete fatty acid constituents, carrying out aggregate analysis on concrete data of total hydrogen quantity of saturated fatty acids, concrete content of various fatty acids, relative content of oxide and relative content of free acid in different edible oil obtained by data analysis, analyzing the spectrogram by a stoichiometry method to obtain a result, collecting the spectrogram of an oil product by NMR (nuclear magnetic resonance), and then comprehensively distinguishing the illegal cooking oil according to each constituent in the oil product by a plurality of indexes.

The invention discloses a micro electromagnetic valve which comprises an electromagnetic coil, a movable iron core, a valve body and a plunger tube, wherein the electromagnetic coil comprises a magnetizer, a flux sleeve, a magnetic shield and a coil; the upper end of the movable iron core is sleeved with a spring, the lower end of the movable iron core is sleeved with a diaphragm, the cost of parts is reduced by removing a fixing iron core. When the movable iron core is absorbed, the top end of the movable iron core does not contact with the inner bottom of the plunger tube; the noise is removed; and the production cost is reduced. A sealing chamber is formed by the plunger tube and the valve body; the plunger tube and the valve are sealed by a sealing ring; the valve body is connected with the plunger tube in a riveting way, so that complexes of the threaded connection are reduced. Copper foam and scrap iron generated by threaded connection are avoided. The electromagnetic valve coil is connected with the plunger tube by a snap spring; the valve body and the electromagnetic valve coil are tightly resisted, so that the angle of the electromagnetic coil can be freely adjusted as required without shaking the adjusted angle, therefore, greater space can be selected on connection; and the micro electromagnetic valve is more flexible to use.

The invention provides a one-dimensional permanent magnetic nano-material, in which hard magnetic tubes are coated with soft magnetic wires and a preparation method thereof. The material has a composite structure that hard magnetic nano-tubes prepared from hard magnetic phase FePt or CoPt alloy are coated with soft magnetic nano-wires prepared from soft magnetic phase pure metals including Fe, Co and Ni or binary and ternary alloy, wherein, the diameter of the one-dimensional permanent magnetic nano-material is 10nm to 220nm; the diameter of the soft magnetic phase nano-wires is 4nm to 60nm; and the wall thickness of the hard magnetic phase nano-tubes is 3nm to 80nm. The preparation method of the material comprises the following steps: firstly, preparing the hard magnetic alloy nano-tubes in a porous anodic alumina template by using the template wetting method; and then, growing the soft magnetic nano-wires in the nano-tubes by using the electrochemical deposition method. The invention has the advantages that the size of the one-dimensional permanent magnetic nano-material is controllable and the preparation method is simple.

The invention relates to a dual-fluid magnetization foam dustfall system and method, and belongs to dustfall systems and methods for a coal mine. The dustfall system comprises a liquid pipeline and an air pipeline with certain pressure, wherein the liquid pipeline is composed of foaming liquid, and the air pipeline is composed of a pressure ventilation pipe under the shaft. The air pipeline is connected to a magnetization foaming device for foaming, the other pipeline is connected to a dual-fluid foam nozzle and used for spraying foam. The magnetization foaming device comprises a turbulent flow pipe and a shell. The turbulent flow pipe comprises a solution medium cavity, a medium mixing cavity and a communication hole in the flowing direction of a medium, and the solution medium cavity is communicated with the medium mixing cavity through the communication hole. The outer wall of the solution medium cavity of the turbulent flow pipe is wound by magnetic tubes or magnetized metal tubes, and a circle of magnets are arranged in the shell. Hemispheric spoilers provided with turbulent flow holes are evenly distributed in the outlet end of the medium mixing cavity. According to the dual-fluid magnetization foam dustfall method, the dustfall capacity of foam is improved through foam magnetization, and the jetting effect of the foam is improved by using the dual-fluid foam nozzle, so that dustfall efficiency is improved.

