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Design method of virtual scene experience system
ActiveCN106157359AAchieve transformationImprove the simulation effect3D modellingComputer graphicsHuman–computer interaction
The invention provides a design method of a virtual scene experience system, comprising the following steps: (a) collecting a panoramic image through a panoramic camera; (b) establishing a 3D virtual model based on the computer graphics and by use of a 3D modeling method; (c) fusing the physical image information in the panoramic image into the 3D virtual model to realize virtual-real fusion and to get a virtual fusion scene; (d) establishing a mode of interaction between users and the virtual fusion scene, and setting up a virtual scene experience interface; and (e) experiencing the virtual scene experience interface through an immersive display device.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Method suitable for effective flow guide for fractures in fracturing of shale oil pool reservoir
ActiveCN106907137AImprove diversion capacityIncrease "retrofit volumeFluid removalMicro fractureFracturing fluid
The invention relates to the technical field of hydraulic fracturing capacity increasing revamping of oil and gas reservoirs, in particular to a method suitable for effective flow guide for fractures in fracturing of a shale oil pool reservoir. The method includes the following steps that A, the reservoir is pretreated through acid liquor; B, the main fracture is constructed through low-viscosity fracturing fluid; C, the micro fractures and the branch fractures are opened by injecting low-viscosity slickwater; D, slugging is conducted by injecting low-viscosity acid liquor and low-viscosity slickwater alternately; E, low-viscosity slickwater carrying a proppant and low-viscosity fracturing fluid carrying a proppant are injected in sequence so as to support a micro fracture system and a branch fracture system, and the first proppant is different from the second proppant; F, intermediate-viscosity fracturing fluid carrying proppants is injected so as to support a main fracture system; and G, the fourth proppant in a shaft is completely displaced to the openings of the fractures by means of the low-viscosity slickwater.
Owner:CHINA PETROLEUM & CHEM CORP +1
Permeability improvement technology for coal bed gas reservoir cap by using three-dimensional fracture network modification
InactiveCN102392677AImprove permeabilityIncrease contact areaFluid removalGas removalMining engineeringHorizontal wells
The invention relates to a permeability improvement technology for a coal bed gas reservoir cap by using three-dimensional fracture network modification. The technology is as follows: building a bedding horizontal well from ground to top and bottom plates of the coal bed of an area not mined; building bedding, three-dimensional cross-type or multi-branch long boreholes on the top and bottom plates of the coal bed of the area not mined through perforation and segmented fracturing or existing sinking and driving engineering, and then carrying out hydraulic fracturing; modifying the coal bed gas reservoir cap into a crisscross fracture network system to form a modified volume; building various types of drainage boreholes in the modified volume; and carrying out negative pressure extraction together with a fractured well, so that coal bed gas can be continuously desorbed and dispersed and then extracted out in large scale through the modified volume. According to the invention, the crisscross fracture network system is formed in the coal bed gas reservoir cap, so that the coal bed gas can be continuously desorbed and dispersed at negative pressure and then extracted out in large scale through the modified volume, thus the content of coal bed gas in the modified bed can be quickly reduced to be below the safety standard in the outburst prevention formulation, and safe and high-efficiency production of mines can be realized on the basis of forming scale coal bed gas development.
Owner:HENAN COAL CHEM IND GROUP INST
Multi-component super-molecular hydrogel and preparation method thereof
ActiveCN103242656AAchieve multi-functionalityUniversalNon-macromolecular adhesive additivesPhotometryCross-linkPolyvinyl alcohol
The invention discloses multi-component super-molecular hydrogel and a preparation method of the multi-component super-molecular hydrogel. The hydrogel is formed by a component containing a strong hydrogen bond, a component containing a weak hydrogen bond and water, wherein the component containing the strong hydrogen bond is one or more of a carbon oxide nano tube, graphene oxide, a carboxylated ferroferric oxide nano particle, a carboxylated silver nano particle, a carboxylated quantum dot, polyacrylic acid, polypropylene glycol, polyvinyl alcohol, polyurethane, polyamide and poly(p-styrene) sodium sulfonate; and the component containing the weak hydrogen bond is a small-molecular compound or a high-molecular compound. A lot of cross-linking force of the hydrogel disclosed by the invention comes from the weak hydrogen bond so that the hydrogel is very sensitive to the stimulation of an external environment; when chemical components are proper, gel-sol conversion can be carried out under the effects of temperature rising, near-infrared light illumination and acids; and the conversion is reversible, namely the gel-sol conversion can be carried out under the effects of temperature reduction, removing of a near-infrared light source and alkalis.
