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319results about How to "Flexible regulation" patented technology
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Dilution regulation method and device for breathing apparatus
InactiveUS6789539B2Flexible regulationRespiratorsOperating means/releasing devices for valvesInhalationAmbient pressure
In a method of regulating the flow rate of additional oxygen taken from a pressurized inlet for oxygen from a source and admitted into a breathing mask provided with an inlet for dilution ambient air, the ambient pressure and the instantaneous inhaled breathe-in flow rate in terms of volume reduced to ambient conditions are measured in real time. The minimum oxygen content in the complete inhalation phase in order to comply with respiratory standards is computed from the ambient pressure and the instantaneous flow rate of additional oxygen is controlled in such a manner as to satisfy the requirements of the applicable standards with a safety margin that is generally a few percent. There is also described a regulator implementing the above method.
Owner:SAFRAN AEROTECHNICS
Dilution regulation method and device for breathing apparatus
InactiveUS20030084901A1Requires practiceFlexible regulationRespiratorsOperating means/releasing devices for valvesInhalationAmbient pressure
In a method of regulating the flow rate of additional oxygen taken from a pressurized inlet for oxygen from a source and admitted into a breathing mask provided with an inlet for dilution ambient air, the ambient pressure and the instantaneous inhaled breathe-in flow rate in terms of volume reduced to ambient conditions are measured in real time. The minimum oxygen content in the complete inhalation phase in order to comply with respiratory standards is computed from the ambient pressure and the instantaneous flow rate of additional oxygen is controlled in such a manner as to satisfy the requirements of the applicable standards with a safety margin that is generally a few percent. There is also described a regulator implementing the above method.
Owner:SAFRAN AEROTECHNICS
Catalytic cracking process of petroleum hydrocarbons
InactiveUS20030116471A1Easy to operateGood choiceCatalytic crackingCatalytic naphtha reformingThermodynamicsPtru catalyst
The present invention discloses a catalytic cracking process of petroleum hydrocarbons and a tube-in-tube riser reactor used therein. In the present invention, a catalyst is fed via an inlet conduit to an inner tube and an annular space between the inner and outer tubes of the tube-in-tube riser reactor to contact a hydrocarbon feedstock, and the hydrocarbon feedstock is cracked under FCC conditions, then a reaction stream thus produced flows into a separation apparatus via a confluence tube to separate a hydrocarbon product stream from a spent catalyst, the spent catalyst is stripped and regenerated, then a regenerated catalyst is recycled for reuse. The process of the present invention can improve both product distribution and product properties.
Owner:CHINA PETROCHEMICAL CORP +1
Asphalt self-adhesive and high-polymer self-adhesion rubber waterproof coiled material prepared from asphalt self-adhesive
InactiveCN102559135AGood compatibilityHigh composite strengthMineral oil hydrocarbon copolymer adhesivesNon-macromolecular adhesive additivesUltimate tensile strengthButadiene-styrene rubber
The invention discloses asphalt self-adhesive. The asphalt self-adhesive comprises the following components in percentage by weight: 45 to 65 percent of asphalt, 16 to 25 percent of rubber oil, 5 to 15 percent of styrene butadiene styrene (SBS), 1 to 6 percent of styrene butadiene rubber (SBR), 1 to 6 percent of petroleum resin, 1 to 7 percent of ethylene vinyl acetate (EVA), and 10 to 20 percent of talcpowder. The invention also provides a high-polymer self-adhesion rubber waterproof coiled material which comprises a non-woven fabric coating, a high-polymer sheet coating, and an asphalt self-adhesive coating which consists of the asphalt self-adhesive from bottom to top. Two ends of the waterproof coiled material are provided with joint sides. The asphalt self-adhesive contains EVA, so the compatibility of the self-adhesive and a high-polymer sheet is improved, and compounding intensity of the high-polymer sheet coating is improved. The problem that the high-polymer sheets cannot be jointed reliably in a self-adhesion joint process is solved, so the coiled materials are jointed by the adhesive; and the coiled materials can be adhered firmly and reliably, and adjusted freely and flexibly.
