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Preparation method of titanium alloy bars
ActiveCN102230097AEasy to operateStrong process controllabilityMetal-working apparatusTitanium alloyFracture toughness
The invention discloses a preparation method of titanium alloy bars. The finished titanium alloy bars are prepared through the following steps: heating prepared TC4-DT titanium alloy ingots to 1150 to 1200 DEG C; cogging and forging a beta phase zone of the ingots with a fast forging press; heating forging stocks to Tbeta-50 to Tbeta-20 DEG C through a resistance furnace; carrying out repeated upsetting and extension forging by the fast forging press; forging forged stocks to required dimensions at a forging temperature of Tbeta-70 to Tbeta-40 DEG C to obtain titanium alloy bars with uniform tissues; and carrying out duplex annealing on the obtained titanium alloy bars with the uniform tissues. The preparation method has the advantages of convenient operation, strong controllable technology, high stability of batches of prepared bars, and good repeatability. The titanium alloy bars prepared through the method of the present invention has the advantages of strong plasticity, qualified macrostructure, high strength and fracture toughness, and low fatigue crack growth rate.
Owner:西安大富宇航科技有限公司
Flight equipment control method and flight equipment
ActiveCN104932526AStrong process controllabilityImprove securityPosition/course control in three dimensionsControllabilityAerospace engineering
The embodiment of the invention discloses a flight equipment control method and flight equipment. The method comprises the steps that a course instruction transmitted by a control end is received by the flight equipment and the flight equipment flies according to the preset course corresponding to the course instruction; when a switching instruction transmitted by the control end is received, a new course is acquired according to the switching instruction; the preset course is switched to the new course by the flight equipment; and the flight equipment flies according to the new course so that an objective of temporarily changing the course in the midway of flight of the flight equipment can be realized, a possible accident to the flight equipment caused by sudden change of external environment in the midway of flight can be avoided, the current task can be interrupted to execute a new task, and thus flight controllability, safety and flexibility can be effectively enhanced.
Owner:SZ DJI TECH CO LTD
Novel modular bionic underwater robot based on full-flexible pectoral fins
InactiveCN104943839AImprove mobilityImprove concealmentPropulsive elements of non-rotary typePhase differenceBionics
The invention discloses a novel modular bionic underwater robot based on full-flexible pectoral fins. A hydrodynamic module of eagle ray pectoral fins is analyzed, and motion of the pectoral fins is decomposed into vertical bending flapping in the vertical body longitudinal axis direction and twisting motion taking the vertical body longitudinal axis direction as the axis. The whole robot comprises a sectioned main body, a left flexible pectoral fin module, a right flexible pectoral fin module and a tail fin module, and a group module is formed by connecting fin connecting parts; the left and right flexible pectoral fin modules are identical in structure and are in mirror symmetry; a pectoral fin framework adopts a structure similar to that of a plane rib, a symmetrical airfoil is taken as the basic shape, and the pectoral fin modules with streamline sections are spliced through serial connection of straight pectoral fin trunk bones and steel wires. A large steering engine and a small steering engine are arranged at the root and the tip of each pectoral fin to control vertical flapping and twisting motion of each pectoral fin. Through adjustment of motion amplitude, motion frequency and phase difference of the two steering engines of each pectoral fin, different pectoral fin motion postures can be realized, and fish body motion can be finished better.
Owner:BEIHANG UNIV
Method for preparing metal organic frame supported film
ActiveCN101912737AStrong process controllabilitySolve the technical difficulties of weak binding force and difficult film formationSemi-permeable membranesChemical reactionMetal-organic framework
The invention relates to a method for preparing a metal organic frame supported film. The method comprises the following steps of: reacting a metal source provided by an inorganic supporting body with an organic ligand so as to generate a layer of crystal seeds on the surface of the supporting body; and preparing a continuous film layer through a secondary reaction. The method integrates a synthetic process and a coating process of the crystal seeds, and the crystal seeds generated through an in-situ chemical reaction are evenly distributed on the surface of the supporting body and have strong bonding force with the supporting body, and thus, a metal organic frame supported film with good integrity and high stability can be prepared successfully. The method can effectively solve the problem that a metal organic frame material can hardly form a film on the inorganic supporting body. The filming method of the invention has important meaning to the mass preparation and the practical application of the metal organic frame supported film.