Owner:PEKING UNIV
Hybrid temporary plugging volume fracturing method suitable for deep shale gas horizontal well
ActiveCN106437662ASolve the transformation problemImprove utilizationFluid removalShale gasMaterial Perforation
The invention provides a hybrid temporary plugging volume fracturing method suitable for a deep shale gas horizontal well. The method comprises the following steps that 1, wiper trip and well washing operation is conducted on a horizontal well subjected to suspected casing deformation, whether the horizontal well is subjected to casing deformation or not is determined, and if yes, the casing deformation position and length are further determined; 2, after the casing deformation position is determined, perforation position and parameters are determined according to geology and well logging parameters; 3, a perforating gun type and a perforation mode are determined according to the wiper trip condition; 4, the size of construction is determined according to the casing deformation section length and the perforation number; 5, a treatment mode of a fractured section is determined according to different well conditions after casing deformation occurs; 6, on the basis of the perforating gun type, temporary plugging diversion fracturing operation is implemented in a perforation hole and section or a fracturing effective flow channel within the fracture through a hybrid temporary plugging volume fracturing temporary plugging diversion technology, and the overall transformation volume is increased.
Owner:ORIENT BAOLIN TECH DEV BEIJING
Single-difference filtering-based deformation monitoring GNSS (global navigation satellite system) signal multi-path correction method
ActiveCN106646538ARealize evaluationAchieve transformationSatellite radio beaconingAmbiguityDeformation monitoring
The invention discloses a single-difference filtering-based deformation monitoring GNSS (global navigation satellite system) signal multi-path correction method. On the basis of the spatial correlation characteristics of inter-receiver single-difference observation residuals, a single-difference filtering method is adopted to fix ambiguity and extract a carrier pseudo-range observation residual; fast Fourier transform analysis and wavelet de-noising are performed on the data residual, so that a discrete multi-path correction map and a reflection multi-path spatial correction map are established; and therefore, influence on GNSS carriers and pseudo-range observation values caused by a multipath effect in a bridge deformation monitoring environment can be decreased. According to the method of the invention, the spatiotemporal repetition characteristics of multiple paths are utilized. With the single-difference filtering-based deformation monitoring GNSS signal multi-path correction method adopted, the reliability and success rate of ambiguity fixation can be effectively improved, and single-epoch calculation accuracy of dynamic monitoring can be improved.
Owner:SOUTHEAST UNIV
Method and system for digging object grade knowledge
ActiveCN101231661AEasy to handleFlexible miningSpecial data processing applicationsProcess moduleSource Data Verification
The invention discloses an object-level information excavation system, which comprises a data collection module, a data cleaning module, a content pretreatment module and an object correlation search module, wherein, the data collection module used to collect data comprises a WEB grabber, the data cleaning module used to process structured data comprises a data verification module and a repeat-ridding process module, the content pretreatment module used to pretreat unstructured data comprises a metadata management module and a content analyzer, and the object correlation search module used to analyze the correlation degree of the processed content of the content pretreatment module comprises a correlation degree analyzer. The invention also discloses an object-level information excavation method, which comprises the following steps that: information is collected from web pages; the data cleaning process is carried out to the structured data collected; the content pretreatment operation is carried out to the unstructured data collected; the object correlation search operation is carried out to the content obtained after the pretreatment.
