13 results about "High field strength" patented technology

A device, system and process involve conducting electroporation of microvesicles or exosomes or other target structures in a microfluidic arrangement at pressures that exceed atmospheric pressure. Single as well as multiple flow configurations can be employed. In some cases, the system and its operation are computer-controlled for partial or complete automation.

The invention relates to a real-time magnetic resonance guided head gamma beam stereotactic radiotherapy system, which comprises a magnet module, a gamma beam module, a treatment bed module and a source body driving assembly, the magnet module comprises a base, a left vertical yoke and a right vertical yoke which are arranged on two sides of the base, and a left magnetic pole and a right magnetic pole which are respectively arranged on the inner side of the left vertical yoke and the inner side of the right vertical yoke; the left magnetic pole and the right magnetic pole are arranged in parallel; a Y-axis linear guide rail is arranged on the base; the gamma beam module comprises a shielding body assembly, a source body assembly and a collimation body assembly, wherein the source body assembly and the collimation body assembly are arranged in the shielding body assembly and are coaxially nested. The shielding body assembly is fixedly connected with the left vertical yoke and the right vertical yoke; the treatment bed module is arranged on the Y-axis linear guide rail, and the source body driving assembly is connected with the source body assembly. According to the invention, clear imaging of cranial soft tissue in a high field intensity environment can be realized, gamma rays are guided to carry out real-time image-guided stereotactic radiotherapy, and the radiotherapy precision is improved.

The present application relates to cold-rolled rolling liquid processing technical field, specifically disclose a kind of cold-rolled finishing liquid recovery device, including sequentially communicating high field strength magnetic separation device, cyclone air floatation device and circulating liquid storage tank along the flow direction of finishing waste liquid;High field strength magnetic separation device is used to adsorb magnetic metal powder in waste liquid;Cyclone air floatation device includes cyclone cylinder, dissolved air pump and micro-bubble generator, for removing suspended solids and oil substances;Circulating liquid storage tank stores finishing liquid after purification, and its liquid outlet is connected to finishing machine liquid supply pipeline;The present application adopts two-stage classification treatment of "magnetic separation and cyclone air floatation", first remove magnetic particles to protect subsequent equipment, then through micro-bubble adhesion and scraping non-magnetic contaminants, effectively avoid the problem that single magnetic filter is easy to block and backwash frequently, while significantly reducing the overall replacement frequency and operating cost of finishing liquid, simple structure, stable operation, suitable for cold-rolled finishing liquid on-line recycling and recycling.

This invention discloses a high-voltage resistivity testing device for samples. The small sample to be tested consists of an insulating cardboard with a pre-cut opening in the middle, a small sample of a pre-sized size, and polyimide tape. The small sample is attached to the opening of the insulating cardboard with the polyimide tape, allowing for volume resistivity measurement even on small samples. The insulating cardboard increases the creepage distance and reduces leakage current. The spring ensures full contact between the protective electrode and the measuring electrode and the small sample. The current flowing through the sample is exactly the current flowing on the electrode in contact with the small sample. The full contact between the protective electrode and the insulating cardboard effectively conducts surface current. This invention solves the technical problem of traditional solid insulating material resistivity testing methods, which are prone to creepage and even surface discharge under high voltage, high field strength, and small sample size conditions, affecting the accuracy of the test.

The present disclosure generally relates to particle manipulation and separation technologies, and more particularly relates to a method and a system for sorting particles Further, the method may include receiving, by a particle sorting system (100), a quantity of fluid includes particles with motility. Further, the method may include generating, by a rotating magnetic field using coils. Furthermore, the method may include disposing a cuvette. The cuvette may include suspension of the particles in deionized water vertically within the region of the decreasing rotating magnetic field strength, with a highest field strength at the bottom of the cuvette. Further, the method may include applying the rotating magnetic field at a fixed frequency to actuate the particles. Further, method may include maintaining the actuation until the particles reach respective equilibrium positions. Further, the method may include sorting the suspension into samples by extracting portions at heights within the cuvette.