Owner:SHENZHEN ZHUOBAO TECH
Function regulation and control structure production method based on continuous fiber composite material 3D printing
ActiveCN107433713AImprove mechanical propertiesStrong applicabilityAdditive manufacturing apparatus3D object support structuresThree dimensional modelComputer Aided Design
Owner:深圳协同创新高科技发展有限公司
Electric-magnetic compound field synergy laser-cladding method and device
ActiveCN104195541ARealize the enhancement of constituency customizationOvercome the defect of being unable to control the convective tendency of the molten poolMetallic material coating processesTransmission channelErbium lasers
The invention discloses an electric-magnetic compound field synergy laser-cladding method and device. In the laser-cladding process, an applied electric field and an applied magnetic field are simultaneously coupled in a workpiece, so that conductive fluid of a molten pool is capable of generating controllable lorentz force by means of the synergic effect of the electric-magnetic compound field, the heat and mass transfer behavior in the laser cladding process can be regulated and controlled, and tendency control of the molten convection can be realized to achieve the aims of regulating and controlling solidification structures, optimizing mechanical performances of the workpiece, regulating distribution of solute element or external hardness phase, improving the surface appearance of a cladding layer and the like. The electric-magnetic compound field synergy laser-cladding device comprises a laser, a laser transmission channel, a powder feeding head, a permanent magnetic or excitation device, a workpiece clamp, a lead wire, a low-voltage high-current power supply and the like. The device realizes synergic control of the electric-magnetic compound field on the laser induced molten pool, and has the characteristics of strong regulation and control capability, flexible regulation and control type, wide application range and the like.
Owner:ZHEJIANG UNIV OF TECH
Metal fiber-nanometer carbon fiber-carbon aerogel composite material and preparation method and use thereof
InactiveCN101661839ASelf-supportingGood for electrolyte storageElectrode manufacturing processesHybrid capacitor electrodesMetal fiberInternal resistance
The invention discloses a metal fiber-nanometer carbon fiber-carbon aerogel composite material and a preparation method and a use thereof, wherein, the material contains metal fiber, nanometer carbonfiber and carbon aerogel; a binding point of the metal fiber is sintered on a tri-dimensional net structure, the nanometer carbon fiber grows on the metal fiber, and the carbon aerogel is coated on the nanometer carbon fiber. The preparation method comprises the following steps: sintering the metal fiber net structure in a large area on a selected thin layer; allowing the nanometer carbon fiber togrow by catalyzing a selected chemical vapor phase deposition method of a carbon-containing compound under a specified condition; then coating a selected organic polymer on the nanometer carbon fiber, and carbonizing the polymer at a certain temperature to obtain the metal fiber-nanometer carbon fiber-carbon aerogel composite material. The material can be taken as an electrode material of a novelchemical power supply; and the material has a self-supporting integral structure without an organic polymer macromolecular binding agent, has a tri-dimensional layered hole structure which is beneficial to ion transmission and storage, and has high electrical conductivity, small internal resistance and good chemical energy storage performance.
Owner:EAST CHINA NORMAL UNIV
Lightweight wear-resistant density-gradient foamed sole material and preparation method thereof
The invention relates to a lightweight wear-resistant density-gradient foamed sole material and a preparation method thereof. The lightweight wear-resistant density-gradient foamed sole material is mainly composed of EPDM, ethylene-octene copolymer, low density polyethylene, a cross-linking agent, a filling material, a foaming agent and a foaming promoter. On the basis of foaming of EPDM, POE and LDPE and through control of a foaming ratio and density difference values of each layer of materials, a heterogeneous expandable rubber compound composed of a plurality of layers and having quasi-continuously changing performances in the thickness direction of the materials are subjected to one-shot mould pressing, foaming and moulding so as to prepare the foamed sole material, and function gradient differences of density, hardness and wear resistance are realized. Due to gradual change of density, stress concentration is mitigated, and the prepared foamed sole material does not warp. The foamed material has low density at one side close to the vola while the foamed material has high density at one side close to the outer sole, so the foamed sole material has good wear resistance, reduces the weight of the sole and has improved wearing comfortableness.