Owner:上海估家网络科技有限公司 +1
Smelting method of HIC (Hydrogen Induced Crack)/SSCC (Sulfide Stress Corrosion Cracking)-preventing steel
ActiveCN103540833AImprove dynamic conditionsAchieve transformationManufacturing convertersProcess efficiency improvementOxygenStress corrosion cracking
The invention discloses a converter smelting and external refining control method of HIC (Hydrogen Induced Crack) / SSCC (Sulfide Stress Corrosion Cracking)-preventing steel. A smelting process route of converter-CAS (Control Automatic System) station-LF (Low Frequency) refining-VD (Vacuum Distillation) / RH (Relative Humidity) vacuum-calcium treatment-soft blowing-continuous casting is adopted. Low-phosphor requirements of the HIC / SSCC-preventing steel are obtained through controlling the converter smelting process route; and meanwhile, part of deoxidation type inclusions are removed by carrying out strong deoxidation, alloying as well as residue washing in a converter steel-tapping process, and over 60% of sulfur in molten steel is removed by sufficient stirring of the residue washing. In the LF refining process, refining furnace slag which is high in alkalinity, high in Al2O3 and strong in reducibility is obtained by regulating components of the refining furnace slag, and the inclusions are transformed and removed towards a low melting point by virtue of balance of the furnace slag-molten steel-inclusions. Proper vacuum treatment time and vacuum degree are kept at a vacuum treatment furnace so as to remove part of gas and inclusions, excessive calcium line is fed into the molten steel after being broken in air, and then the molten steel is softly blown and stirred for over 20 minutes to obtain the molten steel with ultralow oxygen and ultralow sulfur.
Owner:HUNAN VALIN XIANGTAN IRON & STEEL CO LTD
Regional complex distribution network dispatch control management system based on virtual power plant
ActiveCN110416998AAchieve transformationAdjustable loadSingle network parallel feeding arrangementsEnergy storageNew energyStructure of Management Information
The present invention discloses a regional complex distribution network dispatch control management system based on a virtual power plant, and belongs to the technical field of dispatch control management. Aiming at the problem that distribution network control becomes increasingly complex due to increasing complexity of the structure in a distribution network, sharply increased number of dispersed and distributed power supplies, increasingly growing capacity / power ratio and complex and varied regional distribution networks, the regional complex distribution network dispatch control managementsystem based on a virtual power plant is developed. The system mainly includes the construction of different types of virtual power plants and a big data cloud computing platform at a regional leveldistribution network dispatch center. By developing the dispatch control management system for a regional power grid, a complex distribution network can be connected in the form of a virtual power plant for unified coordination and optimization management, and the system is a new type of complex distribution network management mode. The regional complex distribution network dispatch control management system can be widely applied to distributed new energy-rich areas, and is of practical significance for developing virtual power plants, developing renewable green energy and achieving energy transformation.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Illumination control method and system
InactiveCN101163366ASave electricityRealize increase and decrease changesEnergy efficient ICTElectrical apparatusInformation controlRadio frequency signal
The present invention provides a method and a system for controlling illumination; the system comprises a luminance controller which is used for confirming the control operation with the present luminance and converting the information of control operation into radio frequency signal for emitting; lamp controllers which are connected with every controlled lamp and used for receiving the emitted radio frequency signal; and then fetching the information of the control operation from the radio frequency signal and controlling the state of lamp according to the fetched information. The method comprises that the luminance controller confirms the control operation with the present luminance and converts the information of control operation into radio frequency signal for emitting; lamp controllers receives the emitted radio frequency signal and then fetches the information of the control operation from the radio frequency signal and controls the state of lamp according to the fetched information. The present invention utilizes the pattern of wireless automatic network to control the luminance according to the actual luminance on the site; no people are needed and the present invention can save power effectively.
Owner:新动力(北京)建筑科技有限公司
Preparation method of non-rare earth MnAl permanent magnetic alloy
InactiveCN104593625AEasy to processAccelerated corrosionMagnetic materialsElectric arc furnaceRare earth
The invention relates to a preparation method of a non-rare earth MnAl permanent magnetic alloy. The preparation method comprises the following steps: (1) preparing the compositions of a master alloy sample: preparing master alloy raw materials with Mn60-xAl40+x as a nominal composition according to the atom percentage, wherein x is equal to 0-10; (2) smelting the master alloy: adopting a non-self-consumable electric arc furnace, putting the prepared master alloy raw materials into a water cooling copper crucible, and repeatedly smelting the alloy for 3-5 times to obtain a MnAl alloy ingot with uniform compositions; (3) preparing an MnAl alloy ribbon by the MnAl alloy ingot by adopting a single-roller rapid quenching method; (4) carrying out vacuum heat treatment: carrying out vacuum heat treatment on the MnAl alloy ribbon obtained in the third step to obtain a tau-phase MnAl alloy; and (5) mechanical ball milling: ball milling the tau-phase MnAl alloy obtained in the fourth step to obtain tau-phase MnAl alloy powder, namely the non-rare earth MnAl permanent magnetic alloy with high coercivity. Compared with the prior art, according to the preparation method disclosed by the invention, the cost is low, the preparation process is simple, and the obtained MnAl permanent magnetic alloy is good in permanent magnetic property and high in coercivity.
