184results about How to "Structural refinement" patented technology

The invention relates to a kind of cold-rolled hot-galvanized complex phase steel. Chemical components of the cold-rolled hot-galvanized complex phase steel comprise, by weight, 0.05-0.13% of C, 0.1-0.5% of Si, 1.5-2.5% of Mn, less than or equal to 0.015% of P, less than or equal to 0.015% of S, 0.1-0.6% of Al, 0.2-0.6% of Cr, 0.1-0.5% of Mo, 0.01-0.06% of Nb, 0.01-0.06% of Ti, and the balance Feand inevitable impurities. The invention further relates to a preparation method of the cold-rolled hot-galvanized complex phase steel. The preparation method comprises the following steps of castingmolten steel into a steel billet; conducting hot rolling on the steel billet to obtain a hot-rolled plate and conducting cold rolling on the hot-rolled plate to obtain a cold-hardened steel strip; conducting continuous galvanizing and annealing process treatment on the cold-hardened steel strip to obtain a finished cold-rolled hot-galvanized complex phase steel product. The bending performance ofthe cold-rolled hot-galvanized complex phase steel is improved on the basis of meeting the requirement for strength.

The invention discloses a psychological stress training system and method.The psychological stress training system comprises a plurality of training terminals and a pulse oximeter connected with the training terminals.The terminals are further connected with a helmet.The helmet is of a closed structure, and a screen is arranged before the eye part of the helmet and connected with the terminals through interfaces.The terminals are connected with a master control server through a network to form a network of the psychological stress training system.The master control server provides training management for the terminals through the network, and the terminals send detected human body reaction information to the master control server through the network and conduct autonomous training according to the task arrangement and materials of the master control server.The system is refined in structure, and easy and convenient to install and use; according to the method, a scientific stress training mode is adopted, the stress levels of trainers in stress training are collected according to a base line, an analyzing basis is provided for further training through file storage, and the training scientificity is ensured.

The invention discloses an organic electroluminescent device including a substrate, an organic electroluminescent apparatus, and an external electric driving unit. The organic electroluminescent device comprises at least two organic light-emitting layers. Each of the organic light-emitting layers at least comprises a first organic light-emitting layer and a second organic light-emitting layer which emit a first intrinsic peak wavelength and a second intrinsic peak wavelength respectively; the external electric driving unit is connected with a first electrode and a second electrode; when an external electric driving unit provides a first or second working current density for the apparatus, the apparatus can emit a first or second spectrum and generate a first or second light-emitting region, and the regions are overlapped; wherein the first and second spectrum comprise first and second intrinsic peak wavelengths, and ratios of the first and second intrinsic peak wavelengths are different under different working currents; the first intrinsic peak wavelength is less than or equal to 680nm, and the second intrinsic peak wavelength is greater than 680nm and less than or equal to 2000nm.The device integrates multiple light-emitting layers of near-infrared light and visible light and can emit light of different colors under different current densities.

The present invention relates to a face-beautifying method for using cold and hot air to fumigate and steam face and its equipment. It includes the following steps: 1) cleaning face; 2) making face be in atomized and humidified cold air environment with zero deg.C-10 deg.C at least for 10 min.; 3) making the face be restored in the atomized humidified hot air environment with 25 deg.C-45 deg.C, and making the face feel the fever; and 4) repeating steps of 2 and 3. The described face-beautifying sauna equipment is formed from mask, air inlet tube, air-spraying nozzle, eye visible cover, oral mask and flexibility regulating and fixing band.

The invention discloses metal three-dimensional additive manufacturing apparatus and method. The apparatus includes: a jet flow nozzle internally provided with an electric conductor, a film forming nozzle communicated with a high molecular polymer supply source, a gas ejection nozzle communicated with a hot gas source, a cleaning nozzle communicated with a deionized water source, a cathode substrate, an electro-deposition power supply, and an electrolyte cycle filter apparatus. In the apparatus, with scanning movement of the nozzles, the film forming nozzle stacks two rows of film layers on the cathode substrate, the gas ejection nozzle and the cleaning nozzle can rapidly clean and dry the surface of the films, and the jet flow nozzle ejects electrolyte to the zone between the two rows offilm layers on the cathode substrate, thus electro-depositing the metal layer in the localization manner; by increasing the height of the nozzles, the stack film layers and metal layers are added continuously, thus achieving the additive manufacturing of a three-dimensional metal member. The apparatus has simple structure and high efficiency, and can shape the three-dimensional metal member havinghigh compactness and precision.