The invention discloses a heating unit for an electromagnetic heating type instant water heater. A heating portion is connected with a cooling portion through a joint pipeline. The heating portion comprises water flow passages, an integral aluminum casting layer and inductive heating tubes, the water flow passages and the inductive heating tubes are combined through the integral aluminum casting layer by means of aluminum casting, the integral aluminum casting layer is in an integrally hollow cylindrical structure, and the water flow passages surround the inductive heating tubes. The cooling portion comprises a magnetic tube supporting column, a coil support tube, outer end covers, a cooling water inlet nozzle and a cooling water outlet nozzle, the outer end covers are provided with through holes and mounted at two ends of the integral aluminum casting layer, the coil support tube is arranged on the outer end covers through the through holes and connected with the integral aluminum casting layer, the magnetic tube supporting column is mounted in the coil support tube, and two ends of the coil support tube are provided with the cooling water inlet nozzle and the cooling water outlet nozzle.

A multi-functional beauty synergy machine and a liquid used in the machine and a utilization method of the same comprise a main machine as well as a liquid cup, an ultrasonic generator, a negative-ion generator and a heating plate which are disposed inside the main body, wherein the main body is communicated with a strong-magnetic tube. The multi-functional beauty synergy machine and the liquid used in the machine and the utilization method of the same are characterized in that the strong-magnetic tube is communicated above the liquid cup; the ultrasonic generator is disposed below the liquid cup; the negative-ion generator is communicated with the liquid cup by a tube; the heating plate is disposed in a pipeline which is communicated with the liquid cup; and a fan is disposed corresponding at a pipeline hole. The negative-ion magnetized multi-functional beauty synergy machine provided by the invention has multiple functions, wherein the liquid cup inside is also used for storage of different liquids, the different liquids are injected into the liquid cup and atomized by the ultrasonic generator, the liquid fog is blown out via the strong-magnetic tube through a warm wind containing high-concentration negative ions and then become negative-ion magnetized fog containing the liquid, and then fumigation hypnogenesis, hairdressing and beauty and desensitization can be realized with coordination of relevant accessories.

The invention discloses a manual magnetic solid extractor. The manual magnetic solid extractor comprises a gun body, a gun body head, an operating rod, a magnetic bar, a magnetic tube and a magnetic tube sleeve. The manual magnetic solid extractor is simple and convenient to use, is particularly suitable for separating and transferring magnetic materials in a 5 to 50mL of tubular vessel and is applicable to the research fields of immune cell separation, proteomics separation, immobilized enzyme, biomechanical engineering and the like.

The invention discloses a high-performanceradialorientation rare-earth permanent magnetic tube and a thermal-deformationforming method thereof, and belongs to the technical field of rare-earth permanent magnetic seamless tube manufacture. A raw-material component of the permanent magnetic tube is RE-(Fe,Co)-B, wherein RE is or one or more ofyttrium or lanthanide elements which are represented by Nd, and one or more other transition metal elements can be added at the same time; a horizontal loading horizontal-type rotation double-motion extrusion device of which a connecting angle alpha is greater than or equal to zero degree and smaller than or equal to 90 degrees is adopted, firstly, hot pressing is conducted on rapid-quenching magnetic powder to form a full-densityisotropousmagnet, then, horizontal positive shuntextrusion is conducted on the full-densityisotropousmagnet to form the radialorientation permanent magnetic tube, the tube length is greater than 50 mm, and the tube diameter is adjustable in a range of 0-150 mm.The horizontal extrusion technology overcomes the spatial height limit of a vertical device, the long-range rheological property improves the magnetism and microstructure uniformity of the permanent magnetic tube, the permanent magnetic tube of which the length, diameter and wall thickness can be freely adjusted in a large size range can be prepared, which is beneficial for the batch production of the radialorientation rare-earth permanent magnetic tube. Through conducting saw cutting on the permanent magnetic tube, nanometer rare-earth permanent rings, magnetic tiles and ceramic chips can be obtained.