Owner:TONGJI UNIV
Earth pressure balance type annular shield machine
InactiveCN102200014AAchieve transformationIncrease the range of applicable soil layersTunnelsNitrile rubberEarth pressure balance
The invention relates to an earth pressure balance type annular shield machine. The shield machine comprises a shield machine shell, an annular knife disc, an earth pressure cabin, a screw conveyer, thrust cylinders, a gasket, a pipe piece disassembling machine, a pipe piece assembling machine and a sealing brush, wherein the annular knife disc is arranged at the front part of the shield machine shell, and the earth pressure cabin is arranged at the rear part of the annular knife disc; the screw conveyer is arranged at the lower part of the shield machine shell, and the thrust cylinders are uniformly distributed around the shield machine shell; the gasket is a nitrile rubber corrugated pipe inflatable gasket, and the side part of the gasket is provided with a gasket jack; the pipe piece disassembling machine is arranged at the front end of the upper part of the screw conveyer; the pipe piece assembling machine is arranged behind the pipe piece disassembling machine; and the gasket brush is arranged at the tail part of the shield machine. Compared with the prior art, the earth pressure balance type annular shield machine can be used for excavating tunnels with different diameters as required, the range of applicable soil layers is wide, the earth pressure in the earth cabin is maintained through the expansion and contraction of compressed air, and the functions of sealing and water stopping are realized.
Owner:TONGJI UNIV
Ferroelectric oxide/semiconductor composite film diode resistance change memory
ActiveCN101789490ARealize rewritable functionIncrease program/erase speedElectrical apparatusDigital storageStrontium titanateComposite film
The invention belongs to the technical field of the information memory and particularly relates to a ferroelectric oxide / semiconductor sequentially composite film diode resistance change memory. The resistance change memory comprises a substrate, a bottom electrode, a ferroelectric oxide / semiconductor composite memory function layer and a top electrode, and is prepared by the following method which comprises the following steps: developing compound electrodes, such as strontium ruthenium, lanthanum nickel and the like, or metal on the monocrystal strontium titanate or SiO2 / Si substrate to serve as the bottom electrode; then developing the ferroelectric oxide / semiconductor composite film function layer by a pulsed laser deposition or radio frequency magnetron sputtering method; and developing the metal top electrode to form a single diode memory unit structure. The polarity of the diode changes with the orientation of the electric domain. The ferroelectric oxide / semiconductor composite film diode resistance change memory has the advantages of high memory density, good information retentivity and low power consumption.
Owner:FUDAN UNIV
Tile detection apparatus and detection method based on RGB-D camera
PendingCN108007364ANo damageCooperate wellOptically investigating flaws/contaminationUsing optical meansMicrocomputerLiquid-crystal display
The invention discloses a tile detection apparatus and detection method based on an RGB-D camera. The tile detection apparatus includes a frame, a conveyor belt conveying mechanism, a support, an RGB-D camera, light sources, a microcomputer and a liquid crystal display screen, wherein the support is displayed in a door type structure, and stretches over and is arranged on the conveyor belt conveying mechanism; the RGB-D camera and the light sources are fixed on the support; the conveyor belt conveying mechanism, the RGB-D camera and the light sources are controlled by the microcomputer; and the liquid crystal display screen is connected with the microcomputer. The detection method by means of the tile detection apparatus is high in detection efficiency, and can complete detection of surface flaws, tile size and flatness of tiles at the same time, wherein the detection process and the detection result accord with the related standard demand and quick and high accuracy detection work oftiles with different size can be realized. Besides, as non-contact detection is utilized during the detection process, the tile detection apparatus and detection method based on the RGB-D camera haveno harm to tiles.