The invention relates to a titanium alloy laser cladding surface reinforcing method which comprises the following steps: mixing the following components by weight: 50-100% of Co42 cobalt-based self-fluxing alloy powder, 0-50% of B4C0, 0-50% of SiC, 0-39% of TiN, 0-1.5% of Y2O and 0-1.5% of CeO2, uniformly blending the mixture powder into paste by using a sodium silicate solution, uniformly coating the paste mixture powder on the surface of a titanium alloy, keeping the coating uniform in thickness, drying in air naturally, and performing laser cladding on the coating on the surface of the titanium alloy. By the adoption of the method provided by the invention, the microstructure of a cladding layer can be improved, and the hardness and the wear-resistance of the cladding layer can be further improved.

The invention provides an engineering robot for environmental monitoring, environmental emergency handling and environmental remediation. The engineering robot comprises a machine vision device, a self-alarm device, a remote control device, a GPS real-time positioning device, an air quality detection device, a soil underground water sampling detection and in-situ remediation device, a risk identification device, an environmental expert system, a data processing center, a robot body and a mobile device, wherein the machine vision device, the self-alarm device, the remote control device, the GPS real-time positioning device, the air quality detection device, the soil underground water sampling detection and in-situ remediation device, the risk identification device, the environmental expert system and the mobile device are all connected with the data processing center, and the soil underground water sampling detection and in-situ remediation device is further provided with an automatic drill stem filling device. The engineering robot integrates the multiple advanced technologies of soil underground water environmental risk detection and in-situ remediation, rapid environmental quality detection, machine vision, remote control, GPS real-time positioning, risk identification, the environmental expert system and the like, the structure is more simplified, and more comprehensive functions are achieved.

The invention discloses an indoor positioning system and method based on MNL probability identification. The system comprises an MNL positioning model establishing module, a wireless network information acquiring module and a wireless network data comparison module, wherein the MNL positioning model establishing module is used for establishing an MNL positioning model, fingerprint wireless information corresponding to all fingerprint points is used for generating the probability-based MNL discrete model, the model is described with a series of random functions and is written into a center database, the wireless network data comparison module is used for comparing wireless network information of set electronic equipment with the MNL positioning model and the fingerprint wireless information, and then combinatorial computing is carried out on a series of fingerprint point coordinates with the maximum probability value to judge whether the set electronic equipment is located at the position where a fingerprint point with the largest similarity is located. The indoor positioning system and method based on the MNL probability identification can improve the accuracy of indoor positioning, and especially guarantees the stability and interference resistance of indoor positioning under the condition that the WIFI signal is lost and the environment changes suddenly.

The invention relates to soybean sauce back sprinkling equipment, belonging to the field of brewing equipment. The soybean sauce back sprinkling equipment is characterized in that a main pump is arranged on a main pipe, the main pipe is communicated with the middle part of a back sprinkling pipe in a rotating shaft hinged manner, back sprinkling nozzles are arranged at two sides of the back sprinkling pipe respectively, the bus of the back sprinkling nozzle at one side of the back sprinkling pipe and a vertical surface form an alpha included angle, the bus of the back sprinkling nozzle at the other side of the back sprinkling pipe and the vertical surface form an alpha included angle, the main pipe stretches into the lower part of a soybean sauce fermentation tank, the main pump pumps raw soybean sauce and the raw soybean sauce is uniformly sprayed on the surface of a soy sauce paste mash by the back sprinkling pipe and the back sprinkling nozzles, and during back sprinkling, the contact area of the raw soybean sauce and the air is increased, beneficial yeasts in air enter the soy sauce paste mash, liquor and lipid yield can be effectively promoted, and the fragrance of the soybean sauce is rich; an assistant pipe stretches into a saline water tank, an assistant pump pumps saline water and sprays the saline water through the back sprinkling pipe and the back sprinkling nozzles, saline water packing auger equipment in the traditional process is removed, and saline water can be uniformly distributed through once spraying; and mixing and back sprinkling are carried out at one station by one set of equipment, and the soybean sauce back sprinkling equipment has high efficiency and high power.

