1570results about How to "Fast transfer" patented technology

The invention relates to the technical field of lithium metal batteries, in particular to a flame-retardant in-situ polymerization gel electrolyte battery and a preparation method thereof.The flame-retardant in-situ polymerization gel electrolyte battery comprises a positive plate, a negative plate, a diaphragm and gel electrolyte; the gel electrolyte is mainly formed by mixing a liquid electrolyte, a polymeric monomer, a cross-linking agent, a flame retardant and an initiator and then performing in-situ polymerization. A polymeric monomer and a cross-linking agent are subjected to a thermally-initiated in-situ free radical polymerization reaction, a spatial net-shaped structure is formed through a cross-linked molecular chain, and the polymer is filled with a liquid electrolyte and a flame retardant, so that the gel electrolyte with a flame-retardant effect is obtained and is applied to a lithium metal battery; and the interface stability and cycle stability between the electrolyte and the positive / negative electrode can be enhanced. Meanwhile, the mechanical property of the gel electrolyte can be adjusted and improved by utilizing the polymeric monomer, so that a solid-solid contact interface in the battery can be improved; moreover, through component optimization, the ionic conductivity of the gel electrolyte can be improved, and rapid transmission of lithium ions is facilitated.

The invention belongs to the technical field of pervaporation membrane preparation and application, and relates to a covalent organic framework pervaporation hybrid membrane with a combination sequence regulation interlayer structure, in particular to preparation of the pervaporation membrane and application of the pervaporation membrane in water / butanol separation. Adding the aldehyde monomer solution into the amino monomer solution, and standing for reaction; taking a water phase, and carrying out dialysis treatment; diluting the covalent organic framework nanosheet dispersion liquid to obtain dispersion liquid A; adjusting the pH of a polyelectrolyte aqueous solution to obtain a solution B; adjusting the pH value of the metal ion dispersion liquid to obtain a solution C; uniformly mixing the dispersion liquid A and the solution C at normal temperature, adding the solution B, and heating for reaction to obtain a membrane casting liquid; and carrying out suction filtration on the membrane casting solution to a base membrane, and carrying out vacuum drying to obtain the pervaporation membrane. At 70 DEG C, the separation flux of a 10wt% / 90wt% water / butanol mixture is 7.52 g / (m < 2 > h), and the separation factor reaches 13709.

The invention relates to the technical field of sodium ion batteries, in particular to a sodium ferric sulfate positive electrode material and a preparation method and application thereof. The preparation method of the sodium ferric sulfate positive electrode material comprises the following steps: obtaining a carbon foam substrate; weighing raw materials according to the stoichiometric ratio of the sodium ferric sulfate positive electrode material, and adding the raw materials into a solvent to obtain a mixed solution; depositing the mixed solution on a carbon foam substrate by adopting an electrostatic spray deposition method to obtain a precursor film; and sintering the precursor film to obtain the sodium ferric sulfate positive electrode material. According to the preparation method, the carbon foam is adopted as a substrate material, the sodium ferric sulfate precursor is prepared through electrostatic spray deposition, and then the sodium ferric sulfate material is obtained through sintering treatment, so that the specific discharge capacity, the rate capability and the cycle performance of the sodium ferric sulfate material are all remarkably improved.

The invention relates to the technical field of battery materials, in particular to a graphite negative electrode material and a preparation method and application thereof. The graphite negative electrode material comprises graphite particles, the average length La of the graphite particles in the alpha-axis direction of microcrystals is larger than or equal to 40 nm, the average thickness Lc of the graphite particles in the c-axis direction of the microcrystals is larger than or equal to 25 nm, and the interlayer spacing d002 ranges from 0.336 nm to 0.338 nm, and the number parameter of the microcrystals contained in each single graphite particle is defined as N = D503 / (La2 * Lc); d50 is the median particle size of the graphite particles, the unit is [mu] m, and the numerical value of N is more than 0 and less than or equal to 0.04. The graphite negative electrode material disclosed by the embodiment of the invention comprises the graphite particles with stable microcrystalline structure, large microcrystalline size and large interlayer spacing, so that the expansion and stress distribution uniformity of the negative electrode material in the circulation process is improved, the diffusion of ions in the graphite particles is facilitated, the consumption of active lithium is reduced, and the service life of the negative electrode material is prolonged. And the dynamic and super-long cycle stability of the graphite negative electrode material is improved.