Owner:GUANGDONG POLYTECHNIC COLLEGE
Preparing method for self-healing polysaccharide hydrogel
ActiveCN105622961AThe reaction process is simpleEasy to operatePharmaceutical non-active ingredientsProsthesisCelluloseSelf-healing
The invention relates to a preparing method for self-healing polysaccharide hydrogel. The preparing method comprises the steps that cellulose is added into ionic liquid to be dissolved, the mixture is then cooled to the room temperature, and a cellulose solution is obtained; the cellulose solution is heated and dripped with tert-butyl acetoacetate under the protection condition of introducing nitrogen, a reaction is carried out at the constant temperature, the solution is then cooled to the room temperature, purified and subjected to vacuum drying, and acetoacetic acid cellulose is obtained; under the room temperature, a chitosan solution is added into the acetoacetic acid cellulose solution, oscillated and mixed, and the self-healing polysaccharide hydrogel is obtained. The polysaccharide hydrogel prepared through the method has the self-healing performance, and has the pH responsiveness at the same time. The preparing method is simple in process, rich in raw material and suitable for modification of most polysaccharide derivatives; meanwhile, due to the good biocompatibility of cellulose and chitosan, the prepared polysaccharide hydrogel has good application prospects in the fields such as tissue engineering repair, medicine controlled release and biological bionics.
Owner:DONGHUA UNIV
Portable multi-purpose electric oven
InactiveUS20080116193A1Achieve transformationBaking ovenHot plates heating arrangementsEngineeringMechanical engineering
A portable multi-purpose electric oven comprises: case-shaped upper and lower covers which can be opened and closed and have a handle; a pair of insert roasting plates with a built in heating device, wherein the plate has on one surface a plurality of protruding bars to form grids for roasting and the other surface of the plate is a plane for frying, and the transformation between the functions of frying and baking can be achieved if the plate is inserted reversely again after being pulled out; a pair of electrical outlets inside the upper and lower covers which can automatically spring up and are connected with the heating device inside the pair of the roasting plates; a pair of oil collecting cups for collecting oil flowing out from channels between the protruding bars on the pair of roasting plates; a heating plate which can be inserted over the roasting plates; and a set of electronic controlling devices comprising a plurality of buttons and indicator lights. The present oven can be used for both roasting and frying, the oil flowing out during roasting can be recycled, and the heat from roasting or frying can be used for unfreezing or heating.
Owner:SOUTH ASIA INT H K
Preparation method of up-conversion fluorescent material
ActiveCN102977887ASimple methodSuppress generationLuminescent compositionsUp conversionFluorescent materials
Owner:INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
Mixed C4 utilizing method and device
ActiveCN107722177AAchieve transformationChemical/physical/physico-chemical processesOrganic solventGas phase
The invention relates to the field of mixed C4 utilization, and discloses a mixed C4 utilizing method. The method comprises the following steps: (1) in the existence of nitrogen, an initiating agent and an organic solvent, performing copolymerization on part or all of terminal olefin in a mixed C4-containing material and maleic anhydride; (2) performing gas-liquid separation on a product obtainedin the step (1) to obtain a gas phase product and a liquid-solid mixture, wherein based on the total weight of the gas phase product, the content of the terminal olefin in the gas phase product is 1 weight percent or below, and the content of 1,3-butadiene is 0.1 weight percent or below; (3) performing steam cracking reaction on the gas phase product obtained in the step (2), and returning obtained cracking gas to the material in the step (1); (4) performing liquid-solid separation on the liquid-solid mixture obtained in the step (2), wherein the obtained solid product is a polymer which contains a maleic anhydride functional group, and the mixed C4 is a mixture which contains a C4 hydrocarbon compound. The mixed C4 can be converted into a raw material of a functional material for utilizing.
Owner:CHINA PETROLEUM & CHEM CORP +1
Automatic plotting system for navigation radar
InactiveCN101630003AStabilize the echo imageAccurate orientationRadio wave reradiation/reflectionTransceiverRadar
The invention provides an automatic plotting system for navigation radar. The system comprises a log, a compass, a GPS, an AIS, a radar data acquisition processing card, a transceiver unit, an industrial computer, and a control unit, wherein the log, the compass, the radar antenna transceiving unit, the AIS and the GPS are connected with the radar data acquisition processing card; the radar data acquisition processing card is inserted in a PCI slot of the industrial computer, and is in charge of receiving information transmitted by the log, the transceiver unit, the compass and the GPS, converts the information into digital information, and transmits the information to the industrial computer; the industrial computer marks a target for a radar digital signal which is transmitted by the radar according to the data acquisition processing card to acquire an accurate position of the target, and transmits the result to a display; and the control unit is connected with the industrial computer. The automatic plotting system has low cost, stable and reliable system performance and convenient maintenance.
