7results about How to "Increase field strength" patented technology

The reaction furnace comprises a furnace body, a furnace cover, an electric connecting piece and an electromagnetic shielding sleeve, the furnace body is hollow, the end portion of the furnace body in the first direction is open to form an opening, the furnace cover is connected to the end portion of the furnace body in the first direction and blocks the opening, and the electromagnetic shielding sleeve is connected with the furnace cover. A closed reaction cavity is defined by the furnace cover and the furnace body; wherein one end, in the first direction, of the electric connecting piece is used for being electrically connected with a graphite boat, and the other end of the electric connecting piece penetrates through the furnace cover, extends out of the reaction cavity and is used for being electrically connected with a radio frequency power supply; the electromagnetic shielding sleeve is arranged in the reaction cavity, sleeves the electric connecting piece and is used for preventing the electric connecting piece from radiating energy to the furnace body; and a gap is formed between the outer wall of the electric connecting piece and the inner wall of the electromagnetic shielding sleeve. Utilization of output power of the radio frequency power supply is improved, waste is reduced, and energy consumption is reduced.

The utility model discloses a high-torque-density magnetic transmission speed reducer and a built-in motor of a power-assisted bicycle, and belongs to the power-assisted technology of bicycles. A magnetic transmission speed reducer and a motor in the prior art have the defects of large torque fluctuation, low transmission efficiency, easy magnetic field mismatch, uncontrollable eddy current loss and the like, the magnetic transmission speed reducer comprises a first stator, a first rotor and a modulation ring, the modulation ring is located between the first rotor and the first stator, a first air gap is kept between the modulation ring and the first stator, and a second air gap is kept between the modulation ring and the second stator. A second air gap is kept between the modulation ring and the first rotor, the modulation ring comprises modulation teeth, the total number of the modulation teeth is p2, the number of pole pairs of the first stator magnetic ring is p3, the number of pole pairs of the first rotor magnetic ring is p1, p1 = p2-p3, a magnetic field of the first air gap is coupled with a magnetic field of the second air gap, and rotation from the first rotor is output in a speed reduction mode through the modulation ring. The motor part and the reduction gear realize transmission through magnetic force, thereby improving the motor operation efficiency and reducing the overall noise of the motor.

The utility model discloses a magnetic arc suitable for weakly magnetic mineral separation, which comprises a feeding pipe, a rotary drum rotationally arranged relative to the feeding pipe, a fixed magnetic steel component positioned outside the rotary drum, and a fan-shaped collecting hopper positioned in the rotary drum and connected with the feeding pipe. A plurality of water spraying holes are formed in the front surface of the backwashing water pipe; and the water spraying holes are arranged over against the inner wall of the rotary drum. Compared with the prior art, energy is saved, consumption is reduced, discharging of the rotary drum is more convenient and easier, discharging of materials is more complete under the common action of the ore discharging water pipe and the concentrate scraper, a Halbach array is adopted in the magnetic system structure, higher field intensity can be generated, and the Halbach array magnetic system structure can maximize the magnetic field of the permanent magnet. And a higher induced magnetic field is generated. And more energy loss does not need to be provided. A higher magnetic field means that the enrichment rate of magnetic iron in lean ore can be maximized.

The utility model discloses a shielding assembly of a voltage transformer, which belongs to the technical field of voltage transformers, and comprises a first shielding net and a second shielding net which are embedded in epoxy resin, the first shielding net comprises a first main body with an annular structure, an installation terminal is arranged outside the first main body, and the installation terminal is connected with the first main body through a connecting rod; a first mounting insert for fixing a primary terminal of the voltage transformer is arranged in the mounting terminal; the second shielding net comprises a cylindrical second main body, and a second mounting insert is arranged at one end of the second main body; wherein the first main body is sleeved on the outer side of the second main body. Through the arrangement of the shielding assembly, the problems that in the working process of the voltage transformer, a relatively obvious discharge phenomenon is generated due to non-uniform field intensity among the primary terminal, the resin and the mounting insert, so that the partial discharge of a product is relatively large for a long time, the dielectric insulation strength is influenced, the dielectric breakdown is caused, and the service life of the product is prolonged are solved. And the voltage transformer and related equipment are damaged.

The invention discloses a low-impedance miniaturized tuning fork wafer and a manufacturing method thereof. The low-impedance miniaturized tuning fork wafer comprises a vibrating arm, a base part, a supporting arm, a connecting electrode groove and a groove, two vibrating arms are symmetrically arranged on the base part relative to the central axis of the base part, and two supporting arms are symmetrically arranged on the base part on the two sides of the vibrating arms; grooves are formed in the upper sides and the lower sides of the two vibrating arms in the length direction of the vibrating arms, the grooves in the upper sides and the lower sides are the same in depth and do not penetrate through the vibrating arms, and connecting electrode grooves are formed in the vibrating arms around the grooves. The side walls of the two sides, in the length direction, of the groove are arc-shaped curved surfaces protruding in the opposite directions. According to the tuning fork wafer, the side wall in the length direction of the groove is arc-shaped, the area of the side wall of the groove is increased, the area of the electrode in the groove is increased, the field intensity generated by the electrode is enhanced due to the increase of the area of the electrode, the impedance of the tuning fork wafer is effectively reduced in principle, and the tuning fork wafer has a smaller size under the same impedance; the tuning fork wafer is suitable for the field requirements of smaller-size tuning fork wafers.

The application relates to the technical field of graphene, in particular to a graphene material and a preparation method and a preparation device thereof, the preparation method comprises the following steps: preparing an electrolysis system, including an anode, a cathode and an electrolyte, a first extension direction of the anode intersects with a second extension direction of the cathode; graphite is used as the anode to perform an electrolysis reaction, and the graphite is driven to move along the first extension direction to adjust the distance between the anode and the cathode; as the distance between the anode and the cathode decreases, the current density on the surface of the graphite gradually increases; the graphite is first subjected to electrochemical intercalation and then subjected to electrolytic exfoliation to obtain a graphene dispersion liquid; the graphene dispersion liquid is subjected to purification treatment to obtain graphene. In the preparation method, the electrochemical intercalation and the electrolytic exfoliation reaction on the graphite are performed in sequence, the prepared graphene material has a high few-layer (carbon layer number is less than or equal to 5) rate, and the types and contents of oxygen-containing functional groups can be controlled.

This application discloses a voltage equalization enclosure and a gas insulation device for conductor connection in the field of power equipment technology. The voltage equalization enclosure is used for the interconnection of busbars and includes an end face and a smooth outer surface formed by a side face with rotational symmetry. The outer surface is a conductor. The side face and the end face are smoothly transitioned. The end face has more than one slot, and all slots are connected at the geometric center of the side face. The slot is used for the insertion and overlapping of busbar connectors. The side face has fastener mounting holes in a direction perpendicular to the overlapping surface of the busbar connectors. After fastening, the fasteners are submerged in the side face. The outline of the slot on the end face is a smooth curve. This solution solves the problem that the insulation performance of the existing conductor connection structure is not suitable for environmentally friendly insulating gases with weak insulation performance. It achieves the beneficial effects of uniform electric field, improved insulation performance between parts, and the use of multiple conductor structures.