The invention relates to the technical field of solar cells, and particularly discloses a back contact solar cell, a cell module and a photovoltaic system, and the cell comprises a silicon substrate which is provided with a light receiving surface and a backlight surface which are opposite to each other; a doping layer and an electrode layer are sequentially arranged on the backlight face in the direction away from the light receiving face, the doping layer comprises N-type doping layers and P-type doping layers which are alternately arranged at intervals, the electrode layer comprises N-type electrodes and P-type electrodes, the electrical conductivity of the silicon substrate, the electrical conductivity of the P-type doping layers and the electrical conductivity of the N-type doping layers are sequentially increased, and the electrical conductivity of the P-type doping layers and the electrical conductivity of the N-type doping layers are sequentially increased. When the silicon substrate is a P-type silicon substrate, the total length of all the N-type electrodes is greater than the total length of all the P-type electrodes; when the silicon substrate is an N-type silicon substrate, the total length of all the P-type electrodes is larger than the total length of all the N-type electrodes. Separation of photo-generated electron hole pairs and collection of current can be enhanced, series resistance can be effectively reduced, power loss in the cell is reduced, filling factors are improved, meanwhile, the effective power generation area of the silicon substrate is increased, more photo-generated carriers are generated, short-circuit current is improved, and the conversion efficiency of the cell is effectively improved.

The invention relates to the technical field of new energy station fault diagnosis, in particular to a new energy station fault diagnosis system and method based on an intelligent sensor, and the system comprises an intelligent processing unit which collects operation parameters in a station in real time, carries out the fault diagnosis of the operation parameters, and obtains diagnosis data; when the method is used, potential problems of equipment can be found in time, the data transmission bandwidth is effectively reduced, rapid transmission of real-time data is guaranteed, the equipment can adjust the working state in a self-adaptive mode under different operation conditions, false alarm or missing alarm caused by a fixed threshold value is avoided, and the service life of the equipment is prolonged. The influence of a network bottleneck on the overall efficiency of the system is reduced, the response speed and stability of the system are improved, the bandwidth resource waste is reduced, the overall performance of the network is improved, the timeliness and reliability of fault diagnosis are enhanced, meanwhile, the real-time performance and reliability of a data acquisition and monitoring system in a new energy station are greatly improved, and the application prospect is wide. And the potential cause of the fault can be accurately identified.

The invention relates to a direct-current circuit breaker based on a thyristor and an on-off method of the direct-current circuit breaker, and belongs to the technical field of direct-current middle-high voltage power system fault protection. The direct-current circuit breaker comprises a main switch branch, a current transfer branch, a voltage-limiting energy consumption branch and a pulse commutation loop, the direct-current circuit breaker is connected with a power system in series, and the main switch branch is connected with the current transfer branch. Two nodes connected in series are respectively marked as Q1 and Q2, the main switch branch and the voltage-limiting energy consumption branch are connected in parallel through the Q1 and Q2, one ends of secondary sides of two high-frequency transformers in the pulse commutation loop are respectively connected to the Q1 and Q2, and the other ends of the secondary sides of the two high-frequency transformers in the pulse commutation loop are respectively connected to two ends of the current transfer branch. The problem that in the prior art, a large number of pulse charging and discharging loops are configured for meeting the fault large-current breaking requirement, and consequently the size and cost are increased is effectively solved.

The invention discloses a diaphragm and a preparation method thereof, and a lithium battery, the diaphragm comprises a base membrane, and also comprises an MXene coating arranged on one side of the base membrane along the thickness direction, and an alumina coating arranged on the other side of the base membrane along the thickness direction; wherein the MXene coating layer comprises MXene modified by metal single atoms, and the aluminum oxide coating layer comprises aluminum oxide. According to the diaphragm and the metal monatomic modified MXene, the transfer speed of lithium ions in the charging and discharging process of a lithium battery can be increased, so that the electrochemical reaction speed in the charging and discharging process is increased, the requirement of high-rate charging and discharging is met, and the cycle performance of the battery is improved; aluminum oxide can enhance the mechanical strength of the diaphragm and prevent negative lithium dendrites from puncturing the diaphragm, so that thermal runaway is avoided, and the safety of the battery is improved.