Owner:NANJING UNIV OF TECH
High-voltage mono-crystal lithium nickel cobalt manganese oxide anode material and preparation method thereof
ActiveCN104134791AStable structureImprove high temperature performancePolycrystalline material growthCell electrodesElectrochemistryVoltage
The invention relates to a high-voltage mono-crystal lithium nickel cobalt manganese oxide anode material and a preparation method thereof. The molecular formula of the anode material is LiNixCoyMn1-x-yMzO2, wherein M is one or more of Ti, Mg, Al, Zr, La, Ce, B and Sn, and the values of x, y and z meet the conditions as below simultaneously: 0<=x<=1, 0<=y<=0.3, and 0<=z<=0.8. The prepared high-voltage LiNixCoyMn1-x-yMzO2 is made up of micron-sized mono-crystal particles, and the average size of the mono-crystal particles is 2 to 15 microns. The LiNixCoyMn1-x-yMzO2 anode material has the advantages of high electrochemical property, high compaction density, good property of processing pole pieces, good high / low-temperature circulating property and rate capability, good high-temperature storage property and safety property and wide voltage application range of 4.35V to 4.6V, and the anode material can be used in the CE and EV markets widely.
Owner:贵州容百锂电材料有限公司
Method for preparing carbon nanofiber based non-noble-metal catalyst through oxidation improved electrostatic spinning
InactiveCN103606689ALow priceEasy to operate and controllableCell electrodesCarbon fibersCarbon nanofiber
The invention discloses a method for preparing a carbon nanofiber-based non-noble-metal catalyst through oxidation improved electrostatic spinning in the technical field of carbon nanofibers and fuel cell catalysts. The method disclosed by the invention comprises the following steps: dissolving at least one transition metal salt and polyacrylonitrile in a solvent to form a precursor solution; carrying out electrostatic spinning on the precursor solution under certain parameter conditions to obtain iron-containing polyacrylonitrile nanofibers; and heat treating the iron-containing polyacrylonitrile nanofibers in an atmosphere containing a small amount of oxidizing gas to obtain carbon nanofibers containing transition metal and nitrogen element and improved by the small amount of oxidizing gas. According to the method, the cost of the raw materials is low, the operation is convenient and controllable, the operation is easy, the surface structure of the catalyst can be regulated and controlled, and the prepared oxidation improved carbon nanofiber based non-noble-metal catalyst has good catalytic activity on oxygen reduction reaction. The whole preparation process can be combined with a traditional carbon fiber technique, and the method has a prospect that large scale and industrialization of the non-noble metal catalyst can be realized.
Owner:TSINGHUA UNIV
Symmetrical liquid drop injecting three-dimensional fast shaping method and apparatus thereof
The present invention belongs to rapid molding field of technology, which especially relates to a rapid shaping method and a device of metal. Inert gas used by the present invention is bled into a crucible and a vacuum tight chamber that can obtain steady differential pressure by means of pressure control system, which makes mental fusant ejected in the form of laminar jet from a micro-nozzle that is positioned on a bottom of the crucible. Vibration disturbance mental shooting flow produced by a piezoelectric oscillator turns metal shooting flow into uniform droplets. And real-time size parameters of the droplets mentioned-above can be obtained by monitoring system and computer analysis system. Subject to the size parameters of part that are input in advance, micro-computer control system has the real-time control for electrical field parameters of a deflexion polar plate, thus, controlling flight profile of the metal droplets and manufacturing metal parts with good quality in cooperation with a three-dimensional control station. The present invention is able to directly turn liquid metal into close-finished metal parts that are provided with rapid coagulation and delicate structure. The present invention has short technological process and products have good quality, which greatly reduces equipment investments.