A fixing unit for fixing a toner image onto a sheet passing between a first element and a second element pressed against the first element includes a looped coil surface formed with a coil so that the coil surface generates a magnetic field for induction-heating the first element, the coil surface including an inner edge defining an opening region; an upright wall disposed inside the opening region, an opening being formed in the upright wall; a center core disposed along the opening region, the center core including a conductive shaft and a magnetic tube configured to at least partially cover the conductive shaft; and a nonconductive cap inserted into the opening, the nonconductive cap partially covering the conductive shaft to electrically insulate the coil from the conductive shaft.

The disclosed fluid magnetization tube comprises: a magnetic tube with axial-magnetized magnetic rings with opposite polarity between neighbor ones, space rings of non-ferric-magnetic material and an annular tube; a high-permeability guide magnetic tube coaxial with the magnetic tube and owned a flow channel, or another magnetic tube with two magnetic rings in one section with same height and opposite magnetized direction; some members with straight or curve axis for location, fixing and guiding flow; two cove boards on both ends contained arc channels of flat shape or cylinder face to locate the tubes on both radial and axial directions. The opposite magnetization device comprises a plurality of magnetization tubes parallel inserted in the shell, and two end cap grooves to connect near tubes in series or parallel or mixture. The magnetization system uses said magnetization device and normal pump and power gear device for fluid cycle magnetization, which has high efficiency, simple structure, variable forms, small volume, light weight, and low cost.

The invention relates to a hard magnetic linear nano coaxial cable wrapped by a soft magnetic tube and a preparation method thereof, belonging to the technical field of nana materials preparation. Thecoaxial cable is in a double-layer coaxial composite structure and comprises an internal linear nano magnetic core and an external tubular material, wherein the internal linear magnetic core consistsof FePt, CoPt or FeCoPt one-dimensional hard magnetic phase nano wire which is externally wrapped by Fe, Co Ni metal or alloy soft magnetic nano tube to form a FeCoNi / FeCoPt interchange spring nano coaxial cable. The preparation method comprises the following steps: firstly, preparing a soft magnetic alloy nano tube in a porous anode alumina template by adopting a template wetting method; and secondly, growing the nano wire in the nano tube by adopting an electrochemical deposition method. The invention has the advantages that the nano permanent magnet material in the true sense is obtained,and the preparation method is simple.

The invention provides a bird's nest identification method. The bird's nest identification method is characterized by adopting the nuclear magnetic resonance for detecting. The bird's nest identification method comprises the following steps: samples to be identified are pre-processed: the samples to be identified are grinded to fine powder; 1% of phosphoric acid water solution containing more than 10% of deuterium is added in the fine powder for implementing the water-bath heating in boiled water and centrifugating after cooling; supernate is taken into a 5 mm of nuclear magnetic tube; the nuclear magnetic tube is sealed; technical parameters are set; 1H-NMR spectrograms of the samples are acquired through a nuclear magnetic resonance spectrometer; the authenticity of bird's nests is judged through comparing the bird's nests with the 1H-NMR spectrograms of the samples to be identified. The method is simple and easily operated; the measurement of the analyzed samples has no need of exact precision; the pre-processing can be synchronously implemented for one batch of the samples; after the bird's nests are hydrolyzed, the nuclear magnetic detection is implemented for mixtures to obtain nuclear magnetic resonance hydrogen spectrums; the bird's nest identification method has the advantages of high precision, high speed, short sampling time and simple data analysis.

The invention discloses a method for detecting authenticity of peanut oil, and relates to a method for detecting vegetable oil. The method comprises the following steps of: measuring a liquid oil sample to be detected; dissolving the sample by using a deuterated solvent, and transferring the solution to a nuclear magnetic tube for later detection; acquiring data of 1H hydrogen spectrum and 13C carbon spectrum of the sample through a nuclear magnetic resonance spectrometer; and analyzing the data, namely carrying out integral analysis on the data through nuclear magnetic spectrogram fingerprint peak comparison analysis of the peanut oil by virtue of R software, calculating the relative content of components of each main fatty acid in the sample to obtain the proportion of oxidative products and free fatty acids when the content of the total fatty acid is 100 percent, and obtaining an identification result according to multiple indexes. The method is easy to operate, accurate in measurement and high in repeatability; through nondestructive detection of the sample, the same sample can be used for repeated measurement or other analysis and test, and the measurement result is not influenced by skills and judgment of operators; and the method is suitable for quick detection of the peanut oil.