The invention discloses a mountainous region photovoltaic array remote monitoring and fault early warning installation system which comprises a monitoring unit used for collecting operation data of a mountainous region photovoltaic array in real time, and a fault early warning unit used for judging whether the mountainous region photovoltaic array breaks down or not according to the data collected by the monitoring unit and sending out an early warning signal when the fault occurs. The remote monitoring center is used for receiving data transmitted by the monitoring unit and monitoring and managing the running state of the mountain photovoltaic array in real time, the installation support is used for installing the mountain photovoltaic array, the monitoring unit collects photovoltaic assembly and environment data in real time through various sensors, the data processing module carries out preprocessing and analysis, and the data processing module carries out real-time monitoring and management on the running state of the mountain photovoltaic array. And the data transmission module transmits data to a remote monitoring center in time, so that omnibearing and real-time monitoring of the running state of the mountain photovoltaic array is realized, the running condition of the mountain photovoltaic array can be mastered in time, and potential problems can be found.

The invention relates to the technical field of clamping equipment, in particular to clamping equipment suitable for machining of refrigeration compressors of different sizes. The clamping equipment comprises a moving plate, a second mounting plate is arranged on the moving plate, a driving assembly is arranged on the second mounting plate, and two clamping arms are symmetrically arranged on the second mounting plate; a plurality of telescopic grooves are evenly formed in the clamping arms, hydraulic telescopic rods are arranged in the telescopic grooves, the top ends of the hydraulic telescopic rods are rotationally connected with ejector rods, and rubber balls are arranged at the top ends of the ejector rods; a containing groove is formed over the telescopic groove, sliding grooves are symmetrically formed in the positions, located at the upper end and the lower end of the containing groove, of the telescopic groove, limiting assemblies are slidably connected into the sliding grooves, the annular air bag is arranged on the limiting assemblies, and clamping grooves matched with the limiting assemblies are formed in the ejector rod. An air pump used for inflating and sucking air into the annular air bags is arranged on the second mounting plate.

The invention relates to the technical field of semiconductor image sensors, in particular to a high-speed TDI image sensor pixel unit and an image sensor, the pixel unit is composed of a polysilicon gate, a buried channel and a photodiode, the active region of the photodiode is trapezoidal, the long bottom edge of the trapezoidal active region is connected with the buried channel, the active region comprises multiple stages of n-type injection regions, and the n-type injection regions are connected with the buried channel. And built-in potentials are sequentially decreased from the buried channel injection region to the short bottom edge of the trapezoidal active region. According to the TDI image sensor pixel unit, the clamping photodiode is additionally arranged on a traditional TDI image sensor pixel unit, and the photodiode adopts a combined design of a trapezoid and a multi-stage n-type injection region, so that the potential is gradually increased towards a polysilicon gate in a stepped manner, the flowing speed of charges to the polysilicon gate is increased, the flowing time is shortened, and on the premise that power consumption is not increased, the photoelectric conversion efficiency is improved. The method can be applied to high-speed scenes. The image sensor is designed based on the pixel units, so that the power consumption can be effectively reduced, the information acquisition speed is improved, and the image aliasing problem is avoided.

The invention discloses a polyurethane-based solid electrolyte as well as a preparation method and application thereof. The polyurethane-based solid electrolyte comprises a metal organic framework three-dimensional skeleton film and a composite polyurethane layer attached to the surface of the metal organic framework three-dimensional skeleton film, the metal organic framework three-dimensional framework film is metal organic framework modified glass fiber cloth; the composite polyurethane layer comprises polyurethane and metal organic framework particles embedded in a macromolecular network of the polyurethane in situ; a carbamate group of polyurethane and a three-dimensional skeleton of the metal organic framework form a hydrogen-bond interaction, so that the ion transmission performance and the mechanical performance are synergistically improved. The polyurethane-based solid electrolyte provided by the invention can promote lithium salt dissociation, inhibit anion migration, improve the ionic conductivity and the ionic transference number, and improve the charge-discharge stability; a large number of repetitive unit carbamate groups in polyurethane and a three-dimensional skeleton form hydrogen-bond interaction to synergistically promote rapid transmission of lithium ions, so that the transference number of the polymer electrolyte is increased, and the ion transmission performance and the mechanical performance are improved.