The invention provides a method for nitridation and crystallization of metastable-state samarium-iron alloy. The method comprises the steps of performing rapid cooling and sudden condensation on molten-state samarium-iron alloy to obtain the metastable-state samarium-iron alloy; performing nitridation and initial crystallization on the metastable-state samarium-iron alloy to obtain nitrided samarium-iron alloy; and performing annealing and crystallization on the nitrided samarium-iron alloy to obtain a samarium-iron nitrogen permanent-magnet material. During nitridation of a metastable-state material, a large amount of rheological units existing in the metastable-state alloy are beneficial for diffusion and homogenization of nitrogen atoms, the nitridation content of the alloy can be remarkably increased, and the nitrogen atoms are uniformly distributed; crystallization is completed before decomposition of Sm<2>Fe<17>N<x>, nitride formation is reduced or prevented, and the metastable-state samarium-iron alloy has a refined microstructure; and moreover, according to the method provided by the invention, the nitridation speed is fast, and the nitridation efficiency of improving a samarium-iron nitrogen magnetic material by the samarium-iron alloy is improved.

The invention relates to the field of thrusters and discloses a universal thruster. The universal thruster comprises a shell (2) and a propeller (1). A joint bearing (3) is installed in the shell (2), the propeller (1) is installed on a spherical inner ring (31) of the joint bearing (3), a pushing guide rod (4) is installed on the spherical inner ring (31) and connected with a pushing motor (5), and the joint bearing (3) drives the propeller (1) to swing under the pushing function of the pushing guide rod (4). Steering of the universal thruster does not depend on steerage generated when water flow flows past a control surface but depends on vector thrust force which is more direct, so the steering radius is very small, and high steering torque can be generated even under a dead slow condition. The universal thruster has the advantage of being high in steerage and is particularly suitable for military unmanned underwater vehicles.

The invention discloses an expansion crack water-proofing agent. The expansion crack water-proofing agent comprises the following raw materials in percentage by mass: 5-30% of an anti-crack swelling agent, 20-40% of a microsphere, 25-45% of gangue, 0.1-8% of a modified basalt fiber and 1-5% of an additive. The anti-crack swelling agent and the modified basalt fiber can play the roles of superposition, compensation and shrinkage in concrete, and have the functions of double crack resistance and waterproofing; the modified basalt fiber is better combined with the concrete, so that the structurecompactness of the concrete is increased without influencing the concrete construction performance.

The invention relates to an easy-cutting zinc-copper-base wrought zinc alloy and a preparation method thereof. The easy-cutting zinc-copper-base wrought zinc alloy is characterized by comprising the following components in percentage by weight: 0.5-10% of copper, 0.1-3.5% of bismuth, 0.001-0.1% of titanium, at most 0.01% of inevitable impurity and the balance of zinc. The alloy fusion casting technique comprises the following steps: smelting in a line frequency furnace, intermediate frequency or reverberatory furnace, and carrying out continuous casting or metal mold casting to obtain a casting blank; and carrying out hot extrusion at 180-400 DEG C, and finally carrying out cold drawing to obtain various sizes of rods, wires and section products. The obtained products can be used in the fields of automatic lathes, drill presses, instrument lathes and the like. Compared with the prior art, the alloy provided by the invention has the characteristics of favorable cutting property, moderate mechanical properties and the like, and is easy for processing and electroplating.