The utility model relates to a polygonal coil with an adjustable central high-field-intensity area, which comprises a plurality of conductive electrode discs and two-connection pole pieces, each electrode disc is of a plate-shaped polygonal annular structure, the surface of each electrode disc is coated with an insulating coating with a preset length in the circumferential direction, one end, adjacent to an insulating part, of each electrode disc is an input end, and the other end of each electrode disc is an output end; the electrode discs are arranged in a stacked mode, the output end of the upper electrode disc is electrically connected with the input end of the lower electrode disc to form a closed power-on loop, the two-connection pole piece is of an 8-shaped structure and comprises a first electrode disc and a second electrode disc, the output end of the first electrode disc is electrically connected with the output end of the second electrode disc, and the output end of the second electrode disc is electrically connected with the output end of the second electrode disc. On the first electrode disc and the second electrode disc which are arranged in a stacked mode, the size of a magnetic field overlapping area can be accurately adjusted through the polygonal and annular electrode disc pole pieces.

The invention discloses a production method of a high-efficiency low-resistance nano filter material, and belongs to the technical field of preparation of environment-friendly filter materials. According to the production method, a high-field-intensity electret and gradient water are introduced in a melt-blowing stage, so that nano fibers are electrified and are in a dry-outside and wet-inside state, a four-layer gradient water-containing structure is constructed, and the size stability of the filter material is improved; then laser spot welding is performed by utilizing water content difference, a micro-melting point is only formed in an area with relatively low water content, interlayers are fixed, large-area melting blockage is avoided, the peeling strength is improved, finally, stress is eliminated through gradient drying, the heat shrinkage rate of the filter material under the working condition of rated temperature is ensured to be less than or equal to 0.5% through gradient drying, and ultraviolet laser is used for scanning and singeing on a dust facing surface; the self-hemming structure is formed, the surface contact angle is reduced, the interlayer peel strength is high, and the filter material is not easy to deform and layer after long-term use, so that the aim of integrating low resistance, high efficiency and easy ash removal of the filter material is fulfilled, the energy consumption saving effect of the filter material is improved, and the service life of the filter material is prolonged.

The application relates to an inspection unmanned plane, characterized in that the inspection unmanned plane comprises a body, a protection box connected with the body, and a field strength tester connected with the protection box and used for judging the distance from the unmanned plane to a tower and a line. The protection box is connected with the body, the field strength tester is connected with the protection box, the field strength tester is protected through the protection box, and the use safety of the field strength tester is improved. The field strength tester is used for sensing the magnetic field strength generated by high-voltage towers and lines around the inspection unmanned plane, so as to judge the distance from the unmanned plane body to the tower or the high-voltage line, facilitate route planning and accurate obstacle avoidance, and complete power channel inspection work. The above-mentioned inspection unmanned plane is safe to use, simple in structure, can accurately avoid obstacles, and is suitable for various harsh working environments.

This invention relates to a modeling method for the insulation electric field of a flexible press-fit IGBT sub-module considering nonlinear conductivity characteristics. Belonging to the field of power electronic device insulation design technology, it solves the problem that traditional linear models cannot accurately simulate electric field distortion and Joule heat loss under high temperature and high field strength conditions. The technical solution uses an ion-jumping conductivity model and Arrhenius law to fit the nonlinear conductivity parameters of polyimide, silicone rubber, and polyetheretherketone (PEEK), establishing a two-dimensional finite element model. A non-ideal step voltage condition is input, and electrothermal boundary conditions are applied to calculate the evolution of the electric field distribution from the turn-off transient to the steady state. This achieves dynamic and accurate simulation of electric field stress under electrothermal coupling, revealing the law of maximum field strength migration from the three bonding points to the terminal edge, providing key theoretical support for the insulation optimization of flexible press-fit IGBTs.