The invention provides a preparation method of a triazine / heptazine homojunction structure carbon-doped carbon nitride photocatalyst, which comprises the following specific steps: (1) placing mixed powder of melamine and 2, 4, 6-triaminopyrimidine in air, heating to 300-500 DEG C, and calcining for 2-6 hours to form a mixture of carbon-doped melamine and oligomer thereof; (2) placing the mixture obtained in the step (1) in water at 60-70 DEG C, performing ultrasonic dispersion, then slowly cooling to room temperature, oscillating for 12-36 hours, removing moisture through rotary evaporation, and further drying to obtain a solid supramolecular precursor; and (3) fully mixing the solid supramolecular precursor obtained in the step (2) with molten salt, calcining at 500-600 DEG C for 2-6 hours, cooling, fully washing with deionized water, removing mixed salt, separating solid residues, and drying to obtain the triazine / heptazine homojunction structure carbon-doped carbon nitride photocatalyst THCNx-t. The prepared carbon-doped carbon nitride photocatalyst is uniform in homojunction distribution, and has the characteristics of excellent photochemical properties, high photon-generated carrier separation efficiency and excellent photocatalytic benzyl alcohol selective oxidation performance.

The invention relates to the technical field of data processing, and discloses a BIM model storage system and method based on lightweight data, and the system comprises a tree segment management module which is used for constructing a tree segment structure, and taking each segment as a storage unit; the segment multiplexing creating module is used for creating multiplexing segments in the tree-shaped segment structure, realizing data multiplexing in a reference mode, and creating style segments for centralized management of drawing attribute information; the parallel rendering module is used for rendering the model primitives by adopting a parallel computing method based on the geometric information and the attribute information in the multiplexing segments; the lightweight data generation module is used for organizing the BIM model data according to a tree-shaped segmentation structure and generating a binary data file; and the data compression module is used for compressing the binary data file to generate a compressed format storage file. The technical problem that efficient storage, transmission and application requirements of the BIM model are difficult to meet in the prior art is solved.

The invention discloses hard carbon with a molecular sieve type closed-pore structure and a preparation method thereof.The preparation method comprises the steps that a biomass mixture such as cotton and crop waste serves as a raw material, or a mixture containing 70-90% of cellulose, 9-20% of hemicellulose, 1-10% of lignin and the like serves as a raw material, calcination is conducted at the temperature of 300-600 DEG C, and a pre-carbonized precursor is obtained; and then cleaning the precursor with an alkali solution, and finally carrying out secondary calcination at 900-1400 DEG C to obtain a hard carbon product with a molecular sieve type closed pore structure.

The invention discloses a preparation method and sodium storage application of a sodium-enriched sodium ferric sulfate composite material. The preparation method comprises the following steps: carrying out low-speed ball milling on iron-based sulfate and dispersed CNTs (Carbon Nanotubes), carrying out vacuum drying, carrying out heat treatment, and naturally cooling to room temperature to obtain FeSO4 / CNTs; the preparation method comprises the following steps: mixing FeSO4 / CNTs and anhydrous Na2SO4 according to a molar ratio of Na to Fe of 7: 5.5, carrying out low-speed wet ball milling, carrying out vacuum drying, and grinding to obtain Na2SO4 / FeSO4 / CNTs; and compacting Na2SO4 / FeSO4 / CNTs, placing the Na2SO4 / FeSO4 / CNTs in a tubular furnace, preserving heat at 350-400 DEG C for 10-24 hours, cooling to room temperature, and grinding to obtain the Na7Fe5.5 (SO4) 9 / CNTs composite material. The Na7Fe5.5 (SO4) 9 positive electrode material disclosed by the invention has good sodium storage specific capacity, excellent rate capability and stable long cycle life.

The utility model discloses a manipulator for transferring an electroplating hanger. The manipulator comprises a fixed beam, a movable frame, a sliding seat and a hanger claw, the fixed beam is transversely and fixedly mounted; the sliding seat can be driven by the first driving part to translate along the fixed beam; the moving frame vertically extends, and the sliding seat can be driven by the second driving part to move along the moving frame; the hanger claw is fixed on the sliding seat; the hanger claw comprises a claw base, a positioning unit and a positioning air cylinder, wherein the positioning unit and the positioning air cylinder are fixed to the claw base. The positioning air cylinder is installed above the positioning unit, a telescopic unit of the positioning air cylinder vertically stretches out and draws back, and a pressing plate is fixed to the lower end of the telescopic unit. According to the electroplating hanger transfer manipulator, the stroke of the electroplating hanger transfer manipulator can be conveniently expanded by expanding the number of the fixed beams, so that the hanger claw can run among stations for a long distance, in addition, the electroplating hanger transfer manipulator is accurate in positioning and firm in clamping of the electroplating hanger, large-size and heavy-weight electroplating pieces can be quickly transferred, and the electroplating hanger transfer manipulator is high in practicability and high in practicability. Operation is stable, shaking is avoided, and durability is high.