Owner:上海智森航海电子科技有限公司
Pipeline aperture deformer for trenchless pipeline laying
InactiveCN101881610AAchieve radial displacementRealize the transformation of axial displacemeUsing fluid meansMechanical engineeringPiston
The invention relates to a pipeline aperture deformer for trenchless pipeline laying, which is characterized by comprising a deformation rack, a conveying rod, an oil cylinder amplification mechanism, a displacement sensor and a sensor storehouse, wherein a big piston of the oil cylinder amplification mechanism is fixedly connected with the right end of a mandrel of the deformation rack, and a right end part of the oil cylinder body of the oil cylinder amplification mechanism is fixedly connected with a left end part of the sensor storehouse; the displacement sensor is positioned in the sensor storehouse, the displacement sensor is fixed by the oil cylinder body of the oil cylinder amplification mechanism through a sensor bracket, and the left end of a touch rod of the displacement sensor touches with a small piston of the oil cylinder amplification mechanism; the deformation rack comprises a supporting body, a deformation claw, an open spring, a wringing seat, a rear supporting body, a recycling spring, a connection cylinder and a mandrel. The invention has the characteristic of high test precision.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Functionalized metal-organic framework compounds, complexes formed therefrom, and methods of preparation and use thereof
ActiveCN110218220AEnvironmentally friendlyHigh fluorescence quantum yieldOther chemical processesOrganic chemistry methodsQuantum yield4,4'-Bipyridine
The invention discloses a functionalized metal-organic framework compounds, complexes formed therefrom, and methods of preparation and use thereof, wherein the molecular formula of the functionalizedmetal-organic framework compound is C36H22N7O4Zn, and the complex is formed by self-assembling tetra(4-(3-(4-carboxyphenyl)-2,3,4-triazole)-phenyl)ethylene as the main ligand, 4-4'-bipyridine as an auxiliary ligand and zinc nitrate. A LIFM-WZ-6 has high fluorescence quantum yield and two-photon absorption cross section, and has the advantages of high emission intensity and stable luminescence performance. A large amount of small cationic dyes can be adsorbed to achieve the purpose of adjusting the luminescence properties by single-photon and two-photon excitation and realize the emission of white light. The LIFM-WZ-6 does not mercury, is non-toxic, non-volatile, easy to recycle, and environmentally friendly; the composite can adsorb different kinds of cationic dyes with different contentsto obtain light emitting complexes with different light colors and luminosity, so that the light colors of the light emitting complexes can be more easily adjusted and the light color conversion can be realized.
Owner:SUN YAT SEN UNIV
Gas metal arc welding method and system
InactiveCN102873435AIncrease the conductive areaLower resistanceArc welding apparatusWelding power supplyPeak value
The invention discloses a gas metal arc welding method and a gas metal arc welding system, and belongs to the field of gas metal arc welding control. Constant wire feed is adopted, the wire feed rate ranges from 1.5 to 18m / min, a welding source outputs pulse current, and the average value of the pulse current is preset according to the wire feed rate before welding and is kept unchanged in the welding process; the arc voltage Ug is given before welding, a feedback value Uf of the arc voltage is sampled in real time in the welding process, and delta I is equal to the absolute value of k(Uf-Ug), wherein delta I is regulation current, and k is a proportionality coefficient and ranges from 10 to 100; when the feedback value Uf of the arc voltage increases, delta I is subtracted from the peak value Ip of the pulse current, and the basic value current Ib is added to delta I to keep the arc voltage stable; and when the feedback value Uf of the arc voltage decreases, the adjusting process is reversed. By the high frequency pulse current, the average value and the effective value of the current are obviously different, so that on the premise that the heat input of a base metal the heating of a solder wire is not changed basically, the heating of a solder wire is changed, the melting rate of the solder wire is adjusted and the arc length is adjusted.