Owner:CHINA LEATHER & FOOTWEAR IND RES INST +1
Catalytic cracking method and apparatus
ActiveCN100338185CReduce carbon contentHigh activityCatalytic crackingChemical industryControl valves
The invention discloses a kind of catalysis crack method and its device in petroleum chemical industry, to solve the problems as the whole activeness reduction of mixed catalysts and the flexibility lack of adjusting the agent-oil proportion of heavy oil riser reactor caused by the mixing wise of the spend catalyst and regenerating catalyst of the present two-riser catalysis crack device. The main characteristics of the invention method are: part of the spent catalyst from the light hydrocarbon riser reactor (4) gets into catalyst mixer through the spent catalyst duct (3) set flow control valve (1) after water vapour stripped in the stripping section (7) of the second settler, and gets into heavy oil riser reactor (12) to react after mixed by the effect of water vapour with the regenerating catalyst form regenerator (14) in catalyst mixer. The method of the invention is suitable to be used in the two-riser catalysis crack craft and the three-riser catalyst crack craft set heavy oil riser reactor; the invention has disclosed related devices.
Owner:SINOPEC LUOYANG PETROCHEM ENG CORP
Device and method for reducing the temperature of catalytic cracking regenerated catalyst
Owner:CHINA PETROCHEMICAL CORP +1
Static magnetic field-laser coaxial composite fusion covering method and device
ActiveCN103741138AWide range of applicationsFlexible regulationMetallic material coating processesSurface shapeElectromagnet
The invention relates to a static magnetic field-laser coaxial composite fusion covering method and a device and belongs to the technical field of laser processing. A static magnetic field is provided by an electromagnet, and the coaxial compositing of the magnetic field and a laser beam is realized through a device. When in magnetic field-laser coaxial fusion covering, the magnetic field generation device moves coaxially and synchronously with the laser beam, the coupling of the magnetic field and a laser-induced molten pool flow field can be completed, the laser fusion covering process is completed through a preset or coaxial powder delivery way, the flowing of the laser-induced molten pool can be inhibited, so that a purpose for controlling the solidification structure, improving the surface shape of the fuse covering layer, optimizing the distribution of the stress and reducing the splashing phenomenon in the fuse covering process can be realized. The coaxial synchronous motion of the magnetic field and the laser can be realized. The static magnetic field-laser coaxial composite fusion covering method and device have the characteristics of good capacity for controlling the fuse covering layer, wide application range, simplicity in structure, convenience in popularization and the like.
Owner:HANGZHOU BOHUA LASER TECH
Thick steel plate with excellent rack arrest property and preparation method of thick steel plate
The invention belongs to the field of preparing steels and in particular relates to a thick steel plate with excellent rack arrest property and a preparation method of the thick steel plate. The thick steel plate is prepared from the following chemical components including a plain carbon steel or a microalloy steel. The preparation method comprises the following steps: water cooling while carrying out rolling deformation on a billet after being discharged out of a furnace, ensuring the temperature of the surface of the billet to be cooled to 400-800 DEG C during each rolling, ultra rapid cooling to 600-700 DEG C with the cooling speed to be larger than or equal to 15 DEG C / s after rolling is finished, and finally, air cooling to room temperature. According to the thick steel plate and the preparation method disclosed by the invention, the tissue of the thick steel plate takes ferrite as a parent phase and a second phase as a pearlite, the upper and lower surface layers of the thick steel plate are both an ultra-fine grain layer, the thickness of a single-sided ultra-fine grain layer is larger than or equal to 0.1 times of the thickness of the thick steel plate, the ferrite average grain size of each ultra-fine grain layer is smaller than or equal to 3 microns, and the grain boundary density of a large angle boundary is larger than or equal to 0.676 microns<-1>. The thick steel plate is excellent in rack arrest property and improved in core toughness and can be used for shipbuilding, in particular to structure materials of large container ships, offshore platforms, crude oil, natural gas conveying pipelines and the like.