Owner:TIANJIN UNIV
Self-pressurized high-speed polishing method and device for inner surface of hole by means of abrasive particles and magnetic flow
InactiveCN105881185AImprove machining accuracyImprove processing efficiencyEdge grinding machinesPolishing machinesMagnetic currentReciprocating motion
The invention provides a self-pressurized high-speed polishing method for the inner surface of a hole by means of abrasive particles and a magnetic flow. According to the method, the abrasive particles are coated with and restrained on the inner surface of the hole of a workpiece by the aid of ferromagnetic particles in a magnetorheological polishing fluid, which flows at a high speed, under the effect of a magnetic field produced by moving magnetic bodies, a flexible polishing abrasive brush flowing at a high speed is formed and reciprocates to rub against the inner surface of the hole of the machined workpiece to remove burrs and reduce the roughness of the inner surface of the hole, and burr removal and deterministic polishing are realized for various types of inner surfaces of holes. The invention further provides a self-pressurized high-speed polishing device for the inner surface of the hole by means of the abrasive particles and the magnetic flow. The device comprises a polishing mechanism, the magnetic bodies, a clamping mechanism, a sliding guide rail and a driving motor, wherein the driving motor drives the magnetic bodies to enable the polishing fluid to reciprocate in the hole at the high speed for polishing. The method and the device can solve problems that special holes are difficult to polish and the polishing efficiency is low, and have the advantages of high precision, high machining efficiency, low damage and low cost.
Owner:GUANGDONG UNIV OF TECH
Method and system for processing abnormal task in computer application system adopting embedded operating system
ActiveCN102141947AImprove work performanceGuaranteed reliabilitySoftware testing/debuggingRedundant operation error correctionOperational systemSoftware engineering
The invention provides a method for processing an abnormal task in a computer application system adopting an embedded operating system; and an application system based on main and standby redundancy configuration of a hardware platform is adopted. The method comprises steps executed by a process of initializing the computer application system, a process of updating a task state table, a process of capturing the abnormal task, a process of detecting a closed loop, a process of processing the abnormal task and a process of checking system restart. The invention also provides a system for processing the abnormal task in the computer application system adopting the embedded operating system; and the system comprises a detecting module, a capturing module, a record inquiring module, a task state table, an abnormal information memory region and a processing module. By the method and the system, the stable working capability of the computer application system is guaranteed, the abnormal taskof a closed loop or automatic restart can be detected and recorded, the error correcting capability of the computer application system is provided in large scale, and the controllability of a development process of the computer application system can be improved.
Owner:EASTERN COMM
Production method of basement for enhancing raman scattering of molecule
InactiveCN101776604AImprove enrichment capacityEnhanced Raman ScatteringNanostructure manufactureRaman scatteringBasementSensitivity test
The invention provides a production method of a basement for enhancing the raman scattering of a molecule, which comprises following steps of: (1) selecting substrate material, cleaning and hydrophilically treating; (2) producing a micro nanometer structure layer on the surface of the substrate; (3) metallizing the micro nanometer structure layer to obtain the substrate with a nanometer metal structure; (4) decorating the surface of the substrate obtained by the step (3) to obtain a surface decoration layer, wherein the surface decoration is preparation of a gas sensitivity interface or a molecule biological film or an adsorbed film or a surface activated material according to the property of the molecule to be tested to improve the property of the basement to enrich the molecule to be tested and the action for activating the basement; (5) adding the molecule to be tested on the substrate with a surface decoration layer; and (6) changing external medium environment around the substrate to improve the enhancement effect of the raman scattering of the molecule to be tested. The external medium environment around the substrate comprises circumambient environment material, or excitation wave length, or optical field distribution or magnetic field distribution. The production method can be used for high sensitivity test; and the substrate has the advantages of high controllability,consistency, repeatability, stability and the like.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Manufacturing method of tunable semiconductor laser and tunable semiconductor laser
ActiveCN101227061AIncrease investmentShorten the development cycleOptical wave guidanceLaser detailsGratingWaveguide
Provided is a making method of a tunable semiconductor laser and a tunable semiconductor laser, wherein the making method comprises the following procedures: growing lower waveguide layer, multiple quantum trap structure, upper waveguide layer and indium phosphide layer epitaxially and sequentially on the n type substrate; growing earth silicon dielectric membrane on the epitaxial layer; dividing into active waveguide region and raster region; butting passive waveguide portion; removing earth silicon dielectric membrane and indium phosphide layer on the surface of the active waveguide region; growing ridge waveguide indium phosphide material and low resistivity InGaAs ternary layer sequentially; growing earth silicon dielectric membrane; making raster graphic of the ridge waveguide and the ridge waveguide on the raster region; etching raster of the ridge waveguide and the ridge waveguide on the raster region; growing earth silicon dielectric membrane continuously; opening the window separately on active waveguide region and raster region in order to make electrode isolation ditch; making P face and N face electrode of laser. The invention has good product property and high automation degree of the product making, which simplifies the technology process and has good product ratio.