Owner:BEIJING UNIV OF TECH
A kind of submarine ship forward tubular propeller technology
InactiveCN102285438AIncrease speedImprove concealmentRotary propellersWatercraft hull designFiberCavitation
A forward cross-flow propeller technology for submarine ships, especially the installation of a cross-flow drill propeller at the front of the submarine (ship), the three-dimensional super-side arc of the rotor blade is 30°-720° and the blade height and blade width , blade pitch gradual change through the paddle wheel mother shell and the rotor wheel body as a whole, the "ellipsoidal crown body" with super strong stress and rigid body, the rotor structure of the dynamic balance rotating outer profile, the cavitation disk arm of the stator through-flow tube is formed by umbrella-shaped injection The ultra-low (negative) pressure semi-ellipsoid super-supercavitation area around the submarine ship may be filled with rubber carbon fiber airbags to eliminate most of the wave-making resistance of conventional ships and form submarine ships (especially submarines) to sail at super speed And the energy-saving and overspeeding propeller technology and "drill bit effect" working principle of the submarine ship of energy-saving most tractive power.
Owner:管理 +2
Electric arc method for exciting ultrasonic waves
InactiveCN1355081AControllable wide-spectrum frequency response characteristicsControllable flexibilityArc welding apparatusNon-electric welding apparatusElectricityUltrasound
A method for using electric arc to excite ultrasonic wave includes such steps as electrically isolating alternating signals for guaranteeing safety of circuit, electrically isolating the are exciting signal of electrode for preventing signal interference, coupling the ultrasonic signals with arc exciting signals to obtain arc-ultrasonic exciting signals, and exciting electric arc for arc welding or smelting while modulating the electric arc by the said alternating signals in electric arc to excite ultrasonic waves, so improving the welding effect.
Owner:TSINGHUA UNIV
Lake basin ancient landform restoration-based quantitative method
ActiveCN107991714ASolve the accuracy problemImprove recovery accuracyGeological measurementsRock coreAcoustic wave
Owner:CHINA NAT OFFSHORE OIL CORP +1
Preparation method of mechanically-wrapped tobacco-coated cigar wrapper
The invention relates to a preparation method of a tobacco-coated cigar wrapper which can reform the smoking flavor of cigar. The method comprises the following steps of: extracting tobacco raw materials (such as shreds or stems of burley tobacco, aromatic tobacco, sun-cured tobacco and flue-cured tobacco) alone or in combination; making a tobacco extract; adding combustion promoters and humectants to the tobacco extract; squeezing the tobacco raw materials and then blending and pulping with a paste mill to obtain tobacco slurry; blending additional wood pulp fibers commodity alone or in combination until reaching 40 degree SR to 75 degree SR to obtain additional fiber slurry; adding the tobacco slurry into the additional fiber slurry and then adding calcium carbonate to obtain mixed slurry; making a paper base with a fixed quantity of 28 g / m<2> to 40 g / m<2> from the mixed slurry by using a fourdrinier board machine; and coating the tobacco extract on the paper base to make a novel cigar wrapper, wherein the coating amount of the tobacco extract is 3 g / m<2> to 20 g / m<2>. The cigar wrapper produced by the invention can not only meet the requirements for sensory quality of cigars but also achieve conversion of manual wrapping to mechanical wrapping of cigar, and greatly increases cigar production efficiency.
Owner:HUBEI CHINA TOBACCO IND +1
Geographic grid mapping method of mobile network data
ActiveCN105188030AGood effectAchieve transformationLocation information based serviceNetwork planningGeographic siteNetwork data
The invention discloses a geographic grid mapping method of mobile network data, and belongs to the field of mobile communication network optimization and analysis. The steps are as follows: firstly, carrying out mathematical modeling based on the existing massive DT drive test data, forming a corresponding relationship between an actual geographic area grid and a base station cell identifier, and analyzing the system format to obtain the following comparison table: grid numbers, cells, the number of sampling points, a total number of the sampling points, a distribution ratio of the sampling points and a coverage weight; normalizing the obtained comparison table, and carrying out linear interpolation calculations on geographic grids having no data with reference to geographic grids having data to obtain a new comparison table having the same structure; carrying out statistical calculation from a whole network angle based on the new comparison table, and updating the coverage weights of the cells in the geographic grids to facilitate the geographic grid mapping calculation of the mobile network data in the next step. The mobile network data are concluded in several categories, and the mobile network data are mapped into the corresponding geographic grids according to the comparison table established in the last step.