Owner:NORTHEASTERN UNIV
Device and method for reducing the temperature of catalytic cracking regenerated catalyst
ActiveCN101575534AWide range of applicationsReduce carbon contentCatalytic crackingPetrochemicalPetroleum
The invention discloses a device and a method for reducing the temperature of catalytic cracking regenerated catalyst in the field of petrochemical industry catalytic cracking and aims to solve the problems that the method for reducing the temperature of catalytic cracking regenerated catalyst has a small application range in the prior art, and the like. The device comprises a regenerated catalyst cooler (4) arranged below a regenerator (1) and the bottom head of the cooler is internally provided with a cooling main air distributor (8). A sleeve (5) is arranged between the top of a taper section of the regenerated catalyst cooler and the bottom of the regenerator and provided with a regenerated catalyst conveying pipe (3) internally, and an annular space (6) is formed between the sleeve and the conveying pipe. A regenerated inclined pipe (11) is arranged between the regenerated catalyst cooler and a heavy oil riser reactor (12) of a catalytic cracking device. The invention also discloses a method for reducing the temperature of catalytic cracking regenerated catalyst by adopting the device. The device and the method can be used for setting a catalytic cracking device of a single heavy oil riser reactor and a plurality of riser reactors.
Owner:CHINA PETROCHEMICAL CORP +1
Shale oil and gas yield evaluation model building and parameter calibrating method applied under closed system
InactiveCN104156593ASolving descriptions of complex processesFlexible settingsSpecial data processing applicationsShale oil extractionShale oil and gas
The invention relates to a shale oil and gas yield evaluation model building and parameter calibrating method applied under a closed system. The method includes the following steps of (1) building a shale oil yield evaluation model, (2) building a shale gas yield evaluation model, (3) measuring the shale oil yield and the shale gas yield through experiments, and (4) calibrating dynamic parameters in the shale oil yield evaluation model and the shale gas yield evaluation model. Due to the facts that shale oil generation and secondary cracking are considered at the same time and the shale oil yield evaluation model and the shale gas yield evaluation model are built in the closed system, considering from the degree of approximation between an experiment condition and a geological condition, the method effectively achieves description of the complex process that shale oil generation and secondary cracking exist at the same time under the closed system, and can describe shale oil and gas characteristics quantificationally and dynamically. The shale oil and gas dynamic parameters calibrated according to the method are combined with the thermal history of the burial history of an actual basin for geological extrapolation, and obtained shale oil and gas hydrocarbon generation history information is more accurate and reliable.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Integrated Venturi air washing device
InactiveCN102657991ARealize automatic adjustmentEasy to adjustHuman health protectionCombination devicesCyclonic separationFlue gas
The invention discloses an integrated Venturi air washing device. The device comprises two communicated barrels, wherein one barrel is a washing tower in which waste gas can be subjected to pre-washing treatment such as cooling and humidifying, and washing liquid can be injected and fully mixed with flue gas; the other barrel is a separation tower which mainly finishes gas-liquid separation; and the two barrels are connected into a whole through a communicating pipe. After being pretreated, the waste gas is washed and separated by using a Venturi effect and the cyclone separation principle. The Venturi air washing device is small in size, can be flexibly arranged, is easy to manufacture, is flexibly regulated, and can be suitable for large flue gas treatment, small workshop air purification and the like.
Owner:CESTOIL ENVIRO CO LTD
Air condtioner capable of being radio monitored via cellphone and computer
InactiveCN1361392AEasy to controlFlexible regulationTelemetry/telecontrol selection arrangementsSpace heating and ventilation safety systemsCommunication unitModem device
The present invention relates to the field of air conditioner technology and consists of air conditioner and its remote controller. The remote controller consists of wireless controller and cellphonemodule installed inside air conditioner as well as wireless modem capable of communicating with the cellphone module via GSM network or CEMA network in radio mode. The wireless modem consists of cellphone module and computer connected to the cellphone module or consists of one cellphone; and the radio controller consists of power source, memory, communication unit and man-computer interface. The present invention makes it possible to control air conditioner via relatively long distance. It is especially suitable for remote control of dispersive air conditioners.