Owner:GUANGXUN SCI & TECH WUHAN
Nitrogenous niobium vanadium microalloying 500MPa and 550MPa high-intensity aseismic reinforcing steel bar and melting method
ActiveCN102071357AIncrease supersaturationIncrease the number ofManufacturing convertersNiobiumAdditive ingredient
The invention provides a nitrogenous niobium vanadium microalloying 500MPa and 550MPa high-intensity aseismic reinforcing steel bar and a melting method. The high-intensity aseismic reinforcing steel bar comprises the following ingredients in percentage by mass: 0.20 to 0.25 wt percent of C, 0.35 to 0.55 wt percent of Si, 1.35 to 1.58 wt percent of Mn, 0.013 to 0.025 wt percent of V, 0.019 to 0.032 wt percent of Nb, 0.065 to 0.085 wt percent of N, at most 0.040 wt percent of S, at most 0.040 wt percent of P and the balance Fe and unavoidable impurities. The reinforcement effect of microalloy V and Nb is sufficiently exerted through increasing the N and decreasing the V and the Nb, the addition of the ferrocolumbium and vanadium nitrogen alloy is reduced, and the addition of noble alloy issaved. Compared with the traditional vanadium nitrogen alloy microalloying 500MPa high-intensity reinforcing steel bar , the nitrogenous niobium vanadium microalloying 500MPa and 550MPa high-intensity aseismic reinforcing steel bar provided by the invention has the advantages that the alloying cost of the process is reduced by 65 to 75 Yuan / t steel over the same periods, the economic benefit is obvious, the process production cost is low, the applicability and the controllability are high, the produced 500MPa and 550MPa high-intensity reinforcing steel bar is widely applicable to highrise andlarge-scale constructional engineering, and the aseismic performance and the welding performance of the reinforcing steel bar are good.
Owner:WUKUN STEEL
Visible-blind ultraviolet detector based on Beta-Ga2O3/SiC heterojunction thin film and fabrication method of visible-blind ultraviolet detector
ActiveCN105742398AStrong process controllabilityEasy to operateFinal product manufactureSemiconductor devicesHeterojunctionUltraviolet detectors
The invention relates to an ultraviolet detector, in particular to a visible-blind ultraviolet detector based on a Beta-Ga2O3 / SiC heterojunction thin film and a fabrication method of the visible-blind ultraviolet detector. According to the fabrication method, a layer of Beta-Ga2O3 thin film is deposited on an n-type 6H-SiC substrate by a laser molecular beam epitaxial technique, and then a layer of Ti / Au thin film is deposited on the n-type 6H-SiC substrate and the Beta-Ga2O3 thin film through a mask by a radio frequency magnetron sputtering to be used as an electrode. The fabricated visible-blind ultraviolet detector has the advantages of stable performance, response sensitivity, small dark current and high potential application; and moreover, the fabrication method has the characteristics of high process controllability, simplicity in operation, high universality, restorability of repeated test and the like, and has great application prospect.