A liner motor based on radical magnetic tubes includes: a dynamicer (mover, QDZ) and a stator (STA), the structure of the stator (STA) is: a stator magnetic tube (SCG) is nested into the inner wall of a pure iron tube (DTG), the stator magnetic tube (SCG) provides a radial magnetic field, a stator tube (DZGD) is formed within the stator magnetic tube (SCG), the dynamicer can travel in the stator tube; the dynamicer iron core is a tube of a radial magnetic field and installed on a tubular coil skeleton, on which winding the dynamicer coil to form the dynamicer main body; the sliders (HDZ) are installed on both ends of the dynamicer main body load.

The invention provides a method for identifying true and false beef and mutton. The method comprises the following steps: (1) immersing a meat sample to be detected in a solvent, and extracting; (2) separating the solvent from the meat sample to be detected to form an upper water layer and a lower chloroform layer, adding anhydrous sodium sulfate into the lower chloroform layer, shaking until the solution is clear, and absorbing residual water of the upper water layer by the anhydrous sodium sulfate; (3) transferring the dried chloroform layer to a nuclear magnetic tube for detection; (4) acquiring carbon NMR (nuclear magnetic resonance) data of the sample by a high-field NMR spectrometer, and exporting a nuclear magnetic spectrum diagram; (5) performing operations of the steps (1)-(4) on different types of animal meat, and establishing a carbon NMR fingerprint database of the different animal meat; and (6) determining the type of animal meat according to the data comparison of a characteristic fingerprint peak in a range of 172.0ppm-174.0ppm and a known animal carbon NMR fingerprint data through chemical shift. The method is simple and quick in operation and accurate in measurement, the pretreatment of the sample is simple, the result can be obtained by data fingerprint analysis, and data acquisition can be completed in any high-field NMR spectrometer.

The invention discloses a medium-frequency heating bar and a structure thereof. The medium-frequency heating bar comprises a magnetic core bar, a copper coil, an insulation and heat-insulating layer, an iron magnetic tube, a magnetic ring, a PTC temperature-sensitive resistor and a sealing end, wherein the magnetic core bar, the copper coil and the insulation and heat-insulating layer are arranged in the iron magnetic tube, the magnetic ring and the sealing end perform sealing, and the built-in heating structure is formed. The heating bar is arranged in a heated object. When medium-frequency current flows in the copper coil, the iron magnetic tube generates heat, and therefore the heated object in contact with the outer wall of the iron magnetic tube is heated. The medium-frequency heating bar is small in energy consumption, high in efficiency, good in insulation sealing performance, convenient to control, long in service life, safer and applicable to various occasions needing the heating bar to perform heating.

A linear motor comprises an exciter that includes a plurality of permanent magnets in a shaft, an armature that surrounds the exciter and includes a plurality of coils, and a frame that houses the armature, wherein the armature houses the plurality of coils in a magnetic tube which has a linear opening.

The invention discloses a method for identifying olive oil and relates to identification of vegetable oil. The method comprises the following steps of: filling a liquid oil sample to be detected into a nuclear magnetic tube; adding a deuterated solvent into the nuclear magnetic tube to dissolve the sample, and mixing uniformly for later detection; acquiring data of 1H hydrogen spectrum and 13C carbon spectrum of the sample through a high-field nuclear magnetic resonance spectrometer; and performing data analysis through chemical shift information and peak area information of a nuclear magnetic spectrogram, calculating the relative contents of components of each main fatty acid in the sample, and obtaining an identification result through comprehensive judgment according to multiple indexes. The magnetic resonance identification method is easy to operate, accurate in measurement and high in repeatability; through nondestructive detection of the sample, the same sample can be used for repeated measurement or other analysis and test, and the measurement result is not influence by skills and judgment of operators; and the method is suitable for quick authenticity detection of the olive oil.