The invention provides high-temperature vacuum equipment for purifying high-purity manganese metal, and relates to the field of vacuum equipment.The high-temperature vacuum equipment comprises a high-temperature vacuum furnace, the middle of the high-temperature vacuum furnace is rotationally connected with a furnace barrel, the side wall of the high-temperature vacuum furnace is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with the furnace barrel; the device further comprises vacuumizing equipment, an energy absorption mechanism, a magnetic field assembly, an auxiliary gas injection connector, a condensed gas exhaust connector and a condensation assembly. When the high-temperature vacuum furnace is used for purification, the furnace barrel can be driven to rotate through the driving motor, so that raw materials in the furnace barrel are turned over, uniform heating is facilitated, the purification efficiency is improved, distillation steam is generated in the high-altitude vacuum furnace, part of iron and nickel impurities contained in the steam are mixed, and the final purification quality can be influenced if the steam is directly discharged for condensation; therefore, the semi-trapezoidal coil assembly and the arc-shaped coil assembly form a gradient magnetic field to drive steam to flow along the gradient direction of the magnetic field (from high field intensity to low field intensity), so that the steam is discharged along the shunt pipe and enters a condensation area.

The invention relates to the technical field of mineral processing, and discloses a red mud iron mineral enrichment and separation integrated method based on a high-field-intensity flat plate magnetic separator, which comprises the following steps: S1, red mud pretreatment and ore pulp preparation; s2, roughing enrichment is conducted through a high-field-intensity flat plate magnetic separator; s3, fine selection and quality improvement of magnetic products; s4, scavenging and recycling non-magnetic products; and S5, product treatment and index optimization. According to the method, the high-field-intensity flat plate magnetic separator is adopted, pretreatment and separation parameters are optimized according to the characteristics of the red mud, the recovery efficiency and the separation effect of weakly-magnetic iron minerals are remarkably improved, efficient enrichment is achieved, the technological process is simple and flexible, and the separation efficiency is maximized through the technological design of integrating roughing, concentration and scavenging; the balance of the recovery rate and the grade is realized, the operation parameters (such as magnetic field intensity, flow velocity and section number) of each section can be flexibly adjusted according to the properties (such as iron content, granularity and mineral composition) of raw ore, the adaptability is strong, and the separation efficiency is high.

The invention discloses a large-aperture high-field-intensity gradient superconducting magnet, and relates to the technical field of superconducting application. The superconducting magnet specifically comprises a superconducting magnet winding and a magnet framework. The superconducting magnet winding comprises a first forward coil, a second forward coil, a third forward coil and a first reverse coil, wherein the first forward coil, the second forward coil and the third forward coil are coaxially nested, and the first reverse coil and the first forward coil are coaxially wound and are opposite in current direction. The first forward coil is wound at the lower end of the first coil framework, and the first reverse coil is wound at the upper end. The upper end faces of the first forward coil, the second forward coil and the third forward coil are located on the same horizontal plane. The problem that an existing large-aperture magnet is insufficient in field intensity and gradient and overlarge in internal stress is solved, high field intensity and high gradient are achieved through specific coil arrangement, and the stress failure risk is reduced.

The application discloses a high-field-strength permanent magnet magnetic circuit for room-temperature magnetic refrigeration, which comprises a low-carbon steel rod, a magnetic ring and a magnetic yoke, the center of the magnetic ring is provided with an intermediate gap, the low-carbon steel rod is located at the intermediate gap, the low-carbon steel rod and the intermediate gap are located on the same axis, and the magnetic yoke is arranged outside the magnetic ring; the magnetic field at the intermediate gap is a non-uniform magnetic field, and the magnetic induction intensity value continuously changes between 0 and a set value. The application further discloses a use method of the high-field-strength permanent magnet magnetic circuit for room-temperature magnetic refrigeration. The application provides a non-uniform magnetic field at the intermediate gap, which is beneficial to the full application of the magnetic heat effect.