Owner:ZHEJIANG SCI-TECH UNIV
Automatic stringer
InactiveCN104920572AReduce in quantityControl running speedMeat/sausage hanging-upPutting meat on skewersPunchingKnurling
The invention relates to an automatic stringer which comprises a power transmission device, an automatic meat slicing device with a propelling automatic meat locking box, a knurling tool meat cutting device, a shearing and feeding device and an automatic prod punching device, wherein the device integrates slicing, slitting, bar-cutting and prod-stringing, so that the production efficiency is improved, automation and multi-functionalization can be further realized, the automatic stringer is multipurpose, and the consumption of manpower and material resources as well as financial resources is greatly reduced. The automatic stringer not only can string meat, but also can string various foods such as balls and the like. Moreover, meat in different thicknesses and different sizes can be stringed. The mechanical degree and the production efficiency are improved, and the automatic stringer is easy to operate and maintain, low in cost, small in size and high in degree of automation.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
Capacitive type micro-acceleration sensor with double-sided symmetrical elastic beam structure and manufacturing method
ActiveCN102495234AImprove performanceHigh sensitivityDecorative surface effectsAcceleration measurementEtchingBlock structure
The invention relates to a capacitive type micro-acceleration sensor with a double-sided symmetrical elastic beam structure and a manufacturing method. The capacitive type micro-acceleration sensor is characterized in that: (1) an SOI silicon wafer of a double-device layer is a substrate with an elastic beam-mass block structure; (2) a fixed upper electrode and a fixed lower electrode are respectively located on the upper and lower sides of the mass block; (3) the elastic beam is a straight beam of which one end is connected with the mass block, and the other end is connected with a support frame; (4) overload protection salient points are formed on the upper and lower surfaces of the mass block; (5) damping regulation grooves are formed on the upper and lower surfaces of the mass block; and (6) an electrode leading through hole of the mass block is located above the support frame. By adopting the wet etching self-stop technology, the elastic beam-mass block structure which is the most important in the acceleration sensor is processed and formed once in the wet etching; and the bonding of three layers of silicon wafers is realized by a silicon-silicon direct bonding method, and the electrode leading through hole of the mass block is formed on the fixed upper electrode through infrared aligned photoetching. According to the invention, the cross-axis sensitivity is reduced while the device sensitivity is improved.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Short text classification method based on CHI and classified association rule algorithm
ActiveCN106202518AOvercoming skewed situationsImprove controllabilitySpecial data processing applicationsText database clustering/classificationAlgorithmText categorization
The invention provides a short text classification method based on CHI and a classified association rule algorithm. The frequencies of frequent word sets of different types of texts are measured, a category frequent factor (LFF) is introduced, the minimum support threshold values of text categories are reasonably allocated through the LFF, the phenomenon that frequent word set categories mined by adopting a traditional FP-Growth algorithm are deflective is avoided, meanwhile category tendency judgment is conducted on the frequent word sets, a CHI checking algorithm is adopted to measure the relevance degree of characteristic words and the categories instead of measurement based on simple word frequency statistics, the step that best parameters are determined through manual parameter setting and experiments is omitted, and the controllability of a classification system is enhanced. In addition, the invention further provides a parallel characteristic extension short text classification algorithm based on a Hadoop / MapReduce big data computing platform. MapReduce parallelization design is conducted on a category frequent factor calculating and characteristic extension method, the short text classification accuracy rate and classification efficiency are improved, and the controllability of the system is improved.
Owner:GUILIN UNIV OF ELECTRONIC TECH
AC/DC hybrid modularized microgrid network structure based on hybrid energy storage and networking method of structure
ActiveCN104065099ASimplified networking access solutionImprove overall controllabilitySingle network parallel feeding arrangementsAc network load balancingModularityPower grid
Owner:STATE GRID CORP OF CHINA +1
Electronic payment system and remote-based or near-field-based payment method
InactiveCN103426084AGuarantee authenticityImprove confidentialityCash registersProtocol authorisationPasswordComputer terminal
The invention relates to an electronic payment system and a remote-based or near-field-based payment method. The electronic payment system comprises a remote payment subsystem and a near-field payment subsystem, each of the subsystem comprises a payment card, a payment terminal, a collection card, a collection terminal, a payment server and a collection server. According to the remote-based payment method, remote payment can be achieved through a bound remote payment account, the payment terminal, the payment card and payment passwords, remote payment collection can be achieved through a bound remote collection account, the collection terminal and the collection card, and the payment server receives payment amount and the payment passwords. According to the near-field-based payment method, near-field payment can be achieved through a bound near-field payment account, the payment terminal and the payment card, near-field payment collection can be achieved through a bound near-field collection account, the collection terminal and the collection card, the payment information of the payment terminal and the payment information of the payment card are mutually backed up, and the collection information of the collection terminal and the collection information of the collection card are mutually backed up.