The invention discloses a nuclear magnetic tube cleaning device, which comprises a cleaning bottle with a bottle cap, a circular rubber plate and a pressurization device, wherein the circular rubber plate and the pressurization device are positioned in the cleaning bottle; a cleaning fluid inlet is formed in the upper part of the sidewall of the cleaning bottle, and a waste fluid outlet is formed in the lower part of the sidewall of the cleaning bottle; at least one through hole is formed in the circular rubber plate; a ground circular hole is formed in the bottle cap; the pressurization device is closely connected with the cleaning bottle through the circular hole. The cleaning device is simple in structure, small in size, high in cleaning speed and time-saving, and has good effects, a cleaning process is simple, multiple nuclear magnetic tubes can be simultaneously cleaned at a time; materials used for the device are common devices in a laboratory, so that compared with a special cleaner, the cleaning device is low in cost, easy to assemble and convenient to use, can be assembled when being required to be used, and can be disassembled immediately after being used.

A spiral type self power generation flashlight comprises a light tube and a light cap connected with the light tube. Light sources are arranged in the light cap, a first spiral groove which is hollow is formed in the outer periphery of the light tube, a rotatable magnetic tube is arranged in the light tube, and a second spiral groove which is not hollow is formed in the outer periphery of the magnetic tube and arranged opposite to the first spiral groove. The first spiral groove and the second spiral groove are the same in rotating direction, shape and size. A coil conductor is arranged in the magnetic tube, and a sleeve is arranged on the light tube in a sleeved mode and can move back and forth in the axial direction of the light tube. At least on clamping pin is arranged on the outer periphery of the sleeve, penetrates through the first spiral groove and can move back and forth in the radial direction of the sleeve. A controller and a rechargeable battery are arranged in the light tube, wherein the controller is electrically connected with the coil conductor, and the rechargeable battery is electrically connected with the controller. The spiral sliding structure is adopted for generating power, and the sleeve can drive the magnetic tube to rotate to generate the power in the process of sliding upwards and downwards along the axis of the light tube, so that power generation efficiency is remarkably enhanced, a large amount of electric energy can be rapidly generated and stored in the rechargeable battery, and then the lighting time of the light sources is prolonged.

The invention discloses a two-position three-way solenoid valve. The two-position three-way solenoid valve includes a magnetic isolation tube, a fixed iron core and a pump body arranged in the magnetic isolation tube in an inserted mode, a pump core arranged in the magnetic isolation tube and placed between the fixed iron core and the pump body, and a winding coil; a pump core spring is arranged between the pump core and the fixed iron core, and the pump core can be driven to compress the pump core spring when the winding coil is energized; and a first one-way valve is arranged at the end, facing the pump body, of the pump core, a second one-way valve is arranged at the end, facing the pump core, of the pump body, and the first one-way valve and / or the second one-way check valve include mounting plates and diaphragms arranged on the mounting plates, wherein the diaphragms are of umbrella structures. The space required for assembling the one-way valve in the two-position three-way solenoid valve is reduced, the noise of the two- position three-way solenoid valve during operation is reduced, and stability of the pressure and flow rate of the two-position three-way solenoid valve during operation is improved.

The invention relates to a generating device using a bar magnet to carry out the motion of cutting magnetic lines in a cylinder with magnetic field to generate electricity. The generating device comprises the cylinder and the bar magnet which are externally winded with wire coils, and a magnetic tube internally provided with a magnet; the bar magnet is opposite to the homogenous pole of the magnet, the top of the cylinder is provided with another magnetic tube internally provided with a magnet, and the magnet is opposite to the homogenous pole of the bar magnet. When the bar magnet in the cylinder is in the level condition or in the heeling condition with various angles, the piston movement can be conducted to generate electricity. The generating device has the advantages of high generating efficiency, smaller energy loss, more extensive application scope and simple structure.