Owner:HAIER GRP CORP +1
Real-time controllable micro-liquid-drop transportation method based on C-shaped cut lithium niobate chip
The invention discloses a micro-liquid-drop transportation method, the method takes a C-shaped cut lithium niobate substrate and a polytetrafluoroethylene hydrophobic membrane as a core, uses a photoelectric wetting effect for driving micro liquid drops, and the micro liquid drops are driven by the scanning motion of the laser focusing light spots on the C-shaped cut lithium niobate chip for transport according to any two-dimensional path. The chip required by the method has a simple and reliable structure, flexible regulation and control can be carried out on the transport motion of the micro liquid drops by controlling the light spot scanning path and the laser power, can be used for polar liquid, and has no special requirements on physical property of the micro liquid drops to be transported. The method can be used for transporting the microscale chemical reagents and the fluid samples during a biological, chemical and medical analysis process, and has very important meaning for the development of fields such as bio-medical treatment, medical diagnosis, environment monitoring and molecular biology.
Owner:HEBEI UNIV OF TECH
Preparation method of bionic adhesive material with end-expanded microstructure array
ActiveCN110482481AExtended service lifeReduce manufacturing costFixed microstructural devicesDecorative surface effectsPositive pressureMetal sheet
The invention discloses a preparation method of an end-expanded microstructure array adhesive material, which belongs to the field of preparation of adhesive materials, and comprises the following steps: 1) processing a through hole on a metal sheet; 2) modifying the morphology of the through hole by adopting an electrochemical method to prepare a mold through hole assembly; 3) filling a mold witha polymer, curing, and demolding to obtain the end-expanded microstructure array adhesive material. According to the invention, controllable modification of the through hole is carried out by electroplating, precise machining of complex geometry on a metal material is realized; compared with an existing non-metal mold, the service life of the mold can be greatly prolonged, the production cost canbe greatly reduced, the tail end morphology of the microstructure can be regulated and controlled by adjusting the positive pressure between the through hole assembly and the substrate assembly according to the substrate assemblies with different elasticity moduli, and therefore preparation of adhesion materials with different properties is achieved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
Multimodal cross polarization filter based on metamaterials
InactiveCN102692733AWide working spectral rangeSuitable for multi-peak cross-polarization filteringNon-linear opticsNon symmetricPolarizer
The invention provides a multimodal cross polarization filter based on metamaterials. The multimodal cross polarization filter comprises a polarizer, an metamaterial structure and an analyzer which are sequentially arranged; the metamaterial structure comprises a dielectric layer and two metamaterial layers; the two metamaterial layers are respectively positioned on the surfaces of two sides of the dielectric layer, each metamaterial layer consists of metamaterial basic units which are arrayed periodically, structures of the units of the two metamaterial layers are the same, but the units of the two metamaterial layers are perpendicular; each of the structures of the units of the metamaterial layers comprises two metal resonators with different arc lengths, and corresponding central angles include an angle of 140 degrees and an angle of 160 degrees or consists of two other asymmetric angles. The multimodal cross polarization filter can realize cross polarization conversion of a plurality of frequency bands, and a good cross polarization filtering function is realized. Besides, the multimodal cross polarization filter has good tunability and can be used in Terahertz and optical bands.
Owner:HARBIN ENG UNIV
Coding phase gradient metasurface based on Pancharatnam-Berry phase
The invention discloses a coding phase gradient metasurface based on a Pancharatnam-Berry phase. By taking a phase gradient metasurface as a coding unit, internal phase modulation of the coding unit can be realized; by performing modulation on the internal phase gradient in the coding unit, different effects, such as abnormal reflection, focusing, imaging and the like, can be realized; by performing sequential combination on designed coding units with special electromagnetic characteristics, different effects can be generated; according to the coding phase gradient metasurface based on the Pancharatnam-Berry phase, more flexible control on electromagnetic wave can be realized from two aspects of the coding unit and the coding sequence; the coding phase gradient metasurface has the advantages of easy operation in design, convenience in applying, easy processing and manufacturing, and the like; and the ; the coding phase gradient metasurface has significant application prospect in the aspects of antenna, imaging, reduction of radar scattering area, and the like.