Owner:牟大同
Method for preparing continuous carbon fiber-reinforced thermoplastic resin composite material
The invention discloses a method for preparing a continuous carbon fiber-reinforced thermoplastic resin composite material, which comprises the following steps: mixing N,N-dimethylacetamide and acetone at the mass ratio of (1-5):1 to obtain mixed solvent; dissolving 1-5 parts by weight of polyether sulfone into 30-60 parts by weight of mixed solvent to be fully dissolved so as to obtain polyethersulfone solution; adding 0.5-2.5 parts by weight of indissolvable thermoplasticity powdered resin into the polyether sulfone solution by mechanical stirring or ultrasonic vibration to obtain suspension with stable performance, wherein the added thermoplasticity resin powder is evenly distributed; dipping the continuous carbon fiber into mixed thermoplasticity resin suspension at the temperature of 18-22DEG C to obtain prepreg; and carrying out hot pressing and shaping to the prepreg to obtain a product. The method for preparing the continuous carbon fiber-reinforced thermoplastic resin composite material has the advantages of low cost, simple technology and small solvent toxicity.
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Processing method of dynamic data of embedded browser
InactiveCN101645084AReduce couplingStrong process controllabilitySpecial data processing applicationsExternal applicationCoupling
The invention provides a processing method of dynamic data of an embedded browser. A JavaScript engine of the browser is used in a web page for expanding a non-standard JavaScript method for calling back a dynamic data acquisition module; acquisition of dynamic data is specifically realized in the dynamic data acquisition module in an application procedure; layout is carried out on the dynamic data in the web page for realizing the combination of the dynamic data with the web page, and the browser analyzes the layout of the web page for completing the layout and display of the dynamic data. The method carries out the interaction by the related method of calling the JavaScript engine for expansion in the web page, the callback way and the dynamic data acquisition module of the application procedure which is independent out of the browser, realizes the acquisition of the dynamic data and determines the display form; and the layout of the dynamic data is completed by the independent layout in the web page, and the management of the browser is carried out by the browser without the need of external application procedure for intervention, thereby being capable of separating the data acquisition of the browser, the layout and the display, reducing the coupling degree of the browser with the external application procedure and simplifying the complexity.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI
Correcting method for high speed railway ballastless track subgrade in soft soil area
ActiveCN103821039AConstruction quality is easy to controlFlexible and controllable operationRailway tracksLateral displacementInjection pressure
The invention discloses a correcting method for high speed railway ballastless track subgrade in a soft soil area. The correcting method comprises the following steps that 1, when the lateral displacement of the high speed railway embankment occurs , a deformation groove and a plurality of stress relief apertures are formed in an asymmetrical load region, the deformation groove is filled with rigid foam, and the stress relief apertures are filled with grits and rubbles; 2, a first row jet-grouting pile is arranged in a second soft stratum area, the instantaneous injection pressure generated by the construction of the first row jet-grouting pile is utilized to drive a pile foundation reinforcement area located at the bottom of the high speed railway embankment to conduct the displacement from the second soft stratum area to a first soft stratum area, the pile foundation reinforcement area drives a subgrade reinforcement bed course located above the pile foundation reinforcement area and the high speed railway embankment to move simultaneously, and the correcting for the high speed railway subgrade is achieved; 3, the deformation groove is densely filled with the rubbles plus 5% of cement. An acting force is applied on subgrade deeps, the subgrade drives the subgrade body to conduct a movement, so that the purpose of correcting the lateral displacement of the subgrade is achieved.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
Method and system for switching microgrid between island mode and grid connected mode
ActiveCN102403735AGuaranteed uptimeReduce transient transition timeEnergy industrySingle network parallel feeding arrangementsMicrogridElectric network
The invention, belonging to the field of dispatching and management of a distribution network, provides a method and system for switching a microgrid between an island mode and a grid connected mode. When an external electric network has a fault, distributed power in a microgrid system is cut off, a grid connected contact breaker of the microgrid system and the external electric network is opened, a voltage and a frequency of the microgrid system are regenerated by a main power switching control mode in the microgrid system, and the microgrid system works independently; and when the external electric network returns to normal, if the electric network side voltage of the grid connected contact breaker is monitored to be normal and is lasted for a certain time, operations of a fan, a photovoltaic power generation system and an energy storage system of a storage battery are stopped, the grid connected contact breaker of the microgrid system is closed, a load is powered with the external electric network, the devices such as the fan and the like are reconnected to the grid for operation, so that a stable operation of the microgrid system in a transient state process of switching between the island mode and the grid connected mode is satisfied, the transient time is shortened, and the requirements of the microgrid system in safety, reliability and quick response are satisfied. The method and system have the characteristics of quickness, stability and reliability.