The invention discloses an annealing method of a rare earth-iron-aluminum alloy conductor material for cables, wherein the annealing is carried out under the conditions of 280-360DEG C and 3-30h or 361-420DEG C and 2-20h; and the rare earth iron-aluminum alloy material comprises the following components in percentage by weight: 0.20-1.5wt / % of Fe, 0.005-5wt / % of rare earth element, other elements less than 0.5wt / % and the balance of A1. After smelting, casting, hot rolling, cold drawing and twisting, an aluminum alloy conductor core is obtained; and after annealing treatment, the aluminum alloy conductor core has excellent electric property, extension property and flexibility and is suitable for wire and cable conductor cores.

The invention discloses a double-seal internally-closed thimble vacuum valve, belonging to the technical field of vacuum heat pipes. The vacuum valve comprises a nut (1), a shell (2) with an internal screw thread and an external screw thread, a thimble (3) with an external screw thread hexagon, a thimble plug (4) and a red copper gasket (6) padded below the nut (1), wherein the thimble plug (4) is arranged on the bottom end in the shell (2) and is provided with an aspirating hole (5); the thimble (3) is connected with the thimble plug (4) by frapping a pipe socket close to the lower end of the thimble, and thus, the tip of the thimble plug (4) can be in arbitrary orientation and does not deviate due to screw thread space when the thimble (3) is screwed down. The invention has the beneficial effect of small structure and can stably keep vacuum degree for a long term in different vacuum cavity medium environments.

The invention relates to a duplex stainless steel twin-roller thin strip casting and rolling production process, which includes the following steps: (1) lifting molten steel with qualified composition to a large ladle rotary table; (2) injecting molten steel into the tundish; (3) twin-roller Casting and rolling; (4) Hot rolling of strip; (5) Cooling of strip and cutting off the head and tail; (6) Coiling of strip. The invention directly produces duplex stainless steel thin strips through twin-roll casting and rolling, simplifying the hot rolling process and avoiding edge cracks and peeling defects caused by poor thermoplasticity of duplex stainless steel during hot rolling in traditional processes, as well as difficulties in producing thin-specification products. And other issues. Through the combination of double-roll casting and hot rolling, the product specifications are complete, providing qualified raw materials for the subsequent cold rolling process, shortening the production process and reducing energy consumption.

The present invention provides a method for optical fiber identification through a fusion splicer. The method comprises the following steps of: putting optical fibers on a core regulation support; moving the optical fibers in an optical axis of an objective lens of the fusion splicer through the core regulation support; and collecting signals through the objective lens and the CCD to determine thetype of the optical fibers. Devices on a current welding device can be reused with no need for adding a focusing mechanism. The present invention further provides a system for optical fiber identification through a fusion splicer. The system comprises a core regulation module, a collection module, a comparison module, a selection module and a transmission module. The present invention further provides a special core regulation support for achieving the method for optical fiber identification through a fusion splicer. A housing is internally provided with two regulation holes, an elastic member of a regulation module is provided with a through hole on the housing, a swing bar is extended on the elastic member, a transfer bar penetrates the through hole and the regulation holes, a steel ball is put at the transfer bar and the swing bar, and an optical fiber location block is fixed on the swing bar and is provided with a spacing groove. The core regulation support drives the optical fibers to complete movement so as to meet the design requirement of the method for optical fiber identification.

The invention discloses a novel aluminum alloy welding wire preparation method. The method comprises the following steps: cold-rolling; drawing; oxide skin removal treatment; on-line surface mechanical grinding treatment; finished-product water tank drawing; ultrasonic wave cleaning; drying; and winding. In the oxide skin removal treatment step, the removal thickness is below 0.05mm. In the on-line surface mechanical grinding treatment step, the diameter of a projectile is 1mm-15mm, the impact speed is 1m / s-20m / s, the impact frequency is 50Hz-22KHz, the action time is 20-120 min, the material of the projectile is stainless steel, or GCr15, or glass or ceramic, and the on-line surface mechanical grinding treatment is carried out in vacuum, or in argon, or in nitrogen or in ammonia; 4-11 molds are adopted in the finished-product water tank drawing step. Oxide skin can be effectively removed, the material loss is reduced, the rate of finished products is increased, the surface roughness and the wear resistance of a welding wire are effectively increased, and the problem of poor surface wearability of current domestic aluminum alloy welding wires is solved.