Owner:AIR FORCE UNIV PLA
Device and method for regulating and controlling ecological water requirement in dry seasons of riverway bankside zone under dam
ActiveCN103741642ASatisfy the guarantee rate of ecological water demandWill not affect normal service functionClimate change adaptationHydraulic engineering apparatusDry seasonWater volume
The invention discloses a device and a method for regulating and controlling ecological water requirement in dry seasons of a riverway bankside zone under a dam. The device comprises an architecture device, a height adjustment device, a charge / discharge device, a pendulous device and a central control device. The invention also provides a method for regulating and controlling the ecological water requirement in dry seasons of the riverway bankside zone under the dam by using the device. The device is capable of running independently or running according to dispatching in combination with an upstream reservoir; the device does not increase, and even reduces the discharged volume under the dam in the dry seasons while meeting the basic requirements such as normal floodwater draw-off, shipping and upstream reservoir water supply, and therefore, effective regulation and control on the ecological water requirement of the bankside zone near the device can be realized; the water level of the riverway bankside zone under the dam can be remarkably banked up, and also the water level pulse amplitude of different areas can be flexibly controlled; and therefore, the assurance rate of the ecological water requirement in the dry seasons of the riverway bankside zone under the dam is achieved, and the uneven seasonal distribution problem of the water volume and the contradiction between the water conservancy project construction and the downstream ecological water requirement are solved.
Owner:HOHAI UNIV +1
Multistage extraction unit for animal and plant raw materials, and method and application thereof
InactiveCN106362434AReduce crushing energy consumptionImprove filtration efficiencySolid solvent extractionSolventPulverizer
The invention relates to a multistage extraction unit for animal and plant raw materials, and a method and application thereof, belonging to the technical field of animal and plant extraction. The extraction unit comprises an extraction tank (1), a filtration membrane filter (2), a pulverizer (3) and a concentrated solution membrane separation device, wherein the extraction tank (1) is connected with the pulverizer (3) through a raw material delivery pipe (101), and connected with a feed port of the filtration membrane filter (2) through a first pump (4) via a pipeline; a filtrate outlet of the microfiltration membrane filter (2) is connected with a filtrate output pipe (201); and a concentrated solution outlet of the filtration membrane filter (2) is respectively connected with the extraction tank (1) through a concentrated solution return pipe (202) and connected with the concentrated solution membrane separation device through a concentrated solution delivery pipe (203). The extraction unit can pulverize the raw materials into fine powder and perform membrane separation extraction, has the advantages of high extraction efficiency and high yield, and is capable of obviously enhancing the concentration of the obtained filtrate, reducing the solvent consumption and lowering the production cost.
Owner:王芹
Digital television and playing method thereof, and computer readable storage medium
InactiveCN108521603AMeet audiovisual needsFlexible regulationSelective content distributionDigital televisionCable television
The invention discloses a digital television playing method comprising the steps of receiving an input sound screening command, and acquiring a target sound type needing to be extracted according to the sound screening command; acquiring a television signal of a currently playing television program, and extracting initial audio data of the television program from the television signal; analyzing the initial audio data, and extracting target sound data corresponding to the target sound type from the initial audio data; and replacing the initial audio data in the television signal with the target sound data, and using the television signal of which the sound data is replaced to play the television program. The invention also discloses a digital television and a computer readable storage medium. According to the digital television and playing method thereof, and the medium provided by the invention, the audio content played by the digital television is flexibly controlled.