Owner:STATE GRID TIANJIN ELECTRIC POWER +3
Ejecting-type jet flow cavitation generator and cavitation cell disruption device
ActiveCN103244468ASimple structureLow costBioreactor/fermenter combinationsBiological substance pretreatmentsCentrifugal pumpPiping
The invention discloses an ejecting-type jet flow cavitation generator and a cavitation cell disruption device. The cavitation generator comprises a nozzle, a suction chamber, a throat pipe, a diffuser and an outlet pipe. The nozzle is connected in the suction chamber in a sleeved manner, and a suction pipe is arranged on the side of the suction chamber. The cavitation cell disruption device comprises a container, a high-pressure centrifugal pump and the above cavitation generator, wherein the container is used for storing cells to be disrupted, the high-pressure centrifugal pump is connected with the container through a water pipe, and the cavitation generator is connected with the high-pressure centrifugal pump through the pipe. Valves are respectively arranged on an entrance of the nozzle, the suction pipe and the outlet pipe to control degree of cavitation. In the cavitation cell disruption device, high-pressure liquid sucks up low-pressure liquid to cause cavitation to happen in the tail end of the suction chamber and the throat pipe, cells are disrupted by microjet and shock waves produced from bubble collapse, and drastic shearing actions between the other two fluids can also have tearing effect to the cells. The ejecting-type jet flow cavitation generator and the cell disruption device for cavitation cells are simple in structure, low in cost, free of moving components, reliable in operating, strong in cavitation transport, high in crushing efficiency, and thereby applicable to mass application.
Owner:WUHAN UNIV
Laser micro-nano machining differential confocal online monitoring integration method and device
PendingCN108286936ASolve driftSolve real-timeNanotechnologyUsing optical meansMicro nanoDimension measurement
The present invention belongs to the field of laser precision detection technologies and laser micro-nano machining monitoring technologies, and relates to a laser micro-nano machining differential confocal online monitoring integration method and device which can be used for laser micro-nano machining and online detection of a complex micro-nano structure. A laser differential confocal axial monitoring module with high axial resolution and a femtosecond laser machining system are organically integrated, a differential confocal system curve zero point is employed to perform nanoscale monitoring of a sample axial position and measurement of a sample axial machining size to achieve real-time fixed focus of the sample axial position and high-precision measurement of the micro-nano structure size after machining, solve the drift problem and the high-precision online detection problem in the measurement process, improve the controllability of micro-nano femtosecond laser machining precisionand sample machining quality. Prior to machining, a microimaging module is utilized to perform rough alignment and horizontal position identification of the sample.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Equipment for producing reconstituted tobacco through dry-method paper making method
The invention relates to equipment for producing reconstituted tobacco through a dry-method paper making method. The equipment comprises a fiber decomposing device, a basal piece forming device, a pulp spraying device and a drying device. The production equipment is provided with various types of material ports and a built-in pipeline humidifying device, and a multi-pipeline feeding mode is adopted to enable the feeding uniformity and controllability to be improved; sprayed pulp contains much tobacco powder, tobacco extracts and adhesives and is large in viscosity; through the equipment, the pulp can be fully dispersed, and the phenomenon that hot air flowing in a drying oven is distributed unevenly to cause the pulp to be partially over-dried can be avoided.