The invention discloses a high-toughness scratch-resistant ABS / PBT alloy material and a preparation method thereof. The material is prepared from 37-75 parts of ABS resin, 20-50 parts of PBT resin, 2-5 parts of compatilizer, 3-8 parts of thermoplastic polyurethane elastomer, 0.5-2 parts of inorganic nucleating agent, 0.5-2 parts of scratch resistant agent, 0.2-0.4 part of antioxidant, 0.5-1 part of lubricant and 0-2 parts of other auxiliaries. Accordingly, macromolecule containing an epoxy functional group serves as the compatilizer, the thermoplastic polyurethane elastomer serves as flexibilizer, the compatibility of ABS and PBT is improved, the toughness and scratch-resistant property of the alloy material are improved, a melt extrusion method is adopted, the prepared material has the high toughness and the excellent scratch-resistant property, the material is simple in technology, convenience is brought to operate, the yield is high, and the material is suitable for industrial production and has the wide market prospect in the fields of vehicle interior and exterior trimming, household appliances, electrical and electronic products and the like.

The invention provides a core adjusting bracket comprising a housing, at least one adjusting assembly and at least one fiber positioning block. At least one adjusting hole is formed in the housing. The elastic member of the adjusting assembly is provided with a through hole at the position corresponding to the adjusting hole of the housing. An independent swing rod extends from the surface of theelastic member to the upper side of the through hole. A transmission rod penetrates the through hole of the elastic member and the corresponding adjusting hole of the housing. The lower end of the transmission rod extends out of the lower side of the adjusting hole. A steel ball is placed between the upper end of the transmission rod and the end portion of the swing rod. The fiber positioning block is fixed to the upper end of the corresponding swing rod. The upper end surface of the fiber positioning block is provided with a stopping groove for placing an optical fiber. According to the relative positions of the end surfaces of two optical fibers placed in the two fiber positioning blocks, an external mechanism is controlled to have an effect on the lower end of the transmission rod suchthat the transmission rod drives the steel ball at the upper part to move. Thus, the swing rod of the elastic member can swing relative to the body of the elastic member. The end surfaces of the two optical fibers placed in the stopping groove can be aligned to each other and a welding fusion requirement is satified.

The invention belongs to the technical field of catalyst preparation technologies and particularly relates to a petroleum refining catalyst preparation technology. The technology comprises the following steps that catalyst raw materials are placed into a catalyst preparation device box for processing through a feed hopper; a motor on a catalyst preparation device is started and drives a grinding wheel to rotate, and primary grinding is performed on the catalyst raw materials; the catalyst raw materials subjected to primary grinding fall onto rubbing plates below the grinding wheel through circular-arc-shaped slideways, the two rubbing plates are driven by cooperative rotation of an external runner and a heart-shaped sliding part to rub each other so as to perform secondary grinding on thecatalyst raw materials between the two rubbing plates; and the catalyst raw materials subjected to secondary grinding are finished products, and the finished products are pushed out of a discharging outlet through scraping plates. According to the petroleum refining catalyst preparation technology, the products are pushed to the discharging outlet through push blocks on the scraping plates, the products can be gradually pushed towards the discharging outlet, operation is easy and saves labor, pushing is quick, and the production efficiency is improved.

The invention relates to a self aligning-type permanent magnet coupling, which mainly comprises an inner rotor flange shaft sleeve, a magnetic coupling body and an outer rotor flange shaft sleeve. According to the magnetic coupling body, due to magnetic attraction coupling effects of N-S poles of permanent magnet magnetic steels arranged by an inner permanent magnet rotor and an outer permanent magnet rotor, the permanent magnet coupling can thus transfer torque. Besides, the magnetic coupling body is additionally provided with permanent magnet levitation magnet steels, through mutual repulsion effects of N-N poles or S-S poles, the two permanent magnet rotors are in a magnet levitation state radially or both radially and axially, the relative uniformity of radially-coupled magnetic steelair gaps can be ensured, and the technical difficult problem that the two permanent magnet rotors are eccentric and are absorbed together due to factors such as assembly errors, mounting errors and uneven force applying in the case of mounting can be solved.