The invention discloses a pin-by-pin-level steady-state physical-thermal coupling analysis method for a liquid metal cooling fast reactor, which is based on an OpenFOAM platform, realizes fast and high-fidelity physical-thermal coupling calculation by coupling a three-dimensional steady-state neutron transport equation and a three-dimensional CFD control equation under a sub-channel grid, and realizes high-fidelity physical-thermal coupling analysis of the three-dimensional steady-state neutron transport equation and the three-dimensional CFD control equation. And three-dimensional physical and thermal phenomena such as neutron space scattering, cross flow and backflow are accurately analyzed. The method comprises the steps that firstly, OpenMC is adopted for fine modeling, and a few-group constant library is generated; secondly, geometric modeling and grid division are carried out; and then, setting an initial physical field and boundary conditions, respectively carrying out internal iteration solution of the physical thermal engineering, gradually converging the neutron flux and the coolant temperature field through external iteration between the physical thermal engineering, and finally obtaining a steady-state physical-thermal coupling characteristic. The efficient and accurate pin-by-pin level coupling analysis method is provided for the physical-thermal characteristics of the liquid metal cooled fast reactor, and effective guidance is provided for design optimization and safety analysis.

The invention relates to the technical field of Internet of Things, in particular to an Internet of Things intelligent linkage control method and an Internet of Things intelligent linkage control device, and the method comprises the steps: S1, obtaining the working state of home equipment and the real-time data of environment information, and transmitting the real-time data to a central control platform; s2, preprocessing the real-time data to obtain preprocessed data; s3, analyzing the preprocessed data, and generating a corresponding linkage control instruction; s4, encoding the linkage control instruction to generate encoded data, and performing lossless compression on the encoded data by adopting a ZSTD compression algorithm to obtain a compressed code; s5, searching an optimal sending communication network by adopting a flora optimization algorithm, and sending the compressed code to the home equipment; and S6, the home equipment decompresses the compressed code by using an LZMA compression algorithm, and executes the linkage control instruction. According to the invention, the ZSTD compression algorithm and the flora optimization algorithm are adopted, the delay of data transmission and processing is significantly reduced, the overall response speed of the smart home system is improved, and the user experience is better.

The present invention discloses a wide temperature range hydrated eutectic electrolyte and its application in aqueous zinc ion batteries. The wide temperature range hydrated eutectic electrolyte comprises a zinc salt, an alcohol organic solvent and an inorganic additive. The zinc salt is zinc perchlorate hexahydrate; the organic solvent is ethylene glycol; and the inorganic additive is an indium trichloride solution. The hydrated eutectic electrolyte prepared by the present invention enables aqueous zinc ion batteries to exhibit excellent electrochemical properties in a wide temperature range, can effectively inhibit the generation of side reactions such as dendrites and corrosion in aqueous zinc ion batteries, and thus prolong the service life of aqueous zinc ions in a wide temperature range.

The invention provides a detachable high-adaptation conductive adhesive test seat and adaptation equipment thereof, and relates to the technical field of chip tests.The test seat comprises a base, a bottom plate and a connecting frame, two connecting blocks are arranged in the base, the opposite faces of the two connecting blocks are fixedly connected with fixing blocks, the base is internally provided with a test seat, and the test seat is fixedly connected with the bottom plate. The control system determines corresponding clamping parameters including the stroke of the air cylinder, the clamping force and the like according to the type and the specification of the chip, the control system sends out an instruction to drive the air cylinder to start acting, a piston rod of the air cylinder stretches out and drives the clamping block to move towards the chip, and the clamping block accurately clamps the chip according to the preset position and force. According to the automatic chip testing device, the chips are ensured to be stable in the testing process, so that automatic adaptive fixation of different chips is realized, the identification and adjustment processes can be quickly completed through automatic identification and adaptive functions after the chips are put into the device, the manual intervention time is greatly shortened, and the overall automation degree and the testing efficiency are improved.