Owner:SHENZHEN LINGDU INTELLIGENT CONTROL TECH CO LTD
Multi-stage internal heat insulation shading system for greenhouse and greenhouse containing same
InactiveCN106034851AFlexible regulationReduce shadow areaClimate change adaptationGreenhouse cultivationDrive shaftGreenhouse
The invention relates to the field of environmental control of a sunlight greenhouse, in particular to a multi-stage internal heat insulation shading system for a greenhouse and the greenhouse containing the system. The internal heat insulation shading system comprises multi-stage internal heat-insulation shading screens, a screen pressing line and a screen supporting line, a plurality of pulling screen mechanisms, a driving shaft and a motor for driving the rotation of the driving shaft; each pulling screen mechanism comprises a driving steel cable and a reversing pulley, wherein one ends of the driving steel cables are wound on the driving shaft, and the other ends of the driving steel cables are wound on the reversing pulleys; one sides of the inner heat insulation screens are fixed, and the other ends of the inner heat insulation screens, as retracting and releasing ends, are respectively connected with the driving steel cables. The internal thermal insulation shading system not only has the advantages of simple structure, saving production cost, but also can flexibly regulate and control the indoor temperature and light according to the different needs of temperature and light by crops in different growing seasons and different time. Compared with traditional internal insulation and shading systems, the system provided by the invention has a greater application and promotion value.
Owner:ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
Wire powder composite plasma arc additive manufacturing device and using method
ActiveCN112605510AFlexible regulationImprove performanceAdditive manufacturing apparatusWelding/cutting auxillary devicesAlloyAdditive layer manufacturing
The invention discloses a wire powder composite plasma arc additive manufacturing device and a using method, and relates to the field of additive manufacturing for intermetallic compound alloys. The device comprises a plasma welding device, an arc height sensor (12), a wire powder composite filling material device and a computer (16), wherein the arc height sensor (12) is assembled on the plasma welding device; and the plasma welding device, the arc height sensor (12) and the wire powder composite filling material device are connected with the computer (16) separately. According to the invention, a powder adding device is introduced on the basis of double dissimilar wires, so that flexible regulation and control for alloy trace elements of a target intermetallic compound are realized, and various properties of the intermetallic compound are effectively improved. The arc height sensor is additionally arranged to feed back and adjust a plasma arc height, so that the transition stability of a plasma arc, a molten pool and wire powder filling materials in an additive process is effectively improved, and the defect rate of additive components is reduced.
Owner:SHANGHAI JIAO TONG UNIV
Ceramic thermal barrier coating layer and method for quickly preparing coating layer through in-situ reaction
The invention relates to a ceramic thermal barrier coating layer and a method for quickly preparing the coating layer through in-situ reaction, and belongs to the field of preparation and applicationof inorganic nonmetal materials. The component of the coating layer is La2(Ce1-xMx)2O7+delta, and M is one or a combination of two of Ti, Zr, Hf, Ta, Nb, Mo and W, wherein x is more than or equal to 0.10 and less than or equal to 0.30, and delta is more than or equal to 0 and less than or equal to 0.6. The coating layer is prepared by uniformly mixing soluble lanthanum salt, soluble cerium salt and soluble M salt through a plasma spraying method. The preparation method has the characteristics of simplicity, efficiency, low cost, flexible adjustment and control of the component of the coating layer, and is suitable for industrial production. The coating layer prepared through solution plasma spraying is excellent in heat isolation performance and thermal shock resistance; and the coating layer is stable in structure and long in service life and can be applied to high-temperature protection of a high-temperature alloy such as a marine engine, an aero-engine, a ground gas turbine and a rocket engine or a hot-end component of a refractory alloy.
Owner:INNER MONGOLIA UNIV OF TECH
Geometric phase metasurface applied to broadband multi-mode vortex wave beam generation
The invention discloses a geometric phase metasurface applied to broadband multi-mode vortex wave beam generation. A basic unit of the metalsurface is composed of a metal rod structure, a dielectric layer and a metal backboard stacked successively from top to bottom. The unit is anisotropic via special structural design, and the reflection phase difference is 180 degree under x and y polarized electromagnetic wave irradiation. A metal rod rotates for an angle phi within the horizontal plane of the metasurface by taking the center of the metal rod itself as the origin, and circular polarized incident waves irradiated on the unit is reflected to obtain circular polarized waves with the same rotation performance plus an additional + / - 2phi geometric phase change. The units are arranged in a 2D plane according to preset phase distribution, and under irradiation of the circular polarized electromagnetic waves, the metasurface can generate four different modes of vortex wave beams in different directions. The metasurface is simple in structure, easy to process and wide in working frequency band, and can be used for information coding, and the channel capacity can be improved by mode multiplexing.