Owner:GUANGDONG GOLDEN LEAF TECH DEV
Method for repairing fused quartz optical damage component
The invention discloses a method for repairing a fused quartz optical damage component, which belongs to the technical field of the optical material and the optical component, in particular to a method for repairing and processing laser damage of a fused quartz optical component. The method comprises the following steps: firstly adopting infrared carbon dioxide laser to carry out laser fusion repair on the damage part of the fused quartz optical damage component; and then carrying out annealing treatment on the fused quartz optical damage component subjected to laser fusion repair. The method can carry out complete repair on the fused quartz optical damage component and eliminate residual stress caused by the laser fusion repairing process. The fused quartz optical component repaired by the method can revert to the state of the ideal fused quartz optical component. And the method also can inhibit the increase of the damage points of the fused quartz optical component. The method can prolong the service life of the fused quartz optical component, greatly reduces operation cost and has the characteristics of strong process controllability, high repetitiveness and stable performance.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
Spray forming system for preparing alloy and metal-based composite parts
The invention relates to a spray forming system for preparing alloy and metal-based composite parts. The spray forming system is characterized in that: an intermediate frequency induction melting furnace, a transfer crucible, a high-pressure gas nozzle, a receiver, a three-dimensional workbench and an ultrasonic transducer tool head are arranged in a vacuum tank; the vacuum tank is connected witha vacuum machine through a pipeline, the side wall of the vacuum tank is provided with a feeding hole and a discharge hole, and the intermediate frequency induction melting furnace is fixed on a supporting plate through a melting furnace bracket and connected with a servo motor mechanism for controlling the movement of the intermediate frequency induction melting furnace; and the transfer crucible is arranged at the lower part of one side of the intermediate frequency induction melting furnace and connected with a diversion pipe through a threaded through hole in the bottom of the transfer crucible, and the ultrasonic transducer tool head is fixed on the fixed bracket. The spray forming system can effectively thin atomized granules and improve the metal yield, and is advanced and reliablein technical routes, low in production cost and easily controlled in product quality.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Service filtering method and device based on default bearer
ActiveCN102325350AFlexible management and controlImprove controllabilityNetwork traffic/resource managementTransmissionAccess Point NameControllability
The embodiment of the invention discloses a service filtering method and device based on a default bearer. By applying the technical scheme of the embodiment of the invention, a PGW (packet data network gateway) is used for configuring the corresponding TFT (traffic flow template) rules for the default bearer according to APN (access point name) information, and services on the default bearer are filtered according to the TFT rules, so that the corresponding service flows, such as the service flow of the services with the lower added value, can be filtered out according to the corresponding rules, the management, the control and the optimization of the services on the default bearer can be realized, an operator can perform the flexible management and the control on the services of different users, which are connected into a PDN (packet data network) and the controllability of the PGW to the network as a core network interface can be improved.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Piezoelectric cantilever vibration energy harvester and preparation method thereof
InactiveCN101944860AAugmented variableImprove output performancePiezoelectric/electrostriction/magnetostriction machinesDecorative surface effectsEnergy harvesterPiezoelectric cantilever
The invention discloses a piezoelectric cantilever vibration energy harvester and a preparation method thereof, belonging to the technical field of micro electro mechanical system (MEM). The harvester comprises an upper cantilever, a lower cantilever, a mass block and a fixing device, wherein the mass block is arranged at one end of the lower cantilever, and the fixing device is fixed at the other end of the lower cantilever; the upper cantilever is arranged on the mass block and the fixing device and is symmetrical with the lower cantilever; the mass block and the fixing device are respectively and fixedly connected with the upper cantilever; distance from the fixing device to the mass block is L; the upper cantilever comprises a first support layer, a first lower electrode layer, a first upper electrode layer and a first PZT layer; the lower cantilever comprises a second support layer, a second layer electrode layer, a second upper electrode layer and a second PTZ layer; and the support layer comprises a first SiO2 layer, an Si layer and a second SiO2 layer. The invention improves mechanical transformation ability, can collect more electrical energy from mechanical vibration, has controllable preparation method and improves the production success rate of the devices.
Owner:SHANGHAI JIAO TONG UNIV
User terminal access right control method and user terminal
ActiveCN105447368AImprove experienceStrong process controllabilityDigital data protectionDigital data authenticationComputer terminalControllability
Embodiments of the present invention disclose a user terminal access right control method and a user terminal. The method comprises: detecting biometric information input for the user terminal; determining whether the biometric information matches with preset biometric information; if the biometric information matches with the preset biometric information, acquiring access rights corresponding to the preset biometric information, wherein the access rights corresponding to different preset biometric information are different; determining executable items corresponding to the access rights; and when receiving an executive instruction for a target executable item in the executable items, executing the target executable item in response to the executive instruction. By implementing the embodiments of the present invention, the corresponding access rights can be acquired according to the input biometric information, thereby improving the controllability of of the user terminal.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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