The utility model relates to the technical field of agricultural machinery, in particular to a straw returning, plastic film residue recycling and round bundling all-in-one machine which comprises a straw smashing assembly, a first conveying auger, a film lifting assembly, a plastic film residue bundling assembly, a machine frame and a driving assembly. The straw smashing device is reasonable and compact in structure, when the straw smashing device is used, the front portion of the machine frame and a tractor are installed together through the traction frame, an output shaft at the rear end of the tractor and an input shaft of the driving assembly are installed in a transmission mode, and straw stubbles are smashed and thrown into the first conveying auger when the straw smashing assembly works. A first conveying auger works to convey smashed straw stubbles to the two sides of a rack, a film lifting assembly lifts out residual films in a stratum during working and then conveys the residual films to a residual film bundling assembly, finally the residual films are wound into a cylindrical shape through the bundling assembly, the residual films can be recycled in a centralized mode, the film lifting assembly can lift out the residual films in the stratum according to fluctuation of the ground, and therefore the residual films can be recycled. And the straw returning, plastic film residue recycling and round bundling all-in-one machine can be conveniently and rapidly transferred on a road through the conveying wheels.

The invention discloses zinc ion battery electrolyte as well as a preparation method and application thereof, and belongs to the technical field of ion battery electrolyte. According to the preparation method disclosed by the invention, the coumarin derivative is added into the basic zinc salt solution, so that the uniform deposition of zinc ions can be promoted at a low temperature of-20 DEG C or below, the formation of dendritic crystals is remarkably reduced, and a stable protective layer is formed on the surface of the zinc anode, and the protective layer can maintain high reversibility of the battery at a normal temperature, and also can be used for preparing a lithium ion battery. And the stability can be kept in a low-temperature environment, so that the battery can show excellent electrochemical performance under different temperature conditions, and the technical problem of the electrochemical performance of the water-based zinc ion battery (ZIBs) in the low-temperature environment is solved.

The invention belongs to the technical field of catalyst preparation, and particularly relates to a catalyst for reducing the generation amount of N2O in an ammonia gas conversion process and a preparation method of the catalyst. The catalyst comprises a carrier, wherein the carrier is sequentially coated with an ammonia gas adsorption and conversion functional coating and an NO reduction functional coating; the NO reduction functional coating comprises a first molecular sieve and Cu or Fe, and further comprises a pore-forming template agent, and Cu or Fe is loaded on the first molecular sieve; the ammonia gas adsorption and conversion functional coating comprises a second molecular sieve and active metal. The inner-layer ammonia gas adsorption and conversion functional coating of the catalyst can adsorb excessive ammonia gas jetted from the upstream at low temperature, the ammonia gas conversion capacity is improved along with temperature rise, the ammonia gas is converted into NO, and the formed NO is rapidly diffused to the outer-layer NO reduction functional coating and reacts with the ammonia gas adsorbed by the outer-layer NO reduction functional coating to generate N2 and H2O. Over-oxidation of ammonia gas is effectively reduced, and the generation amount of N2O is reduced.

The invention relates to a defect-rich cobalt-doped MoS2 / NiSe2 heterojunction nano array electrode as well as a preparation method and application thereof, and belongs to the field of electro-catalysis and new energy materials. The electrode is composed of a self-supporting MoS2 / NiSe2 heterojunction nano array, cobalt atom doping and abundant structure defects are introduced at the same time, and the hydrogen evolution reaction (HER), oxygen evolution reaction (OER) or urea oxidation reaction (UOR) activity of an electrode material in alkaline electrolyte is remarkably improved. The prepared electrode material has the advantages of low cost, high activity, good stability and the like, and has wide application prospects in the fields of water electrolysis, metal-air batteries, domestic sewage treatment and the like.