Owner:SOUTHEAST UNIV
Method for efficiently treating oil-in-water emulsion by using super-hydrophilic nanofiber membrane with gradient structure
ActiveCN112777689AGood compatibilityReduce dosageSemi-permeable membranesMembranesOil retentionSpinning
The invention provides a method for efficiently treating an oil-in-water emulsion by using a super-hydrophilic nanofiber membrane with a gradient structure, which comprises the specific preparation steps of preparing the super-hydrophilic nanofiber membrane with the gradient structure by electrostatic spinning, filtering distilled water for pre-wetting only under the action of gravity, and then directly filtering the oil-in-water emulsion for oil-water separation, wherein the filter membrane is directly reused after being simply cleaned by clean water. According to the invention, efficient oil-water separation can be achieved for oil-in-water emulsion with the liquid drop particle size ranging from the micron level to the nano level, the extremely high treatment flux can be achieved through low-pressure driving, the oil retention rate ranges from 92.51% to 99.52%, and the effect is not remarkably attenuated after the oil-water separation device is reused for 6 times; and the super-hydrophilic nanofiber membrane material with a gradient structure is used for realizing efficient oil-water separation on various nanoscale oil-in-water emulsions, and the material is convenient to prepare, mild in operation condition, high in oil retention rate and treatment flux, high in anti-pollution performance and wide in applicable treatment object range.
Owner:TONGJI UNIV
Piston phase regulation and control system and method of laser coherent array
The invention relates to a piston phase regulation and control system and regulation and control method for a laser coherent array. A laser beam splitter equally divides seed laser into N+1 beams of sub-laser, a phase modulator, a laser amplifier, a laser collimator, a half-wave plate and a spectroscope are sequentially arranged on a transmission path of an ith path of sub-laser, and i is equal to1, 2,..., N; 99% of laser energy is transmitted to a first laser beam combiner to be combined and then outputted after being split by an ith spectroscope, and (1% of laser energy is transmitted to asecond laser beam combiner through an (N+i) th half-wave plate to be combined into array laser, then transmitted to a laser beam shrinking device and then incident to a camera; the (N+1) th path of sub-laser serves as reference light to enter the camera, the array laser and the reference light coincide at a target surface of the camera and interfere with each other, the camera outputs the interference image information to an image acquisition and phase control module, and the image acquisition and phase control module controls each phase modulator. The method is advantaged in that the polarization direction and the piston phase of each path of laser of the high-power coherent array can be flexibly regulated and controlled.
Owner:NAT UNIV OF DEFENSE TECH
Method for high-effectively regulating the dislocation density of local area of CVD monocrystal diamond
ActiveCN110938864AQuality improvementImprove uniformityPolycrystalline material growthFrom chemically reactive gasesFemto second laserParticle beam
The invention discloses a method for high-effectively regulating the dislocation density of local area of CVD monocrystal diamond. In the method, composite technologies such as plasma etching, surfaceappearance detection and orthogonal polarization imaging, etc., a high-dislocation density area in a diamond substrate can be rapidly and destructively determined; by using high-energy particle beamssuch as femtosecond laser, the high-dislocation density area in the diamond substrate is patterned flexibly and high-effectively. With combination of selection and arrangement of a mask material in agraphical area, the method can block the extension of the dislocation of bottom area of the processed pattern to the CVD diamond growing layer, regulate the extension direction of the dislocation line on the side area of the pattern, and release the stress during the process of growing the graphical area, thus reducing the dislocation density and residual stress of the local area in the CVD diamond growing layer effectively, achieving pertinent regulation of defects and crystallization quality of the growing layer, and improving the growing uniformity and crystal quality of the CVD diamond.
Owner:WUHAN UNIV
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