The invention belongs to the field of brewing devices, and in particular relates to a spiral efficient energy-saving self-cleaning continuous rice steaming system. The system is characterized by comprising a tank body, wherein a rice steaming spiral belt is arranged in the tank body and is a closed circular conveying belt; a part of the rice steaming spiral belt is vertically entwined in the tank body from bottom to top, a rice inlet end is formed at the lower part of the rice steaming spiral belt in a manner of penetrating through the tank body, a rice outlet end is formed at the upper part of the rice steaming spiral belt in a manner of penetrating through the tank body, and the rice inlet end is connected with the rice outlet end; the rice steaming spiral belt between the rice inlet end and the rice outlet end is arranged outside the tank body; a steam conveying device is arranged in the tank body; a steam recycling and reusing device is arranged above the tank body and connected with a rice spray head by virtue of a pipeline, and the rice spray head is arranged at 1 / 3-1 / 2 from the interior of the tank body to the tank top; a belt body of the rice steaming spiral belt has a netlike structure. The system disclosed by the invention is high in automation degree and scientific and reasonable in design, can be used for efficiently and uniformly steaming rice, and is low in energy consumption and small in occupation, so that the system is suitable for application and popularization.

The invention discloses a preparation method of a samarium-iron-nitrogen series permanent magnet material. The method comprises the steps that metastable state samarium-iron alloy is subjected to severe plastic deformation and then is subjected to nitrogen treatment and annealing crystallization treatment, and therefore the samarium-iron-nitrogen series permanent magnet material can be obtained. In the method, when the deformed samarium-iron-nitrogen series permanent magnet material is subjected to nitrogen treatment, since the free volume 'defect' content in the metastable state alloy can beincreased through multiple shear bands produced in the severe plastic deformation process, entering and diffusion of nitrogen atoms are facilitated, and the nitriding amount and nitriding uniformity of the alloy can be remarkably improved; since the multiple shear bands are produced through the severe plastic deformation, the follow-up crystallization annealing temperature can also be reduced, andnitride is reduced or prevented from being produced; and generation of the metastable phase is restrained, grains are refined, and coercive force is improved. By means of the method, the nitriding speed can be improved, the nitriding temperature can be reduced, decomposition of a samarium-iron-nitrogen compound is restrained, the microstructure is refined, and the nitriding efficiency of samarium-iron alloy for preparing the samarium-iron-nitrogen magnetic material is improved.

The invention discloses a novel efficient instant-heating geothermal energy boiler and belongs to the field of heat recycling equipment of geothermal energy boilers. The novel efficient instant-heating geothermal energy boiler is characterized in that a water inflow pipe is sequentially connected with a water suction pump, a water storage bin, a geothermal energy boiler body and a water outflow pipe; and a wastewater recycling device, a wastewater processor and a circulating pump are sequentially connected together through a water backflow pipe and then are connected back to the water storage bin through the water backflow pipe. A water level detector is arranged on the water storage bin. When the amount of water in the water storage bin is lower then a preset value, the water level detector sends a water inflow signal to the water suction pump; the water suction pump can make water inflow through the water inflow pipe; and the amount of water in the water storage bin is supplemented to the preset value. The novel efficient instant-heating geothermal energy boiler is combined with the geothermal energy boiler body to cyclically heat underground water and recycle the underground water, underground water and waste heat generated after the underground water is used can be used most efficiently, and the energy utilizing rate is extremely high.

The invention relates to a method to improve the anti-oxidation performance of refractory steel in high temperature steam atmosphere, which is characterized in that: the surface of refractory steel waiting for treatment is conducted laser surface remelting treatment; the temperature of the surface of refractory steel rises quickly above the melting point and the refractory steel melts; then the refractory steel is freezed with the cooling rate of above 103 DEG C / s; the properties of quick heating and quick cooling of laser surface remelting is utilized to form the steel surface into a fine-grain region with the grain size smaller than 25 Mum; the lattice defects of high-density grain boundary, sub-boundary, twin boundary, dislocation and vacancy in the treatment layer are utilized to promote the diffusion of elements such as Cr and Si, thus improving the anti-oxidation performance in high temperature steam atmosphere.