The invention belongs to substance extraction equipment, in particular relates to an active constituent extractor for a natural substance, and aims to solve the defects of low active constituent extraction efficiency, long extraction time and high cost in the prior art. A small liquid box (5) is sleeved in a large liquid box (4); a circulation pump (1) is arranged on the lower part of the large liquid box (4); an inlet of the circulation pump (1) is connected with the bottom of the large liquid box (4); an outlet of the circulation pump (1) is connected with the upper part of the large liquid box (4); a temperature sensor (3) is arranged in the large liquid box (4); an ultrasonic amplitude transformer (6) and an ultrasonic transducer (7) are arranged on the upper parts of the large liquid box (4) and the small liquid box (5); a microwave generator (10) and an ultrasonic generator (9) are arranged on the upper part of a stander (11); and one end of the microwave magnetic tube (8) is connected with the microwave generator (10), and the other end of the microwave magnetic tube (8) is embedded on the side wall of the large liquid box (4). The active constituent extractor for the natural substance has the advantages that: by adopting a circulation liquid flow, microwave and ultrasonic combined extraction technology, the extraction rate is high, and the energy consumption is low.

The invention relates to a nuclear magnetic resonance space resolved spectrum method used for realizing real-time monitoring on emulsion phase separation process, and belongs to the field of nuclear magnetic resonance spectroscopy detection. The nuclear magnetic resonance space resolved spectrum method comprises following steps: water and oil are mixed at a volume ratio of 1:1, a certain amount of an emulsifier is added, and an obtained mixture is subjected to full vibrating mixing using a vortex vibrating device; the mixture is delivered into a nuclear magnetic tube, and a pre-compiled rapid space resolved NMR spectrum impulse sequence is input into a nuclear magnetic resonance spectrometer; setting of impulse sequence parameters and sampling parameters is carried out, and data acquisition is carried out; after sampling, related data post-processing is carried out, high resolution <1>H NMR spectrums of different space positions are extracted, integral computation of oil signal intensity in the high resolution <1>H NMR spectrums is carried out, and then sample stable layering time and emulsion layer thickness are obtained via analyzing the evolution laws of the single intensity on different space positions. According to the nuclear magnetic resonance space resolved spectrum method, the adopted impulse sequence is a rapid chemical shift imaging method based on local uniform; and high resolution one-dimensional (1D) <1>H NMR spectrums of nonuniform emulsion systems at different space positions can be obtained via the nuclear magnetic resonance space resolved spectrum method.

The present invention provides high strength and high efficiency fluid magnetizing tube, magnetizing device and magnetizing system, and belongs to the field of fluid magnetizing technology. The fluid magnetizing tube includes a magnetic tube, a magnetic conducting tube, and a locating and guiding element to form one or several fluid channels and has straight or curved axis. The magnetic tube includes a magnetic ring, an isolating ring of non-ferromagnetic material and a duct; the magnetic conducting tube is high permeability duct or one other magnetic tube; and the end plates possess fluid channel. The magnetizing device includes a casing and several magnetizing tubes connected serially and / or in parallel. The magnetizing system has magnetizing device, conventional pump and power device to perform circular fluid magnetizing. The present invention has high strength axial and radial magnetic field and high fluid magnetizing efficiency.

The invention discloses a sensor for capturing the flowing out of molten slag in casting steal from steel ladle. The process of manufacturing the sensor is as follows. There are spiral shaped windingwrapped in insulating magnetic tube on channel of circular ring frame with I bar shape. Heat insulating material is filled around said windings, and fire clay is filled in the channel. After drying and shaping the semi-finished product, the high temperature cable with double core is welded to windings and the other end of cable is connected to the linker box on the shell of the steel container. The invented sensor only contains one spiral shaped winding and minimum two lead out wires so it possesses features of simple structure and lower cost. The sensor also can be used in metallurgy industry.