Owner:BEIJING TUOMING COMM TECH
Method for preparing micro magnetic carrier, micro magnetic carrier and active sludge immobilization method
InactiveCN102516563AImprove performanceEasy to handleInorganic material magnetismTreatment with aerobic and anaerobic processesSequencing batch reactorPolyvinyl alcohol
The invention relates to a method for preparing a micro magnetic carrier, the micro magnetic carrier and an active sludge immobilization method. The method for preparing the micro magnetic carrier comprises the following steps of: adding 10 to 50g / L of Fe3O4 particles into a polyvinyl alcohol solution, stirring, and adding a glutaraldehyde solution, concentrated hydrochloric acid and a sodium alginate solution for reacting; and washing with acetone, ethanol or distilled water, drying, and thus obtaining the micro magnetic carrier using the magnetic Fe3O4 particles as a core for wrapping a polyvinyl alcohol layer. A sequencing batch reactor technology is used in the active sludge immobilization method using the micro magnetic carrier as a core, the inoculation medium consists of the micro magnetic carrier and conventional sewage in a mass ratio of 1:1-1:3 and is used for secondary bio-treatment of active sludge, and the concentration of the inoculated active sludge is 2 to 4g / L (mass of the dry sludge / effective volume of a reactor); and the operating mode comprises water feeding, anaerobic stirring, aerobic aeration, settlement, drainage and standing. The invention has the advantages of quickening the biochemical reaction rate of dirt degradation and improving the treatment efficiency and the treatment effect of the sewage.
Owner:INST OF HYGIENE & ENVIRONMENTAL MEDICINE PLA ACAD OF MILITARY MEDICAL
Integrated measuring device for multiple-point type flow velocity pressure temperature
ActiveCN103033289ASimple structureEasy to install on siteFluid pressure measurement by electric/magnetic elementsFluid speed measurement using pressure differenceFlue gasMultiple point
The invention discloses an integrated measuring device for multiple-point type flow velocity pressure temperature, and belongs to the technical field of flue gas flow velocity measuring devices. The integrated measuring device for the multiple-point type flow velocity pressure temperature comprises a gas circuit detection unit (8), a backflow calibration unit and a sensing measurement unit (17). An outlet of a dynamic pressure tube of the gas circuit detection unit (8) and an outlet of a static pressure tube of the gas circuit detection unit (8) are respectively connected with an air inlet of the backflow calibration unit. A temperature sensor of the gas circuit detection unit (8) is connected with the sensing measurement unit (17). Through the integrated measuring device for the multiple-point type flow velocity pressure temperature, multi-point measurement on the same pitot tube is achieved, flow velocity of a cross hatching line is directly outputted, accuracy of measurement of fuel gas flow velocity is improved, a gas circuit of a system is shortened, loss of backflow air supply pressure which is caused by the phenomenon that the gas circuit is too long is prevented, the backflow effect is enabled to reach an optimal level, and the gas circuit is prevented from being blocked by dust.
Owner:南京吉纳波环境测控有限公司
Charging and display system of taxi
The invention relates to an accounting and displaying system for combined-taxi, aiming at providing accounting taxi charges separately by seats and showing the results on the screen of the taxi. According to the different amount of passengers and the different mileage for each passenger, this accounting and displaying system can show the charges separately. Deduct the roundabout mileage charges caused by taxi sharing, the separate flag-down rate, the mileage and the taxi sharing charge under different conditions (shared by single passenger, double passengers, three passengers or four passengers, etc.) can be shown on the screen. In addition, the total charge of each passenger for single-driving will also be shown. The single-driving charge and the taxi sharing charge can be printed out as well. Moreover, the administrative data such as the different taxi sharing mileage, the charges and the person-time under certain taxi sharing conditions calculated at different times is shown and printed out electronically, which is convenient for changing the display and the account leading by seats exchanges of passengers or getting on and off the taxi. The accounting and displaying system for combined-taxi with an operation display lamp and a display board top of the taxi can make the transition from single-driving taxi to combined-taxi in taxi industry.
Owner:苏大庆 +1
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