The invention relates to the technical field of planting and discloses an efficient regional fertilizing method. The method includes: soil treatment, regional division, crop planting, crop rotation and harvesting treatment. The efficient regional fertilizing method is characterized in that soil is divided into different regions for differentiated fertilizing, so that fertilizing efficiency is high; after 4-5 years of fertilizing, crop yield is increased by 133-139%, organic matter content of the soil is increased by 212-218%, water and soil erosion is reduced by 84-86%, and harmful substance content is reduced by 76-78%; organic fertilizer is applied into the soil, and earthworm is stocked, so that organic matter content can be increased, and soil structure can be improved; the soil is divided into different regions, and different crops are planted respectively according to seasons, so that different nutritional ingredients are gathered; rotation is performed according to rules, so that nutritional ingredients of the soil are enabled to meet needs of crop growing; after toxic substance is removed from the crop planted in each region, soil is added again, so that toxic substance is reduced, and soil structure is constantly refined.

The invention discloses a capillary eddy heat exchanger and belongs to the field of ground source heat pump devices. The capillary eddy heat exchanger is characterized by comprising a main case, a cooling-medium circulation line is arranged in the main case, a water inlet and a water outlet are respectively arranged in side walls of two ends of the main case, and the water inlet is located above the water outlet; the cooling-medium circulation line comprises an inlet pipe and an outlet pipe, a plurality of branch pipes with two ends communicated with the inlet pipe and the outlet pipe are arranged in parallel, and the branch pipes are spirally wound the inlet pipe or the outlet pipe from the periphery; the water inflowing direction of the water inlet forms a 0-45-degree included angle with the main case; water-inflowing rotation direction is opposite to the flowing direction of a cooling medium, and water circulation is opposite to circulation flowing direction of the cooling medium, and with over-entering and down-out water flow, more sufficient heat exchange is achieved. Besides, the capillary eddy heat exchanger is provided with a guiding device, a supporting device and a protecting device, hermetic heat exchanging space enclosed by upper and lower separating sealing rubber gaskets and the inner wall of the main case enables the capillary eddy heat exchanger to be more compact in structure, practical, safe and convenient and long in service life.

The invention belongs to the technical field of processing and preparation of composites, and discloses a preparation method of a tungsten-particle-reinforced aluminum-based composite. The method includes the following steps that (1) ethyl alcohol is used as a mixing medium, tungsten powder is arranged in a mixer for mixing, and pretreated tungsten powder is obtained after vacuum drying; (2) aluminum powder or aluminum alloy powder is mixed with the pretreated tungsten powder obtained in step (1), and composite powder is obtained; (3) cold isostatic pressing, vacuum degassing, hot isostatic pressing sintering, upsetting, hot extrusion and heat treatment are performed on the composite powder obtained in step (2), and the tungsten-particle-reinforced aluminum-based composite is prepared. Bythe aid of the preparation method, the density of the aluminum-based composite can be increased remarkably, the microstructure of the composite can be refined, the anisotropism of the composite can bereduced, and the application range of the aluminum-based composite can be expanded.

The invention belongs to the technical field of remote sensing image processing, and discloses an on-orbit high-precision light-weight global image control point database construction method and system, and the method comprises the steps: obtaining a control point of a satellite remote sensing image through employing an image feature extraction algorithm and a uniform sampling algorithm; making acorresponding control point image film, and determining point location index information of a control point; sorting the attribute information of the control point to form a control point attribute file; constructing a global image control point database system structure; associating the control point image film with the control point attribute file by using a data integration technology to form acontrol point data block; and formulating a database storage strategy, and storing the control point images into a database. The method is suitable for remote sensing images provided by different global satellites, is refined in structure, simple to implement, small in database volume, high in data precision, high in expandability, and meets the requirements of on-orbit surveying and mapping processing.