The invention discloses a surface defect indentation marking and rapid indentation response testing device and method, and relates to the technical field of precise instruments and industrial automatic detection.The surface defect indentation marking and rapid indentation response testing device comprises a supporting unit, a macroscopic moving unit, a rapid switching unit and a precise testing unit, the macroscopic moving unit is arranged on the supporting unit, the rapid switching unit is connected with the macroscopic moving unit, the precision testing unit is arranged on the macroscopic moving unit, and the precision testing unit comprises a scanning structure and an indentation marking structure. The macroscopic moving unit can drive the precise testing unit to move, and the rapid switching unit is used for switching the positions of the scanning structure and the indentation marking structure. According to the surface defect indentation marking and rapid indentation response testing device and method, the positions of the scanning structure and the indentation marking structure can be rapidly switched.

The invention provides a cleaning conveying line, which is used for transporting to-be-cleaned parts fixed on a tray and comprises a loading area, a first cleaning conveying area, a second cleaning conveying area and an unloading area. The loading area is arranged at the inlet end of the cleaning conveying line so as to receive and place trays fed by external conveying equipment, and the trays bear to-be-cleaned parts. The first cleaning conveying area is connected with the loading area so as to convey the to-be-cleaned part to a preset cleaning station; the second cleaning and conveying area is arranged on one side of the first cleaning and conveying area so as to receive the parts cleaned by the first cleaning and conveying area; wherein a plurality of translation raceways are arranged between the first cleaning and conveying area and the second cleaning and conveying area, so that a to-be-cleaned part is conveyed between the two conveying areas; and the unloading area is arranged at the tail end of the first cleaning and conveying area, so that the cleaned parts are output to an external production line, and the problem that in the prior art, a cleaning and conveying line is low in efficiency is solved.

The invention discloses a water-guiding quick-drying composite fabric and a preparation method thereof, and belongs to the technical field of textile materials. The preparation method comprises the following steps: placing one side of a hydrophobic fabric on a metal sheet with a local dot matrix arrangement electric field, electrifying the metal sheet, and spraying a hydrophilic modifier with heterogeneous charges from the other side of the hydrophobic fabric by adopting an electrostatic spraying technology to obtain a core fabric layer; spraying the spraying liquid on one side surface, without the metal plate, of the core fabric layer to form an adhesive fiber layer, then covering the adhesive fiber layer with a hydrophilic nanofiber membrane, and carrying out a hot pressing process to obtain the composite material. According to the water-guiding quick-drying composite fabric, water can be gathered on one side of the fabric in the form of liquid drops and then is separated from the surface of the fabric, and the water separation rate is far greater than the evaporation rate of water on the surface of a common Janus fabric after spreading and is also far greater than the maximum perspiration rate of a human body in a high-temperature, high-humidity and high-intensity sports scene; and the overall comfort of the human body microenvironment is greatly improved.

The invention discloses an automatic welding production line for workpieces, and belongs to the technical field of automatic welding. An automatic workpiece welding production operation line comprises a rack and further comprises a feeding part, the feeding part comprises a first feeding assembly and a second feeding assembly, and the first feeding assembly and the second feeding assembly are arranged on the two sides of the rack respectively; the welding part is arranged at the tail end of the first feeding assembly; the conveying positioning part is arranged on one side of the second feeding assembly and used for conveying the to-be-welded materials to the welding part and transferring the welded materials from the welding part; the conveying positioning part comprises a pushing and pressing mechanism used for positioning materials and a conveying mechanism arranged on the pushing and pressing mechanism and used for conveying the materials. By means of the welding device, welded workpieces can be conveniently and rapidly moved out, machining gaps caused by workpiece replacement are avoided, and therefore the machining efficiency is improved.

The invention relates to the field of transformers, in particular to a no-load current adjustable transformer which comprises an adjustable transformer body, the adjustable transformer body comprises a shell, a partition plate is fixedly connected to the lower portion in the shell, a bottom bin is arranged on the lower portion of the partition plate, and side bins are fixedly connected to the middles of the two sides in the shell. The device comprises a shell, air heating cavities are formed in the two sides of the shell, guide pipes are fixedly connected to the front side and the rear side of the top of each air heating cavity, the ends, away from the air heating cavities, of the guide pipes penetrate through the side wall of the shell, the ends, away from the air heating cavities, of the guide pipes penetrate through the tops of side bins, piston plates are slidably connected into the side bins, and limiting rods penetrate through the front portions and the rear portions of the piston plates. According to the adjustable transformer, the situation that the safety performance of the adjustable transformer is affected due to the fact that the temperature of insulating oil is accumulated and rises to exceed a safety threshold value can be effectively avoided, and the safety of the transformer is effectively improved.